1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011
4 Free Software Foundation, Inc.
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
11 (at 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/>. */
27 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
31 #ifdef HAVE_INTTYPES_H
38 /* Only MS-DOS does not define `subprocesses'. */
41 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
46 /* Are local (unix) sockets supported? */
47 #if defined (HAVE_SYS_UN_H)
48 #if !defined (AF_LOCAL) && defined (AF_UNIX)
49 #define AF_LOCAL AF_UNIX
52 #define HAVE_LOCAL_SOCKETS
57 #include <sys/ioctl.h>
58 #if defined(HAVE_NET_IF_H)
60 #endif /* HAVE_NET_IF_H */
67 #include <netinet/in.h>
68 #include <arpa/nameser.h>
80 #endif /* subprocesses */
88 #include "character.h"
92 #include "termhooks.h"
96 #include "blockinput.h"
97 #include "dispextern.h"
98 #include "composite.h"
100 #include "sysselect.h"
101 #include "syssignal.h"
107 #if defined (USE_GTK) || defined (HAVE_GCONF)
108 #include "xgselect.h"
109 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
114 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
115 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
116 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
117 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
118 Lisp_Object QCname
, QCtype
;
120 /* Non-zero if keyboard input is on hold, zero otherwise. */
122 static int kbd_is_on_hold
;
124 /* Nonzero means don't run process sentinels. This is used
126 int inhibit_sentinels
;
130 Lisp_Object Qprocessp
;
131 static Lisp_Object Qrun
, Qstop
, Qsignal
;
132 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
134 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
135 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
137 static Lisp_Object Qipv6
;
139 static Lisp_Object QCport
, QCprocess
;
141 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
142 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
143 static Lisp_Object QCbuffer
, QChost
, QCservice
;
144 static Lisp_Object QClocal
, QCremote
, QCcoding
;
145 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
146 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
147 static Lisp_Object Qlast_nonmenu_event
;
148 /* QCfamily is declared and initialized in xfaces.c,
149 QCfilter in keyboard.c. */
150 extern Lisp_Object QCfamily
, QCfilter
;
152 /* Qexit is declared and initialized in eval.c. */
154 /* QCfamily is defined in xfaces.c. */
155 extern Lisp_Object QCfamily
;
156 /* QCfilter is defined in keyboard.c. */
157 extern Lisp_Object QCfilter
;
159 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
160 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
161 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
162 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
168 /* Number of events of change of status of a process. */
169 static int process_tick
;
170 /* Number of events for which the user or sentinel has been notified. */
171 static int update_tick
;
173 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
175 /* Only W32 has this, it really means that select can't take write mask. */
176 #ifdef BROKEN_NON_BLOCKING_CONNECT
177 #undef NON_BLOCKING_CONNECT
178 #define SELECT_CANT_DO_WRITE_MASK
180 #ifndef NON_BLOCKING_CONNECT
182 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
183 #if defined (O_NONBLOCK) || defined (O_NDELAY)
184 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
185 #define NON_BLOCKING_CONNECT
186 #endif /* EWOULDBLOCK || EINPROGRESS */
187 #endif /* O_NONBLOCK || O_NDELAY */
188 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
189 #endif /* HAVE_SELECT */
190 #endif /* NON_BLOCKING_CONNECT */
191 #endif /* BROKEN_NON_BLOCKING_CONNECT */
193 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
194 this system. We need to read full packets, so we need a
195 "non-destructive" select. So we require either native select,
196 or emulation of select using FIONREAD. */
198 #ifdef BROKEN_DATAGRAM_SOCKETS
199 #undef DATAGRAM_SOCKETS
201 #ifndef DATAGRAM_SOCKETS
202 #if defined (HAVE_SELECT) || defined (FIONREAD)
203 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
204 #define DATAGRAM_SOCKETS
205 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
206 #endif /* HAVE_SELECT || FIONREAD */
207 #endif /* DATAGRAM_SOCKETS */
208 #endif /* BROKEN_DATAGRAM_SOCKETS */
210 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
211 # define HAVE_SEQPACKET
214 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
215 #ifdef EMACS_HAS_USECS
216 #define ADAPTIVE_READ_BUFFERING
220 #ifdef ADAPTIVE_READ_BUFFERING
221 #define READ_OUTPUT_DELAY_INCREMENT 10000
222 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
223 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
225 /* Number of processes which have a non-zero read_output_delay,
226 and therefore might be delayed for adaptive read buffering. */
228 static int process_output_delay_count
;
230 /* Non-zero if any process has non-nil read_output_skip. */
232 static int process_output_skip
;
235 #define process_output_delay_count 0
238 static Lisp_Object
Fget_process (Lisp_Object
);
239 static void create_process (Lisp_Object
, char **, Lisp_Object
);
241 static int keyboard_bit_set (SELECT_TYPE
*);
243 static void deactivate_process (Lisp_Object
);
244 static void status_notify (struct Lisp_Process
*);
245 static int read_process_output (Lisp_Object
, int);
246 static void create_pty (Lisp_Object
);
248 /* If we support a window system, turn on the code to poll periodically
249 to detect C-g. It isn't actually used when doing interrupt input. */
250 #ifdef HAVE_WINDOW_SYSTEM
251 #define POLL_FOR_INPUT
254 static Lisp_Object
get_process (register Lisp_Object name
);
255 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
257 /* Mask of bits indicating the descriptors that we wait for input on. */
259 static SELECT_TYPE input_wait_mask
;
261 /* Mask that excludes keyboard input descriptor(s). */
263 static SELECT_TYPE non_keyboard_wait_mask
;
265 /* Mask that excludes process input descriptor(s). */
267 static SELECT_TYPE non_process_wait_mask
;
269 /* Mask for selecting for write. */
271 static SELECT_TYPE write_mask
;
273 #ifdef NON_BLOCKING_CONNECT
274 /* Mask of bits indicating the descriptors that we wait for connect to
275 complete on. Once they complete, they are removed from this mask
276 and added to the input_wait_mask and non_keyboard_wait_mask. */
278 static SELECT_TYPE connect_wait_mask
;
280 /* Number of bits set in connect_wait_mask. */
281 static int num_pending_connects
;
282 #endif /* NON_BLOCKING_CONNECT */
284 /* The largest descriptor currently in use for a process object. */
285 static int max_process_desc
;
287 /* The largest descriptor currently in use for input. */
288 static int max_input_desc
;
290 /* Indexed by descriptor, gives the process (if any) for that descriptor */
291 static Lisp_Object chan_process
[MAXDESC
];
293 /* Alist of elements (NAME . PROCESS) */
294 static Lisp_Object Vprocess_alist
;
296 /* Buffered-ahead input char from process, indexed by channel.
297 -1 means empty (no char is buffered).
298 Used on sys V where the only way to tell if there is any
299 output from the process is to read at least one char.
300 Always -1 on systems that support FIONREAD. */
302 static int proc_buffered_char
[MAXDESC
];
304 /* Table of `struct coding-system' for each process. */
305 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
306 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
308 #ifdef DATAGRAM_SOCKETS
309 /* Table of `partner address' for datagram sockets. */
310 static struct sockaddr_and_len
{
313 } datagram_address
[MAXDESC
];
314 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
315 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
317 #define DATAGRAM_CHAN_P(chan) (0)
318 #define DATAGRAM_CONN_P(proc) (0)
321 /* Maximum number of bytes to send to a pty without an eof. */
322 static int pty_max_bytes
;
326 static struct fd_callback_data
332 int condition
; /* mask of the defines above. */
333 } fd_callback_info
[MAXDESC
];
336 /* Add a file descriptor FD to be monitored for when read is possible.
337 When read is possible, call FUNC with argument DATA. */
340 add_read_fd (int fd
, fd_callback func
, void *data
)
342 xassert (fd
< MAXDESC
);
343 add_keyboard_wait_descriptor (fd
);
345 fd_callback_info
[fd
].func
= func
;
346 fd_callback_info
[fd
].data
= data
;
347 fd_callback_info
[fd
].condition
|= FOR_READ
;
350 /* Stop monitoring file descriptor FD for when read is possible. */
353 delete_read_fd (int fd
)
355 xassert (fd
< MAXDESC
);
356 delete_keyboard_wait_descriptor (fd
);
358 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
359 if (fd_callback_info
[fd
].condition
== 0)
361 fd_callback_info
[fd
].func
= 0;
362 fd_callback_info
[fd
].data
= 0;
366 /* Add a file descriptor FD to be monitored for when write is possible.
367 When write is possible, call FUNC with argument DATA. */
370 add_write_fd (int fd
, fd_callback func
, void *data
)
372 xassert (fd
< MAXDESC
);
373 FD_SET (fd
, &write_mask
);
374 if (fd
> max_input_desc
)
377 fd_callback_info
[fd
].func
= func
;
378 fd_callback_info
[fd
].data
= data
;
379 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
382 /* Stop monitoring file descriptor FD for when write is possible. */
385 delete_write_fd (int fd
)
387 int lim
= max_input_desc
;
389 xassert (fd
< MAXDESC
);
390 FD_CLR (fd
, &write_mask
);
391 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
392 if (fd_callback_info
[fd
].condition
== 0)
394 fd_callback_info
[fd
].func
= 0;
395 fd_callback_info
[fd
].data
= 0;
397 if (fd
== max_input_desc
)
398 for (fd
= lim
; fd
>= 0; fd
--)
399 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
409 /* Compute the Lisp form of the process status, p->status, from
410 the numeric status that was returned by `wait'. */
412 static Lisp_Object
status_convert (int);
415 update_status (struct Lisp_Process
*p
)
417 eassert (p
->raw_status_new
);
418 p
->status
= status_convert (p
->raw_status
);
419 p
->raw_status_new
= 0;
422 /* Convert a process status word in Unix format to
423 the list that we use internally. */
426 status_convert (int w
)
429 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
430 else if (WIFEXITED (w
))
431 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
432 WCOREDUMP (w
) ? Qt
: Qnil
));
433 else if (WIFSIGNALED (w
))
434 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
435 WCOREDUMP (w
) ? Qt
: Qnil
));
440 /* Given a status-list, extract the three pieces of information
441 and store them individually through the three pointers. */
444 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
458 *code
= XFASTINT (XCAR (tem
));
460 *coredump
= !NILP (tem
);
464 /* Return a string describing a process status list. */
467 status_message (struct Lisp_Process
*p
)
469 Lisp_Object status
= p
->status
;
472 Lisp_Object string
, string2
;
474 decode_status (status
, &symbol
, &code
, &coredump
);
476 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
479 synchronize_system_messages_locale ();
480 signame
= strsignal (code
);
482 string
= build_string ("unknown");
487 string
= make_unibyte_string (signame
, strlen (signame
));
488 if (! NILP (Vlocale_coding_system
))
489 string
= (code_convert_string_norecord
490 (string
, Vlocale_coding_system
, 0));
491 c1
= STRING_CHAR (SDATA (string
));
494 Faset (string
, make_number (0), make_number (c2
));
496 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
497 return concat2 (string
, string2
);
499 else if (EQ (symbol
, Qexit
))
502 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
504 return build_string ("finished\n");
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
507 return concat3 (build_string ("exited abnormally with code "),
510 else if (EQ (symbol
, Qfailed
))
512 string
= Fnumber_to_string (make_number (code
));
513 string2
= build_string ("\n");
514 return concat3 (build_string ("failed with code "),
518 return Fcopy_sequence (Fsymbol_name (symbol
));
523 /* The file name of the pty opened by allocate_pty. */
524 static char pty_name
[24];
526 /* Open an available pty, returning a file descriptor.
527 Return -1 on failure.
528 The file name of the terminal corresponding to the pty
529 is left in the variable pty_name. */
540 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
541 for (i
= 0; i
< 16; i
++)
544 #ifdef PTY_NAME_SPRINTF
547 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
548 #endif /* no PTY_NAME_SPRINTF */
552 #else /* no PTY_OPEN */
554 { /* Some systems name their pseudoterminals so that there are gaps in
555 the usual sequence - for example, on HP9000/S700 systems, there
556 are no pseudoterminals with names ending in 'f'. So we wait for
557 three failures in a row before deciding that we've reached the
559 int failed_count
= 0;
562 if (stat (pty_name
, &stb
) < 0)
565 if (failed_count
>= 3)
572 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
574 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
577 #endif /* no PTY_OPEN */
581 /* check to make certain that both sides are available
582 this avoids a nasty yet stupid bug in rlogins */
583 #ifdef PTY_TTY_NAME_SPRINTF
586 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
587 #endif /* no PTY_TTY_NAME_SPRINTF */
588 if (access (pty_name
, 6) != 0)
603 #endif /* HAVE_PTYS */
606 make_process (Lisp_Object name
)
608 register Lisp_Object val
, tem
, name1
;
609 register struct Lisp_Process
*p
;
613 p
= allocate_process ();
621 p
->raw_status_new
= 0;
623 p
->mark
= Fmake_marker ();
624 p
->kill_without_query
= 0;
626 #ifdef ADAPTIVE_READ_BUFFERING
627 p
->adaptive_read_buffering
= 0;
628 p
->read_output_delay
= 0;
629 p
->read_output_skip
= 0;
633 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
634 p
->gnutls_log_level
= 0;
638 /* If name is already in use, modify it until it is unused. */
643 tem
= Fget_process (name1
);
644 if (NILP (tem
)) break;
645 sprintf (suffix
, "<%d>", i
);
646 name1
= concat2 (name
, build_string (suffix
));
650 XSETPROCESS (val
, p
);
651 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
656 remove_process (register Lisp_Object proc
)
658 register Lisp_Object pair
;
660 pair
= Frassq (proc
, Vprocess_alist
);
661 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
663 deactivate_process (proc
);
667 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
668 doc
: /* Return t if OBJECT is a process. */)
671 return PROCESSP (object
) ? Qt
: Qnil
;
674 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
675 doc
: /* Return the process named NAME, or nil if there is none. */)
676 (register Lisp_Object name
)
681 return Fcdr (Fassoc (name
, Vprocess_alist
));
684 /* This is how commands for the user decode process arguments. It
685 accepts a process, a process name, a buffer, a buffer name, or nil.
686 Buffers denote the first process in the buffer, and nil denotes the
690 get_process (register Lisp_Object name
)
692 register Lisp_Object proc
, obj
;
695 obj
= Fget_process (name
);
697 obj
= Fget_buffer (name
);
699 error ("Process %s does not exist", SDATA (name
));
701 else if (NILP (name
))
702 obj
= Fcurrent_buffer ();
706 /* Now obj should be either a buffer object or a process object.
710 proc
= Fget_buffer_process (obj
);
712 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
724 /* Fdelete_process promises to immediately forget about the process, but in
725 reality, Emacs needs to remember those processes until they have been
726 treated by sigchld_handler; otherwise this handler would consider the
727 process as being synchronous and say that the synchronous process is
729 static Lisp_Object deleted_pid_list
;
732 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
733 doc
: /* Delete PROCESS: kill it and forget about it immediately.
734 PROCESS may be a process, a buffer, the name of a process or buffer, or
735 nil, indicating the current buffer's process. */)
736 (register Lisp_Object process
)
738 register struct Lisp_Process
*p
;
740 process
= get_process (process
);
741 p
= XPROCESS (process
);
743 p
->raw_status_new
= 0;
744 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
746 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
747 p
->tick
= ++process_tick
;
749 redisplay_preserve_echo_area (13);
751 else if (p
->infd
>= 0)
755 /* Assignment to EMACS_INT stops GCC whining about limited range
757 EMACS_INT pid
= p
->pid
;
759 /* No problem storing the pid here, as it is still in Vprocess_alist. */
760 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
761 /* GC treated elements set to nil. */
762 Fdelq (Qnil
, deleted_pid_list
));
763 /* If the process has already signaled, remove it from the list. */
764 if (p
->raw_status_new
)
767 if (CONSP (p
->status
))
768 symbol
= XCAR (p
->status
);
769 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
771 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
775 Fkill_process (process
, Qnil
);
776 /* Do this now, since remove_process will make sigchld_handler do nothing. */
778 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
779 p
->tick
= ++process_tick
;
781 redisplay_preserve_echo_area (13);
784 remove_process (process
);
788 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
789 doc
: /* Return the status of PROCESS.
790 The returned value is one of the following symbols:
791 run -- for a process that is running.
792 stop -- for a process stopped but continuable.
793 exit -- for a process that has exited.
794 signal -- for a process that has got a fatal signal.
795 open -- for a network stream connection that is open.
796 listen -- for a network stream server that is listening.
797 closed -- for a network stream connection that is closed.
798 connect -- when waiting for a non-blocking connection to complete.
799 failed -- when a non-blocking connection has failed.
800 nil -- if arg is a process name and no such process exists.
801 PROCESS may be a process, a buffer, the name of a process, or
802 nil, indicating the current buffer's process. */)
803 (register Lisp_Object process
)
805 register struct Lisp_Process
*p
;
806 register Lisp_Object status
;
808 if (STRINGP (process
))
809 process
= Fget_process (process
);
811 process
= get_process (process
);
816 p
= XPROCESS (process
);
817 if (p
->raw_status_new
)
821 status
= XCAR (status
);
822 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
824 if (EQ (status
, Qexit
))
826 else if (EQ (p
->command
, Qt
))
828 else if (EQ (status
, Qrun
))
834 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
836 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
837 If PROCESS has not yet exited or died, return 0. */)
838 (register Lisp_Object process
)
840 CHECK_PROCESS (process
);
841 if (XPROCESS (process
)->raw_status_new
)
842 update_status (XPROCESS (process
));
843 if (CONSP (XPROCESS (process
)->status
))
844 return XCAR (XCDR (XPROCESS (process
)->status
));
845 return make_number (0);
848 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
849 doc
: /* Return the process id of PROCESS.
850 This is the pid of the external process which PROCESS uses or talks to.
851 For a network connection, this value is nil. */)
852 (register Lisp_Object process
)
854 /* Assignment to EMACS_INT stops GCC whining about limited range of
858 CHECK_PROCESS (process
);
859 pid
= XPROCESS (process
)->pid
;
860 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
863 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
864 doc
: /* Return the name of PROCESS, as a string.
865 This is the name of the program invoked in PROCESS,
866 possibly modified to make it unique among process names. */)
867 (register Lisp_Object process
)
869 CHECK_PROCESS (process
);
870 return XPROCESS (process
)->name
;
873 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
874 doc
: /* Return the command that was executed to start PROCESS.
875 This is a list of strings, the first string being the program executed
876 and the rest of the strings being the arguments given to it.
877 For a network or serial process, this is nil (process is running) or t
878 \(process is stopped). */)
879 (register Lisp_Object process
)
881 CHECK_PROCESS (process
);
882 return XPROCESS (process
)->command
;
885 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
886 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
887 This is the terminal that the process itself reads and writes on,
888 not the name of the pty that Emacs uses to talk with that terminal. */)
889 (register Lisp_Object process
)
891 CHECK_PROCESS (process
);
892 return XPROCESS (process
)->tty_name
;
895 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
897 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
898 (register Lisp_Object process
, Lisp_Object buffer
)
900 struct Lisp_Process
*p
;
902 CHECK_PROCESS (process
);
904 CHECK_BUFFER (buffer
);
905 p
= XPROCESS (process
);
907 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
908 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
909 setup_process_coding_systems (process
);
913 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
915 doc
: /* Return the buffer PROCESS is associated with.
916 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
917 (register Lisp_Object process
)
919 CHECK_PROCESS (process
);
920 return XPROCESS (process
)->buffer
;
923 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
925 doc
: /* Return the marker for the end of the last output from PROCESS. */)
926 (register Lisp_Object process
)
928 CHECK_PROCESS (process
);
929 return XPROCESS (process
)->mark
;
932 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
934 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
935 A value of t means stop accepting output from the process.
937 When a process has a filter, its buffer is not used for output.
938 Instead, each time it does output, the entire string of output is
939 passed to the filter.
941 The filter gets two arguments: the process and the string of output.
942 The string argument is normally a multibyte string, except:
943 - if the process' input coding system is no-conversion or raw-text,
944 it is a unibyte string (the non-converted input), or else
945 - if `default-enable-multibyte-characters' is nil, it is a unibyte
946 string (the result of converting the decoded input multibyte
947 string to unibyte with `string-make-unibyte'). */)
948 (register Lisp_Object process
, Lisp_Object filter
)
950 struct Lisp_Process
*p
;
952 CHECK_PROCESS (process
);
953 p
= XPROCESS (process
);
955 /* Don't signal an error if the process' input file descriptor
956 is closed. This could make debugging Lisp more difficult,
957 for example when doing something like
959 (setq process (start-process ...))
961 (set-process-filter process ...) */
965 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
967 FD_CLR (p
->infd
, &input_wait_mask
);
968 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
970 else if (EQ (p
->filter
, Qt
)
971 /* Network or serial process not stopped: */
972 && !EQ (p
->command
, Qt
))
974 FD_SET (p
->infd
, &input_wait_mask
);
975 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
980 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
981 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
982 setup_process_coding_systems (process
);
986 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
988 doc
: /* Returns the filter function of PROCESS; nil if none.
989 See `set-process-filter' for more info on filter functions. */)
990 (register Lisp_Object process
)
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->filter
;
996 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
998 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
999 The sentinel is called as a function when the process changes state.
1000 It gets two arguments: the process, and a string describing the change. */)
1001 (register Lisp_Object process
, Lisp_Object sentinel
)
1003 struct Lisp_Process
*p
;
1005 CHECK_PROCESS (process
);
1006 p
= XPROCESS (process
);
1008 p
->sentinel
= sentinel
;
1009 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1010 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1014 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1016 doc
: /* Return the sentinel of PROCESS; nil if none.
1017 See `set-process-sentinel' for more info on sentinels. */)
1018 (register Lisp_Object process
)
1020 CHECK_PROCESS (process
);
1021 return XPROCESS (process
)->sentinel
;
1024 DEFUN ("set-process-window-size", Fset_process_window_size
,
1025 Sset_process_window_size
, 3, 3, 0,
1026 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1027 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1029 CHECK_PROCESS (process
);
1030 CHECK_NATNUM (height
);
1031 CHECK_NATNUM (width
);
1033 if (XPROCESS (process
)->infd
< 0
1034 || set_window_size (XPROCESS (process
)->infd
,
1035 XINT (height
), XINT (width
)) <= 0)
1041 DEFUN ("set-process-inherit-coding-system-flag",
1042 Fset_process_inherit_coding_system_flag
,
1043 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1044 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1045 If the second argument FLAG is non-nil, then the variable
1046 `buffer-file-coding-system' of the buffer associated with PROCESS
1047 will be bound to the value of the coding system used to decode
1050 This is useful when the coding system specified for the process buffer
1051 leaves either the character code conversion or the end-of-line conversion
1052 unspecified, or if the coding system used to decode the process output
1053 is more appropriate for saving the process buffer.
