1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
25 #include <sys/types.h> /* some typedefs are used in sys/file.h */
29 #ifdef HAVE_INTTYPES_H
36 /* Only MS-DOS does not define `subprocesses'. */
39 #include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <arpa/inet.h>
44 /* Are local (unix) sockets supported? */
45 #if defined (HAVE_SYS_UN_H)
46 #if !defined (AF_LOCAL) && defined (AF_UNIX)
47 #define AF_LOCAL AF_UNIX
50 #define HAVE_LOCAL_SOCKETS
55 #include <sys/ioctl.h>
56 #if defined(HAVE_NET_IF_H)
58 #endif /* HAVE_NET_IF_H */
65 #include <netinet/in.h>
66 #include <arpa/nameser.h>
78 #endif /* subprocesses */
86 #include "character.h"
90 #include "termhooks.h"
94 #include "blockinput.h"
95 #include "dispextern.h"
96 #include "composite.h"
98 #include "sysselect.h"
99 #include "syssignal.h"
105 #if defined (USE_GTK) || defined (HAVE_GCONF)
106 #include "xgselect.h"
107 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
112 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
113 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
114 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
115 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
116 Lisp_Object QCname
, QCtype
;
118 /* Non-zero if keyboard input is on hold, zero otherwise. */
120 static int kbd_is_on_hold
;
122 /* Nonzero means don't run process sentinels. This is used
124 int inhibit_sentinels
;
128 Lisp_Object Qprocessp
;
129 Lisp_Object Qrun
, Qstop
, Qsignal
;
130 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
131 Lisp_Object Qlocal
, Qipv4
, Qdatagram
, Qseqpacket
;
132 Lisp_Object Qreal
, Qnetwork
, Qserial
;
136 Lisp_Object QCport
, QCspeed
, QCprocess
;
137 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
138 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
139 Lisp_Object QCbuffer
, QChost
, QCservice
;
140 Lisp_Object QClocal
, QCremote
, QCcoding
;
141 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
142 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
143 Lisp_Object Qlast_nonmenu_event
;
144 /* QCfamily is declared and initialized in xfaces.c,
145 QCfilter in keyboard.c. */
146 extern Lisp_Object QCfamily
, QCfilter
;
148 /* Qexit is declared and initialized in eval.c. */
150 /* QCfamily is defined in xfaces.c. */
151 extern Lisp_Object QCfamily
;
152 /* QCfilter is defined in keyboard.c. */
153 extern Lisp_Object QCfilter
;
155 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
156 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
157 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
158 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
160 /* Define first descriptor number available for subprocesses. */
161 #define FIRST_PROC_DESC 3
163 extern const char *get_operating_system_release (void);
165 /* From sysdep.c or w32.c */
166 extern int serial_open (char *port
);
167 extern void serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
);
173 /* These next two vars are non-static since sysdep.c uses them in the
174 emulation of `select'. */
175 /* Number of events of change of status of a process. */
177 /* Number of events for which the user or sentinel has been notified. */
180 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
182 /* Only W32 has this, it really means that select can't take write mask. */
183 #ifdef BROKEN_NON_BLOCKING_CONNECT
184 #undef NON_BLOCKING_CONNECT
185 #define SELECT_CANT_DO_WRITE_MASK
187 #ifndef NON_BLOCKING_CONNECT
189 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
190 #if defined (O_NONBLOCK) || defined (O_NDELAY)
191 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
192 #define NON_BLOCKING_CONNECT
193 #endif /* EWOULDBLOCK || EINPROGRESS */
194 #endif /* O_NONBLOCK || O_NDELAY */
195 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
196 #endif /* HAVE_SELECT */
197 #endif /* NON_BLOCKING_CONNECT */
198 #endif /* BROKEN_NON_BLOCKING_CONNECT */
200 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
201 this system. We need to read full packets, so we need a
202 "non-destructive" select. So we require either native select,
203 or emulation of select using FIONREAD. */
205 #ifdef BROKEN_DATAGRAM_SOCKETS
206 #undef DATAGRAM_SOCKETS
208 #ifndef DATAGRAM_SOCKETS
209 #if defined (HAVE_SELECT) || defined (FIONREAD)
210 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
211 #define DATAGRAM_SOCKETS
212 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
213 #endif /* HAVE_SELECT || FIONREAD */
214 #endif /* DATAGRAM_SOCKETS */
215 #endif /* BROKEN_DATAGRAM_SOCKETS */
217 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
218 # define HAVE_SEQPACKET
221 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
222 #ifdef EMACS_HAS_USECS
223 #define ADAPTIVE_READ_BUFFERING
227 #ifdef ADAPTIVE_READ_BUFFERING
228 #define READ_OUTPUT_DELAY_INCREMENT 10000
229 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
230 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
232 /* Number of processes which have a non-zero read_output_delay,
233 and therefore might be delayed for adaptive read buffering. */
235 static int process_output_delay_count
;
237 /* Non-zero if any process has non-nil read_output_skip. */
239 static int process_output_skip
;
242 #define process_output_delay_count 0
245 static int keyboard_bit_set (SELECT_TYPE
*);
246 static void deactivate_process (Lisp_Object
);
247 static void status_notify (struct Lisp_Process
*);
248 static int read_process_output (Lisp_Object
, int);
249 static void create_pty (Lisp_Object
);
251 /* If we support a window system, turn on the code to poll periodically
252 to detect C-g. It isn't actually used when doing interrupt input. */
253 #ifdef HAVE_WINDOW_SYSTEM
254 #define POLL_FOR_INPUT
257 static Lisp_Object
get_process (register Lisp_Object name
);
258 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
260 /* Mask of bits indicating the descriptors that we wait for input on. */
262 static SELECT_TYPE input_wait_mask
;
264 /* Mask that excludes keyboard input descriptor(s). */
266 static SELECT_TYPE non_keyboard_wait_mask
;
268 /* Mask that excludes process input descriptor(s). */
270 static SELECT_TYPE non_process_wait_mask
;
272 /* Mask for selecting for write. */
274 static SELECT_TYPE write_mask
;
276 #ifdef NON_BLOCKING_CONNECT
277 /* Mask of bits indicating the descriptors that we wait for connect to
278 complete on. Once they complete, they are removed from this mask
279 and added to the input_wait_mask and non_keyboard_wait_mask. */
281 static SELECT_TYPE connect_wait_mask
;
283 /* Number of bits set in connect_wait_mask. */
284 static int num_pending_connects
;
286 #define IF_NON_BLOCKING_CONNECT(s) s
287 #else /* NON_BLOCKING_CONNECT */
288 #define IF_NON_BLOCKING_CONNECT(s)
289 #endif /* NON_BLOCKING_CONNECT */
291 /* The largest descriptor currently in use for a process object. */
292 static int max_process_desc
;
294 /* The largest descriptor currently in use for input. */
295 static int max_input_desc
;
297 /* Indexed by descriptor, gives the process (if any) for that descriptor */
298 Lisp_Object chan_process
[MAXDESC
];
300 /* Alist of elements (NAME . PROCESS) */
301 Lisp_Object Vprocess_alist
;
303 /* Buffered-ahead input char from process, indexed by channel.
304 -1 means empty (no char is buffered).
305 Used on sys V where the only way to tell if there is any
306 output from the process is to read at least one char.
307 Always -1 on systems that support FIONREAD. */
309 /* Don't make static; need to access externally. */
310 int proc_buffered_char
[MAXDESC
];
312 /* Table of `struct coding-system' for each process. */
313 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
314 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
316 #ifdef DATAGRAM_SOCKETS
317 /* Table of `partner address' for datagram sockets. */
318 struct sockaddr_and_len
{
321 } datagram_address
[MAXDESC
];
322 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
323 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
325 #define DATAGRAM_CHAN_P(chan) (0)
326 #define DATAGRAM_CONN_P(proc) (0)
329 /* Maximum number of bytes to send to a pty without an eof. */
330 static int pty_max_bytes
;
334 struct fd_callback_data
340 int condition
; /* mask of the defines above. */
341 } fd_callback_info
[MAXDESC
];
344 /* Add a file descriptor FD to be monitored for when read is possible.
345 When read is possible, call FUNC with argument DATA. */
348 add_read_fd (int fd
, fd_callback func
, void *data
)
350 xassert (fd
< MAXDESC
);
351 add_keyboard_wait_descriptor (fd
);
353 fd_callback_info
[fd
].func
= func
;
354 fd_callback_info
[fd
].data
= data
;
355 fd_callback_info
[fd
].condition
|= FOR_READ
;
358 /* Stop monitoring file descriptor FD for when read is possible. */
361 delete_read_fd (int fd
)
363 xassert (fd
< MAXDESC
);
364 delete_keyboard_wait_descriptor (fd
);
366 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
367 if (fd_callback_info
[fd
].condition
== 0)
369 fd_callback_info
[fd
].func
= 0;
370 fd_callback_info
[fd
].data
= 0;
374 /* Add a file descriptor FD to be monitored for when write is possible.
375 When write is possible, call FUNC with argument DATA. */
378 add_write_fd (int fd
, fd_callback func
, void *data
)
380 xassert (fd
< MAXDESC
);
381 FD_SET (fd
, &write_mask
);
382 if (fd
> max_input_desc
)
385 fd_callback_info
[fd
].func
= func
;
386 fd_callback_info
[fd
].data
= data
;
387 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
390 /* Stop monitoring file descriptor FD for when write is possible. */
393 delete_write_fd (int fd
)
395 int lim
= max_input_desc
;
397 xassert (fd
< MAXDESC
);
398 FD_CLR (fd
, &write_mask
);
399 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
400 if (fd_callback_info
[fd
].condition
== 0)
402 fd_callback_info
[fd
].func
= 0;
403 fd_callback_info
[fd
].data
= 0;
405 if (fd
== max_input_desc
)
406 for (fd
= lim
; fd
>= 0; fd
--)
407 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
417 /* Compute the Lisp form of the process status, p->status, from
418 the numeric status that was returned by `wait'. */
420 static Lisp_Object
status_convert (int);
423 update_status (struct Lisp_Process
*p
)
425 eassert (p
->raw_status_new
);
426 p
->status
= status_convert (p
->raw_status
);
427 p
->raw_status_new
= 0;
430 /* Convert a process status word in Unix format to
431 the list that we use internally. */
434 status_convert (int w
)
437 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
438 else if (WIFEXITED (w
))
439 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
440 WCOREDUMP (w
) ? Qt
: Qnil
));
441 else if (WIFSIGNALED (w
))
442 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
443 WCOREDUMP (w
) ? Qt
: Qnil
));
448 /* Given a status-list, extract the three pieces of information
449 and store them individually through the three pointers. */
452 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
466 *code
= XFASTINT (XCAR (tem
));
468 *coredump
= !NILP (tem
);
472 /* Return a string describing a process status list. */
475 status_message (struct Lisp_Process
*p
)
477 Lisp_Object status
= p
->status
;
480 Lisp_Object string
, string2
;
482 decode_status (status
, &symbol
, &code
, &coredump
);
484 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
487 synchronize_system_messages_locale ();
488 signame
= strsignal (code
);
490 string
= build_string ("unknown");
495 string
= make_unibyte_string (signame
, strlen (signame
));
496 if (! NILP (Vlocale_coding_system
))
497 string
= (code_convert_string_norecord
498 (string
, Vlocale_coding_system
, 0));
499 c1
= STRING_CHAR (SSDATA (string
));
502 Faset (string
, make_number (0), make_number (c2
));
504 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
505 return concat2 (string
, string2
);
507 else if (EQ (symbol
, Qexit
))
510 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
512 return build_string ("finished\n");
513 string
= Fnumber_to_string (make_number (code
));
514 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
515 return concat3 (build_string ("exited abnormally with code "),
518 else if (EQ (symbol
, Qfailed
))
520 string
= Fnumber_to_string (make_number (code
));
521 string2
= build_string ("\n");
522 return concat3 (build_string ("failed with code "),
526 return Fcopy_sequence (Fsymbol_name (symbol
));
531 /* The file name of the pty opened by allocate_pty. */
532 static char pty_name
[24];
534 /* Open an available pty, returning a file descriptor.
535 Return -1 on failure.
536 The file name of the terminal corresponding to the pty
537 is left in the variable pty_name. */
548 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
549 for (i
= 0; i
< 16; i
++)
552 struct stat stb
; /* Used in some PTY_OPEN. */
553 #ifdef PTY_NAME_SPRINTF
556 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
557 #endif /* no PTY_NAME_SPRINTF */
561 #else /* no PTY_OPEN */
563 { /* Some systems name their pseudoterminals so that there are gaps in
564 the usual sequence - for example, on HP9000/S700 systems, there
565 are no pseudoterminals with names ending in 'f'. So we wait for
566 three failures in a row before deciding that we've reached the
568 int failed_count
= 0;
570 if (stat (pty_name
, &stb
) < 0)
573 if (failed_count
>= 3)
580 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
582 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
585 #endif /* no PTY_OPEN */
589 /* check to make certain that both sides are available
590 this avoids a nasty yet stupid bug in rlogins */
591 #ifdef PTY_TTY_NAME_SPRINTF
594 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
595 #endif /* no PTY_TTY_NAME_SPRINTF */
596 if (access (pty_name
, 6) != 0)
611 #endif /* HAVE_PTYS */
614 make_process (Lisp_Object name
)
616 register Lisp_Object val
, tem
, name1
;
617 register struct Lisp_Process
*p
;
621 p
= allocate_process ();
629 p
->raw_status_new
= 0;
631 p
->mark
= Fmake_marker ();
632 p
->kill_without_query
= 0;
634 #ifdef ADAPTIVE_READ_BUFFERING
635 p
->adaptive_read_buffering
= 0;
636 p
->read_output_delay
= 0;
637 p
->read_output_skip
= 0;
641 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
642 p
->gnutls_log_level
= 0;
646 /* If name is already in use, modify it until it is unused. */
651 tem
= Fget_process (name1
);
652 if (NILP (tem
)) break;
653 sprintf (suffix
, "<%d>", i
);
654 name1
= concat2 (name
, build_string (suffix
));
658 XSETPROCESS (val
, p
);
659 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
664 remove_process (register Lisp_Object proc
)
666 register Lisp_Object pair
;
668 pair
= Frassq (proc
, Vprocess_alist
);
669 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
671 deactivate_process (proc
);
675 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
676 doc
: /* Return t if OBJECT is a process. */)
679 return PROCESSP (object
) ? Qt
: Qnil
;
682 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
683 doc
: /* Return the process named NAME, or nil if there is none. */)
684 (register Lisp_Object name
)
689 return Fcdr (Fassoc (name
, Vprocess_alist
));
692 /* This is how commands for the user decode process arguments. It
693 accepts a process, a process name, a buffer, a buffer name, or nil.
694 Buffers denote the first process in the buffer, and nil denotes the
698 get_process (register Lisp_Object name
)
700 register Lisp_Object proc
, obj
;
703 obj
= Fget_process (name
);
705 obj
= Fget_buffer (name
);
707 error ("Process %s does not exist", SDATA (name
));
709 else if (NILP (name
))
710 obj
= Fcurrent_buffer ();
714 /* Now obj should be either a buffer object or a process object.
718 proc
= Fget_buffer_process (obj
);
720 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
732 /* Fdelete_process promises to immediately forget about the process, but in
733 reality, Emacs needs to remember those processes until they have been
734 treated by sigchld_handler; otherwise this handler would consider the
735 process as being synchronous and say that the synchronous process is
737 static Lisp_Object deleted_pid_list
;
740 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
741 doc
: /* Delete PROCESS: kill it and forget about it immediately.
742 PROCESS may be a process, a buffer, the name of a process or buffer, or
743 nil, indicating the current buffer's process. */)
744 (register Lisp_Object process
)
746 register struct Lisp_Process
*p
;
748 process
= get_process (process
);
749 p
= XPROCESS (process
);
751 p
->raw_status_new
= 0;
752 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
754 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
755 p
->tick
= ++process_tick
;
757 redisplay_preserve_echo_area (13);
759 else if (p
->infd
>= 0)
763 /* Assignment to EMACS_INT stops GCC whining about limited range
765 EMACS_INT pid
= p
->pid
;
767 /* No problem storing the pid here, as it is still in Vprocess_alist. */
768 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
769 /* GC treated elements set to nil. */
770 Fdelq (Qnil
, deleted_pid_list
));
771 /* If the process has already signaled, remove it from the list. */
772 if (p
->raw_status_new
)
775 if (CONSP (p
->status
))
776 symbol
= XCAR (p
->status
);
777 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
779 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
783 Fkill_process (process
, Qnil
);
784 /* Do this now, since remove_process will make sigchld_handler do nothing. */
786 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
787 p
->tick
= ++process_tick
;
789 redisplay_preserve_echo_area (13);
792 remove_process (process
);
796 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
797 doc
: /* Return the status of PROCESS.
798 The returned value is one of the following symbols:
799 run -- for a process that is running.
800 stop -- for a process stopped but continuable.
801 exit -- for a process that has exited.
802 signal -- for a process that has got a fatal signal.
803 open -- for a network stream connection that is open.
804 listen -- for a network stream server that is listening.
805 closed -- for a network stream connection that is closed.
806 connect -- when waiting for a non-blocking connection to complete.
807 failed -- when a non-blocking connection has failed.
808 nil -- if arg is a process name and no such process exists.
809 PROCESS may be a process, a buffer, the name of a process, or
810 nil, indicating the current buffer's process. */)
811 (register Lisp_Object process
)
813 register struct Lisp_Process
*p
;
814 register Lisp_Object status
;
816 if (STRINGP (process
))
817 process
= Fget_process (process
);
819 process
= get_process (process
);
824 p
= XPROCESS (process
);
825 if (p
->raw_status_new
)
829 status
= XCAR (status
);
830 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
832 if (EQ (status
, Qexit
))
834 else if (EQ (p
->command
, Qt
))
836 else if (EQ (status
, Qrun
))
842 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
844 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
845 If PROCESS has not yet exited or died, return 0. */)
846 (register Lisp_Object process
)
848 CHECK_PROCESS (process
);
849 if (XPROCESS (process
)->raw_status_new
)
850 update_status (XPROCESS (process
));
851 if (CONSP (XPROCESS (process
)->status
))
852 return XCAR (XCDR (XPROCESS (process
)->status
));
853 return make_number (0);
856 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
857 doc
: /* Return the process id of PROCESS.
858 This is the pid of the external process which PROCESS uses or talks to.
859 For a network connection, this value is nil. */)
860 (register Lisp_Object process
)
862 /* Assignment to EMACS_INT stops GCC whining about limited range of
866 CHECK_PROCESS (process
);
867 pid
= XPROCESS (process
)->pid
;
868 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
871 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
872 doc
: /* Return the name of PROCESS, as a string.
873 This is the name of the program invoked in PROCESS,
874 possibly modified to make it unique among process names. */)
875 (register Lisp_Object process
)
877 CHECK_PROCESS (process
);
878 return XPROCESS (process
)->name
;
881 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
882 doc
: /* Return the command that was executed to start PROCESS.
883 This is a list of strings, the first string being the program executed
884 and the rest of the strings being the arguments given to it.
885 For a network or serial process, this is nil (process is running) or t
886 \(process is stopped). */)
887 (register Lisp_Object process
)
889 CHECK_PROCESS (process
);
890 return XPROCESS (process
)->command
;
893 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
894 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
895 This is the terminal that the process itself reads and writes on,
896 not the name of the pty that Emacs uses to talk with that terminal. */)
897 (register Lisp_Object process
)
899 CHECK_PROCESS (process
);
900 return XPROCESS (process
)->tty_name
;
903 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
905 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
906 (register Lisp_Object process
, Lisp_Object buffer
)
908 struct Lisp_Process
*p
;
910 CHECK_PROCESS (process
);
912 CHECK_BUFFER (buffer
);
913 p
= XPROCESS (process
);
915 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
916 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
917 setup_process_coding_systems (process
);
921 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
923 doc
: /* Return the buffer PROCESS is associated with.
924 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
925 (register Lisp_Object process
)
927 CHECK_PROCESS (process
);
928 return XPROCESS (process
)->buffer
;
931 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
933 doc
: /* Return the marker for the end of the last output from PROCESS. */)
934 (register Lisp_Object process
)
936 CHECK_PROCESS (process
);
937 return XPROCESS (process
)->mark
;
940 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
942 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
943 A value of t means stop accepting output from the process.
945 When a process has a filter, its buffer is not used for output.
946 Instead, each time it does output, the entire string of output is
947 passed to the filter.
949 The filter gets two arguments: the process and the string of output.
950 The string argument is normally a multibyte string, except:
951 - if the process' input coding system is no-conversion or raw-text,
952 it is a unibyte string (the non-converted input), or else
953 - if `default-enable-multibyte-characters' is nil, it is a unibyte
954 string (the result of converting the decoded input multibyte
955 string to unibyte with `string-make-unibyte'). */)
956 (register Lisp_Object process
, Lisp_Object filter
)
958 struct Lisp_Process
*p
;
960 CHECK_PROCESS (process
);
961 p
= XPROCESS (process
);
963 /* Don't signal an error if the process' input file descriptor
964 is closed. This could make debugging Lisp more difficult,
965 for example when doing something like
967 (setq process (start-process ...))
969 (set-process-filter process ...) */
973 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
975 FD_CLR (p
->infd
, &input_wait_mask
);
976 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
978 else if (EQ (p
->filter
, Qt
)
979 /* Network or serial process not stopped: */
980 && !EQ (p
->command
, Qt
))
982 FD_SET (p
->infd
, &input_wait_mask
);
983 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
988 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
989 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
990 setup_process_coding_systems (process
);
994 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
996 doc
: /* Returns the filter function of PROCESS; nil if none.
997 See `set-process-filter' for more info on filter functions. */)
998 (register Lisp_Object process
)
1000 CHECK_PROCESS (process
);
1001 return XPROCESS (process
)->filter
;
1004 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1006 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1007 The sentinel is called as a function when the process changes state.
1008 It gets two arguments: the process, and a string describing the change. */)
1009 (register Lisp_Object process
, Lisp_Object sentinel
)
1011 struct Lisp_Process
*p
;
1013 CHECK_PROCESS (process
);
1014 p
= XPROCESS (process
);
1016 p
->sentinel
= sentinel
;
1017 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1018 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1022 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1024 doc
: /* Return the sentinel of PROCESS; nil if none.
1025 See `set-process-sentinel' for more info on sentinels. */)
1026 (register Lisp_Object process
)
1028 CHECK_PROCESS (process
);
1029 return XPROCESS (process
)->sentinel
;
1032 DEFUN ("set-process-window-size", Fset_process_window_size
,
1033 Sset_process_window_size
, 3, 3, 0,
1034 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1035 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1037 CHECK_PROCESS (process
);
1038 CHECK_NATNUM (height
);
1039 CHECK_NATNUM (width
);
1041 if (XPROCESS (process
)->infd
< 0
1042 || set_window_size (XPROCESS (process
)->infd
,
1043 XINT (height
), XINT (width
)) <= 0)
1049 DEFUN ("set-process-inherit-coding-system-flag",
1050 Fset_process_inherit_coding_system_flag
,
1051 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1052 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1053 If the second argument FLAG is non-nil, then the variable
1054 `buffer-file-coding-system' of the buffer associated with PROCESS
1055 will be bound to the value of the coding system used to decode
1058 This is useful when the coding system specified for the process buffer
1059 leaves either the character code conversion or the end-of-line conversion
1060 unspecified, or if the coding system used to decode the process output
1061 is more appropriate for saving the process buffer.
