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
;
619 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
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;
645 p
->gnutls_state
= NULL
;
646 p
->gnutls_x509_cred
= NULL
;
647 p
->gnutls_anon_cred
= NULL
;
650 /* If name is already in use, modify it until it is unused. */
655 tem
= Fget_process (name1
);
656 if (NILP (tem
)) break;
657 sprintf (suffix
, "<%"pMd
">", i
);
658 name1
= concat2 (name
, build_string (suffix
));
662 XSETPROCESS (val
, p
);
663 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
668 remove_process (register Lisp_Object proc
)
670 register Lisp_Object pair
;
672 pair
= Frassq (proc
, Vprocess_alist
);
673 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
675 deactivate_process (proc
);
679 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
680 doc
: /* Return t if OBJECT is a process. */)
683 return PROCESSP (object
) ? Qt
: Qnil
;
686 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
687 doc
: /* Return the process named NAME, or nil if there is none. */)
688 (register Lisp_Object name
)
693 return Fcdr (Fassoc (name
, Vprocess_alist
));
696 /* This is how commands for the user decode process arguments. It
697 accepts a process, a process name, a buffer, a buffer name, or nil.
698 Buffers denote the first process in the buffer, and nil denotes the
702 get_process (register Lisp_Object name
)
704 register Lisp_Object proc
, obj
;
707 obj
= Fget_process (name
);
709 obj
= Fget_buffer (name
);
711 error ("Process %s does not exist", SDATA (name
));
713 else if (NILP (name
))
714 obj
= Fcurrent_buffer ();
718 /* Now obj should be either a buffer object or a process object.
722 proc
= Fget_buffer_process (obj
);
724 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
736 /* Fdelete_process promises to immediately forget about the process, but in
737 reality, Emacs needs to remember those processes until they have been
738 treated by sigchld_handler; otherwise this handler would consider the
739 process as being synchronous and say that the synchronous process is
741 static Lisp_Object deleted_pid_list
;
744 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
745 doc
: /* Delete PROCESS: kill it and forget about it immediately.
746 PROCESS may be a process, a buffer, the name of a process or buffer, or
747 nil, indicating the current buffer's process. */)
748 (register Lisp_Object process
)
750 register struct Lisp_Process
*p
;
752 process
= get_process (process
);
753 p
= XPROCESS (process
);
755 p
->raw_status_new
= 0;
756 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
758 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
759 p
->tick
= ++process_tick
;
761 redisplay_preserve_echo_area (13);
763 else if (p
->infd
>= 0)
767 /* Assignment to EMACS_INT stops GCC whining about limited range
769 EMACS_INT pid
= p
->pid
;
771 /* No problem storing the pid here, as it is still in Vprocess_alist. */
772 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
773 /* GC treated elements set to nil. */
774 Fdelq (Qnil
, deleted_pid_list
));
775 /* If the process has already signaled, remove it from the list. */
776 if (p
->raw_status_new
)
779 if (CONSP (p
->status
))
780 symbol
= XCAR (p
->status
);
781 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
783 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
787 Fkill_process (process
, Qnil
);
788 /* Do this now, since remove_process will make sigchld_handler do nothing. */
790 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
791 p
->tick
= ++process_tick
;
793 redisplay_preserve_echo_area (13);
796 remove_process (process
);
800 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
801 doc
: /* Return the status of PROCESS.
802 The returned value is one of the following symbols:
803 run -- for a process that is running.
804 stop -- for a process stopped but continuable.
805 exit -- for a process that has exited.
806 signal -- for a process that has got a fatal signal.
807 open -- for a network stream connection that is open.
808 listen -- for a network stream server that is listening.
809 closed -- for a network stream connection that is closed.
810 connect -- when waiting for a non-blocking connection to complete.
811 failed -- when a non-blocking connection has failed.
812 nil -- if arg is a process name and no such process exists.
813 PROCESS may be a process, a buffer, the name of a process, or
814 nil, indicating the current buffer's process. */)
815 (register Lisp_Object process
)
817 register struct Lisp_Process
*p
;
818 register Lisp_Object status
;
820 if (STRINGP (process
))
821 process
= Fget_process (process
);
823 process
= get_process (process
);
828 p
= XPROCESS (process
);
829 if (p
->raw_status_new
)
833 status
= XCAR (status
);
834 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
836 if (EQ (status
, Qexit
))
838 else if (EQ (p
->command
, Qt
))
840 else if (EQ (status
, Qrun
))
846 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
848 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
849 If PROCESS has not yet exited or died, return 0. */)
850 (register Lisp_Object process
)
852 CHECK_PROCESS (process
);
853 if (XPROCESS (process
)->raw_status_new
)
854 update_status (XPROCESS (process
));
855 if (CONSP (XPROCESS (process
)->status
))
856 return XCAR (XCDR (XPROCESS (process
)->status
));
857 return make_number (0);
860 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
861 doc
: /* Return the process id of PROCESS.
862 This is the pid of the external process which PROCESS uses or talks to.
863 For a network connection, this value is nil. */)
864 (register Lisp_Object process
)
866 /* Assignment to EMACS_INT stops GCC whining about limited range of
870 CHECK_PROCESS (process
);
871 pid
= XPROCESS (process
)->pid
;
872 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
875 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
876 doc
: /* Return the name of PROCESS, as a string.
877 This is the name of the program invoked in PROCESS,
878 possibly modified to make it unique among process names. */)
879 (register Lisp_Object process
)
881 CHECK_PROCESS (process
);
882 return XPROCESS (process
)->name
;
885 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
886 doc
: /* Return the command that was executed to start PROCESS.
887 This is a list of strings, the first string being the program executed
888 and the rest of the strings being the arguments given to it.
889 For a network or serial process, this is nil (process is running) or t
890 \(process is stopped). */)
891 (register Lisp_Object process
)
893 CHECK_PROCESS (process
);
894 return XPROCESS (process
)->command
;
897 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
898 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
899 This is the terminal that the process itself reads and writes on,
900 not the name of the pty that Emacs uses to talk with that terminal. */)
901 (register Lisp_Object process
)
903 CHECK_PROCESS (process
);
904 return XPROCESS (process
)->tty_name
;
907 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
909 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
911 (register Lisp_Object process
, Lisp_Object buffer
)
913 struct Lisp_Process
*p
;
915 CHECK_PROCESS (process
);
917 CHECK_BUFFER (buffer
);
918 p
= XPROCESS (process
);
920 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
921 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
922 setup_process_coding_systems (process
);
926 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
928 doc
: /* Return the buffer PROCESS is associated with.
929 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
930 (register Lisp_Object process
)
932 CHECK_PROCESS (process
);
933 return XPROCESS (process
)->buffer
;
936 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
938 doc
: /* Return the marker for the end of the last output from PROCESS. */)
939 (register Lisp_Object process
)
941 CHECK_PROCESS (process
);
942 return XPROCESS (process
)->mark
;
945 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
947 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
948 A value of t means stop accepting output from the process.
950 When a process has a filter, its buffer is not used for output.
951 Instead, each time it does output, the entire string of output is
952 passed to the filter.
954 The filter gets two arguments: the process and the string of output.
955 The string argument is normally a multibyte string, except:
956 - if the process' input coding system is no-conversion or raw-text,
957 it is a unibyte string (the non-converted input), or else
958 - if `default-enable-multibyte-characters' is nil, it is a unibyte
959 string (the result of converting the decoded input multibyte
960 string to unibyte with `string-make-unibyte'). */)
961 (register Lisp_Object process
, Lisp_Object filter
)
963 struct Lisp_Process
*p
;
965 CHECK_PROCESS (process
);
966 p
= XPROCESS (process
);
968 /* Don't signal an error if the process' input file descriptor
969 is closed. This could make debugging Lisp more difficult,
970 for example when doing something like
972 (setq process (start-process ...))
974 (set-process-filter process ...) */
978 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
980 FD_CLR (p
->infd
, &input_wait_mask
);
981 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
983 else if (EQ (p
->filter
, Qt
)
984 /* Network or serial process not stopped: */
985 && !EQ (p
->command
, Qt
))
987 FD_SET (p
->infd
, &input_wait_mask
);
988 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
993 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
994 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
995 setup_process_coding_systems (process
);
999 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1001 doc
: /* Returns the filter function of PROCESS; nil if none.
1002 See `set-process-filter' for more info on filter functions. */)
1003 (register Lisp_Object process
)
1005 CHECK_PROCESS (process
);
1006 return XPROCESS (process
)->filter
;
1009 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1011 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1012 The sentinel is called as a function when the process changes state.
1013 It gets two arguments: the process, and a string describing the change. */)
1014 (register Lisp_Object process
, Lisp_Object sentinel
)
1016 struct Lisp_Process
*p
;
1018 CHECK_PROCESS (process
);
1019 p
= XPROCESS (process
);
1021 p
->sentinel
= sentinel
;
1022 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1023 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1027 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1029 doc
: /* Return the sentinel of PROCESS; nil if none.
1030 See `set-process-sentinel' for more info on sentinels. */)
1031 (register Lisp_Object process
)
1033 CHECK_PROCESS (process
);
1034 return XPROCESS (process
)->sentinel
;
1037 DEFUN ("set-process-window-size", Fset_process_window_size
,
1038 Sset_process_window_size
, 3, 3, 0,
1039 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1040 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1042 CHECK_PROCESS (process
);
1043 CHECK_NATNUM (height
);
1044 CHECK_NATNUM (width
);
1046 if (XPROCESS (process
)->infd
< 0
1047 || set_window_size (XPROCESS (process
)->infd
,
1048 XINT (height
), XINT (width
)) <= 0)
1054 DEFUN ("set-process-inherit-coding-system-flag",
1055 Fset_process_inherit_coding_system_flag
,
1056 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1057 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1058 If the second argument FLAG is non-nil, then the variable
1059 `buffer-file-coding-system' of the buffer associated with PROCESS
1060 will be bound to the value of the coding system used to decode
1063 This is useful when the coding system specified for the process buffer
1064 leaves either the character code conversion or the end-of-line conversion
1065 unspecified, or if the coding system used to decode the process output
1066 is more appropriate for saving the process buffer.
1068 Binding the variable `inherit-process-coding-system' to non-nil before
1069 starting the process is an alternative way of setting the inherit flag
1070 for the process which will run. */)
1071 (register Lisp_Object process
, Lisp_Object flag
)
1073 CHECK_PROCESS (process
);
1074 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1078 DEFUN ("set-process-query-on-exit-flag",
1079 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1081 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1082 If the second argument FLAG is non-nil, Emacs will query the user before
1083 exiting or killing a buffer if PROCESS is running. */)
1084 (register Lisp_Object process
, Lisp_Object flag
)
1086 CHECK_PROCESS (process
);
1087 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1091 DEFUN ("process-query-on-exit-flag",
1092 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1094 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1095 (register Lisp_Object process
)
1097 CHECK_PROCESS (process
);
1098 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1101 #ifdef DATAGRAM_SOCKETS
1102 static Lisp_Object
Fprocess_datagram_address (Lisp_Object
);
1105 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1107 doc
: /* Return the contact info of PROCESS; t for a real child.
1108 For a network or serial connection, the value depends on the optional
1109 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1110 SERVICE) for a network connection or (PORT SPEED) for a serial
1111 connection. If KEY is t, the complete contact information for the
1112 connection is returned, else the specific value for the keyword KEY is
1113 returned. See `make-network-process' or `make-serial-process' for a
1114 list of keywords. */)
1115 (register Lisp_Object process
, Lisp_Object key
)
1117 Lisp_Object contact
;
1119 CHECK_PROCESS (process
);
1120 contact
= XPROCESS (process
)->childp
;
1122 #ifdef DATAGRAM_SOCKETS
1123 if (DATAGRAM_CONN_P (process
)
1124 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1125 contact
= Fplist_put (contact
, QCremote
,
1126 Fprocess_datagram_address (process
));
1129 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1131 if (NILP (key
) && NETCONN_P (process
))
1132 return Fcons (Fplist_get (contact
, QChost
),
1133 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1134 if (NILP (key
) && SERIALCONN_P (process
))
1135 return Fcons (Fplist_get (contact
, QCport
),
1136 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1137 return Fplist_get (contact
, key
);
1140 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1142 doc
: /* Return the plist of PROCESS. */)
1143 (register Lisp_Object process
)
1145 CHECK_PROCESS (process
);
1146 return XPROCESS (process
)->plist
;
1149 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1151 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1152 (register Lisp_Object process
, Lisp_Object plist
)
1154 CHECK_PROCESS (process
);
1157 XPROCESS (process
)->plist
= plist
;
1161 #if 0 /* Turned off because we don't currently record this info
1162 in the process. Perhaps add it. */
1163 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1164 doc
: /* Return the connection type of PROCESS.
1165 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1166 a socket connection. */)
1167 (Lisp_Object process
)
1169 return XPROCESS (process
)->type
;
1173 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1174 doc
: /* Return the connection type of PROCESS.
1175 The value is either the symbol `real', `network', or `serial'.
1176 PROCESS may be a process, a buffer, the name of a process or buffer, or
1177 nil, indicating the current buffer's process. */)
1178 (Lisp_Object process
)
1181 proc
= get_process (process
);
1182 return XPROCESS (proc
)->type
;
1185 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1187 doc
: /* Convert network ADDRESS from internal format to a string.
1188 A 4 or 5 element vector represents an IPv4 address (with port number).
1189 An 8 or 9 element vector represents an IPv6 address (with port number).
1190 If optional second argument OMIT-PORT is non-nil, don't include a port
1191 number in the string, even when present in ADDRESS.
1192 Returns nil if format of ADDRESS is invalid. */)
1193 (Lisp_Object address
, Lisp_Object omit_port
)
1198 if (STRINGP (address
)) /* AF_LOCAL */
1201 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1203 register struct Lisp_Vector
*p
= XVECTOR (address
);
1204 EMACS_INT size
= p
->header
.size
;
1205 Lisp_Object args
[10];
1208 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1210 args
[0] = build_string ("%d.%d.%d.%d");
1215 args
[0] = build_string ("%d.%d.%d.%d:%d");
1218 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1220 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1225 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1231 for (i
= 0; i
< nargs
; i
++)
1233 EMACS_INT element
= XINT (p
->contents
[i
]);
1235 if (element
< 0 || element
> 65535)
1238 if (nargs
<= 5 /* IPv4 */
1239 && i
< 4 /* host, not port */
1243 args
[i
+1] = p
->contents
[i
];
1246 return Fformat (nargs
+1, args
);
1249 if (CONSP (address
))
1251 Lisp_Object args
[2];
1252 args
[0] = build_string ("<Family %d>");
1253 args
[1] = Fcar (address
);
1254 return Fformat (2, args
);
1260 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1261 doc
: /* Return a list of all processes. */)
1264 return Fmapcar (Qcdr
, Vprocess_alist
);
1267 /* Starting asynchronous inferior processes. */
1269 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1271 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1272 doc
: /* Start a program in a subprocess. Return the process object for it.
1273 NAME is name for process. It is modified if necessary to make it unique.
1274 BUFFER is the buffer (or buffer name) to associate with the process.
1276 Process output (both standard output and standard error streams) goes
1277 at end of BUFFER, unless you specify an output stream or filter
1278 function to handle the output. BUFFER may also be nil, meaning that
1279 this process is not associated with any buffer.
1281 PROGRAM is the program file name. It is searched for in `exec-path'
1282 (which see). If nil, just associate a pty with the buffer. Remaining
1283 arguments are strings to give program as arguments.
1285 If you want to separate standard output from standard error, invoke
1286 the command through a shell and redirect one of them using the shell
1289 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1290 (ptrdiff_t nargs
, Lisp_Object
*args
)
1292 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1293 register unsigned char **new_argv
;
1295 int count
= SPECPDL_INDEX ();
1299 buffer
= Fget_buffer_create (buffer
);
1301 /* Make sure that the child will be able to chdir to the current
1302 buffer's current directory, or its unhandled equivalent. We
1303 can't just have the child check for an error when it does the
1304 chdir, since it's in a vfork.
1306 We have to GCPRO around this because Fexpand_file_name and
1307 Funhandled_file_name_directory might call a file name handling
1308 function. The argument list is protected by the caller, so all
1309 we really have to worry about is buffer. */
1311 struct gcpro gcpro1
, gcpro2
;
1313 current_dir
= BVAR (current_buffer
, directory
);
1315 GCPRO2 (buffer
, current_dir
);
1317 current_dir
= Funhandled_file_name_directory (current_dir
);
1318 if (NILP (current_dir
))
1319 /* If the file name handler says that current_dir is unreachable, use
1320 a sensible default. */
1321 current_dir
= build_string ("~/");
1322 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1323 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1324 report_file_error ("Setting current directory",
1325 Fcons (BVAR (current_buffer
, directory
), Qnil
));
1331 CHECK_STRING (name
);
1335 if (!NILP (program
))
1336 CHECK_STRING (program
);
1338 proc
= make_process (name
);
1339 /* If an error occurs and we can't start the process, we want to
1340 remove it from the process list. This means that each error
1341 check in create_process doesn't need to call remove_process
1342 itself; it's all taken care of here. */
1343 record_unwind_protect (start_process_unwind
, proc
);
1345 XPROCESS (proc
)->childp
= Qt
;
1346 XPROCESS (proc
)->plist
= Qnil
;
1347 XPROCESS (proc
)->type
= Qreal
;
1348 XPROCESS (proc
)->buffer
= buffer
;
1349 XPROCESS (proc
)->sentinel
= Qnil
;
1350 XPROCESS (proc
)->filter
= Qnil
;
1351 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1354 /* AKA GNUTLS_INITSTAGE(proc). */
1355 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1356 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1359 #ifdef ADAPTIVE_READ_BUFFERING
1360 XPROCESS (proc
)->adaptive_read_buffering
1361 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1362 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1365 /* Make the process marker point into the process buffer (if any). */
1366 if (BUFFERP (buffer
))
1367 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1368 BUF_ZV (XBUFFER (buffer
)),
1369 BUF_ZV_BYTE (XBUFFER (buffer
)));
1372 /* Decide coding systems for communicating with the process. Here
1373 we don't setup the structure coding_system nor pay attention to
1374 unibyte mode. They are done in create_process. */
1376 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1377 Lisp_Object coding_systems
= Qt
;
1378 Lisp_Object val
, *args2
;
1379 struct gcpro gcpro1
, gcpro2
;
1381 val
= Vcoding_system_for_read
;
1384 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1385 args2
[0] = Qstart_process
;
1386 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1387 GCPRO2 (proc
, current_dir
);
1388 if (!NILP (program
))
1389 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1391 if (CONSP (coding_systems
))
1392 val
= XCAR (coding_systems
);
1393 else if (CONSP (Vdefault_process_coding_system
))
1394 val
= XCAR (Vdefault_process_coding_system
);
1396 XPROCESS (proc
)->decode_coding_system
= val
;
1398 val
= Vcoding_system_for_write
;
1401 if (EQ (coding_systems
, Qt
))
1403 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1404 args2
[0] = Qstart_process
;
1405 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1406 GCPRO2 (proc
, current_dir
);
1407 if (!NILP (program
))
1408 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1411 if (CONSP (coding_systems
))
1412 val
= XCDR (coding_systems
);
1413 else if (CONSP (Vdefault_process_coding_system
))
1414 val
= XCDR (Vdefault_process_coding_system
);
1416 XPROCESS (proc
)->encode_coding_system
= val
;
1417 /* Note: At this momemnt, the above coding system may leave
1418 text-conversion or eol-conversion unspecified. They will be
1419 decided after we read output from the process and decode it by
1420 some coding system, or just before we actually send a text to
1425 XPROCESS (proc
)->decoding_buf
= empty_unibyte_string
;
1426 XPROCESS (proc
)->decoding_carryover
= 0;
1427 XPROCESS (proc
)->encoding_buf
= empty_unibyte_string
;
1429 XPROCESS (proc
)->inherit_coding_system_flag
1430 = !(NILP (buffer
) || !inherit_process_coding_system
);
1432 if (!NILP (program
))
1434 /* If program file name is not absolute, search our path for it.
1435 Put the name we will really use in TEM. */
1436 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1437 && !(SCHARS (program
) > 1
1438 && IS_DEVICE_SEP (SREF (program
, 1))))
1440 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1443 GCPRO4 (name
, program
, buffer
, current_dir
);
1444 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1447 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1448 tem
= Fexpand_file_name (tem
, Qnil
);
1452 if (!NILP (Ffile_directory_p (program
)))
1453 error ("Specified program for new process is a directory");
1457 /* If program file name starts with /: for quoting a magic name,
1459 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1460 && SREF (tem
, 1) == ':')
1461 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1464 Lisp_Object arg_encoding
= Qnil
;
1465 struct gcpro gcpro1
;
1468 /* Encode the file name and put it in NEW_ARGV.
