1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008, 2009, 2010 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/>. */
25 /* This file is split into two parts by the following preprocessor
26 conditional. The 'then' clause contains all of the support for
27 asynchronous subprocesses. The 'else' clause contains stub
28 versions of some of the asynchronous subprocess routines that are
29 often called elsewhere in Emacs, so we don't have to #ifdef the
30 sections that call them. */
38 #include <sys/types.h> /* some typedefs are used in sys/file.h */
42 #ifdef HAVE_INTTYPES_H
54 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
55 #include <sys/socket.h>
57 #include <netinet/in.h>
58 #include <arpa/inet.h>
60 /* Are local (unix) sockets supported? */
61 #if defined (HAVE_SYS_UN_H)
62 #if !defined (AF_LOCAL) && defined (AF_UNIX)
63 #define AF_LOCAL AF_UNIX
66 #define HAVE_LOCAL_SOCKETS
70 #endif /* HAVE_SOCKETS */
72 #if defined(HAVE_SYS_IOCTL_H)
73 #include <sys/ioctl.h>
74 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
76 #endif /* HAVE_PTYS and no O_NDELAY */
77 #endif /* HAVE_SYS_IOCTL_H */
83 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
85 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
86 /* sys/ioctl.h may have been included already */
88 #include <sys/ioctl.h>
99 #include <netinet/in.h>
100 #include <arpa/nameser.h>
110 #include "character.h"
114 #include "termhooks.h"
115 #include "termopts.h"
116 #include "commands.h"
117 #include "keyboard.h"
118 #include "blockinput.h"
119 #include "dispextern.h"
120 #include "composite.h"
123 #if defined (USE_GTK) || defined (HAVE_GCONF)
124 #include "xgselect.h"
125 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
127 Lisp_Object Qprocessp
;
128 Lisp_Object Qrun
, Qstop
, Qsignal
;
129 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
130 Lisp_Object Qlocal
, Qipv4
, Qdatagram
, Qseqpacket
;
131 Lisp_Object Qreal
, Qnetwork
, Qserial
;
135 Lisp_Object QCport
, QCspeed
, QCprocess
;
136 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
137 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
138 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
139 Lisp_Object QClocal
, QCremote
, QCcoding
;
140 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
141 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
142 Lisp_Object Qlast_nonmenu_event
;
143 /* QCfamily is declared and initialized in xfaces.c,
144 QCfilter in keyboard.c. */
145 extern Lisp_Object QCfamily
, QCfilter
;
147 /* Qexit is declared and initialized in eval.c. */
149 /* QCfamily is defined in xfaces.c. */
150 extern Lisp_Object QCfamily
;
151 /* QCfilter is defined in keyboard.c. */
152 extern Lisp_Object QCfilter
;
154 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
155 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
156 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
157 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
160 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
161 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
162 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
163 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
165 #define NETCONN_P(p) 0
166 #define NETCONN1_P(p) 0
167 #define SERIALCONN_P(p) 0
168 #define SERIALCONN1_P(p) 0
169 #endif /* HAVE_SOCKETS */
171 /* Define first descriptor number available for subprocesses. */
172 #define FIRST_PROC_DESC 3
174 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
177 #if !defined (SIGCHLD) && defined (SIGCLD)
178 #define SIGCHLD SIGCLD
181 #include "syssignal.h"
185 extern char *get_operating_system_release ();
187 /* Serial processes require termios or Windows. */
188 #if defined (HAVE_TERMIOS) || defined (WINDOWSNT)
193 /* From sysdep.c or w32.c */
194 extern int serial_open (char *port
);
195 extern void serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
);
202 /* t means use pty, nil means use a pipe,
203 maybe other values to come. */
204 static Lisp_Object Vprocess_connection_type
;
206 /* These next two vars are non-static since sysdep.c uses them in the
207 emulation of `select'. */
208 /* Number of events of change of status of a process. */
210 /* Number of events for which the user or sentinel has been notified. */
213 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
215 #ifdef BROKEN_NON_BLOCKING_CONNECT
216 #undef NON_BLOCKING_CONNECT
218 #ifndef NON_BLOCKING_CONNECT
221 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
222 #if defined (O_NONBLOCK) || defined (O_NDELAY)
223 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
224 #define NON_BLOCKING_CONNECT
225 #endif /* EWOULDBLOCK || EINPROGRESS */
226 #endif /* O_NONBLOCK || O_NDELAY */
227 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
228 #endif /* HAVE_SELECT */
229 #endif /* HAVE_SOCKETS */
230 #endif /* NON_BLOCKING_CONNECT */
231 #endif /* BROKEN_NON_BLOCKING_CONNECT */
233 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
234 this system. We need to read full packets, so we need a
235 "non-destructive" select. So we require either native select,
236 or emulation of select using FIONREAD. */
238 #ifdef BROKEN_DATAGRAM_SOCKETS
239 #undef DATAGRAM_SOCKETS
241 #ifndef DATAGRAM_SOCKETS
243 #if defined (HAVE_SELECT) || defined (FIONREAD)
244 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
245 #define DATAGRAM_SOCKETS
246 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
247 #endif /* HAVE_SELECT || FIONREAD */
248 #endif /* HAVE_SOCKETS */
249 #endif /* DATAGRAM_SOCKETS */
250 #endif /* BROKEN_DATAGRAM_SOCKETS */
252 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
253 # define HAVE_SEQPACKET
256 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
257 #ifdef EMACS_HAS_USECS
258 #define ADAPTIVE_READ_BUFFERING
262 #ifdef ADAPTIVE_READ_BUFFERING
263 #define READ_OUTPUT_DELAY_INCREMENT 10000
264 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
265 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
267 /* Number of processes which have a non-zero read_output_delay,
268 and therefore might be delayed for adaptive read buffering. */
270 static int process_output_delay_count
;
272 /* Non-zero if any process has non-nil read_output_skip. */
274 static int process_output_skip
;
276 /* Non-nil means to delay reading process output to improve buffering.
277 A value of t means that delay is reset after each send, any other
278 non-nil value does not reset the delay. A value of nil disables
279 adaptive read buffering completely. */
280 static Lisp_Object Vprocess_adaptive_read_buffering
;
282 #define process_output_delay_count 0
286 #include "sysselect.h"
288 static int keyboard_bit_set (SELECT_TYPE
*);
289 static void deactivate_process (Lisp_Object
);
290 static void status_notify (struct Lisp_Process
*);
291 static int read_process_output (Lisp_Object
, int);
292 static void create_pty (Lisp_Object
);
294 /* If we support a window system, turn on the code to poll periodically
295 to detect C-g. It isn't actually used when doing interrupt input. */
296 #ifdef HAVE_WINDOW_SYSTEM
297 #define POLL_FOR_INPUT
300 static Lisp_Object
get_process ();
301 static void exec_sentinel ();
303 extern int timers_run
;
305 /* Mask of bits indicating the descriptors that we wait for input on. */
307 static SELECT_TYPE input_wait_mask
;
309 /* Mask that excludes keyboard input descriptor(s). */
311 static SELECT_TYPE non_keyboard_wait_mask
;
313 /* Mask that excludes process input descriptor(s). */
315 static SELECT_TYPE non_process_wait_mask
;
317 /* Mask for the gpm mouse input descriptor. */
319 static SELECT_TYPE gpm_wait_mask
;
321 #ifdef NON_BLOCKING_CONNECT
322 /* Mask of bits indicating the descriptors that we wait for connect to
323 complete on. Once they complete, they are removed from this mask
324 and added to the input_wait_mask and non_keyboard_wait_mask. */
326 static SELECT_TYPE connect_wait_mask
;
328 /* Number of bits set in connect_wait_mask. */
329 static int num_pending_connects
;
331 #define IF_NON_BLOCKING_CONNECT(s) s
333 #define IF_NON_BLOCKING_CONNECT(s)
336 /* The largest descriptor currently in use for a process object. */
337 static int max_process_desc
;
339 /* The largest descriptor currently in use for keyboard input. */
340 static int max_keyboard_desc
;
342 /* The largest descriptor currently in use for gpm mouse input. */
343 static int max_gpm_desc
;
345 /* Nonzero means delete a process right away if it exits. */
346 static int delete_exited_processes
;
348 /* Indexed by descriptor, gives the process (if any) for that descriptor */
349 Lisp_Object chan_process
[MAXDESC
];
351 /* Alist of elements (NAME . PROCESS) */
352 Lisp_Object Vprocess_alist
;
354 /* Buffered-ahead input char from process, indexed by channel.
355 -1 means empty (no char is buffered).
356 Used on sys V where the only way to tell if there is any
357 output from the process is to read at least one char.
358 Always -1 on systems that support FIONREAD. */
360 /* Don't make static; need to access externally. */
361 int proc_buffered_char
[MAXDESC
];
363 /* Table of `struct coding-system' for each process. */
364 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
365 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
367 #ifdef DATAGRAM_SOCKETS
368 /* Table of `partner address' for datagram sockets. */
369 struct sockaddr_and_len
{
372 } datagram_address
[MAXDESC
];
373 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
374 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
376 #define DATAGRAM_CHAN_P(chan) (0)
377 #define DATAGRAM_CONN_P(proc) (0)
380 /* Maximum number of bytes to send to a pty without an eof. */
381 static int pty_max_bytes
;
383 /* Nonzero means don't run process sentinels. This is used
385 int inhibit_sentinels
;
391 /* The file name of the pty opened by allocate_pty. */
393 static char pty_name
[24];
396 /* Compute the Lisp form of the process status, p->status, from
397 the numeric status that was returned by `wait'. */
399 static Lisp_Object
status_convert (int);
403 struct Lisp_Process
*p
;
405 eassert (p
->raw_status_new
);
406 p
->status
= status_convert (p
->raw_status
);
407 p
->raw_status_new
= 0;
410 /* Convert a process status word in Unix format to
411 the list that we use internally. */
414 status_convert (int w
)
417 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
418 else if (WIFEXITED (w
))
419 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
420 WCOREDUMP (w
) ? Qt
: Qnil
));
421 else if (WIFSIGNALED (w
))
422 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
423 WCOREDUMP (w
) ? Qt
: Qnil
));
428 /* Given a status-list, extract the three pieces of information
429 and store them individually through the three pointers. */
432 decode_status (l
, symbol
, code
, coredump
)
450 *code
= XFASTINT (XCAR (tem
));
452 *coredump
= !NILP (tem
);
456 /* Return a string describing a process status list. */
460 struct Lisp_Process
*p
;
462 Lisp_Object status
= p
->status
;
465 Lisp_Object string
, string2
;
467 decode_status (status
, &symbol
, &code
, &coredump
);
469 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
472 synchronize_system_messages_locale ();
473 signame
= strsignal (code
);
475 string
= build_string ("unknown");
480 string
= make_unibyte_string (signame
, strlen (signame
));
481 if (! NILP (Vlocale_coding_system
))
482 string
= (code_convert_string_norecord
483 (string
, Vlocale_coding_system
, 0));
484 c1
= STRING_CHAR ((char *) SDATA (string
));
487 Faset (string
, make_number (0), make_number (c2
));
489 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
490 return concat2 (string
, string2
);
492 else if (EQ (symbol
, Qexit
))
495 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
497 return build_string ("finished\n");
498 string
= Fnumber_to_string (make_number (code
));
499 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
500 return concat3 (build_string ("exited abnormally with code "),
503 else if (EQ (symbol
, Qfailed
))
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string ("\n");
507 return concat3 (build_string ("failed with code "),
511 return Fcopy_sequence (Fsymbol_name (symbol
));
516 /* Open an available pty, returning a file descriptor.
517 Return -1 on failure.
518 The file name of the terminal corresponding to the pty
519 is left in the variable pty_name. */
530 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
531 for (i
= 0; i
< 16; i
++)
534 struct stat stb
; /* Used in some PTY_OPEN. */
535 #ifdef PTY_NAME_SPRINTF
538 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
539 #endif /* no PTY_NAME_SPRINTF */
543 #else /* no PTY_OPEN */
545 { /* Some systems name their pseudoterminals so that there are gaps in
546 the usual sequence - for example, on HP9000/S700 systems, there
547 are no pseudoterminals with names ending in 'f'. So we wait for
548 three failures in a row before deciding that we've reached the
550 int failed_count
= 0;
552 if (stat (pty_name
, &stb
) < 0)
555 if (failed_count
>= 3)
562 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
564 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
567 #endif /* no PTY_OPEN */
571 /* check to make certain that both sides are available
572 this avoids a nasty yet stupid bug in rlogins */
573 #ifdef PTY_TTY_NAME_SPRINTF
576 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
577 #endif /* no PTY_TTY_NAME_SPRINTF */
578 if (access (pty_name
, 6) != 0)
593 #endif /* HAVE_PTYS */
599 register Lisp_Object val
, tem
, name1
;
600 register struct Lisp_Process
*p
;
604 p
= allocate_process ();
612 p
->raw_status_new
= 0;
614 p
->mark
= Fmake_marker ();
615 p
->kill_without_query
= 0;
617 #ifdef ADAPTIVE_READ_BUFFERING
618 p
->adaptive_read_buffering
= 0;
619 p
->read_output_delay
= 0;
620 p
->read_output_skip
= 0;
623 /* If name is already in use, modify it until it is unused. */
628 tem
= Fget_process (name1
);
629 if (NILP (tem
)) break;
630 sprintf (suffix
, "<%d>", i
);
631 name1
= concat2 (name
, build_string (suffix
));
635 XSETPROCESS (val
, p
);
636 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
641 remove_process (proc
)
642 register Lisp_Object proc
;
644 register Lisp_Object pair
;
646 pair
= Frassq (proc
, Vprocess_alist
);
647 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
649 deactivate_process (proc
);
652 /* Setup coding systems of PROCESS. */
655 setup_process_coding_systems (process
)
658 struct Lisp_Process
*p
= XPROCESS (process
);
660 int outch
= p
->outfd
;
661 Lisp_Object coding_system
;
663 if (inch
< 0 || outch
< 0)
666 if (!proc_decode_coding_system
[inch
])
667 proc_decode_coding_system
[inch
]
668 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
669 coding_system
= p
->decode_coding_system
;
670 if (! NILP (p
->filter
))
672 else if (BUFFERP (p
->buffer
))
674 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
675 coding_system
= raw_text_coding_system (coding_system
);
677 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
679 if (!proc_encode_coding_system
[outch
])
680 proc_encode_coding_system
[outch
]
681 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
682 setup_coding_system (p
->encode_coding_system
,
683 proc_encode_coding_system
[outch
]);
686 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
687 doc
: /* Return t if OBJECT is a process. */)
691 return PROCESSP (object
) ? Qt
: Qnil
;
694 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
695 doc
: /* Return the process named NAME, or nil if there is none. */)
697 register Lisp_Object name
;
702 return Fcdr (Fassoc (name
, Vprocess_alist
));
705 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
706 doc
: /* Return the (or a) process associated with BUFFER.
707 BUFFER may be a buffer or the name of one. */)
709 register Lisp_Object buffer
;
711 register Lisp_Object buf
, tail
, proc
;
713 if (NILP (buffer
)) return Qnil
;
714 buf
= Fget_buffer (buffer
);
715 if (NILP (buf
)) return Qnil
;
717 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
719 proc
= Fcdr (XCAR (tail
));
720 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
726 /* This is how commands for the user decode process arguments. It
727 accepts a process, a process name, a buffer, a buffer name, or nil.
728 Buffers denote the first process in the buffer, and nil denotes the
733 register Lisp_Object name
;
735 register Lisp_Object proc
, obj
;
738 obj
= Fget_process (name
);
740 obj
= Fget_buffer (name
);
742 error ("Process %s does not exist", SDATA (name
));
744 else if (NILP (name
))
745 obj
= Fcurrent_buffer ();
749 /* Now obj should be either a buffer object or a process object.
753 proc
= Fget_buffer_process (obj
);
755 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
767 /* Fdelete_process promises to immediately forget about the process, but in
768 reality, Emacs needs to remember those processes until they have been
769 treated by sigchld_handler; otherwise this handler would consider the
770 process as being synchronous and say that the synchronous process is
772 static Lisp_Object deleted_pid_list
;
775 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
776 doc
: /* Delete PROCESS: kill it and forget about it immediately.
777 PROCESS may be a process, a buffer, the name of a process or buffer, or
778 nil, indicating the current buffer's process. */)
780 register Lisp_Object process
;
782 register struct Lisp_Process
*p
;
784 process
= get_process (process
);
785 p
= XPROCESS (process
);
787 p
->raw_status_new
= 0;
788 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
790 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
791 p
->tick
= ++process_tick
;
793 redisplay_preserve_echo_area (13);
795 else if (p
->infd
>= 0)
799 /* Assignment to EMACS_INT stops GCC whining about limited range
801 EMACS_INT pid
= p
->pid
;
803 /* No problem storing the pid here, as it is still in Vprocess_alist. */
804 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
805 /* GC treated elements set to nil. */
806 Fdelq (Qnil
, deleted_pid_list
));
807 /* If the process has already signaled, remove it from the list. */
808 if (p
->raw_status_new
)
811 if (CONSP (p
->status
))
812 symbol
= XCAR (p
->status
);
813 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
815 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
819 Fkill_process (process
, Qnil
);
820 /* Do this now, since remove_process will make sigchld_handler do nothing. */
822 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
823 p
->tick
= ++process_tick
;
825 redisplay_preserve_echo_area (13);
828 remove_process (process
);
832 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
833 doc
: /* Return the status of PROCESS.
834 The returned value is one of the following symbols:
835 run -- for a process that is running.
836 stop -- for a process stopped but continuable.
837 exit -- for a process that has exited.
838 signal -- for a process that has got a fatal signal.
839 open -- for a network stream connection that is open.
840 listen -- for a network stream server that is listening.
841 closed -- for a network stream connection that is closed.
842 connect -- when waiting for a non-blocking connection to complete.
843 failed -- when a non-blocking connection has failed.
844 nil -- if arg is a process name and no such process exists.
845 PROCESS may be a process, a buffer, the name of a process, or
846 nil, indicating the current buffer's process. */)
848 register Lisp_Object process
;
850 register struct Lisp_Process
*p
;
851 register Lisp_Object status
;
853 if (STRINGP (process
))
854 process
= Fget_process (process
);
856 process
= get_process (process
);
861 p
= XPROCESS (process
);
862 if (p
->raw_status_new
)
866 status
= XCAR (status
);
867 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
869 if (EQ (status
, Qexit
))
871 else if (EQ (p
->command
, Qt
))
873 else if (EQ (status
, Qrun
))
879 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
881 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
882 If PROCESS has not yet exited or died, return 0. */)
884 register Lisp_Object process
;
886 CHECK_PROCESS (process
);
887 if (XPROCESS (process
)->raw_status_new
)
888 update_status (XPROCESS (process
));
889 if (CONSP (XPROCESS (process
)->status
))
890 return XCAR (XCDR (XPROCESS (process
)->status
));
891 return make_number (0);
894 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
895 doc
: /* Return the process id of PROCESS.
896 This is the pid of the external process which PROCESS uses or talks to.
897 For a network connection, this value is nil. */)
899 register Lisp_Object process
;
901 /* Assignment to EMACS_INT stops GCC whining about limited range of
905 CHECK_PROCESS (process
);
906 pid
= XPROCESS (process
)->pid
;
907 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
910 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
911 doc
: /* Return the name of PROCESS, as a string.
912 This is the name of the program invoked in PROCESS,
913 possibly modified to make it unique among process names. */)
915 register Lisp_Object process
;
917 CHECK_PROCESS (process
);
918 return XPROCESS (process
)->name
;
921 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
922 doc
: /* Return the command that was executed to start PROCESS.
923 This is a list of strings, the first string being the program executed
924 and the rest of the strings being the arguments given to it.
925 For a network or serial process, this is nil (process is running) or t
926 \(process is stopped). */)
928 register Lisp_Object process
;
930 CHECK_PROCESS (process
);
931 return XPROCESS (process
)->command
;
934 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
935 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
936 This is the terminal that the process itself reads and writes on,
937 not the name of the pty that Emacs uses to talk with that terminal. */)
939 register Lisp_Object process
;
941 CHECK_PROCESS (process
);
942 return XPROCESS (process
)->tty_name
;
945 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
947 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
949 register Lisp_Object process
, buffer
;
951 struct Lisp_Process
*p
;
953 CHECK_PROCESS (process
);
955 CHECK_BUFFER (buffer
);
956 p
= XPROCESS (process
);
958 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
959 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
960 setup_process_coding_systems (process
);
964 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
966 doc
: /* Return the buffer PROCESS is associated with.
967 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
969 register Lisp_Object process
;
971 CHECK_PROCESS (process
);
972 return XPROCESS (process
)->buffer
;
975 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
977 doc
: /* Return the marker for the end of the last output from PROCESS. */)
979 register Lisp_Object process
;
981 CHECK_PROCESS (process
);
982 return XPROCESS (process
)->mark
;
985 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
987 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
988 A value of t means stop accepting output from the process.
990 When a process has a filter, its buffer is not used for output.
991 Instead, each time it does output, the entire string of output is
992 passed to the filter.
994 The filter gets two arguments: the process and the string of output.
995 The string argument is normally a multibyte string, except:
996 - if the process' input coding system is no-conversion or raw-text,
997 it is a unibyte string (the non-converted input), or else
998 - if `default-enable-multibyte-characters' is nil, it is a unibyte
999 string (the result of converting the decoded input multibyte
1000 string to unibyte with `string-make-unibyte'). */)
1002 register Lisp_Object process
, filter
;
1004 struct Lisp_Process
*p
;
1006 CHECK_PROCESS (process
);
1007 p
= XPROCESS (process
);
1009 /* Don't signal an error if the process' input file descriptor
1010 is closed. This could make debugging Lisp more difficult,
1011 for example when doing something like
1013 (setq process (start-process ...))
1015 (set-process-filter process ...) */
1019 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1021 FD_CLR (p
->infd
, &input_wait_mask
);
1022 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1024 else if (EQ (p
->filter
, Qt
)
1025 /* Network or serial process not stopped: */
1026 && !EQ (p
->command
, Qt
))
1028 FD_SET (p
->infd
, &input_wait_mask
);
1029 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1034 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1035 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1036 setup_process_coding_systems (process
);
1040 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1042 doc
: /* Returns the filter function of PROCESS; nil if none.
1043 See `set-process-filter' for more info on filter functions. */)
1045 register Lisp_Object process
;
1047 CHECK_PROCESS (process
);
1048 return XPROCESS (process
)->filter
;
1051 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1053 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1054 The sentinel is called as a function when the process changes state.
1055 It gets two arguments: the process, and a string describing the change. */)
1057 register Lisp_Object process
, sentinel
;
1059 struct Lisp_Process
*p
;
1061 CHECK_PROCESS (process
);
1062 p
= XPROCESS (process
);
1064 p
->sentinel
= sentinel
;
1065 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1066 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1070 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1072 doc
: /* Return the sentinel of PROCESS; nil if none.
1073 See `set-process-sentinel' for more info on sentinels. */)
1075 register Lisp_Object process
;
1077 CHECK_PROCESS (process
);
1078 return XPROCESS (process
)->sentinel
;
1081 DEFUN ("set-process-window-size", Fset_process_window_size
,
1082 Sset_process_window_size
, 3, 3, 0,
1083 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1084 (process
, height
, width
)
1085 register Lisp_Object process
, height
, width
;
1087 CHECK_PROCESS (process
);
1088 CHECK_NATNUM (height
);
1089 CHECK_NATNUM (width
);
1091 if (XPROCESS (process
)->infd
< 0
1092 || set_window_size (XPROCESS (process
)->infd
,
1093 XINT (height
), XINT (width
)) <= 0)
1099 DEFUN ("set-process-inherit-coding-system-flag",
1100 Fset_process_inherit_coding_system_flag
,
1101 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1102 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1103 If the second argument FLAG is non-nil, then the variable
1104 `buffer-file-coding-system' of the buffer associated with PROCESS
1105 will be bound to the value of the coding system used to decode
1108 This is useful when the coding system specified for the process buffer
1109 leaves either the character code conversion or the end-of-line conversion
1110 unspecified, or if the coding system used to decode the process output
1111 is more appropriate for saving the process buffer.