1063 Binding the variable `inherit-process-coding-system' to non-nil before
1064 starting the process is an alternative way of setting the inherit flag
1065 for the process which will run. */)
1066 (register Lisp_Object process
, Lisp_Object flag
)
1068 CHECK_PROCESS (process
);
1069 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1073 DEFUN ("set-process-query-on-exit-flag",
1074 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1076 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1077 If the second argument FLAG is non-nil, Emacs will query the user before
1078 exiting or killing a buffer if PROCESS is running. */)
1079 (register Lisp_Object process
, Lisp_Object flag
)
1081 CHECK_PROCESS (process
);
1082 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1086 DEFUN ("process-query-on-exit-flag",
1087 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1089 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1090 (register Lisp_Object process
)
1092 CHECK_PROCESS (process
);
1093 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1096 #ifdef DATAGRAM_SOCKETS
1097 Lisp_Object
Fprocess_datagram_address (Lisp_Object process
);
1100 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1102 doc
: /* Return the contact info of PROCESS; t for a real child.
1103 For a network or serial connection, the value depends on the optional
1104 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1105 SERVICE) for a network connection or (PORT SPEED) for a serial
1106 connection. If KEY is t, the complete contact information for the
1107 connection is returned, else the specific value for the keyword KEY is
1108 returned. See `make-network-process' or `make-serial-process' for a
1109 list of keywords. */)
1110 (register Lisp_Object process
, Lisp_Object key
)
1112 Lisp_Object contact
;
1114 CHECK_PROCESS (process
);
1115 contact
= XPROCESS (process
)->childp
;
1117 #ifdef DATAGRAM_SOCKETS
1118 if (DATAGRAM_CONN_P (process
)
1119 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1120 contact
= Fplist_put (contact
, QCremote
,
1121 Fprocess_datagram_address (process
));
1124 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1126 if (NILP (key
) && NETCONN_P (process
))
1127 return Fcons (Fplist_get (contact
, QChost
),
1128 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1129 if (NILP (key
) && SERIALCONN_P (process
))
1130 return Fcons (Fplist_get (contact
, QCport
),
1131 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1132 return Fplist_get (contact
, key
);
1135 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1137 doc
: /* Return the plist of PROCESS. */)
1138 (register Lisp_Object process
)
1140 CHECK_PROCESS (process
);
1141 return XPROCESS (process
)->plist
;
1144 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1146 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1147 (register Lisp_Object process
, Lisp_Object plist
)
1149 CHECK_PROCESS (process
);
1152 XPROCESS (process
)->plist
= plist
;
1156 #if 0 /* Turned off because we don't currently record this info
1157 in the process. Perhaps add it. */
1158 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1159 doc
: /* Return the connection type of PROCESS.
1160 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1161 a socket connection. */)
1162 (Lisp_Object process
)
1164 return XPROCESS (process
)->type
;
1168 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1169 doc
: /* Return the connection type of PROCESS.
1170 The value is either the symbol `real', `network', or `serial'.
1171 PROCESS may be a process, a buffer, the name of a process or buffer, or
1172 nil, indicating the current buffer's process. */)
1173 (Lisp_Object process
)
1176 proc
= get_process (process
);
1177 return XPROCESS (proc
)->type
;
1180 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1182 doc
: /* Convert network ADDRESS from internal format to a string.
1183 A 4 or 5 element vector represents an IPv4 address (with port number).
1184 An 8 or 9 element vector represents an IPv6 address (with port number).
1185 If optional second argument OMIT-PORT is non-nil, don't include a port
1186 number in the string, even when present in ADDRESS.
1187 Returns nil if format of ADDRESS is invalid. */)
1188 (Lisp_Object address
, Lisp_Object omit_port
)
1193 if (STRINGP (address
)) /* AF_LOCAL */
1196 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1198 register struct Lisp_Vector
*p
= XVECTOR (address
);
1199 Lisp_Object args
[10];
1202 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1204 args
[0] = build_string ("%d.%d.%d.%d");
1207 else if (p
->size
== 5)
1209 args
[0] = build_string ("%d.%d.%d.%d:%d");
1212 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1214 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1217 else if (p
->size
== 9)
1219 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1225 for (i
= 0; i
< nargs
; i
++)
1227 EMACS_INT element
= XINT (p
->contents
[i
]);
1229 if (element
< 0 || element
> 65535)
1232 if (nargs
<= 5 /* IPv4 */
1233 && i
< 4 /* host, not port */
1237 args
[i
+1] = p
->contents
[i
];
1240 return Fformat (nargs
+1, args
);
1243 if (CONSP (address
))
1245 Lisp_Object args
[2];
1246 args
[0] = build_string ("<Family %d>");
1247 args
[1] = Fcar (address
);
1248 return Fformat (2, args
);
1255 list_processes_1 (Lisp_Object query_only
)
1257 register Lisp_Object tail
, tem
;
1258 Lisp_Object proc
, minspace
, tem1
;
1259 register struct Lisp_Process
*p
;
1261 int w_proc
, w_buffer
, w_tty
;
1263 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1265 w_proc
= 4; /* Proc */
1266 w_buffer
= 6; /* Buffer */
1267 w_tty
= 0; /* Omit if no ttys */
1269 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1273 proc
= Fcdr (XCAR (tail
));
1274 p
= XPROCESS (proc
);
1277 if (!NILP (query_only
) && p
->kill_without_query
)
1279 if (STRINGP (p
->name
)
1280 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1282 if (!NILP (p
->buffer
))
1284 if (NILP (XBUFFER (p
->buffer
)->name
))
1287 w_buffer
= 8; /* (Killed) */
1289 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1292 if (STRINGP (p
->tty_name
)
1293 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1297 XSETFASTINT (i_status
, w_proc
+ 1);
1298 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1301 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1302 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1307 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1310 XSETFASTINT (minspace
, 1);
1312 set_buffer_internal (XBUFFER (Vstandard_output
));
1313 current_buffer
->undo_list
= Qt
;
1315 current_buffer
->truncate_lines
= Qt
;
1317 write_string ("Proc", -1);
1318 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1319 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1322 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1324 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1325 write_string ("\n", -1);
1327 write_string ("----", -1);
1328 Findent_to (i_status
, minspace
); write_string ("------", -1);
1329 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1332 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1334 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1335 write_string ("\n", -1);
1337 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1341 proc
= Fcdr (XCAR (tail
));
1342 p
= XPROCESS (proc
);
1345 if (!NILP (query_only
) && p
->kill_without_query
)
1348 Finsert (1, &p
->name
);
1349 Findent_to (i_status
, minspace
);
1351 if (p
->raw_status_new
)
1354 if (CONSP (p
->status
))
1355 symbol
= XCAR (p
->status
);
1357 if (EQ (symbol
, Qsignal
))
1360 tem
= Fcar (Fcdr (p
->status
));
1361 Fprinc (symbol
, Qnil
);
1363 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1365 if (EQ (symbol
, Qexit
))
1366 write_string ("closed", -1);
1367 else if (EQ (p
->command
, Qt
))
1368 write_string ("stopped", -1);
1369 else if (EQ (symbol
, Qrun
))
1370 write_string ("open", -1);
1372 Fprinc (symbol
, Qnil
);
1374 else if (SERIALCONN1_P (p
))
1376 write_string ("running", -1);
1379 Fprinc (symbol
, Qnil
);
1381 if (EQ (symbol
, Qexit
))
1384 tem
= Fcar (Fcdr (p
->status
));
1387 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1388 write_string (tembuf
, -1);
1392 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1395 Findent_to (i_buffer
, minspace
);
1396 if (NILP (p
->buffer
))
1397 insert_string ("(none)");
1398 else if (NILP (XBUFFER (p
->buffer
)->name
))
1399 insert_string ("(Killed)");
1401 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1405 Findent_to (i_tty
, minspace
);
1406 if (STRINGP (p
->tty_name
))
1407 Finsert (1, &p
->tty_name
);
1410 Findent_to (i_command
, minspace
);
1412 if (EQ (p
->status
, Qlisten
))
1414 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1415 if (INTEGERP (port
))
1416 port
= Fnumber_to_string (port
);
1418 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1419 sprintf (tembuf
, "(network %s server on %s)\n",
1420 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1421 (STRINGP (port
) ? SSDATA (port
) : "?"));
1422 insert_string (tembuf
);
1424 else if (NETCONN1_P (p
))
1426 /* For a local socket, there is no host name,
1427 so display service instead. */
1428 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1429 if (!STRINGP (host
))
1431 host
= Fplist_get (p
->childp
, QCservice
);
1432 if (INTEGERP (host
))
1433 host
= Fnumber_to_string (host
);
1436 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1437 sprintf (tembuf
, "(network %s connection to %s)\n",
1438 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1439 (STRINGP (host
) ? SSDATA (host
) : "?"));
1440 insert_string (tembuf
);
1442 else if (SERIALCONN1_P (p
))
1444 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1445 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1446 insert_string ("(serial port ");
1448 insert_string (SDATA (port
));
1450 insert_string ("?");
1451 if (INTEGERP (speed
))
1453 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1454 insert_string (tembuf
);
1456 insert_string (")\n");
1470 insert_string (" ");
1472 insert_string ("\n");
1477 status_notify (NULL
);
1478 redisplay_preserve_echo_area (13);
1483 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1484 doc
: /* Display a list of all processes.
1485 If optional argument QUERY-ONLY is non-nil, only processes with
1486 the query-on-exit flag set will be listed.
1487 Any process listed as exited or signaled is actually eliminated
1488 after the listing is made. */)
1489 (Lisp_Object query_only
)
1491 internal_with_output_to_temp_buffer ("*Process List*",
1492 list_processes_1
, query_only
);
1496 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1497 doc
: /* Return a list of all processes. */)
1500 return Fmapcar (Qcdr
, Vprocess_alist
);
1503 /* Starting asynchronous inferior processes. */
1505 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1507 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1508 doc
: /* Start a program in a subprocess. Return the process object for it.
1509 NAME is name for process. It is modified if necessary to make it unique.
1510 BUFFER is the buffer (or buffer name) to associate with the process.
1512 Process output (both standard output and standard error streams) goes
1513 at end of BUFFER, unless you specify an output stream or filter
1514 function to handle the output. BUFFER may also be nil, meaning that
1515 this process is not associated with any buffer.
1517 PROGRAM is the program file name. It is searched for in PATH. If
1518 nil, just associate a pty with the buffer. Remaining arguments are
1519 strings to give program as arguments.
1521 If you want to separate standard output from standard error, invoke
1522 the command through a shell and redirect one of them using the shell
1525 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1526 (int nargs
, register Lisp_Object
*args
)
1528 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1529 register unsigned char **new_argv
;
1531 int count
= SPECPDL_INDEX ();
1535 buffer
= Fget_buffer_create (buffer
);
1537 /* Make sure that the child will be able to chdir to the current
1538 buffer's current directory, or its unhandled equivalent. We
1539 can't just have the child check for an error when it does the
1540 chdir, since it's in a vfork.
1542 We have to GCPRO around this because Fexpand_file_name and
1543 Funhandled_file_name_directory might call a file name handling
1544 function. The argument list is protected by the caller, so all
1545 we really have to worry about is buffer. */
1547 struct gcpro gcpro1
, gcpro2
;
1549 current_dir
= current_buffer
->directory
;
1551 GCPRO2 (buffer
, current_dir
);
1553 current_dir
= Funhandled_file_name_directory (current_dir
);
1554 if (NILP (current_dir
))
1555 /* If the file name handler says that current_dir is unreachable, use
1556 a sensible default. */
1557 current_dir
= build_string ("~/");
1558 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1559 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1560 report_file_error ("Setting current directory",
1561 Fcons (current_buffer
->directory
, Qnil
));
1567 CHECK_STRING (name
);
1571 if (!NILP (program
))
1572 CHECK_STRING (program
);
1574 proc
= make_process (name
);
1575 /* If an error occurs and we can't start the process, we want to
1576 remove it from the process list. This means that each error
1577 check in create_process doesn't need to call remove_process
1578 itself; it's all taken care of here. */
1579 record_unwind_protect (start_process_unwind
, proc
);
1581 XPROCESS (proc
)->childp
= Qt
;
1582 XPROCESS (proc
)->plist
= Qnil
;
1583 XPROCESS (proc
)->type
= Qreal
;
1584 XPROCESS (proc
)->buffer
= buffer
;
1585 XPROCESS (proc
)->sentinel
= Qnil
;
1586 XPROCESS (proc
)->filter
= Qnil
;
1587 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1590 /* AKA GNUTLS_INITSTAGE(proc). */
1591 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1592 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1595 #ifdef ADAPTIVE_READ_BUFFERING
1596 XPROCESS (proc
)->adaptive_read_buffering
1597 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1598 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1601 /* Make the process marker point into the process buffer (if any). */
1602 if (BUFFERP (buffer
))
1603 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1604 BUF_ZV (XBUFFER (buffer
)),
1605 BUF_ZV_BYTE (XBUFFER (buffer
)));
1608 /* Decide coding systems for communicating with the process. Here
1609 we don't setup the structure coding_system nor pay attention to
1610 unibyte mode. They are done in create_process. */
1612 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1613 Lisp_Object coding_systems
= Qt
;
1614 Lisp_Object val
, *args2
;
1615 struct gcpro gcpro1
, gcpro2
;
1617 val
= Vcoding_system_for_read
;
1620 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1621 args2
[0] = Qstart_process
;
1622 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1623 GCPRO2 (proc
, current_dir
);
1624 if (!NILP (program
))
1625 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1627 if (CONSP (coding_systems
))
1628 val
= XCAR (coding_systems
);
1629 else if (CONSP (Vdefault_process_coding_system
))
1630 val
= XCAR (Vdefault_process_coding_system
);
1632 XPROCESS (proc
)->decode_coding_system
= val
;
1634 val
= Vcoding_system_for_write
;
1637 if (EQ (coding_systems
, Qt
))
1639 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1640 args2
[0] = Qstart_process
;
1641 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1642 GCPRO2 (proc
, current_dir
);
1643 if (!NILP (program
))
1644 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1647 if (CONSP (coding_systems
))
1648 val
= XCDR (coding_systems
);
1649 else if (CONSP (Vdefault_process_coding_system
))
1650 val
= XCDR (Vdefault_process_coding_system
);
1652 XPROCESS (proc
)->encode_coding_system
= val
;
1653 /* Note: At this momemnt, the above coding system may leave
1654 text-conversion or eol-conversion unspecified. They will be
1655 decided after we read output from the process and decode it by
1656 some coding system, or just before we actually send a text to
1661 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1662 XPROCESS (proc
)->decoding_carryover
= 0;
1663 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1665 XPROCESS (proc
)->inherit_coding_system_flag
1666 = !(NILP (buffer
) || !inherit_process_coding_system
);
1668 if (!NILP (program
))
1670 /* If program file name is not absolute, search our path for it.
1671 Put the name we will really use in TEM. */
1672 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1673 && !(SCHARS (program
) > 1
1674 && IS_DEVICE_SEP (SREF (program
, 1))))
1676 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1679 GCPRO4 (name
, program
, buffer
, current_dir
);
1680 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1683 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1684 tem
= Fexpand_file_name (tem
, Qnil
);
1688 if (!NILP (Ffile_directory_p (program
)))
1689 error ("Specified program for new process is a directory");
1693 /* If program file name starts with /: for quoting a magic name,
1695 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1696 && SREF (tem
, 1) == ':')
1697 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1700 Lisp_Object arg_encoding
= Qnil
;
1701 struct gcpro gcpro1
;
1704 /* Encode the file name and put it in NEW_ARGV.
1705 That's where the child will use it to execute the program. */
1706 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1708 /* Here we encode arguments by the coding system used for sending
1709 data to the process. We don't support using different coding
1710 systems for encoding arguments and for encoding data sent to the
1713 for (i
= 3; i
< nargs
; i
++)
1715 tem
= Fcons (args
[i
], tem
);
1716 CHECK_STRING (XCAR (tem
));
1717 if (STRING_MULTIBYTE (XCAR (tem
)))
1719 if (NILP (arg_encoding
))
1720 arg_encoding
= (complement_process_encoding_system
1721 (XPROCESS (proc
)->encode_coding_system
));
1723 code_convert_string_norecord
1724 (XCAR (tem
), arg_encoding
, 1));
1731 /* Now that everything is encoded we can collect the strings into
1733 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1734 new_argv
[nargs
- 2] = 0;
1736 for (i
= nargs
- 3; i
>= 0; i
--)
1738 new_argv
[i
] = SDATA (XCAR (tem
));
1742 create_process (proc
, (char **) new_argv
, current_dir
);
1747 return unbind_to (count
, proc
);
1750 /* This function is the unwind_protect form for Fstart_process. If
1751 PROC doesn't have its pid set, then we know someone has signaled
1752 an error and the process wasn't started successfully, so we should
1753 remove it from the process list. */
1755 start_process_unwind (Lisp_Object proc
)
1757 if (!PROCESSP (proc
))
1760 /* Was PROC started successfully? */
1761 if (XPROCESS (proc
)->pid
== -1)
1762 remove_process (proc
);
1768 create_process_1 (struct atimer
*timer
)
1770 /* Nothing to do. */
1775 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1777 int inchannel
, outchannel
;
1780 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1781 int wait_child_setup
[2];
1785 struct sigaction sigint_action
;
1786 struct sigaction sigquit_action
;
1788 struct sigaction sighup_action
;
1790 /* Use volatile to protect variables from being clobbered by longjmp. */
1791 volatile int forkin
, forkout
;
1792 volatile int pty_flag
= 0;
1794 extern char **environ
;
1797 inchannel
= outchannel
= -1;
1800 if (!NILP (Vprocess_connection_type
))
1801 outchannel
= inchannel
= allocate_pty ();
1805 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1806 /* On most USG systems it does not work to open the pty's tty here,
1807 then close it and reopen it in the child. */
1809 /* Don't let this terminal become our controlling terminal
1810 (in case we don't have one). */
1811 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1813 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1816 report_file_error ("Opening pty", Qnil
);
1818 forkin
= forkout
= -1;
1819 #endif /* not USG, or USG_SUBTTY_WORKS */
1823 #endif /* HAVE_PTYS */
1828 report_file_error ("Creating pipe", Qnil
);
1834 emacs_close (inchannel
);
1835 emacs_close (forkout
);
1836 report_file_error ("Creating pipe", Qnil
);
1842 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1846 tem
= pipe (wait_child_setup
);
1848 report_file_error ("Creating pipe", Qnil
);
1849 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1851 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1854 emacs_close (wait_child_setup
[0]);
1855 emacs_close (wait_child_setup
[1]);
1856 report_file_error ("Setting file descriptor flags", Qnil
);
1862 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1863 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1866 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1867 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1871 /* Record this as an active process, with its channels.
1872 As a result, child_setup will close Emacs's side of the pipes. */
1873 chan_process
[inchannel
] = process
;
1874 XPROCESS (process
)->infd
= inchannel
;
1875 XPROCESS (process
)->outfd
= outchannel
;
1877 /* Previously we recorded the tty descriptor used in the subprocess.
1878 It was only used for getting the foreground tty process, so now
1879 we just reopen the device (see emacs_get_tty_pgrp) as this is
1880 more portable (see USG_SUBTTY_WORKS above). */
1882 XPROCESS (process
)->pty_flag
= pty_flag
;
1883 XPROCESS (process
)->status
= Qrun
;
1884 setup_process_coding_systems (process
);
1886 /* Delay interrupts until we have a chance to store
1887 the new fork's pid in its process structure */
1888 sigemptyset (&blocked
);
1890 sigaddset (&blocked
, SIGCHLD
);
1892 #ifdef HAVE_WORKING_VFORK
1893 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1894 this sets the parent's signal handlers as well as the child's.
1895 So delay all interrupts whose handlers the child might munge,
1896 and record the current handlers so they can be restored later. */
1897 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1898 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1900 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1902 #endif /* HAVE_WORKING_VFORK */
1903 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1905 FD_SET (inchannel
, &input_wait_mask
);
1906 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1907 if (inchannel
> max_process_desc
)
1908 max_process_desc
= inchannel
;
1910 /* Until we store the proper pid, enable sigchld_handler
1911 to recognize an unknown pid as standing for this process.
1912 It is very important not to let this `marker' value stay
1913 in the table after this function has returned; if it does
1914 it might cause call-process to hang and subsequent asynchronous
1915 processes to get their return values scrambled. */
1916 XPROCESS (process
)->pid
= -1;
1921 /* child_setup must clobber environ on systems with true vfork.
1922 Protect it from permanent change. */
1923 char **save_environ
= environ
;
1925 current_dir
= ENCODE_FILE (current_dir
);
1930 #endif /* not WINDOWSNT */
1932 int xforkin
= forkin
;
1933 int xforkout
= forkout
;
1935 #if 0 /* This was probably a mistake--it duplicates code later on,
1936 but fails to handle all the cases. */
1937 /* Make sure SIGCHLD is not blocked in the child. */
1938 sigsetmask (SIGEMPTYMASK
);
1941 /* Make the pty be the controlling terminal of the process. */
1943 /* First, disconnect its current controlling terminal. */
1945 /* We tried doing setsid only if pty_flag, but it caused
1946 process_set_signal to fail on SGI when using a pipe. */
1948 /* Make the pty's terminal the controlling terminal. */
1949 if (pty_flag
&& xforkin
>= 0)
1952 /* We ignore the return value
1953 because faith@cs.unc.edu says that is necessary on Linux. */
1954 ioctl (xforkin
, TIOCSCTTY
, 0);
1957 #else /* not HAVE_SETSID */
1959 /* It's very important to call setpgrp here and no time
1960 afterwards. Otherwise, we lose our controlling tty which
1961 is set when we open the pty. */
1964 #endif /* not HAVE_SETSID */
1965 #if defined (LDISC1)
1966 if (pty_flag
&& xforkin
>= 0)
1969 tcgetattr (xforkin
, &t
);
1971 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1972 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1975 #if defined (NTTYDISC) && defined (TIOCSETD)
1976 if (pty_flag
&& xforkin
>= 0)
1978 /* Use new line discipline. */
1979 int ldisc
= NTTYDISC
;
1980 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1985 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1986 can do TIOCSPGRP only to the process's controlling tty. */
1989 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1990 I can't test it since I don't have 4.3. */
1991 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1994 ioctl (j
, TIOCNOTTY
, 0);
1998 /* In order to get a controlling terminal on some versions
1999 of BSD, it is necessary to put the process in pgrp 0
2000 before it opens the terminal. */
2008 #endif /* TIOCNOTTY */
2010 #if !defined (DONT_REOPEN_PTY)
2011 /*** There is a suggestion that this ought to be a
2012 conditional on TIOCSPGRP,
2013 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2014 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2015 that system does seem to need this code, even though
2016 both HAVE_SETSID and TIOCSCTTY are defined. */
2017 /* Now close the pty (if we had it open) and reopen it.