1055 Binding the variable `inherit-process-coding-system' to non-nil before
1056 starting the process is an alternative way of setting the inherit flag
1057 for the process which will run. */)
1058 (register Lisp_Object process
, Lisp_Object flag
)
1060 CHECK_PROCESS (process
);
1061 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1065 DEFUN ("set-process-query-on-exit-flag",
1066 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1068 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1069 If the second argument FLAG is non-nil, Emacs will query the user before
1070 exiting or killing a buffer if PROCESS is running. */)
1071 (register Lisp_Object process
, Lisp_Object flag
)
1073 CHECK_PROCESS (process
);
1074 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1078 DEFUN ("process-query-on-exit-flag",
1079 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1081 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1082 (register Lisp_Object process
)
1084 CHECK_PROCESS (process
);
1085 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1088 #ifdef DATAGRAM_SOCKETS
1089 static Lisp_Object
Fprocess_datagram_address (Lisp_Object
);
1092 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1094 doc
: /* Return the contact info of PROCESS; t for a real child.
1095 For a network or serial connection, the value depends on the optional
1096 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1097 SERVICE) for a network connection or (PORT SPEED) for a serial
1098 connection. If KEY is t, the complete contact information for the
1099 connection is returned, else the specific value for the keyword KEY is
1100 returned. See `make-network-process' or `make-serial-process' for a
1101 list of keywords. */)
1102 (register Lisp_Object process
, Lisp_Object key
)
1104 Lisp_Object contact
;
1106 CHECK_PROCESS (process
);
1107 contact
= XPROCESS (process
)->childp
;
1109 #ifdef DATAGRAM_SOCKETS
1110 if (DATAGRAM_CONN_P (process
)
1111 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1112 contact
= Fplist_put (contact
, QCremote
,
1113 Fprocess_datagram_address (process
));
1116 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1118 if (NILP (key
) && NETCONN_P (process
))
1119 return Fcons (Fplist_get (contact
, QChost
),
1120 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1121 if (NILP (key
) && SERIALCONN_P (process
))
1122 return Fcons (Fplist_get (contact
, QCport
),
1123 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1124 return Fplist_get (contact
, key
);
1127 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1129 doc
: /* Return the plist of PROCESS. */)
1130 (register Lisp_Object process
)
1132 CHECK_PROCESS (process
);
1133 return XPROCESS (process
)->plist
;
1136 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1138 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1139 (register Lisp_Object process
, Lisp_Object plist
)
1141 CHECK_PROCESS (process
);
1144 XPROCESS (process
)->plist
= plist
;
1148 #if 0 /* Turned off because we don't currently record this info
1149 in the process. Perhaps add it. */
1150 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1151 doc
: /* Return the connection type of PROCESS.
1152 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1153 a socket connection. */)
1154 (Lisp_Object process
)
1156 return XPROCESS (process
)->type
;
1160 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1161 doc
: /* Return the connection type of PROCESS.
1162 The value is either the symbol `real', `network', or `serial'.
1163 PROCESS may be a process, a buffer, the name of a process or buffer, or
1164 nil, indicating the current buffer's process. */)
1165 (Lisp_Object process
)
1168 proc
= get_process (process
);
1169 return XPROCESS (proc
)->type
;
1172 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1174 doc
: /* Convert network ADDRESS from internal format to a string.
1175 A 4 or 5 element vector represents an IPv4 address (with port number).
1176 An 8 or 9 element vector represents an IPv6 address (with port number).
1177 If optional second argument OMIT-PORT is non-nil, don't include a port
1178 number in the string, even when present in ADDRESS.
1179 Returns nil if format of ADDRESS is invalid. */)
1180 (Lisp_Object address
, Lisp_Object omit_port
)
1185 if (STRINGP (address
)) /* AF_LOCAL */
1188 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1190 register struct Lisp_Vector
*p
= XVECTOR (address
);
1191 EMACS_UINT size
= p
->header
.size
;
1192 Lisp_Object args
[10];
1195 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1197 args
[0] = build_string ("%d.%d.%d.%d");
1202 args
[0] = build_string ("%d.%d.%d.%d:%d");
1205 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1207 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1212 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1218 for (i
= 0; i
< nargs
; i
++)
1220 EMACS_INT element
= XINT (p
->contents
[i
]);
1222 if (element
< 0 || element
> 65535)
1225 if (nargs
<= 5 /* IPv4 */
1226 && i
< 4 /* host, not port */
1230 args
[i
+1] = p
->contents
[i
];
1233 return Fformat (nargs
+1, args
);
1236 if (CONSP (address
))
1238 Lisp_Object args
[2];
1239 args
[0] = build_string ("<Family %d>");
1240 args
[1] = Fcar (address
);
1241 return Fformat (2, args
);
1247 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1248 doc
: /* Return a list of all processes. */)
1251 return Fmapcar (Qcdr
, Vprocess_alist
);
1254 /* Starting asynchronous inferior processes. */
1256 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1258 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1259 doc
: /* Start a program in a subprocess. Return the process object for it.
1260 NAME is name for process. It is modified if necessary to make it unique.
1261 BUFFER is the buffer (or buffer name) to associate with the process.
1263 Process output (both standard output and standard error streams) goes
1264 at end of BUFFER, unless you specify an output stream or filter
1265 function to handle the output. BUFFER may also be nil, meaning that
1266 this process is not associated with any buffer.
1268 PROGRAM is the program file name. It is searched for in `exec-path'
1269 (which see). If nil, just associate a pty with the buffer. Remaining
1270 arguments are strings to give program as arguments.
1272 If you want to separate standard output from standard error, invoke
1273 the command through a shell and redirect one of them using the shell
1276 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1277 (size_t nargs
, register Lisp_Object
*args
)
1279 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1280 register unsigned char **new_argv
;
1282 int count
= SPECPDL_INDEX ();
1286 buffer
= Fget_buffer_create (buffer
);
1288 /* Make sure that the child will be able to chdir to the current
1289 buffer's current directory, or its unhandled equivalent. We
1290 can't just have the child check for an error when it does the
1291 chdir, since it's in a vfork.
1293 We have to GCPRO around this because Fexpand_file_name and
1294 Funhandled_file_name_directory might call a file name handling
1295 function. The argument list is protected by the caller, so all
1296 we really have to worry about is buffer. */
1298 struct gcpro gcpro1
, gcpro2
;
1300 current_dir
= BVAR (current_buffer
, directory
);
1302 GCPRO2 (buffer
, current_dir
);
1304 current_dir
= Funhandled_file_name_directory (current_dir
);
1305 if (NILP (current_dir
))
1306 /* If the file name handler says that current_dir is unreachable, use
1307 a sensible default. */
1308 current_dir
= build_string ("~/");
1309 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1310 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1311 report_file_error ("Setting current directory",
1312 Fcons (BVAR (current_buffer
, directory
), Qnil
));
1318 CHECK_STRING (name
);
1322 if (!NILP (program
))
1323 CHECK_STRING (program
);
1325 proc
= make_process (name
);
1326 /* If an error occurs and we can't start the process, we want to
1327 remove it from the process list. This means that each error
1328 check in create_process doesn't need to call remove_process
1329 itself; it's all taken care of here. */
1330 record_unwind_protect (start_process_unwind
, proc
);
1332 XPROCESS (proc
)->childp
= Qt
;
1333 XPROCESS (proc
)->plist
= Qnil
;
1334 XPROCESS (proc
)->type
= Qreal
;
1335 XPROCESS (proc
)->buffer
= buffer
;
1336 XPROCESS (proc
)->sentinel
= Qnil
;
1337 XPROCESS (proc
)->filter
= Qnil
;
1338 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1341 /* AKA GNUTLS_INITSTAGE(proc). */
1342 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1343 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1346 #ifdef ADAPTIVE_READ_BUFFERING
1347 XPROCESS (proc
)->adaptive_read_buffering
1348 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1349 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1352 /* Make the process marker point into the process buffer (if any). */
1353 if (BUFFERP (buffer
))
1354 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1355 BUF_ZV (XBUFFER (buffer
)),
1356 BUF_ZV_BYTE (XBUFFER (buffer
)));
1359 /* Decide coding systems for communicating with the process. Here
1360 we don't setup the structure coding_system nor pay attention to
1361 unibyte mode. They are done in create_process. */
1363 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1364 Lisp_Object coding_systems
= Qt
;
1365 Lisp_Object val
, *args2
;
1366 struct gcpro gcpro1
, gcpro2
;
1368 val
= Vcoding_system_for_read
;
1371 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1372 args2
[0] = Qstart_process
;
1373 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1374 GCPRO2 (proc
, current_dir
);
1375 if (!NILP (program
))
1376 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1378 if (CONSP (coding_systems
))
1379 val
= XCAR (coding_systems
);
1380 else if (CONSP (Vdefault_process_coding_system
))
1381 val
= XCAR (Vdefault_process_coding_system
);
1383 XPROCESS (proc
)->decode_coding_system
= val
;
1385 val
= Vcoding_system_for_write
;
1388 if (EQ (coding_systems
, Qt
))
1390 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1391 args2
[0] = Qstart_process
;
1392 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1393 GCPRO2 (proc
, current_dir
);
1394 if (!NILP (program
))
1395 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1398 if (CONSP (coding_systems
))
1399 val
= XCDR (coding_systems
);
1400 else if (CONSP (Vdefault_process_coding_system
))
1401 val
= XCDR (Vdefault_process_coding_system
);
1403 XPROCESS (proc
)->encode_coding_system
= val
;
1404 /* Note: At this momemnt, the above coding system may leave
1405 text-conversion or eol-conversion unspecified. They will be
1406 decided after we read output from the process and decode it by
1407 some coding system, or just before we actually send a text to
1412 XPROCESS (proc
)->decoding_buf
= empty_unibyte_string
;
1413 XPROCESS (proc
)->decoding_carryover
= 0;
1414 XPROCESS (proc
)->encoding_buf
= empty_unibyte_string
;
1416 XPROCESS (proc
)->inherit_coding_system_flag
1417 = !(NILP (buffer
) || !inherit_process_coding_system
);
1419 if (!NILP (program
))
1421 /* If program file name is not absolute, search our path for it.
1422 Put the name we will really use in TEM. */
1423 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1424 && !(SCHARS (program
) > 1
1425 && IS_DEVICE_SEP (SREF (program
, 1))))
1427 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1430 GCPRO4 (name
, program
, buffer
, current_dir
);
1431 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1434 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1435 tem
= Fexpand_file_name (tem
, Qnil
);
1439 if (!NILP (Ffile_directory_p (program
)))
1440 error ("Specified program for new process is a directory");
1444 /* If program file name starts with /: for quoting a magic name,
1446 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1447 && SREF (tem
, 1) == ':')
1448 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1451 Lisp_Object arg_encoding
= Qnil
;
1452 struct gcpro gcpro1
;
1455 /* Encode the file name and put it in NEW_ARGV.
1456 That's where the child will use it to execute the program. */
1457 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1459 /* Here we encode arguments by the coding system used for sending
1460 data to the process. We don't support using different coding
1461 systems for encoding arguments and for encoding data sent to the
1464 for (i
= 3; i
< nargs
; i
++)
1466 tem
= Fcons (args
[i
], tem
);
1467 CHECK_STRING (XCAR (tem
));
1468 if (STRING_MULTIBYTE (XCAR (tem
)))
1470 if (NILP (arg_encoding
))
1471 arg_encoding
= (complement_process_encoding_system
1472 (XPROCESS (proc
)->encode_coding_system
));
1474 code_convert_string_norecord
1475 (XCAR (tem
), arg_encoding
, 1));
1482 /* Now that everything is encoded we can collect the strings into
1484 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1485 new_argv
[nargs
- 2] = 0;
1487 for (i
= nargs
- 2; i
-- != 0; )
1489 new_argv
[i
] = SDATA (XCAR (tem
));
1493 create_process (proc
, (char **) new_argv
, current_dir
);
1498 return unbind_to (count
, proc
);
1501 /* This function is the unwind_protect form for Fstart_process. If
1502 PROC doesn't have its pid set, then we know someone has signaled
1503 an error and the process wasn't started successfully, so we should
1504 remove it from the process list. */
1506 start_process_unwind (Lisp_Object proc
)
1508 if (!PROCESSP (proc
))
1511 /* Was PROC started successfully? */
1512 if (XPROCESS (proc
)->pid
== -1)
1513 remove_process (proc
);
1519 create_process_1 (struct atimer
*timer
)
1521 /* Nothing to do. */
1526 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1528 int inchannel
, outchannel
;
1531 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1532 int wait_child_setup
[2];
1536 struct sigaction sigint_action
;
1537 struct sigaction sigquit_action
;
1538 struct sigaction sigpipe_action
;
1540 struct sigaction sighup_action
;
1542 /* Use volatile to protect variables from being clobbered by longjmp. */
1543 volatile int forkin
, forkout
;
1544 volatile int pty_flag
= 0;
1546 extern char **environ
;
1549 inchannel
= outchannel
= -1;
1552 if (!NILP (Vprocess_connection_type
))
1553 outchannel
= inchannel
= allocate_pty ();
1557 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1558 /* On most USG systems it does not work to open the pty's tty here,
1559 then close it and reopen it in the child. */
1561 /* Don't let this terminal become our controlling terminal
1562 (in case we don't have one). */
1563 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1565 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1568 report_file_error ("Opening pty", Qnil
);
1570 forkin
= forkout
= -1;
1571 #endif /* not USG, or USG_SUBTTY_WORKS */
1575 #endif /* HAVE_PTYS */
1580 report_file_error ("Creating pipe", Qnil
);
1586 emacs_close (inchannel
);
1587 emacs_close (forkout
);
1588 report_file_error ("Creating pipe", Qnil
);
1594 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1598 tem
= pipe (wait_child_setup
);
1600 report_file_error ("Creating pipe", Qnil
);
1601 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1603 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1606 emacs_close (wait_child_setup
[0]);
1607 emacs_close (wait_child_setup
[1]);
1608 report_file_error ("Setting file descriptor flags", Qnil
);
1614 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1615 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1618 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1619 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1623 /* Record this as an active process, with its channels.
1624 As a result, child_setup will close Emacs's side of the pipes. */
1625 chan_process
[inchannel
] = process
;
1626 XPROCESS (process
)->infd
= inchannel
;
1627 XPROCESS (process
)->outfd
= outchannel
;
1629 /* Previously we recorded the tty descriptor used in the subprocess.
1630 It was only used for getting the foreground tty process, so now
1631 we just reopen the device (see emacs_get_tty_pgrp) as this is
1632 more portable (see USG_SUBTTY_WORKS above). */
1634 XPROCESS (process
)->pty_flag
= pty_flag
;
1635 XPROCESS (process
)->status
= Qrun
;
1636 setup_process_coding_systems (process
);
1638 /* Delay interrupts until we have a chance to store
1639 the new fork's pid in its process structure */
1640 sigemptyset (&blocked
);
1642 sigaddset (&blocked
, SIGCHLD
);
1644 #ifdef HAVE_WORKING_VFORK
1645 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1646 this sets the parent's signal handlers as well as the child's.
1647 So delay all interrupts whose handlers the child might munge,
1648 and record the current handlers so they can be restored later. */
1649 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1650 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1651 sigaddset (&blocked
, SIGPIPE
); sigaction (SIGPIPE
, 0, &sigpipe_action
);
1653 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1655 #endif /* HAVE_WORKING_VFORK */
1656 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1658 FD_SET (inchannel
, &input_wait_mask
);
1659 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1660 if (inchannel
> max_process_desc
)
1661 max_process_desc
= inchannel
;
1663 /* Until we store the proper pid, enable sigchld_handler
1664 to recognize an unknown pid as standing for this process.
1665 It is very important not to let this `marker' value stay
1666 in the table after this function has returned; if it does
1667 it might cause call-process to hang and subsequent asynchronous
1668 processes to get their return values scrambled. */
1669 XPROCESS (process
)->pid
= -1;
1674 /* child_setup must clobber environ on systems with true vfork.
1675 Protect it from permanent change. */
1676 char **save_environ
= environ
;
1677 volatile Lisp_Object encoded_current_dir
= ENCODE_FILE (current_dir
);
1682 #endif /* not WINDOWSNT */
1684 int xforkin
= forkin
;
1685 int xforkout
= forkout
;
1687 #if 0 /* This was probably a mistake--it duplicates code later on,
1688 but fails to handle all the cases. */
1689 /* Make sure SIGCHLD is not blocked in the child. */
1690 sigsetmask (SIGEMPTYMASK
);
1693 /* Make the pty be the controlling terminal of the process. */
1695 /* First, disconnect its current controlling terminal. */
1697 /* We tried doing setsid only if pty_flag, but it caused
1698 process_set_signal to fail on SGI when using a pipe. */
1700 /* Make the pty's terminal the controlling terminal. */
1701 if (pty_flag
&& xforkin
>= 0)
1704 /* We ignore the return value
1705 because faith@cs.unc.edu says that is necessary on Linux. */
1706 ioctl (xforkin
, TIOCSCTTY
, 0);
1709 #else /* not HAVE_SETSID */
1711 /* It's very important to call setpgrp here and no time
1712 afterwards. Otherwise, we lose our controlling tty which
1713 is set when we open the pty. */
1716 #endif /* not HAVE_SETSID */
1717 #if defined (LDISC1)
1718 if (pty_flag
&& xforkin
>= 0)
1721 tcgetattr (xforkin
, &t
);
1723 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1724 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1727 #if defined (NTTYDISC) && defined (TIOCSETD)
1728 if (pty_flag
&& xforkin
>= 0)
1730 /* Use new line discipline. */
1731 int ldisc
= NTTYDISC
;
1732 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1737 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1738 can do TIOCSPGRP only to the process's controlling tty. */
1741 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1742 I can't test it since I don't have 4.3. */
1743 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1746 ioctl (j
, TIOCNOTTY
, 0);
1750 /* In order to get a controlling terminal on some versions
1751 of BSD, it is necessary to put the process in pgrp 0
1752 before it opens the terminal. */
1760 #endif /* TIOCNOTTY */
1762 #if !defined (DONT_REOPEN_PTY)
1763 /*** There is a suggestion that this ought to be a
1764 conditional on TIOCSPGRP,
1765 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1766 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1767 that system does seem to need this code, even though
1768 both HAVE_SETSID and TIOCSCTTY are defined. */
1769 /* Now close the pty (if we had it open) and reopen it.
1770 This makes the pty the controlling terminal of the subprocess. */
1774 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1777 emacs_close (xforkin
);
1778 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1782 emacs_write (1, "Couldn't open the pty terminal ", 31);
1783 emacs_write (1, pty_name
, strlen (pty_name
));
1784 emacs_write (1, "\n", 1);
1789 #endif /* not DONT_REOPEN_PTY */
1791 #ifdef SETUP_SLAVE_PTY
1796 #endif /* SETUP_SLAVE_PTY */
1798 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1799 Now reenable it in the child, so it will die when we want it to. */
1801 signal (SIGHUP
, SIG_DFL
);
1803 #endif /* HAVE_PTYS */
1805 signal (SIGINT
, SIG_DFL
);
1806 signal (SIGQUIT
, SIG_DFL
);
1807 /* GConf causes us to ignore SIGPIPE, make sure it is restored
1809 signal (SIGPIPE
, SIG_DFL
);
1811 /* Stop blocking signals in the child. */
1812 sigprocmask (SIG_SETMASK
, &procmask
, 0);
1815 child_setup_tty (xforkout
);
1817 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1818 new_argv
, 1, encoded_current_dir
);
1819 #else /* not WINDOWSNT */
1821 emacs_close (wait_child_setup
[0]);
1823 child_setup (xforkin
, xforkout
, xforkout
,
1824 new_argv
, 1, encoded_current_dir
);
1825 #endif /* not WINDOWSNT */
1827 environ
= save_environ
;
1832 /* This runs in the Emacs process. */
1836 emacs_close (forkin
);
1837 if (forkin
!= forkout
&& forkout
>= 0)
1838 emacs_close (forkout
);
1842 /* vfork succeeded. */
1843 XPROCESS (process
)->pid
= pid
;
1846 register_child (pid
, inchannel
);
1847 #endif /* WINDOWSNT */
1849 /* If the subfork execv fails, and it exits,
1850 this close hangs. I don't know why.
1851 So have an interrupt jar it loose. */
1853 struct atimer
*timer
;
1857 EMACS_SET_SECS_USECS (offset
, 1, 0);
1858 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
1861 emacs_close (forkin
);
1863 cancel_atimer (timer
);
1867 if (forkin
!= forkout
&& forkout
>= 0)
1868 emacs_close (forkout
);
1872 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1875 XPROCESS (process
)->tty_name
= Qnil
;
1877 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1878 /* Wait for child_setup to complete in case that vfork is
1879 actually defined as fork. The descriptor wait_child_setup[1]
1880 of a pipe is closed at the child side either by close-on-exec
1881 on successful execvp or the _exit call in child_setup. */
1885 emacs_close (wait_child_setup
[1]);
1886 emacs_read (wait_child_setup
[0], &dummy
, 1);
1887 emacs_close (wait_child_setup
[0]);
1892 /* Restore the signal state whether vfork succeeded or not.
1893 (We will signal an error, below, if it failed.) */
1894 #ifdef HAVE_WORKING_VFORK
1895 /* Restore the parent's signal handlers. */
1896 sigaction (SIGINT
, &sigint_action
, 0);
1897 sigaction (SIGQUIT
, &sigquit_action
, 0);
1898 sigaction (SIGPIPE
, &sigpipe_action
, 0);
1900 sigaction (SIGHUP
, &sighup_action
, 0);
1902 #endif /* HAVE_WORKING_VFORK */
1903 /* Stop blocking signals in the parent. */
1904 sigprocmask (SIG_SETMASK
, &procmask
, 0);
1906 /* Now generate the error if vfork failed. */
1908 report_file_error ("Doing vfork", Qnil
);
1912 create_pty (Lisp_Object process
)
1914 int inchannel
, outchannel
;
1917 inchannel
= outchannel
= -1;
1920 if (!NILP (Vprocess_connection_type
))
1921 outchannel
= inchannel
= allocate_pty ();
1925 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1926 /* On most USG systems it does not work to open the pty's tty here,
1927 then close it and reopen it in the child. */
1929 /* Don't let this terminal become our controlling terminal
1930 (in case we don't have one). */
1931 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1933 int forkout
= emacs_open (pty_name
, O_RDWR
, 0);
1936 report_file_error ("Opening pty", Qnil
);
1937 #if defined (DONT_REOPEN_PTY)
1938 /* In the case that vfork is defined as fork, the parent process
1939 (Emacs) may send some data before the child process completes
1940 tty options setup. So we setup tty before forking. */
1941 child_setup_tty (forkout
);
1942 #endif /* DONT_REOPEN_PTY */
1943 #endif /* not USG, or USG_SUBTTY_WORKS */
1946 #endif /* HAVE_PTYS */
1949 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1950 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1953 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1954 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1958 /* Record this as an active process, with its channels.