1113 Binding the variable `inherit-process-coding-system' to non-nil before
1114 starting the process is an alternative way of setting the inherit flag
1115 for the process which will run. */)
1117 register Lisp_Object process
, flag
;
1119 CHECK_PROCESS (process
);
1120 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1124 DEFUN ("process-inherit-coding-system-flag",
1125 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1127 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1128 If this flag is t, `buffer-file-coding-system' of the buffer
1129 associated with PROCESS will inherit the coding system used to decode
1130 the process output. */)
1132 register Lisp_Object process
;
1134 CHECK_PROCESS (process
);
1135 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1138 DEFUN ("set-process-query-on-exit-flag",
1139 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1141 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1142 If the second argument FLAG is non-nil, Emacs will query the user before
1143 exiting or killing a buffer if PROCESS is running. */)
1145 register Lisp_Object process
, flag
;
1147 CHECK_PROCESS (process
);
1148 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1152 DEFUN ("process-query-on-exit-flag",
1153 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1155 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1157 register Lisp_Object process
;
1159 CHECK_PROCESS (process
);
1160 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1163 #ifdef DATAGRAM_SOCKETS
1164 Lisp_Object
Fprocess_datagram_address ();
1167 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1169 doc
: /* Return the contact info of PROCESS; t for a real child.
1170 For a network or serial connection, the value depends on the optional
1171 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1172 SERVICE) for a network connection or (PORT SPEED) for a serial
1173 connection. If KEY is t, the complete contact information for the
1174 connection is returned, else the specific value for the keyword KEY is
1175 returned. See `make-network-process' or `make-serial-process' for a
1176 list of keywords. */)
1178 register Lisp_Object process
, key
;
1180 Lisp_Object contact
;
1182 CHECK_PROCESS (process
);
1183 contact
= XPROCESS (process
)->childp
;
1185 #ifdef DATAGRAM_SOCKETS
1186 if (DATAGRAM_CONN_P (process
)
1187 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1188 contact
= Fplist_put (contact
, QCremote
,
1189 Fprocess_datagram_address (process
));
1192 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1194 if (NILP (key
) && NETCONN_P (process
))
1195 return Fcons (Fplist_get (contact
, QChost
),
1196 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1197 if (NILP (key
) && SERIALCONN_P (process
))
1198 return Fcons (Fplist_get (contact
, QCport
),
1199 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1200 return Fplist_get (contact
, key
);
1203 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1205 doc
: /* Return the plist of PROCESS. */)
1207 register Lisp_Object process
;
1209 CHECK_PROCESS (process
);
1210 return XPROCESS (process
)->plist
;
1213 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1215 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1217 register Lisp_Object process
, plist
;
1219 CHECK_PROCESS (process
);
1222 XPROCESS (process
)->plist
= plist
;
1226 #if 0 /* Turned off because we don't currently record this info
1227 in the process. Perhaps add it. */
1228 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1229 doc
: /* Return the connection type of PROCESS.
1230 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1231 a socket connection. */)
1233 Lisp_Object process
;
1235 return XPROCESS (process
)->type
;
1239 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1240 doc
: /* Return the connection type of PROCESS.
1241 The value is either the symbol `real', `network', or `serial'.
1242 PROCESS may be a process, a buffer, the name of a process or buffer, or
1243 nil, indicating the current buffer's process. */)
1245 Lisp_Object process
;
1248 proc
= get_process (process
);
1249 return XPROCESS (proc
)->type
;
1253 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1255 doc
: /* Convert network ADDRESS from internal format to a string.
1256 A 4 or 5 element vector represents an IPv4 address (with port number).
1257 An 8 or 9 element vector represents an IPv6 address (with port number).
1258 If optional second argument OMIT-PORT is non-nil, don't include a port
1259 number in the string, even when present in ADDRESS.
1260 Returns nil if format of ADDRESS is invalid. */)
1261 (address
, omit_port
)
1262 Lisp_Object address
, omit_port
;
1267 if (STRINGP (address
)) /* AF_LOCAL */
1270 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1272 register struct Lisp_Vector
*p
= XVECTOR (address
);
1273 Lisp_Object args
[10];
1276 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1278 args
[0] = build_string ("%d.%d.%d.%d");
1281 else if (p
->size
== 5)
1283 args
[0] = build_string ("%d.%d.%d.%d:%d");
1286 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1288 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1291 else if (p
->size
== 9)
1293 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1299 for (i
= 0; i
< nargs
; i
++)
1301 EMACS_INT element
= XINT (p
->contents
[i
]);
1303 if (element
< 0 || element
> 65535)
1306 if (nargs
<= 5 /* IPv4 */
1307 && i
< 4 /* host, not port */
1311 args
[i
+1] = p
->contents
[i
];
1314 return Fformat (nargs
+1, args
);
1317 if (CONSP (address
))
1319 Lisp_Object args
[2];
1320 args
[0] = build_string ("<Family %d>");
1321 args
[1] = Fcar (address
);
1322 return Fformat (2, args
);
1330 list_processes_1 (query_only
)
1331 Lisp_Object query_only
;
1333 register Lisp_Object tail
, tem
;
1334 Lisp_Object proc
, minspace
, tem1
;
1335 register struct Lisp_Process
*p
;
1337 int w_proc
, w_buffer
, w_tty
;
1339 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1341 w_proc
= 4; /* Proc */
1342 w_buffer
= 6; /* Buffer */
1343 w_tty
= 0; /* Omit if no ttys */
1345 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1349 proc
= Fcdr (XCAR (tail
));
1350 p
= XPROCESS (proc
);
1353 if (!NILP (query_only
) && p
->kill_without_query
)
1355 if (STRINGP (p
->name
)
1356 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1358 if (!NILP (p
->buffer
))
1360 if (NILP (XBUFFER (p
->buffer
)->name
))
1363 w_buffer
= 8; /* (Killed) */
1365 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1368 if (STRINGP (p
->tty_name
)
1369 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1373 XSETFASTINT (i_status
, w_proc
+ 1);
1374 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1377 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1378 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1383 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1386 XSETFASTINT (minspace
, 1);
1388 set_buffer_internal (XBUFFER (Vstandard_output
));
1389 current_buffer
->undo_list
= Qt
;
1391 current_buffer
->truncate_lines
= Qt
;
1393 write_string ("Proc", -1);
1394 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1395 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1398 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1400 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1401 write_string ("\n", -1);
1403 write_string ("----", -1);
1404 Findent_to (i_status
, minspace
); write_string ("------", -1);
1405 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1408 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1410 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1411 write_string ("\n", -1);
1413 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1417 proc
= Fcdr (XCAR (tail
));
1418 p
= XPROCESS (proc
);
1421 if (!NILP (query_only
) && p
->kill_without_query
)
1424 Finsert (1, &p
->name
);
1425 Findent_to (i_status
, minspace
);
1427 if (p
->raw_status_new
)
1430 if (CONSP (p
->status
))
1431 symbol
= XCAR (p
->status
);
1433 if (EQ (symbol
, Qsignal
))
1436 tem
= Fcar (Fcdr (p
->status
));
1437 Fprinc (symbol
, Qnil
);
1439 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1441 if (EQ (symbol
, Qexit
))
1442 write_string ("closed", -1);
1443 else if (EQ (p
->command
, Qt
))
1444 write_string ("stopped", -1);
1445 else if (EQ (symbol
, Qrun
))
1446 write_string ("open", -1);
1448 Fprinc (symbol
, Qnil
);
1450 else if (SERIALCONN1_P (p
))
1452 write_string ("running", -1);
1455 Fprinc (symbol
, Qnil
);
1457 if (EQ (symbol
, Qexit
))
1460 tem
= Fcar (Fcdr (p
->status
));
1463 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1464 write_string (tembuf
, -1);
1468 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1471 Findent_to (i_buffer
, minspace
);
1472 if (NILP (p
->buffer
))
1473 insert_string ("(none)");
1474 else if (NILP (XBUFFER (p
->buffer
)->name
))
1475 insert_string ("(Killed)");
1477 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1481 Findent_to (i_tty
, minspace
);
1482 if (STRINGP (p
->tty_name
))
1483 Finsert (1, &p
->tty_name
);
1486 Findent_to (i_command
, minspace
);
1488 if (EQ (p
->status
, Qlisten
))
1490 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1491 if (INTEGERP (port
))
1492 port
= Fnumber_to_string (port
);
1494 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1495 sprintf (tembuf
, "(network %s server on %s)\n",
1496 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1497 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1498 insert_string (tembuf
);
1500 else if (NETCONN1_P (p
))
1502 /* For a local socket, there is no host name,
1503 so display service instead. */
1504 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1505 if (!STRINGP (host
))
1507 host
= Fplist_get (p
->childp
, QCservice
);
1508 if (INTEGERP (host
))
1509 host
= Fnumber_to_string (host
);
1512 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1513 sprintf (tembuf
, "(network %s connection to %s)\n",
1514 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1515 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1516 insert_string (tembuf
);
1518 else if (SERIALCONN1_P (p
))
1520 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1521 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1522 insert_string ("(serial port ");
1524 insert_string (SDATA (port
));
1526 insert_string ("?");
1527 if (INTEGERP (speed
))
1529 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1530 insert_string (tembuf
);
1532 insert_string (")\n");
1546 insert_string (" ");
1548 insert_string ("\n");
1553 status_notify (NULL
);
1554 redisplay_preserve_echo_area (13);
1559 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1560 doc
: /* Display a list of all processes.
1561 If optional argument QUERY-ONLY is non-nil, only processes with
1562 the query-on-exit flag set will be listed.
1563 Any process listed as exited or signaled is actually eliminated
1564 after the listing is made. */)
1566 Lisp_Object query_only
;
1568 internal_with_output_to_temp_buffer ("*Process List*",
1569 list_processes_1
, query_only
);
1573 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1574 doc
: /* Return a list of all processes. */)
1577 return Fmapcar (Qcdr
, Vprocess_alist
);
1580 /* Starting asynchronous inferior processes. */
1582 static Lisp_Object
start_process_unwind ();
1584 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1585 doc
: /* Start a program in a subprocess. Return the process object for it.
1586 NAME is name for process. It is modified if necessary to make it unique.
1587 BUFFER is the buffer (or buffer name) to associate with the process.
1589 Process output (both standard output and standard error streams) goes
1590 at end of BUFFER, unless you specify an output stream or filter
1591 function to handle the output. BUFFER may also be nil, meaning that
1592 this process is not associated with any buffer.
1594 PROGRAM is the program file name. It is searched for in PATH. If
1595 nil, just associate a pty with the buffer. Remaining arguments are
1596 strings to give program as arguments.
1598 If you want to separate standard output from standard error, invoke
1599 the command through a shell and redirect one of them using the shell
1602 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1605 register Lisp_Object
*args
;
1607 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1608 register unsigned char **new_argv
;
1610 int count
= SPECPDL_INDEX ();
1614 buffer
= Fget_buffer_create (buffer
);
1616 /* Make sure that the child will be able to chdir to the current
1617 buffer's current directory, or its unhandled equivalent. We
1618 can't just have the child check for an error when it does the
1619 chdir, since it's in a vfork.
1621 We have to GCPRO around this because Fexpand_file_name and
1622 Funhandled_file_name_directory might call a file name handling
1623 function. The argument list is protected by the caller, so all
1624 we really have to worry about is buffer. */
1626 struct gcpro gcpro1
, gcpro2
;
1628 current_dir
= current_buffer
->directory
;
1630 GCPRO2 (buffer
, current_dir
);
1632 current_dir
= Funhandled_file_name_directory (current_dir
);
1633 if (NILP (current_dir
))
1634 /* If the file name handler says that current_dir is unreachable, use
1635 a sensible default. */
1636 current_dir
= build_string ("~/");
1637 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1638 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1639 report_file_error ("Setting current directory",
1640 Fcons (current_buffer
->directory
, Qnil
));
1646 CHECK_STRING (name
);
1650 if (!NILP (program
))
1651 CHECK_STRING (program
);
1653 proc
= make_process (name
);
1654 /* If an error occurs and we can't start the process, we want to
1655 remove it from the process list. This means that each error
1656 check in create_process doesn't need to call remove_process
1657 itself; it's all taken care of here. */
1658 record_unwind_protect (start_process_unwind
, proc
);
1660 XPROCESS (proc
)->childp
= Qt
;
1661 XPROCESS (proc
)->plist
= Qnil
;
1662 XPROCESS (proc
)->type
= Qreal
;
1663 XPROCESS (proc
)->buffer
= buffer
;
1664 XPROCESS (proc
)->sentinel
= Qnil
;
1665 XPROCESS (proc
)->filter
= Qnil
;
1666 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1668 #ifdef ADAPTIVE_READ_BUFFERING
1669 XPROCESS (proc
)->adaptive_read_buffering
1670 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1671 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1674 /* Make the process marker point into the process buffer (if any). */
1675 if (BUFFERP (buffer
))
1676 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1677 BUF_ZV (XBUFFER (buffer
)),
1678 BUF_ZV_BYTE (XBUFFER (buffer
)));
1681 /* Decide coding systems for communicating with the process. Here
1682 we don't setup the structure coding_system nor pay attention to
1683 unibyte mode. They are done in create_process. */
1685 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1686 Lisp_Object coding_systems
= Qt
;
1687 Lisp_Object val
, *args2
;
1688 struct gcpro gcpro1
, gcpro2
;
1690 val
= Vcoding_system_for_read
;
1693 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1694 args2
[0] = Qstart_process
;
1695 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1696 GCPRO2 (proc
, current_dir
);
1697 if (!NILP (program
))
1698 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1700 if (CONSP (coding_systems
))
1701 val
= XCAR (coding_systems
);
1702 else if (CONSP (Vdefault_process_coding_system
))
1703 val
= XCAR (Vdefault_process_coding_system
);
1705 XPROCESS (proc
)->decode_coding_system
= val
;
1707 val
= Vcoding_system_for_write
;
1710 if (EQ (coding_systems
, Qt
))
1712 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1713 args2
[0] = Qstart_process
;
1714 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1715 GCPRO2 (proc
, current_dir
);
1716 if (!NILP (program
))
1717 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1720 if (CONSP (coding_systems
))
1721 val
= XCDR (coding_systems
);
1722 else if (CONSP (Vdefault_process_coding_system
))
1723 val
= XCDR (Vdefault_process_coding_system
);
1725 XPROCESS (proc
)->encode_coding_system
= val
;
1729 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1730 XPROCESS (proc
)->decoding_carryover
= 0;
1731 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1733 XPROCESS (proc
)->inherit_coding_system_flag
1734 = !(NILP (buffer
) || !inherit_process_coding_system
);
1736 if (!NILP (program
))
1738 /* If program file name is not absolute, search our path for it.
1739 Put the name we will really use in TEM. */
1740 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1741 && !(SCHARS (program
) > 1
1742 && IS_DEVICE_SEP (SREF (program
, 1))))
1744 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1747 GCPRO4 (name
, program
, buffer
, current_dir
);
1748 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1751 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1752 tem
= Fexpand_file_name (tem
, Qnil
);
1756 if (!NILP (Ffile_directory_p (program
)))
1757 error ("Specified program for new process is a directory");
1761 /* If program file name starts with /: for quoting a magic name,
1763 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1764 && SREF (tem
, 1) == ':')
1765 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1768 struct gcpro gcpro1
;
1771 /* Encode the file name and put it in NEW_ARGV.
1772 That's where the child will use it to execute the program. */
1773 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1775 /* Here we encode arguments by the coding system used for sending
1776 data to the process. We don't support using different coding
1777 systems for encoding arguments and for encoding data sent to the
1780 for (i
= 3; i
< nargs
; i
++)
1782 tem
= Fcons (args
[i
], tem
);
1783 CHECK_STRING (XCAR (tem
));
1784 if (STRING_MULTIBYTE (XCAR (tem
)))
1786 code_convert_string_norecord
1787 (XCAR (tem
), XPROCESS (proc
)->encode_coding_system
, 1));
1793 /* Now that everything is encoded we can collect the strings into
1795 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1796 new_argv
[nargs
- 2] = 0;
1798 for (i
= nargs
- 3; i
>= 0; i
--)
1800 new_argv
[i
] = SDATA (XCAR (tem
));
1804 create_process (proc
, (char **) new_argv
, current_dir
);
1809 return unbind_to (count
, proc
);
1812 /* This function is the unwind_protect form for Fstart_process. If
1813 PROC doesn't have its pid set, then we know someone has signaled
1814 an error and the process wasn't started successfully, so we should
1815 remove it from the process list. */
1817 start_process_unwind (proc
)
1820 if (!PROCESSP (proc
))
1823 /* Was PROC started successfully? */
1824 if (XPROCESS (proc
)->pid
== -1)
1825 remove_process (proc
);
1831 create_process_1 (timer
)
1832 struct atimer
*timer
;
1834 /* Nothing to do. */
1838 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1841 /* Mimic blocking of signals on system V, which doesn't really have it. */
1843 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1844 int sigchld_deferred
;
1847 create_process_sigchld ()
1849 signal (SIGCHLD
, create_process_sigchld
);
1851 sigchld_deferred
= 1;
1858 create_process (process
, new_argv
, current_dir
)
1859 Lisp_Object process
;
1861 Lisp_Object current_dir
;
1863 int inchannel
, outchannel
;
1866 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1867 int wait_child_setup
[2];
1871 struct sigaction sigint_action
;
1872 struct sigaction sigquit_action
;
1874 struct sigaction sighup_action
;
1876 /* Use volatile to protect variables from being clobbered by longjmp. */
1877 volatile int forkin
, forkout
;
1878 volatile int pty_flag
= 0;
1880 extern char **environ
;
1883 inchannel
= outchannel
= -1;
1886 if (!NILP (Vprocess_connection_type
))
1887 outchannel
= inchannel
= allocate_pty ();
1891 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1892 /* On most USG systems it does not work to open the pty's tty here,
1893 then close it and reopen it in the child. */
1895 /* Don't let this terminal become our controlling terminal
1896 (in case we don't have one). */
1897 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1899 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1902 report_file_error ("Opening pty", Qnil
);
1904 forkin
= forkout
= -1;
1905 #endif /* not USG, or USG_SUBTTY_WORKS */
1909 #endif /* HAVE_PTYS */
1914 report_file_error ("Creating pipe", Qnil
);
1920 emacs_close (inchannel
);
1921 emacs_close (forkout
);
1922 report_file_error ("Creating pipe", Qnil
);
1928 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1932 tem
= pipe (wait_child_setup
);
1934 report_file_error ("Creating pipe", Qnil
);
1935 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1937 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1940 emacs_close (wait_child_setup
[0]);
1941 emacs_close (wait_child_setup
[1]);
1942 report_file_error ("Setting file descriptor flags", Qnil
);
1948 /* Replaced by close_process_descs */
1949 set_exclusive_use (inchannel
);
1950 set_exclusive_use (outchannel
);
1954 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1955 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1958 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1959 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1963 /* Record this as an active process, with its channels.
1964 As a result, child_setup will close Emacs's side of the pipes. */
1965 chan_process
[inchannel
] = process
;
1966 XPROCESS (process
)->infd
= inchannel
;
1967 XPROCESS (process
)->outfd
= outchannel
;
1969 /* Previously we recorded the tty descriptor used in the subprocess.
1970 It was only used for getting the foreground tty process, so now
1971 we just reopen the device (see emacs_get_tty_pgrp) as this is
1972 more portable (see USG_SUBTTY_WORKS above). */
1974 XPROCESS (process
)->pty_flag
= pty_flag
;
1975 XPROCESS (process
)->status
= Qrun
;
1976 setup_process_coding_systems (process
);
1978 /* Delay interrupts until we have a chance to store
1979 the new fork's pid in its process structure */
1980 sigemptyset (&blocked
);
1982 sigaddset (&blocked
, SIGCHLD
);
1984 #ifdef HAVE_WORKING_VFORK
1985 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1986 this sets the parent's signal handlers as well as the child's.
1987 So delay all interrupts whose handlers the child might munge,
1988 and record the current handlers so they can be restored later. */
1989 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1990 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1992 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1994 #endif /* HAVE_WORKING_VFORK */
1995 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1997 FD_SET (inchannel
, &input_wait_mask
);
1998 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1999 if (inchannel
> max_process_desc
)
2000 max_process_desc
= inchannel
;
2002 /* Until we store the proper pid, enable sigchld_handler
2003 to recognize an unknown pid as standing for this process.
2004 It is very important not to let this `marker' value stay
2005 in the table after this function has returned; if it does
2006 it might cause call-process to hang and subsequent asynchronous
2007 processes to get their return values scrambled. */
2008 XPROCESS (process
)->pid
= -1;
2013 /* child_setup must clobber environ on systems with true vfork.
2014 Protect it from permanent change. */
2015 char **save_environ
= environ
;
2017 current_dir
= ENCODE_FILE (current_dir
);
2022 #endif /* not WINDOWSNT */
2024 int xforkin
= forkin
;
2025 int xforkout
= forkout
;
2027 #if 0 /* This was probably a mistake--it duplicates code later on,
2028 but fails to handle all the cases. */
2029 /* Make sure SIGCHLD is not blocked in the child. */
2030 sigsetmask (SIGEMPTYMASK
);
2033 /* Make the pty be the controlling terminal of the process. */
2035 /* First, disconnect its current controlling terminal. */
2037 /* We tried doing setsid only if pty_flag, but it caused
2038 process_set_signal to fail on SGI when using a pipe. */
2040 /* Make the pty's terminal the controlling terminal. */
2041 if (pty_flag
&& xforkin
>= 0)
2044 /* We ignore the return value
2045 because faith@cs.unc.edu says that is necessary on Linux. */
2046 ioctl (xforkin
, TIOCSCTTY
, 0);
2049 #else /* not HAVE_SETSID */
2051 /* It's very important to call setpgrp here and no time
2052 afterwards. Otherwise, we lose our controlling tty which
2053 is set when we open the pty. */
2056 #endif /* not HAVE_SETSID */
2057 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2058 if (pty_flag
&& xforkin
>= 0)
2061 tcgetattr (xforkin
, &t
);
2063 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2064 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2067 #if defined (NTTYDISC) && defined (TIOCSETD)
2068 if (pty_flag
&& xforkin
>= 0)
2070 /* Use new line discipline. */
2071 int ldisc
= NTTYDISC
;
2072 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2077 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2078 can do TIOCSPGRP only to the process's controlling tty. */
2081 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2082 I can't test it since I don't have 4.3. */
2083 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2086 ioctl (j
, TIOCNOTTY
, 0);
2090 /* In order to get a controlling terminal on some versions
2091 of BSD, it is necessary to put the process in pgrp 0
2092 before it opens the terminal. */
2100 #endif /* TIOCNOTTY */
2102 #if !defined (DONT_REOPEN_PTY)
2103 /*** There is a suggestion that this ought to be a
2104 conditional on TIOCSPGRP,
2105 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2106 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2107 that system does seem to need this code, even though
2108 both HAVE_SETSID and TIOCSCTTY are defined. */
2109 /* Now close the pty (if we had it open) and reopen it.