2018 This makes the pty the controlling terminal of the subprocess. */
2022 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2025 emacs_close (xforkin
);
2026 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2030 emacs_write (1, "Couldn't open the pty terminal ", 31);
2031 emacs_write (1, pty_name
, strlen (pty_name
));
2032 emacs_write (1, "\n", 1);
2037 #endif /* not DONT_REOPEN_PTY */
2039 #ifdef SETUP_SLAVE_PTY
2044 #endif /* SETUP_SLAVE_PTY */
2046 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2047 Now reenable it in the child, so it will die when we want it to. */
2049 signal (SIGHUP
, SIG_DFL
);
2051 #endif /* HAVE_PTYS */
2053 signal (SIGINT
, SIG_DFL
);
2054 signal (SIGQUIT
, SIG_DFL
);
2056 /* Stop blocking signals in the child. */
2057 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2060 child_setup_tty (xforkout
);
2062 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2063 new_argv
, 1, current_dir
);
2064 #else /* not WINDOWSNT */
2066 emacs_close (wait_child_setup
[0]);
2068 child_setup (xforkin
, xforkout
, xforkout
,
2069 new_argv
, 1, current_dir
);
2070 #endif /* not WINDOWSNT */
2072 environ
= save_environ
;
2077 /* This runs in the Emacs process. */
2081 emacs_close (forkin
);
2082 if (forkin
!= forkout
&& forkout
>= 0)
2083 emacs_close (forkout
);
2087 /* vfork succeeded. */
2088 XPROCESS (process
)->pid
= pid
;
2091 register_child (pid
, inchannel
);
2092 #endif /* WINDOWSNT */
2094 /* If the subfork execv fails, and it exits,
2095 this close hangs. I don't know why.
2096 So have an interrupt jar it loose. */
2098 struct atimer
*timer
;
2102 EMACS_SET_SECS_USECS (offset
, 1, 0);
2103 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2106 emacs_close (forkin
);
2108 cancel_atimer (timer
);
2112 if (forkin
!= forkout
&& forkout
>= 0)
2113 emacs_close (forkout
);
2117 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2120 XPROCESS (process
)->tty_name
= Qnil
;
2122 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2123 /* Wait for child_setup to complete in case that vfork is
2124 actually defined as fork. The descriptor wait_child_setup[1]
2125 of a pipe is closed at the child side either by close-on-exec
2126 on successful execvp or the _exit call in child_setup. */
2130 emacs_close (wait_child_setup
[1]);
2131 emacs_read (wait_child_setup
[0], &dummy
, 1);
2132 emacs_close (wait_child_setup
[0]);
2137 /* Restore the signal state whether vfork succeeded or not.
2138 (We will signal an error, below, if it failed.) */
2139 #ifdef HAVE_WORKING_VFORK
2140 /* Restore the parent's signal handlers. */
2141 sigaction (SIGINT
, &sigint_action
, 0);
2142 sigaction (SIGQUIT
, &sigquit_action
, 0);
2144 sigaction (SIGHUP
, &sighup_action
, 0);
2146 #endif /* HAVE_WORKING_VFORK */
2147 /* Stop blocking signals in the parent. */
2148 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2150 /* Now generate the error if vfork failed. */
2152 report_file_error ("Doing vfork", Qnil
);
2156 create_pty (Lisp_Object process
)
2158 int inchannel
, outchannel
;
2160 /* Use volatile to protect variables from being clobbered by longjmp. */
2161 volatile int forkin
, forkout
;
2162 volatile int pty_flag
= 0;
2164 inchannel
= outchannel
= -1;
2167 if (!NILP (Vprocess_connection_type
))
2168 outchannel
= inchannel
= allocate_pty ();
2172 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2173 /* On most USG systems it does not work to open the pty's tty here,
2174 then close it and reopen it in the child. */
2176 /* Don't let this terminal become our controlling terminal
2177 (in case we don't have one). */
2178 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2180 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2183 report_file_error ("Opening pty", Qnil
);
2184 #if defined (DONT_REOPEN_PTY)
2185 /* In the case that vfork is defined as fork, the parent process
2186 (Emacs) may send some data before the child process completes
2187 tty options setup. So we setup tty before forking. */
2188 child_setup_tty (forkout
);
2189 #endif /* DONT_REOPEN_PTY */
2191 forkin
= forkout
= -1;
2192 #endif /* not USG, or USG_SUBTTY_WORKS */
2195 #endif /* HAVE_PTYS */
2198 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2199 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2202 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2203 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2207 /* Record this as an active process, with its channels.
2208 As a result, child_setup will close Emacs's side of the pipes. */
2209 chan_process
[inchannel
] = process
;
2210 XPROCESS (process
)->infd
= inchannel
;
2211 XPROCESS (process
)->outfd
= outchannel
;
2213 /* Previously we recorded the tty descriptor used in the subprocess.
2214 It was only used for getting the foreground tty process, so now
2215 we just reopen the device (see emacs_get_tty_pgrp) as this is
2216 more portable (see USG_SUBTTY_WORKS above). */
2218 XPROCESS (process
)->pty_flag
= pty_flag
;
2219 XPROCESS (process
)->status
= Qrun
;
2220 setup_process_coding_systems (process
);
2222 FD_SET (inchannel
, &input_wait_mask
);
2223 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2224 if (inchannel
> max_process_desc
)
2225 max_process_desc
= inchannel
;
2227 XPROCESS (process
)->pid
= -2;
2230 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2233 XPROCESS (process
)->tty_name
= Qnil
;
2237 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2238 The address family of sa is not included in the result. */
2241 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
2243 Lisp_Object address
;
2246 register struct Lisp_Vector
*p
;
2248 /* Workaround for a bug in getsockname on BSD: Names bound to
2249 sockets in the UNIX domain are inaccessible; getsockname returns
2250 a zero length name. */
2251 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2252 return empty_unibyte_string
;
2254 switch (sa
->sa_family
)
2258 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2259 len
= sizeof (sin
->sin_addr
) + 1;
2260 address
= Fmake_vector (make_number (len
), Qnil
);
2261 p
= XVECTOR (address
);
2262 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2263 cp
= (unsigned char *) &sin
->sin_addr
;
2269 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2270 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2271 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2272 address
= Fmake_vector (make_number (len
), Qnil
);
2273 p
= XVECTOR (address
);
2274 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2275 for (i
= 0; i
< len
; i
++)
2276 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2280 #ifdef HAVE_LOCAL_SOCKETS
2283 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2284 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2285 if (sockun
->sun_path
[i
] == 0)
2287 return make_unibyte_string (sockun
->sun_path
, i
);
2291 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2292 address
= Fcons (make_number (sa
->sa_family
),
2293 Fmake_vector (make_number (len
), Qnil
));
2294 p
= XVECTOR (XCDR (address
));
2295 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2301 p
->contents
[i
++] = make_number (*cp
++);
2307 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2310 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2312 register struct Lisp_Vector
*p
;
2314 if (VECTORP (address
))
2316 p
= XVECTOR (address
);
2320 return sizeof (struct sockaddr_in
);
2323 else if (p
->size
== 9)
2325 *familyp
= AF_INET6
;
2326 return sizeof (struct sockaddr_in6
);
2330 #ifdef HAVE_LOCAL_SOCKETS
2331 else if (STRINGP (address
))
2333 *familyp
= AF_LOCAL
;
2334 return sizeof (struct sockaddr_un
);
2337 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2339 struct sockaddr
*sa
;
2340 *familyp
= XINT (XCAR (address
));
2341 p
= XVECTOR (XCDR (address
));
2342 return p
->size
+ sizeof (sa
->sa_family
);
2347 /* Convert an address object (vector or string) to an internal sockaddr.
2349 The address format has been basically validated by
2350 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2351 it could have come from user data. So if FAMILY is not valid,
2352 we return after zeroing *SA. */
2355 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2357 register struct Lisp_Vector
*p
;
2358 register unsigned char *cp
= NULL
;
2361 memset (sa
, 0, len
);
2363 if (VECTORP (address
))
2365 p
= XVECTOR (address
);
2366 if (family
== AF_INET
)
2368 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2369 len
= sizeof (sin
->sin_addr
) + 1;
2370 i
= XINT (p
->contents
[--len
]);
2371 sin
->sin_port
= htons (i
);
2372 cp
= (unsigned char *)&sin
->sin_addr
;
2373 sa
->sa_family
= family
;
2376 else if (family
== AF_INET6
)
2378 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2379 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2380 len
= sizeof (sin6
->sin6_addr
) + 1;
2381 i
= XINT (p
->contents
[--len
]);
2382 sin6
->sin6_port
= htons (i
);
2383 for (i
= 0; i
< len
; i
++)
2384 if (INTEGERP (p
->contents
[i
]))
2386 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2389 sa
->sa_family
= family
;
2396 else if (STRINGP (address
))
2398 #ifdef HAVE_LOCAL_SOCKETS
2399 if (family
== AF_LOCAL
)
2401 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2402 cp
= SDATA (address
);
2403 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2404 sockun
->sun_path
[i
] = *cp
++;
2405 sa
->sa_family
= family
;
2412 p
= XVECTOR (XCDR (address
));
2413 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2416 for (i
= 0; i
< len
; i
++)
2417 if (INTEGERP (p
->contents
[i
]))
2418 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2421 #ifdef DATAGRAM_SOCKETS
2422 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2424 doc
: /* Get the current datagram address associated with PROCESS. */)
2425 (Lisp_Object process
)
2429 CHECK_PROCESS (process
);
2431 if (!DATAGRAM_CONN_P (process
))
2434 channel
= XPROCESS (process
)->infd
;
2435 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2436 datagram_address
[channel
].len
);
2439 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2441 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2442 Returns nil upon error setting address, ADDRESS otherwise. */)
2443 (Lisp_Object process
, Lisp_Object address
)
2448 CHECK_PROCESS (process
);
2450 if (!DATAGRAM_CONN_P (process
))
2453 channel
= XPROCESS (process
)->infd
;
2455 len
= get_lisp_to_sockaddr_size (address
, &family
);
2456 if (datagram_address
[channel
].len
!= len
)
2458 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2464 static const struct socket_options
{
2465 /* The name of this option. Should be lowercase version of option
2466 name without SO_ prefix. */
2468 /* Option level SOL_... */
2470 /* Option number SO_... */
2472 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2473 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2474 } socket_options
[] =
2476 #ifdef SO_BINDTODEVICE
2477 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2480 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2483 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2486 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2489 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2492 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2495 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2498 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2500 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2503 /* Set option OPT to value VAL on socket S.
2505 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2506 Signals an error if setting a known option fails.
2510 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2513 const struct socket_options
*sopt
;
2518 name
= SSDATA (SYMBOL_NAME (opt
));
2519 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2520 if (strcmp (name
, sopt
->name
) == 0)
2523 switch (sopt
->opttype
)
2528 optval
= NILP (val
) ? 0 : 1;
2529 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2530 &optval
, sizeof (optval
));
2538 optval
= XINT (val
);
2540 error ("Bad option value for %s", name
);
2541 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2542 &optval
, sizeof (optval
));
2546 #ifdef SO_BINDTODEVICE
2549 char devname
[IFNAMSIZ
+1];
2551 /* This is broken, at least in the Linux 2.4 kernel.
2552 To unbind, the arg must be a zero integer, not the empty string.
2553 This should work on all systems. KFS. 2003-09-23. */
2554 memset (devname
, 0, sizeof devname
);
2557 char *arg
= SSDATA (val
);
2558 int len
= min (strlen (arg
), IFNAMSIZ
);
2559 memcpy (devname
, arg
, len
);
2561 else if (!NILP (val
))
2562 error ("Bad option value for %s", name
);
2563 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2572 struct linger linger
;
2575 linger
.l_linger
= 0;
2577 linger
.l_linger
= XINT (val
);
2579 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2580 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2581 &linger
, sizeof (linger
));
2591 report_file_error ("Cannot set network option",
2592 Fcons (opt
, Fcons (val
, Qnil
)));
2593 return (1 << sopt
->optbit
);
2597 DEFUN ("set-network-process-option",
2598 Fset_network_process_option
, Sset_network_process_option
,
2600 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2601 See `make-network-process' for a list of options and values.
2602 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2603 OPTION is not a supported option, return nil instead; otherwise return t. */)
2604 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2607 struct Lisp_Process
*p
;
2609 CHECK_PROCESS (process
);
2610 p
= XPROCESS (process
);
2611 if (!NETCONN1_P (p
))
2612 error ("Process is not a network process");
2616 error ("Process is not running");
2618 if (set_socket_option (s
, option
, value
))
2620 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2624 if (NILP (no_error
))
2625 error ("Unknown or unsupported option");
2631 DEFUN ("serial-process-configure",
2632 Fserial_process_configure
,
2633 Sserial_process_configure
,
2635 doc
: /* Configure speed, bytesize, etc. of a serial process.
2637 Arguments are specified as keyword/argument pairs. Attributes that
2638 are not given are re-initialized from the process's current
2639 configuration (available via the function `process-contact') or set to
2640 reasonable default values. The following arguments are defined:
2646 -- Any of these arguments can be given to identify the process that is
2647 to be configured. If none of these arguments is given, the current
2648 buffer's process is used.
2650 :speed SPEED -- SPEED is the speed of the serial port in bits per
2651 second, also called baud rate. Any value can be given for SPEED, but
2652 most serial ports work only at a few defined values between 1200 and
2653 115200, with 9600 being the most common value. If SPEED is nil, the
2654 serial port is not configured any further, i.e., all other arguments
2655 are ignored. This may be useful for special serial ports such as
2656 Bluetooth-to-serial converters which can only be configured through AT
2657 commands. A value of nil for SPEED can be used only when passed
2658 through `make-serial-process' or `serial-term'.
2660 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2661 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2663 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2664 `odd' (use odd parity), or the symbol `even' (use even parity). If
2665 PARITY is not given, no parity is used.
2667 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2668 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2669 is not given or nil, 1 stopbit is used.
2671 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2672 flowcontrol to be used, which is either nil (don't use flowcontrol),
2673 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2674 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2675 flowcontrol is used.
2677 `serial-process-configure' is called by `make-serial-process' for the
2678 initial configuration of the serial port.
2682 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2684 \(serial-process-configure
2685 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2687 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2689 usage: (serial-process-configure &rest ARGS) */)
2690 (int nargs
, Lisp_Object
*args
)
2692 struct Lisp_Process
*p
;
2693 Lisp_Object contact
= Qnil
;
2694 Lisp_Object proc
= Qnil
;
2695 struct gcpro gcpro1
;
2697 contact
= Flist (nargs
, args
);
2700 proc
= Fplist_get (contact
, QCprocess
);
2702 proc
= Fplist_get (contact
, QCname
);
2704 proc
= Fplist_get (contact
, QCbuffer
);
2706 proc
= Fplist_get (contact
, QCport
);
2707 proc
= get_process (proc
);
2708 p
= XPROCESS (proc
);
2709 if (!EQ (p
->type
, Qserial
))
2710 error ("Not a serial process");
2712 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2718 serial_configure (p
, contact
);
2724 /* Used by make-serial-process to recover from errors. */
2725 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2727 if (!PROCESSP (proc
))
2729 remove_process (proc
);
2733 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2735 doc
: /* Create and return a serial port process.
2737 In Emacs, serial port connections are represented by process objects,
2738 so input and output work as for subprocesses, and `delete-process'
2739 closes a serial port connection. However, a serial process has no
2740 process id, it cannot be signaled, and the status codes are different
2741 from normal processes.
2743 `make-serial-process' creates a process and a buffer, on which you
2744 probably want to use `process-send-string'. Try \\[serial-term] for
2745 an interactive terminal. See below for examples.
2747 Arguments are specified as keyword/argument pairs. The following
2748 arguments are defined:
2750 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2751 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2752 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2753 the backslashes in strings).
2755 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2756 which is called by `make-serial-process'.
2758 :name NAME -- NAME is the name of the process. If NAME is not given,
2759 the value of PORT is used.
2761 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2762 with the process. Process output goes at the end of that buffer,
2763 unless you specify an output stream or filter function to handle the
2764 output. If BUFFER is not given, the value of NAME is used.
2766 :coding CODING -- If CODING is a symbol, it specifies the coding
2767 system used for both reading and writing for this process. If CODING
2768 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2769 ENCODING is used for writing.
2771 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2772 the process is running. If BOOL is not given, query before exiting.
2774 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2775 In the stopped state, a serial process does not accept incoming data,
2776 but you can send outgoing data. The stopped state is cleared by
2777 `continue-process' and set by `stop-process'.
2779 :filter FILTER -- Install FILTER as the process filter.
2781 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2783 :plist PLIST -- Install PLIST as the initial plist of the process.
2790 -- These arguments are handled by `serial-process-configure', which is
2791 called by `make-serial-process'.
2793 The original argument list, possibly modified by later configuration,
2794 is available via the function `process-contact'.
2798 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2800 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2802 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2804 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2806 usage: (make-serial-process &rest ARGS) */)
2807 (int nargs
, Lisp_Object
*args
)
2810 Lisp_Object proc
, contact
, port
;
2811 struct Lisp_Process
*p
;
2812 struct gcpro gcpro1
;
2813 Lisp_Object name
, buffer
;
2814 Lisp_Object tem
, val
;
2815 int specpdl_count
= -1;
2820 contact
= Flist (nargs
, args
);
2823 port
= Fplist_get (contact
, QCport
);
2825 error ("No port specified");
2826 CHECK_STRING (port
);
2828 if (NILP (Fplist_member (contact
, QCspeed
)))
2829 error (":speed not specified");
2830 if (!NILP (Fplist_get (contact
, QCspeed
)))
2831 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2833 name
= Fplist_get (contact
, QCname
);
2836 CHECK_STRING (name
);
2837 proc
= make_process (name
);
2838 specpdl_count
= SPECPDL_INDEX ();
2839 record_unwind_protect (make_serial_process_unwind
, proc
);
2840 p
= XPROCESS (proc
);
2842 fd
= serial_open (SSDATA (port
));
2845 if (fd
> max_process_desc
)
2846 max_process_desc
= fd
;
2847 chan_process
[fd
] = proc
;
2849 buffer
= Fplist_get (contact
, QCbuffer
);
2852 buffer
= Fget_buffer_create (buffer
);
2855 p
->childp
= contact
;
2856 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2858 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2859 p
->filter
= Fplist_get (contact
, QCfilter
);
2861 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2862 p
->kill_without_query
= 1;
2863 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2867 if (!EQ (p
->command
, Qt
))
2869 FD_SET (fd
, &input_wait_mask
);
2870 FD_SET (fd
, &non_keyboard_wait_mask
);
2873 if (BUFFERP (buffer
))
2875 set_marker_both (p
->mark
, buffer
,
2876 BUF_ZV (XBUFFER (buffer
)),
2877 BUF_ZV_BYTE (XBUFFER (buffer
)));
2880 tem
= Fplist_member (contact
, QCcoding
);
2881 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2887 val
= XCAR (XCDR (tem
));
2891 else if (!NILP (Vcoding_system_for_read
))
2892 val
= Vcoding_system_for_read
;
2893 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
2894 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
2896 p
->decode_coding_system
= val
;
2901 val
= XCAR (XCDR (tem
));
2905 else if (!NILP (Vcoding_system_for_write
))
2906 val
= Vcoding_system_for_write
;
2907 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
2908 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
2910 p
->encode_coding_system
= val
;
2912 setup_process_coding_systems (proc
);
2913 p
->decoding_buf
= make_uninit_string (0);
2914 p
->decoding_carryover
= 0;
2915 p
->encoding_buf
= make_uninit_string (0);
2916 p
->inherit_coding_system_flag
2917 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2919 Fserial_process_configure (nargs
, args
);
2921 specpdl_ptr
= specpdl
+ specpdl_count
;
2927 /* Create a network stream/datagram client/server process. Treated
2928 exactly like a normal process when reading and writing. Primary
2929 differences are in status display and process deletion. A network
2930 connection has no PID; you cannot signal it. All you can do is
2931 stop/continue it and deactivate/close it via delete-process */
2933 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2935 doc
: /* Create and return a network server or client process.
2937 In Emacs, network connections are represented by process objects, so
2938 input and output work as for subprocesses and `delete-process' closes
2939 a network connection. However, a network process has no process id,
2940 it cannot be signaled, and the status codes are different from normal
2943 Arguments are specified as keyword/argument pairs. The following
2944 arguments are defined:
2946 :name NAME -- NAME is name for process. It is modified if necessary
2949 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2950 with the process. Process output goes at end of that buffer, unless
2951 you specify an output stream or filter function to handle the output.
2952 BUFFER may be also nil, meaning that this process is not associated
2955 :host HOST -- HOST is name of the host to connect to, or its IP
2956 address. The symbol `local' specifies the local host. If specified
2957 for a server process, it must be a valid name or address for the local
2958 host, and only clients connecting to that address will be accepted.
2960 :service SERVICE -- SERVICE is name of the service desired, or an
2961 integer specifying a port number to connect to. If SERVICE is t,
2962 a random port number is selected for the server. (If Emacs was
2963 compiled with getaddrinfo, a port number can also be specified as a
2964 string, e.g. "80", as well as an integer. This is not portable.)
2966 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2967 stream type connection, `datagram' creates a datagram type connection,
2968 `seqpacket' creates a reliable datagram connection.
2970 :family FAMILY -- FAMILY is the address (and protocol) family for the
2971 service specified by HOST and SERVICE. The default (nil) is to use
2972 whatever address family (IPv4 or IPv6) that is defined for the host
2973 and port number specified by HOST and SERVICE. Other address families
2975 local -- for a local (i.e. UNIX) address specified by SERVICE.
2976 ipv4 -- use IPv4 address family only.
2977 ipv6 -- use IPv6 address family only.
2979 :local ADDRESS -- ADDRESS is the local address used for the connection.
2980 This parameter is ignored when opening a client process. When specified
2981 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2983 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2984 connection. This parameter is ignored when opening a stream server
2985 process. For a datagram server process, it specifies the initial
2986 setting of the remote datagram address. When specified for a client
2987 process, the FAMILY, HOST, and SERVICE args are ignored.
2989 The format of ADDRESS depends on the address family:
2990 - An IPv4 address is represented as an vector of integers [A B C D P]
2991 corresponding to numeric IP address A.B.C.D and port number P.
2992 - A local address is represented as a string with the address in the
2993 local address space.
2994 - An "unsupported family" address is represented by a cons (F . AV)
2995 where F is the family number and AV is a vector containing the socket
2996 address data with one element per address data byte. Do not rely on
2997 this format in portable code, as it may depend on implementation
2998 defined constants, data sizes, and data structure alignment.
3000 :coding CODING -- If CODING is a symbol, it specifies the coding
3001 system used for both reading and writing for this process. If CODING
3002 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3003 ENCODING is used for writing.
3005 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3006 return without waiting for the connection to complete; instead, the
3007 sentinel function will be called with second arg matching "open" (if
3008 successful) or "failed" when the connect completes. Default is to use
3009 a blocking connect (i.e. wait) for stream type connections.