1469 That's where the child will use it to execute the program. */
1470 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1472 /* Here we encode arguments by the coding system used for sending
1473 data to the process. We don't support using different coding
1474 systems for encoding arguments and for encoding data sent to the
1477 for (i
= 3; i
< nargs
; i
++)
1479 tem
= Fcons (args
[i
], tem
);
1480 CHECK_STRING (XCAR (tem
));
1481 if (STRING_MULTIBYTE (XCAR (tem
)))
1483 if (NILP (arg_encoding
))
1484 arg_encoding
= (complement_process_encoding_system
1485 (XPROCESS (proc
)->encode_coding_system
));
1487 code_convert_string_norecord
1488 (XCAR (tem
), arg_encoding
, 1));
1495 /* Now that everything is encoded we can collect the strings into
1497 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1498 new_argv
[nargs
- 2] = 0;
1500 for (i
= nargs
- 2; i
-- != 0; )
1502 new_argv
[i
] = SDATA (XCAR (tem
));
1506 create_process (proc
, (char **) new_argv
, current_dir
);
1511 return unbind_to (count
, proc
);
1514 /* This function is the unwind_protect form for Fstart_process. If
1515 PROC doesn't have its pid set, then we know someone has signaled
1516 an error and the process wasn't started successfully, so we should
1517 remove it from the process list. */
1519 start_process_unwind (Lisp_Object proc
)
1521 if (!PROCESSP (proc
))
1524 /* Was PROC started successfully? */
1525 if (XPROCESS (proc
)->pid
== -1)
1526 remove_process (proc
);
1532 create_process_1 (struct atimer
*timer
)
1534 /* Nothing to do. */
1539 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1541 int inchannel
, outchannel
;
1544 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1545 int wait_child_setup
[2];
1549 struct sigaction sigint_action
;
1550 struct sigaction sigquit_action
;
1551 struct sigaction sigpipe_action
;
1553 struct sigaction sighup_action
;
1555 /* Use volatile to protect variables from being clobbered by longjmp. */
1556 volatile int forkin
, forkout
;
1557 volatile int pty_flag
= 0;
1559 extern char **environ
;
1562 inchannel
= outchannel
= -1;
1565 if (!NILP (Vprocess_connection_type
))
1566 outchannel
= inchannel
= allocate_pty ();
1570 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1571 /* On most USG systems it does not work to open the pty's tty here,
1572 then close it and reopen it in the child. */
1574 /* Don't let this terminal become our controlling terminal
1575 (in case we don't have one). */
1576 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1578 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1581 report_file_error ("Opening pty", Qnil
);
1583 forkin
= forkout
= -1;
1584 #endif /* not USG, or USG_SUBTTY_WORKS */
1588 #endif /* HAVE_PTYS */
1593 report_file_error ("Creating pipe", Qnil
);
1599 emacs_close (inchannel
);
1600 emacs_close (forkout
);
1601 report_file_error ("Creating pipe", Qnil
);
1607 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1611 tem
= pipe (wait_child_setup
);
1613 report_file_error ("Creating pipe", Qnil
);
1614 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1616 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1619 emacs_close (wait_child_setup
[0]);
1620 emacs_close (wait_child_setup
[1]);
1621 report_file_error ("Setting file descriptor flags", Qnil
);
1627 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1628 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1631 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1632 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1636 /* Record this as an active process, with its channels.
1637 As a result, child_setup will close Emacs's side of the pipes. */
1638 chan_process
[inchannel
] = process
;
1639 XPROCESS (process
)->infd
= inchannel
;
1640 XPROCESS (process
)->outfd
= outchannel
;
1642 /* Previously we recorded the tty descriptor used in the subprocess.
1643 It was only used for getting the foreground tty process, so now
1644 we just reopen the device (see emacs_get_tty_pgrp) as this is
1645 more portable (see USG_SUBTTY_WORKS above). */
1647 XPROCESS (process
)->pty_flag
= pty_flag
;
1648 XPROCESS (process
)->status
= Qrun
;
1650 /* Delay interrupts until we have a chance to store
1651 the new fork's pid in its process structure */
1652 sigemptyset (&blocked
);
1654 sigaddset (&blocked
, SIGCHLD
);
1656 #ifdef HAVE_WORKING_VFORK
1657 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1658 this sets the parent's signal handlers as well as the child's.
1659 So delay all interrupts whose handlers the child might munge,
1660 and record the current handlers so they can be restored later. */
1661 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1662 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1663 sigaddset (&blocked
, SIGPIPE
); sigaction (SIGPIPE
, 0, &sigpipe_action
);
1665 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1667 #endif /* HAVE_WORKING_VFORK */
1668 pthread_sigmask (SIG_BLOCK
, &blocked
, &procmask
);
1670 FD_SET (inchannel
, &input_wait_mask
);
1671 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1672 if (inchannel
> max_process_desc
)
1673 max_process_desc
= inchannel
;
1675 /* Until we store the proper pid, enable sigchld_handler
1676 to recognize an unknown pid as standing for this process.
1677 It is very important not to let this `marker' value stay
1678 in the table after this function has returned; if it does
1679 it might cause call-process to hang and subsequent asynchronous
1680 processes to get their return values scrambled. */
1681 XPROCESS (process
)->pid
= -1;
1683 /* This must be called after the above line because it may signal an
1685 setup_process_coding_systems (process
);
1690 /* child_setup must clobber environ on systems with true vfork.
1691 Protect it from permanent change. */
1692 char **save_environ
= environ
;
1693 volatile Lisp_Object encoded_current_dir
= ENCODE_FILE (current_dir
);
1698 #endif /* not WINDOWSNT */
1700 int xforkin
= forkin
;
1701 int xforkout
= forkout
;
1703 #if 0 /* This was probably a mistake--it duplicates code later on,
1704 but fails to handle all the cases. */
1705 /* Make sure SIGCHLD is not blocked in the child. */
1706 sigsetmask (SIGEMPTYMASK
);
1709 /* Make the pty be the controlling terminal of the process. */
1711 /* First, disconnect its current controlling terminal. */
1713 /* We tried doing setsid only if pty_flag, but it caused
1714 process_set_signal to fail on SGI when using a pipe. */
1716 /* Make the pty's terminal the controlling terminal. */
1717 if (pty_flag
&& xforkin
>= 0)
1720 /* We ignore the return value
1721 because faith@cs.unc.edu says that is necessary on Linux. */
1722 ioctl (xforkin
, TIOCSCTTY
, 0);
1725 #else /* not HAVE_SETSID */
1727 /* It's very important to call setpgrp here and no time
1728 afterwards. Otherwise, we lose our controlling tty which
1729 is set when we open the pty. */
1732 #endif /* not HAVE_SETSID */
1733 #if defined (LDISC1)
1734 if (pty_flag
&& xforkin
>= 0)
1737 tcgetattr (xforkin
, &t
);
1739 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1740 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1743 #if defined (NTTYDISC) && defined (TIOCSETD)
1744 if (pty_flag
&& xforkin
>= 0)
1746 /* Use new line discipline. */
1747 int ldisc
= NTTYDISC
;
1748 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1753 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1754 can do TIOCSPGRP only to the process's controlling tty. */
1757 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1758 I can't test it since I don't have 4.3. */
1759 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1762 ioctl (j
, TIOCNOTTY
, 0);
1766 /* In order to get a controlling terminal on some versions
1767 of BSD, it is necessary to put the process in pgrp 0
1768 before it opens the terminal. */
1776 #endif /* TIOCNOTTY */
1778 #if !defined (DONT_REOPEN_PTY)
1779 /*** There is a suggestion that this ought to be a
1780 conditional on TIOCSPGRP,
1781 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1782 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1783 that system does seem to need this code, even though
1784 both HAVE_SETSID and TIOCSCTTY are defined. */
1785 /* Now close the pty (if we had it open) and reopen it.
1786 This makes the pty the controlling terminal of the subprocess. */
1790 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1793 emacs_close (xforkin
);
1794 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1798 emacs_write (1, "Couldn't open the pty terminal ", 31);
1799 emacs_write (1, pty_name
, strlen (pty_name
));
1800 emacs_write (1, "\n", 1);
1805 #endif /* not DONT_REOPEN_PTY */
1807 #ifdef SETUP_SLAVE_PTY
1812 #endif /* SETUP_SLAVE_PTY */
1814 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1815 Now reenable it in the child, so it will die when we want it to. */
1817 signal (SIGHUP
, SIG_DFL
);
1819 #endif /* HAVE_PTYS */
1821 signal (SIGINT
, SIG_DFL
);
1822 signal (SIGQUIT
, SIG_DFL
);
1823 /* GConf causes us to ignore SIGPIPE, make sure it is restored
1825 signal (SIGPIPE
, SIG_DFL
);
1827 /* Stop blocking signals in the child. */
1828 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1831 child_setup_tty (xforkout
);
1833 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1834 new_argv
, 1, encoded_current_dir
);
1835 #else /* not WINDOWSNT */
1837 emacs_close (wait_child_setup
[0]);
1839 child_setup (xforkin
, xforkout
, xforkout
,
1840 new_argv
, 1, encoded_current_dir
);
1841 #endif /* not WINDOWSNT */
1843 environ
= save_environ
;
1848 /* This runs in the Emacs process. */
1852 emacs_close (forkin
);
1853 if (forkin
!= forkout
&& forkout
>= 0)
1854 emacs_close (forkout
);
1858 /* vfork succeeded. */
1859 XPROCESS (process
)->pid
= pid
;
1862 register_child (pid
, inchannel
);
1863 #endif /* WINDOWSNT */
1865 /* If the subfork execv fails, and it exits,
1866 this close hangs. I don't know why.
1867 So have an interrupt jar it loose. */
1869 struct atimer
*timer
;
1873 EMACS_SET_SECS_USECS (offset
, 1, 0);
1874 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
1877 emacs_close (forkin
);
1879 cancel_atimer (timer
);
1883 if (forkin
!= forkout
&& forkout
>= 0)
1884 emacs_close (forkout
);
1888 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1891 XPROCESS (process
)->tty_name
= Qnil
;
1893 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1894 /* Wait for child_setup to complete in case that vfork is
1895 actually defined as fork. The descriptor wait_child_setup[1]
1896 of a pipe is closed at the child side either by close-on-exec
1897 on successful execvp or the _exit call in child_setup. */
1901 emacs_close (wait_child_setup
[1]);
1902 emacs_read (wait_child_setup
[0], &dummy
, 1);
1903 emacs_close (wait_child_setup
[0]);
1908 /* Restore the signal state whether vfork succeeded or not.
1909 (We will signal an error, below, if it failed.) */
1910 #ifdef HAVE_WORKING_VFORK
1911 /* Restore the parent's signal handlers. */
1912 sigaction (SIGINT
, &sigint_action
, 0);
1913 sigaction (SIGQUIT
, &sigquit_action
, 0);
1914 sigaction (SIGPIPE
, &sigpipe_action
, 0);
1916 sigaction (SIGHUP
, &sighup_action
, 0);
1918 #endif /* HAVE_WORKING_VFORK */
1919 /* Stop blocking signals in the parent. */
1920 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1922 /* Now generate the error if vfork failed. */
1924 report_file_error ("Doing vfork", Qnil
);
1928 create_pty (Lisp_Object process
)
1930 int inchannel
, outchannel
;
1933 inchannel
= outchannel
= -1;
1936 if (!NILP (Vprocess_connection_type
))
1937 outchannel
= inchannel
= allocate_pty ();
1941 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1942 /* On most USG systems it does not work to open the pty's tty here,
1943 then close it and reopen it in the child. */
1945 /* Don't let this terminal become our controlling terminal
1946 (in case we don't have one). */
1947 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1949 int forkout
= emacs_open (pty_name
, O_RDWR
, 0);
1952 report_file_error ("Opening pty", Qnil
);
1953 #if defined (DONT_REOPEN_PTY)
1954 /* In the case that vfork is defined as fork, the parent process
1955 (Emacs) may send some data before the child process completes
1956 tty options setup. So we setup tty before forking. */
1957 child_setup_tty (forkout
);
1958 #endif /* DONT_REOPEN_PTY */
1959 #endif /* not USG, or USG_SUBTTY_WORKS */
1962 #endif /* HAVE_PTYS */
1965 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1966 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1969 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1970 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1974 /* Record this as an active process, with its channels.
1975 As a result, child_setup will close Emacs's side of the pipes. */
1976 chan_process
[inchannel
] = process
;
1977 XPROCESS (process
)->infd
= inchannel
;
1978 XPROCESS (process
)->outfd
= outchannel
;
1980 /* Previously we recorded the tty descriptor used in the subprocess.
1981 It was only used for getting the foreground tty process, so now
1982 we just reopen the device (see emacs_get_tty_pgrp) as this is
1983 more portable (see USG_SUBTTY_WORKS above). */
1985 XPROCESS (process
)->pty_flag
= pty_flag
;
1986 XPROCESS (process
)->status
= Qrun
;
1987 setup_process_coding_systems (process
);
1989 FD_SET (inchannel
, &input_wait_mask
);
1990 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1991 if (inchannel
> max_process_desc
)
1992 max_process_desc
= inchannel
;
1994 XPROCESS (process
)->pid
= -2;
1997 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2000 XPROCESS (process
)->tty_name
= Qnil
;
2004 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2005 The address family of sa is not included in the result. */
2008 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
2010 Lisp_Object address
;
2013 register struct Lisp_Vector
*p
;
2015 /* Workaround for a bug in getsockname on BSD: Names bound to
2016 sockets in the UNIX domain are inaccessible; getsockname returns
2017 a zero length name. */
2018 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2019 return empty_unibyte_string
;
2021 switch (sa
->sa_family
)
2025 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2026 len
= sizeof (sin
->sin_addr
) + 1;
2027 address
= Fmake_vector (make_number (len
), Qnil
);
2028 p
= XVECTOR (address
);
2029 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2030 cp
= (unsigned char *) &sin
->sin_addr
;
2036 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2037 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2038 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2039 address
= Fmake_vector (make_number (len
), Qnil
);
2040 p
= XVECTOR (address
);
2041 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2042 for (i
= 0; i
< len
; i
++)
2043 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2047 #ifdef HAVE_LOCAL_SOCKETS
2050 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2051 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2052 if (sockun
->sun_path
[i
] == 0)
2054 return make_unibyte_string (sockun
->sun_path
, i
);
2058 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2059 address
= Fcons (make_number (sa
->sa_family
),
2060 Fmake_vector (make_number (len
), Qnil
));
2061 p
= XVECTOR (XCDR (address
));
2062 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2068 p
->contents
[i
++] = make_number (*cp
++);
2074 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2077 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2079 register struct Lisp_Vector
*p
;
2081 if (VECTORP (address
))
2083 p
= XVECTOR (address
);
2084 if (p
->header
.size
== 5)
2087 return sizeof (struct sockaddr_in
);
2090 else if (p
->header
.size
== 9)
2092 *familyp
= AF_INET6
;
2093 return sizeof (struct sockaddr_in6
);
2097 #ifdef HAVE_LOCAL_SOCKETS
2098 else if (STRINGP (address
))
2100 *familyp
= AF_LOCAL
;
2101 return sizeof (struct sockaddr_un
);
2104 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2106 struct sockaddr
*sa
;
2107 *familyp
= XINT (XCAR (address
));
2108 p
= XVECTOR (XCDR (address
));
2109 return p
->header
.size
+ sizeof (sa
->sa_family
);
2114 /* Convert an address object (vector or string) to an internal sockaddr.
2116 The address format has been basically validated by
2117 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2118 it could have come from user data. So if FAMILY is not valid,
2119 we return after zeroing *SA. */
2122 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2124 register struct Lisp_Vector
*p
;
2125 register unsigned char *cp
= NULL
;
2128 memset (sa
, 0, len
);
2130 if (VECTORP (address
))
2132 p
= XVECTOR (address
);
2133 if (family
== AF_INET
)
2135 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2136 len
= sizeof (sin
->sin_addr
) + 1;
2137 i
= XINT (p
->contents
[--len
]);
2138 sin
->sin_port
= htons (i
);
2139 cp
= (unsigned char *)&sin
->sin_addr
;
2140 sa
->sa_family
= family
;
2143 else if (family
== AF_INET6
)
2145 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2146 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2147 len
= sizeof (sin6
->sin6_addr
) + 1;
2148 i
= XINT (p
->contents
[--len
]);
2149 sin6
->sin6_port
= htons (i
);
2150 for (i
= 0; i
< len
; i
++)
2151 if (INTEGERP (p
->contents
[i
]))
2153 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2156 sa
->sa_family
= family
;
2163 else if (STRINGP (address
))
2165 #ifdef HAVE_LOCAL_SOCKETS
2166 if (family
== AF_LOCAL
)
2168 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2169 cp
= SDATA (address
);
2170 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2171 sockun
->sun_path
[i
] = *cp
++;
2172 sa
->sa_family
= family
;
2179 p
= XVECTOR (XCDR (address
));
2180 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2183 for (i
= 0; i
< len
; i
++)
2184 if (INTEGERP (p
->contents
[i
]))
2185 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2188 #ifdef DATAGRAM_SOCKETS
2189 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2191 doc
: /* Get the current datagram address associated with PROCESS. */)
2192 (Lisp_Object process
)
2196 CHECK_PROCESS (process
);
2198 if (!DATAGRAM_CONN_P (process
))
2201 channel
= XPROCESS (process
)->infd
;
2202 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2203 datagram_address
[channel
].len
);
2206 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2208 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2209 Returns nil upon error setting address, ADDRESS otherwise. */)
2210 (Lisp_Object process
, Lisp_Object address
)
2215 CHECK_PROCESS (process
);
2217 if (!DATAGRAM_CONN_P (process
))
2220 channel
= XPROCESS (process
)->infd
;
2222 len
= get_lisp_to_sockaddr_size (address
, &family
);
2223 if (datagram_address
[channel
].len
!= len
)
2225 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2231 static const struct socket_options
{
2232 /* The name of this option. Should be lowercase version of option
2233 name without SO_ prefix. */
2235 /* Option level SOL_... */
2237 /* Option number SO_... */
2239 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2240 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2241 } socket_options
[] =
2243 #ifdef SO_BINDTODEVICE
2244 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2247 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2250 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2253 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2256 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2259 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2262 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2265 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2267 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2270 /* Set option OPT to value VAL on socket S.
2272 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2273 Signals an error if setting a known option fails.
2277 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2280 const struct socket_options
*sopt
;
2285 name
= SSDATA (SYMBOL_NAME (opt
));
2286 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2287 if (strcmp (name
, sopt
->name
) == 0)
2290 switch (sopt
->opttype
)
2295 optval
= NILP (val
) ? 0 : 1;
2296 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2297 &optval
, sizeof (optval
));
2305 optval
= XINT (val
);
2307 error ("Bad option value for %s", name
);
2308 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2309 &optval
, sizeof (optval
));
2313 #ifdef SO_BINDTODEVICE
2316 char devname
[IFNAMSIZ
+1];
2318 /* This is broken, at least in the Linux 2.4 kernel.
2319 To unbind, the arg must be a zero integer, not the empty string.
2320 This should work on all systems. KFS. 2003-09-23. */
2321 memset (devname
, 0, sizeof devname
);
2324 char *arg
= SSDATA (val
);
2325 int len
= min (strlen (arg
), IFNAMSIZ
);
2326 memcpy (devname
, arg
, len
);
2328 else if (!NILP (val
))
2329 error ("Bad option value for %s", name
);
2330 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2339 struct linger linger
;
2342 linger
.l_linger
= 0;
2344 linger
.l_linger
= XINT (val
);
2346 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2347 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2348 &linger
, sizeof (linger
));
2358 report_file_error ("Cannot set network option",
2359 Fcons (opt
, Fcons (val
, Qnil
)));
2360 return (1 << sopt
->optbit
);
2364 DEFUN ("set-network-process-option",
2365 Fset_network_process_option
, Sset_network_process_option
,
2367 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2368 See `make-network-process' for a list of options and values.
2369 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2370 OPTION is not a supported option, return nil instead; otherwise return t. */)
2371 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2374 struct Lisp_Process
*p
;
2376 CHECK_PROCESS (process
);
2377 p
= XPROCESS (process
);
2378 if (!NETCONN1_P (p
))
2379 error ("Process is not a network process");
2383 error ("Process is not running");
2385 if (set_socket_option (s
, option
, value
))
2387 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2391 if (NILP (no_error
))
2392 error ("Unknown or unsupported option");
2398 DEFUN ("serial-process-configure",
2399 Fserial_process_configure
,
2400 Sserial_process_configure
,
2402 doc
: /* Configure speed, bytesize, etc. of a serial process.
2404 Arguments are specified as keyword/argument pairs. Attributes that
2405 are not given are re-initialized from the process's current
2406 configuration (available via the function `process-contact') or set to
2407 reasonable default values. The following arguments are defined:
2413 -- Any of these arguments can be given to identify the process that is
2414 to be configured. If none of these arguments is given, the current
2415 buffer's process is used.
2417 :speed SPEED -- SPEED is the speed of the serial port in bits per
2418 second, also called baud rate. Any value can be given for SPEED, but
2419 most serial ports work only at a few defined values between 1200 and
2420 115200, with 9600 being the most common value. If SPEED is nil, the
2421 serial port is not configured any further, i.e., all other arguments
2422 are ignored. This may be useful for special serial ports such as
2423 Bluetooth-to-serial converters which can only be configured through AT
2424 commands. A value of nil for SPEED can be used only when passed
2425 through `make-serial-process' or `serial-term'.