2110 This makes the pty the controlling terminal of the subprocess. */
2114 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2117 emacs_close (xforkin
);
2118 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2122 emacs_write (1, "Couldn't open the pty terminal ", 31);
2123 emacs_write (1, pty_name
, strlen (pty_name
));
2124 emacs_write (1, "\n", 1);
2129 #endif /* not DONT_REOPEN_PTY */
2131 #ifdef SETUP_SLAVE_PTY
2136 #endif /* SETUP_SLAVE_PTY */
2138 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2139 Now reenable it in the child, so it will die when we want it to. */
2141 signal (SIGHUP
, SIG_DFL
);
2143 #endif /* HAVE_PTYS */
2145 signal (SIGINT
, SIG_DFL
);
2146 signal (SIGQUIT
, SIG_DFL
);
2148 /* Stop blocking signals in the child. */
2149 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2152 child_setup_tty (xforkout
);
2154 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2155 new_argv
, 1, current_dir
);
2156 #else /* not WINDOWSNT */
2158 emacs_close (wait_child_setup
[0]);
2160 child_setup (xforkin
, xforkout
, xforkout
,
2161 new_argv
, 1, current_dir
);
2162 #endif /* not WINDOWSNT */
2164 environ
= save_environ
;
2169 /* This runs in the Emacs process. */
2173 emacs_close (forkin
);
2174 if (forkin
!= forkout
&& forkout
>= 0)
2175 emacs_close (forkout
);
2179 /* vfork succeeded. */
2180 XPROCESS (process
)->pid
= pid
;
2183 register_child (pid
, inchannel
);
2184 #endif /* WINDOWSNT */
2186 /* If the subfork execv fails, and it exits,
2187 this close hangs. I don't know why.
2188 So have an interrupt jar it loose. */
2190 struct atimer
*timer
;
2194 EMACS_SET_SECS_USECS (offset
, 1, 0);
2195 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2198 emacs_close (forkin
);
2200 cancel_atimer (timer
);
2204 if (forkin
!= forkout
&& forkout
>= 0)
2205 emacs_close (forkout
);
2209 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2212 XPROCESS (process
)->tty_name
= Qnil
;
2214 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2215 /* Wait for child_setup to complete in case that vfork is
2216 actually defined as fork. The descriptor wait_child_setup[1]
2217 of a pipe is closed at the child side either by close-on-exec
2218 on successful execvp or the _exit call in child_setup. */
2222 emacs_close (wait_child_setup
[1]);
2223 emacs_read (wait_child_setup
[0], &dummy
, 1);
2224 emacs_close (wait_child_setup
[0]);
2229 /* Restore the signal state whether vfork succeeded or not.
2230 (We will signal an error, below, if it failed.) */
2231 #ifdef HAVE_WORKING_VFORK
2232 /* Restore the parent's signal handlers. */
2233 sigaction (SIGINT
, &sigint_action
, 0);
2234 sigaction (SIGQUIT
, &sigquit_action
, 0);
2236 sigaction (SIGHUP
, &sighup_action
, 0);
2238 #endif /* HAVE_WORKING_VFORK */
2239 /* Stop blocking signals in the parent. */
2240 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2242 /* Now generate the error if vfork failed. */
2244 report_file_error ("Doing vfork", Qnil
);
2248 create_pty (process
)
2249 Lisp_Object process
;
2251 int inchannel
, outchannel
;
2253 /* Use volatile to protect variables from being clobbered by longjmp. */
2254 volatile int forkin
, forkout
;
2255 volatile int pty_flag
= 0;
2257 inchannel
= outchannel
= -1;
2260 if (!NILP (Vprocess_connection_type
))
2261 outchannel
= inchannel
= allocate_pty ();
2265 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2266 /* On most USG systems it does not work to open the pty's tty here,
2267 then close it and reopen it in the child. */
2269 /* Don't let this terminal become our controlling terminal
2270 (in case we don't have one). */
2271 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2273 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2276 report_file_error ("Opening pty", Qnil
);
2277 #if defined (DONT_REOPEN_PTY)
2278 /* In the case that vfork is defined as fork, the parent process
2279 (Emacs) may send some data before the child process completes
2280 tty options setup. So we setup tty before forking. */
2281 child_setup_tty (forkout
);
2282 #endif /* DONT_REOPEN_PTY */
2284 forkin
= forkout
= -1;
2285 #endif /* not USG, or USG_SUBTTY_WORKS */
2288 #endif /* HAVE_PTYS */
2291 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2292 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2295 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2296 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2300 /* Record this as an active process, with its channels.
2301 As a result, child_setup will close Emacs's side of the pipes. */
2302 chan_process
[inchannel
] = process
;
2303 XPROCESS (process
)->infd
= inchannel
;
2304 XPROCESS (process
)->outfd
= outchannel
;
2306 /* Previously we recorded the tty descriptor used in the subprocess.
2307 It was only used for getting the foreground tty process, so now
2308 we just reopen the device (see emacs_get_tty_pgrp) as this is
2309 more portable (see USG_SUBTTY_WORKS above). */
2311 XPROCESS (process
)->pty_flag
= pty_flag
;
2312 XPROCESS (process
)->status
= Qrun
;
2313 setup_process_coding_systems (process
);
2315 FD_SET (inchannel
, &input_wait_mask
);
2316 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2317 if (inchannel
> max_process_desc
)
2318 max_process_desc
= inchannel
;
2320 XPROCESS (process
)->pid
= -2;
2323 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2326 XPROCESS (process
)->tty_name
= Qnil
;
2332 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2333 The address family of sa is not included in the result. */
2336 conv_sockaddr_to_lisp (sa
, len
)
2337 struct sockaddr
*sa
;
2340 Lisp_Object address
;
2343 register struct Lisp_Vector
*p
;
2345 /* Workaround for a bug in getsockname on BSD: Names bound to
2346 sockets in the UNIX domain are inaccessible; getsockname returns
2347 a zero length name. */
2348 if (len
< OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2349 return empty_unibyte_string
;
2351 switch (sa
->sa_family
)
2355 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2356 len
= sizeof (sin
->sin_addr
) + 1;
2357 address
= Fmake_vector (make_number (len
), Qnil
);
2358 p
= XVECTOR (address
);
2359 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2360 cp
= (unsigned char *) &sin
->sin_addr
;
2366 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2367 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2368 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2369 address
= Fmake_vector (make_number (len
), Qnil
);
2370 p
= XVECTOR (address
);
2371 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2372 for (i
= 0; i
< len
; i
++)
2373 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2377 #ifdef HAVE_LOCAL_SOCKETS
2380 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2381 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2382 if (sockun
->sun_path
[i
] == 0)
2384 return make_unibyte_string (sockun
->sun_path
, i
);
2388 len
-= OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2389 address
= Fcons (make_number (sa
->sa_family
),
2390 Fmake_vector (make_number (len
), Qnil
));
2391 p
= XVECTOR (XCDR (address
));
2392 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2398 p
->contents
[i
++] = make_number (*cp
++);
2404 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2407 get_lisp_to_sockaddr_size (address
, familyp
)
2408 Lisp_Object address
;
2411 register struct Lisp_Vector
*p
;
2413 if (VECTORP (address
))
2415 p
= XVECTOR (address
);
2419 return sizeof (struct sockaddr_in
);
2422 else if (p
->size
== 9)
2424 *familyp
= AF_INET6
;
2425 return sizeof (struct sockaddr_in6
);
2429 #ifdef HAVE_LOCAL_SOCKETS
2430 else if (STRINGP (address
))
2432 *familyp
= AF_LOCAL
;
2433 return sizeof (struct sockaddr_un
);
2436 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2438 struct sockaddr
*sa
;
2439 *familyp
= XINT (XCAR (address
));
2440 p
= XVECTOR (XCDR (address
));
2441 return p
->size
+ sizeof (sa
->sa_family
);
2446 /* Convert an address object (vector or string) to an internal sockaddr.
2448 The address format has been basically validated by
2449 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2450 it could have come from user data. So if FAMILY is not valid,
2451 we return after zeroing *SA. */
2454 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2456 Lisp_Object address
;
2457 struct sockaddr
*sa
;
2460 register struct Lisp_Vector
*p
;
2461 register unsigned char *cp
= NULL
;
2466 if (VECTORP (address
))
2468 p
= XVECTOR (address
);
2469 if (family
== AF_INET
)
2471 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2472 len
= sizeof (sin
->sin_addr
) + 1;
2473 i
= XINT (p
->contents
[--len
]);
2474 sin
->sin_port
= htons (i
);
2475 cp
= (unsigned char *)&sin
->sin_addr
;
2476 sa
->sa_family
= family
;
2479 else if (family
== AF_INET6
)
2481 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2482 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2483 len
= sizeof (sin6
->sin6_addr
) + 1;
2484 i
= XINT (p
->contents
[--len
]);
2485 sin6
->sin6_port
= htons (i
);
2486 for (i
= 0; i
< len
; i
++)
2487 if (INTEGERP (p
->contents
[i
]))
2489 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2492 sa
->sa_family
= family
;
2499 else if (STRINGP (address
))
2501 #ifdef HAVE_LOCAL_SOCKETS
2502 if (family
== AF_LOCAL
)
2504 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2505 cp
= SDATA (address
);
2506 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2507 sockun
->sun_path
[i
] = *cp
++;
2508 sa
->sa_family
= family
;
2515 p
= XVECTOR (XCDR (address
));
2516 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2519 for (i
= 0; i
< len
; i
++)
2520 if (INTEGERP (p
->contents
[i
]))
2521 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2524 #ifdef DATAGRAM_SOCKETS
2525 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2527 doc
: /* Get the current datagram address associated with PROCESS. */)
2529 Lisp_Object process
;
2533 CHECK_PROCESS (process
);
2535 if (!DATAGRAM_CONN_P (process
))
2538 channel
= XPROCESS (process
)->infd
;
2539 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2540 datagram_address
[channel
].len
);
2543 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2545 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2546 Returns nil upon error setting address, ADDRESS otherwise. */)
2548 Lisp_Object process
, address
;
2553 CHECK_PROCESS (process
);
2555 if (!DATAGRAM_CONN_P (process
))
2558 channel
= XPROCESS (process
)->infd
;
2560 len
= get_lisp_to_sockaddr_size (address
, &family
);
2561 if (datagram_address
[channel
].len
!= len
)
2563 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2569 static const struct socket_options
{
2570 /* The name of this option. Should be lowercase version of option
2571 name without SO_ prefix. */
2573 /* Option level SOL_... */
2575 /* Option number SO_... */
2577 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2578 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2579 } socket_options
[] =
2581 #ifdef SO_BINDTODEVICE
2582 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2585 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2588 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2591 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2594 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2597 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2600 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2603 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2605 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2608 /* Set option OPT to value VAL on socket S.
2610 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2611 Signals an error if setting a known option fails.
2615 set_socket_option (s
, opt
, val
)
2617 Lisp_Object opt
, val
;
2620 const struct socket_options
*sopt
;
2625 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2626 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2627 if (strcmp (name
, sopt
->name
) == 0)
2630 switch (sopt
->opttype
)
2635 optval
= NILP (val
) ? 0 : 1;
2636 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2637 &optval
, sizeof (optval
));
2645 optval
= XINT (val
);
2647 error ("Bad option value for %s", name
);
2648 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2649 &optval
, sizeof (optval
));
2653 #ifdef SO_BINDTODEVICE
2656 char devname
[IFNAMSIZ
+1];
2658 /* This is broken, at least in the Linux 2.4 kernel.
2659 To unbind, the arg must be a zero integer, not the empty string.
2660 This should work on all systems. KFS. 2003-09-23. */
2661 bzero (devname
, sizeof devname
);
2664 char *arg
= (char *) SDATA (val
);
2665 int len
= min (strlen (arg
), IFNAMSIZ
);
2666 bcopy (arg
, devname
, len
);
2668 else if (!NILP (val
))
2669 error ("Bad option value for %s", name
);
2670 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2679 struct linger linger
;
2682 linger
.l_linger
= 0;
2684 linger
.l_linger
= XINT (val
);
2686 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2687 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2688 &linger
, sizeof (linger
));
2698 report_file_error ("Cannot set network option",
2699 Fcons (opt
, Fcons (val
, Qnil
)));
2700 return (1 << sopt
->optbit
);
2704 DEFUN ("set-network-process-option",
2705 Fset_network_process_option
, Sset_network_process_option
,
2707 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2708 See `make-network-process' for a list of options and values.
2709 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2710 OPTION is not a supported option, return nil instead; otherwise return t. */)
2711 (process
, option
, value
, no_error
)
2712 Lisp_Object process
, option
, value
;
2713 Lisp_Object no_error
;
2716 struct Lisp_Process
*p
;
2718 CHECK_PROCESS (process
);
2719 p
= XPROCESS (process
);
2720 if (!NETCONN1_P (p
))
2721 error ("Process is not a network process");
2725 error ("Process is not running");
2727 if (set_socket_option (s
, option
, value
))
2729 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2733 if (NILP (no_error
))
2734 error ("Unknown or unsupported option");
2741 DEFUN ("serial-process-configure",
2742 Fserial_process_configure
,
2743 Sserial_process_configure
,
2745 doc
: /* Configure speed, bytesize, etc. of a serial process.
2747 Arguments are specified as keyword/argument pairs. Attributes that
2748 are not given are re-initialized from the process's current
2749 configuration (available via the function `process-contact') or set to
2750 reasonable default values. The following arguments are defined:
2756 -- Any of these arguments can be given to identify the process that is
2757 to be configured. If none of these arguments is given, the current
2758 buffer's process is used.
2760 :speed SPEED -- SPEED is the speed of the serial port in bits per
2761 second, also called baud rate. Any value can be given for SPEED, but
2762 most serial ports work only at a few defined values between 1200 and
2763 115200, with 9600 being the most common value. If SPEED is nil, the
2764 serial port is not configured any further, i.e., all other arguments
2765 are ignored. This may be useful for special serial ports such as
2766 Bluetooth-to-serial converters which can only be configured through AT
2767 commands. A value of nil for SPEED can be used only when passed
2768 through `make-serial-process' or `serial-term'.
2770 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2771 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2773 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2774 `odd' (use odd parity), or the symbol `even' (use even parity). If
2775 PARITY is not given, no parity is used.
2777 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2778 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2779 is not given or nil, 1 stopbit is used.
2781 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2782 flowcontrol to be used, which is either nil (don't use flowcontrol),
2783 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2784 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2785 flowcontrol is used.
2787 `serial-process-configure' is called by `make-serial-process' for the
2788 initial configuration of the serial port.
2792 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2794 \(serial-process-configure
2795 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2797 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2799 usage: (serial-process-configure &rest ARGS) */)
2804 struct Lisp_Process
*p
;
2805 Lisp_Object contact
= Qnil
;
2806 Lisp_Object proc
= Qnil
;
2807 struct gcpro gcpro1
;
2809 contact
= Flist (nargs
, args
);
2812 proc
= Fplist_get (contact
, QCprocess
);
2814 proc
= Fplist_get (contact
, QCname
);
2816 proc
= Fplist_get (contact
, QCbuffer
);
2818 proc
= Fplist_get (contact
, QCport
);
2819 proc
= get_process (proc
);
2820 p
= XPROCESS (proc
);
2821 if (!EQ (p
->type
, Qserial
))
2822 error ("Not a serial process");
2824 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2830 serial_configure (p
, contact
);
2836 /* Used by make-serial-process to recover from errors. */
2837 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2839 if (!PROCESSP (proc
))
2841 remove_process (proc
);
2845 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2847 doc
: /* Create and return a serial port process.
2849 In Emacs, serial port connections are represented by process objects,
2850 so input and output work as for subprocesses, and `delete-process'
2851 closes a serial port connection. However, a serial process has no
2852 process id, it cannot be signaled, and the status codes are different
2853 from normal processes.
2855 `make-serial-process' creates a process and a buffer, on which you
2856 probably want to use `process-send-string'. Try \\[serial-term] for
2857 an interactive terminal. See below for examples.
2859 Arguments are specified as keyword/argument pairs. The following
2860 arguments are defined:
2862 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2863 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2864 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2865 the backslashes in strings).
2867 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2868 which is called by `make-serial-process'.
2870 :name NAME -- NAME is the name of the process. If NAME is not given,
2871 the value of PORT is used.
2873 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2874 with the process. Process output goes at the end of that buffer,
2875 unless you specify an output stream or filter function to handle the
2876 output. If BUFFER is not given, the value of NAME is used.
2878 :coding CODING -- If CODING is a symbol, it specifies the coding
2879 system used for both reading and writing for this process. If CODING
2880 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2881 ENCODING is used for writing.
2883 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2884 the process is running. If BOOL is not given, query before exiting.
2886 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2887 In the stopped state, a serial process does not accept incoming data,
2888 but you can send outgoing data. The stopped state is cleared by
2889 `continue-process' and set by `stop-process'.
2891 :filter FILTER -- Install FILTER as the process filter.
2893 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2895 :plist PLIST -- Install PLIST as the initial plist of the process.
2902 -- These arguments are handled by `serial-process-configure', which is
2903 called by `make-serial-process'.
2905 The original argument list, possibly modified by later configuration,
2906 is available via the function `process-contact'.
2910 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2912 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2914 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2916 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2918 usage: (make-serial-process &rest ARGS) */)
2924 Lisp_Object proc
, contact
, port
;
2925 struct Lisp_Process
*p
;
2926 struct gcpro gcpro1
;
2927 Lisp_Object name
, buffer
;
2928 Lisp_Object tem
, val
;
2929 int specpdl_count
= -1;
2934 contact
= Flist (nargs
, args
);
2937 port
= Fplist_get (contact
, QCport
);
2939 error ("No port specified");
2940 CHECK_STRING (port
);
2942 if (NILP (Fplist_member (contact
, QCspeed
)))
2943 error (":speed not specified");
2944 if (!NILP (Fplist_get (contact
, QCspeed
)))
2945 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2947 name
= Fplist_get (contact
, QCname
);
2950 CHECK_STRING (name
);
2951 proc
= make_process (name
);
2952 specpdl_count
= SPECPDL_INDEX ();
2953 record_unwind_protect (make_serial_process_unwind
, proc
);
2954 p
= XPROCESS (proc
);
2956 fd
= serial_open ((char*) SDATA (port
));
2959 if (fd
> max_process_desc
)
2960 max_process_desc
= fd
;
2961 chan_process
[fd
] = proc
;
2963 buffer
= Fplist_get (contact
, QCbuffer
);
2966 buffer
= Fget_buffer_create (buffer
);
2969 p
->childp
= contact
;
2970 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2972 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2973 p
->filter
= Fplist_get (contact
, QCfilter
);
2975 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2976 p
->kill_without_query
= 1;
2977 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2981 if (!EQ (p
->command
, Qt
))
2983 FD_SET (fd
, &input_wait_mask
);
2984 FD_SET (fd
, &non_keyboard_wait_mask
);
2987 if (BUFFERP (buffer
))
2989 set_marker_both (p
->mark
, buffer
,
2990 BUF_ZV (XBUFFER (buffer
)),
2991 BUF_ZV_BYTE (XBUFFER (buffer
)));
2994 tem
= Fplist_member (contact
, QCcoding
);
2995 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3001 val
= XCAR (XCDR (tem
));
3005 else if (!NILP (Vcoding_system_for_read
))
3006 val
= Vcoding_system_for_read
;
3007 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3008 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3010 p
->decode_coding_system
= val
;
3015 val
= XCAR (XCDR (tem
));
3019 else if (!NILP (Vcoding_system_for_write
))
3020 val
= Vcoding_system_for_write
;
3021 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3022 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3024 p
->encode_coding_system
= val
;
3026 setup_process_coding_systems (proc
);
3027 p
->decoding_buf
= make_uninit_string (0);
3028 p
->decoding_carryover
= 0;
3029 p
->encoding_buf
= make_uninit_string (0);
3030 p
->inherit_coding_system_flag
3031 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3033 Fserial_process_configure(nargs
, args
);
3035 specpdl_ptr
= specpdl
+ specpdl_count
;
3040 #endif /* HAVE_SERIAL */
3042 /* Create a network stream/datagram client/server process. Treated
3043 exactly like a normal process when reading and writing. Primary
3044 differences are in status display and process deletion. A network
3045 connection has no PID; you cannot signal it. All you can do is
3046 stop/continue it and deactivate/close it via delete-process */
3048 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3050 doc
: /* Create and return a network server or client process.
3052 In Emacs, network connections are represented by process objects, so
3053 input and output work as for subprocesses and `delete-process' closes
3054 a network connection. However, a network process has no process id,
3055 it cannot be signaled, and the status codes are different from normal
3058 Arguments are specified as keyword/argument pairs. The following
3059 arguments are defined:
3061 :name NAME -- NAME is name for process. It is modified if necessary
3064 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3065 with the process. Process output goes at end of that buffer, unless
3066 you specify an output stream or filter function to handle the output.
3067 BUFFER may be also nil, meaning that this process is not associated
3070 :host HOST -- HOST is name of the host to connect to, or its IP
3071 address. The symbol `local' specifies the local host. If specified
3072 for a server process, it must be a valid name or address for the local
3073 host, and only clients connecting to that address will be accepted.
3075 :service SERVICE -- SERVICE is name of the service desired, or an
3076 integer specifying a port number to connect to. If SERVICE is t,
3077 a random port number is selected for the server. (If Emacs was
3078 compiled with getaddrinfo, a port number can also be specified as a
3079 string, e.g. "80", as well as an integer. This is not portable.)
3081 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3082 stream type connection, `datagram' creates a datagram type connection,
3083 `seqpacket' creates a reliable datagram connection.
3085 :family FAMILY -- FAMILY is the address (and protocol) family for the
3086 service specified by HOST and SERVICE. The default (nil) is to use
3087 whatever address family (IPv4 or IPv6) that is defined for the host
3088 and port number specified by HOST and SERVICE. Other address families
3090 local -- for a local (i.e. UNIX) address specified by SERVICE.
3091 ipv4 -- use IPv4 address family only.
3092 ipv6 -- use IPv6 address family only.
3094 :local ADDRESS -- ADDRESS is the local address used for the connection.
3095 This parameter is ignored when opening a client process. When specified
3096 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3098 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3099 connection. This parameter is ignored when opening a stream server
3100 process. For a datagram server process, it specifies the initial
3101 setting of the remote datagram address. When specified for a client
3102 process, the FAMILY, HOST, and SERVICE args are ignored.
3104 The format of ADDRESS depends on the address family:
3105 - An IPv4 address is represented as an vector of integers [A B C D P]
3106 corresponding to numeric IP address A.B.C.D and port number P.
3107 - A local address is represented as a string with the address in the
3108 local address space.
3109 - An "unsupported family" address is represented by a cons (F . AV)
3110 where F is the family number and AV is a vector containing the socket
3111 address data with one element per address data byte. Do not rely on
3112 this format in portable code, as it may depend on implementation
3113 defined constants, data sizes, and data structure alignment.
3115 :coding CODING -- If CODING is a symbol, it specifies the coding
3116 system used for both reading and writing for this process. If CODING
3117 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3118 ENCODING is used for writing.
3120 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3121 return without waiting for the connection to complete; instead, the
3122 sentinel function will be called with second arg matching "open" (if
3123 successful) or "failed" when the connect completes. Default is to use
3124 a blocking connect (i.e. wait) for stream type connections.
3126 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3127 running when Emacs is exited.
3129 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3130 In the stopped state, a server process does not accept new
3131 connections, and a client process does not handle incoming traffic.
3132 The stopped state is cleared by `continue-process' and set by
3135 :filter FILTER -- Install FILTER as the process filter.
3137 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3138 process filter are multibyte, otherwise they are unibyte.
3139 If this keyword is not specified, the strings are multibyte if
3140 `default-enable-multibyte-characters' is non-nil.
3142 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3144 :log LOG -- Install LOG as the server process log function. This
3145 function is called when the server accepts a network connection from a
3146 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3147 is the server process, CLIENT is the new process for the connection,
3148 and MESSAGE is a string.
3150 :plist PLIST -- Install PLIST as the new process' initial plist.
3152 :server QLEN -- if QLEN is non-nil, create a server process for the
3153 specified FAMILY, SERVICE, and connection type (stream or datagram).
3154 If QLEN is an integer, it is used as the max. length of the server's
3155 pending connection queue (also known as the backlog); the default
3156 queue length is 5. Default is to create a client process.
3158 The following network options can be specified for this connection:
3160 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3161 :dontroute BOOL -- Only send to directly connected hosts.
3162 :keepalive BOOL -- Send keep-alive messages on network stream.
