1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
37 /* Only MS-DOS does not define `subprocesses'. */
40 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <arpa/inet.h>
45 /* Are local (unix) sockets supported? */
46 #if defined (HAVE_SYS_UN_H)
47 #if !defined (AF_LOCAL) && defined (AF_UNIX)
48 #define AF_LOCAL AF_UNIX
51 #define HAVE_LOCAL_SOCKETS
56 #include <sys/ioctl.h>
57 #if defined(HAVE_NET_IF_H)
59 #endif /* HAVE_NET_IF_H */
61 #if defined(HAVE_IFADDRS_H)
62 /* Must be after net/if.h */
65 /* We only use structs from this header when we use getifaddrs. */
66 #if defined(HAVE_NET_IF_DL_H)
67 #include <net/if_dl.h>
77 #include <netinet/in.h>
78 #include <arpa/nameser.h>
90 #endif /* subprocesses */
97 #include "character.h"
101 #include "termhooks.h"
102 #include "termopts.h"
103 #include "commands.h"
104 #include "keyboard.h"
105 #include "blockinput.h"
106 #include "dispextern.h"
107 #include "composite.h"
109 #include "sysselect.h"
110 #include "syssignal.h"
116 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
117 #include "xgselect.h"
123 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
124 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
125 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
126 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
127 Lisp_Object QCname
, QCtype
;
129 /* Non-zero if keyboard input is on hold, zero otherwise. */
131 static int kbd_is_on_hold
;
133 /* Nonzero means don't run process sentinels. This is used
135 int inhibit_sentinels
;
139 Lisp_Object Qprocessp
;
140 static Lisp_Object Qrun
, Qstop
, Qsignal
;
141 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
143 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
144 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
146 static Lisp_Object Qipv6
;
148 static Lisp_Object QCport
, QCprocess
;
150 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
151 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
152 static Lisp_Object QCbuffer
, QChost
, QCservice
;
153 static Lisp_Object QClocal
, QCremote
, QCcoding
;
154 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
155 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
156 static Lisp_Object Qlast_nonmenu_event
;
157 /* QCfamily is declared and initialized in xfaces.c,
158 QCfilter in keyboard.c. */
159 extern Lisp_Object QCfamily
, QCfilter
;
161 /* Qexit is declared and initialized in eval.c. */
163 /* QCfamily is defined in xfaces.c. */
164 extern Lisp_Object QCfamily
;
165 /* QCfilter is defined in keyboard.c. */
166 extern Lisp_Object QCfilter
;
168 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
169 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
170 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
171 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
177 /* Number of events of change of status of a process. */
178 static int process_tick
;
179 /* Number of events for which the user or sentinel has been notified. */
180 static int update_tick
;
182 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
184 /* Only W32 has this, it really means that select can't take write mask. */
185 #ifdef BROKEN_NON_BLOCKING_CONNECT
186 #undef NON_BLOCKING_CONNECT
187 #define SELECT_CANT_DO_WRITE_MASK
189 #ifndef NON_BLOCKING_CONNECT
191 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
192 #if defined (O_NONBLOCK) || defined (O_NDELAY)
193 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
194 #define NON_BLOCKING_CONNECT
195 #endif /* EWOULDBLOCK || EINPROGRESS */
196 #endif /* O_NONBLOCK || O_NDELAY */
197 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
198 #endif /* HAVE_SELECT */
199 #endif /* NON_BLOCKING_CONNECT */
200 #endif /* BROKEN_NON_BLOCKING_CONNECT */
202 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
203 this system. We need to read full packets, so we need a
204 "non-destructive" select. So we require either native select,
205 or emulation of select using FIONREAD. */
207 #ifdef BROKEN_DATAGRAM_SOCKETS
208 #undef DATAGRAM_SOCKETS
210 #ifndef DATAGRAM_SOCKETS
211 #if defined (HAVE_SELECT) || defined (FIONREAD)
212 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
213 #define DATAGRAM_SOCKETS
214 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
215 #endif /* HAVE_SELECT || FIONREAD */
216 #endif /* DATAGRAM_SOCKETS */
217 #endif /* BROKEN_DATAGRAM_SOCKETS */
219 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
220 # define HAVE_SEQPACKET
223 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
224 #ifdef EMACS_HAS_USECS
225 #define ADAPTIVE_READ_BUFFERING
229 #ifdef ADAPTIVE_READ_BUFFERING
230 #define READ_OUTPUT_DELAY_INCREMENT 10000
231 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
232 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
234 /* Number of processes which have a non-zero read_output_delay,
235 and therefore might be delayed for adaptive read buffering. */
237 static int process_output_delay_count
;
239 /* Non-zero if any process has non-nil read_output_skip. */
241 static int process_output_skip
;
244 #define process_output_delay_count 0
247 static Lisp_Object
Fget_process (Lisp_Object
);
248 static void create_process (Lisp_Object
, char **, Lisp_Object
);
250 static int keyboard_bit_set (SELECT_TYPE
*);
252 static void deactivate_process (Lisp_Object
);
253 static void status_notify (struct Lisp_Process
*);
254 static int read_process_output (Lisp_Object
, int);
255 static void create_pty (Lisp_Object
);
257 /* If we support a window system, turn on the code to poll periodically
258 to detect C-g. It isn't actually used when doing interrupt input. */
259 #if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS)
260 #define POLL_FOR_INPUT
263 static Lisp_Object
get_process (register Lisp_Object name
);
264 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
266 /* Mask of bits indicating the descriptors that we wait for input on. */
268 static SELECT_TYPE input_wait_mask
;
270 /* Mask that excludes keyboard input descriptor(s). */
272 static SELECT_TYPE non_keyboard_wait_mask
;
274 /* Mask that excludes process input descriptor(s). */
276 static SELECT_TYPE non_process_wait_mask
;
278 /* Mask for selecting for write. */
280 static SELECT_TYPE write_mask
;
282 #ifdef NON_BLOCKING_CONNECT
283 /* Mask of bits indicating the descriptors that we wait for connect to
284 complete on. Once they complete, they are removed from this mask
285 and added to the input_wait_mask and non_keyboard_wait_mask. */
287 static SELECT_TYPE connect_wait_mask
;
289 /* Number of bits set in connect_wait_mask. */
290 static int num_pending_connects
;
291 #endif /* NON_BLOCKING_CONNECT */
293 /* The largest descriptor currently in use for a process object. */
294 static int max_process_desc
;
296 /* The largest descriptor currently in use for input. */
297 static int max_input_desc
;
299 /* Indexed by descriptor, gives the process (if any) for that descriptor */
300 static Lisp_Object chan_process
[MAXDESC
];
302 /* Alist of elements (NAME . PROCESS) */
303 static Lisp_Object Vprocess_alist
;
305 /* Buffered-ahead input char from process, indexed by channel.
306 -1 means empty (no char is buffered).
307 Used on sys V where the only way to tell if there is any
308 output from the process is to read at least one char.
309 Always -1 on systems that support FIONREAD. */
311 static int proc_buffered_char
[MAXDESC
];
313 /* Table of `struct coding-system' for each process. */
314 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
315 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
317 #ifdef DATAGRAM_SOCKETS
318 /* Table of `partner address' for datagram sockets. */
319 static struct sockaddr_and_len
{
322 } datagram_address
[MAXDESC
];
323 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
324 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
326 #define DATAGRAM_CHAN_P(chan) (0)
327 #define DATAGRAM_CONN_P(proc) (0)
330 /* Maximum number of bytes to send to a pty without an eof. */
331 static int pty_max_bytes
;
335 static struct fd_callback_data
341 int condition
; /* mask of the defines above. */
342 } fd_callback_info
[MAXDESC
];
345 /* Add a file descriptor FD to be monitored for when read is possible.
346 When read is possible, call FUNC with argument DATA. */
349 add_read_fd (int fd
, fd_callback func
, void *data
)
351 xassert (fd
< MAXDESC
);
352 add_keyboard_wait_descriptor (fd
);
354 fd_callback_info
[fd
].func
= func
;
355 fd_callback_info
[fd
].data
= data
;
356 fd_callback_info
[fd
].condition
|= FOR_READ
;
359 /* Stop monitoring file descriptor FD for when read is possible. */
362 delete_read_fd (int fd
)
364 xassert (fd
< MAXDESC
);
365 delete_keyboard_wait_descriptor (fd
);
367 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
368 if (fd_callback_info
[fd
].condition
== 0)
370 fd_callback_info
[fd
].func
= 0;
371 fd_callback_info
[fd
].data
= 0;
375 /* Add a file descriptor FD to be monitored for when write is possible.
376 When write is possible, call FUNC with argument DATA. */
379 add_write_fd (int fd
, fd_callback func
, void *data
)
381 xassert (fd
< MAXDESC
);
382 FD_SET (fd
, &write_mask
);
383 if (fd
> max_input_desc
)
386 fd_callback_info
[fd
].func
= func
;
387 fd_callback_info
[fd
].data
= data
;
388 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
391 /* Stop monitoring file descriptor FD for when write is possible. */
394 delete_write_fd (int fd
)
396 int lim
= max_input_desc
;
398 xassert (fd
< MAXDESC
);
399 FD_CLR (fd
, &write_mask
);
400 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
401 if (fd_callback_info
[fd
].condition
== 0)
403 fd_callback_info
[fd
].func
= 0;
404 fd_callback_info
[fd
].data
= 0;
406 if (fd
== max_input_desc
)
407 for (fd
= lim
; fd
>= 0; fd
--)
408 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
418 /* Compute the Lisp form of the process status, p->status, from
419 the numeric status that was returned by `wait'. */
421 static Lisp_Object
status_convert (int);
424 update_status (struct Lisp_Process
*p
)
426 eassert (p
->raw_status_new
);
427 p
->status
= status_convert (p
->raw_status
);
428 p
->raw_status_new
= 0;
431 /* Convert a process status word in Unix format to
432 the list that we use internally. */
435 status_convert (int w
)
438 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
439 else if (WIFEXITED (w
))
440 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
441 WCOREDUMP (w
) ? Qt
: Qnil
));
442 else if (WIFSIGNALED (w
))
443 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
444 WCOREDUMP (w
) ? Qt
: Qnil
));
449 /* Given a status-list, extract the three pieces of information
450 and store them individually through the three pointers. */
453 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
467 *code
= XFASTINT (XCAR (tem
));
469 *coredump
= !NILP (tem
);
473 /* Return a string describing a process status list. */
476 status_message (struct Lisp_Process
*p
)
478 Lisp_Object status
= p
->status
;
481 Lisp_Object string
, string2
;
483 decode_status (status
, &symbol
, &code
, &coredump
);
485 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
488 synchronize_system_messages_locale ();
489 signame
= strsignal (code
);
491 string
= build_string ("unknown");
496 string
= make_unibyte_string (signame
, strlen (signame
));
497 if (! NILP (Vlocale_coding_system
))
498 string
= (code_convert_string_norecord
499 (string
, Vlocale_coding_system
, 0));
500 c1
= STRING_CHAR (SDATA (string
));
503 Faset (string
, make_number (0), make_number (c2
));
505 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
506 return concat2 (string
, string2
);
508 else if (EQ (symbol
, Qexit
))
511 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
513 return build_string ("finished\n");
514 string
= Fnumber_to_string (make_number (code
));
515 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
516 return concat3 (build_string ("exited abnormally with code "),
519 else if (EQ (symbol
, Qfailed
))
521 string
= Fnumber_to_string (make_number (code
));
522 string2
= build_string ("\n");
523 return concat3 (build_string ("failed with code "),
527 return Fcopy_sequence (Fsymbol_name (symbol
));
532 /* The file name of the pty opened by allocate_pty. */
533 static char pty_name
[24];
535 /* Open an available pty, returning a file descriptor.
536 Return -1 on failure.
537 The file name of the terminal corresponding to the pty
538 is left in the variable pty_name. */
549 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
550 for (i
= 0; i
< 16; i
++)
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;
571 if (stat (pty_name
, &stb
) < 0)
574 if (failed_count
>= 3)
581 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
583 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
586 #endif /* no PTY_OPEN */
590 /* check to make certain that both sides are available
591 this avoids a nasty yet stupid bug in rlogins */
592 #ifdef PTY_TTY_NAME_SPRINTF
595 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
596 #endif /* no PTY_TTY_NAME_SPRINTF */
597 if (access (pty_name
, 6) != 0)
612 #endif /* HAVE_PTYS */
615 make_process (Lisp_Object name
)
617 register Lisp_Object val
, tem
, name1
;
618 register struct Lisp_Process
*p
;
622 p
= allocate_process ();
630 p
->raw_status_new
= 0;
632 p
->mark
= Fmake_marker ();
633 p
->kill_without_query
= 0;
635 #ifdef ADAPTIVE_READ_BUFFERING
636 p
->adaptive_read_buffering
= 0;
637 p
->read_output_delay
= 0;
638 p
->read_output_skip
= 0;
642 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
643 p
->gnutls_log_level
= 0;
647 /* If name is already in use, modify it until it is unused. */
652 tem
= Fget_process (name1
);
653 if (NILP (tem
)) break;
654 sprintf (suffix
, "<%d>", i
);
655 name1
= concat2 (name
, build_string (suffix
));
659 XSETPROCESS (val
, p
);
660 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
665 remove_process (register Lisp_Object proc
)
667 register Lisp_Object pair
;
669 pair
= Frassq (proc
, Vprocess_alist
);
670 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
672 deactivate_process (proc
);
676 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
677 doc
: /* Return t if OBJECT is a process. */)
680 return PROCESSP (object
) ? Qt
: Qnil
;
683 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
684 doc
: /* Return the process named NAME, or nil if there is none. */)
685 (register Lisp_Object name
)
690 return Fcdr (Fassoc (name
, Vprocess_alist
));
693 /* This is how commands for the user decode process arguments. It
694 accepts a process, a process name, a buffer, a buffer name, or nil.
695 Buffers denote the first process in the buffer, and nil denotes the
699 get_process (register Lisp_Object name
)
701 register Lisp_Object proc
, obj
;
704 obj
= Fget_process (name
);
706 obj
= Fget_buffer (name
);
708 error ("Process %s does not exist", SDATA (name
));
710 else if (NILP (name
))
711 obj
= Fcurrent_buffer ();
715 /* Now obj should be either a buffer object or a process object.
719 proc
= Fget_buffer_process (obj
);
721 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
733 /* Fdelete_process promises to immediately forget about the process, but in
734 reality, Emacs needs to remember those processes until they have been
735 treated by sigchld_handler; otherwise this handler would consider the
736 process as being synchronous and say that the synchronous process is
738 static Lisp_Object deleted_pid_list
;
741 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
742 doc
: /* Delete PROCESS: kill it and forget about it immediately.
743 PROCESS may be a process, a buffer, the name of a process or buffer, or
744 nil, indicating the current buffer's process. */)
745 (register Lisp_Object process
)
747 register struct Lisp_Process
*p
;
749 process
= get_process (process
);
750 p
= XPROCESS (process
);
752 p
->raw_status_new
= 0;
753 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
755 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
756 p
->tick
= ++process_tick
;
758 redisplay_preserve_echo_area (13);
760 else if (p
->infd
>= 0)
764 /* Assignment to EMACS_INT stops GCC whining about limited range
766 EMACS_INT pid
= p
->pid
;
768 /* No problem storing the pid here, as it is still in Vprocess_alist. */
769 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
770 /* GC treated elements set to nil. */
771 Fdelq (Qnil
, deleted_pid_list
));
772 /* If the process has already signaled, remove it from the list. */
773 if (p
->raw_status_new
)
776 if (CONSP (p
->status
))
777 symbol
= XCAR (p
->status
);
778 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
780 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
784 Fkill_process (process
, Qnil
);
785 /* Do this now, since remove_process will make sigchld_handler do nothing. */
787 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
788 p
->tick
= ++process_tick
;
790 redisplay_preserve_echo_area (13);
793 remove_process (process
);
797 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
798 doc
: /* Return the status of PROCESS.
799 The returned value is one of the following symbols:
800 run -- for a process that is running.
801 stop -- for a process stopped but continuable.
802 exit -- for a process that has exited.
803 signal -- for a process that has got a fatal signal.
804 open -- for a network stream connection that is open.
805 listen -- for a network stream server that is listening.
806 closed -- for a network stream connection that is closed.
807 connect -- when waiting for a non-blocking connection to complete.
808 failed -- when a non-blocking connection has failed.
809 nil -- if arg is a process name and no such process exists.
810 PROCESS may be a process, a buffer, the name of a process, or
811 nil, indicating the current buffer's process. */)
812 (register Lisp_Object process
)
814 register struct Lisp_Process
*p
;
815 register Lisp_Object status
;
817 if (STRINGP (process
))
818 process
= Fget_process (process
);
820 process
= get_process (process
);
825 p
= XPROCESS (process
);
826 if (p
->raw_status_new
)
830 status
= XCAR (status
);
831 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
833 if (EQ (status
, Qexit
))
835 else if (EQ (p
->command
, Qt
))
837 else if (EQ (status
, Qrun
))
843 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
845 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
846 If PROCESS has not yet exited or died, return 0. */)
847 (register Lisp_Object process
)
849 CHECK_PROCESS (process
);
850 if (XPROCESS (process
)->raw_status_new
)
851 update_status (XPROCESS (process
));
852 if (CONSP (XPROCESS (process
)->status
))
853 return XCAR (XCDR (XPROCESS (process
)->status
));
854 return make_number (0);
857 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
858 doc
: /* Return the process id of PROCESS.
859 This is the pid of the external process which PROCESS uses or talks to.
860 For a network connection, this value is nil. */)
861 (register Lisp_Object process
)
863 /* Assignment to EMACS_INT stops GCC whining about limited range of
867 CHECK_PROCESS (process
);
868 pid
= XPROCESS (process
)->pid
;
869 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
872 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
873 doc
: /* Return the name of PROCESS, as a string.
874 This is the name of the program invoked in PROCESS,
875 possibly modified to make it unique among process names. */)
876 (register Lisp_Object process
)
878 CHECK_PROCESS (process
);
879 return XPROCESS (process
)->name
;
882 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
883 doc
: /* Return the command that was executed to start PROCESS.
884 This is a list of strings, the first string being the program executed
885 and the rest of the strings being the arguments given to it.
886 For a network or serial process, this is nil (process is running) or t
887 \(process is stopped). */)
888 (register Lisp_Object process
)
890 CHECK_PROCESS (process
);
891 return XPROCESS (process
)->command
;
894 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
895 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
896 This is the terminal that the process itself reads and writes on,
897 not the name of the pty that Emacs uses to talk with that terminal. */)
898 (register Lisp_Object process
)
900 CHECK_PROCESS (process
);
901 return XPROCESS (process
)->tty_name
;
904 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
906 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
908 (register Lisp_Object process
, Lisp_Object buffer
)
910 struct Lisp_Process
*p
;
912 CHECK_PROCESS (process
);
914 CHECK_BUFFER (buffer
);
915 p
= XPROCESS (process
);
917 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
918 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
919 setup_process_coding_systems (process
);
923 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
925 doc
: /* Return the buffer PROCESS is associated with.
926 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
927 (register Lisp_Object process
)
929 CHECK_PROCESS (process
);
930 return XPROCESS (process
)->buffer
;
933 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
935 doc
: /* Return the marker for the end of the last output from PROCESS. */)
936 (register Lisp_Object process
)
938 CHECK_PROCESS (process
);
939 return XPROCESS (process
)->mark
;
942 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
944 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
945 A value of t means stop accepting output from the process.
947 When a process has a filter, its buffer is not used for output.
948 Instead, each time it does output, the entire string of output is
949 passed to the filter.
951 The filter gets two arguments: the process and the string of output.
952 The string argument is normally a multibyte string, except:
953 - if the process' input coding system is no-conversion or raw-text,
954 it is a unibyte string (the non-converted input), or else
955 - if `default-enable-multibyte-characters' is nil, it is a unibyte
956 string (the result of converting the decoded input multibyte
957 string to unibyte with `string-make-unibyte'). */)
958 (register Lisp_Object process
, Lisp_Object filter
)
960 struct Lisp_Process
*p
;
962 CHECK_PROCESS (process
);
963 p
= XPROCESS (process
);
965 /* Don't signal an error if the process' input file descriptor
966 is closed. This could make debugging Lisp more difficult,
967 for example when doing something like
969 (setq process (start-process ...))
971 (set-process-filter process ...) */
975 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
977 FD_CLR (p
->infd
, &input_wait_mask
);
978 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
980 else if (EQ (p
->filter
, Qt
)
981 /* Network or serial process not stopped: */
982 && !EQ (p
->command
, Qt
))
984 FD_SET (p
->infd
, &input_wait_mask
);
985 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
990 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
991 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
992 setup_process_coding_systems (process
);
996 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
998 doc
: /* Returns the filter function of PROCESS; nil if none.
999 See `set-process-filter' for more info on filter functions. */)
1000 (register Lisp_Object process
)
1002 CHECK_PROCESS (process
);
1003 return XPROCESS (process
)->filter
;
1006 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1008 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1009 The sentinel is called as a function when the process changes state.
1010 It gets two arguments: the process, and a string describing the change. */)
1011 (register Lisp_Object process
, Lisp_Object sentinel
)
1013 struct Lisp_Process
*p
;
1015 CHECK_PROCESS (process
);
1016 p
= XPROCESS (process
);
1018 p
->sentinel
= sentinel
;
1019 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1020 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1024 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1026 doc
: /* Return the sentinel of PROCESS; nil if none.
1027 See `set-process-sentinel' for more info on sentinels. */)
1028 (register Lisp_Object process
)
1030 CHECK_PROCESS (process
);
1031 return XPROCESS (process
)->sentinel
;
1034 DEFUN ("set-process-window-size", Fset_process_window_size
,
1035 Sset_process_window_size
, 3, 3, 0,
1036 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1037 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1039 CHECK_PROCESS (process
);
1040 CHECK_NATNUM (height
);
1041 CHECK_NATNUM (width
);
1043 if (XPROCESS (process
)->infd
< 0
1044 || set_window_size (XPROCESS (process
)->infd
,
1045 XINT (height
), XINT (width
)) <= 0)
1051 DEFUN ("set-process-inherit-coding-system-flag",
1052 Fset_process_inherit_coding_system_flag
,
1053 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1054 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1055 If the second argument FLAG is non-nil, then the variable
1056 `buffer-file-coding-system' of the buffer associated with PROCESS
1057 will be bound to the value of the coding system used to decode
1060 This is useful when the coding system specified for the process buffer
1061 leaves either the character code conversion or the end-of-line conversion
1062 unspecified, or if the coding system used to decode the process output
1063 is more appropriate for saving the process buffer.