1959 As a result, child_setup will close Emacs's side of the pipes. */
1960 chan_process
[inchannel
] = process
;
1961 XPROCESS (process
)->infd
= inchannel
;
1962 XPROCESS (process
)->outfd
= outchannel
;
1964 /* Previously we recorded the tty descriptor used in the subprocess.
1965 It was only used for getting the foreground tty process, so now
1966 we just reopen the device (see emacs_get_tty_pgrp) as this is
1967 more portable (see USG_SUBTTY_WORKS above). */
1969 XPROCESS (process
)->pty_flag
= pty_flag
;
1970 XPROCESS (process
)->status
= Qrun
;
1971 setup_process_coding_systems (process
);
1973 FD_SET (inchannel
, &input_wait_mask
);
1974 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1975 if (inchannel
> max_process_desc
)
1976 max_process_desc
= inchannel
;
1978 XPROCESS (process
)->pid
= -2;
1981 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1984 XPROCESS (process
)->tty_name
= Qnil
;
1988 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1989 The address family of sa is not included in the result. */
1992 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1994 Lisp_Object address
;
1997 register struct Lisp_Vector
*p
;
1999 /* Workaround for a bug in getsockname on BSD: Names bound to
2000 sockets in the UNIX domain are inaccessible; getsockname returns
2001 a zero length name. */
2002 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2003 return empty_unibyte_string
;
2005 switch (sa
->sa_family
)
2009 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2010 len
= sizeof (sin
->sin_addr
) + 1;
2011 address
= Fmake_vector (make_number (len
), Qnil
);
2012 p
= XVECTOR (address
);
2013 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2014 cp
= (unsigned char *) &sin
->sin_addr
;
2020 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2021 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2022 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2023 address
= Fmake_vector (make_number (len
), Qnil
);
2024 p
= XVECTOR (address
);
2025 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2026 for (i
= 0; i
< len
; i
++)
2027 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2031 #ifdef HAVE_LOCAL_SOCKETS
2034 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2035 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2036 if (sockun
->sun_path
[i
] == 0)
2038 return make_unibyte_string (sockun
->sun_path
, i
);
2042 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2043 address
= Fcons (make_number (sa
->sa_family
),
2044 Fmake_vector (make_number (len
), Qnil
));
2045 p
= XVECTOR (XCDR (address
));
2046 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2052 p
->contents
[i
++] = make_number (*cp
++);
2058 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2061 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2063 register struct Lisp_Vector
*p
;
2065 if (VECTORP (address
))
2067 p
= XVECTOR (address
);
2068 if (p
->header
.size
== 5)
2071 return sizeof (struct sockaddr_in
);
2074 else if (p
->header
.size
== 9)
2076 *familyp
= AF_INET6
;
2077 return sizeof (struct sockaddr_in6
);
2081 #ifdef HAVE_LOCAL_SOCKETS
2082 else if (STRINGP (address
))
2084 *familyp
= AF_LOCAL
;
2085 return sizeof (struct sockaddr_un
);
2088 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2090 struct sockaddr
*sa
;
2091 *familyp
= XINT (XCAR (address
));
2092 p
= XVECTOR (XCDR (address
));
2093 return p
->header
.size
+ sizeof (sa
->sa_family
);
2098 /* Convert an address object (vector or string) to an internal sockaddr.
2100 The address format has been basically validated by
2101 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2102 it could have come from user data. So if FAMILY is not valid,
2103 we return after zeroing *SA. */
2106 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2108 register struct Lisp_Vector
*p
;
2109 register unsigned char *cp
= NULL
;
2112 memset (sa
, 0, len
);
2114 if (VECTORP (address
))
2116 p
= XVECTOR (address
);
2117 if (family
== AF_INET
)
2119 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2120 len
= sizeof (sin
->sin_addr
) + 1;
2121 i
= XINT (p
->contents
[--len
]);
2122 sin
->sin_port
= htons (i
);
2123 cp
= (unsigned char *)&sin
->sin_addr
;
2124 sa
->sa_family
= family
;
2127 else if (family
== AF_INET6
)
2129 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2130 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2131 len
= sizeof (sin6
->sin6_addr
) + 1;
2132 i
= XINT (p
->contents
[--len
]);
2133 sin6
->sin6_port
= htons (i
);
2134 for (i
= 0; i
< len
; i
++)
2135 if (INTEGERP (p
->contents
[i
]))
2137 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2140 sa
->sa_family
= family
;
2147 else if (STRINGP (address
))
2149 #ifdef HAVE_LOCAL_SOCKETS
2150 if (family
== AF_LOCAL
)
2152 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2153 cp
= SDATA (address
);
2154 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2155 sockun
->sun_path
[i
] = *cp
++;
2156 sa
->sa_family
= family
;
2163 p
= XVECTOR (XCDR (address
));
2164 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2167 for (i
= 0; i
< len
; i
++)
2168 if (INTEGERP (p
->contents
[i
]))
2169 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2172 #ifdef DATAGRAM_SOCKETS
2173 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2175 doc
: /* Get the current datagram address associated with PROCESS. */)
2176 (Lisp_Object process
)
2180 CHECK_PROCESS (process
);
2182 if (!DATAGRAM_CONN_P (process
))
2185 channel
= XPROCESS (process
)->infd
;
2186 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2187 datagram_address
[channel
].len
);
2190 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2192 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2193 Returns nil upon error setting address, ADDRESS otherwise. */)
2194 (Lisp_Object process
, Lisp_Object address
)
2199 CHECK_PROCESS (process
);
2201 if (!DATAGRAM_CONN_P (process
))
2204 channel
= XPROCESS (process
)->infd
;
2206 len
= get_lisp_to_sockaddr_size (address
, &family
);
2207 if (datagram_address
[channel
].len
!= len
)
2209 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2215 static const struct socket_options
{
2216 /* The name of this option. Should be lowercase version of option
2217 name without SO_ prefix. */
2219 /* Option level SOL_... */
2221 /* Option number SO_... */
2223 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2224 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2225 } socket_options
[] =
2227 #ifdef SO_BINDTODEVICE
2228 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2231 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2234 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2237 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2240 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2243 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2246 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2249 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2251 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2254 /* Set option OPT to value VAL on socket S.
2256 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2257 Signals an error if setting a known option fails.
2261 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2264 const struct socket_options
*sopt
;
2269 name
= SSDATA (SYMBOL_NAME (opt
));
2270 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2271 if (strcmp (name
, sopt
->name
) == 0)
2274 switch (sopt
->opttype
)
2279 optval
= NILP (val
) ? 0 : 1;
2280 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2281 &optval
, sizeof (optval
));
2289 optval
= XINT (val
);
2291 error ("Bad option value for %s", name
);
2292 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2293 &optval
, sizeof (optval
));
2297 #ifdef SO_BINDTODEVICE
2300 char devname
[IFNAMSIZ
+1];
2302 /* This is broken, at least in the Linux 2.4 kernel.
2303 To unbind, the arg must be a zero integer, not the empty string.
2304 This should work on all systems. KFS. 2003-09-23. */
2305 memset (devname
, 0, sizeof devname
);
2308 char *arg
= SSDATA (val
);
2309 int len
= min (strlen (arg
), IFNAMSIZ
);
2310 memcpy (devname
, arg
, len
);
2312 else if (!NILP (val
))
2313 error ("Bad option value for %s", name
);
2314 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2323 struct linger linger
;
2326 linger
.l_linger
= 0;
2328 linger
.l_linger
= XINT (val
);
2330 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2331 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2332 &linger
, sizeof (linger
));
2342 report_file_error ("Cannot set network option",
2343 Fcons (opt
, Fcons (val
, Qnil
)));
2344 return (1 << sopt
->optbit
);
2348 DEFUN ("set-network-process-option",
2349 Fset_network_process_option
, Sset_network_process_option
,
2351 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2352 See `make-network-process' for a list of options and values.
2353 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2354 OPTION is not a supported option, return nil instead; otherwise return t. */)
2355 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2358 struct Lisp_Process
*p
;
2360 CHECK_PROCESS (process
);
2361 p
= XPROCESS (process
);
2362 if (!NETCONN1_P (p
))
2363 error ("Process is not a network process");
2367 error ("Process is not running");
2369 if (set_socket_option (s
, option
, value
))
2371 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2375 if (NILP (no_error
))
2376 error ("Unknown or unsupported option");
2382 DEFUN ("serial-process-configure",
2383 Fserial_process_configure
,
2384 Sserial_process_configure
,
2386 doc
: /* Configure speed, bytesize, etc. of a serial process.
2388 Arguments are specified as keyword/argument pairs. Attributes that
2389 are not given are re-initialized from the process's current
2390 configuration (available via the function `process-contact') or set to
2391 reasonable default values. The following arguments are defined:
2397 -- Any of these arguments can be given to identify the process that is
2398 to be configured. If none of these arguments is given, the current
2399 buffer's process is used.
2401 :speed SPEED -- SPEED is the speed of the serial port in bits per
2402 second, also called baud rate. Any value can be given for SPEED, but
2403 most serial ports work only at a few defined values between 1200 and
2404 115200, with 9600 being the most common value. If SPEED is nil, the
2405 serial port is not configured any further, i.e., all other arguments
2406 are ignored. This may be useful for special serial ports such as
2407 Bluetooth-to-serial converters which can only be configured through AT
2408 commands. A value of nil for SPEED can be used only when passed
2409 through `make-serial-process' or `serial-term'.
2411 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2412 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2414 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2415 `odd' (use odd parity), or the symbol `even' (use even parity). If
2416 PARITY is not given, no parity is used.
2418 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2419 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2420 is not given or nil, 1 stopbit is used.
2422 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2423 flowcontrol to be used, which is either nil (don't use flowcontrol),
2424 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2425 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2426 flowcontrol is used.
2428 `serial-process-configure' is called by `make-serial-process' for the
2429 initial configuration of the serial port.
2433 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2435 \(serial-process-configure
2436 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2438 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2440 usage: (serial-process-configure &rest ARGS) */)
2441 (size_t nargs
, Lisp_Object
*args
)
2443 struct Lisp_Process
*p
;
2444 Lisp_Object contact
= Qnil
;
2445 Lisp_Object proc
= Qnil
;
2446 struct gcpro gcpro1
;
2448 contact
= Flist (nargs
, args
);
2451 proc
= Fplist_get (contact
, QCprocess
);
2453 proc
= Fplist_get (contact
, QCname
);
2455 proc
= Fplist_get (contact
, QCbuffer
);
2457 proc
= Fplist_get (contact
, QCport
);
2458 proc
= get_process (proc
);
2459 p
= XPROCESS (proc
);
2460 if (!EQ (p
->type
, Qserial
))
2461 error ("Not a serial process");
2463 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2469 serial_configure (p
, contact
);
2475 /* Used by make-serial-process to recover from errors. */
2477 make_serial_process_unwind (Lisp_Object proc
)
2479 if (!PROCESSP (proc
))
2481 remove_process (proc
);
2485 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2487 doc
: /* Create and return a serial port process.
2489 In Emacs, serial port connections are represented by process objects,
2490 so input and output work as for subprocesses, and `delete-process'
2491 closes a serial port connection. However, a serial process has no
2492 process id, it cannot be signaled, and the status codes are different
2493 from normal processes.
2495 `make-serial-process' creates a process and a buffer, on which you
2496 probably want to use `process-send-string'. Try \\[serial-term] for
2497 an interactive terminal. See below for examples.
2499 Arguments are specified as keyword/argument pairs. The following
2500 arguments are defined:
2502 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2503 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2504 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2505 the backslashes in strings).
2507 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2508 which is called by `make-serial-process'.
2510 :name NAME -- NAME is the name of the process. If NAME is not given,
2511 the value of PORT is used.
2513 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2514 with the process. Process output goes at the end of that buffer,
2515 unless you specify an output stream or filter function to handle the
2516 output. If BUFFER is not given, the value of NAME is used.
2518 :coding CODING -- If CODING is a symbol, it specifies the coding
2519 system used for both reading and writing for this process. If CODING
2520 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2521 ENCODING is used for writing.
2523 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2524 the process is running. If BOOL is not given, query before exiting.
2526 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2527 In the stopped state, a serial process does not accept incoming data,
2528 but you can send outgoing data. The stopped state is cleared by
2529 `continue-process' and set by `stop-process'.
2531 :filter FILTER -- Install FILTER as the process filter.
2533 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2535 :plist PLIST -- Install PLIST as the initial plist of the process.
2542 -- These arguments are handled by `serial-process-configure', which is
2543 called by `make-serial-process'.
2545 The original argument list, possibly modified by later configuration,
2546 is available via the function `process-contact'.
2550 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2552 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2554 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2556 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2558 usage: (make-serial-process &rest ARGS) */)
2559 (size_t nargs
, Lisp_Object
*args
)
2562 Lisp_Object proc
, contact
, port
;
2563 struct Lisp_Process
*p
;
2564 struct gcpro gcpro1
;
2565 Lisp_Object name
, buffer
;
2566 Lisp_Object tem
, val
;
2567 int specpdl_count
= -1;
2572 contact
= Flist (nargs
, args
);
2575 port
= Fplist_get (contact
, QCport
);
2577 error ("No port specified");
2578 CHECK_STRING (port
);
2580 if (NILP (Fplist_member (contact
, QCspeed
)))
2581 error (":speed not specified");
2582 if (!NILP (Fplist_get (contact
, QCspeed
)))
2583 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2585 name
= Fplist_get (contact
, QCname
);
2588 CHECK_STRING (name
);
2589 proc
= make_process (name
);
2590 specpdl_count
= SPECPDL_INDEX ();
2591 record_unwind_protect (make_serial_process_unwind
, proc
);
2592 p
= XPROCESS (proc
);
2594 fd
= serial_open (SSDATA (port
));
2597 if (fd
> max_process_desc
)
2598 max_process_desc
= fd
;
2599 chan_process
[fd
] = proc
;
2601 buffer
= Fplist_get (contact
, QCbuffer
);
2604 buffer
= Fget_buffer_create (buffer
);
2607 p
->childp
= contact
;
2608 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2610 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2611 p
->filter
= Fplist_get (contact
, QCfilter
);
2613 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2614 p
->kill_without_query
= 1;
2615 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2619 if (!EQ (p
->command
, Qt
))
2621 FD_SET (fd
, &input_wait_mask
);
2622 FD_SET (fd
, &non_keyboard_wait_mask
);
2625 if (BUFFERP (buffer
))
2627 set_marker_both (p
->mark
, buffer
,
2628 BUF_ZV (XBUFFER (buffer
)),
2629 BUF_ZV_BYTE (XBUFFER (buffer
)));
2632 tem
= Fplist_member (contact
, QCcoding
);
2633 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2639 val
= XCAR (XCDR (tem
));
2643 else if (!NILP (Vcoding_system_for_read
))
2644 val
= Vcoding_system_for_read
;
2645 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2646 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2648 p
->decode_coding_system
= val
;
2653 val
= XCAR (XCDR (tem
));
2657 else if (!NILP (Vcoding_system_for_write
))
2658 val
= Vcoding_system_for_write
;
2659 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2660 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2662 p
->encode_coding_system
= val
;
2664 setup_process_coding_systems (proc
);
2665 p
->decoding_buf
= empty_unibyte_string
;
2666 p
->decoding_carryover
= 0;
2667 p
->encoding_buf
= empty_unibyte_string
;
2668 p
->inherit_coding_system_flag
2669 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2671 Fserial_process_configure (nargs
, args
);
2673 specpdl_ptr
= specpdl
+ specpdl_count
;
2679 /* Create a network stream/datagram client/server process. Treated
2680 exactly like a normal process when reading and writing. Primary
2681 differences are in status display and process deletion. A network
2682 connection has no PID; you cannot signal it. All you can do is
2683 stop/continue it and deactivate/close it via delete-process */
2685 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2687 doc
: /* Create and return a network server or client process.
2689 In Emacs, network connections are represented by process objects, so
2690 input and output work as for subprocesses and `delete-process' closes
2691 a network connection. However, a network process has no process id,
2692 it cannot be signaled, and the status codes are different from normal
2695 Arguments are specified as keyword/argument pairs. The following
2696 arguments are defined:
2698 :name NAME -- NAME is name for process. It is modified if necessary
2701 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2702 with the process. Process output goes at end of that buffer, unless
2703 you specify an output stream or filter function to handle the output.
2704 BUFFER may be also nil, meaning that this process is not associated
2707 :host HOST -- HOST is name of the host to connect to, or its IP
2708 address. The symbol `local' specifies the local host. If specified
2709 for a server process, it must be a valid name or address for the local
2710 host, and only clients connecting to that address will be accepted.
2712 :service SERVICE -- SERVICE is name of the service desired, or an
2713 integer specifying a port number to connect to. If SERVICE is t,
2714 a random port number is selected for the server. (If Emacs was
2715 compiled with getaddrinfo, a port number can also be specified as a
2716 string, e.g. "80", as well as an integer. This is not portable.)
2718 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2719 stream type connection, `datagram' creates a datagram type connection,
2720 `seqpacket' creates a reliable datagram connection.
2722 :family FAMILY -- FAMILY is the address (and protocol) family for the
2723 service specified by HOST and SERVICE. The default (nil) is to use
2724 whatever address family (IPv4 or IPv6) that is defined for the host
2725 and port number specified by HOST and SERVICE. Other address families
2727 local -- for a local (i.e. UNIX) address specified by SERVICE.
2728 ipv4 -- use IPv4 address family only.
2729 ipv6 -- use IPv6 address family only.
2731 :local ADDRESS -- ADDRESS is the local address used for the connection.
2732 This parameter is ignored when opening a client process. When specified
2733 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2735 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2736 connection. This parameter is ignored when opening a stream server
2737 process. For a datagram server process, it specifies the initial
2738 setting of the remote datagram address. When specified for a client
2739 process, the FAMILY, HOST, and SERVICE args are ignored.
2741 The format of ADDRESS depends on the address family:
2742 - An IPv4 address is represented as an vector of integers [A B C D P]
2743 corresponding to numeric IP address A.B.C.D and port number P.
2744 - A local address is represented as a string with the address in the
2745 local address space.
2746 - An "unsupported family" address is represented by a cons (F . AV)
2747 where F is the family number and AV is a vector containing the socket
2748 address data with one element per address data byte. Do not rely on
2749 this format in portable code, as it may depend on implementation
2750 defined constants, data sizes, and data structure alignment.
2752 :coding CODING -- If CODING is a symbol, it specifies the coding
2753 system used for both reading and writing for this process. If CODING
2754 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2755 ENCODING is used for writing.
2757 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2758 return without waiting for the connection to complete; instead, the
2759 sentinel function will be called with second arg matching "open" (if
2760 successful) or "failed" when the connect completes. Default is to use
2761 a blocking connect (i.e. wait) for stream type connections.
2763 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2764 running when Emacs is exited.
2766 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2767 In the stopped state, a server process does not accept new
2768 connections, and a client process does not handle incoming traffic.
2769 The stopped state is cleared by `continue-process' and set by
2772 :filter FILTER -- Install FILTER as the process filter.
2774 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2775 process filter are multibyte, otherwise they are unibyte.
2776 If this keyword is not specified, the strings are multibyte if
2777 `default-enable-multibyte-characters' is non-nil.
2779 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2781 :log LOG -- Install LOG as the server process log function. This
2782 function is called when the server accepts a network connection from a
2783 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2784 is the server process, CLIENT is the new process for the connection,
2785 and MESSAGE is a string.
2787 :plist PLIST -- Install PLIST as the new process' initial plist.
2789 :server QLEN -- if QLEN is non-nil, create a server process for the
2790 specified FAMILY, SERVICE, and connection type (stream or datagram).
2791 If QLEN is an integer, it is used as the max. length of the server's
2792 pending connection queue (also known as the backlog); the default
2793 queue length is 5. Default is to create a client process.
2795 The following network options can be specified for this connection:
2797 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2798 :dontroute BOOL -- Only send to directly connected hosts.
2799 :keepalive BOOL -- Send keep-alive messages on network stream.
2800 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2801 :oobinline BOOL -- Place out-of-band data in receive data stream.
2802 :priority INT -- Set protocol defined priority for sent packets.
2803 :reuseaddr BOOL -- Allow reusing a recently used local address
2804 (this is allowed by default for a server process).
2805 :bindtodevice NAME -- bind to interface NAME. Using this may require
2806 special privileges on some systems.
2808 Consult the relevant system programmer's manual pages for more
2809 information on using these options.
2812 A server process will listen for and accept connections from clients.
2813 When a client connection is accepted, a new network process is created
2814 for the connection with the following parameters:
2816 - The client's process name is constructed by concatenating the server
2817 process' NAME and a client identification string.
2818 - If the FILTER argument is non-nil, the client process will not get a
2819 separate process buffer; otherwise, the client's process buffer is a newly
2820 created buffer named after the server process' BUFFER name or process
2821 NAME concatenated with the client identification string.
2822 - The connection type and the process filter and sentinel parameters are
2823 inherited from the server process' TYPE, FILTER and SENTINEL.
2824 - The client process' contact info is set according to the client's
2825 addressing information (typically an IP address and a port number).
2826 - The client process' plist is initialized from the server's plist.
2828 Notice that the FILTER and SENTINEL args are never used directly by
2829 the server process. Also, the BUFFER argument is not used directly by
2830 the server process, but via the optional :log function, accepted (and
2831 failed) connections may be logged in the server process' buffer.
2833 The original argument list, modified with the actual connection
2834 information, is available via the `process-contact' function.