3163 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3164 :oobinline BOOL -- Place out-of-band data in receive data stream.
3165 :priority INT -- Set protocol defined priority for sent packets.
3166 :reuseaddr BOOL -- Allow reusing a recently used local address
3167 (this is allowed by default for a server process).
3168 :bindtodevice NAME -- bind to interface NAME. Using this may require
3169 special privileges on some systems.
3171 Consult the relevant system programmer's manual pages for more
3172 information on using these options.
3175 A server process will listen for and accept connections from clients.
3176 When a client connection is accepted, a new network process is created
3177 for the connection with the following parameters:
3179 - The client's process name is constructed by concatenating the server
3180 process' NAME and a client identification string.
3181 - If the FILTER argument is non-nil, the client process will not get a
3182 separate process buffer; otherwise, the client's process buffer is a newly
3183 created buffer named after the server process' BUFFER name or process
3184 NAME concatenated with the client identification string.
3185 - The connection type and the process filter and sentinel parameters are
3186 inherited from the server process' TYPE, FILTER and SENTINEL.
3187 - The client process' contact info is set according to the client's
3188 addressing information (typically an IP address and a port number).
3189 - The client process' plist is initialized from the server's plist.
3191 Notice that the FILTER and SENTINEL args are never used directly by
3192 the server process. Also, the BUFFER argument is not used directly by
3193 the server process, but via the optional :log function, accepted (and
3194 failed) connections may be logged in the server process' buffer.
3196 The original argument list, modified with the actual connection
3197 information, is available via the `process-contact' function.
3199 usage: (make-network-process &rest ARGS) */)
3205 Lisp_Object contact
;
3206 struct Lisp_Process
*p
;
3207 #ifdef HAVE_GETADDRINFO
3208 struct addrinfo ai
, *res
, *lres
;
3209 struct addrinfo hints
;
3210 char *portstring
, portbuf
[128];
3211 #else /* HAVE_GETADDRINFO */
3212 struct _emacs_addrinfo
3218 struct sockaddr
*ai_addr
;
3219 struct _emacs_addrinfo
*ai_next
;
3221 #endif /* HAVE_GETADDRINFO */
3222 struct sockaddr_in address_in
;
3223 #ifdef HAVE_LOCAL_SOCKETS
3224 struct sockaddr_un address_un
;
3229 int s
= -1, outch
, inch
;
3230 struct gcpro gcpro1
;
3231 int count
= SPECPDL_INDEX ();
3233 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3235 Lisp_Object name
, buffer
, host
, service
, address
;
3236 Lisp_Object filter
, sentinel
;
3237 int is_non_blocking_client
= 0;
3238 int is_server
= 0, backlog
= 5;
3245 /* Save arguments for process-contact and clone-process. */
3246 contact
= Flist (nargs
, args
);
3250 /* Ensure socket support is loaded if available. */
3251 init_winsock (TRUE
);
3254 /* :type TYPE (nil: stream, datagram */
3255 tem
= Fplist_get (contact
, QCtype
);
3257 socktype
= SOCK_STREAM
;
3258 #ifdef DATAGRAM_SOCKETS
3259 else if (EQ (tem
, Qdatagram
))
3260 socktype
= SOCK_DGRAM
;
3262 #ifdef HAVE_SEQPACKET
3263 else if (EQ (tem
, Qseqpacket
))
3264 socktype
= SOCK_SEQPACKET
;
3267 error ("Unsupported connection type");
3270 tem
= Fplist_get (contact
, QCserver
);
3273 /* Don't support network sockets when non-blocking mode is
3274 not available, since a blocked Emacs is not useful. */
3275 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3276 error ("Network servers not supported");
3280 backlog
= XINT (tem
);
3284 /* Make QCaddress an alias for :local (server) or :remote (client). */
3285 QCaddress
= is_server
? QClocal
: QCremote
;
3288 if (!is_server
&& socktype
!= SOCK_DGRAM
3289 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3291 #ifndef NON_BLOCKING_CONNECT
3292 error ("Non-blocking connect not supported");
3294 is_non_blocking_client
= 1;
3298 name
= Fplist_get (contact
, QCname
);
3299 buffer
= Fplist_get (contact
, QCbuffer
);
3300 filter
= Fplist_get (contact
, QCfilter
);
3301 sentinel
= Fplist_get (contact
, QCsentinel
);
3303 CHECK_STRING (name
);
3305 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3306 ai
.ai_socktype
= socktype
;
3311 /* :local ADDRESS or :remote ADDRESS */
3312 address
= Fplist_get (contact
, QCaddress
);
3313 if (!NILP (address
))
3315 host
= service
= Qnil
;
3317 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3318 error ("Malformed :address");
3319 ai
.ai_family
= family
;
3320 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3321 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3325 /* :family FAMILY -- nil (for Inet), local, or integer. */
3326 tem
= Fplist_get (contact
, QCfamily
);
3329 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3335 #ifdef HAVE_LOCAL_SOCKETS
3336 else if (EQ (tem
, Qlocal
))
3340 else if (EQ (tem
, Qipv6
))
3343 else if (EQ (tem
, Qipv4
))
3345 else if (INTEGERP (tem
))
3346 family
= XINT (tem
);
3348 error ("Unknown address family");
3350 ai
.ai_family
= family
;
3352 /* :service SERVICE -- string, integer (port number), or t (random port). */
3353 service
= Fplist_get (contact
, QCservice
);
3355 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3356 host
= Fplist_get (contact
, QChost
);
3359 if (EQ (host
, Qlocal
))
3360 host
= build_string ("localhost");
3361 CHECK_STRING (host
);
3364 #ifdef HAVE_LOCAL_SOCKETS
3365 if (family
== AF_LOCAL
)
3369 message (":family local ignores the :host \"%s\" property",
3371 contact
= Fplist_put (contact
, QChost
, Qnil
);
3374 CHECK_STRING (service
);
3375 bzero (&address_un
, sizeof address_un
);
3376 address_un
.sun_family
= AF_LOCAL
;
3377 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3378 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3379 ai
.ai_addrlen
= sizeof address_un
;
3384 /* Slow down polling to every ten seconds.
3385 Some kernels have a bug which causes retrying connect to fail
3386 after a connect. Polling can interfere with gethostbyname too. */
3387 #ifdef POLL_FOR_INPUT
3388 if (socktype
!= SOCK_DGRAM
)
3390 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3391 bind_polling_period (10);
3395 #ifdef HAVE_GETADDRINFO
3396 /* If we have a host, use getaddrinfo to resolve both host and service.
3397 Otherwise, use getservbyname to lookup the service. */
3401 /* SERVICE can either be a string or int.
3402 Convert to a C string for later use by getaddrinfo. */
3403 if (EQ (service
, Qt
))
3405 else if (INTEGERP (service
))
3407 sprintf (portbuf
, "%ld", (long) XINT (service
));
3408 portstring
= portbuf
;
3412 CHECK_STRING (service
);
3413 portstring
= SDATA (service
);
3418 memset (&hints
, 0, sizeof (hints
));
3420 hints
.ai_family
= family
;
3421 hints
.ai_socktype
= socktype
;
3422 hints
.ai_protocol
= 0;
3424 #ifdef HAVE_RES_INIT
3428 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3430 #ifdef HAVE_GAI_STRERROR
3431 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3433 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3439 #endif /* HAVE_GETADDRINFO */
3441 /* We end up here if getaddrinfo is not defined, or in case no hostname
3442 has been specified (e.g. for a local server process). */
3444 if (EQ (service
, Qt
))
3446 else if (INTEGERP (service
))
3447 port
= htons ((unsigned short) XINT (service
));
3450 struct servent
*svc_info
;
3451 CHECK_STRING (service
);
3452 svc_info
= getservbyname (SDATA (service
),
3453 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3455 error ("Unknown service: %s", SDATA (service
));
3456 port
= svc_info
->s_port
;
3459 bzero (&address_in
, sizeof address_in
);
3460 address_in
.sin_family
= family
;
3461 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3462 address_in
.sin_port
= port
;
3464 #ifndef HAVE_GETADDRINFO
3467 struct hostent
*host_info_ptr
;
3469 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3470 as it may `hang' Emacs for a very long time. */
3474 #ifdef HAVE_RES_INIT
3478 host_info_ptr
= gethostbyname (SDATA (host
));
3483 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3484 host_info_ptr
->h_length
);
3485 family
= host_info_ptr
->h_addrtype
;
3486 address_in
.sin_family
= family
;
3489 /* Attempt to interpret host as numeric inet address */
3491 unsigned long numeric_addr
;
3492 numeric_addr
= inet_addr ((char *) SDATA (host
));
3493 if (numeric_addr
== -1)
3494 error ("Unknown host \"%s\"", SDATA (host
));
3496 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3497 sizeof (address_in
.sin_addr
));
3501 #endif /* not HAVE_GETADDRINFO */
3503 ai
.ai_family
= family
;
3504 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3505 ai
.ai_addrlen
= sizeof address_in
;
3509 /* Do this in case we never enter the for-loop below. */
3510 count1
= SPECPDL_INDEX ();
3513 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3519 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3526 #ifdef DATAGRAM_SOCKETS
3527 if (!is_server
&& socktype
== SOCK_DGRAM
)
3529 #endif /* DATAGRAM_SOCKETS */
3531 #ifdef NON_BLOCKING_CONNECT
3532 if (is_non_blocking_client
)
3535 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3537 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3549 /* Make us close S if quit. */
3550 record_unwind_protect (close_file_unwind
, make_number (s
));
3552 /* Parse network options in the arg list.
3553 We simply ignore anything which isn't a known option (including other keywords).
3554 An error is signaled if setting a known option fails. */
3555 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3556 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3560 /* Configure as a server socket. */
3562 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3563 explicit :reuseaddr key to override this. */
3564 #ifdef HAVE_LOCAL_SOCKETS
3565 if (family
!= AF_LOCAL
)
3567 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3570 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3571 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3574 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3575 report_file_error ("Cannot bind server socket", Qnil
);
3577 #ifdef HAVE_GETSOCKNAME
3578 if (EQ (service
, Qt
))
3580 struct sockaddr_in sa1
;
3581 int len1
= sizeof (sa1
);
3582 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3584 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3585 service
= make_number (ntohs (sa1
.sin_port
));
3586 contact
= Fplist_put (contact
, QCservice
, service
);
3591 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3592 report_file_error ("Cannot listen on server socket", Qnil
);
3600 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3603 if (ret
== 0 || xerrno
== EISCONN
)
3605 /* The unwind-protect will be discarded afterwards.
3606 Likewise for immediate_quit. */
3610 #ifdef NON_BLOCKING_CONNECT
3612 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3616 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3623 if (xerrno
== EINTR
)
3625 /* Unlike most other syscalls connect() cannot be called
3626 again. (That would return EALREADY.) The proper way to
3627 wait for completion is select(). */
3634 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3641 report_file_error ("select failed", Qnil
);
3645 len
= sizeof xerrno
;
3646 eassert (FD_ISSET (s
, &fdset
));
3647 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3648 report_file_error ("getsockopt failed", Qnil
);
3650 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3654 #endif /* !WINDOWSNT */
3658 /* Discard the unwind protect closing S. */
3659 specpdl_ptr
= specpdl
+ count1
;
3664 if (xerrno
== EINTR
)
3671 #ifdef DATAGRAM_SOCKETS
3672 if (socktype
== SOCK_DGRAM
)
3674 if (datagram_address
[s
].sa
)
3676 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3677 datagram_address
[s
].len
= lres
->ai_addrlen
;
3681 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3682 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3685 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3686 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3687 conv_lisp_to_sockaddr (rfamily
, remote
,
3688 datagram_address
[s
].sa
, rlen
);
3692 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3695 contact
= Fplist_put (contact
, QCaddress
,
3696 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3697 #ifdef HAVE_GETSOCKNAME
3700 struct sockaddr_in sa1
;
3701 int len1
= sizeof (sa1
);
3702 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3703 contact
= Fplist_put (contact
, QClocal
,
3704 conv_sockaddr_to_lisp (&sa1
, len1
));
3711 #ifdef HAVE_GETADDRINFO
3720 /* Discard the unwind protect for closing S, if any. */
3721 specpdl_ptr
= specpdl
+ count1
;
3723 /* Unwind bind_polling_period and request_sigio. */
3724 unbind_to (count
, Qnil
);
3728 /* If non-blocking got this far - and failed - assume non-blocking is
3729 not supported after all. This is probably a wrong assumption, but
3730 the normal blocking calls to open-network-stream handles this error
3732 if (is_non_blocking_client
)
3737 report_file_error ("make server process failed", contact
);
3739 report_file_error ("make client process failed", contact
);
3746 buffer
= Fget_buffer_create (buffer
);
3747 proc
= make_process (name
);
3749 chan_process
[inch
] = proc
;
3752 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3755 fcntl (inch
, F_SETFL
, O_NDELAY
);
3759 p
= XPROCESS (proc
);
3761 p
->childp
= contact
;
3762 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3766 p
->sentinel
= sentinel
;
3768 p
->log
= Fplist_get (contact
, QClog
);
3769 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3770 p
->kill_without_query
= 1;
3771 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3776 if (is_server
&& socktype
!= SOCK_DGRAM
)
3777 p
->status
= Qlisten
;
3779 /* Make the process marker point into the process buffer (if any). */
3780 if (BUFFERP (buffer
))
3781 set_marker_both (p
->mark
, buffer
,
3782 BUF_ZV (XBUFFER (buffer
)),
3783 BUF_ZV_BYTE (XBUFFER (buffer
)));
3785 #ifdef NON_BLOCKING_CONNECT
3786 if (is_non_blocking_client
)
3788 /* We may get here if connect did succeed immediately. However,
3789 in that case, we still need to signal this like a non-blocking
3791 p
->status
= Qconnect
;
3792 if (!FD_ISSET (inch
, &connect_wait_mask
))
3794 FD_SET (inch
, &connect_wait_mask
);
3795 num_pending_connects
++;
3800 /* A server may have a client filter setting of Qt, but it must
3801 still listen for incoming connects unless it is stopped. */
3802 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3803 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3805 FD_SET (inch
, &input_wait_mask
);
3806 FD_SET (inch
, &non_keyboard_wait_mask
);
3809 if (inch
> max_process_desc
)
3810 max_process_desc
= inch
;
3812 tem
= Fplist_member (contact
, QCcoding
);
3813 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3814 tem
= Qnil
; /* No error message (too late!). */
3817 /* Setup coding systems for communicating with the network stream. */
3818 struct gcpro gcpro1
;
3819 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3820 Lisp_Object coding_systems
= Qt
;
3821 Lisp_Object args
[5], val
;
3825 val
= XCAR (XCDR (tem
));
3829 else if (!NILP (Vcoding_system_for_read
))
3830 val
= Vcoding_system_for_read
;
3831 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3832 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3833 /* We dare not decode end-of-line format by setting VAL to
3834 Qraw_text, because the existing Emacs Lisp libraries
3835 assume that they receive bare code including a sequene of
3840 if (NILP (host
) || NILP (service
))
3841 coding_systems
= Qnil
;
3844 args
[0] = Qopen_network_stream
, args
[1] = name
,
3845 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3847 coding_systems
= Ffind_operation_coding_system (5, args
);
3850 if (CONSP (coding_systems
))
3851 val
= XCAR (coding_systems
);
3852 else if (CONSP (Vdefault_process_coding_system
))
3853 val
= XCAR (Vdefault_process_coding_system
);
3857 p
->decode_coding_system
= val
;
3861 val
= XCAR (XCDR (tem
));
3865 else if (!NILP (Vcoding_system_for_write
))
3866 val
= Vcoding_system_for_write
;
3867 else if (NILP (current_buffer
->enable_multibyte_characters
))
3871 if (EQ (coding_systems
, Qt
))
3873 if (NILP (host
) || NILP (service
))
3874 coding_systems
= Qnil
;
3877 args
[0] = Qopen_network_stream
, args
[1] = name
,
3878 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3880 coding_systems
= Ffind_operation_coding_system (5, args
);
3884 if (CONSP (coding_systems
))
3885 val
= XCDR (coding_systems
);
3886 else if (CONSP (Vdefault_process_coding_system
))
3887 val
= XCDR (Vdefault_process_coding_system
);
3891 p
->encode_coding_system
= val
;
3893 setup_process_coding_systems (proc
);
3895 p
->decoding_buf
= make_uninit_string (0);
3896 p
->decoding_carryover
= 0;
3897 p
->encoding_buf
= make_uninit_string (0);
3899 p
->inherit_coding_system_flag
3900 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3905 #endif /* HAVE_SOCKETS */
3908 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3911 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3912 doc
: /* Return an alist of all network interfaces and their network address.
3913 Each element is a cons, the car of which is a string containing the
3914 interface name, and the cdr is the network address in internal
3915 format; see the description of ADDRESS in `make-network-process'. */)
3918 struct ifconf ifconf
;
3919 struct ifreq
*ifreqs
= NULL
;
3924 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3930 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3931 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3938 ifconf
.ifc_len
= buf_size
;
3939 ifconf
.ifc_req
= ifreqs
;
3940 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3946 if (ifconf
.ifc_len
== buf_size
)
3950 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3953 while (--ifaces
>= 0)
3955 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3956 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3957 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3959 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3960 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3961 res
= Fcons (Fcons (build_string (namebuf
),
3962 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3963 sizeof (struct sockaddr
))),
3969 #endif /* SIOCGIFCONF */
3971 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3975 const char *flag_sym
;
3978 static const struct ifflag_def ifflag_table
[] = {
3982 #ifdef IFF_BROADCAST
3983 { IFF_BROADCAST
, "broadcast" },
3986 { IFF_DEBUG
, "debug" },
3989 { IFF_LOOPBACK
, "loopback" },
3991 #ifdef IFF_POINTOPOINT
3992 { IFF_POINTOPOINT
, "pointopoint" },
3995 { IFF_RUNNING
, "running" },
3998 { IFF_NOARP
, "noarp" },
4001 { IFF_PROMISC
, "promisc" },
4003 #ifdef IFF_NOTRAILERS
4004 { IFF_NOTRAILERS
, "notrailers" },
4007 { IFF_ALLMULTI
, "allmulti" },
4010 { IFF_MASTER
, "master" },
4013 { IFF_SLAVE
, "slave" },
4015 #ifdef IFF_MULTICAST
4016 { IFF_MULTICAST
, "multicast" },
4019 { IFF_PORTSEL
, "portsel" },
4021 #ifdef IFF_AUTOMEDIA
4022 { IFF_AUTOMEDIA
, "automedia" },
4025 { IFF_DYNAMIC
, "dynamic" },
4028 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
4031 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
4034 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
4037 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
4040 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
4045 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
4046 doc
: /* Return information about network interface named IFNAME.
4047 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4048 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4049 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
4050 FLAGS is the current flags of the interface. */)
4055 Lisp_Object res
= Qnil
;
4060 CHECK_STRING (ifname
);
4062 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
4063 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
4065 s
= socket (AF_INET
, SOCK_STREAM
, 0);
4070 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
4071 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4073 int flags
= rq
.ifr_flags
;
4074 const struct ifflag_def
*fp
;
4078 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4080 if (flags
& fp
->flag_bit
)
4082 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4083 flags
-= fp
->flag_bit
;
4086 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
4088 if (flags
& (1 << fnum
))
4090 elt
= Fcons (make_number (fnum
), elt
);
4095 res
= Fcons (elt
, res
);
4098 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4099 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4101 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4102 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4106 for (n
= 0; n
< 6; n
++)
4107 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4108 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4111 res
= Fcons (elt
, res
);
4114 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4115 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4118 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4119 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4121 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4125 res
= Fcons (elt
, res
);
4128 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4129 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4132 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4135 res
= Fcons (elt
, res
);
4138 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4139 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4142 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4145 res
= Fcons (elt
, res
);
4149 return any
? res
: Qnil
;
4152 #endif /* HAVE_SOCKETS */
4154 /* Turn off input and output for process PROC. */
4157 deactivate_process (proc
)
4160 register int inchannel
, outchannel
;
4161 register struct Lisp_Process
*p
= XPROCESS (proc
);
4163 inchannel
= p
->infd
;
4164 outchannel
= p
->outfd
;
4166 #ifdef ADAPTIVE_READ_BUFFERING
4167 if (p
->read_output_delay
> 0)
4169 if (--process_output_delay_count
< 0)
4170 process_output_delay_count
= 0;
4171 p
->read_output_delay
= 0;
4172 p
->read_output_skip
= 0;
4178 /* Beware SIGCHLD hereabouts. */
4179 flush_pending_output (inchannel
);
4180 emacs_close (inchannel
);
4181 if (outchannel
>= 0 && outchannel
!= inchannel
)
4182 emacs_close (outchannel
);
4186 #ifdef DATAGRAM_SOCKETS
4187 if (DATAGRAM_CHAN_P (inchannel
))
4189 xfree (datagram_address
[inchannel
].sa
);
4190 datagram_address
[inchannel
].sa
= 0;
4191 datagram_address
[inchannel
].len
= 0;
4194 chan_process
[inchannel
] = Qnil
;
4195 FD_CLR (inchannel
, &input_wait_mask
);
4196 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4197 #ifdef NON_BLOCKING_CONNECT
4198 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4200 FD_CLR (inchannel
, &connect_wait_mask
);
4201 if (--num_pending_connects
< 0)
4205 if (inchannel
== max_process_desc
)
4208 /* We just closed the highest-numbered process input descriptor,
4209 so recompute the highest-numbered one now. */
4210 max_process_desc
= 0;
4211 for (i
= 0; i
< MAXDESC
; i
++)
4212 if (!NILP (chan_process
[i
]))
4213 max_process_desc
= i
;
4218 /* Close all descriptors currently in use for communication
4219 with subprocess. This is used in a newly-forked subprocess
4220 to get rid of irrelevant descriptors. */
4223 close_process_descs ()
4227 for (i
= 0; i
< MAXDESC
; i
++)
4229 Lisp_Object process
;
4230 process
= chan_process
[i
];
4231 if (!NILP (process
))
4233 int in
= XPROCESS (process
)->infd
;
4234 int out
= XPROCESS (process
)->outfd
;
4237 if (out
>= 0 && in
!= out
)
4244 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4246 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4247 It is read into the process' buffers or given to their filter functions.
4248 Non-nil arg PROCESS means do not return until some output has been received
4251 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4252 and milliseconds to wait; return after that much time whether or not
4253 there is any subprocess output. If SECONDS is a floating point number,
4254 it specifies a fractional number of seconds to wait.
4255 The MILLISEC argument is obsolete and should be avoided.
4257 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4258 from PROCESS, suspending reading output from other processes.
