1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2016 Free Software
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or (at
11 your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
34 /* Only MS-DOS does not define `subprocesses'. */
37 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
42 /* Are local (unix) sockets supported? */
43 #if defined (HAVE_SYS_UN_H)
44 #if !defined (AF_LOCAL) && defined (AF_UNIX)
45 #define AF_LOCAL AF_UNIX
48 #define HAVE_LOCAL_SOCKETS
53 #include <sys/ioctl.h>
54 #if defined (HAVE_NET_IF_H)
56 #endif /* HAVE_NET_IF_H */
58 #if defined (HAVE_IFADDRS_H)
59 /* Must be after net/if.h */
62 /* We only use structs from this header when we use getifaddrs. */
63 #if defined (HAVE_NET_IF_DL_H)
64 #include <net/if_dl.h>
74 # include <sys/stream.h>
75 # include <sys/stropts.h>
90 #endif /* subprocesses */
96 #include "character.h"
101 #include "termopts.h"
102 #include "keyboard.h"
103 #include "blockinput.h"
105 #include "sysselect.h"
106 #include "syssignal.h"
112 #ifdef HAVE_WINDOW_SYSTEM
114 #endif /* HAVE_WINDOW_SYSTEM */
117 #include "xgselect.h"
123 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
124 /* This is 0.1s in nanoseconds. */
125 #define ASYNC_RETRY_NSEC 100000000
129 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
130 struct timespec
*, void *);
133 /* Work around GCC 4.7.0 bug with strict overflow checking; see
134 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
135 This bug appears to be fixed in GCC 5.1, so don't work around it there. */
136 #if __GNUC__ == 4 && __GNUC_MINOR__ >= 3
137 # pragma GCC diagnostic ignored "-Wstrict-overflow"
140 /* True if keyboard input is on hold, zero otherwise. */
142 static bool kbd_is_on_hold
;
144 /* Nonzero means don't run process sentinels. This is used
146 bool inhibit_sentinels
;
151 # define SOCK_CLOEXEC 0
156 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
159 close_on_exec (int fd
)
162 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
167 # define accept4(sockfd, addr, addrlen, flags) \
168 process_accept4 (sockfd, addr, addrlen, flags)
170 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
172 return close_on_exec (accept (sockfd
, addr
, addrlen
));
176 process_socket (int domain
, int type
, int protocol
)
178 return close_on_exec (socket (domain
, type
, protocol
));
181 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
184 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
185 #define NETCONN1_P(p) (EQ (p->type, Qnetwork))
186 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
187 #define SERIALCONN1_P(p) (EQ (p->type, Qserial))
188 #define PIPECONN_P(p) (EQ (XPROCESS (p)->type, Qpipe))
189 #define PIPECONN1_P(p) (EQ (p->type, Qpipe))
191 /* Number of events of change of status of a process. */
192 static EMACS_INT process_tick
;
193 /* Number of events for which the user or sentinel has been notified. */
194 static EMACS_INT update_tick
;
196 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
197 this system. We need to read full packets, so we need a
198 "non-destructive" select. So we require either native select,
199 or emulation of select using FIONREAD. */
201 #ifndef BROKEN_DATAGRAM_SOCKETS
202 # if defined HAVE_SELECT || defined USABLE_FIONREAD
203 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
204 # define DATAGRAM_SOCKETS
209 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
210 # define HAVE_SEQPACKET
213 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
214 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
215 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
217 /* Number of processes which have a non-zero read_output_delay,
218 and therefore might be delayed for adaptive read buffering. */
220 static int process_output_delay_count
;
222 /* True if any process has non-nil read_output_skip. */
224 static bool process_output_skip
;
226 static void create_process (Lisp_Object
, char **, Lisp_Object
);
228 static bool keyboard_bit_set (fd_set
*);
230 static void deactivate_process (Lisp_Object
);
231 static int status_notify (struct Lisp_Process
*, struct Lisp_Process
*);
232 static int read_process_output (Lisp_Object
, int);
233 static void handle_child_signal (int);
234 static void create_pty (Lisp_Object
);
236 static Lisp_Object
get_process (register Lisp_Object name
);
237 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
239 /* Mask of bits indicating the descriptors that we wait for input on. */
241 static fd_set input_wait_mask
;
243 /* Mask that excludes keyboard input descriptor(s). */
245 static fd_set non_keyboard_wait_mask
;
247 /* Mask that excludes process input descriptor(s). */
249 static fd_set non_process_wait_mask
;
251 /* Mask for selecting for write. */
253 static fd_set write_mask
;
255 /* Mask of bits indicating the descriptors that we wait for connect to
256 complete on. Once they complete, they are removed from this mask
257 and added to the input_wait_mask and non_keyboard_wait_mask. */
259 static fd_set connect_wait_mask
;
261 /* Number of bits set in connect_wait_mask. */
262 static int num_pending_connects
;
264 /* The largest descriptor currently in use for a process object; -1 if none. */
265 static int max_process_desc
;
267 /* The largest descriptor currently in use for input; -1 if none. */
268 static int max_input_desc
;
270 /* Set the external socket descriptor for Emacs to use when
271 `make-network-process' is called with a non-nil
272 `:use-external-socket' option. The value should be either -1, or
273 the file descriptor of a socket that is already bound. */
274 static int external_sock_fd
;
276 /* Indexed by descriptor, gives the process (if any) for that descriptor. */
277 static Lisp_Object chan_process
[FD_SETSIZE
];
278 static void wait_for_socket_fds (Lisp_Object
, char const *);
280 /* Alist of elements (NAME . PROCESS). */
281 static Lisp_Object Vprocess_alist
;
283 /* Buffered-ahead input char from process, indexed by channel.
284 -1 means empty (no char is buffered).
285 Used on sys V where the only way to tell if there is any
286 output from the process is to read at least one char.
287 Always -1 on systems that support FIONREAD. */
289 static int proc_buffered_char
[FD_SETSIZE
];
291 /* Table of `struct coding-system' for each process. */
292 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
293 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
295 #ifdef DATAGRAM_SOCKETS
296 /* Table of `partner address' for datagram sockets. */
297 static struct sockaddr_and_len
{
300 } datagram_address
[FD_SETSIZE
];
301 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
302 #define DATAGRAM_CONN_P(proc) \
303 (PROCESSP (proc) && \
304 XPROCESS (proc)->infd >= 0 && \
305 datagram_address[XPROCESS (proc)->infd].sa != 0)
307 #define DATAGRAM_CHAN_P(chan) (0)
308 #define DATAGRAM_CONN_P(proc) (0)
311 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
312 a `for' loop which iterates over processes from Vprocess_alist. */
314 #define FOR_EACH_PROCESS(list_var, proc_var) \
315 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
317 /* These setters are used only in this file, so they can be private. */
319 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
324 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
329 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
331 p
->decode_coding_system
= val
;
334 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
336 p
->decoding_buf
= val
;
339 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
341 p
->encode_coding_system
= val
;
344 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
346 p
->encoding_buf
= val
;
349 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
351 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
354 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
359 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
364 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
369 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
374 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
376 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
379 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
384 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
389 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
391 p
->write_queue
= val
;
394 pset_stderrproc (struct Lisp_Process
*p
, Lisp_Object val
)
401 make_lisp_proc (struct Lisp_Process
*p
)
403 return make_lisp_ptr (p
, Lisp_Vectorlike
);
406 static struct fd_callback_data
412 int condition
; /* Mask of the defines above. */
413 } fd_callback_info
[FD_SETSIZE
];
416 /* Add a file descriptor FD to be monitored for when read is possible.
417 When read is possible, call FUNC with argument DATA. */
420 add_read_fd (int fd
, fd_callback func
, void *data
)
422 add_keyboard_wait_descriptor (fd
);
424 fd_callback_info
[fd
].func
= func
;
425 fd_callback_info
[fd
].data
= data
;
426 fd_callback_info
[fd
].condition
|= FOR_READ
;
429 /* Stop monitoring file descriptor FD for when read is possible. */
432 delete_read_fd (int fd
)
434 delete_keyboard_wait_descriptor (fd
);
436 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
437 if (fd_callback_info
[fd
].condition
== 0)
439 fd_callback_info
[fd
].func
= 0;
440 fd_callback_info
[fd
].data
= 0;
444 /* Add a file descriptor FD to be monitored for when write is possible.
445 When write is possible, call FUNC with argument DATA. */
448 add_write_fd (int fd
, fd_callback func
, void *data
)
450 FD_SET (fd
, &write_mask
);
451 if (fd
> max_input_desc
)
454 fd_callback_info
[fd
].func
= func
;
455 fd_callback_info
[fd
].data
= data
;
456 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
459 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
462 delete_input_desc (int fd
)
464 if (fd
== max_input_desc
)
468 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
469 || FD_ISSET (fd
, &write_mask
)));
475 /* Stop monitoring file descriptor FD for when write is possible. */
478 delete_write_fd (int fd
)
480 FD_CLR (fd
, &write_mask
);
481 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
482 if (fd_callback_info
[fd
].condition
== 0)
484 fd_callback_info
[fd
].func
= 0;
485 fd_callback_info
[fd
].data
= 0;
486 delete_input_desc (fd
);
491 /* Compute the Lisp form of the process status, p->status, from
492 the numeric status that was returned by `wait'. */
494 static Lisp_Object
status_convert (int);
497 update_status (struct Lisp_Process
*p
)
499 eassert (p
->raw_status_new
);
500 pset_status (p
, status_convert (p
->raw_status
));
501 p
->raw_status_new
= 0;
504 /* Convert a process status word in Unix format to
505 the list that we use internally. */
508 status_convert (int w
)
511 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
512 else if (WIFEXITED (w
))
513 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
514 WCOREDUMP (w
) ? Qt
: Qnil
));
515 else if (WIFSIGNALED (w
))
516 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
517 WCOREDUMP (w
) ? Qt
: Qnil
));
522 /* Given a status-list, extract the three pieces of information
523 and store them individually through the three pointers. */
526 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
540 *code
= XFASTINT (XCAR (tem
));
542 *coredump
= !NILP (tem
);
546 /* Return a string describing a process status list. */
549 status_message (struct Lisp_Process
*p
)
551 Lisp_Object status
= p
->status
;
557 decode_status (status
, &symbol
, &code
, &coredump
);
559 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
562 synchronize_system_messages_locale ();
563 signame
= strsignal (code
);
565 string
= build_string ("unknown");
570 string
= build_unibyte_string (signame
);
571 if (! NILP (Vlocale_coding_system
))
572 string
= (code_convert_string_norecord
573 (string
, Vlocale_coding_system
, 0));
574 c1
= STRING_CHAR (SDATA (string
));
577 Faset (string
, make_number (0), make_number (c2
));
579 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
580 return concat2 (string
, suffix
);
582 else if (EQ (symbol
, Qexit
))
585 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
587 return build_string ("finished\n");
588 AUTO_STRING (prefix
, "exited abnormally with code ");
589 string
= Fnumber_to_string (make_number (code
));
590 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
591 return concat3 (prefix
, string
, suffix
);
593 else if (EQ (symbol
, Qfailed
))
595 AUTO_STRING (prefix
, "failed with code ");
596 string
= Fnumber_to_string (make_number (code
));
597 AUTO_STRING (suffix
, "\n");
598 return concat3 (prefix
, string
, suffix
);
601 return Fcopy_sequence (Fsymbol_name (symbol
));
604 enum { PTY_NAME_SIZE
= 24 };
606 /* Open an available pty, returning a file descriptor.
607 Store into PTY_NAME the file name of the terminal corresponding to the pty.
608 Return -1 on failure. */
611 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
620 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
621 for (i
= 0; i
< 16; i
++)
624 #ifdef PTY_NAME_SPRINTF
627 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
628 #endif /* no PTY_NAME_SPRINTF */
632 #else /* no PTY_OPEN */
633 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
634 #endif /* no PTY_OPEN */
638 #ifdef PTY_TTY_NAME_SPRINTF
641 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
642 #endif /* no PTY_TTY_NAME_SPRINTF */
644 /* Set FD's close-on-exec flag. This is needed even if
645 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
646 doesn't require support for that combination.
647 Do this after PTY_TTY_NAME_SPRINTF, which on some platforms
648 doesn't work if the close-on-exec flag is set (Bug#20555).
649 Multithreaded platforms where posix_openpt ignores
650 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
651 have a race condition between the PTY_OPEN and here. */
652 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
654 /* Check to make certain that both sides are available.
655 This avoids a nasty yet stupid bug in rlogins. */
656 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
669 #endif /* HAVE_PTYS */
673 /* Allocate basically initialized process. */
675 static struct Lisp_Process
*
676 allocate_process (void)
678 return ALLOCATE_ZEROED_PSEUDOVECTOR (struct Lisp_Process
, pid
, PVEC_PROCESS
);
682 make_process (Lisp_Object name
)
684 struct Lisp_Process
*p
= allocate_process ();
685 /* Initialize Lisp data. Note that allocate_process initializes all
686 Lisp data to nil, so do it only for slots which should not be nil. */
687 pset_status (p
, Qrun
);
688 pset_mark (p
, Fmake_marker ());
690 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
691 non-Lisp data, so do it only for slots which should not be zero. */
694 for (int i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
698 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
699 p
->gnutls_boot_parameters
= Qnil
;
702 /* If name is already in use, modify it until it is unused. */
704 Lisp_Object name1
= name
;
705 for (printmax_t i
= 1; ; i
++)
707 Lisp_Object tem
= Fget_process (name1
);
710 char const suffix_fmt
[] = "<%"pMd
">";
711 char suffix
[sizeof suffix_fmt
+ INT_STRLEN_BOUND (printmax_t
)];
712 AUTO_STRING_WITH_LEN (lsuffix
, suffix
, sprintf (suffix
, suffix_fmt
, i
));
713 name1
= concat2 (name
, lsuffix
);
717 pset_sentinel (p
, Qinternal_default_process_sentinel
);
718 pset_filter (p
, Qinternal_default_process_filter
);
720 XSETPROCESS (val
, p
);
721 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
726 remove_process (register Lisp_Object proc
)
728 register Lisp_Object pair
;
730 pair
= Frassq (proc
, Vprocess_alist
);
731 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
733 deactivate_process (proc
);
736 #ifdef HAVE_GETADDRINFO_A
738 free_dns_request (Lisp_Object proc
)
740 struct Lisp_Process
*p
= XPROCESS (proc
);
742 if (p
->dns_request
->ar_result
)
743 freeaddrinfo (p
->dns_request
->ar_result
);
744 xfree (p
->dns_request
);
745 p
->dns_request
= NULL
;
750 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
751 doc
: /* Return t if OBJECT is a process. */)
754 return PROCESSP (object
) ? Qt
: Qnil
;
757 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
758 doc
: /* Return the process named NAME, or nil if there is none. */)
759 (register Lisp_Object name
)
764 return Fcdr (Fassoc (name
, Vprocess_alist
));
767 /* This is how commands for the user decode process arguments. It
768 accepts a process, a process name, a buffer, a buffer name, or nil.
769 Buffers denote the first process in the buffer, and nil denotes the
773 get_process (register Lisp_Object name
)
775 register Lisp_Object proc
, obj
;
778 obj
= Fget_process (name
);
780 obj
= Fget_buffer (name
);
782 error ("Process %s does not exist", SDATA (name
));
784 else if (NILP (name
))
785 obj
= Fcurrent_buffer ();
789 /* Now obj should be either a buffer object or a process object. */
792 if (NILP (BVAR (XBUFFER (obj
), name
)))
793 error ("Attempt to get process for a dead buffer");
794 proc
= Fget_buffer_process (obj
);
796 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
807 /* Fdelete_process promises to immediately forget about the process, but in
808 reality, Emacs needs to remember those processes until they have been
809 treated by the SIGCHLD handler and waitpid has been invoked on them;
810 otherwise they might fill up the kernel's process table.
812 Some processes created by call-process are also put onto this list.
814 Members of this list are (process-ID . filename) pairs. The
815 process-ID is a number; the filename, if a string, is a file that
816 needs to be removed after the process exits. */
817 static Lisp_Object deleted_pid_list
;
820 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
822 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
823 /* GC treated elements set to nil. */
824 Fdelq (Qnil
, deleted_pid_list
));
828 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
829 doc
: /* Delete PROCESS: kill it and forget about it immediately.
830 PROCESS may be a process, a buffer, the name of a process or buffer, or
831 nil, indicating the current buffer's process. */)
832 (register Lisp_Object process
)
834 register struct Lisp_Process
*p
;
836 process
= get_process (process
);
837 p
= XPROCESS (process
);
839 #ifdef HAVE_GETADDRINFO_A
842 /* Cancel the request. Unless shutting down, wait until
843 completion. Free the request if completely canceled. */
845 bool canceled
= gai_cancel (p
->dns_request
) != EAI_NOTCANCELED
;
846 if (!canceled
&& !inhibit_sentinels
)
848 struct gaicb
const *req
= p
->dns_request
;
849 while (gai_suspend (&req
, 1, NULL
) != 0)
854 free_dns_request (process
);
858 p
->raw_status_new
= 0;
859 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
861 pset_status (p
, list2 (Qexit
, make_number (0)));
862 p
->tick
= ++process_tick
;
863 status_notify (p
, NULL
);
864 redisplay_preserve_echo_area (13);
869 record_kill_process (p
, Qnil
);
873 /* Update P's status, since record_kill_process will make the
874 SIGCHLD handler update deleted_pid_list, not *P. */
876 if (p
->raw_status_new
)
878 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
879 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
880 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
882 p
->tick
= ++process_tick
;
883 status_notify (p
, NULL
);
884 redisplay_preserve_echo_area (13);
887 remove_process (process
);
891 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
892 doc
: /* Return the status of PROCESS.
893 The returned value is one of the following symbols:
894 run -- for a process that is running.
895 stop -- for a process stopped but continuable.
896 exit -- for a process that has exited.
897 signal -- for a process that has got a fatal signal.
898 open -- for a network stream connection that is open.
899 listen -- for a network stream server that is listening.
900 closed -- for a network stream connection that is closed.
901 connect -- when waiting for a non-blocking connection to complete.
902 failed -- when a non-blocking connection has failed.
903 nil -- if arg is a process name and no such process exists.
904 PROCESS may be a process, a buffer, the name of a process, or
905 nil, indicating the current buffer's process. */)
906 (register Lisp_Object process
)
908 register struct Lisp_Process
*p
;
909 register Lisp_Object status
;
911 if (STRINGP (process
))
912 process
= Fget_process (process
);
914 process
= get_process (process
);
919 p
= XPROCESS (process
);
920 if (p
->raw_status_new
)
924 status
= XCAR (status
);
925 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
927 if (EQ (status
, Qexit
))
929 else if (EQ (p
->command
, Qt
))
931 else if (EQ (status
, Qrun
))
937 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
939 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
940 If PROCESS has not yet exited or died, return 0. */)
941 (register Lisp_Object process
)
943 CHECK_PROCESS (process
);
944 if (XPROCESS (process
)->raw_status_new
)
945 update_status (XPROCESS (process
));
946 if (CONSP (XPROCESS (process
)->status
))
947 return XCAR (XCDR (XPROCESS (process
)->status
));
948 return make_number (0);
951 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
952 doc
: /* Return the process id of PROCESS.
953 This is the pid of the external process which PROCESS uses or talks to.
954 For a network connection, this value is nil. */)
955 (register Lisp_Object process
)
959 CHECK_PROCESS (process
);
960 pid
= XPROCESS (process
)->pid
;
961 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
964 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
965 doc
: /* Return the name of PROCESS, as a string.
966 This is the name of the program invoked in PROCESS,
967 possibly modified to make it unique among process names. */)
968 (register Lisp_Object process
)
970 CHECK_PROCESS (process
);
971 return XPROCESS (process
)->name
;
974 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
975 doc
: /* Return the command that was executed to start PROCESS.
976 This is a list of strings, the first string being the program executed
977 and the rest of the strings being the arguments given to it.
978 For a network or serial process, this is nil (process is running) or t
979 \(process is stopped). */)
980 (register Lisp_Object process
)
982 CHECK_PROCESS (process
);
983 return XPROCESS (process
)->command
;
986 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
987 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
988 This is the terminal that the process itself reads and writes on,
989 not the name of the pty that Emacs uses to talk with that terminal. */)
990 (register Lisp_Object process
)
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->tty_name
;
996 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
998 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1000 (register Lisp_Object process
, Lisp_Object buffer
)
1002 struct Lisp_Process
*p
;
1004 CHECK_PROCESS (process
);
1006 CHECK_BUFFER (buffer
);
1007 p
= XPROCESS (process
);
1008 pset_buffer (p
, buffer
);
1009 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1010 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1011 setup_process_coding_systems (process
);
1015 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1017 doc
: /* Return the buffer PROCESS is associated with.
1018 The default process filter inserts output from PROCESS into this buffer. */)
1019 (register Lisp_Object process
)
1021 CHECK_PROCESS (process
);
1022 return XPROCESS (process
)->buffer
;
1025 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1027 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1028 (register Lisp_Object process
)
1030 CHECK_PROCESS (process
);
1031 return XPROCESS (process
)->mark
;
1035 set_process_filter_masks (struct Lisp_Process
*p
)
1037 if (EQ (p
->filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1039 FD_CLR (p
->infd
, &input_wait_mask
);
1040 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1042 else if (EQ (p
->filter
, Qt
)
1043 /* Network or serial process not stopped: */
1044 && !EQ (p
->command
, Qt
))
1046 FD_SET (p
->infd
, &input_wait_mask
);
1047 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1051 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1053 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1054 A value of t means stop accepting output from the process.
1056 When a process has a non-default filter, its buffer is not used for output.
1057 Instead, each time it does output, the entire string of output is
1058 passed to the filter.
1060 The filter gets two arguments: the process and the string of output.
1061 The string argument is normally a multibyte string, except:
1062 - if the process's input coding system is no-conversion or raw-text,
1063 it is a unibyte string (the non-converted input), or else
1064 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1065 string (the result of converting the decoded input multibyte
1066 string to unibyte with `string-make-unibyte'). */)
1067 (Lisp_Object process
, Lisp_Object filter
)
1069 CHECK_PROCESS (process
);
1070 struct Lisp_Process
*p
= XPROCESS (process
);
1072 /* Don't signal an error if the process's input file descriptor
1073 is closed. This could make debugging Lisp more difficult,
1074 for example when doing something like
1076 (setq process (start-process ...))
1078 (set-process-filter process ...) */
1081 filter
= Qinternal_default_process_filter
;
1083 pset_filter (p
, filter
);
1086 set_process_filter_masks (p
);
1088 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1089 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1090 setup_process_coding_systems (process
);
1094 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1096 doc
: /* Return the filter function of PROCESS.
1097 See `set-process-filter' for more info on filter functions. */)
1098 (register Lisp_Object process
)
1100 CHECK_PROCESS (process
);
1101 return XPROCESS (process
)->filter
;
1104 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1106 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1107 The sentinel is called as a function when the process changes state.
1108 It gets two arguments: the process, and a string describing the change. */)
1109 (register Lisp_Object process
, Lisp_Object sentinel
)
1111 struct Lisp_Process
*p
;
1113 CHECK_PROCESS (process
);
1114 p
= XPROCESS (process
);
1116 if (NILP (sentinel
))
1117 sentinel
= Qinternal_default_process_sentinel
;
1119 pset_sentinel (p
, sentinel
);
1120 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1121 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1125 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1127 doc
: /* Return the sentinel of PROCESS.
1128 See `set-process-sentinel' for more info on sentinels. */)
1129 (register Lisp_Object process
)
1131 CHECK_PROCESS (process
);
1132 return XPROCESS (process
)->sentinel
;
1135 DEFUN ("set-process-window-size", Fset_process_window_size
,
1136 Sset_process_window_size
, 3, 3, 0,
1137 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1138 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1140 CHECK_PROCESS (process
);
1142 /* All known platforms store window sizes as 'unsigned short'. */
1143 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1144 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1146 if (NETCONN_P (process
)
1147 || XPROCESS (process
)->infd
< 0
1148 || (set_window_size (XPROCESS (process
)->infd
,
1149 XINT (height
), XINT (width
))
1156 DEFUN ("set-process-inherit-coding-system-flag",
1157 Fset_process_inherit_coding_system_flag
,
1158 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1159 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1160 If the second argument FLAG is non-nil, then the variable
1161 `buffer-file-coding-system' of the buffer associated with PROCESS
1162 will be bound to the value of the coding system used to decode
1165 This is useful when the coding system specified for the process buffer
1166 leaves either the character code conversion or the end-of-line conversion
1167 unspecified, or if the coding system used to decode the process output
1168 is more appropriate for saving the process buffer.
1170 Binding the variable `inherit-process-coding-system' to non-nil before
1171 starting the process is an alternative way of setting the inherit flag
1172 for the process which will run.
1174 This function returns FLAG. */)
1175 (register Lisp_Object process
, Lisp_Object flag
)
1177 CHECK_PROCESS (process
);
1178 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1182 DEFUN ("set-process-query-on-exit-flag",
1183 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1185 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1186 If the second argument FLAG is non-nil, Emacs will query the user before
1187 exiting or killing a buffer if PROCESS is running. This function
1189 (register Lisp_Object process
, Lisp_Object flag
)
1191 CHECK_PROCESS (process
);
1192 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1196 DEFUN ("process-query-on-exit-flag",
1197 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1199 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1200 (register Lisp_Object process
)
1202 CHECK_PROCESS (process
);
1203 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1206 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1208 doc
: /* Return the contact info of PROCESS; t for a real child.