2427 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2428 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2430 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2431 `odd' (use odd parity), or the symbol `even' (use even parity). If
2432 PARITY is not given, no parity is used.
2434 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2435 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2436 is not given or nil, 1 stopbit is used.
2438 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2439 flowcontrol to be used, which is either nil (don't use flowcontrol),
2440 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2441 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2442 flowcontrol is used.
2444 `serial-process-configure' is called by `make-serial-process' for the
2445 initial configuration of the serial port.
2449 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2451 \(serial-process-configure
2452 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2454 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2456 usage: (serial-process-configure &rest ARGS) */)
2457 (ptrdiff_t nargs
, Lisp_Object
*args
)
2459 struct Lisp_Process
*p
;
2460 Lisp_Object contact
= Qnil
;
2461 Lisp_Object proc
= Qnil
;
2462 struct gcpro gcpro1
;
2464 contact
= Flist (nargs
, args
);
2467 proc
= Fplist_get (contact
, QCprocess
);
2469 proc
= Fplist_get (contact
, QCname
);
2471 proc
= Fplist_get (contact
, QCbuffer
);
2473 proc
= Fplist_get (contact
, QCport
);
2474 proc
= get_process (proc
);
2475 p
= XPROCESS (proc
);
2476 if (!EQ (p
->type
, Qserial
))
2477 error ("Not a serial process");
2479 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2485 serial_configure (p
, contact
);
2491 /* Used by make-serial-process to recover from errors. */
2493 make_serial_process_unwind (Lisp_Object proc
)
2495 if (!PROCESSP (proc
))
2497 remove_process (proc
);
2501 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2503 doc
: /* Create and return a serial port process.
2505 In Emacs, serial port connections are represented by process objects,
2506 so input and output work as for subprocesses, and `delete-process'
2507 closes a serial port connection. However, a serial process has no
2508 process id, it cannot be signaled, and the status codes are different
2509 from normal processes.
2511 `make-serial-process' creates a process and a buffer, on which you
2512 probably want to use `process-send-string'. Try \\[serial-term] for
2513 an interactive terminal. See below for examples.
2515 Arguments are specified as keyword/argument pairs. The following
2516 arguments are defined:
2518 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2519 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2520 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2521 the backslashes in strings).
2523 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2524 which is called by `make-serial-process'.
2526 :name NAME -- NAME is the name of the process. If NAME is not given,
2527 the value of PORT is used.
2529 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2530 with the process. Process output goes at the end of that buffer,
2531 unless you specify an output stream or filter function to handle the
2532 output. If BUFFER is not given, the value of NAME is used.
2534 :coding CODING -- If CODING is a symbol, it specifies the coding
2535 system used for both reading and writing for this process. If CODING
2536 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2537 ENCODING is used for writing.
2539 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2540 the process is running. If BOOL is not given, query before exiting.
2542 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2543 In the stopped state, a serial process does not accept incoming data,
2544 but you can send outgoing data. The stopped state is cleared by
2545 `continue-process' and set by `stop-process'.
2547 :filter FILTER -- Install FILTER as the process filter.
2549 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2551 :plist PLIST -- Install PLIST as the initial plist of the process.
2558 -- These arguments are handled by `serial-process-configure', which is
2559 called by `make-serial-process'.
2561 The original argument list, possibly modified by later configuration,
2562 is available via the function `process-contact'.
2566 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2568 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2570 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2572 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2574 usage: (make-serial-process &rest ARGS) */)
2575 (ptrdiff_t nargs
, Lisp_Object
*args
)
2578 Lisp_Object proc
, contact
, port
;
2579 struct Lisp_Process
*p
;
2580 struct gcpro gcpro1
;
2581 Lisp_Object name
, buffer
;
2582 Lisp_Object tem
, val
;
2583 int specpdl_count
= -1;
2588 contact
= Flist (nargs
, args
);
2591 port
= Fplist_get (contact
, QCport
);
2593 error ("No port specified");
2594 CHECK_STRING (port
);
2596 if (NILP (Fplist_member (contact
, QCspeed
)))
2597 error (":speed not specified");
2598 if (!NILP (Fplist_get (contact
, QCspeed
)))
2599 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2601 name
= Fplist_get (contact
, QCname
);
2604 CHECK_STRING (name
);
2605 proc
= make_process (name
);
2606 specpdl_count
= SPECPDL_INDEX ();
2607 record_unwind_protect (make_serial_process_unwind
, proc
);
2608 p
= XPROCESS (proc
);
2610 fd
= serial_open (SSDATA (port
));
2613 if (fd
> max_process_desc
)
2614 max_process_desc
= fd
;
2615 chan_process
[fd
] = proc
;
2617 buffer
= Fplist_get (contact
, QCbuffer
);
2620 buffer
= Fget_buffer_create (buffer
);
2623 p
->childp
= contact
;
2624 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2626 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2627 p
->filter
= Fplist_get (contact
, QCfilter
);
2629 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2630 p
->kill_without_query
= 1;
2631 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2635 if (!EQ (p
->command
, Qt
))
2637 FD_SET (fd
, &input_wait_mask
);
2638 FD_SET (fd
, &non_keyboard_wait_mask
);
2641 if (BUFFERP (buffer
))
2643 set_marker_both (p
->mark
, buffer
,
2644 BUF_ZV (XBUFFER (buffer
)),
2645 BUF_ZV_BYTE (XBUFFER (buffer
)));
2648 tem
= Fplist_member (contact
, QCcoding
);
2649 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2655 val
= XCAR (XCDR (tem
));
2659 else if (!NILP (Vcoding_system_for_read
))
2660 val
= Vcoding_system_for_read
;
2661 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2662 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2664 p
->decode_coding_system
= val
;
2669 val
= XCAR (XCDR (tem
));
2673 else if (!NILP (Vcoding_system_for_write
))
2674 val
= Vcoding_system_for_write
;
2675 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2676 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2678 p
->encode_coding_system
= val
;
2680 setup_process_coding_systems (proc
);
2681 p
->decoding_buf
= empty_unibyte_string
;
2682 p
->decoding_carryover
= 0;
2683 p
->encoding_buf
= empty_unibyte_string
;
2684 p
->inherit_coding_system_flag
2685 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2687 Fserial_process_configure (nargs
, args
);
2689 specpdl_ptr
= specpdl
+ specpdl_count
;
2695 /* Create a network stream/datagram client/server process. Treated
2696 exactly like a normal process when reading and writing. Primary
2697 differences are in status display and process deletion. A network
2698 connection has no PID; you cannot signal it. All you can do is
2699 stop/continue it and deactivate/close it via delete-process */
2701 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2703 doc
: /* Create and return a network server or client process.
2705 In Emacs, network connections are represented by process objects, so
2706 input and output work as for subprocesses and `delete-process' closes
2707 a network connection. However, a network process has no process id,
2708 it cannot be signaled, and the status codes are different from normal
2711 Arguments are specified as keyword/argument pairs. The following
2712 arguments are defined:
2714 :name NAME -- NAME is name for process. It is modified if necessary
2717 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2718 with the process. Process output goes at end of that buffer, unless
2719 you specify an output stream or filter function to handle the output.
2720 BUFFER may be also nil, meaning that this process is not associated
2723 :host HOST -- HOST is name of the host to connect to, or its IP
2724 address. The symbol `local' specifies the local host. If specified
2725 for a server process, it must be a valid name or address for the local
2726 host, and only clients connecting to that address will be accepted.
2728 :service SERVICE -- SERVICE is name of the service desired, or an
2729 integer specifying a port number to connect to. If SERVICE is t,
2730 a random port number is selected for the server. (If Emacs was
2731 compiled with getaddrinfo, a port number can also be specified as a
2732 string, e.g. "80", as well as an integer. This is not portable.)
2734 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2735 stream type connection, `datagram' creates a datagram type connection,
2736 `seqpacket' creates a reliable datagram connection.
2738 :family FAMILY -- FAMILY is the address (and protocol) family for the
2739 service specified by HOST and SERVICE. The default (nil) is to use
2740 whatever address family (IPv4 or IPv6) that is defined for the host
2741 and port number specified by HOST and SERVICE. Other address families
2743 local -- for a local (i.e. UNIX) address specified by SERVICE.
2744 ipv4 -- use IPv4 address family only.
2745 ipv6 -- use IPv6 address family only.
2747 :local ADDRESS -- ADDRESS is the local address used for the connection.
2748 This parameter is ignored when opening a client process. When specified
2749 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2751 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2752 connection. This parameter is ignored when opening a stream server
2753 process. For a datagram server process, it specifies the initial
2754 setting of the remote datagram address. When specified for a client
2755 process, the FAMILY, HOST, and SERVICE args are ignored.
2757 The format of ADDRESS depends on the address family:
2758 - An IPv4 address is represented as an vector of integers [A B C D P]
2759 corresponding to numeric IP address A.B.C.D and port number P.
2760 - A local address is represented as a string with the address in the
2761 local address space.
2762 - An "unsupported family" address is represented by a cons (F . AV)
2763 where F is the family number and AV is a vector containing the socket
2764 address data with one element per address data byte. Do not rely on
2765 this format in portable code, as it may depend on implementation
2766 defined constants, data sizes, and data structure alignment.
2768 :coding CODING -- If CODING is a symbol, it specifies the coding
2769 system used for both reading and writing for this process. If CODING
2770 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2771 ENCODING is used for writing.
2773 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2774 return without waiting for the connection to complete; instead, the
2775 sentinel function will be called with second arg matching "open" (if
2776 successful) or "failed" when the connect completes. Default is to use
2777 a blocking connect (i.e. wait) for stream type connections.
2779 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2780 running when Emacs is exited.
2782 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2783 In the stopped state, a server process does not accept new
2784 connections, and a client process does not handle incoming traffic.
2785 The stopped state is cleared by `continue-process' and set by
2788 :filter FILTER -- Install FILTER as the process filter.
2790 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2791 process filter are multibyte, otherwise they are unibyte.
2792 If this keyword is not specified, the strings are multibyte if
2793 `default-enable-multibyte-characters' is non-nil.
2795 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2797 :log LOG -- Install LOG as the server process log function. This
2798 function is called when the server accepts a network connection from a
2799 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2800 is the server process, CLIENT is the new process for the connection,
2801 and MESSAGE is a string.
2803 :plist PLIST -- Install PLIST as the new process' initial plist.
2805 :server QLEN -- if QLEN is non-nil, create a server process for the
2806 specified FAMILY, SERVICE, and connection type (stream or datagram).
2807 If QLEN is an integer, it is used as the max. length of the server's
2808 pending connection queue (also known as the backlog); the default
2809 queue length is 5. Default is to create a client process.
2811 The following network options can be specified for this connection:
2813 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2814 :dontroute BOOL -- Only send to directly connected hosts.
2815 :keepalive BOOL -- Send keep-alive messages on network stream.
2816 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2817 :oobinline BOOL -- Place out-of-band data in receive data stream.
2818 :priority INT -- Set protocol defined priority for sent packets.
2819 :reuseaddr BOOL -- Allow reusing a recently used local address
2820 (this is allowed by default for a server process).
2821 :bindtodevice NAME -- bind to interface NAME. Using this may require
2822 special privileges on some systems.
2824 Consult the relevant system programmer's manual pages for more
2825 information on using these options.
2828 A server process will listen for and accept connections from clients.
2829 When a client connection is accepted, a new network process is created
2830 for the connection with the following parameters:
2832 - The client's process name is constructed by concatenating the server
2833 process' NAME and a client identification string.
2834 - If the FILTER argument is non-nil, the client process will not get a
2835 separate process buffer; otherwise, the client's process buffer is a newly
2836 created buffer named after the server process' BUFFER name or process
2837 NAME concatenated with the client identification string.
2838 - The connection type and the process filter and sentinel parameters are
2839 inherited from the server process' TYPE, FILTER and SENTINEL.
2840 - The client process' contact info is set according to the client's
2841 addressing information (typically an IP address and a port number).
2842 - The client process' plist is initialized from the server's plist.
2844 Notice that the FILTER and SENTINEL args are never used directly by
2845 the server process. Also, the BUFFER argument is not used directly by
2846 the server process, but via the optional :log function, accepted (and
2847 failed) connections may be logged in the server process' buffer.
2849 The original argument list, modified with the actual connection
2850 information, is available via the `process-contact' function.
2852 usage: (make-network-process &rest ARGS) */)
2853 (ptrdiff_t nargs
, Lisp_Object
*args
)
2856 Lisp_Object contact
;
2857 struct Lisp_Process
*p
;
2858 #ifdef HAVE_GETADDRINFO
2859 struct addrinfo ai
, *res
, *lres
;
2860 struct addrinfo hints
;
2861 const char *portstring
;
2863 #else /* HAVE_GETADDRINFO */
2864 struct _emacs_addrinfo
2870 struct sockaddr
*ai_addr
;
2871 struct _emacs_addrinfo
*ai_next
;
2873 #endif /* HAVE_GETADDRINFO */
2874 struct sockaddr_in address_in
;
2875 #ifdef HAVE_LOCAL_SOCKETS
2876 struct sockaddr_un address_un
;
2881 int s
= -1, outch
, inch
;
2882 struct gcpro gcpro1
;
2883 int count
= SPECPDL_INDEX ();
2885 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2887 Lisp_Object name
, buffer
, host
, service
, address
;
2888 Lisp_Object filter
, sentinel
;
2889 int is_non_blocking_client
= 0;
2890 int is_server
= 0, backlog
= 5;
2897 /* Save arguments for process-contact and clone-process. */
2898 contact
= Flist (nargs
, args
);
2902 /* Ensure socket support is loaded if available. */
2903 init_winsock (TRUE
);
2906 /* :type TYPE (nil: stream, datagram */
2907 tem
= Fplist_get (contact
, QCtype
);
2909 socktype
= SOCK_STREAM
;
2910 #ifdef DATAGRAM_SOCKETS
2911 else if (EQ (tem
, Qdatagram
))
2912 socktype
= SOCK_DGRAM
;
2914 #ifdef HAVE_SEQPACKET
2915 else if (EQ (tem
, Qseqpacket
))
2916 socktype
= SOCK_SEQPACKET
;
2919 error ("Unsupported connection type");
2922 tem
= Fplist_get (contact
, QCserver
);
2925 /* Don't support network sockets when non-blocking mode is
2926 not available, since a blocked Emacs is not useful. */
2927 #if !defined (O_NONBLOCK) && !defined (O_NDELAY)
2928 error ("Network servers not supported");
2932 backlog
= XINT (tem
);
2936 /* Make QCaddress an alias for :local (server) or :remote (client). */
2937 QCaddress
= is_server
? QClocal
: QCremote
;
2940 if (!is_server
&& socktype
!= SOCK_DGRAM
2941 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2943 #ifndef NON_BLOCKING_CONNECT
2944 error ("Non-blocking connect not supported");
2946 is_non_blocking_client
= 1;
2950 name
= Fplist_get (contact
, QCname
);
2951 buffer
= Fplist_get (contact
, QCbuffer
);
2952 filter
= Fplist_get (contact
, QCfilter
);
2953 sentinel
= Fplist_get (contact
, QCsentinel
);
2955 CHECK_STRING (name
);
2957 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2958 ai
.ai_socktype
= socktype
;
2963 /* :local ADDRESS or :remote ADDRESS */
2964 address
= Fplist_get (contact
, QCaddress
);
2965 if (!NILP (address
))
2967 host
= service
= Qnil
;
2969 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2970 error ("Malformed :address");
2971 ai
.ai_family
= family
;
2972 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2973 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2977 /* :family FAMILY -- nil (for Inet), local, or integer. */
2978 tem
= Fplist_get (contact
, QCfamily
);
2981 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2987 #ifdef HAVE_LOCAL_SOCKETS
2988 else if (EQ (tem
, Qlocal
))
2992 else if (EQ (tem
, Qipv6
))
2995 else if (EQ (tem
, Qipv4
))
2997 else if (INTEGERP (tem
))
2998 family
= XINT (tem
);
3000 error ("Unknown address family");
3002 ai
.ai_family
= family
;
3004 /* :service SERVICE -- string, integer (port number), or t (random port). */
3005 service
= Fplist_get (contact
, QCservice
);
3007 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3008 host
= Fplist_get (contact
, QChost
);
3011 if (EQ (host
, Qlocal
))
3012 /* Depending on setup, "localhost" may map to different IPv4 and/or
3013 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
3014 host
= build_string ("127.0.0.1");
3015 CHECK_STRING (host
);
3018 #ifdef HAVE_LOCAL_SOCKETS
3019 if (family
== AF_LOCAL
)
3023 message (":family local ignores the :host \"%s\" property",
3025 contact
= Fplist_put (contact
, QChost
, Qnil
);
3028 CHECK_STRING (service
);
3029 memset (&address_un
, 0, sizeof address_un
);
3030 address_un
.sun_family
= AF_LOCAL
;
3031 strncpy (address_un
.sun_path
, SSDATA (service
), sizeof address_un
.sun_path
);
3032 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3033 ai
.ai_addrlen
= sizeof address_un
;
3038 /* Slow down polling to every ten seconds.
3039 Some kernels have a bug which causes retrying connect to fail
3040 after a connect. Polling can interfere with gethostbyname too. */
3041 #ifdef POLL_FOR_INPUT
3042 if (socktype
!= SOCK_DGRAM
)
3044 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3045 bind_polling_period (10);
3049 #ifdef HAVE_GETADDRINFO
3050 /* If we have a host, use getaddrinfo to resolve both host and service.
3051 Otherwise, use getservbyname to lookup the service. */
3055 /* SERVICE can either be a string or int.
3056 Convert to a C string for later use by getaddrinfo. */
3057 if (EQ (service
, Qt
))
3059 else if (INTEGERP (service
))
3061 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3062 portstring
= portbuf
;
3066 CHECK_STRING (service
);
3067 portstring
= SSDATA (service
);
3072 memset (&hints
, 0, sizeof (hints
));
3074 hints
.ai_family
= family
;
3075 hints
.ai_socktype
= socktype
;
3076 hints
.ai_protocol
= 0;
3078 #ifdef HAVE_RES_INIT
3082 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3084 #ifdef HAVE_GAI_STRERROR
3085 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3087 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3093 #endif /* HAVE_GETADDRINFO */
3095 /* We end up here if getaddrinfo is not defined, or in case no hostname
3096 has been specified (e.g. for a local server process). */
3098 if (EQ (service
, Qt
))
3100 else if (INTEGERP (service
))
3101 port
= htons ((unsigned short) XINT (service
));
3104 struct servent
*svc_info
;
3105 CHECK_STRING (service
);
3106 svc_info
= getservbyname (SSDATA (service
),
3107 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3109 error ("Unknown service: %s", SDATA (service
));
3110 port
= svc_info
->s_port
;
3113 memset (&address_in
, 0, sizeof address_in
);
3114 address_in
.sin_family
= family
;
3115 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3116 address_in
.sin_port
= port
;
3118 #ifndef HAVE_GETADDRINFO
3121 struct hostent
*host_info_ptr
;
3123 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3124 as it may `hang' Emacs for a very long time. */
3128 #ifdef HAVE_RES_INIT
3132 host_info_ptr
= gethostbyname (SDATA (host
));
3137 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3138 host_info_ptr
->h_length
);
3139 family
= host_info_ptr
->h_addrtype
;
3140 address_in
.sin_family
= family
;
3143 /* Attempt to interpret host as numeric inet address */
3145 unsigned long numeric_addr
;
3146 numeric_addr
= inet_addr (SSDATA (host
));
3147 if (numeric_addr
== -1)
3148 error ("Unknown host \"%s\"", SDATA (host
));
3150 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3151 sizeof (address_in
.sin_addr
));
3155 #endif /* not HAVE_GETADDRINFO */
3157 ai
.ai_family
= family
;
3158 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3159 ai
.ai_addrlen
= sizeof address_in
;
3163 /* Do this in case we never enter the for-loop below. */
3164 count1
= SPECPDL_INDEX ();
3167 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3176 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3183 #ifdef DATAGRAM_SOCKETS
3184 if (!is_server
&& socktype
== SOCK_DGRAM
)
3186 #endif /* DATAGRAM_SOCKETS */
3188 #ifdef NON_BLOCKING_CONNECT
3189 if (is_non_blocking_client
)
3192 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3194 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3206 /* Make us close S if quit. */
3207 record_unwind_protect (close_file_unwind
, make_number (s
));
3209 /* Parse network options in the arg list.
