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(BSD_SYSTEM)
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 /* BSD_SYSTEM */
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
);
206 /* t means use pty, nil means use a pipe,
207 maybe other values to come. */
208 static Lisp_Object Vprocess_connection_type
;
210 /* These next two vars are non-static since sysdep.c uses them in the
211 emulation of `select'. */
212 /* Number of events of change of status of a process. */
214 /* Number of events for which the user or sentinel has been notified. */
217 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
219 #ifdef BROKEN_NON_BLOCKING_CONNECT
220 #undef NON_BLOCKING_CONNECT
222 #ifndef NON_BLOCKING_CONNECT
225 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
226 #if defined (O_NONBLOCK) || defined (O_NDELAY)
227 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
228 #define NON_BLOCKING_CONNECT
229 #endif /* EWOULDBLOCK || EINPROGRESS */
230 #endif /* O_NONBLOCK || O_NDELAY */
231 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
232 #endif /* HAVE_SELECT */
233 #endif /* HAVE_SOCKETS */
234 #endif /* NON_BLOCKING_CONNECT */
235 #endif /* BROKEN_NON_BLOCKING_CONNECT */
237 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
238 this system. We need to read full packets, so we need a
239 "non-destructive" select. So we require either native select,
240 or emulation of select using FIONREAD. */
242 #ifdef BROKEN_DATAGRAM_SOCKETS
243 #undef DATAGRAM_SOCKETS
245 #ifndef DATAGRAM_SOCKETS
247 #if defined (HAVE_SELECT) || defined (FIONREAD)
248 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
249 #define DATAGRAM_SOCKETS
250 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
251 #endif /* HAVE_SELECT || FIONREAD */
252 #endif /* HAVE_SOCKETS */
253 #endif /* DATAGRAM_SOCKETS */
254 #endif /* BROKEN_DATAGRAM_SOCKETS */
256 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
257 # define HAVE_SEQPACKET
260 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
261 #ifdef EMACS_HAS_USECS
262 #define ADAPTIVE_READ_BUFFERING
266 #ifdef ADAPTIVE_READ_BUFFERING
267 #define READ_OUTPUT_DELAY_INCREMENT 10000
268 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
269 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
271 /* Number of processes which have a non-zero read_output_delay,
272 and therefore might be delayed for adaptive read buffering. */
274 static int process_output_delay_count
;
276 /* Non-zero if any process has non-nil read_output_skip. */
278 static int process_output_skip
;
280 /* Non-nil means to delay reading process output to improve buffering.
281 A value of t means that delay is reset after each send, any other
282 non-nil value does not reset the delay. A value of nil disables
283 adaptive read buffering completely. */
284 static Lisp_Object Vprocess_adaptive_read_buffering
;
286 #define process_output_delay_count 0
290 #include "sysselect.h"
292 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
293 static void deactivate_process
P_ ((Lisp_Object
));
294 static void status_notify
P_ ((struct Lisp_Process
*));
295 static int read_process_output
P_ ((Lisp_Object
, int));
296 static void create_pty
P_ ((Lisp_Object
));
298 /* If we support a window system, turn on the code to poll periodically
299 to detect C-g. It isn't actually used when doing interrupt input. */
300 #ifdef HAVE_WINDOW_SYSTEM
301 #define POLL_FOR_INPUT
304 static Lisp_Object
get_process ();
305 static void exec_sentinel ();
307 extern int timers_run
;
309 /* Mask of bits indicating the descriptors that we wait for input on. */
311 static SELECT_TYPE input_wait_mask
;
313 /* Mask that excludes keyboard input descriptor(s). */
315 static SELECT_TYPE non_keyboard_wait_mask
;
317 /* Mask that excludes process input descriptor(s). */
319 static SELECT_TYPE non_process_wait_mask
;
321 /* Mask for the gpm mouse input descriptor. */
323 static SELECT_TYPE gpm_wait_mask
;
325 #ifdef NON_BLOCKING_CONNECT
326 /* Mask of bits indicating the descriptors that we wait for connect to
327 complete on. Once they complete, they are removed from this mask
328 and added to the input_wait_mask and non_keyboard_wait_mask. */
330 static SELECT_TYPE connect_wait_mask
;
332 /* Number of bits set in connect_wait_mask. */
333 static int num_pending_connects
;
335 #define IF_NON_BLOCKING_CONNECT(s) s
337 #define IF_NON_BLOCKING_CONNECT(s)
340 /* The largest descriptor currently in use for a process object. */
341 static int max_process_desc
;
343 /* The largest descriptor currently in use for keyboard input. */
344 static int max_keyboard_desc
;
346 /* The largest descriptor currently in use for gpm mouse input. */
347 static int max_gpm_desc
;
349 /* Nonzero means delete a process right away if it exits. */
350 static int delete_exited_processes
;
352 /* Indexed by descriptor, gives the process (if any) for that descriptor */
353 Lisp_Object chan_process
[MAXDESC
];
355 /* Alist of elements (NAME . PROCESS) */
356 Lisp_Object Vprocess_alist
;
358 /* Buffered-ahead input char from process, indexed by channel.
359 -1 means empty (no char is buffered).
360 Used on sys V where the only way to tell if there is any
361 output from the process is to read at least one char.
362 Always -1 on systems that support FIONREAD. */
364 /* Don't make static; need to access externally. */
365 int proc_buffered_char
[MAXDESC
];
367 /* Table of `struct coding-system' for each process. */
368 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
369 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
371 #ifdef DATAGRAM_SOCKETS
372 /* Table of `partner address' for datagram sockets. */
373 struct sockaddr_and_len
{
376 } datagram_address
[MAXDESC
];
377 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
378 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
380 #define DATAGRAM_CHAN_P(chan) (0)
381 #define DATAGRAM_CONN_P(proc) (0)
384 /* Maximum number of bytes to send to a pty without an eof. */
385 static int pty_max_bytes
;
387 /* Nonzero means don't run process sentinels. This is used
389 int inhibit_sentinels
;
395 /* The file name of the pty opened by allocate_pty. */
397 static char pty_name
[24];
400 /* Compute the Lisp form of the process status, p->status, from
401 the numeric status that was returned by `wait'. */
403 static Lisp_Object
status_convert (int);
407 struct Lisp_Process
*p
;
409 eassert (p
->raw_status_new
);
410 p
->status
= status_convert (p
->raw_status
);
411 p
->raw_status_new
= 0;
414 /* Convert a process status word in Unix format to
415 the list that we use internally. */
418 status_convert (int w
)
421 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
422 else if (WIFEXITED (w
))
423 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
424 WCOREDUMP (w
) ? Qt
: Qnil
));
425 else if (WIFSIGNALED (w
))
426 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
427 WCOREDUMP (w
) ? Qt
: Qnil
));
432 /* Given a status-list, extract the three pieces of information
433 and store them individually through the three pointers. */
436 decode_status (l
, symbol
, code
, coredump
)
454 *code
= XFASTINT (XCAR (tem
));
456 *coredump
= !NILP (tem
);
460 /* Return a string describing a process status list. */
464 struct Lisp_Process
*p
;
466 Lisp_Object status
= p
->status
;
469 Lisp_Object string
, string2
;
471 decode_status (status
, &symbol
, &code
, &coredump
);
473 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
476 synchronize_system_messages_locale ();
477 signame
= strsignal (code
);
479 string
= build_string ("unknown");
484 string
= make_unibyte_string (signame
, strlen (signame
));
485 if (! NILP (Vlocale_coding_system
))
486 string
= (code_convert_string_norecord
487 (string
, Vlocale_coding_system
, 0));
488 c1
= STRING_CHAR ((char *) SDATA (string
));
491 Faset (string
, make_number (0), make_number (c2
));
493 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
494 return concat2 (string
, string2
);
496 else if (EQ (symbol
, Qexit
))
499 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
501 return build_string ("finished\n");
502 string
= Fnumber_to_string (make_number (code
));
503 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
504 return concat3 (build_string ("exited abnormally with code "),
507 else if (EQ (symbol
, Qfailed
))
509 string
= Fnumber_to_string (make_number (code
));
510 string2
= build_string ("\n");
511 return concat3 (build_string ("failed with code "),
515 return Fcopy_sequence (Fsymbol_name (symbol
));
520 /* Open an available pty, returning a file descriptor.
521 Return -1 on failure.
522 The file name of the terminal corresponding to the pty
523 is left in the variable pty_name. */
534 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
535 for (i
= 0; i
< 16; i
++)
538 struct stat stb
; /* Used in some PTY_OPEN. */
539 #ifdef PTY_NAME_SPRINTF
542 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
543 #endif /* no PTY_NAME_SPRINTF */
547 #else /* no PTY_OPEN */
549 { /* Some systems name their pseudoterminals so that there are gaps in
550 the usual sequence - for example, on HP9000/S700 systems, there
551 are no pseudoterminals with names ending in 'f'. So we wait for
552 three failures in a row before deciding that we've reached the
554 int failed_count
= 0;
556 if (stat (pty_name
, &stb
) < 0)
559 if (failed_count
>= 3)
566 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
568 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
571 #endif /* no PTY_OPEN */
575 /* check to make certain that both sides are available
576 this avoids a nasty yet stupid bug in rlogins */
577 #ifdef PTY_TTY_NAME_SPRINTF
580 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
581 #endif /* no PTY_TTY_NAME_SPRINTF */
582 if (access (pty_name
, 6) != 0)
597 #endif /* HAVE_PTYS */
603 register Lisp_Object val
, tem
, name1
;
604 register struct Lisp_Process
*p
;
608 p
= allocate_process ();
616 p
->raw_status_new
= 0;
618 p
->mark
= Fmake_marker ();
619 p
->kill_without_query
= 0;
621 #ifdef ADAPTIVE_READ_BUFFERING
622 p
->adaptive_read_buffering
= 0;
623 p
->read_output_delay
= 0;
624 p
->read_output_skip
= 0;
627 /* If name is already in use, modify it until it is unused. */
632 tem
= Fget_process (name1
);
633 if (NILP (tem
)) break;
634 sprintf (suffix
, "<%d>", i
);
635 name1
= concat2 (name
, build_string (suffix
));
639 XSETPROCESS (val
, p
);
640 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
645 remove_process (proc
)
646 register Lisp_Object proc
;
648 register Lisp_Object pair
;
650 pair
= Frassq (proc
, Vprocess_alist
);
651 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
653 deactivate_process (proc
);
656 /* Setup coding systems of PROCESS. */
659 setup_process_coding_systems (process
)
662 struct Lisp_Process
*p
= XPROCESS (process
);
664 int outch
= p
->outfd
;
665 Lisp_Object coding_system
;
667 if (inch
< 0 || outch
< 0)
670 if (!proc_decode_coding_system
[inch
])
671 proc_decode_coding_system
[inch
]
672 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
673 coding_system
= p
->decode_coding_system
;
674 if (! NILP (p
->filter
))
676 else if (BUFFERP (p
->buffer
))
678 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
679 coding_system
= raw_text_coding_system (coding_system
);
681 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
683 if (!proc_encode_coding_system
[outch
])
684 proc_encode_coding_system
[outch
]
685 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
686 setup_coding_system (p
->encode_coding_system
,
687 proc_encode_coding_system
[outch
]);
690 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
691 doc
: /* Return t if OBJECT is a process. */)
695 return PROCESSP (object
) ? Qt
: Qnil
;
698 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
699 doc
: /* Return the process named NAME, or nil if there is none. */)
701 register Lisp_Object name
;
706 return Fcdr (Fassoc (name
, Vprocess_alist
));
709 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
710 doc
: /* Return the (or a) process associated with BUFFER.
711 BUFFER may be a buffer or the name of one. */)
713 register Lisp_Object buffer
;
715 register Lisp_Object buf
, tail
, proc
;
717 if (NILP (buffer
)) return Qnil
;
718 buf
= Fget_buffer (buffer
);
719 if (NILP (buf
)) return Qnil
;
721 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
723 proc
= Fcdr (XCAR (tail
));
724 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
730 /* This is how commands for the user decode process arguments. It
731 accepts a process, a process name, a buffer, a buffer name, or nil.
732 Buffers denote the first process in the buffer, and nil denotes the
737 register Lisp_Object name
;
739 register Lisp_Object proc
, obj
;
742 obj
= Fget_process (name
);
744 obj
= Fget_buffer (name
);
746 error ("Process %s does not exist", SDATA (name
));
748 else if (NILP (name
))
749 obj
= Fcurrent_buffer ();
753 /* Now obj should be either a buffer object or a process object.
757 proc
= Fget_buffer_process (obj
);
759 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
771 /* Fdelete_process promises to immediately forget about the process, but in
772 reality, Emacs needs to remember those processes until they have been
773 treated by sigchld_handler; otherwise this handler would consider the
774 process as being synchronous and say that the synchronous process is
776 static Lisp_Object deleted_pid_list
;
779 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
780 doc
: /* Delete PROCESS: kill it and forget about it immediately.
781 PROCESS may be a process, a buffer, the name of a process or buffer, or
782 nil, indicating the current buffer's process. */)
784 register Lisp_Object process
;
786 register struct Lisp_Process
*p
;
788 process
= get_process (process
);
789 p
= XPROCESS (process
);
791 p
->raw_status_new
= 0;
792 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
794 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
795 p
->tick
= ++process_tick
;
797 redisplay_preserve_echo_area (13);
799 else if (p
->infd
>= 0)
803 /* Assignment to EMACS_INT stops GCC whining about limited range
805 EMACS_INT pid
= p
->pid
;
807 /* No problem storing the pid here, as it is still in Vprocess_alist. */
808 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
809 /* GC treated elements set to nil. */
810 Fdelq (Qnil
, deleted_pid_list
));
811 /* If the process has already signaled, remove it from the list. */
812 if (p
->raw_status_new
)
815 if (CONSP (p
->status
))
816 symbol
= XCAR (p
->status
);
817 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
819 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
823 Fkill_process (process
, Qnil
);
824 /* Do this now, since remove_process will make sigchld_handler do nothing. */
826 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
827 p
->tick
= ++process_tick
;
829 redisplay_preserve_echo_area (13);
832 remove_process (process
);
836 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
837 doc
: /* Return the status of PROCESS.
838 The returned value is one of the following symbols:
839 run -- for a process that is running.
840 stop -- for a process stopped but continuable.
841 exit -- for a process that has exited.
842 signal -- for a process that has got a fatal signal.
843 open -- for a network stream connection that is open.
844 listen -- for a network stream server that is listening.
845 closed -- for a network stream connection that is closed.
846 connect -- when waiting for a non-blocking connection to complete.
847 failed -- when a non-blocking connection has failed.
848 nil -- if arg is a process name and no such process exists.
849 PROCESS may be a process, a buffer, the name of a process, or
850 nil, indicating the current buffer's process. */)
852 register Lisp_Object process
;
854 register struct Lisp_Process
*p
;
855 register Lisp_Object status
;
857 if (STRINGP (process
))
858 process
= Fget_process (process
);
860 process
= get_process (process
);
865 p
= XPROCESS (process
);
866 if (p
->raw_status_new
)
870 status
= XCAR (status
);
871 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
873 if (EQ (status
, Qexit
))
875 else if (EQ (p
->command
, Qt
))
877 else if (EQ (status
, Qrun
))
883 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
885 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
886 If PROCESS has not yet exited or died, return 0. */)
888 register Lisp_Object process
;
890 CHECK_PROCESS (process
);
891 if (XPROCESS (process
)->raw_status_new
)
892 update_status (XPROCESS (process
));
893 if (CONSP (XPROCESS (process
)->status
))
894 return XCAR (XCDR (XPROCESS (process
)->status
));
895 return make_number (0);
898 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
899 doc
: /* Return the process id of PROCESS.
900 This is the pid of the external process which PROCESS uses or talks to.
901 For a network connection, this value is nil. */)
903 register Lisp_Object process
;
905 /* Assignment to EMACS_INT stops GCC whining about limited range of
909 CHECK_PROCESS (process
);
910 pid
= XPROCESS (process
)->pid
;
911 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
914 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
915 doc
: /* Return the name of PROCESS, as a string.
916 This is the name of the program invoked in PROCESS,
917 possibly modified to make it unique among process names. */)
919 register Lisp_Object process
;
921 CHECK_PROCESS (process
);
922 return XPROCESS (process
)->name
;
925 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
926 doc
: /* Return the command that was executed to start PROCESS.
927 This is a list of strings, the first string being the program executed
928 and the rest of the strings being the arguments given to it.
929 For a network or serial process, this is nil (process is running) or t
930 \(process is stopped). */)
932 register Lisp_Object process
;
934 CHECK_PROCESS (process
);
935 return XPROCESS (process
)->command
;
938 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
939 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
940 This is the terminal that the process itself reads and writes on,
941 not the name of the pty that Emacs uses to talk with that terminal. */)
943 register Lisp_Object process
;
945 CHECK_PROCESS (process
);
946 return XPROCESS (process
)->tty_name
;
949 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
951 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
953 register Lisp_Object process
, buffer
;
955 struct Lisp_Process
*p
;
957 CHECK_PROCESS (process
);
959 CHECK_BUFFER (buffer
);
960 p
= XPROCESS (process
);
962 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
963 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
964 setup_process_coding_systems (process
);
968 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
970 doc
: /* Return the buffer PROCESS is associated with.
971 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
973 register Lisp_Object process
;
975 CHECK_PROCESS (process
);
976 return XPROCESS (process
)->buffer
;
979 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
981 doc
: /* Return the marker for the end of the last output from PROCESS. */)
983 register Lisp_Object process
;
985 CHECK_PROCESS (process
);
986 return XPROCESS (process
)->mark
;
989 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
991 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
992 A value of t means stop accepting output from the process.
994 When a process has a filter, its buffer is not used for output.
995 Instead, each time it does output, the entire string of output is
996 passed to the filter.
998 The filter gets two arguments: the process and the string of output.
999 The string argument is normally a multibyte string, except:
1000 - if the process' input coding system is no-conversion or raw-text,
1001 it is a unibyte string (the non-converted input), or else
1002 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1003 string (the result of converting the decoded input multibyte
1004 string to unibyte with `string-make-unibyte'). */)
1006 register Lisp_Object process
, filter
;
1008 struct Lisp_Process
*p
;
1010 CHECK_PROCESS (process
);
1011 p
= XPROCESS (process
);
1013 /* Don't signal an error if the process' input file descriptor
1014 is closed. This could make debugging Lisp more difficult,
1015 for example when doing something like
1017 (setq process (start-process ...))
1019 (set-process-filter process ...) */
1023 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1025 FD_CLR (p
->infd
, &input_wait_mask
);
1026 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1028 else if (EQ (p
->filter
, Qt
)
1029 /* Network or serial process not stopped: */
1030 && !EQ (p
->command
, Qt
))
1032 FD_SET (p
->infd
, &input_wait_mask
);
1033 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1038 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1039 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1040 setup_process_coding_systems (process
);
1044 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1046 doc
: /* Returns the filter function of PROCESS; nil if none.
1047 See `set-process-filter' for more info on filter functions. */)
1049 register Lisp_Object process
;
1051 CHECK_PROCESS (process
);
1052 return XPROCESS (process
)->filter
;
1055 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1057 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1058 The sentinel is called as a function when the process changes state.
1059 It gets two arguments: the process, and a string describing the change. */)
1061 register Lisp_Object process
, sentinel
;
1063 struct Lisp_Process
*p
;
1065 CHECK_PROCESS (process
);
1066 p
= XPROCESS (process
);
1068 p
->sentinel
= sentinel
;
1069 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1070 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1074 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1076 doc
: /* Return the sentinel of PROCESS; nil if none.
1077 See `set-process-sentinel' for more info on sentinels. */)
1079 register Lisp_Object process
;
1081 CHECK_PROCESS (process
);
1082 return XPROCESS (process
)->sentinel
;
1085 DEFUN ("set-process-window-size", Fset_process_window_size
,
1086 Sset_process_window_size
, 3, 3, 0,
1087 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1088 (process
, height
, width
)
1089 register Lisp_Object process
, height
, width
;
1091 CHECK_PROCESS (process
);
1092 CHECK_NATNUM (height
);
1093 CHECK_NATNUM (width
);
1095 if (XPROCESS (process
)->infd
< 0
1096 || set_window_size (XPROCESS (process
)->infd
,
1097 XINT (height
), XINT (width
)) <= 0)
1103 DEFUN ("set-process-inherit-coding-system-flag",
1104 Fset_process_inherit_coding_system_flag
,
1105 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1106 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1107 If the second argument FLAG is non-nil, then the variable
1108 `buffer-file-coding-system' of the buffer associated with PROCESS
1109 will be bound to the value of the coding system used to decode
1112 This is useful when the coding system specified for the process buffer
1113 leaves either the character code conversion or the end-of-line conversion
1114 unspecified, or if the coding system used to decode the process output
1115 is more appropriate for saving the process buffer.