1209 For a network or serial connection, the value depends on the optional
1210 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1211 SERVICE) for a network connection or (PORT SPEED) for a serial
1212 connection. If KEY is t, the complete contact information for the
1213 connection is returned, else the specific value for the keyword KEY is
1214 returned. See `make-network-process' or `make-serial-process' for a
1216 If PROCESS is a non-blocking network process that hasn't been fully
1217 set up yet, this function will block until socket setup has completed. */)
1218 (Lisp_Object process
, Lisp_Object key
)
1220 Lisp_Object contact
;
1222 CHECK_PROCESS (process
);
1223 contact
= XPROCESS (process
)->childp
;
1225 #ifdef DATAGRAM_SOCKETS
1227 if (NETCONN_P (process
))
1228 wait_for_socket_fds (process
, "process-contact");
1230 if (DATAGRAM_CONN_P (process
)
1231 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1232 contact
= Fplist_put (contact
, QCremote
,
1233 Fprocess_datagram_address (process
));
1236 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
) && !PIPECONN_P (process
))
1239 if (NILP (key
) && NETCONN_P (process
))
1240 return list2 (Fplist_get (contact
, QChost
),
1241 Fplist_get (contact
, QCservice
));
1242 if (NILP (key
) && SERIALCONN_P (process
))
1243 return list2 (Fplist_get (contact
, QCport
),
1244 Fplist_get (contact
, QCspeed
));
1245 /* FIXME: Return a meaningful value (e.g., the child end of the pipe)
1246 if the pipe process is useful for purposes other than receiving
1248 if (NILP (key
) && PIPECONN_P (process
))
1250 return Fplist_get (contact
, key
);
1253 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1255 doc
: /* Return the plist of PROCESS. */)
1256 (register Lisp_Object process
)
1258 CHECK_PROCESS (process
);
1259 return XPROCESS (process
)->plist
;
1262 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1264 doc
: /* Replace the plist of PROCESS with PLIST. Return PLIST. */)
1265 (Lisp_Object process
, Lisp_Object plist
)
1267 CHECK_PROCESS (process
);
1270 pset_plist (XPROCESS (process
), plist
);
1274 #if 0 /* Turned off because we don't currently record this info
1275 in the process. Perhaps add it. */
1276 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1277 doc
: /* Return the connection type of PROCESS.
1278 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1279 a socket connection. */)
1280 (Lisp_Object process
)
1282 return XPROCESS (process
)->type
;
1286 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1287 doc
: /* Return the connection type of PROCESS.
1288 The value is either the symbol `real', `network', or `serial'.
1289 PROCESS may be a process, a buffer, the name of a process or buffer, or
1290 nil, indicating the current buffer's process. */)
1291 (Lisp_Object process
)
1294 proc
= get_process (process
);
1295 return XPROCESS (proc
)->type
;
1298 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1300 doc
: /* Convert network ADDRESS from internal format to a string.
1301 A 4 or 5 element vector represents an IPv4 address (with port number).
1302 An 8 or 9 element vector represents an IPv6 address (with port number).
1303 If optional second argument OMIT-PORT is non-nil, don't include a port
1304 number in the string, even when present in ADDRESS.
1305 Return nil if format of ADDRESS is invalid. */)
1306 (Lisp_Object address
, Lisp_Object omit_port
)
1311 if (STRINGP (address
)) /* AF_LOCAL */
1314 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1316 register struct Lisp_Vector
*p
= XVECTOR (address
);
1317 ptrdiff_t size
= p
->header
.size
;
1318 Lisp_Object args
[10];
1322 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1324 format
= "%d.%d.%d.%d";
1329 format
= "%d.%d.%d.%d:%d";
1332 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1334 format
= "%x:%x:%x:%x:%x:%x:%x:%x";
1339 format
= "[%x:%x:%x:%x:%x:%x:%x:%x]:%d";
1345 AUTO_STRING (format_obj
, format
);
1346 args
[0] = format_obj
;
1348 for (i
= 0; i
< nargs
; i
++)
1350 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1353 if (nargs
<= 5 /* IPv4 */
1354 && i
< 4 /* host, not port */
1355 && XINT (p
->contents
[i
]) > 255)
1358 args
[i
+ 1] = p
->contents
[i
];
1361 return Fformat (nargs
+ 1, args
);
1364 if (CONSP (address
))
1366 AUTO_STRING (format
, "<Family %d>");
1367 return CALLN (Fformat
, format
, Fcar (address
));
1373 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1374 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1377 return Fmapcar (Qcdr
, Vprocess_alist
);
1380 /* Starting asynchronous inferior processes. */
1382 static void start_process_unwind (Lisp_Object proc
);
1384 DEFUN ("make-process", Fmake_process
, Smake_process
, 0, MANY
, 0,
1385 doc
: /* Start a program in a subprocess. Return the process object for it.
1387 This is similar to `start-process', but arguments are specified as
1388 keyword/argument pairs. The following arguments are defined:
1390 :name NAME -- NAME is name for process. It is modified if necessary
1393 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
1394 with the process. Process output goes at end of that buffer, unless
1395 you specify an output stream or filter function to handle the output.
1396 BUFFER may be also nil, meaning that this process is not associated
1399 :command COMMAND -- COMMAND is a list starting with the program file
1400 name, followed by strings to give to the program as arguments.
1402 :coding CODING -- If CODING is a symbol, it specifies the coding
1403 system used for both reading and writing for this process. If CODING
1404 is a cons (DECODING . ENCODING), DECODING is used for reading, and
1405 ENCODING is used for writing.
1407 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
1408 the process is running. If BOOL is not given, query before exiting.
1410 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
1411 In the stopped state, a process does not accept incoming data, but you
1412 can send outgoing data. The stopped state is cleared by
1413 `continue-process' and set by `stop-process'.
1415 :connection-type TYPE -- TYPE is control type of device used to
1416 communicate with subprocesses. Values are `pipe' to use a pipe, `pty'
1417 to use a pty, or nil to use the default specified through
1418 `process-connection-type'.
1420 :filter FILTER -- Install FILTER as the process filter.
1422 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
1424 :stderr STDERR -- STDERR is either a buffer or a pipe process attached
1425 to the standard error of subprocess. Specifying this implies
1426 `:connection-type' is set to `pipe'.
1428 usage: (make-process &rest ARGS) */)
1429 (ptrdiff_t nargs
, Lisp_Object
*args
)
1431 Lisp_Object buffer
, name
, command
, program
, proc
, contact
, current_dir
, tem
;
1432 Lisp_Object xstderr
, stderrproc
;
1433 ptrdiff_t count
= SPECPDL_INDEX ();
1439 /* Save arguments for process-contact and clone-process. */
1440 contact
= Flist (nargs
, args
);
1442 buffer
= Fplist_get (contact
, QCbuffer
);
1444 buffer
= Fget_buffer_create (buffer
);
1446 /* Make sure that the child will be able to chdir to the current
1447 buffer's current directory, or its unhandled equivalent. We
1448 can't just have the child check for an error when it does the
1449 chdir, since it's in a vfork. */
1450 current_dir
= encode_current_directory ();
1452 name
= Fplist_get (contact
, QCname
);
1453 CHECK_STRING (name
);
1455 command
= Fplist_get (contact
, QCcommand
);
1456 if (CONSP (command
))
1457 program
= XCAR (command
);
1461 if (!NILP (program
))
1462 CHECK_STRING (program
);
1465 xstderr
= Fplist_get (contact
, QCstderr
);
1466 if (PROCESSP (xstderr
))
1468 if (!PIPECONN_P (xstderr
))
1469 error ("Process is not a pipe process");
1470 stderrproc
= xstderr
;
1472 else if (!NILP (xstderr
))
1474 CHECK_STRING (program
);
1475 stderrproc
= CALLN (Fmake_pipe_process
,
1477 concat2 (name
, build_string (" stderr")),
1479 Fget_buffer_create (xstderr
));
1482 proc
= make_process (name
);
1483 /* If an error occurs and we can't start the process, we want to
1484 remove it from the process list. This means that each error
1485 check in create_process doesn't need to call remove_process
1486 itself; it's all taken care of here. */
1487 record_unwind_protect (start_process_unwind
, proc
);
1489 pset_childp (XPROCESS (proc
), Qt
);
1490 pset_plist (XPROCESS (proc
), Qnil
);
1491 pset_type (XPROCESS (proc
), Qreal
);
1492 pset_buffer (XPROCESS (proc
), buffer
);
1493 pset_sentinel (XPROCESS (proc
), Fplist_get (contact
, QCsentinel
));
1494 pset_filter (XPROCESS (proc
), Fplist_get (contact
, QCfilter
));
1495 pset_command (XPROCESS (proc
), Fcopy_sequence (command
));
1497 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
1498 XPROCESS (proc
)->kill_without_query
= 1;
1499 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
1500 pset_command (XPROCESS (proc
), Qt
);
1502 tem
= Fplist_get (contact
, QCconnection_type
);
1504 XPROCESS (proc
)->pty_flag
= true;
1505 else if (EQ (tem
, Qpipe
))
1506 XPROCESS (proc
)->pty_flag
= false;
1507 else if (NILP (tem
))
1508 XPROCESS (proc
)->pty_flag
= !NILP (Vprocess_connection_type
);
1510 report_file_error ("Unknown connection type", tem
);
1512 if (!NILP (stderrproc
))
1514 pset_stderrproc (XPROCESS (proc
), stderrproc
);
1516 XPROCESS (proc
)->pty_flag
= false;
1520 /* AKA GNUTLS_INITSTAGE(proc). */
1521 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1522 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1525 XPROCESS (proc
)->adaptive_read_buffering
1526 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1527 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1529 /* Make the process marker point into the process buffer (if any). */
1530 if (BUFFERP (buffer
))
1531 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1532 BUF_ZV (XBUFFER (buffer
)),
1533 BUF_ZV_BYTE (XBUFFER (buffer
)));
1536 /* Decide coding systems for communicating with the process. Here
1537 we don't setup the structure coding_system nor pay attention to
1538 unibyte mode. They are done in create_process. */
1540 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1541 Lisp_Object coding_systems
= Qt
;
1542 Lisp_Object val
, *args2
;
1544 tem
= Fplist_get (contact
, QCcoding
);
1552 val
= Vcoding_system_for_read
;
1555 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1557 SAFE_ALLOCA_LISP (args2
, nargs2
);
1559 args2
[i
++] = Qstart_process
;
1561 args2
[i
++] = buffer
;
1562 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1563 args2
[i
++] = XCAR (tem2
);
1564 if (!NILP (program
))
1565 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1566 if (CONSP (coding_systems
))
1567 val
= XCAR (coding_systems
);
1568 else if (CONSP (Vdefault_process_coding_system
))
1569 val
= XCAR (Vdefault_process_coding_system
);
1571 pset_decode_coding_system (XPROCESS (proc
), val
);
1580 val
= Vcoding_system_for_write
;
1583 if (EQ (coding_systems
, Qt
))
1585 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1587 SAFE_ALLOCA_LISP (args2
, nargs2
);
1589 args2
[i
++] = Qstart_process
;
1591 args2
[i
++] = buffer
;
1592 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1593 args2
[i
++] = XCAR (tem2
);
1594 if (!NILP (program
))
1595 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1597 if (CONSP (coding_systems
))
1598 val
= XCDR (coding_systems
);
1599 else if (CONSP (Vdefault_process_coding_system
))
1600 val
= XCDR (Vdefault_process_coding_system
);
1602 pset_encode_coding_system (XPROCESS (proc
), val
);
1603 /* Note: At this moment, the above coding system may leave
1604 text-conversion or eol-conversion unspecified. They will be
1605 decided after we read output from the process and decode it by
1606 some coding system, or just before we actually send a text to
1611 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1612 XPROCESS (proc
)->decoding_carryover
= 0;
1613 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1615 XPROCESS (proc
)->inherit_coding_system_flag
1616 = !(NILP (buffer
) || !inherit_process_coding_system
);
1618 if (!NILP (program
))
1620 Lisp_Object program_args
= XCDR (command
);
1622 /* If program file name is not absolute, search our path for it.
1623 Put the name we will really use in TEM. */
1624 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1625 && !(SCHARS (program
) > 1
1626 && IS_DEVICE_SEP (SREF (program
, 1))))
1629 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1630 make_number (X_OK
), false);
1632 report_file_error ("Searching for program", program
);
1633 tem
= Fexpand_file_name (tem
, Qnil
);
1637 if (!NILP (Ffile_directory_p (program
)))
1638 error ("Specified program for new process is a directory");
1642 /* Remove "/:" from TEM. */
1643 tem
= remove_slash_colon (tem
);
1645 Lisp_Object arg_encoding
= Qnil
;
1647 /* Encode the file name and put it in NEW_ARGV.
1648 That's where the child will use it to execute the program. */
1649 tem
= list1 (ENCODE_FILE (tem
));
1650 ptrdiff_t new_argc
= 1;
1652 /* Here we encode arguments by the coding system used for sending
1653 data to the process. We don't support using different coding
1654 systems for encoding arguments and for encoding data sent to the
1657 for (Lisp_Object tem2
= program_args
; CONSP (tem2
); tem2
= XCDR (tem2
))
1659 Lisp_Object arg
= XCAR (tem2
);
1661 if (STRING_MULTIBYTE (arg
))
1663 if (NILP (arg_encoding
))
1664 arg_encoding
= (complement_process_encoding_system
1665 (XPROCESS (proc
)->encode_coding_system
));
1666 arg
= code_convert_string_norecord (arg
, arg_encoding
, 1);
1668 tem
= Fcons (arg
, tem
);
1672 /* Now that everything is encoded we can collect the strings into
1675 SAFE_NALLOCA (new_argv
, 1, new_argc
+ 1);
1676 new_argv
[new_argc
] = 0;
1678 for (ptrdiff_t i
= new_argc
- 1; i
>= 0; i
--)
1680 new_argv
[i
] = SSDATA (XCAR (tem
));
1684 create_process (proc
, new_argv
, current_dir
);
1690 return unbind_to (count
, proc
);
1693 /* This function is the unwind_protect form for Fstart_process. If
1694 PROC doesn't have its pid set, then we know someone has signaled
1695 an error and the process wasn't started successfully, so we should
1696 remove it from the process list. */
1698 start_process_unwind (Lisp_Object proc
)
1700 if (!PROCESSP (proc
))
1703 /* Was PROC started successfully?
1704 -2 is used for a pty with no process, eg for gdb. */
1705 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1706 remove_process (proc
);
1709 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1712 close_process_fd (int *fd_addr
)
1722 /* Indexes of file descriptors in open_fds. */
1725 /* The pipe from Emacs to its subprocess. */
1727 WRITE_TO_SUBPROCESS
,
1729 /* The main pipe from the subprocess to Emacs. */
1730 READ_FROM_SUBPROCESS
,
1733 /* The pipe from the subprocess to Emacs that is closed when the
1734 subprocess execs. */
1735 READ_FROM_EXEC_MONITOR
,
1739 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1742 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1744 struct Lisp_Process
*p
= XPROCESS (process
);
1745 int inchannel
, outchannel
;
1748 int forkin
, forkout
, forkerr
= -1;
1750 char pty_name
[PTY_NAME_SIZE
];
1751 Lisp_Object lisp_pty_name
= Qnil
;
1754 inchannel
= outchannel
= -1;
1757 outchannel
= inchannel
= allocate_pty (pty_name
);
1761 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1762 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1763 /* On most USG systems it does not work to open the pty's tty here,
1764 then close it and reopen it in the child. */
1765 /* Don't let this terminal become our controlling terminal
1766 (in case we don't have one). */
1767 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1769 report_file_error ("Opening pty", Qnil
);
1770 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1772 forkin
= forkout
= -1;
1773 #endif /* not USG, or USG_SUBTTY_WORKS */
1775 lisp_pty_name
= build_string (pty_name
);
1779 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1780 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1781 report_file_error ("Creating pipe", Qnil
);
1782 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1783 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1784 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1785 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1787 if (!NILP (p
->stderrproc
))
1789 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
1791 forkerr
= pp
->open_fd
[SUBPROCESS_STDOUT
];
1793 /* Close unnecessary file descriptors. */
1794 close_process_fd (&pp
->open_fd
[WRITE_TO_SUBPROCESS
]);
1795 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDIN
]);
1800 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1801 report_file_error ("Creating pipe", Qnil
);
1804 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1805 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1807 /* Record this as an active process, with its channels. */
1808 chan_process
[inchannel
] = process
;
1809 p
->infd
= inchannel
;
1810 p
->outfd
= outchannel
;
1812 /* Previously we recorded the tty descriptor used in the subprocess.
1813 It was only used for getting the foreground tty process, so now
1814 we just reopen the device (see emacs_get_tty_pgrp) as this is
1815 more portable (see USG_SUBTTY_WORKS above). */
1817 p
->pty_flag
= pty_flag
;
1818 pset_status (p
, Qrun
);
1820 if (!EQ (p
->command
, Qt
))
1822 FD_SET (inchannel
, &input_wait_mask
);
1823 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1826 if (inchannel
> max_process_desc
)
1827 max_process_desc
= inchannel
;
1829 /* This may signal an error. */
1830 setup_process_coding_systems (process
);
1833 block_child_signal (&oldset
);
1836 /* vfork, and prevent local vars from being clobbered by the vfork. */
1837 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1838 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1839 char **volatile new_argv_volatile
= new_argv
;
1840 int volatile forkin_volatile
= forkin
;
1841 int volatile forkout_volatile
= forkout
;
1842 int volatile forkerr_volatile
= forkerr
;
1843 struct Lisp_Process
*p_volatile
= p
;
1847 current_dir
= current_dir_volatile
;
1848 lisp_pty_name
= lisp_pty_name_volatile
;
1849 new_argv
= new_argv_volatile
;
1850 forkin
= forkin_volatile
;
1851 forkout
= forkout_volatile
;
1852 forkerr
= forkerr_volatile
;
1855 pty_flag
= p
->pty_flag
;
1858 #endif /* not WINDOWSNT */
1860 /* Make the pty be the controlling terminal of the process. */
1862 /* First, disconnect its current controlling terminal. */
1863 /* We tried doing setsid only if pty_flag, but it caused
1864 process_set_signal to fail on SGI when using a pipe. */
1866 /* Make the pty's terminal the controlling terminal. */
1867 if (pty_flag
&& forkin
>= 0)
1870 /* We ignore the return value
1871 because faith@cs.unc.edu says that is necessary on Linux. */
1872 ioctl (forkin
, TIOCSCTTY
, 0);
1875 #if defined (LDISC1)
1876 if (pty_flag
&& forkin
>= 0)
1879 tcgetattr (forkin
, &t
);
1881 if (tcsetattr (forkin
, TCSANOW
, &t
) < 0)
1882 emacs_perror ("create_process/tcsetattr LDISC1");
1885 #if defined (NTTYDISC) && defined (TIOCSETD)
1886 if (pty_flag
&& forkin
>= 0)
1888 /* Use new line discipline. */
1889 int ldisc
= NTTYDISC
;
1890 ioctl (forkin
, TIOCSETD
, &ldisc
);
1895 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1896 can do TIOCSPGRP only to the process's controlling tty. */
1899 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1900 I can't test it since I don't have 4.3. */
1901 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1904 ioctl (j
, TIOCNOTTY
, 0);
1908 #endif /* TIOCNOTTY */
1910 #if !defined (DONT_REOPEN_PTY)
1911 /*** There is a suggestion that this ought to be a
1912 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1913 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1914 that system does seem to need this code, even though
1915 both TIOCSCTTY is defined. */
1916 /* Now close the pty (if we had it open) and reopen it.
1917 This makes the pty the controlling terminal of the subprocess. */
1921 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1924 emacs_close (forkin
);
1925 forkout
= forkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1929 emacs_perror (SSDATA (lisp_pty_name
));
1930 _exit (EXIT_CANCELED
);
1934 #endif /* not DONT_REOPEN_PTY */
1936 #ifdef SETUP_SLAVE_PTY
1941 #endif /* SETUP_SLAVE_PTY */
1942 #endif /* HAVE_PTYS */
1944 signal (SIGINT
, SIG_DFL
);
1945 signal (SIGQUIT
, SIG_DFL
);
1947 signal (SIGPROF
, SIG_DFL
);
1950 /* Emacs ignores SIGPIPE, but the child should not. */
1951 signal (SIGPIPE
, SIG_DFL
);
1953 /* Stop blocking SIGCHLD in the child. */
1954 unblock_child_signal (&oldset
);
1957 child_setup_tty (forkout
);
1962 pid
= child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1963 #else /* not WINDOWSNT */
1964 child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1965 #endif /* not WINDOWSNT */
1968 /* Back in the parent process. */
1970 vfork_errno
= errno
;
1975 /* Stop blocking in the parent. */
1976 unblock_child_signal (&oldset
);
1980 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1983 /* vfork succeeded. */
1985 /* Close the pipe ends that the child uses, or the child's pty. */
1986 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1987 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1990 register_child (pid
, inchannel
);
1991 #endif /* WINDOWSNT */
1993 pset_tty_name (p
, lisp_pty_name
);
1996 /* Wait for child_setup to complete in case that vfork is
1997 actually defined as fork. The descriptor
1998 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1999 of a pipe is closed at the child side either by close-on-exec
2000 on successful execve or the _exit call in child_setup. */
2004 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
2005 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
2006 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
2009 if (!NILP (p
->stderrproc
))
2011 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
2012 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDOUT
]);
2018 create_pty (Lisp_Object process
)
2020 struct Lisp_Process
*p
= XPROCESS (process
);
2021 char pty_name
[PTY_NAME_SIZE
];
2022 int pty_fd
= !p
->pty_flag
? -1 : allocate_pty (pty_name
);
2026 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
2027 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2028 /* On most USG systems it does not work to open the pty's tty here,
2029 then close it and reopen it in the child. */
2030 /* Don't let this terminal become our controlling terminal
2031 (in case we don't have one). */
2032 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2034 report_file_error ("Opening pty", Qnil
);
2035 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
2036 #if defined (DONT_REOPEN_PTY)
2037 /* In the case that vfork is defined as fork, the parent process
2038 (Emacs) may send some data before the child process completes
2039 tty options setup. So we setup tty before forking. */
2040 child_setup_tty (forkout
);
2041 #endif /* DONT_REOPEN_PTY */
2042 #endif /* not USG, or USG_SUBTTY_WORKS */
2044 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
2046 /* Record this as an active process, with its channels.
2047 As a result, child_setup will close Emacs's side of the pipes. */
2048 chan_process
[pty_fd
] = process
;
2052 /* Previously we recorded the tty descriptor used in the subprocess.
2053 It was only used for getting the foreground tty process, so now
2054 we just reopen the device (see emacs_get_tty_pgrp) as this is
2055 more portable (see USG_SUBTTY_WORKS above). */
2058 pset_status (p
, Qrun
);
2059 setup_process_coding_systems (process
);
2061 FD_SET (pty_fd
, &input_wait_mask
);
2062 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
2063 if (pty_fd
> max_process_desc
)
2064 max_process_desc
= pty_fd
;
2066 pset_tty_name (p
, build_string (pty_name
));
2072 DEFUN ("make-pipe-process", Fmake_pipe_process
, Smake_pipe_process
,
2074 doc
: /* Create and return a bidirectional pipe process.
2076 In Emacs, pipes are represented by process objects, so input and
2077 output work as for subprocesses, and `delete-process' closes a pipe.
2078 However, a pipe process has no process id, it cannot be signaled,
2079 and the status codes are different from normal processes.
2081 Arguments are specified as keyword/argument pairs. The following
2082 arguments are defined:
2084 :name NAME -- NAME is the name of the process. It is modified if necessary to make it unique.
2086 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2087 with the process. Process output goes at the end of that buffer,
2088 unless you specify an output stream or filter function to handle the
2089 output. If BUFFER is not given, the value of NAME is used.
2091 :coding CODING -- If CODING is a symbol, it specifies the coding
2092 system used for both reading and writing for this process. If CODING
2093 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2094 ENCODING is used for writing.
2096 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2097 the process is running. If BOOL is not given, query before exiting.
2099 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2100 In the stopped state, a pipe process does not accept incoming data,
2101 but you can send outgoing data. The stopped state is cleared by
2102 `continue-process' and set by `stop-process'.
2104 :filter FILTER -- Install FILTER as the process filter.