1065 Binding the variable `inherit-process-coding-system' to non-nil before
1066 starting the process is an alternative way of setting the inherit flag
1067 for the process which will run. */)
1068 (register Lisp_Object process
, Lisp_Object flag
)
1070 CHECK_PROCESS (process
);
1071 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1075 DEFUN ("set-process-query-on-exit-flag",
1076 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1078 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1079 If the second argument FLAG is non-nil, Emacs will query the user before
1080 exiting or killing a buffer if PROCESS is running. */)
1081 (register Lisp_Object process
, Lisp_Object flag
)
1083 CHECK_PROCESS (process
);
1084 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1088 DEFUN ("process-query-on-exit-flag",
1089 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1091 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1092 (register Lisp_Object process
)
1094 CHECK_PROCESS (process
);
1095 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1098 #ifdef DATAGRAM_SOCKETS
1099 static Lisp_Object
Fprocess_datagram_address (Lisp_Object
);
1102 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1104 doc
: /* Return the contact info of PROCESS; t for a real child.
1105 For a network or serial connection, the value depends on the optional
1106 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1107 SERVICE) for a network connection or (PORT SPEED) for a serial
1108 connection. If KEY is t, the complete contact information for the
1109 connection is returned, else the specific value for the keyword KEY is
1110 returned. See `make-network-process' or `make-serial-process' for a
1111 list of keywords. */)
1112 (register Lisp_Object process
, Lisp_Object key
)
1114 Lisp_Object contact
;
1116 CHECK_PROCESS (process
);
1117 contact
= XPROCESS (process
)->childp
;
1119 #ifdef DATAGRAM_SOCKETS
1120 if (DATAGRAM_CONN_P (process
)
1121 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1122 contact
= Fplist_put (contact
, QCremote
,
1123 Fprocess_datagram_address (process
));
1126 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1128 if (NILP (key
) && NETCONN_P (process
))
1129 return Fcons (Fplist_get (contact
, QChost
),
1130 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1131 if (NILP (key
) && SERIALCONN_P (process
))
1132 return Fcons (Fplist_get (contact
, QCport
),
1133 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1134 return Fplist_get (contact
, key
);
1137 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1139 doc
: /* Return the plist of PROCESS. */)
1140 (register Lisp_Object process
)
1142 CHECK_PROCESS (process
);
1143 return XPROCESS (process
)->plist
;
1146 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1148 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1149 (register Lisp_Object process
, Lisp_Object plist
)
1151 CHECK_PROCESS (process
);
1154 XPROCESS (process
)->plist
= plist
;
1158 #if 0 /* Turned off because we don't currently record this info
1159 in the process. Perhaps add it. */
1160 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1161 doc
: /* Return the connection type of PROCESS.
1162 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1163 a socket connection. */)
1164 (Lisp_Object process
)
1166 return XPROCESS (process
)->type
;
1170 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1171 doc
: /* Return the connection type of PROCESS.
1172 The value is either the symbol `real', `network', or `serial'.
1173 PROCESS may be a process, a buffer, the name of a process or buffer, or
1174 nil, indicating the current buffer's process. */)
1175 (Lisp_Object process
)
1178 proc
= get_process (process
);
1179 return XPROCESS (proc
)->type
;
1182 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1184 doc
: /* Convert network ADDRESS from internal format to a string.
1185 A 4 or 5 element vector represents an IPv4 address (with port number).
1186 An 8 or 9 element vector represents an IPv6 address (with port number).
1187 If optional second argument OMIT-PORT is non-nil, don't include a port
1188 number in the string, even when present in ADDRESS.
1189 Returns nil if format of ADDRESS is invalid. */)
1190 (Lisp_Object address
, Lisp_Object omit_port
)
1195 if (STRINGP (address
)) /* AF_LOCAL */
1198 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1200 register struct Lisp_Vector
*p
= XVECTOR (address
);
1201 EMACS_INT size
= p
->header
.size
;
1202 Lisp_Object args
[10];
1205 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1207 args
[0] = build_string ("%d.%d.%d.%d");
1212 args
[0] = build_string ("%d.%d.%d.%d:%d");
1215 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1217 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1222 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1228 for (i
= 0; i
< nargs
; i
++)
1230 EMACS_INT element
= XINT (p
->contents
[i
]);
1232 if (element
< 0 || element
> 65535)
1235 if (nargs
<= 5 /* IPv4 */
1236 && i
< 4 /* host, not port */
1240 args
[i
+1] = p
->contents
[i
];
1243 return Fformat (nargs
+1, args
);
1246 if (CONSP (address
))
1248 Lisp_Object args
[2];
1249 args
[0] = build_string ("<Family %d>");
1250 args
[1] = Fcar (address
);
1251 return Fformat (2, args
);
1257 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1258 doc
: /* Return a list of all processes. */)
1261 return Fmapcar (Qcdr
, Vprocess_alist
);
1264 /* Starting asynchronous inferior processes. */
1266 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1268 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1269 doc
: /* Start a program in a subprocess. Return the process object for it.
1270 NAME is name for process. It is modified if necessary to make it unique.
1271 BUFFER is the buffer (or buffer name) to associate with the process.
1273 Process output (both standard output and standard error streams) goes
1274 at end of BUFFER, unless you specify an output stream or filter
1275 function to handle the output. BUFFER may also be nil, meaning that
1276 this process is not associated with any buffer.
1278 PROGRAM is the program file name. It is searched for in `exec-path'
1279 (which see). If nil, just associate a pty with the buffer. Remaining
1280 arguments are strings to give program as arguments.
1282 If you want to separate standard output from standard error, invoke
1283 the command through a shell and redirect one of them using the shell
1286 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1287 (ptrdiff_t nargs
, Lisp_Object
*args
)
1289 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1290 register unsigned char **new_argv
;
1292 int count
= SPECPDL_INDEX ();
1296 buffer
= Fget_buffer_create (buffer
);
1298 /* Make sure that the child will be able to chdir to the current
1299 buffer's current directory, or its unhandled equivalent. We
1300 can't just have the child check for an error when it does the
1301 chdir, since it's in a vfork.
1303 We have to GCPRO around this because Fexpand_file_name and
1304 Funhandled_file_name_directory might call a file name handling
1305 function. The argument list is protected by the caller, so all
1306 we really have to worry about is buffer. */
1308 struct gcpro gcpro1
, gcpro2
;
1310 current_dir
= BVAR (current_buffer
, directory
);
1312 GCPRO2 (buffer
, current_dir
);
1314 current_dir
= Funhandled_file_name_directory (current_dir
);
1315 if (NILP (current_dir
))
1316 /* If the file name handler says that current_dir is unreachable, use
1317 a sensible default. */
1318 current_dir
= build_string ("~/");
1319 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1320 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1321 report_file_error ("Setting current directory",
1322 Fcons (BVAR (current_buffer
, directory
), Qnil
));
1328 CHECK_STRING (name
);
1332 if (!NILP (program
))
1333 CHECK_STRING (program
);
1335 proc
= make_process (name
);
1336 /* If an error occurs and we can't start the process, we want to
1337 remove it from the process list. This means that each error
1338 check in create_process doesn't need to call remove_process
1339 itself; it's all taken care of here. */
1340 record_unwind_protect (start_process_unwind
, proc
);
1342 XPROCESS (proc
)->childp
= Qt
;
1343 XPROCESS (proc
)->plist
= Qnil
;
1344 XPROCESS (proc
)->type
= Qreal
;
1345 XPROCESS (proc
)->buffer
= buffer
;
1346 XPROCESS (proc
)->sentinel
= Qnil
;
1347 XPROCESS (proc
)->filter
= Qnil
;
1348 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1351 /* AKA GNUTLS_INITSTAGE(proc). */
1352 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1353 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1356 #ifdef ADAPTIVE_READ_BUFFERING
1357 XPROCESS (proc
)->adaptive_read_buffering
1358 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1359 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1362 /* Make the process marker point into the process buffer (if any). */
1363 if (BUFFERP (buffer
))
1364 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1365 BUF_ZV (XBUFFER (buffer
)),
1366 BUF_ZV_BYTE (XBUFFER (buffer
)));
1369 /* Decide coding systems for communicating with the process. Here
1370 we don't setup the structure coding_system nor pay attention to
1371 unibyte mode. They are done in create_process. */
1373 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1374 Lisp_Object coding_systems
= Qt
;
1375 Lisp_Object val
, *args2
;
1376 struct gcpro gcpro1
, gcpro2
;
1378 val
= Vcoding_system_for_read
;
1381 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1382 args2
[0] = Qstart_process
;
1383 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1384 GCPRO2 (proc
, current_dir
);
1385 if (!NILP (program
))
1386 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1388 if (CONSP (coding_systems
))
1389 val
= XCAR (coding_systems
);
1390 else if (CONSP (Vdefault_process_coding_system
))
1391 val
= XCAR (Vdefault_process_coding_system
);
1393 XPROCESS (proc
)->decode_coding_system
= val
;
1395 val
= Vcoding_system_for_write
;
1398 if (EQ (coding_systems
, Qt
))
1400 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1401 args2
[0] = Qstart_process
;
1402 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1403 GCPRO2 (proc
, current_dir
);
1404 if (!NILP (program
))
1405 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1408 if (CONSP (coding_systems
))
1409 val
= XCDR (coding_systems
);
1410 else if (CONSP (Vdefault_process_coding_system
))
1411 val
= XCDR (Vdefault_process_coding_system
);
1413 XPROCESS (proc
)->encode_coding_system
= val
;
1414 /* Note: At this momemnt, the above coding system may leave
1415 text-conversion or eol-conversion unspecified. They will be
1416 decided after we read output from the process and decode it by
1417 some coding system, or just before we actually send a text to
1422 XPROCESS (proc
)->decoding_buf
= empty_unibyte_string
;
1423 XPROCESS (proc
)->decoding_carryover
= 0;
1424 XPROCESS (proc
)->encoding_buf
= empty_unibyte_string
;
1426 XPROCESS (proc
)->inherit_coding_system_flag
1427 = !(NILP (buffer
) || !inherit_process_coding_system
);
1429 if (!NILP (program
))
1431 /* If program file name is not absolute, search our path for it.
1432 Put the name we will really use in TEM. */
1433 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1434 && !(SCHARS (program
) > 1
1435 && IS_DEVICE_SEP (SREF (program
, 1))))
1437 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1440 GCPRO4 (name
, program
, buffer
, current_dir
);
1441 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1444 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1445 tem
= Fexpand_file_name (tem
, Qnil
);
1449 if (!NILP (Ffile_directory_p (program
)))
1450 error ("Specified program for new process is a directory");
1454 /* If program file name starts with /: for quoting a magic name,
1456 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1457 && SREF (tem
, 1) == ':')
1458 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1461 Lisp_Object arg_encoding
= Qnil
;
1462 struct gcpro gcpro1
;
1465 /* Encode the file name and put it in NEW_ARGV.
1466 That's where the child will use it to execute the program. */
1467 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1469 /* Here we encode arguments by the coding system used for sending
1470 data to the process. We don't support using different coding
1471 systems for encoding arguments and for encoding data sent to the
1474 for (i
= 3; i
< nargs
; i
++)
1476 tem
= Fcons (args
[i
], tem
);
1477 CHECK_STRING (XCAR (tem
));
1478 if (STRING_MULTIBYTE (XCAR (tem
)))
1480 if (NILP (arg_encoding
))
1481 arg_encoding
= (complement_process_encoding_system
1482 (XPROCESS (proc
)->encode_coding_system
));
1484 code_convert_string_norecord
1485 (XCAR (tem
), arg_encoding
, 1));
1492 /* Now that everything is encoded we can collect the strings into
1494 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1495 new_argv
[nargs
- 2] = 0;
1497 for (i
= nargs
- 2; i
-- != 0; )
1499 new_argv
[i
] = SDATA (XCAR (tem
));
1503 create_process (proc
, (char **) new_argv
, current_dir
);
1508 return unbind_to (count
, proc
);
1511 /* This function is the unwind_protect form for Fstart_process. If
1512 PROC doesn't have its pid set, then we know someone has signaled
1513 an error and the process wasn't started successfully, so we should
1514 remove it from the process list. */
1516 start_process_unwind (Lisp_Object proc
)
1518 if (!PROCESSP (proc
))
1521 /* Was PROC started successfully? */
1522 if (XPROCESS (proc
)->pid
== -1)
1523 remove_process (proc
);
1529 create_process_1 (struct atimer
*timer
)
1531 /* Nothing to do. */
1536 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1538 int inchannel
, outchannel
;
1541 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1542 int wait_child_setup
[2];
1546 struct sigaction sigint_action
;
1547 struct sigaction sigquit_action
;
1548 struct sigaction sigpipe_action
;
1550 struct sigaction sighup_action
;
1552 /* Use volatile to protect variables from being clobbered by longjmp. */
1553 volatile int forkin
, forkout
;
1554 volatile int pty_flag
= 0;
1556 extern char **environ
;
1559 inchannel
= outchannel
= -1;
1562 if (!NILP (Vprocess_connection_type
))
1563 outchannel
= inchannel
= allocate_pty ();
1567 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1568 /* On most USG systems it does not work to open the pty's tty here,
1569 then close it and reopen it in the child. */
1571 /* Don't let this terminal become our controlling terminal
1572 (in case we don't have one). */
1573 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1575 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1578 report_file_error ("Opening pty", Qnil
);
1580 forkin
= forkout
= -1;
1581 #endif /* not USG, or USG_SUBTTY_WORKS */
1585 #endif /* HAVE_PTYS */
1590 report_file_error ("Creating pipe", Qnil
);
1596 emacs_close (inchannel
);
1597 emacs_close (forkout
);
1598 report_file_error ("Creating pipe", Qnil
);
1604 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1608 tem
= pipe (wait_child_setup
);
1610 report_file_error ("Creating pipe", Qnil
);
1611 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1613 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1616 emacs_close (wait_child_setup
[0]);
1617 emacs_close (wait_child_setup
[1]);
1618 report_file_error ("Setting file descriptor flags", Qnil
);
1624 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1625 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1628 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1629 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1633 /* Record this as an active process, with its channels.
1634 As a result, child_setup will close Emacs's side of the pipes. */
1635 chan_process
[inchannel
] = process
;
1636 XPROCESS (process
)->infd
= inchannel
;
1637 XPROCESS (process
)->outfd
= outchannel
;
1639 /* Previously we recorded the tty descriptor used in the subprocess.
1640 It was only used for getting the foreground tty process, so now
1641 we just reopen the device (see emacs_get_tty_pgrp) as this is
1642 more portable (see USG_SUBTTY_WORKS above). */
1644 XPROCESS (process
)->pty_flag
= pty_flag
;
1645 XPROCESS (process
)->status
= Qrun
;
1647 /* Delay interrupts until we have a chance to store
1648 the new fork's pid in its process structure */
1649 sigemptyset (&blocked
);
1651 sigaddset (&blocked
, SIGCHLD
);
1653 #ifdef HAVE_WORKING_VFORK
1654 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1655 this sets the parent's signal handlers as well as the child's.
1656 So delay all interrupts whose handlers the child might munge,
1657 and record the current handlers so they can be restored later. */
1658 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1659 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1660 sigaddset (&blocked
, SIGPIPE
); sigaction (SIGPIPE
, 0, &sigpipe_action
);
1662 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1664 #endif /* HAVE_WORKING_VFORK */
1665 pthread_sigmask (SIG_BLOCK
, &blocked
, &procmask
);
1667 FD_SET (inchannel
, &input_wait_mask
);
1668 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1669 if (inchannel
> max_process_desc
)
1670 max_process_desc
= inchannel
;
1672 /* Until we store the proper pid, enable sigchld_handler
1673 to recognize an unknown pid as standing for this process.
1674 It is very important not to let this `marker' value stay
1675 in the table after this function has returned; if it does
1676 it might cause call-process to hang and subsequent asynchronous
1677 processes to get their return values scrambled. */
1678 XPROCESS (process
)->pid
= -1;
1680 /* This must be called after the above line because it may signal an
1682 setup_process_coding_systems (process
);
1687 /* child_setup must clobber environ on systems with true vfork.
1688 Protect it from permanent change. */
1689 char **save_environ
= environ
;
1690 volatile Lisp_Object encoded_current_dir
= ENCODE_FILE (current_dir
);
1695 #endif /* not WINDOWSNT */
1697 int xforkin
= forkin
;
1698 int xforkout
= forkout
;
1700 #if 0 /* This was probably a mistake--it duplicates code later on,
1701 but fails to handle all the cases. */
1702 /* Make sure SIGCHLD is not blocked in the child. */
1703 sigsetmask (SIGEMPTYMASK
);
1706 /* Make the pty be the controlling terminal of the process. */
1708 /* First, disconnect its current controlling terminal. */
1710 /* We tried doing setsid only if pty_flag, but it caused
1711 process_set_signal to fail on SGI when using a pipe. */
1713 /* Make the pty's terminal the controlling terminal. */
1714 if (pty_flag
&& xforkin
>= 0)
1717 /* We ignore the return value
1718 because faith@cs.unc.edu says that is necessary on Linux. */
1719 ioctl (xforkin
, TIOCSCTTY
, 0);
1722 #else /* not HAVE_SETSID */
1724 /* It's very important to call setpgrp here and no time
1725 afterwards. Otherwise, we lose our controlling tty which
1726 is set when we open the pty. */
1729 #endif /* not HAVE_SETSID */
1730 #if defined (LDISC1)
1731 if (pty_flag
&& xforkin
>= 0)
1734 tcgetattr (xforkin
, &t
);
1736 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1737 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1740 #if defined (NTTYDISC) && defined (TIOCSETD)
1741 if (pty_flag
&& xforkin
>= 0)
1743 /* Use new line discipline. */
1744 int ldisc
= NTTYDISC
;
1745 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1750 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1751 can do TIOCSPGRP only to the process's controlling tty. */
1754 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1755 I can't test it since I don't have 4.3. */
1756 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1759 ioctl (j
, TIOCNOTTY
, 0);
1763 /* In order to get a controlling terminal on some versions
1764 of BSD, it is necessary to put the process in pgrp 0
1765 before it opens the terminal. */
1773 #endif /* TIOCNOTTY */
1775 #if !defined (DONT_REOPEN_PTY)
1776 /*** There is a suggestion that this ought to be a
1777 conditional on TIOCSPGRP,
1778 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1779 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1780 that system does seem to need this code, even though
1781 both HAVE_SETSID and TIOCSCTTY are defined. */
1782 /* Now close the pty (if we had it open) and reopen it.
1783 This makes the pty the controlling terminal of the subprocess. */
1787 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1790 emacs_close (xforkin
);
1791 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1795 emacs_write (1, "Couldn't open the pty terminal ", 31);
1796 emacs_write (1, pty_name
, strlen (pty_name
));
1797 emacs_write (1, "\n", 1);
1802 #endif /* not DONT_REOPEN_PTY */
1804 #ifdef SETUP_SLAVE_PTY
1809 #endif /* SETUP_SLAVE_PTY */
1811 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1812 Now reenable it in the child, so it will die when we want it to. */
1814 signal (SIGHUP
, SIG_DFL
);
1816 #endif /* HAVE_PTYS */
1818 signal (SIGINT
, SIG_DFL
);
1819 signal (SIGQUIT
, SIG_DFL
);
1820 /* GConf causes us to ignore SIGPIPE, make sure it is restored
1822 signal (SIGPIPE
, SIG_DFL
);
1824 /* Stop blocking signals in the child. */
1825 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1828 child_setup_tty (xforkout
);
1830 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1831 new_argv
, 1, encoded_current_dir
);
1832 #else /* not WINDOWSNT */
1834 emacs_close (wait_child_setup
[0]);
1836 child_setup (xforkin
, xforkout
, xforkout
,
1837 new_argv
, 1, encoded_current_dir
);
1838 #endif /* not WINDOWSNT */
1840 environ
= save_environ
;
1845 /* This runs in the Emacs process. */
1849 emacs_close (forkin
);
1850 if (forkin
!= forkout
&& forkout
>= 0)
1851 emacs_close (forkout
);
1855 /* vfork succeeded. */
1856 XPROCESS (process
)->pid
= pid
;
1859 register_child (pid
, inchannel
);
1860 #endif /* WINDOWSNT */
1862 /* If the subfork execv fails, and it exits,
1863 this close hangs. I don't know why.
1864 So have an interrupt jar it loose. */
1866 struct atimer
*timer
;
1870 EMACS_SET_SECS_USECS (offset
, 1, 0);
1871 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
1874 emacs_close (forkin
);
1876 cancel_atimer (timer
);
1880 if (forkin
!= forkout
&& forkout
>= 0)
1881 emacs_close (forkout
);
1885 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1888 XPROCESS (process
)->tty_name
= Qnil
;
1890 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1891 /* Wait for child_setup to complete in case that vfork is
1892 actually defined as fork. The descriptor wait_child_setup[1]
1893 of a pipe is closed at the child side either by close-on-exec
1894 on successful execvp or the _exit call in child_setup. */
1898 emacs_close (wait_child_setup
[1]);
1899 emacs_read (wait_child_setup
[0], &dummy
, 1);
1900 emacs_close (wait_child_setup
[0]);
1905 /* Restore the signal state whether vfork succeeded or not.
1906 (We will signal an error, below, if it failed.) */
1907 #ifdef HAVE_WORKING_VFORK
1908 /* Restore the parent's signal handlers. */
1909 sigaction (SIGINT
, &sigint_action
, 0);
1910 sigaction (SIGQUIT
, &sigquit_action
, 0);
1911 sigaction (SIGPIPE
, &sigpipe_action
, 0);
1913 sigaction (SIGHUP
, &sighup_action
, 0);
1915 #endif /* HAVE_WORKING_VFORK */
1916 /* Stop blocking signals in the parent. */
1917 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1919 /* Now generate the error if vfork failed. */
1921 report_file_error ("Doing vfork", Qnil
);
1925 create_pty (Lisp_Object process
)
1927 int inchannel
, outchannel
;
1930 inchannel
= outchannel
= -1;
1933 if (!NILP (Vprocess_connection_type
))
1934 outchannel
= inchannel
= allocate_pty ();
1938 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1939 /* On most USG systems it does not work to open the pty's tty here,
1940 then close it and reopen it in the child. */
1942 /* Don't let this terminal become our controlling terminal
1943 (in case we don't have one). */
1944 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1946 int forkout
= emacs_open (pty_name
, O_RDWR
, 0);
1949 report_file_error ("Opening pty", Qnil
);
1950 #if defined (DONT_REOPEN_PTY)
1951 /* In the case that vfork is defined as fork, the parent process
1952 (Emacs) may send some data before the child process completes
1953 tty options setup. So we setup tty before forking. */
1954 child_setup_tty (forkout
);
1955 #endif /* DONT_REOPEN_PTY */
1956 #endif /* not USG, or USG_SUBTTY_WORKS */
1959 #endif /* HAVE_PTYS */
1962 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1963 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1966 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1967 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1971 /* Record this as an active process, with its channels.