4259 If JUST-THIS-ONE is an integer, don't run any timers either.
4260 Return non-nil if we received any output before the timeout expired. */)
4261 (process
, seconds
, millisec
, just_this_one
)
4262 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
4264 int secs
, usecs
= 0;
4266 if (! NILP (process
))
4267 CHECK_PROCESS (process
);
4269 just_this_one
= Qnil
;
4271 if (!NILP (millisec
))
4272 { /* Obsolete calling convention using integers rather than floats. */
4273 CHECK_NUMBER (millisec
);
4275 seconds
= make_float (XINT (millisec
) / 1000.0);
4278 CHECK_NUMBER (seconds
);
4279 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4283 if (!NILP (seconds
))
4285 if (INTEGERP (seconds
))
4286 secs
= XINT (seconds
);
4287 else if (FLOATP (seconds
))
4289 double timeout
= XFLOAT_DATA (seconds
);
4290 secs
= (int) timeout
;
4291 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4294 wrong_type_argument (Qnumberp
, seconds
);
4296 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4297 secs
= -1, usecs
= 0;
4300 secs
= NILP (process
) ? -1 : 0;
4303 (wait_reading_process_output (secs
, usecs
, 0, 0,
4305 !NILP (process
) ? XPROCESS (process
) : NULL
,
4306 NILP (just_this_one
) ? 0 :
4307 !INTEGERP (just_this_one
) ? 1 : -1)
4311 /* Accept a connection for server process SERVER on CHANNEL. */
4313 static int connect_counter
= 0;
4316 server_accept_connection (server
, channel
)
4320 Lisp_Object proc
, caller
, name
, buffer
;
4321 Lisp_Object contact
, host
, service
;
4322 struct Lisp_Process
*ps
= XPROCESS (server
);
4323 struct Lisp_Process
*p
;
4327 struct sockaddr_in in
;
4329 struct sockaddr_in6 in6
;
4331 #ifdef HAVE_LOCAL_SOCKETS
4332 struct sockaddr_un un
;
4335 int len
= sizeof saddr
;
4337 s
= accept (channel
, &saddr
.sa
, &len
);
4346 if (code
== EWOULDBLOCK
)
4350 if (!NILP (ps
->log
))
4351 call3 (ps
->log
, server
, Qnil
,
4352 concat3 (build_string ("accept failed with code"),
4353 Fnumber_to_string (make_number (code
)),
4354 build_string ("\n")));
4360 /* Setup a new process to handle the connection. */
4362 /* Generate a unique identification of the caller, and build contact
4363 information for this process. */
4366 switch (saddr
.sa
.sa_family
)
4370 Lisp_Object args
[5];
4371 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4372 args
[0] = build_string ("%d.%d.%d.%d");
4373 args
[1] = make_number (*ip
++);
4374 args
[2] = make_number (*ip
++);
4375 args
[3] = make_number (*ip
++);
4376 args
[4] = make_number (*ip
++);
4377 host
= Fformat (5, args
);
4378 service
= make_number (ntohs (saddr
.in
.sin_port
));
4380 args
[0] = build_string (" <%s:%d>");
4383 caller
= Fformat (3, args
);
4390 Lisp_Object args
[9];
4391 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4393 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4394 for (i
= 0; i
< 8; i
++)
4395 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4396 host
= Fformat (9, args
);
4397 service
= make_number (ntohs (saddr
.in
.sin_port
));
4399 args
[0] = build_string (" <[%s]:%d>");
4402 caller
= Fformat (3, args
);
4407 #ifdef HAVE_LOCAL_SOCKETS
4411 caller
= Fnumber_to_string (make_number (connect_counter
));
4412 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4416 /* Create a new buffer name for this process if it doesn't have a
4417 filter. The new buffer name is based on the buffer name or
4418 process name of the server process concatenated with the caller
4421 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4425 buffer
= ps
->buffer
;
4427 buffer
= Fbuffer_name (buffer
);
4432 buffer
= concat2 (buffer
, caller
);
4433 buffer
= Fget_buffer_create (buffer
);
4437 /* Generate a unique name for the new server process. Combine the
4438 server process name with the caller identification. */
4440 name
= concat2 (ps
->name
, caller
);
4441 proc
= make_process (name
);
4443 chan_process
[s
] = proc
;
4446 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4449 fcntl (s
, F_SETFL
, O_NDELAY
);
4453 p
= XPROCESS (proc
);
4455 /* Build new contact information for this setup. */
4456 contact
= Fcopy_sequence (ps
->childp
);
4457 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4458 contact
= Fplist_put (contact
, QChost
, host
);
4459 if (!NILP (service
))
4460 contact
= Fplist_put (contact
, QCservice
, service
);
4461 contact
= Fplist_put (contact
, QCremote
,
4462 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4463 #ifdef HAVE_GETSOCKNAME
4465 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4466 contact
= Fplist_put (contact
, QClocal
,
4467 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4470 p
->childp
= contact
;
4471 p
->plist
= Fcopy_sequence (ps
->plist
);
4475 p
->sentinel
= ps
->sentinel
;
4476 p
->filter
= ps
->filter
;
4483 /* Client processes for accepted connections are not stopped initially. */
4484 if (!EQ (p
->filter
, Qt
))
4486 FD_SET (s
, &input_wait_mask
);
4487 FD_SET (s
, &non_keyboard_wait_mask
);
4490 if (s
> max_process_desc
)
4491 max_process_desc
= s
;
4493 /* Setup coding system for new process based on server process.
4494 This seems to be the proper thing to do, as the coding system
4495 of the new process should reflect the settings at the time the
4496 server socket was opened; not the current settings. */
4498 p
->decode_coding_system
= ps
->decode_coding_system
;
4499 p
->encode_coding_system
= ps
->encode_coding_system
;
4500 setup_process_coding_systems (proc
);
4502 p
->decoding_buf
= make_uninit_string (0);
4503 p
->decoding_carryover
= 0;
4504 p
->encoding_buf
= make_uninit_string (0);
4506 p
->inherit_coding_system_flag
4507 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4509 if (!NILP (ps
->log
))
4510 call3 (ps
->log
, server
, proc
,
4511 concat3 (build_string ("accept from "),
4512 (STRINGP (host
) ? host
: build_string ("-")),
4513 build_string ("\n")));
4515 if (!NILP (p
->sentinel
))
4516 exec_sentinel (proc
,
4517 concat3 (build_string ("open from "),
4518 (STRINGP (host
) ? host
: build_string ("-")),
4519 build_string ("\n")));
4522 /* This variable is different from waiting_for_input in keyboard.c.
4523 It is used to communicate to a lisp process-filter/sentinel (via the
4524 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4525 for user-input when that process-filter was called.
4526 waiting_for_input cannot be used as that is by definition 0 when
4527 lisp code is being evalled.
4528 This is also used in record_asynch_buffer_change.
4529 For that purpose, this must be 0
4530 when not inside wait_reading_process_output. */
4531 static int waiting_for_user_input_p
;
4534 wait_reading_process_output_unwind (data
)
4537 waiting_for_user_input_p
= XINT (data
);
4541 /* This is here so breakpoints can be put on it. */
4543 wait_reading_process_output_1 ()
4547 /* Use a wrapper around select to work around a bug in gdb 5.3.
4548 Normally, the wrapper is optimized away by inlining.
4550 If emacs is stopped inside select, the gdb backtrace doesn't
4551 show the function which called select, so it is practically
4552 impossible to step through wait_reading_process_output. */
4556 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4558 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4561 return select (n
, rfd
, wfd
, xfd
, tmo
);
4563 #define select select_wrapper
4566 /* Read and dispose of subprocess output while waiting for timeout to
4567 elapse and/or keyboard input to be available.
4570 timeout in seconds, or
4571 zero for no limit, or
4572 -1 means gobble data immediately available but don't wait for any.
4575 an additional duration to wait, measured in microseconds.
4576 If this is nonzero and time_limit is 0, then the timeout
4577 consists of MICROSECS only.
4579 READ_KBD is a lisp value:
4580 0 to ignore keyboard input, or
4581 1 to return when input is available, or
4582 -1 meaning caller will actually read the input, so don't throw to
4583 the quit handler, or
4585 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4586 output that arrives.
4588 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4589 (and gobble terminal input into the buffer if any arrives).
4591 If WAIT_PROC is specified, wait until something arrives from that
4592 process. The return value is true if we read some input from
4595 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4596 (suspending output from other processes). A negative value
4597 means don't run any timers either.
4599 If WAIT_PROC is specified, then the function returns true if we
4600 received input from that process before the timeout elapsed.
4601 Otherwise, return true if we received input from any process. */
4604 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4605 wait_for_cell
, wait_proc
, just_wait_proc
)
4606 int time_limit
, microsecs
, read_kbd
, do_display
;
4607 Lisp_Object wait_for_cell
;
4608 struct Lisp_Process
*wait_proc
;
4611 register int channel
, nfds
;
4612 SELECT_TYPE Available
;
4613 #ifdef NON_BLOCKING_CONNECT
4614 SELECT_TYPE Connecting
;
4617 int check_delay
, no_avail
;
4620 EMACS_TIME timeout
, end_time
;
4621 int wait_channel
= -1;
4622 int got_some_input
= 0;
4623 int count
= SPECPDL_INDEX ();
4625 FD_ZERO (&Available
);
4626 #ifdef NON_BLOCKING_CONNECT
4627 FD_ZERO (&Connecting
);
4630 if (time_limit
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4631 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4632 message ("Blocking call to accept-process-output with quit inhibited!!");
4634 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4635 if (wait_proc
!= NULL
)
4636 wait_channel
= wait_proc
->infd
;
4638 record_unwind_protect (wait_reading_process_output_unwind
,
4639 make_number (waiting_for_user_input_p
));
4640 waiting_for_user_input_p
= read_kbd
;
4642 /* Since we may need to wait several times,
4643 compute the absolute time to return at. */
4644 if (time_limit
|| microsecs
)
4646 EMACS_GET_TIME (end_time
);
4647 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4648 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4653 int timeout_reduced_for_timers
= 0;
4655 /* If calling from keyboard input, do not quit
4656 since we want to return C-g as an input character.
4657 Otherwise, do pending quit if requested. */
4662 process_pending_signals ();
4665 /* Exit now if the cell we're waiting for became non-nil. */
4666 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4669 /* Compute time from now till when time limit is up */
4670 /* Exit if already run out */
4671 if (time_limit
== -1)
4673 /* -1 specified for timeout means
4674 gobble output available now
4675 but don't wait at all. */
4677 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4679 else if (time_limit
|| microsecs
)
4681 EMACS_GET_TIME (timeout
);
4682 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4683 if (EMACS_TIME_NEG_P (timeout
))
4688 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4691 /* Normally we run timers here.
4692 But not if wait_for_cell; in those cases,
4693 the wait is supposed to be short,
4694 and those callers cannot handle running arbitrary Lisp code here. */
4695 if (NILP (wait_for_cell
)
4696 && just_wait_proc
>= 0)
4698 EMACS_TIME timer_delay
;
4702 int old_timers_run
= timers_run
;
4703 struct buffer
*old_buffer
= current_buffer
;
4704 Lisp_Object old_window
= selected_window
;
4706 timer_delay
= timer_check (1);
4708 /* If a timer has run, this might have changed buffers
4709 an alike. Make read_key_sequence aware of that. */
4710 if (timers_run
!= old_timers_run
4711 && (old_buffer
!= current_buffer
4712 || !EQ (old_window
, selected_window
))
4713 && waiting_for_user_input_p
== -1)
4714 record_asynch_buffer_change ();
4716 if (timers_run
!= old_timers_run
&& do_display
)
4717 /* We must retry, since a timer may have requeued itself
4718 and that could alter the time_delay. */
4719 redisplay_preserve_echo_area (9);
4723 while (!detect_input_pending ());
4725 /* If there is unread keyboard input, also return. */
4727 && requeued_events_pending_p ())
4730 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4732 EMACS_TIME difference
;
4733 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4734 if (EMACS_TIME_NEG_P (difference
))
4736 timeout
= timer_delay
;
4737 timeout_reduced_for_timers
= 1;
4740 /* If time_limit is -1, we are not going to wait at all. */
4741 else if (time_limit
!= -1)
4743 /* This is so a breakpoint can be put here. */
4744 wait_reading_process_output_1 ();
4748 /* Cause C-g and alarm signals to take immediate action,
4749 and cause input available signals to zero out timeout.
4751 It is important that we do this before checking for process
4752 activity. If we get a SIGCHLD after the explicit checks for
4753 process activity, timeout is the only way we will know. */
4755 set_waiting_for_input (&timeout
);
4757 /* If status of something has changed, and no input is
4758 available, notify the user of the change right away. After
4759 this explicit check, we'll let the SIGCHLD handler zap
4760 timeout to get our attention. */
4761 if (update_tick
!= process_tick
)
4764 #ifdef NON_BLOCKING_CONNECT
4768 Atemp
= input_wait_mask
;
4769 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4771 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4772 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4775 #ifdef NON_BLOCKING_CONNECT
4776 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4780 (SELECT_TYPE
*)0, &timeout
)
4783 /* It's okay for us to do this and then continue with
4784 the loop, since timeout has already been zeroed out. */
4785 clear_waiting_for_input ();
4786 status_notify (NULL
);
4787 if (do_display
) redisplay_preserve_echo_area (13);
4791 /* Don't wait for output from a non-running process. Just
4792 read whatever data has already been received. */
4793 if (wait_proc
&& wait_proc
->raw_status_new
)
4794 update_status (wait_proc
);
4796 && ! EQ (wait_proc
->status
, Qrun
)
4797 && ! EQ (wait_proc
->status
, Qconnect
))
4799 int nread
, total_nread
= 0;
4801 clear_waiting_for_input ();
4802 XSETPROCESS (proc
, wait_proc
);
4804 /* Read data from the process, until we exhaust it. */
4805 while (wait_proc
->infd
>= 0)
4807 nread
= read_process_output (proc
, wait_proc
->infd
);
4814 total_nread
+= nread
;
4818 else if (nread
== -1 && EIO
== errno
)
4822 else if (nread
== -1 && EAGAIN
== errno
)
4826 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4830 if (total_nread
> 0 && do_display
)
4831 redisplay_preserve_echo_area (10);
4836 /* Wait till there is something to do */
4838 if (wait_proc
&& just_wait_proc
)
4840 if (wait_proc
->infd
< 0) /* Terminated */
4842 FD_SET (wait_proc
->infd
, &Available
);
4844 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4846 else if (!NILP (wait_for_cell
))
4848 Available
= non_process_wait_mask
;
4850 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4855 Available
= non_keyboard_wait_mask
;
4857 Available
= input_wait_mask
;
4858 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4859 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4862 /* If frame size has changed or the window is newly mapped,
4863 redisplay now, before we start to wait. There is a race
4864 condition here; if a SIGIO arrives between now and the select
4865 and indicates that a frame is trashed, the select may block
4866 displaying a trashed screen. */
4867 if (frame_garbaged
&& do_display
)
4869 clear_waiting_for_input ();
4870 redisplay_preserve_echo_area (11);
4872 set_waiting_for_input (&timeout
);
4876 if (read_kbd
&& detect_input_pending ())
4883 #ifdef NON_BLOCKING_CONNECT
4885 Connecting
= connect_wait_mask
;
4888 #ifdef ADAPTIVE_READ_BUFFERING
4889 /* Set the timeout for adaptive read buffering if any
4890 process has non-zero read_output_skip and non-zero
4891 read_output_delay, and we are not reading output for a
4892 specific wait_channel. It is not executed if
4893 Vprocess_adaptive_read_buffering is nil. */
4894 if (process_output_skip
&& check_delay
> 0)
4896 int usecs
= EMACS_USECS (timeout
);
4897 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4898 usecs
= READ_OUTPUT_DELAY_MAX
;
4899 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4901 proc
= chan_process
[channel
];
4904 /* Find minimum non-zero read_output_delay among the
4905 processes with non-zero read_output_skip. */
4906 if (XPROCESS (proc
)->read_output_delay
> 0)
4909 if (!XPROCESS (proc
)->read_output_skip
)
4911 FD_CLR (channel
, &Available
);
4912 XPROCESS (proc
)->read_output_skip
= 0;
4913 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4914 usecs
= XPROCESS (proc
)->read_output_delay
;
4917 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4918 process_output_skip
= 0;
4921 #if defined (USE_GTK) || defined (HAVE_GCONF)
4923 #elif defined (HAVE_NS)
4928 (max (max (max_process_desc
, max_keyboard_desc
),
4931 #ifdef NON_BLOCKING_CONNECT
4932 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4936 (SELECT_TYPE
*)0, &timeout
);
4941 /* Make C-g and alarm signals set flags again */
4942 clear_waiting_for_input ();
4944 /* If we woke up due to SIGWINCH, actually change size now. */
4945 do_pending_window_change (0);
4947 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4948 /* We wanted the full specified time, so return now. */
4952 if (xerrno
== EINTR
)
4954 else if (xerrno
== EBADF
)
4957 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4958 the child's closure of the pts gives the parent a SIGHUP, and
4959 the ptc file descriptor is automatically closed,
4960 yielding EBADF here or at select() call above.
4961 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4962 in m/ibmrt-aix.h), and here we just ignore the select error.
4963 Cleanup occurs c/o status_notify after SIGCLD. */
4964 no_avail
= 1; /* Cannot depend on values returned */
4970 error ("select error: %s", emacs_strerror (xerrno
));
4975 FD_ZERO (&Available
);
4976 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4979 #if 0 /* When polling is used, interrupt_input is 0,
4980 so get_input_pending should read the input.
4981 So this should not be needed. */
4982 /* If we are using polling for input,
4983 and we see input available, make it get read now.
4984 Otherwise it might not actually get read for a second.
4985 And on hpux, since we turn off polling in wait_reading_process_output,
4986 it might never get read at all if we don't spend much time
4987 outside of wait_reading_process_output. */
4988 if (read_kbd
&& interrupt_input
4989 && keyboard_bit_set (&Available
)
4990 && input_polling_used ())
4991 kill (getpid (), SIGALRM
);
4994 /* Check for keyboard input */
4995 /* If there is any, return immediately
4996 to give it higher priority than subprocesses */
5000 int old_timers_run
= timers_run
;
5001 struct buffer
*old_buffer
= current_buffer
;
5002 Lisp_Object old_window
= selected_window
;
5005 if (detect_input_pending_run_timers (do_display
))
5007 swallow_events (do_display
);
5008 if (detect_input_pending_run_timers (do_display
))
5012 /* If a timer has run, this might have changed buffers
5013 an alike. Make read_key_sequence aware of that. */
5014 if (timers_run
!= old_timers_run
5015 && waiting_for_user_input_p
== -1
5016 && (old_buffer
!= current_buffer
5017 || !EQ (old_window
, selected_window
)))
5018 record_asynch_buffer_change ();
5024 /* If there is unread keyboard input, also return. */
5026 && requeued_events_pending_p ())
5029 /* If we are not checking for keyboard input now,
5030 do process events (but don't run any timers).
5031 This is so that X events will be processed.
5032 Otherwise they may have to wait until polling takes place.
5033 That would causes delays in pasting selections, for example.
5035 (We used to do this only if wait_for_cell.) */
5036 if (read_kbd
== 0 && detect_input_pending ())
5038 swallow_events (do_display
);
5039 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5040 if (detect_input_pending ())
5045 /* Exit now if the cell we're waiting for became non-nil. */
5046 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5050 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5051 go read it. This can happen with X on BSD after logging out.
5052 In that case, there really is no input and no SIGIO,
5053 but select says there is input. */
5055 if (read_kbd
&& interrupt_input
5056 && keyboard_bit_set (&Available
) && ! noninteractive
)
5057 kill (getpid (), SIGIO
);
5061 got_some_input
|= nfds
> 0;
5063 /* If checking input just got us a size-change event from X,
5064 obey it now if we should. */
5065 if (read_kbd
|| ! NILP (wait_for_cell
))
5066 do_pending_window_change (0);
5068 /* Check for data from a process. */
5069 if (no_avail
|| nfds
== 0)
5072 /* Really FIRST_PROC_DESC should be 0 on Unix,
5073 but this is safer in the short run. */
5074 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5076 if (FD_ISSET (channel
, &Available
)
5077 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
5081 /* If waiting for this channel, arrange to return as
5082 soon as no more input to be processed. No more
5084 if (wait_channel
== channel
)
5090 proc
= chan_process
[channel
];
5094 /* If this is a server stream socket, accept connection. */
5095 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5097 server_accept_connection (proc
, channel
);
5101 /* Read data from the process, starting with our
5102 buffered-ahead character if we have one. */
5104 nread
= read_process_output (proc
, channel
);
5107 /* Since read_process_output can run a filter,
5108 which can call accept-process-output,
5109 don't try to read from any other processes
5110 before doing the select again. */
5111 FD_ZERO (&Available
);
5114 redisplay_preserve_echo_area (12);
5117 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5120 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5121 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5123 else if (nread
== -1 && errno
== EAGAIN
)
5127 else if (nread
== -1 && errno
== EAGAIN
)
5129 /* Note that we cannot distinguish between no input
5130 available now and a closed pipe.
5131 With luck, a closed pipe will be accompanied by
5132 subprocess termination and SIGCHLD. */
5133 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5135 #endif /* O_NDELAY */
5136 #endif /* O_NONBLOCK */
5138 /* On some OSs with ptys, when the process on one end of
5139 a pty exits, the other end gets an error reading with
5140 errno = EIO instead of getting an EOF (0 bytes read).
5141 Therefore, if we get an error reading and errno =
5142 EIO, just continue, because the child process has
5143 exited and should clean itself up soon (e.g. when we
5146 However, it has been known to happen that the SIGCHLD
5147 got lost. So raise the signal again just in case.
5149 else if (nread
== -1 && errno
== EIO
)
5151 /* Clear the descriptor now, so we only raise the
5152 signal once. Don't do this if `process' is only
5154 if (XPROCESS (proc
)->pid
!= -2)
5156 FD_CLR (channel
, &input_wait_mask
);
5157 FD_CLR (channel
, &non_keyboard_wait_mask
);
5159 kill (getpid (), SIGCHLD
);
5162 #endif /* HAVE_PTYS */
5163 /* If we can detect process termination, don't consider the process
5164 gone just because its pipe is closed. */
5166 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5171 /* Preserve status of processes already terminated. */
5172 XPROCESS (proc
)->tick
= ++process_tick
;
5173 deactivate_process (proc
);
5174 if (XPROCESS (proc
)->raw_status_new
)
5175 update_status (XPROCESS (proc
));
5176 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5177 XPROCESS (proc
)->status
5178 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5181 #ifdef NON_BLOCKING_CONNECT
5182 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5183 && FD_ISSET (channel
, &connect_wait_mask
))
5185 struct Lisp_Process
*p
;
5187 FD_CLR (channel
, &connect_wait_mask
);
5188 if (--num_pending_connects
< 0)
5191 proc
= chan_process
[channel
];
5195 p
= XPROCESS (proc
);
5198 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5199 So only use it on systems where it is known to work. */
5201 int xlen
= sizeof(xerrno
);
5202 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5207 struct sockaddr pname
;
5208 int pnamelen
= sizeof(pname
);
5210 /* If connection failed, getpeername will fail. */
5212 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
5214 /* Obtain connect failure code through error slippage. */
5217 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
5224 p
->tick
= ++process_tick
;
5225 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5226 deactivate_process (proc
);
5231 /* Execute the sentinel here. If we had relied on
5232 status_notify to do it later, it will read input
5233 from the process before calling the sentinel. */
5234 exec_sentinel (proc
, build_string ("open\n"));
5235 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5237 FD_SET (p
->infd
, &input_wait_mask
);
5238 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5242 #endif /* NON_BLOCKING_CONNECT */
5243 } /* end for each file descriptor */
5244 } /* end while exit conditions not met */
5246 unbind_to (count
, Qnil
);
5248 /* If calling from keyboard input, do not quit
5249 since we want to return C-g as an input character.
5250 Otherwise, do pending quit if requested. */
5253 /* Prevent input_pending from remaining set if we quit. */
5254 clear_input_pending ();
5258 return got_some_input
;
5261 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5264 read_process_output_call (fun_and_args
)
5265 Lisp_Object fun_and_args
;
5267 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5271 read_process_output_error_handler (error
)
5274 cmd_error_internal (error
, "error in process filter: ");
5276 update_echo_area ();
5277 Fsleep_for (make_number (2), Qnil
);
5281 /* Read pending output from the process channel,
5282 starting with our buffered-ahead character if we have one.
5283 Yield number of decoded characters read.
5285 This function reads at most 4096 characters.
5286 If you want to read all available subprocess output,
5287 you must call it repeatedly until it returns zero.