3011 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3012 running when Emacs is exited.
3014 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3015 In the stopped state, a server process does not accept new
3016 connections, and a client process does not handle incoming traffic.
3017 The stopped state is cleared by `continue-process' and set by
3020 :filter FILTER -- Install FILTER as the process filter.
3022 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3023 process filter are multibyte, otherwise they are unibyte.
3024 If this keyword is not specified, the strings are multibyte if
3025 `default-enable-multibyte-characters' is non-nil.
3027 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3029 :log LOG -- Install LOG as the server process log function. This
3030 function is called when the server accepts a network connection from a
3031 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3032 is the server process, CLIENT is the new process for the connection,
3033 and MESSAGE is a string.
3035 :plist PLIST -- Install PLIST as the new process' initial plist.
3037 :server QLEN -- if QLEN is non-nil, create a server process for the
3038 specified FAMILY, SERVICE, and connection type (stream or datagram).
3039 If QLEN is an integer, it is used as the max. length of the server's
3040 pending connection queue (also known as the backlog); the default
3041 queue length is 5. Default is to create a client process.
3043 The following network options can be specified for this connection:
3045 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3046 :dontroute BOOL -- Only send to directly connected hosts.
3047 :keepalive BOOL -- Send keep-alive messages on network stream.
3048 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3049 :oobinline BOOL -- Place out-of-band data in receive data stream.
3050 :priority INT -- Set protocol defined priority for sent packets.
3051 :reuseaddr BOOL -- Allow reusing a recently used local address
3052 (this is allowed by default for a server process).
3053 :bindtodevice NAME -- bind to interface NAME. Using this may require
3054 special privileges on some systems.
3056 Consult the relevant system programmer's manual pages for more
3057 information on using these options.
3060 A server process will listen for and accept connections from clients.
3061 When a client connection is accepted, a new network process is created
3062 for the connection with the following parameters:
3064 - The client's process name is constructed by concatenating the server
3065 process' NAME and a client identification string.
3066 - If the FILTER argument is non-nil, the client process will not get a
3067 separate process buffer; otherwise, the client's process buffer is a newly
3068 created buffer named after the server process' BUFFER name or process
3069 NAME concatenated with the client identification string.
3070 - The connection type and the process filter and sentinel parameters are
3071 inherited from the server process' TYPE, FILTER and SENTINEL.
3072 - The client process' contact info is set according to the client's
3073 addressing information (typically an IP address and a port number).
3074 - The client process' plist is initialized from the server's plist.
3076 Notice that the FILTER and SENTINEL args are never used directly by
3077 the server process. Also, the BUFFER argument is not used directly by
3078 the server process, but via the optional :log function, accepted (and
3079 failed) connections may be logged in the server process' buffer.
3081 The original argument list, modified with the actual connection
3082 information, is available via the `process-contact' function.
3084 usage: (make-network-process &rest ARGS) */)
3085 (int nargs
, Lisp_Object
*args
)
3088 Lisp_Object contact
;
3089 struct Lisp_Process
*p
;
3090 #ifdef HAVE_GETADDRINFO
3091 struct addrinfo ai
, *res
, *lres
;
3092 struct addrinfo hints
;
3093 const char *portstring
;
3095 #else /* HAVE_GETADDRINFO */
3096 struct _emacs_addrinfo
3102 struct sockaddr
*ai_addr
;
3103 struct _emacs_addrinfo
*ai_next
;
3105 #endif /* HAVE_GETADDRINFO */
3106 struct sockaddr_in address_in
;
3107 #ifdef HAVE_LOCAL_SOCKETS
3108 struct sockaddr_un address_un
;
3113 int s
= -1, outch
, inch
;
3114 struct gcpro gcpro1
;
3115 int count
= SPECPDL_INDEX ();
3117 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3119 Lisp_Object name
, buffer
, host
, service
, address
;
3120 Lisp_Object filter
, sentinel
;
3121 int is_non_blocking_client
= 0;
3122 int is_server
= 0, backlog
= 5;
3129 /* Save arguments for process-contact and clone-process. */
3130 contact
= Flist (nargs
, args
);
3134 /* Ensure socket support is loaded if available. */
3135 init_winsock (TRUE
);
3138 /* :type TYPE (nil: stream, datagram */
3139 tem
= Fplist_get (contact
, QCtype
);
3141 socktype
= SOCK_STREAM
;
3142 #ifdef DATAGRAM_SOCKETS
3143 else if (EQ (tem
, Qdatagram
))
3144 socktype
= SOCK_DGRAM
;
3146 #ifdef HAVE_SEQPACKET
3147 else if (EQ (tem
, Qseqpacket
))
3148 socktype
= SOCK_SEQPACKET
;
3151 error ("Unsupported connection type");
3154 tem
= Fplist_get (contact
, QCserver
);
3157 /* Don't support network sockets when non-blocking mode is
3158 not available, since a blocked Emacs is not useful. */
3159 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3160 error ("Network servers not supported");
3164 backlog
= XINT (tem
);
3168 /* Make QCaddress an alias for :local (server) or :remote (client). */
3169 QCaddress
= is_server
? QClocal
: QCremote
;
3172 if (!is_server
&& socktype
!= SOCK_DGRAM
3173 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3175 #ifndef NON_BLOCKING_CONNECT
3176 error ("Non-blocking connect not supported");
3178 is_non_blocking_client
= 1;
3182 name
= Fplist_get (contact
, QCname
);
3183 buffer
= Fplist_get (contact
, QCbuffer
);
3184 filter
= Fplist_get (contact
, QCfilter
);
3185 sentinel
= Fplist_get (contact
, QCsentinel
);
3187 CHECK_STRING (name
);
3189 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3190 ai
.ai_socktype
= socktype
;
3195 /* :local ADDRESS or :remote ADDRESS */
3196 address
= Fplist_get (contact
, QCaddress
);
3197 if (!NILP (address
))
3199 host
= service
= Qnil
;
3201 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3202 error ("Malformed :address");
3203 ai
.ai_family
= family
;
3204 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3205 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3209 /* :family FAMILY -- nil (for Inet), local, or integer. */
3210 tem
= Fplist_get (contact
, QCfamily
);
3213 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3219 #ifdef HAVE_LOCAL_SOCKETS
3220 else if (EQ (tem
, Qlocal
))
3224 else if (EQ (tem
, Qipv6
))
3227 else if (EQ (tem
, Qipv4
))
3229 else if (INTEGERP (tem
))
3230 family
= XINT (tem
);
3232 error ("Unknown address family");
3234 ai
.ai_family
= family
;
3236 /* :service SERVICE -- string, integer (port number), or t (random port). */
3237 service
= Fplist_get (contact
, QCservice
);
3239 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3240 host
= Fplist_get (contact
, QChost
);
3243 if (EQ (host
, Qlocal
))
3244 /* Depending on setup, "localhost" may map to different IPv4 and/or
3245 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
3246 host
= build_string ("127.0.0.1");
3247 CHECK_STRING (host
);
3250 #ifdef HAVE_LOCAL_SOCKETS
3251 if (family
== AF_LOCAL
)
3255 message (":family local ignores the :host \"%s\" property",
3257 contact
= Fplist_put (contact
, QChost
, Qnil
);
3260 CHECK_STRING (service
);
3261 memset (&address_un
, 0, sizeof address_un
);
3262 address_un
.sun_family
= AF_LOCAL
;
3263 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3264 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3265 ai
.ai_addrlen
= sizeof address_un
;
3270 /* Slow down polling to every ten seconds.
3271 Some kernels have a bug which causes retrying connect to fail
3272 after a connect. Polling can interfere with gethostbyname too. */
3273 #ifdef POLL_FOR_INPUT
3274 if (socktype
!= SOCK_DGRAM
)
3276 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3277 bind_polling_period (10);
3281 #ifdef HAVE_GETADDRINFO
3282 /* If we have a host, use getaddrinfo to resolve both host and service.
3283 Otherwise, use getservbyname to lookup the service. */
3287 /* SERVICE can either be a string or int.
3288 Convert to a C string for later use by getaddrinfo. */
3289 if (EQ (service
, Qt
))
3291 else if (INTEGERP (service
))
3293 sprintf (portbuf
, "%ld", (long) XINT (service
));
3294 portstring
= portbuf
;
3298 CHECK_STRING (service
);
3299 portstring
= SDATA (service
);
3304 memset (&hints
, 0, sizeof (hints
));
3306 hints
.ai_family
= family
;
3307 hints
.ai_socktype
= socktype
;
3308 hints
.ai_protocol
= 0;
3310 #ifdef HAVE_RES_INIT
3314 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3316 #ifdef HAVE_GAI_STRERROR
3317 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror (ret
));
3319 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3325 #endif /* HAVE_GETADDRINFO */
3327 /* We end up here if getaddrinfo is not defined, or in case no hostname
3328 has been specified (e.g. for a local server process). */
3330 if (EQ (service
, Qt
))
3332 else if (INTEGERP (service
))
3333 port
= htons ((unsigned short) XINT (service
));
3336 struct servent
*svc_info
;
3337 CHECK_STRING (service
);
3338 svc_info
= getservbyname (SDATA (service
),
3339 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3341 error ("Unknown service: %s", SDATA (service
));
3342 port
= svc_info
->s_port
;
3345 memset (&address_in
, 0, sizeof address_in
);
3346 address_in
.sin_family
= family
;
3347 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3348 address_in
.sin_port
= port
;
3350 #ifndef HAVE_GETADDRINFO
3353 struct hostent
*host_info_ptr
;
3355 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3356 as it may `hang' Emacs for a very long time. */
3360 #ifdef HAVE_RES_INIT
3364 host_info_ptr
= gethostbyname (SDATA (host
));
3369 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3370 host_info_ptr
->h_length
);
3371 family
= host_info_ptr
->h_addrtype
;
3372 address_in
.sin_family
= family
;
3375 /* Attempt to interpret host as numeric inet address */
3377 unsigned long numeric_addr
;
3378 numeric_addr
= inet_addr (SSDATA (host
));
3379 if (numeric_addr
== -1)
3380 error ("Unknown host \"%s\"", SDATA (host
));
3382 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3383 sizeof (address_in
.sin_addr
));
3387 #endif /* not HAVE_GETADDRINFO */
3389 ai
.ai_family
= family
;
3390 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3391 ai
.ai_addrlen
= sizeof address_in
;
3395 /* Do this in case we never enter the for-loop below. */
3396 count1
= SPECPDL_INDEX ();
3399 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3405 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3412 #ifdef DATAGRAM_SOCKETS
3413 if (!is_server
&& socktype
== SOCK_DGRAM
)
3415 #endif /* DATAGRAM_SOCKETS */
3417 #ifdef NON_BLOCKING_CONNECT
3418 if (is_non_blocking_client
)
3421 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3423 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3435 /* Make us close S if quit. */
3436 record_unwind_protect (close_file_unwind
, make_number (s
));
3438 /* Parse network options in the arg list.
3439 We simply ignore anything which isn't a known option (including other keywords).
3440 An error is signaled if setting a known option fails. */
3441 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3442 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3446 /* Configure as a server socket. */
3448 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3449 explicit :reuseaddr key to override this. */
3450 #ifdef HAVE_LOCAL_SOCKETS
3451 if (family
!= AF_LOCAL
)
3453 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3456 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3457 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3460 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3461 report_file_error ("Cannot bind server socket", Qnil
);
3463 #ifdef HAVE_GETSOCKNAME
3464 if (EQ (service
, Qt
))
3466 struct sockaddr_in sa1
;
3467 int len1
= sizeof (sa1
);
3468 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3470 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3471 service
= make_number (ntohs (sa1
.sin_port
));
3472 contact
= Fplist_put (contact
, QCservice
, service
);
3477 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3478 report_file_error ("Cannot listen on server socket", Qnil
);
3486 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3489 if (ret
== 0 || xerrno
== EISCONN
)
3491 /* The unwind-protect will be discarded afterwards.
3492 Likewise for immediate_quit. */
3496 #ifdef NON_BLOCKING_CONNECT
3498 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3502 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3509 if (xerrno
== EINTR
)
3511 /* Unlike most other syscalls connect() cannot be called
3512 again. (That would return EALREADY.) The proper way to
3513 wait for completion is select(). */
3520 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3527 report_file_error ("select failed", Qnil
);
3531 len
= sizeof xerrno
;
3532 eassert (FD_ISSET (s
, &fdset
));
3533 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3534 report_file_error ("getsockopt failed", Qnil
);
3536 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3540 #endif /* !WINDOWSNT */
3544 /* Discard the unwind protect closing S. */
3545 specpdl_ptr
= specpdl
+ count1
;
3550 if (xerrno
== EINTR
)
3557 #ifdef DATAGRAM_SOCKETS
3558 if (socktype
== SOCK_DGRAM
)
3560 if (datagram_address
[s
].sa
)
3562 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3563 datagram_address
[s
].len
= lres
->ai_addrlen
;
3567 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3568 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3571 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3572 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3573 conv_lisp_to_sockaddr (rfamily
, remote
,
3574 datagram_address
[s
].sa
, rlen
);
3578 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3581 contact
= Fplist_put (contact
, QCaddress
,
3582 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3583 #ifdef HAVE_GETSOCKNAME
3586 struct sockaddr_in sa1
;
3587 int len1
= sizeof (sa1
);
3588 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3589 contact
= Fplist_put (contact
, QClocal
,
3590 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3597 #ifdef HAVE_GETADDRINFO
3606 /* Discard the unwind protect for closing S, if any. */
3607 specpdl_ptr
= specpdl
+ count1
;
3609 /* Unwind bind_polling_period and request_sigio. */
3610 unbind_to (count
, Qnil
);
3614 /* If non-blocking got this far - and failed - assume non-blocking is
3615 not supported after all. This is probably a wrong assumption, but
3616 the normal blocking calls to open-network-stream handles this error
3618 if (is_non_blocking_client
)
3623 report_file_error ("make server process failed", contact
);
3625 report_file_error ("make client process failed", contact
);
3632 buffer
= Fget_buffer_create (buffer
);
3633 proc
= make_process (name
);
3635 chan_process
[inch
] = proc
;
3638 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3641 fcntl (inch
, F_SETFL
, O_NDELAY
);
3645 p
= XPROCESS (proc
);
3647 p
->childp
= contact
;
3648 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3652 p
->sentinel
= sentinel
;
3654 p
->log
= Fplist_get (contact
, QClog
);
3655 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3656 p
->kill_without_query
= 1;
3657 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3662 if (is_server
&& socktype
!= SOCK_DGRAM
)
3663 p
->status
= Qlisten
;
3665 /* Make the process marker point into the process buffer (if any). */
3666 if (BUFFERP (buffer
))
3667 set_marker_both (p
->mark
, buffer
,
3668 BUF_ZV (XBUFFER (buffer
)),
3669 BUF_ZV_BYTE (XBUFFER (buffer
)));
3671 #ifdef NON_BLOCKING_CONNECT
3672 if (is_non_blocking_client
)
3674 /* We may get here if connect did succeed immediately. However,
3675 in that case, we still need to signal this like a non-blocking
3677 p
->status
= Qconnect
;
3678 if (!FD_ISSET (inch
, &connect_wait_mask
))
3680 FD_SET (inch
, &connect_wait_mask
);
3681 FD_SET (inch
, &write_mask
);
3682 num_pending_connects
++;
3687 /* A server may have a client filter setting of Qt, but it must
3688 still listen for incoming connects unless it is stopped. */
3689 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3690 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3692 FD_SET (inch
, &input_wait_mask
);
3693 FD_SET (inch
, &non_keyboard_wait_mask
);
3696 if (inch
> max_process_desc
)
3697 max_process_desc
= inch
;
3699 tem
= Fplist_member (contact
, QCcoding
);
3700 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3701 tem
= Qnil
; /* No error message (too late!). */
3704 /* Setup coding systems for communicating with the network stream. */
3705 struct gcpro gcpro1
;
3706 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3707 Lisp_Object coding_systems
= Qt
;
3708 Lisp_Object args
[5], val
;
3712 val
= XCAR (XCDR (tem
));
3716 else if (!NILP (Vcoding_system_for_read
))
3717 val
= Vcoding_system_for_read
;
3718 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3719 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3720 /* We dare not decode end-of-line format by setting VAL to
3721 Qraw_text, because the existing Emacs Lisp libraries
3722 assume that they receive bare code including a sequene of
3727 if (NILP (host
) || NILP (service
))
3728 coding_systems
= Qnil
;
3731 args
[0] = Qopen_network_stream
, args
[1] = name
,
3732 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3734 coding_systems
= Ffind_operation_coding_system (5, args
);
3737 if (CONSP (coding_systems
))
3738 val
= XCAR (coding_systems
);
3739 else if (CONSP (Vdefault_process_coding_system
))
3740 val
= XCAR (Vdefault_process_coding_system
);
3744 p
->decode_coding_system
= val
;
3748 val
= XCAR (XCDR (tem
));
3752 else if (!NILP (Vcoding_system_for_write
))
3753 val
= Vcoding_system_for_write
;
3754 else if (NILP (current_buffer
->enable_multibyte_characters
))
3758 if (EQ (coding_systems
, Qt
))
3760 if (NILP (host
) || NILP (service
))
3761 coding_systems
= Qnil
;
3764 args
[0] = Qopen_network_stream
, args
[1] = name
,
3765 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3767 coding_systems
= Ffind_operation_coding_system (5, args
);
3771 if (CONSP (coding_systems
))
3772 val
= XCDR (coding_systems
);
3773 else if (CONSP (Vdefault_process_coding_system
))
3774 val
= XCDR (Vdefault_process_coding_system
);
3778 p
->encode_coding_system
= val
;
3780 setup_process_coding_systems (proc
);
3782 p
->decoding_buf
= make_uninit_string (0);
3783 p
->decoding_carryover
= 0;
3784 p
->encoding_buf
= make_uninit_string (0);
3786 p
->inherit_coding_system_flag
3787 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3794 #if defined(HAVE_NET_IF_H)
3797 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3798 doc
: /* Return an alist of all network interfaces and their network address.
3799 Each element is a cons, the car of which is a string containing the
3800 interface name, and the cdr is the network address in internal
3801 format; see the description of ADDRESS in `make-network-process'. */)
3804 struct ifconf ifconf
;
3805 struct ifreq
*ifreqs
= NULL
;
3810 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3816 buf_size
= ifaces
* sizeof (ifreqs
[0]);
3817 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3824 ifconf
.ifc_len
= buf_size
;
3825 ifconf
.ifc_req
= ifreqs
;
3826 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3832 if (ifconf
.ifc_len
== buf_size
)
3836 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3839 while (--ifaces
>= 0)
3841 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3842 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3843 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3845 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3846 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3847 res
= Fcons (Fcons (build_string (namebuf
),
3848 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3849 sizeof (struct sockaddr
))),
3855 #endif /* SIOCGIFCONF */
3857 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3861 const char *flag_sym
;
3864 static const struct ifflag_def ifflag_table
[] = {
3868 #ifdef IFF_BROADCAST
3869 { IFF_BROADCAST
, "broadcast" },
3872 { IFF_DEBUG
, "debug" },
3875 { IFF_LOOPBACK
, "loopback" },
3877 #ifdef IFF_POINTOPOINT
3878 { IFF_POINTOPOINT
, "pointopoint" },
3881 { IFF_RUNNING
, "running" },
3884 { IFF_NOARP
, "noarp" },
3887 { IFF_PROMISC
, "promisc" },
3889 #ifdef IFF_NOTRAILERS
3890 { IFF_NOTRAILERS
, "notrailers" },
3893 { IFF_ALLMULTI
, "allmulti" },
3896 { IFF_MASTER
, "master" },
3899 { IFF_SLAVE
, "slave" },
3901 #ifdef IFF_MULTICAST
3902 { IFF_MULTICAST
, "multicast" },
3905 { IFF_PORTSEL
, "portsel" },
3907 #ifdef IFF_AUTOMEDIA
3908 { IFF_AUTOMEDIA
, "automedia" },
3911 { IFF_DYNAMIC
, "dynamic" },
3914 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3917 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3920 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3923 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3926 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3931 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3932 doc
: /* Return information about network interface named IFNAME.
3933 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3934 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3935 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3936 FLAGS is the current flags of the interface. */)
3937 (Lisp_Object ifname
)
3940 Lisp_Object res
= Qnil
;
3945 CHECK_STRING (ifname
);
3947 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3948 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3950 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3955 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3956 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3958 int flags
= rq
.ifr_flags
;
3959 const struct ifflag_def
*fp
;
3963 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3965 if (flags
& fp
->flag_bit
)
3967 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3968 flags
-= fp
->flag_bit
;
3971 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3973 if (flags
& (1 << fnum
))
3975 elt
= Fcons (make_number (fnum
), elt
);
3980 res
= Fcons (elt
, res
);
3983 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3984 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3986 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3987 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3991 for (n
= 0; n
< 6; n
++)
3992 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3993 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3996 res
= Fcons (elt
, res
);
3999 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4000 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4003 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4004 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4006 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4010 res
= Fcons (elt
, res
);
4013 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4014 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4017 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4020 res
= Fcons (elt
, res
);
4023 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4024 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4027 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4030 res
= Fcons (elt
, res
);
4034 return any
? res
: Qnil
;
4037 #endif /* defined(HAVE_NET_IF_H) */
4039 /* Turn off input and output for process PROC. */
4042 deactivate_process (Lisp_Object proc
)
4044 register int inchannel
, outchannel
;
4045 register struct Lisp_Process
*p
= XPROCESS (proc
);
4047 inchannel
= p
->infd
;
4048 outchannel
= p
->outfd
;
4050 #ifdef ADAPTIVE_READ_BUFFERING
4051 if (p
->read_output_delay
> 0)
4053 if (--process_output_delay_count
< 0)
4054 process_output_delay_count
= 0;
4055 p
->read_output_delay
= 0;
4056 p
->read_output_skip
= 0;
4062 /* Beware SIGCHLD hereabouts. */
4063 flush_pending_output (inchannel
);
4064 emacs_close (inchannel
);
4065 if (outchannel
>= 0 && outchannel
!= inchannel
)
4066 emacs_close (outchannel
);
4070 #ifdef DATAGRAM_SOCKETS
4071 if (DATAGRAM_CHAN_P (inchannel
))
4073 xfree (datagram_address
[inchannel
].sa
);
4074 datagram_address
[inchannel
].sa
= 0;
4075 datagram_address
[inchannel
].len
= 0;
4078 chan_process
[inchannel
] = Qnil
;
4079 FD_CLR (inchannel
, &input_wait_mask
);
4080 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4081 #ifdef NON_BLOCKING_CONNECT
4082 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4084 FD_CLR (inchannel
, &connect_wait_mask
);
4085 FD_CLR (inchannel
, &write_mask
);
4086 if (--num_pending_connects
< 0)
4090 if (inchannel
== max_process_desc
)
4093 /* We just closed the highest-numbered process input descriptor,
4094 so recompute the highest-numbered one now. */
4095 max_process_desc
= 0;
4096 for (i
= 0; i
< MAXDESC
; i
++)
4097 if (!NILP (chan_process
[i
]))
4098 max_process_desc
= i
;
4104 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4106 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4107 It is read into the process' buffers or given to their filter functions.