1117 Binding the variable `inherit-process-coding-system' to non-nil before
1118 starting the process is an alternative way of setting the inherit flag
1119 for the process which will run. */)
1121 register Lisp_Object process
, flag
;
1123 CHECK_PROCESS (process
);
1124 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1128 DEFUN ("process-inherit-coding-system-flag",
1129 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1131 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1132 If this flag is t, `buffer-file-coding-system' of the buffer
1133 associated with PROCESS will inherit the coding system used to decode
1134 the process output. */)
1136 register Lisp_Object process
;
1138 CHECK_PROCESS (process
);
1139 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1142 DEFUN ("set-process-query-on-exit-flag",
1143 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1145 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1146 If the second argument FLAG is non-nil, Emacs will query the user before
1147 exiting or killing a buffer if PROCESS is running. */)
1149 register Lisp_Object process
, flag
;
1151 CHECK_PROCESS (process
);
1152 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1156 DEFUN ("process-query-on-exit-flag",
1157 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1159 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1161 register Lisp_Object process
;
1163 CHECK_PROCESS (process
);
1164 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1167 #ifdef DATAGRAM_SOCKETS
1168 Lisp_Object
Fprocess_datagram_address ();
1171 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1173 doc
: /* Return the contact info of PROCESS; t for a real child.
1174 For a network or serial connection, the value depends on the optional
1175 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1176 SERVICE) for a network connection or (PORT SPEED) for a serial
1177 connection. If KEY is t, the complete contact information for the
1178 connection is returned, else the specific value for the keyword KEY is
1179 returned. See `make-network-process' or `make-serial-process' for a
1180 list of keywords. */)
1182 register Lisp_Object process
, key
;
1184 Lisp_Object contact
;
1186 CHECK_PROCESS (process
);
1187 contact
= XPROCESS (process
)->childp
;
1189 #ifdef DATAGRAM_SOCKETS
1190 if (DATAGRAM_CONN_P (process
)
1191 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1192 contact
= Fplist_put (contact
, QCremote
,
1193 Fprocess_datagram_address (process
));
1196 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1198 if (NILP (key
) && NETCONN_P (process
))
1199 return Fcons (Fplist_get (contact
, QChost
),
1200 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1201 if (NILP (key
) && SERIALCONN_P (process
))
1202 return Fcons (Fplist_get (contact
, QCport
),
1203 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1204 return Fplist_get (contact
, key
);
1207 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1209 doc
: /* Return the plist of PROCESS. */)
1211 register Lisp_Object process
;
1213 CHECK_PROCESS (process
);
1214 return XPROCESS (process
)->plist
;
1217 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1219 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1221 register Lisp_Object process
, plist
;
1223 CHECK_PROCESS (process
);
1226 XPROCESS (process
)->plist
= plist
;
1230 #if 0 /* Turned off because we don't currently record this info
1231 in the process. Perhaps add it. */
1232 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1233 doc
: /* Return the connection type of PROCESS.
1234 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1235 a socket connection. */)
1237 Lisp_Object process
;
1239 return XPROCESS (process
)->type
;
1243 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1244 doc
: /* Return the connection type of PROCESS.
1245 The value is either the symbol `real', `network', or `serial'.
1246 PROCESS may be a process, a buffer, the name of a process or buffer, or
1247 nil, indicating the current buffer's process. */)
1249 Lisp_Object process
;
1252 proc
= get_process (process
);
1253 return XPROCESS (proc
)->type
;
1257 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1259 doc
: /* Convert network ADDRESS from internal format to a string.
1260 A 4 or 5 element vector represents an IPv4 address (with port number).
1261 An 8 or 9 element vector represents an IPv6 address (with port number).
1262 If optional second argument OMIT-PORT is non-nil, don't include a port
1263 number in the string, even when present in ADDRESS.
1264 Returns nil if format of ADDRESS is invalid. */)
1265 (address
, omit_port
)
1266 Lisp_Object address
, omit_port
;
1271 if (STRINGP (address
)) /* AF_LOCAL */
1274 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1276 register struct Lisp_Vector
*p
= XVECTOR (address
);
1277 Lisp_Object args
[10];
1280 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1282 args
[0] = build_string ("%d.%d.%d.%d");
1285 else if (p
->size
== 5)
1287 args
[0] = build_string ("%d.%d.%d.%d:%d");
1290 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1292 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1295 else if (p
->size
== 9)
1297 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1303 for (i
= 0; i
< nargs
; i
++)
1305 EMACS_INT element
= XINT (p
->contents
[i
]);
1307 if (element
< 0 || element
> 65535)
1310 if (nargs
<= 5 /* IPv4 */
1311 && i
< 4 /* host, not port */
1315 args
[i
+1] = p
->contents
[i
];
1318 return Fformat (nargs
+1, args
);
1321 if (CONSP (address
))
1323 Lisp_Object args
[2];
1324 args
[0] = build_string ("<Family %d>");
1325 args
[1] = Fcar (address
);
1326 return Fformat (2, args
);
1334 list_processes_1 (query_only
)
1335 Lisp_Object query_only
;
1337 register Lisp_Object tail
, tem
;
1338 Lisp_Object proc
, minspace
, tem1
;
1339 register struct Lisp_Process
*p
;
1341 int w_proc
, w_buffer
, w_tty
;
1343 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1345 w_proc
= 4; /* Proc */
1346 w_buffer
= 6; /* Buffer */
1347 w_tty
= 0; /* Omit if no ttys */
1349 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1353 proc
= Fcdr (XCAR (tail
));
1354 p
= XPROCESS (proc
);
1357 if (!NILP (query_only
) && p
->kill_without_query
)
1359 if (STRINGP (p
->name
)
1360 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1362 if (!NILP (p
->buffer
))
1364 if (NILP (XBUFFER (p
->buffer
)->name
))
1367 w_buffer
= 8; /* (Killed) */
1369 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1372 if (STRINGP (p
->tty_name
)
1373 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1377 XSETFASTINT (i_status
, w_proc
+ 1);
1378 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1381 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1382 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1387 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1390 XSETFASTINT (minspace
, 1);
1392 set_buffer_internal (XBUFFER (Vstandard_output
));
1393 current_buffer
->undo_list
= Qt
;
1395 current_buffer
->truncate_lines
= Qt
;
1397 write_string ("Proc", -1);
1398 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1399 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1402 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1404 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1405 write_string ("\n", -1);
1407 write_string ("----", -1);
1408 Findent_to (i_status
, minspace
); write_string ("------", -1);
1409 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1412 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1414 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1415 write_string ("\n", -1);
1417 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1421 proc
= Fcdr (XCAR (tail
));
1422 p
= XPROCESS (proc
);
1425 if (!NILP (query_only
) && p
->kill_without_query
)
1428 Finsert (1, &p
->name
);
1429 Findent_to (i_status
, minspace
);
1431 if (p
->raw_status_new
)
1434 if (CONSP (p
->status
))
1435 symbol
= XCAR (p
->status
);
1437 if (EQ (symbol
, Qsignal
))
1440 tem
= Fcar (Fcdr (p
->status
));
1441 Fprinc (symbol
, Qnil
);
1443 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1445 if (EQ (symbol
, Qexit
))
1446 write_string ("closed", -1);
1447 else if (EQ (p
->command
, Qt
))
1448 write_string ("stopped", -1);
1449 else if (EQ (symbol
, Qrun
))
1450 write_string ("open", -1);
1452 Fprinc (symbol
, Qnil
);
1454 else if (SERIALCONN1_P (p
))
1456 write_string ("running", -1);
1459 Fprinc (symbol
, Qnil
);
1461 if (EQ (symbol
, Qexit
))
1464 tem
= Fcar (Fcdr (p
->status
));
1467 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1468 write_string (tembuf
, -1);
1472 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1475 Findent_to (i_buffer
, minspace
);
1476 if (NILP (p
->buffer
))
1477 insert_string ("(none)");
1478 else if (NILP (XBUFFER (p
->buffer
)->name
))
1479 insert_string ("(Killed)");
1481 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1485 Findent_to (i_tty
, minspace
);
1486 if (STRINGP (p
->tty_name
))
1487 Finsert (1, &p
->tty_name
);
1490 Findent_to (i_command
, minspace
);
1492 if (EQ (p
->status
, Qlisten
))
1494 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1495 if (INTEGERP (port
))
1496 port
= Fnumber_to_string (port
);
1498 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1499 sprintf (tembuf
, "(network %s server on %s)\n",
1500 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1501 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1502 insert_string (tembuf
);
1504 else if (NETCONN1_P (p
))
1506 /* For a local socket, there is no host name,
1507 so display service instead. */
1508 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1509 if (!STRINGP (host
))
1511 host
= Fplist_get (p
->childp
, QCservice
);
1512 if (INTEGERP (host
))
1513 host
= Fnumber_to_string (host
);
1516 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1517 sprintf (tembuf
, "(network %s connection to %s)\n",
1518 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1519 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1520 insert_string (tembuf
);
1522 else if (SERIALCONN1_P (p
))
1524 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1525 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1526 insert_string ("(serial port ");
1528 insert_string (SDATA (port
));
1530 insert_string ("?");
1531 if (INTEGERP (speed
))
1533 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1534 insert_string (tembuf
);
1536 insert_string (")\n");
1550 insert_string (" ");
1552 insert_string ("\n");
1557 status_notify (NULL
);
1558 redisplay_preserve_echo_area (13);
1563 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1564 doc
: /* Display a list of all processes.
1565 If optional argument QUERY-ONLY is non-nil, only processes with
1566 the query-on-exit flag set will be listed.
1567 Any process listed as exited or signaled is actually eliminated
1568 after the listing is made. */)
1570 Lisp_Object query_only
;
1572 internal_with_output_to_temp_buffer ("*Process List*",
1573 list_processes_1
, query_only
);
1577 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1578 doc
: /* Return a list of all processes. */)
1581 return Fmapcar (Qcdr
, Vprocess_alist
);
1584 /* Starting asynchronous inferior processes. */
1586 static Lisp_Object
start_process_unwind ();
1588 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1589 doc
: /* Start a program in a subprocess. Return the process object for it.
1590 NAME is name for process. It is modified if necessary to make it unique.
1591 BUFFER is the buffer (or buffer name) to associate with the process.
1593 Process output (both standard output and standard error streams) goes
1594 at end of BUFFER, unless you specify an output stream or filter
1595 function to handle the output. BUFFER may also be nil, meaning that
1596 this process is not associated with any buffer.
1598 PROGRAM is the program file name. It is searched for in PATH. If
1599 nil, just associate a pty with the buffer. Remaining arguments are
1600 strings to give program as arguments.
1602 If you want to separate standard output from standard error, invoke
1603 the command through a shell and redirect one of them using the shell
1606 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1609 register Lisp_Object
*args
;
1611 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1612 register unsigned char **new_argv
;
1614 int count
= SPECPDL_INDEX ();
1618 buffer
= Fget_buffer_create (buffer
);
1620 /* Make sure that the child will be able to chdir to the current
1621 buffer's current directory, or its unhandled equivalent. We
1622 can't just have the child check for an error when it does the
1623 chdir, since it's in a vfork.
1625 We have to GCPRO around this because Fexpand_file_name and
1626 Funhandled_file_name_directory might call a file name handling
1627 function. The argument list is protected by the caller, so all
1628 we really have to worry about is buffer. */
1630 struct gcpro gcpro1
, gcpro2
;
1632 current_dir
= current_buffer
->directory
;
1634 GCPRO2 (buffer
, current_dir
);
1636 current_dir
= Funhandled_file_name_directory (current_dir
);
1637 if (NILP (current_dir
))
1638 /* If the file name handler says that current_dir is unreachable, use
1639 a sensible default. */
1640 current_dir
= build_string ("~/");
1641 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1642 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1643 report_file_error ("Setting current directory",
1644 Fcons (current_buffer
->directory
, Qnil
));
1650 CHECK_STRING (name
);
1654 if (!NILP (program
))
1655 CHECK_STRING (program
);
1657 proc
= make_process (name
);
1658 /* If an error occurs and we can't start the process, we want to
1659 remove it from the process list. This means that each error
1660 check in create_process doesn't need to call remove_process
1661 itself; it's all taken care of here. */
1662 record_unwind_protect (start_process_unwind
, proc
);
1664 XPROCESS (proc
)->childp
= Qt
;
1665 XPROCESS (proc
)->plist
= Qnil
;
1666 XPROCESS (proc
)->type
= Qreal
;
1667 XPROCESS (proc
)->buffer
= buffer
;
1668 XPROCESS (proc
)->sentinel
= Qnil
;
1669 XPROCESS (proc
)->filter
= Qnil
;
1670 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1672 #ifdef ADAPTIVE_READ_BUFFERING
1673 XPROCESS (proc
)->adaptive_read_buffering
1674 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1675 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1678 /* Make the process marker point into the process buffer (if any). */
1679 if (BUFFERP (buffer
))
1680 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1681 BUF_ZV (XBUFFER (buffer
)),
1682 BUF_ZV_BYTE (XBUFFER (buffer
)));
1685 /* Decide coding systems for communicating with the process. Here
1686 we don't setup the structure coding_system nor pay attention to
1687 unibyte mode. They are done in create_process. */
1689 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1690 Lisp_Object coding_systems
= Qt
;
1691 Lisp_Object val
, *args2
;
1692 struct gcpro gcpro1
, gcpro2
;
1694 val
= Vcoding_system_for_read
;
1697 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1698 args2
[0] = Qstart_process
;
1699 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1700 GCPRO2 (proc
, current_dir
);
1701 if (!NILP (program
))
1702 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1704 if (CONSP (coding_systems
))
1705 val
= XCAR (coding_systems
);
1706 else if (CONSP (Vdefault_process_coding_system
))
1707 val
= XCAR (Vdefault_process_coding_system
);
1709 XPROCESS (proc
)->decode_coding_system
= val
;
1711 val
= Vcoding_system_for_write
;
1714 if (EQ (coding_systems
, Qt
))
1716 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1717 args2
[0] = Qstart_process
;
1718 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1719 GCPRO2 (proc
, current_dir
);
1720 if (!NILP (program
))
1721 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1724 if (CONSP (coding_systems
))
1725 val
= XCDR (coding_systems
);
1726 else if (CONSP (Vdefault_process_coding_system
))
1727 val
= XCDR (Vdefault_process_coding_system
);
1729 XPROCESS (proc
)->encode_coding_system
= val
;
1733 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1734 XPROCESS (proc
)->decoding_carryover
= 0;
1735 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1737 XPROCESS (proc
)->inherit_coding_system_flag
1738 = !(NILP (buffer
) || !inherit_process_coding_system
);
1740 if (!NILP (program
))
1742 /* If program file name is not absolute, search our path for it.
1743 Put the name we will really use in TEM. */
1744 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1745 && !(SCHARS (program
) > 1
1746 && IS_DEVICE_SEP (SREF (program
, 1))))
1748 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1751 GCPRO4 (name
, program
, buffer
, current_dir
);
1752 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1755 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1756 tem
= Fexpand_file_name (tem
, Qnil
);
1760 if (!NILP (Ffile_directory_p (program
)))
1761 error ("Specified program for new process is a directory");
1765 /* If program file name starts with /: for quoting a magic name,
1767 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1768 && SREF (tem
, 1) == ':')
1769 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1772 struct gcpro gcpro1
;
1775 /* Encode the file name and put it in NEW_ARGV.
1776 That's where the child will use it to execute the program. */
1777 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1779 /* Here we encode arguments by the coding system used for sending
1780 data to the process. We don't support using different coding
1781 systems for encoding arguments and for encoding data sent to the
1784 for (i
= 3; i
< nargs
; i
++)
1786 tem
= Fcons (args
[i
], tem
);
1787 CHECK_STRING (XCAR (tem
));
1788 if (STRING_MULTIBYTE (XCAR (tem
)))
1790 code_convert_string_norecord
1791 (XCAR (tem
), XPROCESS (proc
)->encode_coding_system
, 1));
1797 /* Now that everything is encoded we can collect the strings into
1799 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1800 new_argv
[nargs
- 2] = 0;
1802 for (i
= nargs
- 3; i
>= 0; i
--)
1804 new_argv
[i
] = SDATA (XCAR (tem
));
1808 create_process (proc
, (char **) new_argv
, current_dir
);
1813 return unbind_to (count
, proc
);
1816 /* This function is the unwind_protect form for Fstart_process. If
1817 PROC doesn't have its pid set, then we know someone has signaled
1818 an error and the process wasn't started successfully, so we should
1819 remove it from the process list. */
1821 start_process_unwind (proc
)
1824 if (!PROCESSP (proc
))
1827 /* Was PROC started successfully? */
1828 if (XPROCESS (proc
)->pid
== -1)
1829 remove_process (proc
);
1835 create_process_1 (timer
)
1836 struct atimer
*timer
;
1838 /* Nothing to do. */
1842 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1845 /* Mimic blocking of signals on system V, which doesn't really have it. */
1847 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1848 int sigchld_deferred
;
1851 create_process_sigchld ()
1853 signal (SIGCHLD
, create_process_sigchld
);
1855 sigchld_deferred
= 1;
1862 create_process (process
, new_argv
, current_dir
)
1863 Lisp_Object process
;
1865 Lisp_Object current_dir
;
1867 int inchannel
, outchannel
;
1870 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1871 int wait_child_setup
[2];
1873 #ifdef POSIX_SIGNALS
1876 struct sigaction sigint_action
;
1877 struct sigaction sigquit_action
;
1879 struct sigaction sighup_action
;
1881 #endif /* POSIX_SIGNALS */
1882 /* Use volatile to protect variables from being clobbered by longjmp. */
1883 volatile int forkin
, forkout
;
1884 volatile int pty_flag
= 0;
1886 extern char **environ
;
1889 inchannel
= outchannel
= -1;
1892 if (!NILP (Vprocess_connection_type
))
1893 outchannel
= inchannel
= allocate_pty ();
1897 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1898 /* On most USG systems it does not work to open the pty's tty here,
1899 then close it and reopen it in the child. */
1901 /* Don't let this terminal become our controlling terminal
1902 (in case we don't have one). */
1903 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1905 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1908 report_file_error ("Opening pty", Qnil
);
1910 forkin
= forkout
= -1;
1911 #endif /* not USG, or USG_SUBTTY_WORKS */
1915 #endif /* HAVE_PTYS */
1920 report_file_error ("Creating pipe", Qnil
);
1926 emacs_close (inchannel
);
1927 emacs_close (forkout
);
1928 report_file_error ("Creating pipe", Qnil
);
1934 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1938 tem
= pipe (wait_child_setup
);
1940 report_file_error ("Creating pipe", Qnil
);
1941 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1943 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1946 emacs_close (wait_child_setup
[0]);
1947 emacs_close (wait_child_setup
[1]);
1948 report_file_error ("Setting file descriptor flags", Qnil
);
1954 /* Replaced by close_process_descs */
1955 set_exclusive_use (inchannel
);
1956 set_exclusive_use (outchannel
);
1960 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1961 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1964 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1965 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1969 /* Record this as an active process, with its channels.
1970 As a result, child_setup will close Emacs's side of the pipes. */
1971 chan_process
[inchannel
] = process
;
1972 XPROCESS (process
)->infd
= inchannel
;
1973 XPROCESS (process
)->outfd
= outchannel
;
1975 /* Previously we recorded the tty descriptor used in the subprocess.
1976 It was only used for getting the foreground tty process, so now
1977 we just reopen the device (see emacs_get_tty_pgrp) as this is
1978 more portable (see USG_SUBTTY_WORKS above). */
1980 XPROCESS (process
)->pty_flag
= pty_flag
;
1981 XPROCESS (process
)->status
= Qrun
;
1982 setup_process_coding_systems (process
);
1984 /* Delay interrupts until we have a chance to store
1985 the new fork's pid in its process structure */
1986 #ifdef POSIX_SIGNALS
1987 sigemptyset (&blocked
);
1989 sigaddset (&blocked
, SIGCHLD
);
1991 #ifdef HAVE_WORKING_VFORK
1992 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1993 this sets the parent's signal handlers as well as the child's.
1994 So delay all interrupts whose handlers the child might munge,
1995 and record the current handlers so they can be restored later. */
1996 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1997 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1999 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
2001 #endif /* HAVE_WORKING_VFORK */
2002 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
2003 #else /* !POSIX_SIGNALS */
2005 #if defined (BSD_SYSTEM)
2006 sigsetmask (sigmask (SIGCHLD
));
2007 #endif /* BSD_SYSTEM */
2008 #endif /* SIGCHLD */
2009 #endif /* !POSIX_SIGNALS */
2011 FD_SET (inchannel
, &input_wait_mask
);
2012 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2013 if (inchannel
> max_process_desc
)
2014 max_process_desc
= inchannel
;
2016 /* Until we store the proper pid, enable sigchld_handler
2017 to recognize an unknown pid as standing for this process.