1972 As a result, child_setup will close Emacs's side of the pipes. */
1973 chan_process
[inchannel
] = process
;
1974 XPROCESS (process
)->infd
= inchannel
;
1975 XPROCESS (process
)->outfd
= outchannel
;
1977 /* Previously we recorded the tty descriptor used in the subprocess.
1978 It was only used for getting the foreground tty process, so now
1979 we just reopen the device (see emacs_get_tty_pgrp) as this is
1980 more portable (see USG_SUBTTY_WORKS above). */
1982 XPROCESS (process
)->pty_flag
= pty_flag
;
1983 XPROCESS (process
)->status
= Qrun
;
1984 setup_process_coding_systems (process
);
1986 FD_SET (inchannel
, &input_wait_mask
);
1987 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1988 if (inchannel
> max_process_desc
)
1989 max_process_desc
= inchannel
;
1991 XPROCESS (process
)->pid
= -2;
1994 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1997 XPROCESS (process
)->tty_name
= Qnil
;
2001 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2002 The address family of sa is not included in the result. */
2005 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
2007 Lisp_Object address
;
2010 register struct Lisp_Vector
*p
;
2012 /* Workaround for a bug in getsockname on BSD: Names bound to
2013 sockets in the UNIX domain are inaccessible; getsockname returns
2014 a zero length name. */
2015 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2016 return empty_unibyte_string
;
2018 switch (sa
->sa_family
)
2022 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2023 len
= sizeof (sin
->sin_addr
) + 1;
2024 address
= Fmake_vector (make_number (len
), Qnil
);
2025 p
= XVECTOR (address
);
2026 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2027 cp
= (unsigned char *) &sin
->sin_addr
;
2033 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2034 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2035 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2036 address
= Fmake_vector (make_number (len
), Qnil
);
2037 p
= XVECTOR (address
);
2038 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2039 for (i
= 0; i
< len
; i
++)
2040 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2044 #ifdef HAVE_LOCAL_SOCKETS
2047 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2048 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2049 if (sockun
->sun_path
[i
] == 0)
2051 return make_unibyte_string (sockun
->sun_path
, i
);
2055 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2056 address
= Fcons (make_number (sa
->sa_family
),
2057 Fmake_vector (make_number (len
), Qnil
));
2058 p
= XVECTOR (XCDR (address
));
2059 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2065 p
->contents
[i
++] = make_number (*cp
++);
2071 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2074 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2076 register struct Lisp_Vector
*p
;
2078 if (VECTORP (address
))
2080 p
= XVECTOR (address
);
2081 if (p
->header
.size
== 5)
2084 return sizeof (struct sockaddr_in
);
2087 else if (p
->header
.size
== 9)
2089 *familyp
= AF_INET6
;
2090 return sizeof (struct sockaddr_in6
);
2094 #ifdef HAVE_LOCAL_SOCKETS
2095 else if (STRINGP (address
))
2097 *familyp
= AF_LOCAL
;
2098 return sizeof (struct sockaddr_un
);
2101 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2103 struct sockaddr
*sa
;
2104 *familyp
= XINT (XCAR (address
));
2105 p
= XVECTOR (XCDR (address
));
2106 return p
->header
.size
+ sizeof (sa
->sa_family
);
2111 /* Convert an address object (vector or string) to an internal sockaddr.
2113 The address format has been basically validated by
2114 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2115 it could have come from user data. So if FAMILY is not valid,
2116 we return after zeroing *SA. */
2119 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2121 register struct Lisp_Vector
*p
;
2122 register unsigned char *cp
= NULL
;
2125 memset (sa
, 0, len
);
2127 if (VECTORP (address
))
2129 p
= XVECTOR (address
);
2130 if (family
== AF_INET
)
2132 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2133 len
= sizeof (sin
->sin_addr
) + 1;
2134 i
= XINT (p
->contents
[--len
]);
2135 sin
->sin_port
= htons (i
);
2136 cp
= (unsigned char *)&sin
->sin_addr
;
2137 sa
->sa_family
= family
;
2140 else if (family
== AF_INET6
)
2142 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2143 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2144 len
= sizeof (sin6
->sin6_addr
) + 1;
2145 i
= XINT (p
->contents
[--len
]);
2146 sin6
->sin6_port
= htons (i
);
2147 for (i
= 0; i
< len
; i
++)
2148 if (INTEGERP (p
->contents
[i
]))
2150 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2153 sa
->sa_family
= family
;
2160 else if (STRINGP (address
))
2162 #ifdef HAVE_LOCAL_SOCKETS
2163 if (family
== AF_LOCAL
)
2165 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2166 cp
= SDATA (address
);
2167 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2168 sockun
->sun_path
[i
] = *cp
++;
2169 sa
->sa_family
= family
;
2176 p
= XVECTOR (XCDR (address
));
2177 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2180 for (i
= 0; i
< len
; i
++)
2181 if (INTEGERP (p
->contents
[i
]))
2182 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2185 #ifdef DATAGRAM_SOCKETS
2186 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2188 doc
: /* Get the current datagram address associated with PROCESS. */)
2189 (Lisp_Object process
)
2193 CHECK_PROCESS (process
);
2195 if (!DATAGRAM_CONN_P (process
))
2198 channel
= XPROCESS (process
)->infd
;
2199 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2200 datagram_address
[channel
].len
);
2203 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2205 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2206 Returns nil upon error setting address, ADDRESS otherwise. */)
2207 (Lisp_Object process
, Lisp_Object address
)
2212 CHECK_PROCESS (process
);
2214 if (!DATAGRAM_CONN_P (process
))
2217 channel
= XPROCESS (process
)->infd
;
2219 len
= get_lisp_to_sockaddr_size (address
, &family
);
2220 if (datagram_address
[channel
].len
!= len
)
2222 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2228 static const struct socket_options
{
2229 /* The name of this option. Should be lowercase version of option
2230 name without SO_ prefix. */
2232 /* Option level SOL_... */
2234 /* Option number SO_... */
2236 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2237 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2238 } socket_options
[] =
2240 #ifdef SO_BINDTODEVICE
2241 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2244 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2247 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2250 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2253 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2256 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2259 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2262 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2264 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2267 /* Set option OPT to value VAL on socket S.
2269 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2270 Signals an error if setting a known option fails.
2274 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2277 const struct socket_options
*sopt
;
2282 name
= SSDATA (SYMBOL_NAME (opt
));
2283 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2284 if (strcmp (name
, sopt
->name
) == 0)
2287 switch (sopt
->opttype
)
2292 optval
= NILP (val
) ? 0 : 1;
2293 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2294 &optval
, sizeof (optval
));
2302 optval
= XINT (val
);
2304 error ("Bad option value for %s", name
);
2305 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2306 &optval
, sizeof (optval
));
2310 #ifdef SO_BINDTODEVICE
2313 char devname
[IFNAMSIZ
+1];
2315 /* This is broken, at least in the Linux 2.4 kernel.
2316 To unbind, the arg must be a zero integer, not the empty string.
2317 This should work on all systems. KFS. 2003-09-23. */
2318 memset (devname
, 0, sizeof devname
);
2321 char *arg
= SSDATA (val
);
2322 int len
= min (strlen (arg
), IFNAMSIZ
);
2323 memcpy (devname
, arg
, len
);
2325 else if (!NILP (val
))
2326 error ("Bad option value for %s", name
);
2327 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2336 struct linger linger
;
2339 linger
.l_linger
= 0;
2341 linger
.l_linger
= XINT (val
);
2343 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2344 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2345 &linger
, sizeof (linger
));
2355 report_file_error ("Cannot set network option",
2356 Fcons (opt
, Fcons (val
, Qnil
)));
2357 return (1 << sopt
->optbit
);
2361 DEFUN ("set-network-process-option",
2362 Fset_network_process_option
, Sset_network_process_option
,
2364 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2365 See `make-network-process' for a list of options and values.
2366 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2367 OPTION is not a supported option, return nil instead; otherwise return t. */)
2368 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2371 struct Lisp_Process
*p
;
2373 CHECK_PROCESS (process
);
2374 p
= XPROCESS (process
);
2375 if (!NETCONN1_P (p
))
2376 error ("Process is not a network process");
2380 error ("Process is not running");
2382 if (set_socket_option (s
, option
, value
))
2384 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2388 if (NILP (no_error
))
2389 error ("Unknown or unsupported option");
2395 DEFUN ("serial-process-configure",
2396 Fserial_process_configure
,
2397 Sserial_process_configure
,
2399 doc
: /* Configure speed, bytesize, etc. of a serial process.
2401 Arguments are specified as keyword/argument pairs. Attributes that
2402 are not given are re-initialized from the process's current
2403 configuration (available via the function `process-contact') or set to
2404 reasonable default values. The following arguments are defined:
2410 -- Any of these arguments can be given to identify the process that is
2411 to be configured. If none of these arguments is given, the current
2412 buffer's process is used.
2414 :speed SPEED -- SPEED is the speed of the serial port in bits per
2415 second, also called baud rate. Any value can be given for SPEED, but
2416 most serial ports work only at a few defined values between 1200 and
2417 115200, with 9600 being the most common value. If SPEED is nil, the
2418 serial port is not configured any further, i.e., all other arguments
2419 are ignored. This may be useful for special serial ports such as
2420 Bluetooth-to-serial converters which can only be configured through AT
2421 commands. A value of nil for SPEED can be used only when passed
2422 through `make-serial-process' or `serial-term'.
2424 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2425 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2427 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2428 `odd' (use odd parity), or the symbol `even' (use even parity). If
2429 PARITY is not given, no parity is used.
2431 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2432 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2433 is not given or nil, 1 stopbit is used.
2435 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2436 flowcontrol to be used, which is either nil (don't use flowcontrol),
2437 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2438 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2439 flowcontrol is used.
2441 `serial-process-configure' is called by `make-serial-process' for the
2442 initial configuration of the serial port.
2446 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2448 \(serial-process-configure
2449 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2451 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2453 usage: (serial-process-configure &rest ARGS) */)
2454 (ptrdiff_t nargs
, Lisp_Object
*args
)
2456 struct Lisp_Process
*p
;
2457 Lisp_Object contact
= Qnil
;
2458 Lisp_Object proc
= Qnil
;
2459 struct gcpro gcpro1
;
2461 contact
= Flist (nargs
, args
);
2464 proc
= Fplist_get (contact
, QCprocess
);
2466 proc
= Fplist_get (contact
, QCname
);
2468 proc
= Fplist_get (contact
, QCbuffer
);
2470 proc
= Fplist_get (contact
, QCport
);
2471 proc
= get_process (proc
);
2472 p
= XPROCESS (proc
);
2473 if (!EQ (p
->type
, Qserial
))
2474 error ("Not a serial process");
2476 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2482 serial_configure (p
, contact
);
2488 /* Used by make-serial-process to recover from errors. */
2490 make_serial_process_unwind (Lisp_Object proc
)
2492 if (!PROCESSP (proc
))
2494 remove_process (proc
);
2498 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2500 doc
: /* Create and return a serial port process.
2502 In Emacs, serial port connections are represented by process objects,
2503 so input and output work as for subprocesses, and `delete-process'
2504 closes a serial port connection. However, a serial process has no
2505 process id, it cannot be signaled, and the status codes are different
2506 from normal processes.
2508 `make-serial-process' creates a process and a buffer, on which you
2509 probably want to use `process-send-string'. Try \\[serial-term] for
2510 an interactive terminal. See below for examples.
2512 Arguments are specified as keyword/argument pairs. The following
2513 arguments are defined:
2515 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2516 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2517 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2518 the backslashes in strings).
2520 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2521 which is called by `make-serial-process'.
2523 :name NAME -- NAME is the name of the process. If NAME is not given,
2524 the value of PORT is used.
2526 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2527 with the process. Process output goes at the end of that buffer,
2528 unless you specify an output stream or filter function to handle the
2529 output. If BUFFER is not given, the value of NAME is used.
2531 :coding CODING -- If CODING is a symbol, it specifies the coding
2532 system used for both reading and writing for this process. If CODING
2533 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2534 ENCODING is used for writing.
2536 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2537 the process is running. If BOOL is not given, query before exiting.
2539 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2540 In the stopped state, a serial process does not accept incoming data,
2541 but you can send outgoing data. The stopped state is cleared by
2542 `continue-process' and set by `stop-process'.
2544 :filter FILTER -- Install FILTER as the process filter.
2546 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2548 :plist PLIST -- Install PLIST as the initial plist of the process.
2555 -- These arguments are handled by `serial-process-configure', which is
2556 called by `make-serial-process'.
2558 The original argument list, possibly modified by later configuration,
2559 is available via the function `process-contact'.
2563 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2565 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2567 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2569 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2571 usage: (make-serial-process &rest ARGS) */)
2572 (ptrdiff_t nargs
, Lisp_Object
*args
)
2575 Lisp_Object proc
, contact
, port
;
2576 struct Lisp_Process
*p
;
2577 struct gcpro gcpro1
;
2578 Lisp_Object name
, buffer
;
2579 Lisp_Object tem
, val
;
2580 int specpdl_count
= -1;
2585 contact
= Flist (nargs
, args
);
2588 port
= Fplist_get (contact
, QCport
);
2590 error ("No port specified");
2591 CHECK_STRING (port
);
2593 if (NILP (Fplist_member (contact
, QCspeed
)))
2594 error (":speed not specified");
2595 if (!NILP (Fplist_get (contact
, QCspeed
)))
2596 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2598 name
= Fplist_get (contact
, QCname
);
2601 CHECK_STRING (name
);
2602 proc
= make_process (name
);
2603 specpdl_count
= SPECPDL_INDEX ();
2604 record_unwind_protect (make_serial_process_unwind
, proc
);
2605 p
= XPROCESS (proc
);
2607 fd
= serial_open (SSDATA (port
));
2610 if (fd
> max_process_desc
)
2611 max_process_desc
= fd
;
2612 chan_process
[fd
] = proc
;
2614 buffer
= Fplist_get (contact
, QCbuffer
);
2617 buffer
= Fget_buffer_create (buffer
);
2620 p
->childp
= contact
;
2621 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2623 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2624 p
->filter
= Fplist_get (contact
, QCfilter
);
2626 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2627 p
->kill_without_query
= 1;
2628 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2632 if (!EQ (p
->command
, Qt
))
2634 FD_SET (fd
, &input_wait_mask
);
2635 FD_SET (fd
, &non_keyboard_wait_mask
);
2638 if (BUFFERP (buffer
))
2640 set_marker_both (p
->mark
, buffer
,
2641 BUF_ZV (XBUFFER (buffer
)),
2642 BUF_ZV_BYTE (XBUFFER (buffer
)));
2645 tem
= Fplist_member (contact
, QCcoding
);
2646 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2652 val
= XCAR (XCDR (tem
));
2656 else if (!NILP (Vcoding_system_for_read
))
2657 val
= Vcoding_system_for_read
;
2658 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2659 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2661 p
->decode_coding_system
= val
;
2666 val
= XCAR (XCDR (tem
));
2670 else if (!NILP (Vcoding_system_for_write
))
2671 val
= Vcoding_system_for_write
;
2672 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2673 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2675 p
->encode_coding_system
= val
;
2677 setup_process_coding_systems (proc
);
2678 p
->decoding_buf
= empty_unibyte_string
;
2679 p
->decoding_carryover
= 0;
2680 p
->encoding_buf
= empty_unibyte_string
;
2681 p
->inherit_coding_system_flag
2682 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2684 Fserial_process_configure (nargs
, args
);
2686 specpdl_ptr
= specpdl
+ specpdl_count
;
2692 /* Create a network stream/datagram client/server process. Treated
2693 exactly like a normal process when reading and writing. Primary
2694 differences are in status display and process deletion. A network
2695 connection has no PID; you cannot signal it. All you can do is
2696 stop/continue it and deactivate/close it via delete-process */
2698 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2700 doc
: /* Create and return a network server or client process.
2702 In Emacs, network connections are represented by process objects, so
2703 input and output work as for subprocesses and `delete-process' closes
2704 a network connection. However, a network process has no process id,
2705 it cannot be signaled, and the status codes are different from normal
2708 Arguments are specified as keyword/argument pairs. The following
2709 arguments are defined:
2711 :name NAME -- NAME is name for process. It is modified if necessary
2714 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2715 with the process. Process output goes at end of that buffer, unless
2716 you specify an output stream or filter function to handle the output.
2717 BUFFER may be also nil, meaning that this process is not associated
2720 :host HOST -- HOST is name of the host to connect to, or its IP
2721 address. The symbol `local' specifies the local host. If specified
2722 for a server process, it must be a valid name or address for the local
2723 host, and only clients connecting to that address will be accepted.
2725 :service SERVICE -- SERVICE is name of the service desired, or an
2726 integer specifying a port number to connect to. If SERVICE is t,
2727 a random port number is selected for the server. (If Emacs was
2728 compiled with getaddrinfo, a port number can also be specified as a
2729 string, e.g. "80", as well as an integer. This is not portable.)
2731 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2732 stream type connection, `datagram' creates a datagram type connection,
2733 `seqpacket' creates a reliable datagram connection.
2735 :family FAMILY -- FAMILY is the address (and protocol) family for the
2736 service specified by HOST and SERVICE. The default (nil) is to use
2737 whatever address family (IPv4 or IPv6) that is defined for the host
2738 and port number specified by HOST and SERVICE. Other address families
2740 local -- for a local (i.e. UNIX) address specified by SERVICE.
2741 ipv4 -- use IPv4 address family only.
2742 ipv6 -- use IPv6 address family only.
2744 :local ADDRESS -- ADDRESS is the local address used for the connection.
2745 This parameter is ignored when opening a client process. When specified
2746 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2748 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2749 connection. This parameter is ignored when opening a stream server
2750 process. For a datagram server process, it specifies the initial
2751 setting of the remote datagram address. When specified for a client
2752 process, the FAMILY, HOST, and SERVICE args are ignored.
2754 The format of ADDRESS depends on the address family:
2755 - An IPv4 address is represented as an vector of integers [A B C D P]
2756 corresponding to numeric IP address A.B.C.D and port number P.
2757 - A local address is represented as a string with the address in the
2758 local address space.
2759 - An "unsupported family" address is represented by a cons (F . AV)
2760 where F is the family number and AV is a vector containing the socket
2761 address data with one element per address data byte. Do not rely on
2762 this format in portable code, as it may depend on implementation
2763 defined constants, data sizes, and data structure alignment.
2765 :coding CODING -- If CODING is a symbol, it specifies the coding
2766 system used for both reading and writing for this process. If CODING
2767 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2768 ENCODING is used for writing.
2770 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2771 return without waiting for the connection to complete; instead, the
2772 sentinel function will be called with second arg matching "open" (if
2773 successful) or "failed" when the connect completes. Default is to use
2774 a blocking connect (i.e. wait) for stream type connections.
2776 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2777 running when Emacs is exited.
2779 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2780 In the stopped state, a server process does not accept new
2781 connections, and a client process does not handle incoming traffic.
2782 The stopped state is cleared by `continue-process' and set by
2785 :filter FILTER -- Install FILTER as the process filter.
2787 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2788 process filter are multibyte, otherwise they are unibyte.
2789 If this keyword is not specified, the strings are multibyte if
2790 `default-enable-multibyte-characters' is non-nil.
2792 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2794 :log LOG -- Install LOG as the server process log function. This
2795 function is called when the server accepts a network connection from a
2796 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2797 is the server process, CLIENT is the new process for the connection,
2798 and MESSAGE is a string.
2800 :plist PLIST -- Install PLIST as the new process' initial plist.
2802 :server QLEN -- if QLEN is non-nil, create a server process for the
2803 specified FAMILY, SERVICE, and connection type (stream or datagram).
2804 If QLEN is an integer, it is used as the max. length of the server's
2805 pending connection queue (also known as the backlog); the default
2806 queue length is 5. Default is to create a client process.
2808 The following network options can be specified for this connection:
2810 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2811 :dontroute BOOL -- Only send to directly connected hosts.
2812 :keepalive BOOL -- Send keep-alive messages on network stream.
2813 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2814 :oobinline BOOL -- Place out-of-band data in receive data stream.
2815 :priority INT -- Set protocol defined priority for sent packets.
2816 :reuseaddr BOOL -- Allow reusing a recently used local address
2817 (this is allowed by default for a server process).
2818 :bindtodevice NAME -- bind to interface NAME. Using this may require
2819 special privileges on some systems.
2821 Consult the relevant system programmer's manual pages for more
2822 information on using these options.
2825 A server process will listen for and accept connections from clients.
2826 When a client connection is accepted, a new network process is created
2827 for the connection with the following parameters:
2829 - The client's process name is constructed by concatenating the server
2830 process' NAME and a client identification string.
2831 - If the FILTER argument is non-nil, the client process will not get a
2832 separate process buffer; otherwise, the client's process buffer is a newly
2833 created buffer named after the server process' BUFFER name or process
2834 NAME concatenated with the client identification string.
2835 - The connection type and the process filter and sentinel parameters are
2836 inherited from the server process' TYPE, FILTER and SENTINEL.
2837 - The client process' contact info is set according to the client's
2838 addressing information (typically an IP address and a port number).
2839 - The client process' plist is initialized from the server's plist.
2841 Notice that the FILTER and SENTINEL args are never used directly by
2842 the server process. Also, the BUFFER argument is not used directly by
2843 the server process, but via the optional :log function, accepted (and
2844 failed) connections may be logged in the server process' buffer.
2846 The original argument list, modified with the actual connection
2847 information, is available via the `process-contact' function.
