1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
31 #ifdef HAVE_INTTYPES_H
38 /* Only MS-DOS does not define `subprocesses'. */
41 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
46 /* Are local (unix) sockets supported? */
47 #if defined (HAVE_SYS_UN_H)
48 #if !defined (AF_LOCAL) && defined (AF_UNIX)
49 #define AF_LOCAL AF_UNIX
52 #define HAVE_LOCAL_SOCKETS
57 #include <sys/ioctl.h>
58 #if defined(HAVE_NET_IF_H)
60 #endif /* HAVE_NET_IF_H */
67 #include <netinet/in.h>
68 #include <arpa/nameser.h>
80 #endif /* subprocesses */
88 #include "character.h"
92 #include "termhooks.h"
96 #include "blockinput.h"
97 #include "dispextern.h"
98 #include "composite.h"
100 #include "sysselect.h"
101 #include "syssignal.h"
107 #if defined (USE_GTK) || defined (HAVE_GCONF)
108 #include "xgselect.h"
109 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
114 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
115 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
116 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
117 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
118 Lisp_Object QCname
, QCtype
;
120 /* Non-zero if keyboard input is on hold, zero otherwise. */
122 static int kbd_is_on_hold
;
124 /* Nonzero means don't run process sentinels. This is used
126 int inhibit_sentinels
;
130 Lisp_Object Qprocessp
;
131 static Lisp_Object Qrun
, Qstop
, Qsignal
;
132 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
134 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
135 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
137 static Lisp_Object Qipv6
;
139 static Lisp_Object QCport
, QCprocess
;
141 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
142 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
143 static Lisp_Object QCbuffer
, QChost
, QCservice
;
144 static Lisp_Object QClocal
, QCremote
, QCcoding
;
145 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
146 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
147 static Lisp_Object Qlast_nonmenu_event
;
148 /* QCfamily is declared and initialized in xfaces.c,
149 QCfilter in keyboard.c. */
150 extern Lisp_Object QCfamily
, QCfilter
;
152 /* Qexit is declared and initialized in eval.c. */
154 /* QCfamily is defined in xfaces.c. */
155 extern Lisp_Object QCfamily
;
156 /* QCfilter is defined in keyboard.c. */
157 extern Lisp_Object QCfilter
;
159 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
160 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
161 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
162 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
168 /* Number of events of change of status of a process. */
169 static int process_tick
;
170 /* Number of events for which the user or sentinel has been notified. */
171 static int update_tick
;
173 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
175 /* Only W32 has this, it really means that select can't take write mask. */
176 #ifdef BROKEN_NON_BLOCKING_CONNECT
177 #undef NON_BLOCKING_CONNECT
178 #define SELECT_CANT_DO_WRITE_MASK
180 #ifndef NON_BLOCKING_CONNECT
182 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
183 #if defined (O_NONBLOCK) || defined (O_NDELAY)
184 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
185 #define NON_BLOCKING_CONNECT
186 #endif /* EWOULDBLOCK || EINPROGRESS */
187 #endif /* O_NONBLOCK || O_NDELAY */
188 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
189 #endif /* HAVE_SELECT */
190 #endif /* NON_BLOCKING_CONNECT */
191 #endif /* BROKEN_NON_BLOCKING_CONNECT */
193 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
194 this system. We need to read full packets, so we need a
195 "non-destructive" select. So we require either native select,
196 or emulation of select using FIONREAD. */
198 #ifdef BROKEN_DATAGRAM_SOCKETS
199 #undef DATAGRAM_SOCKETS
201 #ifndef DATAGRAM_SOCKETS
202 #if defined (HAVE_SELECT) || defined (FIONREAD)
203 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
204 #define DATAGRAM_SOCKETS
205 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
206 #endif /* HAVE_SELECT || FIONREAD */
207 #endif /* DATAGRAM_SOCKETS */
208 #endif /* BROKEN_DATAGRAM_SOCKETS */
210 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
211 # define HAVE_SEQPACKET
214 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
215 #ifdef EMACS_HAS_USECS
216 #define ADAPTIVE_READ_BUFFERING
220 #ifdef ADAPTIVE_READ_BUFFERING
221 #define READ_OUTPUT_DELAY_INCREMENT 10000
222 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
223 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
225 /* Number of processes which have a non-zero read_output_delay,
226 and therefore might be delayed for adaptive read buffering. */
228 static int process_output_delay_count
;
230 /* Non-zero if any process has non-nil read_output_skip. */
232 static int process_output_skip
;
235 #define process_output_delay_count 0
238 static Lisp_Object
Fget_process (Lisp_Object
);
239 static void create_process (Lisp_Object
, char **, Lisp_Object
);
241 static int keyboard_bit_set (SELECT_TYPE
*);
243 static void deactivate_process (Lisp_Object
);
244 static void status_notify (struct Lisp_Process
*);
245 static int read_process_output (Lisp_Object
, int);
246 static void create_pty (Lisp_Object
);
248 /* If we support a window system, turn on the code to poll periodically
249 to detect C-g. It isn't actually used when doing interrupt input. */
250 #ifdef HAVE_WINDOW_SYSTEM
251 #define POLL_FOR_INPUT
254 static Lisp_Object
get_process (register Lisp_Object name
);
255 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
257 /* Mask of bits indicating the descriptors that we wait for input on. */
259 static SELECT_TYPE input_wait_mask
;
261 /* Mask that excludes keyboard input descriptor(s). */
263 static SELECT_TYPE non_keyboard_wait_mask
;
265 /* Mask that excludes process input descriptor(s). */
267 static SELECT_TYPE non_process_wait_mask
;
269 /* Mask for selecting for write. */
271 static SELECT_TYPE write_mask
;
273 #ifdef NON_BLOCKING_CONNECT
274 /* Mask of bits indicating the descriptors that we wait for connect to
275 complete on. Once they complete, they are removed from this mask
276 and added to the input_wait_mask and non_keyboard_wait_mask. */
278 static SELECT_TYPE connect_wait_mask
;
280 /* Number of bits set in connect_wait_mask. */
281 static int num_pending_connects
;
282 #endif /* NON_BLOCKING_CONNECT */
284 /* The largest descriptor currently in use for a process object. */
285 static int max_process_desc
;
287 /* The largest descriptor currently in use for input. */
288 static int max_input_desc
;
290 /* Indexed by descriptor, gives the process (if any) for that descriptor */
291 static Lisp_Object chan_process
[MAXDESC
];
293 /* Alist of elements (NAME . PROCESS) */
294 static Lisp_Object Vprocess_alist
;
296 /* Buffered-ahead input char from process, indexed by channel.
297 -1 means empty (no char is buffered).
298 Used on sys V where the only way to tell if there is any
299 output from the process is to read at least one char.
300 Always -1 on systems that support FIONREAD. */
302 static int proc_buffered_char
[MAXDESC
];
304 /* Table of `struct coding-system' for each process. */
305 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
306 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
308 #ifdef DATAGRAM_SOCKETS
309 /* Table of `partner address' for datagram sockets. */
310 static struct sockaddr_and_len
{
313 } datagram_address
[MAXDESC
];
314 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
315 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
317 #define DATAGRAM_CHAN_P(chan) (0)
318 #define DATAGRAM_CONN_P(proc) (0)
321 /* Maximum number of bytes to send to a pty without an eof. */
322 static int pty_max_bytes
;
326 static struct fd_callback_data
332 int condition
; /* mask of the defines above. */
333 } fd_callback_info
[MAXDESC
];
336 /* Add a file descriptor FD to be monitored for when read is possible.
337 When read is possible, call FUNC with argument DATA. */
340 add_read_fd (int fd
, fd_callback func
, void *data
)
342 xassert (fd
< MAXDESC
);
343 add_keyboard_wait_descriptor (fd
);
345 fd_callback_info
[fd
].func
= func
;
346 fd_callback_info
[fd
].data
= data
;
347 fd_callback_info
[fd
].condition
|= FOR_READ
;
350 /* Stop monitoring file descriptor FD for when read is possible. */
353 delete_read_fd (int fd
)
355 xassert (fd
< MAXDESC
);
356 delete_keyboard_wait_descriptor (fd
);
358 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
359 if (fd_callback_info
[fd
].condition
== 0)
361 fd_callback_info
[fd
].func
= 0;
362 fd_callback_info
[fd
].data
= 0;
366 /* Add a file descriptor FD to be monitored for when write is possible.
367 When write is possible, call FUNC with argument DATA. */
370 add_write_fd (int fd
, fd_callback func
, void *data
)
372 xassert (fd
< MAXDESC
);
373 FD_SET (fd
, &write_mask
);
374 if (fd
> max_input_desc
)
377 fd_callback_info
[fd
].func
= func
;
378 fd_callback_info
[fd
].data
= data
;
379 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
382 /* Stop monitoring file descriptor FD for when write is possible. */
385 delete_write_fd (int fd
)
387 int lim
= max_input_desc
;
389 xassert (fd
< MAXDESC
);
390 FD_CLR (fd
, &write_mask
);
391 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
392 if (fd_callback_info
[fd
].condition
== 0)
394 fd_callback_info
[fd
].func
= 0;
395 fd_callback_info
[fd
].data
= 0;
397 if (fd
== max_input_desc
)
398 for (fd
= lim
; fd
>= 0; fd
--)
399 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
409 /* Compute the Lisp form of the process status, p->status, from
410 the numeric status that was returned by `wait'. */
412 static Lisp_Object
status_convert (int);
415 update_status (struct Lisp_Process
*p
)
417 eassert (p
->raw_status_new
);
418 p
->status
= status_convert (p
->raw_status
);
419 p
->raw_status_new
= 0;
422 /* Convert a process status word in Unix format to
423 the list that we use internally. */
426 status_convert (int w
)
429 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
430 else if (WIFEXITED (w
))
431 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
432 WCOREDUMP (w
) ? Qt
: Qnil
));
433 else if (WIFSIGNALED (w
))
434 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
435 WCOREDUMP (w
) ? Qt
: Qnil
));
440 /* Given a status-list, extract the three pieces of information
441 and store them individually through the three pointers. */
444 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
458 *code
= XFASTINT (XCAR (tem
));
460 *coredump
= !NILP (tem
);
464 /* Return a string describing a process status list. */
467 status_message (struct Lisp_Process
*p
)
469 Lisp_Object status
= p
->status
;
472 Lisp_Object string
, string2
;
474 decode_status (status
, &symbol
, &code
, &coredump
);
476 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
479 synchronize_system_messages_locale ();
480 signame
= strsignal (code
);
482 string
= build_string ("unknown");
487 string
= make_unibyte_string (signame
, strlen (signame
));
488 if (! NILP (Vlocale_coding_system
))
489 string
= (code_convert_string_norecord
490 (string
, Vlocale_coding_system
, 0));
491 c1
= STRING_CHAR (SDATA (string
));
494 Faset (string
, make_number (0), make_number (c2
));
496 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
497 return concat2 (string
, string2
);
499 else if (EQ (symbol
, Qexit
))
502 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
504 return build_string ("finished\n");
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
507 return concat3 (build_string ("exited abnormally with code "),
510 else if (EQ (symbol
, Qfailed
))
512 string
= Fnumber_to_string (make_number (code
));
513 string2
= build_string ("\n");
514 return concat3 (build_string ("failed with code "),
518 return Fcopy_sequence (Fsymbol_name (symbol
));
523 /* The file name of the pty opened by allocate_pty. */
524 static char pty_name
[24];
526 /* Open an available pty, returning a file descriptor.
527 Return -1 on failure.
528 The file name of the terminal corresponding to the pty
529 is left in the variable pty_name. */
540 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
541 for (i
= 0; i
< 16; i
++)
544 #ifdef PTY_NAME_SPRINTF
547 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
548 #endif /* no PTY_NAME_SPRINTF */
552 #else /* no PTY_OPEN */
554 { /* Some systems name their pseudoterminals so that there are gaps in
555 the usual sequence - for example, on HP9000/S700 systems, there
556 are no pseudoterminals with names ending in 'f'. So we wait for
557 three failures in a row before deciding that we've reached the
559 int failed_count
= 0;
562 if (stat (pty_name
, &stb
) < 0)
565 if (failed_count
>= 3)
572 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
574 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
577 #endif /* no PTY_OPEN */
581 /* check to make certain that both sides are available
582 this avoids a nasty yet stupid bug in rlogins */
583 #ifdef PTY_TTY_NAME_SPRINTF
586 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
587 #endif /* no PTY_TTY_NAME_SPRINTF */
588 if (access (pty_name
, 6) != 0)
603 #endif /* HAVE_PTYS */
606 make_process (Lisp_Object name
)
608 register Lisp_Object val
, tem
, name1
;
609 register struct Lisp_Process
*p
;
613 p
= allocate_process ();
621 p
->raw_status_new
= 0;
623 p
->mark
= Fmake_marker ();
624 p
->kill_without_query
= 0;
626 #ifdef ADAPTIVE_READ_BUFFERING
627 p
->adaptive_read_buffering
= 0;
628 p
->read_output_delay
= 0;
629 p
->read_output_skip
= 0;
633 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
634 p
->gnutls_log_level
= 0;
638 /* If name is already in use, modify it until it is unused. */
643 tem
= Fget_process (name1
);
644 if (NILP (tem
)) break;
645 sprintf (suffix
, "<%d>", i
);
646 name1
= concat2 (name
, build_string (suffix
));
650 XSETPROCESS (val
, p
);
651 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
656 remove_process (register Lisp_Object proc
)
658 register Lisp_Object pair
;
660 pair
= Frassq (proc
, Vprocess_alist
);
661 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
663 deactivate_process (proc
);
667 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
668 doc
: /* Return t if OBJECT is a process. */)
671 return PROCESSP (object
) ? Qt
: Qnil
;
674 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
675 doc
: /* Return the process named NAME, or nil if there is none. */)
676 (register Lisp_Object name
)
681 return Fcdr (Fassoc (name
, Vprocess_alist
));
684 /* This is how commands for the user decode process arguments. It
685 accepts a process, a process name, a buffer, a buffer name, or nil.
686 Buffers denote the first process in the buffer, and nil denotes the
690 get_process (register Lisp_Object name
)
692 register Lisp_Object proc
, obj
;
695 obj
= Fget_process (name
);
697 obj
= Fget_buffer (name
);
699 error ("Process %s does not exist", SDATA (name
));
701 else if (NILP (name
))
702 obj
= Fcurrent_buffer ();
706 /* Now obj should be either a buffer object or a process object.
710 proc
= Fget_buffer_process (obj
);
712 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
724 /* Fdelete_process promises to immediately forget about the process, but in
725 reality, Emacs needs to remember those processes until they have been
726 treated by sigchld_handler; otherwise this handler would consider the
727 process as being synchronous and say that the synchronous process is
729 static Lisp_Object deleted_pid_list
;
732 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
733 doc
: /* Delete PROCESS: kill it and forget about it immediately.
734 PROCESS may be a process, a buffer, the name of a process or buffer, or
735 nil, indicating the current buffer's process. */)
736 (register Lisp_Object process
)
738 register struct Lisp_Process
*p
;
740 process
= get_process (process
);
741 p
= XPROCESS (process
);
743 p
->raw_status_new
= 0;
744 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
746 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
747 p
->tick
= ++process_tick
;
749 redisplay_preserve_echo_area (13);
751 else if (p
->infd
>= 0)
755 /* Assignment to EMACS_INT stops GCC whining about limited range
757 EMACS_INT pid
= p
->pid
;
759 /* No problem storing the pid here, as it is still in Vprocess_alist. */
760 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
761 /* GC treated elements set to nil. */
762 Fdelq (Qnil
, deleted_pid_list
));
763 /* If the process has already signaled, remove it from the list. */
764 if (p
->raw_status_new
)
767 if (CONSP (p
->status
))
768 symbol
= XCAR (p
->status
);
769 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
771 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
775 Fkill_process (process
, Qnil
);
776 /* Do this now, since remove_process will make sigchld_handler do nothing. */
778 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
779 p
->tick
= ++process_tick
;
781 redisplay_preserve_echo_area (13);
784 remove_process (process
);
788 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
789 doc
: /* Return the status of PROCESS.
790 The returned value is one of the following symbols:
791 run -- for a process that is running.
792 stop -- for a process stopped but continuable.
793 exit -- for a process that has exited.
794 signal -- for a process that has got a fatal signal.
795 open -- for a network stream connection that is open.
796 listen -- for a network stream server that is listening.
797 closed -- for a network stream connection that is closed.
798 connect -- when waiting for a non-blocking connection to complete.
799 failed -- when a non-blocking connection has failed.
800 nil -- if arg is a process name and no such process exists.
801 PROCESS may be a process, a buffer, the name of a process, or
802 nil, indicating the current buffer's process. */)
803 (register Lisp_Object process
)
805 register struct Lisp_Process
*p
;
806 register Lisp_Object status
;
808 if (STRINGP (process
))
809 process
= Fget_process (process
);
811 process
= get_process (process
);
816 p
= XPROCESS (process
);
817 if (p
->raw_status_new
)
821 status
= XCAR (status
);
822 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
824 if (EQ (status
, Qexit
))
826 else if (EQ (p
->command
, Qt
))
828 else if (EQ (status
, Qrun
))
834 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
836 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
837 If PROCESS has not yet exited or died, return 0. */)
838 (register Lisp_Object process
)
840 CHECK_PROCESS (process
);
841 if (XPROCESS (process
)->raw_status_new
)
842 update_status (XPROCESS (process
));
843 if (CONSP (XPROCESS (process
)->status
))
844 return XCAR (XCDR (XPROCESS (process
)->status
));
845 return make_number (0);
848 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
849 doc
: /* Return the process id of PROCESS.
850 This is the pid of the external process which PROCESS uses or talks to.
851 For a network connection, this value is nil. */)
852 (register Lisp_Object process
)
854 /* Assignment to EMACS_INT stops GCC whining about limited range of
858 CHECK_PROCESS (process
);
859 pid
= XPROCESS (process
)->pid
;
860 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
863 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
864 doc
: /* Return the name of PROCESS, as a string.
865 This is the name of the program invoked in PROCESS,
866 possibly modified to make it unique among process names. */)
867 (register Lisp_Object process
)
869 CHECK_PROCESS (process
);
870 return XPROCESS (process
)->name
;
873 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
874 doc
: /* Return the command that was executed to start PROCESS.
875 This is a list of strings, the first string being the program executed
876 and the rest of the strings being the arguments given to it.
877 For a network or serial process, this is nil (process is running) or t
878 \(process is stopped). */)
879 (register Lisp_Object process
)
881 CHECK_PROCESS (process
);
882 return XPROCESS (process
)->command
;
885 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
886 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
887 This is the terminal that the process itself reads and writes on,
888 not the name of the pty that Emacs uses to talk with that terminal. */)
889 (register Lisp_Object process
)
891 CHECK_PROCESS (process
);
892 return XPROCESS (process
)->tty_name
;
895 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
897 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
898 (register Lisp_Object process
, Lisp_Object buffer
)
900 struct Lisp_Process
*p
;
902 CHECK_PROCESS (process
);
904 CHECK_BUFFER (buffer
);
905 p
= XPROCESS (process
);
907 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
908 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
909 setup_process_coding_systems (process
);
913 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
915 doc
: /* Return the buffer PROCESS is associated with.
916 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
917 (register Lisp_Object process
)
919 CHECK_PROCESS (process
);
920 return XPROCESS (process
)->buffer
;
923 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
925 doc
: /* Return the marker for the end of the last output from PROCESS. */)
926 (register Lisp_Object process
)
928 CHECK_PROCESS (process
);
929 return XPROCESS (process
)->mark
;
932 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
934 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
935 A value of t means stop accepting output from the process.
937 When a process has a filter, its buffer is not used for output.
938 Instead, each time it does output, the entire string of output is
939 passed to the filter.
941 The filter gets two arguments: the process and the string of output.
942 The string argument is normally a multibyte string, except:
943 - if the process' input coding system is no-conversion or raw-text,
944 it is a unibyte string (the non-converted input), or else
945 - if `default-enable-multibyte-characters' is nil, it is a unibyte
946 string (the result of converting the decoded input multibyte
947 string to unibyte with `string-make-unibyte'). */)
948 (register Lisp_Object process
, Lisp_Object filter
)
950 struct Lisp_Process
*p
;
952 CHECK_PROCESS (process
);
953 p
= XPROCESS (process
);
955 /* Don't signal an error if the process' input file descriptor
956 is closed. This could make debugging Lisp more difficult,
957 for example when doing something like
959 (setq process (start-process ...))
961 (set-process-filter process ...) */
965 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
967 FD_CLR (p
->infd
, &input_wait_mask
);
968 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
970 else if (EQ (p
->filter
, Qt
)
971 /* Network or serial process not stopped: */
972 && !EQ (p
->command
, Qt
))
974 FD_SET (p
->infd
, &input_wait_mask
);
975 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
980 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
981 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
982 setup_process_coding_systems (process
);
986 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
988 doc
: /* Returns the filter function of PROCESS; nil if none.
989 See `set-process-filter' for more info on filter functions. */)
990 (register Lisp_Object process
)
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->filter
;
996 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
998 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
999 The sentinel is called as a function when the process changes state.
1000 It gets two arguments: the process, and a string describing the change. */)
1001 (register Lisp_Object process
, Lisp_Object sentinel
)
1003 struct Lisp_Process
*p
;
1005 CHECK_PROCESS (process
);
1006 p
= XPROCESS (process
);
1008 p
->sentinel
= sentinel
;
1009 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1010 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1014 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1016 doc
: /* Return the sentinel of PROCESS; nil if none.
1017 See `set-process-sentinel' for more info on sentinels. */)
1018 (register Lisp_Object process
)
1020 CHECK_PROCESS (process
);
1021 return XPROCESS (process
)->sentinel
;
1024 DEFUN ("set-process-window-size", Fset_process_window_size
,
1025 Sset_process_window_size
, 3, 3, 0,
1026 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1027 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1029 CHECK_PROCESS (process
);
1030 CHECK_NATNUM (height
);
1031 CHECK_NATNUM (width
);
1033 if (XPROCESS (process
)->infd
< 0
1034 || set_window_size (XPROCESS (process
)->infd
,
1035 XINT (height
), XINT (width
)) <= 0)
1041 DEFUN ("set-process-inherit-coding-system-flag",
1042 Fset_process_inherit_coding_system_flag
,
1043 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1044 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1045 If the second argument FLAG is non-nil, then the variable
1046 `buffer-file-coding-system' of the buffer associated with PROCESS
1047 will be bound to the value of the coding system used to decode
1050 This is useful when the coding system specified for the process buffer
1051 leaves either the character code conversion or the end-of-line conversion
1052 unspecified, or if the coding system used to decode the process output
1053 is more appropriate for saving the process buffer.