2836 usage: (make-network-process &rest ARGS) */)
2837 (size_t nargs
, Lisp_Object
*args
)
2840 Lisp_Object contact
;
2841 struct Lisp_Process
*p
;
2842 #ifdef HAVE_GETADDRINFO
2843 struct addrinfo ai
, *res
, *lres
;
2844 struct addrinfo hints
;
2845 const char *portstring
;
2847 #else /* HAVE_GETADDRINFO */
2848 struct _emacs_addrinfo
2854 struct sockaddr
*ai_addr
;
2855 struct _emacs_addrinfo
*ai_next
;
2857 #endif /* HAVE_GETADDRINFO */
2858 struct sockaddr_in address_in
;
2859 #ifdef HAVE_LOCAL_SOCKETS
2860 struct sockaddr_un address_un
;
2865 int s
= -1, outch
, inch
;
2866 struct gcpro gcpro1
;
2867 int count
= SPECPDL_INDEX ();
2869 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2871 Lisp_Object name
, buffer
, host
, service
, address
;
2872 Lisp_Object filter
, sentinel
;
2873 int is_non_blocking_client
= 0;
2874 int is_server
= 0, backlog
= 5;
2881 /* Save arguments for process-contact and clone-process. */
2882 contact
= Flist (nargs
, args
);
2886 /* Ensure socket support is loaded if available. */
2887 init_winsock (TRUE
);
2890 /* :type TYPE (nil: stream, datagram */
2891 tem
= Fplist_get (contact
, QCtype
);
2893 socktype
= SOCK_STREAM
;
2894 #ifdef DATAGRAM_SOCKETS
2895 else if (EQ (tem
, Qdatagram
))
2896 socktype
= SOCK_DGRAM
;
2898 #ifdef HAVE_SEQPACKET
2899 else if (EQ (tem
, Qseqpacket
))
2900 socktype
= SOCK_SEQPACKET
;
2903 error ("Unsupported connection type");
2906 tem
= Fplist_get (contact
, QCserver
);
2909 /* Don't support network sockets when non-blocking mode is
2910 not available, since a blocked Emacs is not useful. */
2911 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
2912 error ("Network servers not supported");
2916 backlog
= XINT (tem
);
2920 /* Make QCaddress an alias for :local (server) or :remote (client). */
2921 QCaddress
= is_server
? QClocal
: QCremote
;
2924 if (!is_server
&& socktype
!= SOCK_DGRAM
2925 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2927 #ifndef NON_BLOCKING_CONNECT
2928 error ("Non-blocking connect not supported");
2930 is_non_blocking_client
= 1;
2934 name
= Fplist_get (contact
, QCname
);
2935 buffer
= Fplist_get (contact
, QCbuffer
);
2936 filter
= Fplist_get (contact
, QCfilter
);
2937 sentinel
= Fplist_get (contact
, QCsentinel
);
2939 CHECK_STRING (name
);
2941 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2942 ai
.ai_socktype
= socktype
;
2947 /* :local ADDRESS or :remote ADDRESS */
2948 address
= Fplist_get (contact
, QCaddress
);
2949 if (!NILP (address
))
2951 host
= service
= Qnil
;
2953 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2954 error ("Malformed :address");
2955 ai
.ai_family
= family
;
2956 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2957 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2961 /* :family FAMILY -- nil (for Inet), local, or integer. */
2962 tem
= Fplist_get (contact
, QCfamily
);
2965 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2971 #ifdef HAVE_LOCAL_SOCKETS
2972 else if (EQ (tem
, Qlocal
))
2976 else if (EQ (tem
, Qipv6
))
2979 else if (EQ (tem
, Qipv4
))
2981 else if (INTEGERP (tem
))
2982 family
= XINT (tem
);
2984 error ("Unknown address family");
2986 ai
.ai_family
= family
;
2988 /* :service SERVICE -- string, integer (port number), or t (random port). */
2989 service
= Fplist_get (contact
, QCservice
);
2991 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2992 host
= Fplist_get (contact
, QChost
);
2995 if (EQ (host
, Qlocal
))
2996 /* Depending on setup, "localhost" may map to different IPv4 and/or
2997 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2998 host
= build_string ("127.0.0.1");
2999 CHECK_STRING (host
);
3002 #ifdef HAVE_LOCAL_SOCKETS
3003 if (family
== AF_LOCAL
)
3007 message (":family local ignores the :host \"%s\" property",
3009 contact
= Fplist_put (contact
, QChost
, Qnil
);
3012 CHECK_STRING (service
);
3013 memset (&address_un
, 0, sizeof address_un
);
3014 address_un
.sun_family
= AF_LOCAL
;
3015 strncpy (address_un
.sun_path
, SSDATA (service
), sizeof address_un
.sun_path
);
3016 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3017 ai
.ai_addrlen
= sizeof address_un
;
3022 /* Slow down polling to every ten seconds.
3023 Some kernels have a bug which causes retrying connect to fail
3024 after a connect. Polling can interfere with gethostbyname too. */
3025 #ifdef POLL_FOR_INPUT
3026 if (socktype
!= SOCK_DGRAM
)
3028 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3029 bind_polling_period (10);
3033 #ifdef HAVE_GETADDRINFO
3034 /* If we have a host, use getaddrinfo to resolve both host and service.
3035 Otherwise, use getservbyname to lookup the service. */
3039 /* SERVICE can either be a string or int.
3040 Convert to a C string for later use by getaddrinfo. */
3041 if (EQ (service
, Qt
))
3043 else if (INTEGERP (service
))
3045 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3046 portstring
= portbuf
;
3050 CHECK_STRING (service
);
3051 portstring
= SSDATA (service
);
3056 memset (&hints
, 0, sizeof (hints
));
3058 hints
.ai_family
= family
;
3059 hints
.ai_socktype
= socktype
;
3060 hints
.ai_protocol
= 0;
3062 #ifdef HAVE_RES_INIT
3066 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3068 #ifdef HAVE_GAI_STRERROR
3069 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3071 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3077 #endif /* HAVE_GETADDRINFO */
3079 /* We end up here if getaddrinfo is not defined, or in case no hostname
3080 has been specified (e.g. for a local server process). */
3082 if (EQ (service
, Qt
))
3084 else if (INTEGERP (service
))
3085 port
= htons ((unsigned short) XINT (service
));
3088 struct servent
*svc_info
;
3089 CHECK_STRING (service
);
3090 svc_info
= getservbyname (SSDATA (service
),
3091 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3093 error ("Unknown service: %s", SDATA (service
));
3094 port
= svc_info
->s_port
;
3097 memset (&address_in
, 0, sizeof address_in
);
3098 address_in
.sin_family
= family
;
3099 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3100 address_in
.sin_port
= port
;
3102 #ifndef HAVE_GETADDRINFO
3105 struct hostent
*host_info_ptr
;
3107 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3108 as it may `hang' Emacs for a very long time. */
3112 #ifdef HAVE_RES_INIT
3116 host_info_ptr
= gethostbyname (SDATA (host
));
3121 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3122 host_info_ptr
->h_length
);
3123 family
= host_info_ptr
->h_addrtype
;
3124 address_in
.sin_family
= family
;
3127 /* Attempt to interpret host as numeric inet address */
3129 unsigned long numeric_addr
;
3130 numeric_addr
= inet_addr (SSDATA (host
));
3131 if (numeric_addr
== -1)
3132 error ("Unknown host \"%s\"", SDATA (host
));
3134 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3135 sizeof (address_in
.sin_addr
));
3139 #endif /* not HAVE_GETADDRINFO */
3141 ai
.ai_family
= family
;
3142 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3143 ai
.ai_addrlen
= sizeof address_in
;
3147 /* Do this in case we never enter the for-loop below. */
3148 count1
= SPECPDL_INDEX ();
3151 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3160 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3167 #ifdef DATAGRAM_SOCKETS
3168 if (!is_server
&& socktype
== SOCK_DGRAM
)
3170 #endif /* DATAGRAM_SOCKETS */
3172 #ifdef NON_BLOCKING_CONNECT
3173 if (is_non_blocking_client
)
3176 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3178 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3190 /* Make us close S if quit. */
3191 record_unwind_protect (close_file_unwind
, make_number (s
));
3193 /* Parse network options in the arg list.
3194 We simply ignore anything which isn't a known option (including other keywords).
3195 An error is signaled if setting a known option fails. */
3196 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3197 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3201 /* Configure as a server socket. */
3203 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3204 explicit :reuseaddr key to override this. */
3205 #ifdef HAVE_LOCAL_SOCKETS
3206 if (family
!= AF_LOCAL
)
3208 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3211 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3212 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3215 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3216 report_file_error ("Cannot bind server socket", Qnil
);
3218 #ifdef HAVE_GETSOCKNAME
3219 if (EQ (service
, Qt
))
3221 struct sockaddr_in sa1
;
3222 socklen_t len1
= sizeof (sa1
);
3223 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3225 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3226 service
= make_number (ntohs (sa1
.sin_port
));
3227 contact
= Fplist_put (contact
, QCservice
, service
);
3232 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3233 report_file_error ("Cannot listen on server socket", Qnil
);
3241 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3244 if (ret
== 0 || xerrno
== EISCONN
)
3246 /* The unwind-protect will be discarded afterwards.
3247 Likewise for immediate_quit. */
3251 #ifdef NON_BLOCKING_CONNECT
3253 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3257 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3264 if (xerrno
== EINTR
)
3266 /* Unlike most other syscalls connect() cannot be called
3267 again. (That would return EALREADY.) The proper way to
3268 wait for completion is select(). */
3276 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3283 report_file_error ("select failed", Qnil
);
3287 len
= sizeof xerrno
;
3288 eassert (FD_ISSET (s
, &fdset
));
3289 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3290 report_file_error ("getsockopt failed", Qnil
);
3292 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3296 #endif /* !WINDOWSNT */
3300 /* Discard the unwind protect closing S. */
3301 specpdl_ptr
= specpdl
+ count1
;
3306 if (xerrno
== EINTR
)
3313 #ifdef DATAGRAM_SOCKETS
3314 if (socktype
== SOCK_DGRAM
)
3316 if (datagram_address
[s
].sa
)
3318 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3319 datagram_address
[s
].len
= lres
->ai_addrlen
;
3323 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3324 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3327 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3328 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3329 conv_lisp_to_sockaddr (rfamily
, remote
,
3330 datagram_address
[s
].sa
, rlen
);
3334 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3337 contact
= Fplist_put (contact
, QCaddress
,
3338 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3339 #ifdef HAVE_GETSOCKNAME
3342 struct sockaddr_in sa1
;
3343 socklen_t len1
= sizeof (sa1
);
3344 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3345 contact
= Fplist_put (contact
, QClocal
,
3346 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3353 #ifdef HAVE_GETADDRINFO
3362 /* Discard the unwind protect for closing S, if any. */
3363 specpdl_ptr
= specpdl
+ count1
;
3365 /* Unwind bind_polling_period and request_sigio. */
3366 unbind_to (count
, Qnil
);
3370 /* If non-blocking got this far - and failed - assume non-blocking is
3371 not supported after all. This is probably a wrong assumption, but
3372 the normal blocking calls to open-network-stream handles this error
3374 if (is_non_blocking_client
)
3379 report_file_error ("make server process failed", contact
);
3381 report_file_error ("make client process failed", contact
);
3388 buffer
= Fget_buffer_create (buffer
);
3389 proc
= make_process (name
);
3391 chan_process
[inch
] = proc
;
3394 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3397 fcntl (inch
, F_SETFL
, O_NDELAY
);
3401 p
= XPROCESS (proc
);
3403 p
->childp
= contact
;
3404 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3408 p
->sentinel
= sentinel
;
3410 p
->log
= Fplist_get (contact
, QClog
);
3411 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3412 p
->kill_without_query
= 1;
3413 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3418 if (is_server
&& socktype
!= SOCK_DGRAM
)
3419 p
->status
= Qlisten
;
3421 /* Make the process marker point into the process buffer (if any). */
3422 if (BUFFERP (buffer
))
3423 set_marker_both (p
->mark
, buffer
,
3424 BUF_ZV (XBUFFER (buffer
)),
3425 BUF_ZV_BYTE (XBUFFER (buffer
)));
3427 #ifdef NON_BLOCKING_CONNECT
3428 if (is_non_blocking_client
)
3430 /* We may get here if connect did succeed immediately. However,
3431 in that case, we still need to signal this like a non-blocking
3433 p
->status
= Qconnect
;
3434 if (!FD_ISSET (inch
, &connect_wait_mask
))
3436 FD_SET (inch
, &connect_wait_mask
);
3437 FD_SET (inch
, &write_mask
);
3438 num_pending_connects
++;
3443 /* A server may have a client filter setting of Qt, but it must
3444 still listen for incoming connects unless it is stopped. */
3445 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3446 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3448 FD_SET (inch
, &input_wait_mask
);
3449 FD_SET (inch
, &non_keyboard_wait_mask
);
3452 if (inch
> max_process_desc
)
3453 max_process_desc
= inch
;
3455 tem
= Fplist_member (contact
, QCcoding
);
3456 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3457 tem
= Qnil
; /* No error message (too late!). */
3460 /* Setup coding systems for communicating with the network stream. */
3461 struct gcpro inner_gcpro1
;
3462 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3463 Lisp_Object coding_systems
= Qt
;
3464 Lisp_Object fargs
[5], val
;
3468 val
= XCAR (XCDR (tem
));
3472 else if (!NILP (Vcoding_system_for_read
))
3473 val
= Vcoding_system_for_read
;
3474 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3475 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3476 /* We dare not decode end-of-line format by setting VAL to
3477 Qraw_text, because the existing Emacs Lisp libraries
3478 assume that they receive bare code including a sequene of
3483 if (NILP (host
) || NILP (service
))
3484 coding_systems
= Qnil
;
3487 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3488 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3489 GCPRO1_VAR (proc
, inner_gcpro
);
3490 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3491 UNGCPRO_VAR (inner_gcpro
);
3493 if (CONSP (coding_systems
))
3494 val
= XCAR (coding_systems
);
3495 else if (CONSP (Vdefault_process_coding_system
))
3496 val
= XCAR (Vdefault_process_coding_system
);
3500 p
->decode_coding_system
= val
;
3504 val
= XCAR (XCDR (tem
));
3508 else if (!NILP (Vcoding_system_for_write
))
3509 val
= Vcoding_system_for_write
;
3510 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3514 if (EQ (coding_systems
, Qt
))
3516 if (NILP (host
) || NILP (service
))
3517 coding_systems
= Qnil
;
3520 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3521 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3522 GCPRO1_VAR (proc
, inner_gcpro
);
3523 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3524 UNGCPRO_VAR (inner_gcpro
);
3527 if (CONSP (coding_systems
))
3528 val
= XCDR (coding_systems
);
3529 else if (CONSP (Vdefault_process_coding_system
))
3530 val
= XCDR (Vdefault_process_coding_system
);
3534 p
->encode_coding_system
= val
;
3536 setup_process_coding_systems (proc
);
3538 p
->decoding_buf
= empty_unibyte_string
;
3539 p
->decoding_carryover
= 0;
3540 p
->encoding_buf
= empty_unibyte_string
;
3542 p
->inherit_coding_system_flag
3543 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3550 #if defined(HAVE_NET_IF_H)
3553 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3554 doc
: /* Return an alist of all network interfaces and their network address.
3555 Each element is a cons, the car of which is a string containing the
3556 interface name, and the cdr is the network address in internal
3557 format; see the description of ADDRESS in `make-network-process'. */)
3560 struct ifconf ifconf
;
3561 struct ifreq
*ifreqs
= NULL
;
3566 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3572 buf_size
= ifaces
* sizeof (ifreqs
[0]);
3573 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3580 ifconf
.ifc_len
= buf_size
;
3581 ifconf
.ifc_req
= ifreqs
;
3582 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3588 if (ifconf
.ifc_len
== buf_size
)
3592 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3595 while (--ifaces
>= 0)
3597 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3598 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3599 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3601 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3602 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3603 res
= Fcons (Fcons (build_string (namebuf
),
3604 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3605 sizeof (struct sockaddr
))),
3611 #endif /* SIOCGIFCONF */
3613 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3617 const char *flag_sym
;
3620 static const struct ifflag_def ifflag_table
[] = {
3624 #ifdef IFF_BROADCAST
3625 { IFF_BROADCAST
, "broadcast" },
3628 { IFF_DEBUG
, "debug" },
3631 { IFF_LOOPBACK
, "loopback" },
3633 #ifdef IFF_POINTOPOINT
3634 { IFF_POINTOPOINT
, "pointopoint" },
3637 { IFF_RUNNING
, "running" },
3640 { IFF_NOARP
, "noarp" },
3643 { IFF_PROMISC
, "promisc" },
3645 #ifdef IFF_NOTRAILERS
3646 { IFF_NOTRAILERS
, "notrailers" },
3649 { IFF_ALLMULTI
, "allmulti" },
3652 { IFF_MASTER
, "master" },
3655 { IFF_SLAVE
, "slave" },
3657 #ifdef IFF_MULTICAST
3658 { IFF_MULTICAST
, "multicast" },
3661 { IFF_PORTSEL
, "portsel" },
3663 #ifdef IFF_AUTOMEDIA
3664 { IFF_AUTOMEDIA
, "automedia" },
3667 { IFF_DYNAMIC
, "dynamic" },
3670 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3673 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3676 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3679 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3682 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3687 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3688 doc
: /* Return information about network interface named IFNAME.
3689 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3690 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3691 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3692 FLAGS is the current flags of the interface. */)
3693 (Lisp_Object ifname
)
3696 Lisp_Object res
= Qnil
;
3701 CHECK_STRING (ifname
);
3703 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3704 strncpy (rq
.ifr_name
, SSDATA (ifname
), sizeof (rq
.ifr_name
));
3706 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3711 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3712 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3714 int flags
= rq
.ifr_flags
;
3715 const struct ifflag_def
*fp
;
3719 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3721 if (flags
& fp
->flag_bit
)
3723 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3724 flags
-= fp
->flag_bit
;
3727 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3731 elt
= Fcons (make_number (fnum
), elt
);
3736 res
= Fcons (elt
, res
);
3739 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3740 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3742 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3743 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3747 for (n
= 0; n
< 6; n
++)
3748 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3749 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3752 res
= Fcons (elt
, res
);
3755 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3756 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3759 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3760 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3762 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3766 res
= Fcons (elt
, res
);
3769 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3770 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3773 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3776 res
= Fcons (elt
, res
);
3779 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3780 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3783 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3786 res
= Fcons (elt
, res
);
3790 return any
? res
: Qnil
;
3793 #endif /* defined(HAVE_NET_IF_H) */
3795 /* Turn off input and output for process PROC. */
3798 deactivate_process (Lisp_Object proc
)
3800 register int inchannel
, outchannel
;
3801 register struct Lisp_Process
*p
= XPROCESS (proc
);
3803 inchannel
= p
->infd
;
3804 outchannel
= p
->outfd
;
3806 #ifdef ADAPTIVE_READ_BUFFERING
3807 if (p
->read_output_delay
> 0)
3809 if (--process_output_delay_count
< 0)
3810 process_output_delay_count
= 0;
3811 p
->read_output_delay
= 0;
3812 p
->read_output_skip
= 0;
3818 /* Beware SIGCHLD hereabouts. */
3819 flush_pending_output (inchannel
);
3820 emacs_close (inchannel
);
3821 if (outchannel
>= 0 && outchannel
!= inchannel
)
3822 emacs_close (outchannel
);
3826 #ifdef DATAGRAM_SOCKETS
3827 if (DATAGRAM_CHAN_P (inchannel
))
3829 xfree (datagram_address
[inchannel
].sa
);
3830 datagram_address
[inchannel
].sa
= 0;
3831 datagram_address
[inchannel
].len
= 0;
3834 chan_process
[inchannel
] = Qnil
;
3835 FD_CLR (inchannel
, &input_wait_mask
);
3836 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3837 #ifdef NON_BLOCKING_CONNECT
3838 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3840 FD_CLR (inchannel
, &connect_wait_mask
);
3841 FD_CLR (inchannel
, &write_mask
);
3842 if (--num_pending_connects
< 0)
3846 if (inchannel
== max_process_desc
)
3849 /* We just closed the highest-numbered process input descriptor,
3850 so recompute the highest-numbered one now. */
3851 max_process_desc
= 0;
3852 for (i
= 0; i
< MAXDESC
; i
++)
3853 if (!NILP (chan_process
[i
]))
3854 max_process_desc
= i
;
3860 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3862 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3863 It is read into the process' buffers or given to their filter functions.
3864 Non-nil arg PROCESS means do not return until some output has been received
3867 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3868 and milliseconds to wait; return after that much time whether or not
3869 there is any subprocess output. If SECONDS is a floating point number,
3870 it specifies a fractional number of seconds to wait.
3871 The MILLISEC argument is obsolete and should be avoided.
3873 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3874 from PROCESS, suspending reading output from other processes.