2106 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2108 usage: (make-pipe-process &rest ARGS) */)
2109 (ptrdiff_t nargs
, Lisp_Object
*args
)
2111 Lisp_Object proc
, contact
;
2112 struct Lisp_Process
*p
;
2113 Lisp_Object name
, buffer
;
2115 ptrdiff_t specpdl_count
;
2116 int inchannel
, outchannel
;
2121 contact
= Flist (nargs
, args
);
2123 name
= Fplist_get (contact
, QCname
);
2124 CHECK_STRING (name
);
2125 proc
= make_process (name
);
2126 specpdl_count
= SPECPDL_INDEX ();
2127 record_unwind_protect (remove_process
, proc
);
2128 p
= XPROCESS (proc
);
2130 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
2131 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
2132 report_file_error ("Creating pipe", Qnil
);
2133 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
2134 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
2136 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2137 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2140 register_aux_fd (inchannel
);
2143 /* Record this as an active process, with its channels. */
2144 chan_process
[inchannel
] = proc
;
2145 p
->infd
= inchannel
;
2146 p
->outfd
= outchannel
;
2148 if (inchannel
> max_process_desc
)
2149 max_process_desc
= inchannel
;
2151 buffer
= Fplist_get (contact
, QCbuffer
);
2154 buffer
= Fget_buffer_create (buffer
);
2155 pset_buffer (p
, buffer
);
2157 pset_childp (p
, contact
);
2158 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2159 pset_type (p
, Qpipe
);
2160 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2161 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2163 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2164 p
->kill_without_query
= 1;
2165 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2166 pset_command (p
, Qt
);
2167 eassert (! p
->pty_flag
);
2169 if (!EQ (p
->command
, Qt
))
2171 FD_SET (inchannel
, &input_wait_mask
);
2172 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2174 p
->adaptive_read_buffering
2175 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
2176 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
2178 /* Make the process marker point into the process buffer (if any). */
2179 if (BUFFERP (buffer
))
2180 set_marker_both (p
->mark
, buffer
,
2181 BUF_ZV (XBUFFER (buffer
)),
2182 BUF_ZV_BYTE (XBUFFER (buffer
)));
2185 /* Setup coding systems for communicating with the network stream. */
2187 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2188 Lisp_Object coding_systems
= Qt
;
2191 tem
= Fplist_get (contact
, QCcoding
);
2199 else if (!NILP (Vcoding_system_for_read
))
2200 val
= Vcoding_system_for_read
;
2201 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2202 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2203 /* We dare not decode end-of-line format by setting VAL to
2204 Qraw_text, because the existing Emacs Lisp libraries
2205 assume that they receive bare code including a sequence of
2210 if (CONSP (coding_systems
))
2211 val
= XCAR (coding_systems
);
2212 else if (CONSP (Vdefault_process_coding_system
))
2213 val
= XCAR (Vdefault_process_coding_system
);
2217 pset_decode_coding_system (p
, val
);
2225 else if (!NILP (Vcoding_system_for_write
))
2226 val
= Vcoding_system_for_write
;
2227 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
2231 if (CONSP (coding_systems
))
2232 val
= XCDR (coding_systems
);
2233 else if (CONSP (Vdefault_process_coding_system
))
2234 val
= XCDR (Vdefault_process_coding_system
);
2238 pset_encode_coding_system (p
, val
);
2240 /* This may signal an error. */
2241 setup_process_coding_systems (proc
);
2243 specpdl_ptr
= specpdl
+ specpdl_count
;
2249 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2250 The address family of sa is not included in the result. */
2253 conv_sockaddr_to_lisp (struct sockaddr
*sa
, ptrdiff_t len
)
2255 Lisp_Object address
;
2258 struct Lisp_Vector
*p
;
2260 /* Workaround for a bug in getsockname on BSD: Names bound to
2261 sockets in the UNIX domain are inaccessible; getsockname returns
2262 a zero length name. */
2263 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2264 return empty_unibyte_string
;
2266 switch (sa
->sa_family
)
2270 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2271 len
= sizeof (sin
->sin_addr
) + 1;
2272 address
= Fmake_vector (make_number (len
), Qnil
);
2273 p
= XVECTOR (address
);
2274 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2275 cp
= (unsigned char *) &sin
->sin_addr
;
2281 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2282 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2283 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2284 address
= Fmake_vector (make_number (len
), Qnil
);
2285 p
= XVECTOR (address
);
2286 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2287 for (i
= 0; i
< len
; i
++)
2288 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2292 #ifdef HAVE_LOCAL_SOCKETS
2295 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2296 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2297 /* If the first byte is NUL, the name is a Linux abstract
2298 socket name, and the name can contain embedded NULs. If
2299 it's not, we have a NUL-terminated string. Be careful not
2300 to walk past the end of the object looking for the name
2301 terminator, however. */
2302 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2304 const char *terminator
2305 = memchr (sockun
->sun_path
, '\0', name_length
);
2308 name_length
= terminator
- (const char *) sockun
->sun_path
;
2311 return make_unibyte_string (sockun
->sun_path
, name_length
);
2315 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2316 address
= Fcons (make_number (sa
->sa_family
),
2317 Fmake_vector (make_number (len
), Qnil
));
2318 p
= XVECTOR (XCDR (address
));
2319 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2325 p
->contents
[i
++] = make_number (*cp
++);
2331 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2334 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2336 struct Lisp_Vector
*p
;
2338 if (VECTORP (address
))
2340 p
= XVECTOR (address
);
2341 if (p
->header
.size
== 5)
2344 return sizeof (struct sockaddr_in
);
2347 else if (p
->header
.size
== 9)
2349 *familyp
= AF_INET6
;
2350 return sizeof (struct sockaddr_in6
);
2354 #ifdef HAVE_LOCAL_SOCKETS
2355 else if (STRINGP (address
))
2357 *familyp
= AF_LOCAL
;
2358 return sizeof (struct sockaddr_un
);
2361 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2362 && VECTORP (XCDR (address
)))
2364 struct sockaddr
*sa
;
2365 p
= XVECTOR (XCDR (address
));
2366 if (MAX_ALLOCA
- sizeof sa
->sa_family
< p
->header
.size
)
2368 *familyp
= XINT (XCAR (address
));
2369 return p
->header
.size
+ sizeof (sa
->sa_family
);
2374 /* Convert an address object (vector or string) to an internal sockaddr.
2376 The address format has been basically validated by
2377 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2378 it could have come from user data. So if FAMILY is not valid,
2379 we return after zeroing *SA. */
2382 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2384 register struct Lisp_Vector
*p
;
2385 register unsigned char *cp
= NULL
;
2389 memset (sa
, 0, len
);
2391 if (VECTORP (address
))
2393 p
= XVECTOR (address
);
2394 if (family
== AF_INET
)
2396 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2397 len
= sizeof (sin
->sin_addr
) + 1;
2398 hostport
= XINT (p
->contents
[--len
]);
2399 sin
->sin_port
= htons (hostport
);
2400 cp
= (unsigned char *)&sin
->sin_addr
;
2401 sa
->sa_family
= family
;
2404 else if (family
== AF_INET6
)
2406 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2407 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2408 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2409 hostport
= XINT (p
->contents
[--len
]);
2410 sin6
->sin6_port
= htons (hostport
);
2411 for (i
= 0; i
< len
; i
++)
2412 if (INTEGERP (p
->contents
[i
]))
2414 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2417 sa
->sa_family
= family
;
2424 else if (STRINGP (address
))
2426 #ifdef HAVE_LOCAL_SOCKETS
2427 if (family
== AF_LOCAL
)
2429 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2430 cp
= SDATA (address
);
2431 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2432 sockun
->sun_path
[i
] = *cp
++;
2433 sa
->sa_family
= family
;
2440 p
= XVECTOR (XCDR (address
));
2441 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2444 for (i
= 0; i
< len
; i
++)
2445 if (INTEGERP (p
->contents
[i
]))
2446 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2449 #ifdef DATAGRAM_SOCKETS
2450 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2452 doc
: /* Get the current datagram address associated with PROCESS.
2453 If PROCESS is a non-blocking network process that hasn't been fully
2454 set up yet, this function will block until socket setup has completed. */)
2455 (Lisp_Object process
)
2459 CHECK_PROCESS (process
);
2461 if (NETCONN_P (process
))
2462 wait_for_socket_fds (process
, "process-datagram-address");
2464 if (!DATAGRAM_CONN_P (process
))
2467 channel
= XPROCESS (process
)->infd
;
2468 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2469 datagram_address
[channel
].len
);
2472 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2474 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2475 Return nil upon error setting address, ADDRESS otherwise.
2477 If PROCESS is a non-blocking network process that hasn't been fully
2478 set up yet, this function will block until socket setup has completed. */)
2479 (Lisp_Object process
, Lisp_Object address
)
2485 CHECK_PROCESS (process
);
2487 if (NETCONN_P (process
))
2488 wait_for_socket_fds (process
, "set-process-datagram-address");
2490 if (!DATAGRAM_CONN_P (process
))
2493 channel
= XPROCESS (process
)->infd
;
2495 len
= get_lisp_to_sockaddr_size (address
, &family
);
2496 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2498 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2504 static const struct socket_options
{
2505 /* The name of this option. Should be lowercase version of option
2506 name without SO_ prefix. */
2508 /* Option level SOL_... */
2510 /* Option number SO_... */
2512 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2513 enum { OPIX_NONE
= 0, OPIX_MISC
= 1, OPIX_REUSEADDR
= 2 } optbit
;
2514 } socket_options
[] =
2516 #ifdef SO_BINDTODEVICE
2517 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2520 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2523 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2526 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2529 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2532 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2535 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2538 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2540 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2543 /* Set option OPT to value VAL on socket S.
2545 Return (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2546 Signals an error if setting a known option fails.
2550 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2553 const struct socket_options
*sopt
;
2558 name
= SSDATA (SYMBOL_NAME (opt
));
2559 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2560 if (strcmp (name
, sopt
->name
) == 0)
2563 switch (sopt
->opttype
)
2568 optval
= NILP (val
) ? 0 : 1;
2569 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2570 &optval
, sizeof (optval
));
2577 if (TYPE_RANGED_INTEGERP (int, val
))
2578 optval
= XINT (val
);
2580 error ("Bad option value for %s", name
);
2581 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2582 &optval
, sizeof (optval
));
2586 #ifdef SO_BINDTODEVICE
2589 char devname
[IFNAMSIZ
+ 1];
2591 /* This is broken, at least in the Linux 2.4 kernel.
2592 To unbind, the arg must be a zero integer, not the empty string.
2593 This should work on all systems. KFS. 2003-09-23. */
2594 memset (devname
, 0, sizeof devname
);
2597 char *arg
= SSDATA (val
);
2598 int len
= min (strlen (arg
), IFNAMSIZ
);
2599 memcpy (devname
, arg
, len
);
2601 else if (!NILP (val
))
2602 error ("Bad option value for %s", name
);
2603 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2612 struct linger linger
;
2615 linger
.l_linger
= 0;
2616 if (TYPE_RANGED_INTEGERP (int, val
))
2617 linger
.l_linger
= XINT (val
);
2619 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2620 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2621 &linger
, sizeof (linger
));
2632 int setsockopt_errno
= errno
;
2633 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2637 return (1 << sopt
->optbit
);
2641 DEFUN ("set-network-process-option",
2642 Fset_network_process_option
, Sset_network_process_option
,
2644 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2645 See `make-network-process' for a list of options and values.
2646 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2647 OPTION is not a supported option, return nil instead; otherwise return t.
2649 If PROCESS is a non-blocking network process that hasn't been fully
2650 set up yet, this function will block until socket setup has completed. */)
2651 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2654 struct Lisp_Process
*p
;
2656 CHECK_PROCESS (process
);
2657 p
= XPROCESS (process
);
2658 if (!NETCONN1_P (p
))
2659 error ("Process is not a network process");
2661 wait_for_socket_fds (process
, "set-network-process-option");
2665 error ("Process is not running");
2667 if (set_socket_option (s
, option
, value
))
2669 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2673 if (NILP (no_error
))
2674 error ("Unknown or unsupported option");
2680 DEFUN ("serial-process-configure",
2681 Fserial_process_configure
,
2682 Sserial_process_configure
,
2684 doc
: /* Configure speed, bytesize, etc. of a serial process.
2686 Arguments are specified as keyword/argument pairs. Attributes that
2687 are not given are re-initialized from the process's current
2688 configuration (available via the function `process-contact') or set to
2689 reasonable default values. The following arguments are defined:
2695 -- Any of these arguments can be given to identify the process that is
2696 to be configured. If none of these arguments is given, the current
2697 buffer's process is used.
2699 :speed SPEED -- SPEED is the speed of the serial port in bits per
2700 second, also called baud rate. Any value can be given for SPEED, but
2701 most serial ports work only at a few defined values between 1200 and
2702 115200, with 9600 being the most common value. If SPEED is nil, the
2703 serial port is not configured any further, i.e., all other arguments
2704 are ignored. This may be useful for special serial ports such as
2705 Bluetooth-to-serial converters which can only be configured through AT
2706 commands. A value of nil for SPEED can be used only when passed
2707 through `make-serial-process' or `serial-term'.
2709 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2710 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2712 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2713 `odd' (use odd parity), or the symbol `even' (use even parity). If
2714 PARITY is not given, no parity is used.
2716 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2717 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2718 is not given or nil, 1 stopbit is used.
2720 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2721 flowcontrol to be used, which is either nil (don't use flowcontrol),
2722 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2723 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2724 flowcontrol is used.
2726 `serial-process-configure' is called by `make-serial-process' for the
2727 initial configuration of the serial port.
2731 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2733 \(serial-process-configure
2734 :buffer "COM1" :stopbits 1 :parity \\='odd :flowcontrol \\='hw)
2736 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2738 usage: (serial-process-configure &rest ARGS) */)
2739 (ptrdiff_t nargs
, Lisp_Object
*args
)
2741 struct Lisp_Process
*p
;
2742 Lisp_Object contact
= Qnil
;
2743 Lisp_Object proc
= Qnil
;
2745 contact
= Flist (nargs
, args
);
2747 proc
= Fplist_get (contact
, QCprocess
);
2749 proc
= Fplist_get (contact
, QCname
);
2751 proc
= Fplist_get (contact
, QCbuffer
);
2753 proc
= Fplist_get (contact
, QCport
);
2754 proc
= get_process (proc
);
2755 p
= XPROCESS (proc
);
2756 if (!EQ (p
->type
, Qserial
))
2757 error ("Not a serial process");
2759 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2762 serial_configure (p
, contact
);
2766 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2768 doc
: /* Create and return a serial port process.
2770 In Emacs, serial port connections are represented by process objects,
2771 so input and output work as for subprocesses, and `delete-process'
2772 closes a serial port connection. However, a serial process has no
2773 process id, it cannot be signaled, and the status codes are different
2774 from normal processes.
2776 `make-serial-process' creates a process and a buffer, on which you
2777 probably want to use `process-send-string'. Try \\[serial-term] for
2778 an interactive terminal. See below for examples.
2780 Arguments are specified as keyword/argument pairs. The following
2781 arguments are defined:
2783 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2784 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2785 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2786 the backslashes in strings).
2788 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2789 which this function calls.
2791 :name NAME -- NAME is the name of the process. If NAME is not given,
2792 the value of PORT is used.
2794 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2795 with the process. Process output goes at the end of that buffer,
2796 unless you specify an output stream or filter function to handle the
2797 output. If BUFFER is not given, the value of NAME is used.
2799 :coding CODING -- If CODING is a symbol, it specifies the coding
2800 system used for both reading and writing for this process. If CODING
2801 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2802 ENCODING is used for writing.
2804 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2805 the process is running. If BOOL is not given, query before exiting.
2807 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2808 In the stopped state, a serial process does not accept incoming data,
2809 but you can send outgoing data. The stopped state is cleared by
2810 `continue-process' and set by `stop-process'.
2812 :filter FILTER -- Install FILTER as the process filter.
2814 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2816 :plist PLIST -- Install PLIST as the initial plist of the process.
2822 -- This function calls `serial-process-configure' to handle these
2825 The original argument list, possibly modified by later configuration,
2826 is available via the function `process-contact'.
2830 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2832 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2834 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity \\='odd)
2836 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2838 usage: (make-serial-process &rest ARGS) */)
2839 (ptrdiff_t nargs
, Lisp_Object
*args
)
2842 Lisp_Object proc
, contact
, port
;
2843 struct Lisp_Process
*p
;
2844 Lisp_Object name
, buffer
;
2845 Lisp_Object tem
, val
;
2846 ptrdiff_t specpdl_count
;
2851 contact
= Flist (nargs
, args
);
2853 port
= Fplist_get (contact
, QCport
);
2855 error ("No port specified");
2856 CHECK_STRING (port
);
2858 if (NILP (Fplist_member (contact
, QCspeed
)))
2859 error (":speed not specified");
2860 if (!NILP (Fplist_get (contact
, QCspeed
)))
2861 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2863 name
= Fplist_get (contact
, QCname
);
2866 CHECK_STRING (name
);
2867 proc
= make_process (name
);
2868 specpdl_count
= SPECPDL_INDEX ();
2869 record_unwind_protect (remove_process
, proc
);
2870 p
= XPROCESS (proc
);
2872 fd
= serial_open (port
);
2873 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2876 if (fd
> max_process_desc
)
2877 max_process_desc
= fd
;
2878 chan_process
[fd
] = proc
;
2880 buffer
= Fplist_get (contact
, QCbuffer
);
2883 buffer
= Fget_buffer_create (buffer
);
2884 pset_buffer (p
, buffer
);
2886 pset_childp (p
, contact
);
2887 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2888 pset_type (p
, Qserial
);
2889 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2890 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2892 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2893 p
->kill_without_query
= 1;
2894 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2895 pset_command (p
, Qt
);
2896 eassert (! p
->pty_flag
);
2898 if (!EQ (p
->command
, Qt
))
2900 FD_SET (fd
, &input_wait_mask
);
2901 FD_SET (fd
, &non_keyboard_wait_mask
);
2904 if (BUFFERP (buffer
))
2906 set_marker_both (p
->mark
, buffer
,
2907 BUF_ZV (XBUFFER (buffer
)),
2908 BUF_ZV_BYTE (XBUFFER (buffer
)));
2911 tem
= Fplist_member (contact
, QCcoding
);
2912 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2918 val
= XCAR (XCDR (tem
));
2922 else if (!NILP (Vcoding_system_for_read
))
2923 val
= Vcoding_system_for_read
;
2924 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2925 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2927 pset_decode_coding_system (p
, val
);
2932 val
= XCAR (XCDR (tem
));
2936 else if (!NILP (Vcoding_system_for_write
))
2937 val
= Vcoding_system_for_write
;
2938 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2939 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2941 pset_encode_coding_system (p
, val
);
2943 setup_process_coding_systems (proc
);
2944 pset_decoding_buf (p
, empty_unibyte_string
);
2945 p
->decoding_carryover
= 0;
2946 pset_encoding_buf (p
, empty_unibyte_string
);
2947 p
->inherit_coding_system_flag
2948 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2950 Fserial_process_configure (nargs
, args
);
2952 specpdl_ptr
= specpdl
+ specpdl_count
;
2958 set_network_socket_coding_system (Lisp_Object proc
, Lisp_Object host
,
2959 Lisp_Object service
, Lisp_Object name
)
2962 struct Lisp_Process
*p
= XPROCESS (proc
);
2963 Lisp_Object contact
= p
->childp
;
2964 Lisp_Object coding_systems
= Qt
;
2967 tem
= Fplist_member (contact
, QCcoding
);
2968 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2969 tem
= Qnil
; /* No error message (too late!). */
2971 /* Setup coding systems for communicating with the network stream. */
2972 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2976 val
= XCAR (XCDR (tem
));
2980 else if (!NILP (Vcoding_system_for_read
))
2981 val
= Vcoding_system_for_read
;
2982 else if ((!NILP (p
->buffer
)
2983 && NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
2984 || (NILP (p
->buffer
)
2985 && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2986 /* We dare not decode end-of-line format by setting VAL to
2987 Qraw_text, because the existing Emacs Lisp libraries
2988 assume that they receive bare code including a sequence of
2993 if (NILP (host
) || NILP (service
))
2994 coding_systems
= Qnil
;
2996 coding_systems
= CALLN (Ffind_operation_coding_system
,
2997 Qopen_network_stream
, name
, p
->buffer
,
2999 if (CONSP (coding_systems
))
3000 val
= XCAR (coding_systems
);
3001 else if (CONSP (Vdefault_process_coding_system
))
3002 val
= XCAR (Vdefault_process_coding_system
);
3006 pset_decode_coding_system (p
, val
);
3010 val
= XCAR (XCDR (tem
));
3014 else if (!NILP (Vcoding_system_for_write
))
3015 val
= Vcoding_system_for_write
;
3016 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3020 if (EQ (coding_systems
, Qt
))
3022 if (NILP (host
) || NILP (service
))
3023 coding_systems
= Qnil
;
3025 coding_systems
= CALLN (Ffind_operation_coding_system
,
3026 Qopen_network_stream
, name
, p
->buffer
,
3029 if (CONSP (coding_systems
))
3030 val
= XCDR (coding_systems
);
3031 else if (CONSP (Vdefault_process_coding_system
))
3032 val
= XCDR (Vdefault_process_coding_system
);
3036 pset_encode_coding_system (p
, val
);
3038 pset_decoding_buf (p
, empty_unibyte_string
);
3039 p
->decoding_carryover
= 0;
3040 pset_encoding_buf (p
, empty_unibyte_string
);
3042 p
->inherit_coding_system_flag
3043 = !(!NILP (tem
) || NILP (p
->buffer
) || !inherit_process_coding_system
);
3048 finish_after_tls_connection (Lisp_Object proc
)
3050 struct Lisp_Process
*p
= XPROCESS (proc
);
3051 Lisp_Object contact
= p
->childp
;
3052 Lisp_Object result
= Qt
;
3054 if (!NILP (Ffboundp (Qnsm_verify_connection
)))
3055 result
= call3 (Qnsm_verify_connection
,
3057 Fplist_get (contact
, QChost
),
3058 Fplist_get (contact
, QCservice
));
3062 pset_status (p
, list2 (Qfailed
,
3063 build_string ("The Network Security Manager stopped the connections")));
3064 deactivate_process (proc
);
3068 /* If we cleared the connection wait mask before we did
3069 the TLS setup, then we have to say that the process
3070 is finally "open" here. */
3071 if (! FD_ISSET (p
->outfd
, &connect_wait_mask
))
3073 pset_status (p
, Qrun
);
3074 /* Execute the sentinel here. If we had relied on
3075 status_notify to do it later, it will read input
3076 from the process before calling the sentinel. */
3077 exec_sentinel (proc
, build_string ("open\n"));
3084 connect_network_socket (Lisp_Object proc
, Lisp_Object ip_addresses
,
3085 Lisp_Object use_external_socket_p
)
3087 ptrdiff_t count
= SPECPDL_INDEX ();
3089 int s
= -1, outch
, inch
;
3091 Lisp_Object ip_address
;
3093 struct sockaddr
*sa
= NULL
;
3096 struct Lisp_Process
*p
= XPROCESS (proc
);
3097 Lisp_Object contact
= p
->childp
;
3099 int socket_to_use
= -1;
3101 if (!NILP (use_external_socket_p
))
3103 socket_to_use
= external_sock_fd
;
3105 /* Ensure we don't consume the external socket twice. */
3106 external_sock_fd
= -1;
3109 /* Do this in case we never enter the while-loop below. */
3110 count1
= SPECPDL_INDEX ();
3113 while (!NILP (ip_addresses
))
3115 ip_address
= XCAR (ip_addresses
);
3116 ip_addresses
= XCDR (ip_addresses
);
3122 addrlen
= get_lisp_to_sockaddr_size (ip_address
, &family
);
3125 sa
= xmalloc (addrlen
);
3126 conv_lisp_to_sockaddr (family
, ip_address
, sa
, addrlen
);
3131 s
= socket (family
, p
->socktype
| SOCK_CLOEXEC
, p
->ai_protocol
);
3139 #ifdef DATAGRAM_SOCKETS
3140 if (!p
->is_server
&& p
->socktype
== SOCK_DGRAM
)
3142 #endif /* DATAGRAM_SOCKETS */
3144 if (p
->is_non_blocking_client
)
3146 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3156 /* Make us close S if quit. */
3157 record_unwind_protect_int (close_file_unwind
, s
);
3159 /* Parse network options in the arg list. We simply ignore anything
3160 which isn't a known option (including other keywords). An error
3161 is signaled if setting a known option fails. */
3163 Lisp_Object params
= contact
, key
, val
;
3165 while (!NILP (params
))
3167 key
= XCAR (params
);
3168 params
= XCDR (params
);
3169 val
= XCAR (params
);
3170 params
= XCDR (params
);
3171 optbits
|= set_socket_option (s
, key
, val
);
3177 /* Configure as a server socket. */
3179 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3180 explicit :reuseaddr key to override this. */
3181 #ifdef HAVE_LOCAL_SOCKETS
3182 if (family
!= AF_LOCAL
)
3184 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3187 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3188 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3191 /* If passed a socket descriptor, it should be already bound. */
3192 if (socket_to_use
< 0 && bind (s
, sa
, addrlen
) != 0)
3193 report_file_error ("Cannot bind server socket", Qnil
);
3195 #ifdef HAVE_GETSOCKNAME
3198 struct sockaddr_in sa1
;
3199 socklen_t len1
= sizeof (sa1
);
3200 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3202 Lisp_Object service
;
3203 service
= make_number (ntohs (sa1
.sin_port
));
3204 contact
= Fplist_put (contact
, QCservice
, service
);
3205 /* Save the port number so that we can stash it in
3206 the process object later. */
3207 ((struct sockaddr_in
*)sa
)->sin_port
= sa1
.sin_port
;
3212 if (p
->socktype
!= SOCK_DGRAM
&& listen (s
, p
->backlog
))
3213 report_file_error ("Cannot listen on server socket", Qnil
);
3221 ret
= connect (s
, sa
, addrlen
);
3224 if (ret
== 0 || xerrno
== EISCONN
)
3226 /* The unwind-protect will be discarded afterwards.