1055 Binding the variable `inherit-process-coding-system' to non-nil before
1056 starting the process is an alternative way of setting the inherit flag
1057 for the process which will run. */)
1058 (register Lisp_Object process
, Lisp_Object flag
)
1060 CHECK_PROCESS (process
);
1061 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1065 DEFUN ("set-process-query-on-exit-flag",
1066 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1068 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1069 If the second argument FLAG is non-nil, Emacs will query the user before
1070 exiting or killing a buffer if PROCESS is running. */)
1071 (register Lisp_Object process
, Lisp_Object flag
)
1073 CHECK_PROCESS (process
);
1074 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1078 DEFUN ("process-query-on-exit-flag",
1079 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1081 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1082 (register Lisp_Object process
)
1084 CHECK_PROCESS (process
);
1085 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1088 #ifdef DATAGRAM_SOCKETS
1089 static Lisp_Object
Fprocess_datagram_address (Lisp_Object
);
1092 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1094 doc
: /* Return the contact info of PROCESS; t for a real child.
1095 For a network or serial connection, the value depends on the optional
1096 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1097 SERVICE) for a network connection or (PORT SPEED) for a serial
1098 connection. If KEY is t, the complete contact information for the
1099 connection is returned, else the specific value for the keyword KEY is
1100 returned. See `make-network-process' or `make-serial-process' for a
1101 list of keywords. */)
1102 (register Lisp_Object process
, Lisp_Object key
)
1104 Lisp_Object contact
;
1106 CHECK_PROCESS (process
);
1107 contact
= XPROCESS (process
)->childp
;
1109 #ifdef DATAGRAM_SOCKETS
1110 if (DATAGRAM_CONN_P (process
)
1111 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1112 contact
= Fplist_put (contact
, QCremote
,
1113 Fprocess_datagram_address (process
));
1116 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1118 if (NILP (key
) && NETCONN_P (process
))
1119 return Fcons (Fplist_get (contact
, QChost
),
1120 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1121 if (NILP (key
) && SERIALCONN_P (process
))
1122 return Fcons (Fplist_get (contact
, QCport
),
1123 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1124 return Fplist_get (contact
, key
);
1127 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1129 doc
: /* Return the plist of PROCESS. */)
1130 (register Lisp_Object process
)
1132 CHECK_PROCESS (process
);
1133 return XPROCESS (process
)->plist
;
1136 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1138 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1139 (register Lisp_Object process
, Lisp_Object plist
)
1141 CHECK_PROCESS (process
);
1144 XPROCESS (process
)->plist
= plist
;
1148 #if 0 /* Turned off because we don't currently record this info
1149 in the process. Perhaps add it. */
1150 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1151 doc
: /* Return the connection type of PROCESS.
1152 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1153 a socket connection. */)
1154 (Lisp_Object process
)
1156 return XPROCESS (process
)->type
;
1160 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1161 doc
: /* Return the connection type of PROCESS.
1162 The value is either the symbol `real', `network', or `serial'.
1163 PROCESS may be a process, a buffer, the name of a process or buffer, or
1164 nil, indicating the current buffer's process. */)
1165 (Lisp_Object process
)
1168 proc
= get_process (process
);
1169 return XPROCESS (proc
)->type
;
1172 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1174 doc
: /* Convert network ADDRESS from internal format to a string.
1175 A 4 or 5 element vector represents an IPv4 address (with port number).
1176 An 8 or 9 element vector represents an IPv6 address (with port number).
1177 If optional second argument OMIT-PORT is non-nil, don't include a port
1178 number in the string, even when present in ADDRESS.
1179 Returns nil if format of ADDRESS is invalid. */)
1180 (Lisp_Object address
, Lisp_Object omit_port
)
1185 if (STRINGP (address
)) /* AF_LOCAL */
1188 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1190 register struct Lisp_Vector
*p
= XVECTOR (address
);
1191 Lisp_Object args
[10];
1194 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1196 args
[0] = build_string ("%d.%d.%d.%d");
1199 else if (p
->size
== 5)
1201 args
[0] = build_string ("%d.%d.%d.%d:%d");
1204 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1206 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1209 else if (p
->size
== 9)
1211 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1217 for (i
= 0; i
< nargs
; i
++)
1219 EMACS_INT element
= XINT (p
->contents
[i
]);
1221 if (element
< 0 || element
> 65535)
1224 if (nargs
<= 5 /* IPv4 */
1225 && i
< 4 /* host, not port */
1229 args
[i
+1] = p
->contents
[i
];
1232 return Fformat (nargs
+1, args
);
1235 if (CONSP (address
))
1237 Lisp_Object args
[2];
1238 args
[0] = build_string ("<Family %d>");
1239 args
[1] = Fcar (address
);
1240 return Fformat (2, args
);
1246 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1247 doc
: /* Return a list of all processes. */)
1250 return Fmapcar (Qcdr
, Vprocess_alist
);
1253 /* Starting asynchronous inferior processes. */
1255 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1257 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1258 doc
: /* Start a program in a subprocess. Return the process object for it.
1259 NAME is name for process. It is modified if necessary to make it unique.
1260 BUFFER is the buffer (or buffer name) to associate with the process.
1262 Process output (both standard output and standard error streams) goes
1263 at end of BUFFER, unless you specify an output stream or filter
1264 function to handle the output. BUFFER may also be nil, meaning that
1265 this process is not associated with any buffer.
1267 PROGRAM is the program file name. It is searched for in `exec-path'
1268 (which see). If nil, just associate a pty with the buffer. Remaining
1269 arguments are strings to give program as arguments.
1271 If you want to separate standard output from standard error, invoke
1272 the command through a shell and redirect one of them using the shell
1275 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1276 (size_t nargs
, register Lisp_Object
*args
)
1278 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1279 register unsigned char **new_argv
;
1281 int count
= SPECPDL_INDEX ();
1285 buffer
= Fget_buffer_create (buffer
);
1287 /* Make sure that the child will be able to chdir to the current
1288 buffer's current directory, or its unhandled equivalent. We
1289 can't just have the child check for an error when it does the
1290 chdir, since it's in a vfork.
1292 We have to GCPRO around this because Fexpand_file_name and
1293 Funhandled_file_name_directory might call a file name handling
1294 function. The argument list is protected by the caller, so all
1295 we really have to worry about is buffer. */
1297 struct gcpro gcpro1
, gcpro2
;
1299 current_dir
= BVAR (current_buffer
, directory
);
1301 GCPRO2 (buffer
, current_dir
);
1303 current_dir
= Funhandled_file_name_directory (current_dir
);
1304 if (NILP (current_dir
))
1305 /* If the file name handler says that current_dir is unreachable, use
1306 a sensible default. */
1307 current_dir
= build_string ("~/");
1308 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1309 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1310 report_file_error ("Setting current directory",
1311 Fcons (BVAR (current_buffer
, directory
), Qnil
));
1317 CHECK_STRING (name
);
1321 if (!NILP (program
))
1322 CHECK_STRING (program
);
1324 proc
= make_process (name
);
1325 /* If an error occurs and we can't start the process, we want to
1326 remove it from the process list. This means that each error
1327 check in create_process doesn't need to call remove_process
1328 itself; it's all taken care of here. */
1329 record_unwind_protect (start_process_unwind
, proc
);
1331 XPROCESS (proc
)->childp
= Qt
;
1332 XPROCESS (proc
)->plist
= Qnil
;
1333 XPROCESS (proc
)->type
= Qreal
;
1334 XPROCESS (proc
)->buffer
= buffer
;
1335 XPROCESS (proc
)->sentinel
= Qnil
;
1336 XPROCESS (proc
)->filter
= Qnil
;
1337 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1340 /* AKA GNUTLS_INITSTAGE(proc). */
1341 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1342 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1345 #ifdef ADAPTIVE_READ_BUFFERING
1346 XPROCESS (proc
)->adaptive_read_buffering
1347 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1348 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1351 /* Make the process marker point into the process buffer (if any). */
1352 if (BUFFERP (buffer
))
1353 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1354 BUF_ZV (XBUFFER (buffer
)),
1355 BUF_ZV_BYTE (XBUFFER (buffer
)));
1358 /* Decide coding systems for communicating with the process. Here
1359 we don't setup the structure coding_system nor pay attention to
1360 unibyte mode. They are done in create_process. */
1362 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1363 Lisp_Object coding_systems
= Qt
;
1364 Lisp_Object val
, *args2
;
1365 struct gcpro gcpro1
, gcpro2
;
1367 val
= Vcoding_system_for_read
;
1370 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1371 args2
[0] = Qstart_process
;
1372 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1373 GCPRO2 (proc
, current_dir
);
1374 if (!NILP (program
))
1375 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1377 if (CONSP (coding_systems
))
1378 val
= XCAR (coding_systems
);
1379 else if (CONSP (Vdefault_process_coding_system
))
1380 val
= XCAR (Vdefault_process_coding_system
);
1382 XPROCESS (proc
)->decode_coding_system
= val
;
1384 val
= Vcoding_system_for_write
;
1387 if (EQ (coding_systems
, Qt
))
1389 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1390 args2
[0] = Qstart_process
;
1391 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1392 GCPRO2 (proc
, current_dir
);
1393 if (!NILP (program
))
1394 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1397 if (CONSP (coding_systems
))
1398 val
= XCDR (coding_systems
);
1399 else if (CONSP (Vdefault_process_coding_system
))
1400 val
= XCDR (Vdefault_process_coding_system
);
1402 XPROCESS (proc
)->encode_coding_system
= val
;
1403 /* Note: At this momemnt, the above coding system may leave
1404 text-conversion or eol-conversion unspecified. They will be
1405 decided after we read output from the process and decode it by
1406 some coding system, or just before we actually send a text to
1411 XPROCESS (proc
)->decoding_buf
= empty_unibyte_string
;
1412 XPROCESS (proc
)->decoding_carryover
= 0;
1413 XPROCESS (proc
)->encoding_buf
= empty_unibyte_string
;
1415 XPROCESS (proc
)->inherit_coding_system_flag
1416 = !(NILP (buffer
) || !inherit_process_coding_system
);
1418 if (!NILP (program
))
1420 /* If program file name is not absolute, search our path for it.
1421 Put the name we will really use in TEM. */
1422 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1423 && !(SCHARS (program
) > 1
1424 && IS_DEVICE_SEP (SREF (program
, 1))))
1426 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1429 GCPRO4 (name
, program
, buffer
, current_dir
);
1430 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1433 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1434 tem
= Fexpand_file_name (tem
, Qnil
);
1438 if (!NILP (Ffile_directory_p (program
)))
1439 error ("Specified program for new process is a directory");
1443 /* If program file name starts with /: for quoting a magic name,
1445 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1446 && SREF (tem
, 1) == ':')
1447 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1450 Lisp_Object arg_encoding
= Qnil
;
1451 struct gcpro gcpro1
;
1454 /* Encode the file name and put it in NEW_ARGV.
1455 That's where the child will use it to execute the program. */
1456 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1458 /* Here we encode arguments by the coding system used for sending
1459 data to the process. We don't support using different coding
1460 systems for encoding arguments and for encoding data sent to the
1463 for (i
= 3; i
< nargs
; i
++)
1465 tem
= Fcons (args
[i
], tem
);
1466 CHECK_STRING (XCAR (tem
));
1467 if (STRING_MULTIBYTE (XCAR (tem
)))
1469 if (NILP (arg_encoding
))
1470 arg_encoding
= (complement_process_encoding_system
1471 (XPROCESS (proc
)->encode_coding_system
));
1473 code_convert_string_norecord
1474 (XCAR (tem
), arg_encoding
, 1));
1481 /* Now that everything is encoded we can collect the strings into
1483 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1484 new_argv
[nargs
- 2] = 0;
1486 for (i
= nargs
- 2; i
-- != 0; )
1488 new_argv
[i
] = SDATA (XCAR (tem
));
1492 create_process (proc
, (char **) new_argv
, current_dir
);
1497 return unbind_to (count
, proc
);
1500 /* This function is the unwind_protect form for Fstart_process. If
1501 PROC doesn't have its pid set, then we know someone has signaled
1502 an error and the process wasn't started successfully, so we should
1503 remove it from the process list. */
1505 start_process_unwind (Lisp_Object proc
)
1507 if (!PROCESSP (proc
))
1510 /* Was PROC started successfully? */
1511 if (XPROCESS (proc
)->pid
== -1)
1512 remove_process (proc
);
1518 create_process_1 (struct atimer
*timer
)
1520 /* Nothing to do. */
1525 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1527 int inchannel
, outchannel
;
1530 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1531 int wait_child_setup
[2];
1535 struct sigaction sigint_action
;
1536 struct sigaction sigquit_action
;
1537 struct sigaction sigpipe_action
;
1539 struct sigaction sighup_action
;
1541 /* Use volatile to protect variables from being clobbered by longjmp. */
1542 volatile int forkin
, forkout
;
1543 volatile int pty_flag
= 0;
1545 extern char **environ
;
1548 inchannel
= outchannel
= -1;
1551 if (!NILP (Vprocess_connection_type
))
1552 outchannel
= inchannel
= allocate_pty ();
1556 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1557 /* On most USG systems it does not work to open the pty's tty here,
1558 then close it and reopen it in the child. */
1560 /* Don't let this terminal become our controlling terminal
1561 (in case we don't have one). */
1562 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1564 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1567 report_file_error ("Opening pty", Qnil
);
1569 forkin
= forkout
= -1;
1570 #endif /* not USG, or USG_SUBTTY_WORKS */
1574 #endif /* HAVE_PTYS */
1579 report_file_error ("Creating pipe", Qnil
);
1585 emacs_close (inchannel
);
1586 emacs_close (forkout
);
1587 report_file_error ("Creating pipe", Qnil
);
1593 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1597 tem
= pipe (wait_child_setup
);
1599 report_file_error ("Creating pipe", Qnil
);
1600 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1602 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1605 emacs_close (wait_child_setup
[0]);
1606 emacs_close (wait_child_setup
[1]);
1607 report_file_error ("Setting file descriptor flags", Qnil
);
1613 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1614 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1617 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1618 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1622 /* Record this as an active process, with its channels.
1623 As a result, child_setup will close Emacs's side of the pipes. */
1624 chan_process
[inchannel
] = process
;
1625 XPROCESS (process
)->infd
= inchannel
;
1626 XPROCESS (process
)->outfd
= outchannel
;
1628 /* Previously we recorded the tty descriptor used in the subprocess.
1629 It was only used for getting the foreground tty process, so now
1630 we just reopen the device (see emacs_get_tty_pgrp) as this is
1631 more portable (see USG_SUBTTY_WORKS above). */
1633 XPROCESS (process
)->pty_flag
= pty_flag
;
1634 XPROCESS (process
)->status
= Qrun
;
1635 setup_process_coding_systems (process
);
1637 /* Delay interrupts until we have a chance to store
1638 the new fork's pid in its process structure */
1639 sigemptyset (&blocked
);
1641 sigaddset (&blocked
, SIGCHLD
);
1643 #ifdef HAVE_WORKING_VFORK
1644 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1645 this sets the parent's signal handlers as well as the child's.
1646 So delay all interrupts whose handlers the child might munge,
1647 and record the current handlers so they can be restored later. */
1648 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1649 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1650 sigaddset (&blocked
, SIGPIPE
); sigaction (SIGPIPE
, 0, &sigpipe_action
);
1652 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1654 #endif /* HAVE_WORKING_VFORK */
1655 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1657 FD_SET (inchannel
, &input_wait_mask
);
1658 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1659 if (inchannel
> max_process_desc
)
1660 max_process_desc
= inchannel
;
1662 /* Until we store the proper pid, enable sigchld_handler
1663 to recognize an unknown pid as standing for this process.
1664 It is very important not to let this `marker' value stay
1665 in the table after this function has returned; if it does
1666 it might cause call-process to hang and subsequent asynchronous
1667 processes to get their return values scrambled. */
1668 XPROCESS (process
)->pid
= -1;
1673 /* child_setup must clobber environ on systems with true vfork.
1674 Protect it from permanent change. */
1675 char **save_environ
= environ
;
1676 volatile Lisp_Object encoded_current_dir
= ENCODE_FILE (current_dir
);
1681 #endif /* not WINDOWSNT */
1683 int xforkin
= forkin
;
1684 int xforkout
= forkout
;
1686 #if 0 /* This was probably a mistake--it duplicates code later on,
1687 but fails to handle all the cases. */
1688 /* Make sure SIGCHLD is not blocked in the child. */
1689 sigsetmask (SIGEMPTYMASK
);
1692 /* Make the pty be the controlling terminal of the process. */
1694 /* First, disconnect its current controlling terminal. */
1696 /* We tried doing setsid only if pty_flag, but it caused
1697 process_set_signal to fail on SGI when using a pipe. */
1699 /* Make the pty's terminal the controlling terminal. */
1700 if (pty_flag
&& xforkin
>= 0)
1703 /* We ignore the return value
1704 because faith@cs.unc.edu says that is necessary on Linux. */
1705 ioctl (xforkin
, TIOCSCTTY
, 0);
1708 #else /* not HAVE_SETSID */
1710 /* It's very important to call setpgrp here and no time
1711 afterwards. Otherwise, we lose our controlling tty which
1712 is set when we open the pty. */
1715 #endif /* not HAVE_SETSID */
1716 #if defined (LDISC1)
1717 if (pty_flag
&& xforkin
>= 0)
1720 tcgetattr (xforkin
, &t
);
1722 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1723 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1726 #if defined (NTTYDISC) && defined (TIOCSETD)
1727 if (pty_flag
&& xforkin
>= 0)
1729 /* Use new line discipline. */
1730 int ldisc
= NTTYDISC
;
1731 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1736 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1737 can do TIOCSPGRP only to the process's controlling tty. */
1740 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1741 I can't test it since I don't have 4.3. */
1742 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1745 ioctl (j
, TIOCNOTTY
, 0);
1749 /* In order to get a controlling terminal on some versions
1750 of BSD, it is necessary to put the process in pgrp 0
1751 before it opens the terminal. */
1759 #endif /* TIOCNOTTY */
1761 #if !defined (DONT_REOPEN_PTY)
1762 /*** There is a suggestion that this ought to be a
1763 conditional on TIOCSPGRP,
1764 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1765 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1766 that system does seem to need this code, even though
1767 both HAVE_SETSID and TIOCSCTTY are defined. */
1768 /* Now close the pty (if we had it open) and reopen it.
1769 This makes the pty the controlling terminal of the subprocess. */
1773 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1776 emacs_close (xforkin
);
1777 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1781 emacs_write (1, "Couldn't open the pty terminal ", 31);
1782 emacs_write (1, pty_name
, strlen (pty_name
));
1783 emacs_write (1, "\n", 1);
1788 #endif /* not DONT_REOPEN_PTY */
1790 #ifdef SETUP_SLAVE_PTY
1795 #endif /* SETUP_SLAVE_PTY */
1797 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1798 Now reenable it in the child, so it will die when we want it to. */
1800 signal (SIGHUP
, SIG_DFL
);
1802 #endif /* HAVE_PTYS */
1804 signal (SIGINT
, SIG_DFL
);
1805 signal (SIGQUIT
, SIG_DFL
);
1806 /* GConf causes us to ignore SIGPIPE, make sure it is restored
1808 signal (SIGPIPE
, SIG_DFL
);
1810 /* Stop blocking signals in the child. */
1811 sigprocmask (SIG_SETMASK
, &procmask
, 0);
1814 child_setup_tty (xforkout
);
1816 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1817 new_argv
, 1, encoded_current_dir
);
1818 #else /* not WINDOWSNT */
1820 emacs_close (wait_child_setup
[0]);
1822 child_setup (xforkin
, xforkout
, xforkout
,
1823 new_argv
, 1, encoded_current_dir
);
1824 #endif /* not WINDOWSNT */
1826 environ
= save_environ
;
1831 /* This runs in the Emacs process. */
1835 emacs_close (forkin
);
1836 if (forkin
!= forkout
&& forkout
>= 0)
1837 emacs_close (forkout
);
1841 /* vfork succeeded. */
1842 XPROCESS (process
)->pid
= pid
;
1845 register_child (pid
, inchannel
);
1846 #endif /* WINDOWSNT */
1848 /* If the subfork execv fails, and it exits,
1849 this close hangs. I don't know why.
1850 So have an interrupt jar it loose. */
1852 struct atimer
*timer
;
1856 EMACS_SET_SECS_USECS (offset
, 1, 0);
1857 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
1860 emacs_close (forkin
);
1862 cancel_atimer (timer
);
1866 if (forkin
!= forkout
&& forkout
>= 0)
1867 emacs_close (forkout
);
1871 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1874 XPROCESS (process
)->tty_name
= Qnil
;
1876 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1877 /* Wait for child_setup to complete in case that vfork is
1878 actually defined as fork. The descriptor wait_child_setup[1]
1879 of a pipe is closed at the child side either by close-on-exec
1880 on successful execvp or the _exit call in child_setup. */
1884 emacs_close (wait_child_setup
[1]);
1885 emacs_read (wait_child_setup
[0], &dummy
, 1);
1886 emacs_close (wait_child_setup
[0]);
1891 /* Restore the signal state whether vfork succeeded or not.
1892 (We will signal an error, below, if it failed.) */
1893 #ifdef HAVE_WORKING_VFORK
1894 /* Restore the parent's signal handlers. */
1895 sigaction (SIGINT
, &sigint_action
, 0);
1896 sigaction (SIGQUIT
, &sigquit_action
, 0);
1897 sigaction (SIGPIPE
, &sigpipe_action
, 0);
1899 sigaction (SIGHUP
, &sighup_action
, 0);
1901 #endif /* HAVE_WORKING_VFORK */
1902 /* Stop blocking signals in the parent. */
1903 sigprocmask (SIG_SETMASK
, &procmask
, 0);
1905 /* Now generate the error if vfork failed. */
1907 report_file_error ("Doing vfork", Qnil
);
1911 create_pty (Lisp_Object process
)
1913 int inchannel
, outchannel
;
1916 inchannel
= outchannel
= -1;
1919 if (!NILP (Vprocess_connection_type
))
1920 outchannel
= inchannel
= allocate_pty ();
1924 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1925 /* On most USG systems it does not work to open the pty's tty here,
1926 then close it and reopen it in the child. */
1928 /* Don't let this terminal become our controlling terminal
1929 (in case we don't have one). */
1930 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1932 int forkout
= emacs_open (pty_name
, O_RDWR
, 0);
1935 report_file_error ("Opening pty", Qnil
);
1936 #if defined (DONT_REOPEN_PTY)
1937 /* In the case that vfork is defined as fork, the parent process
1938 (Emacs) may send some data before the child process completes
1939 tty options setup. So we setup tty before forking. */
1940 child_setup_tty (forkout
);
1941 #endif /* DONT_REOPEN_PTY */
1942 #endif /* not USG, or USG_SUBTTY_WORKS */
1945 #endif /* HAVE_PTYS */
1948 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1949 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1952 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1953 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1957 /* Record this as an active process, with its channels.