3875 If JUST-THIS-ONE is an integer, don't run any timers either.
3876 Return non-nil if we received any output before the timeout expired. */)
3877 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3879 int secs
, usecs
= 0;
3881 if (! NILP (process
))
3882 CHECK_PROCESS (process
);
3884 just_this_one
= Qnil
;
3886 if (!NILP (millisec
))
3887 { /* Obsolete calling convention using integers rather than floats. */
3888 CHECK_NUMBER (millisec
);
3890 seconds
= make_float (XINT (millisec
) / 1000.0);
3893 CHECK_NUMBER (seconds
);
3894 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3898 if (!NILP (seconds
))
3900 if (INTEGERP (seconds
))
3901 secs
= XINT (seconds
);
3902 else if (FLOATP (seconds
))
3904 double timeout
= XFLOAT_DATA (seconds
);
3905 secs
= (int) timeout
;
3906 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3909 wrong_type_argument (Qnumberp
, seconds
);
3911 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3912 secs
= -1, usecs
= 0;
3915 secs
= NILP (process
) ? -1 : 0;
3918 (wait_reading_process_output (secs
, usecs
, 0, 0,
3920 !NILP (process
) ? XPROCESS (process
) : NULL
,
3921 NILP (just_this_one
) ? 0 :
3922 !INTEGERP (just_this_one
) ? 1 : -1)
3926 /* Accept a connection for server process SERVER on CHANNEL. */
3928 static int connect_counter
= 0;
3931 server_accept_connection (Lisp_Object server
, int channel
)
3933 Lisp_Object proc
, caller
, name
, buffer
;
3934 Lisp_Object contact
, host
, service
;
3935 struct Lisp_Process
*ps
= XPROCESS (server
);
3936 struct Lisp_Process
*p
;
3940 struct sockaddr_in in
;
3942 struct sockaddr_in6 in6
;
3944 #ifdef HAVE_LOCAL_SOCKETS
3945 struct sockaddr_un un
;
3948 socklen_t len
= sizeof saddr
;
3950 s
= accept (channel
, &saddr
.sa
, &len
);
3959 if (code
== EWOULDBLOCK
)
3963 if (!NILP (ps
->log
))
3964 call3 (ps
->log
, server
, Qnil
,
3965 concat3 (build_string ("accept failed with code"),
3966 Fnumber_to_string (make_number (code
)),
3967 build_string ("\n")));
3973 /* Setup a new process to handle the connection. */
3975 /* Generate a unique identification of the caller, and build contact
3976 information for this process. */
3979 switch (saddr
.sa
.sa_family
)
3983 Lisp_Object args
[5];
3984 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
3985 args
[0] = build_string ("%d.%d.%d.%d");
3986 args
[1] = make_number (*ip
++);
3987 args
[2] = make_number (*ip
++);
3988 args
[3] = make_number (*ip
++);
3989 args
[4] = make_number (*ip
++);
3990 host
= Fformat (5, args
);
3991 service
= make_number (ntohs (saddr
.in
.sin_port
));
3993 args
[0] = build_string (" <%s:%d>");
3996 caller
= Fformat (3, args
);
4003 Lisp_Object args
[9];
4004 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4006 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4007 for (i
= 0; i
< 8; i
++)
4008 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4009 host
= Fformat (9, args
);
4010 service
= make_number (ntohs (saddr
.in
.sin_port
));
4012 args
[0] = build_string (" <[%s]:%d>");
4015 caller
= Fformat (3, args
);
4020 #ifdef HAVE_LOCAL_SOCKETS
4024 caller
= Fnumber_to_string (make_number (connect_counter
));
4025 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4029 /* Create a new buffer name for this process if it doesn't have a
4030 filter. The new buffer name is based on the buffer name or
4031 process name of the server process concatenated with the caller
4034 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4038 buffer
= ps
->buffer
;
4040 buffer
= Fbuffer_name (buffer
);
4045 buffer
= concat2 (buffer
, caller
);
4046 buffer
= Fget_buffer_create (buffer
);
4050 /* Generate a unique name for the new server process. Combine the
4051 server process name with the caller identification. */
4053 name
= concat2 (ps
->name
, caller
);
4054 proc
= make_process (name
);
4056 chan_process
[s
] = proc
;
4059 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4062 fcntl (s
, F_SETFL
, O_NDELAY
);
4066 p
= XPROCESS (proc
);
4068 /* Build new contact information for this setup. */
4069 contact
= Fcopy_sequence (ps
->childp
);
4070 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4071 contact
= Fplist_put (contact
, QChost
, host
);
4072 if (!NILP (service
))
4073 contact
= Fplist_put (contact
, QCservice
, service
);
4074 contact
= Fplist_put (contact
, QCremote
,
4075 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4076 #ifdef HAVE_GETSOCKNAME
4078 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4079 contact
= Fplist_put (contact
, QClocal
,
4080 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4083 p
->childp
= contact
;
4084 p
->plist
= Fcopy_sequence (ps
->plist
);
4088 p
->sentinel
= ps
->sentinel
;
4089 p
->filter
= ps
->filter
;
4096 /* Client processes for accepted connections are not stopped initially. */
4097 if (!EQ (p
->filter
, Qt
))
4099 FD_SET (s
, &input_wait_mask
);
4100 FD_SET (s
, &non_keyboard_wait_mask
);
4103 if (s
> max_process_desc
)
4104 max_process_desc
= s
;
4106 /* Setup coding system for new process based on server process.
4107 This seems to be the proper thing to do, as the coding system
4108 of the new process should reflect the settings at the time the
4109 server socket was opened; not the current settings. */
4111 p
->decode_coding_system
= ps
->decode_coding_system
;
4112 p
->encode_coding_system
= ps
->encode_coding_system
;
4113 setup_process_coding_systems (proc
);
4115 p
->decoding_buf
= empty_unibyte_string
;
4116 p
->decoding_carryover
= 0;
4117 p
->encoding_buf
= empty_unibyte_string
;
4119 p
->inherit_coding_system_flag
4120 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4122 if (!NILP (ps
->log
))
4123 call3 (ps
->log
, server
, proc
,
4124 concat3 (build_string ("accept from "),
4125 (STRINGP (host
) ? host
: build_string ("-")),
4126 build_string ("\n")));
4128 if (!NILP (p
->sentinel
))
4129 exec_sentinel (proc
,
4130 concat3 (build_string ("open from "),
4131 (STRINGP (host
) ? host
: build_string ("-")),
4132 build_string ("\n")));
4135 /* This variable is different from waiting_for_input in keyboard.c.
4136 It is used to communicate to a lisp process-filter/sentinel (via the
4137 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4138 for user-input when that process-filter was called.
4139 waiting_for_input cannot be used as that is by definition 0 when
4140 lisp code is being evalled.
4141 This is also used in record_asynch_buffer_change.
4142 For that purpose, this must be 0
4143 when not inside wait_reading_process_output. */
4144 static int waiting_for_user_input_p
;
4147 wait_reading_process_output_unwind (Lisp_Object data
)
4149 waiting_for_user_input_p
= XINT (data
);
4153 /* This is here so breakpoints can be put on it. */
4155 wait_reading_process_output_1 (void)
4159 /* Use a wrapper around select to work around a bug in gdb 5.3.
4160 Normally, the wrapper is optimized away by inlining.
4162 If emacs is stopped inside select, the gdb backtrace doesn't
4163 show the function which called select, so it is practically
4164 impossible to step through wait_reading_process_output. */
4168 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4170 return select (n
, rfd
, wfd
, xfd
, tmo
);
4172 #define select select_wrapper
4175 /* Read and dispose of subprocess output while waiting for timeout to
4176 elapse and/or keyboard input to be available.
4179 timeout in seconds, or
4180 zero for no limit, or
4181 -1 means gobble data immediately available but don't wait for any.
4184 an additional duration to wait, measured in microseconds.
4185 If this is nonzero and time_limit is 0, then the timeout
4186 consists of MICROSECS only.
4188 READ_KBD is a lisp value:
4189 0 to ignore keyboard input, or
4190 1 to return when input is available, or
4191 -1 meaning caller will actually read the input, so don't throw to
4192 the quit handler, or
4194 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4195 output that arrives.
4197 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4198 (and gobble terminal input into the buffer if any arrives).
4200 If WAIT_PROC is specified, wait until something arrives from that
4201 process. The return value is true if we read some input from
4204 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4205 (suspending output from other processes). A negative value
4206 means don't run any timers either.
4208 If WAIT_PROC is specified, then the function returns true if we
4209 received input from that process before the timeout elapsed.
4210 Otherwise, return true if we received input from any process. */
4213 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4215 Lisp_Object wait_for_cell
,
4216 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4218 register int channel
, nfds
;
4219 SELECT_TYPE Available
;
4220 SELECT_TYPE Writeok
;
4222 int check_delay
, no_avail
;
4225 EMACS_TIME timeout
, end_time
;
4226 int wait_channel
= -1;
4227 int got_some_input
= 0;
4228 int count
= SPECPDL_INDEX ();
4230 FD_ZERO (&Available
);
4233 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4234 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4235 message ("Blocking call to accept-process-output with quit inhibited!!");
4237 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4238 if (wait_proc
!= NULL
)
4239 wait_channel
= wait_proc
->infd
;
4241 record_unwind_protect (wait_reading_process_output_unwind
,
4242 make_number (waiting_for_user_input_p
));
4243 waiting_for_user_input_p
= read_kbd
;
4245 /* Since we may need to wait several times,
4246 compute the absolute time to return at. */
4247 if (time_limit
|| microsecs
)
4249 EMACS_GET_TIME (end_time
);
4250 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4251 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4256 int timeout_reduced_for_timers
= 0;
4258 /* If calling from keyboard input, do not quit
4259 since we want to return C-g as an input character.
4260 Otherwise, do pending quit if requested. */
4265 process_pending_signals ();
4268 /* Exit now if the cell we're waiting for became non-nil. */
4269 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4272 /* Compute time from now till when time limit is up */
4273 /* Exit if already run out */
4274 if (time_limit
== -1)
4276 /* -1 specified for timeout means
4277 gobble output available now
4278 but don't wait at all. */
4280 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4282 else if (time_limit
|| microsecs
)
4284 EMACS_GET_TIME (timeout
);
4285 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4286 if (EMACS_TIME_NEG_P (timeout
))
4291 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4294 /* Normally we run timers here.
4295 But not if wait_for_cell; in those cases,
4296 the wait is supposed to be short,
4297 and those callers cannot handle running arbitrary Lisp code here. */
4298 if (NILP (wait_for_cell
)
4299 && just_wait_proc
>= 0)
4301 EMACS_TIME timer_delay
;
4305 int old_timers_run
= timers_run
;
4306 struct buffer
*old_buffer
= current_buffer
;
4307 Lisp_Object old_window
= selected_window
;
4309 timer_delay
= timer_check ();
4311 /* If a timer has run, this might have changed buffers
4312 an alike. Make read_key_sequence aware of that. */
4313 if (timers_run
!= old_timers_run
4314 && (old_buffer
!= current_buffer
4315 || !EQ (old_window
, selected_window
))
4316 && waiting_for_user_input_p
== -1)
4317 record_asynch_buffer_change ();
4319 if (timers_run
!= old_timers_run
&& do_display
)
4320 /* We must retry, since a timer may have requeued itself
4321 and that could alter the time_delay. */
4322 redisplay_preserve_echo_area (9);
4326 while (!detect_input_pending ());
4328 /* If there is unread keyboard input, also return. */
4330 && requeued_events_pending_p ())
4333 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4335 EMACS_TIME difference
;
4336 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4337 if (EMACS_TIME_NEG_P (difference
))
4339 timeout
= timer_delay
;
4340 timeout_reduced_for_timers
= 1;
4343 /* If time_limit is -1, we are not going to wait at all. */
4344 else if (time_limit
!= -1)
4346 /* This is so a breakpoint can be put here. */
4347 wait_reading_process_output_1 ();
4351 /* Cause C-g and alarm signals to take immediate action,
4352 and cause input available signals to zero out timeout.
4354 It is important that we do this before checking for process
4355 activity. If we get a SIGCHLD after the explicit checks for
4356 process activity, timeout is the only way we will know. */
4358 set_waiting_for_input (&timeout
);
4360 /* If status of something has changed, and no input is
4361 available, notify the user of the change right away. After
4362 this explicit check, we'll let the SIGCHLD handler zap
4363 timeout to get our attention. */
4364 if (update_tick
!= process_tick
)
4369 if (kbd_on_hold_p ())
4372 Atemp
= input_wait_mask
;
4375 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4376 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4378 #ifdef NON_BLOCKING_CONNECT
4379 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4383 (SELECT_TYPE
*)0, &timeout
)
4386 /* It's okay for us to do this and then continue with
4387 the loop, since timeout has already been zeroed out. */
4388 clear_waiting_for_input ();
4389 status_notify (NULL
);
4390 if (do_display
) redisplay_preserve_echo_area (13);
4394 /* Don't wait for output from a non-running process. Just
4395 read whatever data has already been received. */
4396 if (wait_proc
&& wait_proc
->raw_status_new
)
4397 update_status (wait_proc
);
4399 && ! EQ (wait_proc
->status
, Qrun
)
4400 && ! EQ (wait_proc
->status
, Qconnect
))
4402 int nread
, total_nread
= 0;
4404 clear_waiting_for_input ();
4405 XSETPROCESS (proc
, wait_proc
);
4407 /* Read data from the process, until we exhaust it. */
4408 while (wait_proc
->infd
>= 0)
4410 nread
= read_process_output (proc
, wait_proc
->infd
);
4417 total_nread
+= nread
;
4421 else if (nread
== -1 && EIO
== errno
)
4425 else if (nread
== -1 && EAGAIN
== errno
)
4429 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4433 if (total_nread
> 0 && do_display
)
4434 redisplay_preserve_echo_area (10);
4439 /* Wait till there is something to do */
4441 if (wait_proc
&& just_wait_proc
)
4443 if (wait_proc
->infd
< 0) /* Terminated */
4445 FD_SET (wait_proc
->infd
, &Available
);
4449 else if (!NILP (wait_for_cell
))
4451 Available
= non_process_wait_mask
;
4458 Available
= non_keyboard_wait_mask
;
4460 Available
= input_wait_mask
;
4461 Writeok
= write_mask
;
4462 #ifdef SELECT_CANT_DO_WRITE_MASK
4467 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4470 /* If frame size has changed or the window is newly mapped,
4471 redisplay now, before we start to wait. There is a race
4472 condition here; if a SIGIO arrives between now and the select
4473 and indicates that a frame is trashed, the select may block
4474 displaying a trashed screen. */
4475 if (frame_garbaged
&& do_display
)
4477 clear_waiting_for_input ();
4478 redisplay_preserve_echo_area (11);
4480 set_waiting_for_input (&timeout
);
4484 if (read_kbd
&& detect_input_pending ())
4492 #ifdef ADAPTIVE_READ_BUFFERING
4493 /* Set the timeout for adaptive read buffering if any
4494 process has non-zero read_output_skip and non-zero
4495 read_output_delay, and we are not reading output for a
4496 specific wait_channel. It is not executed if
4497 Vprocess_adaptive_read_buffering is nil. */
4498 if (process_output_skip
&& check_delay
> 0)
4500 int usecs
= EMACS_USECS (timeout
);
4501 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4502 usecs
= READ_OUTPUT_DELAY_MAX
;
4503 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4505 proc
= chan_process
[channel
];
4508 /* Find minimum non-zero read_output_delay among the
4509 processes with non-zero read_output_skip. */
4510 if (XPROCESS (proc
)->read_output_delay
> 0)
4513 if (!XPROCESS (proc
)->read_output_skip
)
4515 FD_CLR (channel
, &Available
);
4516 XPROCESS (proc
)->read_output_skip
= 0;
4517 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4518 usecs
= XPROCESS (proc
)->read_output_delay
;
4521 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4522 process_output_skip
= 0;
4525 #if defined (USE_GTK) || defined (HAVE_GCONF)
4527 #elif defined (HAVE_NS)
4532 (max (max_process_desc
, max_input_desc
) + 1,
4534 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4535 (SELECT_TYPE
*)0, &timeout
);
4538 /* GnuTLS buffers data internally. In lowat mode it leaves
4539 some data in the TCP buffers so that select works, but
4540 with custom pull/push functions we need to check if some
4541 data is available in the buffers manually. */
4543 wait_proc
&& wait_proc
->gnutls_p
/* Check for valid process. */
4544 /* Do we have pending data? */
4545 && gnutls_record_check_pending (wait_proc
->gnutls_state
) > 0)
4548 /* Set to Available. */
4549 FD_SET (wait_proc
->infd
, &Available
);
4556 /* Make C-g and alarm signals set flags again */
4557 clear_waiting_for_input ();
4559 /* If we woke up due to SIGWINCH, actually change size now. */
4560 do_pending_window_change (0);
4562 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4563 /* We wanted the full specified time, so return now. */
4567 if (xerrno
== EINTR
)
4569 else if (xerrno
== EBADF
)
4572 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4573 the child's closure of the pts gives the parent a SIGHUP, and
4574 the ptc file descriptor is automatically closed,
4575 yielding EBADF here or at select() call above.
4576 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4577 in m/ibmrt-aix.h), and here we just ignore the select error.
4578 Cleanup occurs c/o status_notify after SIGCLD. */
4579 no_avail
= 1; /* Cannot depend on values returned */
4585 error ("select error: %s", emacs_strerror (xerrno
));
4590 FD_ZERO (&Available
);
4594 #if 0 /* When polling is used, interrupt_input is 0,
4595 so get_input_pending should read the input.
4596 So this should not be needed. */
4597 /* If we are using polling for input,
4598 and we see input available, make it get read now.
4599 Otherwise it might not actually get read for a second.
4600 And on hpux, since we turn off polling in wait_reading_process_output,
4601 it might never get read at all if we don't spend much time
4602 outside of wait_reading_process_output. */
4603 if (read_kbd
&& interrupt_input
4604 && keyboard_bit_set (&Available
)
4605 && input_polling_used ())
4606 kill (getpid (), SIGALRM
);
4609 /* Check for keyboard input */
4610 /* If there is any, return immediately
4611 to give it higher priority than subprocesses */
4615 int old_timers_run
= timers_run
;
4616 struct buffer
*old_buffer
= current_buffer
;
4617 Lisp_Object old_window
= selected_window
;
4620 if (detect_input_pending_run_timers (do_display
))
4622 swallow_events (do_display
);
4623 if (detect_input_pending_run_timers (do_display
))
4627 /* If a timer has run, this might have changed buffers
4628 an alike. Make read_key_sequence aware of that. */
4629 if (timers_run
!= old_timers_run
4630 && waiting_for_user_input_p
== -1
4631 && (old_buffer
!= current_buffer
4632 || !EQ (old_window
, selected_window
)))
4633 record_asynch_buffer_change ();
4639 /* If there is unread keyboard input, also return. */
4641 && requeued_events_pending_p ())
4644 /* If we are not checking for keyboard input now,
4645 do process events (but don't run any timers).
4646 This is so that X events will be processed.
4647 Otherwise they may have to wait until polling takes place.
4648 That would causes delays in pasting selections, for example.
4650 (We used to do this only if wait_for_cell.) */
4651 if (read_kbd
== 0 && detect_input_pending ())
4653 swallow_events (do_display
);
4654 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4655 if (detect_input_pending ())
4660 /* Exit now if the cell we're waiting for became non-nil. */
4661 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4665 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4666 go read it. This can happen with X on BSD after logging out.
4667 In that case, there really is no input and no SIGIO,
4668 but select says there is input. */
4670 if (read_kbd
&& interrupt_input
4671 && keyboard_bit_set (&Available
) && ! noninteractive
)
4672 kill (getpid (), SIGIO
);
4676 got_some_input
|= nfds
> 0;
4678 /* If checking input just got us a size-change event from X,
4679 obey it now if we should. */
4680 if (read_kbd
|| ! NILP (wait_for_cell
))
4681 do_pending_window_change (0);
4683 /* Check for data from a process. */
4684 if (no_avail
|| nfds
== 0)
4687 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4689 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4690 if (FD_ISSET (channel
, &Available
)
4692 && (d
->condition
& FOR_READ
) != 0)
4693 d
->func (channel
, d
->data
, 1);
4694 if (FD_ISSET (channel
, &write_mask
)
4696 && (d
->condition
& FOR_WRITE
) != 0)
4697 d
->func (channel
, d
->data
, 0);
4700 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4702 if (FD_ISSET (channel
, &Available
)
4703 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4704 && !FD_ISSET (channel
, &non_process_wait_mask
))
4708 /* If waiting for this channel, arrange to return as
4709 soon as no more input to be processed. No more
4711 if (wait_channel
== channel
)
4717 proc
= chan_process
[channel
];
4721 /* If this is a server stream socket, accept connection. */
4722 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4724 server_accept_connection (proc
, channel
);
4728 /* Read data from the process, starting with our
4729 buffered-ahead character if we have one. */
4731 nread
= read_process_output (proc
, channel
);
4734 /* Since read_process_output can run a filter,
4735 which can call accept-process-output,
4736 don't try to read from any other processes
4737 before doing the select again. */
4738 FD_ZERO (&Available
);
4741 redisplay_preserve_echo_area (12);
4744 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4747 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4748 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4750 else if (nread
== -1 && errno
== EAGAIN
)
4754 else if (nread
== -1 && errno
== EAGAIN
)
4756 /* Note that we cannot distinguish between no input
4757 available now and a closed pipe.
4758 With luck, a closed pipe will be accompanied by
4759 subprocess termination and SIGCHLD. */
4760 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4762 #endif /* O_NDELAY */
4763 #endif /* O_NONBLOCK */
4765 /* On some OSs with ptys, when the process on one end of
4766 a pty exits, the other end gets an error reading with
4767 errno = EIO instead of getting an EOF (0 bytes read).
4768 Therefore, if we get an error reading and errno =
4769 EIO, just continue, because the child process has
4770 exited and should clean itself up soon (e.g. when we
4773 However, it has been known to happen that the SIGCHLD
4774 got lost. So raise the signal again just in case.
4776 else if (nread
== -1 && errno
== EIO
)
4778 /* Clear the descriptor now, so we only raise the
4779 signal once. Don't do this if `process' is only
4781 if (XPROCESS (proc
)->pid
!= -2)
4783 FD_CLR (channel
, &input_wait_mask
);
4784 FD_CLR (channel
, &non_keyboard_wait_mask
);
4786 kill (getpid (), SIGCHLD
);
4789 #endif /* HAVE_PTYS */
4790 /* If we can detect process termination, don't consider the process
4791 gone just because its pipe is closed. */
4793 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4798 /* Preserve status of processes already terminated. */
4799 XPROCESS (proc
)->tick
= ++process_tick
;
4800 deactivate_process (proc
);
4801 if (XPROCESS (proc
)->raw_status_new
)
4802 update_status (XPROCESS (proc
));
4803 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4804 XPROCESS (proc
)->status
4805 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4808 #ifdef NON_BLOCKING_CONNECT
4809 if (FD_ISSET (channel
, &Writeok
)
4810 && FD_ISSET (channel
, &connect_wait_mask
))
4812 struct Lisp_Process
*p
;
4814 FD_CLR (channel
, &connect_wait_mask
);
4815 FD_CLR (channel
, &write_mask
);
4816 if (--num_pending_connects
< 0)
4819 proc
= chan_process
[channel
];
4823 p
= XPROCESS (proc
);
4826 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4827 So only use it on systems where it is known to work. */
4829 socklen_t xlen
= sizeof (xerrno
);
4830 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4835 struct sockaddr pname
;
4836 int pnamelen
= sizeof (pname
);
4838 /* If connection failed, getpeername will fail. */
4840 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4842 /* Obtain connect failure code through error slippage. */
4845 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4852 p
->tick
= ++process_tick
;
4853 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4854 deactivate_process (proc
);
4859 /* Execute the sentinel here. If we had relied on
4860 status_notify to do it later, it will read input
4861 from the process before calling the sentinel. */
4862 exec_sentinel (proc
, build_string ("open\n"));
4863 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4865 FD_SET (p
->infd
, &input_wait_mask
);
4866 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4870 #endif /* NON_BLOCKING_CONNECT */
4871 } /* end for each file descriptor */
4872 } /* end while exit conditions not met */
4874 unbind_to (count
, Qnil
);
4876 /* If calling from keyboard input, do not quit
4877 since we want to return C-g as an input character.
4878 Otherwise, do pending quit if requested. */
4881 /* Prevent input_pending from remaining set if we quit. */
4882 clear_input_pending ();
4886 return got_some_input
;
4889 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4892 read_process_output_call (Lisp_Object fun_and_args
)
4894 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4898 read_process_output_error_handler (Lisp_Object error_val
)
4900 cmd_error_internal (error_val
, "error in process filter: ");
4902 update_echo_area ();
4903 Fsleep_for (make_number (2), Qnil
);
4907 /* Read pending output from the process channel,
4908 starting with our buffered-ahead character if we have one.
4909 Yield number of decoded characters read.
4911 This function reads at most 4096 characters.
4912 If you want to read all available subprocess output,
4913 you must call it repeatedly until it returns zero.