3210 We simply ignore anything which isn't a known option (including other keywords).
3211 An error is signaled if setting a known option fails. */
3212 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3213 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3217 /* Configure as a server socket. */
3219 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3220 explicit :reuseaddr key to override this. */
3221 #ifdef HAVE_LOCAL_SOCKETS
3222 if (family
!= AF_LOCAL
)
3224 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3227 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3228 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3231 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3232 report_file_error ("Cannot bind server socket", Qnil
);
3234 #ifdef HAVE_GETSOCKNAME
3235 if (EQ (service
, Qt
))
3237 struct sockaddr_in sa1
;
3238 socklen_t len1
= sizeof (sa1
);
3239 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3241 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3242 service
= make_number (ntohs (sa1
.sin_port
));
3243 contact
= Fplist_put (contact
, QCservice
, service
);
3248 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3249 report_file_error ("Cannot listen on server socket", Qnil
);
3257 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3260 if (ret
== 0 || xerrno
== EISCONN
)
3262 /* The unwind-protect will be discarded afterwards.
3263 Likewise for immediate_quit. */
3267 #ifdef NON_BLOCKING_CONNECT
3269 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3273 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3280 if (xerrno
== EINTR
)
3282 /* Unlike most other syscalls connect() cannot be called
3283 again. (That would return EALREADY.) The proper way to
3284 wait for completion is select(). */
3292 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3299 report_file_error ("select failed", Qnil
);
3303 len
= sizeof xerrno
;
3304 eassert (FD_ISSET (s
, &fdset
));
3305 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3306 report_file_error ("getsockopt failed", Qnil
);
3308 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3312 #endif /* !WINDOWSNT */
3316 /* Discard the unwind protect closing S. */
3317 specpdl_ptr
= specpdl
+ count1
;
3322 if (xerrno
== EINTR
)
3329 #ifdef DATAGRAM_SOCKETS
3330 if (socktype
== SOCK_DGRAM
)
3332 if (datagram_address
[s
].sa
)
3334 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3335 datagram_address
[s
].len
= lres
->ai_addrlen
;
3339 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3340 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3343 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3344 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3345 conv_lisp_to_sockaddr (rfamily
, remote
,
3346 datagram_address
[s
].sa
, rlen
);
3350 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3353 contact
= Fplist_put (contact
, QCaddress
,
3354 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3355 #ifdef HAVE_GETSOCKNAME
3358 struct sockaddr_in sa1
;
3359 socklen_t len1
= sizeof (sa1
);
3360 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3361 contact
= Fplist_put (contact
, QClocal
,
3362 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3369 #ifdef HAVE_GETADDRINFO
3378 /* Discard the unwind protect for closing S, if any. */
3379 specpdl_ptr
= specpdl
+ count1
;
3381 /* Unwind bind_polling_period and request_sigio. */
3382 unbind_to (count
, Qnil
);
3386 /* If non-blocking got this far - and failed - assume non-blocking is
3387 not supported after all. This is probably a wrong assumption, but
3388 the normal blocking calls to open-network-stream handles this error
3390 if (is_non_blocking_client
)
3395 report_file_error ("make server process failed", contact
);
3397 report_file_error ("make client process failed", contact
);
3404 buffer
= Fget_buffer_create (buffer
);
3405 proc
= make_process (name
);
3407 chan_process
[inch
] = proc
;
3410 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3413 fcntl (inch
, F_SETFL
, O_NDELAY
);
3417 p
= XPROCESS (proc
);
3419 p
->childp
= contact
;
3420 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3424 p
->sentinel
= sentinel
;
3426 p
->log
= Fplist_get (contact
, QClog
);
3427 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3428 p
->kill_without_query
= 1;
3429 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3434 if (is_server
&& socktype
!= SOCK_DGRAM
)
3435 p
->status
= Qlisten
;
3437 /* Make the process marker point into the process buffer (if any). */
3438 if (BUFFERP (buffer
))
3439 set_marker_both (p
->mark
, buffer
,
3440 BUF_ZV (XBUFFER (buffer
)),
3441 BUF_ZV_BYTE (XBUFFER (buffer
)));
3443 #ifdef NON_BLOCKING_CONNECT
3444 if (is_non_blocking_client
)
3446 /* We may get here if connect did succeed immediately. However,
3447 in that case, we still need to signal this like a non-blocking
3449 p
->status
= Qconnect
;
3450 if (!FD_ISSET (inch
, &connect_wait_mask
))
3452 FD_SET (inch
, &connect_wait_mask
);
3453 FD_SET (inch
, &write_mask
);
3454 num_pending_connects
++;
3459 /* A server may have a client filter setting of Qt, but it must
3460 still listen for incoming connects unless it is stopped. */
3461 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3462 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3464 FD_SET (inch
, &input_wait_mask
);
3465 FD_SET (inch
, &non_keyboard_wait_mask
);
3468 if (inch
> max_process_desc
)
3469 max_process_desc
= inch
;
3471 tem
= Fplist_member (contact
, QCcoding
);
3472 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3473 tem
= Qnil
; /* No error message (too late!). */
3476 /* Setup coding systems for communicating with the network stream. */
3477 struct gcpro inner_gcpro1
;
3478 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3479 Lisp_Object coding_systems
= Qt
;
3480 Lisp_Object fargs
[5], val
;
3484 val
= XCAR (XCDR (tem
));
3488 else if (!NILP (Vcoding_system_for_read
))
3489 val
= Vcoding_system_for_read
;
3490 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3491 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3492 /* We dare not decode end-of-line format by setting VAL to
3493 Qraw_text, because the existing Emacs Lisp libraries
3494 assume that they receive bare code including a sequene of
3499 if (NILP (host
) || NILP (service
))
3500 coding_systems
= Qnil
;
3503 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3504 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3505 GCPRO1_VAR (proc
, inner_gcpro
);
3506 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3507 UNGCPRO_VAR (inner_gcpro
);
3509 if (CONSP (coding_systems
))
3510 val
= XCAR (coding_systems
);
3511 else if (CONSP (Vdefault_process_coding_system
))
3512 val
= XCAR (Vdefault_process_coding_system
);
3516 p
->decode_coding_system
= val
;
3520 val
= XCAR (XCDR (tem
));
3524 else if (!NILP (Vcoding_system_for_write
))
3525 val
= Vcoding_system_for_write
;
3526 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3530 if (EQ (coding_systems
, Qt
))
3532 if (NILP (host
) || NILP (service
))
3533 coding_systems
= Qnil
;
3536 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3537 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3538 GCPRO1_VAR (proc
, inner_gcpro
);
3539 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3540 UNGCPRO_VAR (inner_gcpro
);
3543 if (CONSP (coding_systems
))
3544 val
= XCDR (coding_systems
);
3545 else if (CONSP (Vdefault_process_coding_system
))
3546 val
= XCDR (Vdefault_process_coding_system
);
3550 p
->encode_coding_system
= val
;
3552 setup_process_coding_systems (proc
);
3554 p
->decoding_buf
= empty_unibyte_string
;
3555 p
->decoding_carryover
= 0;
3556 p
->encoding_buf
= empty_unibyte_string
;
3558 p
->inherit_coding_system_flag
3559 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3566 #if defined (HAVE_NET_IF_H)
3569 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3570 doc
: /* Return an alist of all network interfaces and their network address.
3571 Each element is a cons, the car of which is a string containing the
3572 interface name, and the cdr is the network address in internal
3573 format; see the description of ADDRESS in `make-network-process'. */)
3576 struct ifconf ifconf
;
3577 struct ifreq
*ifreq
;
3579 ptrdiff_t buf_size
= 512;
3583 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3589 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3590 ifconf
.ifc_buf
= buf
;
3591 ifconf
.ifc_len
= buf_size
;
3592 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3599 while (ifconf
.ifc_len
== buf_size
);
3604 ifreq
= ifconf
.ifc_req
;
3605 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3607 struct ifreq
*ifq
= ifreq
;
3608 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3609 #define SIZEOF_IFREQ(sif) \
3610 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3611 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3613 int len
= SIZEOF_IFREQ (ifq
);
3615 int len
= sizeof (*ifreq
);
3617 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3619 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
3621 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3624 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3625 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3626 res
= Fcons (Fcons (build_string (namebuf
),
3627 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3628 sizeof (struct sockaddr
))),
3635 #endif /* SIOCGIFCONF */
3637 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
3641 const char *flag_sym
;
3644 static const struct ifflag_def ifflag_table
[] = {
3648 #ifdef IFF_BROADCAST
3649 { IFF_BROADCAST
, "broadcast" },
3652 { IFF_DEBUG
, "debug" },
3655 { IFF_LOOPBACK
, "loopback" },
3657 #ifdef IFF_POINTOPOINT
3658 { IFF_POINTOPOINT
, "pointopoint" },
3661 { IFF_RUNNING
, "running" },
3664 { IFF_NOARP
, "noarp" },
3667 { IFF_PROMISC
, "promisc" },
3669 #ifdef IFF_NOTRAILERS
3670 #ifdef NS_IMPL_COCOA
3671 /* Really means smart, notrailers is obsolete */
3672 { IFF_NOTRAILERS
, "smart" },
3674 { IFF_NOTRAILERS
, "notrailers" },
3678 { IFF_ALLMULTI
, "allmulti" },
3681 { IFF_MASTER
, "master" },
3684 { IFF_SLAVE
, "slave" },
3686 #ifdef IFF_MULTICAST
3687 { IFF_MULTICAST
, "multicast" },
3690 { IFF_PORTSEL
, "portsel" },
3692 #ifdef IFF_AUTOMEDIA
3693 { IFF_AUTOMEDIA
, "automedia" },
3696 { IFF_DYNAMIC
, "dynamic" },
3699 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3702 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3705 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3708 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3711 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3716 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3717 doc
: /* Return information about network interface named IFNAME.
3718 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3719 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3720 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3721 FLAGS is the current flags of the interface. */)
3722 (Lisp_Object ifname
)
3725 Lisp_Object res
= Qnil
;
3729 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3730 && defined HAVE_GETIFADDRS && defined LLADDR)
3731 struct ifaddrs
*ifap
;
3734 CHECK_STRING (ifname
);
3736 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3737 strncpy (rq
.ifr_name
, SSDATA (ifname
), sizeof (rq
.ifr_name
));
3739 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3744 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3745 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3747 int flags
= rq
.ifr_flags
;
3748 const struct ifflag_def
*fp
;
3751 /* If flags is smaller than int (i.e. short) it may have the high bit set
3752 due to IFF_MULTICAST. In that case, sign extending it into
3754 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3755 flags
= (unsigned short) rq
.ifr_flags
;
3758 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3760 if (flags
& fp
->flag_bit
)
3762 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3763 flags
-= fp
->flag_bit
;
3766 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3770 elt
= Fcons (make_number (fnum
), elt
);
3775 res
= Fcons (elt
, res
);
3778 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3779 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3781 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3782 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3786 for (n
= 0; n
< 6; n
++)
3787 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3788 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3790 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3791 if (getifaddrs (&ifap
) != -1)
3793 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3794 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3797 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3799 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3800 unsigned char linkaddr
[6];
3803 if (it
->ifa_addr
->sa_family
!= AF_LINK
3804 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3805 || sdl
->sdl_alen
!= 6)
3808 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3809 for (n
= 0; n
< 6; n
++)
3810 p
->contents
[n
] = make_number (linkaddr
[n
]);
3812 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3816 #ifdef HAVE_FREEIFADDRS
3820 #endif /* HAVE_GETIFADDRS && LLADDR */
3822 res
= Fcons (elt
, res
);
3825 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3826 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3829 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3830 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3832 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3836 res
= Fcons (elt
, res
);
3839 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3840 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3843 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3846 res
= Fcons (elt
, res
);
3849 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3850 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3853 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3856 res
= Fcons (elt
, res
);
3860 return any
? res
: Qnil
;
3863 #endif /* defined (HAVE_NET_IF_H) */
3865 /* Turn off input and output for process PROC. */
3868 deactivate_process (Lisp_Object proc
)
3870 register int inchannel
, outchannel
;
3871 register struct Lisp_Process
*p
= XPROCESS (proc
);
3874 /* Delete GnuTLS structures in PROC, if any. */
3875 emacs_gnutls_deinit (proc
);
3876 #endif /* HAVE_GNUTLS */
3878 inchannel
= p
->infd
;
3879 outchannel
= p
->outfd
;
3881 #ifdef ADAPTIVE_READ_BUFFERING
3882 if (p
->read_output_delay
> 0)
3884 if (--process_output_delay_count
< 0)
3885 process_output_delay_count
= 0;
3886 p
->read_output_delay
= 0;
3887 p
->read_output_skip
= 0;
3893 /* Beware SIGCHLD hereabouts. */
3894 flush_pending_output (inchannel
);
3895 emacs_close (inchannel
);
3896 if (outchannel
>= 0 && outchannel
!= inchannel
)
3897 emacs_close (outchannel
);
3901 #ifdef DATAGRAM_SOCKETS
3902 if (DATAGRAM_CHAN_P (inchannel
))
3904 xfree (datagram_address
[inchannel
].sa
);
3905 datagram_address
[inchannel
].sa
= 0;
3906 datagram_address
[inchannel
].len
= 0;
3909 chan_process
[inchannel
] = Qnil
;
3910 FD_CLR (inchannel
, &input_wait_mask
);
3911 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3912 #ifdef NON_BLOCKING_CONNECT
3913 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3915 FD_CLR (inchannel
, &connect_wait_mask
);
3916 FD_CLR (inchannel
, &write_mask
);
3917 if (--num_pending_connects
< 0)
3921 if (inchannel
== max_process_desc
)
3924 /* We just closed the highest-numbered process input descriptor,
3925 so recompute the highest-numbered one now. */
3926 max_process_desc
= 0;
3927 for (i
= 0; i
< MAXDESC
; i
++)
3928 if (!NILP (chan_process
[i
]))
3929 max_process_desc
= i
;
3935 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3937 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3938 It is read into the process' buffers or given to their filter functions.
3939 Non-nil arg PROCESS means do not return until some output has been received
3942 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3943 and milliseconds to wait; return after that much time whether or not
3944 there is any subprocess output. If SECONDS is a floating point number,
3945 it specifies a fractional number of seconds to wait.
3946 The MILLISEC argument is obsolete and should be avoided.
3948 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3949 from PROCESS, suspending reading output from other processes.
3950 If JUST-THIS-ONE is an integer, don't run any timers either.
3951 Return non-nil if we received any output before the timeout expired. */)
3952 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3954 int secs
, usecs
= 0;
3956 if (! NILP (process
))
3957 CHECK_PROCESS (process
);
3959 just_this_one
= Qnil
;
3961 if (!NILP (millisec
))
3962 { /* Obsolete calling convention using integers rather than floats. */
3963 CHECK_NUMBER (millisec
);
3965 seconds
= make_float (XINT (millisec
) / 1000.0);
3968 CHECK_NUMBER (seconds
);
3969 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3973 if (!NILP (seconds
))
3975 if (INTEGERP (seconds
))
3976 secs
= XINT (seconds
);
3977 else if (FLOATP (seconds
))
3979 double timeout
= XFLOAT_DATA (seconds
);
3980 secs
= (int) timeout
;
3981 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3984 wrong_type_argument (Qnumberp
, seconds
);
3986 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3987 secs
= -1, usecs
= 0;
3990 secs
= NILP (process
) ? -1 : 0;
3993 (wait_reading_process_output (secs
, usecs
, 0, 0,
3995 !NILP (process
) ? XPROCESS (process
) : NULL
,
3996 NILP (just_this_one
) ? 0 :
3997 !INTEGERP (just_this_one
) ? 1 : -1)
4001 /* Accept a connection for server process SERVER on CHANNEL. */
4003 static int connect_counter
= 0;
4006 server_accept_connection (Lisp_Object server
, int channel
)
4008 Lisp_Object proc
, caller
, name
, buffer
;
4009 Lisp_Object contact
, host
, service
;
4010 struct Lisp_Process
*ps
= XPROCESS (server
);
4011 struct Lisp_Process
*p
;
4015 struct sockaddr_in in
;
4017 struct sockaddr_in6 in6
;
4019 #ifdef HAVE_LOCAL_SOCKETS
4020 struct sockaddr_un un
;
4023 socklen_t len
= sizeof saddr
;
4025 s
= accept (channel
, &saddr
.sa
, &len
);
4034 if (code
== EWOULDBLOCK
)
4038 if (!NILP (ps
->log
))
4039 call3 (ps
->log
, server
, Qnil
,
4040 concat3 (build_string ("accept failed with code"),
4041 Fnumber_to_string (make_number (code
)),
4042 build_string ("\n")));
4048 /* Setup a new process to handle the connection. */
4050 /* Generate a unique identification of the caller, and build contact
4051 information for this process. */
4054 switch (saddr
.sa
.sa_family
)
4058 Lisp_Object args
[5];
4059 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4060 args
[0] = build_string ("%d.%d.%d.%d");
4061 args
[1] = make_number (*ip
++);
4062 args
[2] = make_number (*ip
++);
4063 args
[3] = make_number (*ip
++);
4064 args
[4] = make_number (*ip
++);
4065 host
= Fformat (5, args
);
4066 service
= make_number (ntohs (saddr
.in
.sin_port
));
4068 args
[0] = build_string (" <%s:%d>");
4071 caller
= Fformat (3, args
);
4078 Lisp_Object args
[9];
4079 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4081 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4082 for (i
= 0; i
< 8; i
++)
4083 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4084 host
= Fformat (9, args
);
4085 service
= make_number (ntohs (saddr
.in
.sin_port
));
4087 args
[0] = build_string (" <[%s]:%d>");
4090 caller
= Fformat (3, args
);
4095 #ifdef HAVE_LOCAL_SOCKETS
4099 caller
= Fnumber_to_string (make_number (connect_counter
));
4100 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4104 /* Create a new buffer name for this process if it doesn't have a
4105 filter. The new buffer name is based on the buffer name or
4106 process name of the server process concatenated with the caller
4109 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4113 buffer
= ps
->buffer
;
4115 buffer
= Fbuffer_name (buffer
);
4120 buffer
= concat2 (buffer
, caller
);
4121 buffer
= Fget_buffer_create (buffer
);
4125 /* Generate a unique name for the new server process. Combine the
4126 server process name with the caller identification. */
4128 name
= concat2 (ps
->name
, caller
);
4129 proc
= make_process (name
);
4131 chan_process
[s
] = proc
;
4134 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4137 fcntl (s
, F_SETFL
, O_NDELAY
);
4141 p
= XPROCESS (proc
);
4143 /* Build new contact information for this setup. */
4144 contact
= Fcopy_sequence (ps
->childp
);
4145 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4146 contact
= Fplist_put (contact
, QChost
, host
);
4147 if (!NILP (service
))
4148 contact
= Fplist_put (contact
, QCservice
, service
);
4149 contact
= Fplist_put (contact
, QCremote
,
4150 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4151 #ifdef HAVE_GETSOCKNAME
4153 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4154 contact
= Fplist_put (contact
, QClocal
,
4155 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4158 p
->childp
= contact
;
4159 p
->plist
= Fcopy_sequence (ps
->plist
);
4163 p
->sentinel
= ps
->sentinel
;
4164 p
->filter
= ps
->filter
;
4171 /* Client processes for accepted connections are not stopped initially. */
4172 if (!EQ (p
->filter
, Qt
))
4174 FD_SET (s
, &input_wait_mask
);
4175 FD_SET (s
, &non_keyboard_wait_mask
);
4178 if (s
> max_process_desc
)
4179 max_process_desc
= s
;
4181 /* Setup coding system for new process based on server process.
4182 This seems to be the proper thing to do, as the coding system
4183 of the new process should reflect the settings at the time the
4184 server socket was opened; not the current settings. */
4186 p
->decode_coding_system
= ps
->decode_coding_system
;
4187 p
->encode_coding_system
= ps
->encode_coding_system
;
4188 setup_process_coding_systems (proc
);
4190 p
->decoding_buf
= empty_unibyte_string
;
4191 p
->decoding_carryover
= 0;
4192 p
->encoding_buf
= empty_unibyte_string
;
4194 p
->inherit_coding_system_flag
4195 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4197 if (!NILP (ps
->log
))
4198 call3 (ps
->log
, server
, proc
,
4199 concat3 (build_string ("accept from "),
4200 (STRINGP (host
) ? host
: build_string ("-")),
4201 build_string ("\n")));
4203 if (!NILP (p
->sentinel
))
4204 exec_sentinel (proc
,
4205 concat3 (build_string ("open from "),
4206 (STRINGP (host
) ? host
: build_string ("-")),
4207 build_string ("\n")));
4210 /* This variable is different from waiting_for_input in keyboard.c.
4211 It is used to communicate to a lisp process-filter/sentinel (via the
4212 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4213 for user-input when that process-filter was called.
4214 waiting_for_input cannot be used as that is by definition 0 when
4215 lisp code is being evalled.
4216 This is also used in record_asynch_buffer_change.
4217 For that purpose, this must be 0
4218 when not inside wait_reading_process_output. */
4219 static int waiting_for_user_input_p
;
4222 wait_reading_process_output_unwind (Lisp_Object data
)
4224 waiting_for_user_input_p
= XINT (data
);
4228 /* This is here so breakpoints can be put on it. */
4230 wait_reading_process_output_1 (void)
4234 /* Use a wrapper around select to work around a bug in gdb 5.3.