1958 As a result, child_setup will close Emacs's side of the pipes. */
1959 chan_process
[inchannel
] = process
;
1960 XPROCESS (process
)->infd
= inchannel
;
1961 XPROCESS (process
)->outfd
= outchannel
;
1963 /* Previously we recorded the tty descriptor used in the subprocess.
1964 It was only used for getting the foreground tty process, so now
1965 we just reopen the device (see emacs_get_tty_pgrp) as this is
1966 more portable (see USG_SUBTTY_WORKS above). */
1968 XPROCESS (process
)->pty_flag
= pty_flag
;
1969 XPROCESS (process
)->status
= Qrun
;
1970 setup_process_coding_systems (process
);
1972 FD_SET (inchannel
, &input_wait_mask
);
1973 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1974 if (inchannel
> max_process_desc
)
1975 max_process_desc
= inchannel
;
1977 XPROCESS (process
)->pid
= -2;
1980 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1983 XPROCESS (process
)->tty_name
= Qnil
;
1987 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1988 The address family of sa is not included in the result. */
1991 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1993 Lisp_Object address
;
1996 register struct Lisp_Vector
*p
;
1998 /* Workaround for a bug in getsockname on BSD: Names bound to
1999 sockets in the UNIX domain are inaccessible; getsockname returns
2000 a zero length name. */
2001 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2002 return empty_unibyte_string
;
2004 switch (sa
->sa_family
)
2008 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2009 len
= sizeof (sin
->sin_addr
) + 1;
2010 address
= Fmake_vector (make_number (len
), Qnil
);
2011 p
= XVECTOR (address
);
2012 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2013 cp
= (unsigned char *) &sin
->sin_addr
;
2019 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2020 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2021 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2022 address
= Fmake_vector (make_number (len
), Qnil
);
2023 p
= XVECTOR (address
);
2024 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2025 for (i
= 0; i
< len
; i
++)
2026 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2030 #ifdef HAVE_LOCAL_SOCKETS
2033 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2034 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2035 if (sockun
->sun_path
[i
] == 0)
2037 return make_unibyte_string (sockun
->sun_path
, i
);
2041 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2042 address
= Fcons (make_number (sa
->sa_family
),
2043 Fmake_vector (make_number (len
), Qnil
));
2044 p
= XVECTOR (XCDR (address
));
2045 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2051 p
->contents
[i
++] = make_number (*cp
++);
2057 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2060 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2062 register struct Lisp_Vector
*p
;
2064 if (VECTORP (address
))
2066 p
= XVECTOR (address
);
2070 return sizeof (struct sockaddr_in
);
2073 else if (p
->size
== 9)
2075 *familyp
= AF_INET6
;
2076 return sizeof (struct sockaddr_in6
);
2080 #ifdef HAVE_LOCAL_SOCKETS
2081 else if (STRINGP (address
))
2083 *familyp
= AF_LOCAL
;
2084 return sizeof (struct sockaddr_un
);
2087 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2089 struct sockaddr
*sa
;
2090 *familyp
= XINT (XCAR (address
));
2091 p
= XVECTOR (XCDR (address
));
2092 return p
->size
+ sizeof (sa
->sa_family
);
2097 /* Convert an address object (vector or string) to an internal sockaddr.
2099 The address format has been basically validated by
2100 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2101 it could have come from user data. So if FAMILY is not valid,
2102 we return after zeroing *SA. */
2105 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2107 register struct Lisp_Vector
*p
;
2108 register unsigned char *cp
= NULL
;
2111 memset (sa
, 0, len
);
2113 if (VECTORP (address
))
2115 p
= XVECTOR (address
);
2116 if (family
== AF_INET
)
2118 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2119 len
= sizeof (sin
->sin_addr
) + 1;
2120 i
= XINT (p
->contents
[--len
]);
2121 sin
->sin_port
= htons (i
);
2122 cp
= (unsigned char *)&sin
->sin_addr
;
2123 sa
->sa_family
= family
;
2126 else if (family
== AF_INET6
)
2128 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2129 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2130 len
= sizeof (sin6
->sin6_addr
) + 1;
2131 i
= XINT (p
->contents
[--len
]);
2132 sin6
->sin6_port
= htons (i
);
2133 for (i
= 0; i
< len
; i
++)
2134 if (INTEGERP (p
->contents
[i
]))
2136 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2139 sa
->sa_family
= family
;
2146 else if (STRINGP (address
))
2148 #ifdef HAVE_LOCAL_SOCKETS
2149 if (family
== AF_LOCAL
)
2151 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2152 cp
= SDATA (address
);
2153 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2154 sockun
->sun_path
[i
] = *cp
++;
2155 sa
->sa_family
= family
;
2162 p
= XVECTOR (XCDR (address
));
2163 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2166 for (i
= 0; i
< len
; i
++)
2167 if (INTEGERP (p
->contents
[i
]))
2168 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2171 #ifdef DATAGRAM_SOCKETS
2172 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2174 doc
: /* Get the current datagram address associated with PROCESS. */)
2175 (Lisp_Object process
)
2179 CHECK_PROCESS (process
);
2181 if (!DATAGRAM_CONN_P (process
))
2184 channel
= XPROCESS (process
)->infd
;
2185 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2186 datagram_address
[channel
].len
);
2189 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2191 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2192 Returns nil upon error setting address, ADDRESS otherwise. */)
2193 (Lisp_Object process
, Lisp_Object address
)
2198 CHECK_PROCESS (process
);
2200 if (!DATAGRAM_CONN_P (process
))
2203 channel
= XPROCESS (process
)->infd
;
2205 len
= get_lisp_to_sockaddr_size (address
, &family
);
2206 if (datagram_address
[channel
].len
!= len
)
2208 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2214 static const struct socket_options
{
2215 /* The name of this option. Should be lowercase version of option
2216 name without SO_ prefix. */
2218 /* Option level SOL_... */
2220 /* Option number SO_... */
2222 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2223 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2224 } socket_options
[] =
2226 #ifdef SO_BINDTODEVICE
2227 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2230 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2233 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2236 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2239 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2242 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2245 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2248 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2250 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2253 /* Set option OPT to value VAL on socket S.
2255 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2256 Signals an error if setting a known option fails.
2260 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2263 const struct socket_options
*sopt
;
2268 name
= SSDATA (SYMBOL_NAME (opt
));
2269 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2270 if (strcmp (name
, sopt
->name
) == 0)
2273 switch (sopt
->opttype
)
2278 optval
= NILP (val
) ? 0 : 1;
2279 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2280 &optval
, sizeof (optval
));
2288 optval
= XINT (val
);
2290 error ("Bad option value for %s", name
);
2291 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2292 &optval
, sizeof (optval
));
2296 #ifdef SO_BINDTODEVICE
2299 char devname
[IFNAMSIZ
+1];
2301 /* This is broken, at least in the Linux 2.4 kernel.
2302 To unbind, the arg must be a zero integer, not the empty string.
2303 This should work on all systems. KFS. 2003-09-23. */
2304 memset (devname
, 0, sizeof devname
);
2307 char *arg
= SSDATA (val
);
2308 int len
= min (strlen (arg
), IFNAMSIZ
);
2309 memcpy (devname
, arg
, len
);
2311 else if (!NILP (val
))
2312 error ("Bad option value for %s", name
);
2313 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2322 struct linger linger
;
2325 linger
.l_linger
= 0;
2327 linger
.l_linger
= XINT (val
);
2329 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2330 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2331 &linger
, sizeof (linger
));
2341 report_file_error ("Cannot set network option",
2342 Fcons (opt
, Fcons (val
, Qnil
)));
2343 return (1 << sopt
->optbit
);
2347 DEFUN ("set-network-process-option",
2348 Fset_network_process_option
, Sset_network_process_option
,
2350 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2351 See `make-network-process' for a list of options and values.
2352 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2353 OPTION is not a supported option, return nil instead; otherwise return t. */)
2354 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2357 struct Lisp_Process
*p
;
2359 CHECK_PROCESS (process
);
2360 p
= XPROCESS (process
);
2361 if (!NETCONN1_P (p
))
2362 error ("Process is not a network process");
2366 error ("Process is not running");
2368 if (set_socket_option (s
, option
, value
))
2370 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2374 if (NILP (no_error
))
2375 error ("Unknown or unsupported option");
2381 DEFUN ("serial-process-configure",
2382 Fserial_process_configure
,
2383 Sserial_process_configure
,
2385 doc
: /* Configure speed, bytesize, etc. of a serial process.
2387 Arguments are specified as keyword/argument pairs. Attributes that
2388 are not given are re-initialized from the process's current
2389 configuration (available via the function `process-contact') or set to
2390 reasonable default values. The following arguments are defined:
2396 -- Any of these arguments can be given to identify the process that is
2397 to be configured. If none of these arguments is given, the current
2398 buffer's process is used.
2400 :speed SPEED -- SPEED is the speed of the serial port in bits per
2401 second, also called baud rate. Any value can be given for SPEED, but
2402 most serial ports work only at a few defined values between 1200 and
2403 115200, with 9600 being the most common value. If SPEED is nil, the
2404 serial port is not configured any further, i.e., all other arguments
2405 are ignored. This may be useful for special serial ports such as
2406 Bluetooth-to-serial converters which can only be configured through AT
2407 commands. A value of nil for SPEED can be used only when passed
2408 through `make-serial-process' or `serial-term'.
2410 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2411 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2413 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2414 `odd' (use odd parity), or the symbol `even' (use even parity). If
2415 PARITY is not given, no parity is used.
2417 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2418 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2419 is not given or nil, 1 stopbit is used.
2421 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2422 flowcontrol to be used, which is either nil (don't use flowcontrol),
2423 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2424 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2425 flowcontrol is used.
2427 `serial-process-configure' is called by `make-serial-process' for the
2428 initial configuration of the serial port.
2432 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2434 \(serial-process-configure
2435 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2437 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2439 usage: (serial-process-configure &rest ARGS) */)
2440 (size_t nargs
, Lisp_Object
*args
)
2442 struct Lisp_Process
*p
;
2443 Lisp_Object contact
= Qnil
;
2444 Lisp_Object proc
= Qnil
;
2445 struct gcpro gcpro1
;
2447 contact
= Flist (nargs
, args
);
2450 proc
= Fplist_get (contact
, QCprocess
);
2452 proc
= Fplist_get (contact
, QCname
);
2454 proc
= Fplist_get (contact
, QCbuffer
);
2456 proc
= Fplist_get (contact
, QCport
);
2457 proc
= get_process (proc
);
2458 p
= XPROCESS (proc
);
2459 if (!EQ (p
->type
, Qserial
))
2460 error ("Not a serial process");
2462 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2468 serial_configure (p
, contact
);
2474 /* Used by make-serial-process to recover from errors. */
2476 make_serial_process_unwind (Lisp_Object proc
)
2478 if (!PROCESSP (proc
))
2480 remove_process (proc
);
2484 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2486 doc
: /* Create and return a serial port process.
2488 In Emacs, serial port connections are represented by process objects,
2489 so input and output work as for subprocesses, and `delete-process'
2490 closes a serial port connection. However, a serial process has no
2491 process id, it cannot be signaled, and the status codes are different
2492 from normal processes.
2494 `make-serial-process' creates a process and a buffer, on which you
2495 probably want to use `process-send-string'. Try \\[serial-term] for
2496 an interactive terminal. See below for examples.
2498 Arguments are specified as keyword/argument pairs. The following
2499 arguments are defined:
2501 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2502 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2503 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2504 the backslashes in strings).
2506 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2507 which is called by `make-serial-process'.
2509 :name NAME -- NAME is the name of the process. If NAME is not given,
2510 the value of PORT is used.
2512 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2513 with the process. Process output goes at the end of that buffer,
2514 unless you specify an output stream or filter function to handle the
2515 output. If BUFFER is not given, the value of NAME is used.
2517 :coding CODING -- If CODING is a symbol, it specifies the coding
2518 system used for both reading and writing for this process. If CODING
2519 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2520 ENCODING is used for writing.
2522 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2523 the process is running. If BOOL is not given, query before exiting.
2525 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2526 In the stopped state, a serial process does not accept incoming data,
2527 but you can send outgoing data. The stopped state is cleared by
2528 `continue-process' and set by `stop-process'.
2530 :filter FILTER -- Install FILTER as the process filter.
2532 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2534 :plist PLIST -- Install PLIST as the initial plist of the process.
2541 -- These arguments are handled by `serial-process-configure', which is
2542 called by `make-serial-process'.
2544 The original argument list, possibly modified by later configuration,
2545 is available via the function `process-contact'.
2549 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2551 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2553 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2555 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2557 usage: (make-serial-process &rest ARGS) */)
2558 (size_t nargs
, Lisp_Object
*args
)
2561 Lisp_Object proc
, contact
, port
;
2562 struct Lisp_Process
*p
;
2563 struct gcpro gcpro1
;
2564 Lisp_Object name
, buffer
;
2565 Lisp_Object tem
, val
;
2566 int specpdl_count
= -1;
2571 contact
= Flist (nargs
, args
);
2574 port
= Fplist_get (contact
, QCport
);
2576 error ("No port specified");
2577 CHECK_STRING (port
);
2579 if (NILP (Fplist_member (contact
, QCspeed
)))
2580 error (":speed not specified");
2581 if (!NILP (Fplist_get (contact
, QCspeed
)))
2582 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2584 name
= Fplist_get (contact
, QCname
);
2587 CHECK_STRING (name
);
2588 proc
= make_process (name
);
2589 specpdl_count
= SPECPDL_INDEX ();
2590 record_unwind_protect (make_serial_process_unwind
, proc
);
2591 p
= XPROCESS (proc
);
2593 fd
= serial_open (SSDATA (port
));
2596 if (fd
> max_process_desc
)
2597 max_process_desc
= fd
;
2598 chan_process
[fd
] = proc
;
2600 buffer
= Fplist_get (contact
, QCbuffer
);
2603 buffer
= Fget_buffer_create (buffer
);
2606 p
->childp
= contact
;
2607 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2609 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2610 p
->filter
= Fplist_get (contact
, QCfilter
);
2612 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2613 p
->kill_without_query
= 1;
2614 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2618 if (!EQ (p
->command
, Qt
))
2620 FD_SET (fd
, &input_wait_mask
);
2621 FD_SET (fd
, &non_keyboard_wait_mask
);
2624 if (BUFFERP (buffer
))
2626 set_marker_both (p
->mark
, buffer
,
2627 BUF_ZV (XBUFFER (buffer
)),
2628 BUF_ZV_BYTE (XBUFFER (buffer
)));
2631 tem
= Fplist_member (contact
, QCcoding
);
2632 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2638 val
= XCAR (XCDR (tem
));
2642 else if (!NILP (Vcoding_system_for_read
))
2643 val
= Vcoding_system_for_read
;
2644 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2645 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2647 p
->decode_coding_system
= val
;
2652 val
= XCAR (XCDR (tem
));
2656 else if (!NILP (Vcoding_system_for_write
))
2657 val
= Vcoding_system_for_write
;
2658 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2659 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2661 p
->encode_coding_system
= val
;
2663 setup_process_coding_systems (proc
);
2664 p
->decoding_buf
= empty_unibyte_string
;
2665 p
->decoding_carryover
= 0;
2666 p
->encoding_buf
= empty_unibyte_string
;
2667 p
->inherit_coding_system_flag
2668 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2670 Fserial_process_configure (nargs
, args
);
2672 specpdl_ptr
= specpdl
+ specpdl_count
;
2678 /* Create a network stream/datagram client/server process. Treated
2679 exactly like a normal process when reading and writing. Primary
2680 differences are in status display and process deletion. A network
2681 connection has no PID; you cannot signal it. All you can do is
2682 stop/continue it and deactivate/close it via delete-process */
2684 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2686 doc
: /* Create and return a network server or client process.
2688 In Emacs, network connections are represented by process objects, so
2689 input and output work as for subprocesses and `delete-process' closes
2690 a network connection. However, a network process has no process id,
2691 it cannot be signaled, and the status codes are different from normal
2694 Arguments are specified as keyword/argument pairs. The following
2695 arguments are defined:
2697 :name NAME -- NAME is name for process. It is modified if necessary
2700 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2701 with the process. Process output goes at end of that buffer, unless
2702 you specify an output stream or filter function to handle the output.
2703 BUFFER may be also nil, meaning that this process is not associated
2706 :host HOST -- HOST is name of the host to connect to, or its IP
2707 address. The symbol `local' specifies the local host. If specified
2708 for a server process, it must be a valid name or address for the local
2709 host, and only clients connecting to that address will be accepted.
2711 :service SERVICE -- SERVICE is name of the service desired, or an
2712 integer specifying a port number to connect to. If SERVICE is t,
2713 a random port number is selected for the server. (If Emacs was
2714 compiled with getaddrinfo, a port number can also be specified as a
2715 string, e.g. "80", as well as an integer. This is not portable.)
2717 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2718 stream type connection, `datagram' creates a datagram type connection,
2719 `seqpacket' creates a reliable datagram connection.
2721 :family FAMILY -- FAMILY is the address (and protocol) family for the
2722 service specified by HOST and SERVICE. The default (nil) is to use
2723 whatever address family (IPv4 or IPv6) that is defined for the host
2724 and port number specified by HOST and SERVICE. Other address families
2726 local -- for a local (i.e. UNIX) address specified by SERVICE.
2727 ipv4 -- use IPv4 address family only.
2728 ipv6 -- use IPv6 address family only.
2730 :local ADDRESS -- ADDRESS is the local address used for the connection.
2731 This parameter is ignored when opening a client process. When specified
2732 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2734 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2735 connection. This parameter is ignored when opening a stream server
2736 process. For a datagram server process, it specifies the initial
2737 setting of the remote datagram address. When specified for a client
2738 process, the FAMILY, HOST, and SERVICE args are ignored.
2740 The format of ADDRESS depends on the address family:
2741 - An IPv4 address is represented as an vector of integers [A B C D P]
2742 corresponding to numeric IP address A.B.C.D and port number P.
2743 - A local address is represented as a string with the address in the
2744 local address space.
2745 - An "unsupported family" address is represented by a cons (F . AV)
2746 where F is the family number and AV is a vector containing the socket
2747 address data with one element per address data byte. Do not rely on
2748 this format in portable code, as it may depend on implementation
2749 defined constants, data sizes, and data structure alignment.
2751 :coding CODING -- If CODING is a symbol, it specifies the coding
2752 system used for both reading and writing for this process. If CODING
2753 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2754 ENCODING is used for writing.
2756 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2757 return without waiting for the connection to complete; instead, the
2758 sentinel function will be called with second arg matching "open" (if
2759 successful) or "failed" when the connect completes. Default is to use
2760 a blocking connect (i.e. wait) for stream type connections.
2762 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2763 running when Emacs is exited.
2765 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2766 In the stopped state, a server process does not accept new
2767 connections, and a client process does not handle incoming traffic.
2768 The stopped state is cleared by `continue-process' and set by
2771 :filter FILTER -- Install FILTER as the process filter.
2773 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2774 process filter are multibyte, otherwise they are unibyte.
2775 If this keyword is not specified, the strings are multibyte if
2776 `default-enable-multibyte-characters' is non-nil.
2778 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2780 :log LOG -- Install LOG as the server process log function. This
2781 function is called when the server accepts a network connection from a
2782 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2783 is the server process, CLIENT is the new process for the connection,
2784 and MESSAGE is a string.
2786 :plist PLIST -- Install PLIST as the new process' initial plist.
2788 :server QLEN -- if QLEN is non-nil, create a server process for the
2789 specified FAMILY, SERVICE, and connection type (stream or datagram).
2790 If QLEN is an integer, it is used as the max. length of the server's
2791 pending connection queue (also known as the backlog); the default
2792 queue length is 5. Default is to create a client process.
2794 The following network options can be specified for this connection:
2796 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2797 :dontroute BOOL -- Only send to directly connected hosts.
2798 :keepalive BOOL -- Send keep-alive messages on network stream.
2799 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2800 :oobinline BOOL -- Place out-of-band data in receive data stream.
2801 :priority INT -- Set protocol defined priority for sent packets.
2802 :reuseaddr BOOL -- Allow reusing a recently used local address
2803 (this is allowed by default for a server process).
2804 :bindtodevice NAME -- bind to interface NAME. Using this may require
2805 special privileges on some systems.
2807 Consult the relevant system programmer's manual pages for more
2808 information on using these options.
2811 A server process will listen for and accept connections from clients.
2812 When a client connection is accepted, a new network process is created
2813 for the connection with the following parameters:
2815 - The client's process name is constructed by concatenating the server
2816 process' NAME and a client identification string.
2817 - If the FILTER argument is non-nil, the client process will not get a
2818 separate process buffer; otherwise, the client's process buffer is a newly
2819 created buffer named after the server process' BUFFER name or process
2820 NAME concatenated with the client identification string.
2821 - The connection type and the process filter and sentinel parameters are
2822 inherited from the server process' TYPE, FILTER and SENTINEL.
2823 - The client process' contact info is set according to the client's
2824 addressing information (typically an IP address and a port number).
2825 - The client process' plist is initialized from the server's plist.
2827 Notice that the FILTER and SENTINEL args are never used directly by
2828 the server process. Also, the BUFFER argument is not used directly by
2829 the server process, but via the optional :log function, accepted (and
2830 failed) connections may be logged in the server process' buffer.
2832 The original argument list, modified with the actual connection
2833 information, is available via the `process-contact' function.