2018 It is very important not to let this `marker' value stay
2019 in the table after this function has returned; if it does
2020 it might cause call-process to hang and subsequent asynchronous
2021 processes to get their return values scrambled. */
2022 XPROCESS (process
)->pid
= -1;
2027 /* child_setup must clobber environ on systems with true vfork.
2028 Protect it from permanent change. */
2029 char **save_environ
= environ
;
2031 current_dir
= ENCODE_FILE (current_dir
);
2036 #endif /* not WINDOWSNT */
2038 int xforkin
= forkin
;
2039 int xforkout
= forkout
;
2041 #if 0 /* This was probably a mistake--it duplicates code later on,
2042 but fails to handle all the cases. */
2043 /* Make sure SIGCHLD is not blocked in the child. */
2044 sigsetmask (SIGEMPTYMASK
);
2047 /* Make the pty be the controlling terminal of the process. */
2049 /* First, disconnect its current controlling terminal. */
2051 /* We tried doing setsid only if pty_flag, but it caused
2052 process_set_signal to fail on SGI when using a pipe. */
2054 /* Make the pty's terminal the controlling terminal. */
2058 /* We ignore the return value
2059 because faith@cs.unc.edu says that is necessary on Linux. */
2060 ioctl (xforkin
, TIOCSCTTY
, 0);
2063 #else /* not HAVE_SETSID */
2065 /* It's very important to call setpgrp here and no time
2066 afterwards. Otherwise, we lose our controlling tty which
2067 is set when we open the pty. */
2070 #endif /* not HAVE_SETSID */
2071 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2072 if (pty_flag
&& xforkin
>= 0)
2075 tcgetattr (xforkin
, &t
);
2077 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2078 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2081 #if defined (NTTYDISC) && defined (TIOCSETD)
2082 if (pty_flag
&& xforkin
>= 0)
2084 /* Use new line discipline. */
2085 int ldisc
= NTTYDISC
;
2086 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2091 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2092 can do TIOCSPGRP only to the process's controlling tty. */
2095 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2096 I can't test it since I don't have 4.3. */
2097 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2098 ioctl (j
, TIOCNOTTY
, 0);
2101 /* In order to get a controlling terminal on some versions
2102 of BSD, it is necessary to put the process in pgrp 0
2103 before it opens the terminal. */
2111 #endif /* TIOCNOTTY */
2113 #if !defined (DONT_REOPEN_PTY)
2114 /*** There is a suggestion that this ought to be a
2115 conditional on TIOCSPGRP,
2116 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2117 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2118 that system does seem to need this code, even though
2119 both HAVE_SETSID and TIOCSCTTY are defined. */
2120 /* Now close the pty (if we had it open) and reopen it.
2121 This makes the pty the controlling terminal of the subprocess. */
2125 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2128 emacs_close (xforkin
);
2129 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2133 emacs_write (1, "Couldn't open the pty terminal ", 31);
2134 emacs_write (1, pty_name
, strlen (pty_name
));
2135 emacs_write (1, "\n", 1);
2140 #endif /* not DONT_REOPEN_PTY */
2142 #ifdef SETUP_SLAVE_PTY
2147 #endif /* SETUP_SLAVE_PTY */
2149 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2150 Now reenable it in the child, so it will die when we want it to. */
2152 signal (SIGHUP
, SIG_DFL
);
2154 #endif /* HAVE_PTYS */
2156 signal (SIGINT
, SIG_DFL
);
2157 signal (SIGQUIT
, SIG_DFL
);
2159 /* Stop blocking signals in the child. */
2160 #ifdef POSIX_SIGNALS
2161 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2162 #else /* !POSIX_SIGNALS */
2164 #if defined (BSD_SYSTEM)
2165 sigsetmask (SIGEMPTYMASK
);
2166 #endif /* BSD_SYSTEM */
2167 #endif /* SIGCHLD */
2168 #endif /* !POSIX_SIGNALS */
2171 child_setup_tty (xforkout
);
2173 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2174 new_argv
, 1, current_dir
);
2175 #else /* not WINDOWSNT */
2177 emacs_close (wait_child_setup
[0]);
2179 child_setup (xforkin
, xforkout
, xforkout
,
2180 new_argv
, 1, current_dir
);
2181 #endif /* not WINDOWSNT */
2183 environ
= save_environ
;
2188 /* This runs in the Emacs process. */
2192 emacs_close (forkin
);
2193 if (forkin
!= forkout
&& forkout
>= 0)
2194 emacs_close (forkout
);
2198 /* vfork succeeded. */
2199 XPROCESS (process
)->pid
= pid
;
2202 register_child (pid
, inchannel
);
2203 #endif /* WINDOWSNT */
2205 /* If the subfork execv fails, and it exits,
2206 this close hangs. I don't know why.
2207 So have an interrupt jar it loose. */
2209 struct atimer
*timer
;
2213 EMACS_SET_SECS_USECS (offset
, 1, 0);
2214 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2217 emacs_close (forkin
);
2219 cancel_atimer (timer
);
2223 if (forkin
!= forkout
&& forkout
>= 0)
2224 emacs_close (forkout
);
2228 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2231 XPROCESS (process
)->tty_name
= Qnil
;
2233 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2234 /* Wait for child_setup to complete in case that vfork is
2235 actually defined as fork. The descriptor wait_child_setup[1]
2236 of a pipe is closed at the child side either by close-on-exec
2237 on successful execvp or the _exit call in child_setup. */
2241 emacs_close (wait_child_setup
[1]);
2242 emacs_read (wait_child_setup
[0], &dummy
, 1);
2243 emacs_close (wait_child_setup
[0]);
2248 /* Restore the signal state whether vfork succeeded or not.
2249 (We will signal an error, below, if it failed.) */
2250 #ifdef POSIX_SIGNALS
2251 #ifdef HAVE_WORKING_VFORK
2252 /* Restore the parent's signal handlers. */
2253 sigaction (SIGINT
, &sigint_action
, 0);
2254 sigaction (SIGQUIT
, &sigquit_action
, 0);
2256 sigaction (SIGHUP
, &sighup_action
, 0);
2258 #endif /* HAVE_WORKING_VFORK */
2259 /* Stop blocking signals in the parent. */
2260 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2261 #else /* !POSIX_SIGNALS */
2263 #if defined (BSD_SYSTEM)
2264 sigsetmask (SIGEMPTYMASK
);
2265 #endif /* BSD_SYSTEM */
2266 #endif /* SIGCHLD */
2267 #endif /* !POSIX_SIGNALS */
2269 /* Now generate the error if vfork failed. */
2271 report_file_error ("Doing vfork", Qnil
);
2275 create_pty (process
)
2276 Lisp_Object process
;
2278 int inchannel
, outchannel
;
2280 /* Use volatile to protect variables from being clobbered by longjmp. */
2281 volatile int forkin
, forkout
;
2282 volatile int pty_flag
= 0;
2284 inchannel
= outchannel
= -1;
2287 if (!NILP (Vprocess_connection_type
))
2288 outchannel
= inchannel
= allocate_pty ();
2292 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2293 /* On most USG systems it does not work to open the pty's tty here,
2294 then close it and reopen it in the child. */
2296 /* Don't let this terminal become our controlling terminal
2297 (in case we don't have one). */
2298 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2300 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2303 report_file_error ("Opening pty", Qnil
);
2304 #if defined (DONT_REOPEN_PTY)
2305 /* In the case that vfork is defined as fork, the parent process
2306 (Emacs) may send some data before the child process completes
2307 tty options setup. So we setup tty before forking. */
2308 child_setup_tty (forkout
);
2309 #endif /* DONT_REOPEN_PTY */
2311 forkin
= forkout
= -1;
2312 #endif /* not USG, or USG_SUBTTY_WORKS */
2315 #endif /* HAVE_PTYS */
2318 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2319 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2322 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2323 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2327 /* Record this as an active process, with its channels.
2328 As a result, child_setup will close Emacs's side of the pipes. */
2329 chan_process
[inchannel
] = process
;
2330 XPROCESS (process
)->infd
= inchannel
;
2331 XPROCESS (process
)->outfd
= outchannel
;
2333 /* Previously we recorded the tty descriptor used in the subprocess.
2334 It was only used for getting the foreground tty process, so now
2335 we just reopen the device (see emacs_get_tty_pgrp) as this is
2336 more portable (see USG_SUBTTY_WORKS above). */
2338 XPROCESS (process
)->pty_flag
= pty_flag
;
2339 XPROCESS (process
)->status
= Qrun
;
2340 setup_process_coding_systems (process
);
2342 FD_SET (inchannel
, &input_wait_mask
);
2343 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2344 if (inchannel
> max_process_desc
)
2345 max_process_desc
= inchannel
;
2347 XPROCESS (process
)->pid
= -2;
2350 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2353 XPROCESS (process
)->tty_name
= Qnil
;
2359 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2360 The address family of sa is not included in the result. */
2363 conv_sockaddr_to_lisp (sa
, len
)
2364 struct sockaddr
*sa
;
2367 Lisp_Object address
;
2370 register struct Lisp_Vector
*p
;
2372 /* Workaround for a bug in getsockname on BSD: Names bound to
2373 sockets in the UNIX domain are inaccessible; getsockname returns
2374 a zero length name. */
2375 if (len
< OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2376 return empty_unibyte_string
;
2378 switch (sa
->sa_family
)
2382 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2383 len
= sizeof (sin
->sin_addr
) + 1;
2384 address
= Fmake_vector (make_number (len
), Qnil
);
2385 p
= XVECTOR (address
);
2386 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2387 cp
= (unsigned char *) &sin
->sin_addr
;
2393 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2394 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2395 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2396 address
= Fmake_vector (make_number (len
), Qnil
);
2397 p
= XVECTOR (address
);
2398 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2399 for (i
= 0; i
< len
; i
++)
2400 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2404 #ifdef HAVE_LOCAL_SOCKETS
2407 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2408 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2409 if (sockun
->sun_path
[i
] == 0)
2411 return make_unibyte_string (sockun
->sun_path
, i
);
2415 len
-= OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2416 address
= Fcons (make_number (sa
->sa_family
),
2417 Fmake_vector (make_number (len
), Qnil
));
2418 p
= XVECTOR (XCDR (address
));
2419 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2425 p
->contents
[i
++] = make_number (*cp
++);
2431 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2434 get_lisp_to_sockaddr_size (address
, familyp
)
2435 Lisp_Object address
;
2438 register struct Lisp_Vector
*p
;
2440 if (VECTORP (address
))
2442 p
= XVECTOR (address
);
2446 return sizeof (struct sockaddr_in
);
2449 else if (p
->size
== 9)
2451 *familyp
= AF_INET6
;
2452 return sizeof (struct sockaddr_in6
);
2456 #ifdef HAVE_LOCAL_SOCKETS
2457 else if (STRINGP (address
))
2459 *familyp
= AF_LOCAL
;
2460 return sizeof (struct sockaddr_un
);
2463 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2465 struct sockaddr
*sa
;
2466 *familyp
= XINT (XCAR (address
));
2467 p
= XVECTOR (XCDR (address
));
2468 return p
->size
+ sizeof (sa
->sa_family
);
2473 /* Convert an address object (vector or string) to an internal sockaddr.
2475 The address format has been basically validated by
2476 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2477 it could have come from user data. So if FAMILY is not valid,
2478 we return after zeroing *SA. */
2481 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2483 Lisp_Object address
;
2484 struct sockaddr
*sa
;
2487 register struct Lisp_Vector
*p
;
2488 register unsigned char *cp
= NULL
;
2493 if (VECTORP (address
))
2495 p
= XVECTOR (address
);
2496 if (family
== AF_INET
)
2498 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2499 len
= sizeof (sin
->sin_addr
) + 1;
2500 i
= XINT (p
->contents
[--len
]);
2501 sin
->sin_port
= htons (i
);
2502 cp
= (unsigned char *)&sin
->sin_addr
;
2503 sa
->sa_family
= family
;
2506 else if (family
== AF_INET6
)
2508 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2509 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2510 len
= sizeof (sin6
->sin6_addr
) + 1;
2511 i
= XINT (p
->contents
[--len
]);
2512 sin6
->sin6_port
= htons (i
);
2513 for (i
= 0; i
< len
; i
++)
2514 if (INTEGERP (p
->contents
[i
]))
2516 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2519 sa
->sa_family
= family
;
2524 else if (STRINGP (address
))
2526 #ifdef HAVE_LOCAL_SOCKETS
2527 if (family
== AF_LOCAL
)
2529 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2530 cp
= SDATA (address
);
2531 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2532 sockun
->sun_path
[i
] = *cp
++;
2533 sa
->sa_family
= family
;
2540 p
= XVECTOR (XCDR (address
));
2541 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2544 for (i
= 0; i
< len
; i
++)
2545 if (INTEGERP (p
->contents
[i
]))
2546 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2549 #ifdef DATAGRAM_SOCKETS
2550 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2552 doc
: /* Get the current datagram address associated with PROCESS. */)
2554 Lisp_Object process
;
2558 CHECK_PROCESS (process
);
2560 if (!DATAGRAM_CONN_P (process
))
2563 channel
= XPROCESS (process
)->infd
;
2564 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2565 datagram_address
[channel
].len
);
2568 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2570 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2571 Returns nil upon error setting address, ADDRESS otherwise. */)
2573 Lisp_Object process
, address
;
2578 CHECK_PROCESS (process
);
2580 if (!DATAGRAM_CONN_P (process
))
2583 channel
= XPROCESS (process
)->infd
;
2585 len
= get_lisp_to_sockaddr_size (address
, &family
);
2586 if (datagram_address
[channel
].len
!= len
)
2588 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2594 static const struct socket_options
{
2595 /* The name of this option. Should be lowercase version of option
2596 name without SO_ prefix. */
2598 /* Option level SOL_... */
2600 /* Option number SO_... */
2602 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2603 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2604 } socket_options
[] =
2606 #ifdef SO_BINDTODEVICE
2607 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2610 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2613 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2616 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2619 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2622 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2625 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2628 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2630 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2633 /* Set option OPT to value VAL on socket S.
2635 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2636 Signals an error if setting a known option fails.
2640 set_socket_option (s
, opt
, val
)
2642 Lisp_Object opt
, val
;
2645 const struct socket_options
*sopt
;
2650 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2651 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2652 if (strcmp (name
, sopt
->name
) == 0)
2655 switch (sopt
->opttype
)
2660 optval
= NILP (val
) ? 0 : 1;
2661 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2662 &optval
, sizeof (optval
));
2670 optval
= XINT (val
);
2672 error ("Bad option value for %s", name
);
2673 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2674 &optval
, sizeof (optval
));
2678 #ifdef SO_BINDTODEVICE
2681 char devname
[IFNAMSIZ
+1];
2683 /* This is broken, at least in the Linux 2.4 kernel.
2684 To unbind, the arg must be a zero integer, not the empty string.
2685 This should work on all systems. KFS. 2003-09-23. */
2686 bzero (devname
, sizeof devname
);
2689 char *arg
= (char *) SDATA (val
);
2690 int len
= min (strlen (arg
), IFNAMSIZ
);
2691 bcopy (arg
, devname
, len
);
2693 else if (!NILP (val
))
2694 error ("Bad option value for %s", name
);
2695 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2704 struct linger linger
;
2707 linger
.l_linger
= 0;
2709 linger
.l_linger
= XINT (val
);
2711 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2712 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2713 &linger
, sizeof (linger
));
2723 report_file_error ("Cannot set network option",
2724 Fcons (opt
, Fcons (val
, Qnil
)));
2725 return (1 << sopt
->optbit
);
2729 DEFUN ("set-network-process-option",
2730 Fset_network_process_option
, Sset_network_process_option
,
2732 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2733 See `make-network-process' for a list of options and values.
2734 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2735 OPTION is not a supported option, return nil instead; otherwise return t. */)
2736 (process
, option
, value
, no_error
)
2737 Lisp_Object process
, option
, value
;
2738 Lisp_Object no_error
;
2741 struct Lisp_Process
*p
;
2743 CHECK_PROCESS (process
);
2744 p
= XPROCESS (process
);
2745 if (!NETCONN1_P (p
))
2746 error ("Process is not a network process");
2750 error ("Process is not running");
2752 if (set_socket_option (s
, option
, value
))
2754 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2758 if (NILP (no_error
))
2759 error ("Unknown or unsupported option");
2766 DEFUN ("serial-process-configure",
2767 Fserial_process_configure
,
2768 Sserial_process_configure
,
2770 doc
: /* Configure speed, bytesize, etc. of a serial process.
2772 Arguments are specified as keyword/argument pairs. Attributes that
2773 are not given are re-initialized from the process's current
2774 configuration (available via the function `process-contact') or set to
2775 reasonable default values. The following arguments are defined:
2781 -- Any of these arguments can be given to identify the process that is
2782 to be configured. If none of these arguments is given, the current
2783 buffer's process is used.
2785 :speed SPEED -- SPEED is the speed of the serial port in bits per
2786 second, also called baud rate. Any value can be given for SPEED, but
2787 most serial ports work only at a few defined values between 1200 and
2788 115200, with 9600 being the most common value. If SPEED is nil, the
2789 serial port is not configured any further, i.e., all other arguments
2790 are ignored. This may be useful for special serial ports such as
2791 Bluetooth-to-serial converters which can only be configured through AT
2792 commands. A value of nil for SPEED can be used only when passed
2793 through `make-serial-process' or `serial-term'.
2795 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2796 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2798 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2799 `odd' (use odd parity), or the symbol `even' (use even parity). If
2800 PARITY is not given, no parity is used.
2802 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2803 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2804 is not given or nil, 1 stopbit is used.
2806 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2807 flowcontrol to be used, which is either nil (don't use flowcontrol),
2808 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2809 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2810 flowcontrol is used.
2812 `serial-process-configure' is called by `make-serial-process' for the
2813 initial configuration of the serial port.
2817 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2819 \(serial-process-configure
2820 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2822 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2824 usage: (serial-process-configure &rest ARGS) */)
2829 struct Lisp_Process
*p
;
2830 Lisp_Object contact
= Qnil
;
2831 Lisp_Object proc
= Qnil
;
2832 struct gcpro gcpro1
;
2834 contact
= Flist (nargs
, args
);
2837 proc
= Fplist_get (contact
, QCprocess
);
2839 proc
= Fplist_get (contact
, QCname
);
2841 proc
= Fplist_get (contact
, QCbuffer
);
2843 proc
= Fplist_get (contact
, QCport
);
2844 proc
= get_process (proc
);
2845 p
= XPROCESS (proc
);
2846 if (!EQ (p
->type
, Qserial
))
2847 error ("Not a serial process");
2849 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2855 serial_configure (p
, contact
);
2861 /* Used by make-serial-process to recover from errors. */
2862 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2864 if (!PROCESSP (proc
))
2866 remove_process (proc
);
2870 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2872 doc
: /* Create and return a serial port process.
2874 In Emacs, serial port connections are represented by process objects,
2875 so input and output work as for subprocesses, and `delete-process'
2876 closes a serial port connection. However, a serial process has no
2877 process id, it cannot be signaled, and the status codes are different
2878 from normal processes.
2880 `make-serial-process' creates a process and a buffer, on which you
2881 probably want to use `process-send-string'. Try \\[serial-term] for
2882 an interactive terminal. See below for examples.
2884 Arguments are specified as keyword/argument pairs. The following
2885 arguments are defined:
2887 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2888 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2889 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2890 the backslashes in strings).
2892 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2893 which is called by `make-serial-process'.
2895 :name NAME -- NAME is the name of the process. If NAME is not given,
2896 the value of PORT is used.
2898 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2899 with the process. Process output goes at the end of that buffer,
2900 unless you specify an output stream or filter function to handle the
2901 output. If BUFFER is not given, the value of NAME is used.
2903 :coding CODING -- If CODING is a symbol, it specifies the coding
2904 system used for both reading and writing for this process. If CODING
2905 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2906 ENCODING is used for writing.
2908 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2909 the process is running. If BOOL is not given, query before exiting.
2911 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2912 In the stopped state, a serial process does not accept incoming data,
2913 but you can send outgoing data. The stopped state is cleared by
2914 `continue-process' and set by `stop-process'.
2916 :filter FILTER -- Install FILTER as the process filter.
2918 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2920 :plist PLIST -- Install PLIST as the initial plist of the process.
2927 -- These arguments are handled by `serial-process-configure', which is
2928 called by `make-serial-process'.
2930 The original argument list, possibly modified by later configuration,
2931 is available via the function `process-contact'.