3227 Likewise for immediate_quit. */
3231 if (p
->is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3235 if (xerrno
== EINTR
)
3237 /* Unlike most other syscalls connect() cannot be called
3238 again. (That would return EALREADY.) The proper way to
3239 wait for completion is pselect(). */
3247 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3253 report_file_error ("Failed select", Qnil
);
3257 len
= sizeof xerrno
;
3258 eassert (FD_ISSET (s
, &fdset
));
3259 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3260 report_file_error ("Failed getsockopt", Qnil
);
3262 report_file_errno ("Failed connect", Qnil
, xerrno
);
3265 #endif /* !WINDOWSNT */
3269 /* Discard the unwind protect closing S. */
3270 specpdl_ptr
= specpdl
+ count1
;
3275 if (xerrno
== EINTR
)
3282 #ifdef DATAGRAM_SOCKETS
3283 if (p
->socktype
== SOCK_DGRAM
)
3285 if (datagram_address
[s
].sa
)
3288 datagram_address
[s
].sa
= xmalloc (addrlen
);
3289 datagram_address
[s
].len
= addrlen
;
3293 memset (datagram_address
[s
].sa
, 0, addrlen
);
3294 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3297 ptrdiff_t rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3298 if (rlen
!= 0 && rfamily
== family
3300 conv_lisp_to_sockaddr (rfamily
, remote
,
3301 datagram_address
[s
].sa
, rlen
);
3305 memcpy (datagram_address
[s
].sa
, sa
, addrlen
);
3309 contact
= Fplist_put (contact
, p
->is_server
? QClocal
: QCremote
,
3310 conv_sockaddr_to_lisp (sa
, addrlen
));
3311 #ifdef HAVE_GETSOCKNAME
3314 struct sockaddr_in sa1
;
3315 socklen_t len1
= sizeof (sa1
);
3316 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3317 contact
= Fplist_put (contact
, QClocal
,
3318 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3327 /* If non-blocking got this far - and failed - assume non-blocking is
3328 not supported after all. This is probably a wrong assumption, but
3329 the normal blocking calls to open-network-stream handles this error
3331 if (p
->is_non_blocking_client
)
3334 report_file_errno ((p
->is_server
3335 ? "make server process failed"
3336 : "make client process failed"),
3343 chan_process
[inch
] = proc
;
3345 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3347 p
= XPROCESS (proc
);
3348 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3352 /* Discard the unwind protect for closing S, if any. */
3353 specpdl_ptr
= specpdl
+ count1
;
3355 /* Unwind bind_polling_period and request_sigio. */
3356 unbind_to (count
, Qnil
);
3358 if (p
->is_server
&& p
->socktype
!= SOCK_DGRAM
)
3359 pset_status (p
, Qlisten
);
3361 /* Make the process marker point into the process buffer (if any). */
3362 if (BUFFERP (p
->buffer
))
3363 set_marker_both (p
->mark
, p
->buffer
,
3364 BUF_ZV (XBUFFER (p
->buffer
)),
3365 BUF_ZV_BYTE (XBUFFER (p
->buffer
)));
3367 if (p
->is_non_blocking_client
)
3369 /* We may get here if connect did succeed immediately. However,
3370 in that case, we still need to signal this like a non-blocking
3372 pset_status (p
, Qconnect
);
3373 if (!FD_ISSET (inch
, &connect_wait_mask
))
3375 FD_SET (inch
, &connect_wait_mask
);
3376 FD_SET (inch
, &write_mask
);
3377 num_pending_connects
++;
3381 /* A server may have a client filter setting of Qt, but it must
3382 still listen for incoming connects unless it is stopped. */
3383 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3384 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3386 FD_SET (inch
, &input_wait_mask
);
3387 FD_SET (inch
, &non_keyboard_wait_mask
);
3390 if (inch
> max_process_desc
)
3391 max_process_desc
= inch
;
3393 /* Set up the masks based on the process filter. */
3394 set_process_filter_masks (p
);
3396 setup_process_coding_systems (proc
);
3399 /* Continue the asynchronous connection. */
3400 if (!NILP (p
->gnutls_boot_parameters
))
3402 Lisp_Object boot
, params
= p
->gnutls_boot_parameters
;
3404 boot
= Fgnutls_boot (proc
, XCAR (params
), XCDR (params
));
3405 p
->gnutls_boot_parameters
= Qnil
;
3407 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
3408 /* Run sentinels, etc. */
3409 finish_after_tls_connection (proc
);
3410 else if (p
->gnutls_initstage
!= GNUTLS_STAGE_HANDSHAKE_TRIED
)
3412 deactivate_process (proc
);
3414 pset_status (p
, list2 (Qfailed
,
3415 build_string ("TLS negotiation failed")));
3417 pset_status (p
, list2 (Qfailed
, boot
));
3424 /* Create a network stream/datagram client/server process. Treated
3425 exactly like a normal process when reading and writing. Primary
3426 differences are in status display and process deletion. A network
3427 connection has no PID; you cannot signal it. All you can do is
3428 stop/continue it and deactivate/close it via delete-process. */
3430 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3432 doc
: /* Create and return a network server or client process.
3434 In Emacs, network connections are represented by process objects, so
3435 input and output work as for subprocesses and `delete-process' closes
3436 a network connection. However, a network process has no process id,
3437 it cannot be signaled, and the status codes are different from normal
3440 Arguments are specified as keyword/argument pairs. The following
3441 arguments are defined:
3443 :name NAME -- NAME is name for process. It is modified if necessary
3446 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3447 with the process. Process output goes at end of that buffer, unless
3448 you specify an output stream or filter function to handle the output.
3449 BUFFER may be also nil, meaning that this process is not associated
3452 :host HOST -- HOST is name of the host to connect to, or its IP
3453 address. The symbol `local' specifies the local host. If specified
3454 for a server process, it must be a valid name or address for the local
3455 host, and only clients connecting to that address will be accepted.
3457 :service SERVICE -- SERVICE is name of the service desired, or an
3458 integer specifying a port number to connect to. If SERVICE is t,
3459 a random port number is selected for the server. A port number can
3460 be specified as an integer string, e.g., "80", as well as an integer.
3462 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3463 stream type connection, `datagram' creates a datagram type connection,
3464 `seqpacket' creates a reliable datagram connection.
3466 :family FAMILY -- FAMILY is the address (and protocol) family for the
3467 service specified by HOST and SERVICE. The default (nil) is to use
3468 whatever address family (IPv4 or IPv6) that is defined for the host
3469 and port number specified by HOST and SERVICE. Other address families
3471 local -- for a local (i.e. UNIX) address specified by SERVICE.
3472 ipv4 -- use IPv4 address family only.
3473 ipv6 -- use IPv6 address family only.
3475 :local ADDRESS -- ADDRESS is the local address used for the connection.
3476 This parameter is ignored when opening a client process. When specified
3477 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3479 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3480 connection. This parameter is ignored when opening a stream server
3481 process. For a datagram server process, it specifies the initial
3482 setting of the remote datagram address. When specified for a client
3483 process, the FAMILY, HOST, and SERVICE args are ignored.
3485 The format of ADDRESS depends on the address family:
3486 - An IPv4 address is represented as an vector of integers [A B C D P]
3487 corresponding to numeric IP address A.B.C.D and port number P.
3488 - A local address is represented as a string with the address in the
3489 local address space.
3490 - An "unsupported family" address is represented by a cons (F . AV)
3491 where F is the family number and AV is a vector containing the socket
3492 address data with one element per address data byte. Do not rely on
3493 this format in portable code, as it may depend on implementation
3494 defined constants, data sizes, and data structure alignment.
3496 :coding CODING -- If CODING is a symbol, it specifies the coding
3497 system used for both reading and writing for this process. If CODING
3498 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3499 ENCODING is used for writing.
3501 :nowait BOOL -- If NOWAIT is non-nil for a stream type client
3502 process, return without waiting for the connection to complete;
3503 instead, the sentinel function will be called with second arg matching
3504 "open" (if successful) or "failed" when the connect completes.
3505 Default is to use a blocking connect (i.e. wait) for stream type
3508 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3509 running when Emacs is exited.
3511 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3512 In the stopped state, a server process does not accept new
3513 connections, and a client process does not handle incoming traffic.
3514 The stopped state is cleared by `continue-process' and set by
3517 :filter FILTER -- Install FILTER as the process filter.
3519 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3520 process filter are multibyte, otherwise they are unibyte.
3521 If this keyword is not specified, the strings are multibyte if
3522 the default value of `enable-multibyte-characters' is non-nil.
3524 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3526 :log LOG -- Install LOG as the server process log function. This
3527 function is called when the server accepts a network connection from a
3528 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3529 is the server process, CLIENT is the new process for the connection,
3530 and MESSAGE is a string.
3532 :plist PLIST -- Install PLIST as the new process's initial plist.
3534 :tls-parameters LIST -- is a list that should be supplied if you're
3535 opening a TLS connection. The first element is the TLS type (either
3536 `gnutls-x509pki' or `gnutls-anon'), and the remaining elements should
3537 be a keyword list accepted by gnutls-boot (as returned by
3538 `gnutls-boot-parameters').
3540 :server QLEN -- if QLEN is non-nil, create a server process for the
3541 specified FAMILY, SERVICE, and connection type (stream or datagram).
3542 If QLEN is an integer, it is used as the max. length of the server's
3543 pending connection queue (also known as the backlog); the default
3544 queue length is 5. Default is to create a client process.
3546 The following network options can be specified for this connection:
3548 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3549 :dontroute BOOL -- Only send to directly connected hosts.
3550 :keepalive BOOL -- Send keep-alive messages on network stream.
3551 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3552 :oobinline BOOL -- Place out-of-band data in receive data stream.
3553 :priority INT -- Set protocol defined priority for sent packets.
3554 :reuseaddr BOOL -- Allow reusing a recently used local address
3555 (this is allowed by default for a server process).
3556 :bindtodevice NAME -- bind to interface NAME. Using this may require
3557 special privileges on some systems.
3558 :use-external-socket BOOL -- Use any pre-allocated sockets that have
3559 been passed to Emacs. If Emacs wasn't
3560 passed a socket, this option is silently
3564 Consult the relevant system programmer's manual pages for more
3565 information on using these options.
3568 A server process will listen for and accept connections from clients.
3569 When a client connection is accepted, a new network process is created
3570 for the connection with the following parameters:
3572 - The client's process name is constructed by concatenating the server
3573 process's NAME and a client identification string.
3574 - If the FILTER argument is non-nil, the client process will not get a
3575 separate process buffer; otherwise, the client's process buffer is a newly
3576 created buffer named after the server process's BUFFER name or process
3577 NAME concatenated with the client identification string.
3578 - The connection type and the process filter and sentinel parameters are
3579 inherited from the server process's TYPE, FILTER and SENTINEL.
3580 - The client process's contact info is set according to the client's
3581 addressing information (typically an IP address and a port number).
3582 - The client process's plist is initialized from the server's plist.
3584 Notice that the FILTER and SENTINEL args are never used directly by
3585 the server process. Also, the BUFFER argument is not used directly by
3586 the server process, but via the optional :log function, accepted (and
3587 failed) connections may be logged in the server process's buffer.
3589 The original argument list, modified with the actual connection
3590 information, is available via the `process-contact' function.
3592 usage: (make-network-process &rest ARGS) */)
3593 (ptrdiff_t nargs
, Lisp_Object
*args
)
3596 Lisp_Object contact
;
3597 struct Lisp_Process
*p
;
3598 const char *portstring
;
3599 ptrdiff_t portstringlen ATTRIBUTE_UNUSED
;
3600 char portbuf
[INT_BUFSIZE_BOUND (EMACS_INT
)];
3601 #ifdef HAVE_LOCAL_SOCKETS
3602 struct sockaddr_un address_un
;
3606 Lisp_Object name
, buffer
, host
, service
, address
;
3607 Lisp_Object filter
, sentinel
, use_external_socket_p
;
3608 Lisp_Object ip_addresses
= Qnil
;
3611 int ai_protocol
= 0;
3612 #ifdef HAVE_GETADDRINFO_A
3613 struct gaicb
*dns_request
= NULL
;
3615 ptrdiff_t count
= SPECPDL_INDEX ();
3620 /* Save arguments for process-contact and clone-process. */
3621 contact
= Flist (nargs
, args
);
3624 /* Ensure socket support is loaded if available. */
3625 init_winsock (TRUE
);
3628 /* :type TYPE (nil: stream, datagram */
3629 tem
= Fplist_get (contact
, QCtype
);
3631 socktype
= SOCK_STREAM
;
3632 #ifdef DATAGRAM_SOCKETS
3633 else if (EQ (tem
, Qdatagram
))
3634 socktype
= SOCK_DGRAM
;
3636 #ifdef HAVE_SEQPACKET
3637 else if (EQ (tem
, Qseqpacket
))
3638 socktype
= SOCK_SEQPACKET
;
3641 error ("Unsupported connection type");
3643 name
= Fplist_get (contact
, QCname
);
3644 buffer
= Fplist_get (contact
, QCbuffer
);
3645 filter
= Fplist_get (contact
, QCfilter
);
3646 sentinel
= Fplist_get (contact
, QCsentinel
);
3647 use_external_socket_p
= Fplist_get (contact
, QCuse_external_socket
);
3649 CHECK_STRING (name
);
3651 /* :local ADDRESS or :remote ADDRESS */
3652 tem
= Fplist_get (contact
, QCserver
);
3654 address
= Fplist_get (contact
, QCremote
);
3656 address
= Fplist_get (contact
, QClocal
);
3657 if (!NILP (address
))
3659 host
= service
= Qnil
;
3661 if (!get_lisp_to_sockaddr_size (address
, &family
))
3662 error ("Malformed :address");
3664 ip_addresses
= list1 (address
);
3668 /* :family FAMILY -- nil (for Inet), local, or integer. */
3669 tem
= Fplist_get (contact
, QCfamily
);
3678 #ifdef HAVE_LOCAL_SOCKETS
3679 else if (EQ (tem
, Qlocal
))
3683 else if (EQ (tem
, Qipv6
))
3686 else if (EQ (tem
, Qipv4
))
3688 else if (TYPE_RANGED_INTEGERP (int, tem
))
3689 family
= XINT (tem
);
3691 error ("Unknown address family");
3693 /* :service SERVICE -- string, integer (port number), or t (random port). */
3694 service
= Fplist_get (contact
, QCservice
);
3696 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3697 host
= Fplist_get (contact
, QChost
);
3700 /* The "connection" function gets it bind info from the address we're
3701 given, so use this dummy address if nothing is specified. */
3702 #ifdef HAVE_LOCAL_SOCKETS
3703 if (family
!= AF_LOCAL
)
3705 host
= build_string ("127.0.0.1");
3709 if (EQ (host
, Qlocal
))
3710 /* Depending on setup, "localhost" may map to different IPv4 and/or
3711 IPv6 addresses, so it's better to be explicit (Bug#6781). */
3712 host
= build_string ("127.0.0.1");
3713 CHECK_STRING (host
);
3716 #ifdef HAVE_LOCAL_SOCKETS
3717 if (family
== AF_LOCAL
)
3721 message (":family local ignores the :host property");
3722 contact
= Fplist_put (contact
, QChost
, Qnil
);
3725 CHECK_STRING (service
);
3726 if (sizeof address_un
.sun_path
<= SBYTES (service
))
3727 error ("Service name too long");
3728 ip_addresses
= list1 (service
);
3733 /* Slow down polling to every ten seconds.
3734 Some kernels have a bug which causes retrying connect to fail
3735 after a connect. Polling can interfere with gethostbyname too. */
3736 #ifdef POLL_FOR_INPUT
3737 if (socktype
!= SOCK_DGRAM
)
3739 record_unwind_protect_void (run_all_atimers
);
3740 bind_polling_period (10);
3746 /* SERVICE can either be a string or int.
3747 Convert to a C string for later use by getaddrinfo. */
3748 if (EQ (service
, Qt
))
3753 else if (INTEGERP (service
))
3755 portstring
= portbuf
;
3756 portstringlen
= sprintf (portbuf
, "%"pI
"d", XINT (service
));
3760 CHECK_STRING (service
);
3761 portstring
= SSDATA (service
);
3762 portstringlen
= SBYTES (service
);
3766 #ifdef HAVE_GETADDRINFO_A
3767 if (!NILP (host
) && !NILP (Fplist_get (contact
, QCnowait
)))
3769 ptrdiff_t hostlen
= SBYTES (host
);
3773 struct addrinfo hints
;
3774 char str
[FLEXIBLE_ARRAY_MEMBER
];
3775 } *req
= xmalloc (offsetof (struct req
, str
)
3776 + hostlen
+ 1 + portstringlen
+ 1);
3777 dns_request
= &req
->gaicb
;
3778 dns_request
->ar_name
= req
->str
;
3779 dns_request
->ar_service
= req
->str
+ hostlen
+ 1;
3780 dns_request
->ar_request
= &req
->hints
;
3781 dns_request
->ar_result
= NULL
;
3782 memset (&req
->hints
, 0, sizeof req
->hints
);
3783 req
->hints
.ai_family
= family
;
3784 req
->hints
.ai_socktype
= socktype
;
3785 strcpy (req
->str
, SSDATA (host
));
3786 strcpy (req
->str
+ hostlen
+ 1, portstring
);
3788 int ret
= getaddrinfo_a (GAI_NOWAIT
, &dns_request
, 1, NULL
);
3790 error ("%s/%s getaddrinfo_a error %d", SSDATA (host
), portstring
, ret
);
3794 #endif /* HAVE_GETADDRINFO_A */
3796 /* If we have a host, use getaddrinfo to resolve both host and service.
3797 Otherwise, use getservbyname to lookup the service. */
3801 struct addrinfo
*res
, *lres
;
3807 struct addrinfo hints
;
3808 memset (&hints
, 0, sizeof hints
);
3809 hints
.ai_family
= family
;
3810 hints
.ai_socktype
= socktype
;
3812 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3814 #ifdef HAVE_GAI_STRERROR
3816 synchronize_system_messages_locale ();
3817 char const *str
= gai_strerror (ret
);
3818 if (! NILP (Vlocale_coding_system
))
3819 str
= SSDATA (code_convert_string_norecord
3820 (build_string (str
), Vlocale_coding_system
, 0));
3821 error ("%s/%s %s", SSDATA (host
), portstring
, str
);
3824 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3828 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3830 ip_addresses
= Fcons (conv_sockaddr_to_lisp
3831 (lres
->ai_addr
, lres
->ai_addrlen
),
3833 ai_protocol
= lres
->ai_protocol
;
3836 ip_addresses
= Fnreverse (ip_addresses
);
3843 /* No hostname has been specified (e.g., a local server process). */
3845 if (EQ (service
, Qt
))
3847 else if (INTEGERP (service
))
3848 port
= XINT (service
);
3851 CHECK_STRING (service
);
3854 if (SBYTES (service
) != 0)
3856 /* Allow the service to be a string containing the port number,
3857 because that's allowed if you have getaddrbyname. */
3859 long int lport
= strtol (SSDATA (service
), &service_end
, 10);
3860 if (service_end
== SSDATA (service
) + SBYTES (service
))
3864 struct servent
*svc_info
3865 = getservbyname (SSDATA (service
),
3866 socktype
== SOCK_DGRAM
? "udp" : "tcp");
3868 port
= ntohs (svc_info
->s_port
);
3873 if (! (0 <= port
&& port
< 1 << 16))
3875 AUTO_STRING (unknown_service
, "Unknown service: %s");
3876 xsignal1 (Qerror
, CALLN (Fformat
, unknown_service
, service
));
3882 buffer
= Fget_buffer_create (buffer
);
3883 proc
= make_process (name
);
3884 p
= XPROCESS (proc
);
3885 pset_childp (p
, contact
);
3886 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3887 pset_type (p
, Qnetwork
);
3889 pset_buffer (p
, buffer
);
3890 pset_sentinel (p
, sentinel
);
3891 pset_filter (p
, filter
);
3892 pset_log (p
, Fplist_get (contact
, QClog
));
3893 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3894 p
->kill_without_query
= 1;
3895 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3896 pset_command (p
, Qt
);
3899 p
->is_non_blocking_client
= false;
3900 p
->is_server
= false;
3902 p
->socktype
= socktype
;
3903 p
->ai_protocol
= ai_protocol
;
3904 #ifdef HAVE_GETADDRINFO_A
3905 p
->dns_request
= NULL
;
3908 tem
= Fplist_get (contact
, QCtls_parameters
);
3910 p
->gnutls_boot_parameters
= tem
;
3913 set_network_socket_coding_system (proc
, service
, host
, name
);
3915 unbind_to (count
, Qnil
);
3918 tem
= Fplist_get (contact
, QCserver
);
3921 /* Don't support network sockets when non-blocking mode is
3922 not available, since a blocked Emacs is not useful. */
3923 p
->is_server
= true;
3924 if (TYPE_RANGED_INTEGERP (int, tem
))
3925 p
->backlog
= XINT (tem
);
3929 if (!p
->is_server
&& socktype
!= SOCK_DGRAM
3930 && !NILP (Fplist_get (contact
, QCnowait
)))
3931 p
->is_non_blocking_client
= true;
3933 #ifdef HAVE_GETADDRINFO_A
3934 /* With async address resolution, the list of addresses is empty, so
3935 postpone connecting to the server. */
3936 if (!p
->is_server
&& NILP (ip_addresses
))
3938 p
->dns_request
= dns_request
;
3939 p
->status
= Qconnect
;
3944 connect_network_socket (proc
, ip_addresses
, use_external_socket_p
);
3949 #ifdef HAVE_NET_IF_H
3953 network_interface_list (void)
3955 struct ifconf ifconf
;
3956 struct ifreq
*ifreq
;
3958 ptrdiff_t buf_size
= 512;
3963 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3966 count
= SPECPDL_INDEX ();
3967 record_unwind_protect_int (close_file_unwind
, s
);
3971 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3972 ifconf
.ifc_buf
= buf
;
3973 ifconf
.ifc_len
= buf_size
;
3974 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3981 while (ifconf
.ifc_len
== buf_size
);
3983 res
= unbind_to (count
, Qnil
);
3984 ifreq
= ifconf
.ifc_req
;
3985 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3987 struct ifreq
*ifq
= ifreq
;
3988 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3989 #define SIZEOF_IFREQ(sif) \
3990 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3991 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3993 int len
= SIZEOF_IFREQ (ifq
);
3995 int len
= sizeof (*ifreq
);
3997 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3998 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
4000 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
4003 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
4004 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
4005 res
= Fcons (Fcons (build_string (namebuf
),
4006 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
4007 sizeof (struct sockaddr
))),
4014 #endif /* SIOCGIFCONF */
4016 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
4020 const char *flag_sym
;
4023 static const struct ifflag_def ifflag_table
[] = {
4027 #ifdef IFF_BROADCAST
4028 { IFF_BROADCAST
, "broadcast" },
4031 { IFF_DEBUG
, "debug" },
4034 { IFF_LOOPBACK
, "loopback" },
4036 #ifdef IFF_POINTOPOINT
4037 { IFF_POINTOPOINT
, "pointopoint" },
4040 { IFF_RUNNING
, "running" },
4043 { IFF_NOARP
, "noarp" },
4046 { IFF_PROMISC
, "promisc" },
4048 #ifdef IFF_NOTRAILERS
4049 #ifdef NS_IMPL_COCOA
4050 /* Really means smart, notrailers is obsolete. */
4051 { IFF_NOTRAILERS
, "smart" },
4053 { IFF_NOTRAILERS
, "notrailers" },
4057 { IFF_ALLMULTI
, "allmulti" },
4060 { IFF_MASTER
, "master" },
4063 { IFF_SLAVE
, "slave" },
4065 #ifdef IFF_MULTICAST
4066 { IFF_MULTICAST
, "multicast" },
4069 { IFF_PORTSEL
, "portsel" },
4071 #ifdef IFF_AUTOMEDIA
4072 { IFF_AUTOMEDIA
, "automedia" },
4075 { IFF_DYNAMIC
, "dynamic" },
4078 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress. */
4081 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions. */
4084 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit. */
4087 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit. */
4090 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit. */
4096 network_interface_info (Lisp_Object ifname
)
4099 Lisp_Object res
= Qnil
;
4104 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
4105 && defined HAVE_GETIFADDRS && defined LLADDR)
4106 struct ifaddrs
*ifap
;
4109 CHECK_STRING (ifname
);
4111 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
4112 error ("interface name too long");
4113 lispstpcpy (rq
.ifr_name
, ifname
);
4115 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
4118 count
= SPECPDL_INDEX ();
4119 record_unwind_protect_int (close_file_unwind
, s
);
4122 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
4123 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4125 int flags
= rq
.ifr_flags
;
4126 const struct ifflag_def
*fp
;
4129 /* If flags is smaller than int (i.e. short) it may have the high bit set
4130 due to IFF_MULTICAST. In that case, sign extending it into
4132 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
4133 flags
= (unsigned short) rq
.ifr_flags
;
4136 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4138 if (flags
& fp
->flag_bit
)
4140 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4141 flags
-= fp
->flag_bit
;
4144 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
4148 elt
= Fcons (make_number (fnum
), elt
);
4153 res
= Fcons (elt
, res
);
4156 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
4157 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4159 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4160 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4164 for (n
= 0; n
< 6; n
++)
4165 p
->contents
[n
] = make_number (((unsigned char *)
4166 &rq
.ifr_hwaddr
.sa_data
[0])
4168 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4170 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
4171 if (getifaddrs (&ifap
) != -1)
4173 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4174 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4177 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
4179 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
4180 unsigned char linkaddr
[6];
4183 if (it
->ifa_addr
->sa_family
!= AF_LINK
4184 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
4185 || sdl
->sdl_alen
!= 6)
4188 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
4189 for (n
= 0; n
< 6; n
++)
4190 p
->contents
[n
] = make_number (linkaddr
[n
]);
4192 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
4196 #ifdef HAVE_FREEIFADDRS
4200 #endif /* HAVE_GETIFADDRS && LLADDR */
4202 res
= Fcons (elt
, res
);
4205 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
4206 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4209 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4210 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4212 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4216 res
= Fcons (elt
, res
);
4219 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4220 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4223 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4226 res
= Fcons (elt
, res
);
4229 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
4230 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4233 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4236 res
= Fcons (elt
, res
);
4238 return unbind_to (count
, any
? res
: Qnil
);
4240 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
4241 #endif /* defined (HAVE_NET_IF_H) */
4243 DEFUN ("network-interface-list", Fnetwork_interface_list
,
4244 Snetwork_interface_list
, 0, 0, 0,
4245 doc
: /* Return an alist of all network interfaces and their network address.
4246 Each element is a cons, the car of which is a string containing the
4247 interface name, and the cdr is the network address in internal
4248 format; see the description of ADDRESS in `make-network-process'.
4250 If the information is not available, return nil. */)
4253 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
4254 return network_interface_list ();
4260 DEFUN ("network-interface-info", Fnetwork_interface_info
,
4261 Snetwork_interface_info
, 1, 1, 0,
4262 doc
: /* Return information about network interface named IFNAME.