2835 usage: (make-network-process &rest ARGS) */)
2836 (size_t nargs
, Lisp_Object
*args
)
2839 Lisp_Object contact
;
2840 struct Lisp_Process
*p
;
2841 #ifdef HAVE_GETADDRINFO
2842 struct addrinfo ai
, *res
, *lres
;
2843 struct addrinfo hints
;
2844 const char *portstring
;
2846 #else /* HAVE_GETADDRINFO */
2847 struct _emacs_addrinfo
2853 struct sockaddr
*ai_addr
;
2854 struct _emacs_addrinfo
*ai_next
;
2856 #endif /* HAVE_GETADDRINFO */
2857 struct sockaddr_in address_in
;
2858 #ifdef HAVE_LOCAL_SOCKETS
2859 struct sockaddr_un address_un
;
2864 int s
= -1, outch
, inch
;
2865 struct gcpro gcpro1
;
2866 int count
= SPECPDL_INDEX ();
2868 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2870 Lisp_Object name
, buffer
, host
, service
, address
;
2871 Lisp_Object filter
, sentinel
;
2872 int is_non_blocking_client
= 0;
2873 int is_server
= 0, backlog
= 5;
2880 /* Save arguments for process-contact and clone-process. */
2881 contact
= Flist (nargs
, args
);
2885 /* Ensure socket support is loaded if available. */
2886 init_winsock (TRUE
);
2889 /* :type TYPE (nil: stream, datagram */
2890 tem
= Fplist_get (contact
, QCtype
);
2892 socktype
= SOCK_STREAM
;
2893 #ifdef DATAGRAM_SOCKETS
2894 else if (EQ (tem
, Qdatagram
))
2895 socktype
= SOCK_DGRAM
;
2897 #ifdef HAVE_SEQPACKET
2898 else if (EQ (tem
, Qseqpacket
))
2899 socktype
= SOCK_SEQPACKET
;
2902 error ("Unsupported connection type");
2905 tem
= Fplist_get (contact
, QCserver
);
2908 /* Don't support network sockets when non-blocking mode is
2909 not available, since a blocked Emacs is not useful. */
2910 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
2911 error ("Network servers not supported");
2915 backlog
= XINT (tem
);
2919 /* Make QCaddress an alias for :local (server) or :remote (client). */
2920 QCaddress
= is_server
? QClocal
: QCremote
;
2923 if (!is_server
&& socktype
!= SOCK_DGRAM
2924 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2926 #ifndef NON_BLOCKING_CONNECT
2927 error ("Non-blocking connect not supported");
2929 is_non_blocking_client
= 1;
2933 name
= Fplist_get (contact
, QCname
);
2934 buffer
= Fplist_get (contact
, QCbuffer
);
2935 filter
= Fplist_get (contact
, QCfilter
);
2936 sentinel
= Fplist_get (contact
, QCsentinel
);
2938 CHECK_STRING (name
);
2940 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2941 ai
.ai_socktype
= socktype
;
2946 /* :local ADDRESS or :remote ADDRESS */
2947 address
= Fplist_get (contact
, QCaddress
);
2948 if (!NILP (address
))
2950 host
= service
= Qnil
;
2952 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2953 error ("Malformed :address");
2954 ai
.ai_family
= family
;
2955 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2956 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2960 /* :family FAMILY -- nil (for Inet), local, or integer. */
2961 tem
= Fplist_get (contact
, QCfamily
);
2964 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2970 #ifdef HAVE_LOCAL_SOCKETS
2971 else if (EQ (tem
, Qlocal
))
2975 else if (EQ (tem
, Qipv6
))
2978 else if (EQ (tem
, Qipv4
))
2980 else if (INTEGERP (tem
))
2981 family
= XINT (tem
);
2983 error ("Unknown address family");
2985 ai
.ai_family
= family
;
2987 /* :service SERVICE -- string, integer (port number), or t (random port). */
2988 service
= Fplist_get (contact
, QCservice
);
2990 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2991 host
= Fplist_get (contact
, QChost
);
2994 if (EQ (host
, Qlocal
))
2995 /* Depending on setup, "localhost" may map to different IPv4 and/or
2996 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2997 host
= build_string ("127.0.0.1");
2998 CHECK_STRING (host
);
3001 #ifdef HAVE_LOCAL_SOCKETS
3002 if (family
== AF_LOCAL
)
3006 message (":family local ignores the :host \"%s\" property",
3008 contact
= Fplist_put (contact
, QChost
, Qnil
);
3011 CHECK_STRING (service
);
3012 memset (&address_un
, 0, sizeof address_un
);
3013 address_un
.sun_family
= AF_LOCAL
;
3014 strncpy (address_un
.sun_path
, SSDATA (service
), sizeof address_un
.sun_path
);
3015 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3016 ai
.ai_addrlen
= sizeof address_un
;
3021 /* Slow down polling to every ten seconds.
3022 Some kernels have a bug which causes retrying connect to fail
3023 after a connect. Polling can interfere with gethostbyname too. */
3024 #ifdef POLL_FOR_INPUT
3025 if (socktype
!= SOCK_DGRAM
)
3027 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3028 bind_polling_period (10);
3032 #ifdef HAVE_GETADDRINFO
3033 /* If we have a host, use getaddrinfo to resolve both host and service.
3034 Otherwise, use getservbyname to lookup the service. */
3038 /* SERVICE can either be a string or int.
3039 Convert to a C string for later use by getaddrinfo. */
3040 if (EQ (service
, Qt
))
3042 else if (INTEGERP (service
))
3044 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3045 portstring
= portbuf
;
3049 CHECK_STRING (service
);
3050 portstring
= SSDATA (service
);
3055 memset (&hints
, 0, sizeof (hints
));
3057 hints
.ai_family
= family
;
3058 hints
.ai_socktype
= socktype
;
3059 hints
.ai_protocol
= 0;
3061 #ifdef HAVE_RES_INIT
3065 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3067 #ifdef HAVE_GAI_STRERROR
3068 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3070 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3076 #endif /* HAVE_GETADDRINFO */
3078 /* We end up here if getaddrinfo is not defined, or in case no hostname
3079 has been specified (e.g. for a local server process). */
3081 if (EQ (service
, Qt
))
3083 else if (INTEGERP (service
))
3084 port
= htons ((unsigned short) XINT (service
));
3087 struct servent
*svc_info
;
3088 CHECK_STRING (service
);
3089 svc_info
= getservbyname (SSDATA (service
),
3090 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3092 error ("Unknown service: %s", SDATA (service
));
3093 port
= svc_info
->s_port
;
3096 memset (&address_in
, 0, sizeof address_in
);
3097 address_in
.sin_family
= family
;
3098 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3099 address_in
.sin_port
= port
;
3101 #ifndef HAVE_GETADDRINFO
3104 struct hostent
*host_info_ptr
;
3106 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3107 as it may `hang' Emacs for a very long time. */
3111 #ifdef HAVE_RES_INIT
3115 host_info_ptr
= gethostbyname (SDATA (host
));
3120 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3121 host_info_ptr
->h_length
);
3122 family
= host_info_ptr
->h_addrtype
;
3123 address_in
.sin_family
= family
;
3126 /* Attempt to interpret host as numeric inet address */
3128 unsigned long numeric_addr
;
3129 numeric_addr
= inet_addr (SSDATA (host
));
3130 if (numeric_addr
== -1)
3131 error ("Unknown host \"%s\"", SDATA (host
));
3133 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3134 sizeof (address_in
.sin_addr
));
3138 #endif /* not HAVE_GETADDRINFO */
3140 ai
.ai_family
= family
;
3141 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3142 ai
.ai_addrlen
= sizeof address_in
;
3146 /* Do this in case we never enter the for-loop below. */
3147 count1
= SPECPDL_INDEX ();
3150 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3159 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3166 #ifdef DATAGRAM_SOCKETS
3167 if (!is_server
&& socktype
== SOCK_DGRAM
)
3169 #endif /* DATAGRAM_SOCKETS */
3171 #ifdef NON_BLOCKING_CONNECT
3172 if (is_non_blocking_client
)
3175 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3177 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3189 /* Make us close S if quit. */
3190 record_unwind_protect (close_file_unwind
, make_number (s
));
3192 /* Parse network options in the arg list.
3193 We simply ignore anything which isn't a known option (including other keywords).
3194 An error is signaled if setting a known option fails. */
3195 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3196 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3200 /* Configure as a server socket. */
3202 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3203 explicit :reuseaddr key to override this. */
3204 #ifdef HAVE_LOCAL_SOCKETS
3205 if (family
!= AF_LOCAL
)
3207 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3210 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3211 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3214 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3215 report_file_error ("Cannot bind server socket", Qnil
);
3217 #ifdef HAVE_GETSOCKNAME
3218 if (EQ (service
, Qt
))
3220 struct sockaddr_in sa1
;
3221 socklen_t len1
= sizeof (sa1
);
3222 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3224 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3225 service
= make_number (ntohs (sa1
.sin_port
));
3226 contact
= Fplist_put (contact
, QCservice
, service
);
3231 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3232 report_file_error ("Cannot listen on server socket", Qnil
);
3240 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3243 if (ret
== 0 || xerrno
== EISCONN
)
3245 /* The unwind-protect will be discarded afterwards.
3246 Likewise for immediate_quit. */
3250 #ifdef NON_BLOCKING_CONNECT
3252 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3256 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3263 if (xerrno
== EINTR
)
3265 /* Unlike most other syscalls connect() cannot be called
3266 again. (That would return EALREADY.) The proper way to
3267 wait for completion is select(). */
3275 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3282 report_file_error ("select failed", Qnil
);
3286 len
= sizeof xerrno
;
3287 eassert (FD_ISSET (s
, &fdset
));
3288 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3289 report_file_error ("getsockopt failed", Qnil
);
3291 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3295 #endif /* !WINDOWSNT */
3299 /* Discard the unwind protect closing S. */
3300 specpdl_ptr
= specpdl
+ count1
;
3305 if (xerrno
== EINTR
)
3312 #ifdef DATAGRAM_SOCKETS
3313 if (socktype
== SOCK_DGRAM
)
3315 if (datagram_address
[s
].sa
)
3317 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3318 datagram_address
[s
].len
= lres
->ai_addrlen
;
3322 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3323 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3326 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3327 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3328 conv_lisp_to_sockaddr (rfamily
, remote
,
3329 datagram_address
[s
].sa
, rlen
);
3333 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3336 contact
= Fplist_put (contact
, QCaddress
,
3337 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3338 #ifdef HAVE_GETSOCKNAME
3341 struct sockaddr_in sa1
;
3342 socklen_t len1
= sizeof (sa1
);
3343 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3344 contact
= Fplist_put (contact
, QClocal
,
3345 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3352 #ifdef HAVE_GETADDRINFO
3361 /* Discard the unwind protect for closing S, if any. */
3362 specpdl_ptr
= specpdl
+ count1
;
3364 /* Unwind bind_polling_period and request_sigio. */
3365 unbind_to (count
, Qnil
);
3369 /* If non-blocking got this far - and failed - assume non-blocking is
3370 not supported after all. This is probably a wrong assumption, but
3371 the normal blocking calls to open-network-stream handles this error
3373 if (is_non_blocking_client
)
3378 report_file_error ("make server process failed", contact
);
3380 report_file_error ("make client process failed", contact
);
3387 buffer
= Fget_buffer_create (buffer
);
3388 proc
= make_process (name
);
3390 chan_process
[inch
] = proc
;
3393 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3396 fcntl (inch
, F_SETFL
, O_NDELAY
);
3400 p
= XPROCESS (proc
);
3402 p
->childp
= contact
;
3403 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3407 p
->sentinel
= sentinel
;
3409 p
->log
= Fplist_get (contact
, QClog
);
3410 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3411 p
->kill_without_query
= 1;
3412 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3417 if (is_server
&& socktype
!= SOCK_DGRAM
)
3418 p
->status
= Qlisten
;
3420 /* Make the process marker point into the process buffer (if any). */
3421 if (BUFFERP (buffer
))
3422 set_marker_both (p
->mark
, buffer
,
3423 BUF_ZV (XBUFFER (buffer
)),
3424 BUF_ZV_BYTE (XBUFFER (buffer
)));
3426 #ifdef NON_BLOCKING_CONNECT
3427 if (is_non_blocking_client
)
3429 /* We may get here if connect did succeed immediately. However,
3430 in that case, we still need to signal this like a non-blocking
3432 p
->status
= Qconnect
;
3433 if (!FD_ISSET (inch
, &connect_wait_mask
))
3435 FD_SET (inch
, &connect_wait_mask
);
3436 FD_SET (inch
, &write_mask
);
3437 num_pending_connects
++;
3442 /* A server may have a client filter setting of Qt, but it must
3443 still listen for incoming connects unless it is stopped. */
3444 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3445 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3447 FD_SET (inch
, &input_wait_mask
);
3448 FD_SET (inch
, &non_keyboard_wait_mask
);
3451 if (inch
> max_process_desc
)
3452 max_process_desc
= inch
;
3454 tem
= Fplist_member (contact
, QCcoding
);
3455 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3456 tem
= Qnil
; /* No error message (too late!). */
3459 /* Setup coding systems for communicating with the network stream. */
3460 struct gcpro inner_gcpro1
;
3461 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3462 Lisp_Object coding_systems
= Qt
;
3463 Lisp_Object fargs
[5], val
;
3467 val
= XCAR (XCDR (tem
));
3471 else if (!NILP (Vcoding_system_for_read
))
3472 val
= Vcoding_system_for_read
;
3473 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3474 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3475 /* We dare not decode end-of-line format by setting VAL to
3476 Qraw_text, because the existing Emacs Lisp libraries
3477 assume that they receive bare code including a sequene of
3482 if (NILP (host
) || NILP (service
))
3483 coding_systems
= Qnil
;
3486 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3487 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3488 GCPRO1_VAR (proc
, inner_gcpro
);
3489 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3490 UNGCPRO_VAR (inner_gcpro
);
3492 if (CONSP (coding_systems
))
3493 val
= XCAR (coding_systems
);
3494 else if (CONSP (Vdefault_process_coding_system
))
3495 val
= XCAR (Vdefault_process_coding_system
);
3499 p
->decode_coding_system
= val
;
3503 val
= XCAR (XCDR (tem
));
3507 else if (!NILP (Vcoding_system_for_write
))
3508 val
= Vcoding_system_for_write
;
3509 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3513 if (EQ (coding_systems
, Qt
))
3515 if (NILP (host
) || NILP (service
))
3516 coding_systems
= Qnil
;
3519 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3520 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3521 GCPRO1_VAR (proc
, inner_gcpro
);
3522 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3523 UNGCPRO_VAR (inner_gcpro
);
3526 if (CONSP (coding_systems
))
3527 val
= XCDR (coding_systems
);
3528 else if (CONSP (Vdefault_process_coding_system
))
3529 val
= XCDR (Vdefault_process_coding_system
);
3533 p
->encode_coding_system
= val
;
3535 setup_process_coding_systems (proc
);
3537 p
->decoding_buf
= empty_unibyte_string
;
3538 p
->decoding_carryover
= 0;
3539 p
->encoding_buf
= empty_unibyte_string
;
3541 p
->inherit_coding_system_flag
3542 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3549 #if defined(HAVE_NET_IF_H)
3552 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3553 doc
: /* Return an alist of all network interfaces and their network address.
3554 Each element is a cons, the car of which is a string containing the
3555 interface name, and the cdr is the network address in internal
3556 format; see the description of ADDRESS in `make-network-process'. */)
3559 struct ifconf ifconf
;
3560 struct ifreq
*ifreqs
= NULL
;
3565 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3571 buf_size
= ifaces
* sizeof (ifreqs
[0]);
3572 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3579 ifconf
.ifc_len
= buf_size
;
3580 ifconf
.ifc_req
= ifreqs
;
3581 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3587 if (ifconf
.ifc_len
== buf_size
)
3591 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3594 while (--ifaces
>= 0)
3596 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3597 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3598 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3600 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3601 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3602 res
= Fcons (Fcons (build_string (namebuf
),
3603 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3604 sizeof (struct sockaddr
))),
3610 #endif /* SIOCGIFCONF */
3612 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3616 const char *flag_sym
;
3619 static const struct ifflag_def ifflag_table
[] = {
3623 #ifdef IFF_BROADCAST
3624 { IFF_BROADCAST
, "broadcast" },
3627 { IFF_DEBUG
, "debug" },
3630 { IFF_LOOPBACK
, "loopback" },
3632 #ifdef IFF_POINTOPOINT
3633 { IFF_POINTOPOINT
, "pointopoint" },
3636 { IFF_RUNNING
, "running" },
3639 { IFF_NOARP
, "noarp" },
3642 { IFF_PROMISC
, "promisc" },
3644 #ifdef IFF_NOTRAILERS
3645 { IFF_NOTRAILERS
, "notrailers" },
3648 { IFF_ALLMULTI
, "allmulti" },
3651 { IFF_MASTER
, "master" },
3654 { IFF_SLAVE
, "slave" },
3656 #ifdef IFF_MULTICAST
3657 { IFF_MULTICAST
, "multicast" },
3660 { IFF_PORTSEL
, "portsel" },
3662 #ifdef IFF_AUTOMEDIA
3663 { IFF_AUTOMEDIA
, "automedia" },
3666 { IFF_DYNAMIC
, "dynamic" },
3669 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3672 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3675 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3678 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3681 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3686 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3687 doc
: /* Return information about network interface named IFNAME.
3688 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3689 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3690 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3691 FLAGS is the current flags of the interface. */)
3692 (Lisp_Object ifname
)
3695 Lisp_Object res
= Qnil
;
3700 CHECK_STRING (ifname
);
3702 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3703 strncpy (rq
.ifr_name
, SSDATA (ifname
), sizeof (rq
.ifr_name
));
3705 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3710 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3711 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3713 int flags
= rq
.ifr_flags
;
3714 const struct ifflag_def
*fp
;
3718 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3720 if (flags
& fp
->flag_bit
)
3722 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3723 flags
-= fp
->flag_bit
;
3726 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3730 elt
= Fcons (make_number (fnum
), elt
);
3735 res
= Fcons (elt
, res
);
3738 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3739 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3741 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3742 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3746 for (n
= 0; n
< 6; n
++)
3747 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3748 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3751 res
= Fcons (elt
, res
);
3754 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3755 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3758 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3759 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3761 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3765 res
= Fcons (elt
, res
);
3768 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3769 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3772 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3775 res
= Fcons (elt
, res
);
3778 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3779 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3782 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3785 res
= Fcons (elt
, res
);
3789 return any
? res
: Qnil
;
3792 #endif /* defined(HAVE_NET_IF_H) */
3794 /* Turn off input and output for process PROC. */
3797 deactivate_process (Lisp_Object proc
)
3799 register int inchannel
, outchannel
;
3800 register struct Lisp_Process
*p
= XPROCESS (proc
);
3802 inchannel
= p
->infd
;
3803 outchannel
= p
->outfd
;
3805 #ifdef ADAPTIVE_READ_BUFFERING
3806 if (p
->read_output_delay
> 0)
3808 if (--process_output_delay_count
< 0)
3809 process_output_delay_count
= 0;
3810 p
->read_output_delay
= 0;
3811 p
->read_output_skip
= 0;
3817 /* Beware SIGCHLD hereabouts. */
3818 flush_pending_output (inchannel
);
3819 emacs_close (inchannel
);
3820 if (outchannel
>= 0 && outchannel
!= inchannel
)
3821 emacs_close (outchannel
);
3825 #ifdef DATAGRAM_SOCKETS
3826 if (DATAGRAM_CHAN_P (inchannel
))
3828 xfree (datagram_address
[inchannel
].sa
);
3829 datagram_address
[inchannel
].sa
= 0;
3830 datagram_address
[inchannel
].len
= 0;
3833 chan_process
[inchannel
] = Qnil
;
3834 FD_CLR (inchannel
, &input_wait_mask
);
3835 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3836 #ifdef NON_BLOCKING_CONNECT
3837 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3839 FD_CLR (inchannel
, &connect_wait_mask
);
3840 FD_CLR (inchannel
, &write_mask
);
3841 if (--num_pending_connects
< 0)
3845 if (inchannel
== max_process_desc
)
3848 /* We just closed the highest-numbered process input descriptor,
3849 so recompute the highest-numbered one now. */
3850 max_process_desc
= 0;
3851 for (i
= 0; i
< MAXDESC
; i
++)
3852 if (!NILP (chan_process
[i
]))
3853 max_process_desc
= i
;
3859 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3861 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3862 It is read into the process' buffers or given to their filter functions.
3863 Non-nil arg PROCESS means do not return until some output has been received
3866 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3867 and milliseconds to wait; return after that much time whether or not
3868 there is any subprocess output. If SECONDS is a floating point number,
3869 it specifies a fractional number of seconds to wait.
3870 The MILLISEC argument is obsolete and should be avoided.
3872 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3873 from PROCESS, suspending reading output from other processes.