2849 usage: (make-network-process &rest ARGS) */)
2850 (ptrdiff_t nargs
, Lisp_Object
*args
)
2853 Lisp_Object contact
;
2854 struct Lisp_Process
*p
;
2855 #ifdef HAVE_GETADDRINFO
2856 struct addrinfo ai
, *res
, *lres
;
2857 struct addrinfo hints
;
2858 const char *portstring
;
2860 #else /* HAVE_GETADDRINFO */
2861 struct _emacs_addrinfo
2867 struct sockaddr
*ai_addr
;
2868 struct _emacs_addrinfo
*ai_next
;
2870 #endif /* HAVE_GETADDRINFO */
2871 struct sockaddr_in address_in
;
2872 #ifdef HAVE_LOCAL_SOCKETS
2873 struct sockaddr_un address_un
;
2878 int s
= -1, outch
, inch
;
2879 struct gcpro gcpro1
;
2880 int count
= SPECPDL_INDEX ();
2882 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2884 Lisp_Object name
, buffer
, host
, service
, address
;
2885 Lisp_Object filter
, sentinel
;
2886 int is_non_blocking_client
= 0;
2887 int is_server
= 0, backlog
= 5;
2894 /* Save arguments for process-contact and clone-process. */
2895 contact
= Flist (nargs
, args
);
2899 /* Ensure socket support is loaded if available. */
2900 init_winsock (TRUE
);
2903 /* :type TYPE (nil: stream, datagram */
2904 tem
= Fplist_get (contact
, QCtype
);
2906 socktype
= SOCK_STREAM
;
2907 #ifdef DATAGRAM_SOCKETS
2908 else if (EQ (tem
, Qdatagram
))
2909 socktype
= SOCK_DGRAM
;
2911 #ifdef HAVE_SEQPACKET
2912 else if (EQ (tem
, Qseqpacket
))
2913 socktype
= SOCK_SEQPACKET
;
2916 error ("Unsupported connection type");
2919 tem
= Fplist_get (contact
, QCserver
);
2922 /* Don't support network sockets when non-blocking mode is
2923 not available, since a blocked Emacs is not useful. */
2924 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
2925 error ("Network servers not supported");
2929 backlog
= XINT (tem
);
2933 /* Make QCaddress an alias for :local (server) or :remote (client). */
2934 QCaddress
= is_server
? QClocal
: QCremote
;
2937 if (!is_server
&& socktype
!= SOCK_DGRAM
2938 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2940 #ifndef NON_BLOCKING_CONNECT
2941 error ("Non-blocking connect not supported");
2943 is_non_blocking_client
= 1;
2947 name
= Fplist_get (contact
, QCname
);
2948 buffer
= Fplist_get (contact
, QCbuffer
);
2949 filter
= Fplist_get (contact
, QCfilter
);
2950 sentinel
= Fplist_get (contact
, QCsentinel
);
2952 CHECK_STRING (name
);
2954 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2955 ai
.ai_socktype
= socktype
;
2960 /* :local ADDRESS or :remote ADDRESS */
2961 address
= Fplist_get (contact
, QCaddress
);
2962 if (!NILP (address
))
2964 host
= service
= Qnil
;
2966 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2967 error ("Malformed :address");
2968 ai
.ai_family
= family
;
2969 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2970 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2974 /* :family FAMILY -- nil (for Inet), local, or integer. */
2975 tem
= Fplist_get (contact
, QCfamily
);
2978 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2984 #ifdef HAVE_LOCAL_SOCKETS
2985 else if (EQ (tem
, Qlocal
))
2989 else if (EQ (tem
, Qipv6
))
2992 else if (EQ (tem
, Qipv4
))
2994 else if (INTEGERP (tem
))
2995 family
= XINT (tem
);
2997 error ("Unknown address family");
2999 ai
.ai_family
= family
;
3001 /* :service SERVICE -- string, integer (port number), or t (random port). */
3002 service
= Fplist_get (contact
, QCservice
);
3004 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3005 host
= Fplist_get (contact
, QChost
);
3008 if (EQ (host
, Qlocal
))
3009 /* Depending on setup, "localhost" may map to different IPv4 and/or
3010 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
3011 host
= build_string ("127.0.0.1");
3012 CHECK_STRING (host
);
3015 #ifdef HAVE_LOCAL_SOCKETS
3016 if (family
== AF_LOCAL
)
3020 message (":family local ignores the :host \"%s\" property",
3022 contact
= Fplist_put (contact
, QChost
, Qnil
);
3025 CHECK_STRING (service
);
3026 memset (&address_un
, 0, sizeof address_un
);
3027 address_un
.sun_family
= AF_LOCAL
;
3028 strncpy (address_un
.sun_path
, SSDATA (service
), sizeof address_un
.sun_path
);
3029 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3030 ai
.ai_addrlen
= sizeof address_un
;
3035 /* Slow down polling to every ten seconds.
3036 Some kernels have a bug which causes retrying connect to fail
3037 after a connect. Polling can interfere with gethostbyname too. */
3038 #ifdef POLL_FOR_INPUT
3039 if (socktype
!= SOCK_DGRAM
)
3041 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3042 bind_polling_period (10);
3046 #ifdef HAVE_GETADDRINFO
3047 /* If we have a host, use getaddrinfo to resolve both host and service.
3048 Otherwise, use getservbyname to lookup the service. */
3052 /* SERVICE can either be a string or int.
3053 Convert to a C string for later use by getaddrinfo. */
3054 if (EQ (service
, Qt
))
3056 else if (INTEGERP (service
))
3058 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3059 portstring
= portbuf
;
3063 CHECK_STRING (service
);
3064 portstring
= SSDATA (service
);
3069 memset (&hints
, 0, sizeof (hints
));
3071 hints
.ai_family
= family
;
3072 hints
.ai_socktype
= socktype
;
3073 hints
.ai_protocol
= 0;
3075 #ifdef HAVE_RES_INIT
3079 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3081 #ifdef HAVE_GAI_STRERROR
3082 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3084 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3090 #endif /* HAVE_GETADDRINFO */
3092 /* We end up here if getaddrinfo is not defined, or in case no hostname
3093 has been specified (e.g. for a local server process). */
3095 if (EQ (service
, Qt
))
3097 else if (INTEGERP (service
))
3098 port
= htons ((unsigned short) XINT (service
));
3101 struct servent
*svc_info
;
3102 CHECK_STRING (service
);
3103 svc_info
= getservbyname (SSDATA (service
),
3104 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3106 error ("Unknown service: %s", SDATA (service
));
3107 port
= svc_info
->s_port
;
3110 memset (&address_in
, 0, sizeof address_in
);
3111 address_in
.sin_family
= family
;
3112 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3113 address_in
.sin_port
= port
;
3115 #ifndef HAVE_GETADDRINFO
3118 struct hostent
*host_info_ptr
;
3120 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3121 as it may `hang' Emacs for a very long time. */
3125 #ifdef HAVE_RES_INIT
3129 host_info_ptr
= gethostbyname (SDATA (host
));
3134 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3135 host_info_ptr
->h_length
);
3136 family
= host_info_ptr
->h_addrtype
;
3137 address_in
.sin_family
= family
;
3140 /* Attempt to interpret host as numeric inet address */
3142 unsigned long numeric_addr
;
3143 numeric_addr
= inet_addr (SSDATA (host
));
3144 if (numeric_addr
== -1)
3145 error ("Unknown host \"%s\"", SDATA (host
));
3147 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3148 sizeof (address_in
.sin_addr
));
3152 #endif /* not HAVE_GETADDRINFO */
3154 ai
.ai_family
= family
;
3155 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3156 ai
.ai_addrlen
= sizeof address_in
;
3160 /* Do this in case we never enter the for-loop below. */
3161 count1
= SPECPDL_INDEX ();
3164 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3173 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3180 #ifdef DATAGRAM_SOCKETS
3181 if (!is_server
&& socktype
== SOCK_DGRAM
)
3183 #endif /* DATAGRAM_SOCKETS */
3185 #ifdef NON_BLOCKING_CONNECT
3186 if (is_non_blocking_client
)
3189 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3191 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3203 /* Make us close S if quit. */
3204 record_unwind_protect (close_file_unwind
, make_number (s
));
3206 /* Parse network options in the arg list.
3207 We simply ignore anything which isn't a known option (including other keywords).
3208 An error is signaled if setting a known option fails. */
3209 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3210 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3214 /* Configure as a server socket. */
3216 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3217 explicit :reuseaddr key to override this. */
3218 #ifdef HAVE_LOCAL_SOCKETS
3219 if (family
!= AF_LOCAL
)
3221 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3224 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3225 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3228 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3229 report_file_error ("Cannot bind server socket", Qnil
);
3231 #ifdef HAVE_GETSOCKNAME
3232 if (EQ (service
, Qt
))
3234 struct sockaddr_in sa1
;
3235 socklen_t len1
= sizeof (sa1
);
3236 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3238 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3239 service
= make_number (ntohs (sa1
.sin_port
));
3240 contact
= Fplist_put (contact
, QCservice
, service
);
3245 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3246 report_file_error ("Cannot listen on server socket", Qnil
);
3254 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3257 if (ret
== 0 || xerrno
== EISCONN
)
3259 /* The unwind-protect will be discarded afterwards.
3260 Likewise for immediate_quit. */
3264 #ifdef NON_BLOCKING_CONNECT
3266 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3270 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3277 if (xerrno
== EINTR
)
3279 /* Unlike most other syscalls connect() cannot be called
3280 again. (That would return EALREADY.) The proper way to
3281 wait for completion is select(). */
3289 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3296 report_file_error ("select failed", Qnil
);
3300 len
= sizeof xerrno
;
3301 eassert (FD_ISSET (s
, &fdset
));
3302 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3303 report_file_error ("getsockopt failed", Qnil
);
3305 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3309 #endif /* !WINDOWSNT */
3313 /* Discard the unwind protect closing S. */
3314 specpdl_ptr
= specpdl
+ count1
;
3319 if (xerrno
== EINTR
)
3326 #ifdef DATAGRAM_SOCKETS
3327 if (socktype
== SOCK_DGRAM
)
3329 if (datagram_address
[s
].sa
)
3331 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3332 datagram_address
[s
].len
= lres
->ai_addrlen
;
3336 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3337 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3340 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3341 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3342 conv_lisp_to_sockaddr (rfamily
, remote
,
3343 datagram_address
[s
].sa
, rlen
);
3347 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3350 contact
= Fplist_put (contact
, QCaddress
,
3351 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3352 #ifdef HAVE_GETSOCKNAME
3355 struct sockaddr_in sa1
;
3356 socklen_t len1
= sizeof (sa1
);
3357 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3358 contact
= Fplist_put (contact
, QClocal
,
3359 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3366 #ifdef HAVE_GETADDRINFO
3375 /* Discard the unwind protect for closing S, if any. */
3376 specpdl_ptr
= specpdl
+ count1
;
3378 /* Unwind bind_polling_period and request_sigio. */
3379 unbind_to (count
, Qnil
);
3383 /* If non-blocking got this far - and failed - assume non-blocking is
3384 not supported after all. This is probably a wrong assumption, but
3385 the normal blocking calls to open-network-stream handles this error
3387 if (is_non_blocking_client
)
3392 report_file_error ("make server process failed", contact
);
3394 report_file_error ("make client process failed", contact
);
3401 buffer
= Fget_buffer_create (buffer
);
3402 proc
= make_process (name
);
3404 chan_process
[inch
] = proc
;
3407 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3410 fcntl (inch
, F_SETFL
, O_NDELAY
);
3414 p
= XPROCESS (proc
);
3416 p
->childp
= contact
;
3417 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3421 p
->sentinel
= sentinel
;
3423 p
->log
= Fplist_get (contact
, QClog
);
3424 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3425 p
->kill_without_query
= 1;
3426 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3431 if (is_server
&& socktype
!= SOCK_DGRAM
)
3432 p
->status
= Qlisten
;
3434 /* Make the process marker point into the process buffer (if any). */
3435 if (BUFFERP (buffer
))
3436 set_marker_both (p
->mark
, buffer
,
3437 BUF_ZV (XBUFFER (buffer
)),
3438 BUF_ZV_BYTE (XBUFFER (buffer
)));
3440 #ifdef NON_BLOCKING_CONNECT
3441 if (is_non_blocking_client
)
3443 /* We may get here if connect did succeed immediately. However,
3444 in that case, we still need to signal this like a non-blocking
3446 p
->status
= Qconnect
;
3447 if (!FD_ISSET (inch
, &connect_wait_mask
))
3449 FD_SET (inch
, &connect_wait_mask
);
3450 FD_SET (inch
, &write_mask
);
3451 num_pending_connects
++;
3456 /* A server may have a client filter setting of Qt, but it must
3457 still listen for incoming connects unless it is stopped. */
3458 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3459 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3461 FD_SET (inch
, &input_wait_mask
);
3462 FD_SET (inch
, &non_keyboard_wait_mask
);
3465 if (inch
> max_process_desc
)
3466 max_process_desc
= inch
;
3468 tem
= Fplist_member (contact
, QCcoding
);
3469 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3470 tem
= Qnil
; /* No error message (too late!). */
3473 /* Setup coding systems for communicating with the network stream. */
3474 struct gcpro inner_gcpro1
;
3475 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3476 Lisp_Object coding_systems
= Qt
;
3477 Lisp_Object fargs
[5], val
;
3481 val
= XCAR (XCDR (tem
));
3485 else if (!NILP (Vcoding_system_for_read
))
3486 val
= Vcoding_system_for_read
;
3487 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3488 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3489 /* We dare not decode end-of-line format by setting VAL to
3490 Qraw_text, because the existing Emacs Lisp libraries
3491 assume that they receive bare code including a sequene of
3496 if (NILP (host
) || NILP (service
))
3497 coding_systems
= Qnil
;
3500 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3501 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3502 GCPRO1_VAR (proc
, inner_gcpro
);
3503 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3504 UNGCPRO_VAR (inner_gcpro
);
3506 if (CONSP (coding_systems
))
3507 val
= XCAR (coding_systems
);
3508 else if (CONSP (Vdefault_process_coding_system
))
3509 val
= XCAR (Vdefault_process_coding_system
);
3513 p
->decode_coding_system
= val
;
3517 val
= XCAR (XCDR (tem
));
3521 else if (!NILP (Vcoding_system_for_write
))
3522 val
= Vcoding_system_for_write
;
3523 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3527 if (EQ (coding_systems
, Qt
))
3529 if (NILP (host
) || NILP (service
))
3530 coding_systems
= Qnil
;
3533 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3534 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3535 GCPRO1_VAR (proc
, inner_gcpro
);
3536 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3537 UNGCPRO_VAR (inner_gcpro
);
3540 if (CONSP (coding_systems
))
3541 val
= XCDR (coding_systems
);
3542 else if (CONSP (Vdefault_process_coding_system
))
3543 val
= XCDR (Vdefault_process_coding_system
);
3547 p
->encode_coding_system
= val
;
3549 setup_process_coding_systems (proc
);
3551 p
->decoding_buf
= empty_unibyte_string
;
3552 p
->decoding_carryover
= 0;
3553 p
->encoding_buf
= empty_unibyte_string
;
3555 p
->inherit_coding_system_flag
3556 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3563 #if defined(HAVE_NET_IF_H)
3566 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3567 doc
: /* Return an alist of all network interfaces and their network address.
3568 Each element is a cons, the car of which is a string containing the
3569 interface name, and the cdr is the network address in internal
3570 format; see the description of ADDRESS in `make-network-process'. */)
3573 struct ifconf ifconf
;
3574 struct ifreq
*ifreq
;
3576 int buf_size
= 512, s
, i
;
3579 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3585 buf
= xrealloc(buf
, buf_size
);
3592 ifconf
.ifc_buf
= buf
;
3593 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3600 if (ifconf
.ifc_len
== buf_size
)
3606 for (ifreq
= ifconf
.ifc_req
;
3607 (char *) ifreq
< (char *) (ifconf
.ifc_req
) + ifconf
.ifc_len
;
3610 struct ifreq
*ifq
= ifreq
;
3611 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3612 #define SIZEOF_IFREQ(sif) \
3613 ((sif)->ifr_addr.sa_len < sizeof(struct sockaddr) ? \
3614 sizeof((*sif)) : sizeof ((sif)->ifr_name) + sif->ifr_addr.sa_len)
3616 int len
= SIZEOF_IFREQ (ifq
);
3618 int len
= sizeof (*ifreq
);
3620 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3622 ifreq
= (struct ifreq
*) ((char*) ifreq
+ len
);
3624 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3627 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3628 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3629 res
= Fcons (Fcons (build_string (namebuf
),
3630 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3631 sizeof (struct sockaddr
))),
3638 #endif /* SIOCGIFCONF */
3640 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3644 const char *flag_sym
;
3647 static const struct ifflag_def ifflag_table
[] = {
3651 #ifdef IFF_BROADCAST
3652 { IFF_BROADCAST
, "broadcast" },
3655 { IFF_DEBUG
, "debug" },
3658 { IFF_LOOPBACK
, "loopback" },
3660 #ifdef IFF_POINTOPOINT
3661 { IFF_POINTOPOINT
, "pointopoint" },
3664 { IFF_RUNNING
, "running" },
3667 { IFF_NOARP
, "noarp" },
3670 { IFF_PROMISC
, "promisc" },
3672 #ifdef IFF_NOTRAILERS
3673 #ifdef NS_IMPL_COCOA
3674 /* Really means smart, notrailers is obsolete */
3675 { IFF_NOTRAILERS
, "smart" },
3677 { IFF_NOTRAILERS
, "notrailers" },
3681 { IFF_ALLMULTI
, "allmulti" },
3684 { IFF_MASTER
, "master" },
3687 { IFF_SLAVE
, "slave" },
3689 #ifdef IFF_MULTICAST
3690 { IFF_MULTICAST
, "multicast" },
3693 { IFF_PORTSEL
, "portsel" },
3695 #ifdef IFF_AUTOMEDIA
3696 { IFF_AUTOMEDIA
, "automedia" },
3699 { IFF_DYNAMIC
, "dynamic" },
3702 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3705 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3708 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3711 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3714 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3719 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3720 doc
: /* Return information about network interface named IFNAME.
3721 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3722 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3723 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3724 FLAGS is the current flags of the interface. */)
3725 (Lisp_Object ifname
)
3728 Lisp_Object res
= Qnil
;
3732 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3733 && defined HAVE_GETIFADDRS && defined LLADDR)
3734 struct ifaddrs
*ifap
;
3737 CHECK_STRING (ifname
);
3739 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3740 strncpy (rq
.ifr_name
, SSDATA (ifname
), sizeof (rq
.ifr_name
));
3742 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3747 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3748 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3750 int flags
= rq
.ifr_flags
;
3751 const struct ifflag_def
*fp
;
3754 /* If flags is smaller than int (i.e. short) it may have the high bit set
3755 due to IFF_MULTICAST. In that case, sign extending it into
3757 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3758 flags
= (unsigned short) rq
.ifr_flags
;
3761 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3763 if (flags
& fp
->flag_bit
)
3765 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3766 flags
-= fp
->flag_bit
;
3769 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3773 elt
= Fcons (make_number (fnum
), elt
);
3778 res
= Fcons (elt
, res
);
3781 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3782 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3784 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3785 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3789 for (n
= 0; n
< 6; n
++)
3790 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3791 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3793 #elif defined(HAVE_GETIFADDRS) && defined(LLADDR)
3794 if (getifaddrs (&ifap
) != -1)
3796 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3797 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3800 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3802 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3803 unsigned char linkaddr
[6];
3806 if (it
->ifa_addr
->sa_family
!= AF_LINK
3807 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3808 || sdl
->sdl_alen
!= 6)
3811 memcpy (linkaddr
, LLADDR(sdl
), sdl
->sdl_alen
);
3812 for (n
= 0; n
< 6; n
++)
3813 p
->contents
[n
] = make_number (linkaddr
[n
]);
3815 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3819 #ifdef HAVE_FREEIFADDRS
3823 #endif /* HAVE_GETIFADDRS && LLADDR */
3825 res
= Fcons (elt
, res
);
3828 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3829 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3832 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3833 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3835 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3839 res
= Fcons (elt
, res
);
3842 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3843 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3846 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3849 res
= Fcons (elt
, res
);
3852 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3853 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3856 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3859 res
= Fcons (elt
, res
);
3863 return any
? res
: Qnil
;
3866 #endif /* defined(HAVE_NET_IF_H) */
3868 /* Turn off input and output for process PROC. */
3871 deactivate_process (Lisp_Object proc
)
3873 register int inchannel
, outchannel
;
3874 register struct Lisp_Process
*p
= XPROCESS (proc
);
3876 inchannel
= p
->infd
;
3877 outchannel
= p
->outfd
;
3879 #ifdef ADAPTIVE_READ_BUFFERING
3880 if (p
->read_output_delay
> 0)
3882 if (--process_output_delay_count
< 0)
3883 process_output_delay_count
= 0;
3884 p
->read_output_delay
= 0;
3885 p
->read_output_skip
= 0;
3891 /* Beware SIGCHLD hereabouts. */
3892 flush_pending_output (inchannel
);
3893 emacs_close (inchannel
);
3894 if (outchannel
>= 0 && outchannel
!= inchannel
)
3895 emacs_close (outchannel
);
3899 #ifdef DATAGRAM_SOCKETS
3900 if (DATAGRAM_CHAN_P (inchannel
))
3902 xfree (datagram_address
[inchannel
].sa
);
3903 datagram_address
[inchannel
].sa
= 0;
3904 datagram_address
[inchannel
].len
= 0;
3907 chan_process
[inchannel
] = Qnil
;
3908 FD_CLR (inchannel
, &input_wait_mask
);
3909 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3910 #ifdef NON_BLOCKING_CONNECT
3911 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3913 FD_CLR (inchannel
, &connect_wait_mask
);
3914 FD_CLR (inchannel
, &write_mask
);
3915 if (--num_pending_connects
< 0)
3919 if (inchannel
== max_process_desc
)
3922 /* We just closed the highest-numbered process input descriptor,
3923 so recompute the highest-numbered one now. */
3924 max_process_desc
= 0;
3925 for (i
= 0; i
< MAXDESC
; i
++)
3926 if (!NILP (chan_process
[i
]))
3927 max_process_desc
= i
;
3933 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3935 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3936 It is read into the process' buffers or given to their filter functions.
3937 Non-nil arg PROCESS means do not return until some output has been received
3940 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3941 and milliseconds to wait; return after that much time whether or not
3942 there is any subprocess output. If SECONDS is a floating point number,
3943 it specifies a fractional number of seconds to wait.
3944 The MILLISEC argument is obsolete and should be avoided.
3946 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3947 from PROCESS, suspending reading output from other processes.