4235 Normally, the wrapper is optimized away by inlining.
4237 If emacs is stopped inside select, the gdb backtrace doesn't
4238 show the function which called select, so it is practically
4239 impossible to step through wait_reading_process_output. */
4243 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4245 return select (n
, rfd
, wfd
, xfd
, tmo
);
4247 #define select select_wrapper
4250 /* Read and dispose of subprocess output while waiting for timeout to
4251 elapse and/or keyboard input to be available.
4254 timeout in seconds, or
4255 zero for no limit, or
4256 -1 means gobble data immediately available but don't wait for any.
4259 an additional duration to wait, measured in microseconds.
4260 If this is nonzero and time_limit is 0, then the timeout
4261 consists of MICROSECS only.
4263 READ_KBD is a lisp value:
4264 0 to ignore keyboard input, or
4265 1 to return when input is available, or
4266 -1 meaning caller will actually read the input, so don't throw to
4267 the quit handler, or
4269 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4270 output that arrives.
4272 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4273 (and gobble terminal input into the buffer if any arrives).
4275 If WAIT_PROC is specified, wait until something arrives from that
4276 process. The return value is true if we read some input from
4279 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4280 (suspending output from other processes). A negative value
4281 means don't run any timers either.
4283 If WAIT_PROC is specified, then the function returns true if we
4284 received input from that process before the timeout elapsed.
4285 Otherwise, return true if we received input from any process. */
4288 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4290 Lisp_Object wait_for_cell
,
4291 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4293 register int channel
, nfds
;
4294 SELECT_TYPE Available
;
4295 SELECT_TYPE Writeok
;
4297 int check_delay
, no_avail
;
4300 EMACS_TIME timeout
, end_time
;
4301 int wait_channel
= -1;
4302 int got_some_input
= 0;
4303 int count
= SPECPDL_INDEX ();
4305 FD_ZERO (&Available
);
4308 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4309 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4310 message ("Blocking call to accept-process-output with quit inhibited!!");
4312 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4313 if (wait_proc
!= NULL
)
4314 wait_channel
= wait_proc
->infd
;
4316 record_unwind_protect (wait_reading_process_output_unwind
,
4317 make_number (waiting_for_user_input_p
));
4318 waiting_for_user_input_p
= read_kbd
;
4320 /* Since we may need to wait several times,
4321 compute the absolute time to return at. */
4322 if (time_limit
|| microsecs
)
4324 EMACS_GET_TIME (end_time
);
4325 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4326 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4331 int timeout_reduced_for_timers
= 0;
4333 /* If calling from keyboard input, do not quit
4334 since we want to return C-g as an input character.
4335 Otherwise, do pending quit if requested. */
4340 process_pending_signals ();
4343 /* Exit now if the cell we're waiting for became non-nil. */
4344 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4347 /* Compute time from now till when time limit is up */
4348 /* Exit if already run out */
4349 if (time_limit
== -1)
4351 /* -1 specified for timeout means
4352 gobble output available now
4353 but don't wait at all. */
4355 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4357 else if (time_limit
|| microsecs
)
4359 EMACS_GET_TIME (timeout
);
4360 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4361 if (EMACS_TIME_NEG_P (timeout
))
4366 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4369 /* Normally we run timers here.
4370 But not if wait_for_cell; in those cases,
4371 the wait is supposed to be short,
4372 and those callers cannot handle running arbitrary Lisp code here. */
4373 if (NILP (wait_for_cell
)
4374 && just_wait_proc
>= 0)
4376 EMACS_TIME timer_delay
;
4380 int old_timers_run
= timers_run
;
4381 struct buffer
*old_buffer
= current_buffer
;
4382 Lisp_Object old_window
= selected_window
;
4384 timer_delay
= timer_check ();
4386 /* If a timer has run, this might have changed buffers
4387 an alike. Make read_key_sequence aware of that. */
4388 if (timers_run
!= old_timers_run
4389 && (old_buffer
!= current_buffer
4390 || !EQ (old_window
, selected_window
))
4391 && waiting_for_user_input_p
== -1)
4392 record_asynch_buffer_change ();
4394 if (timers_run
!= old_timers_run
&& do_display
)
4395 /* We must retry, since a timer may have requeued itself
4396 and that could alter the time_delay. */
4397 redisplay_preserve_echo_area (9);
4401 while (!detect_input_pending ());
4403 /* If there is unread keyboard input, also return. */
4405 && requeued_events_pending_p ())
4408 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4410 EMACS_TIME difference
;
4411 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4412 if (EMACS_TIME_NEG_P (difference
))
4414 timeout
= timer_delay
;
4415 timeout_reduced_for_timers
= 1;
4418 /* If time_limit is -1, we are not going to wait at all. */
4419 else if (time_limit
!= -1)
4421 /* This is so a breakpoint can be put here. */
4422 wait_reading_process_output_1 ();
4426 /* Cause C-g and alarm signals to take immediate action,
4427 and cause input available signals to zero out timeout.
4429 It is important that we do this before checking for process
4430 activity. If we get a SIGCHLD after the explicit checks for
4431 process activity, timeout is the only way we will know. */
4433 set_waiting_for_input (&timeout
);
4435 /* If status of something has changed, and no input is
4436 available, notify the user of the change right away. After
4437 this explicit check, we'll let the SIGCHLD handler zap
4438 timeout to get our attention. */
4439 if (update_tick
!= process_tick
)
4444 if (kbd_on_hold_p ())
4447 Atemp
= input_wait_mask
;
4450 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4451 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4453 #ifdef NON_BLOCKING_CONNECT
4454 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4458 (SELECT_TYPE
*)0, &timeout
)
4461 /* It's okay for us to do this and then continue with
4462 the loop, since timeout has already been zeroed out. */
4463 clear_waiting_for_input ();
4464 status_notify (NULL
);
4465 if (do_display
) redisplay_preserve_echo_area (13);
4469 /* Don't wait for output from a non-running process. Just
4470 read whatever data has already been received. */
4471 if (wait_proc
&& wait_proc
->raw_status_new
)
4472 update_status (wait_proc
);
4474 && ! EQ (wait_proc
->status
, Qrun
)
4475 && ! EQ (wait_proc
->status
, Qconnect
))
4477 int nread
, total_nread
= 0;
4479 clear_waiting_for_input ();
4480 XSETPROCESS (proc
, wait_proc
);
4482 /* Read data from the process, until we exhaust it. */
4483 while (wait_proc
->infd
>= 0)
4485 nread
= read_process_output (proc
, wait_proc
->infd
);
4492 total_nread
+= nread
;
4496 else if (nread
== -1 && EIO
== errno
)
4500 else if (nread
== -1 && EAGAIN
== errno
)
4504 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4508 if (total_nread
> 0 && do_display
)
4509 redisplay_preserve_echo_area (10);
4514 /* Wait till there is something to do */
4516 if (wait_proc
&& just_wait_proc
)
4518 if (wait_proc
->infd
< 0) /* Terminated */
4520 FD_SET (wait_proc
->infd
, &Available
);
4524 else if (!NILP (wait_for_cell
))
4526 Available
= non_process_wait_mask
;
4533 Available
= non_keyboard_wait_mask
;
4535 Available
= input_wait_mask
;
4536 Writeok
= write_mask
;
4537 #ifdef SELECT_CANT_DO_WRITE_MASK
4542 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4545 /* If frame size has changed or the window is newly mapped,
4546 redisplay now, before we start to wait. There is a race
4547 condition here; if a SIGIO arrives between now and the select
4548 and indicates that a frame is trashed, the select may block
4549 displaying a trashed screen. */
4550 if (frame_garbaged
&& do_display
)
4552 clear_waiting_for_input ();
4553 redisplay_preserve_echo_area (11);
4555 set_waiting_for_input (&timeout
);
4558 /* Skip the `select' call if input is available and we're
4559 waiting for keyboard input or a cell change (which can be
4560 triggered by processing X events). In the latter case, set
4561 nfds to 1 to avoid breaking the loop. */
4563 if ((read_kbd
|| !NILP (wait_for_cell
))
4564 && detect_input_pending ())
4566 nfds
= read_kbd
? 0 : 1;
4573 #ifdef ADAPTIVE_READ_BUFFERING
4574 /* Set the timeout for adaptive read buffering if any
4575 process has non-zero read_output_skip and non-zero
4576 read_output_delay, and we are not reading output for a
4577 specific wait_channel. It is not executed if
4578 Vprocess_adaptive_read_buffering is nil. */
4579 if (process_output_skip
&& check_delay
> 0)
4581 int usecs
= EMACS_USECS (timeout
);
4582 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4583 usecs
= READ_OUTPUT_DELAY_MAX
;
4584 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4586 proc
= chan_process
[channel
];
4589 /* Find minimum non-zero read_output_delay among the
4590 processes with non-zero read_output_skip. */
4591 if (XPROCESS (proc
)->read_output_delay
> 0)
4594 if (!XPROCESS (proc
)->read_output_skip
)
4596 FD_CLR (channel
, &Available
);
4597 XPROCESS (proc
)->read_output_skip
= 0;
4598 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4599 usecs
= XPROCESS (proc
)->read_output_delay
;
4602 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4603 process_output_skip
= 0;
4606 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
4608 #elif defined (HAVE_NS)
4613 (max (max_process_desc
, max_input_desc
) + 1,
4615 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4616 (SELECT_TYPE
*)0, &timeout
);
4619 /* GnuTLS buffers data internally. In lowat mode it leaves
4620 some data in the TCP buffers so that select works, but
4621 with custom pull/push functions we need to check if some
4622 data is available in the buffers manually. */
4624 wait_proc
&& wait_proc
->gnutls_p
/* Check for valid process. */
4625 /* Do we have pending data? */
4626 && emacs_gnutls_record_check_pending (wait_proc
->gnutls_state
) > 0)
4629 /* Set to Available. */
4630 FD_SET (wait_proc
->infd
, &Available
);
4637 /* Make C-g and alarm signals set flags again */
4638 clear_waiting_for_input ();
4640 /* If we woke up due to SIGWINCH, actually change size now. */
4641 do_pending_window_change (0);
4643 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4644 /* We wanted the full specified time, so return now. */
4648 if (xerrno
== EINTR
)
4650 else if (xerrno
== EBADF
)
4653 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4654 the child's closure of the pts gives the parent a SIGHUP, and
4655 the ptc file descriptor is automatically closed,
4656 yielding EBADF here or at select() call above.
4657 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4658 in m/ibmrt-aix.h), and here we just ignore the select error.
4659 Cleanup occurs c/o status_notify after SIGCLD. */
4660 no_avail
= 1; /* Cannot depend on values returned */
4666 error ("select error: %s", emacs_strerror (xerrno
));
4671 FD_ZERO (&Available
);
4675 #if 0 /* When polling is used, interrupt_input is 0,
4676 so get_input_pending should read the input.
4677 So this should not be needed. */
4678 /* If we are using polling for input,
4679 and we see input available, make it get read now.
4680 Otherwise it might not actually get read for a second.
4681 And on hpux, since we turn off polling in wait_reading_process_output,
4682 it might never get read at all if we don't spend much time
4683 outside of wait_reading_process_output. */
4684 if (read_kbd
&& interrupt_input
4685 && keyboard_bit_set (&Available
)
4686 && input_polling_used ())
4687 kill (getpid (), SIGALRM
);
4690 /* Check for keyboard input */
4691 /* If there is any, return immediately
4692 to give it higher priority than subprocesses */
4696 int old_timers_run
= timers_run
;
4697 struct buffer
*old_buffer
= current_buffer
;
4698 Lisp_Object old_window
= selected_window
;
4701 if (detect_input_pending_run_timers (do_display
))
4703 swallow_events (do_display
);
4704 if (detect_input_pending_run_timers (do_display
))
4708 /* If a timer has run, this might have changed buffers
4709 an alike. Make read_key_sequence aware of that. */
4710 if (timers_run
!= old_timers_run
4711 && waiting_for_user_input_p
== -1
4712 && (old_buffer
!= current_buffer
4713 || !EQ (old_window
, selected_window
)))
4714 record_asynch_buffer_change ();
4720 /* If there is unread keyboard input, also return. */
4722 && requeued_events_pending_p ())
4725 /* If we are not checking for keyboard input now,
4726 do process events (but don't run any timers).
4727 This is so that X events will be processed.
4728 Otherwise they may have to wait until polling takes place.
4729 That would causes delays in pasting selections, for example.
4731 (We used to do this only if wait_for_cell.) */
4732 if (read_kbd
== 0 && detect_input_pending ())
4734 swallow_events (do_display
);
4735 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4736 if (detect_input_pending ())
4741 /* Exit now if the cell we're waiting for became non-nil. */
4742 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4746 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4747 go read it. This can happen with X on BSD after logging out.
4748 In that case, there really is no input and no SIGIO,
4749 but select says there is input. */
4751 if (read_kbd
&& interrupt_input
4752 && keyboard_bit_set (&Available
) && ! noninteractive
)
4753 kill (getpid (), SIGIO
);
4757 got_some_input
|= nfds
> 0;
4759 /* If checking input just got us a size-change event from X,
4760 obey it now if we should. */
4761 if (read_kbd
|| ! NILP (wait_for_cell
))
4762 do_pending_window_change (0);
4764 /* Check for data from a process. */
4765 if (no_avail
|| nfds
== 0)
4768 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4770 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4771 if (FD_ISSET (channel
, &Available
)
4773 && (d
->condition
& FOR_READ
) != 0)
4774 d
->func (channel
, d
->data
, 1);
4775 if (FD_ISSET (channel
, &write_mask
)
4777 && (d
->condition
& FOR_WRITE
) != 0)
4778 d
->func (channel
, d
->data
, 0);
4781 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4783 if (FD_ISSET (channel
, &Available
)
4784 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4785 && !FD_ISSET (channel
, &non_process_wait_mask
))
4789 /* If waiting for this channel, arrange to return as
4790 soon as no more input to be processed. No more
4792 if (wait_channel
== channel
)
4798 proc
= chan_process
[channel
];
4802 /* If this is a server stream socket, accept connection. */
4803 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4805 server_accept_connection (proc
, channel
);
4809 /* Read data from the process, starting with our
4810 buffered-ahead character if we have one. */
4812 nread
= read_process_output (proc
, channel
);
4815 /* Since read_process_output can run a filter,
4816 which can call accept-process-output,
4817 don't try to read from any other processes
4818 before doing the select again. */
4819 FD_ZERO (&Available
);
4822 redisplay_preserve_echo_area (12);
4825 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4828 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4829 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4831 else if (nread
== -1 && errno
== EAGAIN
)
4835 else if (nread
== -1 && errno
== EAGAIN
)
4837 /* Note that we cannot distinguish between no input
4838 available now and a closed pipe.
4839 With luck, a closed pipe will be accompanied by
4840 subprocess termination and SIGCHLD. */
4841 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4843 #endif /* O_NDELAY */
4844 #endif /* O_NONBLOCK */
4846 /* On some OSs with ptys, when the process on one end of
4847 a pty exits, the other end gets an error reading with
4848 errno = EIO instead of getting an EOF (0 bytes read).
4849 Therefore, if we get an error reading and errno =
4850 EIO, just continue, because the child process has
4851 exited and should clean itself up soon (e.g. when we
4854 However, it has been known to happen that the SIGCHLD
4855 got lost. So raise the signal again just in case.
4857 else if (nread
== -1 && errno
== EIO
)
4859 /* Clear the descriptor now, so we only raise the
4860 signal once. Don't do this if `process' is only
4862 if (XPROCESS (proc
)->pid
!= -2)
4864 FD_CLR (channel
, &input_wait_mask
);
4865 FD_CLR (channel
, &non_keyboard_wait_mask
);
4867 kill (getpid (), SIGCHLD
);
4870 #endif /* HAVE_PTYS */
4871 /* If we can detect process termination, don't consider the process
4872 gone just because its pipe is closed. */
4874 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4879 /* Preserve status of processes already terminated. */
4880 XPROCESS (proc
)->tick
= ++process_tick
;
4881 deactivate_process (proc
);
4882 if (XPROCESS (proc
)->raw_status_new
)
4883 update_status (XPROCESS (proc
));
4884 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4885 XPROCESS (proc
)->status
4886 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4889 #ifdef NON_BLOCKING_CONNECT
4890 if (FD_ISSET (channel
, &Writeok
)
4891 && FD_ISSET (channel
, &connect_wait_mask
))
4893 struct Lisp_Process
*p
;
4895 FD_CLR (channel
, &connect_wait_mask
);
4896 FD_CLR (channel
, &write_mask
);
4897 if (--num_pending_connects
< 0)
4900 proc
= chan_process
[channel
];
4904 p
= XPROCESS (proc
);
4907 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4908 So only use it on systems where it is known to work. */
4910 socklen_t xlen
= sizeof (xerrno
);
4911 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4916 struct sockaddr pname
;
4917 int pnamelen
= sizeof (pname
);
4919 /* If connection failed, getpeername will fail. */
4921 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4923 /* Obtain connect failure code through error slippage. */
4926 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4933 p
->tick
= ++process_tick
;
4934 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4935 deactivate_process (proc
);
4940 /* Execute the sentinel here. If we had relied on
4941 status_notify to do it later, it will read input
4942 from the process before calling the sentinel. */
4943 exec_sentinel (proc
, build_string ("open\n"));
4944 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4946 FD_SET (p
->infd
, &input_wait_mask
);
4947 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4951 #endif /* NON_BLOCKING_CONNECT */
4952 } /* end for each file descriptor */
4953 } /* end while exit conditions not met */
4955 unbind_to (count
, Qnil
);
4957 /* If calling from keyboard input, do not quit
4958 since we want to return C-g as an input character.
4959 Otherwise, do pending quit if requested. */
4962 /* Prevent input_pending from remaining set if we quit. */
4963 clear_input_pending ();
4967 return got_some_input
;
4970 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4973 read_process_output_call (Lisp_Object fun_and_args
)
4975 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4979 read_process_output_error_handler (Lisp_Object error_val
)
4981 cmd_error_internal (error_val
, "error in process filter: ");
4983 update_echo_area ();
4984 Fsleep_for (make_number (2), Qnil
);
4988 /* Read pending output from the process channel,
4989 starting with our buffered-ahead character if we have one.
4990 Yield number of decoded characters read.
4992 This function reads at most 4096 characters.
4993 If you want to read all available subprocess output,
4994 you must call it repeatedly until it returns zero.
4996 The characters read are decoded according to PROC's coding-system
5000 read_process_output (Lisp_Object proc
, register int channel
)
5002 register ssize_t nbytes
;
5004 register Lisp_Object outstream
;
5005 register struct Lisp_Process
*p
= XPROCESS (proc
);
5006 register EMACS_INT opoint
;
5007 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5008 int carryover
= p
->decoding_carryover
;
5010 int count
= SPECPDL_INDEX ();
5011 Lisp_Object odeactivate
;
5013 chars
= (char *) alloca (carryover
+ readmax
);
5015 /* See the comment above. */
5016 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5018 #ifdef DATAGRAM_SOCKETS
5019 /* We have a working select, so proc_buffered_char is always -1. */
5020 if (DATAGRAM_CHAN_P (channel
))
5022 socklen_t len
= datagram_address
[channel
].len
;
5023 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5024 0, datagram_address
[channel
].sa
, &len
);
5029 int buffered
= 0 <= proc_buffered_char
[channel
];
5032 chars
[carryover
] = proc_buffered_char
[channel
];
5033 proc_buffered_char
[channel
] = -1;
5036 if (XPROCESS (proc
)->gnutls_p
)
5037 nbytes
= emacs_gnutls_read (XPROCESS (proc
),
5038 chars
+ carryover
+ buffered
,
5039 readmax
- buffered
);
5042 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5043 readmax
- buffered
);
5044 #ifdef ADAPTIVE_READ_BUFFERING
5045 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5047 int delay
= p
->read_output_delay
;
5050 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5053 process_output_delay_count
++;
5054 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5057 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5059 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5061 process_output_delay_count
--;
5063 p
->read_output_delay
= delay
;
5066 p
->read_output_skip
= 1;
5067 process_output_skip
= 1;
5072 nbytes
+= buffered
&& nbytes
<= 0;
5075 p
->decoding_carryover
= 0;
5077 /* At this point, NBYTES holds number of bytes just received
5078 (including the one in proc_buffered_char[channel]). */
5081 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5083 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5086 /* Now set NBYTES how many bytes we must decode. */
5087 nbytes
+= carryover
;
5089 odeactivate
= Vdeactivate_mark
;
5090 /* There's no good reason to let process filters change the current
5091 buffer, and many callers of accept-process-output, sit-for, and
5092 friends don't expect current-buffer to be changed from under them. */
5093 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5095 /* Read and dispose of the process output. */
5096 outstream
= p
->filter
;
5097 if (!NILP (outstream
))
5100 int outer_running_asynch_code
= running_asynch_code
;
5101 int waiting
= waiting_for_user_input_p
;
5103 /* No need to gcpro these, because all we do with them later
5104 is test them for EQness, and none of them should be a string. */
5106 Lisp_Object obuffer
, okeymap
;
5107 XSETBUFFER (obuffer
, current_buffer
);
5108 okeymap
= BVAR (current_buffer
, keymap
);
5111 /* We inhibit quit here instead of just catching it so that
5112 hitting ^G when a filter happens to be running won't screw
5114 specbind (Qinhibit_quit
, Qt
);
5115 specbind (Qlast_nonmenu_event
, Qt
);
5117 /* In case we get recursively called,
5118 and we already saved the match data nonrecursively,
5119 save the same match data in safely recursive fashion. */
5120 if (outer_running_asynch_code
)
5123 /* Don't clobber the CURRENT match data, either! */
5124 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5125 restore_search_regs ();
5126 record_unwind_save_match_data ();
5127 Fset_match_data (tem
, Qt
);
5130 /* For speed, if a search happens within this code,
5131 save the match data in a special nonrecursive fashion. */
5132 running_asynch_code
= 1;
5134 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5135 text
= coding
->dst_object
;
5136 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5137 /* A new coding system might be found. */
5138 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5140 p
->decode_coding_system
= Vlast_coding_system_used
;
5142 /* Don't call setup_coding_system for
5143 proc_decode_coding_system[channel] here. It is done in
5144 detect_coding called via decode_coding above. */
5146 /* If a coding system for encoding is not yet decided, we set
5147 it as the same as coding-system for decoding.