3874 If JUST-THIS-ONE is an integer, don't run any timers either.
3875 Return non-nil if we received any output before the timeout expired. */)
3876 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3878 int secs
, usecs
= 0;
3880 if (! NILP (process
))
3881 CHECK_PROCESS (process
);
3883 just_this_one
= Qnil
;
3885 if (!NILP (millisec
))
3886 { /* Obsolete calling convention using integers rather than floats. */
3887 CHECK_NUMBER (millisec
);
3889 seconds
= make_float (XINT (millisec
) / 1000.0);
3892 CHECK_NUMBER (seconds
);
3893 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3897 if (!NILP (seconds
))
3899 if (INTEGERP (seconds
))
3900 secs
= XINT (seconds
);
3901 else if (FLOATP (seconds
))
3903 double timeout
= XFLOAT_DATA (seconds
);
3904 secs
= (int) timeout
;
3905 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3908 wrong_type_argument (Qnumberp
, seconds
);
3910 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3911 secs
= -1, usecs
= 0;
3914 secs
= NILP (process
) ? -1 : 0;
3917 (wait_reading_process_output (secs
, usecs
, 0, 0,
3919 !NILP (process
) ? XPROCESS (process
) : NULL
,
3920 NILP (just_this_one
) ? 0 :
3921 !INTEGERP (just_this_one
) ? 1 : -1)
3925 /* Accept a connection for server process SERVER on CHANNEL. */
3927 static int connect_counter
= 0;
3930 server_accept_connection (Lisp_Object server
, int channel
)
3932 Lisp_Object proc
, caller
, name
, buffer
;
3933 Lisp_Object contact
, host
, service
;
3934 struct Lisp_Process
*ps
= XPROCESS (server
);
3935 struct Lisp_Process
*p
;
3939 struct sockaddr_in in
;
3941 struct sockaddr_in6 in6
;
3943 #ifdef HAVE_LOCAL_SOCKETS
3944 struct sockaddr_un un
;
3947 socklen_t len
= sizeof saddr
;
3949 s
= accept (channel
, &saddr
.sa
, &len
);
3958 if (code
== EWOULDBLOCK
)
3962 if (!NILP (ps
->log
))
3963 call3 (ps
->log
, server
, Qnil
,
3964 concat3 (build_string ("accept failed with code"),
3965 Fnumber_to_string (make_number (code
)),
3966 build_string ("\n")));
3972 /* Setup a new process to handle the connection. */
3974 /* Generate a unique identification of the caller, and build contact
3975 information for this process. */
3978 switch (saddr
.sa
.sa_family
)
3982 Lisp_Object args
[5];
3983 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
3984 args
[0] = build_string ("%d.%d.%d.%d");
3985 args
[1] = make_number (*ip
++);
3986 args
[2] = make_number (*ip
++);
3987 args
[3] = make_number (*ip
++);
3988 args
[4] = make_number (*ip
++);
3989 host
= Fformat (5, args
);
3990 service
= make_number (ntohs (saddr
.in
.sin_port
));
3992 args
[0] = build_string (" <%s:%d>");
3995 caller
= Fformat (3, args
);
4002 Lisp_Object args
[9];
4003 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4005 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4006 for (i
= 0; i
< 8; i
++)
4007 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4008 host
= Fformat (9, args
);
4009 service
= make_number (ntohs (saddr
.in
.sin_port
));
4011 args
[0] = build_string (" <[%s]:%d>");
4014 caller
= Fformat (3, args
);
4019 #ifdef HAVE_LOCAL_SOCKETS
4023 caller
= Fnumber_to_string (make_number (connect_counter
));
4024 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4028 /* Create a new buffer name for this process if it doesn't have a
4029 filter. The new buffer name is based on the buffer name or
4030 process name of the server process concatenated with the caller
4033 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4037 buffer
= ps
->buffer
;
4039 buffer
= Fbuffer_name (buffer
);
4044 buffer
= concat2 (buffer
, caller
);
4045 buffer
= Fget_buffer_create (buffer
);
4049 /* Generate a unique name for the new server process. Combine the
4050 server process name with the caller identification. */
4052 name
= concat2 (ps
->name
, caller
);
4053 proc
= make_process (name
);
4055 chan_process
[s
] = proc
;
4058 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4061 fcntl (s
, F_SETFL
, O_NDELAY
);
4065 p
= XPROCESS (proc
);
4067 /* Build new contact information for this setup. */
4068 contact
= Fcopy_sequence (ps
->childp
);
4069 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4070 contact
= Fplist_put (contact
, QChost
, host
);
4071 if (!NILP (service
))
4072 contact
= Fplist_put (contact
, QCservice
, service
);
4073 contact
= Fplist_put (contact
, QCremote
,
4074 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4075 #ifdef HAVE_GETSOCKNAME
4077 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4078 contact
= Fplist_put (contact
, QClocal
,
4079 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4082 p
->childp
= contact
;
4083 p
->plist
= Fcopy_sequence (ps
->plist
);
4087 p
->sentinel
= ps
->sentinel
;
4088 p
->filter
= ps
->filter
;
4095 /* Client processes for accepted connections are not stopped initially. */
4096 if (!EQ (p
->filter
, Qt
))
4098 FD_SET (s
, &input_wait_mask
);
4099 FD_SET (s
, &non_keyboard_wait_mask
);
4102 if (s
> max_process_desc
)
4103 max_process_desc
= s
;
4105 /* Setup coding system for new process based on server process.
4106 This seems to be the proper thing to do, as the coding system
4107 of the new process should reflect the settings at the time the
4108 server socket was opened; not the current settings. */
4110 p
->decode_coding_system
= ps
->decode_coding_system
;
4111 p
->encode_coding_system
= ps
->encode_coding_system
;
4112 setup_process_coding_systems (proc
);
4114 p
->decoding_buf
= empty_unibyte_string
;
4115 p
->decoding_carryover
= 0;
4116 p
->encoding_buf
= empty_unibyte_string
;
4118 p
->inherit_coding_system_flag
4119 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4121 if (!NILP (ps
->log
))
4122 call3 (ps
->log
, server
, proc
,
4123 concat3 (build_string ("accept from "),
4124 (STRINGP (host
) ? host
: build_string ("-")),
4125 build_string ("\n")));
4127 if (!NILP (p
->sentinel
))
4128 exec_sentinel (proc
,
4129 concat3 (build_string ("open from "),
4130 (STRINGP (host
) ? host
: build_string ("-")),
4131 build_string ("\n")));
4134 /* This variable is different from waiting_for_input in keyboard.c.
4135 It is used to communicate to a lisp process-filter/sentinel (via the
4136 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4137 for user-input when that process-filter was called.
4138 waiting_for_input cannot be used as that is by definition 0 when
4139 lisp code is being evalled.
4140 This is also used in record_asynch_buffer_change.
4141 For that purpose, this must be 0
4142 when not inside wait_reading_process_output. */
4143 static int waiting_for_user_input_p
;
4146 wait_reading_process_output_unwind (Lisp_Object data
)
4148 waiting_for_user_input_p
= XINT (data
);
4152 /* This is here so breakpoints can be put on it. */
4154 wait_reading_process_output_1 (void)
4158 /* Use a wrapper around select to work around a bug in gdb 5.3.
4159 Normally, the wrapper is optimized away by inlining.
4161 If emacs is stopped inside select, the gdb backtrace doesn't
4162 show the function which called select, so it is practically
4163 impossible to step through wait_reading_process_output. */
4167 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4169 return select (n
, rfd
, wfd
, xfd
, tmo
);
4171 #define select select_wrapper
4174 /* Read and dispose of subprocess output while waiting for timeout to
4175 elapse and/or keyboard input to be available.
4178 timeout in seconds, or
4179 zero for no limit, or
4180 -1 means gobble data immediately available but don't wait for any.
4183 an additional duration to wait, measured in microseconds.
4184 If this is nonzero and time_limit is 0, then the timeout
4185 consists of MICROSECS only.
4187 READ_KBD is a lisp value:
4188 0 to ignore keyboard input, or
4189 1 to return when input is available, or
4190 -1 meaning caller will actually read the input, so don't throw to
4191 the quit handler, or
4193 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4194 output that arrives.
4196 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4197 (and gobble terminal input into the buffer if any arrives).
4199 If WAIT_PROC is specified, wait until something arrives from that
4200 process. The return value is true if we read some input from
4203 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4204 (suspending output from other processes). A negative value
4205 means don't run any timers either.
4207 If WAIT_PROC is specified, then the function returns true if we
4208 received input from that process before the timeout elapsed.
4209 Otherwise, return true if we received input from any process. */
4212 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4214 Lisp_Object wait_for_cell
,
4215 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4217 register int channel
, nfds
;
4218 SELECT_TYPE Available
;
4219 SELECT_TYPE Writeok
;
4221 int check_delay
, no_avail
;
4224 EMACS_TIME timeout
, end_time
;
4225 int wait_channel
= -1;
4226 int got_some_input
= 0;
4227 int count
= SPECPDL_INDEX ();
4229 FD_ZERO (&Available
);
4232 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4233 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4234 message ("Blocking call to accept-process-output with quit inhibited!!");
4236 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4237 if (wait_proc
!= NULL
)
4238 wait_channel
= wait_proc
->infd
;
4240 record_unwind_protect (wait_reading_process_output_unwind
,
4241 make_number (waiting_for_user_input_p
));
4242 waiting_for_user_input_p
= read_kbd
;
4244 /* Since we may need to wait several times,
4245 compute the absolute time to return at. */
4246 if (time_limit
|| microsecs
)
4248 EMACS_GET_TIME (end_time
);
4249 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4250 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4255 int timeout_reduced_for_timers
= 0;
4257 /* If calling from keyboard input, do not quit
4258 since we want to return C-g as an input character.
4259 Otherwise, do pending quit if requested. */
4264 process_pending_signals ();
4267 /* Exit now if the cell we're waiting for became non-nil. */
4268 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4271 /* Compute time from now till when time limit is up */
4272 /* Exit if already run out */
4273 if (time_limit
== -1)
4275 /* -1 specified for timeout means
4276 gobble output available now
4277 but don't wait at all. */
4279 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4281 else if (time_limit
|| microsecs
)
4283 EMACS_GET_TIME (timeout
);
4284 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4285 if (EMACS_TIME_NEG_P (timeout
))
4290 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4293 /* Normally we run timers here.
4294 But not if wait_for_cell; in those cases,
4295 the wait is supposed to be short,
4296 and those callers cannot handle running arbitrary Lisp code here. */
4297 if (NILP (wait_for_cell
)
4298 && just_wait_proc
>= 0)
4300 EMACS_TIME timer_delay
;
4304 int old_timers_run
= timers_run
;
4305 struct buffer
*old_buffer
= current_buffer
;
4306 Lisp_Object old_window
= selected_window
;
4308 timer_delay
= timer_check ();
4310 /* If a timer has run, this might have changed buffers
4311 an alike. Make read_key_sequence aware of that. */
4312 if (timers_run
!= old_timers_run
4313 && (old_buffer
!= current_buffer
4314 || !EQ (old_window
, selected_window
))
4315 && waiting_for_user_input_p
== -1)
4316 record_asynch_buffer_change ();
4318 if (timers_run
!= old_timers_run
&& do_display
)
4319 /* We must retry, since a timer may have requeued itself
4320 and that could alter the time_delay. */
4321 redisplay_preserve_echo_area (9);
4325 while (!detect_input_pending ());
4327 /* If there is unread keyboard input, also return. */
4329 && requeued_events_pending_p ())
4332 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4334 EMACS_TIME difference
;
4335 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4336 if (EMACS_TIME_NEG_P (difference
))
4338 timeout
= timer_delay
;
4339 timeout_reduced_for_timers
= 1;
4342 /* If time_limit is -1, we are not going to wait at all. */
4343 else if (time_limit
!= -1)
4345 /* This is so a breakpoint can be put here. */
4346 wait_reading_process_output_1 ();
4350 /* Cause C-g and alarm signals to take immediate action,
4351 and cause input available signals to zero out timeout.
4353 It is important that we do this before checking for process
4354 activity. If we get a SIGCHLD after the explicit checks for
4355 process activity, timeout is the only way we will know. */
4357 set_waiting_for_input (&timeout
);
4359 /* If status of something has changed, and no input is
4360 available, notify the user of the change right away. After
4361 this explicit check, we'll let the SIGCHLD handler zap
4362 timeout to get our attention. */
4363 if (update_tick
!= process_tick
)
4368 if (kbd_on_hold_p ())
4371 Atemp
= input_wait_mask
;
4374 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4375 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4377 #ifdef NON_BLOCKING_CONNECT
4378 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4382 (SELECT_TYPE
*)0, &timeout
)
4385 /* It's okay for us to do this and then continue with
4386 the loop, since timeout has already been zeroed out. */
4387 clear_waiting_for_input ();
4388 status_notify (NULL
);
4389 if (do_display
) redisplay_preserve_echo_area (13);
4393 /* Don't wait for output from a non-running process. Just
4394 read whatever data has already been received. */
4395 if (wait_proc
&& wait_proc
->raw_status_new
)
4396 update_status (wait_proc
);
4398 && ! EQ (wait_proc
->status
, Qrun
)
4399 && ! EQ (wait_proc
->status
, Qconnect
))
4401 int nread
, total_nread
= 0;
4403 clear_waiting_for_input ();
4404 XSETPROCESS (proc
, wait_proc
);
4406 /* Read data from the process, until we exhaust it. */
4407 while (wait_proc
->infd
>= 0)
4409 nread
= read_process_output (proc
, wait_proc
->infd
);
4416 total_nread
+= nread
;
4420 else if (nread
== -1 && EIO
== errno
)
4424 else if (nread
== -1 && EAGAIN
== errno
)
4428 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4432 if (total_nread
> 0 && do_display
)
4433 redisplay_preserve_echo_area (10);
4438 /* Wait till there is something to do */
4440 if (wait_proc
&& just_wait_proc
)
4442 if (wait_proc
->infd
< 0) /* Terminated */
4444 FD_SET (wait_proc
->infd
, &Available
);
4448 else if (!NILP (wait_for_cell
))
4450 Available
= non_process_wait_mask
;
4457 Available
= non_keyboard_wait_mask
;
4459 Available
= input_wait_mask
;
4460 Writeok
= write_mask
;
4461 #ifdef SELECT_CANT_DO_WRITE_MASK
4466 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4469 /* If frame size has changed or the window is newly mapped,
4470 redisplay now, before we start to wait. There is a race
4471 condition here; if a SIGIO arrives between now and the select
4472 and indicates that a frame is trashed, the select may block
4473 displaying a trashed screen. */
4474 if (frame_garbaged
&& do_display
)
4476 clear_waiting_for_input ();
4477 redisplay_preserve_echo_area (11);
4479 set_waiting_for_input (&timeout
);
4483 if (read_kbd
&& detect_input_pending ())
4491 #ifdef ADAPTIVE_READ_BUFFERING
4492 /* Set the timeout for adaptive read buffering if any
4493 process has non-zero read_output_skip and non-zero
4494 read_output_delay, and we are not reading output for a
4495 specific wait_channel. It is not executed if
4496 Vprocess_adaptive_read_buffering is nil. */
4497 if (process_output_skip
&& check_delay
> 0)
4499 int usecs
= EMACS_USECS (timeout
);
4500 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4501 usecs
= READ_OUTPUT_DELAY_MAX
;
4502 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4504 proc
= chan_process
[channel
];
4507 /* Find minimum non-zero read_output_delay among the
4508 processes with non-zero read_output_skip. */
4509 if (XPROCESS (proc
)->read_output_delay
> 0)
4512 if (!XPROCESS (proc
)->read_output_skip
)
4514 FD_CLR (channel
, &Available
);
4515 XPROCESS (proc
)->read_output_skip
= 0;
4516 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4517 usecs
= XPROCESS (proc
)->read_output_delay
;
4520 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4521 process_output_skip
= 0;
4524 #if defined (USE_GTK) || defined (HAVE_GCONF)
4526 #elif defined (HAVE_NS)
4531 (max (max_process_desc
, max_input_desc
) + 1,
4533 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4534 (SELECT_TYPE
*)0, &timeout
);
4539 /* Make C-g and alarm signals set flags again */
4540 clear_waiting_for_input ();
4542 /* If we woke up due to SIGWINCH, actually change size now. */
4543 do_pending_window_change (0);
4545 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4546 /* We wanted the full specified time, so return now. */
4550 if (xerrno
== EINTR
)
4552 else if (xerrno
== EBADF
)
4555 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4556 the child's closure of the pts gives the parent a SIGHUP, and
4557 the ptc file descriptor is automatically closed,
4558 yielding EBADF here or at select() call above.
4559 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4560 in m/ibmrt-aix.h), and here we just ignore the select error.
4561 Cleanup occurs c/o status_notify after SIGCLD. */
4562 no_avail
= 1; /* Cannot depend on values returned */
4568 error ("select error: %s", emacs_strerror (xerrno
));
4573 FD_ZERO (&Available
);
4577 #if 0 /* When polling is used, interrupt_input is 0,
4578 so get_input_pending should read the input.
4579 So this should not be needed. */
4580 /* If we are using polling for input,
4581 and we see input available, make it get read now.
4582 Otherwise it might not actually get read for a second.
4583 And on hpux, since we turn off polling in wait_reading_process_output,
4584 it might never get read at all if we don't spend much time
4585 outside of wait_reading_process_output. */
4586 if (read_kbd
&& interrupt_input
4587 && keyboard_bit_set (&Available
)
4588 && input_polling_used ())
4589 kill (getpid (), SIGALRM
);
4592 /* Check for keyboard input */
4593 /* If there is any, return immediately
4594 to give it higher priority than subprocesses */
4598 int old_timers_run
= timers_run
;
4599 struct buffer
*old_buffer
= current_buffer
;
4600 Lisp_Object old_window
= selected_window
;
4603 if (detect_input_pending_run_timers (do_display
))
4605 swallow_events (do_display
);
4606 if (detect_input_pending_run_timers (do_display
))
4610 /* If a timer has run, this might have changed buffers
4611 an alike. Make read_key_sequence aware of that. */
4612 if (timers_run
!= old_timers_run
4613 && waiting_for_user_input_p
== -1
4614 && (old_buffer
!= current_buffer
4615 || !EQ (old_window
, selected_window
)))
4616 record_asynch_buffer_change ();
4622 /* If there is unread keyboard input, also return. */
4624 && requeued_events_pending_p ())
4627 /* If we are not checking for keyboard input now,
4628 do process events (but don't run any timers).
4629 This is so that X events will be processed.
4630 Otherwise they may have to wait until polling takes place.
4631 That would causes delays in pasting selections, for example.
4633 (We used to do this only if wait_for_cell.) */
4634 if (read_kbd
== 0 && detect_input_pending ())
4636 swallow_events (do_display
);
4637 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4638 if (detect_input_pending ())
4643 /* Exit now if the cell we're waiting for became non-nil. */
4644 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4648 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4649 go read it. This can happen with X on BSD after logging out.
4650 In that case, there really is no input and no SIGIO,
4651 but select says there is input. */
4653 if (read_kbd
&& interrupt_input
4654 && keyboard_bit_set (&Available
) && ! noninteractive
)
4655 kill (getpid (), SIGIO
);
4659 got_some_input
|= nfds
> 0;
4661 /* If checking input just got us a size-change event from X,
4662 obey it now if we should. */
4663 if (read_kbd
|| ! NILP (wait_for_cell
))
4664 do_pending_window_change (0);
4666 /* Check for data from a process. */
4667 if (no_avail
|| nfds
== 0)
4670 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4672 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4673 if (FD_ISSET (channel
, &Available
)
4675 && (d
->condition
& FOR_READ
) != 0)
4676 d
->func (channel
, d
->data
, 1);
4677 if (FD_ISSET (channel
, &write_mask
)
4679 && (d
->condition
& FOR_WRITE
) != 0)
4680 d
->func (channel
, d
->data
, 0);
4683 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4685 if (FD_ISSET (channel
, &Available
)
4686 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4687 && !FD_ISSET (channel
, &non_process_wait_mask
))
4691 /* If waiting for this channel, arrange to return as
4692 soon as no more input to be processed. No more
4694 if (wait_channel
== channel
)
4700 proc
= chan_process
[channel
];
4704 /* If this is a server stream socket, accept connection. */
4705 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4707 server_accept_connection (proc
, channel
);
4711 /* Read data from the process, starting with our
4712 buffered-ahead character if we have one. */
4714 nread
= read_process_output (proc
, channel
);
4717 /* Since read_process_output can run a filter,
4718 which can call accept-process-output,
4719 don't try to read from any other processes
4720 before doing the select again. */
4721 FD_ZERO (&Available
);
4724 redisplay_preserve_echo_area (12);
4727 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4730 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4731 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4733 else if (nread
== -1 && errno
== EAGAIN
)
4737 else if (nread
== -1 && errno
== EAGAIN
)
4739 /* Note that we cannot distinguish between no input
4740 available now and a closed pipe.
4741 With luck, a closed pipe will be accompanied by
4742 subprocess termination and SIGCHLD. */
4743 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4745 #endif /* O_NDELAY */
4746 #endif /* O_NONBLOCK */
4748 /* On some OSs with ptys, when the process on one end of
4749 a pty exits, the other end gets an error reading with
4750 errno = EIO instead of getting an EOF (0 bytes read).
4751 Therefore, if we get an error reading and errno =
4752 EIO, just continue, because the child process has
4753 exited and should clean itself up soon (e.g. when we
4756 However, it has been known to happen that the SIGCHLD
4757 got lost. So raise the signal again just in case.
4759 else if (nread
== -1 && errno
== EIO
)
4761 /* Clear the descriptor now, so we only raise the
4762 signal once. Don't do this if `process' is only
4764 if (XPROCESS (proc
)->pid
!= -2)
4766 FD_CLR (channel
, &input_wait_mask
);
4767 FD_CLR (channel
, &non_keyboard_wait_mask
);
4769 kill (getpid (), SIGCHLD
);
4772 #endif /* HAVE_PTYS */
4773 /* If we can detect process termination, don't consider the process
4774 gone just because its pipe is closed. */
4776 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4781 /* Preserve status of processes already terminated. */
4782 XPROCESS (proc
)->tick
= ++process_tick
;
4783 deactivate_process (proc
);
4784 if (XPROCESS (proc
)->raw_status_new
)
4785 update_status (XPROCESS (proc
));
4786 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4787 XPROCESS (proc
)->status
4788 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4791 #ifdef NON_BLOCKING_CONNECT
4792 if (FD_ISSET (channel
, &Writeok
)
4793 && FD_ISSET (channel
, &connect_wait_mask
))
4795 struct Lisp_Process
*p
;
4797 FD_CLR (channel
, &connect_wait_mask
);
4798 FD_CLR (channel
, &write_mask
);
4799 if (--num_pending_connects
< 0)
4802 proc
= chan_process
[channel
];
4806 p
= XPROCESS (proc
);
4809 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4810 So only use it on systems where it is known to work. */
4812 socklen_t xlen
= sizeof (xerrno
);
4813 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4818 struct sockaddr pname
;
4819 int pnamelen
= sizeof (pname
);
4821 /* If connection failed, getpeername will fail. */
4823 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4825 /* Obtain connect failure code through error slippage. */
4828 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4835 p
->tick
= ++process_tick
;
4836 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4837 deactivate_process (proc
);
4842 /* Execute the sentinel here. If we had relied on
4843 status_notify to do it later, it will read input
4844 from the process before calling the sentinel. */
4845 exec_sentinel (proc
, build_string ("open\n"));
4846 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4848 FD_SET (p
->infd
, &input_wait_mask
);
4849 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4853 #endif /* NON_BLOCKING_CONNECT */
4854 } /* end for each file descriptor */
4855 } /* end while exit conditions not met */
4857 unbind_to (count
, Qnil
);
4859 /* If calling from keyboard input, do not quit
4860 since we want to return C-g as an input character.
4861 Otherwise, do pending quit if requested. */
4864 /* Prevent input_pending from remaining set if we quit. */
4865 clear_input_pending ();
4869 return got_some_input
;
4872 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4875 read_process_output_call (Lisp_Object fun_and_args
)
4877 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4881 read_process_output_error_handler (Lisp_Object error_val
)
4883 cmd_error_internal (error_val
, "error in process filter: ");
4885 update_echo_area ();
4886 Fsleep_for (make_number (2), Qnil
);
4890 /* Read pending output from the process channel,
4891 starting with our buffered-ahead character if we have one.
4892 Yield number of decoded characters read.
4894 This function reads at most 4096 characters.
4895 If you want to read all available subprocess output,
4896 you must call it repeatedly until it returns zero.