4263 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4264 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4265 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
4266 FLAGS is the current flags of the interface.
4268 Data that is unavailable is returned as nil. */)
4269 (Lisp_Object ifname
)
4271 #if ((defined HAVE_NET_IF_H \
4272 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
4273 || defined SIOCGIFFLAGS)) \
4274 || defined WINDOWSNT)
4275 return network_interface_info (ifname
);
4281 /* Turn off input and output for process PROC. */
4284 deactivate_process (Lisp_Object proc
)
4287 struct Lisp_Process
*p
= XPROCESS (proc
);
4291 /* Delete GnuTLS structures in PROC, if any. */
4292 emacs_gnutls_deinit (proc
);
4293 #endif /* HAVE_GNUTLS */
4295 if (p
->read_output_delay
> 0)
4297 if (--process_output_delay_count
< 0)
4298 process_output_delay_count
= 0;
4299 p
->read_output_delay
= 0;
4300 p
->read_output_skip
= 0;
4303 /* Beware SIGCHLD hereabouts. */
4305 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
4306 close_process_fd (&p
->open_fd
[i
]);
4308 inchannel
= p
->infd
;
4313 #ifdef DATAGRAM_SOCKETS
4314 if (DATAGRAM_CHAN_P (inchannel
))
4316 xfree (datagram_address
[inchannel
].sa
);
4317 datagram_address
[inchannel
].sa
= 0;
4318 datagram_address
[inchannel
].len
= 0;
4321 chan_process
[inchannel
] = Qnil
;
4322 FD_CLR (inchannel
, &input_wait_mask
);
4323 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4324 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4326 FD_CLR (inchannel
, &connect_wait_mask
);
4327 FD_CLR (inchannel
, &write_mask
);
4328 if (--num_pending_connects
< 0)
4331 if (inchannel
== max_process_desc
)
4333 /* We just closed the highest-numbered process input descriptor,
4334 so recompute the highest-numbered one now. */
4338 while (0 <= i
&& NILP (chan_process
[i
]));
4340 max_process_desc
= i
;
4346 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4348 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4349 It is given to their filter functions.
4350 Optional argument PROCESS means do not return until output has been
4351 received from PROCESS.
4353 Optional second argument SECONDS and third argument MILLISEC
4354 specify a timeout; return after that much time even if there is
4355 no subprocess output. If SECONDS is a floating point number,
4356 it specifies a fractional number of seconds to wait.
4357 The MILLISEC argument is obsolete and should be avoided.
4359 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
4360 from PROCESS only, suspending reading output from other processes.
4361 If JUST-THIS-ONE is an integer, don't run any timers either.
4362 Return non-nil if we received any output from PROCESS (or, if PROCESS
4363 is nil, from any process) before the timeout expired. */)
4364 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4369 if (! NILP (process
))
4370 CHECK_PROCESS (process
);
4372 just_this_one
= Qnil
;
4374 if (!NILP (millisec
))
4375 { /* Obsolete calling convention using integers rather than floats. */
4376 CHECK_NUMBER (millisec
);
4378 seconds
= make_float (XINT (millisec
) / 1000.0);
4381 CHECK_NUMBER (seconds
);
4382 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4389 if (!NILP (seconds
))
4391 if (INTEGERP (seconds
))
4393 if (XINT (seconds
) > 0)
4395 secs
= XINT (seconds
);
4399 else if (FLOATP (seconds
))
4401 if (XFLOAT_DATA (seconds
) > 0)
4403 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
4404 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
4409 wrong_type_argument (Qnumberp
, seconds
);
4411 else if (! NILP (process
))
4415 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
4417 !NILP (process
) ? XPROCESS (process
) : NULL
,
4418 (NILP (just_this_one
) ? 0
4419 : !INTEGERP (just_this_one
) ? 1 : -1))
4424 /* Accept a connection for server process SERVER on CHANNEL. */
4426 static EMACS_INT connect_counter
= 0;
4429 server_accept_connection (Lisp_Object server
, int channel
)
4431 Lisp_Object proc
, caller
, name
, buffer
;
4432 Lisp_Object contact
, host
, service
;
4433 struct Lisp_Process
*ps
= XPROCESS (server
);
4434 struct Lisp_Process
*p
;
4438 struct sockaddr_in in
;
4440 struct sockaddr_in6 in6
;
4442 #ifdef HAVE_LOCAL_SOCKETS
4443 struct sockaddr_un un
;
4446 socklen_t len
= sizeof saddr
;
4449 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4458 if (code
== EWOULDBLOCK
)
4462 if (!NILP (ps
->log
))
4463 call3 (ps
->log
, server
, Qnil
,
4464 concat3 (build_string ("accept failed with code"),
4465 Fnumber_to_string (make_number (code
)),
4466 build_string ("\n")));
4470 count
= SPECPDL_INDEX ();
4471 record_unwind_protect_int (close_file_unwind
, s
);
4475 /* Setup a new process to handle the connection. */
4477 /* Generate a unique identification of the caller, and build contact
4478 information for this process. */
4481 switch (saddr
.sa
.sa_family
)
4485 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4487 AUTO_STRING (ipv4_format
, "%d.%d.%d.%d");
4488 host
= CALLN (Fformat
, ipv4_format
,
4489 make_number (ip
[0]), make_number (ip
[1]),
4490 make_number (ip
[2]), make_number (ip
[3]));
4491 service
= make_number (ntohs (saddr
.in
.sin_port
));
4492 AUTO_STRING (caller_format
, " <%s:%d>");
4493 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4500 Lisp_Object args
[9];
4501 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4504 AUTO_STRING (ipv6_format
, "%x:%x:%x:%x:%x:%x:%x:%x");
4505 args
[0] = ipv6_format
;
4506 for (i
= 0; i
< 8; i
++)
4507 args
[i
+ 1] = make_number (ntohs (ip6
[i
]));
4508 host
= CALLMANY (Fformat
, args
);
4509 service
= make_number (ntohs (saddr
.in
.sin_port
));
4510 AUTO_STRING (caller_format
, " <[%s]:%d>");
4511 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4516 #ifdef HAVE_LOCAL_SOCKETS
4520 caller
= Fnumber_to_string (make_number (connect_counter
));
4521 AUTO_STRING (space_less_than
, " <");
4522 AUTO_STRING (greater_than
, ">");
4523 caller
= concat3 (space_less_than
, caller
, greater_than
);
4527 /* Create a new buffer name for this process if it doesn't have a
4528 filter. The new buffer name is based on the buffer name or
4529 process name of the server process concatenated with the caller
4532 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4533 || EQ (ps
->filter
, Qt
)))
4537 buffer
= ps
->buffer
;
4539 buffer
= Fbuffer_name (buffer
);
4544 buffer
= concat2 (buffer
, caller
);
4545 buffer
= Fget_buffer_create (buffer
);
4549 /* Generate a unique name for the new server process. Combine the
4550 server process name with the caller identification. */
4552 name
= concat2 (ps
->name
, caller
);
4553 proc
= make_process (name
);
4555 chan_process
[s
] = proc
;
4557 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4559 p
= XPROCESS (proc
);
4561 /* Build new contact information for this setup. */
4562 contact
= Fcopy_sequence (ps
->childp
);
4563 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4564 contact
= Fplist_put (contact
, QChost
, host
);
4565 if (!NILP (service
))
4566 contact
= Fplist_put (contact
, QCservice
, service
);
4567 contact
= Fplist_put (contact
, QCremote
,
4568 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4569 #ifdef HAVE_GETSOCKNAME
4571 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4572 contact
= Fplist_put (contact
, QClocal
,
4573 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4576 pset_childp (p
, contact
);
4577 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4578 pset_type (p
, Qnetwork
);
4580 pset_buffer (p
, buffer
);
4581 pset_sentinel (p
, ps
->sentinel
);
4582 pset_filter (p
, ps
->filter
);
4583 pset_command (p
, Qnil
);
4586 /* Discard the unwind protect for closing S. */
4587 specpdl_ptr
= specpdl
+ count
;
4589 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4592 pset_status (p
, Qrun
);
4594 /* Client processes for accepted connections are not stopped initially. */
4595 if (!EQ (p
->filter
, Qt
))
4597 FD_SET (s
, &input_wait_mask
);
4598 FD_SET (s
, &non_keyboard_wait_mask
);
4601 if (s
> max_process_desc
)
4602 max_process_desc
= s
;
4604 /* Setup coding system for new process based on server process.
4605 This seems to be the proper thing to do, as the coding system
4606 of the new process should reflect the settings at the time the
4607 server socket was opened; not the current settings. */
4609 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4610 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4611 setup_process_coding_systems (proc
);
4613 pset_decoding_buf (p
, empty_unibyte_string
);
4614 p
->decoding_carryover
= 0;
4615 pset_encoding_buf (p
, empty_unibyte_string
);
4617 p
->inherit_coding_system_flag
4618 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4620 AUTO_STRING (dash
, "-");
4621 AUTO_STRING (nl
, "\n");
4622 Lisp_Object host_string
= STRINGP (host
) ? host
: dash
;
4624 if (!NILP (ps
->log
))
4626 AUTO_STRING (accept_from
, "accept from ");
4627 call3 (ps
->log
, server
, proc
, concat3 (accept_from
, host_string
, nl
));
4630 AUTO_STRING (open_from
, "open from ");
4631 exec_sentinel (proc
, concat3 (open_from
, host_string
, nl
));
4634 #ifdef HAVE_GETADDRINFO_A
4636 check_for_dns (Lisp_Object proc
)
4638 struct Lisp_Process
*p
= XPROCESS (proc
);
4639 Lisp_Object ip_addresses
= Qnil
;
4642 if (! p
->dns_request
)
4645 int ret
= gai_error (p
->dns_request
);
4646 if (ret
== EAI_INPROGRESS
)
4649 /* We got a response. */
4652 struct addrinfo
*res
;
4654 for (res
= p
->dns_request
->ar_result
; res
; res
= res
->ai_next
)
4656 ip_addresses
= Fcons (conv_sockaddr_to_lisp
4657 (res
->ai_addr
, res
->ai_addrlen
),
4661 ip_addresses
= Fnreverse (ip_addresses
);
4663 /* The DNS lookup failed. */
4664 else if (EQ (p
->status
, Qconnect
))
4666 deactivate_process (proc
);
4667 pset_status (p
, (list2
4669 concat3 (build_string ("Name lookup of "),
4670 build_string (p
->dns_request
->ar_name
),
4671 build_string (" failed")))));
4674 free_dns_request (proc
);
4676 /* This process should not already be connected (or killed). */
4677 if (!EQ (p
->status
, Qconnect
))
4680 return ip_addresses
;
4683 #endif /* HAVE_GETADDRINFO_A */
4686 wait_for_socket_fds (Lisp_Object process
, char const *name
)
4688 while (XPROCESS (process
)->infd
< 0
4689 && EQ (XPROCESS (process
)->status
, Qconnect
))
4691 add_to_log ("Waiting for socket from %s...", build_string (name
));
4692 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4697 wait_while_connecting (Lisp_Object process
)
4699 while (EQ (XPROCESS (process
)->status
, Qconnect
))
4701 add_to_log ("Waiting for connection...");
4702 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4707 wait_for_tls_negotiation (Lisp_Object process
)
4710 while (XPROCESS (process
)->gnutls_p
4711 && XPROCESS (process
)->gnutls_initstage
!= GNUTLS_STAGE_READY
)
4713 add_to_log ("Waiting for TLS...");
4714 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4719 /* This variable is different from waiting_for_input in keyboard.c.
4720 It is used to communicate to a lisp process-filter/sentinel (via the
4721 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4722 for user-input when that process-filter was called.
4723 waiting_for_input cannot be used as that is by definition 0 when
4724 lisp code is being evalled.
4725 This is also used in record_asynch_buffer_change.
4726 For that purpose, this must be 0
4727 when not inside wait_reading_process_output. */
4728 static int waiting_for_user_input_p
;
4731 wait_reading_process_output_unwind (int data
)
4733 waiting_for_user_input_p
= data
;
4736 /* This is here so breakpoints can be put on it. */
4738 wait_reading_process_output_1 (void)
4742 /* Read and dispose of subprocess output while waiting for timeout to
4743 elapse and/or keyboard input to be available.
4747 If negative, gobble data immediately available but don't wait for any.
4750 an additional duration to wait, measured in nanoseconds
4751 If TIME_LIMIT is zero, then:
4752 If NSECS == 0, there is no limit.
4753 If NSECS > 0, the timeout consists of NSECS only.
4754 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4757 0 to ignore keyboard input, or
4758 1 to return when input is available, or
4759 -1 meaning caller will actually read the input, so don't throw to
4760 the quit handler, or
4762 DO_DISPLAY means redisplay should be done to show subprocess
4763 output that arrives.
4765 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4766 (and gobble terminal input into the buffer if any arrives).
4768 If WAIT_PROC is specified, wait until something arrives from that
4771 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4772 (suspending output from other processes). A negative value
4773 means don't run any timers either.
4775 Return positive if we received input from WAIT_PROC (or from any
4776 process if WAIT_PROC is null), zero if we attempted to receive
4777 input but got none, and negative if we didn't even try. */
4780 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4782 Lisp_Object wait_for_cell
,
4783 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4793 struct timespec timeout
, end_time
, timer_delay
;
4794 struct timespec got_output_end_time
= invalid_timespec ();
4795 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
4796 int got_some_output
= -1;
4797 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4798 bool retry_for_async
;
4800 ptrdiff_t count
= SPECPDL_INDEX ();
4802 /* Close to the current time if known, an invalid timespec otherwise. */
4803 struct timespec now
= invalid_timespec ();
4805 FD_ZERO (&Available
);
4808 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4809 && !(CONSP (wait_proc
->status
)
4810 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4811 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4813 record_unwind_protect_int (wait_reading_process_output_unwind
,
4814 waiting_for_user_input_p
);
4815 waiting_for_user_input_p
= read_kbd
;
4817 if (TYPE_MAXIMUM (time_t) < time_limit
)
4818 time_limit
= TYPE_MAXIMUM (time_t);
4820 if (time_limit
< 0 || nsecs
< 0)
4822 else if (time_limit
> 0 || nsecs
> 0)
4825 now
= current_timespec ();
4826 end_time
= timespec_add (now
, make_timespec (time_limit
, nsecs
));
4833 bool process_skipped
= false;
4835 /* If calling from keyboard input, do not quit
4836 since we want to return C-g as an input character.
4837 Otherwise, do pending quit if requested. */
4840 else if (pending_signals
)
4841 process_pending_signals ();
4843 /* Exit now if the cell we're waiting for became non-nil. */
4844 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4847 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4849 Lisp_Object process_list_head
, aproc
;
4850 struct Lisp_Process
*p
;
4852 retry_for_async
= false;
4853 FOR_EACH_PROCESS(process_list_head
, aproc
)
4855 p
= XPROCESS (aproc
);
4857 if (! wait_proc
|| p
== wait_proc
)
4859 #ifdef HAVE_GETADDRINFO_A
4860 /* Check for pending DNS requests. */
4863 Lisp_Object ip_addresses
= check_for_dns (aproc
);
4864 if (!NILP (ip_addresses
) && !EQ (ip_addresses
, Qt
))
4865 connect_network_socket (aproc
, ip_addresses
, Qnil
);
4867 retry_for_async
= true;
4871 /* Continue TLS negotiation. */
4872 if (p
->gnutls_initstage
== GNUTLS_STAGE_HANDSHAKE_TRIED
4873 && p
->is_non_blocking_client
)
4875 gnutls_try_handshake (p
);
4876 p
->gnutls_handshakes_tried
++;
4878 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
4880 gnutls_verify_boot (aproc
, Qnil
);
4881 finish_after_tls_connection (aproc
);
4885 retry_for_async
= true;
4886 if (p
->gnutls_handshakes_tried
4887 > GNUTLS_EMACS_HANDSHAKES_LIMIT
)
4889 deactivate_process (aproc
);
4890 pset_status (p
, list2 (Qfailed
,
4891 build_string ("TLS negotiation failed")));
4899 #endif /* GETADDRINFO_A or GNUTLS */
4901 /* Compute time from now till when time limit is up. */
4902 /* Exit if already run out. */
4903 if (wait
== TIMEOUT
)
4905 if (!timespec_valid_p (now
))
4906 now
= current_timespec ();
4907 if (timespec_cmp (end_time
, now
) <= 0)
4909 timeout
= timespec_sub (end_time
, now
);
4912 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
4914 /* Normally we run timers here.
4915 But not if wait_for_cell; in those cases,
4916 the wait is supposed to be short,
4917 and those callers cannot handle running arbitrary Lisp code here. */
4918 if (NILP (wait_for_cell
)
4919 && just_wait_proc
>= 0)
4923 unsigned old_timers_run
= timers_run
;
4924 struct buffer
*old_buffer
= current_buffer
;
4925 Lisp_Object old_window
= selected_window
;
4927 timer_delay
= timer_check ();
4929 /* If a timer has run, this might have changed buffers
4930 an alike. Make read_key_sequence aware of that. */
4931 if (timers_run
!= old_timers_run
4932 && (old_buffer
!= current_buffer
4933 || !EQ (old_window
, selected_window
))
4934 && waiting_for_user_input_p
== -1)
4935 record_asynch_buffer_change ();
4937 if (timers_run
!= old_timers_run
&& do_display
)
4938 /* We must retry, since a timer may have requeued itself
4939 and that could alter the time_delay. */
4940 redisplay_preserve_echo_area (9);
4944 while (!detect_input_pending ());
4946 /* If there is unread keyboard input, also return. */
4948 && requeued_events_pending_p ())
4951 /* This is so a breakpoint can be put here. */
4952 if (!timespec_valid_p (timer_delay
))
4953 wait_reading_process_output_1 ();
4956 /* Cause C-g and alarm signals to take immediate action,
4957 and cause input available signals to zero out timeout.
4959 It is important that we do this before checking for process
4960 activity. If we get a SIGCHLD after the explicit checks for
4961 process activity, timeout is the only way we will know. */
4963 set_waiting_for_input (&timeout
);
4965 /* If status of something has changed, and no input is
4966 available, notify the user of the change right away. After
4967 this explicit check, we'll let the SIGCHLD handler zap
4968 timeout to get our attention. */
4969 if (update_tick
!= process_tick
)
4974 if (kbd_on_hold_p ())
4977 Atemp
= input_wait_mask
;
4980 timeout
= make_timespec (0, 0);
4981 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4983 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4984 NULL
, &timeout
, NULL
)
4987 /* It's okay for us to do this and then continue with
4988 the loop, since timeout has already been zeroed out. */
4989 clear_waiting_for_input ();
4990 got_some_output
= status_notify (NULL
, wait_proc
);
4991 if (do_display
) redisplay_preserve_echo_area (13);
4995 /* Don't wait for output from a non-running process. Just
4996 read whatever data has already been received. */
4997 if (wait_proc
&& wait_proc
->raw_status_new
)
4998 update_status (wait_proc
);
5000 && ! EQ (wait_proc
->status
, Qrun
)
5001 && ! EQ (wait_proc
->status
, Qconnect
))
5003 bool read_some_bytes
= false;
5005 clear_waiting_for_input ();
5007 /* If data can be read from the process, do so until exhausted. */
5008 if (wait_proc
->infd
>= 0)
5010 XSETPROCESS (proc
, wait_proc
);
5014 int nread
= read_process_output (proc
, wait_proc
->infd
);
5017 if (errno
== EIO
|| errno
== EAGAIN
)
5020 if (errno
== EWOULDBLOCK
)
5026 if (got_some_output
< nread
)
5027 got_some_output
= nread
;
5030 read_some_bytes
= true;
5035 if (read_some_bytes
&& do_display
)
5036 redisplay_preserve_echo_area (10);
5041 /* Wait till there is something to do. */
5043 if (wait_proc
&& just_wait_proc
)
5045 if (wait_proc
->infd
< 0) /* Terminated. */
5047 FD_SET (wait_proc
->infd
, &Available
);
5051 else if (!NILP (wait_for_cell
))
5053 Available
= non_process_wait_mask
;
5060 Available
= non_keyboard_wait_mask
;
5062 Available
= input_wait_mask
;
5063 Writeok
= write_mask
;
5064 check_delay
= wait_proc
? 0 : process_output_delay_count
;
5068 /* If frame size has changed or the window is newly mapped,
5069 redisplay now, before we start to wait. There is a race
5070 condition here; if a SIGIO arrives between now and the select
5071 and indicates that a frame is trashed, the select may block
5072 displaying a trashed screen. */
5073 if (frame_garbaged
&& do_display
)
5075 clear_waiting_for_input ();
5076 redisplay_preserve_echo_area (11);
5078 set_waiting_for_input (&timeout
);
5081 /* Skip the `select' call if input is available and we're
5082 waiting for keyboard input or a cell change (which can be
5083 triggered by processing X events). In the latter case, set
5084 nfds to 1 to avoid breaking the loop. */
5086 if ((read_kbd
|| !NILP (wait_for_cell
))
5087 && detect_input_pending ())
5089 nfds
= read_kbd
? 0 : 1;
5091 FD_ZERO (&Available
);
5095 /* Set the timeout for adaptive read buffering if any
5096 process has non-zero read_output_skip and non-zero
5097 read_output_delay, and we are not reading output for a
5098 specific process. It is not executed if
5099 Vprocess_adaptive_read_buffering is nil. */
5100 if (process_output_skip
&& check_delay
> 0)
5102 int adaptive_nsecs
= timeout
.tv_nsec
;
5103 if (timeout
.tv_sec
> 0 || adaptive_nsecs
> READ_OUTPUT_DELAY_MAX
)
5104 adaptive_nsecs
= READ_OUTPUT_DELAY_MAX
;
5105 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
5107 proc
= chan_process
[channel
];
5110 /* Find minimum non-zero read_output_delay among the
5111 processes with non-zero read_output_skip. */
5112 if (XPROCESS (proc
)->read_output_delay
> 0)
5115 if (!XPROCESS (proc
)->read_output_skip
)
5117 FD_CLR (channel
, &Available
);
5118 process_skipped
= true;
5119 XPROCESS (proc
)->read_output_skip
= 0;
5120 if (XPROCESS (proc
)->read_output_delay
< adaptive_nsecs
)
5121 adaptive_nsecs
= XPROCESS (proc
)->read_output_delay
;
5124 timeout
= make_timespec (0, adaptive_nsecs
);
5125 process_output_skip
= 0;
5128 /* If we've got some output and haven't limited our timeout
5129 with adaptive read buffering, limit it. */
5130 if (got_some_output
> 0 && !process_skipped
5132 || timeout
.tv_nsec
> READ_OUTPUT_DELAY_INCREMENT
))
5133 timeout
= make_timespec (0, READ_OUTPUT_DELAY_INCREMENT
);
5136 if (NILP (wait_for_cell
) && just_wait_proc
>= 0
5137 && timespec_valid_p (timer_delay
)
5138 && timespec_cmp (timer_delay
, timeout
) < 0)
5140 if (!timespec_valid_p (now
))
5141 now
= current_timespec ();
5142 struct timespec timeout_abs
= timespec_add (now
, timeout
);
5143 if (!timespec_valid_p (got_output_end_time
)
5144 || timespec_cmp (timeout_abs
, got_output_end_time
) < 0)
5145 got_output_end_time
= timeout_abs
;
5146 timeout
= timer_delay
;
5149 got_output_end_time
= invalid_timespec ();
5151 /* NOW can become inaccurate if time can pass during pselect. */
5152 if (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0)
5153 now
= invalid_timespec ();
5155 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
5157 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> ASYNC_RETRY_NSEC
))
5160 timeout
.tv_nsec
= ASYNC_RETRY_NSEC
;
5164 #if defined (HAVE_NS)
5166 #elif defined (HAVE_GLIB)
5171 (max (max_process_desc
, max_input_desc
) + 1,
5173 (check_write
? &Writeok
: 0),
5174 NULL
, &timeout
, NULL
);
5177 /* GnuTLS buffers data internally. In lowat mode it leaves
5178 some data in the TCP buffers so that select works, but
5179 with custom pull/push functions we need to check if some
5180 data is available in the buffers manually. */
5183 fd_set tls_available
;
5186 FD_ZERO (&tls_available
);
5189 /* We're not waiting on a specific process, so loop
5190 through all the channels and check for data.
5191 This is a workaround needed for some versions of
5192 the gnutls library -- 2.12.14 has been confirmed
5194 http://comments.gmane.org/gmane.emacs.devel/145074 */
5195 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
5196 if (! NILP (chan_process
[channel
]))
5198 struct Lisp_Process
*p
=
5199 XPROCESS (chan_process
[channel
]);
5200 if (p
&& p
->gnutls_p
&& p
->gnutls_state
5201 && ((emacs_gnutls_record_check_pending
5206 eassert (p
->infd
== channel
);
5207 FD_SET (p
->infd
, &tls_available
);
5214 /* Check this specific channel. */
5215 if (wait_proc
->gnutls_p
/* Check for valid process. */
5216 && wait_proc
->gnutls_state
5217 /* Do we have pending data? */
5218 && ((emacs_gnutls_record_check_pending
5219 (wait_proc
->gnutls_state
))
5223 eassert (0 <= wait_proc
->infd
);
5224 /* Set to Available. */
5225 FD_SET (wait_proc
->infd
, &tls_available
);
5230 Available
= tls_available
;
5237 /* Make C-g and alarm signals set flags again. */
5238 clear_waiting_for_input ();
5240 /* If we woke up due to SIGWINCH, actually change size now. */
5241 do_pending_window_change (0);
5245 /* Exit the main loop if we've passed the requested timeout,
5246 or aren't skipping processes and got some output and
5247 haven't lowered our timeout due to timers or SIGIO and
5248 have waited a long amount of time due to repeated
5252 struct timespec cmp_time
5255 : (!process_skipped
&& got_some_output
> 0
5256 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0))
5257 ? got_output_end_time
5258 : invalid_timespec ());
5259 if (timespec_valid_p (cmp_time
))
5261 now
= current_timespec ();
5262 if (timespec_cmp (cmp_time
, now
) <= 0)
5269 if (xerrno
== EINTR
)
5271 else if (xerrno
== EBADF
)
5274 report_file_errno ("Failed select", Qnil
, xerrno
);
5277 /* Check for keyboard input. */
5278 /* If there is any, return immediately
5279 to give it higher priority than subprocesses. */
5283 unsigned old_timers_run
= timers_run
;
5284 struct buffer
*old_buffer
= current_buffer
;
5285 Lisp_Object old_window
= selected_window
;
5288 if (detect_input_pending_run_timers (do_display
))
5290 swallow_events (do_display
);
5291 if (detect_input_pending_run_timers (do_display
))
5295 /* If a timer has run, this might have changed buffers
5296 an alike. Make read_key_sequence aware of that. */
5297 if (timers_run
!= old_timers_run
5298 && waiting_for_user_input_p
== -1
5299 && (old_buffer
!= current_buffer
5300 || !EQ (old_window
, selected_window
)))
5301 record_asynch_buffer_change ();
5307 /* If there is unread keyboard input, also return. */
5309 && requeued_events_pending_p ())
5312 /* If we are not checking for keyboard input now,
5313 do process events (but don't run any timers).