3948 If JUST-THIS-ONE is an integer, don't run any timers either.
3949 Return non-nil if we received any output before the timeout expired. */)
3950 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3952 int secs
, usecs
= 0;
3954 if (! NILP (process
))
3955 CHECK_PROCESS (process
);
3957 just_this_one
= Qnil
;
3959 if (!NILP (millisec
))
3960 { /* Obsolete calling convention using integers rather than floats. */
3961 CHECK_NUMBER (millisec
);
3963 seconds
= make_float (XINT (millisec
) / 1000.0);
3966 CHECK_NUMBER (seconds
);
3967 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3971 if (!NILP (seconds
))
3973 if (INTEGERP (seconds
))
3974 secs
= XINT (seconds
);
3975 else if (FLOATP (seconds
))
3977 double timeout
= XFLOAT_DATA (seconds
);
3978 secs
= (int) timeout
;
3979 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3982 wrong_type_argument (Qnumberp
, seconds
);
3984 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3985 secs
= -1, usecs
= 0;
3988 secs
= NILP (process
) ? -1 : 0;
3991 (wait_reading_process_output (secs
, usecs
, 0, 0,
3993 !NILP (process
) ? XPROCESS (process
) : NULL
,
3994 NILP (just_this_one
) ? 0 :
3995 !INTEGERP (just_this_one
) ? 1 : -1)
3999 /* Accept a connection for server process SERVER on CHANNEL. */
4001 static int connect_counter
= 0;
4004 server_accept_connection (Lisp_Object server
, int channel
)
4006 Lisp_Object proc
, caller
, name
, buffer
;
4007 Lisp_Object contact
, host
, service
;
4008 struct Lisp_Process
*ps
= XPROCESS (server
);
4009 struct Lisp_Process
*p
;
4013 struct sockaddr_in in
;
4015 struct sockaddr_in6 in6
;
4017 #ifdef HAVE_LOCAL_SOCKETS
4018 struct sockaddr_un un
;
4021 socklen_t len
= sizeof saddr
;
4023 s
= accept (channel
, &saddr
.sa
, &len
);
4032 if (code
== EWOULDBLOCK
)
4036 if (!NILP (ps
->log
))
4037 call3 (ps
->log
, server
, Qnil
,
4038 concat3 (build_string ("accept failed with code"),
4039 Fnumber_to_string (make_number (code
)),
4040 build_string ("\n")));
4046 /* Setup a new process to handle the connection. */
4048 /* Generate a unique identification of the caller, and build contact
4049 information for this process. */
4052 switch (saddr
.sa
.sa_family
)
4056 Lisp_Object args
[5];
4057 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4058 args
[0] = build_string ("%d.%d.%d.%d");
4059 args
[1] = make_number (*ip
++);
4060 args
[2] = make_number (*ip
++);
4061 args
[3] = make_number (*ip
++);
4062 args
[4] = make_number (*ip
++);
4063 host
= Fformat (5, args
);
4064 service
= make_number (ntohs (saddr
.in
.sin_port
));
4066 args
[0] = build_string (" <%s:%d>");
4069 caller
= Fformat (3, args
);
4076 Lisp_Object args
[9];
4077 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4079 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4080 for (i
= 0; i
< 8; i
++)
4081 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4082 host
= Fformat (9, args
);
4083 service
= make_number (ntohs (saddr
.in
.sin_port
));
4085 args
[0] = build_string (" <[%s]:%d>");
4088 caller
= Fformat (3, args
);
4093 #ifdef HAVE_LOCAL_SOCKETS
4097 caller
= Fnumber_to_string (make_number (connect_counter
));
4098 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4102 /* Create a new buffer name for this process if it doesn't have a
4103 filter. The new buffer name is based on the buffer name or
4104 process name of the server process concatenated with the caller
4107 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4111 buffer
= ps
->buffer
;
4113 buffer
= Fbuffer_name (buffer
);
4118 buffer
= concat2 (buffer
, caller
);
4119 buffer
= Fget_buffer_create (buffer
);
4123 /* Generate a unique name for the new server process. Combine the
4124 server process name with the caller identification. */
4126 name
= concat2 (ps
->name
, caller
);
4127 proc
= make_process (name
);
4129 chan_process
[s
] = proc
;
4132 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4135 fcntl (s
, F_SETFL
, O_NDELAY
);
4139 p
= XPROCESS (proc
);
4141 /* Build new contact information for this setup. */
4142 contact
= Fcopy_sequence (ps
->childp
);
4143 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4144 contact
= Fplist_put (contact
, QChost
, host
);
4145 if (!NILP (service
))
4146 contact
= Fplist_put (contact
, QCservice
, service
);
4147 contact
= Fplist_put (contact
, QCremote
,
4148 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4149 #ifdef HAVE_GETSOCKNAME
4151 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4152 contact
= Fplist_put (contact
, QClocal
,
4153 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4156 p
->childp
= contact
;
4157 p
->plist
= Fcopy_sequence (ps
->plist
);
4161 p
->sentinel
= ps
->sentinel
;
4162 p
->filter
= ps
->filter
;
4169 /* Client processes for accepted connections are not stopped initially. */
4170 if (!EQ (p
->filter
, Qt
))
4172 FD_SET (s
, &input_wait_mask
);
4173 FD_SET (s
, &non_keyboard_wait_mask
);
4176 if (s
> max_process_desc
)
4177 max_process_desc
= s
;
4179 /* Setup coding system for new process based on server process.
4180 This seems to be the proper thing to do, as the coding system
4181 of the new process should reflect the settings at the time the
4182 server socket was opened; not the current settings. */
4184 p
->decode_coding_system
= ps
->decode_coding_system
;
4185 p
->encode_coding_system
= ps
->encode_coding_system
;
4186 setup_process_coding_systems (proc
);
4188 p
->decoding_buf
= empty_unibyte_string
;
4189 p
->decoding_carryover
= 0;
4190 p
->encoding_buf
= empty_unibyte_string
;
4192 p
->inherit_coding_system_flag
4193 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4195 if (!NILP (ps
->log
))
4196 call3 (ps
->log
, server
, proc
,
4197 concat3 (build_string ("accept from "),
4198 (STRINGP (host
) ? host
: build_string ("-")),
4199 build_string ("\n")));
4201 if (!NILP (p
->sentinel
))
4202 exec_sentinel (proc
,
4203 concat3 (build_string ("open from "),
4204 (STRINGP (host
) ? host
: build_string ("-")),
4205 build_string ("\n")));
4208 /* This variable is different from waiting_for_input in keyboard.c.
4209 It is used to communicate to a lisp process-filter/sentinel (via the
4210 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4211 for user-input when that process-filter was called.
4212 waiting_for_input cannot be used as that is by definition 0 when
4213 lisp code is being evalled.
4214 This is also used in record_asynch_buffer_change.
4215 For that purpose, this must be 0
4216 when not inside wait_reading_process_output. */
4217 static int waiting_for_user_input_p
;
4220 wait_reading_process_output_unwind (Lisp_Object data
)
4222 waiting_for_user_input_p
= XINT (data
);
4226 /* This is here so breakpoints can be put on it. */
4228 wait_reading_process_output_1 (void)
4232 /* Use a wrapper around select to work around a bug in gdb 5.3.
4233 Normally, the wrapper is optimized away by inlining.
4235 If emacs is stopped inside select, the gdb backtrace doesn't
4236 show the function which called select, so it is practically
4237 impossible to step through wait_reading_process_output. */
4241 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4243 return select (n
, rfd
, wfd
, xfd
, tmo
);
4245 #define select select_wrapper
4248 /* Read and dispose of subprocess output while waiting for timeout to
4249 elapse and/or keyboard input to be available.
4252 timeout in seconds, or
4253 zero for no limit, or
4254 -1 means gobble data immediately available but don't wait for any.
4257 an additional duration to wait, measured in microseconds.
4258 If this is nonzero and time_limit is 0, then the timeout
4259 consists of MICROSECS only.
4261 READ_KBD is a lisp value:
4262 0 to ignore keyboard input, or
4263 1 to return when input is available, or
4264 -1 meaning caller will actually read the input, so don't throw to
4265 the quit handler, or
4267 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4268 output that arrives.
4270 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4271 (and gobble terminal input into the buffer if any arrives).
4273 If WAIT_PROC is specified, wait until something arrives from that
4274 process. The return value is true if we read some input from
4277 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4278 (suspending output from other processes). A negative value
4279 means don't run any timers either.
4281 If WAIT_PROC is specified, then the function returns true if we
4282 received input from that process before the timeout elapsed.
4283 Otherwise, return true if we received input from any process. */
4286 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4288 Lisp_Object wait_for_cell
,
4289 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4291 register int channel
, nfds
;
4292 SELECT_TYPE Available
;
4293 SELECT_TYPE Writeok
;
4295 int check_delay
, no_avail
;
4298 EMACS_TIME timeout
, end_time
;
4299 int wait_channel
= -1;
4300 int got_some_input
= 0;
4301 int count
= SPECPDL_INDEX ();
4303 FD_ZERO (&Available
);
4306 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4307 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4308 message ("Blocking call to accept-process-output with quit inhibited!!");
4310 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4311 if (wait_proc
!= NULL
)
4312 wait_channel
= wait_proc
->infd
;
4314 record_unwind_protect (wait_reading_process_output_unwind
,
4315 make_number (waiting_for_user_input_p
));
4316 waiting_for_user_input_p
= read_kbd
;
4318 /* Since we may need to wait several times,
4319 compute the absolute time to return at. */
4320 if (time_limit
|| microsecs
)
4322 EMACS_GET_TIME (end_time
);
4323 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4324 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4329 int timeout_reduced_for_timers
= 0;
4331 /* If calling from keyboard input, do not quit
4332 since we want to return C-g as an input character.
4333 Otherwise, do pending quit if requested. */
4338 process_pending_signals ();
4341 /* Exit now if the cell we're waiting for became non-nil. */
4342 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4345 /* Compute time from now till when time limit is up */
4346 /* Exit if already run out */
4347 if (time_limit
== -1)
4349 /* -1 specified for timeout means
4350 gobble output available now
4351 but don't wait at all. */
4353 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4355 else if (time_limit
|| microsecs
)
4357 EMACS_GET_TIME (timeout
);
4358 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4359 if (EMACS_TIME_NEG_P (timeout
))
4364 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4367 /* Normally we run timers here.
4368 But not if wait_for_cell; in those cases,
4369 the wait is supposed to be short,
4370 and those callers cannot handle running arbitrary Lisp code here. */
4371 if (NILP (wait_for_cell
)
4372 && just_wait_proc
>= 0)
4374 EMACS_TIME timer_delay
;
4378 int old_timers_run
= timers_run
;
4379 struct buffer
*old_buffer
= current_buffer
;
4380 Lisp_Object old_window
= selected_window
;
4382 timer_delay
= timer_check ();
4384 /* If a timer has run, this might have changed buffers
4385 an alike. Make read_key_sequence aware of that. */
4386 if (timers_run
!= old_timers_run
4387 && (old_buffer
!= current_buffer
4388 || !EQ (old_window
, selected_window
))
4389 && waiting_for_user_input_p
== -1)
4390 record_asynch_buffer_change ();
4392 if (timers_run
!= old_timers_run
&& do_display
)
4393 /* We must retry, since a timer may have requeued itself
4394 and that could alter the time_delay. */
4395 redisplay_preserve_echo_area (9);
4399 while (!detect_input_pending ());
4401 /* If there is unread keyboard input, also return. */
4403 && requeued_events_pending_p ())
4406 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4408 EMACS_TIME difference
;
4409 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4410 if (EMACS_TIME_NEG_P (difference
))
4412 timeout
= timer_delay
;
4413 timeout_reduced_for_timers
= 1;
4416 /* If time_limit is -1, we are not going to wait at all. */
4417 else if (time_limit
!= -1)
4419 /* This is so a breakpoint can be put here. */
4420 wait_reading_process_output_1 ();
4424 /* Cause C-g and alarm signals to take immediate action,
4425 and cause input available signals to zero out timeout.
4427 It is important that we do this before checking for process
4428 activity. If we get a SIGCHLD after the explicit checks for
4429 process activity, timeout is the only way we will know. */
4431 set_waiting_for_input (&timeout
);
4433 /* If status of something has changed, and no input is
4434 available, notify the user of the change right away. After
4435 this explicit check, we'll let the SIGCHLD handler zap
4436 timeout to get our attention. */
4437 if (update_tick
!= process_tick
)
4442 if (kbd_on_hold_p ())
4445 Atemp
= input_wait_mask
;
4448 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4449 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4451 #ifdef NON_BLOCKING_CONNECT
4452 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4456 (SELECT_TYPE
*)0, &timeout
)
4459 /* It's okay for us to do this and then continue with
4460 the loop, since timeout has already been zeroed out. */
4461 clear_waiting_for_input ();
4462 status_notify (NULL
);
4463 if (do_display
) redisplay_preserve_echo_area (13);
4467 /* Don't wait for output from a non-running process. Just
4468 read whatever data has already been received. */
4469 if (wait_proc
&& wait_proc
->raw_status_new
)
4470 update_status (wait_proc
);
4472 && ! EQ (wait_proc
->status
, Qrun
)
4473 && ! EQ (wait_proc
->status
, Qconnect
))
4475 int nread
, total_nread
= 0;
4477 clear_waiting_for_input ();
4478 XSETPROCESS (proc
, wait_proc
);
4480 /* Read data from the process, until we exhaust it. */
4481 while (wait_proc
->infd
>= 0)
4483 nread
= read_process_output (proc
, wait_proc
->infd
);
4490 total_nread
+= nread
;
4494 else if (nread
== -1 && EIO
== errno
)
4498 else if (nread
== -1 && EAGAIN
== errno
)
4502 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4506 if (total_nread
> 0 && do_display
)
4507 redisplay_preserve_echo_area (10);
4512 /* Wait till there is something to do */
4514 if (wait_proc
&& just_wait_proc
)
4516 if (wait_proc
->infd
< 0) /* Terminated */
4518 FD_SET (wait_proc
->infd
, &Available
);
4522 else if (!NILP (wait_for_cell
))
4524 Available
= non_process_wait_mask
;
4531 Available
= non_keyboard_wait_mask
;
4533 Available
= input_wait_mask
;
4534 Writeok
= write_mask
;
4535 #ifdef SELECT_CANT_DO_WRITE_MASK
4540 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4543 /* If frame size has changed or the window is newly mapped,
4544 redisplay now, before we start to wait. There is a race
4545 condition here; if a SIGIO arrives between now and the select
4546 and indicates that a frame is trashed, the select may block
4547 displaying a trashed screen. */
4548 if (frame_garbaged
&& do_display
)
4550 clear_waiting_for_input ();
4551 redisplay_preserve_echo_area (11);
4553 set_waiting_for_input (&timeout
);
4556 /* Skip the `select' call if input is available and we're
4557 waiting for keyboard input or a cell change (which can be
4558 triggered by processing X events). In the latter case, set
4559 nfds to 1 to avoid breaking the loop. */
4561 if ((read_kbd
|| !NILP (wait_for_cell
))
4562 && detect_input_pending ())
4564 nfds
= read_kbd
? 0 : 1;
4571 #ifdef ADAPTIVE_READ_BUFFERING
4572 /* Set the timeout for adaptive read buffering if any
4573 process has non-zero read_output_skip and non-zero
4574 read_output_delay, and we are not reading output for a
4575 specific wait_channel. It is not executed if
4576 Vprocess_adaptive_read_buffering is nil. */
4577 if (process_output_skip
&& check_delay
> 0)
4579 int usecs
= EMACS_USECS (timeout
);
4580 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4581 usecs
= READ_OUTPUT_DELAY_MAX
;
4582 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4584 proc
= chan_process
[channel
];
4587 /* Find minimum non-zero read_output_delay among the
4588 processes with non-zero read_output_skip. */
4589 if (XPROCESS (proc
)->read_output_delay
> 0)
4592 if (!XPROCESS (proc
)->read_output_skip
)
4594 FD_CLR (channel
, &Available
);
4595 XPROCESS (proc
)->read_output_skip
= 0;
4596 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4597 usecs
= XPROCESS (proc
)->read_output_delay
;
4600 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4601 process_output_skip
= 0;
4604 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
4606 #elif defined (HAVE_NS)
4611 (max (max_process_desc
, max_input_desc
) + 1,
4613 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4614 (SELECT_TYPE
*)0, &timeout
);
4617 /* GnuTLS buffers data internally. In lowat mode it leaves
4618 some data in the TCP buffers so that select works, but
4619 with custom pull/push functions we need to check if some
4620 data is available in the buffers manually. */
4622 wait_proc
&& wait_proc
->gnutls_p
/* Check for valid process. */
4623 /* Do we have pending data? */
4624 && emacs_gnutls_record_check_pending (wait_proc
->gnutls_state
) > 0)
4627 /* Set to Available. */
4628 FD_SET (wait_proc
->infd
, &Available
);
4635 /* Make C-g and alarm signals set flags again */
4636 clear_waiting_for_input ();
4638 /* If we woke up due to SIGWINCH, actually change size now. */
4639 do_pending_window_change (0);
4641 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4642 /* We wanted the full specified time, so return now. */
4646 if (xerrno
== EINTR
)
4648 else if (xerrno
== EBADF
)
4651 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4652 the child's closure of the pts gives the parent a SIGHUP, and
4653 the ptc file descriptor is automatically closed,
4654 yielding EBADF here or at select() call above.
4655 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4656 in m/ibmrt-aix.h), and here we just ignore the select error.
4657 Cleanup occurs c/o status_notify after SIGCLD. */
4658 no_avail
= 1; /* Cannot depend on values returned */
4664 error ("select error: %s", emacs_strerror (xerrno
));
4669 FD_ZERO (&Available
);
4673 #if 0 /* When polling is used, interrupt_input is 0,
4674 so get_input_pending should read the input.
4675 So this should not be needed. */
4676 /* If we are using polling for input,
4677 and we see input available, make it get read now.
4678 Otherwise it might not actually get read for a second.
4679 And on hpux, since we turn off polling in wait_reading_process_output,
4680 it might never get read at all if we don't spend much time
4681 outside of wait_reading_process_output. */
4682 if (read_kbd
&& interrupt_input
4683 && keyboard_bit_set (&Available
)
4684 && input_polling_used ())
4685 kill (getpid (), SIGALRM
);
4688 /* Check for keyboard input */
4689 /* If there is any, return immediately
4690 to give it higher priority than subprocesses */
4694 int old_timers_run
= timers_run
;
4695 struct buffer
*old_buffer
= current_buffer
;
4696 Lisp_Object old_window
= selected_window
;
4699 if (detect_input_pending_run_timers (do_display
))
4701 swallow_events (do_display
);
4702 if (detect_input_pending_run_timers (do_display
))
4706 /* If a timer has run, this might have changed buffers
4707 an alike. Make read_key_sequence aware of that. */
4708 if (timers_run
!= old_timers_run
4709 && waiting_for_user_input_p
== -1
4710 && (old_buffer
!= current_buffer
4711 || !EQ (old_window
, selected_window
)))
4712 record_asynch_buffer_change ();
4718 /* If there is unread keyboard input, also return. */
4720 && requeued_events_pending_p ())
4723 /* If we are not checking for keyboard input now,
4724 do process events (but don't run any timers).
4725 This is so that X events will be processed.
4726 Otherwise they may have to wait until polling takes place.
4727 That would causes delays in pasting selections, for example.
4729 (We used to do this only if wait_for_cell.) */
4730 if (read_kbd
== 0 && detect_input_pending ())
4732 swallow_events (do_display
);
4733 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4734 if (detect_input_pending ())
4739 /* Exit now if the cell we're waiting for became non-nil. */
4740 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4744 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4745 go read it. This can happen with X on BSD after logging out.
4746 In that case, there really is no input and no SIGIO,
4747 but select says there is input. */
4749 if (read_kbd
&& interrupt_input
4750 && keyboard_bit_set (&Available
) && ! noninteractive
)
4751 kill (getpid (), SIGIO
);
4755 got_some_input
|= nfds
> 0;
4757 /* If checking input just got us a size-change event from X,
4758 obey it now if we should. */
4759 if (read_kbd
|| ! NILP (wait_for_cell
))
4760 do_pending_window_change (0);
4762 /* Check for data from a process. */
4763 if (no_avail
|| nfds
== 0)
4766 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4768 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4769 if (FD_ISSET (channel
, &Available
)
4771 && (d
->condition
& FOR_READ
) != 0)
4772 d
->func (channel
, d
->data
, 1);
4773 if (FD_ISSET (channel
, &write_mask
)
4775 && (d
->condition
& FOR_WRITE
) != 0)
4776 d
->func (channel
, d
->data
, 0);
4779 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4781 if (FD_ISSET (channel
, &Available
)
4782 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4783 && !FD_ISSET (channel
, &non_process_wait_mask
))
4787 /* If waiting for this channel, arrange to return as
4788 soon as no more input to be processed. No more
4790 if (wait_channel
== channel
)
4796 proc
= chan_process
[channel
];
4800 /* If this is a server stream socket, accept connection. */
4801 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4803 server_accept_connection (proc
, channel
);
4807 /* Read data from the process, starting with our
4808 buffered-ahead character if we have one. */
4810 nread
= read_process_output (proc
, channel
);
4813 /* Since read_process_output can run a filter,
4814 which can call accept-process-output,
4815 don't try to read from any other processes
4816 before doing the select again. */
4817 FD_ZERO (&Available
);
4820 redisplay_preserve_echo_area (12);
4823 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4826 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4827 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4829 else if (nread
== -1 && errno
== EAGAIN
)
4833 else if (nread
== -1 && errno
== EAGAIN
)
4835 /* Note that we cannot distinguish between no input
4836 available now and a closed pipe.
4837 With luck, a closed pipe will be accompanied by
4838 subprocess termination and SIGCHLD. */
4839 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4841 #endif /* O_NDELAY */
4842 #endif /* O_NONBLOCK */
4844 /* On some OSs with ptys, when the process on one end of
4845 a pty exits, the other end gets an error reading with
4846 errno = EIO instead of getting an EOF (0 bytes read).
4847 Therefore, if we get an error reading and errno =
4848 EIO, just continue, because the child process has
4849 exited and should clean itself up soon (e.g. when we
4852 However, it has been known to happen that the SIGCHLD
4853 got lost. So raise the signal again just in case.