4898 The characters read are decoded according to PROC's coding-system
4902 read_process_output (Lisp_Object proc
, register int channel
)
4904 register ssize_t nbytes
;
4906 register Lisp_Object outstream
;
4907 register struct Lisp_Process
*p
= XPROCESS (proc
);
4908 register EMACS_INT opoint
;
4909 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4910 int carryover
= p
->decoding_carryover
;
4912 int count
= SPECPDL_INDEX ();
4913 Lisp_Object odeactivate
;
4915 chars
= (char *) alloca (carryover
+ readmax
);
4917 /* See the comment above. */
4918 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4920 #ifdef DATAGRAM_SOCKETS
4921 /* We have a working select, so proc_buffered_char is always -1. */
4922 if (DATAGRAM_CHAN_P (channel
))
4924 socklen_t len
= datagram_address
[channel
].len
;
4925 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4926 0, datagram_address
[channel
].sa
, &len
);
4931 int buffered
= 0 <= proc_buffered_char
[channel
];
4934 chars
[carryover
] = proc_buffered_char
[channel
];
4935 proc_buffered_char
[channel
] = -1;
4938 if (XPROCESS (proc
)->gnutls_p
)
4939 nbytes
= emacs_gnutls_read (channel
, XPROCESS (proc
),
4940 chars
+ carryover
+ buffered
,
4941 readmax
- buffered
);
4944 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
4945 readmax
- buffered
);
4946 #ifdef ADAPTIVE_READ_BUFFERING
4947 if (nbytes
> 0 && p
->adaptive_read_buffering
)
4949 int delay
= p
->read_output_delay
;
4952 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4955 process_output_delay_count
++;
4956 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
4959 else if (delay
> 0 && nbytes
== readmax
- buffered
)
4961 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
4963 process_output_delay_count
--;
4965 p
->read_output_delay
= delay
;
4968 p
->read_output_skip
= 1;
4969 process_output_skip
= 1;
4974 nbytes
+= buffered
&& nbytes
<= 0;
4977 p
->decoding_carryover
= 0;
4979 /* At this point, NBYTES holds number of bytes just received
4980 (including the one in proc_buffered_char[channel]). */
4983 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
4985 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
4988 /* Now set NBYTES how many bytes we must decode. */
4989 nbytes
+= carryover
;
4991 odeactivate
= Vdeactivate_mark
;
4992 /* There's no good reason to let process filters change the current
4993 buffer, and many callers of accept-process-output, sit-for, and
4994 friends don't expect current-buffer to be changed from under them. */
4995 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
4997 /* Read and dispose of the process output. */
4998 outstream
= p
->filter
;
4999 if (!NILP (outstream
))
5002 int outer_running_asynch_code
= running_asynch_code
;
5003 int waiting
= waiting_for_user_input_p
;
5005 /* No need to gcpro these, because all we do with them later
5006 is test them for EQness, and none of them should be a string. */
5008 Lisp_Object obuffer
, okeymap
;
5009 XSETBUFFER (obuffer
, current_buffer
);
5010 okeymap
= BVAR (current_buffer
, keymap
);
5013 /* We inhibit quit here instead of just catching it so that
5014 hitting ^G when a filter happens to be running won't screw
5016 specbind (Qinhibit_quit
, Qt
);
5017 specbind (Qlast_nonmenu_event
, Qt
);
5019 /* In case we get recursively called,
5020 and we already saved the match data nonrecursively,
5021 save the same match data in safely recursive fashion. */
5022 if (outer_running_asynch_code
)
5025 /* Don't clobber the CURRENT match data, either! */
5026 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5027 restore_search_regs ();
5028 record_unwind_save_match_data ();
5029 Fset_match_data (tem
, Qt
);
5032 /* For speed, if a search happens within this code,
5033 save the match data in a special nonrecursive fashion. */
5034 running_asynch_code
= 1;
5036 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5037 text
= coding
->dst_object
;
5038 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5039 /* A new coding system might be found. */
5040 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5042 p
->decode_coding_system
= Vlast_coding_system_used
;
5044 /* Don't call setup_coding_system for
5045 proc_decode_coding_system[channel] here. It is done in
5046 detect_coding called via decode_coding above. */
5048 /* If a coding system for encoding is not yet decided, we set
5049 it as the same as coding-system for decoding.
5051 But, before doing that we must check if
5052 proc_encode_coding_system[p->outfd] surely points to a
5053 valid memory because p->outfd will be changed once EOF is
5054 sent to the process. */
5055 if (NILP (p
->encode_coding_system
)
5056 && proc_encode_coding_system
[p
->outfd
])
5058 p
->encode_coding_system
5059 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5060 setup_coding_system (p
->encode_coding_system
,
5061 proc_encode_coding_system
[p
->outfd
]);
5065 if (coding
->carryover_bytes
> 0)
5067 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5068 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5069 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5070 coding
->carryover_bytes
);
5071 p
->decoding_carryover
= coding
->carryover_bytes
;
5073 if (SBYTES (text
) > 0)
5074 internal_condition_case_1 (read_process_output_call
,
5076 Fcons (proc
, Fcons (text
, Qnil
))),
5077 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5078 read_process_output_error_handler
);
5080 /* If we saved the match data nonrecursively, restore it now. */
5081 restore_search_regs ();
5082 running_asynch_code
= outer_running_asynch_code
;
5084 /* Restore waiting_for_user_input_p as it was
5085 when we were called, in case the filter clobbered it. */
5086 waiting_for_user_input_p
= waiting
;
5088 #if 0 /* Call record_asynch_buffer_change unconditionally,
5089 because we might have changed minor modes or other things
5090 that affect key bindings. */
5091 if (! EQ (Fcurrent_buffer (), obuffer
)
5092 || ! EQ (current_buffer
->keymap
, okeymap
))
5094 /* But do it only if the caller is actually going to read events.
5095 Otherwise there's no need to make him wake up, and it could
5096 cause trouble (for example it would make sit_for return). */
5097 if (waiting_for_user_input_p
== -1)
5098 record_asynch_buffer_change ();
5101 /* If no filter, write into buffer if it isn't dead. */
5102 else if (!NILP (p
->buffer
) && !NILP (BVAR (XBUFFER (p
->buffer
), name
)))
5104 Lisp_Object old_read_only
;
5105 EMACS_INT old_begv
, old_zv
;
5106 EMACS_INT old_begv_byte
, old_zv_byte
;
5107 EMACS_INT before
, before_byte
;
5108 EMACS_INT opoint_byte
;
5112 Fset_buffer (p
->buffer
);
5114 opoint_byte
= PT_BYTE
;
5115 old_read_only
= BVAR (current_buffer
, read_only
);
5118 old_begv_byte
= BEGV_BYTE
;
5119 old_zv_byte
= ZV_BYTE
;
5121 BVAR (current_buffer
, read_only
) = Qnil
;
5123 /* Insert new output into buffer
5124 at the current end-of-output marker,
5125 thus preserving logical ordering of input and output. */
5126 if (XMARKER (p
->mark
)->buffer
)
5127 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5128 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5131 SET_PT_BOTH (ZV
, ZV_BYTE
);
5133 before_byte
= PT_BYTE
;
5135 /* If the output marker is outside of the visible region, save
5136 the restriction and widen. */
5137 if (! (BEGV
<= PT
&& PT
<= ZV
))
5140 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5141 text
= coding
->dst_object
;
5142 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5143 /* A new coding system might be found. See the comment in the
5144 similar code in the previous `if' block. */
5145 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5147 p
->decode_coding_system
= Vlast_coding_system_used
;
5148 if (NILP (p
->encode_coding_system
)
5149 && proc_encode_coding_system
[p
->outfd
])
5151 p
->encode_coding_system
5152 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5153 setup_coding_system (p
->encode_coding_system
,
5154 proc_encode_coding_system
[p
->outfd
]);
5157 if (coding
->carryover_bytes
> 0)
5159 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5160 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5161 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5162 coding
->carryover_bytes
);
5163 p
->decoding_carryover
= coding
->carryover_bytes
;
5165 /* Adjust the multibyteness of TEXT to that of the buffer. */
5166 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5167 != ! STRING_MULTIBYTE (text
))
5168 text
= (STRING_MULTIBYTE (text
)
5169 ? Fstring_as_unibyte (text
)
5170 : Fstring_to_multibyte (text
));
5171 /* Insert before markers in case we are inserting where
5172 the buffer's mark is, and the user's next command is Meta-y. */
5173 insert_from_string_before_markers (text
, 0, 0,
5174 SCHARS (text
), SBYTES (text
), 0);
5176 /* Make sure the process marker's position is valid when the
5177 process buffer is changed in the signal_after_change above.
5178 W3 is known to do that. */
5179 if (BUFFERP (p
->buffer
)
5180 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5181 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5183 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5185 update_mode_lines
++;
5187 /* Make sure opoint and the old restrictions
5188 float ahead of any new text just as point would. */
5189 if (opoint
>= before
)
5191 opoint
+= PT
- before
;
5192 opoint_byte
+= PT_BYTE
- before_byte
;
5194 if (old_begv
> before
)
5196 old_begv
+= PT
- before
;
5197 old_begv_byte
+= PT_BYTE
- before_byte
;
5199 if (old_zv
>= before
)
5201 old_zv
+= PT
- before
;
5202 old_zv_byte
+= PT_BYTE
- before_byte
;
5205 /* If the restriction isn't what it should be, set it. */
5206 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5207 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5210 BVAR (current_buffer
, read_only
) = old_read_only
;
5211 SET_PT_BOTH (opoint
, opoint_byte
);
5213 /* Handling the process output should not deactivate the mark. */
5214 Vdeactivate_mark
= odeactivate
;
5216 unbind_to (count
, Qnil
);
5220 /* Sending data to subprocess */
5222 static jmp_buf send_process_frame
;
5223 static Lisp_Object process_sent_to
;
5225 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
5226 static void send_process_trap (int) NO_RETURN
;
5230 send_process_trap (int ignore
)
5232 SIGNAL_THREAD_CHECK (SIGPIPE
);
5233 sigunblock (sigmask (SIGPIPE
));
5234 longjmp (send_process_frame
, 1);
5237 /* Send some data to process PROC.
5238 BUF is the beginning of the data; LEN is the number of characters.
5239 OBJECT is the Lisp object that the data comes from. If OBJECT is
5240 nil or t, it means that the data comes from C string.
5242 If OBJECT is not nil, the data is encoded by PROC's coding-system
5243 for encoding before it is sent.
5245 This function can evaluate Lisp code and can garbage collect. */
5248 send_process (volatile Lisp_Object proc
, const char *volatile buf
,
5249 volatile EMACS_INT len
, volatile Lisp_Object object
)
5251 /* Use volatile to protect variables from being clobbered by longjmp. */
5252 struct Lisp_Process
*p
= XPROCESS (proc
);
5254 struct coding_system
*coding
;
5255 struct gcpro gcpro1
;
5256 void (*volatile old_sigpipe
) (int);
5260 if (p
->raw_status_new
)
5262 if (! EQ (p
->status
, Qrun
))
5263 error ("Process %s not running", SDATA (p
->name
));
5265 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5267 coding
= proc_encode_coding_system
[p
->outfd
];
5268 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5270 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5271 || (BUFFERP (object
)
5272 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5275 p
->encode_coding_system
5276 = complement_process_encoding_system (p
->encode_coding_system
);
5277 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5279 /* The coding system for encoding was changed to raw-text
5280 because we sent a unibyte text previously. Now we are
5281 sending a multibyte text, thus we must encode it by the
5282 original coding system specified for the current process.
5284 Another reason we comming here is that the coding system
5285 was just complemented and new one was returned by
5286 complement_process_encoding_system. */
5287 setup_coding_system (p
->encode_coding_system
, coding
);
5288 Vlast_coding_system_used
= p
->encode_coding_system
;
5290 coding
->src_multibyte
= 1;
5294 /* For sending a unibyte text, character code conversion should
5295 not take place but EOL conversion should. So, setup raw-text
5296 or one of the subsidiary if we have not yet done it. */
5297 if (CODING_REQUIRE_ENCODING (coding
))
5299 if (CODING_REQUIRE_FLUSHING (coding
))
5301 /* But, before changing the coding, we must flush out data. */
5302 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5303 send_process (proc
, "", 0, Qt
);
5304 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5306 setup_coding_system (raw_text_coding_system
5307 (Vlast_coding_system_used
),
5309 coding
->src_multibyte
= 0;
5312 coding
->dst_multibyte
= 0;
5314 if (CODING_REQUIRE_ENCODING (coding
))
5316 coding
->dst_object
= Qt
;
5317 if (BUFFERP (object
))
5319 EMACS_INT from_byte
, from
, to
;
5320 EMACS_INT save_pt
, save_pt_byte
;
5321 struct buffer
*cur
= current_buffer
;
5323 set_buffer_internal (XBUFFER (object
));
5324 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5326 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5327 from
= BYTE_TO_CHAR (from_byte
);
5328 to
= BYTE_TO_CHAR (from_byte
+ len
);
5329 TEMP_SET_PT_BOTH (from
, from_byte
);
5330 encode_coding_object (coding
, object
, from
, from_byte
,
5331 to
, from_byte
+ len
, Qt
);
5332 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5333 set_buffer_internal (cur
);
5335 else if (STRINGP (object
))
5337 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5338 SBYTES (object
), Qt
);
5342 coding
->dst_object
= make_unibyte_string (buf
, len
);
5343 coding
->produced
= len
;
5346 len
= coding
->produced
;
5347 object
= coding
->dst_object
;
5348 buf
= SSDATA (object
);
5351 if (pty_max_bytes
== 0)
5353 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5354 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5355 if (pty_max_bytes
< 0)
5356 pty_max_bytes
= 250;
5358 pty_max_bytes
= 250;
5360 /* Deduct one, to leave space for the eof. */
5364 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5365 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5366 when returning with longjmp despite being declared volatile. */
5367 if (!setjmp (send_process_frame
))
5369 p
= XPROCESS (proc
); /* Repair any setjmp clobbering. */
5371 process_sent_to
= proc
;
5374 EMACS_INT
this = len
;
5376 /* Send this batch, using one or more write calls. */
5379 EMACS_INT written
= 0;
5380 int outfd
= p
->outfd
;
5381 old_sigpipe
= (void (*) (int)) signal (SIGPIPE
, send_process_trap
);
5382 #ifdef DATAGRAM_SOCKETS
5383 if (DATAGRAM_CHAN_P (outfd
))
5385 rv
= sendto (outfd
, buf
, this,
5386 0, datagram_address
[outfd
].sa
,
5387 datagram_address
[outfd
].len
);
5390 else if (errno
== EMSGSIZE
)
5392 signal (SIGPIPE
, old_sigpipe
);
5393 report_file_error ("sending datagram",
5394 Fcons (proc
, Qnil
));
5401 if (XPROCESS (proc
)->gnutls_p
)
5402 written
= emacs_gnutls_write (outfd
,
5407 written
= emacs_write (outfd
, buf
, this);
5408 rv
= (written
? 0 : -1);
5409 #ifdef ADAPTIVE_READ_BUFFERING
5410 if (p
->read_output_delay
> 0
5411 && p
->adaptive_read_buffering
== 1)
5413 p
->read_output_delay
= 0;
5414 process_output_delay_count
--;
5415 p
->read_output_skip
= 0;
5419 signal (SIGPIPE
, old_sigpipe
);
5425 || errno
== EWOULDBLOCK
5431 /* Buffer is full. Wait, accepting input;
5432 that may allow the program
5433 to finish doing output and read more. */
5435 EMACS_INT offset
= 0;
5437 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5438 /* A gross hack to work around a bug in FreeBSD.
5439 In the following sequence, read(2) returns
5443 write(2) 954 bytes, get EAGAIN
5444 read(2) 1024 bytes in process_read_output
5445 read(2) 11 bytes in process_read_output
5447 That is, read(2) returns more bytes than have
5448 ever been written successfully. The 1033 bytes
5449 read are the 1022 bytes written successfully
5450 after processing (for example with CRs added if
5451 the terminal is set up that way which it is
5452 here). The same bytes will be seen again in a
5453 later read(2), without the CRs. */
5455 if (errno
== EAGAIN
)
5458 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5460 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5462 /* Running filters might relocate buffers or strings.
5463 Arrange to relocate BUF. */
5464 if (BUFFERP (object
))
5465 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
),
5466 (unsigned char *) buf
);
5467 else if (STRINGP (object
))
5468 offset
= buf
- SSDATA (object
);
5470 #ifdef EMACS_HAS_USECS
5471 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5473 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5476 if (BUFFERP (object
))
5477 buf
= (char *) BUF_BYTE_ADDRESS (XBUFFER (object
),
5479 else if (STRINGP (object
))
5480 buf
= offset
+ SSDATA (object
);
5483 /* This is a real error. */
5484 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5494 signal (SIGPIPE
, old_sigpipe
);
5495 proc
= process_sent_to
;
5496 p
= XPROCESS (proc
);
5497 p
->raw_status_new
= 0;
5498 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5499 p
->tick
= ++process_tick
;
5500 deactivate_process (proc
);
5501 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5507 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5509 doc
: /* Send current contents of region as input to PROCESS.
5510 PROCESS may be a process, a buffer, the name of a process or buffer, or
5511 nil, indicating the current buffer's process.
5512 Called from program, takes three arguments, PROCESS, START and END.
5513 If the region is more than 500 characters long,
5514 it is sent in several bunches. This may happen even for shorter regions.
5515 Output from processes can arrive in between bunches. */)
5516 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5519 EMACS_INT start1
, end1
;
5521 proc
= get_process (process
);
5522 validate_region (&start
, &end
);
5524 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5525 move_gap (XINT (start
));
5527 start1
= CHAR_TO_BYTE (XINT (start
));
5528 end1
= CHAR_TO_BYTE (XINT (end
));
5529 send_process (proc
, (char *) BYTE_POS_ADDR (start1
), end1
- start1
,
5530 Fcurrent_buffer ());
5535 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5537 doc
: /* Send PROCESS the contents of STRING as input.
5538 PROCESS may be a process, a buffer, the name of a process or buffer, or
5539 nil, indicating the current buffer's process.
5540 If STRING is more than 500 characters long,
5541 it is sent in several bunches. This may happen even for shorter strings.
5542 Output from processes can arrive in between bunches. */)
5543 (Lisp_Object process
, Lisp_Object string
)
5546 CHECK_STRING (string
);
5547 proc
= get_process (process
);
5548 send_process (proc
, SSDATA (string
),
5549 SBYTES (string
), string
);
5553 /* Return the foreground process group for the tty/pty that
5554 the process P uses. */
5556 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5561 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5564 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5565 master side. Try the slave side. */
5566 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5570 ioctl (fd
, TIOCGPGRP
, &gid
);
5574 #endif /* defined (TIOCGPGRP ) */
5579 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5580 Sprocess_running_child_p
, 0, 1, 0,
5581 doc
: /* Return t if PROCESS has given the terminal to a child.
5582 If the operating system does not make it possible to find out,
5583 return t unconditionally. */)
5584 (Lisp_Object process
)
5586 /* Initialize in case ioctl doesn't exist or gives an error,
5587 in a way that will cause returning t. */
5590 struct Lisp_Process
*p
;
5592 proc
= get_process (process
);
5593 p
= XPROCESS (proc
);
5595 if (!EQ (p
->type
, Qreal
))
5596 error ("Process %s is not a subprocess",
5599 error ("Process %s is not active",
5602 gid
= emacs_get_tty_pgrp (p
);
5609 /* send a signal number SIGNO to PROCESS.
5610 If CURRENT_GROUP is t, that means send to the process group
5611 that currently owns the terminal being used to communicate with PROCESS.
5612 This is used for various commands in shell mode.
5613 If CURRENT_GROUP is lambda, that means send to the process group
5614 that currently owns the terminal, but only if it is NOT the shell itself.
5616 If NOMSG is zero, insert signal-announcements into process's buffers
5619 If we can, we try to signal PROCESS by sending control characters
5620 down the pty. This allows us to signal inferiors who have changed
5621 their uid, for which killpg would return an EPERM error. */
5624 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5628 register struct Lisp_Process
*p
;
5632 proc
= get_process (process
);
5633 p
= XPROCESS (proc
);
5635 if (!EQ (p
->type
, Qreal
))
5636 error ("Process %s is not a subprocess",
5639 error ("Process %s is not active",
5643 current_group
= Qnil
;
5645 /* If we are using pgrps, get a pgrp number and make it negative. */
5646 if (NILP (current_group
))
5647 /* Send the signal to the shell's process group. */
5651 #ifdef SIGNALS_VIA_CHARACTERS
5652 /* If possible, send signals to the entire pgrp
5653 by sending an input character to it. */
5656 cc_t
*sig_char
= NULL
;
5658 tcgetattr (p
->infd
, &t
);
5663 sig_char
= &t
.c_cc
[VINTR
];
5667 sig_char
= &t
.c_cc
[VQUIT
];
5671 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5672 sig_char
= &t
.c_cc
[VSWTCH
];
5674 sig_char
= &t
.c_cc
[VSUSP
];
5679 if (sig_char
&& *sig_char
!= CDISABLE
)
5681 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5684 /* If we can't send the signal with a character,
5685 fall through and send it another way. */
5687 /* The code above may fall through if it can't
5688 handle the signal. */
5689 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5692 /* Get the current pgrp using the tty itself, if we have that.
5693 Otherwise, use the pty to get the pgrp.
5694 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5695 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5696 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5697 His patch indicates that if TIOCGPGRP returns an error, then
5698 we should just assume that p->pid is also the process group id. */
5700 gid
= emacs_get_tty_pgrp (p
);
5703 /* If we can't get the information, assume
5704 the shell owns the tty. */
5707 /* It is not clear whether anything really can set GID to -1.
5708 Perhaps on some system one of those ioctls can or could do so.
5709 Or perhaps this is vestigial. */
5712 #else /* ! defined (TIOCGPGRP ) */
5713 /* Can't select pgrps on this system, so we know that
5714 the child itself heads the pgrp. */
5716 #endif /* ! defined (TIOCGPGRP ) */
5718 /* If current_group is lambda, and the shell owns the terminal,
5719 don't send any signal. */
5720 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5728 p
->raw_status_new
= 0;
5730 p
->tick
= ++process_tick
;
5733 status_notify (NULL
);
5734 redisplay_preserve_echo_area (13);
5737 #endif /* ! defined (SIGCONT) */
5741 flush_pending_output (p
->infd
);
5745 /* If we don't have process groups, send the signal to the immediate
5746 subprocess. That isn't really right, but it's better than any
5747 obvious alternative. */
5750 kill (p
->pid
, signo
);
5754 /* gid may be a pid, or minus a pgrp's number */
5756 if (!NILP (current_group
))
5758 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5759 EMACS_KILLPG (gid
, signo
);
5766 #else /* ! defined (TIOCSIGSEND) */
5767 EMACS_KILLPG (gid
, signo
);
5768 #endif /* ! defined (TIOCSIGSEND) */
5771 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5772 doc
: /* Interrupt process PROCESS.