5314 This is so that X events will be processed.
5315 Otherwise they may have to wait until polling takes place.
5316 That would causes delays in pasting selections, for example.
5318 (We used to do this only if wait_for_cell.) */
5319 if (read_kbd
== 0 && detect_input_pending ())
5321 swallow_events (do_display
);
5322 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5323 if (detect_input_pending ())
5328 /* Exit now if the cell we're waiting for became non-nil. */
5329 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5333 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5334 go read it. This can happen with X on BSD after logging out.
5335 In that case, there really is no input and no SIGIO,
5336 but select says there is input. */
5338 if (read_kbd
&& interrupt_input
5339 && keyboard_bit_set (&Available
) && ! noninteractive
)
5340 handle_input_available_signal (SIGIO
);
5343 /* If checking input just got us a size-change event from X,
5344 obey it now if we should. */
5345 if (read_kbd
|| ! NILP (wait_for_cell
))
5346 do_pending_window_change (0);
5348 /* Check for data from a process. */
5349 if (no_avail
|| nfds
== 0)
5352 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
5354 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
5356 && ((d
->condition
& FOR_READ
5357 && FD_ISSET (channel
, &Available
))
5358 || (d
->condition
& FOR_WRITE
5359 && FD_ISSET (channel
, &write_mask
))))
5360 d
->func (channel
, d
->data
);
5363 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5365 if (FD_ISSET (channel
, &Available
)
5366 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
5367 && !FD_ISSET (channel
, &non_process_wait_mask
))
5371 /* If waiting for this channel, arrange to return as
5372 soon as no more input to be processed. No more
5374 proc
= chan_process
[channel
];
5378 /* If this is a server stream socket, accept connection. */
5379 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5381 server_accept_connection (proc
, channel
);
5385 /* Read data from the process, starting with our
5386 buffered-ahead character if we have one. */
5388 nread
= read_process_output (proc
, channel
);
5389 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
5390 && got_some_output
< nread
)
5391 got_some_output
= nread
;
5394 /* Vacuum up any leftovers without waiting. */
5395 if (wait_proc
== XPROCESS (proc
))
5397 /* Since read_process_output can run a filter,
5398 which can call accept-process-output,
5399 don't try to read from any other processes
5400 before doing the select again. */
5401 FD_ZERO (&Available
);
5404 redisplay_preserve_echo_area (12);
5407 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5410 else if (nread
== -1 && errno
== EAGAIN
)
5413 /* FIXME: Is this special case still needed? */
5414 /* Note that we cannot distinguish between no input
5415 available now and a closed pipe.
5416 With luck, a closed pipe will be accompanied by
5417 subprocess termination and SIGCHLD. */
5418 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5419 && !PIPECONN_P (proc
))
5423 /* On some OSs with ptys, when the process on one end of
5424 a pty exits, the other end gets an error reading with
5425 errno = EIO instead of getting an EOF (0 bytes read).
5426 Therefore, if we get an error reading and errno =
5427 EIO, just continue, because the child process has
5428 exited and should clean itself up soon (e.g. when we
5430 else if (nread
== -1 && errno
== EIO
)
5432 struct Lisp_Process
*p
= XPROCESS (proc
);
5434 /* Clear the descriptor now, so we only raise the
5436 FD_CLR (channel
, &input_wait_mask
);
5437 FD_CLR (channel
, &non_keyboard_wait_mask
);
5441 /* If the EIO occurs on a pty, the SIGCHLD handler's
5442 waitpid call will not find the process object to
5443 delete. Do it here. */
5444 p
->tick
= ++process_tick
;
5445 pset_status (p
, Qfailed
);
5448 #endif /* HAVE_PTYS */
5449 /* If we can detect process termination, don't consider the
5450 process gone just because its pipe is closed. */
5451 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5452 && !PIPECONN_P (proc
))
5454 else if (nread
== 0 && PIPECONN_P (proc
))
5456 /* Preserve status of processes already terminated. */
5457 XPROCESS (proc
)->tick
= ++process_tick
;
5458 deactivate_process (proc
);
5459 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5460 pset_status (XPROCESS (proc
),
5461 list2 (Qexit
, make_number (0)));
5465 /* Preserve status of processes already terminated. */
5466 XPROCESS (proc
)->tick
= ++process_tick
;
5467 deactivate_process (proc
);
5468 if (XPROCESS (proc
)->raw_status_new
)
5469 update_status (XPROCESS (proc
));
5470 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5471 pset_status (XPROCESS (proc
),
5472 list2 (Qexit
, make_number (256)));
5475 if (FD_ISSET (channel
, &Writeok
)
5476 && FD_ISSET (channel
, &connect_wait_mask
))
5478 struct Lisp_Process
*p
;
5480 FD_CLR (channel
, &connect_wait_mask
);
5481 FD_CLR (channel
, &write_mask
);
5482 if (--num_pending_connects
< 0)
5485 proc
= chan_process
[channel
];
5489 p
= XPROCESS (proc
);
5492 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5493 So only use it on systems where it is known to work. */
5495 socklen_t xlen
= sizeof (xerrno
);
5496 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5501 struct sockaddr pname
;
5502 socklen_t pnamelen
= sizeof (pname
);
5504 /* If connection failed, getpeername will fail. */
5506 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5508 /* Obtain connect failure code through error slippage. */
5511 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5518 p
->tick
= ++process_tick
;
5519 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
5520 deactivate_process (proc
);
5525 /* If we have an incompletely set up TLS connection,
5526 then defer the sentinel signaling until
5528 if (NILP (p
->gnutls_boot_parameters
)
5532 pset_status (p
, Qrun
);
5533 /* Execute the sentinel here. If we had relied on
5534 status_notify to do it later, it will read input
5535 from the process before calling the sentinel. */
5536 exec_sentinel (proc
, build_string ("open\n"));
5539 if (0 <= p
->infd
&& !EQ (p
->filter
, Qt
)
5540 && !EQ (p
->command
, Qt
))
5542 FD_SET (p
->infd
, &input_wait_mask
);
5543 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5547 } /* End for each file descriptor. */
5548 } /* End while exit conditions not met. */
5550 unbind_to (count
, Qnil
);
5552 /* If calling from keyboard input, do not quit
5553 since we want to return C-g as an input character.
5554 Otherwise, do pending quit if requested. */
5557 /* Prevent input_pending from remaining set if we quit. */
5558 clear_input_pending ();
5562 return got_some_output
;
5565 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5568 read_process_output_call (Lisp_Object fun_and_args
)
5570 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5574 read_process_output_error_handler (Lisp_Object error_val
)
5576 cmd_error_internal (error_val
, "error in process filter: ");
5578 update_echo_area ();
5579 Fsleep_for (make_number (2), Qnil
);
5584 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5586 struct coding_system
*coding
);
5588 /* Read pending output from the process channel,
5589 starting with our buffered-ahead character if we have one.
5590 Yield number of decoded characters read.
5592 This function reads at most 4096 characters.
5593 If you want to read all available subprocess output,
5594 you must call it repeatedly until it returns zero.
5596 The characters read are decoded according to PROC's coding-system
5600 read_process_output (Lisp_Object proc
, int channel
)
5603 struct Lisp_Process
*p
= XPROCESS (proc
);
5604 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5605 int carryover
= p
->decoding_carryover
;
5606 enum { readmax
= 4096 };
5607 ptrdiff_t count
= SPECPDL_INDEX ();
5608 Lisp_Object odeactivate
;
5609 char chars
[sizeof coding
->carryover
+ readmax
];
5612 /* See the comment above. */
5613 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5615 #ifdef DATAGRAM_SOCKETS
5616 /* We have a working select, so proc_buffered_char is always -1. */
5617 if (DATAGRAM_CHAN_P (channel
))
5619 socklen_t len
= datagram_address
[channel
].len
;
5620 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5621 0, datagram_address
[channel
].sa
, &len
);
5626 bool buffered
= proc_buffered_char
[channel
] >= 0;
5629 chars
[carryover
] = proc_buffered_char
[channel
];
5630 proc_buffered_char
[channel
] = -1;
5633 if (p
->gnutls_p
&& p
->gnutls_state
)
5634 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5635 readmax
- buffered
);
5638 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5639 readmax
- buffered
);
5640 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5642 int delay
= p
->read_output_delay
;
5645 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5648 process_output_delay_count
++;
5649 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5652 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5654 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5656 process_output_delay_count
--;
5658 p
->read_output_delay
= delay
;
5661 p
->read_output_skip
= 1;
5662 process_output_skip
= 1;
5666 nbytes
+= buffered
&& nbytes
<= 0;
5669 p
->decoding_carryover
= 0;
5671 /* At this point, NBYTES holds number of bytes just received
5672 (including the one in proc_buffered_char[channel]). */
5675 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5677 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5680 /* Now set NBYTES how many bytes we must decode. */
5681 nbytes
+= carryover
;
5683 odeactivate
= Vdeactivate_mark
;
5684 /* There's no good reason to let process filters change the current
5685 buffer, and many callers of accept-process-output, sit-for, and
5686 friends don't expect current-buffer to be changed from under them. */
5687 record_unwind_current_buffer ();
5689 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5691 /* Handling the process output should not deactivate the mark. */
5692 Vdeactivate_mark
= odeactivate
;
5694 unbind_to (count
, Qnil
);
5699 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5701 struct coding_system
*coding
)
5703 Lisp_Object outstream
= p
->filter
;
5705 bool outer_running_asynch_code
= running_asynch_code
;
5706 int waiting
= waiting_for_user_input_p
;
5709 Lisp_Object obuffer
, okeymap
;
5710 XSETBUFFER (obuffer
, current_buffer
);
5711 okeymap
= BVAR (current_buffer
, keymap
);
5714 /* We inhibit quit here instead of just catching it so that
5715 hitting ^G when a filter happens to be running won't screw
5717 specbind (Qinhibit_quit
, Qt
);
5718 specbind (Qlast_nonmenu_event
, Qt
);
5720 /* In case we get recursively called,
5721 and we already saved the match data nonrecursively,
5722 save the same match data in safely recursive fashion. */
5723 if (outer_running_asynch_code
)
5726 /* Don't clobber the CURRENT match data, either! */
5727 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5728 restore_search_regs ();
5729 record_unwind_save_match_data ();
5730 Fset_match_data (tem
, Qt
);
5733 /* For speed, if a search happens within this code,
5734 save the match data in a special nonrecursive fashion. */
5735 running_asynch_code
= 1;
5737 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5738 text
= coding
->dst_object
;
5739 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5740 /* A new coding system might be found. */
5741 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5743 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5745 /* Don't call setup_coding_system for
5746 proc_decode_coding_system[channel] here. It is done in
5747 detect_coding called via decode_coding above. */
5749 /* If a coding system for encoding is not yet decided, we set
5750 it as the same as coding-system for decoding.
5752 But, before doing that we must check if
5753 proc_encode_coding_system[p->outfd] surely points to a
5754 valid memory because p->outfd will be changed once EOF is
5755 sent to the process. */
5756 if (NILP (p
->encode_coding_system
) && p
->outfd
>= 0
5757 && proc_encode_coding_system
[p
->outfd
])
5759 pset_encode_coding_system
5760 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5761 setup_coding_system (p
->encode_coding_system
,
5762 proc_encode_coding_system
[p
->outfd
]);
5766 if (coding
->carryover_bytes
> 0)
5768 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5769 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5770 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5771 coding
->carryover_bytes
);
5772 p
->decoding_carryover
= coding
->carryover_bytes
;
5774 if (SBYTES (text
) > 0)
5775 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5776 sometimes it's simply wrong to wrap (e.g. when called from
5777 accept-process-output). */
5778 internal_condition_case_1 (read_process_output_call
,
5779 list3 (outstream
, make_lisp_proc (p
), text
),
5780 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5781 read_process_output_error_handler
);
5783 /* If we saved the match data nonrecursively, restore it now. */
5784 restore_search_regs ();
5785 running_asynch_code
= outer_running_asynch_code
;
5787 /* Restore waiting_for_user_input_p as it was
5788 when we were called, in case the filter clobbered it. */
5789 waiting_for_user_input_p
= waiting
;
5791 #if 0 /* Call record_asynch_buffer_change unconditionally,
5792 because we might have changed minor modes or other things
5793 that affect key bindings. */
5794 if (! EQ (Fcurrent_buffer (), obuffer
)
5795 || ! EQ (current_buffer
->keymap
, okeymap
))
5797 /* But do it only if the caller is actually going to read events.
5798 Otherwise there's no need to make him wake up, and it could
5799 cause trouble (for example it would make sit_for return). */
5800 if (waiting_for_user_input_p
== -1)
5801 record_asynch_buffer_change ();
5804 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5805 Sinternal_default_process_filter
, 2, 2, 0,
5806 doc
: /* Function used as default process filter.
5807 This inserts the process's output into its buffer, if there is one.
5808 Otherwise it discards the output. */)
5809 (Lisp_Object proc
, Lisp_Object text
)
5811 struct Lisp_Process
*p
;
5814 CHECK_PROCESS (proc
);
5815 p
= XPROCESS (proc
);
5816 CHECK_STRING (text
);
5818 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5820 Lisp_Object old_read_only
;
5821 ptrdiff_t old_begv
, old_zv
;
5822 ptrdiff_t old_begv_byte
, old_zv_byte
;
5823 ptrdiff_t before
, before_byte
;
5824 ptrdiff_t opoint_byte
;
5827 Fset_buffer (p
->buffer
);
5829 opoint_byte
= PT_BYTE
;
5830 old_read_only
= BVAR (current_buffer
, read_only
);
5833 old_begv_byte
= BEGV_BYTE
;
5834 old_zv_byte
= ZV_BYTE
;
5836 bset_read_only (current_buffer
, Qnil
);
5838 /* Insert new output into buffer at the current end-of-output
5839 marker, thus preserving logical ordering of input and output. */
5840 if (XMARKER (p
->mark
)->buffer
)
5841 set_point_from_marker (p
->mark
);
5843 SET_PT_BOTH (ZV
, ZV_BYTE
);
5845 before_byte
= PT_BYTE
;
5847 /* If the output marker is outside of the visible region, save
5848 the restriction and widen. */
5849 if (! (BEGV
<= PT
&& PT
<= ZV
))
5852 /* Adjust the multibyteness of TEXT to that of the buffer. */
5853 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5854 != ! STRING_MULTIBYTE (text
))
5855 text
= (STRING_MULTIBYTE (text
)
5856 ? Fstring_as_unibyte (text
)
5857 : Fstring_to_multibyte (text
));
5858 /* Insert before markers in case we are inserting where
5859 the buffer's mark is, and the user's next command is Meta-y. */
5860 insert_from_string_before_markers (text
, 0, 0,
5861 SCHARS (text
), SBYTES (text
), 0);
5863 /* Make sure the process marker's position is valid when the
5864 process buffer is changed in the signal_after_change above.
5865 W3 is known to do that. */
5866 if (BUFFERP (p
->buffer
)
5867 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5868 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5870 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5872 update_mode_lines
= 23;
5874 /* Make sure opoint and the old restrictions
5875 float ahead of any new text just as point would. */
5876 if (opoint
>= before
)
5878 opoint
+= PT
- before
;
5879 opoint_byte
+= PT_BYTE
- before_byte
;
5881 if (old_begv
> before
)
5883 old_begv
+= PT
- before
;
5884 old_begv_byte
+= PT_BYTE
- before_byte
;
5886 if (old_zv
>= before
)
5888 old_zv
+= PT
- before
;
5889 old_zv_byte
+= PT_BYTE
- before_byte
;
5892 /* If the restriction isn't what it should be, set it. */
5893 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5894 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5896 bset_read_only (current_buffer
, old_read_only
);
5897 SET_PT_BOTH (opoint
, opoint_byte
);
5902 /* Sending data to subprocess. */
5904 /* In send_process, when a write fails temporarily,
5905 wait_reading_process_output is called. It may execute user code,
5906 e.g. timers, that attempts to write new data to the same process.
5907 We must ensure that data is sent in the right order, and not
5908 interspersed half-completed with other writes (Bug#10815). This is
5909 handled by the write_queue element of struct process. It is a list
5910 with each entry having the form
5912 (string . (offset . length))
5914 where STRING is a lisp string, OFFSET is the offset into the
5915 string's byte sequence from which we should begin to send, and
5916 LENGTH is the number of bytes left to send. */
5918 /* Create a new entry in write_queue.
5919 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5920 BUF is a pointer to the string sequence of the input_obj or a C
5921 string in case of Qt or Qnil. */
5924 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5925 const char *buf
, ptrdiff_t len
, bool front
)
5928 Lisp_Object entry
, obj
;
5930 if (STRINGP (input_obj
))
5932 offset
= buf
- SSDATA (input_obj
);
5938 obj
= make_unibyte_string (buf
, len
);
5941 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5944 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5946 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5949 /* Remove the first element in the write_queue of process P, put its
5950 contents in OBJ, BUF and LEN, and return true. If the
5951 write_queue is empty, return false. */
5954 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5955 const char **buf
, ptrdiff_t *len
)
5957 Lisp_Object entry
, offset_length
;
5960 if (NILP (p
->write_queue
))
5963 entry
= XCAR (p
->write_queue
);
5964 pset_write_queue (p
, XCDR (p
->write_queue
));
5966 *obj
= XCAR (entry
);
5967 offset_length
= XCDR (entry
);
5969 *len
= XINT (XCDR (offset_length
));
5970 offset
= XINT (XCAR (offset_length
));
5971 *buf
= SSDATA (*obj
) + offset
;
5976 /* Send some data to process PROC.
5977 BUF is the beginning of the data; LEN is the number of characters.
5978 OBJECT is the Lisp object that the data comes from. If OBJECT is
5979 nil or t, it means that the data comes from C string.
5981 If OBJECT is not nil, the data is encoded by PROC's coding-system
5982 for encoding before it is sent.
5984 This function can evaluate Lisp code and can garbage collect. */
5987 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5990 struct Lisp_Process
*p
= XPROCESS (proc
);
5992 struct coding_system
*coding
;
5994 if (NETCONN_P (proc
))
5996 wait_while_connecting (proc
);
5997 wait_for_tls_negotiation (proc
);
6000 if (p
->raw_status_new
)
6002 if (! EQ (p
->status
, Qrun
))
6003 error ("Process %s not running", SDATA (p
->name
));
6005 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
6007 coding
= proc_encode_coding_system
[p
->outfd
];
6008 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
6010 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
6011 || (BUFFERP (object
)
6012 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
6015 pset_encode_coding_system
6016 (p
, complement_process_encoding_system (p
->encode_coding_system
));
6017 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
6019 /* The coding system for encoding was changed to raw-text
6020 because we sent a unibyte text previously. Now we are
6021 sending a multibyte text, thus we must encode it by the
6022 original coding system specified for the current process.
6024 Another reason we come here is that the coding system
6025 was just complemented and a new one was returned by
6026 complement_process_encoding_system. */
6027 setup_coding_system (p
->encode_coding_system
, coding
);
6028 Vlast_coding_system_used
= p
->encode_coding_system
;
6030 coding
->src_multibyte
= 1;
6034 coding
->src_multibyte
= 0;
6035 /* For sending a unibyte text, character code conversion should
6036 not take place but EOL conversion should. So, setup raw-text
6037 or one of the subsidiary if we have not yet done it. */
6038 if (CODING_REQUIRE_ENCODING (coding
))
6040 if (CODING_REQUIRE_FLUSHING (coding
))
6042 /* But, before changing the coding, we must flush out data. */
6043 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6044 send_process (proc
, "", 0, Qt
);
6045 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
6047 setup_coding_system (raw_text_coding_system
6048 (Vlast_coding_system_used
),
6050 coding
->src_multibyte
= 0;
6053 coding
->dst_multibyte
= 0;
6055 if (CODING_REQUIRE_ENCODING (coding
))
6057 coding
->dst_object
= Qt
;
6058 if (BUFFERP (object
))
6060 ptrdiff_t from_byte
, from
, to
;
6061 ptrdiff_t save_pt
, save_pt_byte
;
6062 struct buffer
*cur
= current_buffer
;
6064 set_buffer_internal (XBUFFER (object
));
6065 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
6067 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
6068 from
= BYTE_TO_CHAR (from_byte
);
6069 to
= BYTE_TO_CHAR (from_byte
+ len
);
6070 TEMP_SET_PT_BOTH (from
, from_byte
);
6071 encode_coding_object (coding
, object
, from
, from_byte
,
6072 to
, from_byte
+ len
, Qt
);
6073 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
6074 set_buffer_internal (cur
);
6076 else if (STRINGP (object
))
6078 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
6079 SBYTES (object
), Qt
);
6083 coding
->dst_object
= make_unibyte_string (buf
, len
);
6084 coding
->produced
= len
;
6087 len
= coding
->produced
;
6088 object
= coding
->dst_object
;
6089 buf
= SSDATA (object
);
6092 /* If there is already data in the write_queue, put the new data
6093 in the back of queue. Otherwise, ignore it. */
6094 if (!NILP (p
->write_queue
))
6095 write_queue_push (p
, object
, buf
, len
, 0);
6097 do /* while !NILP (p->write_queue) */
6099 ptrdiff_t cur_len
= -1;
6100 const char *cur_buf
;
6101 Lisp_Object cur_object
;
6103 /* If write_queue is empty, ignore it. */
6104 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
6108 cur_object
= object
;
6113 /* Send this batch, using one or more write calls. */
6114 ptrdiff_t written
= 0;
6115 int outfd
= p
->outfd
;
6116 #ifdef DATAGRAM_SOCKETS
6117 if (DATAGRAM_CHAN_P (outfd
))
6119 rv
= sendto (outfd
, cur_buf
, cur_len
,
6120 0, datagram_address
[outfd
].sa
,
6121 datagram_address
[outfd
].len
);
6124 else if (errno
== EMSGSIZE
)
6125 report_file_error ("Sending datagram", proc
);
6131 if (p
->gnutls_p
&& p
->gnutls_state
)
6132 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
6135 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
6136 rv
= (written
? 0 : -1);
6137 if (p
->read_output_delay
> 0
6138 && p
->adaptive_read_buffering
== 1)
6140 p
->read_output_delay
= 0;
6141 process_output_delay_count
--;
6142 p
->read_output_skip
= 0;
6150 || errno
== EWOULDBLOCK
6153 /* Buffer is full. Wait, accepting input;
6154 that may allow the program
6155 to finish doing output and read more. */
6157 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
6158 /* A gross hack to work around a bug in FreeBSD.
6159 In the following sequence, read(2) returns
6163 write(2) 954 bytes, get EAGAIN
6164 read(2) 1024 bytes in process_read_output
6165 read(2) 11 bytes in process_read_output
6167 That is, read(2) returns more bytes than have
6168 ever been written successfully. The 1033 bytes
6169 read are the 1022 bytes written successfully
6170 after processing (for example with CRs added if
6171 the terminal is set up that way which it is
6172 here). The same bytes will be seen again in a
6173 later read(2), without the CRs. */
6175 if (errno
== EAGAIN
)
6178 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
6180 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
6182 /* Put what we should have written in wait_queue. */
6183 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
6184 wait_reading_process_output (0, 20 * 1000 * 1000,
6185 0, 0, Qnil
, NULL
, 0);
6186 /* Reread queue, to see what is left. */
6189 else if (errno
== EPIPE
)
6191 p
->raw_status_new
= 0;
6192 pset_status (p
, list2 (Qexit
, make_number (256)));
6193 p
->tick
= ++process_tick
;
6194 deactivate_process (proc
);
6195 error ("process %s no longer connected to pipe; closed it",
6199 /* This is a real error. */
6200 report_file_error ("Writing to process", proc
);
6206 while (!NILP (p
->write_queue
));
6209 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
6211 doc
: /* Send current contents of region as input to PROCESS.
6212 PROCESS may be a process, a buffer, the name of a process or buffer, or
6213 nil, indicating the current buffer's process.
6214 Called from program, takes three arguments, PROCESS, START and END.
6215 If the region is more than 500 characters long,
6216 it is sent in several bunches. This may happen even for shorter regions.
6217 Output from processes can arrive in between bunches.
6219 If PROCESS is a non-blocking network process that hasn't been fully
6220 set up yet, this function will block until socket setup has completed. */)
6221 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
6223 Lisp_Object proc
= get_process (process
);
6224 ptrdiff_t start_byte
, end_byte
;
6226 validate_region (&start
, &end
);
6228 start_byte
= CHAR_TO_BYTE (XINT (start
));
6229 end_byte
= CHAR_TO_BYTE (XINT (end
));
6231 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
6232 move_gap_both (XINT (start
), start_byte
);
6234 if (NETCONN_P (proc
))
6235 wait_while_connecting (proc
);
6237 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
6238 end_byte
- start_byte
, Fcurrent_buffer ());
6243 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
6245 doc
: /* Send PROCESS the contents of STRING as input.