5289 The characters read are decoded according to PROC's coding-system
5293 read_process_output (proc
, channel
)
5295 register int channel
;
5297 register int nbytes
;
5299 register Lisp_Object outstream
;
5300 register struct Lisp_Process
*p
= XPROCESS (proc
);
5301 register int opoint
;
5302 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5303 int carryover
= p
->decoding_carryover
;
5305 int count
= SPECPDL_INDEX ();
5306 Lisp_Object odeactivate
;
5308 chars
= (char *) alloca (carryover
+ readmax
);
5310 /* See the comment above. */
5311 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5313 #ifdef DATAGRAM_SOCKETS
5314 /* We have a working select, so proc_buffered_char is always -1. */
5315 if (DATAGRAM_CHAN_P (channel
))
5317 int len
= datagram_address
[channel
].len
;
5318 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5319 0, datagram_address
[channel
].sa
, &len
);
5323 if (proc_buffered_char
[channel
] < 0)
5325 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5326 #ifdef ADAPTIVE_READ_BUFFERING
5327 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5329 int delay
= p
->read_output_delay
;
5332 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5335 process_output_delay_count
++;
5336 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5339 else if (delay
> 0 && (nbytes
== readmax
))
5341 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5343 process_output_delay_count
--;
5345 p
->read_output_delay
= delay
;
5348 p
->read_output_skip
= 1;
5349 process_output_skip
= 1;
5356 chars
[carryover
] = proc_buffered_char
[channel
];
5357 proc_buffered_char
[channel
] = -1;
5358 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5362 nbytes
= nbytes
+ 1;
5365 p
->decoding_carryover
= 0;
5367 /* At this point, NBYTES holds number of bytes just received
5368 (including the one in proc_buffered_char[channel]). */
5371 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5373 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5376 /* Now set NBYTES how many bytes we must decode. */
5377 nbytes
+= carryover
;
5379 odeactivate
= Vdeactivate_mark
;
5380 /* There's no good reason to let process filters change the current
5381 buffer, and many callers of accept-process-output, sit-for, and
5382 friends don't expect current-buffer to be changed from under them. */
5383 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5385 /* Read and dispose of the process output. */
5386 outstream
= p
->filter
;
5387 if (!NILP (outstream
))
5389 Lisp_Object obuffer
, okeymap
;
5391 int outer_running_asynch_code
= running_asynch_code
;
5392 int waiting
= waiting_for_user_input_p
;
5394 /* No need to gcpro these, because all we do with them later
5395 is test them for EQness, and none of them should be a string. */
5396 XSETBUFFER (obuffer
, current_buffer
);
5397 okeymap
= current_buffer
->keymap
;
5399 /* We inhibit quit here instead of just catching it so that
5400 hitting ^G when a filter happens to be running won't screw
5402 specbind (Qinhibit_quit
, Qt
);
5403 specbind (Qlast_nonmenu_event
, Qt
);
5405 /* In case we get recursively called,
5406 and we already saved the match data nonrecursively,
5407 save the same match data in safely recursive fashion. */
5408 if (outer_running_asynch_code
)
5411 /* Don't clobber the CURRENT match data, either! */
5412 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5413 restore_search_regs ();
5414 record_unwind_save_match_data ();
5415 Fset_match_data (tem
, Qt
);
5418 /* For speed, if a search happens within this code,
5419 save the match data in a special nonrecursive fashion. */
5420 running_asynch_code
= 1;
5422 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5423 text
= coding
->dst_object
;
5424 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5425 /* A new coding system might be found. */
5426 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5428 p
->decode_coding_system
= Vlast_coding_system_used
;
5430 /* Don't call setup_coding_system for
5431 proc_decode_coding_system[channel] here. It is done in
5432 detect_coding called via decode_coding above. */
5434 /* If a coding system for encoding is not yet decided, we set
5435 it as the same as coding-system for decoding.
5437 But, before doing that we must check if
5438 proc_encode_coding_system[p->outfd] surely points to a
5439 valid memory because p->outfd will be changed once EOF is
5440 sent to the process. */
5441 if (NILP (p
->encode_coding_system
)
5442 && proc_encode_coding_system
[p
->outfd
])
5444 p
->encode_coding_system
5445 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5446 setup_coding_system (p
->encode_coding_system
,
5447 proc_encode_coding_system
[p
->outfd
]);
5451 if (coding
->carryover_bytes
> 0)
5453 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5454 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5455 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5456 coding
->carryover_bytes
);
5457 p
->decoding_carryover
= coding
->carryover_bytes
;
5459 if (SBYTES (text
) > 0)
5460 internal_condition_case_1 (read_process_output_call
,
5462 Fcons (proc
, Fcons (text
, Qnil
))),
5463 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5464 read_process_output_error_handler
);
5466 /* If we saved the match data nonrecursively, restore it now. */
5467 restore_search_regs ();
5468 running_asynch_code
= outer_running_asynch_code
;
5470 /* Restore waiting_for_user_input_p as it was
5471 when we were called, in case the filter clobbered it. */
5472 waiting_for_user_input_p
= waiting
;
5474 #if 0 /* Call record_asynch_buffer_change unconditionally,
5475 because we might have changed minor modes or other things
5476 that affect key bindings. */
5477 if (! EQ (Fcurrent_buffer (), obuffer
)
5478 || ! EQ (current_buffer
->keymap
, okeymap
))
5480 /* But do it only if the caller is actually going to read events.
5481 Otherwise there's no need to make him wake up, and it could
5482 cause trouble (for example it would make sit_for return). */
5483 if (waiting_for_user_input_p
== -1)
5484 record_asynch_buffer_change ();
5487 /* If no filter, write into buffer if it isn't dead. */
5488 else if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5490 Lisp_Object old_read_only
;
5491 int old_begv
, old_zv
;
5492 int old_begv_byte
, old_zv_byte
;
5493 int before
, before_byte
;
5498 Fset_buffer (p
->buffer
);
5500 opoint_byte
= PT_BYTE
;
5501 old_read_only
= current_buffer
->read_only
;
5504 old_begv_byte
= BEGV_BYTE
;
5505 old_zv_byte
= ZV_BYTE
;
5507 current_buffer
->read_only
= Qnil
;
5509 /* Insert new output into buffer
5510 at the current end-of-output marker,
5511 thus preserving logical ordering of input and output. */
5512 if (XMARKER (p
->mark
)->buffer
)
5513 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5514 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5517 SET_PT_BOTH (ZV
, ZV_BYTE
);
5519 before_byte
= PT_BYTE
;
5521 /* If the output marker is outside of the visible region, save
5522 the restriction and widen. */
5523 if (! (BEGV
<= PT
&& PT
<= ZV
))
5526 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5527 text
= coding
->dst_object
;
5528 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5529 /* A new coding system might be found. See the comment in the
5530 similar code in the previous `if' block. */
5531 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5533 p
->decode_coding_system
= Vlast_coding_system_used
;
5534 if (NILP (p
->encode_coding_system
)
5535 && proc_encode_coding_system
[p
->outfd
])
5537 p
->encode_coding_system
5538 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5539 setup_coding_system (p
->encode_coding_system
,
5540 proc_encode_coding_system
[p
->outfd
]);
5543 if (coding
->carryover_bytes
> 0)
5545 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5546 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5547 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5548 coding
->carryover_bytes
);
5549 p
->decoding_carryover
= coding
->carryover_bytes
;
5551 /* Adjust the multibyteness of TEXT to that of the buffer. */
5552 if (NILP (current_buffer
->enable_multibyte_characters
)
5553 != ! STRING_MULTIBYTE (text
))
5554 text
= (STRING_MULTIBYTE (text
)
5555 ? Fstring_as_unibyte (text
)
5556 : Fstring_to_multibyte (text
));
5557 /* Insert before markers in case we are inserting where
5558 the buffer's mark is, and the user's next command is Meta-y. */
5559 insert_from_string_before_markers (text
, 0, 0,
5560 SCHARS (text
), SBYTES (text
), 0);
5562 /* Make sure the process marker's position is valid when the
5563 process buffer is changed in the signal_after_change above.
5564 W3 is known to do that. */
5565 if (BUFFERP (p
->buffer
)
5566 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5567 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5569 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5571 update_mode_lines
++;
5573 /* Make sure opoint and the old restrictions
5574 float ahead of any new text just as point would. */
5575 if (opoint
>= before
)
5577 opoint
+= PT
- before
;
5578 opoint_byte
+= PT_BYTE
- before_byte
;
5580 if (old_begv
> before
)
5582 old_begv
+= PT
- before
;
5583 old_begv_byte
+= PT_BYTE
- before_byte
;
5585 if (old_zv
>= before
)
5587 old_zv
+= PT
- before
;
5588 old_zv_byte
+= PT_BYTE
- before_byte
;
5591 /* If the restriction isn't what it should be, set it. */
5592 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5593 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5596 current_buffer
->read_only
= old_read_only
;
5597 SET_PT_BOTH (opoint
, opoint_byte
);
5599 /* Handling the process output should not deactivate the mark. */
5600 Vdeactivate_mark
= odeactivate
;
5602 unbind_to (count
, Qnil
);
5606 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5608 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5609 This is intended for use by asynchronous process output filters and sentinels. */)
5612 return (waiting_for_user_input_p
? Qt
: Qnil
);
5615 /* Sending data to subprocess */
5617 jmp_buf send_process_frame
;
5618 Lisp_Object process_sent_to
;
5621 send_process_trap ()
5623 SIGNAL_THREAD_CHECK (SIGPIPE
);
5624 sigunblock (sigmask (SIGPIPE
));
5625 longjmp (send_process_frame
, 1);
5628 /* Send some data to process PROC.
5629 BUF is the beginning of the data; LEN is the number of characters.
5630 OBJECT is the Lisp object that the data comes from. If OBJECT is
5631 nil or t, it means that the data comes from C string.
5633 If OBJECT is not nil, the data is encoded by PROC's coding-system
5634 for encoding before it is sent.
5636 This function can evaluate Lisp code and can garbage collect. */
5639 send_process (proc
, buf
, len
, object
)
5640 volatile Lisp_Object proc
;
5641 unsigned char *volatile buf
;
5643 volatile Lisp_Object object
;
5645 /* Use volatile to protect variables from being clobbered by longjmp. */
5646 struct Lisp_Process
*p
= XPROCESS (proc
);
5648 struct coding_system
*coding
;
5649 struct gcpro gcpro1
;
5650 SIGTYPE (*volatile old_sigpipe
) ();
5654 if (p
->raw_status_new
)
5656 if (! EQ (p
->status
, Qrun
))
5657 error ("Process %s not running", SDATA (p
->name
));
5659 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5661 coding
= proc_encode_coding_system
[p
->outfd
];
5662 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5664 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5665 || (BUFFERP (object
)
5666 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5669 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5670 /* The coding system for encoding was changed to raw-text
5671 because we sent a unibyte text previously. Now we are
5672 sending a multibyte text, thus we must encode it by the
5673 original coding system specified for the current process. */
5674 setup_coding_system (p
->encode_coding_system
, coding
);
5675 coding
->src_multibyte
= 1;
5679 /* For sending a unibyte text, character code conversion should
5680 not take place but EOL conversion should. So, setup raw-text
5681 or one of the subsidiary if we have not yet done it. */
5682 if (CODING_REQUIRE_ENCODING (coding
))
5684 if (CODING_REQUIRE_FLUSHING (coding
))
5686 /* But, before changing the coding, we must flush out data. */
5687 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5688 send_process (proc
, "", 0, Qt
);
5689 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5691 setup_coding_system (raw_text_coding_system
5692 (Vlast_coding_system_used
),
5694 coding
->src_multibyte
= 0;
5697 coding
->dst_multibyte
= 0;
5699 if (CODING_REQUIRE_ENCODING (coding
))
5701 coding
->dst_object
= Qt
;
5702 if (BUFFERP (object
))
5704 int from_byte
, from
, to
;
5705 int save_pt
, save_pt_byte
;
5706 struct buffer
*cur
= current_buffer
;
5708 set_buffer_internal (XBUFFER (object
));
5709 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5711 from_byte
= PTR_BYTE_POS (buf
);
5712 from
= BYTE_TO_CHAR (from_byte
);
5713 to
= BYTE_TO_CHAR (from_byte
+ len
);
5714 TEMP_SET_PT_BOTH (from
, from_byte
);
5715 encode_coding_object (coding
, object
, from
, from_byte
,
5716 to
, from_byte
+ len
, Qt
);
5717 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5718 set_buffer_internal (cur
);
5720 else if (STRINGP (object
))
5722 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5723 SBYTES (object
), Qt
);
5727 coding
->dst_object
= make_unibyte_string (buf
, len
);
5728 coding
->produced
= len
;
5731 len
= coding
->produced
;
5732 object
= coding
->dst_object
;
5733 buf
= SDATA (object
);
5736 if (pty_max_bytes
== 0)
5738 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5739 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5740 if (pty_max_bytes
< 0)
5741 pty_max_bytes
= 250;
5743 pty_max_bytes
= 250;
5745 /* Deduct one, to leave space for the eof. */
5749 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5750 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5751 when returning with longjmp despite being declared volatile. */
5752 if (!setjmp (send_process_frame
))
5754 process_sent_to
= proc
;
5759 /* Send this batch, using one or more write calls. */
5762 int outfd
= p
->outfd
;
5763 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5764 #ifdef DATAGRAM_SOCKETS
5765 if (DATAGRAM_CHAN_P (outfd
))
5767 rv
= sendto (outfd
, (char *) buf
, this,
5768 0, datagram_address
[outfd
].sa
,
5769 datagram_address
[outfd
].len
);
5770 if (rv
< 0 && errno
== EMSGSIZE
)
5772 signal (SIGPIPE
, old_sigpipe
);
5773 report_file_error ("sending datagram",
5774 Fcons (proc
, Qnil
));
5780 rv
= emacs_write (outfd
, (char *) buf
, this);
5781 #ifdef ADAPTIVE_READ_BUFFERING
5782 if (p
->read_output_delay
> 0
5783 && p
->adaptive_read_buffering
== 1)
5785 p
->read_output_delay
= 0;
5786 process_output_delay_count
--;
5787 p
->read_output_skip
= 0;
5791 signal (SIGPIPE
, old_sigpipe
);
5797 || errno
== EWOULDBLOCK
5803 /* Buffer is full. Wait, accepting input;
5804 that may allow the program
5805 to finish doing output and read more. */
5809 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5810 /* A gross hack to work around a bug in FreeBSD.
5811 In the following sequence, read(2) returns
5815 write(2) 954 bytes, get EAGAIN
5816 read(2) 1024 bytes in process_read_output
5817 read(2) 11 bytes in process_read_output
5819 That is, read(2) returns more bytes than have
5820 ever been written successfully. The 1033 bytes
5821 read are the 1022 bytes written successfully
5822 after processing (for example with CRs added if
5823 the terminal is set up that way which it is
5824 here). The same bytes will be seen again in a
5825 later read(2), without the CRs. */
5827 if (errno
== EAGAIN
)
5830 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5832 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5834 /* Running filters might relocate buffers or strings.
5835 Arrange to relocate BUF. */
5836 if (BUFFERP (object
))
5837 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5838 else if (STRINGP (object
))
5839 offset
= buf
- SDATA (object
);
5841 #ifdef EMACS_HAS_USECS
5842 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5844 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5847 if (BUFFERP (object
))
5848 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5849 else if (STRINGP (object
))
5850 buf
= offset
+ SDATA (object
);
5855 /* This is a real error. */
5856 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5866 signal (SIGPIPE
, old_sigpipe
);
5867 proc
= process_sent_to
;
5868 p
= XPROCESS (proc
);
5869 p
->raw_status_new
= 0;
5870 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5871 p
->tick
= ++process_tick
;
5872 deactivate_process (proc
);
5873 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5879 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5881 doc
: /* Send current contents of region as input to PROCESS.
5882 PROCESS may be a process, a buffer, the name of a process or buffer, or
5883 nil, indicating the current buffer's process.
5884 Called from program, takes three arguments, PROCESS, START and END.
5885 If the region is more than 500 characters long,
5886 it is sent in several bunches. This may happen even for shorter regions.
5887 Output from processes can arrive in between bunches. */)
5888 (process
, start
, end
)
5889 Lisp_Object process
, start
, end
;
5894 proc
= get_process (process
);
5895 validate_region (&start
, &end
);
5897 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5898 move_gap (XINT (start
));
5900 start1
= CHAR_TO_BYTE (XINT (start
));
5901 end1
= CHAR_TO_BYTE (XINT (end
));
5902 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5903 Fcurrent_buffer ());
5908 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5910 doc
: /* Send PROCESS the contents of STRING as input.
5911 PROCESS may be a process, a buffer, the name of a process or buffer, or
5912 nil, indicating the current buffer's process.
5913 If STRING is more than 500 characters long,
5914 it is sent in several bunches. This may happen even for shorter strings.
5915 Output from processes can arrive in between bunches. */)
5917 Lisp_Object process
, string
;
5920 CHECK_STRING (string
);
5921 proc
= get_process (process
);
5922 send_process (proc
, SDATA (string
),
5923 SBYTES (string
), string
);
5927 /* Return the foreground process group for the tty/pty that
5928 the process P uses. */
5930 emacs_get_tty_pgrp (p
)
5931 struct Lisp_Process
*p
;
5936 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5939 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5940 master side. Try the slave side. */
5941 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
5945 ioctl (fd
, TIOCGPGRP
, &gid
);
5949 #endif /* defined (TIOCGPGRP ) */
5954 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5955 Sprocess_running_child_p
, 0, 1, 0,
5956 doc
: /* Return t if PROCESS has given the terminal to a child.
5957 If the operating system does not make it possible to find out,
5958 return t unconditionally. */)
5960 Lisp_Object process
;
5962 /* Initialize in case ioctl doesn't exist or gives an error,
5963 in a way that will cause returning t. */
5966 struct Lisp_Process
*p
;
5968 proc
= get_process (process
);
5969 p
= XPROCESS (proc
);
5971 if (!EQ (p
->type
, Qreal
))
5972 error ("Process %s is not a subprocess",
5975 error ("Process %s is not active",
5978 gid
= emacs_get_tty_pgrp (p
);
5985 /* send a signal number SIGNO to PROCESS.
5986 If CURRENT_GROUP is t, that means send to the process group
5987 that currently owns the terminal being used to communicate with PROCESS.
5988 This is used for various commands in shell mode.
5989 If CURRENT_GROUP is lambda, that means send to the process group
5990 that currently owns the terminal, but only if it is NOT the shell itself.
5992 If NOMSG is zero, insert signal-announcements into process's buffers
5995 If we can, we try to signal PROCESS by sending control characters
5996 down the pty. This allows us to signal inferiors who have changed
5997 their uid, for which killpg would return an EPERM error. */
6000 process_send_signal (process
, signo
, current_group
, nomsg
)
6001 Lisp_Object process
;
6003 Lisp_Object current_group
;
6007 register struct Lisp_Process
*p
;
6011 proc
= get_process (process
);
6012 p
= XPROCESS (proc
);
6014 if (!EQ (p
->type
, Qreal
))
6015 error ("Process %s is not a subprocess",
6018 error ("Process %s is not active",
6022 current_group
= Qnil
;
6024 /* If we are using pgrps, get a pgrp number and make it negative. */
6025 if (NILP (current_group
))
6026 /* Send the signal to the shell's process group. */
6030 #ifdef SIGNALS_VIA_CHARACTERS
6031 /* If possible, send signals to the entire pgrp
6032 by sending an input character to it. */
6034 /* TERMIOS is the latest and bestest, and seems most likely to
6035 work. If the system has it, use it. */
6038 cc_t
*sig_char
= NULL
;
6040 tcgetattr (p
->infd
, &t
);
6045 sig_char
= &t
.c_cc
[VINTR
];
6049 sig_char
= &t
.c_cc
[VQUIT
];
6053 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6054 sig_char
= &t
.c_cc
[VSWTCH
];
6056 sig_char
= &t
.c_cc
[VSUSP
];
6061 if (sig_char
&& *sig_char
!= CDISABLE
)
6063 send_process (proc
, sig_char
, 1, Qnil
);
6066 /* If we can't send the signal with a character,
6067 fall through and send it another way. */
6068 #else /* ! HAVE_TERMIOS */
6070 /* On Berkeley descendants, the following IOCTL's retrieve the
6071 current control characters. */
6072 #if defined (TIOCGLTC) && defined (TIOCGETC)
6080 ioctl (p
->infd
, TIOCGETC
, &c
);
6081 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
6084 ioctl (p
->infd
, TIOCGETC
, &c
);
6085 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6089 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6090 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6092 #endif /* ! defined (SIGTSTP) */
6095 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6097 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6104 ioctl (p
->infd
, TCGETA
, &t
);
6105 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6108 ioctl (p
->infd
, TCGETA
, &t
);
6109 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6113 ioctl (p
->infd
, TCGETA
, &t
);
6114 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6116 #endif /* ! defined (SIGTSTP) */
6118 #else /* ! defined (TCGETA) */
6119 Your configuration files are messed up
.
6120 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6121 you'd better be using one of the alternatives above! */
6122 #endif /* ! defined (TCGETA) */
6123 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6124 /* In this case, the code above should alway return. */
6126 #endif /* ! defined HAVE_TERMIOS */
6128 /* The code above may fall through if it can't
6129 handle the signal. */
6130 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6133 /* Get the current pgrp using the tty itself, if we have that.
6134 Otherwise, use the pty to get the pgrp.
6135 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6136 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6137 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6138 His patch indicates that if TIOCGPGRP returns an error, then
6139 we should just assume that p->pid is also the process group id. */
6141 gid
= emacs_get_tty_pgrp (p
);
6144 /* If we can't get the information, assume
6145 the shell owns the tty. */
6148 /* It is not clear whether anything really can set GID to -1.
6149 Perhaps on some system one of those ioctls can or could do so.
6150 Or perhaps this is vestigial. */
6153 #else /* ! defined (TIOCGPGRP ) */
6154 /* Can't select pgrps on this system, so we know that
6155 the child itself heads the pgrp. */
6157 #endif /* ! defined (TIOCGPGRP ) */
6159 /* If current_group is lambda, and the shell owns the terminal,
6160 don't send any signal. */
6161 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6169 p
->raw_status_new
= 0;
6171 p
->tick
= ++process_tick
;
6174 status_notify (NULL
);
6175 redisplay_preserve_echo_area (13);
6178 #endif /* ! defined (SIGCONT) */
6182 flush_pending_output (p
->infd
);
6186 /* If we don't have process groups, send the signal to the immediate
6187 subprocess. That isn't really right, but it's better than any
6188 obvious alternative. */
6191 kill (p
->pid
, signo
);
6195 /* gid may be a pid, or minus a pgrp's number */
6197 if (!NILP (current_group
))
6199 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6200 EMACS_KILLPG (gid
, signo
);
6207 #else /* ! defined (TIOCSIGSEND) */
6208 EMACS_KILLPG (gid
, signo
);
6209 #endif /* ! defined (TIOCSIGSEND) */
6212 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6213 doc
: /* Interrupt process PROCESS.
6214 PROCESS may be a process, a buffer, or the name of a process or buffer.
6215 No arg or nil means current buffer's process.
6216 Second arg CURRENT-GROUP non-nil means send signal to
6217 the current process-group of the process's controlling terminal
6218 rather than to the process's own process group.
6219 If the process is a shell, this means interrupt current subjob
6220 rather than the shell.
6222 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6223 don't send the signal. */)
6224 (process
, current_group
)
6225 Lisp_Object process
, current_group
;
6227 process_send_signal (process
, SIGINT
, current_group
, 0);
6231 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6232 doc
: /* Kill process PROCESS. May be process or name of one.
6233 See function `interrupt-process' for more details on usage. */)
6234 (process
, current_group
)
6235 Lisp_Object process
, current_group
;
6237 process_send_signal (process
, SIGKILL
, current_group
, 0);
6241 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6242 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6243 See function `interrupt-process' for more details on usage. */)
6244 (process
, current_group
)
6245 Lisp_Object process
, current_group
;
6247 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6251 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6252 doc
: /* Stop process PROCESS. May be process or name of one.
6253 See function `interrupt-process' for more details on usage.
6254 If PROCESS is a network or serial process, inhibit handling of incoming
6256 (process
, current_group
)
6257 Lisp_Object process
, current_group
;
6260 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6262 struct Lisp_Process
*p
;
6264 p
= XPROCESS (process
);
6265 if (NILP (p
->command
)
6268 FD_CLR (p
->infd
, &input_wait_mask
);
6269 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6276 error ("No SIGTSTP support");
6278 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6283 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6284 doc
: /* Continue process PROCESS. May be process or name of one.