4855 else if (nread
== -1 && errno
== EIO
)
4857 /* Clear the descriptor now, so we only raise the
4858 signal once. Don't do this if `process' is only
4860 if (XPROCESS (proc
)->pid
!= -2)
4862 FD_CLR (channel
, &input_wait_mask
);
4863 FD_CLR (channel
, &non_keyboard_wait_mask
);
4865 kill (getpid (), SIGCHLD
);
4868 #endif /* HAVE_PTYS */
4869 /* If we can detect process termination, don't consider the process
4870 gone just because its pipe is closed. */
4872 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4877 /* Preserve status of processes already terminated. */
4878 XPROCESS (proc
)->tick
= ++process_tick
;
4879 deactivate_process (proc
);
4880 if (XPROCESS (proc
)->raw_status_new
)
4881 update_status (XPROCESS (proc
));
4882 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4883 XPROCESS (proc
)->status
4884 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4887 #ifdef NON_BLOCKING_CONNECT
4888 if (FD_ISSET (channel
, &Writeok
)
4889 && FD_ISSET (channel
, &connect_wait_mask
))
4891 struct Lisp_Process
*p
;
4893 FD_CLR (channel
, &connect_wait_mask
);
4894 FD_CLR (channel
, &write_mask
);
4895 if (--num_pending_connects
< 0)
4898 proc
= chan_process
[channel
];
4902 p
= XPROCESS (proc
);
4905 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4906 So only use it on systems where it is known to work. */
4908 socklen_t xlen
= sizeof (xerrno
);
4909 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4914 struct sockaddr pname
;
4915 int pnamelen
= sizeof (pname
);
4917 /* If connection failed, getpeername will fail. */
4919 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4921 /* Obtain connect failure code through error slippage. */
4924 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4931 p
->tick
= ++process_tick
;
4932 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4933 deactivate_process (proc
);
4938 /* Execute the sentinel here. If we had relied on
4939 status_notify to do it later, it will read input
4940 from the process before calling the sentinel. */
4941 exec_sentinel (proc
, build_string ("open\n"));
4942 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4944 FD_SET (p
->infd
, &input_wait_mask
);
4945 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4949 #endif /* NON_BLOCKING_CONNECT */
4950 } /* end for each file descriptor */
4951 } /* end while exit conditions not met */
4953 unbind_to (count
, Qnil
);
4955 /* If calling from keyboard input, do not quit
4956 since we want to return C-g as an input character.
4957 Otherwise, do pending quit if requested. */
4960 /* Prevent input_pending from remaining set if we quit. */
4961 clear_input_pending ();
4965 return got_some_input
;
4968 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4971 read_process_output_call (Lisp_Object fun_and_args
)
4973 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4977 read_process_output_error_handler (Lisp_Object error_val
)
4979 cmd_error_internal (error_val
, "error in process filter: ");
4981 update_echo_area ();
4982 Fsleep_for (make_number (2), Qnil
);
4986 /* Read pending output from the process channel,
4987 starting with our buffered-ahead character if we have one.
4988 Yield number of decoded characters read.
4990 This function reads at most 4096 characters.
4991 If you want to read all available subprocess output,
4992 you must call it repeatedly until it returns zero.
4994 The characters read are decoded according to PROC's coding-system
4998 read_process_output (Lisp_Object proc
, register int channel
)
5000 register ssize_t nbytes
;
5002 register Lisp_Object outstream
;
5003 register struct Lisp_Process
*p
= XPROCESS (proc
);
5004 register EMACS_INT opoint
;
5005 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5006 int carryover
= p
->decoding_carryover
;
5008 int count
= SPECPDL_INDEX ();
5009 Lisp_Object odeactivate
;
5011 chars
= (char *) alloca (carryover
+ readmax
);
5013 /* See the comment above. */
5014 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5016 #ifdef DATAGRAM_SOCKETS
5017 /* We have a working select, so proc_buffered_char is always -1. */
5018 if (DATAGRAM_CHAN_P (channel
))
5020 socklen_t len
= datagram_address
[channel
].len
;
5021 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5022 0, datagram_address
[channel
].sa
, &len
);
5027 int buffered
= 0 <= proc_buffered_char
[channel
];
5030 chars
[carryover
] = proc_buffered_char
[channel
];
5031 proc_buffered_char
[channel
] = -1;
5034 if (XPROCESS (proc
)->gnutls_p
)
5035 nbytes
= emacs_gnutls_read (XPROCESS (proc
),
5036 chars
+ carryover
+ buffered
,
5037 readmax
- buffered
);
5040 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5041 readmax
- buffered
);
5042 #ifdef ADAPTIVE_READ_BUFFERING
5043 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5045 int delay
= p
->read_output_delay
;
5048 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5051 process_output_delay_count
++;
5052 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5055 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5057 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5059 process_output_delay_count
--;
5061 p
->read_output_delay
= delay
;
5064 p
->read_output_skip
= 1;
5065 process_output_skip
= 1;
5070 nbytes
+= buffered
&& nbytes
<= 0;
5073 p
->decoding_carryover
= 0;
5075 /* At this point, NBYTES holds number of bytes just received
5076 (including the one in proc_buffered_char[channel]). */
5079 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5081 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5084 /* Now set NBYTES how many bytes we must decode. */
5085 nbytes
+= carryover
;
5087 odeactivate
= Vdeactivate_mark
;
5088 /* There's no good reason to let process filters change the current
5089 buffer, and many callers of accept-process-output, sit-for, and
5090 friends don't expect current-buffer to be changed from under them. */
5091 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5093 /* Read and dispose of the process output. */
5094 outstream
= p
->filter
;
5095 if (!NILP (outstream
))
5098 int outer_running_asynch_code
= running_asynch_code
;
5099 int waiting
= waiting_for_user_input_p
;
5101 /* No need to gcpro these, because all we do with them later
5102 is test them for EQness, and none of them should be a string. */
5104 Lisp_Object obuffer
, okeymap
;
5105 XSETBUFFER (obuffer
, current_buffer
);
5106 okeymap
= BVAR (current_buffer
, keymap
);
5109 /* We inhibit quit here instead of just catching it so that
5110 hitting ^G when a filter happens to be running won't screw
5112 specbind (Qinhibit_quit
, Qt
);
5113 specbind (Qlast_nonmenu_event
, Qt
);
5115 /* In case we get recursively called,
5116 and we already saved the match data nonrecursively,
5117 save the same match data in safely recursive fashion. */
5118 if (outer_running_asynch_code
)
5121 /* Don't clobber the CURRENT match data, either! */
5122 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5123 restore_search_regs ();
5124 record_unwind_save_match_data ();
5125 Fset_match_data (tem
, Qt
);
5128 /* For speed, if a search happens within this code,
5129 save the match data in a special nonrecursive fashion. */
5130 running_asynch_code
= 1;
5132 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5133 text
= coding
->dst_object
;
5134 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5135 /* A new coding system might be found. */
5136 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5138 p
->decode_coding_system
= Vlast_coding_system_used
;
5140 /* Don't call setup_coding_system for
5141 proc_decode_coding_system[channel] here. It is done in
5142 detect_coding called via decode_coding above. */
5144 /* If a coding system for encoding is not yet decided, we set
5145 it as the same as coding-system for decoding.
5147 But, before doing that we must check if
5148 proc_encode_coding_system[p->outfd] surely points to a
5149 valid memory because p->outfd will be changed once EOF is
5150 sent to the process. */
5151 if (NILP (p
->encode_coding_system
)
5152 && proc_encode_coding_system
[p
->outfd
])
5154 p
->encode_coding_system
5155 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5156 setup_coding_system (p
->encode_coding_system
,
5157 proc_encode_coding_system
[p
->outfd
]);
5161 if (coding
->carryover_bytes
> 0)
5163 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5164 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5165 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5166 coding
->carryover_bytes
);
5167 p
->decoding_carryover
= coding
->carryover_bytes
;
5169 if (SBYTES (text
) > 0)
5170 internal_condition_case_1 (read_process_output_call
,
5172 Fcons (proc
, Fcons (text
, Qnil
))),
5173 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5174 read_process_output_error_handler
);
5176 /* If we saved the match data nonrecursively, restore it now. */
5177 restore_search_regs ();
5178 running_asynch_code
= outer_running_asynch_code
;
5180 /* Restore waiting_for_user_input_p as it was
5181 when we were called, in case the filter clobbered it. */
5182 waiting_for_user_input_p
= waiting
;
5184 #if 0 /* Call record_asynch_buffer_change unconditionally,
5185 because we might have changed minor modes or other things
5186 that affect key bindings. */
5187 if (! EQ (Fcurrent_buffer (), obuffer
)
5188 || ! EQ (current_buffer
->keymap
, okeymap
))
5190 /* But do it only if the caller is actually going to read events.
5191 Otherwise there's no need to make him wake up, and it could
5192 cause trouble (for example it would make sit_for return). */
5193 if (waiting_for_user_input_p
== -1)
5194 record_asynch_buffer_change ();
5197 /* If no filter, write into buffer if it isn't dead. */
5198 else if (!NILP (p
->buffer
) && !NILP (BVAR (XBUFFER (p
->buffer
), name
)))
5200 Lisp_Object old_read_only
;
5201 EMACS_INT old_begv
, old_zv
;
5202 EMACS_INT old_begv_byte
, old_zv_byte
;
5203 EMACS_INT before
, before_byte
;
5204 EMACS_INT opoint_byte
;
5208 Fset_buffer (p
->buffer
);
5210 opoint_byte
= PT_BYTE
;
5211 old_read_only
= BVAR (current_buffer
, read_only
);
5214 old_begv_byte
= BEGV_BYTE
;
5215 old_zv_byte
= ZV_BYTE
;
5217 BVAR (current_buffer
, read_only
) = Qnil
;
5219 /* Insert new output into buffer
5220 at the current end-of-output marker,
5221 thus preserving logical ordering of input and output. */
5222 if (XMARKER (p
->mark
)->buffer
)
5223 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5224 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5227 SET_PT_BOTH (ZV
, ZV_BYTE
);
5229 before_byte
= PT_BYTE
;
5231 /* If the output marker is outside of the visible region, save
5232 the restriction and widen. */
5233 if (! (BEGV
<= PT
&& PT
<= ZV
))
5236 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5237 text
= coding
->dst_object
;
5238 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5239 /* A new coding system might be found. See the comment in the
5240 similar code in the previous `if' block. */
5241 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5243 p
->decode_coding_system
= Vlast_coding_system_used
;
5244 if (NILP (p
->encode_coding_system
)
5245 && proc_encode_coding_system
[p
->outfd
])
5247 p
->encode_coding_system
5248 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5249 setup_coding_system (p
->encode_coding_system
,
5250 proc_encode_coding_system
[p
->outfd
]);
5253 if (coding
->carryover_bytes
> 0)
5255 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5256 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5257 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5258 coding
->carryover_bytes
);
5259 p
->decoding_carryover
= coding
->carryover_bytes
;
5261 /* Adjust the multibyteness of TEXT to that of the buffer. */
5262 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5263 != ! STRING_MULTIBYTE (text
))
5264 text
= (STRING_MULTIBYTE (text
)
5265 ? Fstring_as_unibyte (text
)
5266 : Fstring_to_multibyte (text
));
5267 /* Insert before markers in case we are inserting where
5268 the buffer's mark is, and the user's next command is Meta-y. */
5269 insert_from_string_before_markers (text
, 0, 0,
5270 SCHARS (text
), SBYTES (text
), 0);
5272 /* Make sure the process marker's position is valid when the
5273 process buffer is changed in the signal_after_change above.
5274 W3 is known to do that. */
5275 if (BUFFERP (p
->buffer
)
5276 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5277 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5279 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5281 update_mode_lines
++;
5283 /* Make sure opoint and the old restrictions
5284 float ahead of any new text just as point would. */
5285 if (opoint
>= before
)
5287 opoint
+= PT
- before
;
5288 opoint_byte
+= PT_BYTE
- before_byte
;
5290 if (old_begv
> before
)
5292 old_begv
+= PT
- before
;
5293 old_begv_byte
+= PT_BYTE
- before_byte
;
5295 if (old_zv
>= before
)
5297 old_zv
+= PT
- before
;
5298 old_zv_byte
+= PT_BYTE
- before_byte
;
5301 /* If the restriction isn't what it should be, set it. */
5302 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5303 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5306 BVAR (current_buffer
, read_only
) = old_read_only
;
5307 SET_PT_BOTH (opoint
, opoint_byte
);
5309 /* Handling the process output should not deactivate the mark. */
5310 Vdeactivate_mark
= odeactivate
;
5312 unbind_to (count
, Qnil
);
5316 /* Sending data to subprocess */
5318 static jmp_buf send_process_frame
;
5319 static Lisp_Object process_sent_to
;
5321 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
5322 static void send_process_trap (int) NO_RETURN
;
5326 send_process_trap (int ignore
)
5328 SIGNAL_THREAD_CHECK (SIGPIPE
);
5329 sigunblock (sigmask (SIGPIPE
));
5330 longjmp (send_process_frame
, 1);
5333 /* Send some data to process PROC.
5334 BUF is the beginning of the data; LEN is the number of characters.
5335 OBJECT is the Lisp object that the data comes from. If OBJECT is
5336 nil or t, it means that the data comes from C string.
5338 If OBJECT is not nil, the data is encoded by PROC's coding-system
5339 for encoding before it is sent.
5341 This function can evaluate Lisp code and can garbage collect. */
5344 send_process (volatile Lisp_Object proc
, const char *volatile buf
,
5345 volatile EMACS_INT len
, volatile Lisp_Object object
)
5347 /* Use volatile to protect variables from being clobbered by longjmp. */
5348 struct Lisp_Process
*p
= XPROCESS (proc
);
5350 struct coding_system
*coding
;
5351 struct gcpro gcpro1
;
5352 void (*volatile old_sigpipe
) (int);
5356 if (p
->raw_status_new
)
5358 if (! EQ (p
->status
, Qrun
))
5359 error ("Process %s not running", SDATA (p
->name
));
5361 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5363 coding
= proc_encode_coding_system
[p
->outfd
];
5364 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5366 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5367 || (BUFFERP (object
)
5368 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5371 p
->encode_coding_system
5372 = complement_process_encoding_system (p
->encode_coding_system
);
5373 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5375 /* The coding system for encoding was changed to raw-text
5376 because we sent a unibyte text previously. Now we are
5377 sending a multibyte text, thus we must encode it by the
5378 original coding system specified for the current process.
5380 Another reason we comming here is that the coding system
5381 was just complemented and new one was returned by
5382 complement_process_encoding_system. */
5383 setup_coding_system (p
->encode_coding_system
, coding
);
5384 Vlast_coding_system_used
= p
->encode_coding_system
;
5386 coding
->src_multibyte
= 1;
5390 /* For sending a unibyte text, character code conversion should
5391 not take place but EOL conversion should. So, setup raw-text
5392 or one of the subsidiary if we have not yet done it. */
5393 if (CODING_REQUIRE_ENCODING (coding
))
5395 if (CODING_REQUIRE_FLUSHING (coding
))
5397 /* But, before changing the coding, we must flush out data. */
5398 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5399 send_process (proc
, "", 0, Qt
);
5400 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5402 setup_coding_system (raw_text_coding_system
5403 (Vlast_coding_system_used
),
5405 coding
->src_multibyte
= 0;
5408 coding
->dst_multibyte
= 0;
5410 if (CODING_REQUIRE_ENCODING (coding
))
5412 coding
->dst_object
= Qt
;
5413 if (BUFFERP (object
))
5415 EMACS_INT from_byte
, from
, to
;
5416 EMACS_INT save_pt
, save_pt_byte
;
5417 struct buffer
*cur
= current_buffer
;
5419 set_buffer_internal (XBUFFER (object
));
5420 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5422 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5423 from
= BYTE_TO_CHAR (from_byte
);
5424 to
= BYTE_TO_CHAR (from_byte
+ len
);
5425 TEMP_SET_PT_BOTH (from
, from_byte
);
5426 encode_coding_object (coding
, object
, from
, from_byte
,
5427 to
, from_byte
+ len
, Qt
);
5428 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5429 set_buffer_internal (cur
);
5431 else if (STRINGP (object
))
5433 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5434 SBYTES (object
), Qt
);
5438 coding
->dst_object
= make_unibyte_string (buf
, len
);
5439 coding
->produced
= len
;
5442 len
= coding
->produced
;
5443 object
= coding
->dst_object
;
5444 buf
= SSDATA (object
);
5447 if (pty_max_bytes
== 0)
5449 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5450 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5451 if (pty_max_bytes
< 0)
5452 pty_max_bytes
= 250;
5454 pty_max_bytes
= 250;
5456 /* Deduct one, to leave space for the eof. */
5460 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5461 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5462 when returning with longjmp despite being declared volatile. */
5463 if (!setjmp (send_process_frame
))
5465 p
= XPROCESS (proc
); /* Repair any setjmp clobbering. */
5467 process_sent_to
= proc
;
5470 EMACS_INT
this = len
;
5472 /* Send this batch, using one or more write calls. */
5475 EMACS_INT written
= 0;
5476 int outfd
= p
->outfd
;
5477 old_sigpipe
= (void (*) (int)) signal (SIGPIPE
, send_process_trap
);
5478 #ifdef DATAGRAM_SOCKETS
5479 if (DATAGRAM_CHAN_P (outfd
))
5481 rv
= sendto (outfd
, buf
, this,
5482 0, datagram_address
[outfd
].sa
,
5483 datagram_address
[outfd
].len
);
5486 else if (errno
== EMSGSIZE
)
5488 signal (SIGPIPE
, old_sigpipe
);
5489 report_file_error ("sending datagram",
5490 Fcons (proc
, Qnil
));
5497 if (XPROCESS (proc
)->gnutls_p
)
5498 written
= emacs_gnutls_write (XPROCESS (proc
),
5502 written
= emacs_write (outfd
, buf
, this);
5503 rv
= (written
? 0 : -1);
5504 #ifdef ADAPTIVE_READ_BUFFERING
5505 if (p
->read_output_delay
> 0
5506 && p
->adaptive_read_buffering
== 1)
5508 p
->read_output_delay
= 0;
5509 process_output_delay_count
--;
5510 p
->read_output_skip
= 0;
5514 signal (SIGPIPE
, old_sigpipe
);
5520 || errno
== EWOULDBLOCK
5526 /* Buffer is full. Wait, accepting input;
5527 that may allow the program
5528 to finish doing output and read more. */
5530 EMACS_INT offset
= 0;
5532 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5533 /* A gross hack to work around a bug in FreeBSD.
5534 In the following sequence, read(2) returns
5538 write(2) 954 bytes, get EAGAIN
5539 read(2) 1024 bytes in process_read_output
5540 read(2) 11 bytes in process_read_output
5542 That is, read(2) returns more bytes than have
5543 ever been written successfully. The 1033 bytes
5544 read are the 1022 bytes written successfully
5545 after processing (for example with CRs added if
5546 the terminal is set up that way which it is
5547 here). The same bytes will be seen again in a
5548 later read(2), without the CRs. */
5550 if (errno
== EAGAIN
)
5553 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5555 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5557 /* Running filters might relocate buffers or strings.
5558 Arrange to relocate BUF. */
5559 if (BUFFERP (object
))
5560 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
),
5561 (unsigned char *) buf
);
5562 else if (STRINGP (object
))
5563 offset
= buf
- SSDATA (object
);
5565 #ifdef EMACS_HAS_USECS
5566 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5568 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5571 if (BUFFERP (object
))
5572 buf
= (char *) BUF_BYTE_ADDRESS (XBUFFER (object
),
5574 else if (STRINGP (object
))
5575 buf
= offset
+ SSDATA (object
);
5578 /* This is a real error. */
5579 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5589 signal (SIGPIPE
, old_sigpipe
);
5590 proc
= process_sent_to
;
5591 p
= XPROCESS (proc
);
5592 p
->raw_status_new
= 0;
5593 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5594 p
->tick
= ++process_tick
;
5595 deactivate_process (proc
);
5596 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5602 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5604 doc
: /* Send current contents of region as input to PROCESS.
5605 PROCESS may be a process, a buffer, the name of a process or buffer, or
5606 nil, indicating the current buffer's process.
5607 Called from program, takes three arguments, PROCESS, START and END.
5608 If the region is more than 500 characters long,
5609 it is sent in several bunches. This may happen even for shorter regions.
5610 Output from processes can arrive in between bunches. */)
5611 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5614 EMACS_INT start1
, end1
;
5616 proc
= get_process (process
);
5617 validate_region (&start
, &end
);
5619 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5620 move_gap (XINT (start
));
5622 start1
= CHAR_TO_BYTE (XINT (start
));
5623 end1
= CHAR_TO_BYTE (XINT (end
));
5624 send_process (proc
, (char *) BYTE_POS_ADDR (start1
), end1
- start1
,
5625 Fcurrent_buffer ());
5630 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5632 doc
: /* Send PROCESS the contents of STRING as input.
5633 PROCESS may be a process, a buffer, the name of a process or buffer, or
5634 nil, indicating the current buffer's process.
5635 If STRING is more than 500 characters long,
5636 it is sent in several bunches. This may happen even for shorter strings.
5637 Output from processes can arrive in between bunches. */)
5638 (Lisp_Object process
, Lisp_Object string
)
5641 CHECK_STRING (string
);
5642 proc
= get_process (process
);
5643 send_process (proc
, SSDATA (string
),
5644 SBYTES (string
), string
);
5648 /* Return the foreground process group for the tty/pty that
5649 the process P uses. */
5651 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5656 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5659 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5660 master side. Try the slave side. */
5661 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5665 ioctl (fd
, TIOCGPGRP
, &gid
);
5669 #endif /* defined (TIOCGPGRP ) */
5674 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5675 Sprocess_running_child_p
, 0, 1, 0,
5676 doc
: /* Return t if PROCESS has given the terminal to a child.
5677 If the operating system does not make it possible to find out,
5678 return t unconditionally. */)
5679 (Lisp_Object process
)
5681 /* Initialize in case ioctl doesn't exist or gives an error,
5682 in a way that will cause returning t. */
5685 struct Lisp_Process
*p
;
5687 proc
= get_process (process
);
5688 p
= XPROCESS (proc
);
5690 if (!EQ (p
->type
, Qreal
))
5691 error ("Process %s is not a subprocess",
5694 error ("Process %s is not active",
5697 gid
= emacs_get_tty_pgrp (p
);
5704 /* send a signal number SIGNO to PROCESS.
5705 If CURRENT_GROUP is t, that means send to the process group
5706 that currently owns the terminal being used to communicate with PROCESS.
5707 This is used for various commands in shell mode.
5708 If CURRENT_GROUP is lambda, that means send to the process group
5709 that currently owns the terminal, but only if it is NOT the shell itself.