4915 The characters read are decoded according to PROC's coding-system
4919 read_process_output (Lisp_Object proc
, register int channel
)
4921 register ssize_t nbytes
;
4923 register Lisp_Object outstream
;
4924 register struct Lisp_Process
*p
= XPROCESS (proc
);
4925 register EMACS_INT opoint
;
4926 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4927 int carryover
= p
->decoding_carryover
;
4929 int count
= SPECPDL_INDEX ();
4930 Lisp_Object odeactivate
;
4932 chars
= (char *) alloca (carryover
+ readmax
);
4934 /* See the comment above. */
4935 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4937 #ifdef DATAGRAM_SOCKETS
4938 /* We have a working select, so proc_buffered_char is always -1. */
4939 if (DATAGRAM_CHAN_P (channel
))
4941 socklen_t len
= datagram_address
[channel
].len
;
4942 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4943 0, datagram_address
[channel
].sa
, &len
);
4948 int buffered
= 0 <= proc_buffered_char
[channel
];
4951 chars
[carryover
] = proc_buffered_char
[channel
];
4952 proc_buffered_char
[channel
] = -1;
4955 if (XPROCESS (proc
)->gnutls_p
)
4956 nbytes
= emacs_gnutls_read (channel
, XPROCESS (proc
),
4957 chars
+ carryover
+ buffered
,
4958 readmax
- buffered
);
4961 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
4962 readmax
- buffered
);
4963 #ifdef ADAPTIVE_READ_BUFFERING
4964 if (nbytes
> 0 && p
->adaptive_read_buffering
)
4966 int delay
= p
->read_output_delay
;
4969 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4972 process_output_delay_count
++;
4973 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
4976 else if (delay
> 0 && nbytes
== readmax
- buffered
)
4978 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
4980 process_output_delay_count
--;
4982 p
->read_output_delay
= delay
;
4985 p
->read_output_skip
= 1;
4986 process_output_skip
= 1;
4991 nbytes
+= buffered
&& nbytes
<= 0;
4994 p
->decoding_carryover
= 0;
4996 /* At this point, NBYTES holds number of bytes just received
4997 (including the one in proc_buffered_char[channel]). */
5000 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5002 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5005 /* Now set NBYTES how many bytes we must decode. */
5006 nbytes
+= carryover
;
5008 odeactivate
= Vdeactivate_mark
;
5009 /* There's no good reason to let process filters change the current
5010 buffer, and many callers of accept-process-output, sit-for, and
5011 friends don't expect current-buffer to be changed from under them. */
5012 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5014 /* Read and dispose of the process output. */
5015 outstream
= p
->filter
;
5016 if (!NILP (outstream
))
5019 int outer_running_asynch_code
= running_asynch_code
;
5020 int waiting
= waiting_for_user_input_p
;
5022 /* No need to gcpro these, because all we do with them later
5023 is test them for EQness, and none of them should be a string. */
5025 Lisp_Object obuffer
, okeymap
;
5026 XSETBUFFER (obuffer
, current_buffer
);
5027 okeymap
= BVAR (current_buffer
, keymap
);
5030 /* We inhibit quit here instead of just catching it so that
5031 hitting ^G when a filter happens to be running won't screw
5033 specbind (Qinhibit_quit
, Qt
);
5034 specbind (Qlast_nonmenu_event
, Qt
);
5036 /* In case we get recursively called,
5037 and we already saved the match data nonrecursively,
5038 save the same match data in safely recursive fashion. */
5039 if (outer_running_asynch_code
)
5042 /* Don't clobber the CURRENT match data, either! */
5043 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5044 restore_search_regs ();
5045 record_unwind_save_match_data ();
5046 Fset_match_data (tem
, Qt
);
5049 /* For speed, if a search happens within this code,
5050 save the match data in a special nonrecursive fashion. */
5051 running_asynch_code
= 1;
5053 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5054 text
= coding
->dst_object
;
5055 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5056 /* A new coding system might be found. */
5057 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5059 p
->decode_coding_system
= Vlast_coding_system_used
;
5061 /* Don't call setup_coding_system for
5062 proc_decode_coding_system[channel] here. It is done in
5063 detect_coding called via decode_coding above. */
5065 /* If a coding system for encoding is not yet decided, we set
5066 it as the same as coding-system for decoding.
5068 But, before doing that we must check if
5069 proc_encode_coding_system[p->outfd] surely points to a
5070 valid memory because p->outfd will be changed once EOF is
5071 sent to the process. */
5072 if (NILP (p
->encode_coding_system
)
5073 && proc_encode_coding_system
[p
->outfd
])
5075 p
->encode_coding_system
5076 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5077 setup_coding_system (p
->encode_coding_system
,
5078 proc_encode_coding_system
[p
->outfd
]);
5082 if (coding
->carryover_bytes
> 0)
5084 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5085 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5086 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5087 coding
->carryover_bytes
);
5088 p
->decoding_carryover
= coding
->carryover_bytes
;
5090 if (SBYTES (text
) > 0)
5091 internal_condition_case_1 (read_process_output_call
,
5093 Fcons (proc
, Fcons (text
, Qnil
))),
5094 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5095 read_process_output_error_handler
);
5097 /* If we saved the match data nonrecursively, restore it now. */
5098 restore_search_regs ();
5099 running_asynch_code
= outer_running_asynch_code
;
5101 /* Restore waiting_for_user_input_p as it was
5102 when we were called, in case the filter clobbered it. */
5103 waiting_for_user_input_p
= waiting
;
5105 #if 0 /* Call record_asynch_buffer_change unconditionally,
5106 because we might have changed minor modes or other things
5107 that affect key bindings. */
5108 if (! EQ (Fcurrent_buffer (), obuffer
)
5109 || ! EQ (current_buffer
->keymap
, okeymap
))
5111 /* But do it only if the caller is actually going to read events.
5112 Otherwise there's no need to make him wake up, and it could
5113 cause trouble (for example it would make sit_for return). */
5114 if (waiting_for_user_input_p
== -1)
5115 record_asynch_buffer_change ();
5118 /* If no filter, write into buffer if it isn't dead. */
5119 else if (!NILP (p
->buffer
) && !NILP (BVAR (XBUFFER (p
->buffer
), name
)))
5121 Lisp_Object old_read_only
;
5122 EMACS_INT old_begv
, old_zv
;
5123 EMACS_INT old_begv_byte
, old_zv_byte
;
5124 EMACS_INT before
, before_byte
;
5125 EMACS_INT opoint_byte
;
5129 Fset_buffer (p
->buffer
);
5131 opoint_byte
= PT_BYTE
;
5132 old_read_only
= BVAR (current_buffer
, read_only
);
5135 old_begv_byte
= BEGV_BYTE
;
5136 old_zv_byte
= ZV_BYTE
;
5138 BVAR (current_buffer
, read_only
) = Qnil
;
5140 /* Insert new output into buffer
5141 at the current end-of-output marker,
5142 thus preserving logical ordering of input and output. */
5143 if (XMARKER (p
->mark
)->buffer
)
5144 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5145 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5148 SET_PT_BOTH (ZV
, ZV_BYTE
);
5150 before_byte
= PT_BYTE
;
5152 /* If the output marker is outside of the visible region, save
5153 the restriction and widen. */
5154 if (! (BEGV
<= PT
&& PT
<= ZV
))
5157 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5158 text
= coding
->dst_object
;
5159 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5160 /* A new coding system might be found. See the comment in the
5161 similar code in the previous `if' block. */
5162 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5164 p
->decode_coding_system
= Vlast_coding_system_used
;
5165 if (NILP (p
->encode_coding_system
)
5166 && proc_encode_coding_system
[p
->outfd
])
5168 p
->encode_coding_system
5169 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5170 setup_coding_system (p
->encode_coding_system
,
5171 proc_encode_coding_system
[p
->outfd
]);
5174 if (coding
->carryover_bytes
> 0)
5176 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5177 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5178 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5179 coding
->carryover_bytes
);
5180 p
->decoding_carryover
= coding
->carryover_bytes
;
5182 /* Adjust the multibyteness of TEXT to that of the buffer. */
5183 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5184 != ! STRING_MULTIBYTE (text
))
5185 text
= (STRING_MULTIBYTE (text
)
5186 ? Fstring_as_unibyte (text
)
5187 : Fstring_to_multibyte (text
));
5188 /* Insert before markers in case we are inserting where
5189 the buffer's mark is, and the user's next command is Meta-y. */
5190 insert_from_string_before_markers (text
, 0, 0,
5191 SCHARS (text
), SBYTES (text
), 0);
5193 /* Make sure the process marker's position is valid when the
5194 process buffer is changed in the signal_after_change above.
5195 W3 is known to do that. */
5196 if (BUFFERP (p
->buffer
)
5197 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5198 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5200 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5202 update_mode_lines
++;
5204 /* Make sure opoint and the old restrictions
5205 float ahead of any new text just as point would. */
5206 if (opoint
>= before
)
5208 opoint
+= PT
- before
;
5209 opoint_byte
+= PT_BYTE
- before_byte
;
5211 if (old_begv
> before
)
5213 old_begv
+= PT
- before
;
5214 old_begv_byte
+= PT_BYTE
- before_byte
;
5216 if (old_zv
>= before
)
5218 old_zv
+= PT
- before
;
5219 old_zv_byte
+= PT_BYTE
- before_byte
;
5222 /* If the restriction isn't what it should be, set it. */
5223 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5224 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5227 BVAR (current_buffer
, read_only
) = old_read_only
;
5228 SET_PT_BOTH (opoint
, opoint_byte
);
5230 /* Handling the process output should not deactivate the mark. */
5231 Vdeactivate_mark
= odeactivate
;
5233 unbind_to (count
, Qnil
);
5237 /* Sending data to subprocess */
5239 static jmp_buf send_process_frame
;
5240 static Lisp_Object process_sent_to
;
5242 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
5243 static void send_process_trap (int) NO_RETURN
;
5247 send_process_trap (int ignore
)
5249 SIGNAL_THREAD_CHECK (SIGPIPE
);
5250 sigunblock (sigmask (SIGPIPE
));
5251 longjmp (send_process_frame
, 1);
5254 /* Send some data to process PROC.
5255 BUF is the beginning of the data; LEN is the number of characters.
5256 OBJECT is the Lisp object that the data comes from. If OBJECT is
5257 nil or t, it means that the data comes from C string.
5259 If OBJECT is not nil, the data is encoded by PROC's coding-system
5260 for encoding before it is sent.
5262 This function can evaluate Lisp code and can garbage collect. */
5265 send_process (volatile Lisp_Object proc
, const char *volatile buf
,
5266 volatile EMACS_INT len
, volatile Lisp_Object object
)
5268 /* Use volatile to protect variables from being clobbered by longjmp. */
5269 struct Lisp_Process
*p
= XPROCESS (proc
);
5271 struct coding_system
*coding
;
5272 struct gcpro gcpro1
;
5273 void (*volatile old_sigpipe
) (int);
5277 if (p
->raw_status_new
)
5279 if (! EQ (p
->status
, Qrun
))
5280 error ("Process %s not running", SDATA (p
->name
));
5282 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5284 coding
= proc_encode_coding_system
[p
->outfd
];
5285 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5287 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5288 || (BUFFERP (object
)
5289 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5292 p
->encode_coding_system
5293 = complement_process_encoding_system (p
->encode_coding_system
);
5294 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5296 /* The coding system for encoding was changed to raw-text
5297 because we sent a unibyte text previously. Now we are
5298 sending a multibyte text, thus we must encode it by the
5299 original coding system specified for the current process.
5301 Another reason we comming here is that the coding system
5302 was just complemented and new one was returned by
5303 complement_process_encoding_system. */
5304 setup_coding_system (p
->encode_coding_system
, coding
);
5305 Vlast_coding_system_used
= p
->encode_coding_system
;
5307 coding
->src_multibyte
= 1;
5311 /* For sending a unibyte text, character code conversion should
5312 not take place but EOL conversion should. So, setup raw-text
5313 or one of the subsidiary if we have not yet done it. */
5314 if (CODING_REQUIRE_ENCODING (coding
))
5316 if (CODING_REQUIRE_FLUSHING (coding
))
5318 /* But, before changing the coding, we must flush out data. */
5319 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5320 send_process (proc
, "", 0, Qt
);
5321 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5323 setup_coding_system (raw_text_coding_system
5324 (Vlast_coding_system_used
),
5326 coding
->src_multibyte
= 0;
5329 coding
->dst_multibyte
= 0;
5331 if (CODING_REQUIRE_ENCODING (coding
))
5333 coding
->dst_object
= Qt
;
5334 if (BUFFERP (object
))
5336 EMACS_INT from_byte
, from
, to
;
5337 EMACS_INT save_pt
, save_pt_byte
;
5338 struct buffer
*cur
= current_buffer
;
5340 set_buffer_internal (XBUFFER (object
));
5341 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5343 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5344 from
= BYTE_TO_CHAR (from_byte
);
5345 to
= BYTE_TO_CHAR (from_byte
+ len
);
5346 TEMP_SET_PT_BOTH (from
, from_byte
);
5347 encode_coding_object (coding
, object
, from
, from_byte
,
5348 to
, from_byte
+ len
, Qt
);
5349 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5350 set_buffer_internal (cur
);
5352 else if (STRINGP (object
))
5354 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5355 SBYTES (object
), Qt
);
5359 coding
->dst_object
= make_unibyte_string (buf
, len
);
5360 coding
->produced
= len
;
5363 len
= coding
->produced
;
5364 object
= coding
->dst_object
;
5365 buf
= SSDATA (object
);
5368 if (pty_max_bytes
== 0)
5370 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5371 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5372 if (pty_max_bytes
< 0)
5373 pty_max_bytes
= 250;
5375 pty_max_bytes
= 250;
5377 /* Deduct one, to leave space for the eof. */
5381 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5382 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5383 when returning with longjmp despite being declared volatile. */
5384 if (!setjmp (send_process_frame
))
5386 p
= XPROCESS (proc
); /* Repair any setjmp clobbering. */
5388 process_sent_to
= proc
;
5391 EMACS_INT
this = len
;
5393 /* Send this batch, using one or more write calls. */
5396 EMACS_INT written
= 0;
5397 int outfd
= p
->outfd
;
5398 old_sigpipe
= (void (*) (int)) signal (SIGPIPE
, send_process_trap
);
5399 #ifdef DATAGRAM_SOCKETS
5400 if (DATAGRAM_CHAN_P (outfd
))
5402 rv
= sendto (outfd
, buf
, this,
5403 0, datagram_address
[outfd
].sa
,
5404 datagram_address
[outfd
].len
);
5407 else if (errno
== EMSGSIZE
)
5409 signal (SIGPIPE
, old_sigpipe
);
5410 report_file_error ("sending datagram",
5411 Fcons (proc
, Qnil
));
5418 if (XPROCESS (proc
)->gnutls_p
)
5419 written
= emacs_gnutls_write (outfd
,
5424 written
= emacs_write (outfd
, buf
, this);
5425 rv
= (written
? 0 : -1);
5426 #ifdef ADAPTIVE_READ_BUFFERING
5427 if (p
->read_output_delay
> 0
5428 && p
->adaptive_read_buffering
== 1)
5430 p
->read_output_delay
= 0;
5431 process_output_delay_count
--;
5432 p
->read_output_skip
= 0;
5436 signal (SIGPIPE
, old_sigpipe
);
5442 || errno
== EWOULDBLOCK
5448 /* Buffer is full. Wait, accepting input;
5449 that may allow the program
5450 to finish doing output and read more. */
5452 EMACS_INT offset
= 0;
5454 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5455 /* A gross hack to work around a bug in FreeBSD.
5456 In the following sequence, read(2) returns
5460 write(2) 954 bytes, get EAGAIN
5461 read(2) 1024 bytes in process_read_output
5462 read(2) 11 bytes in process_read_output
5464 That is, read(2) returns more bytes than have
5465 ever been written successfully. The 1033 bytes
5466 read are the 1022 bytes written successfully
5467 after processing (for example with CRs added if
5468 the terminal is set up that way which it is
5469 here). The same bytes will be seen again in a
5470 later read(2), without the CRs. */
5472 if (errno
== EAGAIN
)
5475 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5477 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5479 /* Running filters might relocate buffers or strings.
5480 Arrange to relocate BUF. */
5481 if (BUFFERP (object
))
5482 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
),
5483 (unsigned char *) buf
);
5484 else if (STRINGP (object
))
5485 offset
= buf
- SSDATA (object
);
5487 #ifdef EMACS_HAS_USECS
5488 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5490 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5493 if (BUFFERP (object
))
5494 buf
= (char *) BUF_BYTE_ADDRESS (XBUFFER (object
),
5496 else if (STRINGP (object
))
5497 buf
= offset
+ SSDATA (object
);
5500 /* This is a real error. */
5501 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5511 signal (SIGPIPE
, old_sigpipe
);
5512 proc
= process_sent_to
;
5513 p
= XPROCESS (proc
);
5514 p
->raw_status_new
= 0;
5515 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5516 p
->tick
= ++process_tick
;
5517 deactivate_process (proc
);
5518 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5524 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5526 doc
: /* Send current contents of region as input to PROCESS.
5527 PROCESS may be a process, a buffer, the name of a process or buffer, or
5528 nil, indicating the current buffer's process.
5529 Called from program, takes three arguments, PROCESS, START and END.
5530 If the region is more than 500 characters long,
5531 it is sent in several bunches. This may happen even for shorter regions.
5532 Output from processes can arrive in between bunches. */)
5533 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5536 EMACS_INT start1
, end1
;
5538 proc
= get_process (process
);
5539 validate_region (&start
, &end
);
5541 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5542 move_gap (XINT (start
));
5544 start1
= CHAR_TO_BYTE (XINT (start
));
5545 end1
= CHAR_TO_BYTE (XINT (end
));
5546 send_process (proc
, (char *) BYTE_POS_ADDR (start1
), end1
- start1
,
5547 Fcurrent_buffer ());
5552 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5554 doc
: /* Send PROCESS the contents of STRING as input.
5555 PROCESS may be a process, a buffer, the name of a process or buffer, or
5556 nil, indicating the current buffer's process.
5557 If STRING is more than 500 characters long,
5558 it is sent in several bunches. This may happen even for shorter strings.
5559 Output from processes can arrive in between bunches. */)
5560 (Lisp_Object process
, Lisp_Object string
)
5563 CHECK_STRING (string
);
5564 proc
= get_process (process
);
5565 send_process (proc
, SSDATA (string
),
5566 SBYTES (string
), string
);
5570 /* Return the foreground process group for the tty/pty that
5571 the process P uses. */
5573 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5578 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5581 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5582 master side. Try the slave side. */
5583 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5587 ioctl (fd
, TIOCGPGRP
, &gid
);
5591 #endif /* defined (TIOCGPGRP ) */
5596 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5597 Sprocess_running_child_p
, 0, 1, 0,
5598 doc
: /* Return t if PROCESS has given the terminal to a child.
5599 If the operating system does not make it possible to find out,
5600 return t unconditionally. */)
5601 (Lisp_Object process
)
5603 /* Initialize in case ioctl doesn't exist or gives an error,
5604 in a way that will cause returning t. */
5607 struct Lisp_Process
*p
;
5609 proc
= get_process (process
);
5610 p
= XPROCESS (proc
);
5612 if (!EQ (p
->type
, Qreal
))
5613 error ("Process %s is not a subprocess",
5616 error ("Process %s is not active",
5619 gid
= emacs_get_tty_pgrp (p
);
5626 /* send a signal number SIGNO to PROCESS.
5627 If CURRENT_GROUP is t, that means send to the process group
5628 that currently owns the terminal being used to communicate with PROCESS.
5629 This is used for various commands in shell mode.
5630 If CURRENT_GROUP is lambda, that means send to the process group
5631 that currently owns the terminal, but only if it is NOT the shell itself.
5633 If NOMSG is zero, insert signal-announcements into process's buffers
5636 If we can, we try to signal PROCESS by sending control characters
5637 down the pty. This allows us to signal inferiors who have changed
5638 their uid, for which killpg would return an EPERM error. */
5641 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5645 register struct Lisp_Process
*p
;
5649 proc
= get_process (process
);
5650 p
= XPROCESS (proc
);
5652 if (!EQ (p
->type
, Qreal
))
5653 error ("Process %s is not a subprocess",
5656 error ("Process %s is not active",
5660 current_group
= Qnil
;
5662 /* If we are using pgrps, get a pgrp number and make it negative. */
5663 if (NILP (current_group
))
5664 /* Send the signal to the shell's process group. */
5668 #ifdef SIGNALS_VIA_CHARACTERS
5669 /* If possible, send signals to the entire pgrp
5670 by sending an input character to it. */
5673 cc_t
*sig_char
= NULL
;
5675 tcgetattr (p
->infd
, &t
);
5680 sig_char
= &t
.c_cc
[VINTR
];
5684 sig_char
= &t
.c_cc
[VQUIT
];
5688 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5689 sig_char
= &t
.c_cc
[VSWTCH
];
5691 sig_char
= &t
.c_cc
[VSUSP
];
5696 if (sig_char
&& *sig_char
!= CDISABLE
)
5698 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5701 /* If we can't send the signal with a character,
5702 fall through and send it another way. */
5704 /* The code above may fall through if it can't
5705 handle the signal. */
5706 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5709 /* Get the current pgrp using the tty itself, if we have that.
5710 Otherwise, use the pty to get the pgrp.
5711 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5712 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5713 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5714 His patch indicates that if TIOCGPGRP returns an error, then
5715 we should just assume that p->pid is also the process group id. */
5717 gid
= emacs_get_tty_pgrp (p
);
5720 /* If we can't get the information, assume
5721 the shell owns the tty. */
5724 /* It is not clear whether anything really can set GID to -1.
5725 Perhaps on some system one of those ioctls can or could do so.
5726 Or perhaps this is vestigial. */
5729 #else /* ! defined (TIOCGPGRP ) */
5730 /* Can't select pgrps on this system, so we know that
5731 the child itself heads the pgrp. */
5733 #endif /* ! defined (TIOCGPGRP ) */
5735 /* If current_group is lambda, and the shell owns the terminal,
5736 don't send any signal. */
5737 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5745 p
->raw_status_new
= 0;
5747 p
->tick
= ++process_tick
;
5750 status_notify (NULL
);
5751 redisplay_preserve_echo_area (13);
5754 #endif /* ! defined (SIGCONT) */
5758 flush_pending_output (p
->infd
);
5762 /* If we don't have process groups, send the signal to the immediate
5763 subprocess. That isn't really right, but it's better than any
5764 obvious alternative. */
5767 kill (p
->pid
, signo
);
5771 /* gid may be a pid, or minus a pgrp's number */
5773 if (!NILP (current_group
))
5775 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5776 EMACS_KILLPG (gid
, signo
);
5783 #else /* ! defined (TIOCSIGSEND) */
5784 EMACS_KILLPG (gid
, signo
);
5785 #endif /* ! defined (TIOCSIGSEND) */
5788 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5789 doc
: /* Interrupt process PROCESS.