6285 See function `interrupt-process' for more details on usage.
6286 If PROCESS is a network or serial process, resume handling of incoming
6288 (process
, current_group
)
6289 Lisp_Object process
, current_group
;
6292 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6294 struct Lisp_Process
*p
;
6296 p
= XPROCESS (process
);
6297 if (EQ (p
->command
, Qt
)
6299 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6301 FD_SET (p
->infd
, &input_wait_mask
);
6302 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6304 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6305 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6308 tcflush (p
->infd
, TCIFLUSH
);
6316 process_send_signal (process
, SIGCONT
, current_group
, 0);
6318 error ("No SIGCONT support");
6323 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6324 2, 2, "sProcess (name or number): \nnSignal code: ",
6325 doc
: /* Send PROCESS the signal with code SIGCODE.
6326 PROCESS may also be a number specifying the process id of the
6327 process to signal; in this case, the process need not be a child of
6329 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6331 Lisp_Object process
, sigcode
;
6335 if (INTEGERP (process
))
6337 pid
= XINT (process
);
6341 if (FLOATP (process
))
6343 pid
= (pid_t
) XFLOAT_DATA (process
);
6347 if (STRINGP (process
))
6350 if (tem
= Fget_process (process
), NILP (tem
))
6352 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6359 process
= get_process (process
);
6364 CHECK_PROCESS (process
);
6365 pid
= XPROCESS (process
)->pid
;
6367 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6371 #define parse_signal(NAME, VALUE) \
6372 else if (!xstrcasecmp (name, NAME)) \
6373 XSETINT (sigcode, VALUE)
6375 if (INTEGERP (sigcode
))
6379 unsigned char *name
;
6381 CHECK_SYMBOL (sigcode
);
6382 name
= SDATA (SYMBOL_NAME (sigcode
));
6384 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6390 parse_signal ("usr1", SIGUSR1
);
6393 parse_signal ("usr2", SIGUSR2
);
6396 parse_signal ("term", SIGTERM
);
6399 parse_signal ("hup", SIGHUP
);
6402 parse_signal ("int", SIGINT
);
6405 parse_signal ("quit", SIGQUIT
);
6408 parse_signal ("ill", SIGILL
);
6411 parse_signal ("abrt", SIGABRT
);
6414 parse_signal ("emt", SIGEMT
);
6417 parse_signal ("kill", SIGKILL
);
6420 parse_signal ("fpe", SIGFPE
);
6423 parse_signal ("bus", SIGBUS
);
6426 parse_signal ("segv", SIGSEGV
);
6429 parse_signal ("sys", SIGSYS
);
6432 parse_signal ("pipe", SIGPIPE
);
6435 parse_signal ("alrm", SIGALRM
);
6438 parse_signal ("urg", SIGURG
);
6441 parse_signal ("stop", SIGSTOP
);
6444 parse_signal ("tstp", SIGTSTP
);
6447 parse_signal ("cont", SIGCONT
);
6450 parse_signal ("chld", SIGCHLD
);
6453 parse_signal ("ttin", SIGTTIN
);
6456 parse_signal ("ttou", SIGTTOU
);
6459 parse_signal ("io", SIGIO
);
6462 parse_signal ("xcpu", SIGXCPU
);
6465 parse_signal ("xfsz", SIGXFSZ
);
6468 parse_signal ("vtalrm", SIGVTALRM
);
6471 parse_signal ("prof", SIGPROF
);
6474 parse_signal ("winch", SIGWINCH
);
6477 parse_signal ("info", SIGINFO
);
6480 error ("Undefined signal name %s", name
);
6485 return make_number (kill (pid
, XINT (sigcode
)));
6488 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6489 doc
: /* Make PROCESS see end-of-file in its input.
6490 EOF comes after any text already sent to it.
6491 PROCESS may be a process, a buffer, the name of a process or buffer, or
6492 nil, indicating the current buffer's process.
6493 If PROCESS is a network connection, or is a process communicating
6494 through a pipe (as opposed to a pty), then you cannot send any more
6495 text to PROCESS after you call this function.
6496 If PROCESS is a serial process, wait until all output written to the
6497 process has been transmitted to the serial port. */)
6499 Lisp_Object process
;
6502 struct coding_system
*coding
;
6504 if (DATAGRAM_CONN_P (process
))
6507 proc
= get_process (process
);
6508 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6510 /* Make sure the process is really alive. */
6511 if (XPROCESS (proc
)->raw_status_new
)
6512 update_status (XPROCESS (proc
));
6513 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6514 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6516 if (CODING_REQUIRE_FLUSHING (coding
))
6518 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6519 send_process (proc
, "", 0, Qnil
);
6522 if (XPROCESS (proc
)->pty_flag
)
6523 send_process (proc
, "\004", 1, Qnil
);
6524 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6527 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6528 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6530 /* Do nothing on Windows because writes are blocking. */
6534 int old_outfd
, new_outfd
;
6536 #ifdef HAVE_SHUTDOWN
6537 /* If this is a network connection, or socketpair is used
6538 for communication with the subprocess, call shutdown to cause EOF.
6539 (In some old system, shutdown to socketpair doesn't work.
6540 Then we just can't win.) */
6541 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6542 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6543 shutdown (XPROCESS (proc
)->outfd
, 1);
6544 /* In case of socketpair, outfd == infd, so don't close it. */
6545 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6546 emacs_close (XPROCESS (proc
)->outfd
);
6547 #else /* not HAVE_SHUTDOWN */
6548 emacs_close (XPROCESS (proc
)->outfd
);
6549 #endif /* not HAVE_SHUTDOWN */
6550 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6553 old_outfd
= XPROCESS (proc
)->outfd
;
6555 if (!proc_encode_coding_system
[new_outfd
])
6556 proc_encode_coding_system
[new_outfd
]
6557 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6558 bcopy (proc_encode_coding_system
[old_outfd
],
6559 proc_encode_coding_system
[new_outfd
],
6560 sizeof (struct coding_system
));
6561 bzero (proc_encode_coding_system
[old_outfd
],
6562 sizeof (struct coding_system
));
6564 XPROCESS (proc
)->outfd
= new_outfd
;
6569 /* Kill all processes associated with `buffer'.
6570 If `buffer' is nil, kill all processes */
6573 kill_buffer_processes (buffer
)
6576 Lisp_Object tail
, proc
;
6578 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6580 proc
= XCDR (XCAR (tail
));
6582 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6584 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6585 Fdelete_process (proc
);
6586 else if (XPROCESS (proc
)->infd
>= 0)
6587 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6592 /* On receipt of a signal that a child status has changed, loop asking
6593 about children with changed statuses until the system says there
6596 All we do is change the status; we do not run sentinels or print
6597 notifications. That is saved for the next time keyboard input is
6598 done, in order to avoid timing errors.
6600 ** WARNING: this can be called during garbage collection.
6601 Therefore, it must not be fooled by the presence of mark bits in
6604 ** USG WARNING: Although it is not obvious from the documentation
6605 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6606 signal() before executing at least one wait(), otherwise the
6607 handler will be called again, resulting in an infinite loop. The
6608 relevant portion of the documentation reads "SIGCLD signals will be
6609 queued and the signal-catching function will be continually
6610 reentered until the queue is empty". Invoking signal() causes the
6611 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6614 ** Malloc WARNING: This should never call malloc either directly or
6615 indirectly; if it does, that is a bug */
6619 sigchld_handler (signo
)
6622 int old_errno
= errno
;
6624 register struct Lisp_Process
*p
;
6625 extern EMACS_TIME
*input_available_clear_time
;
6627 SIGNAL_THREAD_CHECK (signo
);
6638 #endif /* no WUNTRACED */
6639 /* Keep trying to get a status until we get a definitive result. */
6643 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6645 while (pid
< 0 && errno
== EINTR
);
6649 /* PID == 0 means no processes found, PID == -1 means a real
6650 failure. We have done all our job, so return. */
6657 #endif /* no WNOHANG */
6659 /* Find the process that signaled us, and record its status. */
6661 /* The process can have been deleted by Fdelete_process. */
6662 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6664 Lisp_Object xpid
= XCAR (tail
);
6665 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6666 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6668 XSETCAR (tail
, Qnil
);
6669 goto sigchld_end_of_loop
;
6673 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6675 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6677 proc
= XCDR (XCAR (tail
));
6678 p
= XPROCESS (proc
);
6679 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6684 /* Look for an asynchronous process whose pid hasn't been filled
6687 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6689 proc
= XCDR (XCAR (tail
));
6690 p
= XPROCESS (proc
);
6696 /* Change the status of the process that was found. */
6699 int clear_desc_flag
= 0;
6701 p
->tick
= ++process_tick
;
6703 p
->raw_status_new
= 1;
6705 /* If process has terminated, stop waiting for its output. */
6706 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6708 clear_desc_flag
= 1;
6710 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6711 if (clear_desc_flag
)
6713 FD_CLR (p
->infd
, &input_wait_mask
);
6714 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6717 /* Tell wait_reading_process_output that it needs to wake up and
6719 if (input_available_clear_time
)
6720 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6723 /* There was no asynchronous process found for that pid: we have
6724 a synchronous process. */
6727 synch_process_alive
= 0;
6729 /* Report the status of the synchronous process. */
6731 synch_process_retcode
= WRETCODE (w
);
6732 else if (WIFSIGNALED (w
))
6733 synch_process_termsig
= WTERMSIG (w
);
6735 /* Tell wait_reading_process_output that it needs to wake up and
6737 if (input_available_clear_time
)
6738 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6741 sigchld_end_of_loop
:
6744 /* On some systems, we must return right away.
6745 If any more processes want to signal us, we will
6747 Otherwise (on systems that have WNOHANG), loop around
6748 to use up all the processes that have something to tell us. */
6749 #if (defined WINDOWSNT \
6750 || (defined USG && !defined GNU_LINUX \
6751 && !(defined HPUX && defined WNOHANG)))
6754 #endif /* USG, but not HPUX with WNOHANG */
6757 #endif /* SIGCHLD */
6761 exec_sentinel_unwind (data
)
6764 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6769 exec_sentinel_error_handler (error
)
6772 cmd_error_internal (error
, "error in process sentinel: ");
6774 update_echo_area ();
6775 Fsleep_for (make_number (2), Qnil
);
6780 exec_sentinel (proc
, reason
)
6781 Lisp_Object proc
, reason
;
6783 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6784 register struct Lisp_Process
*p
= XPROCESS (proc
);
6785 int count
= SPECPDL_INDEX ();
6786 int outer_running_asynch_code
= running_asynch_code
;
6787 int waiting
= waiting_for_user_input_p
;
6789 if (inhibit_sentinels
)
6792 /* No need to gcpro these, because all we do with them later
6793 is test them for EQness, and none of them should be a string. */
6794 odeactivate
= Vdeactivate_mark
;
6795 XSETBUFFER (obuffer
, current_buffer
);
6796 okeymap
= current_buffer
->keymap
;
6798 /* There's no good reason to let sentinels change the current
6799 buffer, and many callers of accept-process-output, sit-for, and
6800 friends don't expect current-buffer to be changed from under them. */
6801 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6803 sentinel
= p
->sentinel
;
6804 if (NILP (sentinel
))
6807 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6808 assure that it gets restored no matter how the sentinel exits. */
6810 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6811 /* Inhibit quit so that random quits don't screw up a running filter. */
6812 specbind (Qinhibit_quit
, Qt
);
6813 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6815 /* In case we get recursively called,
6816 and we already saved the match data nonrecursively,
6817 save the same match data in safely recursive fashion. */
6818 if (outer_running_asynch_code
)
6821 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6822 restore_search_regs ();
6823 record_unwind_save_match_data ();
6824 Fset_match_data (tem
, Qt
);
6827 /* For speed, if a search happens within this code,
6828 save the match data in a special nonrecursive fashion. */
6829 running_asynch_code
= 1;
6831 internal_condition_case_1 (read_process_output_call
,
6833 Fcons (proc
, Fcons (reason
, Qnil
))),
6834 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6835 exec_sentinel_error_handler
);
6837 /* If we saved the match data nonrecursively, restore it now. */
6838 restore_search_regs ();
6839 running_asynch_code
= outer_running_asynch_code
;
6841 Vdeactivate_mark
= odeactivate
;
6843 /* Restore waiting_for_user_input_p as it was
6844 when we were called, in case the filter clobbered it. */
6845 waiting_for_user_input_p
= waiting
;
6848 if (! EQ (Fcurrent_buffer (), obuffer
)
6849 || ! EQ (current_buffer
->keymap
, okeymap
))
6851 /* But do it only if the caller is actually going to read events.
6852 Otherwise there's no need to make him wake up, and it could
6853 cause trouble (for example it would make sit_for return). */
6854 if (waiting_for_user_input_p
== -1)
6855 record_asynch_buffer_change ();
6857 unbind_to (count
, Qnil
);
6860 /* Report all recent events of a change in process status
6861 (either run the sentinel or output a message).
6862 This is usually done while Emacs is waiting for keyboard input
6863 but can be done at other times. */
6866 status_notify (deleting_process
)
6867 struct Lisp_Process
*deleting_process
;
6869 register Lisp_Object proc
, buffer
;
6870 Lisp_Object tail
, msg
;
6871 struct gcpro gcpro1
, gcpro2
;
6875 /* We need to gcpro tail; if read_process_output calls a filter
6876 which deletes a process and removes the cons to which tail points
6877 from Vprocess_alist, and then causes a GC, tail is an unprotected
6881 /* Set this now, so that if new processes are created by sentinels
6882 that we run, we get called again to handle their status changes. */
6883 update_tick
= process_tick
;
6885 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6888 register struct Lisp_Process
*p
;
6890 proc
= Fcdr (XCAR (tail
));
6891 p
= XPROCESS (proc
);
6893 if (p
->tick
!= p
->update_tick
)
6895 p
->update_tick
= p
->tick
;
6897 /* If process is still active, read any output that remains. */
6898 while (! EQ (p
->filter
, Qt
)
6899 && ! EQ (p
->status
, Qconnect
)
6900 && ! EQ (p
->status
, Qlisten
)
6901 /* Network or serial process not stopped: */
6902 && ! EQ (p
->command
, Qt
)
6904 && p
!= deleting_process
6905 && read_process_output (proc
, p
->infd
) > 0);
6909 /* Get the text to use for the message. */
6910 if (p
->raw_status_new
)
6912 msg
= status_message (p
);
6914 /* If process is terminated, deactivate it or delete it. */
6916 if (CONSP (p
->status
))
6917 symbol
= XCAR (p
->status
);
6919 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6920 || EQ (symbol
, Qclosed
))
6922 if (delete_exited_processes
)
6923 remove_process (proc
);
6925 deactivate_process (proc
);
6928 /* The actions above may have further incremented p->tick.
6929 So set p->update_tick again
6930 so that an error in the sentinel will not cause
6931 this code to be run again. */
6932 p
->update_tick
= p
->tick
;
6933 /* Now output the message suitably. */
6934 if (!NILP (p
->sentinel
))
6935 exec_sentinel (proc
, msg
);
6936 /* Don't bother with a message in the buffer
6937 when a process becomes runnable. */
6938 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6941 struct buffer
*old
= current_buffer
;
6942 int opoint
, opoint_byte
;
6943 int before
, before_byte
;
6945 /* Avoid error if buffer is deleted
6946 (probably that's why the process is dead, too) */
6947 if (NILP (XBUFFER (buffer
)->name
))
6949 Fset_buffer (buffer
);
6952 opoint_byte
= PT_BYTE
;
6953 /* Insert new output into buffer
6954 at the current end-of-output marker,
6955 thus preserving logical ordering of input and output. */
6956 if (XMARKER (p
->mark
)->buffer
)
6957 Fgoto_char (p
->mark
);
6959 SET_PT_BOTH (ZV
, ZV_BYTE
);
6962 before_byte
= PT_BYTE
;
6964 tem
= current_buffer
->read_only
;
6965 current_buffer
->read_only
= Qnil
;
6966 insert_string ("\nProcess ");
6967 Finsert (1, &p
->name
);
6968 insert_string (" ");
6970 current_buffer
->read_only
= tem
;
6971 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6973 if (opoint
>= before
)
6974 SET_PT_BOTH (opoint
+ (PT
- before
),
6975 opoint_byte
+ (PT_BYTE
- before_byte
));
6977 SET_PT_BOTH (opoint
, opoint_byte
);
6979 set_buffer_internal (old
);
6984 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6989 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6990 Sset_process_coding_system
, 1, 3, 0,
6991 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6992 DECODING will be used to decode subprocess output and ENCODING to
6993 encode subprocess input. */)
6994 (process
, decoding
, encoding
)
6995 register Lisp_Object process
, decoding
, encoding
;
6997 register struct Lisp_Process
*p
;
6999 CHECK_PROCESS (process
);
7000 p
= XPROCESS (process
);
7002 error ("Input file descriptor of %s closed", SDATA (p
->name
));
7004 error ("Output file descriptor of %s closed", SDATA (p
->name
));
7005 Fcheck_coding_system (decoding
);
7006 Fcheck_coding_system (encoding
);
7007 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7008 p
->decode_coding_system
= decoding
;
7009 p
->encode_coding_system
= encoding
;
7010 setup_process_coding_systems (process
);
7015 DEFUN ("process-coding-system",
7016 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7017 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7019 register Lisp_Object process
;
7021 CHECK_PROCESS (process
);
7022 return Fcons (XPROCESS (process
)->decode_coding_system
,
7023 XPROCESS (process
)->encode_coding_system
);
7026 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7027 Sset_process_filter_multibyte
, 2, 2, 0,
7028 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7029 If FLAG is non-nil, the filter is given multibyte strings.
7030 If FLAG is nil, the filter is given unibyte strings. In this case,
7031 all character code conversion except for end-of-line conversion is
7034 Lisp_Object process
, flag
;
7036 register struct Lisp_Process
*p
;
7038 CHECK_PROCESS (process
);
7039 p
= XPROCESS (process
);
7041 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
7042 setup_process_coding_systems (process
);
7047 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7048 Sprocess_filter_multibyte_p
, 1, 1, 0,
7049 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7051 Lisp_Object process
;
7053 register struct Lisp_Process
*p
;
7054 struct coding_system
*coding
;
7056 CHECK_PROCESS (process
);
7057 p
= XPROCESS (process
);
7058 coding
= proc_decode_coding_system
[p
->infd
];
7059 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7064 /* Add DESC to the set of keyboard input descriptors. */
7067 add_keyboard_wait_descriptor (desc
)
7070 FD_SET (desc
, &input_wait_mask
);
7071 FD_SET (desc
, &non_process_wait_mask
);
7072 if (desc
> max_keyboard_desc
)
7073 max_keyboard_desc
= desc
;
7076 static int add_gpm_wait_descriptor_called_flag
;
7079 add_gpm_wait_descriptor (desc
)
7082 if (! add_gpm_wait_descriptor_called_flag
)
7083 FD_CLR (0, &input_wait_mask
);
7084 add_gpm_wait_descriptor_called_flag
= 1;
7085 FD_SET (desc
, &input_wait_mask
);
7086 FD_SET (desc
, &gpm_wait_mask
);
7087 if (desc
> max_gpm_desc
)
7088 max_gpm_desc
= desc
;
7091 /* From now on, do not expect DESC to give keyboard input. */
7094 delete_keyboard_wait_descriptor (desc
)
7098 int lim
= max_keyboard_desc
;
7100 FD_CLR (desc
, &input_wait_mask
);
7101 FD_CLR (desc
, &non_process_wait_mask
);
7103 if (desc
== max_keyboard_desc
)
7104 for (fd
= 0; fd
< lim
; fd
++)
7105 if (FD_ISSET (fd
, &input_wait_mask
)
7106 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7107 && !FD_ISSET (fd
, &gpm_wait_mask
))
7108 max_keyboard_desc
= fd
;
7112 delete_gpm_wait_descriptor (desc
)
7116 int lim
= max_gpm_desc
;
7118 FD_CLR (desc
, &input_wait_mask
);
7119 FD_CLR (desc
, &non_process_wait_mask
);
7121 if (desc
== max_gpm_desc
)
7122 for (fd
= 0; fd
< lim
; fd
++)
7123 if (FD_ISSET (fd
, &input_wait_mask
)
7124 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7125 && !FD_ISSET (fd
, &non_process_wait_mask
))
7129 /* Return nonzero if *MASK has a bit set
7130 that corresponds to one of the keyboard input descriptors. */
7133 keyboard_bit_set (mask
)
7138 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7139 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7140 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7146 /* Enumeration of and access to system processes a-la ps(1). */
7148 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7150 doc
: /* Return a list of numerical process IDs of all running processes.
7151 If this functionality is unsupported, return nil.
7153 See `process-attributes' for getting attributes of a process given its ID. */)
7156 return list_system_processes ();
7159 DEFUN ("process-attributes", Fprocess_attributes
,
7160 Sprocess_attributes
, 1, 1, 0,
7161 doc
: /* Return attributes of the process given by its PID, a number.
7163 Value is an alist where each element is a cons cell of the form
7167 If this functionality is unsupported, the value is nil.
7169 See `list-system-processes' for getting a list of all process IDs.
7171 The KEYs of the attributes that this function may return are listed
7172 below, together with the type of the associated VALUE (in parentheses).
7173 Not all platforms support all of these attributes; unsupported
7174 attributes will not appear in the returned alist.
7175 Unless explicitly indicated otherwise, numbers can have either
7176 integer or floating point values.