4108 Non-nil arg PROCESS means do not return until some output has been received
4111 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4112 and milliseconds to wait; return after that much time whether or not
4113 there is any subprocess output. If SECONDS is a floating point number,
4114 it specifies a fractional number of seconds to wait.
4115 The MILLISEC argument is obsolete and should be avoided.
4117 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4118 from PROCESS, suspending reading output from other processes.
4119 If JUST-THIS-ONE is an integer, don't run any timers either.
4120 Return non-nil if we received any output before the timeout expired. */)
4121 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4123 int secs
, usecs
= 0;
4125 if (! NILP (process
))
4126 CHECK_PROCESS (process
);
4128 just_this_one
= Qnil
;
4130 if (!NILP (millisec
))
4131 { /* Obsolete calling convention using integers rather than floats. */
4132 CHECK_NUMBER (millisec
);
4134 seconds
= make_float (XINT (millisec
) / 1000.0);
4137 CHECK_NUMBER (seconds
);
4138 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4142 if (!NILP (seconds
))
4144 if (INTEGERP (seconds
))
4145 secs
= XINT (seconds
);
4146 else if (FLOATP (seconds
))
4148 double timeout
= XFLOAT_DATA (seconds
);
4149 secs
= (int) timeout
;
4150 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4153 wrong_type_argument (Qnumberp
, seconds
);
4155 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4156 secs
= -1, usecs
= 0;
4159 secs
= NILP (process
) ? -1 : 0;
4162 (wait_reading_process_output (secs
, usecs
, 0, 0,
4164 !NILP (process
) ? XPROCESS (process
) : NULL
,
4165 NILP (just_this_one
) ? 0 :
4166 !INTEGERP (just_this_one
) ? 1 : -1)
4170 /* Accept a connection for server process SERVER on CHANNEL. */
4172 static int connect_counter
= 0;
4175 server_accept_connection (Lisp_Object server
, int channel
)
4177 Lisp_Object proc
, caller
, name
, buffer
;
4178 Lisp_Object contact
, host
, service
;
4179 struct Lisp_Process
*ps
= XPROCESS (server
);
4180 struct Lisp_Process
*p
;
4184 struct sockaddr_in in
;
4186 struct sockaddr_in6 in6
;
4188 #ifdef HAVE_LOCAL_SOCKETS
4189 struct sockaddr_un un
;
4192 int len
= sizeof saddr
;
4194 s
= accept (channel
, &saddr
.sa
, &len
);
4203 if (code
== EWOULDBLOCK
)
4207 if (!NILP (ps
->log
))
4208 call3 (ps
->log
, server
, Qnil
,
4209 concat3 (build_string ("accept failed with code"),
4210 Fnumber_to_string (make_number (code
)),
4211 build_string ("\n")));
4217 /* Setup a new process to handle the connection. */
4219 /* Generate a unique identification of the caller, and build contact
4220 information for this process. */
4223 switch (saddr
.sa
.sa_family
)
4227 Lisp_Object args
[5];
4228 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4229 args
[0] = build_string ("%d.%d.%d.%d");
4230 args
[1] = make_number (*ip
++);
4231 args
[2] = make_number (*ip
++);
4232 args
[3] = make_number (*ip
++);
4233 args
[4] = make_number (*ip
++);
4234 host
= Fformat (5, args
);
4235 service
= make_number (ntohs (saddr
.in
.sin_port
));
4237 args
[0] = build_string (" <%s:%d>");
4240 caller
= Fformat (3, args
);
4247 Lisp_Object args
[9];
4248 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4250 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4251 for (i
= 0; i
< 8; i
++)
4252 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4253 host
= Fformat (9, args
);
4254 service
= make_number (ntohs (saddr
.in
.sin_port
));
4256 args
[0] = build_string (" <[%s]:%d>");
4259 caller
= Fformat (3, args
);
4264 #ifdef HAVE_LOCAL_SOCKETS
4268 caller
= Fnumber_to_string (make_number (connect_counter
));
4269 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4273 /* Create a new buffer name for this process if it doesn't have a
4274 filter. The new buffer name is based on the buffer name or
4275 process name of the server process concatenated with the caller
4278 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4282 buffer
= ps
->buffer
;
4284 buffer
= Fbuffer_name (buffer
);
4289 buffer
= concat2 (buffer
, caller
);
4290 buffer
= Fget_buffer_create (buffer
);
4294 /* Generate a unique name for the new server process. Combine the
4295 server process name with the caller identification. */
4297 name
= concat2 (ps
->name
, caller
);
4298 proc
= make_process (name
);
4300 chan_process
[s
] = proc
;
4303 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4306 fcntl (s
, F_SETFL
, O_NDELAY
);
4310 p
= XPROCESS (proc
);
4312 /* Build new contact information for this setup. */
4313 contact
= Fcopy_sequence (ps
->childp
);
4314 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4315 contact
= Fplist_put (contact
, QChost
, host
);
4316 if (!NILP (service
))
4317 contact
= Fplist_put (contact
, QCservice
, service
);
4318 contact
= Fplist_put (contact
, QCremote
,
4319 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4320 #ifdef HAVE_GETSOCKNAME
4322 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4323 contact
= Fplist_put (contact
, QClocal
,
4324 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4327 p
->childp
= contact
;
4328 p
->plist
= Fcopy_sequence (ps
->plist
);
4332 p
->sentinel
= ps
->sentinel
;
4333 p
->filter
= ps
->filter
;
4340 /* Client processes for accepted connections are not stopped initially. */
4341 if (!EQ (p
->filter
, Qt
))
4343 FD_SET (s
, &input_wait_mask
);
4344 FD_SET (s
, &non_keyboard_wait_mask
);
4347 if (s
> max_process_desc
)
4348 max_process_desc
= s
;
4350 /* Setup coding system for new process based on server process.
4351 This seems to be the proper thing to do, as the coding system
4352 of the new process should reflect the settings at the time the
4353 server socket was opened; not the current settings. */
4355 p
->decode_coding_system
= ps
->decode_coding_system
;
4356 p
->encode_coding_system
= ps
->encode_coding_system
;
4357 setup_process_coding_systems (proc
);
4359 p
->decoding_buf
= make_uninit_string (0);
4360 p
->decoding_carryover
= 0;
4361 p
->encoding_buf
= make_uninit_string (0);
4363 p
->inherit_coding_system_flag
4364 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4366 if (!NILP (ps
->log
))
4367 call3 (ps
->log
, server
, proc
,
4368 concat3 (build_string ("accept from "),
4369 (STRINGP (host
) ? host
: build_string ("-")),
4370 build_string ("\n")));
4372 if (!NILP (p
->sentinel
))
4373 exec_sentinel (proc
,
4374 concat3 (build_string ("open from "),
4375 (STRINGP (host
) ? host
: build_string ("-")),
4376 build_string ("\n")));
4379 /* This variable is different from waiting_for_input in keyboard.c.
4380 It is used to communicate to a lisp process-filter/sentinel (via the
4381 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4382 for user-input when that process-filter was called.
4383 waiting_for_input cannot be used as that is by definition 0 when
4384 lisp code is being evalled.
4385 This is also used in record_asynch_buffer_change.
4386 For that purpose, this must be 0
4387 when not inside wait_reading_process_output. */
4388 static int waiting_for_user_input_p
;
4391 wait_reading_process_output_unwind (Lisp_Object data
)
4393 waiting_for_user_input_p
= XINT (data
);
4397 /* This is here so breakpoints can be put on it. */
4399 wait_reading_process_output_1 (void)
4403 /* Use a wrapper around select to work around a bug in gdb 5.3.
4404 Normally, the wrapper is optimized away by inlining.
4406 If emacs is stopped inside select, the gdb backtrace doesn't
4407 show the function which called select, so it is practically
4408 impossible to step through wait_reading_process_output. */
4412 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4414 return select (n
, rfd
, wfd
, xfd
, tmo
);
4416 #define select select_wrapper
4419 /* Read and dispose of subprocess output while waiting for timeout to
4420 elapse and/or keyboard input to be available.
4423 timeout in seconds, or
4424 zero for no limit, or
4425 -1 means gobble data immediately available but don't wait for any.
4428 an additional duration to wait, measured in microseconds.
4429 If this is nonzero and time_limit is 0, then the timeout
4430 consists of MICROSECS only.
4432 READ_KBD is a lisp value:
4433 0 to ignore keyboard input, or
4434 1 to return when input is available, or
4435 -1 meaning caller will actually read the input, so don't throw to
4436 the quit handler, or
4438 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4439 output that arrives.
4441 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4442 (and gobble terminal input into the buffer if any arrives).
4444 If WAIT_PROC is specified, wait until something arrives from that
4445 process. The return value is true if we read some input from
4448 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4449 (suspending output from other processes). A negative value
4450 means don't run any timers either.
4452 If WAIT_PROC is specified, then the function returns true if we
4453 received input from that process before the timeout elapsed.
4454 Otherwise, return true if we received input from any process. */
4457 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4459 Lisp_Object wait_for_cell
,
4460 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4462 register int channel
, nfds
;
4463 SELECT_TYPE Available
;
4464 SELECT_TYPE Writeok
;
4466 int check_delay
, no_avail
;
4469 EMACS_TIME timeout
, end_time
;
4470 int wait_channel
= -1;
4471 int got_some_input
= 0;
4472 int count
= SPECPDL_INDEX ();
4474 FD_ZERO (&Available
);
4477 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4478 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4479 message ("Blocking call to accept-process-output with quit inhibited!!");
4481 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4482 if (wait_proc
!= NULL
)
4483 wait_channel
= wait_proc
->infd
;
4485 record_unwind_protect (wait_reading_process_output_unwind
,
4486 make_number (waiting_for_user_input_p
));
4487 waiting_for_user_input_p
= read_kbd
;
4489 /* Since we may need to wait several times,
4490 compute the absolute time to return at. */
4491 if (time_limit
|| microsecs
)
4493 EMACS_GET_TIME (end_time
);
4494 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4495 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4500 int timeout_reduced_for_timers
= 0;
4502 /* If calling from keyboard input, do not quit
4503 since we want to return C-g as an input character.
4504 Otherwise, do pending quit if requested. */
4509 process_pending_signals ();
4512 /* Exit now if the cell we're waiting for became non-nil. */
4513 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4516 /* Compute time from now till when time limit is up */
4517 /* Exit if already run out */
4518 if (time_limit
== -1)
4520 /* -1 specified for timeout means
4521 gobble output available now
4522 but don't wait at all. */
4524 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4526 else if (time_limit
|| microsecs
)
4528 EMACS_GET_TIME (timeout
);
4529 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4530 if (EMACS_TIME_NEG_P (timeout
))
4535 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4538 /* Normally we run timers here.
4539 But not if wait_for_cell; in those cases,
4540 the wait is supposed to be short,
4541 and those callers cannot handle running arbitrary Lisp code here. */
4542 if (NILP (wait_for_cell
)
4543 && just_wait_proc
>= 0)
4545 EMACS_TIME timer_delay
;
4549 int old_timers_run
= timers_run
;
4550 struct buffer
*old_buffer
= current_buffer
;
4551 Lisp_Object old_window
= selected_window
;
4553 timer_delay
= timer_check (1);
4555 /* If a timer has run, this might have changed buffers
4556 an alike. Make read_key_sequence aware of that. */
4557 if (timers_run
!= old_timers_run
4558 && (old_buffer
!= current_buffer
4559 || !EQ (old_window
, selected_window
))
4560 && waiting_for_user_input_p
== -1)
4561 record_asynch_buffer_change ();
4563 if (timers_run
!= old_timers_run
&& do_display
)
4564 /* We must retry, since a timer may have requeued itself
4565 and that could alter the time_delay. */
4566 redisplay_preserve_echo_area (9);
4570 while (!detect_input_pending ());
4572 /* If there is unread keyboard input, also return. */
4574 && requeued_events_pending_p ())
4577 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4579 EMACS_TIME difference
;
4580 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4581 if (EMACS_TIME_NEG_P (difference
))
4583 timeout
= timer_delay
;
4584 timeout_reduced_for_timers
= 1;
4587 /* If time_limit is -1, we are not going to wait at all. */
4588 else if (time_limit
!= -1)
4590 /* This is so a breakpoint can be put here. */
4591 wait_reading_process_output_1 ();
4595 /* Cause C-g and alarm signals to take immediate action,
4596 and cause input available signals to zero out timeout.
4598 It is important that we do this before checking for process
4599 activity. If we get a SIGCHLD after the explicit checks for
4600 process activity, timeout is the only way we will know. */
4602 set_waiting_for_input (&timeout
);
4604 /* If status of something has changed, and no input is
4605 available, notify the user of the change right away. After
4606 this explicit check, we'll let the SIGCHLD handler zap
4607 timeout to get our attention. */
4608 if (update_tick
!= process_tick
)
4613 if (kbd_on_hold_p ())
4616 Atemp
= input_wait_mask
;
4619 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4620 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4622 #ifdef NON_BLOCKING_CONNECT
4623 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4627 (SELECT_TYPE
*)0, &timeout
)
4630 /* It's okay for us to do this and then continue with
4631 the loop, since timeout has already been zeroed out. */
4632 clear_waiting_for_input ();
4633 status_notify (NULL
);
4634 if (do_display
) redisplay_preserve_echo_area (13);
4638 /* Don't wait for output from a non-running process. Just
4639 read whatever data has already been received. */
4640 if (wait_proc
&& wait_proc
->raw_status_new
)
4641 update_status (wait_proc
);
4643 && ! EQ (wait_proc
->status
, Qrun
)
4644 && ! EQ (wait_proc
->status
, Qconnect
))
4646 int nread
, total_nread
= 0;
4648 clear_waiting_for_input ();
4649 XSETPROCESS (proc
, wait_proc
);
4651 /* Read data from the process, until we exhaust it. */
4652 while (wait_proc
->infd
>= 0)
4654 nread
= read_process_output (proc
, wait_proc
->infd
);
4661 total_nread
+= nread
;
4665 else if (nread
== -1 && EIO
== errno
)
4669 else if (nread
== -1 && EAGAIN
== errno
)
4673 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4677 if (total_nread
> 0 && do_display
)
4678 redisplay_preserve_echo_area (10);
4683 /* Wait till there is something to do */
4685 if (wait_proc
&& just_wait_proc
)
4687 if (wait_proc
->infd
< 0) /* Terminated */
4689 FD_SET (wait_proc
->infd
, &Available
);
4693 else if (!NILP (wait_for_cell
))
4695 Available
= non_process_wait_mask
;
4702 Available
= non_keyboard_wait_mask
;
4704 Available
= input_wait_mask
;
4705 Writeok
= write_mask
;
4706 #ifdef SELECT_CANT_DO_WRITE_MASK
4711 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4714 /* If frame size has changed or the window is newly mapped,
4715 redisplay now, before we start to wait. There is a race
4716 condition here; if a SIGIO arrives between now and the select
4717 and indicates that a frame is trashed, the select may block
4718 displaying a trashed screen. */
4719 if (frame_garbaged
&& do_display
)
4721 clear_waiting_for_input ();
4722 redisplay_preserve_echo_area (11);
4724 set_waiting_for_input (&timeout
);
4728 if (read_kbd
&& detect_input_pending ())
4736 #ifdef ADAPTIVE_READ_BUFFERING
4737 /* Set the timeout for adaptive read buffering if any
4738 process has non-zero read_output_skip and non-zero
4739 read_output_delay, and we are not reading output for a
4740 specific wait_channel. It is not executed if
4741 Vprocess_adaptive_read_buffering is nil. */
4742 if (process_output_skip
&& check_delay
> 0)
4744 int usecs
= EMACS_USECS (timeout
);
4745 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4746 usecs
= READ_OUTPUT_DELAY_MAX
;
4747 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4749 proc
= chan_process
[channel
];
4752 /* Find minimum non-zero read_output_delay among the
4753 processes with non-zero read_output_skip. */
4754 if (XPROCESS (proc
)->read_output_delay
> 0)
4757 if (!XPROCESS (proc
)->read_output_skip
)
4759 FD_CLR (channel
, &Available
);
4760 XPROCESS (proc
)->read_output_skip
= 0;
4761 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4762 usecs
= XPROCESS (proc
)->read_output_delay
;
4765 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4766 process_output_skip
= 0;
4769 #if defined (USE_GTK) || defined (HAVE_GCONF)
4771 #elif defined (HAVE_NS)
4776 (max (max_process_desc
, max_input_desc
) + 1,
4778 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4779 (SELECT_TYPE
*)0, &timeout
);
4784 /* Make C-g and alarm signals set flags again */
4785 clear_waiting_for_input ();
4787 /* If we woke up due to SIGWINCH, actually change size now. */
4788 do_pending_window_change (0);
4790 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4791 /* We wanted the full specified time, so return now. */
4795 if (xerrno
== EINTR
)
4797 else if (xerrno
== EBADF
)
4800 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4801 the child's closure of the pts gives the parent a SIGHUP, and
4802 the ptc file descriptor is automatically closed,
4803 yielding EBADF here or at select() call above.
4804 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4805 in m/ibmrt-aix.h), and here we just ignore the select error.
4806 Cleanup occurs c/o status_notify after SIGCLD. */
4807 no_avail
= 1; /* Cannot depend on values returned */
4813 error ("select error: %s", emacs_strerror (xerrno
));
4818 FD_ZERO (&Available
);
4822 #if 0 /* When polling is used, interrupt_input is 0,
4823 so get_input_pending should read the input.
4824 So this should not be needed. */
4825 /* If we are using polling for input,
4826 and we see input available, make it get read now.
4827 Otherwise it might not actually get read for a second.
4828 And on hpux, since we turn off polling in wait_reading_process_output,
4829 it might never get read at all if we don't spend much time
4830 outside of wait_reading_process_output. */
4831 if (read_kbd
&& interrupt_input
4832 && keyboard_bit_set (&Available
)
4833 && input_polling_used ())
4834 kill (getpid (), SIGALRM
);
4837 /* Check for keyboard input */
4838 /* If there is any, return immediately
4839 to give it higher priority than subprocesses */
4843 int old_timers_run
= timers_run
;
4844 struct buffer
*old_buffer
= current_buffer
;
4845 Lisp_Object old_window
= selected_window
;
4848 if (detect_input_pending_run_timers (do_display
))
4850 swallow_events (do_display
);
4851 if (detect_input_pending_run_timers (do_display
))
4855 /* If a timer has run, this might have changed buffers
4856 an alike. Make read_key_sequence aware of that. */
4857 if (timers_run
!= old_timers_run
4858 && waiting_for_user_input_p
== -1
4859 && (old_buffer
!= current_buffer
4860 || !EQ (old_window
, selected_window
)))
4861 record_asynch_buffer_change ();
4867 /* If there is unread keyboard input, also return. */
4869 && requeued_events_pending_p ())
4872 /* If we are not checking for keyboard input now,
4873 do process events (but don't run any timers).
4874 This is so that X events will be processed.
4875 Otherwise they may have to wait until polling takes place.
4876 That would causes delays in pasting selections, for example.
4878 (We used to do this only if wait_for_cell.) */
4879 if (read_kbd
== 0 && detect_input_pending ())
4881 swallow_events (do_display
);
4882 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4883 if (detect_input_pending ())
4888 /* Exit now if the cell we're waiting for became non-nil. */
4889 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4893 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4894 go read it. This can happen with X on BSD after logging out.
4895 In that case, there really is no input and no SIGIO,
4896 but select says there is input. */
4898 if (read_kbd
&& interrupt_input
4899 && keyboard_bit_set (&Available
) && ! noninteractive
)
4900 kill (getpid (), SIGIO
);
4904 got_some_input
|= nfds
> 0;
4906 /* If checking input just got us a size-change event from X,
4907 obey it now if we should. */
4908 if (read_kbd
|| ! NILP (wait_for_cell
))
4909 do_pending_window_change (0);
4911 /* Check for data from a process. */
4912 if (no_avail
|| nfds
== 0)
4915 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4917 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4918 if (FD_ISSET (channel
, &Available
)
4920 && (d
->condition
& FOR_READ
) != 0)
4921 d
->func (channel
, d
->data
, 1);
4922 if (FD_ISSET (channel
, &write_mask
)
4924 && (d
->condition
& FOR_WRITE
) != 0)
4925 d
->func (channel
, d
->data
, 0);
4928 /* Really FIRST_PROC_DESC should be 0 on Unix,
4929 but this is safer in the short run. */
4930 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4932 if (FD_ISSET (channel
, &Available
)
4933 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4934 && !FD_ISSET (channel
, &non_process_wait_mask
))
4938 /* If waiting for this channel, arrange to return as
4939 soon as no more input to be processed. No more
4941 if (wait_channel
== channel
)
4947 proc
= chan_process
[channel
];
4951 /* If this is a server stream socket, accept connection. */
4952 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4954 server_accept_connection (proc
, channel
);
4958 /* Read data from the process, starting with our
4959 buffered-ahead character if we have one. */
4961 nread
= read_process_output (proc
, channel
);
4964 /* Since read_process_output can run a filter,
4965 which can call accept-process-output,
4966 don't try to read from any other processes
4967 before doing the select again. */
4968 FD_ZERO (&Available
);
4971 redisplay_preserve_echo_area (12);
4974 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4977 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4978 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4980 else if (nread
== -1 && errno
== EAGAIN
)
4984 else if (nread
== -1 && errno
== EAGAIN
)
4986 /* Note that we cannot distinguish between no input
4987 available now and a closed pipe.
4988 With luck, a closed pipe will be accompanied by
4989 subprocess termination and SIGCHLD. */
4990 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4992 #endif /* O_NDELAY */
4993 #endif /* O_NONBLOCK */
4995 /* On some OSs with ptys, when the process on one end of
4996 a pty exits, the other end gets an error reading with
4997 errno = EIO instead of getting an EOF (0 bytes read).
4998 Therefore, if we get an error reading and errno =
4999 EIO, just continue, because the child process has
5000 exited and should clean itself up soon (e.g. when we
5003 However, it has been known to happen that the SIGCHLD
5004 got lost. So raise the signal again just in case.