5773 PROCESS may be a process, a buffer, or the name of a process or buffer.
5774 No arg or nil means current buffer's process.
5775 Second arg CURRENT-GROUP non-nil means send signal to
5776 the current process-group of the process's controlling terminal
5777 rather than to the process's own process group.
5778 If the process is a shell, this means interrupt current subjob
5779 rather than the shell.
5781 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5782 don't send the signal. */)
5783 (Lisp_Object process
, Lisp_Object current_group
)
5785 process_send_signal (process
, SIGINT
, current_group
, 0);
5789 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5790 doc
: /* Kill process PROCESS. May be process or name of one.
5791 See function `interrupt-process' for more details on usage. */)
5792 (Lisp_Object process
, Lisp_Object current_group
)
5794 process_send_signal (process
, SIGKILL
, current_group
, 0);
5798 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5799 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5800 See function `interrupt-process' for more details on usage. */)
5801 (Lisp_Object process
, Lisp_Object current_group
)
5803 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5807 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5808 doc
: /* Stop process PROCESS. May be process or name of one.
5809 See function `interrupt-process' for more details on usage.
5810 If PROCESS is a network or serial process, inhibit handling of incoming
5812 (Lisp_Object process
, Lisp_Object current_group
)
5814 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5816 struct Lisp_Process
*p
;
5818 p
= XPROCESS (process
);
5819 if (NILP (p
->command
)
5822 FD_CLR (p
->infd
, &input_wait_mask
);
5823 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5829 error ("No SIGTSTP support");
5831 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5836 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5837 doc
: /* Continue process PROCESS. May be process or name of one.
5838 See function `interrupt-process' for more details on usage.
5839 If PROCESS is a network or serial process, resume handling of incoming
5841 (Lisp_Object process
, Lisp_Object current_group
)
5843 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5845 struct Lisp_Process
*p
;
5847 p
= XPROCESS (process
);
5848 if (EQ (p
->command
, Qt
)
5850 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5852 FD_SET (p
->infd
, &input_wait_mask
);
5853 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5855 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5856 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5857 #else /* not WINDOWSNT */
5858 tcflush (p
->infd
, TCIFLUSH
);
5859 #endif /* not WINDOWSNT */
5865 process_send_signal (process
, SIGCONT
, current_group
, 0);
5867 error ("No SIGCONT support");
5872 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5873 2, 2, "sProcess (name or number): \nnSignal code: ",
5874 doc
: /* Send PROCESS the signal with code SIGCODE.
5875 PROCESS may also be a number specifying the process id of the
5876 process to signal; in this case, the process need not be a child of
5878 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5879 (Lisp_Object process
, Lisp_Object sigcode
)
5883 if (INTEGERP (process
))
5885 pid
= XINT (process
);
5889 if (FLOATP (process
))
5891 pid
= (pid_t
) XFLOAT_DATA (process
);
5895 if (STRINGP (process
))
5898 if (tem
= Fget_process (process
), NILP (tem
))
5900 pid
= XINT (Fstring_to_number (process
, make_number (10)));
5907 process
= get_process (process
);
5912 CHECK_PROCESS (process
);
5913 pid
= XPROCESS (process
)->pid
;
5915 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5919 #define parse_signal(NAME, VALUE) \
5920 else if (!xstrcasecmp (name, NAME)) \
5921 XSETINT (sigcode, VALUE)
5923 if (INTEGERP (sigcode
))
5929 CHECK_SYMBOL (sigcode
);
5930 name
= SSDATA (SYMBOL_NAME (sigcode
));
5932 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5938 parse_signal ("usr1", SIGUSR1
);
5941 parse_signal ("usr2", SIGUSR2
);
5944 parse_signal ("term", SIGTERM
);
5947 parse_signal ("hup", SIGHUP
);
5950 parse_signal ("int", SIGINT
);
5953 parse_signal ("quit", SIGQUIT
);
5956 parse_signal ("ill", SIGILL
);
5959 parse_signal ("abrt", SIGABRT
);
5962 parse_signal ("emt", SIGEMT
);
5965 parse_signal ("kill", SIGKILL
);
5968 parse_signal ("fpe", SIGFPE
);
5971 parse_signal ("bus", SIGBUS
);
5974 parse_signal ("segv", SIGSEGV
);
5977 parse_signal ("sys", SIGSYS
);
5980 parse_signal ("pipe", SIGPIPE
);
5983 parse_signal ("alrm", SIGALRM
);
5986 parse_signal ("urg", SIGURG
);
5989 parse_signal ("stop", SIGSTOP
);
5992 parse_signal ("tstp", SIGTSTP
);
5995 parse_signal ("cont", SIGCONT
);
5998 parse_signal ("chld", SIGCHLD
);
6001 parse_signal ("ttin", SIGTTIN
);
6004 parse_signal ("ttou", SIGTTOU
);
6007 parse_signal ("io", SIGIO
);
6010 parse_signal ("xcpu", SIGXCPU
);
6013 parse_signal ("xfsz", SIGXFSZ
);
6016 parse_signal ("vtalrm", SIGVTALRM
);
6019 parse_signal ("prof", SIGPROF
);
6022 parse_signal ("winch", SIGWINCH
);
6025 parse_signal ("info", SIGINFO
);
6028 error ("Undefined signal name %s", name
);
6033 return make_number (kill (pid
, XINT (sigcode
)));
6036 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6037 doc
: /* Make PROCESS see end-of-file in its input.
6038 EOF comes after any text already sent to it.
6039 PROCESS may be a process, a buffer, the name of a process or buffer, or
6040 nil, indicating the current buffer's process.
6041 If PROCESS is a network connection, or is a process communicating
6042 through a pipe (as opposed to a pty), then you cannot send any more
6043 text to PROCESS after you call this function.
6044 If PROCESS is a serial process, wait until all output written to the
6045 process has been transmitted to the serial port. */)
6046 (Lisp_Object process
)
6049 struct coding_system
*coding
;
6051 if (DATAGRAM_CONN_P (process
))
6054 proc
= get_process (process
);
6055 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6057 /* Make sure the process is really alive. */
6058 if (XPROCESS (proc
)->raw_status_new
)
6059 update_status (XPROCESS (proc
));
6060 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6061 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6063 if (CODING_REQUIRE_FLUSHING (coding
))
6065 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6066 send_process (proc
, "", 0, Qnil
);
6069 if (XPROCESS (proc
)->pty_flag
)
6070 send_process (proc
, "\004", 1, Qnil
);
6071 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6074 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6075 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6076 #endif /* not WINDOWSNT */
6077 /* Do nothing on Windows because writes are blocking. */
6081 int old_outfd
, new_outfd
;
6083 #ifdef HAVE_SHUTDOWN
6084 /* If this is a network connection, or socketpair is used
6085 for communication with the subprocess, call shutdown to cause EOF.
6086 (In some old system, shutdown to socketpair doesn't work.
6087 Then we just can't win.) */
6088 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6089 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6090 shutdown (XPROCESS (proc
)->outfd
, 1);
6091 /* In case of socketpair, outfd == infd, so don't close it. */
6092 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6093 emacs_close (XPROCESS (proc
)->outfd
);
6094 #else /* not HAVE_SHUTDOWN */
6095 emacs_close (XPROCESS (proc
)->outfd
);
6096 #endif /* not HAVE_SHUTDOWN */
6097 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6100 old_outfd
= XPROCESS (proc
)->outfd
;
6102 if (!proc_encode_coding_system
[new_outfd
])
6103 proc_encode_coding_system
[new_outfd
]
6104 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6105 memcpy (proc_encode_coding_system
[new_outfd
],
6106 proc_encode_coding_system
[old_outfd
],
6107 sizeof (struct coding_system
));
6108 memset (proc_encode_coding_system
[old_outfd
], 0,
6109 sizeof (struct coding_system
));
6111 XPROCESS (proc
)->outfd
= new_outfd
;
6116 /* On receipt of a signal that a child status has changed, loop asking
6117 about children with changed statuses until the system says there
6120 All we do is change the status; we do not run sentinels or print
6121 notifications. That is saved for the next time keyboard input is
6122 done, in order to avoid timing errors.
6124 ** WARNING: this can be called during garbage collection.
6125 Therefore, it must not be fooled by the presence of mark bits in
6128 ** USG WARNING: Although it is not obvious from the documentation
6129 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6130 signal() before executing at least one wait(), otherwise the
6131 handler will be called again, resulting in an infinite loop. The
6132 relevant portion of the documentation reads "SIGCLD signals will be
6133 queued and the signal-catching function will be continually
6134 reentered until the queue is empty". Invoking signal() causes the
6135 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6138 ** Malloc WARNING: This should never call malloc either directly or
6139 indirectly; if it does, that is a bug */
6143 sigchld_handler (int signo
)
6145 int old_errno
= errno
;
6147 struct Lisp_Process
*p
;
6149 SIGNAL_THREAD_CHECK (signo
);
6160 #endif /* no WUNTRACED */
6161 /* Keep trying to get a status until we get a definitive result. */
6165 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6167 while (pid
< 0 && errno
== EINTR
);
6171 /* PID == 0 means no processes found, PID == -1 means a real
6172 failure. We have done all our job, so return. */
6179 #endif /* no WNOHANG */
6181 /* Find the process that signaled us, and record its status. */
6183 /* The process can have been deleted by Fdelete_process. */
6184 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6186 Lisp_Object xpid
= XCAR (tail
);
6187 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6188 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6190 XSETCAR (tail
, Qnil
);
6191 goto sigchld_end_of_loop
;
6195 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6197 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6199 proc
= XCDR (XCAR (tail
));
6200 p
= XPROCESS (proc
);
6201 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6206 /* Look for an asynchronous process whose pid hasn't been filled
6209 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6211 proc
= XCDR (XCAR (tail
));
6212 p
= XPROCESS (proc
);
6218 /* Change the status of the process that was found. */
6221 int clear_desc_flag
= 0;
6223 p
->tick
= ++process_tick
;
6225 p
->raw_status_new
= 1;
6227 /* If process has terminated, stop waiting for its output. */
6228 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6230 clear_desc_flag
= 1;
6232 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6233 if (clear_desc_flag
)
6235 FD_CLR (p
->infd
, &input_wait_mask
);
6236 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6239 /* Tell wait_reading_process_output that it needs to wake up and
6241 if (input_available_clear_time
)
6242 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6245 /* There was no asynchronous process found for that pid: we have
6246 a synchronous process. */
6249 synch_process_alive
= 0;
6251 /* Report the status of the synchronous process. */
6253 synch_process_retcode
= WRETCODE (w
);
6254 else if (WIFSIGNALED (w
))
6255 synch_process_termsig
= WTERMSIG (w
);
6257 /* Tell wait_reading_process_output that it needs to wake up and
6259 if (input_available_clear_time
)
6260 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6263 sigchld_end_of_loop
:
6266 /* On some systems, we must return right away.
6267 If any more processes want to signal us, we will
6269 Otherwise (on systems that have WNOHANG), loop around
6270 to use up all the processes that have something to tell us. */
6271 #if (defined WINDOWSNT \
6272 || (defined USG && !defined GNU_LINUX \
6273 && !(defined HPUX && defined WNOHANG)))
6276 #endif /* USG, but not HPUX with WNOHANG */
6279 #endif /* SIGCHLD */
6283 exec_sentinel_unwind (Lisp_Object data
)
6285 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6290 exec_sentinel_error_handler (Lisp_Object error_val
)
6292 cmd_error_internal (error_val
, "error in process sentinel: ");
6294 update_echo_area ();
6295 Fsleep_for (make_number (2), Qnil
);
6300 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6302 Lisp_Object sentinel
, odeactivate
;
6303 register struct Lisp_Process
*p
= XPROCESS (proc
);
6304 int count
= SPECPDL_INDEX ();
6305 int outer_running_asynch_code
= running_asynch_code
;
6306 int waiting
= waiting_for_user_input_p
;
6308 if (inhibit_sentinels
)
6311 /* No need to gcpro these, because all we do with them later
6312 is test them for EQness, and none of them should be a string. */
6313 odeactivate
= Vdeactivate_mark
;
6315 Lisp_Object obuffer
, okeymap
;
6316 XSETBUFFER (obuffer
, current_buffer
);
6317 okeymap
= BVAR (current_buffer
, keymap
);
6320 /* There's no good reason to let sentinels change the current
6321 buffer, and many callers of accept-process-output, sit-for, and
6322 friends don't expect current-buffer to be changed from under them. */
6323 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6325 sentinel
= p
->sentinel
;
6326 if (NILP (sentinel
))
6329 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6330 assure that it gets restored no matter how the sentinel exits. */
6332 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6333 /* Inhibit quit so that random quits don't screw up a running filter. */
6334 specbind (Qinhibit_quit
, Qt
);
6335 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6337 /* In case we get recursively called,
6338 and we already saved the match data nonrecursively,
6339 save the same match data in safely recursive fashion. */
6340 if (outer_running_asynch_code
)
6343 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6344 restore_search_regs ();
6345 record_unwind_save_match_data ();
6346 Fset_match_data (tem
, Qt
);
6349 /* For speed, if a search happens within this code,
6350 save the match data in a special nonrecursive fashion. */
6351 running_asynch_code
= 1;
6353 internal_condition_case_1 (read_process_output_call
,
6355 Fcons (proc
, Fcons (reason
, Qnil
))),
6356 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6357 exec_sentinel_error_handler
);
6359 /* If we saved the match data nonrecursively, restore it now. */
6360 restore_search_regs ();
6361 running_asynch_code
= outer_running_asynch_code
;
6363 Vdeactivate_mark
= odeactivate
;
6365 /* Restore waiting_for_user_input_p as it was
6366 when we were called, in case the filter clobbered it. */
6367 waiting_for_user_input_p
= waiting
;
6370 if (! EQ (Fcurrent_buffer (), obuffer
)
6371 || ! EQ (current_buffer
->keymap
, okeymap
))
6373 /* But do it only if the caller is actually going to read events.
6374 Otherwise there's no need to make him wake up, and it could
6375 cause trouble (for example it would make sit_for return). */
6376 if (waiting_for_user_input_p
== -1)
6377 record_asynch_buffer_change ();
6379 unbind_to (count
, Qnil
);
6382 /* Report all recent events of a change in process status
6383 (either run the sentinel or output a message).
6384 This is usually done while Emacs is waiting for keyboard input
6385 but can be done at other times. */
6388 status_notify (struct Lisp_Process
*deleting_process
)
6390 register Lisp_Object proc
, buffer
;
6391 Lisp_Object tail
, msg
;
6392 struct gcpro gcpro1
, gcpro2
;
6396 /* We need to gcpro tail; if read_process_output calls a filter
6397 which deletes a process and removes the cons to which tail points
6398 from Vprocess_alist, and then causes a GC, tail is an unprotected
6402 /* Set this now, so that if new processes are created by sentinels
6403 that we run, we get called again to handle their status changes. */
6404 update_tick
= process_tick
;
6406 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6409 register struct Lisp_Process
*p
;
6411 proc
= Fcdr (XCAR (tail
));
6412 p
= XPROCESS (proc
);
6414 if (p
->tick
!= p
->update_tick
)
6416 p
->update_tick
= p
->tick
;
6418 /* If process is still active, read any output that remains. */
6419 while (! EQ (p
->filter
, Qt
)
6420 && ! EQ (p
->status
, Qconnect
)
6421 && ! EQ (p
->status
, Qlisten
)
6422 /* Network or serial process not stopped: */
6423 && ! EQ (p
->command
, Qt
)
6425 && p
!= deleting_process
6426 && read_process_output (proc
, p
->infd
) > 0);
6430 /* Get the text to use for the message. */
6431 if (p
->raw_status_new
)
6433 msg
= status_message (p
);
6435 /* If process is terminated, deactivate it or delete it. */
6437 if (CONSP (p
->status
))
6438 symbol
= XCAR (p
->status
);
6440 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6441 || EQ (symbol
, Qclosed
))
6443 if (delete_exited_processes
)
6444 remove_process (proc
);
6446 deactivate_process (proc
);
6449 /* The actions above may have further incremented p->tick.
6450 So set p->update_tick again
6451 so that an error in the sentinel will not cause
6452 this code to be run again. */
6453 p
->update_tick
= p
->tick
;
6454 /* Now output the message suitably. */
6455 if (!NILP (p
->sentinel
))
6456 exec_sentinel (proc
, msg
);
6457 /* Don't bother with a message in the buffer
6458 when a process becomes runnable. */
6459 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6462 struct buffer
*old
= current_buffer
;
6463 EMACS_INT opoint
, opoint_byte
;
6464 EMACS_INT before
, before_byte
;
6466 /* Avoid error if buffer is deleted
6467 (probably that's why the process is dead, too) */
6468 if (NILP (BVAR (XBUFFER (buffer
), name
)))
6470 Fset_buffer (buffer
);
6473 opoint_byte
= PT_BYTE
;
6474 /* Insert new output into buffer
6475 at the current end-of-output marker,
6476 thus preserving logical ordering of input and output. */
6477 if (XMARKER (p
->mark
)->buffer
)
6478 Fgoto_char (p
->mark
);
6480 SET_PT_BOTH (ZV
, ZV_BYTE
);
6483 before_byte
= PT_BYTE
;
6485 tem
= BVAR (current_buffer
, read_only
);
6486 BVAR (current_buffer
, read_only
) = Qnil
;
6487 insert_string ("\nProcess ");
6488 Finsert (1, &p
->name
);
6489 insert_string (" ");
6491 BVAR (current_buffer
, read_only
) = tem
;
6492 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6494 if (opoint
>= before
)
6495 SET_PT_BOTH (opoint
+ (PT
- before
),
6496 opoint_byte
+ (PT_BYTE
- before_byte
));
6498 SET_PT_BOTH (opoint
, opoint_byte
);
6500 set_buffer_internal (old
);
6505 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6510 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6511 Sset_process_coding_system
, 1, 3, 0,
6512 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6513 DECODING will be used to decode subprocess output and ENCODING to
6514 encode subprocess input. */)
6515 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6517 register struct Lisp_Process
*p
;
6519 CHECK_PROCESS (process
);
6520 p
= XPROCESS (process
);
6522 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6524 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6525 Fcheck_coding_system (decoding
);
6526 Fcheck_coding_system (encoding
);
6527 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6528 p
->decode_coding_system
= decoding
;
6529 p
->encode_coding_system
= encoding
;
6530 setup_process_coding_systems (process
);
6535 DEFUN ("process-coding-system",
6536 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6537 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6538 (register Lisp_Object process
)
6540 CHECK_PROCESS (process
);
6541 return Fcons (XPROCESS (process
)->decode_coding_system
,
6542 XPROCESS (process
)->encode_coding_system
);
6545 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6546 Sset_process_filter_multibyte
, 2, 2, 0,
6547 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6548 If FLAG is non-nil, the filter is given multibyte strings.
6549 If FLAG is nil, the filter is given unibyte strings. In this case,
6550 all character code conversion except for end-of-line conversion is
6552 (Lisp_Object process
, Lisp_Object flag
)
6554 register struct Lisp_Process
*p
;
6556 CHECK_PROCESS (process
);
6557 p
= XPROCESS (process
);
6559 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6560 setup_process_coding_systems (process
);
6565 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6566 Sprocess_filter_multibyte_p
, 1, 1, 0,
6567 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6568 (Lisp_Object process
)
6570 register struct Lisp_Process
*p
;
6571 struct coding_system
*coding
;
6573 CHECK_PROCESS (process
);
6574 p
= XPROCESS (process
);
6575 coding
= proc_decode_coding_system
[p
->infd
];
6576 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6583 add_gpm_wait_descriptor (int desc
)
6585 add_keyboard_wait_descriptor (desc
);
6589 delete_gpm_wait_descriptor (int desc
)
6591 delete_keyboard_wait_descriptor (desc
);
6596 /* Return nonzero if *MASK has a bit set
6597 that corresponds to one of the keyboard input descriptors. */
6600 keyboard_bit_set (fd_set
*mask
)
6604 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6605 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6606 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6613 #else /* not subprocesses */
6615 /* Defined on msdos.c. */
6616 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6619 /* Implementation of wait_reading_process_output, assuming that there
6620 are no subprocesses. Used only by the MS-DOS build.
6622 Wait for timeout to elapse and/or keyboard input to be available.
6625 timeout in seconds, or
6626 zero for no limit, or
6627 -1 means gobble data immediately available but don't wait for any.
6629 read_kbd is a Lisp_Object:
6630 0 to ignore keyboard input, or
6631 1 to return when input is available, or
6632 -1 means caller will actually read the input, so don't throw to
6635 see full version for other parameters. We know that wait_proc will
6636 always be NULL, since `subprocesses' isn't defined.
6638 do_display != 0 means redisplay should be done to show subprocess
6639 output that arrives.
6641 Return true if we received input from any process. */
6644 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6646 Lisp_Object wait_for_cell
,
6647 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6650 EMACS_TIME end_time
, timeout
;
6651 SELECT_TYPE waitchannels
;
6654 /* What does time_limit really mean? */
6655 if (time_limit
|| microsecs
)
6657 EMACS_GET_TIME (end_time
);
6658 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6659 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6662 /* Turn off periodic alarms (in case they are in use)
6663 and then turn off any other atimers,
6664 because the select emulator uses alarms. */
6666 turn_on_atimers (0);
6670 int timeout_reduced_for_timers
= 0;
6672 /* If calling from keyboard input, do not quit
6673 since we want to return C-g as an input character.
6674 Otherwise, do pending quit if requested. */
6678 /* Exit now if the cell we're waiting for became non-nil. */
6679 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6682 /* Compute time from now till when time limit is up */
6683 /* Exit if already run out */
6684 if (time_limit
== -1)
6686 /* -1 specified for timeout means
6687 gobble output available now
6688 but don't wait at all. */
6690 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6692 else if (time_limit
|| microsecs
)
6694 EMACS_GET_TIME (timeout
);
6695 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6696 if (EMACS_TIME_NEG_P (timeout
))
6701 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6704 /* If our caller will not immediately handle keyboard events,
6705 run timer events directly.