6246 PROCESS may be a process, a buffer, the name of a process or buffer, or
6247 nil, indicating the current buffer's process.
6248 If STRING is more than 500 characters long,
6249 it is sent in several bunches. This may happen even for shorter strings.
6250 Output from processes can arrive in between bunches.
6252 If PROCESS is a non-blocking network process that hasn't been fully
6253 set up yet, this function will block until socket setup has completed. */)
6254 (Lisp_Object process
, Lisp_Object string
)
6256 CHECK_STRING (string
);
6257 Lisp_Object proc
= get_process (process
);
6258 send_process (proc
, SSDATA (string
),
6259 SBYTES (string
), string
);
6263 /* Return the foreground process group for the tty/pty that
6264 the process P uses. */
6266 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
6271 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
6274 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
6275 master side. Try the slave side. */
6276 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
6280 ioctl (fd
, TIOCGPGRP
, &gid
);
6284 #endif /* defined (TIOCGPGRP ) */
6289 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6290 Sprocess_running_child_p
, 0, 1, 0,
6291 doc
: /* Return non-nil if PROCESS has given the terminal to a
6292 child. If the operating system does not make it possible to find out,
6293 return t. If we can find out, return the numeric ID of the foreground
6295 (Lisp_Object process
)
6297 /* Initialize in case ioctl doesn't exist or gives an error,
6298 in a way that will cause returning t. */
6299 Lisp_Object proc
= get_process (process
);
6300 struct Lisp_Process
*p
= XPROCESS (proc
);
6302 if (!EQ (p
->type
, Qreal
))
6303 error ("Process %s is not a subprocess",
6306 error ("Process %s is not active",
6309 pid_t gid
= emacs_get_tty_pgrp (p
);
6314 return make_number (gid
);
6318 /* Send a signal number SIGNO to PROCESS.
6319 If CURRENT_GROUP is t, that means send to the process group
6320 that currently owns the terminal being used to communicate with PROCESS.
6321 This is used for various commands in shell mode.
6322 If CURRENT_GROUP is lambda, that means send to the process group
6323 that currently owns the terminal, but only if it is NOT the shell itself.
6325 If NOMSG is false, insert signal-announcements into process's buffers
6328 If we can, we try to signal PROCESS by sending control characters
6329 down the pty. This allows us to signal inferiors who have changed
6330 their uid, for which kill would return an EPERM error. */
6333 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
6337 struct Lisp_Process
*p
;
6341 proc
= get_process (process
);
6342 p
= XPROCESS (proc
);
6344 if (!EQ (p
->type
, Qreal
))
6345 error ("Process %s is not a subprocess",
6348 error ("Process %s is not active",
6352 current_group
= Qnil
;
6354 /* If we are using pgrps, get a pgrp number and make it negative. */
6355 if (NILP (current_group
))
6356 /* Send the signal to the shell's process group. */
6360 #ifdef SIGNALS_VIA_CHARACTERS
6361 /* If possible, send signals to the entire pgrp
6362 by sending an input character to it. */
6365 cc_t
*sig_char
= NULL
;
6367 tcgetattr (p
->infd
, &t
);
6372 sig_char
= &t
.c_cc
[VINTR
];
6376 sig_char
= &t
.c_cc
[VQUIT
];
6381 sig_char
= &t
.c_cc
[VSWTCH
];
6383 sig_char
= &t
.c_cc
[VSUSP
];
6388 if (sig_char
&& *sig_char
!= CDISABLE
)
6390 send_process (proc
, (char *) sig_char
, 1, Qnil
);
6393 /* If we can't send the signal with a character,
6394 fall through and send it another way. */
6396 /* The code above may fall through if it can't
6397 handle the signal. */
6398 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6401 /* Get the current pgrp using the tty itself, if we have that.
6402 Otherwise, use the pty to get the pgrp.
6403 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6404 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6405 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6406 His patch indicates that if TIOCGPGRP returns an error, then
6407 we should just assume that p->pid is also the process group id. */
6409 gid
= emacs_get_tty_pgrp (p
);
6412 /* If we can't get the information, assume
6413 the shell owns the tty. */
6416 /* It is not clear whether anything really can set GID to -1.
6417 Perhaps on some system one of those ioctls can or could do so.
6418 Or perhaps this is vestigial. */
6421 #else /* ! defined (TIOCGPGRP) */
6422 /* Can't select pgrps on this system, so we know that
6423 the child itself heads the pgrp. */
6425 #endif /* ! defined (TIOCGPGRP) */
6427 /* If current_group is lambda, and the shell owns the terminal,
6428 don't send any signal. */
6429 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6434 if (signo
== SIGCONT
)
6436 p
->raw_status_new
= 0;
6437 pset_status (p
, Qrun
);
6438 p
->tick
= ++process_tick
;
6441 status_notify (NULL
, NULL
);
6442 redisplay_preserve_echo_area (13);
6448 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
6449 We don't know whether the bug is fixed in later HP-UX versions. */
6450 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
6454 /* If we don't have process groups, send the signal to the immediate
6455 subprocess. That isn't really right, but it's better than any
6456 obvious alternative. */
6457 pid_t pid
= no_pgrp
? gid
: - gid
;
6459 /* Do not kill an already-reaped process, as that could kill an
6460 innocent bystander that happens to have the same process ID. */
6462 block_child_signal (&oldset
);
6465 unblock_child_signal (&oldset
);
6468 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6469 doc
: /* Interrupt process PROCESS.
6470 PROCESS may be a process, a buffer, or the name of a process or buffer.
6471 No arg or nil means current buffer's process.
6472 Second arg CURRENT-GROUP non-nil means send signal to
6473 the current process-group of the process's controlling terminal
6474 rather than to the process's own process group.
6475 If the process is a shell, this means interrupt current subjob
6476 rather than the shell.
6478 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6479 don't send the signal. */)
6480 (Lisp_Object process
, Lisp_Object current_group
)
6482 process_send_signal (process
, SIGINT
, current_group
, 0);
6486 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6487 doc
: /* Kill process PROCESS. May be process or name of one.
6488 See function `interrupt-process' for more details on usage. */)
6489 (Lisp_Object process
, Lisp_Object current_group
)
6491 process_send_signal (process
, SIGKILL
, current_group
, 0);
6495 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6496 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6497 See function `interrupt-process' for more details on usage. */)
6498 (Lisp_Object process
, Lisp_Object current_group
)
6500 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6504 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6505 doc
: /* Stop process PROCESS. May be process or name of one.
6506 See function `interrupt-process' for more details on usage.
6507 If PROCESS is a network or serial process, inhibit handling of incoming
6509 (Lisp_Object process
, Lisp_Object current_group
)
6511 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6512 || PIPECONN_P (process
)))
6514 struct Lisp_Process
*p
;
6516 p
= XPROCESS (process
);
6517 if (NILP (p
->command
)
6520 FD_CLR (p
->infd
, &input_wait_mask
);
6521 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6523 pset_command (p
, Qt
);
6527 error ("No SIGTSTP support");
6529 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6534 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6535 doc
: /* Continue process PROCESS. May be process or name of one.
6536 See function `interrupt-process' for more details on usage.
6537 If PROCESS is a network or serial process, resume handling of incoming
6539 (Lisp_Object process
, Lisp_Object current_group
)
6541 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6542 || PIPECONN_P (process
)))
6544 struct Lisp_Process
*p
;
6546 p
= XPROCESS (process
);
6547 if (EQ (p
->command
, Qt
)
6549 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6551 FD_SET (p
->infd
, &input_wait_mask
);
6552 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6554 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6555 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6556 #else /* not WINDOWSNT */
6557 tcflush (p
->infd
, TCIFLUSH
);
6558 #endif /* not WINDOWSNT */
6560 pset_command (p
, Qnil
);
6564 process_send_signal (process
, SIGCONT
, current_group
, 0);
6566 error ("No SIGCONT support");
6571 /* Return the integer value of the signal whose abbreviation is ABBR,
6572 or a negative number if there is no such signal. */
6574 abbr_to_signal (char const *name
)
6577 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
6579 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6582 for (i
= 0; i
< sizeof sigbuf
; i
++)
6584 sigbuf
[i
] = c_toupper (name
[i
]);
6586 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
6592 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6593 2, 2, "sProcess (name or number): \nnSignal code: ",
6594 doc
: /* Send PROCESS the signal with code SIGCODE.
6595 PROCESS may also be a number specifying the process id of the
6596 process to signal; in this case, the process need not be a child of
6598 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6599 (Lisp_Object process
, Lisp_Object sigcode
)
6604 if (STRINGP (process
))
6606 Lisp_Object tem
= Fget_process (process
);
6609 Lisp_Object process_number
6610 = string_to_number (SSDATA (process
), 10, 1);
6611 if (NUMBERP (process_number
))
6612 tem
= process_number
;
6616 else if (!NUMBERP (process
))
6617 process
= get_process (process
);
6622 if (NUMBERP (process
))
6623 CONS_TO_INTEGER (process
, pid_t
, pid
);
6626 CHECK_PROCESS (process
);
6627 pid
= XPROCESS (process
)->pid
;
6629 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6632 if (INTEGERP (sigcode
))
6634 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6635 signo
= XINT (sigcode
);
6641 CHECK_SYMBOL (sigcode
);
6642 name
= SSDATA (SYMBOL_NAME (sigcode
));
6644 signo
= abbr_to_signal (name
);
6646 error ("Undefined signal name %s", name
);
6649 return make_number (kill (pid
, signo
));
6652 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6653 doc
: /* Make PROCESS see end-of-file in its input.
6654 EOF comes after any text already sent to it.
6655 PROCESS may be a process, a buffer, the name of a process or buffer, or
6656 nil, indicating the current buffer's process.
6657 If PROCESS is a network connection, or is a process communicating
6658 through a pipe (as opposed to a pty), then you cannot send any more
6659 text to PROCESS after you call this function.
6660 If PROCESS is a serial process, wait until all output written to the
6661 process has been transmitted to the serial port. */)
6662 (Lisp_Object process
)
6665 struct coding_system
*coding
= NULL
;
6668 proc
= get_process (process
);
6670 if (NETCONN_P (proc
))
6671 wait_while_connecting (proc
);
6673 if (DATAGRAM_CONN_P (proc
))
6677 outfd
= XPROCESS (proc
)->outfd
;
6679 coding
= proc_encode_coding_system
[outfd
];
6681 /* Make sure the process is really alive. */
6682 if (XPROCESS (proc
)->raw_status_new
)
6683 update_status (XPROCESS (proc
));
6684 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6685 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6687 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6689 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6690 send_process (proc
, "", 0, Qnil
);
6693 if (XPROCESS (proc
)->pty_flag
)
6694 send_process (proc
, "\004", 1, Qnil
);
6695 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6698 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6699 report_file_error ("Failed tcdrain", Qnil
);
6700 #endif /* not WINDOWSNT */
6701 /* Do nothing on Windows because writes are blocking. */
6705 struct Lisp_Process
*p
= XPROCESS (proc
);
6706 int old_outfd
= p
->outfd
;
6709 #ifdef HAVE_SHUTDOWN
6710 /* If this is a network connection, or socketpair is used
6711 for communication with the subprocess, call shutdown to cause EOF.
6712 (In some old system, shutdown to socketpair doesn't work.
6713 Then we just can't win.) */
6715 && (EQ (p
->type
, Qnetwork
) || p
->infd
== old_outfd
))
6716 shutdown (old_outfd
, 1);
6718 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6719 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6721 report_file_error ("Opening null device", Qnil
);
6722 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6723 p
->outfd
= new_outfd
;
6725 if (!proc_encode_coding_system
[new_outfd
])
6726 proc_encode_coding_system
[new_outfd
]
6727 = xmalloc (sizeof (struct coding_system
));
6730 *proc_encode_coding_system
[new_outfd
]
6731 = *proc_encode_coding_system
[old_outfd
];
6732 memset (proc_encode_coding_system
[old_outfd
], 0,
6733 sizeof (struct coding_system
));
6736 setup_coding_system (p
->encode_coding_system
,
6737 proc_encode_coding_system
[new_outfd
]);
6742 /* The main Emacs thread records child processes in three places:
6744 - Vprocess_alist, for asynchronous subprocesses, which are child
6745 processes visible to Lisp.
6747 - deleted_pid_list, for child processes invisible to Lisp,
6748 typically because of delete-process. These are recorded so that
6749 the processes can be reaped when they exit, so that the operating
6750 system's process table is not cluttered by zombies.
6752 - the local variable PID in Fcall_process, call_process_cleanup and
6753 call_process_kill, for synchronous subprocesses.
6754 record_unwind_protect is used to make sure this process is not
6755 forgotten: if the user interrupts call-process and the child
6756 process refuses to exit immediately even with two C-g's,
6757 call_process_kill adds PID's contents to deleted_pid_list before
6760 The main Emacs thread invokes waitpid only on child processes that
6761 it creates and that have not been reaped. This avoid races on
6762 platforms such as GTK, where other threads create their own
6763 subprocesses which the main thread should not reap. For example,
6764 if the main thread attempted to reap an already-reaped child, it
6765 might inadvertently reap a GTK-created process that happened to
6766 have the same process ID. */
6768 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6769 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6770 keep track of its own children. GNUstep is similar. */
6772 static void dummy_handler (int sig
) {}
6773 static signal_handler_t
volatile lib_child_handler
;
6775 /* Handle a SIGCHLD signal by looking for known child processes of
6776 Emacs whose status have changed. For each one found, record its
6779 All we do is change the status; we do not run sentinels or print
6780 notifications. That is saved for the next time keyboard input is
6781 done, in order to avoid timing errors.
6783 ** WARNING: this can be called during garbage collection.
6784 Therefore, it must not be fooled by the presence of mark bits in
6787 ** USG WARNING: Although it is not obvious from the documentation
6788 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6789 signal() before executing at least one wait(), otherwise the
6790 handler will be called again, resulting in an infinite loop. The
6791 relevant portion of the documentation reads "SIGCLD signals will be
6792 queued and the signal-catching function will be continually
6793 reentered until the queue is empty". Invoking signal() causes the
6794 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6797 ** Malloc WARNING: This should never call malloc either directly or
6798 indirectly; if it does, that is a bug. */
6801 handle_child_signal (int sig
)
6803 Lisp_Object tail
, proc
;
6805 /* Find the process that signaled us, and record its status. */
6807 /* The process can have been deleted by Fdelete_process, or have
6808 been started asynchronously by Fcall_process. */
6809 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6811 bool all_pids_are_fixnums
6812 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6813 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6814 Lisp_Object head
= XCAR (tail
);
6819 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6822 if (INTEGERP (xpid
))
6823 deleted_pid
= XINT (xpid
);
6825 deleted_pid
= XFLOAT_DATA (xpid
);
6826 if (child_status_changed (deleted_pid
, 0, 0))
6828 if (STRINGP (XCDR (head
)))
6829 unlink (SSDATA (XCDR (head
)));
6830 XSETCAR (tail
, Qnil
);
6835 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6836 FOR_EACH_PROCESS (tail
, proc
)
6838 struct Lisp_Process
*p
= XPROCESS (proc
);
6842 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6844 /* Change the status of the process that was found. */
6845 p
->tick
= ++process_tick
;
6846 p
->raw_status
= status
;
6847 p
->raw_status_new
= 1;
6849 /* If process has terminated, stop waiting for its output. */
6850 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6852 bool clear_desc_flag
= 0;
6855 clear_desc_flag
= 1;
6857 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6858 if (clear_desc_flag
)
6860 FD_CLR (p
->infd
, &input_wait_mask
);
6861 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6867 lib_child_handler (sig
);
6868 #ifdef NS_IMPL_GNUSTEP
6869 /* NSTask in GNUstep sets its child handler each time it is called.
6870 So we must re-set ours. */
6871 catch_child_signal ();
6876 deliver_child_signal (int sig
)
6878 deliver_process_signal (sig
, handle_child_signal
);
6883 exec_sentinel_error_handler (Lisp_Object error_val
)
6885 cmd_error_internal (error_val
, "error in process sentinel: ");
6887 update_echo_area ();
6888 Fsleep_for (make_number (2), Qnil
);
6893 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6895 Lisp_Object sentinel
, odeactivate
;
6896 struct Lisp_Process
*p
= XPROCESS (proc
);
6897 ptrdiff_t count
= SPECPDL_INDEX ();
6898 bool outer_running_asynch_code
= running_asynch_code
;
6899 int waiting
= waiting_for_user_input_p
;
6901 if (inhibit_sentinels
)
6904 odeactivate
= Vdeactivate_mark
;
6906 Lisp_Object obuffer
, okeymap
;
6907 XSETBUFFER (obuffer
, current_buffer
);
6908 okeymap
= BVAR (current_buffer
, keymap
);
6911 /* There's no good reason to let sentinels change the current
6912 buffer, and many callers of accept-process-output, sit-for, and
6913 friends don't expect current-buffer to be changed from under them. */
6914 record_unwind_current_buffer ();
6916 sentinel
= p
->sentinel
;
6918 /* Inhibit quit so that random quits don't screw up a running filter. */
6919 specbind (Qinhibit_quit
, Qt
);
6920 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6922 /* In case we get recursively called,
6923 and we already saved the match data nonrecursively,
6924 save the same match data in safely recursive fashion. */
6925 if (outer_running_asynch_code
)
6928 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6929 restore_search_regs ();
6930 record_unwind_save_match_data ();
6931 Fset_match_data (tem
, Qt
);
6934 /* For speed, if a search happens within this code,
6935 save the match data in a special nonrecursive fashion. */
6936 running_asynch_code
= 1;
6938 internal_condition_case_1 (read_process_output_call
,
6939 list3 (sentinel
, proc
, reason
),
6940 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6941 exec_sentinel_error_handler
);
6943 /* If we saved the match data nonrecursively, restore it now. */
6944 restore_search_regs ();
6945 running_asynch_code
= outer_running_asynch_code
;
6947 Vdeactivate_mark
= odeactivate
;
6949 /* Restore waiting_for_user_input_p as it was
6950 when we were called, in case the filter clobbered it. */
6951 waiting_for_user_input_p
= waiting
;
6954 if (! EQ (Fcurrent_buffer (), obuffer
)
6955 || ! EQ (current_buffer
->keymap
, okeymap
))
6957 /* But do it only if the caller is actually going to read events.
6958 Otherwise there's no need to make him wake up, and it could
6959 cause trouble (for example it would make sit_for return). */
6960 if (waiting_for_user_input_p
== -1)
6961 record_asynch_buffer_change ();
6963 unbind_to (count
, Qnil
);
6966 /* Report all recent events of a change in process status
6967 (either run the sentinel or output a message).
6968 This is usually done while Emacs is waiting for keyboard input
6969 but can be done at other times.
6971 Return positive if any input was received from WAIT_PROC (or from
6972 any process if WAIT_PROC is null), zero if input was attempted but
6973 none received, and negative if we didn't even try. */
6976 status_notify (struct Lisp_Process
*deleting_process
,
6977 struct Lisp_Process
*wait_proc
)
6980 Lisp_Object tail
, msg
;
6981 int got_some_output
= -1;
6986 /* Set this now, so that if new processes are created by sentinels
6987 that we run, we get called again to handle their status changes. */
6988 update_tick
= process_tick
;
6990 FOR_EACH_PROCESS (tail
, proc
)
6993 register struct Lisp_Process
*p
= XPROCESS (proc
);
6995 if (p
->tick
!= p
->update_tick
)
6997 p
->update_tick
= p
->tick
;
6999 /* If process is still active, read any output that remains. */
7000 while (! EQ (p
->filter
, Qt
)
7001 && ! EQ (p
->status
, Qconnect
)
7002 && ! EQ (p
->status
, Qlisten
)
7003 /* Network or serial process not stopped: */
7004 && ! EQ (p
->command
, Qt
)
7006 && p
!= deleting_process
)
7008 int nread
= read_process_output (proc
, p
->infd
);
7009 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
7010 && got_some_output
< nread
)
7011 got_some_output
= nread
;
7016 /* Get the text to use for the message. */
7017 if (p
->raw_status_new
)
7019 msg
= status_message (p
);
7021 /* If process is terminated, deactivate it or delete it. */
7023 if (CONSP (p
->status
))
7024 symbol
= XCAR (p
->status
);
7026 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
7027 || EQ (symbol
, Qclosed
))
7029 if (delete_exited_processes
)
7030 remove_process (proc
);
7032 deactivate_process (proc
);
7035 /* The actions above may have further incremented p->tick.
7036 So set p->update_tick again so that an error in the sentinel will
7037 not cause this code to be run again. */
7038 p
->update_tick
= p
->tick
;
7039 /* Now output the message suitably. */
7040 exec_sentinel (proc
, msg
);
7041 if (BUFFERP (p
->buffer
))
7042 /* In case it uses %s in mode-line-format. */
7043 bset_update_mode_line (XBUFFER (p
->buffer
));
7047 return got_some_output
;
7050 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
7051 Sinternal_default_process_sentinel
, 2, 2, 0,
7052 doc
: /* Function used as default sentinel for processes.
7053 This inserts a status message into the process's buffer, if there is one. */)
7054 (Lisp_Object proc
, Lisp_Object msg
)
7056 Lisp_Object buffer
, symbol
;
7057 struct Lisp_Process
*p
;
7058 CHECK_PROCESS (proc
);
7059 p
= XPROCESS (proc
);
7063 symbol
= XCAR (symbol
);
7065 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
7068 struct buffer
*old
= current_buffer
;
7069 ptrdiff_t opoint
, opoint_byte
;
7070 ptrdiff_t before
, before_byte
;
7072 /* Avoid error if buffer is deleted
7073 (probably that's why the process is dead, too). */
7074 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
7076 Fset_buffer (buffer
);
7078 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
7079 msg
= (code_convert_string_norecord
7080 (msg
, Vlocale_coding_system
, 1));
7083 opoint_byte
= PT_BYTE
;
7084 /* Insert new output into buffer
7085 at the current end-of-output marker,
7086 thus preserving logical ordering of input and output. */
7087 if (XMARKER (p
->mark
)->buffer
)
7088 Fgoto_char (p
->mark
);
7090 SET_PT_BOTH (ZV
, ZV_BYTE
);
7093 before_byte
= PT_BYTE
;
7095 tem
= BVAR (current_buffer
, read_only
);
7096 bset_read_only (current_buffer
, Qnil
);
7097 insert_string ("\nProcess ");
7098 { /* FIXME: temporary kludge. */
7099 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
7100 insert_string (" ");
7102 bset_read_only (current_buffer
, tem
);
7103 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7105 if (opoint
>= before
)
7106 SET_PT_BOTH (opoint
+ (PT
- before
),
7107 opoint_byte
+ (PT_BYTE
- before_byte
));
7109 SET_PT_BOTH (opoint
, opoint_byte
);
7111 set_buffer_internal (old
);
7117 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7118 Sset_process_coding_system
, 1, 3, 0,
7119 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7120 DECODING will be used to decode subprocess output and ENCODING to
7121 encode subprocess input. */)
7122 (Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
7124 CHECK_PROCESS (process
);
7126 struct Lisp_Process
*p
= XPROCESS (process
);
7128 Fcheck_coding_system (decoding
);
7129 Fcheck_coding_system (encoding
);
7130 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7131 pset_decode_coding_system (p
, decoding
);
7132 pset_encode_coding_system (p
, encoding
);
7134 /* If the sockets haven't been set up yet, the final setup part of
7135 this will be called asynchronously. */
7136 if (p
->infd
< 0 || p
->outfd
< 0)
7139 setup_process_coding_systems (process
);
7144 DEFUN ("process-coding-system",
7145 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7146 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7147 (register Lisp_Object process
)
7149 CHECK_PROCESS (process
);
7150 return Fcons (XPROCESS (process
)->decode_coding_system
,
7151 XPROCESS (process
)->encode_coding_system
);
7154 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7155 Sset_process_filter_multibyte
, 2, 2, 0,
7156 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7157 If FLAG is non-nil, the filter is given multibyte strings.
7158 If FLAG is nil, the filter is given unibyte strings. In this case,
7159 all character code conversion except for end-of-line conversion is
7161 (Lisp_Object process
, Lisp_Object flag
)
7163 CHECK_PROCESS (process
);
7165 struct Lisp_Process
*p
= XPROCESS (process
);
7167 pset_decode_coding_system
7168 (p
, raw_text_coding_system (p
->decode_coding_system
));
7170 /* If the sockets haven't been set up yet, the final setup part of
7171 this will be called asynchronously. */
7172 if (p
->infd
< 0 || p
->outfd
< 0)
7175 setup_process_coding_systems (process
);
7180 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7181 Sprocess_filter_multibyte_p
, 1, 1, 0,
7182 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7183 (Lisp_Object process
)
7185 CHECK_PROCESS (process
);
7186 struct Lisp_Process
*p
= XPROCESS (process
);
7189 struct coding_system
*coding
= proc_decode_coding_system
[p
->infd
];
7190 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7199 add_gpm_wait_descriptor (int desc
)
7201 add_keyboard_wait_descriptor (desc
);
7205 delete_gpm_wait_descriptor (int desc
)
7207 delete_keyboard_wait_descriptor (desc
);
7212 # ifdef USABLE_SIGIO
7214 /* Return true if *MASK has a bit set
7215 that corresponds to one of the keyboard input descriptors. */
7218 keyboard_bit_set (fd_set
*mask
)
7222 for (fd
= 0; fd
<= max_input_desc
; fd
++)
7223 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7224 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7231 #else /* not subprocesses */
7233 /* Defined in msdos.c. */
7234 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
7235 struct timespec
*, void *);
7237 /* Implementation of wait_reading_process_output, assuming that there
7238 are no subprocesses. Used only by the MS-DOS build.