5711 If NOMSG is zero, insert signal-announcements into process's buffers
5714 If we can, we try to signal PROCESS by sending control characters
5715 down the pty. This allows us to signal inferiors who have changed
5716 their uid, for which killpg would return an EPERM error. */
5719 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5723 register struct Lisp_Process
*p
;
5727 proc
= get_process (process
);
5728 p
= XPROCESS (proc
);
5730 if (!EQ (p
->type
, Qreal
))
5731 error ("Process %s is not a subprocess",
5734 error ("Process %s is not active",
5738 current_group
= Qnil
;
5740 /* If we are using pgrps, get a pgrp number and make it negative. */
5741 if (NILP (current_group
))
5742 /* Send the signal to the shell's process group. */
5746 #ifdef SIGNALS_VIA_CHARACTERS
5747 /* If possible, send signals to the entire pgrp
5748 by sending an input character to it. */
5751 cc_t
*sig_char
= NULL
;
5753 tcgetattr (p
->infd
, &t
);
5758 sig_char
= &t
.c_cc
[VINTR
];
5762 sig_char
= &t
.c_cc
[VQUIT
];
5766 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5767 sig_char
= &t
.c_cc
[VSWTCH
];
5769 sig_char
= &t
.c_cc
[VSUSP
];
5774 if (sig_char
&& *sig_char
!= CDISABLE
)
5776 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5779 /* If we can't send the signal with a character,
5780 fall through and send it another way. */
5782 /* The code above may fall through if it can't
5783 handle the signal. */
5784 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5787 /* Get the current pgrp using the tty itself, if we have that.
5788 Otherwise, use the pty to get the pgrp.
5789 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5790 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5791 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5792 His patch indicates that if TIOCGPGRP returns an error, then
5793 we should just assume that p->pid is also the process group id. */
5795 gid
= emacs_get_tty_pgrp (p
);
5798 /* If we can't get the information, assume
5799 the shell owns the tty. */
5802 /* It is not clear whether anything really can set GID to -1.
5803 Perhaps on some system one of those ioctls can or could do so.
5804 Or perhaps this is vestigial. */
5807 #else /* ! defined (TIOCGPGRP ) */
5808 /* Can't select pgrps on this system, so we know that
5809 the child itself heads the pgrp. */
5811 #endif /* ! defined (TIOCGPGRP ) */
5813 /* If current_group is lambda, and the shell owns the terminal,
5814 don't send any signal. */
5815 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5823 p
->raw_status_new
= 0;
5825 p
->tick
= ++process_tick
;
5828 status_notify (NULL
);
5829 redisplay_preserve_echo_area (13);
5832 #endif /* ! defined (SIGCONT) */
5836 flush_pending_output (p
->infd
);
5840 /* If we don't have process groups, send the signal to the immediate
5841 subprocess. That isn't really right, but it's better than any
5842 obvious alternative. */
5845 kill (p
->pid
, signo
);
5849 /* gid may be a pid, or minus a pgrp's number */
5851 if (!NILP (current_group
))
5853 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5854 EMACS_KILLPG (gid
, signo
);
5861 #else /* ! defined (TIOCSIGSEND) */
5862 EMACS_KILLPG (gid
, signo
);
5863 #endif /* ! defined (TIOCSIGSEND) */
5866 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5867 doc
: /* Interrupt process PROCESS.
5868 PROCESS may be a process, a buffer, or the name of a process or buffer.
5869 No arg or nil means current buffer's process.
5870 Second arg CURRENT-GROUP non-nil means send signal to
5871 the current process-group of the process's controlling terminal
5872 rather than to the process's own process group.
5873 If the process is a shell, this means interrupt current subjob
5874 rather than the shell.
5876 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5877 don't send the signal. */)
5878 (Lisp_Object process
, Lisp_Object current_group
)
5880 process_send_signal (process
, SIGINT
, current_group
, 0);
5884 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5885 doc
: /* Kill process PROCESS. May be process or name of one.
5886 See function `interrupt-process' for more details on usage. */)
5887 (Lisp_Object process
, Lisp_Object current_group
)
5889 process_send_signal (process
, SIGKILL
, current_group
, 0);
5893 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5894 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5895 See function `interrupt-process' for more details on usage. */)
5896 (Lisp_Object process
, Lisp_Object current_group
)
5898 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5902 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5903 doc
: /* Stop process PROCESS. May be process or name of one.
5904 See function `interrupt-process' for more details on usage.
5905 If PROCESS is a network or serial process, inhibit handling of incoming
5907 (Lisp_Object process
, Lisp_Object current_group
)
5909 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5911 struct Lisp_Process
*p
;
5913 p
= XPROCESS (process
);
5914 if (NILP (p
->command
)
5917 FD_CLR (p
->infd
, &input_wait_mask
);
5918 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5924 error ("No SIGTSTP support");
5926 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5931 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5932 doc
: /* Continue process PROCESS. May be process or name of one.
5933 See function `interrupt-process' for more details on usage.
5934 If PROCESS is a network or serial process, resume handling of incoming
5936 (Lisp_Object process
, Lisp_Object current_group
)
5938 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5940 struct Lisp_Process
*p
;
5942 p
= XPROCESS (process
);
5943 if (EQ (p
->command
, Qt
)
5945 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5947 FD_SET (p
->infd
, &input_wait_mask
);
5948 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5950 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5951 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5952 #else /* not WINDOWSNT */
5953 tcflush (p
->infd
, TCIFLUSH
);
5954 #endif /* not WINDOWSNT */
5960 process_send_signal (process
, SIGCONT
, current_group
, 0);
5962 error ("No SIGCONT support");
5967 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5968 2, 2, "sProcess (name or number): \nnSignal code: ",
5969 doc
: /* Send PROCESS the signal with code SIGCODE.
5970 PROCESS may also be a number specifying the process id of the
5971 process to signal; in this case, the process need not be a child of
5973 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5974 (Lisp_Object process
, Lisp_Object sigcode
)
5978 if (INTEGERP (process
))
5980 pid
= XINT (process
);
5984 if (FLOATP (process
))
5986 pid
= (pid_t
) XFLOAT_DATA (process
);
5990 if (STRINGP (process
))
5993 if (tem
= Fget_process (process
), NILP (tem
))
5995 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6002 process
= get_process (process
);
6007 CHECK_PROCESS (process
);
6008 pid
= XPROCESS (process
)->pid
;
6010 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6014 #define parse_signal(NAME, VALUE) \
6015 else if (!xstrcasecmp (name, NAME)) \
6016 XSETINT (sigcode, VALUE)
6018 if (INTEGERP (sigcode
))
6024 CHECK_SYMBOL (sigcode
);
6025 name
= SSDATA (SYMBOL_NAME (sigcode
));
6027 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6033 parse_signal ("usr1", SIGUSR1
);
6036 parse_signal ("usr2", SIGUSR2
);
6039 parse_signal ("term", SIGTERM
);
6042 parse_signal ("hup", SIGHUP
);
6045 parse_signal ("int", SIGINT
);
6048 parse_signal ("quit", SIGQUIT
);
6051 parse_signal ("ill", SIGILL
);
6054 parse_signal ("abrt", SIGABRT
);
6057 parse_signal ("emt", SIGEMT
);
6060 parse_signal ("kill", SIGKILL
);
6063 parse_signal ("fpe", SIGFPE
);
6066 parse_signal ("bus", SIGBUS
);
6069 parse_signal ("segv", SIGSEGV
);
6072 parse_signal ("sys", SIGSYS
);
6075 parse_signal ("pipe", SIGPIPE
);
6078 parse_signal ("alrm", SIGALRM
);
6081 parse_signal ("urg", SIGURG
);
6084 parse_signal ("stop", SIGSTOP
);
6087 parse_signal ("tstp", SIGTSTP
);
6090 parse_signal ("cont", SIGCONT
);
6093 parse_signal ("chld", SIGCHLD
);
6096 parse_signal ("ttin", SIGTTIN
);
6099 parse_signal ("ttou", SIGTTOU
);
6102 parse_signal ("io", SIGIO
);
6105 parse_signal ("xcpu", SIGXCPU
);
6108 parse_signal ("xfsz", SIGXFSZ
);
6111 parse_signal ("vtalrm", SIGVTALRM
);
6114 parse_signal ("prof", SIGPROF
);
6117 parse_signal ("winch", SIGWINCH
);
6120 parse_signal ("info", SIGINFO
);
6123 error ("Undefined signal name %s", name
);
6128 return make_number (kill (pid
, XINT (sigcode
)));
6131 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6132 doc
: /* Make PROCESS see end-of-file in its input.
6133 EOF comes after any text already sent to it.
6134 PROCESS may be a process, a buffer, the name of a process or buffer, or
6135 nil, indicating the current buffer's process.
6136 If PROCESS is a network connection, or is a process communicating
6137 through a pipe (as opposed to a pty), then you cannot send any more
6138 text to PROCESS after you call this function.
6139 If PROCESS is a serial process, wait until all output written to the
6140 process has been transmitted to the serial port. */)
6141 (Lisp_Object process
)
6144 struct coding_system
*coding
;
6146 if (DATAGRAM_CONN_P (process
))
6149 proc
= get_process (process
);
6150 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6152 /* Make sure the process is really alive. */
6153 if (XPROCESS (proc
)->raw_status_new
)
6154 update_status (XPROCESS (proc
));
6155 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6156 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6158 if (CODING_REQUIRE_FLUSHING (coding
))
6160 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6161 send_process (proc
, "", 0, Qnil
);
6164 if (XPROCESS (proc
)->pty_flag
)
6165 send_process (proc
, "\004", 1, Qnil
);
6166 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6169 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6170 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6171 #endif /* not WINDOWSNT */
6172 /* Do nothing on Windows because writes are blocking. */
6176 int old_outfd
, new_outfd
;
6178 #ifdef HAVE_SHUTDOWN
6179 /* If this is a network connection, or socketpair is used
6180 for communication with the subprocess, call shutdown to cause EOF.
6181 (In some old system, shutdown to socketpair doesn't work.
6182 Then we just can't win.) */
6183 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6184 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6185 shutdown (XPROCESS (proc
)->outfd
, 1);
6186 /* In case of socketpair, outfd == infd, so don't close it. */
6187 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6188 emacs_close (XPROCESS (proc
)->outfd
);
6189 #else /* not HAVE_SHUTDOWN */
6190 emacs_close (XPROCESS (proc
)->outfd
);
6191 #endif /* not HAVE_SHUTDOWN */
6192 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6195 old_outfd
= XPROCESS (proc
)->outfd
;
6197 if (!proc_encode_coding_system
[new_outfd
])
6198 proc_encode_coding_system
[new_outfd
]
6199 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6200 memcpy (proc_encode_coding_system
[new_outfd
],
6201 proc_encode_coding_system
[old_outfd
],
6202 sizeof (struct coding_system
));
6203 memset (proc_encode_coding_system
[old_outfd
], 0,
6204 sizeof (struct coding_system
));
6206 XPROCESS (proc
)->outfd
= new_outfd
;
6211 /* On receipt of a signal that a child status has changed, loop asking
6212 about children with changed statuses until the system says there
6215 All we do is change the status; we do not run sentinels or print
6216 notifications. That is saved for the next time keyboard input is
6217 done, in order to avoid timing errors.
6219 ** WARNING: this can be called during garbage collection.
6220 Therefore, it must not be fooled by the presence of mark bits in
6223 ** USG WARNING: Although it is not obvious from the documentation
6224 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6225 signal() before executing at least one wait(), otherwise the
6226 handler will be called again, resulting in an infinite loop. The
6227 relevant portion of the documentation reads "SIGCLD signals will be
6228 queued and the signal-catching function will be continually
6229 reentered until the queue is empty". Invoking signal() causes the
6230 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6233 ** Malloc WARNING: This should never call malloc either directly or
6234 indirectly; if it does, that is a bug */
6238 sigchld_handler (int signo
)
6240 int old_errno
= errno
;
6242 struct Lisp_Process
*p
;
6244 SIGNAL_THREAD_CHECK (signo
);
6255 #endif /* no WUNTRACED */
6256 /* Keep trying to get a status until we get a definitive result. */
6260 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6262 while (pid
< 0 && errno
== EINTR
);
6266 /* PID == 0 means no processes found, PID == -1 means a real
6267 failure. We have done all our job, so return. */
6274 #endif /* no WNOHANG */
6276 /* Find the process that signaled us, and record its status. */
6278 /* The process can have been deleted by Fdelete_process. */
6279 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6281 Lisp_Object xpid
= XCAR (tail
);
6282 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6283 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6285 XSETCAR (tail
, Qnil
);
6286 goto sigchld_end_of_loop
;
6290 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6292 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6294 proc
= XCDR (XCAR (tail
));
6295 p
= XPROCESS (proc
);
6296 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6301 /* Look for an asynchronous process whose pid hasn't been filled
6304 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6306 proc
= XCDR (XCAR (tail
));
6307 p
= XPROCESS (proc
);
6313 /* Change the status of the process that was found. */
6316 int clear_desc_flag
= 0;
6318 p
->tick
= ++process_tick
;
6320 p
->raw_status_new
= 1;
6322 /* If process has terminated, stop waiting for its output. */
6323 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6325 clear_desc_flag
= 1;
6327 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6328 if (clear_desc_flag
)
6330 FD_CLR (p
->infd
, &input_wait_mask
);
6331 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6334 /* Tell wait_reading_process_output that it needs to wake up and
6336 if (input_available_clear_time
)
6337 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6340 /* There was no asynchronous process found for that pid: we have
6341 a synchronous process. */
6344 synch_process_alive
= 0;
6346 /* Report the status of the synchronous process. */
6348 synch_process_retcode
= WRETCODE (w
);
6349 else if (WIFSIGNALED (w
))
6350 synch_process_termsig
= WTERMSIG (w
);
6352 /* Tell wait_reading_process_output that it needs to wake up and
6354 if (input_available_clear_time
)
6355 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6358 sigchld_end_of_loop
:
6361 /* On some systems, we must return right away.
6362 If any more processes want to signal us, we will
6364 Otherwise (on systems that have WNOHANG), loop around
6365 to use up all the processes that have something to tell us. */
6366 #if (defined WINDOWSNT \
6367 || (defined USG && !defined GNU_LINUX \
6368 && !(defined HPUX && defined WNOHANG)))
6371 #endif /* USG, but not HPUX with WNOHANG */
6374 #endif /* SIGCHLD */
6378 exec_sentinel_unwind (Lisp_Object data
)
6380 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6385 exec_sentinel_error_handler (Lisp_Object error_val
)
6387 cmd_error_internal (error_val
, "error in process sentinel: ");
6389 update_echo_area ();
6390 Fsleep_for (make_number (2), Qnil
);
6395 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6397 Lisp_Object sentinel
, odeactivate
;
6398 register struct Lisp_Process
*p
= XPROCESS (proc
);
6399 int count
= SPECPDL_INDEX ();
6400 int outer_running_asynch_code
= running_asynch_code
;
6401 int waiting
= waiting_for_user_input_p
;
6403 if (inhibit_sentinels
)
6406 /* No need to gcpro these, because all we do with them later
6407 is test them for EQness, and none of them should be a string. */
6408 odeactivate
= Vdeactivate_mark
;
6410 Lisp_Object obuffer
, okeymap
;
6411 XSETBUFFER (obuffer
, current_buffer
);
6412 okeymap
= BVAR (current_buffer
, keymap
);
6415 /* There's no good reason to let sentinels change the current
6416 buffer, and many callers of accept-process-output, sit-for, and
6417 friends don't expect current-buffer to be changed from under them. */
6418 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6420 sentinel
= p
->sentinel
;
6421 if (NILP (sentinel
))
6424 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6425 assure that it gets restored no matter how the sentinel exits. */
6427 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6428 /* Inhibit quit so that random quits don't screw up a running filter. */
6429 specbind (Qinhibit_quit
, Qt
);
6430 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6432 /* In case we get recursively called,
6433 and we already saved the match data nonrecursively,
6434 save the same match data in safely recursive fashion. */
6435 if (outer_running_asynch_code
)
6438 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6439 restore_search_regs ();
6440 record_unwind_save_match_data ();
6441 Fset_match_data (tem
, Qt
);
6444 /* For speed, if a search happens within this code,
6445 save the match data in a special nonrecursive fashion. */
6446 running_asynch_code
= 1;
6448 internal_condition_case_1 (read_process_output_call
,
6450 Fcons (proc
, Fcons (reason
, Qnil
))),
6451 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6452 exec_sentinel_error_handler
);
6454 /* If we saved the match data nonrecursively, restore it now. */
6455 restore_search_regs ();
6456 running_asynch_code
= outer_running_asynch_code
;
6458 Vdeactivate_mark
= odeactivate
;
6460 /* Restore waiting_for_user_input_p as it was
6461 when we were called, in case the filter clobbered it. */
6462 waiting_for_user_input_p
= waiting
;
6465 if (! EQ (Fcurrent_buffer (), obuffer
)
6466 || ! EQ (current_buffer
->keymap
, okeymap
))
6468 /* But do it only if the caller is actually going to read events.
6469 Otherwise there's no need to make him wake up, and it could
6470 cause trouble (for example it would make sit_for return). */
6471 if (waiting_for_user_input_p
== -1)
6472 record_asynch_buffer_change ();
6474 unbind_to (count
, Qnil
);
6477 /* Report all recent events of a change in process status
6478 (either run the sentinel or output a message).
6479 This is usually done while Emacs is waiting for keyboard input
6480 but can be done at other times. */
6483 status_notify (struct Lisp_Process
*deleting_process
)
6485 register Lisp_Object proc
, buffer
;
6486 Lisp_Object tail
, msg
;
6487 struct gcpro gcpro1
, gcpro2
;
6491 /* We need to gcpro tail; if read_process_output calls a filter
6492 which deletes a process and removes the cons to which tail points
6493 from Vprocess_alist, and then causes a GC, tail is an unprotected
6497 /* Set this now, so that if new processes are created by sentinels
6498 that we run, we get called again to handle their status changes. */
6499 update_tick
= process_tick
;
6501 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6504 register struct Lisp_Process
*p
;
6506 proc
= Fcdr (XCAR (tail
));
6507 p
= XPROCESS (proc
);
6509 if (p
->tick
!= p
->update_tick
)
6511 p
->update_tick
= p
->tick
;
6513 /* If process is still active, read any output that remains. */
6514 while (! EQ (p
->filter
, Qt
)
6515 && ! EQ (p
->status
, Qconnect
)
6516 && ! EQ (p
->status
, Qlisten
)
6517 /* Network or serial process not stopped: */
6518 && ! EQ (p
->command
, Qt
)
6520 && p
!= deleting_process
6521 && read_process_output (proc
, p
->infd
) > 0);
6525 /* Get the text to use for the message. */
6526 if (p
->raw_status_new
)
6528 msg
= status_message (p
);
6530 /* If process is terminated, deactivate it or delete it. */
6532 if (CONSP (p
->status
))
6533 symbol
= XCAR (p
->status
);
6535 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6536 || EQ (symbol
, Qclosed
))
6538 if (delete_exited_processes
)
6539 remove_process (proc
);
6541 deactivate_process (proc
);
6544 /* The actions above may have further incremented p->tick.
6545 So set p->update_tick again
6546 so that an error in the sentinel will not cause
6547 this code to be run again. */
6548 p
->update_tick
= p
->tick
;
6549 /* Now output the message suitably. */
6550 if (!NILP (p
->sentinel
))
6551 exec_sentinel (proc
, msg
);
6552 /* Don't bother with a message in the buffer
6553 when a process becomes runnable. */
6554 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6557 struct buffer
*old
= current_buffer
;
6558 EMACS_INT opoint
, opoint_byte
;
6559 EMACS_INT before
, before_byte
;
6561 /* Avoid error if buffer is deleted
6562 (probably that's why the process is dead, too) */
6563 if (NILP (BVAR (XBUFFER (buffer
), name
)))
6565 Fset_buffer (buffer
);
6568 opoint_byte
= PT_BYTE
;
6569 /* Insert new output into buffer
6570 at the current end-of-output marker,
6571 thus preserving logical ordering of input and output. */
6572 if (XMARKER (p
->mark
)->buffer
)
6573 Fgoto_char (p
->mark
);
6575 SET_PT_BOTH (ZV
, ZV_BYTE
);
6578 before_byte
= PT_BYTE
;
6580 tem
= BVAR (current_buffer
, read_only
);
6581 BVAR (current_buffer
, read_only
) = Qnil
;
6582 insert_string ("\nProcess ");
6583 Finsert (1, &p
->name
);
6584 insert_string (" ");
6586 BVAR (current_buffer
, read_only
) = tem
;
6587 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6589 if (opoint
>= before
)
6590 SET_PT_BOTH (opoint
+ (PT
- before
),
6591 opoint_byte
+ (PT_BYTE
- before_byte
));
6593 SET_PT_BOTH (opoint
, opoint_byte
);
6595 set_buffer_internal (old
);
6600 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6605 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6606 Sset_process_coding_system
, 1, 3, 0,
6607 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6608 DECODING will be used to decode subprocess output and ENCODING to
6609 encode subprocess input. */)
6610 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6612 register struct Lisp_Process
*p
;
6614 CHECK_PROCESS (process
);
6615 p
= XPROCESS (process
);
6617 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6619 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6620 Fcheck_coding_system (decoding
);
6621 Fcheck_coding_system (encoding
);
6622 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6623 p
->decode_coding_system
= decoding
;
6624 p
->encode_coding_system
= encoding
;
6625 setup_process_coding_systems (process
);
6630 DEFUN ("process-coding-system",
6631 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6632 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6633 (register Lisp_Object process
)
6635 CHECK_PROCESS (process
);
6636 return Fcons (XPROCESS (process
)->decode_coding_system
,
6637 XPROCESS (process
)->encode_coding_system
);
6640 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6641 Sset_process_filter_multibyte
, 2, 2, 0,
6642 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6643 If FLAG is non-nil, the filter is given multibyte strings.
6644 If FLAG is nil, the filter is given unibyte strings. In this case,
6645 all character code conversion except for end-of-line conversion is
6647 (Lisp_Object process
, Lisp_Object flag
)
6649 register struct Lisp_Process
*p
;
6651 CHECK_PROCESS (process
);
6652 p
= XPROCESS (process
);
6654 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6655 setup_process_coding_systems (process
);
6660 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6661 Sprocess_filter_multibyte_p
, 1, 1, 0,
6662 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6663 (Lisp_Object process
)
6665 register struct Lisp_Process
*p
;
6666 struct coding_system
*coding
;
6668 CHECK_PROCESS (process
);
6669 p
= XPROCESS (process
);
6670 coding
= proc_decode_coding_system
[p
->infd
];
6671 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6680 add_gpm_wait_descriptor (int desc
)
6682 add_keyboard_wait_descriptor (desc
);
6686 delete_gpm_wait_descriptor (int desc
)
6688 delete_keyboard_wait_descriptor (desc
);
6695 /* Return nonzero if *MASK has a bit set
6696 that corresponds to one of the keyboard input descriptors. */
6699 keyboard_bit_set (fd_set
*mask
)
6703 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6704 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6705 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6712 #else /* not subprocesses */
6714 /* Defined on msdos.c. */
6715 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6718 /* Implementation of wait_reading_process_output, assuming that there
6719 are no subprocesses. Used only by the MS-DOS build.