5006 else if (nread
== -1 && errno
== EIO
)
5008 /* Clear the descriptor now, so we only raise the
5009 signal once. Don't do this if `process' is only
5011 if (XPROCESS (proc
)->pid
!= -2)
5013 FD_CLR (channel
, &input_wait_mask
);
5014 FD_CLR (channel
, &non_keyboard_wait_mask
);
5016 kill (getpid (), SIGCHLD
);
5019 #endif /* HAVE_PTYS */
5020 /* If we can detect process termination, don't consider the process
5021 gone just because its pipe is closed. */
5023 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5028 /* Preserve status of processes already terminated. */
5029 XPROCESS (proc
)->tick
= ++process_tick
;
5030 deactivate_process (proc
);
5031 if (XPROCESS (proc
)->raw_status_new
)
5032 update_status (XPROCESS (proc
));
5033 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5034 XPROCESS (proc
)->status
5035 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5038 #ifdef NON_BLOCKING_CONNECT
5039 if (FD_ISSET (channel
, &Writeok
)
5040 && FD_ISSET (channel
, &connect_wait_mask
))
5042 struct Lisp_Process
*p
;
5044 FD_CLR (channel
, &connect_wait_mask
);
5045 FD_CLR (channel
, &write_mask
);
5046 if (--num_pending_connects
< 0)
5049 proc
= chan_process
[channel
];
5053 p
= XPROCESS (proc
);
5056 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5057 So only use it on systems where it is known to work. */
5059 int xlen
= sizeof (xerrno
);
5060 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5065 struct sockaddr pname
;
5066 int pnamelen
= sizeof (pname
);
5068 /* If connection failed, getpeername will fail. */
5070 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5072 /* Obtain connect failure code through error slippage. */
5075 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5082 p
->tick
= ++process_tick
;
5083 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5084 deactivate_process (proc
);
5089 /* Execute the sentinel here. If we had relied on
5090 status_notify to do it later, it will read input
5091 from the process before calling the sentinel. */
5092 exec_sentinel (proc
, build_string ("open\n"));
5093 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5095 FD_SET (p
->infd
, &input_wait_mask
);
5096 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5100 #endif /* NON_BLOCKING_CONNECT */
5101 } /* end for each file descriptor */
5102 } /* end while exit conditions not met */
5104 unbind_to (count
, Qnil
);
5106 /* If calling from keyboard input, do not quit
5107 since we want to return C-g as an input character.
5108 Otherwise, do pending quit if requested. */
5111 /* Prevent input_pending from remaining set if we quit. */
5112 clear_input_pending ();
5116 return got_some_input
;
5119 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5122 read_process_output_call (Lisp_Object fun_and_args
)
5124 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5128 read_process_output_error_handler (Lisp_Object error
)
5130 cmd_error_internal (error
, "error in process filter: ");
5132 update_echo_area ();
5133 Fsleep_for (make_number (2), Qnil
);
5137 /* Read pending output from the process channel,
5138 starting with our buffered-ahead character if we have one.
5139 Yield number of decoded characters read.
5141 This function reads at most 4096 characters.
5142 If you want to read all available subprocess output,
5143 you must call it repeatedly until it returns zero.
5145 The characters read are decoded according to PROC's coding-system
5149 read_process_output (Lisp_Object proc
, register int channel
)
5151 register int nbytes
;
5153 register Lisp_Object outstream
;
5154 register struct Lisp_Process
*p
= XPROCESS (proc
);
5155 register EMACS_INT opoint
;
5156 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5157 int carryover
= p
->decoding_carryover
;
5159 int count
= SPECPDL_INDEX ();
5160 Lisp_Object odeactivate
;
5162 chars
= (char *) alloca (carryover
+ readmax
);
5164 /* See the comment above. */
5165 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5167 #ifdef DATAGRAM_SOCKETS
5168 /* We have a working select, so proc_buffered_char is always -1. */
5169 if (DATAGRAM_CHAN_P (channel
))
5171 int len
= datagram_address
[channel
].len
;
5172 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5173 0, datagram_address
[channel
].sa
, &len
);
5177 if (proc_buffered_char
[channel
] < 0)
5180 if (XPROCESS (proc
)->gnutls_p
)
5181 nbytes
= emacs_gnutls_read (channel
, XPROCESS (proc
),
5182 chars
+ carryover
, readmax
);
5185 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5186 #ifdef ADAPTIVE_READ_BUFFERING
5187 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5189 int delay
= p
->read_output_delay
;
5192 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5195 process_output_delay_count
++;
5196 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5199 else if (delay
> 0 && (nbytes
== readmax
))
5201 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5203 process_output_delay_count
--;
5205 p
->read_output_delay
= delay
;
5208 p
->read_output_skip
= 1;
5209 process_output_skip
= 1;
5216 chars
[carryover
] = proc_buffered_char
[channel
];
5217 proc_buffered_char
[channel
] = -1;
5219 if (XPROCESS (proc
)->gnutls_p
)
5220 nbytes
= emacs_gnutls_read (channel
, XPROCESS (proc
),
5221 chars
+ carryover
+ 1, readmax
- 1);
5224 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5228 nbytes
= nbytes
+ 1;
5231 p
->decoding_carryover
= 0;
5233 /* At this point, NBYTES holds number of bytes just received
5234 (including the one in proc_buffered_char[channel]). */
5237 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5239 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5242 /* Now set NBYTES how many bytes we must decode. */
5243 nbytes
+= carryover
;
5245 odeactivate
= Vdeactivate_mark
;
5246 /* There's no good reason to let process filters change the current
5247 buffer, and many callers of accept-process-output, sit-for, and
5248 friends don't expect current-buffer to be changed from under them. */
5249 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5251 /* Read and dispose of the process output. */
5252 outstream
= p
->filter
;
5253 if (!NILP (outstream
))
5255 Lisp_Object obuffer
, okeymap
;
5257 int outer_running_asynch_code
= running_asynch_code
;
5258 int waiting
= waiting_for_user_input_p
;
5260 /* No need to gcpro these, because all we do with them later
5261 is test them for EQness, and none of them should be a string. */
5262 XSETBUFFER (obuffer
, current_buffer
);
5263 okeymap
= current_buffer
->keymap
;
5265 /* We inhibit quit here instead of just catching it so that
5266 hitting ^G when a filter happens to be running won't screw
5268 specbind (Qinhibit_quit
, Qt
);
5269 specbind (Qlast_nonmenu_event
, Qt
);
5271 /* In case we get recursively called,
5272 and we already saved the match data nonrecursively,
5273 save the same match data in safely recursive fashion. */
5274 if (outer_running_asynch_code
)
5277 /* Don't clobber the CURRENT match data, either! */
5278 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5279 restore_search_regs ();
5280 record_unwind_save_match_data ();
5281 Fset_match_data (tem
, Qt
);
5284 /* For speed, if a search happens within this code,
5285 save the match data in a special nonrecursive fashion. */
5286 running_asynch_code
= 1;
5288 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5289 text
= coding
->dst_object
;
5290 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5291 /* A new coding system might be found. */
5292 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5294 p
->decode_coding_system
= Vlast_coding_system_used
;
5296 /* Don't call setup_coding_system for
5297 proc_decode_coding_system[channel] here. It is done in
5298 detect_coding called via decode_coding above. */
5300 /* If a coding system for encoding is not yet decided, we set
5301 it as the same as coding-system for decoding.
5303 But, before doing that we must check if
5304 proc_encode_coding_system[p->outfd] surely points to a
5305 valid memory because p->outfd will be changed once EOF is
5306 sent to the process. */
5307 if (NILP (p
->encode_coding_system
)
5308 && proc_encode_coding_system
[p
->outfd
])
5310 p
->encode_coding_system
5311 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5312 setup_coding_system (p
->encode_coding_system
,
5313 proc_encode_coding_system
[p
->outfd
]);
5317 if (coding
->carryover_bytes
> 0)
5319 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5320 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5321 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5322 coding
->carryover_bytes
);
5323 p
->decoding_carryover
= coding
->carryover_bytes
;
5325 if (SBYTES (text
) > 0)
5326 internal_condition_case_1 (read_process_output_call
,
5328 Fcons (proc
, Fcons (text
, Qnil
))),
5329 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5330 read_process_output_error_handler
);
5332 /* If we saved the match data nonrecursively, restore it now. */
5333 restore_search_regs ();
5334 running_asynch_code
= outer_running_asynch_code
;
5336 /* Restore waiting_for_user_input_p as it was
5337 when we were called, in case the filter clobbered it. */
5338 waiting_for_user_input_p
= waiting
;
5340 #if 0 /* Call record_asynch_buffer_change unconditionally,
5341 because we might have changed minor modes or other things
5342 that affect key bindings. */
5343 if (! EQ (Fcurrent_buffer (), obuffer
)
5344 || ! EQ (current_buffer
->keymap
, okeymap
))
5346 /* But do it only if the caller is actually going to read events.
5347 Otherwise there's no need to make him wake up, and it could
5348 cause trouble (for example it would make sit_for return). */
5349 if (waiting_for_user_input_p
== -1)
5350 record_asynch_buffer_change ();
5353 /* If no filter, write into buffer if it isn't dead. */
5354 else if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5356 Lisp_Object old_read_only
;
5357 EMACS_INT old_begv
, old_zv
;
5358 EMACS_INT old_begv_byte
, old_zv_byte
;
5359 EMACS_INT before
, before_byte
;
5360 EMACS_INT opoint_byte
;
5364 Fset_buffer (p
->buffer
);
5366 opoint_byte
= PT_BYTE
;
5367 old_read_only
= current_buffer
->read_only
;
5370 old_begv_byte
= BEGV_BYTE
;
5371 old_zv_byte
= ZV_BYTE
;
5373 current_buffer
->read_only
= Qnil
;
5375 /* Insert new output into buffer
5376 at the current end-of-output marker,
5377 thus preserving logical ordering of input and output. */
5378 if (XMARKER (p
->mark
)->buffer
)
5379 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5380 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5383 SET_PT_BOTH (ZV
, ZV_BYTE
);
5385 before_byte
= PT_BYTE
;
5387 /* If the output marker is outside of the visible region, save
5388 the restriction and widen. */
5389 if (! (BEGV
<= PT
&& PT
<= ZV
))
5392 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5393 text
= coding
->dst_object
;
5394 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5395 /* A new coding system might be found. See the comment in the
5396 similar code in the previous `if' block. */
5397 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5399 p
->decode_coding_system
= Vlast_coding_system_used
;
5400 if (NILP (p
->encode_coding_system
)
5401 && proc_encode_coding_system
[p
->outfd
])
5403 p
->encode_coding_system
5404 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5405 setup_coding_system (p
->encode_coding_system
,
5406 proc_encode_coding_system
[p
->outfd
]);
5409 if (coding
->carryover_bytes
> 0)
5411 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5412 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5413 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5414 coding
->carryover_bytes
);
5415 p
->decoding_carryover
= coding
->carryover_bytes
;
5417 /* Adjust the multibyteness of TEXT to that of the buffer. */
5418 if (NILP (current_buffer
->enable_multibyte_characters
)
5419 != ! STRING_MULTIBYTE (text
))
5420 text
= (STRING_MULTIBYTE (text
)
5421 ? Fstring_as_unibyte (text
)
5422 : Fstring_to_multibyte (text
));
5423 /* Insert before markers in case we are inserting where
5424 the buffer's mark is, and the user's next command is Meta-y. */
5425 insert_from_string_before_markers (text
, 0, 0,
5426 SCHARS (text
), SBYTES (text
), 0);
5428 /* Make sure the process marker's position is valid when the
5429 process buffer is changed in the signal_after_change above.
5430 W3 is known to do that. */
5431 if (BUFFERP (p
->buffer
)
5432 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5433 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5435 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5437 update_mode_lines
++;
5439 /* Make sure opoint and the old restrictions
5440 float ahead of any new text just as point would. */
5441 if (opoint
>= before
)
5443 opoint
+= PT
- before
;
5444 opoint_byte
+= PT_BYTE
- before_byte
;
5446 if (old_begv
> before
)
5448 old_begv
+= PT
- before
;
5449 old_begv_byte
+= PT_BYTE
- before_byte
;
5451 if (old_zv
>= before
)
5453 old_zv
+= PT
- before
;
5454 old_zv_byte
+= PT_BYTE
- before_byte
;
5457 /* If the restriction isn't what it should be, set it. */
5458 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5459 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5462 current_buffer
->read_only
= old_read_only
;
5463 SET_PT_BOTH (opoint
, opoint_byte
);
5465 /* Handling the process output should not deactivate the mark. */
5466 Vdeactivate_mark
= odeactivate
;
5468 unbind_to (count
, Qnil
);
5472 /* Sending data to subprocess */
5474 jmp_buf send_process_frame
;
5475 Lisp_Object process_sent_to
;
5478 send_process_trap (int ignore
)
5480 SIGNAL_THREAD_CHECK (SIGPIPE
);
5481 sigunblock (sigmask (SIGPIPE
));
5482 longjmp (send_process_frame
, 1);
5485 /* Send some data to process PROC.
5486 BUF is the beginning of the data; LEN is the number of characters.
5487 OBJECT is the Lisp object that the data comes from. If OBJECT is
5488 nil or t, it means that the data comes from C string.
5490 If OBJECT is not nil, the data is encoded by PROC's coding-system
5491 for encoding before it is sent.
5493 This function can evaluate Lisp code and can garbage collect. */
5496 send_process (volatile Lisp_Object proc
, const unsigned char *volatile buf
,
5497 volatile EMACS_INT len
, volatile Lisp_Object object
)
5499 /* Use volatile to protect variables from being clobbered by longjmp. */
5500 struct Lisp_Process
*p
= XPROCESS (proc
);
5502 struct coding_system
*coding
;
5503 struct gcpro gcpro1
;
5504 SIGTYPE (*volatile old_sigpipe
) (int);
5508 if (p
->raw_status_new
)
5510 if (! EQ (p
->status
, Qrun
))
5511 error ("Process %s not running", SDATA (p
->name
));
5513 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5515 coding
= proc_encode_coding_system
[p
->outfd
];
5516 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5518 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5519 || (BUFFERP (object
)
5520 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5523 p
->encode_coding_system
5524 = complement_process_encoding_system (p
->encode_coding_system
);
5525 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5527 /* The coding system for encoding was changed to raw-text
5528 because we sent a unibyte text previously. Now we are
5529 sending a multibyte text, thus we must encode it by the
5530 original coding system specified for the current process.
5532 Another reason we comming here is that the coding system
5533 was just complemented and new one was returned by
5534 complement_process_encoding_system. */
5535 setup_coding_system (p
->encode_coding_system
, coding
);
5536 Vlast_coding_system_used
= p
->encode_coding_system
;
5538 coding
->src_multibyte
= 1;
5542 /* For sending a unibyte text, character code conversion should
5543 not take place but EOL conversion should. So, setup raw-text
5544 or one of the subsidiary if we have not yet done it. */
5545 if (CODING_REQUIRE_ENCODING (coding
))
5547 if (CODING_REQUIRE_FLUSHING (coding
))
5549 /* But, before changing the coding, we must flush out data. */
5550 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5551 send_process (proc
, "", 0, Qt
);
5552 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5554 setup_coding_system (raw_text_coding_system
5555 (Vlast_coding_system_used
),
5557 coding
->src_multibyte
= 0;
5560 coding
->dst_multibyte
= 0;
5562 if (CODING_REQUIRE_ENCODING (coding
))
5564 coding
->dst_object
= Qt
;
5565 if (BUFFERP (object
))
5567 EMACS_INT from_byte
, from
, to
;
5568 EMACS_INT save_pt
, save_pt_byte
;
5569 struct buffer
*cur
= current_buffer
;
5571 set_buffer_internal (XBUFFER (object
));
5572 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5574 from_byte
= PTR_BYTE_POS (buf
);
5575 from
= BYTE_TO_CHAR (from_byte
);
5576 to
= BYTE_TO_CHAR (from_byte
+ len
);
5577 TEMP_SET_PT_BOTH (from
, from_byte
);
5578 encode_coding_object (coding
, object
, from
, from_byte
,
5579 to
, from_byte
+ len
, Qt
);
5580 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5581 set_buffer_internal (cur
);
5583 else if (STRINGP (object
))
5585 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5586 SBYTES (object
), Qt
);
5590 coding
->dst_object
= make_unibyte_string (buf
, len
);
5591 coding
->produced
= len
;
5594 len
= coding
->produced
;
5595 object
= coding
->dst_object
;
5596 buf
= SDATA (object
);
5599 if (pty_max_bytes
== 0)
5601 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5602 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5603 if (pty_max_bytes
< 0)
5604 pty_max_bytes
= 250;
5606 pty_max_bytes
= 250;
5608 /* Deduct one, to leave space for the eof. */
5612 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5613 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5614 when returning with longjmp despite being declared volatile. */
5615 if (!setjmp (send_process_frame
))
5617 process_sent_to
= proc
;
5620 EMACS_INT
this = len
;
5622 /* Send this batch, using one or more write calls. */
5625 int outfd
= p
->outfd
;
5626 old_sigpipe
= (SIGTYPE (*) (int)) signal (SIGPIPE
, send_process_trap
);
5627 #ifdef DATAGRAM_SOCKETS
5628 if (DATAGRAM_CHAN_P (outfd
))
5630 rv
= sendto (outfd
, (char *) buf
, this,
5631 0, datagram_address
[outfd
].sa
,
5632 datagram_address
[outfd
].len
);
5633 if (rv
< 0 && errno
== EMSGSIZE
)
5635 signal (SIGPIPE
, old_sigpipe
);
5636 report_file_error ("sending datagram",
5637 Fcons (proc
, Qnil
));
5644 if (XPROCESS (proc
)->gnutls_p
)
5645 rv
= emacs_gnutls_write (outfd
,
5647 (char *) buf
, this);
5650 rv
= emacs_write (outfd
, (char *) buf
, this);
5651 #ifdef ADAPTIVE_READ_BUFFERING
5652 if (p
->read_output_delay
> 0
5653 && p
->adaptive_read_buffering
== 1)
5655 p
->read_output_delay
= 0;
5656 process_output_delay_count
--;
5657 p
->read_output_skip
= 0;
5661 signal (SIGPIPE
, old_sigpipe
);
5667 || errno
== EWOULDBLOCK
5673 /* Buffer is full. Wait, accepting input;
5674 that may allow the program
5675 to finish doing output and read more. */
5679 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5680 /* A gross hack to work around a bug in FreeBSD.
5681 In the following sequence, read(2) returns
5685 write(2) 954 bytes, get EAGAIN
5686 read(2) 1024 bytes in process_read_output
5687 read(2) 11 bytes in process_read_output
5689 That is, read(2) returns more bytes than have
5690 ever been written successfully. The 1033 bytes
5691 read are the 1022 bytes written successfully
5692 after processing (for example with CRs added if
5693 the terminal is set up that way which it is
5694 here). The same bytes will be seen again in a
5695 later read(2), without the CRs. */
5697 if (errno
== EAGAIN
)
5700 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5702 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5704 /* Running filters might relocate buffers or strings.
5705 Arrange to relocate BUF. */
5706 if (BUFFERP (object
))
5707 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5708 else if (STRINGP (object
))
5709 offset
= buf
- SDATA (object
);
5711 #ifdef EMACS_HAS_USECS
5712 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5714 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5717 if (BUFFERP (object
))
5718 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5719 else if (STRINGP (object
))
5720 buf
= offset
+ SDATA (object
);
5725 /* This is a real error. */
5726 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5736 signal (SIGPIPE
, old_sigpipe
);
5737 proc
= process_sent_to
;
5738 p
= XPROCESS (proc
);
5739 p
->raw_status_new
= 0;
5740 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5741 p
->tick
= ++process_tick
;
5742 deactivate_process (proc
);
5743 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5749 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5751 doc
: /* Send current contents of region as input to PROCESS.
5752 PROCESS may be a process, a buffer, the name of a process or buffer, or
5753 nil, indicating the current buffer's process.
5754 Called from program, takes three arguments, PROCESS, START and END.
5755 If the region is more than 500 characters long,
5756 it is sent in several bunches. This may happen even for shorter regions.
5757 Output from processes can arrive in between bunches. */)
5758 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5761 EMACS_INT start1
, end1
;
5763 proc
= get_process (process
);
5764 validate_region (&start
, &end
);
5766 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5767 move_gap (XINT (start
));
5769 start1
= CHAR_TO_BYTE (XINT (start
));
5770 end1
= CHAR_TO_BYTE (XINT (end
));
5771 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5772 Fcurrent_buffer ());
5777 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5779 doc
: /* Send PROCESS the contents of STRING as input.
5780 PROCESS may be a process, a buffer, the name of a process or buffer, or
5781 nil, indicating the current buffer's process.
5782 If STRING is more than 500 characters long,
5783 it is sent in several bunches. This may happen even for shorter strings.
5784 Output from processes can arrive in between bunches. */)
5785 (Lisp_Object process
, Lisp_Object string
)
5788 CHECK_STRING (string
);
5789 proc
= get_process (process
);
5790 send_process (proc
, SDATA (string
),
5791 SBYTES (string
), string
);
5795 /* Return the foreground process group for the tty/pty that
5796 the process P uses. */
5798 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5803 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5806 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5807 master side. Try the slave side. */
5808 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
5812 ioctl (fd
, TIOCGPGRP
, &gid
);
5816 #endif /* defined (TIOCGPGRP ) */
5821 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5822 Sprocess_running_child_p
, 0, 1, 0,
5823 doc
: /* Return t if PROCESS has given the terminal to a child.
5824 If the operating system does not make it possible to find out,
5825 return t unconditionally. */)
5826 (Lisp_Object process
)
5828 /* Initialize in case ioctl doesn't exist or gives an error,
5829 in a way that will cause returning t. */
5832 struct Lisp_Process
*p
;
5834 proc
= get_process (process
);
5835 p
= XPROCESS (proc
);
5837 if (!EQ (p
->type
, Qreal
))
5838 error ("Process %s is not a subprocess",
5841 error ("Process %s is not active",
5844 gid
= emacs_get_tty_pgrp (p
);
5851 /* send a signal number SIGNO to PROCESS.
5852 If CURRENT_GROUP is t, that means send to the process group
5853 that currently owns the terminal being used to communicate with PROCESS.
5854 This is used for various commands in shell mode.
5855 If CURRENT_GROUP is lambda, that means send to the process group
5856 that currently owns the terminal, but only if it is NOT the shell itself.
5858 If NOMSG is zero, insert signal-announcements into process's buffers
5861 If we can, we try to signal PROCESS by sending control characters
5862 down the pty. This allows us to signal inferiors who have changed
5863 their uid, for which killpg would return an EPERM error. */
5866 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5870 register struct Lisp_Process
*p
;
5874 proc
= get_process (process
);
5875 p
= XPROCESS (proc
);
5877 if (!EQ (p
->type
, Qreal
))
5878 error ("Process %s is not a subprocess",
5881 error ("Process %s is not active",
5885 current_group
= Qnil
;
5887 /* If we are using pgrps, get a pgrp number and make it negative. */
5888 if (NILP (current_group
))
5889 /* Send the signal to the shell's process group. */
5893 #ifdef SIGNALS_VIA_CHARACTERS
5894 /* If possible, send signals to the entire pgrp
5895 by sending an input character to it. */
5898 cc_t
*sig_char
= NULL
;
5900 tcgetattr (p
->infd
, &t
);
5905 sig_char
= &t
.c_cc
[VINTR
];
5909 sig_char
= &t
.c_cc
[VQUIT
];
5913 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5914 sig_char
= &t
.c_cc
[VSWTCH
];
5916 sig_char
= &t
.c_cc
[VSUSP
];
5921 if (sig_char
&& *sig_char
!= CDISABLE
)
5923 send_process (proc
, sig_char
, 1, Qnil
);
5926 /* If we can't send the signal with a character,
5927 fall through and send it another way. */
5929 /* The code above may fall through if it can't
5930 handle the signal. */
5931 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5934 /* Get the current pgrp using the tty itself, if we have that.