5790 PROCESS may be a process, a buffer, or the name of a process or buffer.
5791 No arg or nil means current buffer's process.
5792 Second arg CURRENT-GROUP non-nil means send signal to
5793 the current process-group of the process's controlling terminal
5794 rather than to the process's own process group.
5795 If the process is a shell, this means interrupt current subjob
5796 rather than the shell.
5798 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5799 don't send the signal. */)
5800 (Lisp_Object process
, Lisp_Object current_group
)
5802 process_send_signal (process
, SIGINT
, current_group
, 0);
5806 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5807 doc
: /* Kill process PROCESS. May be process or name of one.
5808 See function `interrupt-process' for more details on usage. */)
5809 (Lisp_Object process
, Lisp_Object current_group
)
5811 process_send_signal (process
, SIGKILL
, current_group
, 0);
5815 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5816 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5817 See function `interrupt-process' for more details on usage. */)
5818 (Lisp_Object process
, Lisp_Object current_group
)
5820 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5824 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5825 doc
: /* Stop process PROCESS. May be process or name of one.
5826 See function `interrupt-process' for more details on usage.
5827 If PROCESS is a network or serial process, inhibit handling of incoming
5829 (Lisp_Object process
, Lisp_Object current_group
)
5831 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5833 struct Lisp_Process
*p
;
5835 p
= XPROCESS (process
);
5836 if (NILP (p
->command
)
5839 FD_CLR (p
->infd
, &input_wait_mask
);
5840 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5846 error ("No SIGTSTP support");
5848 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5853 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5854 doc
: /* Continue process PROCESS. May be process or name of one.
5855 See function `interrupt-process' for more details on usage.
5856 If PROCESS is a network or serial process, resume handling of incoming
5858 (Lisp_Object process
, Lisp_Object current_group
)
5860 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5862 struct Lisp_Process
*p
;
5864 p
= XPROCESS (process
);
5865 if (EQ (p
->command
, Qt
)
5867 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5869 FD_SET (p
->infd
, &input_wait_mask
);
5870 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5872 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5873 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5874 #else /* not WINDOWSNT */
5875 tcflush (p
->infd
, TCIFLUSH
);
5876 #endif /* not WINDOWSNT */
5882 process_send_signal (process
, SIGCONT
, current_group
, 0);
5884 error ("No SIGCONT support");
5889 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5890 2, 2, "sProcess (name or number): \nnSignal code: ",
5891 doc
: /* Send PROCESS the signal with code SIGCODE.
5892 PROCESS may also be a number specifying the process id of the
5893 process to signal; in this case, the process need not be a child of
5895 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5896 (Lisp_Object process
, Lisp_Object sigcode
)
5900 if (INTEGERP (process
))
5902 pid
= XINT (process
);
5906 if (FLOATP (process
))
5908 pid
= (pid_t
) XFLOAT_DATA (process
);
5912 if (STRINGP (process
))
5915 if (tem
= Fget_process (process
), NILP (tem
))
5917 pid
= XINT (Fstring_to_number (process
, make_number (10)));
5924 process
= get_process (process
);
5929 CHECK_PROCESS (process
);
5930 pid
= XPROCESS (process
)->pid
;
5932 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5936 #define parse_signal(NAME, VALUE) \
5937 else if (!xstrcasecmp (name, NAME)) \
5938 XSETINT (sigcode, VALUE)
5940 if (INTEGERP (sigcode
))
5946 CHECK_SYMBOL (sigcode
);
5947 name
= SSDATA (SYMBOL_NAME (sigcode
));
5949 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5955 parse_signal ("usr1", SIGUSR1
);
5958 parse_signal ("usr2", SIGUSR2
);
5961 parse_signal ("term", SIGTERM
);
5964 parse_signal ("hup", SIGHUP
);
5967 parse_signal ("int", SIGINT
);
5970 parse_signal ("quit", SIGQUIT
);
5973 parse_signal ("ill", SIGILL
);
5976 parse_signal ("abrt", SIGABRT
);
5979 parse_signal ("emt", SIGEMT
);
5982 parse_signal ("kill", SIGKILL
);
5985 parse_signal ("fpe", SIGFPE
);
5988 parse_signal ("bus", SIGBUS
);
5991 parse_signal ("segv", SIGSEGV
);
5994 parse_signal ("sys", SIGSYS
);
5997 parse_signal ("pipe", SIGPIPE
);
6000 parse_signal ("alrm", SIGALRM
);
6003 parse_signal ("urg", SIGURG
);
6006 parse_signal ("stop", SIGSTOP
);
6009 parse_signal ("tstp", SIGTSTP
);
6012 parse_signal ("cont", SIGCONT
);
6015 parse_signal ("chld", SIGCHLD
);
6018 parse_signal ("ttin", SIGTTIN
);
6021 parse_signal ("ttou", SIGTTOU
);
6024 parse_signal ("io", SIGIO
);
6027 parse_signal ("xcpu", SIGXCPU
);
6030 parse_signal ("xfsz", SIGXFSZ
);
6033 parse_signal ("vtalrm", SIGVTALRM
);
6036 parse_signal ("prof", SIGPROF
);
6039 parse_signal ("winch", SIGWINCH
);
6042 parse_signal ("info", SIGINFO
);
6045 error ("Undefined signal name %s", name
);
6050 return make_number (kill (pid
, XINT (sigcode
)));
6053 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6054 doc
: /* Make PROCESS see end-of-file in its input.
6055 EOF comes after any text already sent to it.
6056 PROCESS may be a process, a buffer, the name of a process or buffer, or
6057 nil, indicating the current buffer's process.
6058 If PROCESS is a network connection, or is a process communicating
6059 through a pipe (as opposed to a pty), then you cannot send any more
6060 text to PROCESS after you call this function.
6061 If PROCESS is a serial process, wait until all output written to the
6062 process has been transmitted to the serial port. */)
6063 (Lisp_Object process
)
6066 struct coding_system
*coding
;
6068 if (DATAGRAM_CONN_P (process
))
6071 proc
= get_process (process
);
6072 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6074 /* Make sure the process is really alive. */
6075 if (XPROCESS (proc
)->raw_status_new
)
6076 update_status (XPROCESS (proc
));
6077 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6078 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6080 if (CODING_REQUIRE_FLUSHING (coding
))
6082 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6083 send_process (proc
, "", 0, Qnil
);
6086 if (XPROCESS (proc
)->pty_flag
)
6087 send_process (proc
, "\004", 1, Qnil
);
6088 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6091 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6092 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6093 #endif /* not WINDOWSNT */
6094 /* Do nothing on Windows because writes are blocking. */
6098 int old_outfd
, new_outfd
;
6100 #ifdef HAVE_SHUTDOWN
6101 /* If this is a network connection, or socketpair is used
6102 for communication with the subprocess, call shutdown to cause EOF.
6103 (In some old system, shutdown to socketpair doesn't work.
6104 Then we just can't win.) */
6105 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6106 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6107 shutdown (XPROCESS (proc
)->outfd
, 1);
6108 /* In case of socketpair, outfd == infd, so don't close it. */
6109 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6110 emacs_close (XPROCESS (proc
)->outfd
);
6111 #else /* not HAVE_SHUTDOWN */
6112 emacs_close (XPROCESS (proc
)->outfd
);
6113 #endif /* not HAVE_SHUTDOWN */
6114 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6117 old_outfd
= XPROCESS (proc
)->outfd
;
6119 if (!proc_encode_coding_system
[new_outfd
])
6120 proc_encode_coding_system
[new_outfd
]
6121 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6122 memcpy (proc_encode_coding_system
[new_outfd
],
6123 proc_encode_coding_system
[old_outfd
],
6124 sizeof (struct coding_system
));
6125 memset (proc_encode_coding_system
[old_outfd
], 0,
6126 sizeof (struct coding_system
));
6128 XPROCESS (proc
)->outfd
= new_outfd
;
6133 /* On receipt of a signal that a child status has changed, loop asking
6134 about children with changed statuses until the system says there
6137 All we do is change the status; we do not run sentinels or print
6138 notifications. That is saved for the next time keyboard input is
6139 done, in order to avoid timing errors.
6141 ** WARNING: this can be called during garbage collection.
6142 Therefore, it must not be fooled by the presence of mark bits in
6145 ** USG WARNING: Although it is not obvious from the documentation
6146 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6147 signal() before executing at least one wait(), otherwise the
6148 handler will be called again, resulting in an infinite loop. The
6149 relevant portion of the documentation reads "SIGCLD signals will be
6150 queued and the signal-catching function will be continually
6151 reentered until the queue is empty". Invoking signal() causes the
6152 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6155 ** Malloc WARNING: This should never call malloc either directly or
6156 indirectly; if it does, that is a bug */
6160 sigchld_handler (int signo
)
6162 int old_errno
= errno
;
6164 struct Lisp_Process
*p
;
6166 SIGNAL_THREAD_CHECK (signo
);
6177 #endif /* no WUNTRACED */
6178 /* Keep trying to get a status until we get a definitive result. */
6182 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6184 while (pid
< 0 && errno
== EINTR
);
6188 /* PID == 0 means no processes found, PID == -1 means a real
6189 failure. We have done all our job, so return. */
6196 #endif /* no WNOHANG */
6198 /* Find the process that signaled us, and record its status. */
6200 /* The process can have been deleted by Fdelete_process. */
6201 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6203 Lisp_Object xpid
= XCAR (tail
);
6204 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6205 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6207 XSETCAR (tail
, Qnil
);
6208 goto sigchld_end_of_loop
;
6212 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6214 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6216 proc
= XCDR (XCAR (tail
));
6217 p
= XPROCESS (proc
);
6218 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6223 /* Look for an asynchronous process whose pid hasn't been filled
6226 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6228 proc
= XCDR (XCAR (tail
));
6229 p
= XPROCESS (proc
);
6235 /* Change the status of the process that was found. */
6238 int clear_desc_flag
= 0;
6240 p
->tick
= ++process_tick
;
6242 p
->raw_status_new
= 1;
6244 /* If process has terminated, stop waiting for its output. */
6245 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6247 clear_desc_flag
= 1;
6249 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6250 if (clear_desc_flag
)
6252 FD_CLR (p
->infd
, &input_wait_mask
);
6253 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6256 /* Tell wait_reading_process_output that it needs to wake up and
6258 if (input_available_clear_time
)
6259 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6262 /* There was no asynchronous process found for that pid: we have
6263 a synchronous process. */
6266 synch_process_alive
= 0;
6268 /* Report the status of the synchronous process. */
6270 synch_process_retcode
= WRETCODE (w
);
6271 else if (WIFSIGNALED (w
))
6272 synch_process_termsig
= WTERMSIG (w
);
6274 /* Tell wait_reading_process_output that it needs to wake up and
6276 if (input_available_clear_time
)
6277 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6280 sigchld_end_of_loop
:
6283 /* On some systems, we must return right away.
6284 If any more processes want to signal us, we will
6286 Otherwise (on systems that have WNOHANG), loop around
6287 to use up all the processes that have something to tell us. */
6288 #if (defined WINDOWSNT \
6289 || (defined USG && !defined GNU_LINUX \
6290 && !(defined HPUX && defined WNOHANG)))
6293 #endif /* USG, but not HPUX with WNOHANG */
6296 #endif /* SIGCHLD */
6300 exec_sentinel_unwind (Lisp_Object data
)
6302 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6307 exec_sentinel_error_handler (Lisp_Object error_val
)
6309 cmd_error_internal (error_val
, "error in process sentinel: ");
6311 update_echo_area ();
6312 Fsleep_for (make_number (2), Qnil
);
6317 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6319 Lisp_Object sentinel
, odeactivate
;
6320 register struct Lisp_Process
*p
= XPROCESS (proc
);
6321 int count
= SPECPDL_INDEX ();
6322 int outer_running_asynch_code
= running_asynch_code
;
6323 int waiting
= waiting_for_user_input_p
;
6325 if (inhibit_sentinels
)
6328 /* No need to gcpro these, because all we do with them later
6329 is test them for EQness, and none of them should be a string. */
6330 odeactivate
= Vdeactivate_mark
;
6332 Lisp_Object obuffer
, okeymap
;
6333 XSETBUFFER (obuffer
, current_buffer
);
6334 okeymap
= BVAR (current_buffer
, keymap
);
6337 /* There's no good reason to let sentinels change the current
6338 buffer, and many callers of accept-process-output, sit-for, and
6339 friends don't expect current-buffer to be changed from under them. */
6340 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6342 sentinel
= p
->sentinel
;
6343 if (NILP (sentinel
))
6346 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6347 assure that it gets restored no matter how the sentinel exits. */
6349 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6350 /* Inhibit quit so that random quits don't screw up a running filter. */
6351 specbind (Qinhibit_quit
, Qt
);
6352 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6354 /* In case we get recursively called,
6355 and we already saved the match data nonrecursively,
6356 save the same match data in safely recursive fashion. */
6357 if (outer_running_asynch_code
)
6360 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6361 restore_search_regs ();
6362 record_unwind_save_match_data ();
6363 Fset_match_data (tem
, Qt
);
6366 /* For speed, if a search happens within this code,
6367 save the match data in a special nonrecursive fashion. */
6368 running_asynch_code
= 1;
6370 internal_condition_case_1 (read_process_output_call
,
6372 Fcons (proc
, Fcons (reason
, Qnil
))),
6373 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6374 exec_sentinel_error_handler
);
6376 /* If we saved the match data nonrecursively, restore it now. */
6377 restore_search_regs ();
6378 running_asynch_code
= outer_running_asynch_code
;
6380 Vdeactivate_mark
= odeactivate
;
6382 /* Restore waiting_for_user_input_p as it was
6383 when we were called, in case the filter clobbered it. */
6384 waiting_for_user_input_p
= waiting
;
6387 if (! EQ (Fcurrent_buffer (), obuffer
)
6388 || ! EQ (current_buffer
->keymap
, okeymap
))
6390 /* But do it only if the caller is actually going to read events.
6391 Otherwise there's no need to make him wake up, and it could
6392 cause trouble (for example it would make sit_for return). */
6393 if (waiting_for_user_input_p
== -1)
6394 record_asynch_buffer_change ();
6396 unbind_to (count
, Qnil
);
6399 /* Report all recent events of a change in process status
6400 (either run the sentinel or output a message).
6401 This is usually done while Emacs is waiting for keyboard input
6402 but can be done at other times. */
6405 status_notify (struct Lisp_Process
*deleting_process
)
6407 register Lisp_Object proc
, buffer
;
6408 Lisp_Object tail
, msg
;
6409 struct gcpro gcpro1
, gcpro2
;
6413 /* We need to gcpro tail; if read_process_output calls a filter
6414 which deletes a process and removes the cons to which tail points
6415 from Vprocess_alist, and then causes a GC, tail is an unprotected
6419 /* Set this now, so that if new processes are created by sentinels
6420 that we run, we get called again to handle their status changes. */
6421 update_tick
= process_tick
;
6423 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6426 register struct Lisp_Process
*p
;
6428 proc
= Fcdr (XCAR (tail
));
6429 p
= XPROCESS (proc
);
6431 if (p
->tick
!= p
->update_tick
)
6433 p
->update_tick
= p
->tick
;
6435 /* If process is still active, read any output that remains. */
6436 while (! EQ (p
->filter
, Qt
)
6437 && ! EQ (p
->status
, Qconnect
)
6438 && ! EQ (p
->status
, Qlisten
)
6439 /* Network or serial process not stopped: */
6440 && ! EQ (p
->command
, Qt
)
6442 && p
!= deleting_process
6443 && read_process_output (proc
, p
->infd
) > 0);
6447 /* Get the text to use for the message. */
6448 if (p
->raw_status_new
)
6450 msg
= status_message (p
);
6452 /* If process is terminated, deactivate it or delete it. */
6454 if (CONSP (p
->status
))
6455 symbol
= XCAR (p
->status
);
6457 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6458 || EQ (symbol
, Qclosed
))
6460 if (delete_exited_processes
)
6461 remove_process (proc
);
6463 deactivate_process (proc
);
6466 /* The actions above may have further incremented p->tick.
6467 So set p->update_tick again
6468 so that an error in the sentinel will not cause
6469 this code to be run again. */
6470 p
->update_tick
= p
->tick
;
6471 /* Now output the message suitably. */
6472 if (!NILP (p
->sentinel
))
6473 exec_sentinel (proc
, msg
);
6474 /* Don't bother with a message in the buffer
6475 when a process becomes runnable. */
6476 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6479 struct buffer
*old
= current_buffer
;
6480 EMACS_INT opoint
, opoint_byte
;
6481 EMACS_INT before
, before_byte
;
6483 /* Avoid error if buffer is deleted
6484 (probably that's why the process is dead, too) */
6485 if (NILP (BVAR (XBUFFER (buffer
), name
)))
6487 Fset_buffer (buffer
);
6490 opoint_byte
= PT_BYTE
;
6491 /* Insert new output into buffer
6492 at the current end-of-output marker,
6493 thus preserving logical ordering of input and output. */
6494 if (XMARKER (p
->mark
)->buffer
)
6495 Fgoto_char (p
->mark
);
6497 SET_PT_BOTH (ZV
, ZV_BYTE
);
6500 before_byte
= PT_BYTE
;
6502 tem
= BVAR (current_buffer
, read_only
);
6503 BVAR (current_buffer
, read_only
) = Qnil
;
6504 insert_string ("\nProcess ");
6505 Finsert (1, &p
->name
);
6506 insert_string (" ");
6508 BVAR (current_buffer
, read_only
) = tem
;
6509 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6511 if (opoint
>= before
)
6512 SET_PT_BOTH (opoint
+ (PT
- before
),
6513 opoint_byte
+ (PT_BYTE
- before_byte
));
6515 SET_PT_BOTH (opoint
, opoint_byte
);
6517 set_buffer_internal (old
);
6522 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6527 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6528 Sset_process_coding_system
, 1, 3, 0,
6529 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6530 DECODING will be used to decode subprocess output and ENCODING to
6531 encode subprocess input. */)
6532 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6534 register struct Lisp_Process
*p
;
6536 CHECK_PROCESS (process
);
6537 p
= XPROCESS (process
);
6539 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6541 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6542 Fcheck_coding_system (decoding
);
6543 Fcheck_coding_system (encoding
);
6544 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6545 p
->decode_coding_system
= decoding
;
6546 p
->encode_coding_system
= encoding
;
6547 setup_process_coding_systems (process
);
6552 DEFUN ("process-coding-system",
6553 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6554 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6555 (register Lisp_Object process
)
6557 CHECK_PROCESS (process
);
6558 return Fcons (XPROCESS (process
)->decode_coding_system
,
6559 XPROCESS (process
)->encode_coding_system
);
6562 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6563 Sset_process_filter_multibyte
, 2, 2, 0,
6564 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6565 If FLAG is non-nil, the filter is given multibyte strings.
6566 If FLAG is nil, the filter is given unibyte strings. In this case,
6567 all character code conversion except for end-of-line conversion is
6569 (Lisp_Object process
, Lisp_Object flag
)
6571 register struct Lisp_Process
*p
;
6573 CHECK_PROCESS (process
);
6574 p
= XPROCESS (process
);
6576 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6577 setup_process_coding_systems (process
);
6582 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6583 Sprocess_filter_multibyte_p
, 1, 1, 0,
6584 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6585 (Lisp_Object process
)
6587 register struct Lisp_Process
*p
;
6588 struct coding_system
*coding
;
6590 CHECK_PROCESS (process
);
6591 p
= XPROCESS (process
);
6592 coding
= proc_decode_coding_system
[p
->infd
];
6593 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6600 add_gpm_wait_descriptor (int desc
)
6602 add_keyboard_wait_descriptor (desc
);
6606 delete_gpm_wait_descriptor (int desc
)
6608 delete_keyboard_wait_descriptor (desc
);
6613 /* Return nonzero if *MASK has a bit set
6614 that corresponds to one of the keyboard input descriptors. */
6617 keyboard_bit_set (fd_set
*mask
)
6621 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6622 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6623 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6630 #else /* not subprocesses */
6632 /* Defined on msdos.c. */
6633 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6636 /* Implementation of wait_reading_process_output, assuming that there
6637 are no subprocesses. Used only by the MS-DOS build.
6639 Wait for timeout to elapse and/or keyboard input to be available.
6642 timeout in seconds, or
6643 zero for no limit, or
6644 -1 means gobble data immediately available but don't wait for any.
6646 read_kbd is a Lisp_Object:
6647 0 to ignore keyboard input, or
6648 1 to return when input is available, or
6649 -1 means caller will actually read the input, so don't throw to
6652 see full version for other parameters. We know that wait_proc will
6653 always be NULL, since `subprocesses' isn't defined.
6655 do_display != 0 means redisplay should be done to show subprocess
6656 output that arrives.
6658 Return true if we received input from any process. */
6661 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6663 Lisp_Object wait_for_cell
,
6664 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6667 EMACS_TIME end_time
, timeout
;
6668 SELECT_TYPE waitchannels
;
6671 /* What does time_limit really mean? */
6672 if (time_limit
|| microsecs
)
6674 EMACS_GET_TIME (end_time
);
6675 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6676 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6679 /* Turn off periodic alarms (in case they are in use)
6680 and then turn off any other atimers,
6681 because the select emulator uses alarms. */
6683 turn_on_atimers (0);
6687 int timeout_reduced_for_timers
= 0;
6689 /* If calling from keyboard input, do not quit
6690 since we want to return C-g as an input character.
6691 Otherwise, do pending quit if requested. */
6695 /* Exit now if the cell we're waiting for became non-nil. */
6696 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6699 /* Compute time from now till when time limit is up */
6700 /* Exit if already run out */
6701 if (time_limit
== -1)
6703 /* -1 specified for timeout means
6704 gobble output available now
6705 but don't wait at all. */
6707 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6709 else if (time_limit
|| microsecs
)
6711 EMACS_GET_TIME (timeout
);
6712 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6713 if (EMACS_TIME_NEG_P (timeout
))
6718 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6721 /* If our caller will not immediately handle keyboard events,
6722 run timer events directly.