7240 Wait for timeout to elapse and/or keyboard input to be available.
7244 If negative, gobble data immediately available but don't wait for any.
7247 an additional duration to wait, measured in nanoseconds
7248 If TIME_LIMIT is zero, then:
7249 If NSECS == 0, there is no limit.
7250 If NSECS > 0, the timeout consists of NSECS only.
7251 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
7254 0 to ignore keyboard input, or
7255 1 to return when input is available, or
7256 -1 means caller will actually read the input, so don't throw to
7259 see full version for other parameters. We know that wait_proc will
7260 always be NULL, since `subprocesses' isn't defined.
7262 DO_DISPLAY means redisplay should be done to show subprocess
7263 output that arrives.
7265 Return -1 signifying we got no output and did not try. */
7268 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
7270 Lisp_Object wait_for_cell
,
7271 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
7274 struct timespec end_time
, timeout
;
7275 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
7277 if (TYPE_MAXIMUM (time_t) < time_limit
)
7278 time_limit
= TYPE_MAXIMUM (time_t);
7280 if (time_limit
< 0 || nsecs
< 0)
7282 else if (time_limit
> 0 || nsecs
> 0)
7285 end_time
= timespec_add (current_timespec (),
7286 make_timespec (time_limit
, nsecs
));
7291 /* Turn off periodic alarms (in case they are in use)
7292 and then turn off any other atimers,
7293 because the select emulator uses alarms. */
7295 turn_on_atimers (0);
7299 bool timeout_reduced_for_timers
= false;
7300 fd_set waitchannels
;
7303 /* If calling from keyboard input, do not quit
7304 since we want to return C-g as an input character.
7305 Otherwise, do pending quit if requested. */
7309 /* Exit now if the cell we're waiting for became non-nil. */
7310 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7313 /* Compute time from now till when time limit is up. */
7314 /* Exit if already run out. */
7315 if (wait
== TIMEOUT
)
7317 struct timespec now
= current_timespec ();
7318 if (timespec_cmp (end_time
, now
) <= 0)
7320 timeout
= timespec_sub (end_time
, now
);
7323 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
7325 /* If our caller will not immediately handle keyboard events,
7326 run timer events directly.
7327 (Callers that will immediately read keyboard events
7328 call timer_delay on their own.) */
7329 if (NILP (wait_for_cell
))
7331 struct timespec timer_delay
;
7335 unsigned old_timers_run
= timers_run
;
7336 timer_delay
= timer_check ();
7337 if (timers_run
!= old_timers_run
&& do_display
)
7338 /* We must retry, since a timer may have requeued itself
7339 and that could alter the time delay. */
7340 redisplay_preserve_echo_area (14);
7344 while (!detect_input_pending ());
7346 /* If there is unread keyboard input, also return. */
7348 && requeued_events_pending_p ())
7351 if (timespec_valid_p (timer_delay
))
7353 if (timespec_cmp (timer_delay
, timeout
) < 0)
7355 timeout
= timer_delay
;
7356 timeout_reduced_for_timers
= true;
7361 /* Cause C-g and alarm signals to take immediate action,
7362 and cause input available signals to zero out timeout. */
7364 set_waiting_for_input (&timeout
);
7366 /* If a frame has been newly mapped and needs updating,
7367 reprocess its display stuff. */
7368 if (frame_garbaged
&& do_display
)
7370 clear_waiting_for_input ();
7371 redisplay_preserve_echo_area (15);
7373 set_waiting_for_input (&timeout
);
7376 /* Wait till there is something to do. */
7377 FD_ZERO (&waitchannels
);
7378 if (read_kbd
&& detect_input_pending ())
7382 if (read_kbd
|| !NILP (wait_for_cell
))
7383 FD_SET (0, &waitchannels
);
7384 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
7389 /* Make C-g and alarm signals set flags again. */
7390 clear_waiting_for_input ();
7392 /* If we woke up due to SIGWINCH, actually change size now. */
7393 do_pending_window_change (0);
7395 if (wait
< INFINITY
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7396 /* We waited the full specified time, so return now. */
7401 /* If the system call was interrupted, then go around the
7403 if (xerrno
== EINTR
)
7404 FD_ZERO (&waitchannels
);
7406 report_file_errno ("Failed select", Qnil
, xerrno
);
7409 /* Check for keyboard input. */
7412 && detect_input_pending_run_timers (do_display
))
7414 swallow_events (do_display
);
7415 if (detect_input_pending_run_timers (do_display
))
7419 /* If there is unread keyboard input, also return. */
7421 && requeued_events_pending_p ())
7424 /* If wait_for_cell. check for keyboard input
7425 but don't run any timers.
7426 ??? (It seems wrong to me to check for keyboard
7427 input at all when wait_for_cell, but the code
7428 has been this way since July 1994.
7429 Try changing this after version 19.31.) */
7430 if (! NILP (wait_for_cell
)
7431 && detect_input_pending ())
7433 swallow_events (do_display
);
7434 if (detect_input_pending ())
7438 /* Exit now if the cell we're waiting for became non-nil. */
7439 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7448 #endif /* not subprocesses */
7450 /* The following functions are needed even if async subprocesses are
7451 not supported. Some of them are no-op stubs in that case. */
7455 /* Add FD, which is a descriptor returned by timerfd_create,
7456 to the set of non-keyboard input descriptors. */
7459 add_timer_wait_descriptor (int fd
)
7461 FD_SET (fd
, &input_wait_mask
);
7462 FD_SET (fd
, &non_keyboard_wait_mask
);
7463 FD_SET (fd
, &non_process_wait_mask
);
7464 fd_callback_info
[fd
].func
= timerfd_callback
;
7465 fd_callback_info
[fd
].data
= NULL
;
7466 fd_callback_info
[fd
].condition
|= FOR_READ
;
7467 if (fd
> max_input_desc
)
7468 max_input_desc
= fd
;
7471 #endif /* HAVE_TIMERFD */
7473 /* If program file NAME starts with /: for quoting a magic
7474 name, remove that, preserving the multibyteness of NAME. */
7477 remove_slash_colon (Lisp_Object name
)
7480 ((SBYTES (name
) > 2 && SREF (name
, 0) == '/' && SREF (name
, 1) == ':')
7481 ? make_specified_string (SSDATA (name
) + 2, SCHARS (name
) - 2,
7482 SBYTES (name
) - 2, STRING_MULTIBYTE (name
))
7486 /* Add DESC to the set of keyboard input descriptors. */
7489 add_keyboard_wait_descriptor (int desc
)
7491 #ifdef subprocesses /* Actually means "not MSDOS". */
7492 FD_SET (desc
, &input_wait_mask
);
7493 FD_SET (desc
, &non_process_wait_mask
);
7494 if (desc
> max_input_desc
)
7495 max_input_desc
= desc
;
7499 /* From now on, do not expect DESC to give keyboard input. */
7502 delete_keyboard_wait_descriptor (int desc
)
7505 FD_CLR (desc
, &input_wait_mask
);
7506 FD_CLR (desc
, &non_process_wait_mask
);
7507 delete_input_desc (desc
);
7511 /* Setup coding systems of PROCESS. */
7514 setup_process_coding_systems (Lisp_Object process
)
7517 struct Lisp_Process
*p
= XPROCESS (process
);
7519 int outch
= p
->outfd
;
7520 Lisp_Object coding_system
;
7522 if (inch
< 0 || outch
< 0)
7525 if (!proc_decode_coding_system
[inch
])
7526 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
7527 coding_system
= p
->decode_coding_system
;
7528 if (EQ (p
->filter
, Qinternal_default_process_filter
)
7529 && BUFFERP (p
->buffer
))
7531 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
7532 coding_system
= raw_text_coding_system (coding_system
);
7534 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7536 if (!proc_encode_coding_system
[outch
])
7537 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
7538 setup_coding_system (p
->encode_coding_system
,
7539 proc_encode_coding_system
[outch
]);
7543 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7544 doc
: /* Return the (or a) live process associated with BUFFER.
7545 BUFFER may be a buffer or the name of one.
7546 Return nil if all processes associated with BUFFER have been
7547 deleted or killed. */)
7548 (register Lisp_Object buffer
)
7551 register Lisp_Object buf
, tail
, proc
;
7553 if (NILP (buffer
)) return Qnil
;
7554 buf
= Fget_buffer (buffer
);
7555 if (NILP (buf
)) return Qnil
;
7557 FOR_EACH_PROCESS (tail
, proc
)
7558 if (EQ (XPROCESS (proc
)->buffer
, buf
))
7560 #endif /* subprocesses */
7564 DEFUN ("process-inherit-coding-system-flag",
7565 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7567 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7568 If this flag is t, `buffer-file-coding-system' of the buffer
7569 associated with PROCESS will inherit the coding system used to decode
7570 the process output. */)
7571 (register Lisp_Object process
)
7574 CHECK_PROCESS (process
);
7575 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7577 /* Ignore the argument and return the value of
7578 inherit-process-coding-system. */
7579 return inherit_process_coding_system
? Qt
: Qnil
;
7583 /* Kill all processes associated with `buffer'.
7584 If `buffer' is nil, kill all processes. */
7587 kill_buffer_processes (Lisp_Object buffer
)
7590 Lisp_Object tail
, proc
;
7592 FOR_EACH_PROCESS (tail
, proc
)
7593 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
7595 if (NETCONN_P (proc
) || SERIALCONN_P (proc
) || PIPECONN_P (proc
))
7596 Fdelete_process (proc
);
7597 else if (XPROCESS (proc
)->infd
>= 0)
7598 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7600 #else /* subprocesses */
7601 /* Since we have no subprocesses, this does nothing. */
7602 #endif /* subprocesses */
7605 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7606 Swaiting_for_user_input_p
, 0, 0, 0,
7607 doc
: /* Return non-nil if Emacs is waiting for input from the user.
7608 This is intended for use by asynchronous process output filters and sentinels. */)
7612 return (waiting_for_user_input_p
? Qt
: Qnil
);
7618 /* Stop reading input from keyboard sources. */
7621 hold_keyboard_input (void)
7626 /* Resume reading input from keyboard sources. */
7629 unhold_keyboard_input (void)
7634 /* Return true if keyboard input is on hold, zero otherwise. */
7637 kbd_on_hold_p (void)
7639 return kbd_is_on_hold
;
7643 /* Enumeration of and access to system processes a-la ps(1). */
7645 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7647 doc
: /* Return a list of numerical process IDs of all running processes.
7648 If this functionality is unsupported, return nil.
7650 See `process-attributes' for getting attributes of a process given its ID. */)
7653 return list_system_processes ();
7656 DEFUN ("process-attributes", Fprocess_attributes
,
7657 Sprocess_attributes
, 1, 1, 0,
7658 doc
: /* Return attributes of the process given by its PID, a number.
7660 Value is an alist where each element is a cons cell of the form
7664 If this functionality is unsupported, the value is nil.
7666 See `list-system-processes' for getting a list of all process IDs.
7668 The KEYs of the attributes that this function may return are listed
7669 below, together with the type of the associated VALUE (in parentheses).
7670 Not all platforms support all of these attributes; unsupported
7671 attributes will not appear in the returned alist.
7672 Unless explicitly indicated otherwise, numbers can have either
7673 integer or floating point values.
7675 euid -- Effective user User ID of the process (number)
7676 user -- User name corresponding to euid (string)
7677 egid -- Effective user Group ID of the process (number)
7678 group -- Group name corresponding to egid (string)
7679 comm -- Command name (executable name only) (string)
7680 state -- Process state code, such as "S", "R", or "T" (string)
7681 ppid -- Parent process ID (number)
7682 pgrp -- Process group ID (number)
7683 sess -- Session ID, i.e. process ID of session leader (number)
7684 ttname -- Controlling tty name (string)
7685 tpgid -- ID of foreground process group on the process's tty (number)
7686 minflt -- number of minor page faults (number)
7687 majflt -- number of major page faults (number)
7688 cminflt -- cumulative number of minor page faults (number)
7689 cmajflt -- cumulative number of major page faults (number)
7690 utime -- user time used by the process, in (current-time) format,
7691 which is a list of integers (HIGH LOW USEC PSEC)
7692 stime -- system time used by the process (current-time)
7693 time -- sum of utime and stime (current-time)
7694 cutime -- user time used by the process and its children (current-time)
7695 cstime -- system time used by the process and its children (current-time)
7696 ctime -- sum of cutime and cstime (current-time)
7697 pri -- priority of the process (number)
7698 nice -- nice value of the process (number)
7699 thcount -- process thread count (number)
7700 start -- time the process started (current-time)
7701 vsize -- virtual memory size of the process in KB's (number)
7702 rss -- resident set size of the process in KB's (number)
7703 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7704 pcpu -- percents of CPU time used by the process (floating-point number)
7705 pmem -- percents of total physical memory used by process's resident set
7706 (floating-point number)
7707 args -- command line which invoked the process (string). */)
7710 return system_process_attributes (pid
);
7714 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7715 Invoke this after init_process_emacs, and after glib and/or GNUstep
7716 futz with the SIGCHLD handler, but before Emacs forks any children.
7717 This function's caller should block SIGCHLD. */
7720 catch_child_signal (void)
7722 struct sigaction action
, old_action
;
7724 emacs_sigaction_init (&action
, deliver_child_signal
);
7725 block_child_signal (&oldset
);
7726 sigaction (SIGCHLD
, &action
, &old_action
);
7727 eassert (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7728 || ! (old_action
.sa_flags
& SA_SIGINFO
));
7730 if (old_action
.sa_handler
!= deliver_child_signal
)
7732 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7734 : old_action
.sa_handler
);
7735 unblock_child_signal (&oldset
);
7737 #endif /* subprocesses */
7740 /* This is not called "init_process" because that is the name of a
7741 Mach system call, so it would cause problems on Darwin systems. */
7743 init_process_emacs (int sockfd
)
7748 inhibit_sentinels
= 0;
7751 if (! noninteractive
|| initialized
)
7754 #if defined HAVE_GLIB && !defined WINDOWSNT
7755 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7756 this should always fail, but is enough to initialize glib's
7757 private SIGCHLD handler, allowing catch_child_signal to copy
7758 it into lib_child_handler. */
7759 g_source_unref (g_child_watch_source_new (getpid ()));
7761 catch_child_signal ();
7764 FD_ZERO (&input_wait_mask
);
7765 FD_ZERO (&non_keyboard_wait_mask
);
7766 FD_ZERO (&non_process_wait_mask
);
7767 FD_ZERO (&write_mask
);
7768 max_process_desc
= max_input_desc
= -1;
7769 external_sock_fd
= sockfd
;
7770 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7772 FD_ZERO (&connect_wait_mask
);
7773 num_pending_connects
= 0;
7775 process_output_delay_count
= 0;
7776 process_output_skip
= 0;
7778 /* Don't do this, it caused infinite select loops. The display
7779 method should call add_keyboard_wait_descriptor on stdin if it
7782 FD_SET (0, &input_wait_mask
);
7785 Vprocess_alist
= Qnil
;
7786 deleted_pid_list
= Qnil
;
7787 for (i
= 0; i
< FD_SETSIZE
; i
++)
7789 chan_process
[i
] = Qnil
;
7790 proc_buffered_char
[i
] = -1;
7792 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7793 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7794 #ifdef DATAGRAM_SOCKETS
7795 memset (datagram_address
, 0, sizeof datagram_address
);
7798 #if defined (DARWIN_OS)
7799 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7800 processes. As such, we only change the default value. */
7803 char const *release
= (STRINGP (Voperating_system_release
)
7804 ? SSDATA (Voperating_system_release
)
7806 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7807 Vprocess_connection_type
= Qnil
;
7811 #endif /* subprocesses */
7816 syms_of_process (void)
7820 DEFSYM (Qprocessp
, "processp");
7821 DEFSYM (Qrun
, "run");
7822 DEFSYM (Qstop
, "stop");
7823 DEFSYM (Qsignal
, "signal");
7825 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7828 DEFSYM (Qopen
, "open");
7829 DEFSYM (Qclosed
, "closed");
7830 DEFSYM (Qconnect
, "connect");
7831 DEFSYM (Qfailed
, "failed");
7832 DEFSYM (Qlisten
, "listen");
7833 DEFSYM (Qlocal
, "local");
7834 DEFSYM (Qipv4
, "ipv4");
7836 DEFSYM (Qipv6
, "ipv6");
7838 DEFSYM (Qdatagram
, "datagram");
7839 DEFSYM (Qseqpacket
, "seqpacket");
7841 DEFSYM (QCport
, ":port");
7842 DEFSYM (QCspeed
, ":speed");
7843 DEFSYM (QCprocess
, ":process");
7845 DEFSYM (QCbytesize
, ":bytesize");
7846 DEFSYM (QCstopbits
, ":stopbits");
7847 DEFSYM (QCparity
, ":parity");
7848 DEFSYM (Qodd
, "odd");
7849 DEFSYM (Qeven
, "even");
7850 DEFSYM (QCflowcontrol
, ":flowcontrol");
7853 DEFSYM (QCsummary
, ":summary");
7855 DEFSYM (Qreal
, "real");
7856 DEFSYM (Qnetwork
, "network");
7857 DEFSYM (Qserial
, "serial");
7858 DEFSYM (Qpipe
, "pipe");
7859 DEFSYM (QCbuffer
, ":buffer");
7860 DEFSYM (QChost
, ":host");
7861 DEFSYM (QCservice
, ":service");
7862 DEFSYM (QClocal
, ":local");
7863 DEFSYM (QCremote
, ":remote");
7864 DEFSYM (QCcoding
, ":coding");
7865 DEFSYM (QCserver
, ":server");
7866 DEFSYM (QCnowait
, ":nowait");
7867 DEFSYM (QCsentinel
, ":sentinel");
7868 DEFSYM (QCuse_external_socket
, ":use-external-socket");
7869 DEFSYM (QCtls_parameters
, ":tls-parameters");
7870 DEFSYM (Qnsm_verify_connection
, "nsm-verify-connection");
7871 DEFSYM (QClog
, ":log");
7872 DEFSYM (QCnoquery
, ":noquery");
7873 DEFSYM (QCstop
, ":stop");
7874 DEFSYM (QCplist
, ":plist");
7875 DEFSYM (QCcommand
, ":command");
7876 DEFSYM (QCconnection_type
, ":connection-type");
7877 DEFSYM (QCstderr
, ":stderr");
7878 DEFSYM (Qpty
, "pty");
7879 DEFSYM (Qpipe
, "pipe");
7881 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7883 staticpro (&Vprocess_alist
);
7884 staticpro (&deleted_pid_list
);
7886 #endif /* subprocesses */
7888 DEFSYM (QCname
, ":name");
7889 DEFSYM (QCtype
, ":type");
7891 DEFSYM (Qeuid
, "euid");
7892 DEFSYM (Qegid
, "egid");
7893 DEFSYM (Quser
, "user");
7894 DEFSYM (Qgroup
, "group");
7895 DEFSYM (Qcomm
, "comm");
7896 DEFSYM (Qstate
, "state");
7897 DEFSYM (Qppid
, "ppid");
7898 DEFSYM (Qpgrp
, "pgrp");
7899 DEFSYM (Qsess
, "sess");
7900 DEFSYM (Qttname
, "ttname");
7901 DEFSYM (Qtpgid
, "tpgid");
7902 DEFSYM (Qminflt
, "minflt");
7903 DEFSYM (Qmajflt
, "majflt");
7904 DEFSYM (Qcminflt
, "cminflt");
7905 DEFSYM (Qcmajflt
, "cmajflt");
7906 DEFSYM (Qutime
, "utime");
7907 DEFSYM (Qstime
, "stime");
7908 DEFSYM (Qtime
, "time");
7909 DEFSYM (Qcutime
, "cutime");
7910 DEFSYM (Qcstime
, "cstime");
7911 DEFSYM (Qctime
, "ctime");
7913 DEFSYM (Qinternal_default_process_sentinel
,
7914 "internal-default-process-sentinel");
7915 DEFSYM (Qinternal_default_process_filter
,
7916 "internal-default-process-filter");
7918 DEFSYM (Qpri
, "pri");
7919 DEFSYM (Qnice
, "nice");
7920 DEFSYM (Qthcount
, "thcount");
7921 DEFSYM (Qstart
, "start");
7922 DEFSYM (Qvsize
, "vsize");
7923 DEFSYM (Qrss
, "rss");
7924 DEFSYM (Qetime
, "etime");
7925 DEFSYM (Qpcpu
, "pcpu");
7926 DEFSYM (Qpmem
, "pmem");
7927 DEFSYM (Qargs
, "args");
7929 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7930 doc
: /* Non-nil means delete processes immediately when they exit.
7931 A value of nil means don't delete them until `list-processes' is run. */);
7933 delete_exited_processes
= 1;
7936 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7937 doc
: /* Control type of device used to communicate with subprocesses.
7938 Values are nil to use a pipe, or t or `pty' to use a pty.
7939 The value has no effect if the system has no ptys or if all ptys are busy:
7940 then a pipe is used in any case.
7941 The value takes effect when `start-process' is called. */);
7942 Vprocess_connection_type
= Qt
;
7944 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7945 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7946 On some systems, when Emacs reads the output from a subprocess, the output data
7947 is read in very small blocks, potentially resulting in very poor performance.
7948 This behavior can be remedied to some extent by setting this variable to a
7949 non-nil value, as it will automatically delay reading from such processes, to
7950 allow them to produce more output before Emacs tries to read it.
7951 If the value is t, the delay is reset after each write to the process; any other
7952 non-nil value means that the delay is not reset on write.
7953 The variable takes effect when `start-process' is called. */);
7954 Vprocess_adaptive_read_buffering
= Qt
;
7956 defsubr (&Sprocessp
);
7957 defsubr (&Sget_process
);
7958 defsubr (&Sdelete_process
);
7959 defsubr (&Sprocess_status
);
7960 defsubr (&Sprocess_exit_status
);
7961 defsubr (&Sprocess_id
);
7962 defsubr (&Sprocess_name
);
7963 defsubr (&Sprocess_tty_name
);
7964 defsubr (&Sprocess_command
);
7965 defsubr (&Sset_process_buffer
);
7966 defsubr (&Sprocess_buffer
);
7967 defsubr (&Sprocess_mark
);
7968 defsubr (&Sset_process_filter
);
7969 defsubr (&Sprocess_filter
);
7970 defsubr (&Sset_process_sentinel
);
7971 defsubr (&Sprocess_sentinel
);
7972 defsubr (&Sset_process_window_size
);
7973 defsubr (&Sset_process_inherit_coding_system_flag
);
7974 defsubr (&Sset_process_query_on_exit_flag
);
7975 defsubr (&Sprocess_query_on_exit_flag
);
7976 defsubr (&Sprocess_contact
);
7977 defsubr (&Sprocess_plist
);
7978 defsubr (&Sset_process_plist
);
7979 defsubr (&Sprocess_list
);
7980 defsubr (&Smake_process
);
7981 defsubr (&Smake_pipe_process
);
7982 defsubr (&Sserial_process_configure
);
7983 defsubr (&Smake_serial_process
);
7984 defsubr (&Sset_network_process_option
);
7985 defsubr (&Smake_network_process
);
7986 defsubr (&Sformat_network_address
);
7987 defsubr (&Snetwork_interface_list
);
7988 defsubr (&Snetwork_interface_info
);
7989 #ifdef DATAGRAM_SOCKETS
7990 defsubr (&Sprocess_datagram_address
);
7991 defsubr (&Sset_process_datagram_address
);
7993 defsubr (&Saccept_process_output
);
7994 defsubr (&Sprocess_send_region
);
7995 defsubr (&Sprocess_send_string
);
7996 defsubr (&Sinterrupt_process
);
7997 defsubr (&Skill_process
);
7998 defsubr (&Squit_process
);
7999 defsubr (&Sstop_process
);
8000 defsubr (&Scontinue_process
);
8001 defsubr (&Sprocess_running_child_p
);
8002 defsubr (&Sprocess_send_eof
);
8003 defsubr (&Ssignal_process
);
8004 defsubr (&Swaiting_for_user_input_p
);
8005 defsubr (&Sprocess_type
);
8006 defsubr (&Sinternal_default_process_sentinel
);
8007 defsubr (&Sinternal_default_process_filter
);
8008 defsubr (&Sset_process_coding_system
);
8009 defsubr (&Sprocess_coding_system
);
8010 defsubr (&Sset_process_filter_multibyte
);
8011 defsubr (&Sprocess_filter_multibyte_p
);
8014 Lisp_Object subfeatures
= Qnil
;
8015 const struct socket_options
*sopt
;
8017 #define ADD_SUBFEATURE(key, val) \
8018 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
8020 ADD_SUBFEATURE (QCnowait
, Qt
);
8021 #ifdef DATAGRAM_SOCKETS
8022 ADD_SUBFEATURE (QCtype
, Qdatagram
);
8024 #ifdef HAVE_SEQPACKET
8025 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
8027 #ifdef HAVE_LOCAL_SOCKETS
8028 ADD_SUBFEATURE (QCfamily
, Qlocal
);
8030 ADD_SUBFEATURE (QCfamily
, Qipv4
);
8032 ADD_SUBFEATURE (QCfamily
, Qipv6
);
8034 #ifdef HAVE_GETSOCKNAME
8035 ADD_SUBFEATURE (QCservice
, Qt
);
8037 ADD_SUBFEATURE (QCserver
, Qt
);
8039 for (sopt
= socket_options
; sopt
->name
; sopt
++)
8040 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
8042 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
8045 #endif /* subprocesses */
8047 defsubr (&Sget_buffer_process
);
8048 defsubr (&Sprocess_inherit_coding_system_flag
);
8049 defsubr (&Slist_system_processes
);
8050 defsubr (&Sprocess_attributes
);