5935 Otherwise, use the pty to get the pgrp.
5936 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5937 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5938 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5939 His patch indicates that if TIOCGPGRP returns an error, then
5940 we should just assume that p->pid is also the process group id. */
5942 gid
= emacs_get_tty_pgrp (p
);
5945 /* If we can't get the information, assume
5946 the shell owns the tty. */
5949 /* It is not clear whether anything really can set GID to -1.
5950 Perhaps on some system one of those ioctls can or could do so.
5951 Or perhaps this is vestigial. */
5954 #else /* ! defined (TIOCGPGRP ) */
5955 /* Can't select pgrps on this system, so we know that
5956 the child itself heads the pgrp. */
5958 #endif /* ! defined (TIOCGPGRP ) */
5960 /* If current_group is lambda, and the shell owns the terminal,
5961 don't send any signal. */
5962 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5970 p
->raw_status_new
= 0;
5972 p
->tick
= ++process_tick
;
5975 status_notify (NULL
);
5976 redisplay_preserve_echo_area (13);
5979 #endif /* ! defined (SIGCONT) */
5983 flush_pending_output (p
->infd
);
5987 /* If we don't have process groups, send the signal to the immediate
5988 subprocess. That isn't really right, but it's better than any
5989 obvious alternative. */
5992 kill (p
->pid
, signo
);
5996 /* gid may be a pid, or minus a pgrp's number */
5998 if (!NILP (current_group
))
6000 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6001 EMACS_KILLPG (gid
, signo
);
6008 #else /* ! defined (TIOCSIGSEND) */
6009 EMACS_KILLPG (gid
, signo
);
6010 #endif /* ! defined (TIOCSIGSEND) */
6013 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6014 doc
: /* Interrupt process PROCESS.
6015 PROCESS may be a process, a buffer, or the name of a process or buffer.
6016 No arg or nil means current buffer's process.
6017 Second arg CURRENT-GROUP non-nil means send signal to
6018 the current process-group of the process's controlling terminal
6019 rather than to the process's own process group.
6020 If the process is a shell, this means interrupt current subjob
6021 rather than the shell.
6023 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6024 don't send the signal. */)
6025 (Lisp_Object process
, Lisp_Object current_group
)
6027 process_send_signal (process
, SIGINT
, current_group
, 0);
6031 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6032 doc
: /* Kill process PROCESS. May be process or name of one.
6033 See function `interrupt-process' for more details on usage. */)
6034 (Lisp_Object process
, Lisp_Object current_group
)
6036 process_send_signal (process
, SIGKILL
, current_group
, 0);
6040 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6041 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6042 See function `interrupt-process' for more details on usage. */)
6043 (Lisp_Object process
, Lisp_Object current_group
)
6045 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6049 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6050 doc
: /* Stop process PROCESS. May be process or name of one.
6051 See function `interrupt-process' for more details on usage.
6052 If PROCESS is a network or serial process, inhibit handling of incoming
6054 (Lisp_Object process
, Lisp_Object current_group
)
6056 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6058 struct Lisp_Process
*p
;
6060 p
= XPROCESS (process
);
6061 if (NILP (p
->command
)
6064 FD_CLR (p
->infd
, &input_wait_mask
);
6065 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6071 error ("No SIGTSTP support");
6073 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6078 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6079 doc
: /* Continue process PROCESS. May be process or name of one.
6080 See function `interrupt-process' for more details on usage.
6081 If PROCESS is a network or serial process, resume handling of incoming
6083 (Lisp_Object process
, Lisp_Object current_group
)
6085 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6087 struct Lisp_Process
*p
;
6089 p
= XPROCESS (process
);
6090 if (EQ (p
->command
, Qt
)
6092 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6094 FD_SET (p
->infd
, &input_wait_mask
);
6095 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6097 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6098 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6099 #else /* not WINDOWSNT */
6100 tcflush (p
->infd
, TCIFLUSH
);
6101 #endif /* not WINDOWSNT */
6107 process_send_signal (process
, SIGCONT
, current_group
, 0);
6109 error ("No SIGCONT support");
6114 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6115 2, 2, "sProcess (name or number): \nnSignal code: ",
6116 doc
: /* Send PROCESS the signal with code SIGCODE.
6117 PROCESS may also be a number specifying the process id of the
6118 process to signal; in this case, the process need not be a child of
6120 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6121 (Lisp_Object process
, Lisp_Object sigcode
)
6125 if (INTEGERP (process
))
6127 pid
= XINT (process
);
6131 if (FLOATP (process
))
6133 pid
= (pid_t
) XFLOAT_DATA (process
);
6137 if (STRINGP (process
))
6140 if (tem
= Fget_process (process
), NILP (tem
))
6142 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6149 process
= get_process (process
);
6154 CHECK_PROCESS (process
);
6155 pid
= XPROCESS (process
)->pid
;
6157 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6161 #define parse_signal(NAME, VALUE) \
6162 else if (!xstrcasecmp (name, NAME)) \
6163 XSETINT (sigcode, VALUE)
6165 if (INTEGERP (sigcode
))
6169 unsigned char *name
;
6171 CHECK_SYMBOL (sigcode
);
6172 name
= SDATA (SYMBOL_NAME (sigcode
));
6174 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6180 parse_signal ("usr1", SIGUSR1
);
6183 parse_signal ("usr2", SIGUSR2
);
6186 parse_signal ("term", SIGTERM
);
6189 parse_signal ("hup", SIGHUP
);
6192 parse_signal ("int", SIGINT
);
6195 parse_signal ("quit", SIGQUIT
);
6198 parse_signal ("ill", SIGILL
);
6201 parse_signal ("abrt", SIGABRT
);
6204 parse_signal ("emt", SIGEMT
);
6207 parse_signal ("kill", SIGKILL
);
6210 parse_signal ("fpe", SIGFPE
);
6213 parse_signal ("bus", SIGBUS
);
6216 parse_signal ("segv", SIGSEGV
);
6219 parse_signal ("sys", SIGSYS
);
6222 parse_signal ("pipe", SIGPIPE
);
6225 parse_signal ("alrm", SIGALRM
);
6228 parse_signal ("urg", SIGURG
);
6231 parse_signal ("stop", SIGSTOP
);
6234 parse_signal ("tstp", SIGTSTP
);
6237 parse_signal ("cont", SIGCONT
);
6240 parse_signal ("chld", SIGCHLD
);
6243 parse_signal ("ttin", SIGTTIN
);
6246 parse_signal ("ttou", SIGTTOU
);
6249 parse_signal ("io", SIGIO
);
6252 parse_signal ("xcpu", SIGXCPU
);
6255 parse_signal ("xfsz", SIGXFSZ
);
6258 parse_signal ("vtalrm", SIGVTALRM
);
6261 parse_signal ("prof", SIGPROF
);
6264 parse_signal ("winch", SIGWINCH
);
6267 parse_signal ("info", SIGINFO
);
6270 error ("Undefined signal name %s", name
);
6275 return make_number (kill (pid
, XINT (sigcode
)));
6278 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6279 doc
: /* Make PROCESS see end-of-file in its input.
6280 EOF comes after any text already sent to it.
6281 PROCESS may be a process, a buffer, the name of a process or buffer, or
6282 nil, indicating the current buffer's process.
6283 If PROCESS is a network connection, or is a process communicating
6284 through a pipe (as opposed to a pty), then you cannot send any more
6285 text to PROCESS after you call this function.
6286 If PROCESS is a serial process, wait until all output written to the
6287 process has been transmitted to the serial port. */)
6288 (Lisp_Object process
)
6291 struct coding_system
*coding
;
6293 if (DATAGRAM_CONN_P (process
))
6296 proc
= get_process (process
);
6297 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6299 /* Make sure the process is really alive. */
6300 if (XPROCESS (proc
)->raw_status_new
)
6301 update_status (XPROCESS (proc
));
6302 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6303 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6305 if (CODING_REQUIRE_FLUSHING (coding
))
6307 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6308 send_process (proc
, "", 0, Qnil
);
6311 if (XPROCESS (proc
)->pty_flag
)
6312 send_process (proc
, "\004", 1, Qnil
);
6313 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6316 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6317 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6318 #endif /* not WINDOWSNT */
6319 /* Do nothing on Windows because writes are blocking. */
6323 int old_outfd
, new_outfd
;
6325 #ifdef HAVE_SHUTDOWN
6326 /* If this is a network connection, or socketpair is used
6327 for communication with the subprocess, call shutdown to cause EOF.
6328 (In some old system, shutdown to socketpair doesn't work.
6329 Then we just can't win.) */
6330 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6331 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6332 shutdown (XPROCESS (proc
)->outfd
, 1);
6333 /* In case of socketpair, outfd == infd, so don't close it. */
6334 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6335 emacs_close (XPROCESS (proc
)->outfd
);
6336 #else /* not HAVE_SHUTDOWN */
6337 emacs_close (XPROCESS (proc
)->outfd
);
6338 #endif /* not HAVE_SHUTDOWN */
6339 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6342 old_outfd
= XPROCESS (proc
)->outfd
;
6344 if (!proc_encode_coding_system
[new_outfd
])
6345 proc_encode_coding_system
[new_outfd
]
6346 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6347 memcpy (proc_encode_coding_system
[new_outfd
],
6348 proc_encode_coding_system
[old_outfd
],
6349 sizeof (struct coding_system
));
6350 memset (proc_encode_coding_system
[old_outfd
], 0,
6351 sizeof (struct coding_system
));
6353 XPROCESS (proc
)->outfd
= new_outfd
;
6358 /* On receipt of a signal that a child status has changed, loop asking
6359 about children with changed statuses until the system says there
6362 All we do is change the status; we do not run sentinels or print
6363 notifications. That is saved for the next time keyboard input is
6364 done, in order to avoid timing errors.
6366 ** WARNING: this can be called during garbage collection.
6367 Therefore, it must not be fooled by the presence of mark bits in
6370 ** USG WARNING: Although it is not obvious from the documentation
6371 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6372 signal() before executing at least one wait(), otherwise the
6373 handler will be called again, resulting in an infinite loop. The
6374 relevant portion of the documentation reads "SIGCLD signals will be
6375 queued and the signal-catching function will be continually
6376 reentered until the queue is empty". Invoking signal() causes the
6377 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6380 ** Malloc WARNING: This should never call malloc either directly or
6381 indirectly; if it does, that is a bug */
6385 sigchld_handler (int signo
)
6387 int old_errno
= errno
;
6389 struct Lisp_Process
*p
;
6391 SIGNAL_THREAD_CHECK (signo
);
6402 #endif /* no WUNTRACED */
6403 /* Keep trying to get a status until we get a definitive result. */
6407 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6409 while (pid
< 0 && errno
== EINTR
);
6413 /* PID == 0 means no processes found, PID == -1 means a real
6414 failure. We have done all our job, so return. */
6421 #endif /* no WNOHANG */
6423 /* Find the process that signaled us, and record its status. */
6425 /* The process can have been deleted by Fdelete_process. */
6426 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6428 Lisp_Object xpid
= XCAR (tail
);
6429 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6430 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6432 XSETCAR (tail
, Qnil
);
6433 goto sigchld_end_of_loop
;
6437 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6439 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6441 proc
= XCDR (XCAR (tail
));
6442 p
= XPROCESS (proc
);
6443 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6448 /* Look for an asynchronous process whose pid hasn't been filled
6451 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6453 proc
= XCDR (XCAR (tail
));
6454 p
= XPROCESS (proc
);
6460 /* Change the status of the process that was found. */
6463 int clear_desc_flag
= 0;
6465 p
->tick
= ++process_tick
;
6467 p
->raw_status_new
= 1;
6469 /* If process has terminated, stop waiting for its output. */
6470 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6472 clear_desc_flag
= 1;
6474 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6475 if (clear_desc_flag
)
6477 FD_CLR (p
->infd
, &input_wait_mask
);
6478 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6481 /* Tell wait_reading_process_output that it needs to wake up and
6483 if (input_available_clear_time
)
6484 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6487 /* There was no asynchronous process found for that pid: we have
6488 a synchronous process. */
6491 synch_process_alive
= 0;
6493 /* Report the status of the synchronous process. */
6495 synch_process_retcode
= WRETCODE (w
);
6496 else if (WIFSIGNALED (w
))
6497 synch_process_termsig
= WTERMSIG (w
);
6499 /* Tell wait_reading_process_output that it needs to wake up and
6501 if (input_available_clear_time
)
6502 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6505 sigchld_end_of_loop
:
6508 /* On some systems, we must return right away.
6509 If any more processes want to signal us, we will
6511 Otherwise (on systems that have WNOHANG), loop around
6512 to use up all the processes that have something to tell us. */
6513 #if (defined WINDOWSNT \
6514 || (defined USG && !defined GNU_LINUX \
6515 && !(defined HPUX && defined WNOHANG)))
6518 #endif /* USG, but not HPUX with WNOHANG */
6521 #endif /* SIGCHLD */
6525 exec_sentinel_unwind (Lisp_Object data
)
6527 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6532 exec_sentinel_error_handler (Lisp_Object error
)
6534 cmd_error_internal (error
, "error in process sentinel: ");
6536 update_echo_area ();
6537 Fsleep_for (make_number (2), Qnil
);
6542 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6544 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6545 register struct Lisp_Process
*p
= XPROCESS (proc
);
6546 int count
= SPECPDL_INDEX ();
6547 int outer_running_asynch_code
= running_asynch_code
;
6548 int waiting
= waiting_for_user_input_p
;
6550 if (inhibit_sentinels
)
6553 /* No need to gcpro these, because all we do with them later
6554 is test them for EQness, and none of them should be a string. */
6555 odeactivate
= Vdeactivate_mark
;
6556 XSETBUFFER (obuffer
, current_buffer
);
6557 okeymap
= current_buffer
->keymap
;
6559 /* There's no good reason to let sentinels change the current
6560 buffer, and many callers of accept-process-output, sit-for, and
6561 friends don't expect current-buffer to be changed from under them. */
6562 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6564 sentinel
= p
->sentinel
;
6565 if (NILP (sentinel
))
6568 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6569 assure that it gets restored no matter how the sentinel exits. */
6571 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6572 /* Inhibit quit so that random quits don't screw up a running filter. */
6573 specbind (Qinhibit_quit
, Qt
);
6574 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6576 /* In case we get recursively called,
6577 and we already saved the match data nonrecursively,
6578 save the same match data in safely recursive fashion. */
6579 if (outer_running_asynch_code
)
6582 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6583 restore_search_regs ();
6584 record_unwind_save_match_data ();
6585 Fset_match_data (tem
, Qt
);
6588 /* For speed, if a search happens within this code,
6589 save the match data in a special nonrecursive fashion. */
6590 running_asynch_code
= 1;
6592 internal_condition_case_1 (read_process_output_call
,
6594 Fcons (proc
, Fcons (reason
, Qnil
))),
6595 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6596 exec_sentinel_error_handler
);
6598 /* If we saved the match data nonrecursively, restore it now. */
6599 restore_search_regs ();
6600 running_asynch_code
= outer_running_asynch_code
;
6602 Vdeactivate_mark
= odeactivate
;
6604 /* Restore waiting_for_user_input_p as it was
6605 when we were called, in case the filter clobbered it. */
6606 waiting_for_user_input_p
= waiting
;
6609 if (! EQ (Fcurrent_buffer (), obuffer
)
6610 || ! EQ (current_buffer
->keymap
, okeymap
))
6612 /* But do it only if the caller is actually going to read events.
6613 Otherwise there's no need to make him wake up, and it could
6614 cause trouble (for example it would make sit_for return). */
6615 if (waiting_for_user_input_p
== -1)
6616 record_asynch_buffer_change ();
6618 unbind_to (count
, Qnil
);
6621 /* Report all recent events of a change in process status
6622 (either run the sentinel or output a message).
6623 This is usually done while Emacs is waiting for keyboard input
6624 but can be done at other times. */
6627 status_notify (struct Lisp_Process
*deleting_process
)
6629 register Lisp_Object proc
, buffer
;
6630 Lisp_Object tail
, msg
;
6631 struct gcpro gcpro1
, gcpro2
;
6635 /* We need to gcpro tail; if read_process_output calls a filter
6636 which deletes a process and removes the cons to which tail points
6637 from Vprocess_alist, and then causes a GC, tail is an unprotected
6641 /* Set this now, so that if new processes are created by sentinels
6642 that we run, we get called again to handle their status changes. */
6643 update_tick
= process_tick
;
6645 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6648 register struct Lisp_Process
*p
;
6650 proc
= Fcdr (XCAR (tail
));
6651 p
= XPROCESS (proc
);
6653 if (p
->tick
!= p
->update_tick
)
6655 p
->update_tick
= p
->tick
;
6657 /* If process is still active, read any output that remains. */
6658 while (! EQ (p
->filter
, Qt
)
6659 && ! EQ (p
->status
, Qconnect
)
6660 && ! EQ (p
->status
, Qlisten
)
6661 /* Network or serial process not stopped: */
6662 && ! EQ (p
->command
, Qt
)
6664 && p
!= deleting_process
6665 && read_process_output (proc
, p
->infd
) > 0);
6669 /* Get the text to use for the message. */
6670 if (p
->raw_status_new
)
6672 msg
= status_message (p
);
6674 /* If process is terminated, deactivate it or delete it. */
6676 if (CONSP (p
->status
))
6677 symbol
= XCAR (p
->status
);
6679 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6680 || EQ (symbol
, Qclosed
))
6682 if (delete_exited_processes
)
6683 remove_process (proc
);
6685 deactivate_process (proc
);
6688 /* The actions above may have further incremented p->tick.
6689 So set p->update_tick again
6690 so that an error in the sentinel will not cause
6691 this code to be run again. */
6692 p
->update_tick
= p
->tick
;
6693 /* Now output the message suitably. */
6694 if (!NILP (p
->sentinel
))
6695 exec_sentinel (proc
, msg
);
6696 /* Don't bother with a message in the buffer
6697 when a process becomes runnable. */
6698 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6701 struct buffer
*old
= current_buffer
;
6702 EMACS_INT opoint
, opoint_byte
;
6703 EMACS_INT before
, before_byte
;
6705 /* Avoid error if buffer is deleted
6706 (probably that's why the process is dead, too) */
6707 if (NILP (XBUFFER (buffer
)->name
))
6709 Fset_buffer (buffer
);
6712 opoint_byte
= PT_BYTE
;
6713 /* Insert new output into buffer
6714 at the current end-of-output marker,
6715 thus preserving logical ordering of input and output. */
6716 if (XMARKER (p
->mark
)->buffer
)
6717 Fgoto_char (p
->mark
);
6719 SET_PT_BOTH (ZV
, ZV_BYTE
);
6722 before_byte
= PT_BYTE
;
6724 tem
= current_buffer
->read_only
;
6725 current_buffer
->read_only
= Qnil
;
6726 insert_string ("\nProcess ");
6727 Finsert (1, &p
->name
);
6728 insert_string (" ");
6730 current_buffer
->read_only
= tem
;
6731 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6733 if (opoint
>= before
)
6734 SET_PT_BOTH (opoint
+ (PT
- before
),
6735 opoint_byte
+ (PT_BYTE
- before_byte
));
6737 SET_PT_BOTH (opoint
, opoint_byte
);
6739 set_buffer_internal (old
);
6744 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6749 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6750 Sset_process_coding_system
, 1, 3, 0,
6751 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6752 DECODING will be used to decode subprocess output and ENCODING to
6753 encode subprocess input. */)
6754 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6756 register struct Lisp_Process
*p
;
6758 CHECK_PROCESS (process
);
6759 p
= XPROCESS (process
);
6761 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6763 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6764 Fcheck_coding_system (decoding
);
6765 Fcheck_coding_system (encoding
);
6766 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6767 p
->decode_coding_system
= decoding
;
6768 p
->encode_coding_system
= encoding
;
6769 setup_process_coding_systems (process
);
6774 DEFUN ("process-coding-system",
6775 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6776 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6777 (register Lisp_Object process
)
6779 CHECK_PROCESS (process
);
6780 return Fcons (XPROCESS (process
)->decode_coding_system
,
6781 XPROCESS (process
)->encode_coding_system
);
6784 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6785 Sset_process_filter_multibyte
, 2, 2, 0,
6786 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6787 If FLAG is non-nil, the filter is given multibyte strings.
6788 If FLAG is nil, the filter is given unibyte strings. In this case,
6789 all character code conversion except for end-of-line conversion is
6791 (Lisp_Object process
, Lisp_Object flag
)
6793 register struct Lisp_Process
*p
;
6795 CHECK_PROCESS (process
);
6796 p
= XPROCESS (process
);
6798 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6799 setup_process_coding_systems (process
);
6804 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6805 Sprocess_filter_multibyte_p
, 1, 1, 0,
6806 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6807 (Lisp_Object process
)
6809 register struct Lisp_Process
*p
;
6810 struct coding_system
*coding
;
6812 CHECK_PROCESS (process
);
6813 p
= XPROCESS (process
);
6814 coding
= proc_decode_coding_system
[p
->infd
];
6815 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6822 add_gpm_wait_descriptor (int desc
)
6824 add_keyboard_wait_descriptor (desc
);
6828 delete_gpm_wait_descriptor (int desc
)
6830 delete_keyboard_wait_descriptor (desc
);
6833 /* Return nonzero if *MASK has a bit set
6834 that corresponds to one of the keyboard input descriptors. */
6837 keyboard_bit_set (fd_set
*mask
)
6841 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6842 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6843 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6849 #else /* not subprocesses */
6851 /* Defined on msdos.c. */
6852 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6855 /* Implementation of wait_reading_process_output, assuming that there
6856 are no subprocesses. Used only by the MS-DOS build.
6858 Wait for timeout to elapse and/or keyboard input to be available.
6861 timeout in seconds, or
6862 zero for no limit, or
6863 -1 means gobble data immediately available but don't wait for any.
6865 read_kbd is a Lisp_Object:
6866 0 to ignore keyboard input, or
6867 1 to return when input is available, or
6868 -1 means caller will actually read the input, so don't throw to
6871 see full version for other parameters. We know that wait_proc will
6872 always be NULL, since `subprocesses' isn't defined.
6874 do_display != 0 means redisplay should be done to show subprocess
6875 output that arrives.
6877 Return true if we received input from any process. */
6880 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6882 Lisp_Object wait_for_cell
,
6883 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6886 EMACS_TIME end_time
, timeout
;
6887 SELECT_TYPE waitchannels
;
6890 /* What does time_limit really mean? */
6891 if (time_limit
|| microsecs
)
6893 EMACS_GET_TIME (end_time
);
6894 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6895 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6898 /* Turn off periodic alarms (in case they are in use)
6899 and then turn off any other atimers,
6900 because the select emulator uses alarms. */
6902 turn_on_atimers (0);
6906 int timeout_reduced_for_timers
= 0;
6908 /* If calling from keyboard input, do not quit
6909 since we want to return C-g as an input character.