2935 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2937 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2939 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2941 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2943 usage: (make-serial-process &rest ARGS) */)
2949 Lisp_Object proc
, contact
, port
;
2950 struct Lisp_Process
*p
;
2951 struct gcpro gcpro1
;
2952 Lisp_Object name
, buffer
;
2953 Lisp_Object tem
, val
;
2954 int specpdl_count
= -1;
2959 contact
= Flist (nargs
, args
);
2962 port
= Fplist_get (contact
, QCport
);
2964 error ("No port specified");
2965 CHECK_STRING (port
);
2967 if (NILP (Fplist_member (contact
, QCspeed
)))
2968 error (":speed not specified");
2969 if (!NILP (Fplist_get (contact
, QCspeed
)))
2970 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2972 name
= Fplist_get (contact
, QCname
);
2975 CHECK_STRING (name
);
2976 proc
= make_process (name
);
2977 specpdl_count
= SPECPDL_INDEX ();
2978 record_unwind_protect (make_serial_process_unwind
, proc
);
2979 p
= XPROCESS (proc
);
2981 fd
= serial_open ((char*) SDATA (port
));
2984 if (fd
> max_process_desc
)
2985 max_process_desc
= fd
;
2986 chan_process
[fd
] = proc
;
2988 buffer
= Fplist_get (contact
, QCbuffer
);
2991 buffer
= Fget_buffer_create (buffer
);
2994 p
->childp
= contact
;
2995 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2997 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2998 p
->filter
= Fplist_get (contact
, QCfilter
);
3000 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3001 p
->kill_without_query
= 1;
3002 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
3006 if (!EQ (p
->command
, Qt
))
3008 FD_SET (fd
, &input_wait_mask
);
3009 FD_SET (fd
, &non_keyboard_wait_mask
);
3012 if (BUFFERP (buffer
))
3014 set_marker_both (p
->mark
, buffer
,
3015 BUF_ZV (XBUFFER (buffer
)),
3016 BUF_ZV_BYTE (XBUFFER (buffer
)));
3019 tem
= Fplist_member (contact
, QCcoding
);
3020 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3026 val
= XCAR (XCDR (tem
));
3030 else if (!NILP (Vcoding_system_for_read
))
3031 val
= Vcoding_system_for_read
;
3032 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3033 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3035 p
->decode_coding_system
= val
;
3040 val
= XCAR (XCDR (tem
));
3044 else if (!NILP (Vcoding_system_for_write
))
3045 val
= Vcoding_system_for_write
;
3046 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3047 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3049 p
->encode_coding_system
= val
;
3051 setup_process_coding_systems (proc
);
3052 p
->decoding_buf
= make_uninit_string (0);
3053 p
->decoding_carryover
= 0;
3054 p
->encoding_buf
= make_uninit_string (0);
3055 p
->inherit_coding_system_flag
3056 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3058 Fserial_process_configure(nargs
, args
);
3060 specpdl_ptr
= specpdl
+ specpdl_count
;
3065 #endif /* HAVE_SERIAL */
3067 /* Create a network stream/datagram client/server process. Treated
3068 exactly like a normal process when reading and writing. Primary
3069 differences are in status display and process deletion. A network
3070 connection has no PID; you cannot signal it. All you can do is
3071 stop/continue it and deactivate/close it via delete-process */
3073 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3075 doc
: /* Create and return a network server or client process.
3077 In Emacs, network connections are represented by process objects, so
3078 input and output work as for subprocesses and `delete-process' closes
3079 a network connection. However, a network process has no process id,
3080 it cannot be signaled, and the status codes are different from normal
3083 Arguments are specified as keyword/argument pairs. The following
3084 arguments are defined:
3086 :name NAME -- NAME is name for process. It is modified if necessary
3089 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3090 with the process. Process output goes at end of that buffer, unless
3091 you specify an output stream or filter function to handle the output.
3092 BUFFER may be also nil, meaning that this process is not associated
3095 :host HOST -- HOST is name of the host to connect to, or its IP
3096 address. The symbol `local' specifies the local host. If specified
3097 for a server process, it must be a valid name or address for the local
3098 host, and only clients connecting to that address will be accepted.
3100 :service SERVICE -- SERVICE is name of the service desired, or an
3101 integer specifying a port number to connect to. If SERVICE is t,
3102 a random port number is selected for the server. (If Emacs was
3103 compiled with getaddrinfo, a port number can also be specified as a
3104 string, e.g. "80", as well as an integer. This is not portable.)
3106 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3107 stream type connection, `datagram' creates a datagram type connection,
3108 `seqpacket' creates a reliable datagram connection.
3110 :family FAMILY -- FAMILY is the address (and protocol) family for the
3111 service specified by HOST and SERVICE. The default (nil) is to use
3112 whatever address family (IPv4 or IPv6) that is defined for the host
3113 and port number specified by HOST and SERVICE. Other address families
3115 local -- for a local (i.e. UNIX) address specified by SERVICE.
3116 ipv4 -- use IPv4 address family only.
3117 ipv6 -- use IPv6 address family only.
3119 :local ADDRESS -- ADDRESS is the local address used for the connection.
3120 This parameter is ignored when opening a client process. When specified
3121 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3123 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3124 connection. This parameter is ignored when opening a stream server
3125 process. For a datagram server process, it specifies the initial
3126 setting of the remote datagram address. When specified for a client
3127 process, the FAMILY, HOST, and SERVICE args are ignored.
3129 The format of ADDRESS depends on the address family:
3130 - An IPv4 address is represented as an vector of integers [A B C D P]
3131 corresponding to numeric IP address A.B.C.D and port number P.
3132 - A local address is represented as a string with the address in the
3133 local address space.
3134 - An "unsupported family" address is represented by a cons (F . AV)
3135 where F is the family number and AV is a vector containing the socket
3136 address data with one element per address data byte. Do not rely on
3137 this format in portable code, as it may depend on implementation
3138 defined constants, data sizes, and data structure alignment.
3140 :coding CODING -- If CODING is a symbol, it specifies the coding
3141 system used for both reading and writing for this process. If CODING
3142 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3143 ENCODING is used for writing.
3145 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3146 return without waiting for the connection to complete; instead, the
3147 sentinel function will be called with second arg matching "open" (if
3148 successful) or "failed" when the connect completes. Default is to use
3149 a blocking connect (i.e. wait) for stream type connections.
3151 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3152 running when Emacs is exited.
3154 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3155 In the stopped state, a server process does not accept new
3156 connections, and a client process does not handle incoming traffic.
3157 The stopped state is cleared by `continue-process' and set by
3160 :filter FILTER -- Install FILTER as the process filter.
3162 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3163 process filter are multibyte, otherwise they are unibyte.
3164 If this keyword is not specified, the strings are multibyte if
3165 `default-enable-multibyte-characters' is non-nil.
3167 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3169 :log LOG -- Install LOG as the server process log function. This
3170 function is called when the server accepts a network connection from a
3171 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3172 is the server process, CLIENT is the new process for the connection,
3173 and MESSAGE is a string.
3175 :plist PLIST -- Install PLIST as the new process' initial plist.
3177 :server QLEN -- if QLEN is non-nil, create a server process for the
3178 specified FAMILY, SERVICE, and connection type (stream or datagram).
3179 If QLEN is an integer, it is used as the max. length of the server's
3180 pending connection queue (also known as the backlog); the default
3181 queue length is 5. Default is to create a client process.
3183 The following network options can be specified for this connection:
3185 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3186 :dontroute BOOL -- Only send to directly connected hosts.
3187 :keepalive BOOL -- Send keep-alive messages on network stream.
3188 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3189 :oobinline BOOL -- Place out-of-band data in receive data stream.
3190 :priority INT -- Set protocol defined priority for sent packets.
3191 :reuseaddr BOOL -- Allow reusing a recently used local address
3192 (this is allowed by default for a server process).
3193 :bindtodevice NAME -- bind to interface NAME. Using this may require
3194 special privileges on some systems.
3196 Consult the relevant system programmer's manual pages for more
3197 information on using these options.
3200 A server process will listen for and accept connections from clients.
3201 When a client connection is accepted, a new network process is created
3202 for the connection with the following parameters:
3204 - The client's process name is constructed by concatenating the server
3205 process' NAME and a client identification string.
3206 - If the FILTER argument is non-nil, the client process will not get a
3207 separate process buffer; otherwise, the client's process buffer is a newly
3208 created buffer named after the server process' BUFFER name or process
3209 NAME concatenated with the client identification string.
3210 - The connection type and the process filter and sentinel parameters are
3211 inherited from the server process' TYPE, FILTER and SENTINEL.
3212 - The client process' contact info is set according to the client's
3213 addressing information (typically an IP address and a port number).
3214 - The client process' plist is initialized from the server's plist.
3216 Notice that the FILTER and SENTINEL args are never used directly by
3217 the server process. Also, the BUFFER argument is not used directly by
3218 the server process, but via the optional :log function, accepted (and
3219 failed) connections may be logged in the server process' buffer.
3221 The original argument list, modified with the actual connection
3222 information, is available via the `process-contact' function.
3224 usage: (make-network-process &rest ARGS) */)
3230 Lisp_Object contact
;
3231 struct Lisp_Process
*p
;
3232 #ifdef HAVE_GETADDRINFO
3233 struct addrinfo ai
, *res
, *lres
;
3234 struct addrinfo hints
;
3235 char *portstring
, portbuf
[128];
3236 #else /* HAVE_GETADDRINFO */
3237 struct _emacs_addrinfo
3243 struct sockaddr
*ai_addr
;
3244 struct _emacs_addrinfo
*ai_next
;
3246 #endif /* HAVE_GETADDRINFO */
3247 struct sockaddr_in address_in
;
3248 #ifdef HAVE_LOCAL_SOCKETS
3249 struct sockaddr_un address_un
;
3254 int s
= -1, outch
, inch
;
3255 struct gcpro gcpro1
;
3256 int count
= SPECPDL_INDEX ();
3258 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3260 Lisp_Object name
, buffer
, host
, service
, address
;
3261 Lisp_Object filter
, sentinel
;
3262 int is_non_blocking_client
= 0;
3263 int is_server
= 0, backlog
= 5;
3270 /* Save arguments for process-contact and clone-process. */
3271 contact
= Flist (nargs
, args
);
3275 /* Ensure socket support is loaded if available. */
3276 init_winsock (TRUE
);
3279 /* :type TYPE (nil: stream, datagram */
3280 tem
= Fplist_get (contact
, QCtype
);
3282 socktype
= SOCK_STREAM
;
3283 #ifdef DATAGRAM_SOCKETS
3284 else if (EQ (tem
, Qdatagram
))
3285 socktype
= SOCK_DGRAM
;
3287 #ifdef HAVE_SEQPACKET
3288 else if (EQ (tem
, Qseqpacket
))
3289 socktype
= SOCK_SEQPACKET
;
3292 error ("Unsupported connection type");
3295 tem
= Fplist_get (contact
, QCserver
);
3298 /* Don't support network sockets when non-blocking mode is
3299 not available, since a blocked Emacs is not useful. */
3300 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3301 error ("Network servers not supported");
3305 backlog
= XINT (tem
);
3309 /* Make QCaddress an alias for :local (server) or :remote (client). */
3310 QCaddress
= is_server
? QClocal
: QCremote
;
3313 if (!is_server
&& socktype
!= SOCK_DGRAM
3314 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3316 #ifndef NON_BLOCKING_CONNECT
3317 error ("Non-blocking connect not supported");
3319 is_non_blocking_client
= 1;
3323 name
= Fplist_get (contact
, QCname
);
3324 buffer
= Fplist_get (contact
, QCbuffer
);
3325 filter
= Fplist_get (contact
, QCfilter
);
3326 sentinel
= Fplist_get (contact
, QCsentinel
);
3328 CHECK_STRING (name
);
3330 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3331 ai
.ai_socktype
= socktype
;
3336 /* :local ADDRESS or :remote ADDRESS */
3337 address
= Fplist_get (contact
, QCaddress
);
3338 if (!NILP (address
))
3340 host
= service
= Qnil
;
3342 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3343 error ("Malformed :address");
3344 ai
.ai_family
= family
;
3345 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3346 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3350 /* :family FAMILY -- nil (for Inet), local, or integer. */
3351 tem
= Fplist_get (contact
, QCfamily
);
3354 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3360 #ifdef HAVE_LOCAL_SOCKETS
3361 else if (EQ (tem
, Qlocal
))
3365 else if (EQ (tem
, Qipv6
))
3368 else if (EQ (tem
, Qipv4
))
3370 else if (INTEGERP (tem
))
3371 family
= XINT (tem
);
3373 error ("Unknown address family");
3375 ai
.ai_family
= family
;
3377 /* :service SERVICE -- string, integer (port number), or t (random port). */
3378 service
= Fplist_get (contact
, QCservice
);
3380 #ifdef HAVE_LOCAL_SOCKETS
3381 if (family
== AF_LOCAL
)
3383 /* Host is not used. */
3385 CHECK_STRING (service
);
3386 bzero (&address_un
, sizeof address_un
);
3387 address_un
.sun_family
= AF_LOCAL
;
3388 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3389 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3390 ai
.ai_addrlen
= sizeof address_un
;
3395 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3396 host
= Fplist_get (contact
, QChost
);
3399 if (EQ (host
, Qlocal
))
3400 host
= build_string ("localhost");
3401 CHECK_STRING (host
);
3404 /* Slow down polling to every ten seconds.
3405 Some kernels have a bug which causes retrying connect to fail
3406 after a connect. Polling can interfere with gethostbyname too. */
3407 #ifdef POLL_FOR_INPUT
3408 if (socktype
!= SOCK_DGRAM
)
3410 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3411 bind_polling_period (10);
3415 #ifdef HAVE_GETADDRINFO
3416 /* If we have a host, use getaddrinfo to resolve both host and service.
3417 Otherwise, use getservbyname to lookup the service. */
3421 /* SERVICE can either be a string or int.
3422 Convert to a C string for later use by getaddrinfo. */
3423 if (EQ (service
, Qt
))
3425 else if (INTEGERP (service
))
3427 sprintf (portbuf
, "%ld", (long) XINT (service
));
3428 portstring
= portbuf
;
3432 CHECK_STRING (service
);
3433 portstring
= SDATA (service
);
3438 memset (&hints
, 0, sizeof (hints
));
3440 hints
.ai_family
= family
;
3441 hints
.ai_socktype
= socktype
;
3442 hints
.ai_protocol
= 0;
3444 #ifdef HAVE_RES_INIT
3448 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3450 #ifdef HAVE_GAI_STRERROR
3451 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3453 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3459 #endif /* HAVE_GETADDRINFO */
3461 /* We end up here if getaddrinfo is not defined, or in case no hostname
3462 has been specified (e.g. for a local server process). */
3464 if (EQ (service
, Qt
))
3466 else if (INTEGERP (service
))
3467 port
= htons ((unsigned short) XINT (service
));
3470 struct servent
*svc_info
;
3471 CHECK_STRING (service
);
3472 svc_info
= getservbyname (SDATA (service
),
3473 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3475 error ("Unknown service: %s", SDATA (service
));
3476 port
= svc_info
->s_port
;
3479 bzero (&address_in
, sizeof address_in
);
3480 address_in
.sin_family
= family
;
3481 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3482 address_in
.sin_port
= port
;
3484 #ifndef HAVE_GETADDRINFO
3487 struct hostent
*host_info_ptr
;
3489 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3490 as it may `hang' Emacs for a very long time. */
3494 #ifdef HAVE_RES_INIT
3498 host_info_ptr
= gethostbyname (SDATA (host
));
3503 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3504 host_info_ptr
->h_length
);
3505 family
= host_info_ptr
->h_addrtype
;
3506 address_in
.sin_family
= family
;
3509 /* Attempt to interpret host as numeric inet address */
3511 unsigned long numeric_addr
;
3512 numeric_addr
= inet_addr ((char *) SDATA (host
));
3513 if (numeric_addr
== -1)
3514 error ("Unknown host \"%s\"", SDATA (host
));
3516 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3517 sizeof (address_in
.sin_addr
));
3521 #endif /* not HAVE_GETADDRINFO */
3523 ai
.ai_family
= family
;
3524 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3525 ai
.ai_addrlen
= sizeof address_in
;
3529 /* Do this in case we never enter the for-loop below. */
3530 count1
= SPECPDL_INDEX ();
3533 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3539 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3546 #ifdef DATAGRAM_SOCKETS
3547 if (!is_server
&& socktype
== SOCK_DGRAM
)
3549 #endif /* DATAGRAM_SOCKETS */
3551 #ifdef NON_BLOCKING_CONNECT
3552 if (is_non_blocking_client
)
3555 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3557 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3569 /* Make us close S if quit. */
3570 record_unwind_protect (close_file_unwind
, make_number (s
));
3572 /* Parse network options in the arg list.
3573 We simply ignore anything which isn't a known option (including other keywords).
3574 An error is signaled if setting a known option fails. */
3575 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3576 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3580 /* Configure as a server socket. */
3582 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3583 explicit :reuseaddr key to override this. */
3584 #ifdef HAVE_LOCAL_SOCKETS
3585 if (family
!= AF_LOCAL
)
3587 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3590 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3591 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3594 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3595 report_file_error ("Cannot bind server socket", Qnil
);
3597 #ifdef HAVE_GETSOCKNAME
3598 if (EQ (service
, Qt
))
3600 struct sockaddr_in sa1
;
3601 int len1
= sizeof (sa1
);
3602 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3604 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3605 service
= make_number (ntohs (sa1
.sin_port
));
3606 contact
= Fplist_put (contact
, QCservice
, service
);
3611 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3612 report_file_error ("Cannot listen on server socket", Qnil
);
3620 /* This turns off all alarm-based interrupts; the
3621 bind_polling_period call above doesn't always turn all the
3622 short-interval ones off, especially if interrupt_input is
3625 It'd be nice to be able to control the connect timeout
3626 though. Would non-blocking connect calls be portable?
3628 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3630 turn_on_atimers (0);
3632 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3635 turn_on_atimers (1);
3637 if (ret
== 0 || xerrno
== EISCONN
)
3639 /* The unwind-protect will be discarded afterwards.
3640 Likewise for immediate_quit. */
3644 #ifdef NON_BLOCKING_CONNECT
3646 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3650 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3658 /* Discard the unwind protect closing S. */
3659 specpdl_ptr
= specpdl
+ count1
;
3663 if (xerrno
== EINTR
)
3669 #ifdef DATAGRAM_SOCKETS
3670 if (socktype
== SOCK_DGRAM
)
3672 if (datagram_address
[s
].sa
)
3674 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3675 datagram_address
[s
].len
= lres
->ai_addrlen
;
3679 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3680 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3683 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3684 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3685 conv_lisp_to_sockaddr (rfamily
, remote
,
3686 datagram_address
[s
].sa
, rlen
);
3690 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3693 contact
= Fplist_put (contact
, QCaddress
,
3694 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3695 #ifdef HAVE_GETSOCKNAME
3698 struct sockaddr_in sa1
;
3699 int len1
= sizeof (sa1
);
3700 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3701 contact
= Fplist_put (contact
, QClocal
,
3702 conv_sockaddr_to_lisp (&sa1
, len1
));
3709 #ifdef HAVE_GETADDRINFO
3718 /* Discard the unwind protect for closing S, if any. */
3719 specpdl_ptr
= specpdl
+ count1
;
3721 /* Unwind bind_polling_period and request_sigio. */
3722 unbind_to (count
, Qnil
);
3726 /* If non-blocking got this far - and failed - assume non-blocking is
3727 not supported after all. This is probably a wrong assumption, but
3728 the normal blocking calls to open-network-stream handles this error
3730 if (is_non_blocking_client
)
3735 report_file_error ("make server process failed", contact
);
3737 report_file_error ("make client process failed", contact
);
3744 buffer
= Fget_buffer_create (buffer
);
3745 proc
= make_process (name
);
3747 chan_process
[inch
] = proc
;
3750 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3753 fcntl (inch
, F_SETFL
, O_NDELAY
);
3757 p
= XPROCESS (proc
);
3759 p
->childp
= contact
;
3760 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3764 p
->sentinel
= sentinel
;
3766 p
->log
= Fplist_get (contact
, QClog
);
3767 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3768 p
->kill_without_query
= 1;
3769 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3774 if (is_server
&& socktype
!= SOCK_DGRAM
)
3775 p
->status
= Qlisten
;
3777 /* Make the process marker point into the process buffer (if any). */
3778 if (BUFFERP (buffer
))
3779 set_marker_both (p
->mark
, buffer
,
3780 BUF_ZV (XBUFFER (buffer
)),
3781 BUF_ZV_BYTE (XBUFFER (buffer
)));
3783 #ifdef NON_BLOCKING_CONNECT
3784 if (is_non_blocking_client
)
3786 /* We may get here if connect did succeed immediately. However,
3787 in that case, we still need to signal this like a non-blocking
3789 p
->status
= Qconnect
;
3790 if (!FD_ISSET (inch
, &connect_wait_mask
))
3792 FD_SET (inch
, &connect_wait_mask
);
3793 num_pending_connects
++;
3798 /* A server may have a client filter setting of Qt, but it must
3799 still listen for incoming connects unless it is stopped. */
3800 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3801 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3803 FD_SET (inch
, &input_wait_mask
);
3804 FD_SET (inch
, &non_keyboard_wait_mask
);
3807 if (inch
> max_process_desc
)
3808 max_process_desc
= inch
;
3810 tem
= Fplist_member (contact
, QCcoding
);
3811 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3812 tem
= Qnil
; /* No error message (too late!). */
3815 /* Setup coding systems for communicating with the network stream. */
3816 struct gcpro gcpro1
;
3817 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3818 Lisp_Object coding_systems
= Qt
;
3819 Lisp_Object args
[5], val
;
3823 val
= XCAR (XCDR (tem
));
3827 else if (!NILP (Vcoding_system_for_read
))
3828 val
= Vcoding_system_for_read
;
3829 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3830 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3831 /* We dare not decode end-of-line format by setting VAL to
3832 Qraw_text, because the existing Emacs Lisp libraries
3833 assume that they receive bare code including a sequene of
3838 if (NILP (host
) || NILP (service
))
3839 coding_systems
= Qnil
;
3842 args
[0] = Qopen_network_stream
, args
[1] = name
,
3843 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3845 coding_systems
= Ffind_operation_coding_system (5, args
);
3848 if (CONSP (coding_systems
))
3849 val
= XCAR (coding_systems
);
3850 else if (CONSP (Vdefault_process_coding_system
))
3851 val
= XCAR (Vdefault_process_coding_system
);
3855 p
->decode_coding_system
= val
;
3859 val
= XCAR (XCDR (tem
));
3863 else if (!NILP (Vcoding_system_for_write
))
3864 val
= Vcoding_system_for_write
;
3865 else if (NILP (current_buffer
->enable_multibyte_characters
))
3869 if (EQ (coding_systems
, Qt
))
3871 if (NILP (host
) || NILP (service
))
3872 coding_systems
= Qnil
;
3875 args
[0] = Qopen_network_stream
, args
[1] = name
,
3876 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3878 coding_systems
= Ffind_operation_coding_system (5, args
);
3882 if (CONSP (coding_systems
))
3883 val
= XCDR (coding_systems
);
3884 else if (CONSP (Vdefault_process_coding_system
))
3885 val
= XCDR (Vdefault_process_coding_system
);
3889 p
->encode_coding_system
= val
;
3891 setup_process_coding_systems (proc
);
3893 p
->decoding_buf
= make_uninit_string (0);
3894 p
->decoding_carryover
= 0;
3895 p
->encoding_buf
= make_uninit_string (0);
3897 p
->inherit_coding_system_flag
3898 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3903 #endif /* HAVE_SOCKETS */
3906 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3909 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3910 doc
: /* Return an alist of all network interfaces and their network address.