6706 (Callers that will immediately read keyboard events
6707 call timer_delay on their own.) */
6708 if (NILP (wait_for_cell
))
6710 EMACS_TIME timer_delay
;
6714 int old_timers_run
= timers_run
;
6715 timer_delay
= timer_check ();
6716 if (timers_run
!= old_timers_run
&& do_display
)
6717 /* We must retry, since a timer may have requeued itself
6718 and that could alter the time delay. */
6719 redisplay_preserve_echo_area (14);
6723 while (!detect_input_pending ());
6725 /* If there is unread keyboard input, also return. */
6727 && requeued_events_pending_p ())
6730 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6732 EMACS_TIME difference
;
6733 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6734 if (EMACS_TIME_NEG_P (difference
))
6736 timeout
= timer_delay
;
6737 timeout_reduced_for_timers
= 1;
6742 /* Cause C-g and alarm signals to take immediate action,
6743 and cause input available signals to zero out timeout. */
6745 set_waiting_for_input (&timeout
);
6747 /* Wait till there is something to do. */
6749 if (! read_kbd
&& NILP (wait_for_cell
))
6750 FD_ZERO (&waitchannels
);
6752 FD_SET (0, &waitchannels
);
6754 /* If a frame has been newly mapped and needs updating,
6755 reprocess its display stuff. */
6756 if (frame_garbaged
&& do_display
)
6758 clear_waiting_for_input ();
6759 redisplay_preserve_echo_area (15);
6761 set_waiting_for_input (&timeout
);
6764 if (read_kbd
&& detect_input_pending ())
6767 FD_ZERO (&waitchannels
);
6770 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6775 /* Make C-g and alarm signals set flags again */
6776 clear_waiting_for_input ();
6778 /* If we woke up due to SIGWINCH, actually change size now. */
6779 do_pending_window_change (0);
6781 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6782 /* We waited the full specified time, so return now. */
6787 /* If the system call was interrupted, then go around the
6789 if (xerrno
== EINTR
)
6790 FD_ZERO (&waitchannels
);
6792 error ("select error: %s", emacs_strerror (xerrno
));
6795 /* Check for keyboard input */
6798 && detect_input_pending_run_timers (do_display
))
6800 swallow_events (do_display
);
6801 if (detect_input_pending_run_timers (do_display
))
6805 /* If there is unread keyboard input, also return. */
6807 && requeued_events_pending_p ())
6810 /* If wait_for_cell. check for keyboard input
6811 but don't run any timers.
6812 ??? (It seems wrong to me to check for keyboard
6813 input at all when wait_for_cell, but the code
6814 has been this way since July 1994.
6815 Try changing this after version 19.31.) */
6816 if (! NILP (wait_for_cell
)
6817 && detect_input_pending ())
6819 swallow_events (do_display
);
6820 if (detect_input_pending ())
6824 /* Exit now if the cell we're waiting for became non-nil. */
6825 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6834 #endif /* not subprocesses */
6836 /* The following functions are needed even if async subprocesses are
6837 not supported. Some of them are no-op stubs in that case. */
6839 /* Add DESC to the set of keyboard input descriptors. */
6842 add_keyboard_wait_descriptor (int desc
)
6844 #ifdef subprocesses /* actually means "not MSDOS" */
6845 FD_SET (desc
, &input_wait_mask
);
6846 FD_SET (desc
, &non_process_wait_mask
);
6847 if (desc
> max_input_desc
)
6848 max_input_desc
= desc
;
6852 /* From now on, do not expect DESC to give keyboard input. */
6855 delete_keyboard_wait_descriptor (int desc
)
6859 int lim
= max_input_desc
;
6861 FD_CLR (desc
, &input_wait_mask
);
6862 FD_CLR (desc
, &non_process_wait_mask
);
6864 if (desc
== max_input_desc
)
6865 for (fd
= 0; fd
< lim
; fd
++)
6866 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
6867 max_input_desc
= fd
;
6871 /* Setup coding systems of PROCESS. */
6874 setup_process_coding_systems (Lisp_Object process
)
6877 struct Lisp_Process
*p
= XPROCESS (process
);
6879 int outch
= p
->outfd
;
6880 Lisp_Object coding_system
;
6882 if (inch
< 0 || outch
< 0)
6885 if (!proc_decode_coding_system
[inch
])
6886 proc_decode_coding_system
[inch
]
6887 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6888 coding_system
= p
->decode_coding_system
;
6889 if (! NILP (p
->filter
))
6891 else if (BUFFERP (p
->buffer
))
6893 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6894 coding_system
= raw_text_coding_system (coding_system
);
6896 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6898 if (!proc_encode_coding_system
[outch
])
6899 proc_encode_coding_system
[outch
]
6900 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6901 setup_coding_system (p
->encode_coding_system
,
6902 proc_encode_coding_system
[outch
]);
6906 /* Close all descriptors currently in use for communication
6907 with subprocess. This is used in a newly-forked subprocess
6908 to get rid of irrelevant descriptors. */
6911 close_process_descs (void)
6915 for (i
= 0; i
< MAXDESC
; i
++)
6917 Lisp_Object process
;
6918 process
= chan_process
[i
];
6919 if (!NILP (process
))
6921 int in
= XPROCESS (process
)->infd
;
6922 int out
= XPROCESS (process
)->outfd
;
6925 if (out
>= 0 && in
!= out
)
6932 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6933 doc
: /* Return the (or a) process associated with BUFFER.
6934 BUFFER may be a buffer or the name of one. */)
6935 (register Lisp_Object buffer
)
6938 register Lisp_Object buf
, tail
, proc
;
6940 if (NILP (buffer
)) return Qnil
;
6941 buf
= Fget_buffer (buffer
);
6942 if (NILP (buf
)) return Qnil
;
6944 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6946 proc
= Fcdr (XCAR (tail
));
6947 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
6950 #endif /* subprocesses */
6954 DEFUN ("process-inherit-coding-system-flag",
6955 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6957 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6958 If this flag is t, `buffer-file-coding-system' of the buffer
6959 associated with PROCESS will inherit the coding system used to decode
6960 the process output. */)
6961 (register Lisp_Object process
)
6964 CHECK_PROCESS (process
);
6965 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6967 /* Ignore the argument and return the value of
6968 inherit-process-coding-system. */
6969 return inherit_process_coding_system
? Qt
: Qnil
;
6973 /* Kill all processes associated with `buffer'.
6974 If `buffer' is nil, kill all processes */
6977 kill_buffer_processes (Lisp_Object buffer
)
6980 Lisp_Object tail
, proc
;
6982 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6984 proc
= XCDR (XCAR (tail
));
6986 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6988 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6989 Fdelete_process (proc
);
6990 else if (XPROCESS (proc
)->infd
>= 0)
6991 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6994 #else /* subprocesses */
6995 /* Since we have no subprocesses, this does nothing. */
6996 #endif /* subprocesses */
6999 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7000 Swaiting_for_user_input_p
, 0, 0, 0,
7001 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7002 This is intended for use by asynchronous process output filters and sentinels. */)
7006 return (waiting_for_user_input_p
? Qt
: Qnil
);
7012 /* Stop reading input from keyboard sources. */
7015 hold_keyboard_input (void)
7020 /* Resume reading input from keyboard sources. */
7023 unhold_keyboard_input (void)
7028 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7031 kbd_on_hold_p (void)
7033 return kbd_is_on_hold
;
7037 /* Enumeration of and access to system processes a-la ps(1). */
7039 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7041 doc
: /* Return a list of numerical process IDs of all running processes.
7042 If this functionality is unsupported, return nil.
7044 See `process-attributes' for getting attributes of a process given its ID. */)
7047 return list_system_processes ();
7050 DEFUN ("process-attributes", Fprocess_attributes
,
7051 Sprocess_attributes
, 1, 1, 0,
7052 doc
: /* Return attributes of the process given by its PID, a number.
7054 Value is an alist where each element is a cons cell of the form
7058 If this functionality is unsupported, the value is nil.
7060 See `list-system-processes' for getting a list of all process IDs.
7062 The KEYs of the attributes that this function may return are listed
7063 below, together with the type of the associated VALUE (in parentheses).
7064 Not all platforms support all of these attributes; unsupported
7065 attributes will not appear in the returned alist.
7066 Unless explicitly indicated otherwise, numbers can have either
7067 integer or floating point values.
7069 euid -- Effective user User ID of the process (number)
7070 user -- User name corresponding to euid (string)
7071 egid -- Effective user Group ID of the process (number)
7072 group -- Group name corresponding to egid (string)
7073 comm -- Command name (executable name only) (string)
7074 state -- Process state code, such as "S", "R", or "T" (string)
7075 ppid -- Parent process ID (number)
7076 pgrp -- Process group ID (number)
7077 sess -- Session ID, i.e. process ID of session leader (number)
7078 ttname -- Controlling tty name (string)
7079 tpgid -- ID of foreground process group on the process's tty (number)
7080 minflt -- number of minor page faults (number)
7081 majflt -- number of major page faults (number)
7082 cminflt -- cumulative number of minor page faults (number)
7083 cmajflt -- cumulative number of major page faults (number)
7084 utime -- user time used by the process, in the (HIGH LOW USEC) format
7085 stime -- system time used by the process, in the (HIGH LOW USEC) format
7086 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7087 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7088 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7089 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7090 pri -- priority of the process (number)
7091 nice -- nice value of the process (number)
7092 thcount -- process thread count (number)
7093 start -- time the process started, in the (HIGH LOW USEC) format
7094 vsize -- virtual memory size of the process in KB's (number)
7095 rss -- resident set size of the process in KB's (number)
7096 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7097 pcpu -- percents of CPU time used by the process (floating-point number)
7098 pmem -- percents of total physical memory used by process's resident set
7099 (floating-point number)
7100 args -- command line which invoked the process (string). */)
7103 return system_process_attributes (pid
);
7113 inhibit_sentinels
= 0;
7117 if (! noninteractive
|| initialized
)
7119 signal (SIGCHLD
, sigchld_handler
);
7122 FD_ZERO (&input_wait_mask
);
7123 FD_ZERO (&non_keyboard_wait_mask
);
7124 FD_ZERO (&non_process_wait_mask
);
7125 FD_ZERO (&write_mask
);
7126 max_process_desc
= 0;
7127 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7129 #ifdef NON_BLOCKING_CONNECT
7130 FD_ZERO (&connect_wait_mask
);
7131 num_pending_connects
= 0;
7134 #ifdef ADAPTIVE_READ_BUFFERING
7135 process_output_delay_count
= 0;
7136 process_output_skip
= 0;
7139 /* Don't do this, it caused infinite select loops. The display
7140 method should call add_keyboard_wait_descriptor on stdin if it
7143 FD_SET (0, &input_wait_mask
);
7146 Vprocess_alist
= Qnil
;
7148 deleted_pid_list
= Qnil
;
7150 for (i
= 0; i
< MAXDESC
; i
++)
7152 chan_process
[i
] = Qnil
;
7153 proc_buffered_char
[i
] = -1;
7155 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7156 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7157 #ifdef DATAGRAM_SOCKETS
7158 memset (datagram_address
, 0, sizeof datagram_address
);
7162 Lisp_Object subfeatures
= Qnil
;
7163 const struct socket_options
*sopt
;
7165 #define ADD_SUBFEATURE(key, val) \
7166 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7168 #ifdef NON_BLOCKING_CONNECT
7169 ADD_SUBFEATURE (QCnowait
, Qt
);
7171 #ifdef DATAGRAM_SOCKETS
7172 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7174 #ifdef HAVE_SEQPACKET
7175 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7177 #ifdef HAVE_LOCAL_SOCKETS
7178 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7180 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7182 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7184 #ifdef HAVE_GETSOCKNAME
7185 ADD_SUBFEATURE (QCservice
, Qt
);
7187 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7188 ADD_SUBFEATURE (QCserver
, Qt
);
7191 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7192 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7194 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7197 #if defined (DARWIN_OS)
7198 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7199 processes. As such, we only change the default value. */
7202 char const *release
= (STRINGP (Voperating_system_release
)
7203 ? SSDATA (Voperating_system_release
)
7205 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7206 && release
[1] == '.')) {
7207 Vprocess_connection_type
= Qnil
;
7211 #endif /* subprocesses */
7216 syms_of_process (void)
7220 Qprocessp
= intern_c_string ("processp");
7221 staticpro (&Qprocessp
);
7222 Qrun
= intern_c_string ("run");
7224 Qstop
= intern_c_string ("stop");
7226 Qsignal
= intern_c_string ("signal");
7227 staticpro (&Qsignal
);
7229 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7232 Qexit = intern_c_string ("exit");
7233 staticpro (&Qexit); */
7235 Qopen
= intern_c_string ("open");
7237 Qclosed
= intern_c_string ("closed");
7238 staticpro (&Qclosed
);
7239 Qconnect
= intern_c_string ("connect");
7240 staticpro (&Qconnect
);
7241 Qfailed
= intern_c_string ("failed");
7242 staticpro (&Qfailed
);
7243 Qlisten
= intern_c_string ("listen");
7244 staticpro (&Qlisten
);
7245 Qlocal
= intern_c_string ("local");
7246 staticpro (&Qlocal
);
7247 Qipv4
= intern_c_string ("ipv4");
7250 Qipv6
= intern_c_string ("ipv6");
7253 Qdatagram
= intern_c_string ("datagram");
7254 staticpro (&Qdatagram
);
7255 Qseqpacket
= intern_c_string ("seqpacket");
7256 staticpro (&Qseqpacket
);
7258 QCport
= intern_c_string (":port");
7259 staticpro (&QCport
);
7260 QCspeed
= intern_c_string (":speed");
7261 staticpro (&QCspeed
);
7262 QCprocess
= intern_c_string (":process");
7263 staticpro (&QCprocess
);
7265 QCbytesize
= intern_c_string (":bytesize");
7266 staticpro (&QCbytesize
);
7267 QCstopbits
= intern_c_string (":stopbits");
7268 staticpro (&QCstopbits
);
7269 QCparity
= intern_c_string (":parity");
7270 staticpro (&QCparity
);
7271 Qodd
= intern_c_string ("odd");
7273 Qeven
= intern_c_string ("even");
7275 QCflowcontrol
= intern_c_string (":flowcontrol");
7276 staticpro (&QCflowcontrol
);
7277 Qhw
= intern_c_string ("hw");
7279 Qsw
= intern_c_string ("sw");
7281 QCsummary
= intern_c_string (":summary");
7282 staticpro (&QCsummary
);
7284 Qreal
= intern_c_string ("real");
7286 Qnetwork
= intern_c_string ("network");
7287 staticpro (&Qnetwork
);
7288 Qserial
= intern_c_string ("serial");
7289 staticpro (&Qserial
);
7290 QCbuffer
= intern_c_string (":buffer");
7291 staticpro (&QCbuffer
);
7292 QChost
= intern_c_string (":host");
7293 staticpro (&QChost
);
7294 QCservice
= intern_c_string (":service");
7295 staticpro (&QCservice
);
7296 QClocal
= intern_c_string (":local");
7297 staticpro (&QClocal
);
7298 QCremote
= intern_c_string (":remote");
7299 staticpro (&QCremote
);
7300 QCcoding
= intern_c_string (":coding");
7301 staticpro (&QCcoding
);
7302 QCserver
= intern_c_string (":server");
7303 staticpro (&QCserver
);
7304 QCnowait
= intern_c_string (":nowait");
7305 staticpro (&QCnowait
);
7306 QCsentinel
= intern_c_string (":sentinel");
7307 staticpro (&QCsentinel
);
7308 QClog
= intern_c_string (":log");
7310 QCnoquery
= intern_c_string (":noquery");
7311 staticpro (&QCnoquery
);
7312 QCstop
= intern_c_string (":stop");
7313 staticpro (&QCstop
);
7314 QCoptions
= intern_c_string (":options");
7315 staticpro (&QCoptions
);
7316 QCplist
= intern_c_string (":plist");
7317 staticpro (&QCplist
);
7319 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7320 staticpro (&Qlast_nonmenu_event
);
7322 staticpro (&Vprocess_alist
);
7324 staticpro (&deleted_pid_list
);
7327 #endif /* subprocesses */
7329 QCname
= intern_c_string (":name");
7330 staticpro (&QCname
);
7331 QCtype
= intern_c_string (":type");
7332 staticpro (&QCtype
);
7334 Qeuid
= intern_c_string ("euid");
7336 Qegid
= intern_c_string ("egid");
7338 Quser
= intern_c_string ("user");
7340 Qgroup
= intern_c_string ("group");
7341 staticpro (&Qgroup
);
7342 Qcomm
= intern_c_string ("comm");
7344 Qstate
= intern_c_string ("state");
7345 staticpro (&Qstate
);
7346 Qppid
= intern_c_string ("ppid");
7348 Qpgrp
= intern_c_string ("pgrp");
7350 Qsess
= intern_c_string ("sess");
7352 Qttname
= intern_c_string ("ttname");
7353 staticpro (&Qttname
);
7354 Qtpgid
= intern_c_string ("tpgid");
7355 staticpro (&Qtpgid
);
7356 Qminflt
= intern_c_string ("minflt");
7357 staticpro (&Qminflt
);
7358 Qmajflt
= intern_c_string ("majflt");
7359 staticpro (&Qmajflt
);
7360 Qcminflt
= intern_c_string ("cminflt");
7361 staticpro (&Qcminflt
);
7362 Qcmajflt
= intern_c_string ("cmajflt");
7363 staticpro (&Qcmajflt
);
7364 Qutime
= intern_c_string ("utime");
7365 staticpro (&Qutime
);
7366 Qstime
= intern_c_string ("stime");
7367 staticpro (&Qstime
);
7368 Qtime
= intern_c_string ("time");
7370 Qcutime
= intern_c_string ("cutime");
7371 staticpro (&Qcutime
);
7372 Qcstime
= intern_c_string ("cstime");
7373 staticpro (&Qcstime
);
7374 Qctime
= intern_c_string ("ctime");
7375 staticpro (&Qctime
);
7376 Qpri
= intern_c_string ("pri");
7378 Qnice
= intern_c_string ("nice");
7380 Qthcount
= intern_c_string ("thcount");
7381 staticpro (&Qthcount
);
7382 Qstart
= intern_c_string ("start");
7383 staticpro (&Qstart
);
7384 Qvsize
= intern_c_string ("vsize");
7385 staticpro (&Qvsize
);
7386 Qrss
= intern_c_string ("rss");
7388 Qetime
= intern_c_string ("etime");
7389 staticpro (&Qetime
);
7390 Qpcpu
= intern_c_string ("pcpu");
7392 Qpmem
= intern_c_string ("pmem");
7394 Qargs
= intern_c_string ("args");
7397 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7398 doc
: /* *Non-nil means delete processes immediately when they exit.
7399 A value of nil means don't delete them until `list-processes' is run. */);
7401 delete_exited_processes
= 1;
7404 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7405 doc
: /* Control type of device used to communicate with subprocesses.
7406 Values are nil to use a pipe, or t or `pty' to use a pty.
7407 The value has no effect if the system has no ptys or if all ptys are busy:
7408 then a pipe is used in any case.
7409 The value takes effect when `start-process' is called. */);
7410 Vprocess_connection_type
= Qt
;
7412 #ifdef ADAPTIVE_READ_BUFFERING
7413 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7414 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7415 On some systems, when Emacs reads the output from a subprocess, the output data
7416 is read in very small blocks, potentially resulting in very poor performance.
7417 This behavior can be remedied to some extent by setting this variable to a
7418 non-nil value, as it will automatically delay reading from such processes, to
7419 allow them to produce more output before Emacs tries to read it.
7420 If the value is t, the delay is reset after each write to the process; any other
7421 non-nil value means that the delay is not reset on write.
7422 The variable takes effect when `start-process' is called. */);
7423 Vprocess_adaptive_read_buffering
= Qt
;
7426 defsubr (&Sprocessp
);
7427 defsubr (&Sget_process
);
7428 defsubr (&Sdelete_process
);
7429 defsubr (&Sprocess_status
);
7430 defsubr (&Sprocess_exit_status
);
7431 defsubr (&Sprocess_id
);
7432 defsubr (&Sprocess_name
);
7433 defsubr (&Sprocess_tty_name
);
7434 defsubr (&Sprocess_command
);
7435 defsubr (&Sset_process_buffer
);
7436 defsubr (&Sprocess_buffer
);
7437 defsubr (&Sprocess_mark
);
7438 defsubr (&Sset_process_filter
);
7439 defsubr (&Sprocess_filter
);
7440 defsubr (&Sset_process_sentinel
);
7441 defsubr (&Sprocess_sentinel
);
7442 defsubr (&Sset_process_window_size
);
7443 defsubr (&Sset_process_inherit_coding_system_flag
);
7444 defsubr (&Sset_process_query_on_exit_flag
);
7445 defsubr (&Sprocess_query_on_exit_flag
);
7446 defsubr (&Sprocess_contact
);
7447 defsubr (&Sprocess_plist
);
7448 defsubr (&Sset_process_plist
);
7449 defsubr (&Sprocess_list
);
7450 defsubr (&Sstart_process
);
7451 defsubr (&Sserial_process_configure
);
7452 defsubr (&Smake_serial_process
);
7453 defsubr (&Sset_network_process_option
);
7454 defsubr (&Smake_network_process
);
7455 defsubr (&Sformat_network_address
);
7456 #if defined(HAVE_NET_IF_H)
7458 defsubr (&Snetwork_interface_list
);
7460 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7461 defsubr (&Snetwork_interface_info
);
7463 #endif /* defined(HAVE_NET_IF_H) */
7464 #ifdef DATAGRAM_SOCKETS
7465 defsubr (&Sprocess_datagram_address
);
7466 defsubr (&Sset_process_datagram_address
);
7468 defsubr (&Saccept_process_output
);
7469 defsubr (&Sprocess_send_region
);
7470 defsubr (&Sprocess_send_string
);
7471 defsubr (&Sinterrupt_process
);
7472 defsubr (&Skill_process
);
7473 defsubr (&Squit_process
);
7474 defsubr (&Sstop_process
);
7475 defsubr (&Scontinue_process
);
7476 defsubr (&Sprocess_running_child_p
);
7477 defsubr (&Sprocess_send_eof
);
7478 defsubr (&Ssignal_process
);
7479 defsubr (&Swaiting_for_user_input_p
);
7480 defsubr (&Sprocess_type
);
7481 defsubr (&Sset_process_coding_system
);
7482 defsubr (&Sprocess_coding_system
);
7483 defsubr (&Sset_process_filter_multibyte
);
7484 defsubr (&Sprocess_filter_multibyte_p
);
7486 #endif /* subprocesses */
7488 defsubr (&Sget_buffer_process
);
7489 defsubr (&Sprocess_inherit_coding_system_flag
);
7490 defsubr (&Slist_system_processes
);
7491 defsubr (&Sprocess_attributes
);