6910 Otherwise, do pending quit if requested. */
6914 /* Exit now if the cell we're waiting for became non-nil. */
6915 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6918 /* Compute time from now till when time limit is up */
6919 /* Exit if already run out */
6920 if (time_limit
== -1)
6922 /* -1 specified for timeout means
6923 gobble output available now
6924 but don't wait at all. */
6926 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6928 else if (time_limit
|| microsecs
)
6930 EMACS_GET_TIME (timeout
);
6931 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6932 if (EMACS_TIME_NEG_P (timeout
))
6937 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6940 /* If our caller will not immediately handle keyboard events,
6941 run timer events directly.
6942 (Callers that will immediately read keyboard events
6943 call timer_delay on their own.) */
6944 if (NILP (wait_for_cell
))
6946 EMACS_TIME timer_delay
;
6950 int old_timers_run
= timers_run
;
6951 timer_delay
= timer_check (1);
6952 if (timers_run
!= old_timers_run
&& do_display
)
6953 /* We must retry, since a timer may have requeued itself
6954 and that could alter the time delay. */
6955 redisplay_preserve_echo_area (14);
6959 while (!detect_input_pending ());
6961 /* If there is unread keyboard input, also return. */
6963 && requeued_events_pending_p ())
6966 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6968 EMACS_TIME difference
;
6969 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6970 if (EMACS_TIME_NEG_P (difference
))
6972 timeout
= timer_delay
;
6973 timeout_reduced_for_timers
= 1;
6978 /* Cause C-g and alarm signals to take immediate action,
6979 and cause input available signals to zero out timeout. */
6981 set_waiting_for_input (&timeout
);
6983 /* Wait till there is something to do. */
6985 if (! read_kbd
&& NILP (wait_for_cell
))
6986 FD_ZERO (&waitchannels
);
6988 FD_SET (0, &waitchannels
);
6990 /* If a frame has been newly mapped and needs updating,
6991 reprocess its display stuff. */
6992 if (frame_garbaged
&& do_display
)
6994 clear_waiting_for_input ();
6995 redisplay_preserve_echo_area (15);
6997 set_waiting_for_input (&timeout
);
7000 if (read_kbd
&& detect_input_pending ())
7003 FD_ZERO (&waitchannels
);
7006 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7011 /* Make C-g and alarm signals set flags again */
7012 clear_waiting_for_input ();
7014 /* If we woke up due to SIGWINCH, actually change size now. */
7015 do_pending_window_change (0);
7017 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7018 /* We waited the full specified time, so return now. */
7023 /* If the system call was interrupted, then go around the
7025 if (xerrno
== EINTR
)
7026 FD_ZERO (&waitchannels
);
7028 error ("select error: %s", emacs_strerror (xerrno
));
7031 /* Check for keyboard input */
7034 && detect_input_pending_run_timers (do_display
))
7036 swallow_events (do_display
);
7037 if (detect_input_pending_run_timers (do_display
))
7041 /* If there is unread keyboard input, also return. */
7043 && requeued_events_pending_p ())
7046 /* If wait_for_cell. check for keyboard input
7047 but don't run any timers.
7048 ??? (It seems wrong to me to check for keyboard
7049 input at all when wait_for_cell, but the code
7050 has been this way since July 1994.
7051 Try changing this after version 19.31.) */
7052 if (! NILP (wait_for_cell
)
7053 && detect_input_pending ())
7055 swallow_events (do_display
);
7056 if (detect_input_pending ())
7060 /* Exit now if the cell we're waiting for became non-nil. */
7061 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7070 #endif /* not subprocesses */
7072 /* The following functions are needed even if async subprocesses are
7073 not supported. Some of them are no-op stubs in that case. */
7075 /* Add DESC to the set of keyboard input descriptors. */
7078 add_keyboard_wait_descriptor (int desc
)
7080 #ifdef subprocesses /* actually means "not MSDOS" */
7081 FD_SET (desc
, &input_wait_mask
);
7082 FD_SET (desc
, &non_process_wait_mask
);
7083 if (desc
> max_input_desc
)
7084 max_input_desc
= desc
;
7088 /* From now on, do not expect DESC to give keyboard input. */
7091 delete_keyboard_wait_descriptor (int desc
)
7095 int lim
= max_input_desc
;
7097 FD_CLR (desc
, &input_wait_mask
);
7098 FD_CLR (desc
, &non_process_wait_mask
);
7100 if (desc
== max_input_desc
)
7101 for (fd
= 0; fd
< lim
; fd
++)
7102 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
7103 max_input_desc
= fd
;
7107 /* Setup coding systems of PROCESS. */
7110 setup_process_coding_systems (Lisp_Object process
)
7113 struct Lisp_Process
*p
= XPROCESS (process
);
7115 int outch
= p
->outfd
;
7116 Lisp_Object coding_system
;
7118 if (inch
< 0 || outch
< 0)
7121 if (!proc_decode_coding_system
[inch
])
7122 proc_decode_coding_system
[inch
]
7123 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
7124 coding_system
= p
->decode_coding_system
;
7125 if (! NILP (p
->filter
))
7127 else if (BUFFERP (p
->buffer
))
7129 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
7130 coding_system
= raw_text_coding_system (coding_system
);
7132 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7134 if (!proc_encode_coding_system
[outch
])
7135 proc_encode_coding_system
[outch
]
7136 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
7137 setup_coding_system (p
->encode_coding_system
,
7138 proc_encode_coding_system
[outch
]);
7142 /* Close all descriptors currently in use for communication
7143 with subprocess. This is used in a newly-forked subprocess
7144 to get rid of irrelevant descriptors. */
7147 close_process_descs (void)
7151 for (i
= 0; i
< MAXDESC
; i
++)
7153 Lisp_Object process
;
7154 process
= chan_process
[i
];
7155 if (!NILP (process
))
7157 int in
= XPROCESS (process
)->infd
;
7158 int out
= XPROCESS (process
)->outfd
;
7161 if (out
>= 0 && in
!= out
)
7168 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7169 doc
: /* Return the (or a) process associated with BUFFER.
7170 BUFFER may be a buffer or the name of one. */)
7171 (register Lisp_Object buffer
)
7174 register Lisp_Object buf
, tail
, proc
;
7176 if (NILP (buffer
)) return Qnil
;
7177 buf
= Fget_buffer (buffer
);
7178 if (NILP (buf
)) return Qnil
;
7180 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7182 proc
= Fcdr (XCAR (tail
));
7183 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
7186 #endif /* subprocesses */
7190 DEFUN ("process-inherit-coding-system-flag",
7191 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7193 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7194 If this flag is t, `buffer-file-coding-system' of the buffer
7195 associated with PROCESS will inherit the coding system used to decode
7196 the process output. */)
7197 (register Lisp_Object process
)
7200 CHECK_PROCESS (process
);
7201 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7203 /* Ignore the argument and return the value of
7204 inherit-process-coding-system. */
7205 return inherit_process_coding_system
? Qt
: Qnil
;
7209 /* Kill all processes associated with `buffer'.
7210 If `buffer' is nil, kill all processes */
7213 kill_buffer_processes (Lisp_Object buffer
)
7216 Lisp_Object tail
, proc
;
7218 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7220 proc
= XCDR (XCAR (tail
));
7222 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7224 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7225 Fdelete_process (proc
);
7226 else if (XPROCESS (proc
)->infd
>= 0)
7227 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7230 #else /* subprocesses */
7231 /* Since we have no subprocesses, this does nothing. */
7232 #endif /* subprocesses */
7235 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
7237 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7238 This is intended for use by asynchronous process output filters and sentinels. */)
7242 return (waiting_for_user_input_p
? Qt
: Qnil
);
7248 /* Stop reading input from keyboard sources. */
7251 hold_keyboard_input (void)
7256 /* Resume reading input from keyboard sources. */
7259 unhold_keyboard_input (void)
7264 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7267 kbd_on_hold_p (void)
7269 return kbd_is_on_hold
;
7273 /* Enumeration of and access to system processes a-la ps(1). */
7275 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7277 doc
: /* Return a list of numerical process IDs of all running processes.
7278 If this functionality is unsupported, return nil.
7280 See `process-attributes' for getting attributes of a process given its ID. */)
7283 return list_system_processes ();
7286 DEFUN ("process-attributes", Fprocess_attributes
,
7287 Sprocess_attributes
, 1, 1, 0,
7288 doc
: /* Return attributes of the process given by its PID, a number.
7290 Value is an alist where each element is a cons cell of the form
7294 If this functionality is unsupported, the value is nil.
7296 See `list-system-processes' for getting a list of all process IDs.
7298 The KEYs of the attributes that this function may return are listed
7299 below, together with the type of the associated VALUE (in parentheses).
7300 Not all platforms support all of these attributes; unsupported
7301 attributes will not appear in the returned alist.
7302 Unless explicitly indicated otherwise, numbers can have either
7303 integer or floating point values.
7305 euid -- Effective user User ID of the process (number)
7306 user -- User name corresponding to euid (string)
7307 egid -- Effective user Group ID of the process (number)
7308 group -- Group name corresponding to egid (string)
7309 comm -- Command name (executable name only) (string)
7310 state -- Process state code, such as "S", "R", or "T" (string)
7311 ppid -- Parent process ID (number)
7312 pgrp -- Process group ID (number)
7313 sess -- Session ID, i.e. process ID of session leader (number)
7314 ttname -- Controlling tty name (string)
7315 tpgid -- ID of foreground process group on the process's tty (number)
7316 minflt -- number of minor page faults (number)
7317 majflt -- number of major page faults (number)
7318 cminflt -- cumulative number of minor page faults (number)
7319 cmajflt -- cumulative number of major page faults (number)
7320 utime -- user time used by the process, in the (HIGH LOW USEC) format
7321 stime -- system time used by the process, in the (HIGH LOW USEC) format
7322 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7323 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7324 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7325 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7326 pri -- priority of the process (number)
7327 nice -- nice value of the process (number)
7328 thcount -- process thread count (number)
7329 start -- time the process started, in the (HIGH LOW USEC) format
7330 vsize -- virtual memory size of the process in KB's (number)
7331 rss -- resident set size of the process in KB's (number)
7332 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7333 pcpu -- percents of CPU time used by the process (floating-point number)
7334 pmem -- percents of total physical memory used by process's resident set
7335 (floating-point number)
7336 args -- command line which invoked the process (string). */)
7339 return system_process_attributes (pid
);
7349 inhibit_sentinels
= 0;
7353 if (! noninteractive
|| initialized
)
7355 signal (SIGCHLD
, sigchld_handler
);
7358 FD_ZERO (&input_wait_mask
);
7359 FD_ZERO (&non_keyboard_wait_mask
);
7360 FD_ZERO (&non_process_wait_mask
);
7361 FD_ZERO (&write_mask
);
7362 max_process_desc
= 0;
7363 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7365 #ifdef NON_BLOCKING_CONNECT
7366 FD_ZERO (&connect_wait_mask
);
7367 num_pending_connects
= 0;
7370 #ifdef ADAPTIVE_READ_BUFFERING
7371 process_output_delay_count
= 0;
7372 process_output_skip
= 0;
7375 /* Don't do this, it caused infinite select loops. The display
7376 method should call add_keyboard_wait_descriptor on stdin if it
7379 FD_SET (0, &input_wait_mask
);
7382 Vprocess_alist
= Qnil
;
7384 deleted_pid_list
= Qnil
;
7386 for (i
= 0; i
< MAXDESC
; i
++)
7388 chan_process
[i
] = Qnil
;
7389 proc_buffered_char
[i
] = -1;
7391 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7392 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7393 #ifdef DATAGRAM_SOCKETS
7394 memset (datagram_address
, 0, sizeof datagram_address
);
7398 Lisp_Object subfeatures
= Qnil
;
7399 const struct socket_options
*sopt
;
7401 #define ADD_SUBFEATURE(key, val) \
7402 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7404 #ifdef NON_BLOCKING_CONNECT
7405 ADD_SUBFEATURE (QCnowait
, Qt
);
7407 #ifdef DATAGRAM_SOCKETS
7408 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7410 #ifdef HAVE_SEQPACKET
7411 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7413 #ifdef HAVE_LOCAL_SOCKETS
7414 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7416 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7418 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7420 #ifdef HAVE_GETSOCKNAME
7421 ADD_SUBFEATURE (QCservice
, Qt
);
7423 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7424 ADD_SUBFEATURE (QCserver
, Qt
);
7427 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7428 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7430 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7433 #if defined (DARWIN_OS)
7434 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7435 processes. As such, we only change the default value. */
7438 const char *release
= get_operating_system_release ();
7439 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7440 && release
[1] == '.')) {
7441 Vprocess_connection_type
= Qnil
;
7445 #endif /* subprocesses */
7450 syms_of_process (void)
7454 Qprocessp
= intern_c_string ("processp");
7455 staticpro (&Qprocessp
);
7456 Qrun
= intern_c_string ("run");
7458 Qstop
= intern_c_string ("stop");
7460 Qsignal
= intern_c_string ("signal");
7461 staticpro (&Qsignal
);
7463 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7466 Qexit = intern_c_string ("exit");
7467 staticpro (&Qexit); */
7469 Qopen
= intern_c_string ("open");
7471 Qclosed
= intern_c_string ("closed");
7472 staticpro (&Qclosed
);
7473 Qconnect
= intern_c_string ("connect");
7474 staticpro (&Qconnect
);
7475 Qfailed
= intern_c_string ("failed");
7476 staticpro (&Qfailed
);
7477 Qlisten
= intern_c_string ("listen");
7478 staticpro (&Qlisten
);
7479 Qlocal
= intern_c_string ("local");
7480 staticpro (&Qlocal
);
7481 Qipv4
= intern_c_string ("ipv4");
7484 Qipv6
= intern_c_string ("ipv6");
7487 Qdatagram
= intern_c_string ("datagram");
7488 staticpro (&Qdatagram
);
7489 Qseqpacket
= intern_c_string ("seqpacket");
7490 staticpro (&Qseqpacket
);
7492 QCport
= intern_c_string (":port");
7493 staticpro (&QCport
);
7494 QCspeed
= intern_c_string (":speed");
7495 staticpro (&QCspeed
);
7496 QCprocess
= intern_c_string (":process");
7497 staticpro (&QCprocess
);
7499 QCbytesize
= intern_c_string (":bytesize");
7500 staticpro (&QCbytesize
);
7501 QCstopbits
= intern_c_string (":stopbits");
7502 staticpro (&QCstopbits
);
7503 QCparity
= intern_c_string (":parity");
7504 staticpro (&QCparity
);
7505 Qodd
= intern_c_string ("odd");
7507 Qeven
= intern_c_string ("even");
7509 QCflowcontrol
= intern_c_string (":flowcontrol");
7510 staticpro (&QCflowcontrol
);
7511 Qhw
= intern_c_string ("hw");
7513 Qsw
= intern_c_string ("sw");
7515 QCsummary
= intern_c_string (":summary");
7516 staticpro (&QCsummary
);
7518 Qreal
= intern_c_string ("real");
7520 Qnetwork
= intern_c_string ("network");
7521 staticpro (&Qnetwork
);
7522 Qserial
= intern_c_string ("serial");
7523 staticpro (&Qserial
);
7524 QCbuffer
= intern_c_string (":buffer");
7525 staticpro (&QCbuffer
);
7526 QChost
= intern_c_string (":host");
7527 staticpro (&QChost
);
7528 QCservice
= intern_c_string (":service");
7529 staticpro (&QCservice
);
7530 QClocal
= intern_c_string (":local");
7531 staticpro (&QClocal
);
7532 QCremote
= intern_c_string (":remote");
7533 staticpro (&QCremote
);
7534 QCcoding
= intern_c_string (":coding");
7535 staticpro (&QCcoding
);
7536 QCserver
= intern_c_string (":server");
7537 staticpro (&QCserver
);
7538 QCnowait
= intern_c_string (":nowait");
7539 staticpro (&QCnowait
);
7540 QCsentinel
= intern_c_string (":sentinel");
7541 staticpro (&QCsentinel
);
7542 QClog
= intern_c_string (":log");
7544 QCnoquery
= intern_c_string (":noquery");
7545 staticpro (&QCnoquery
);
7546 QCstop
= intern_c_string (":stop");
7547 staticpro (&QCstop
);
7548 QCoptions
= intern_c_string (":options");
7549 staticpro (&QCoptions
);
7550 QCplist
= intern_c_string (":plist");
7551 staticpro (&QCplist
);
7553 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7554 staticpro (&Qlast_nonmenu_event
);
7556 staticpro (&Vprocess_alist
);
7558 staticpro (&deleted_pid_list
);
7561 #endif /* subprocesses */
7563 QCname
= intern_c_string (":name");
7564 staticpro (&QCname
);
7565 QCtype
= intern_c_string (":type");
7566 staticpro (&QCtype
);
7568 Qeuid
= intern_c_string ("euid");
7570 Qegid
= intern_c_string ("egid");
7572 Quser
= intern_c_string ("user");
7574 Qgroup
= intern_c_string ("group");
7575 staticpro (&Qgroup
);
7576 Qcomm
= intern_c_string ("comm");
7578 Qstate
= intern_c_string ("state");
7579 staticpro (&Qstate
);
7580 Qppid
= intern_c_string ("ppid");
7582 Qpgrp
= intern_c_string ("pgrp");
7584 Qsess
= intern_c_string ("sess");
7586 Qttname
= intern_c_string ("ttname");
7587 staticpro (&Qttname
);
7588 Qtpgid
= intern_c_string ("tpgid");
7589 staticpro (&Qtpgid
);
7590 Qminflt
= intern_c_string ("minflt");
7591 staticpro (&Qminflt
);
7592 Qmajflt
= intern_c_string ("majflt");
7593 staticpro (&Qmajflt
);
7594 Qcminflt
= intern_c_string ("cminflt");
7595 staticpro (&Qcminflt
);
7596 Qcmajflt
= intern_c_string ("cmajflt");
7597 staticpro (&Qcmajflt
);
7598 Qutime
= intern_c_string ("utime");
7599 staticpro (&Qutime
);
7600 Qstime
= intern_c_string ("stime");
7601 staticpro (&Qstime
);
7602 Qtime
= intern_c_string ("time");
7604 Qcutime
= intern_c_string ("cutime");
7605 staticpro (&Qcutime
);
7606 Qcstime
= intern_c_string ("cstime");
7607 staticpro (&Qcstime
);
7608 Qctime
= intern_c_string ("ctime");
7609 staticpro (&Qctime
);
7610 Qpri
= intern_c_string ("pri");
7612 Qnice
= intern_c_string ("nice");
7614 Qthcount
= intern_c_string ("thcount");
7615 staticpro (&Qthcount
);
7616 Qstart
= intern_c_string ("start");
7617 staticpro (&Qstart
);
7618 Qvsize
= intern_c_string ("vsize");
7619 staticpro (&Qvsize
);
7620 Qrss
= intern_c_string ("rss");
7622 Qetime
= intern_c_string ("etime");
7623 staticpro (&Qetime
);
7624 Qpcpu
= intern_c_string ("pcpu");
7626 Qpmem
= intern_c_string ("pmem");
7628 Qargs
= intern_c_string ("args");
7631 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7632 doc
: /* *Non-nil means delete processes immediately when they exit.
7633 A value of nil means don't delete them until `list-processes' is run. */);
7635 delete_exited_processes
= 1;
7638 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7639 doc
: /* Control type of device used to communicate with subprocesses.
7640 Values are nil to use a pipe, or t or `pty' to use a pty.
7641 The value has no effect if the system has no ptys or if all ptys are busy:
7642 then a pipe is used in any case.
7643 The value takes effect when `start-process' is called. */);
7644 Vprocess_connection_type
= Qt
;
7646 #ifdef ADAPTIVE_READ_BUFFERING
7647 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7648 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7649 On some systems, when Emacs reads the output from a subprocess, the output data
7650 is read in very small blocks, potentially resulting in very poor performance.
7651 This behavior can be remedied to some extent by setting this variable to a
7652 non-nil value, as it will automatically delay reading from such processes, to
7653 allow them to produce more output before Emacs tries to read it.
7654 If the value is t, the delay is reset after each write to the process; any other
7655 non-nil value means that the delay is not reset on write.
7656 The variable takes effect when `start-process' is called. */);
7657 Vprocess_adaptive_read_buffering
= Qt
;
7660 defsubr (&Sprocessp
);
7661 defsubr (&Sget_process
);
7662 defsubr (&Sdelete_process
);
7663 defsubr (&Sprocess_status
);
7664 defsubr (&Sprocess_exit_status
);
7665 defsubr (&Sprocess_id
);
7666 defsubr (&Sprocess_name
);
7667 defsubr (&Sprocess_tty_name
);
7668 defsubr (&Sprocess_command
);
7669 defsubr (&Sset_process_buffer
);
7670 defsubr (&Sprocess_buffer
);
7671 defsubr (&Sprocess_mark
);
7672 defsubr (&Sset_process_filter
);
7673 defsubr (&Sprocess_filter
);
7674 defsubr (&Sset_process_sentinel
);
7675 defsubr (&Sprocess_sentinel
);
7676 defsubr (&Sset_process_window_size
);
7677 defsubr (&Sset_process_inherit_coding_system_flag
);
7678 defsubr (&Sset_process_query_on_exit_flag
);
7679 defsubr (&Sprocess_query_on_exit_flag
);
7680 defsubr (&Sprocess_contact
);
7681 defsubr (&Sprocess_plist
);
7682 defsubr (&Sset_process_plist
);
7683 defsubr (&Slist_processes
);
7684 defsubr (&Sprocess_list
);
7685 defsubr (&Sstart_process
);
7686 defsubr (&Sserial_process_configure
);
7687 defsubr (&Smake_serial_process
);
7688 defsubr (&Sset_network_process_option
);
7689 defsubr (&Smake_network_process
);
7690 defsubr (&Sformat_network_address
);
7691 #if defined(HAVE_NET_IF_H)
7693 defsubr (&Snetwork_interface_list
);
7695 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7696 defsubr (&Snetwork_interface_info
);
7698 #endif /* defined(HAVE_NET_IF_H) */
7699 #ifdef DATAGRAM_SOCKETS
7700 defsubr (&Sprocess_datagram_address
);
7701 defsubr (&Sset_process_datagram_address
);
7703 defsubr (&Saccept_process_output
);
7704 defsubr (&Sprocess_send_region
);
7705 defsubr (&Sprocess_send_string
);
7706 defsubr (&Sinterrupt_process
);
7707 defsubr (&Skill_process
);
7708 defsubr (&Squit_process
);
7709 defsubr (&Sstop_process
);
7710 defsubr (&Scontinue_process
);
7711 defsubr (&Sprocess_running_child_p
);
7712 defsubr (&Sprocess_send_eof
);
7713 defsubr (&Ssignal_process
);
7714 defsubr (&Swaiting_for_user_input_p
);
7715 defsubr (&Sprocess_type
);
7716 defsubr (&Sset_process_coding_system
);
7717 defsubr (&Sprocess_coding_system
);
7718 defsubr (&Sset_process_filter_multibyte
);
7719 defsubr (&Sprocess_filter_multibyte_p
);
7721 #endif /* subprocesses */
7723 defsubr (&Sget_buffer_process
);
7724 defsubr (&Sprocess_inherit_coding_system_flag
);
7725 defsubr (&Slist_system_processes
);
7726 defsubr (&Sprocess_attributes
);