3911 Each element is a cons, the car of which is a string containing the
3912 interface name, and the cdr is the network address in internal
3913 format; see the description of ADDRESS in `make-network-process'. */)
3916 struct ifconf ifconf
;
3917 struct ifreq
*ifreqs
= NULL
;
3922 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3928 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3929 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3936 ifconf
.ifc_len
= buf_size
;
3937 ifconf
.ifc_req
= ifreqs
;
3938 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3944 if (ifconf
.ifc_len
== buf_size
)
3948 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3951 while (--ifaces
>= 0)
3953 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3954 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3955 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3957 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3958 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3959 res
= Fcons (Fcons (build_string (namebuf
),
3960 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3961 sizeof (struct sockaddr
))),
3967 #endif /* SIOCGIFCONF */
3969 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3973 const char *flag_sym
;
3976 static const struct ifflag_def ifflag_table
[] = {
3980 #ifdef IFF_BROADCAST
3981 { IFF_BROADCAST
, "broadcast" },
3984 { IFF_DEBUG
, "debug" },
3987 { IFF_LOOPBACK
, "loopback" },
3989 #ifdef IFF_POINTOPOINT
3990 { IFF_POINTOPOINT
, "pointopoint" },
3993 { IFF_RUNNING
, "running" },
3996 { IFF_NOARP
, "noarp" },
3999 { IFF_PROMISC
, "promisc" },
4001 #ifdef IFF_NOTRAILERS
4002 { IFF_NOTRAILERS
, "notrailers" },
4005 { IFF_ALLMULTI
, "allmulti" },
4008 { IFF_MASTER
, "master" },
4011 { IFF_SLAVE
, "slave" },
4013 #ifdef IFF_MULTICAST
4014 { IFF_MULTICAST
, "multicast" },
4017 { IFF_PORTSEL
, "portsel" },
4019 #ifdef IFF_AUTOMEDIA
4020 { IFF_AUTOMEDIA
, "automedia" },
4023 { IFF_DYNAMIC
, "dynamic" },
4026 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
4029 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
4032 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
4035 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
4038 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
4043 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
4044 doc
: /* Return information about network interface named IFNAME.
4045 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4046 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4047 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
4048 FLAGS is the current flags of the interface. */)
4053 Lisp_Object res
= Qnil
;
4058 CHECK_STRING (ifname
);
4060 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
4061 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
4063 s
= socket (AF_INET
, SOCK_STREAM
, 0);
4068 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
4069 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4071 int flags
= rq
.ifr_flags
;
4072 const struct ifflag_def
*fp
;
4076 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4078 if (flags
& fp
->flag_bit
)
4080 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4081 flags
-= fp
->flag_bit
;
4084 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
4086 if (flags
& (1 << fnum
))
4088 elt
= Fcons (make_number (fnum
), elt
);
4093 res
= Fcons (elt
, res
);
4096 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4097 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4099 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4100 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4104 for (n
= 0; n
< 6; n
++)
4105 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4106 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4109 res
= Fcons (elt
, res
);
4112 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4113 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4116 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4117 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4119 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4123 res
= Fcons (elt
, res
);
4126 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4127 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4130 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4133 res
= Fcons (elt
, res
);
4136 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4137 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4140 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4143 res
= Fcons (elt
, res
);
4147 return any
? res
: Qnil
;
4150 #endif /* HAVE_SOCKETS */
4152 /* Turn off input and output for process PROC. */
4155 deactivate_process (proc
)
4158 register int inchannel
, outchannel
;
4159 register struct Lisp_Process
*p
= XPROCESS (proc
);
4161 inchannel
= p
->infd
;
4162 outchannel
= p
->outfd
;
4164 #ifdef ADAPTIVE_READ_BUFFERING
4165 if (p
->read_output_delay
> 0)
4167 if (--process_output_delay_count
< 0)
4168 process_output_delay_count
= 0;
4169 p
->read_output_delay
= 0;
4170 p
->read_output_skip
= 0;
4176 /* Beware SIGCHLD hereabouts. */
4177 flush_pending_output (inchannel
);
4178 emacs_close (inchannel
);
4179 if (outchannel
>= 0 && outchannel
!= inchannel
)
4180 emacs_close (outchannel
);
4184 #ifdef DATAGRAM_SOCKETS
4185 if (DATAGRAM_CHAN_P (inchannel
))
4187 xfree (datagram_address
[inchannel
].sa
);
4188 datagram_address
[inchannel
].sa
= 0;
4189 datagram_address
[inchannel
].len
= 0;
4192 chan_process
[inchannel
] = Qnil
;
4193 FD_CLR (inchannel
, &input_wait_mask
);
4194 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4195 #ifdef NON_BLOCKING_CONNECT
4196 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4198 FD_CLR (inchannel
, &connect_wait_mask
);
4199 if (--num_pending_connects
< 0)
4203 if (inchannel
== max_process_desc
)
4206 /* We just closed the highest-numbered process input descriptor,
4207 so recompute the highest-numbered one now. */
4208 max_process_desc
= 0;
4209 for (i
= 0; i
< MAXDESC
; i
++)
4210 if (!NILP (chan_process
[i
]))
4211 max_process_desc
= i
;
4216 /* Close all descriptors currently in use for communication
4217 with subprocess. This is used in a newly-forked subprocess
4218 to get rid of irrelevant descriptors. */
4221 close_process_descs ()
4225 for (i
= 0; i
< MAXDESC
; i
++)
4227 Lisp_Object process
;
4228 process
= chan_process
[i
];
4229 if (!NILP (process
))
4231 int in
= XPROCESS (process
)->infd
;
4232 int out
= XPROCESS (process
)->outfd
;
4235 if (out
>= 0 && in
!= out
)
4242 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4244 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4245 It is read into the process' buffers or given to their filter functions.
4246 Non-nil arg PROCESS means do not return until some output has been received
4249 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4250 and milliseconds to wait; return after that much time whether or not
4251 there is any subprocess output. If SECONDS is a floating point number,
4252 it specifies a fractional number of seconds to wait.
4253 The MILLISEC argument is obsolete and should be avoided.
4255 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4256 from PROCESS, suspending reading output from other processes.
4257 If JUST-THIS-ONE is an integer, don't run any timers either.
4258 Return non-nil if we received any output before the timeout expired. */)
4259 (process
, seconds
, millisec
, just_this_one
)
4260 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
4262 int secs
, usecs
= 0;
4264 if (! NILP (process
))
4265 CHECK_PROCESS (process
);
4267 just_this_one
= Qnil
;
4269 if (!NILP (millisec
))
4270 { /* Obsolete calling convention using integers rather than floats. */
4271 CHECK_NUMBER (millisec
);
4273 seconds
= make_float (XINT (millisec
) / 1000.0);
4276 CHECK_NUMBER (seconds
);
4277 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4281 if (!NILP (seconds
))
4283 if (INTEGERP (seconds
))
4284 secs
= XINT (seconds
);
4285 else if (FLOATP (seconds
))
4287 double timeout
= XFLOAT_DATA (seconds
);
4288 secs
= (int) timeout
;
4289 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4292 wrong_type_argument (Qnumberp
, seconds
);
4294 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4295 secs
= -1, usecs
= 0;
4298 secs
= NILP (process
) ? -1 : 0;
4301 (wait_reading_process_output (secs
, usecs
, 0, 0,
4303 !NILP (process
) ? XPROCESS (process
) : NULL
,
4304 NILP (just_this_one
) ? 0 :
4305 !INTEGERP (just_this_one
) ? 1 : -1)
4309 /* Accept a connection for server process SERVER on CHANNEL. */
4311 static int connect_counter
= 0;
4314 server_accept_connection (server
, channel
)
4318 Lisp_Object proc
, caller
, name
, buffer
;
4319 Lisp_Object contact
, host
, service
;
4320 struct Lisp_Process
*ps
= XPROCESS (server
);
4321 struct Lisp_Process
*p
;
4325 struct sockaddr_in in
;
4327 struct sockaddr_in6 in6
;
4329 #ifdef HAVE_LOCAL_SOCKETS
4330 struct sockaddr_un un
;
4333 int len
= sizeof saddr
;
4335 s
= accept (channel
, &saddr
.sa
, &len
);
4344 if (code
== EWOULDBLOCK
)
4348 if (!NILP (ps
->log
))
4349 call3 (ps
->log
, server
, Qnil
,
4350 concat3 (build_string ("accept failed with code"),
4351 Fnumber_to_string (make_number (code
)),
4352 build_string ("\n")));
4358 /* Setup a new process to handle the connection. */
4360 /* Generate a unique identification of the caller, and build contact
4361 information for this process. */
4364 switch (saddr
.sa
.sa_family
)
4368 Lisp_Object args
[5];
4369 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4370 args
[0] = build_string ("%d.%d.%d.%d");
4371 args
[1] = make_number (*ip
++);
4372 args
[2] = make_number (*ip
++);
4373 args
[3] = make_number (*ip
++);
4374 args
[4] = make_number (*ip
++);
4375 host
= Fformat (5, args
);
4376 service
= make_number (ntohs (saddr
.in
.sin_port
));
4378 args
[0] = build_string (" <%s:%d>");
4381 caller
= Fformat (3, args
);
4388 Lisp_Object args
[9];
4389 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4391 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4392 for (i
= 0; i
< 8; i
++)
4393 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4394 host
= Fformat (9, args
);
4395 service
= make_number (ntohs (saddr
.in
.sin_port
));
4397 args
[0] = build_string (" <[%s]:%d>");
4400 caller
= Fformat (3, args
);
4405 #ifdef HAVE_LOCAL_SOCKETS
4409 caller
= Fnumber_to_string (make_number (connect_counter
));
4410 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4414 /* Create a new buffer name for this process if it doesn't have a
4415 filter. The new buffer name is based on the buffer name or
4416 process name of the server process concatenated with the caller
4419 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4423 buffer
= ps
->buffer
;
4425 buffer
= Fbuffer_name (buffer
);
4430 buffer
= concat2 (buffer
, caller
);
4431 buffer
= Fget_buffer_create (buffer
);
4435 /* Generate a unique name for the new server process. Combine the
4436 server process name with the caller identification. */
4438 name
= concat2 (ps
->name
, caller
);
4439 proc
= make_process (name
);
4441 chan_process
[s
] = proc
;
4444 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4447 fcntl (s
, F_SETFL
, O_NDELAY
);
4451 p
= XPROCESS (proc
);
4453 /* Build new contact information for this setup. */
4454 contact
= Fcopy_sequence (ps
->childp
);
4455 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4456 contact
= Fplist_put (contact
, QChost
, host
);
4457 if (!NILP (service
))
4458 contact
= Fplist_put (contact
, QCservice
, service
);
4459 contact
= Fplist_put (contact
, QCremote
,
4460 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4461 #ifdef HAVE_GETSOCKNAME
4463 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4464 contact
= Fplist_put (contact
, QClocal
,
4465 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4468 p
->childp
= contact
;
4469 p
->plist
= Fcopy_sequence (ps
->plist
);
4473 p
->sentinel
= ps
->sentinel
;
4474 p
->filter
= ps
->filter
;
4481 /* Client processes for accepted connections are not stopped initially. */
4482 if (!EQ (p
->filter
, Qt
))
4484 FD_SET (s
, &input_wait_mask
);
4485 FD_SET (s
, &non_keyboard_wait_mask
);
4488 if (s
> max_process_desc
)
4489 max_process_desc
= s
;
4491 /* Setup coding system for new process based on server process.
4492 This seems to be the proper thing to do, as the coding system
4493 of the new process should reflect the settings at the time the
4494 server socket was opened; not the current settings. */
4496 p
->decode_coding_system
= ps
->decode_coding_system
;
4497 p
->encode_coding_system
= ps
->encode_coding_system
;
4498 setup_process_coding_systems (proc
);
4500 p
->decoding_buf
= make_uninit_string (0);
4501 p
->decoding_carryover
= 0;
4502 p
->encoding_buf
= make_uninit_string (0);
4504 p
->inherit_coding_system_flag
4505 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4507 if (!NILP (ps
->log
))
4508 call3 (ps
->log
, server
, proc
,
4509 concat3 (build_string ("accept from "),
4510 (STRINGP (host
) ? host
: build_string ("-")),
4511 build_string ("\n")));
4513 if (!NILP (p
->sentinel
))
4514 exec_sentinel (proc
,
4515 concat3 (build_string ("open from "),
4516 (STRINGP (host
) ? host
: build_string ("-")),
4517 build_string ("\n")));
4520 /* This variable is different from waiting_for_input in keyboard.c.
4521 It is used to communicate to a lisp process-filter/sentinel (via the
4522 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4523 for user-input when that process-filter was called.
4524 waiting_for_input cannot be used as that is by definition 0 when
4525 lisp code is being evalled.
4526 This is also used in record_asynch_buffer_change.
4527 For that purpose, this must be 0
4528 when not inside wait_reading_process_output. */
4529 static int waiting_for_user_input_p
;
4532 wait_reading_process_output_unwind (data
)
4535 waiting_for_user_input_p
= XINT (data
);
4539 /* This is here so breakpoints can be put on it. */
4541 wait_reading_process_output_1 ()
4545 /* Use a wrapper around select to work around a bug in gdb 5.3.
4546 Normally, the wrapper is optimized away by inlining.
4548 If emacs is stopped inside select, the gdb backtrace doesn't
4549 show the function which called select, so it is practically
4550 impossible to step through wait_reading_process_output. */
4554 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4556 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4559 return select (n
, rfd
, wfd
, xfd
, tmo
);
4561 #define select select_wrapper
4564 /* Read and dispose of subprocess output while waiting for timeout to
4565 elapse and/or keyboard input to be available.
4568 timeout in seconds, or
4569 zero for no limit, or
4570 -1 means gobble data immediately available but don't wait for any.
4573 an additional duration to wait, measured in microseconds.
4574 If this is nonzero and time_limit is 0, then the timeout
4575 consists of MICROSECS only.
4577 READ_KBD is a lisp value:
4578 0 to ignore keyboard input, or
4579 1 to return when input is available, or
4580 -1 meaning caller will actually read the input, so don't throw to
4581 the quit handler, or
4583 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4584 output that arrives.
4586 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4587 (and gobble terminal input into the buffer if any arrives).
4589 If WAIT_PROC is specified, wait until something arrives from that
4590 process. The return value is true if we read some input from
4593 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4594 (suspending output from other processes). A negative value
4595 means don't run any timers either.
4597 If WAIT_PROC is specified, then the function returns true if we
4598 received input from that process before the timeout elapsed.
4599 Otherwise, return true if we received input from any process. */
4602 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4603 wait_for_cell
, wait_proc
, just_wait_proc
)
4604 int time_limit
, microsecs
, read_kbd
, do_display
;
4605 Lisp_Object wait_for_cell
;
4606 struct Lisp_Process
*wait_proc
;
4609 register int channel
, nfds
;
4610 SELECT_TYPE Available
;
4611 #ifdef NON_BLOCKING_CONNECT
4612 SELECT_TYPE Connecting
;
4615 int check_delay
, no_avail
;
4618 EMACS_TIME timeout
, end_time
;
4619 int wait_channel
= -1;
4620 int got_some_input
= 0;
4621 int count
= SPECPDL_INDEX ();
4623 FD_ZERO (&Available
);
4624 #ifdef NON_BLOCKING_CONNECT
4625 FD_ZERO (&Connecting
);
4628 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4629 if (wait_proc
!= NULL
)
4630 wait_channel
= wait_proc
->infd
;
4632 record_unwind_protect (wait_reading_process_output_unwind
,
4633 make_number (waiting_for_user_input_p
));
4634 waiting_for_user_input_p
= read_kbd
;
4636 /* Since we may need to wait several times,
4637 compute the absolute time to return at. */
4638 if (time_limit
|| microsecs
)
4640 EMACS_GET_TIME (end_time
);
4641 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4642 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4647 int timeout_reduced_for_timers
= 0;
4649 /* If calling from keyboard input, do not quit
4650 since we want to return C-g as an input character.
4651 Otherwise, do pending quit if requested. */
4656 process_pending_signals ();
4659 /* Exit now if the cell we're waiting for became non-nil. */
4660 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4663 /* Compute time from now till when time limit is up */
4664 /* Exit if already run out */
4665 if (time_limit
== -1)
4667 /* -1 specified for timeout means
4668 gobble output available now
4669 but don't wait at all. */
4671 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4673 else if (time_limit
|| microsecs
)
4675 EMACS_GET_TIME (timeout
);
4676 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4677 if (EMACS_TIME_NEG_P (timeout
))
4682 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4685 /* Normally we run timers here.
4686 But not if wait_for_cell; in those cases,
4687 the wait is supposed to be short,
4688 and those callers cannot handle running arbitrary Lisp code here. */
4689 if (NILP (wait_for_cell
)
4690 && just_wait_proc
>= 0)
4692 EMACS_TIME timer_delay
;
4696 int old_timers_run
= timers_run
;
4697 struct buffer
*old_buffer
= current_buffer
;
4698 Lisp_Object old_window
= selected_window
;
4700 timer_delay
= timer_check (1);
4702 /* If a timer has run, this might have changed buffers
4703 an alike. Make read_key_sequence aware of that. */
4704 if (timers_run
!= old_timers_run
4705 && (old_buffer
!= current_buffer
4706 || !EQ (old_window
, selected_window
))
4707 && waiting_for_user_input_p
== -1)
4708 record_asynch_buffer_change ();
4710 if (timers_run
!= old_timers_run
&& do_display
)
4711 /* We must retry, since a timer may have requeued itself
4712 and that could alter the time_delay. */
4713 redisplay_preserve_echo_area (9);
4717 while (!detect_input_pending ());
4719 /* If there is unread keyboard input, also return. */
4721 && requeued_events_pending_p ())
4724 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4726 EMACS_TIME difference
;
4727 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4728 if (EMACS_TIME_NEG_P (difference
))
4730 timeout
= timer_delay
;
4731 timeout_reduced_for_timers
= 1;
4734 /* If time_limit is -1, we are not going to wait at all. */
4735 else if (time_limit
!= -1)
4737 /* This is so a breakpoint can be put here. */
4738 wait_reading_process_output_1 ();
4742 /* Cause C-g and alarm signals to take immediate action,
4743 and cause input available signals to zero out timeout.