5149 But, before doing that we must check if
5150 proc_encode_coding_system[p->outfd] surely points to a
5151 valid memory because p->outfd will be changed once EOF is
5152 sent to the process. */
5153 if (NILP (p
->encode_coding_system
)
5154 && proc_encode_coding_system
[p
->outfd
])
5156 p
->encode_coding_system
5157 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5158 setup_coding_system (p
->encode_coding_system
,
5159 proc_encode_coding_system
[p
->outfd
]);
5163 if (coding
->carryover_bytes
> 0)
5165 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5166 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5167 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5168 coding
->carryover_bytes
);
5169 p
->decoding_carryover
= coding
->carryover_bytes
;
5171 if (SBYTES (text
) > 0)
5172 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5173 sometimes it's simply wrong to wrap (e.g. when called from
5174 accept-process-output). */
5175 internal_condition_case_1 (read_process_output_call
,
5177 Fcons (proc
, Fcons (text
, Qnil
))),
5178 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5179 read_process_output_error_handler
);
5181 /* If we saved the match data nonrecursively, restore it now. */
5182 restore_search_regs ();
5183 running_asynch_code
= outer_running_asynch_code
;
5185 /* Restore waiting_for_user_input_p as it was
5186 when we were called, in case the filter clobbered it. */
5187 waiting_for_user_input_p
= waiting
;
5189 #if 0 /* Call record_asynch_buffer_change unconditionally,
5190 because we might have changed minor modes or other things
5191 that affect key bindings. */
5192 if (! EQ (Fcurrent_buffer (), obuffer
)
5193 || ! EQ (current_buffer
->keymap
, okeymap
))
5195 /* But do it only if the caller is actually going to read events.
5196 Otherwise there's no need to make him wake up, and it could
5197 cause trouble (for example it would make sit_for return). */
5198 if (waiting_for_user_input_p
== -1)
5199 record_asynch_buffer_change ();
5202 /* If no filter, write into buffer if it isn't dead. */
5203 else if (!NILP (p
->buffer
) && !NILP (BVAR (XBUFFER (p
->buffer
), name
)))
5205 Lisp_Object old_read_only
;
5206 EMACS_INT old_begv
, old_zv
;
5207 EMACS_INT old_begv_byte
, old_zv_byte
;
5208 EMACS_INT before
, before_byte
;
5209 EMACS_INT opoint_byte
;
5213 Fset_buffer (p
->buffer
);
5215 opoint_byte
= PT_BYTE
;
5216 old_read_only
= BVAR (current_buffer
, read_only
);
5219 old_begv_byte
= BEGV_BYTE
;
5220 old_zv_byte
= ZV_BYTE
;
5222 BVAR (current_buffer
, read_only
) = Qnil
;
5224 /* Insert new output into buffer
5225 at the current end-of-output marker,
5226 thus preserving logical ordering of input and output. */
5227 if (XMARKER (p
->mark
)->buffer
)
5228 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5229 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5232 SET_PT_BOTH (ZV
, ZV_BYTE
);
5234 before_byte
= PT_BYTE
;
5236 /* If the output marker is outside of the visible region, save
5237 the restriction and widen. */
5238 if (! (BEGV
<= PT
&& PT
<= ZV
))
5241 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5242 text
= coding
->dst_object
;
5243 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5244 /* A new coding system might be found. See the comment in the
5245 similar code in the previous `if' block. */
5246 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5248 p
->decode_coding_system
= Vlast_coding_system_used
;
5249 if (NILP (p
->encode_coding_system
)
5250 && proc_encode_coding_system
[p
->outfd
])
5252 p
->encode_coding_system
5253 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5254 setup_coding_system (p
->encode_coding_system
,
5255 proc_encode_coding_system
[p
->outfd
]);
5258 if (coding
->carryover_bytes
> 0)
5260 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5261 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5262 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5263 coding
->carryover_bytes
);
5264 p
->decoding_carryover
= coding
->carryover_bytes
;
5266 /* Adjust the multibyteness of TEXT to that of the buffer. */
5267 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5268 != ! STRING_MULTIBYTE (text
))
5269 text
= (STRING_MULTIBYTE (text
)
5270 ? Fstring_as_unibyte (text
)
5271 : Fstring_to_multibyte (text
));
5272 /* Insert before markers in case we are inserting where
5273 the buffer's mark is, and the user's next command is Meta-y. */
5274 insert_from_string_before_markers (text
, 0, 0,
5275 SCHARS (text
), SBYTES (text
), 0);
5277 /* Make sure the process marker's position is valid when the
5278 process buffer is changed in the signal_after_change above.
5279 W3 is known to do that. */
5280 if (BUFFERP (p
->buffer
)
5281 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5282 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5284 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5286 update_mode_lines
++;
5288 /* Make sure opoint and the old restrictions
5289 float ahead of any new text just as point would. */
5290 if (opoint
>= before
)
5292 opoint
+= PT
- before
;
5293 opoint_byte
+= PT_BYTE
- before_byte
;
5295 if (old_begv
> before
)
5297 old_begv
+= PT
- before
;
5298 old_begv_byte
+= PT_BYTE
- before_byte
;
5300 if (old_zv
>= before
)
5302 old_zv
+= PT
- before
;
5303 old_zv_byte
+= PT_BYTE
- before_byte
;
5306 /* If the restriction isn't what it should be, set it. */
5307 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5308 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5311 BVAR (current_buffer
, read_only
) = old_read_only
;
5312 SET_PT_BOTH (opoint
, opoint_byte
);
5314 /* Handling the process output should not deactivate the mark. */
5315 Vdeactivate_mark
= odeactivate
;
5317 unbind_to (count
, Qnil
);
5321 /* Sending data to subprocess */
5323 static jmp_buf send_process_frame
;
5324 static Lisp_Object process_sent_to
;
5326 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
5327 static void send_process_trap (int) NO_RETURN
;
5331 send_process_trap (int ignore
)
5333 SIGNAL_THREAD_CHECK (SIGPIPE
);
5334 sigunblock (sigmask (SIGPIPE
));
5335 longjmp (send_process_frame
, 1);
5338 /* Send some data to process PROC.
5339 BUF is the beginning of the data; LEN is the number of characters.
5340 OBJECT is the Lisp object that the data comes from. If OBJECT is
5341 nil or t, it means that the data comes from C string.
5343 If OBJECT is not nil, the data is encoded by PROC's coding-system
5344 for encoding before it is sent.
5346 This function can evaluate Lisp code and can garbage collect. */
5349 send_process (volatile Lisp_Object proc
, const char *volatile buf
,
5350 volatile EMACS_INT len
, volatile Lisp_Object object
)
5352 /* Use volatile to protect variables from being clobbered by longjmp. */
5353 struct Lisp_Process
*p
= XPROCESS (proc
);
5355 struct coding_system
*coding
;
5356 struct gcpro gcpro1
;
5357 void (*volatile old_sigpipe
) (int);
5361 if (p
->raw_status_new
)
5363 if (! EQ (p
->status
, Qrun
))
5364 error ("Process %s not running", SDATA (p
->name
));
5366 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5368 coding
= proc_encode_coding_system
[p
->outfd
];
5369 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5371 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5372 || (BUFFERP (object
)
5373 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5376 p
->encode_coding_system
5377 = complement_process_encoding_system (p
->encode_coding_system
);
5378 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5380 /* The coding system for encoding was changed to raw-text
5381 because we sent a unibyte text previously. Now we are
5382 sending a multibyte text, thus we must encode it by the
5383 original coding system specified for the current process.
5385 Another reason we comming here is that the coding system
5386 was just complemented and new one was returned by
5387 complement_process_encoding_system. */
5388 setup_coding_system (p
->encode_coding_system
, coding
);
5389 Vlast_coding_system_used
= p
->encode_coding_system
;
5391 coding
->src_multibyte
= 1;
5395 /* For sending a unibyte text, character code conversion should
5396 not take place but EOL conversion should. So, setup raw-text
5397 or one of the subsidiary if we have not yet done it. */
5398 if (CODING_REQUIRE_ENCODING (coding
))
5400 if (CODING_REQUIRE_FLUSHING (coding
))
5402 /* But, before changing the coding, we must flush out data. */
5403 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5404 send_process (proc
, "", 0, Qt
);
5405 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5407 setup_coding_system (raw_text_coding_system
5408 (Vlast_coding_system_used
),
5410 coding
->src_multibyte
= 0;
5413 coding
->dst_multibyte
= 0;
5415 if (CODING_REQUIRE_ENCODING (coding
))
5417 coding
->dst_object
= Qt
;
5418 if (BUFFERP (object
))
5420 EMACS_INT from_byte
, from
, to
;
5421 EMACS_INT save_pt
, save_pt_byte
;
5422 struct buffer
*cur
= current_buffer
;
5424 set_buffer_internal (XBUFFER (object
));
5425 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5427 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5428 from
= BYTE_TO_CHAR (from_byte
);
5429 to
= BYTE_TO_CHAR (from_byte
+ len
);
5430 TEMP_SET_PT_BOTH (from
, from_byte
);
5431 encode_coding_object (coding
, object
, from
, from_byte
,
5432 to
, from_byte
+ len
, Qt
);
5433 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5434 set_buffer_internal (cur
);
5436 else if (STRINGP (object
))
5438 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5439 SBYTES (object
), Qt
);
5443 coding
->dst_object
= make_unibyte_string (buf
, len
);
5444 coding
->produced
= len
;
5447 len
= coding
->produced
;
5448 object
= coding
->dst_object
;
5449 buf
= SSDATA (object
);
5452 if (pty_max_bytes
== 0)
5454 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5455 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5456 if (pty_max_bytes
< 0)
5457 pty_max_bytes
= 250;
5459 pty_max_bytes
= 250;
5461 /* Deduct one, to leave space for the eof. */
5465 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5466 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5467 when returning with longjmp despite being declared volatile. */
5468 if (!setjmp (send_process_frame
))
5470 p
= XPROCESS (proc
); /* Repair any setjmp clobbering. */
5472 process_sent_to
= proc
;
5475 EMACS_INT
this = len
;
5477 /* Send this batch, using one or more write calls. */
5480 EMACS_INT written
= 0;
5481 int outfd
= p
->outfd
;
5482 old_sigpipe
= (void (*) (int)) signal (SIGPIPE
, send_process_trap
);
5483 #ifdef DATAGRAM_SOCKETS
5484 if (DATAGRAM_CHAN_P (outfd
))
5486 rv
= sendto (outfd
, buf
, this,
5487 0, datagram_address
[outfd
].sa
,
5488 datagram_address
[outfd
].len
);
5491 else if (errno
== EMSGSIZE
)
5493 signal (SIGPIPE
, old_sigpipe
);
5494 report_file_error ("sending datagram",
5495 Fcons (proc
, Qnil
));
5502 if (XPROCESS (proc
)->gnutls_p
)
5503 written
= emacs_gnutls_write (XPROCESS (proc
),
5507 written
= emacs_write (outfd
, buf
, this);
5508 rv
= (written
? 0 : -1);
5509 #ifdef ADAPTIVE_READ_BUFFERING
5510 if (p
->read_output_delay
> 0
5511 && p
->adaptive_read_buffering
== 1)
5513 p
->read_output_delay
= 0;
5514 process_output_delay_count
--;
5515 p
->read_output_skip
= 0;
5519 signal (SIGPIPE
, old_sigpipe
);
5525 || errno
== EWOULDBLOCK
5531 /* Buffer is full. Wait, accepting input;
5532 that may allow the program
5533 to finish doing output and read more. */
5535 EMACS_INT offset
= 0;
5537 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5538 /* A gross hack to work around a bug in FreeBSD.
5539 In the following sequence, read(2) returns
5543 write(2) 954 bytes, get EAGAIN
5544 read(2) 1024 bytes in process_read_output
5545 read(2) 11 bytes in process_read_output
5547 That is, read(2) returns more bytes than have
5548 ever been written successfully. The 1033 bytes
5549 read are the 1022 bytes written successfully
5550 after processing (for example with CRs added if
5551 the terminal is set up that way which it is
5552 here). The same bytes will be seen again in a
5553 later read(2), without the CRs. */
5555 if (errno
== EAGAIN
)
5558 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5560 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5562 /* Running filters might relocate buffers or strings.
5563 Arrange to relocate BUF. */
5564 if (BUFFERP (object
))
5565 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
),
5566 (unsigned char *) buf
);
5567 else if (STRINGP (object
))
5568 offset
= buf
- SSDATA (object
);
5570 #ifdef EMACS_HAS_USECS
5571 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5573 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5576 if (BUFFERP (object
))
5577 buf
= (char *) BUF_BYTE_ADDRESS (XBUFFER (object
),
5579 else if (STRINGP (object
))
5580 buf
= offset
+ SSDATA (object
);
5583 /* This is a real error. */
5584 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5594 signal (SIGPIPE
, old_sigpipe
);
5595 proc
= process_sent_to
;
5596 p
= XPROCESS (proc
);
5597 p
->raw_status_new
= 0;
5598 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5599 p
->tick
= ++process_tick
;
5600 deactivate_process (proc
);
5601 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5607 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5609 doc
: /* Send current contents of region as input to PROCESS.
5610 PROCESS may be a process, a buffer, the name of a process or buffer, or
5611 nil, indicating the current buffer's process.
5612 Called from program, takes three arguments, PROCESS, START and END.
5613 If the region is more than 500 characters long,
5614 it is sent in several bunches. This may happen even for shorter regions.
5615 Output from processes can arrive in between bunches. */)
5616 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5619 EMACS_INT start1
, end1
;
5621 proc
= get_process (process
);
5622 validate_region (&start
, &end
);
5624 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5625 move_gap (XINT (start
));
5627 start1
= CHAR_TO_BYTE (XINT (start
));
5628 end1
= CHAR_TO_BYTE (XINT (end
));
5629 send_process (proc
, (char *) BYTE_POS_ADDR (start1
), end1
- start1
,
5630 Fcurrent_buffer ());
5635 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5637 doc
: /* Send PROCESS the contents of STRING as input.
5638 PROCESS may be a process, a buffer, the name of a process or buffer, or
5639 nil, indicating the current buffer's process.
5640 If STRING is more than 500 characters long,
5641 it is sent in several bunches. This may happen even for shorter strings.
5642 Output from processes can arrive in between bunches. */)
5643 (Lisp_Object process
, Lisp_Object string
)
5646 CHECK_STRING (string
);
5647 proc
= get_process (process
);
5648 send_process (proc
, SSDATA (string
),
5649 SBYTES (string
), string
);
5653 /* Return the foreground process group for the tty/pty that
5654 the process P uses. */
5656 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5661 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5664 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5665 master side. Try the slave side. */
5666 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5670 ioctl (fd
, TIOCGPGRP
, &gid
);
5674 #endif /* defined (TIOCGPGRP ) */
5679 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5680 Sprocess_running_child_p
, 0, 1, 0,
5681 doc
: /* Return t if PROCESS has given the terminal to a child.
5682 If the operating system does not make it possible to find out,
5683 return t unconditionally. */)
5684 (Lisp_Object process
)
5686 /* Initialize in case ioctl doesn't exist or gives an error,
5687 in a way that will cause returning t. */
5690 struct Lisp_Process
*p
;
5692 proc
= get_process (process
);
5693 p
= XPROCESS (proc
);
5695 if (!EQ (p
->type
, Qreal
))
5696 error ("Process %s is not a subprocess",
5699 error ("Process %s is not active",
5702 gid
= emacs_get_tty_pgrp (p
);
5709 /* send a signal number SIGNO to PROCESS.
5710 If CURRENT_GROUP is t, that means send to the process group
5711 that currently owns the terminal being used to communicate with PROCESS.
5712 This is used for various commands in shell mode.
5713 If CURRENT_GROUP is lambda, that means send to the process group
5714 that currently owns the terminal, but only if it is NOT the shell itself.
5716 If NOMSG is zero, insert signal-announcements into process's buffers
5719 If we can, we try to signal PROCESS by sending control characters
5720 down the pty. This allows us to signal inferiors who have changed
5721 their uid, for which killpg would return an EPERM error. */
5724 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5728 register struct Lisp_Process
*p
;
5732 proc
= get_process (process
);
5733 p
= XPROCESS (proc
);
5735 if (!EQ (p
->type
, Qreal
))
5736 error ("Process %s is not a subprocess",
5739 error ("Process %s is not active",
5743 current_group
= Qnil
;
5745 /* If we are using pgrps, get a pgrp number and make it negative. */
5746 if (NILP (current_group
))
5747 /* Send the signal to the shell's process group. */
5751 #ifdef SIGNALS_VIA_CHARACTERS
5752 /* If possible, send signals to the entire pgrp
5753 by sending an input character to it. */
5756 cc_t
*sig_char
= NULL
;
5758 tcgetattr (p
->infd
, &t
);
5763 sig_char
= &t
.c_cc
[VINTR
];
5767 sig_char
= &t
.c_cc
[VQUIT
];
5771 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5772 sig_char
= &t
.c_cc
[VSWTCH
];
5774 sig_char
= &t
.c_cc
[VSUSP
];
5779 if (sig_char
&& *sig_char
!= CDISABLE
)
5781 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5784 /* If we can't send the signal with a character,
5785 fall through and send it another way. */
5787 /* The code above may fall through if it can't
5788 handle the signal. */
5789 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5792 /* Get the current pgrp using the tty itself, if we have that.
5793 Otherwise, use the pty to get the pgrp.
5794 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5795 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5796 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5797 His patch indicates that if TIOCGPGRP returns an error, then
5798 we should just assume that p->pid is also the process group id. */
5800 gid
= emacs_get_tty_pgrp (p
);
5803 /* If we can't get the information, assume
5804 the shell owns the tty. */
5807 /* It is not clear whether anything really can set GID to -1.
5808 Perhaps on some system one of those ioctls can or could do so.
5809 Or perhaps this is vestigial. */
5812 #else /* ! defined (TIOCGPGRP ) */
5813 /* Can't select pgrps on this system, so we know that
5814 the child itself heads the pgrp. */
5816 #endif /* ! defined (TIOCGPGRP ) */
5818 /* If current_group is lambda, and the shell owns the terminal,
5819 don't send any signal. */
5820 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5828 p
->raw_status_new
= 0;
5830 p
->tick
= ++process_tick
;
5833 status_notify (NULL
);
5834 redisplay_preserve_echo_area (13);
5837 #endif /* ! defined (SIGCONT) */
5841 flush_pending_output (p
->infd
);
5845 /* If we don't have process groups, send the signal to the immediate
5846 subprocess. That isn't really right, but it's better than any
5847 obvious alternative. */
5850 kill (p
->pid
, signo
);
5854 /* gid may be a pid, or minus a pgrp's number */
5856 if (!NILP (current_group
))
5858 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5859 EMACS_KILLPG (gid
, signo
);
5866 #else /* ! defined (TIOCSIGSEND) */
5867 EMACS_KILLPG (gid
, signo
);
5868 #endif /* ! defined (TIOCSIGSEND) */
5871 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5872 doc
: /* Interrupt process PROCESS.
5873 PROCESS may be a process, a buffer, or the name of a process or buffer.
5874 No arg or nil means current buffer's process.
5875 Second arg CURRENT-GROUP non-nil means send signal to
5876 the current process-group of the process's controlling terminal
5877 rather than to the process's own process group.
5878 If the process is a shell, this means interrupt current subjob
5879 rather than the shell.
5881 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5882 don't send the signal. */)
5883 (Lisp_Object process
, Lisp_Object current_group
)
5885 process_send_signal (process
, SIGINT
, current_group
, 0);
5889 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5890 doc
: /* Kill process PROCESS. May be process or name of one.