6721 Wait for timeout to elapse and/or keyboard input to be available.
6724 timeout in seconds, or
6725 zero for no limit, or
6726 -1 means gobble data immediately available but don't wait for any.
6728 read_kbd is a Lisp_Object:
6729 0 to ignore keyboard input, or
6730 1 to return when input is available, or
6731 -1 means caller will actually read the input, so don't throw to
6734 see full version for other parameters. We know that wait_proc will
6735 always be NULL, since `subprocesses' isn't defined.
6737 do_display != 0 means redisplay should be done to show subprocess
6738 output that arrives.
6740 Return true if we received input from any process. */
6743 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6745 Lisp_Object wait_for_cell
,
6746 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6749 EMACS_TIME end_time
, timeout
;
6750 SELECT_TYPE waitchannels
;
6753 /* What does time_limit really mean? */
6754 if (time_limit
|| microsecs
)
6756 EMACS_GET_TIME (end_time
);
6757 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6758 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6761 /* Turn off periodic alarms (in case they are in use)
6762 and then turn off any other atimers,
6763 because the select emulator uses alarms. */
6765 turn_on_atimers (0);
6769 int timeout_reduced_for_timers
= 0;
6771 /* If calling from keyboard input, do not quit
6772 since we want to return C-g as an input character.
6773 Otherwise, do pending quit if requested. */
6777 /* Exit now if the cell we're waiting for became non-nil. */
6778 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6781 /* Compute time from now till when time limit is up */
6782 /* Exit if already run out */
6783 if (time_limit
== -1)
6785 /* -1 specified for timeout means
6786 gobble output available now
6787 but don't wait at all. */
6789 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6791 else if (time_limit
|| microsecs
)
6793 EMACS_GET_TIME (timeout
);
6794 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6795 if (EMACS_TIME_NEG_P (timeout
))
6800 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6803 /* If our caller will not immediately handle keyboard events,
6804 run timer events directly.
6805 (Callers that will immediately read keyboard events
6806 call timer_delay on their own.) */
6807 if (NILP (wait_for_cell
))
6809 EMACS_TIME timer_delay
;
6813 int old_timers_run
= timers_run
;
6814 timer_delay
= timer_check ();
6815 if (timers_run
!= old_timers_run
&& do_display
)
6816 /* We must retry, since a timer may have requeued itself
6817 and that could alter the time delay. */
6818 redisplay_preserve_echo_area (14);
6822 while (!detect_input_pending ());
6824 /* If there is unread keyboard input, also return. */
6826 && requeued_events_pending_p ())
6829 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6831 EMACS_TIME difference
;
6832 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6833 if (EMACS_TIME_NEG_P (difference
))
6835 timeout
= timer_delay
;
6836 timeout_reduced_for_timers
= 1;
6841 /* Cause C-g and alarm signals to take immediate action,
6842 and cause input available signals to zero out timeout. */
6844 set_waiting_for_input (&timeout
);
6846 /* Wait till there is something to do. */
6848 if (! read_kbd
&& NILP (wait_for_cell
))
6849 FD_ZERO (&waitchannels
);
6851 FD_SET (0, &waitchannels
);
6853 /* If a frame has been newly mapped and needs updating,
6854 reprocess its display stuff. */
6855 if (frame_garbaged
&& do_display
)
6857 clear_waiting_for_input ();
6858 redisplay_preserve_echo_area (15);
6860 set_waiting_for_input (&timeout
);
6863 if (read_kbd
&& detect_input_pending ())
6866 FD_ZERO (&waitchannels
);
6869 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6874 /* Make C-g and alarm signals set flags again */
6875 clear_waiting_for_input ();
6877 /* If we woke up due to SIGWINCH, actually change size now. */
6878 do_pending_window_change (0);
6880 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6881 /* We waited the full specified time, so return now. */
6886 /* If the system call was interrupted, then go around the
6888 if (xerrno
== EINTR
)
6889 FD_ZERO (&waitchannels
);
6891 error ("select error: %s", emacs_strerror (xerrno
));
6894 /* Check for keyboard input */
6897 && detect_input_pending_run_timers (do_display
))
6899 swallow_events (do_display
);
6900 if (detect_input_pending_run_timers (do_display
))
6904 /* If there is unread keyboard input, also return. */
6906 && requeued_events_pending_p ())
6909 /* If wait_for_cell. check for keyboard input
6910 but don't run any timers.
6911 ??? (It seems wrong to me to check for keyboard
6912 input at all when wait_for_cell, but the code
6913 has been this way since July 1994.
6914 Try changing this after version 19.31.) */
6915 if (! NILP (wait_for_cell
)
6916 && detect_input_pending ())
6918 swallow_events (do_display
);
6919 if (detect_input_pending ())
6923 /* Exit now if the cell we're waiting for became non-nil. */
6924 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6933 #endif /* not subprocesses */
6935 /* The following functions are needed even if async subprocesses are
6936 not supported. Some of them are no-op stubs in that case. */
6938 /* Add DESC to the set of keyboard input descriptors. */
6941 add_keyboard_wait_descriptor (int desc
)
6943 #ifdef subprocesses /* actually means "not MSDOS" */
6944 FD_SET (desc
, &input_wait_mask
);
6945 FD_SET (desc
, &non_process_wait_mask
);
6946 if (desc
> max_input_desc
)
6947 max_input_desc
= desc
;
6951 /* From now on, do not expect DESC to give keyboard input. */
6954 delete_keyboard_wait_descriptor (int desc
)
6958 int lim
= max_input_desc
;
6960 FD_CLR (desc
, &input_wait_mask
);
6961 FD_CLR (desc
, &non_process_wait_mask
);
6963 if (desc
== max_input_desc
)
6964 for (fd
= 0; fd
< lim
; fd
++)
6965 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
6966 max_input_desc
= fd
;
6970 /* Setup coding systems of PROCESS. */
6973 setup_process_coding_systems (Lisp_Object process
)
6976 struct Lisp_Process
*p
= XPROCESS (process
);
6978 int outch
= p
->outfd
;
6979 Lisp_Object coding_system
;
6981 if (inch
< 0 || outch
< 0)
6984 if (!proc_decode_coding_system
[inch
])
6985 proc_decode_coding_system
[inch
]
6986 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6987 coding_system
= p
->decode_coding_system
;
6988 if (! NILP (p
->filter
))
6990 else if (BUFFERP (p
->buffer
))
6992 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6993 coding_system
= raw_text_coding_system (coding_system
);
6995 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6997 if (!proc_encode_coding_system
[outch
])
6998 proc_encode_coding_system
[outch
]
6999 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
7000 setup_coding_system (p
->encode_coding_system
,
7001 proc_encode_coding_system
[outch
]);
7005 /* Close all descriptors currently in use for communication
7006 with subprocess. This is used in a newly-forked subprocess
7007 to get rid of irrelevant descriptors. */
7010 close_process_descs (void)
7014 for (i
= 0; i
< MAXDESC
; i
++)
7016 Lisp_Object process
;
7017 process
= chan_process
[i
];
7018 if (!NILP (process
))
7020 int in
= XPROCESS (process
)->infd
;
7021 int out
= XPROCESS (process
)->outfd
;
7024 if (out
>= 0 && in
!= out
)
7031 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7032 doc
: /* Return the (or a) process associated with BUFFER.
7033 BUFFER may be a buffer or the name of one. */)
7034 (register Lisp_Object buffer
)
7037 register Lisp_Object buf
, tail
, proc
;
7039 if (NILP (buffer
)) return Qnil
;
7040 buf
= Fget_buffer (buffer
);
7041 if (NILP (buf
)) return Qnil
;
7043 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7045 proc
= Fcdr (XCAR (tail
));
7046 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
7049 #endif /* subprocesses */
7053 DEFUN ("process-inherit-coding-system-flag",
7054 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7056 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7057 If this flag is t, `buffer-file-coding-system' of the buffer
7058 associated with PROCESS will inherit the coding system used to decode
7059 the process output. */)
7060 (register Lisp_Object process
)
7063 CHECK_PROCESS (process
);
7064 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7066 /* Ignore the argument and return the value of
7067 inherit-process-coding-system. */
7068 return inherit_process_coding_system
? Qt
: Qnil
;
7072 /* Kill all processes associated with `buffer'.
7073 If `buffer' is nil, kill all processes */
7076 kill_buffer_processes (Lisp_Object buffer
)
7079 Lisp_Object tail
, proc
;
7081 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7083 proc
= XCDR (XCAR (tail
));
7085 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7087 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7088 Fdelete_process (proc
);
7089 else if (XPROCESS (proc
)->infd
>= 0)
7090 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7093 #else /* subprocesses */
7094 /* Since we have no subprocesses, this does nothing. */
7095 #endif /* subprocesses */
7098 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7099 Swaiting_for_user_input_p
, 0, 0, 0,
7100 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7101 This is intended for use by asynchronous process output filters and sentinels. */)
7105 return (waiting_for_user_input_p
? Qt
: Qnil
);
7111 /* Stop reading input from keyboard sources. */
7114 hold_keyboard_input (void)
7119 /* Resume reading input from keyboard sources. */
7122 unhold_keyboard_input (void)
7127 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7130 kbd_on_hold_p (void)
7132 return kbd_is_on_hold
;
7136 /* Enumeration of and access to system processes a-la ps(1). */
7138 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7140 doc
: /* Return a list of numerical process IDs of all running processes.
7141 If this functionality is unsupported, return nil.
7143 See `process-attributes' for getting attributes of a process given its ID. */)
7146 return list_system_processes ();
7149 DEFUN ("process-attributes", Fprocess_attributes
,
7150 Sprocess_attributes
, 1, 1, 0,
7151 doc
: /* Return attributes of the process given by its PID, a number.
7153 Value is an alist where each element is a cons cell of the form
7157 If this functionality is unsupported, the value is nil.
7159 See `list-system-processes' for getting a list of all process IDs.
7161 The KEYs of the attributes that this function may return are listed
7162 below, together with the type of the associated VALUE (in parentheses).
7163 Not all platforms support all of these attributes; unsupported
7164 attributes will not appear in the returned alist.
7165 Unless explicitly indicated otherwise, numbers can have either
7166 integer or floating point values.
7168 euid -- Effective user User ID of the process (number)
7169 user -- User name corresponding to euid (string)
7170 egid -- Effective user Group ID of the process (number)
7171 group -- Group name corresponding to egid (string)
7172 comm -- Command name (executable name only) (string)
7173 state -- Process state code, such as "S", "R", or "T" (string)
7174 ppid -- Parent process ID (number)
7175 pgrp -- Process group ID (number)
7176 sess -- Session ID, i.e. process ID of session leader (number)
7177 ttname -- Controlling tty name (string)
7178 tpgid -- ID of foreground process group on the process's tty (number)
7179 minflt -- number of minor page faults (number)
7180 majflt -- number of major page faults (number)
7181 cminflt -- cumulative number of minor page faults (number)
7182 cmajflt -- cumulative number of major page faults (number)
7183 utime -- user time used by the process, in the (HIGH LOW USEC) format
7184 stime -- system time used by the process, in the (HIGH LOW USEC) format
7185 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7186 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7187 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7188 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7189 pri -- priority of the process (number)
7190 nice -- nice value of the process (number)
7191 thcount -- process thread count (number)
7192 start -- time the process started, in the (HIGH LOW USEC) format
7193 vsize -- virtual memory size of the process in KB's (number)
7194 rss -- resident set size of the process in KB's (number)
7195 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7196 pcpu -- percents of CPU time used by the process (floating-point number)
7197 pmem -- percents of total physical memory used by process's resident set
7198 (floating-point number)
7199 args -- command line which invoked the process (string). */)
7202 return system_process_attributes (pid
);
7212 inhibit_sentinels
= 0;
7216 if (! noninteractive
|| initialized
)
7218 signal (SIGCHLD
, sigchld_handler
);
7221 FD_ZERO (&input_wait_mask
);
7222 FD_ZERO (&non_keyboard_wait_mask
);
7223 FD_ZERO (&non_process_wait_mask
);
7224 FD_ZERO (&write_mask
);
7225 max_process_desc
= 0;
7226 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7228 #ifdef NON_BLOCKING_CONNECT
7229 FD_ZERO (&connect_wait_mask
);
7230 num_pending_connects
= 0;
7233 #ifdef ADAPTIVE_READ_BUFFERING
7234 process_output_delay_count
= 0;
7235 process_output_skip
= 0;
7238 /* Don't do this, it caused infinite select loops. The display
7239 method should call add_keyboard_wait_descriptor on stdin if it
7242 FD_SET (0, &input_wait_mask
);
7245 Vprocess_alist
= Qnil
;
7247 deleted_pid_list
= Qnil
;
7249 for (i
= 0; i
< MAXDESC
; i
++)
7251 chan_process
[i
] = Qnil
;
7252 proc_buffered_char
[i
] = -1;
7254 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7255 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7256 #ifdef DATAGRAM_SOCKETS
7257 memset (datagram_address
, 0, sizeof datagram_address
);
7261 Lisp_Object subfeatures
= Qnil
;
7262 const struct socket_options
*sopt
;
7264 #define ADD_SUBFEATURE(key, val) \
7265 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7267 #ifdef NON_BLOCKING_CONNECT
7268 ADD_SUBFEATURE (QCnowait
, Qt
);
7270 #ifdef DATAGRAM_SOCKETS
7271 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7273 #ifdef HAVE_SEQPACKET
7274 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7276 #ifdef HAVE_LOCAL_SOCKETS
7277 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7279 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7281 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7283 #ifdef HAVE_GETSOCKNAME
7284 ADD_SUBFEATURE (QCservice
, Qt
);
7286 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7287 ADD_SUBFEATURE (QCserver
, Qt
);
7290 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7291 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7293 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7296 #if defined (DARWIN_OS)
7297 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7298 processes. As such, we only change the default value. */
7301 char const *release
= (STRINGP (Voperating_system_release
)
7302 ? SSDATA (Voperating_system_release
)
7304 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7305 && release
[1] == '.')) {
7306 Vprocess_connection_type
= Qnil
;
7310 #endif /* subprocesses */
7315 syms_of_process (void)
7319 DEFSYM (Qprocessp
, "processp");
7320 DEFSYM (Qrun
, "run");
7321 DEFSYM (Qstop
, "stop");
7322 DEFSYM (Qsignal
, "signal");
7324 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7327 Qexit = intern_c_string ("exit");
7328 staticpro (&Qexit); */
7330 DEFSYM (Qopen
, "open");
7331 DEFSYM (Qclosed
, "closed");
7332 DEFSYM (Qconnect
, "connect");
7333 DEFSYM (Qfailed
, "failed");
7334 DEFSYM (Qlisten
, "listen");
7335 DEFSYM (Qlocal
, "local");
7336 DEFSYM (Qipv4
, "ipv4");
7338 DEFSYM (Qipv6
, "ipv6");
7340 DEFSYM (Qdatagram
, "datagram");
7341 DEFSYM (Qseqpacket
, "seqpacket");
7343 DEFSYM (QCport
, ":port");
7344 DEFSYM (QCspeed
, ":speed");
7345 DEFSYM (QCprocess
, ":process");
7347 DEFSYM (QCbytesize
, ":bytesize");
7348 DEFSYM (QCstopbits
, ":stopbits");
7349 DEFSYM (QCparity
, ":parity");
7350 DEFSYM (Qodd
, "odd");
7351 DEFSYM (Qeven
, "even");
7352 DEFSYM (QCflowcontrol
, ":flowcontrol");
7355 DEFSYM (QCsummary
, ":summary");
7357 DEFSYM (Qreal
, "real");
7358 DEFSYM (Qnetwork
, "network");
7359 DEFSYM (Qserial
, "serial");
7360 DEFSYM (QCbuffer
, ":buffer");
7361 DEFSYM (QChost
, ":host");
7362 DEFSYM (QCservice
, ":service");
7363 DEFSYM (QClocal
, ":local");
7364 DEFSYM (QCremote
, ":remote");
7365 DEFSYM (QCcoding
, ":coding");
7366 DEFSYM (QCserver
, ":server");
7367 DEFSYM (QCnowait
, ":nowait");
7368 DEFSYM (QCsentinel
, ":sentinel");
7369 DEFSYM (QClog
, ":log");
7370 DEFSYM (QCnoquery
, ":noquery");
7371 DEFSYM (QCstop
, ":stop");
7372 DEFSYM (QCoptions
, ":options");
7373 DEFSYM (QCplist
, ":plist");
7375 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7377 staticpro (&Vprocess_alist
);
7379 staticpro (&deleted_pid_list
);
7382 #endif /* subprocesses */
7384 DEFSYM (QCname
, ":name");
7385 DEFSYM (QCtype
, ":type");
7387 DEFSYM (Qeuid
, "euid");
7388 DEFSYM (Qegid
, "egid");
7389 DEFSYM (Quser
, "user");
7390 DEFSYM (Qgroup
, "group");
7391 DEFSYM (Qcomm
, "comm");
7392 DEFSYM (Qstate
, "state");
7393 DEFSYM (Qppid
, "ppid");
7394 DEFSYM (Qpgrp
, "pgrp");
7395 DEFSYM (Qsess
, "sess");
7396 DEFSYM (Qttname
, "ttname");
7397 DEFSYM (Qtpgid
, "tpgid");
7398 DEFSYM (Qminflt
, "minflt");
7399 DEFSYM (Qmajflt
, "majflt");
7400 DEFSYM (Qcminflt
, "cminflt");
7401 DEFSYM (Qcmajflt
, "cmajflt");
7402 DEFSYM (Qutime
, "utime");
7403 DEFSYM (Qstime
, "stime");
7404 DEFSYM (Qtime
, "time");
7405 DEFSYM (Qcutime
, "cutime");
7406 DEFSYM (Qcstime
, "cstime");
7407 DEFSYM (Qctime
, "ctime");
7408 DEFSYM (Qpri
, "pri");
7409 DEFSYM (Qnice
, "nice");
7410 DEFSYM (Qthcount
, "thcount");
7411 DEFSYM (Qstart
, "start");
7412 DEFSYM (Qvsize
, "vsize");
7413 DEFSYM (Qrss
, "rss");
7414 DEFSYM (Qetime
, "etime");
7415 DEFSYM (Qpcpu
, "pcpu");
7416 DEFSYM (Qpmem
, "pmem");
7417 DEFSYM (Qargs
, "args");
7419 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7420 doc
: /* *Non-nil means delete processes immediately when they exit.
7421 A value of nil means don't delete them until `list-processes' is run. */);
7423 delete_exited_processes
= 1;
7426 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7427 doc
: /* Control type of device used to communicate with subprocesses.
7428 Values are nil to use a pipe, or t or `pty' to use a pty.
7429 The value has no effect if the system has no ptys or if all ptys are busy:
7430 then a pipe is used in any case.
7431 The value takes effect when `start-process' is called. */);
7432 Vprocess_connection_type
= Qt
;
7434 #ifdef ADAPTIVE_READ_BUFFERING
7435 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7436 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7437 On some systems, when Emacs reads the output from a subprocess, the output data
7438 is read in very small blocks, potentially resulting in very poor performance.
7439 This behavior can be remedied to some extent by setting this variable to a
7440 non-nil value, as it will automatically delay reading from such processes, to
7441 allow them to produce more output before Emacs tries to read it.
7442 If the value is t, the delay is reset after each write to the process; any other
7443 non-nil value means that the delay is not reset on write.
7444 The variable takes effect when `start-process' is called. */);
7445 Vprocess_adaptive_read_buffering
= Qt
;
7448 defsubr (&Sprocessp
);
7449 defsubr (&Sget_process
);
7450 defsubr (&Sdelete_process
);
7451 defsubr (&Sprocess_status
);
7452 defsubr (&Sprocess_exit_status
);
7453 defsubr (&Sprocess_id
);
7454 defsubr (&Sprocess_name
);
7455 defsubr (&Sprocess_tty_name
);
7456 defsubr (&Sprocess_command
);
7457 defsubr (&Sset_process_buffer
);
7458 defsubr (&Sprocess_buffer
);
7459 defsubr (&Sprocess_mark
);
7460 defsubr (&Sset_process_filter
);
7461 defsubr (&Sprocess_filter
);
7462 defsubr (&Sset_process_sentinel
);
7463 defsubr (&Sprocess_sentinel
);
7464 defsubr (&Sset_process_window_size
);
7465 defsubr (&Sset_process_inherit_coding_system_flag
);
7466 defsubr (&Sset_process_query_on_exit_flag
);
7467 defsubr (&Sprocess_query_on_exit_flag
);
7468 defsubr (&Sprocess_contact
);
7469 defsubr (&Sprocess_plist
);
7470 defsubr (&Sset_process_plist
);
7471 defsubr (&Sprocess_list
);
7472 defsubr (&Sstart_process
);
7473 defsubr (&Sserial_process_configure
);
7474 defsubr (&Smake_serial_process
);
7475 defsubr (&Sset_network_process_option
);
7476 defsubr (&Smake_network_process
);
7477 defsubr (&Sformat_network_address
);
7478 #if defined(HAVE_NET_IF_H)
7480 defsubr (&Snetwork_interface_list
);
7482 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7483 defsubr (&Snetwork_interface_info
);
7485 #endif /* defined(HAVE_NET_IF_H) */
7486 #ifdef DATAGRAM_SOCKETS
7487 defsubr (&Sprocess_datagram_address
);
7488 defsubr (&Sset_process_datagram_address
);
7490 defsubr (&Saccept_process_output
);
7491 defsubr (&Sprocess_send_region
);
7492 defsubr (&Sprocess_send_string
);
7493 defsubr (&Sinterrupt_process
);
7494 defsubr (&Skill_process
);
7495 defsubr (&Squit_process
);
7496 defsubr (&Sstop_process
);
7497 defsubr (&Scontinue_process
);
7498 defsubr (&Sprocess_running_child_p
);
7499 defsubr (&Sprocess_send_eof
);
7500 defsubr (&Ssignal_process
);
7501 defsubr (&Swaiting_for_user_input_p
);
7502 defsubr (&Sprocess_type
);
7503 defsubr (&Sset_process_coding_system
);
7504 defsubr (&Sprocess_coding_system
);
7505 defsubr (&Sset_process_filter_multibyte
);
7506 defsubr (&Sprocess_filter_multibyte_p
);
7508 #endif /* subprocesses */
7510 defsubr (&Sget_buffer_process
);
7511 defsubr (&Sprocess_inherit_coding_system_flag
);
7512 defsubr (&Slist_system_processes
);
7513 defsubr (&Sprocess_attributes
);