4745 It is important that we do this before checking for process
4746 activity. If we get a SIGCHLD after the explicit checks for
4747 process activity, timeout is the only way we will know. */
4749 set_waiting_for_input (&timeout
);
4751 /* If status of something has changed, and no input is
4752 available, notify the user of the change right away. After
4753 this explicit check, we'll let the SIGCHLD handler zap
4754 timeout to get our attention. */
4755 if (update_tick
!= process_tick
)
4758 #ifdef NON_BLOCKING_CONNECT
4762 Atemp
= input_wait_mask
;
4763 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4765 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4766 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4769 #ifdef NON_BLOCKING_CONNECT
4770 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4774 (SELECT_TYPE
*)0, &timeout
)
4777 /* It's okay for us to do this and then continue with
4778 the loop, since timeout has already been zeroed out. */
4779 clear_waiting_for_input ();
4780 status_notify (NULL
);
4781 if (do_display
) redisplay_preserve_echo_area (13);
4785 /* Don't wait for output from a non-running process. Just
4786 read whatever data has already been received. */
4787 if (wait_proc
&& wait_proc
->raw_status_new
)
4788 update_status (wait_proc
);
4790 && ! EQ (wait_proc
->status
, Qrun
)
4791 && ! EQ (wait_proc
->status
, Qconnect
))
4793 int nread
, total_nread
= 0;
4795 clear_waiting_for_input ();
4796 XSETPROCESS (proc
, wait_proc
);
4798 /* Read data from the process, until we exhaust it. */
4799 while (wait_proc
->infd
>= 0)
4801 nread
= read_process_output (proc
, wait_proc
->infd
);
4808 total_nread
+= nread
;
4812 else if (nread
== -1 && EIO
== errno
)
4816 else if (nread
== -1 && EAGAIN
== errno
)
4820 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4824 if (total_nread
> 0 && do_display
)
4825 redisplay_preserve_echo_area (10);
4830 /* Wait till there is something to do */
4832 if (wait_proc
&& just_wait_proc
)
4834 if (wait_proc
->infd
< 0) /* Terminated */
4836 FD_SET (wait_proc
->infd
, &Available
);
4838 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4840 else if (!NILP (wait_for_cell
))
4842 Available
= non_process_wait_mask
;
4844 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4849 Available
= non_keyboard_wait_mask
;
4851 Available
= input_wait_mask
;
4852 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4853 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4856 /* If frame size has changed or the window is newly mapped,
4857 redisplay now, before we start to wait. There is a race
4858 condition here; if a SIGIO arrives between now and the select
4859 and indicates that a frame is trashed, the select may block
4860 displaying a trashed screen. */
4861 if (frame_garbaged
&& do_display
)
4863 clear_waiting_for_input ();
4864 redisplay_preserve_echo_area (11);
4866 set_waiting_for_input (&timeout
);
4870 if (read_kbd
&& detect_input_pending ())
4877 #ifdef NON_BLOCKING_CONNECT
4879 Connecting
= connect_wait_mask
;
4882 #ifdef ADAPTIVE_READ_BUFFERING
4883 /* Set the timeout for adaptive read buffering if any
4884 process has non-zero read_output_skip and non-zero
4885 read_output_delay, and we are not reading output for a
4886 specific wait_channel. It is not executed if
4887 Vprocess_adaptive_read_buffering is nil. */
4888 if (process_output_skip
&& check_delay
> 0)
4890 int usecs
= EMACS_USECS (timeout
);
4891 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4892 usecs
= READ_OUTPUT_DELAY_MAX
;
4893 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4895 proc
= chan_process
[channel
];
4898 /* Find minimum non-zero read_output_delay among the
4899 processes with non-zero read_output_skip. */
4900 if (XPROCESS (proc
)->read_output_delay
> 0)
4903 if (!XPROCESS (proc
)->read_output_skip
)
4905 FD_CLR (channel
, &Available
);
4906 XPROCESS (proc
)->read_output_skip
= 0;
4907 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4908 usecs
= XPROCESS (proc
)->read_output_delay
;
4911 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4912 process_output_skip
= 0;
4915 #if defined (USE_GTK) || defined (HAVE_GCONF)
4917 #elif defined (HAVE_NS)
4922 (max (max (max_process_desc
, max_keyboard_desc
),
4925 #ifdef NON_BLOCKING_CONNECT
4926 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4930 (SELECT_TYPE
*)0, &timeout
);
4935 /* Make C-g and alarm signals set flags again */
4936 clear_waiting_for_input ();
4938 /* If we woke up due to SIGWINCH, actually change size now. */
4939 do_pending_window_change (0);
4941 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4942 /* We wanted the full specified time, so return now. */
4946 if (xerrno
== EINTR
)
4948 else if (xerrno
== EBADF
)
4951 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4952 the child's closure of the pts gives the parent a SIGHUP, and
4953 the ptc file descriptor is automatically closed,
4954 yielding EBADF here or at select() call above.
4955 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4956 in m/ibmrt-aix.h), and here we just ignore the select error.
4957 Cleanup occurs c/o status_notify after SIGCLD. */
4958 no_avail
= 1; /* Cannot depend on values returned */
4964 error ("select error: %s", emacs_strerror (xerrno
));
4969 FD_ZERO (&Available
);
4970 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4973 #if 0 /* When polling is used, interrupt_input is 0,
4974 so get_input_pending should read the input.
4975 So this should not be needed. */
4976 /* If we are using polling for input,
4977 and we see input available, make it get read now.
4978 Otherwise it might not actually get read for a second.
4979 And on hpux, since we turn off polling in wait_reading_process_output,
4980 it might never get read at all if we don't spend much time
4981 outside of wait_reading_process_output. */
4982 if (read_kbd
&& interrupt_input
4983 && keyboard_bit_set (&Available
)
4984 && input_polling_used ())
4985 kill (getpid (), SIGALRM
);
4988 /* Check for keyboard input */
4989 /* If there is any, return immediately
4990 to give it higher priority than subprocesses */
4994 int old_timers_run
= timers_run
;
4995 struct buffer
*old_buffer
= current_buffer
;
4996 Lisp_Object old_window
= selected_window
;
4999 if (detect_input_pending_run_timers (do_display
))
5001 swallow_events (do_display
);
5002 if (detect_input_pending_run_timers (do_display
))
5006 /* If a timer has run, this might have changed buffers
5007 an alike. Make read_key_sequence aware of that. */
5008 if (timers_run
!= old_timers_run
5009 && waiting_for_user_input_p
== -1
5010 && (old_buffer
!= current_buffer
5011 || !EQ (old_window
, selected_window
)))
5012 record_asynch_buffer_change ();
5018 /* If there is unread keyboard input, also return. */
5020 && requeued_events_pending_p ())
5023 /* If we are not checking for keyboard input now,
5024 do process events (but don't run any timers).
5025 This is so that X events will be processed.
5026 Otherwise they may have to wait until polling takes place.
5027 That would causes delays in pasting selections, for example.
5029 (We used to do this only if wait_for_cell.) */
5030 if (read_kbd
== 0 && detect_input_pending ())
5032 swallow_events (do_display
);
5033 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5034 if (detect_input_pending ())
5039 /* Exit now if the cell we're waiting for became non-nil. */
5040 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5044 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5045 go read it. This can happen with X on BSD after logging out.
5046 In that case, there really is no input and no SIGIO,
5047 but select says there is input. */
5049 if (read_kbd
&& interrupt_input
5050 && keyboard_bit_set (&Available
) && ! noninteractive
)
5051 kill (getpid (), SIGIO
);
5055 got_some_input
|= nfds
> 0;
5057 /* If checking input just got us a size-change event from X,
5058 obey it now if we should. */
5059 if (read_kbd
|| ! NILP (wait_for_cell
))
5060 do_pending_window_change (0);
5062 /* Check for data from a process. */
5063 if (no_avail
|| nfds
== 0)
5066 /* Really FIRST_PROC_DESC should be 0 on Unix,
5067 but this is safer in the short run. */
5068 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5070 if (FD_ISSET (channel
, &Available
)
5071 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
5075 /* If waiting for this channel, arrange to return as
5076 soon as no more input to be processed. No more
5078 if (wait_channel
== channel
)
5084 proc
= chan_process
[channel
];
5088 /* If this is a server stream socket, accept connection. */
5089 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5091 server_accept_connection (proc
, channel
);
5095 /* Read data from the process, starting with our
5096 buffered-ahead character if we have one. */
5098 nread
= read_process_output (proc
, channel
);
5101 /* Since read_process_output can run a filter,
5102 which can call accept-process-output,
5103 don't try to read from any other processes
5104 before doing the select again. */
5105 FD_ZERO (&Available
);
5108 redisplay_preserve_echo_area (12);
5111 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5114 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5115 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5117 else if (nread
== -1 && errno
== EAGAIN
)
5121 else if (nread
== -1 && errno
== EAGAIN
)
5123 /* Note that we cannot distinguish between no input
5124 available now and a closed pipe.
5125 With luck, a closed pipe will be accompanied by
5126 subprocess termination and SIGCHLD. */
5127 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5129 #endif /* O_NDELAY */
5130 #endif /* O_NONBLOCK */
5132 /* On some OSs with ptys, when the process on one end of
5133 a pty exits, the other end gets an error reading with
5134 errno = EIO instead of getting an EOF (0 bytes read).
5135 Therefore, if we get an error reading and errno =
5136 EIO, just continue, because the child process has
5137 exited and should clean itself up soon (e.g. when we
5140 However, it has been known to happen that the SIGCHLD
5141 got lost. So raise the signal again just in case.
5143 else if (nread
== -1 && errno
== EIO
)
5145 /* Clear the descriptor now, so we only raise the
5146 signal once. Don't do this if `process' is only
5148 if (XPROCESS (proc
)->pid
!= -2)
5150 FD_CLR (channel
, &input_wait_mask
);
5151 FD_CLR (channel
, &non_keyboard_wait_mask
);
5153 kill (getpid (), SIGCHLD
);
5156 #endif /* HAVE_PTYS */
5157 /* If we can detect process termination, don't consider the process
5158 gone just because its pipe is closed. */
5160 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5165 /* Preserve status of processes already terminated. */
5166 XPROCESS (proc
)->tick
= ++process_tick
;
5167 deactivate_process (proc
);
5168 if (XPROCESS (proc
)->raw_status_new
)
5169 update_status (XPROCESS (proc
));
5170 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5171 XPROCESS (proc
)->status
5172 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5175 #ifdef NON_BLOCKING_CONNECT
5176 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5177 && FD_ISSET (channel
, &connect_wait_mask
))
5179 struct Lisp_Process
*p
;
5181 FD_CLR (channel
, &connect_wait_mask
);
5182 if (--num_pending_connects
< 0)
5185 proc
= chan_process
[channel
];
5189 p
= XPROCESS (proc
);
5192 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5193 So only use it on systems where it is known to work. */
5195 int xlen
= sizeof(xerrno
);
5196 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5201 struct sockaddr pname
;
5202 int pnamelen
= sizeof(pname
);
5204 /* If connection failed, getpeername will fail. */
5206 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
5208 /* Obtain connect failure code through error slippage. */
5211 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
5218 p
->tick
= ++process_tick
;
5219 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5220 deactivate_process (proc
);
5225 /* Execute the sentinel here. If we had relied on
5226 status_notify to do it later, it will read input
5227 from the process before calling the sentinel. */
5228 exec_sentinel (proc
, build_string ("open\n"));
5229 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5231 FD_SET (p
->infd
, &input_wait_mask
);
5232 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5236 #endif /* NON_BLOCKING_CONNECT */
5237 } /* end for each file descriptor */
5238 } /* end while exit conditions not met */
5240 unbind_to (count
, Qnil
);
5242 /* If calling from keyboard input, do not quit
5243 since we want to return C-g as an input character.
5244 Otherwise, do pending quit if requested. */
5247 /* Prevent input_pending from remaining set if we quit. */
5248 clear_input_pending ();
5252 return got_some_input
;
5255 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5258 read_process_output_call (fun_and_args
)
5259 Lisp_Object fun_and_args
;
5261 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5265 read_process_output_error_handler (error
)
5268 cmd_error_internal (error
, "error in process filter: ");
5270 update_echo_area ();
5271 Fsleep_for (make_number (2), Qnil
);
5275 /* Read pending output from the process channel,
5276 starting with our buffered-ahead character if we have one.
5277 Yield number of decoded characters read.
5279 This function reads at most 4096 characters.
5280 If you want to read all available subprocess output,
5281 you must call it repeatedly until it returns zero.
5283 The characters read are decoded according to PROC's coding-system
5287 read_process_output (proc
, channel
)
5289 register int channel
;
5291 register int nbytes
;
5293 register Lisp_Object outstream
;
5294 register struct Lisp_Process
*p
= XPROCESS (proc
);
5295 register int opoint
;
5296 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5297 int carryover
= p
->decoding_carryover
;
5300 chars
= (char *) alloca (carryover
+ readmax
);
5302 /* See the comment above. */
5303 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5305 #ifdef DATAGRAM_SOCKETS
5306 /* We have a working select, so proc_buffered_char is always -1. */
5307 if (DATAGRAM_CHAN_P (channel
))
5309 int len
= datagram_address
[channel
].len
;
5310 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5311 0, datagram_address
[channel
].sa
, &len
);
5315 if (proc_buffered_char
[channel
] < 0)
5317 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5318 #ifdef ADAPTIVE_READ_BUFFERING
5319 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5321 int delay
= p
->read_output_delay
;
5324 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5327 process_output_delay_count
++;
5328 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5331 else if (delay
> 0 && (nbytes
== readmax
))
5333 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5335 process_output_delay_count
--;
5337 p
->read_output_delay
= delay
;
5340 p
->read_output_skip
= 1;
5341 process_output_skip
= 1;
5348 chars
[carryover
] = proc_buffered_char
[channel
];
5349 proc_buffered_char
[channel
] = -1;
5350 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5354 nbytes
= nbytes
+ 1;
5357 p
->decoding_carryover
= 0;
5359 /* At this point, NBYTES holds number of bytes just received
5360 (including the one in proc_buffered_char[channel]). */
5363 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5365 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5368 /* Now set NBYTES how many bytes we must decode. */
5369 nbytes
+= carryover
;
5371 /* Read and dispose of the process output. */
5372 outstream
= p
->filter
;
5373 if (!NILP (outstream
))
5375 /* We inhibit quit here instead of just catching it so that
5376 hitting ^G when a filter happens to be running won't screw
5378 int count
= SPECPDL_INDEX ();
5379 Lisp_Object odeactivate
;
5380 Lisp_Object obuffer
, okeymap
;
5382 int outer_running_asynch_code
= running_asynch_code
;
5383 int waiting
= waiting_for_user_input_p
;
5385 /* No need to gcpro these, because all we do with them later
5386 is test them for EQness, and none of them should be a string. */
5387 odeactivate
= Vdeactivate_mark
;
5388 XSETBUFFER (obuffer
, current_buffer
);
5389 okeymap
= current_buffer
->keymap
;
5391 specbind (Qinhibit_quit
, Qt
);
5392 specbind (Qlast_nonmenu_event
, Qt
);
5394 /* In case we get recursively called,
5395 and we already saved the match data nonrecursively,
5396 save the same match data in safely recursive fashion. */
5397 if (outer_running_asynch_code
)
5400 /* Don't clobber the CURRENT match data, either! */
5401 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5402 restore_search_regs ();
5403 record_unwind_save_match_data ();
5404 Fset_match_data (tem
, Qt
);
5407 /* For speed, if a search happens within this code,
5408 save the match data in a special nonrecursive fashion. */
5409 running_asynch_code
= 1;
5411 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5412 text
= coding
->dst_object
;
5413 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5414 /* A new coding system might be found. */
5415 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5417 p
->decode_coding_system
= Vlast_coding_system_used
;
5419 /* Don't call setup_coding_system for
5420 proc_decode_coding_system[channel] here. It is done in
5421 detect_coding called via decode_coding above. */
5423 /* If a coding system for encoding is not yet decided, we set
5424 it as the same as coding-system for decoding.
5426 But, before doing that we must check if
5427 proc_encode_coding_system[p->outfd] surely points to a
5428 valid memory because p->outfd will be changed once EOF is
5429 sent to the process. */
5430 if (NILP (p
->encode_coding_system
)
5431 && proc_encode_coding_system
[p
->outfd
])
5433 p
->encode_coding_system
5434 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5435 setup_coding_system (p
->encode_coding_system
,
5436 proc_encode_coding_system
[p
->outfd
]);
5440 if (coding
->carryover_bytes
> 0)
5442 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5443 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5444 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5445 coding
->carryover_bytes
);
5446 p
->decoding_carryover
= coding
->carryover_bytes
;
5448 if (SBYTES (text
) > 0)
5449 internal_condition_case_1 (read_process_output_call
,
5451 Fcons (proc
, Fcons (text
, Qnil
))),
5452 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5453 read_process_output_error_handler
);
5455 /* If we saved the match data nonrecursively, restore it now. */
5456 restore_search_regs ();
5457 running_asynch_code
= outer_running_asynch_code
;
5459 /* Handling the process output should not deactivate the mark. */
5460 Vdeactivate_mark
= odeactivate
;
5462 /* Restore waiting_for_user_input_p as it was
5463 when we were called, in case the filter clobbered it. */
5464 waiting_for_user_input_p
= waiting
;
5466 #if 0 /* Call record_asynch_buffer_change unconditionally,
5467 because we might have changed minor modes or other things
5468 that affect key bindings. */
5469 if (! EQ (Fcurrent_buffer (), obuffer
)
5470 || ! EQ (current_buffer
->keymap
, okeymap
))
5472 /* But do it only if the caller is actually going to read events.
5473 Otherwise there's no need to make him wake up, and it could
5474 cause trouble (for example it would make sit_for return). */
5475 if (waiting_for_user_input_p
== -1)
5476 record_asynch_buffer_change ();
5478 unbind_to (count
, Qnil
);
5482 /* If no filter, write into buffer if it isn't dead. */
5483 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5485 Lisp_Object old_read_only
;
5486 int old_begv
, old_zv
;
5487 int old_begv_byte
, old_zv_byte
;
5488 Lisp_Object odeactivate
;
5489 int before
, before_byte
;
5493 int count
= SPECPDL_INDEX ();
5495 odeactivate
= Vdeactivate_mark
;
5497 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
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
));
5595 /* Handling the process output should not deactivate the mark. */
5596 Vdeactivate_mark
= odeactivate
;
5598 current_buffer
->read_only
= old_read_only
;
5599 SET_PT_BOTH (opoint
, opoint_byte
);
5600 unbind_to (count
, Qnil
);
5605 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5607 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5608 This is intended for use by asynchronous process output filters and sentinels. */)
5611 return (waiting_for_user_input_p
? Qt
: Qnil
);
5614 /* Sending data to subprocess */
5616 jmp_buf send_process_frame
;
5617 Lisp_Object process_sent_to
;
5620 send_process_trap ()
5622 SIGNAL_THREAD_CHECK (SIGPIPE
);
5623 sigunblock (sigmask (SIGPIPE
));
5624 longjmp (send_process_frame
, 1);
5627 /* Send some data to process PROC.
5628 BUF is the beginning of the data; LEN is the number of characters.
5629 OBJECT is the Lisp object that the data comes from. If OBJECT is
5630 nil or t, it means that the data comes from C string.
5632 If OBJECT is not nil, the data is encoded by PROC's coding-system
5633 for encoding before it is sent.