7178 euid -- Effective user User ID of the process (number)
7179 user -- User name corresponding to euid (string)
7180 egid -- Effective user Group ID of the process (number)
7181 group -- Group name corresponding to egid (string)
7182 comm -- Command name (executable name only) (string)
7183 state -- Process state code, such as "S", "R", or "T" (string)
7184 ppid -- Parent process ID (number)
7185 pgrp -- Process group ID (number)
7186 sess -- Session ID, i.e. process ID of session leader (number)
7187 ttname -- Controlling tty name (string)
7188 tpgid -- ID of foreground process group on the process's tty (number)
7189 minflt -- number of minor page faults (number)
7190 majflt -- number of major page faults (number)
7191 cminflt -- cumulative number of minor page faults (number)
7192 cmajflt -- cumulative number of major page faults (number)
7193 utime -- user time used by the process, in the (HIGH LOW USEC) format
7194 stime -- system time used by the process, in the (HIGH LOW USEC) format
7195 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7196 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7197 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7198 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7199 pri -- priority of the process (number)
7200 nice -- nice value of the process (number)
7201 thcount -- process thread count (number)
7202 start -- time the process started, in the (HIGH LOW USEC) format
7203 vsize -- virtual memory size of the process in KB's (number)
7204 rss -- resident set size of the process in KB's (number)
7205 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7206 pcpu -- percents of CPU time used by the process (floating-point number)
7207 pmem -- percents of total physical memory used by process's resident set
7208 (floating-point number)
7209 args -- command line which invoked the process (string). */)
7214 return system_process_attributes (pid
);
7222 inhibit_sentinels
= 0;
7226 if (! noninteractive
|| initialized
)
7228 signal (SIGCHLD
, sigchld_handler
);
7231 FD_ZERO (&input_wait_mask
);
7232 FD_ZERO (&non_keyboard_wait_mask
);
7233 FD_ZERO (&non_process_wait_mask
);
7234 max_process_desc
= 0;
7236 #ifdef NON_BLOCKING_CONNECT
7237 FD_ZERO (&connect_wait_mask
);
7238 num_pending_connects
= 0;
7241 #ifdef ADAPTIVE_READ_BUFFERING
7242 process_output_delay_count
= 0;
7243 process_output_skip
= 0;
7246 /* Don't do this, it caused infinite select loops. The display
7247 method should call add_keyboard_wait_descriptor on stdin if it
7250 FD_SET (0, &input_wait_mask
);
7253 Vprocess_alist
= Qnil
;
7255 deleted_pid_list
= Qnil
;
7257 for (i
= 0; i
< MAXDESC
; i
++)
7259 chan_process
[i
] = Qnil
;
7260 proc_buffered_char
[i
] = -1;
7262 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7263 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7264 #ifdef DATAGRAM_SOCKETS
7265 bzero (datagram_address
, sizeof datagram_address
);
7270 Lisp_Object subfeatures
= Qnil
;
7271 const struct socket_options
*sopt
;
7273 #define ADD_SUBFEATURE(key, val) \
7274 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7276 #ifdef NON_BLOCKING_CONNECT
7277 ADD_SUBFEATURE (QCnowait
, Qt
);
7279 #ifdef DATAGRAM_SOCKETS
7280 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7282 #ifdef HAVE_SEQPACKET
7283 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7285 #ifdef HAVE_LOCAL_SOCKETS
7286 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7288 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7290 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7292 #ifdef HAVE_GETSOCKNAME
7293 ADD_SUBFEATURE (QCservice
, Qt
);
7295 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7296 ADD_SUBFEATURE (QCserver
, Qt
);
7299 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7300 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7302 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7304 #endif /* HAVE_SOCKETS */
7306 #if defined (DARWIN_OS)
7307 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7308 processes. As such, we only change the default value. */
7311 char *release
= get_operating_system_release();
7312 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7313 && release
[1] == '.')) {
7314 Vprocess_connection_type
= Qnil
;
7323 Qprocessp
= intern_c_string ("processp");
7324 staticpro (&Qprocessp
);
7325 Qrun
= intern_c_string ("run");
7327 Qstop
= intern_c_string ("stop");
7329 Qsignal
= intern_c_string ("signal");
7330 staticpro (&Qsignal
);
7332 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7335 Qexit = intern_c_string ("exit");
7336 staticpro (&Qexit); */
7338 Qopen
= intern_c_string ("open");
7340 Qclosed
= intern_c_string ("closed");
7341 staticpro (&Qclosed
);
7342 Qconnect
= intern_c_string ("connect");
7343 staticpro (&Qconnect
);
7344 Qfailed
= intern_c_string ("failed");
7345 staticpro (&Qfailed
);
7346 Qlisten
= intern_c_string ("listen");
7347 staticpro (&Qlisten
);
7348 Qlocal
= intern_c_string ("local");
7349 staticpro (&Qlocal
);
7350 Qipv4
= intern_c_string ("ipv4");
7353 Qipv6
= intern_c_string ("ipv6");
7356 Qdatagram
= intern_c_string ("datagram");
7357 staticpro (&Qdatagram
);
7358 Qseqpacket
= intern_c_string ("seqpacket");
7359 staticpro (&Qseqpacket
);
7361 QCport
= intern_c_string (":port");
7362 staticpro (&QCport
);
7363 QCspeed
= intern_c_string (":speed");
7364 staticpro (&QCspeed
);
7365 QCprocess
= intern_c_string (":process");
7366 staticpro (&QCprocess
);
7368 QCbytesize
= intern_c_string (":bytesize");
7369 staticpro (&QCbytesize
);
7370 QCstopbits
= intern_c_string (":stopbits");
7371 staticpro (&QCstopbits
);
7372 QCparity
= intern_c_string (":parity");
7373 staticpro (&QCparity
);
7374 Qodd
= intern_c_string ("odd");
7376 Qeven
= intern_c_string ("even");
7378 QCflowcontrol
= intern_c_string (":flowcontrol");
7379 staticpro (&QCflowcontrol
);
7380 Qhw
= intern_c_string ("hw");
7382 Qsw
= intern_c_string ("sw");
7384 QCsummary
= intern_c_string (":summary");
7385 staticpro (&QCsummary
);
7387 Qreal
= intern_c_string ("real");
7389 Qnetwork
= intern_c_string ("network");
7390 staticpro (&Qnetwork
);
7391 Qserial
= intern_c_string ("serial");
7392 staticpro (&Qserial
);
7394 QCname
= intern_c_string (":name");
7395 staticpro (&QCname
);
7396 QCbuffer
= intern_c_string (":buffer");
7397 staticpro (&QCbuffer
);
7398 QChost
= intern_c_string (":host");
7399 staticpro (&QChost
);
7400 QCservice
= intern_c_string (":service");
7401 staticpro (&QCservice
);
7402 QCtype
= intern_c_string (":type");
7403 staticpro (&QCtype
);
7404 QClocal
= intern_c_string (":local");
7405 staticpro (&QClocal
);
7406 QCremote
= intern_c_string (":remote");
7407 staticpro (&QCremote
);
7408 QCcoding
= intern_c_string (":coding");
7409 staticpro (&QCcoding
);
7410 QCserver
= intern_c_string (":server");
7411 staticpro (&QCserver
);
7412 QCnowait
= intern_c_string (":nowait");
7413 staticpro (&QCnowait
);
7414 QCsentinel
= intern_c_string (":sentinel");
7415 staticpro (&QCsentinel
);
7416 QClog
= intern_c_string (":log");
7418 QCnoquery
= intern_c_string (":noquery");
7419 staticpro (&QCnoquery
);
7420 QCstop
= intern_c_string (":stop");
7421 staticpro (&QCstop
);
7422 QCoptions
= intern_c_string (":options");
7423 staticpro (&QCoptions
);
7424 QCplist
= intern_c_string (":plist");
7425 staticpro (&QCplist
);
7427 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7428 staticpro (&Qlast_nonmenu_event
);
7430 staticpro (&Vprocess_alist
);
7432 staticpro (&deleted_pid_list
);
7435 Qeuid
= intern_c_string ("euid");
7437 Qegid
= intern_c_string ("egid");
7439 Quser
= intern_c_string ("user");
7441 Qgroup
= intern_c_string ("group");
7442 staticpro (&Qgroup
);
7443 Qcomm
= intern_c_string ("comm");
7445 Qstate
= intern_c_string ("state");
7446 staticpro (&Qstate
);
7447 Qppid
= intern_c_string ("ppid");
7449 Qpgrp
= intern_c_string ("pgrp");
7451 Qsess
= intern_c_string ("sess");
7453 Qttname
= intern_c_string ("ttname");
7454 staticpro (&Qttname
);
7455 Qtpgid
= intern_c_string ("tpgid");
7456 staticpro (&Qtpgid
);
7457 Qminflt
= intern_c_string ("minflt");
7458 staticpro (&Qminflt
);
7459 Qmajflt
= intern_c_string ("majflt");
7460 staticpro (&Qmajflt
);
7461 Qcminflt
= intern_c_string ("cminflt");
7462 staticpro (&Qcminflt
);
7463 Qcmajflt
= intern_c_string ("cmajflt");
7464 staticpro (&Qcmajflt
);
7465 Qutime
= intern_c_string ("utime");
7466 staticpro (&Qutime
);
7467 Qstime
= intern_c_string ("stime");
7468 staticpro (&Qstime
);
7469 Qtime
= intern_c_string ("time");
7471 Qcutime
= intern_c_string ("cutime");
7472 staticpro (&Qcutime
);
7473 Qcstime
= intern_c_string ("cstime");
7474 staticpro (&Qcstime
);
7475 Qctime
= intern_c_string ("ctime");
7476 staticpro (&Qctime
);
7477 Qpri
= intern_c_string ("pri");
7479 Qnice
= intern_c_string ("nice");
7481 Qthcount
= intern_c_string ("thcount");
7482 staticpro (&Qthcount
);
7483 Qstart
= intern_c_string ("start");
7484 staticpro (&Qstart
);
7485 Qvsize
= intern_c_string ("vsize");
7486 staticpro (&Qvsize
);
7487 Qrss
= intern_c_string ("rss");
7489 Qetime
= intern_c_string ("etime");
7490 staticpro (&Qetime
);
7491 Qpcpu
= intern_c_string ("pcpu");
7493 Qpmem
= intern_c_string ("pmem");
7495 Qargs
= intern_c_string ("args");
7498 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7499 doc
: /* *Non-nil means delete processes immediately when they exit.
7500 A value of nil means don't delete them until `list-processes' is run. */);
7502 delete_exited_processes
= 1;
7504 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7505 doc
: /* Control type of device used to communicate with subprocesses.
7506 Values are nil to use a pipe, or t or `pty' to use a pty.
7507 The value has no effect if the system has no ptys or if all ptys are busy:
7508 then a pipe is used in any case.
7509 The value takes effect when `start-process' is called. */);
7510 Vprocess_connection_type
= Qt
;
7512 #ifdef ADAPTIVE_READ_BUFFERING
7513 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7514 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7515 On some systems, when Emacs reads the output from a subprocess, the output data
7516 is read in very small blocks, potentially resulting in very poor performance.
7517 This behavior can be remedied to some extent by setting this variable to a
7518 non-nil value, as it will automatically delay reading from such processes, to
7519 allow them to produce more output before Emacs tries to read it.
7520 If the value is t, the delay is reset after each write to the process; any other
7521 non-nil value means that the delay is not reset on write.
7522 The variable takes effect when `start-process' is called. */);
7523 Vprocess_adaptive_read_buffering
= Qt
;
7526 defsubr (&Sprocessp
);
7527 defsubr (&Sget_process
);
7528 defsubr (&Sget_buffer_process
);
7529 defsubr (&Sdelete_process
);
7530 defsubr (&Sprocess_status
);
7531 defsubr (&Sprocess_exit_status
);
7532 defsubr (&Sprocess_id
);
7533 defsubr (&Sprocess_name
);
7534 defsubr (&Sprocess_tty_name
);
7535 defsubr (&Sprocess_command
);
7536 defsubr (&Sset_process_buffer
);
7537 defsubr (&Sprocess_buffer
);
7538 defsubr (&Sprocess_mark
);
7539 defsubr (&Sset_process_filter
);
7540 defsubr (&Sprocess_filter
);
7541 defsubr (&Sset_process_sentinel
);
7542 defsubr (&Sprocess_sentinel
);
7543 defsubr (&Sset_process_window_size
);
7544 defsubr (&Sset_process_inherit_coding_system_flag
);
7545 defsubr (&Sprocess_inherit_coding_system_flag
);
7546 defsubr (&Sset_process_query_on_exit_flag
);
7547 defsubr (&Sprocess_query_on_exit_flag
);
7548 defsubr (&Sprocess_contact
);
7549 defsubr (&Sprocess_plist
);
7550 defsubr (&Sset_process_plist
);
7551 defsubr (&Slist_processes
);
7552 defsubr (&Sprocess_list
);
7553 defsubr (&Sstart_process
);
7555 defsubr (&Sserial_process_configure
);
7556 defsubr (&Smake_serial_process
);
7557 #endif /* HAVE_SERIAL */
7559 defsubr (&Sset_network_process_option
);
7560 defsubr (&Smake_network_process
);
7561 defsubr (&Sformat_network_address
);
7562 #endif /* HAVE_SOCKETS */
7563 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7565 defsubr (&Snetwork_interface_list
);
7567 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7568 defsubr (&Snetwork_interface_info
);
7570 #endif /* HAVE_SOCKETS ... */
7571 #ifdef DATAGRAM_SOCKETS
7572 defsubr (&Sprocess_datagram_address
);
7573 defsubr (&Sset_process_datagram_address
);
7575 defsubr (&Saccept_process_output
);
7576 defsubr (&Sprocess_send_region
);
7577 defsubr (&Sprocess_send_string
);
7578 defsubr (&Sinterrupt_process
);
7579 defsubr (&Skill_process
);
7580 defsubr (&Squit_process
);
7581 defsubr (&Sstop_process
);
7582 defsubr (&Scontinue_process
);
7583 defsubr (&Sprocess_running_child_p
);
7584 defsubr (&Sprocess_send_eof
);
7585 defsubr (&Ssignal_process
);
7586 defsubr (&Swaiting_for_user_input_p
);
7587 defsubr (&Sprocess_type
);
7588 defsubr (&Sset_process_coding_system
);
7589 defsubr (&Sprocess_coding_system
);
7590 defsubr (&Sset_process_filter_multibyte
);
7591 defsubr (&Sprocess_filter_multibyte_p
);
7592 defsubr (&Slist_system_processes
);
7593 defsubr (&Sprocess_attributes
);
7597 #else /* not subprocesses */
7599 #include <sys/types.h>
7601 #include <sys/stat.h>
7605 #ifdef HAVE_UNISTD_H
7610 #include "systime.h"
7611 #include "character.h"
7613 #include "termopts.h"
7614 #include "sysselect.h"
7616 extern int frame_garbaged
;
7618 extern EMACS_TIME
timer_check ();
7619 extern int timers_run
;
7621 Lisp_Object QCtype
, QCname
;
7623 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
7624 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
7625 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
7626 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
7628 /* As described above, except assuming that there are no subprocesses:
7630 Wait for timeout to elapse and/or keyboard input to be available.
7633 timeout in seconds, or
7634 zero for no limit, or
7635 -1 means gobble data immediately available but don't wait for any.
7637 read_kbd is a Lisp_Object:
7638 0 to ignore keyboard input, or
7639 1 to return when input is available, or
7640 -1 means caller will actually read the input, so don't throw to
7643 see full version for other parameters. We know that wait_proc will
7644 always be NULL, since `subprocesses' isn't defined.
7646 do_display != 0 means redisplay should be done to show subprocess
7647 output that arrives.
7649 Return true if we received input from any process. */
7652 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7653 wait_for_cell
, wait_proc
, just_wait_proc
)
7654 int time_limit
, microsecs
, read_kbd
, do_display
;
7655 Lisp_Object wait_for_cell
;
7656 struct Lisp_Process
*wait_proc
;
7660 EMACS_TIME end_time
, timeout
;
7661 SELECT_TYPE waitchannels
;
7664 /* What does time_limit really mean? */
7665 if (time_limit
|| microsecs
)
7667 EMACS_GET_TIME (end_time
);
7668 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7669 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7672 /* Turn off periodic alarms (in case they are in use)
7673 and then turn off any other atimers,
7674 because the select emulator uses alarms. */
7676 turn_on_atimers (0);
7680 int timeout_reduced_for_timers
= 0;
7682 /* If calling from keyboard input, do not quit
7683 since we want to return C-g as an input character.
7684 Otherwise, do pending quit if requested. */
7688 /* Exit now if the cell we're waiting for became non-nil. */
7689 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7692 /* Compute time from now till when time limit is up */
7693 /* Exit if already run out */
7694 if (time_limit
== -1)
7696 /* -1 specified for timeout means
7697 gobble output available now
7698 but don't wait at all. */
7700 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7702 else if (time_limit
|| microsecs
)
7704 EMACS_GET_TIME (timeout
);
7705 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7706 if (EMACS_TIME_NEG_P (timeout
))
7711 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7714 /* If our caller will not immediately handle keyboard events,
7715 run timer events directly.
7716 (Callers that will immediately read keyboard events
7717 call timer_delay on their own.) */
7718 if (NILP (wait_for_cell
))
7720 EMACS_TIME timer_delay
;
7724 int old_timers_run
= timers_run
;
7725 timer_delay
= timer_check (1);
7726 if (timers_run
!= old_timers_run
&& do_display
)
7727 /* We must retry, since a timer may have requeued itself
7728 and that could alter the time delay. */
7729 redisplay_preserve_echo_area (14);
7733 while (!detect_input_pending ());
7735 /* If there is unread keyboard input, also return. */
7737 && requeued_events_pending_p ())
7740 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7742 EMACS_TIME difference
;
7743 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7744 if (EMACS_TIME_NEG_P (difference
))
7746 timeout
= timer_delay
;
7747 timeout_reduced_for_timers
= 1;
7752 /* Cause C-g and alarm signals to take immediate action,
7753 and cause input available signals to zero out timeout. */
7755 set_waiting_for_input (&timeout
);
7757 /* Wait till there is something to do. */
7759 if (! read_kbd
&& NILP (wait_for_cell
))
7760 FD_ZERO (&waitchannels
);
7762 FD_SET (0, &waitchannels
);
7764 /* If a frame has been newly mapped and needs updating,
7765 reprocess its display stuff. */
7766 if (frame_garbaged
&& do_display
)
7768 clear_waiting_for_input ();
7769 redisplay_preserve_echo_area (15);
7771 set_waiting_for_input (&timeout
);
7774 if (read_kbd
&& detect_input_pending ())
7777 FD_ZERO (&waitchannels
);
7780 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7785 /* Make C-g and alarm signals set flags again */
7786 clear_waiting_for_input ();
7788 /* If we woke up due to SIGWINCH, actually change size now. */
7789 do_pending_window_change (0);
7791 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7792 /* We waited the full specified time, so return now. */
7797 /* If the system call was interrupted, then go around the
7799 if (xerrno
== EINTR
)
7800 FD_ZERO (&waitchannels
);
7802 error ("select error: %s", emacs_strerror (xerrno
));
7805 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7806 /* System sometimes fails to deliver SIGIO. */
7807 kill (getpid (), SIGIO
);
7810 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7811 kill (getpid (), SIGIO
);
7814 /* Check for keyboard input */
7817 && detect_input_pending_run_timers (do_display
))
7819 swallow_events (do_display
);
7820 if (detect_input_pending_run_timers (do_display
))
7824 /* If there is unread keyboard input, also return. */
7826 && requeued_events_pending_p ())
7829 /* If wait_for_cell. check for keyboard input
7830 but don't run any timers.
7831 ??? (It seems wrong to me to check for keyboard
7832 input at all when wait_for_cell, but the code
7833 has been this way since July 1994.
7834 Try changing this after version 19.31.) */
7835 if (! NILP (wait_for_cell
)
7836 && detect_input_pending ())
7838 swallow_events (do_display
);
7839 if (detect_input_pending ())
7843 /* Exit now if the cell we're waiting for became non-nil. */
7844 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7854 /* Don't confuse make-docfile by having two doc strings for this function.
7855 make-docfile does not pay attention to #if, for good reason! */
7856 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7859 register Lisp_Object name
;
7864 /* Don't confuse make-docfile by having two doc strings for this function.
7865 make-docfile does not pay attention to #if, for good reason! */
7866 DEFUN ("process-inherit-coding-system-flag",
7867 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7871 register Lisp_Object process
;
7873 /* Ignore the argument and return the value of
7874 inherit-process-coding-system. */
7875 return inherit_process_coding_system
? Qt
: Qnil
;
7878 /* Kill all processes associated with `buffer'.
7879 If `buffer' is nil, kill all processes.
7880 Since we have no subprocesses, this does nothing. */
7883 kill_buffer_processes (buffer
)
7888 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7890 doc
: /* Return a list of numerical process IDs of all running processes.
7891 If this functionality is unsupported, return nil.
7893 See `process-attributes' for getting attributes of a process given its ID. */)
7896 return list_system_processes ();
7899 DEFUN ("process-attributes", Fprocess_attributes
,
7900 Sprocess_attributes
, 1, 1, 0,
7901 doc
: /* Return attributes of the process given by its PID, a number.
7903 Value is an alist where each element is a cons cell of the form
7907 If this functionality is unsupported, the value is nil.
7909 See `list-system-processes' for getting a list of all process IDs.
7911 The KEYs of the attributes that this function may return are listed
7912 below, together with the type of the associated VALUE (in parentheses).
7913 Not all platforms support all of these attributes; unsupported
7914 attributes will not appear in the returned alist.
7915 Unless explicitly indicated otherwise, numbers can have either
7916 integer or floating point values.
7918 euid -- Effective user User ID of the process (number)
7919 user -- User name corresponding to euid (string)
7920 egid -- Effective user Group ID of the process (number)
7921 group -- Group name corresponding to egid (string)
7922 comm -- Command name (executable name only) (string)
7923 state -- Process state code, such as "S", "R", or "T" (string)
7924 ppid -- Parent process ID (number)
7925 pgrp -- Process group ID (number)
7926 sess -- Session ID, i.e. process ID of session leader (number)
7927 ttname -- Controlling tty name (string)
7928 tpgid -- ID of foreground process group on the process's tty (number)
7929 minflt -- number of minor page faults (number)
7930 majflt -- number of major page faults (number)
7931 cminflt -- cumulative number of minor page faults (number)
7932 cmajflt -- cumulative number of major page faults (number)
7933 utime -- user time used by the process, in the (HIGH LOW USEC) format
7934 stime -- system time used by the process, in the (HIGH LOW USEC) format
7935 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7936 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7937 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7938 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7939 pri -- priority of the process (number)
7940 nice -- nice value of the process (number)
7941 thcount -- process thread count (number)
7942 start -- time the process started, in the (HIGH LOW USEC) format
7943 vsize -- virtual memory size of the process in KB's (number)
7944 rss -- resident set size of the process in KB's (number)
7945 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7946 pcpu -- percents of CPU time used by the process (floating-point number)
7947 pmem -- percents of total physical memory used by process's resident set
7948 (floating-point number)
7949 args -- command line which invoked the process (string). */)
7954 return system_process_attributes (pid
);
7965 QCtype
= intern_c_string (":type");
7966 staticpro (&QCtype
);
7967 QCname
= intern_c_string (":name");
7968 staticpro (&QCname
);
7969 QCtype
= intern_c_string (":type");
7970 staticpro (&QCtype
);
7971 QCname
= intern_c_string (":name");
7972 staticpro (&QCname
);
7973 Qeuid
= intern_c_string ("euid");
7975 Qegid
= intern_c_string ("egid");
7977 Quser
= intern_c_string ("user");
7979 Qgroup
= intern_c_string ("group");
7980 staticpro (&Qgroup
);
7981 Qcomm
= intern_c_string ("comm");
7983 Qstate
= intern_c_string ("state");
7984 staticpro (&Qstate
);
7985 Qppid
= intern_c_string ("ppid");
7987 Qpgrp
= intern_c_string ("pgrp");
7989 Qsess
= intern_c_string ("sess");
7991 Qttname
= intern_c_string ("ttname");
7992 staticpro (&Qttname
);
7993 Qtpgid
= intern_c_string ("tpgid");
7994 staticpro (&Qtpgid
);
7995 Qminflt
= intern_c_string ("minflt");
7996 staticpro (&Qminflt
);
7997 Qmajflt
= intern_c_string ("majflt");
7998 staticpro (&Qmajflt
);
7999 Qcminflt
= intern_c_string ("cminflt");
8000 staticpro (&Qcminflt
);
8001 Qcmajflt
= intern_c_string ("cmajflt");
8002 staticpro (&Qcmajflt
);
8003 Qutime
= intern_c_string ("utime");
8004 staticpro (&Qutime
);
8005 Qstime
= intern_c_string ("stime");
8006 staticpro (&Qstime
);
8007 Qtime
= intern_c_string ("time");
8009 Qcutime
= intern_c_string ("cutime");
8010 staticpro (&Qcutime
);
8011 Qcstime
= intern_c_string ("cstime");
8012 staticpro (&Qcstime
);
8013 Qctime
= intern_c_string ("ctime");
8014 staticpro (&Qctime
);
8015 Qpri
= intern_c_string ("pri");
8017 Qnice
= intern_c_string ("nice");
8019 Qthcount
= intern_c_string ("thcount");
8020 staticpro (&Qthcount
);
8021 Qstart
= intern_c_string ("start");
8022 staticpro (&Qstart
);
8023 Qvsize
= intern_c_string ("vsize");
8024 staticpro (&Qvsize
);
8025 Qrss
= intern_c_string ("rss");
8027 Qetime
= intern_c_string ("etime");
8028 staticpro (&Qetime
);
8029 Qpcpu
= intern_c_string ("pcpu");
8031 Qpmem
= intern_c_string ("pmem");
8033 Qargs
= intern_c_string ("args");
8036 defsubr (&Sget_buffer_process
);
8037 defsubr (&Sprocess_inherit_coding_system_flag
);
8038 defsubr (&Slist_system_processes
);
8039 defsubr (&Sprocess_attributes
);
8043 #endif /* not subprocesses */
8045 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
8046 (do not change this comment) */