5891 See function `interrupt-process' for more details on usage. */)
5892 (Lisp_Object process
, Lisp_Object current_group
)
5894 process_send_signal (process
, SIGKILL
, current_group
, 0);
5898 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5899 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5900 See function `interrupt-process' for more details on usage. */)
5901 (Lisp_Object process
, Lisp_Object current_group
)
5903 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5907 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5908 doc
: /* Stop process PROCESS. May be process or name of one.
5909 See function `interrupt-process' for more details on usage.
5910 If PROCESS is a network or serial process, inhibit handling of incoming
5912 (Lisp_Object process
, Lisp_Object current_group
)
5914 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5916 struct Lisp_Process
*p
;
5918 p
= XPROCESS (process
);
5919 if (NILP (p
->command
)
5922 FD_CLR (p
->infd
, &input_wait_mask
);
5923 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5929 error ("No SIGTSTP support");
5931 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5936 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5937 doc
: /* Continue process PROCESS. May be process or name of one.
5938 See function `interrupt-process' for more details on usage.
5939 If PROCESS is a network or serial process, resume handling of incoming
5941 (Lisp_Object process
, Lisp_Object current_group
)
5943 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5945 struct Lisp_Process
*p
;
5947 p
= XPROCESS (process
);
5948 if (EQ (p
->command
, Qt
)
5950 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5952 FD_SET (p
->infd
, &input_wait_mask
);
5953 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5955 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5956 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5957 #else /* not WINDOWSNT */
5958 tcflush (p
->infd
, TCIFLUSH
);
5959 #endif /* not WINDOWSNT */
5965 process_send_signal (process
, SIGCONT
, current_group
, 0);
5967 error ("No SIGCONT support");
5972 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5973 2, 2, "sProcess (name or number): \nnSignal code: ",
5974 doc
: /* Send PROCESS the signal with code SIGCODE.
5975 PROCESS may also be a number specifying the process id of the
5976 process to signal; in this case, the process need not be a child of
5978 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5979 (Lisp_Object process
, Lisp_Object sigcode
)
5983 if (INTEGERP (process
))
5985 pid
= XINT (process
);
5989 if (FLOATP (process
))
5991 pid
= (pid_t
) XFLOAT_DATA (process
);
5995 if (STRINGP (process
))
5998 if (tem
= Fget_process (process
), NILP (tem
))
6000 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6007 process
= get_process (process
);
6012 CHECK_PROCESS (process
);
6013 pid
= XPROCESS (process
)->pid
;
6015 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6019 #define parse_signal(NAME, VALUE) \
6020 else if (!xstrcasecmp (name, NAME)) \
6021 XSETINT (sigcode, VALUE)
6023 if (INTEGERP (sigcode
))
6029 CHECK_SYMBOL (sigcode
);
6030 name
= SSDATA (SYMBOL_NAME (sigcode
));
6032 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6038 parse_signal ("usr1", SIGUSR1
);
6041 parse_signal ("usr2", SIGUSR2
);
6044 parse_signal ("term", SIGTERM
);
6047 parse_signal ("hup", SIGHUP
);
6050 parse_signal ("int", SIGINT
);
6053 parse_signal ("quit", SIGQUIT
);
6056 parse_signal ("ill", SIGILL
);
6059 parse_signal ("abrt", SIGABRT
);
6062 parse_signal ("emt", SIGEMT
);
6065 parse_signal ("kill", SIGKILL
);
6068 parse_signal ("fpe", SIGFPE
);
6071 parse_signal ("bus", SIGBUS
);
6074 parse_signal ("segv", SIGSEGV
);
6077 parse_signal ("sys", SIGSYS
);
6080 parse_signal ("pipe", SIGPIPE
);
6083 parse_signal ("alrm", SIGALRM
);
6086 parse_signal ("urg", SIGURG
);
6089 parse_signal ("stop", SIGSTOP
);
6092 parse_signal ("tstp", SIGTSTP
);
6095 parse_signal ("cont", SIGCONT
);
6098 parse_signal ("chld", SIGCHLD
);
6101 parse_signal ("ttin", SIGTTIN
);
6104 parse_signal ("ttou", SIGTTOU
);
6107 parse_signal ("io", SIGIO
);
6110 parse_signal ("xcpu", SIGXCPU
);
6113 parse_signal ("xfsz", SIGXFSZ
);
6116 parse_signal ("vtalrm", SIGVTALRM
);
6119 parse_signal ("prof", SIGPROF
);
6122 parse_signal ("winch", SIGWINCH
);
6125 parse_signal ("info", SIGINFO
);
6128 error ("Undefined signal name %s", name
);
6133 return make_number (kill (pid
, XINT (sigcode
)));
6136 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6137 doc
: /* Make PROCESS see end-of-file in its input.
6138 EOF comes after any text already sent to it.
6139 PROCESS may be a process, a buffer, the name of a process or buffer, or
6140 nil, indicating the current buffer's process.
6141 If PROCESS is a network connection, or is a process communicating
6142 through a pipe (as opposed to a pty), then you cannot send any more
6143 text to PROCESS after you call this function.
6144 If PROCESS is a serial process, wait until all output written to the
6145 process has been transmitted to the serial port. */)
6146 (Lisp_Object process
)
6149 struct coding_system
*coding
;
6151 if (DATAGRAM_CONN_P (process
))
6154 proc
= get_process (process
);
6155 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6157 /* Make sure the process is really alive. */
6158 if (XPROCESS (proc
)->raw_status_new
)
6159 update_status (XPROCESS (proc
));
6160 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6161 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6163 if (CODING_REQUIRE_FLUSHING (coding
))
6165 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6166 send_process (proc
, "", 0, Qnil
);
6169 if (XPROCESS (proc
)->pty_flag
)
6170 send_process (proc
, "\004", 1, Qnil
);
6171 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6174 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6175 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6176 #endif /* not WINDOWSNT */
6177 /* Do nothing on Windows because writes are blocking. */
6181 int old_outfd
, new_outfd
;
6183 #ifdef HAVE_SHUTDOWN
6184 /* If this is a network connection, or socketpair is used
6185 for communication with the subprocess, call shutdown to cause EOF.
6186 (In some old system, shutdown to socketpair doesn't work.
6187 Then we just can't win.) */
6188 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6189 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6190 shutdown (XPROCESS (proc
)->outfd
, 1);
6191 /* In case of socketpair, outfd == infd, so don't close it. */
6192 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6193 emacs_close (XPROCESS (proc
)->outfd
);
6194 #else /* not HAVE_SHUTDOWN */
6195 emacs_close (XPROCESS (proc
)->outfd
);
6196 #endif /* not HAVE_SHUTDOWN */
6197 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6200 old_outfd
= XPROCESS (proc
)->outfd
;
6202 if (!proc_encode_coding_system
[new_outfd
])
6203 proc_encode_coding_system
[new_outfd
]
6204 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6205 memcpy (proc_encode_coding_system
[new_outfd
],
6206 proc_encode_coding_system
[old_outfd
],
6207 sizeof (struct coding_system
));
6208 memset (proc_encode_coding_system
[old_outfd
], 0,
6209 sizeof (struct coding_system
));
6211 XPROCESS (proc
)->outfd
= new_outfd
;
6216 /* On receipt of a signal that a child status has changed, loop asking
6217 about children with changed statuses until the system says there
6220 All we do is change the status; we do not run sentinels or print
6221 notifications. That is saved for the next time keyboard input is
6222 done, in order to avoid timing errors.
6224 ** WARNING: this can be called during garbage collection.
6225 Therefore, it must not be fooled by the presence of mark bits in
6228 ** USG WARNING: Although it is not obvious from the documentation
6229 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6230 signal() before executing at least one wait(), otherwise the
6231 handler will be called again, resulting in an infinite loop. The
6232 relevant portion of the documentation reads "SIGCLD signals will be
6233 queued and the signal-catching function will be continually
6234 reentered until the queue is empty". Invoking signal() causes the
6235 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6238 ** Malloc WARNING: This should never call malloc either directly or
6239 indirectly; if it does, that is a bug */
6243 sigchld_handler (int signo
)
6245 int old_errno
= errno
;
6247 struct Lisp_Process
*p
;
6249 SIGNAL_THREAD_CHECK (signo
);
6260 #endif /* no WUNTRACED */
6261 /* Keep trying to get a status until we get a definitive result. */
6265 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6267 while (pid
< 0 && errno
== EINTR
);
6271 /* PID == 0 means no processes found, PID == -1 means a real
6272 failure. We have done all our job, so return. */
6279 #endif /* no WNOHANG */
6281 /* Find the process that signaled us, and record its status. */
6283 /* The process can have been deleted by Fdelete_process. */
6284 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6286 Lisp_Object xpid
= XCAR (tail
);
6287 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6288 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6290 XSETCAR (tail
, Qnil
);
6291 goto sigchld_end_of_loop
;
6295 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6297 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6299 proc
= XCDR (XCAR (tail
));
6300 p
= XPROCESS (proc
);
6301 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6306 /* Look for an asynchronous process whose pid hasn't been filled
6309 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6311 proc
= XCDR (XCAR (tail
));
6312 p
= XPROCESS (proc
);
6318 /* Change the status of the process that was found. */
6321 int clear_desc_flag
= 0;
6323 p
->tick
= ++process_tick
;
6325 p
->raw_status_new
= 1;
6327 /* If process has terminated, stop waiting for its output. */
6328 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6330 clear_desc_flag
= 1;
6332 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6333 if (clear_desc_flag
)
6335 FD_CLR (p
->infd
, &input_wait_mask
);
6336 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6339 /* Tell wait_reading_process_output that it needs to wake up and
6341 if (input_available_clear_time
)
6342 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6345 /* There was no asynchronous process found for that pid: we have
6346 a synchronous process. */
6349 synch_process_alive
= 0;
6351 /* Report the status of the synchronous process. */
6353 synch_process_retcode
= WRETCODE (w
);
6354 else if (WIFSIGNALED (w
))
6355 synch_process_termsig
= WTERMSIG (w
);
6357 /* Tell wait_reading_process_output that it needs to wake up and
6359 if (input_available_clear_time
)
6360 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6363 sigchld_end_of_loop
:
6366 /* On some systems, we must return right away.
6367 If any more processes want to signal us, we will
6369 Otherwise (on systems that have WNOHANG), loop around
6370 to use up all the processes that have something to tell us. */
6371 #if (defined WINDOWSNT \
6372 || (defined USG && !defined GNU_LINUX \
6373 && !(defined HPUX && defined WNOHANG)))
6376 #endif /* USG, but not HPUX with WNOHANG */
6379 #endif /* SIGCHLD */
6383 exec_sentinel_unwind (Lisp_Object data
)
6385 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6390 exec_sentinel_error_handler (Lisp_Object error_val
)
6392 cmd_error_internal (error_val
, "error in process sentinel: ");
6394 update_echo_area ();
6395 Fsleep_for (make_number (2), Qnil
);
6400 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6402 Lisp_Object sentinel
, odeactivate
;
6403 register struct Lisp_Process
*p
= XPROCESS (proc
);
6404 int count
= SPECPDL_INDEX ();
6405 int outer_running_asynch_code
= running_asynch_code
;
6406 int waiting
= waiting_for_user_input_p
;
6408 if (inhibit_sentinels
)
6411 /* No need to gcpro these, because all we do with them later
6412 is test them for EQness, and none of them should be a string. */
6413 odeactivate
= Vdeactivate_mark
;
6415 Lisp_Object obuffer
, okeymap
;
6416 XSETBUFFER (obuffer
, current_buffer
);
6417 okeymap
= BVAR (current_buffer
, keymap
);
6420 /* There's no good reason to let sentinels change the current
6421 buffer, and many callers of accept-process-output, sit-for, and
6422 friends don't expect current-buffer to be changed from under them. */
6423 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6425 sentinel
= p
->sentinel
;
6426 if (NILP (sentinel
))
6429 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6430 assure that it gets restored no matter how the sentinel exits. */
6432 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6433 /* Inhibit quit so that random quits don't screw up a running filter. */
6434 specbind (Qinhibit_quit
, Qt
);
6435 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6437 /* In case we get recursively called,
6438 and we already saved the match data nonrecursively,
6439 save the same match data in safely recursive fashion. */
6440 if (outer_running_asynch_code
)
6443 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6444 restore_search_regs ();
6445 record_unwind_save_match_data ();
6446 Fset_match_data (tem
, Qt
);
6449 /* For speed, if a search happens within this code,
6450 save the match data in a special nonrecursive fashion. */
6451 running_asynch_code
= 1;
6453 internal_condition_case_1 (read_process_output_call
,
6455 Fcons (proc
, Fcons (reason
, Qnil
))),
6456 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6457 exec_sentinel_error_handler
);
6459 /* If we saved the match data nonrecursively, restore it now. */
6460 restore_search_regs ();
6461 running_asynch_code
= outer_running_asynch_code
;
6463 Vdeactivate_mark
= odeactivate
;
6465 /* Restore waiting_for_user_input_p as it was
6466 when we were called, in case the filter clobbered it. */
6467 waiting_for_user_input_p
= waiting
;
6470 if (! EQ (Fcurrent_buffer (), obuffer
)
6471 || ! EQ (current_buffer
->keymap
, okeymap
))
6473 /* But do it only if the caller is actually going to read events.
6474 Otherwise there's no need to make him wake up, and it could
6475 cause trouble (for example it would make sit_for return). */
6476 if (waiting_for_user_input_p
== -1)
6477 record_asynch_buffer_change ();
6479 unbind_to (count
, Qnil
);
6482 /* Report all recent events of a change in process status
6483 (either run the sentinel or output a message).
6484 This is usually done while Emacs is waiting for keyboard input
6485 but can be done at other times. */
6488 status_notify (struct Lisp_Process
*deleting_process
)
6490 register Lisp_Object proc
, buffer
;
6491 Lisp_Object tail
, msg
;
6492 struct gcpro gcpro1
, gcpro2
;
6496 /* We need to gcpro tail; if read_process_output calls a filter
6497 which deletes a process and removes the cons to which tail points
6498 from Vprocess_alist, and then causes a GC, tail is an unprotected
6502 /* Set this now, so that if new processes are created by sentinels
6503 that we run, we get called again to handle their status changes. */
6504 update_tick
= process_tick
;
6506 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6509 register struct Lisp_Process
*p
;
6511 proc
= Fcdr (XCAR (tail
));
6512 p
= XPROCESS (proc
);
6514 if (p
->tick
!= p
->update_tick
)
6516 p
->update_tick
= p
->tick
;
6518 /* If process is still active, read any output that remains. */
6519 while (! EQ (p
->filter
, Qt
)
6520 && ! EQ (p
->status
, Qconnect
)
6521 && ! EQ (p
->status
, Qlisten
)
6522 /* Network or serial process not stopped: */
6523 && ! EQ (p
->command
, Qt
)
6525 && p
!= deleting_process
6526 && read_process_output (proc
, p
->infd
) > 0);
6530 /* Get the text to use for the message. */
6531 if (p
->raw_status_new
)
6533 msg
= status_message (p
);
6535 /* If process is terminated, deactivate it or delete it. */
6537 if (CONSP (p
->status
))
6538 symbol
= XCAR (p
->status
);
6540 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6541 || EQ (symbol
, Qclosed
))
6543 if (delete_exited_processes
)
6544 remove_process (proc
);
6546 deactivate_process (proc
);
6549 /* The actions above may have further incremented p->tick.
6550 So set p->update_tick again
6551 so that an error in the sentinel will not cause
6552 this code to be run again. */
6553 p
->update_tick
= p
->tick
;
6554 /* Now output the message suitably. */
6555 if (!NILP (p
->sentinel
))
6556 exec_sentinel (proc
, msg
);
6557 /* Don't bother with a message in the buffer
6558 when a process becomes runnable. */
6559 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6562 struct buffer
*old
= current_buffer
;
6563 EMACS_INT opoint
, opoint_byte
;
6564 EMACS_INT before
, before_byte
;
6566 /* Avoid error if buffer is deleted
6567 (probably that's why the process is dead, too) */
6568 if (NILP (BVAR (XBUFFER (buffer
), name
)))
6570 Fset_buffer (buffer
);
6573 opoint_byte
= PT_BYTE
;
6574 /* Insert new output into buffer
6575 at the current end-of-output marker,
6576 thus preserving logical ordering of input and output. */
6577 if (XMARKER (p
->mark
)->buffer
)
6578 Fgoto_char (p
->mark
);
6580 SET_PT_BOTH (ZV
, ZV_BYTE
);
6583 before_byte
= PT_BYTE
;
6585 tem
= BVAR (current_buffer
, read_only
);
6586 BVAR (current_buffer
, read_only
) = Qnil
;
6587 insert_string ("\nProcess ");
6588 Finsert (1, &p
->name
);
6589 insert_string (" ");
6591 BVAR (current_buffer
, read_only
) = tem
;
6592 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6594 if (opoint
>= before
)
6595 SET_PT_BOTH (opoint
+ (PT
- before
),
6596 opoint_byte
+ (PT_BYTE
- before_byte
));
6598 SET_PT_BOTH (opoint
, opoint_byte
);
6600 set_buffer_internal (old
);
6605 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6610 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6611 Sset_process_coding_system
, 1, 3, 0,
6612 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6613 DECODING will be used to decode subprocess output and ENCODING to
6614 encode subprocess input. */)
6615 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6617 register struct Lisp_Process
*p
;
6619 CHECK_PROCESS (process
);
6620 p
= XPROCESS (process
);
6622 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6624 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6625 Fcheck_coding_system (decoding
);
6626 Fcheck_coding_system (encoding
);
6627 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6628 p
->decode_coding_system
= decoding
;
6629 p
->encode_coding_system
= encoding
;
6630 setup_process_coding_systems (process
);
6635 DEFUN ("process-coding-system",
6636 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6637 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6638 (register Lisp_Object process
)
6640 CHECK_PROCESS (process
);
6641 return Fcons (XPROCESS (process
)->decode_coding_system
,
6642 XPROCESS (process
)->encode_coding_system
);
6645 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6646 Sset_process_filter_multibyte
, 2, 2, 0,
6647 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6648 If FLAG is non-nil, the filter is given multibyte strings.
6649 If FLAG is nil, the filter is given unibyte strings. In this case,
6650 all character code conversion except for end-of-line conversion is
6652 (Lisp_Object process
, Lisp_Object flag
)
6654 register struct Lisp_Process
*p
;
6656 CHECK_PROCESS (process
);
6657 p
= XPROCESS (process
);
6659 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6660 setup_process_coding_systems (process
);
6665 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6666 Sprocess_filter_multibyte_p
, 1, 1, 0,
6667 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6668 (Lisp_Object process
)
6670 register struct Lisp_Process
*p
;
6671 struct coding_system
*coding
;
6673 CHECK_PROCESS (process
);
6674 p
= XPROCESS (process
);
6675 coding
= proc_decode_coding_system
[p
->infd
];
6676 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6685 add_gpm_wait_descriptor (int desc
)
6687 add_keyboard_wait_descriptor (desc
);
6691 delete_gpm_wait_descriptor (int desc
)
6693 delete_keyboard_wait_descriptor (desc
);
6700 /* Return nonzero if *MASK has a bit set
6701 that corresponds to one of the keyboard input descriptors. */
6704 keyboard_bit_set (fd_set
*mask
)
6708 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6709 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6710 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6717 #else /* not subprocesses */
6719 /* Defined on msdos.c. */
6720 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6723 /* Implementation of wait_reading_process_output, assuming that there
6724 are no subprocesses. Used only by the MS-DOS build.
6726 Wait for timeout to elapse and/or keyboard input to be available.
6729 timeout in seconds, or
6730 zero for no limit, or
6731 -1 means gobble data immediately available but don't wait for any.
6733 read_kbd is a Lisp_Object:
6734 0 to ignore keyboard input, or
6735 1 to return when input is available, or
6736 -1 means caller will actually read the input, so don't throw to
6739 see full version for other parameters. We know that wait_proc will
6740 always be NULL, since `subprocesses' isn't defined.
6742 do_display != 0 means redisplay should be done to show subprocess
6743 output that arrives.
6745 Return true if we received input from any process. */
6748 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6750 Lisp_Object wait_for_cell
,
6751 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6754 EMACS_TIME end_time
, timeout
;
6755 SELECT_TYPE waitchannels
;
6758 /* What does time_limit really mean? */
6759 if (time_limit
|| microsecs
)
6761 EMACS_GET_TIME (end_time
);
6762 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6763 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6766 /* Turn off periodic alarms (in case they are in use)
6767 and then turn off any other atimers,
6768 because the select emulator uses alarms. */
6770 turn_on_atimers (0);
6774 int timeout_reduced_for_timers
= 0;
6776 /* If calling from keyboard input, do not quit
6777 since we want to return C-g as an input character.
6778 Otherwise, do pending quit if requested. */
6782 /* Exit now if the cell we're waiting for became non-nil. */
6783 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6786 /* Compute time from now till when time limit is up */
6787 /* Exit if already run out */
6788 if (time_limit
== -1)
6790 /* -1 specified for timeout means
6791 gobble output available now
6792 but don't wait at all. */
6794 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6796 else if (time_limit
|| microsecs
)
6798 EMACS_GET_TIME (timeout
);
6799 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6800 if (EMACS_TIME_NEG_P (timeout
))
6805 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6808 /* If our caller will not immediately handle keyboard events,
6809 run timer events directly.