5635 This function can evaluate Lisp code and can garbage collect. */
5638 send_process (proc
, buf
, len
, object
)
5639 volatile Lisp_Object proc
;
5640 unsigned char *volatile buf
;
5642 volatile Lisp_Object object
;
5644 /* Use volatile to protect variables from being clobbered by longjmp. */
5645 struct Lisp_Process
*p
= XPROCESS (proc
);
5647 struct coding_system
*coding
;
5648 struct gcpro gcpro1
;
5649 SIGTYPE (*volatile old_sigpipe
) ();
5653 if (p
->raw_status_new
)
5655 if (! EQ (p
->status
, Qrun
))
5656 error ("Process %s not running", SDATA (p
->name
));
5658 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5660 coding
= proc_encode_coding_system
[p
->outfd
];
5661 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5663 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5664 || (BUFFERP (object
)
5665 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5668 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5669 /* The coding system for encoding was changed to raw-text
5670 because we sent a unibyte text previously. Now we are
5671 sending a multibyte text, thus we must encode it by the
5672 original coding system specified for the current process. */
5673 setup_coding_system (p
->encode_coding_system
, coding
);
5674 coding
->src_multibyte
= 1;
5678 /* For sending a unibyte text, character code conversion should
5679 not take place but EOL conversion should. So, setup raw-text
5680 or one of the subsidiary if we have not yet done it. */
5681 if (CODING_REQUIRE_ENCODING (coding
))
5683 if (CODING_REQUIRE_FLUSHING (coding
))
5685 /* But, before changing the coding, we must flush out data. */
5686 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5687 send_process (proc
, "", 0, Qt
);
5688 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5690 setup_coding_system (raw_text_coding_system
5691 (Vlast_coding_system_used
),
5693 coding
->src_multibyte
= 0;
5696 coding
->dst_multibyte
= 0;
5698 if (CODING_REQUIRE_ENCODING (coding
))
5700 coding
->dst_object
= Qt
;
5701 if (BUFFERP (object
))
5703 int from_byte
, from
, to
;
5704 int save_pt
, save_pt_byte
;
5705 struct buffer
*cur
= current_buffer
;
5707 set_buffer_internal (XBUFFER (object
));
5708 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5710 from_byte
= PTR_BYTE_POS (buf
);
5711 from
= BYTE_TO_CHAR (from_byte
);
5712 to
= BYTE_TO_CHAR (from_byte
+ len
);
5713 TEMP_SET_PT_BOTH (from
, from_byte
);
5714 encode_coding_object (coding
, object
, from
, from_byte
,
5715 to
, from_byte
+ len
, Qt
);
5716 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5717 set_buffer_internal (cur
);
5719 else if (STRINGP (object
))
5721 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5722 SBYTES (object
), Qt
);
5726 coding
->dst_object
= make_unibyte_string (buf
, len
);
5727 coding
->produced
= len
;
5730 len
= coding
->produced
;
5731 object
= coding
->dst_object
;
5732 buf
= SDATA (object
);
5735 if (pty_max_bytes
== 0)
5737 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5738 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5739 if (pty_max_bytes
< 0)
5740 pty_max_bytes
= 250;
5742 pty_max_bytes
= 250;
5744 /* Deduct one, to leave space for the eof. */
5748 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5749 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5750 when returning with longjmp despite being declared volatile. */
5751 if (!setjmp (send_process_frame
))
5753 process_sent_to
= proc
;
5758 /* Decide how much data we can send in one batch.
5759 Long lines need to be split into multiple batches. */
5762 /* Starting this at zero is always correct when not the first
5763 iteration because the previous iteration ended by sending C-d.
5764 It may not be correct for the first iteration
5765 if a partial line was sent in a separate send_process call.
5766 If that proves worth handling, we need to save linepos
5767 in the process object. */
5769 unsigned char *ptr
= (unsigned char *) buf
;
5770 unsigned char *end
= (unsigned char *) buf
+ len
;
5772 /* Scan through this text for a line that is too long. */
5773 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5781 /* If we found one, break the line there
5782 and put in a C-d to force the buffer through. */
5786 /* Send this batch, using one or more write calls. */
5789 int outfd
= p
->outfd
;
5790 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5791 #ifdef DATAGRAM_SOCKETS
5792 if (DATAGRAM_CHAN_P (outfd
))
5794 rv
= sendto (outfd
, (char *) buf
, this,
5795 0, datagram_address
[outfd
].sa
,
5796 datagram_address
[outfd
].len
);
5797 if (rv
< 0 && errno
== EMSGSIZE
)
5799 signal (SIGPIPE
, old_sigpipe
);
5800 report_file_error ("sending datagram",
5801 Fcons (proc
, Qnil
));
5807 rv
= emacs_write (outfd
, (char *) buf
, this);
5808 #ifdef ADAPTIVE_READ_BUFFERING
5809 if (p
->read_output_delay
> 0
5810 && p
->adaptive_read_buffering
== 1)
5812 p
->read_output_delay
= 0;
5813 process_output_delay_count
--;
5814 p
->read_output_skip
= 0;
5818 signal (SIGPIPE
, old_sigpipe
);
5824 || errno
== EWOULDBLOCK
5830 /* Buffer is full. Wait, accepting input;
5831 that may allow the program
5832 to finish doing output and read more. */
5836 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5837 /* A gross hack to work around a bug in FreeBSD.
5838 In the following sequence, read(2) returns
5842 write(2) 954 bytes, get EAGAIN
5843 read(2) 1024 bytes in process_read_output
5844 read(2) 11 bytes in process_read_output
5846 That is, read(2) returns more bytes than have
5847 ever been written successfully. The 1033 bytes
5848 read are the 1022 bytes written successfully
5849 after processing (for example with CRs added if
5850 the terminal is set up that way which it is
5851 here). The same bytes will be seen again in a
5852 later read(2), without the CRs. */
5854 if (errno
== EAGAIN
)
5857 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5859 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5861 /* Running filters might relocate buffers or strings.
5862 Arrange to relocate BUF. */
5863 if (BUFFERP (object
))
5864 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5865 else if (STRINGP (object
))
5866 offset
= buf
- SDATA (object
);
5868 #ifdef EMACS_HAS_USECS
5869 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5871 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5874 if (BUFFERP (object
))
5875 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5876 else if (STRINGP (object
))
5877 buf
= offset
+ SDATA (object
);
5882 /* This is a real error. */
5883 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5890 /* If we sent just part of the string, put in an EOF (C-d)
5891 to force it through, before we send the rest. */
5893 Fprocess_send_eof (proc
);
5898 signal (SIGPIPE
, old_sigpipe
);
5899 proc
= process_sent_to
;
5900 p
= XPROCESS (proc
);
5901 p
->raw_status_new
= 0;
5902 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5903 p
->tick
= ++process_tick
;
5904 deactivate_process (proc
);
5905 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5911 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5913 doc
: /* Send current contents of region as input to PROCESS.
5914 PROCESS may be a process, a buffer, the name of a process or buffer, or
5915 nil, indicating the current buffer's process.
5916 Called from program, takes three arguments, PROCESS, START and END.
5917 If the region is more than 500 characters long,
5918 it is sent in several bunches. This may happen even for shorter regions.
5919 Output from processes can arrive in between bunches. */)
5920 (process
, start
, end
)
5921 Lisp_Object process
, start
, end
;
5926 proc
= get_process (process
);
5927 validate_region (&start
, &end
);
5929 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5930 move_gap (XINT (start
));
5932 start1
= CHAR_TO_BYTE (XINT (start
));
5933 end1
= CHAR_TO_BYTE (XINT (end
));
5934 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5935 Fcurrent_buffer ());
5940 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5942 doc
: /* Send PROCESS the contents of STRING as input.
5943 PROCESS may be a process, a buffer, the name of a process or buffer, or
5944 nil, indicating the current buffer's process.
5945 If STRING is more than 500 characters long,
5946 it is sent in several bunches. This may happen even for shorter strings.
5947 Output from processes can arrive in between bunches. */)
5949 Lisp_Object process
, string
;
5952 CHECK_STRING (string
);
5953 proc
= get_process (process
);
5954 send_process (proc
, SDATA (string
),
5955 SBYTES (string
), string
);
5959 /* Return the foreground process group for the tty/pty that
5960 the process P uses. */
5962 emacs_get_tty_pgrp (p
)
5963 struct Lisp_Process
*p
;
5968 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5971 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5972 master side. Try the slave side. */
5973 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
5977 ioctl (fd
, TIOCGPGRP
, &gid
);
5981 #endif /* defined (TIOCGPGRP ) */
5986 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5987 Sprocess_running_child_p
, 0, 1, 0,
5988 doc
: /* Return t if PROCESS has given the terminal to a child.
5989 If the operating system does not make it possible to find out,
5990 return t unconditionally. */)
5992 Lisp_Object process
;
5994 /* Initialize in case ioctl doesn't exist or gives an error,
5995 in a way that will cause returning t. */
5998 struct Lisp_Process
*p
;
6000 proc
= get_process (process
);
6001 p
= XPROCESS (proc
);
6003 if (!EQ (p
->type
, Qreal
))
6004 error ("Process %s is not a subprocess",
6007 error ("Process %s is not active",
6010 gid
= emacs_get_tty_pgrp (p
);
6017 /* send a signal number SIGNO to PROCESS.
6018 If CURRENT_GROUP is t, that means send to the process group
6019 that currently owns the terminal being used to communicate with PROCESS.
6020 This is used for various commands in shell mode.
6021 If CURRENT_GROUP is lambda, that means send to the process group
6022 that currently owns the terminal, but only if it is NOT the shell itself.
6024 If NOMSG is zero, insert signal-announcements into process's buffers
6027 If we can, we try to signal PROCESS by sending control characters
6028 down the pty. This allows us to signal inferiors who have changed
6029 their uid, for which killpg would return an EPERM error. */
6032 process_send_signal (process
, signo
, current_group
, nomsg
)
6033 Lisp_Object process
;
6035 Lisp_Object current_group
;
6039 register struct Lisp_Process
*p
;
6043 proc
= get_process (process
);
6044 p
= XPROCESS (proc
);
6046 if (!EQ (p
->type
, Qreal
))
6047 error ("Process %s is not a subprocess",
6050 error ("Process %s is not active",
6054 current_group
= Qnil
;
6056 /* If we are using pgrps, get a pgrp number and make it negative. */
6057 if (NILP (current_group
))
6058 /* Send the signal to the shell's process group. */
6062 #ifdef SIGNALS_VIA_CHARACTERS
6063 /* If possible, send signals to the entire pgrp
6064 by sending an input character to it. */
6066 /* TERMIOS is the latest and bestest, and seems most likely to
6067 work. If the system has it, use it. */
6070 cc_t
*sig_char
= NULL
;
6072 tcgetattr (p
->infd
, &t
);
6077 sig_char
= &t
.c_cc
[VINTR
];
6081 sig_char
= &t
.c_cc
[VQUIT
];
6085 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6086 sig_char
= &t
.c_cc
[VSWTCH
];
6088 sig_char
= &t
.c_cc
[VSUSP
];
6093 if (sig_char
&& *sig_char
!= CDISABLE
)
6095 send_process (proc
, sig_char
, 1, Qnil
);
6098 /* If we can't send the signal with a character,
6099 fall through and send it another way. */
6100 #else /* ! HAVE_TERMIOS */
6102 /* On Berkeley descendants, the following IOCTL's retrieve the
6103 current control characters. */
6104 #if defined (TIOCGLTC) && defined (TIOCGETC)
6112 ioctl (p
->infd
, TIOCGETC
, &c
);
6113 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
6116 ioctl (p
->infd
, TIOCGETC
, &c
);
6117 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6121 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6122 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6124 #endif /* ! defined (SIGTSTP) */
6127 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6129 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6136 ioctl (p
->infd
, TCGETA
, &t
);
6137 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6140 ioctl (p
->infd
, TCGETA
, &t
);
6141 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6145 ioctl (p
->infd
, TCGETA
, &t
);
6146 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6148 #endif /* ! defined (SIGTSTP) */
6150 #else /* ! defined (TCGETA) */
6151 Your configuration files are messed up
.
6152 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6153 you'd better be using one of the alternatives above! */
6154 #endif /* ! defined (TCGETA) */
6155 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6156 /* In this case, the code above should alway return. */
6158 #endif /* ! defined HAVE_TERMIOS */
6160 /* The code above may fall through if it can't
6161 handle the signal. */
6162 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6165 /* Get the current pgrp using the tty itself, if we have that.
6166 Otherwise, use the pty to get the pgrp.
6167 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6168 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6169 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6170 His patch indicates that if TIOCGPGRP returns an error, then
6171 we should just assume that p->pid is also the process group id. */
6173 gid
= emacs_get_tty_pgrp (p
);
6176 /* If we can't get the information, assume
6177 the shell owns the tty. */
6180 /* It is not clear whether anything really can set GID to -1.
6181 Perhaps on some system one of those ioctls can or could do so.
6182 Or perhaps this is vestigial. */
6185 #else /* ! defined (TIOCGPGRP ) */
6186 /* Can't select pgrps on this system, so we know that
6187 the child itself heads the pgrp. */
6189 #endif /* ! defined (TIOCGPGRP ) */
6191 /* If current_group is lambda, and the shell owns the terminal,
6192 don't send any signal. */
6193 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6201 p
->raw_status_new
= 0;
6203 p
->tick
= ++process_tick
;
6206 status_notify (NULL
);
6207 redisplay_preserve_echo_area (13);
6210 #endif /* ! defined (SIGCONT) */
6214 flush_pending_output (p
->infd
);
6218 /* If we don't have process groups, send the signal to the immediate
6219 subprocess. That isn't really right, but it's better than any
6220 obvious alternative. */
6223 kill (p
->pid
, signo
);
6227 /* gid may be a pid, or minus a pgrp's number */
6229 if (!NILP (current_group
))
6231 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6232 EMACS_KILLPG (gid
, signo
);
6239 #else /* ! defined (TIOCSIGSEND) */
6240 EMACS_KILLPG (gid
, signo
);
6241 #endif /* ! defined (TIOCSIGSEND) */
6244 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6245 doc
: /* Interrupt process PROCESS.
6246 PROCESS may be a process, a buffer, or the name of a process or buffer.
6247 No arg or nil means current buffer's process.
6248 Second arg CURRENT-GROUP non-nil means send signal to
6249 the current process-group of the process's controlling terminal
6250 rather than to the process's own process group.
6251 If the process is a shell, this means interrupt current subjob
6252 rather than the shell.
6254 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6255 don't send the signal. */)
6256 (process
, current_group
)
6257 Lisp_Object process
, current_group
;
6259 process_send_signal (process
, SIGINT
, current_group
, 0);
6263 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6264 doc
: /* Kill process PROCESS. May be process or name of one.
6265 See function `interrupt-process' for more details on usage. */)
6266 (process
, current_group
)
6267 Lisp_Object process
, current_group
;
6269 process_send_signal (process
, SIGKILL
, current_group
, 0);
6273 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6274 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6275 See function `interrupt-process' for more details on usage. */)
6276 (process
, current_group
)
6277 Lisp_Object process
, current_group
;
6279 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6283 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6284 doc
: /* Stop 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, inhibit 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 (NILP (p
->command
)
6300 FD_CLR (p
->infd
, &input_wait_mask
);
6301 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6308 error ("No SIGTSTP support");
6310 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6315 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6316 doc
: /* Continue process PROCESS. May be process or name of one.
6317 See function `interrupt-process' for more details on usage.
6318 If PROCESS is a network or serial process, resume handling of incoming
6320 (process
, current_group
)
6321 Lisp_Object process
, current_group
;
6324 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6326 struct Lisp_Process
*p
;
6328 p
= XPROCESS (process
);
6329 if (EQ (p
->command
, Qt
)
6331 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6333 FD_SET (p
->infd
, &input_wait_mask
);
6334 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6336 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6337 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6340 tcflush (p
->infd
, TCIFLUSH
);
6348 process_send_signal (process
, SIGCONT
, current_group
, 0);
6350 error ("No SIGCONT support");
6355 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6356 2, 2, "sProcess (name or number): \nnSignal code: ",
6357 doc
: /* Send PROCESS the signal with code SIGCODE.
6358 PROCESS may also be a number specifying the process id of the
6359 process to signal; in this case, the process need not be a child of
6361 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6363 Lisp_Object process
, sigcode
;
6367 if (INTEGERP (process
))
6369 pid
= XINT (process
);
6373 if (FLOATP (process
))
6375 pid
= (pid_t
) XFLOAT_DATA (process
);
6379 if (STRINGP (process
))
6382 if (tem
= Fget_process (process
), NILP (tem
))
6384 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6391 process
= get_process (process
);
6396 CHECK_PROCESS (process
);
6397 pid
= XPROCESS (process
)->pid
;
6399 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6403 #define parse_signal(NAME, VALUE) \
6404 else if (!xstrcasecmp (name, NAME)) \
6405 XSETINT (sigcode, VALUE)
6407 if (INTEGERP (sigcode
))
6411 unsigned char *name
;
6413 CHECK_SYMBOL (sigcode
);
6414 name
= SDATA (SYMBOL_NAME (sigcode
));
6416 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6422 parse_signal ("usr1", SIGUSR1
);
6425 parse_signal ("usr2", SIGUSR2
);
6428 parse_signal ("term", SIGTERM
);
6431 parse_signal ("hup", SIGHUP
);
6434 parse_signal ("int", SIGINT
);
6437 parse_signal ("quit", SIGQUIT
);
6440 parse_signal ("ill", SIGILL
);
6443 parse_signal ("abrt", SIGABRT
);
6446 parse_signal ("emt", SIGEMT
);
6449 parse_signal ("kill", SIGKILL
);
6452 parse_signal ("fpe", SIGFPE
);
6455 parse_signal ("bus", SIGBUS
);
6458 parse_signal ("segv", SIGSEGV
);
6461 parse_signal ("sys", SIGSYS
);
6464 parse_signal ("pipe", SIGPIPE
);
6467 parse_signal ("alrm", SIGALRM
);
6470 parse_signal ("urg", SIGURG
);
6473 parse_signal ("stop", SIGSTOP
);
6476 parse_signal ("tstp", SIGTSTP
);
6479 parse_signal ("cont", SIGCONT
);
6482 parse_signal ("chld", SIGCHLD
);
6485 parse_signal ("ttin", SIGTTIN
);
6488 parse_signal ("ttou", SIGTTOU
);
6491 parse_signal ("io", SIGIO
);
6494 parse_signal ("xcpu", SIGXCPU
);
6497 parse_signal ("xfsz", SIGXFSZ
);
6500 parse_signal ("vtalrm", SIGVTALRM
);
6503 parse_signal ("prof", SIGPROF
);
6506 parse_signal ("winch", SIGWINCH
);
6509 parse_signal ("info", SIGINFO
);
6512 error ("Undefined signal name %s", name
);
6517 return make_number (kill (pid
, XINT (sigcode
)));
6520 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6521 doc
: /* Make PROCESS see end-of-file in its input.
6522 EOF comes after any text already sent to it.
6523 PROCESS may be a process, a buffer, the name of a process or buffer, or
6524 nil, indicating the current buffer's process.
6525 If PROCESS is a network connection, or is a process communicating
6526 through a pipe (as opposed to a pty), then you cannot send any more
6527 text to PROCESS after you call this function.
6528 If PROCESS is a serial process, wait until all output written to the
6529 process has been transmitted to the serial port. */)
6531 Lisp_Object process
;
6534 struct coding_system
*coding
;
6536 if (DATAGRAM_CONN_P (process
))
6539 proc
= get_process (process
);
6540 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6542 /* Make sure the process is really alive. */
6543 if (XPROCESS (proc
)->raw_status_new
)
6544 update_status (XPROCESS (proc
));
6545 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6546 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6548 if (CODING_REQUIRE_FLUSHING (coding
))
6550 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6551 send_process (proc
, "", 0, Qnil
);
6554 if (XPROCESS (proc
)->pty_flag
)
6555 send_process (proc
, "\004", 1, Qnil
);
6556 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6559 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6560 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6562 /* Do nothing on Windows because writes are blocking. */
6566 int old_outfd
, new_outfd
;
6568 #ifdef HAVE_SHUTDOWN
6569 /* If this is a network connection, or socketpair is used
6570 for communication with the subprocess, call shutdown to cause EOF.
6571 (In some old system, shutdown to socketpair doesn't work.
6572 Then we just can't win.) */
6573 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6574 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6575 shutdown (XPROCESS (proc
)->outfd
, 1);
6576 /* In case of socketpair, outfd == infd, so don't close it. */
6577 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6578 emacs_close (XPROCESS (proc
)->outfd
);
6579 #else /* not HAVE_SHUTDOWN */
6580 emacs_close (XPROCESS (proc
)->outfd
);
6581 #endif /* not HAVE_SHUTDOWN */
6582 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6585 old_outfd
= XPROCESS (proc
)->outfd
;
6587 if (!proc_encode_coding_system
[new_outfd
])
6588 proc_encode_coding_system
[new_outfd
]
6589 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6590 bcopy (proc_encode_coding_system
[old_outfd
],
6591 proc_encode_coding_system
[new_outfd
],
6592 sizeof (struct coding_system
));
6593 bzero (proc_encode_coding_system
[old_outfd
],
6594 sizeof (struct coding_system
));
6596 XPROCESS (proc
)->outfd
= new_outfd
;
6601 /* Kill all processes associated with `buffer'.
6602 If `buffer' is nil, kill all processes */
6605 kill_buffer_processes (buffer
)
6608 Lisp_Object tail
, proc
;
6610 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6612 proc
= XCDR (XCAR (tail
));
6614 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6616 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6617 Fdelete_process (proc
);
6618 else if (XPROCESS (proc
)->infd
>= 0)
6619 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6624 /* On receipt of a signal that a child status has changed, loop asking
6625 about children with changed statuses until the system says there
6628 All we do is change the status; we do not run sentinels or print
6629 notifications. That is saved for the next time keyboard input is
6630 done, in order to avoid timing errors.
6632 ** WARNING: this can be called during garbage collection.