6723 (Callers that will immediately read keyboard events
6724 call timer_delay on their own.) */
6725 if (NILP (wait_for_cell
))
6727 EMACS_TIME timer_delay
;
6731 int old_timers_run
= timers_run
;
6732 timer_delay
= timer_check ();
6733 if (timers_run
!= old_timers_run
&& do_display
)
6734 /* We must retry, since a timer may have requeued itself
6735 and that could alter the time delay. */
6736 redisplay_preserve_echo_area (14);
6740 while (!detect_input_pending ());
6742 /* If there is unread keyboard input, also return. */
6744 && requeued_events_pending_p ())
6747 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6749 EMACS_TIME difference
;
6750 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6751 if (EMACS_TIME_NEG_P (difference
))
6753 timeout
= timer_delay
;
6754 timeout_reduced_for_timers
= 1;
6759 /* Cause C-g and alarm signals to take immediate action,
6760 and cause input available signals to zero out timeout. */
6762 set_waiting_for_input (&timeout
);
6764 /* Wait till there is something to do. */
6766 if (! read_kbd
&& NILP (wait_for_cell
))
6767 FD_ZERO (&waitchannels
);
6769 FD_SET (0, &waitchannels
);
6771 /* If a frame has been newly mapped and needs updating,
6772 reprocess its display stuff. */
6773 if (frame_garbaged
&& do_display
)
6775 clear_waiting_for_input ();
6776 redisplay_preserve_echo_area (15);
6778 set_waiting_for_input (&timeout
);
6781 if (read_kbd
&& detect_input_pending ())
6784 FD_ZERO (&waitchannels
);
6787 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6792 /* Make C-g and alarm signals set flags again */
6793 clear_waiting_for_input ();
6795 /* If we woke up due to SIGWINCH, actually change size now. */
6796 do_pending_window_change (0);
6798 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6799 /* We waited the full specified time, so return now. */
6804 /* If the system call was interrupted, then go around the
6806 if (xerrno
== EINTR
)
6807 FD_ZERO (&waitchannels
);
6809 error ("select error: %s", emacs_strerror (xerrno
));
6812 /* Check for keyboard input */
6815 && detect_input_pending_run_timers (do_display
))
6817 swallow_events (do_display
);
6818 if (detect_input_pending_run_timers (do_display
))
6822 /* If there is unread keyboard input, also return. */
6824 && requeued_events_pending_p ())
6827 /* If wait_for_cell. check for keyboard input
6828 but don't run any timers.
6829 ??? (It seems wrong to me to check for keyboard
6830 input at all when wait_for_cell, but the code
6831 has been this way since July 1994.
6832 Try changing this after version 19.31.) */
6833 if (! NILP (wait_for_cell
)
6834 && detect_input_pending ())
6836 swallow_events (do_display
);
6837 if (detect_input_pending ())
6841 /* Exit now if the cell we're waiting for became non-nil. */
6842 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6851 #endif /* not subprocesses */
6853 /* The following functions are needed even if async subprocesses are
6854 not supported. Some of them are no-op stubs in that case. */
6856 /* Add DESC to the set of keyboard input descriptors. */
6859 add_keyboard_wait_descriptor (int desc
)
6861 #ifdef subprocesses /* actually means "not MSDOS" */
6862 FD_SET (desc
, &input_wait_mask
);
6863 FD_SET (desc
, &non_process_wait_mask
);
6864 if (desc
> max_input_desc
)
6865 max_input_desc
= desc
;
6869 /* From now on, do not expect DESC to give keyboard input. */
6872 delete_keyboard_wait_descriptor (int desc
)
6876 int lim
= max_input_desc
;
6878 FD_CLR (desc
, &input_wait_mask
);
6879 FD_CLR (desc
, &non_process_wait_mask
);
6881 if (desc
== max_input_desc
)
6882 for (fd
= 0; fd
< lim
; fd
++)
6883 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
6884 max_input_desc
= fd
;
6888 /* Setup coding systems of PROCESS. */
6891 setup_process_coding_systems (Lisp_Object process
)
6894 struct Lisp_Process
*p
= XPROCESS (process
);
6896 int outch
= p
->outfd
;
6897 Lisp_Object coding_system
;
6899 if (inch
< 0 || outch
< 0)
6902 if (!proc_decode_coding_system
[inch
])
6903 proc_decode_coding_system
[inch
]
6904 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6905 coding_system
= p
->decode_coding_system
;
6906 if (! NILP (p
->filter
))
6908 else if (BUFFERP (p
->buffer
))
6910 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6911 coding_system
= raw_text_coding_system (coding_system
);
6913 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6915 if (!proc_encode_coding_system
[outch
])
6916 proc_encode_coding_system
[outch
]
6917 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6918 setup_coding_system (p
->encode_coding_system
,
6919 proc_encode_coding_system
[outch
]);
6923 /* Close all descriptors currently in use for communication
6924 with subprocess. This is used in a newly-forked subprocess
6925 to get rid of irrelevant descriptors. */
6928 close_process_descs (void)
6932 for (i
= 0; i
< MAXDESC
; i
++)
6934 Lisp_Object process
;
6935 process
= chan_process
[i
];
6936 if (!NILP (process
))
6938 int in
= XPROCESS (process
)->infd
;
6939 int out
= XPROCESS (process
)->outfd
;
6942 if (out
>= 0 && in
!= out
)
6949 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6950 doc
: /* Return the (or a) process associated with BUFFER.
6951 BUFFER may be a buffer or the name of one. */)
6952 (register Lisp_Object buffer
)
6955 register Lisp_Object buf
, tail
, proc
;
6957 if (NILP (buffer
)) return Qnil
;
6958 buf
= Fget_buffer (buffer
);
6959 if (NILP (buf
)) return Qnil
;
6961 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6963 proc
= Fcdr (XCAR (tail
));
6964 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
6967 #endif /* subprocesses */
6971 DEFUN ("process-inherit-coding-system-flag",
6972 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6974 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6975 If this flag is t, `buffer-file-coding-system' of the buffer
6976 associated with PROCESS will inherit the coding system used to decode
6977 the process output. */)
6978 (register Lisp_Object process
)
6981 CHECK_PROCESS (process
);
6982 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6984 /* Ignore the argument and return the value of
6985 inherit-process-coding-system. */
6986 return inherit_process_coding_system
? Qt
: Qnil
;
6990 /* Kill all processes associated with `buffer'.
6991 If `buffer' is nil, kill all processes */
6994 kill_buffer_processes (Lisp_Object buffer
)
6997 Lisp_Object tail
, proc
;
6999 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7001 proc
= XCDR (XCAR (tail
));
7003 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7005 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7006 Fdelete_process (proc
);
7007 else if (XPROCESS (proc
)->infd
>= 0)
7008 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7011 #else /* subprocesses */
7012 /* Since we have no subprocesses, this does nothing. */
7013 #endif /* subprocesses */
7016 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7017 Swaiting_for_user_input_p
, 0, 0, 0,
7018 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7019 This is intended for use by asynchronous process output filters and sentinels. */)
7023 return (waiting_for_user_input_p
? Qt
: Qnil
);
7029 /* Stop reading input from keyboard sources. */
7032 hold_keyboard_input (void)
7037 /* Resume reading input from keyboard sources. */
7040 unhold_keyboard_input (void)
7045 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7048 kbd_on_hold_p (void)
7050 return kbd_is_on_hold
;
7054 /* Enumeration of and access to system processes a-la ps(1). */
7056 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7058 doc
: /* Return a list of numerical process IDs of all running processes.
7059 If this functionality is unsupported, return nil.
7061 See `process-attributes' for getting attributes of a process given its ID. */)
7064 return list_system_processes ();
7067 DEFUN ("process-attributes", Fprocess_attributes
,
7068 Sprocess_attributes
, 1, 1, 0,
7069 doc
: /* Return attributes of the process given by its PID, a number.
7071 Value is an alist where each element is a cons cell of the form
7075 If this functionality is unsupported, the value is nil.
7077 See `list-system-processes' for getting a list of all process IDs.
7079 The KEYs of the attributes that this function may return are listed
7080 below, together with the type of the associated VALUE (in parentheses).
7081 Not all platforms support all of these attributes; unsupported
7082 attributes will not appear in the returned alist.
7083 Unless explicitly indicated otherwise, numbers can have either
7084 integer or floating point values.
7086 euid -- Effective user User ID of the process (number)
7087 user -- User name corresponding to euid (string)
7088 egid -- Effective user Group ID of the process (number)
7089 group -- Group name corresponding to egid (string)
7090 comm -- Command name (executable name only) (string)
7091 state -- Process state code, such as "S", "R", or "T" (string)
7092 ppid -- Parent process ID (number)
7093 pgrp -- Process group ID (number)
7094 sess -- Session ID, i.e. process ID of session leader (number)
7095 ttname -- Controlling tty name (string)
7096 tpgid -- ID of foreground process group on the process's tty (number)
7097 minflt -- number of minor page faults (number)
7098 majflt -- number of major page faults (number)
7099 cminflt -- cumulative number of minor page faults (number)
7100 cmajflt -- cumulative number of major page faults (number)
7101 utime -- user time used by the process, in the (HIGH LOW USEC) format
7102 stime -- system time used by the process, in the (HIGH LOW USEC) format
7103 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7104 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7105 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7106 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7107 pri -- priority of the process (number)
7108 nice -- nice value of the process (number)
7109 thcount -- process thread count (number)
7110 start -- time the process started, in the (HIGH LOW USEC) format
7111 vsize -- virtual memory size of the process in KB's (number)
7112 rss -- resident set size of the process in KB's (number)
7113 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7114 pcpu -- percents of CPU time used by the process (floating-point number)
7115 pmem -- percents of total physical memory used by process's resident set
7116 (floating-point number)
7117 args -- command line which invoked the process (string). */)
7120 return system_process_attributes (pid
);
7130 inhibit_sentinels
= 0;
7134 if (! noninteractive
|| initialized
)
7136 signal (SIGCHLD
, sigchld_handler
);
7139 FD_ZERO (&input_wait_mask
);
7140 FD_ZERO (&non_keyboard_wait_mask
);
7141 FD_ZERO (&non_process_wait_mask
);
7142 FD_ZERO (&write_mask
);
7143 max_process_desc
= 0;
7144 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7146 #ifdef NON_BLOCKING_CONNECT
7147 FD_ZERO (&connect_wait_mask
);
7148 num_pending_connects
= 0;
7151 #ifdef ADAPTIVE_READ_BUFFERING
7152 process_output_delay_count
= 0;
7153 process_output_skip
= 0;
7156 /* Don't do this, it caused infinite select loops. The display
7157 method should call add_keyboard_wait_descriptor on stdin if it
7160 FD_SET (0, &input_wait_mask
);
7163 Vprocess_alist
= Qnil
;
7165 deleted_pid_list
= Qnil
;
7167 for (i
= 0; i
< MAXDESC
; i
++)
7169 chan_process
[i
] = Qnil
;
7170 proc_buffered_char
[i
] = -1;
7172 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7173 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7174 #ifdef DATAGRAM_SOCKETS
7175 memset (datagram_address
, 0, sizeof datagram_address
);
7179 Lisp_Object subfeatures
= Qnil
;
7180 const struct socket_options
*sopt
;
7182 #define ADD_SUBFEATURE(key, val) \
7183 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7185 #ifdef NON_BLOCKING_CONNECT
7186 ADD_SUBFEATURE (QCnowait
, Qt
);
7188 #ifdef DATAGRAM_SOCKETS
7189 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7191 #ifdef HAVE_SEQPACKET
7192 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7194 #ifdef HAVE_LOCAL_SOCKETS
7195 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7197 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7199 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7201 #ifdef HAVE_GETSOCKNAME
7202 ADD_SUBFEATURE (QCservice
, Qt
);
7204 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7205 ADD_SUBFEATURE (QCserver
, Qt
);
7208 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7209 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7211 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7214 #if defined (DARWIN_OS)
7215 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7216 processes. As such, we only change the default value. */
7219 char const *release
= (STRINGP (Voperating_system_release
)
7220 ? SSDATA (Voperating_system_release
)
7222 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7223 && release
[1] == '.')) {
7224 Vprocess_connection_type
= Qnil
;
7228 #endif /* subprocesses */
7233 syms_of_process (void)
7237 Qprocessp
= intern_c_string ("processp");
7238 staticpro (&Qprocessp
);
7239 Qrun
= intern_c_string ("run");
7241 Qstop
= intern_c_string ("stop");
7243 Qsignal
= intern_c_string ("signal");
7244 staticpro (&Qsignal
);
7246 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7249 Qexit = intern_c_string ("exit");
7250 staticpro (&Qexit); */
7252 Qopen
= intern_c_string ("open");
7254 Qclosed
= intern_c_string ("closed");
7255 staticpro (&Qclosed
);
7256 Qconnect
= intern_c_string ("connect");
7257 staticpro (&Qconnect
);
7258 Qfailed
= intern_c_string ("failed");
7259 staticpro (&Qfailed
);
7260 Qlisten
= intern_c_string ("listen");
7261 staticpro (&Qlisten
);
7262 Qlocal
= intern_c_string ("local");
7263 staticpro (&Qlocal
);
7264 Qipv4
= intern_c_string ("ipv4");
7267 Qipv6
= intern_c_string ("ipv6");
7270 Qdatagram
= intern_c_string ("datagram");
7271 staticpro (&Qdatagram
);
7272 Qseqpacket
= intern_c_string ("seqpacket");
7273 staticpro (&Qseqpacket
);
7275 QCport
= intern_c_string (":port");
7276 staticpro (&QCport
);
7277 QCspeed
= intern_c_string (":speed");
7278 staticpro (&QCspeed
);
7279 QCprocess
= intern_c_string (":process");
7280 staticpro (&QCprocess
);
7282 QCbytesize
= intern_c_string (":bytesize");
7283 staticpro (&QCbytesize
);
7284 QCstopbits
= intern_c_string (":stopbits");
7285 staticpro (&QCstopbits
);
7286 QCparity
= intern_c_string (":parity");
7287 staticpro (&QCparity
);
7288 Qodd
= intern_c_string ("odd");
7290 Qeven
= intern_c_string ("even");
7292 QCflowcontrol
= intern_c_string (":flowcontrol");
7293 staticpro (&QCflowcontrol
);
7294 Qhw
= intern_c_string ("hw");
7296 Qsw
= intern_c_string ("sw");
7298 QCsummary
= intern_c_string (":summary");
7299 staticpro (&QCsummary
);
7301 Qreal
= intern_c_string ("real");
7303 Qnetwork
= intern_c_string ("network");
7304 staticpro (&Qnetwork
);
7305 Qserial
= intern_c_string ("serial");
7306 staticpro (&Qserial
);
7307 QCbuffer
= intern_c_string (":buffer");
7308 staticpro (&QCbuffer
);
7309 QChost
= intern_c_string (":host");
7310 staticpro (&QChost
);
7311 QCservice
= intern_c_string (":service");
7312 staticpro (&QCservice
);
7313 QClocal
= intern_c_string (":local");
7314 staticpro (&QClocal
);
7315 QCremote
= intern_c_string (":remote");
7316 staticpro (&QCremote
);
7317 QCcoding
= intern_c_string (":coding");
7318 staticpro (&QCcoding
);
7319 QCserver
= intern_c_string (":server");
7320 staticpro (&QCserver
);
7321 QCnowait
= intern_c_string (":nowait");
7322 staticpro (&QCnowait
);
7323 QCsentinel
= intern_c_string (":sentinel");
7324 staticpro (&QCsentinel
);
7325 QClog
= intern_c_string (":log");
7327 QCnoquery
= intern_c_string (":noquery");
7328 staticpro (&QCnoquery
);
7329 QCstop
= intern_c_string (":stop");
7330 staticpro (&QCstop
);
7331 QCoptions
= intern_c_string (":options");
7332 staticpro (&QCoptions
);
7333 QCplist
= intern_c_string (":plist");
7334 staticpro (&QCplist
);
7336 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7337 staticpro (&Qlast_nonmenu_event
);
7339 staticpro (&Vprocess_alist
);
7341 staticpro (&deleted_pid_list
);
7344 #endif /* subprocesses */
7346 QCname
= intern_c_string (":name");
7347 staticpro (&QCname
);
7348 QCtype
= intern_c_string (":type");
7349 staticpro (&QCtype
);
7351 Qeuid
= intern_c_string ("euid");
7353 Qegid
= intern_c_string ("egid");
7355 Quser
= intern_c_string ("user");
7357 Qgroup
= intern_c_string ("group");
7358 staticpro (&Qgroup
);
7359 Qcomm
= intern_c_string ("comm");
7361 Qstate
= intern_c_string ("state");
7362 staticpro (&Qstate
);
7363 Qppid
= intern_c_string ("ppid");
7365 Qpgrp
= intern_c_string ("pgrp");
7367 Qsess
= intern_c_string ("sess");
7369 Qttname
= intern_c_string ("ttname");
7370 staticpro (&Qttname
);
7371 Qtpgid
= intern_c_string ("tpgid");
7372 staticpro (&Qtpgid
);
7373 Qminflt
= intern_c_string ("minflt");
7374 staticpro (&Qminflt
);
7375 Qmajflt
= intern_c_string ("majflt");
7376 staticpro (&Qmajflt
);
7377 Qcminflt
= intern_c_string ("cminflt");
7378 staticpro (&Qcminflt
);
7379 Qcmajflt
= intern_c_string ("cmajflt");
7380 staticpro (&Qcmajflt
);
7381 Qutime
= intern_c_string ("utime");
7382 staticpro (&Qutime
);
7383 Qstime
= intern_c_string ("stime");
7384 staticpro (&Qstime
);
7385 Qtime
= intern_c_string ("time");
7387 Qcutime
= intern_c_string ("cutime");
7388 staticpro (&Qcutime
);
7389 Qcstime
= intern_c_string ("cstime");
7390 staticpro (&Qcstime
);
7391 Qctime
= intern_c_string ("ctime");
7392 staticpro (&Qctime
);
7393 Qpri
= intern_c_string ("pri");
7395 Qnice
= intern_c_string ("nice");
7397 Qthcount
= intern_c_string ("thcount");
7398 staticpro (&Qthcount
);
7399 Qstart
= intern_c_string ("start");
7400 staticpro (&Qstart
);
7401 Qvsize
= intern_c_string ("vsize");
7402 staticpro (&Qvsize
);
7403 Qrss
= intern_c_string ("rss");
7405 Qetime
= intern_c_string ("etime");
7406 staticpro (&Qetime
);
7407 Qpcpu
= intern_c_string ("pcpu");
7409 Qpmem
= intern_c_string ("pmem");
7411 Qargs
= intern_c_string ("args");
7414 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7415 doc
: /* *Non-nil means delete processes immediately when they exit.
7416 A value of nil means don't delete them until `list-processes' is run. */);
7418 delete_exited_processes
= 1;
7421 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7422 doc
: /* Control type of device used to communicate with subprocesses.
7423 Values are nil to use a pipe, or t or `pty' to use a pty.
7424 The value has no effect if the system has no ptys or if all ptys are busy:
7425 then a pipe is used in any case.
7426 The value takes effect when `start-process' is called. */);
7427 Vprocess_connection_type
= Qt
;
7429 #ifdef ADAPTIVE_READ_BUFFERING
7430 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7431 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7432 On some systems, when Emacs reads the output from a subprocess, the output data
7433 is read in very small blocks, potentially resulting in very poor performance.
7434 This behavior can be remedied to some extent by setting this variable to a
7435 non-nil value, as it will automatically delay reading from such processes, to
7436 allow them to produce more output before Emacs tries to read it.
7437 If the value is t, the delay is reset after each write to the process; any other
7438 non-nil value means that the delay is not reset on write.
7439 The variable takes effect when `start-process' is called. */);
7440 Vprocess_adaptive_read_buffering
= Qt
;
7443 defsubr (&Sprocessp
);
7444 defsubr (&Sget_process
);
7445 defsubr (&Sdelete_process
);
7446 defsubr (&Sprocess_status
);
7447 defsubr (&Sprocess_exit_status
);
7448 defsubr (&Sprocess_id
);
7449 defsubr (&Sprocess_name
);
7450 defsubr (&Sprocess_tty_name
);
7451 defsubr (&Sprocess_command
);
7452 defsubr (&Sset_process_buffer
);
7453 defsubr (&Sprocess_buffer
);
7454 defsubr (&Sprocess_mark
);
7455 defsubr (&Sset_process_filter
);
7456 defsubr (&Sprocess_filter
);
7457 defsubr (&Sset_process_sentinel
);
7458 defsubr (&Sprocess_sentinel
);
7459 defsubr (&Sset_process_window_size
);
7460 defsubr (&Sset_process_inherit_coding_system_flag
);
7461 defsubr (&Sset_process_query_on_exit_flag
);
7462 defsubr (&Sprocess_query_on_exit_flag
);
7463 defsubr (&Sprocess_contact
);
7464 defsubr (&Sprocess_plist
);
7465 defsubr (&Sset_process_plist
);
7466 defsubr (&Sprocess_list
);
7467 defsubr (&Sstart_process
);
7468 defsubr (&Sserial_process_configure
);
7469 defsubr (&Smake_serial_process
);
7470 defsubr (&Sset_network_process_option
);
7471 defsubr (&Smake_network_process
);
7472 defsubr (&Sformat_network_address
);
7473 #if defined(HAVE_NET_IF_H)
7475 defsubr (&Snetwork_interface_list
);
7477 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7478 defsubr (&Snetwork_interface_info
);
7480 #endif /* defined(HAVE_NET_IF_H) */
7481 #ifdef DATAGRAM_SOCKETS
7482 defsubr (&Sprocess_datagram_address
);
7483 defsubr (&Sset_process_datagram_address
);
7485 defsubr (&Saccept_process_output
);
7486 defsubr (&Sprocess_send_region
);
7487 defsubr (&Sprocess_send_string
);
7488 defsubr (&Sinterrupt_process
);
7489 defsubr (&Skill_process
);
7490 defsubr (&Squit_process
);
7491 defsubr (&Sstop_process
);
7492 defsubr (&Scontinue_process
);
7493 defsubr (&Sprocess_running_child_p
);
7494 defsubr (&Sprocess_send_eof
);
7495 defsubr (&Ssignal_process
);
7496 defsubr (&Swaiting_for_user_input_p
);
7497 defsubr (&Sprocess_type
);
7498 defsubr (&Sset_process_coding_system
);
7499 defsubr (&Sprocess_coding_system
);
7500 defsubr (&Sset_process_filter_multibyte
);
7501 defsubr (&Sprocess_filter_multibyte_p
);
7503 #endif /* subprocesses */
7505 defsubr (&Sget_buffer_process
);
7506 defsubr (&Sprocess_inherit_coding_system_flag
);
7507 defsubr (&Slist_system_processes
);
7508 defsubr (&Sprocess_attributes
);