6810 (Callers that will immediately read keyboard events
6811 call timer_delay on their own.) */
6812 if (NILP (wait_for_cell
))
6814 EMACS_TIME timer_delay
;
6818 int old_timers_run
= timers_run
;
6819 timer_delay
= timer_check ();
6820 if (timers_run
!= old_timers_run
&& do_display
)
6821 /* We must retry, since a timer may have requeued itself
6822 and that could alter the time delay. */
6823 redisplay_preserve_echo_area (14);
6827 while (!detect_input_pending ());
6829 /* If there is unread keyboard input, also return. */
6831 && requeued_events_pending_p ())
6834 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6836 EMACS_TIME difference
;
6837 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6838 if (EMACS_TIME_NEG_P (difference
))
6840 timeout
= timer_delay
;
6841 timeout_reduced_for_timers
= 1;
6846 /* Cause C-g and alarm signals to take immediate action,
6847 and cause input available signals to zero out timeout. */
6849 set_waiting_for_input (&timeout
);
6851 /* Wait till there is something to do. */
6853 if (! read_kbd
&& NILP (wait_for_cell
))
6854 FD_ZERO (&waitchannels
);
6856 FD_SET (0, &waitchannels
);
6858 /* If a frame has been newly mapped and needs updating,
6859 reprocess its display stuff. */
6860 if (frame_garbaged
&& do_display
)
6862 clear_waiting_for_input ();
6863 redisplay_preserve_echo_area (15);
6865 set_waiting_for_input (&timeout
);
6868 if (read_kbd
&& detect_input_pending ())
6871 FD_ZERO (&waitchannels
);
6874 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6879 /* Make C-g and alarm signals set flags again */
6880 clear_waiting_for_input ();
6882 /* If we woke up due to SIGWINCH, actually change size now. */
6883 do_pending_window_change (0);
6885 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6886 /* We waited the full specified time, so return now. */
6891 /* If the system call was interrupted, then go around the
6893 if (xerrno
== EINTR
)
6894 FD_ZERO (&waitchannels
);
6896 error ("select error: %s", emacs_strerror (xerrno
));
6899 /* Check for keyboard input */
6902 && detect_input_pending_run_timers (do_display
))
6904 swallow_events (do_display
);
6905 if (detect_input_pending_run_timers (do_display
))
6909 /* If there is unread keyboard input, also return. */
6911 && requeued_events_pending_p ())
6914 /* If wait_for_cell. check for keyboard input
6915 but don't run any timers.
6916 ??? (It seems wrong to me to check for keyboard
6917 input at all when wait_for_cell, but the code
6918 has been this way since July 1994.
6919 Try changing this after version 19.31.) */
6920 if (! NILP (wait_for_cell
)
6921 && detect_input_pending ())
6923 swallow_events (do_display
);
6924 if (detect_input_pending ())
6928 /* Exit now if the cell we're waiting for became non-nil. */
6929 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6938 #endif /* not subprocesses */
6940 /* The following functions are needed even if async subprocesses are
6941 not supported. Some of them are no-op stubs in that case. */
6943 /* Add DESC to the set of keyboard input descriptors. */
6946 add_keyboard_wait_descriptor (int desc
)
6948 #ifdef subprocesses /* actually means "not MSDOS" */
6949 FD_SET (desc
, &input_wait_mask
);
6950 FD_SET (desc
, &non_process_wait_mask
);
6951 if (desc
> max_input_desc
)
6952 max_input_desc
= desc
;
6956 /* From now on, do not expect DESC to give keyboard input. */
6959 delete_keyboard_wait_descriptor (int desc
)
6963 int lim
= max_input_desc
;
6965 FD_CLR (desc
, &input_wait_mask
);
6966 FD_CLR (desc
, &non_process_wait_mask
);
6968 if (desc
== max_input_desc
)
6969 for (fd
= 0; fd
< lim
; fd
++)
6970 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
6971 max_input_desc
= fd
;
6975 /* Setup coding systems of PROCESS. */
6978 setup_process_coding_systems (Lisp_Object process
)
6981 struct Lisp_Process
*p
= XPROCESS (process
);
6983 int outch
= p
->outfd
;
6984 Lisp_Object coding_system
;
6986 if (inch
< 0 || outch
< 0)
6989 if (!proc_decode_coding_system
[inch
])
6990 proc_decode_coding_system
[inch
]
6991 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6992 coding_system
= p
->decode_coding_system
;
6993 if (! NILP (p
->filter
))
6995 else if (BUFFERP (p
->buffer
))
6997 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6998 coding_system
= raw_text_coding_system (coding_system
);
7000 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7002 if (!proc_encode_coding_system
[outch
])
7003 proc_encode_coding_system
[outch
]
7004 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
7005 setup_coding_system (p
->encode_coding_system
,
7006 proc_encode_coding_system
[outch
]);
7010 /* Close all descriptors currently in use for communication
7011 with subprocess. This is used in a newly-forked subprocess
7012 to get rid of irrelevant descriptors. */
7015 close_process_descs (void)
7019 for (i
= 0; i
< MAXDESC
; i
++)
7021 Lisp_Object process
;
7022 process
= chan_process
[i
];
7023 if (!NILP (process
))
7025 int in
= XPROCESS (process
)->infd
;
7026 int out
= XPROCESS (process
)->outfd
;
7029 if (out
>= 0 && in
!= out
)
7036 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7037 doc
: /* Return the (or a) process associated with BUFFER.
7038 BUFFER may be a buffer or the name of one. */)
7039 (register Lisp_Object buffer
)
7042 register Lisp_Object buf
, tail
, proc
;
7044 if (NILP (buffer
)) return Qnil
;
7045 buf
= Fget_buffer (buffer
);
7046 if (NILP (buf
)) return Qnil
;
7048 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7050 proc
= Fcdr (XCAR (tail
));
7051 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
7054 #endif /* subprocesses */
7058 DEFUN ("process-inherit-coding-system-flag",
7059 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7061 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7062 If this flag is t, `buffer-file-coding-system' of the buffer
7063 associated with PROCESS will inherit the coding system used to decode
7064 the process output. */)
7065 (register Lisp_Object process
)
7068 CHECK_PROCESS (process
);
7069 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7071 /* Ignore the argument and return the value of
7072 inherit-process-coding-system. */
7073 return inherit_process_coding_system
? Qt
: Qnil
;
7077 /* Kill all processes associated with `buffer'.
7078 If `buffer' is nil, kill all processes */
7081 kill_buffer_processes (Lisp_Object buffer
)
7084 Lisp_Object tail
, proc
;
7086 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7088 proc
= XCDR (XCAR (tail
));
7090 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7092 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7093 Fdelete_process (proc
);
7094 else if (XPROCESS (proc
)->infd
>= 0)
7095 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7098 #else /* subprocesses */
7099 /* Since we have no subprocesses, this does nothing. */
7100 #endif /* subprocesses */
7103 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7104 Swaiting_for_user_input_p
, 0, 0, 0,
7105 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7106 This is intended for use by asynchronous process output filters and sentinels. */)
7110 return (waiting_for_user_input_p
? Qt
: Qnil
);
7116 /* Stop reading input from keyboard sources. */
7119 hold_keyboard_input (void)
7124 /* Resume reading input from keyboard sources. */
7127 unhold_keyboard_input (void)
7132 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7135 kbd_on_hold_p (void)
7137 return kbd_is_on_hold
;
7141 /* Enumeration of and access to system processes a-la ps(1). */
7143 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7145 doc
: /* Return a list of numerical process IDs of all running processes.
7146 If this functionality is unsupported, return nil.
7148 See `process-attributes' for getting attributes of a process given its ID. */)
7151 return list_system_processes ();
7154 DEFUN ("process-attributes", Fprocess_attributes
,
7155 Sprocess_attributes
, 1, 1, 0,
7156 doc
: /* Return attributes of the process given by its PID, a number.
7158 Value is an alist where each element is a cons cell of the form
7162 If this functionality is unsupported, the value is nil.
7164 See `list-system-processes' for getting a list of all process IDs.
7166 The KEYs of the attributes that this function may return are listed
7167 below, together with the type of the associated VALUE (in parentheses).
7168 Not all platforms support all of these attributes; unsupported
7169 attributes will not appear in the returned alist.
7170 Unless explicitly indicated otherwise, numbers can have either
7171 integer or floating point values.
7173 euid -- Effective user User ID of the process (number)
7174 user -- User name corresponding to euid (string)
7175 egid -- Effective user Group ID of the process (number)
7176 group -- Group name corresponding to egid (string)
7177 comm -- Command name (executable name only) (string)
7178 state -- Process state code, such as "S", "R", or "T" (string)
7179 ppid -- Parent process ID (number)
7180 pgrp -- Process group ID (number)
7181 sess -- Session ID, i.e. process ID of session leader (number)
7182 ttname -- Controlling tty name (string)
7183 tpgid -- ID of foreground process group on the process's tty (number)
7184 minflt -- number of minor page faults (number)
7185 majflt -- number of major page faults (number)
7186 cminflt -- cumulative number of minor page faults (number)
7187 cmajflt -- cumulative number of major page faults (number)
7188 utime -- user time used by the process, in the (HIGH LOW USEC) format
7189 stime -- system time used by the process, in the (HIGH LOW USEC) format
7190 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7191 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7192 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7193 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7194 pri -- priority of the process (number)
7195 nice -- nice value of the process (number)
7196 thcount -- process thread count (number)
7197 start -- time the process started, in the (HIGH LOW USEC) format
7198 vsize -- virtual memory size of the process in KB's (number)
7199 rss -- resident set size of the process in KB's (number)
7200 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7201 pcpu -- percents of CPU time used by the process (floating-point number)
7202 pmem -- percents of total physical memory used by process's resident set
7203 (floating-point number)
7204 args -- command line which invoked the process (string). */)
7207 return system_process_attributes (pid
);
7217 inhibit_sentinels
= 0;
7221 if (! noninteractive
|| initialized
)
7223 signal (SIGCHLD
, sigchld_handler
);
7226 FD_ZERO (&input_wait_mask
);
7227 FD_ZERO (&non_keyboard_wait_mask
);
7228 FD_ZERO (&non_process_wait_mask
);
7229 FD_ZERO (&write_mask
);
7230 max_process_desc
= 0;
7231 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7233 #ifdef NON_BLOCKING_CONNECT
7234 FD_ZERO (&connect_wait_mask
);
7235 num_pending_connects
= 0;
7238 #ifdef ADAPTIVE_READ_BUFFERING
7239 process_output_delay_count
= 0;
7240 process_output_skip
= 0;
7243 /* Don't do this, it caused infinite select loops. The display
7244 method should call add_keyboard_wait_descriptor on stdin if it
7247 FD_SET (0, &input_wait_mask
);
7250 Vprocess_alist
= Qnil
;
7252 deleted_pid_list
= Qnil
;
7254 for (i
= 0; i
< MAXDESC
; i
++)
7256 chan_process
[i
] = Qnil
;
7257 proc_buffered_char
[i
] = -1;
7259 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7260 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7261 #ifdef DATAGRAM_SOCKETS
7262 memset (datagram_address
, 0, sizeof datagram_address
);
7266 Lisp_Object subfeatures
= Qnil
;
7267 const struct socket_options
*sopt
;
7269 #define ADD_SUBFEATURE(key, val) \
7270 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7272 #ifdef NON_BLOCKING_CONNECT
7273 ADD_SUBFEATURE (QCnowait
, Qt
);
7275 #ifdef DATAGRAM_SOCKETS
7276 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7278 #ifdef HAVE_SEQPACKET
7279 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7281 #ifdef HAVE_LOCAL_SOCKETS
7282 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7284 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7286 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7288 #ifdef HAVE_GETSOCKNAME
7289 ADD_SUBFEATURE (QCservice
, Qt
);
7291 #if defined (O_NONBLOCK) || defined (O_NDELAY)
7292 ADD_SUBFEATURE (QCserver
, Qt
);
7295 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7296 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7298 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7301 #if defined (DARWIN_OS)
7302 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7303 processes. As such, we only change the default value. */
7306 char const *release
= (STRINGP (Voperating_system_release
)
7307 ? SSDATA (Voperating_system_release
)
7309 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7310 && release
[1] == '.')) {
7311 Vprocess_connection_type
= Qnil
;
7315 #endif /* subprocesses */
7320 syms_of_process (void)
7324 DEFSYM (Qprocessp
, "processp");
7325 DEFSYM (Qrun
, "run");
7326 DEFSYM (Qstop
, "stop");
7327 DEFSYM (Qsignal
, "signal");
7329 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7332 Qexit = intern_c_string ("exit");
7333 staticpro (&Qexit); */
7335 DEFSYM (Qopen
, "open");
7336 DEFSYM (Qclosed
, "closed");
7337 DEFSYM (Qconnect
, "connect");
7338 DEFSYM (Qfailed
, "failed");
7339 DEFSYM (Qlisten
, "listen");
7340 DEFSYM (Qlocal
, "local");
7341 DEFSYM (Qipv4
, "ipv4");
7343 DEFSYM (Qipv6
, "ipv6");
7345 DEFSYM (Qdatagram
, "datagram");
7346 DEFSYM (Qseqpacket
, "seqpacket");
7348 DEFSYM (QCport
, ":port");
7349 DEFSYM (QCspeed
, ":speed");
7350 DEFSYM (QCprocess
, ":process");
7352 DEFSYM (QCbytesize
, ":bytesize");
7353 DEFSYM (QCstopbits
, ":stopbits");
7354 DEFSYM (QCparity
, ":parity");
7355 DEFSYM (Qodd
, "odd");
7356 DEFSYM (Qeven
, "even");
7357 DEFSYM (QCflowcontrol
, ":flowcontrol");
7360 DEFSYM (QCsummary
, ":summary");
7362 DEFSYM (Qreal
, "real");
7363 DEFSYM (Qnetwork
, "network");
7364 DEFSYM (Qserial
, "serial");
7365 DEFSYM (QCbuffer
, ":buffer");
7366 DEFSYM (QChost
, ":host");
7367 DEFSYM (QCservice
, ":service");
7368 DEFSYM (QClocal
, ":local");
7369 DEFSYM (QCremote
, ":remote");
7370 DEFSYM (QCcoding
, ":coding");
7371 DEFSYM (QCserver
, ":server");
7372 DEFSYM (QCnowait
, ":nowait");
7373 DEFSYM (QCsentinel
, ":sentinel");
7374 DEFSYM (QClog
, ":log");
7375 DEFSYM (QCnoquery
, ":noquery");
7376 DEFSYM (QCstop
, ":stop");
7377 DEFSYM (QCoptions
, ":options");
7378 DEFSYM (QCplist
, ":plist");
7380 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7382 staticpro (&Vprocess_alist
);
7384 staticpro (&deleted_pid_list
);
7387 #endif /* subprocesses */
7389 DEFSYM (QCname
, ":name");
7390 DEFSYM (QCtype
, ":type");
7392 DEFSYM (Qeuid
, "euid");
7393 DEFSYM (Qegid
, "egid");
7394 DEFSYM (Quser
, "user");
7395 DEFSYM (Qgroup
, "group");
7396 DEFSYM (Qcomm
, "comm");
7397 DEFSYM (Qstate
, "state");
7398 DEFSYM (Qppid
, "ppid");
7399 DEFSYM (Qpgrp
, "pgrp");
7400 DEFSYM (Qsess
, "sess");
7401 DEFSYM (Qttname
, "ttname");
7402 DEFSYM (Qtpgid
, "tpgid");
7403 DEFSYM (Qminflt
, "minflt");
7404 DEFSYM (Qmajflt
, "majflt");
7405 DEFSYM (Qcminflt
, "cminflt");
7406 DEFSYM (Qcmajflt
, "cmajflt");
7407 DEFSYM (Qutime
, "utime");
7408 DEFSYM (Qstime
, "stime");
7409 DEFSYM (Qtime
, "time");
7410 DEFSYM (Qcutime
, "cutime");
7411 DEFSYM (Qcstime
, "cstime");
7412 DEFSYM (Qctime
, "ctime");
7413 DEFSYM (Qpri
, "pri");
7414 DEFSYM (Qnice
, "nice");
7415 DEFSYM (Qthcount
, "thcount");
7416 DEFSYM (Qstart
, "start");
7417 DEFSYM (Qvsize
, "vsize");
7418 DEFSYM (Qrss
, "rss");
7419 DEFSYM (Qetime
, "etime");
7420 DEFSYM (Qpcpu
, "pcpu");
7421 DEFSYM (Qpmem
, "pmem");
7422 DEFSYM (Qargs
, "args");
7424 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7425 doc
: /* *Non-nil means delete processes immediately when they exit.
7426 A value of nil means don't delete them until `list-processes' is run. */);
7428 delete_exited_processes
= 1;
7431 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7432 doc
: /* Control type of device used to communicate with subprocesses.
7433 Values are nil to use a pipe, or t or `pty' to use a pty.
7434 The value has no effect if the system has no ptys or if all ptys are busy:
7435 then a pipe is used in any case.
7436 The value takes effect when `start-process' is called. */);
7437 Vprocess_connection_type
= Qt
;
7439 #ifdef ADAPTIVE_READ_BUFFERING
7440 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7441 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7442 On some systems, when Emacs reads the output from a subprocess, the output data
7443 is read in very small blocks, potentially resulting in very poor performance.
7444 This behavior can be remedied to some extent by setting this variable to a
7445 non-nil value, as it will automatically delay reading from such processes, to
7446 allow them to produce more output before Emacs tries to read it.
7447 If the value is t, the delay is reset after each write to the process; any other
7448 non-nil value means that the delay is not reset on write.
7449 The variable takes effect when `start-process' is called. */);
7450 Vprocess_adaptive_read_buffering
= Qt
;
7453 defsubr (&Sprocessp
);
7454 defsubr (&Sget_process
);
7455 defsubr (&Sdelete_process
);
7456 defsubr (&Sprocess_status
);
7457 defsubr (&Sprocess_exit_status
);
7458 defsubr (&Sprocess_id
);
7459 defsubr (&Sprocess_name
);
7460 defsubr (&Sprocess_tty_name
);
7461 defsubr (&Sprocess_command
);
7462 defsubr (&Sset_process_buffer
);
7463 defsubr (&Sprocess_buffer
);
7464 defsubr (&Sprocess_mark
);
7465 defsubr (&Sset_process_filter
);
7466 defsubr (&Sprocess_filter
);
7467 defsubr (&Sset_process_sentinel
);
7468 defsubr (&Sprocess_sentinel
);
7469 defsubr (&Sset_process_window_size
);
7470 defsubr (&Sset_process_inherit_coding_system_flag
);
7471 defsubr (&Sset_process_query_on_exit_flag
);
7472 defsubr (&Sprocess_query_on_exit_flag
);
7473 defsubr (&Sprocess_contact
);
7474 defsubr (&Sprocess_plist
);
7475 defsubr (&Sset_process_plist
);
7476 defsubr (&Sprocess_list
);
7477 defsubr (&Sstart_process
);
7478 defsubr (&Sserial_process_configure
);
7479 defsubr (&Smake_serial_process
);
7480 defsubr (&Sset_network_process_option
);
7481 defsubr (&Smake_network_process
);
7482 defsubr (&Sformat_network_address
);
7483 #if defined (HAVE_NET_IF_H)
7485 defsubr (&Snetwork_interface_list
);
7487 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
7488 defsubr (&Snetwork_interface_info
);
7490 #endif /* defined (HAVE_NET_IF_H) */
7491 #ifdef DATAGRAM_SOCKETS
7492 defsubr (&Sprocess_datagram_address
);
7493 defsubr (&Sset_process_datagram_address
);
7495 defsubr (&Saccept_process_output
);
7496 defsubr (&Sprocess_send_region
);
7497 defsubr (&Sprocess_send_string
);
7498 defsubr (&Sinterrupt_process
);
7499 defsubr (&Skill_process
);
7500 defsubr (&Squit_process
);
7501 defsubr (&Sstop_process
);
7502 defsubr (&Scontinue_process
);
7503 defsubr (&Sprocess_running_child_p
);
7504 defsubr (&Sprocess_send_eof
);
7505 defsubr (&Ssignal_process
);
7506 defsubr (&Swaiting_for_user_input_p
);
7507 defsubr (&Sprocess_type
);
7508 defsubr (&Sset_process_coding_system
);
7509 defsubr (&Sprocess_coding_system
);
7510 defsubr (&Sset_process_filter_multibyte
);
7511 defsubr (&Sprocess_filter_multibyte_p
);
7513 #endif /* subprocesses */
7515 defsubr (&Sget_buffer_process
);
7516 defsubr (&Sprocess_inherit_coding_system_flag
);
7517 defsubr (&Slist_system_processes
);
7518 defsubr (&Sprocess_attributes
);