6633 Therefore, it must not be fooled by the presence of mark bits in
6636 ** USG WARNING: Although it is not obvious from the documentation
6637 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6638 signal() before executing at least one wait(), otherwise the
6639 handler will be called again, resulting in an infinite loop. The
6640 relevant portion of the documentation reads "SIGCLD signals will be
6641 queued and the signal-catching function will be continually
6642 reentered until the queue is empty". Invoking signal() causes the
6643 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6646 ** Malloc WARNING: This should never call malloc either directly or
6647 indirectly; if it does, that is a bug */
6651 sigchld_handler (signo
)
6654 int old_errno
= errno
;
6656 register struct Lisp_Process
*p
;
6657 extern EMACS_TIME
*input_available_clear_time
;
6659 SIGNAL_THREAD_CHECK (signo
);
6670 #endif /* no WUNTRACED */
6671 /* Keep trying to get a status until we get a definitive result. */
6675 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6677 while (pid
< 0 && errno
== EINTR
);
6681 /* PID == 0 means no processes found, PID == -1 means a real
6682 failure. We have done all our job, so return. */
6689 #endif /* no WNOHANG */
6691 /* Find the process that signaled us, and record its status. */
6693 /* The process can have been deleted by Fdelete_process. */
6694 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6696 Lisp_Object xpid
= XCAR (tail
);
6697 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6698 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6700 XSETCAR (tail
, Qnil
);
6701 goto sigchld_end_of_loop
;
6705 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6707 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6709 proc
= XCDR (XCAR (tail
));
6710 p
= XPROCESS (proc
);
6711 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6716 /* Look for an asynchronous process whose pid hasn't been filled
6719 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6721 proc
= XCDR (XCAR (tail
));
6722 p
= XPROCESS (proc
);
6728 /* Change the status of the process that was found. */
6731 int clear_desc_flag
= 0;
6733 p
->tick
= ++process_tick
;
6735 p
->raw_status_new
= 1;
6737 /* If process has terminated, stop waiting for its output. */
6738 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6740 clear_desc_flag
= 1;
6742 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6743 if (clear_desc_flag
)
6745 FD_CLR (p
->infd
, &input_wait_mask
);
6746 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6749 /* Tell wait_reading_process_output that it needs to wake up and
6751 if (input_available_clear_time
)
6752 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6755 /* There was no asynchronous process found for that pid: we have
6756 a synchronous process. */
6759 synch_process_alive
= 0;
6761 /* Report the status of the synchronous process. */
6763 synch_process_retcode
= WRETCODE (w
);
6764 else if (WIFSIGNALED (w
))
6765 synch_process_termsig
= WTERMSIG (w
);
6767 /* Tell wait_reading_process_output that it needs to wake up and
6769 if (input_available_clear_time
)
6770 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6773 sigchld_end_of_loop
:
6776 /* On some systems, we must return right away.
6777 If any more processes want to signal us, we will
6779 Otherwise (on systems that have WNOHANG), loop around
6780 to use up all the processes that have something to tell us. */
6781 #if (defined WINDOWSNT \
6782 || (defined USG && !defined GNU_LINUX \
6783 && !(defined HPUX && defined WNOHANG)))
6786 #endif /* USG, but not HPUX with WNOHANG */
6789 #endif /* SIGCHLD */
6793 exec_sentinel_unwind (data
)
6796 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6801 exec_sentinel_error_handler (error
)
6804 cmd_error_internal (error
, "error in process sentinel: ");
6806 update_echo_area ();
6807 Fsleep_for (make_number (2), Qnil
);
6812 exec_sentinel (proc
, reason
)
6813 Lisp_Object proc
, reason
;
6815 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6816 register struct Lisp_Process
*p
= XPROCESS (proc
);
6817 int count
= SPECPDL_INDEX ();
6818 int outer_running_asynch_code
= running_asynch_code
;
6819 int waiting
= waiting_for_user_input_p
;
6821 if (inhibit_sentinels
)
6824 /* No need to gcpro these, because all we do with them later
6825 is test them for EQness, and none of them should be a string. */
6826 odeactivate
= Vdeactivate_mark
;
6827 XSETBUFFER (obuffer
, current_buffer
);
6828 okeymap
= current_buffer
->keymap
;
6830 sentinel
= p
->sentinel
;
6831 if (NILP (sentinel
))
6834 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6835 assure that it gets restored no matter how the sentinel exits. */
6837 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6838 /* Inhibit quit so that random quits don't screw up a running filter. */
6839 specbind (Qinhibit_quit
, Qt
);
6840 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6842 /* In case we get recursively called,
6843 and we already saved the match data nonrecursively,
6844 save the same match data in safely recursive fashion. */
6845 if (outer_running_asynch_code
)
6848 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6849 restore_search_regs ();
6850 record_unwind_save_match_data ();
6851 Fset_match_data (tem
, Qt
);
6854 /* For speed, if a search happens within this code,
6855 save the match data in a special nonrecursive fashion. */
6856 running_asynch_code
= 1;
6858 internal_condition_case_1 (read_process_output_call
,
6860 Fcons (proc
, Fcons (reason
, Qnil
))),
6861 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6862 exec_sentinel_error_handler
);
6864 /* If we saved the match data nonrecursively, restore it now. */
6865 restore_search_regs ();
6866 running_asynch_code
= outer_running_asynch_code
;
6868 Vdeactivate_mark
= odeactivate
;
6870 /* Restore waiting_for_user_input_p as it was
6871 when we were called, in case the filter clobbered it. */
6872 waiting_for_user_input_p
= waiting
;
6875 if (! EQ (Fcurrent_buffer (), obuffer
)
6876 || ! EQ (current_buffer
->keymap
, okeymap
))
6878 /* But do it only if the caller is actually going to read events.
6879 Otherwise there's no need to make him wake up, and it could
6880 cause trouble (for example it would make sit_for return). */
6881 if (waiting_for_user_input_p
== -1)
6882 record_asynch_buffer_change ();
6884 unbind_to (count
, Qnil
);
6887 /* Report all recent events of a change in process status
6888 (either run the sentinel or output a message).
6889 This is usually done while Emacs is waiting for keyboard input
6890 but can be done at other times. */
6893 status_notify (deleting_process
)
6894 struct Lisp_Process
*deleting_process
;
6896 register Lisp_Object proc
, buffer
;
6897 Lisp_Object tail
, msg
;
6898 struct gcpro gcpro1
, gcpro2
;
6902 /* We need to gcpro tail; if read_process_output calls a filter
6903 which deletes a process and removes the cons to which tail points
6904 from Vprocess_alist, and then causes a GC, tail is an unprotected
6908 /* Set this now, so that if new processes are created by sentinels
6909 that we run, we get called again to handle their status changes. */
6910 update_tick
= process_tick
;
6912 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6915 register struct Lisp_Process
*p
;
6917 proc
= Fcdr (XCAR (tail
));
6918 p
= XPROCESS (proc
);
6920 if (p
->tick
!= p
->update_tick
)
6922 p
->update_tick
= p
->tick
;
6924 /* If process is still active, read any output that remains. */
6925 while (! EQ (p
->filter
, Qt
)
6926 && ! EQ (p
->status
, Qconnect
)
6927 && ! EQ (p
->status
, Qlisten
)
6928 /* Network or serial process not stopped: */
6929 && ! EQ (p
->command
, Qt
)
6931 && p
!= deleting_process
6932 && read_process_output (proc
, p
->infd
) > 0);
6936 /* Get the text to use for the message. */
6937 if (p
->raw_status_new
)
6939 msg
= status_message (p
);
6941 /* If process is terminated, deactivate it or delete it. */
6943 if (CONSP (p
->status
))
6944 symbol
= XCAR (p
->status
);
6946 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6947 || EQ (symbol
, Qclosed
))
6949 if (delete_exited_processes
)
6950 remove_process (proc
);
6952 deactivate_process (proc
);
6955 /* The actions above may have further incremented p->tick.
6956 So set p->update_tick again
6957 so that an error in the sentinel will not cause
6958 this code to be run again. */
6959 p
->update_tick
= p
->tick
;
6960 /* Now output the message suitably. */
6961 if (!NILP (p
->sentinel
))
6962 exec_sentinel (proc
, msg
);
6963 /* Don't bother with a message in the buffer
6964 when a process becomes runnable. */
6965 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6967 Lisp_Object ro
, tem
;
6968 struct buffer
*old
= current_buffer
;
6969 int opoint
, opoint_byte
;
6970 int before
, before_byte
;
6972 ro
= XBUFFER (buffer
)->read_only
;
6974 /* Avoid error if buffer is deleted
6975 (probably that's why the process is dead, too) */
6976 if (NILP (XBUFFER (buffer
)->name
))
6978 Fset_buffer (buffer
);
6981 opoint_byte
= PT_BYTE
;
6982 /* Insert new output into buffer
6983 at the current end-of-output marker,
6984 thus preserving logical ordering of input and output. */
6985 if (XMARKER (p
->mark
)->buffer
)
6986 Fgoto_char (p
->mark
);
6988 SET_PT_BOTH (ZV
, ZV_BYTE
);
6991 before_byte
= PT_BYTE
;
6993 tem
= current_buffer
->read_only
;
6994 current_buffer
->read_only
= Qnil
;
6995 insert_string ("\nProcess ");
6996 Finsert (1, &p
->name
);
6997 insert_string (" ");
6999 current_buffer
->read_only
= tem
;
7000 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7002 if (opoint
>= before
)
7003 SET_PT_BOTH (opoint
+ (PT
- before
),
7004 opoint_byte
+ (PT_BYTE
- before_byte
));
7006 SET_PT_BOTH (opoint
, opoint_byte
);
7008 set_buffer_internal (old
);
7013 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
7018 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7019 Sset_process_coding_system
, 1, 3, 0,
7020 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7021 DECODING will be used to decode subprocess output and ENCODING to
7022 encode subprocess input. */)
7023 (process
, decoding
, encoding
)
7024 register Lisp_Object process
, decoding
, encoding
;
7026 register struct Lisp_Process
*p
;
7028 CHECK_PROCESS (process
);
7029 p
= XPROCESS (process
);
7031 error ("Input file descriptor of %s closed", SDATA (p
->name
));
7033 error ("Output file descriptor of %s closed", SDATA (p
->name
));
7034 Fcheck_coding_system (decoding
);
7035 Fcheck_coding_system (encoding
);
7036 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7037 p
->decode_coding_system
= decoding
;
7038 p
->encode_coding_system
= encoding
;
7039 setup_process_coding_systems (process
);
7044 DEFUN ("process-coding-system",
7045 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7046 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7048 register Lisp_Object process
;
7050 CHECK_PROCESS (process
);
7051 return Fcons (XPROCESS (process
)->decode_coding_system
,
7052 XPROCESS (process
)->encode_coding_system
);
7055 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7056 Sset_process_filter_multibyte
, 2, 2, 0,
7057 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7058 If FLAG is non-nil, the filter is given multibyte strings.
7059 If FLAG is nil, the filter is given unibyte strings. In this case,
7060 all character code conversion except for end-of-line conversion is
7063 Lisp_Object process
, flag
;
7065 register struct Lisp_Process
*p
;
7067 CHECK_PROCESS (process
);
7068 p
= XPROCESS (process
);
7070 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
7071 setup_process_coding_systems (process
);
7076 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7077 Sprocess_filter_multibyte_p
, 1, 1, 0,
7078 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7080 Lisp_Object process
;
7082 register struct Lisp_Process
*p
;
7083 struct coding_system
*coding
;
7085 CHECK_PROCESS (process
);
7086 p
= XPROCESS (process
);
7087 coding
= proc_decode_coding_system
[p
->infd
];
7088 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7093 /* Add DESC to the set of keyboard input descriptors. */
7096 add_keyboard_wait_descriptor (desc
)
7099 FD_SET (desc
, &input_wait_mask
);
7100 FD_SET (desc
, &non_process_wait_mask
);
7101 if (desc
> max_keyboard_desc
)
7102 max_keyboard_desc
= desc
;
7105 static int add_gpm_wait_descriptor_called_flag
;
7108 add_gpm_wait_descriptor (desc
)
7111 if (! add_gpm_wait_descriptor_called_flag
)
7112 FD_CLR (0, &input_wait_mask
);
7113 add_gpm_wait_descriptor_called_flag
= 1;
7114 FD_SET (desc
, &input_wait_mask
);
7115 FD_SET (desc
, &gpm_wait_mask
);
7116 if (desc
> max_gpm_desc
)
7117 max_gpm_desc
= desc
;
7120 /* From now on, do not expect DESC to give keyboard input. */
7123 delete_keyboard_wait_descriptor (desc
)
7127 int lim
= max_keyboard_desc
;
7129 FD_CLR (desc
, &input_wait_mask
);
7130 FD_CLR (desc
, &non_process_wait_mask
);
7132 if (desc
== max_keyboard_desc
)
7133 for (fd
= 0; fd
< lim
; fd
++)
7134 if (FD_ISSET (fd
, &input_wait_mask
)
7135 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7136 && !FD_ISSET (fd
, &gpm_wait_mask
))
7137 max_keyboard_desc
= fd
;
7141 delete_gpm_wait_descriptor (desc
)
7145 int lim
= max_gpm_desc
;
7147 FD_CLR (desc
, &input_wait_mask
);
7148 FD_CLR (desc
, &non_process_wait_mask
);
7150 if (desc
== max_gpm_desc
)
7151 for (fd
= 0; fd
< lim
; fd
++)
7152 if (FD_ISSET (fd
, &input_wait_mask
)
7153 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7154 && !FD_ISSET (fd
, &non_process_wait_mask
))
7158 /* Return nonzero if *MASK has a bit set
7159 that corresponds to one of the keyboard input descriptors. */
7162 keyboard_bit_set (mask
)
7167 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7168 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7169 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7175 /* Enumeration of and access to system processes a-la ps(1). */
7177 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7179 doc
: /* Return a list of numerical process IDs of all running processes.
7180 If this functionality is unsupported, return nil.
7182 See `process-attributes' for getting attributes of a process given its ID. */)
7185 return list_system_processes ();
7188 DEFUN ("process-attributes", Fprocess_attributes
,
7189 Sprocess_attributes
, 1, 1, 0,
7190 doc
: /* Return attributes of the process given by its PID, a number.
7192 Value is an alist where each element is a cons cell of the form
7196 If this functionality is unsupported, the value is nil.
7198 See `list-system-processes' for getting a list of all process IDs.
7200 The KEYs of the attributes that this function may return are listed
7201 below, together with the type of the associated VALUE (in parentheses).
7202 Not all platforms support all of these attributes; unsupported
7203 attributes will not appear in the returned alist.
7204 Unless explicitly indicated otherwise, numbers can have either
7205 integer or floating point values.
7207 euid -- Effective user User ID of the process (number)
7208 user -- User name corresponding to euid (string)
7209 egid -- Effective user Group ID of the process (number)
7210 group -- Group name corresponding to egid (string)
7211 comm -- Command name (executable name only) (string)
7212 state -- Process state code, such as "S", "R", or "T" (string)
7213 ppid -- Parent process ID (number)
7214 pgrp -- Process group ID (number)
7215 sess -- Session ID, i.e. process ID of session leader (number)
7216 ttname -- Controlling tty name (string)
7217 tpgid -- ID of foreground process group on the process's tty (number)
7218 minflt -- number of minor page faults (number)
7219 majflt -- number of major page faults (number)
7220 cminflt -- cumulative number of minor page faults (number)
7221 cmajflt -- cumulative number of major page faults (number)
7222 utime -- user time used by the process, in the (HIGH LOW USEC) format
7223 stime -- system time used by the process, in the (HIGH LOW USEC) format
7224 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7225 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7226 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7227 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7228 pri -- priority of the process (number)
7229 nice -- nice value of the process (number)
7230 thcount -- process thread count (number)
7231 start -- time the process started, in the (HIGH LOW USEC) format
7232 vsize -- virtual memory size of the process in KB's (number)
7233 rss -- resident set size of the process in KB's (number)
7234 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7235 pcpu -- percents of CPU time used by the process (floating-point number)
7236 pmem -- percents of total physical memory used by process's resident set
7237 (floating-point number)
7238 args -- command line which invoked the process (string). */)
7243 return system_process_attributes (pid
);
7251 inhibit_sentinels
= 0;
7255 if (! noninteractive
|| initialized
)
7257 signal (SIGCHLD
, sigchld_handler
);
7260 FD_ZERO (&input_wait_mask
);
7261 FD_ZERO (&non_keyboard_wait_mask
);
7262 FD_ZERO (&non_process_wait_mask
);
7263 max_process_desc
= 0;
7265 #ifdef NON_BLOCKING_CONNECT
7266 FD_ZERO (&connect_wait_mask
);
7267 num_pending_connects
= 0;
7270 #ifdef ADAPTIVE_READ_BUFFERING
7271 process_output_delay_count
= 0;
7272 process_output_skip
= 0;
7275 /* Don't do this, it caused infinite select loops. The display
7276 method should call add_keyboard_wait_descriptor on stdin if it
7279 FD_SET (0, &input_wait_mask
);
7282 Vprocess_alist
= Qnil
;
7284 deleted_pid_list
= Qnil
;
7286 for (i
= 0; i
< MAXDESC
; i
++)
7288 chan_process
[i
] = Qnil
;
7289 proc_buffered_char
[i
] = -1;
7291 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7292 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7293 #ifdef DATAGRAM_SOCKETS
7294 bzero (datagram_address
, sizeof datagram_address
);
7299 Lisp_Object subfeatures
= Qnil
;
7300 const struct socket_options
*sopt
;
7302 #define ADD_SUBFEATURE(key, val) \
7303 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7305 #ifdef NON_BLOCKING_CONNECT
7306 ADD_SUBFEATURE (QCnowait
, Qt
);
7308 #ifdef DATAGRAM_SOCKETS
7309 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7311 #ifdef HAVE_SEQPACKET
7312 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7314 #ifdef HAVE_LOCAL_SOCKETS
7315 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7317 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7319 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7321 #ifdef HAVE_GETSOCKNAME
7322 ADD_SUBFEATURE (QCservice
, Qt
);
7324 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7325 ADD_SUBFEATURE (QCserver
, Qt
);
7328 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7329 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7331 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7333 #endif /* HAVE_SOCKETS */
7335 #if defined (DARWIN_OS)
7336 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7337 processes. As such, we only change the default value. */
7340 char *release
= get_operating_system_release();
7341 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7342 && release
[1] == '.')) {
7343 Vprocess_connection_type
= Qnil
;
7352 Qprocessp
= intern_c_string ("processp");
7353 staticpro (&Qprocessp
);
7354 Qrun
= intern_c_string ("run");
7356 Qstop
= intern_c_string ("stop");
7358 Qsignal
= intern_c_string ("signal");
7359 staticpro (&Qsignal
);
7361 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7364 Qexit = intern_c_string ("exit");
7365 staticpro (&Qexit); */
7367 Qopen
= intern_c_string ("open");
7369 Qclosed
= intern_c_string ("closed");
7370 staticpro (&Qclosed
);
7371 Qconnect
= intern_c_string ("connect");
7372 staticpro (&Qconnect
);
7373 Qfailed
= intern_c_string ("failed");
7374 staticpro (&Qfailed
);
7375 Qlisten
= intern_c_string ("listen");
7376 staticpro (&Qlisten
);
7377 Qlocal
= intern_c_string ("local");
7378 staticpro (&Qlocal
);
7379 Qipv4
= intern_c_string ("ipv4");
7382 Qipv6
= intern_c_string ("ipv6");
7385 Qdatagram
= intern_c_string ("datagram");
7386 staticpro (&Qdatagram
);
7387 Qseqpacket
= intern_c_string ("seqpacket");
7388 staticpro (&Qseqpacket
);
7390 QCport
= intern_c_string (":port");
7391 staticpro (&QCport
);
7392 QCspeed
= intern_c_string (":speed");
7393 staticpro (&QCspeed
);
7394 QCprocess
= intern_c_string (":process");
7395 staticpro (&QCprocess
);
7397 QCbytesize
= intern_c_string (":bytesize");
7398 staticpro (&QCbytesize
);
7399 QCstopbits
= intern_c_string (":stopbits");
7400 staticpro (&QCstopbits
);
7401 QCparity
= intern_c_string (":parity");
7402 staticpro (&QCparity
);
7403 Qodd
= intern_c_string ("odd");
7405 Qeven
= intern_c_string ("even");
7407 QCflowcontrol
= intern_c_string (":flowcontrol");
7408 staticpro (&QCflowcontrol
);
7409 Qhw
= intern_c_string ("hw");
7411 Qsw
= intern_c_string ("sw");
7413 QCsummary
= intern_c_string (":summary");
7414 staticpro (&QCsummary
);
7416 Qreal
= intern_c_string ("real");
7418 Qnetwork
= intern_c_string ("network");
7419 staticpro (&Qnetwork
);
7420 Qserial
= intern_c_string ("serial");
7421 staticpro (&Qserial
);
7423 QCname
= intern_c_string (":name");
7424 staticpro (&QCname
);
7425 QCbuffer
= intern_c_string (":buffer");
7426 staticpro (&QCbuffer
);
7427 QChost
= intern_c_string (":host");
7428 staticpro (&QChost
);
7429 QCservice
= intern_c_string (":service");
7430 staticpro (&QCservice
);
7431 QCtype
= intern_c_string (":type");
7432 staticpro (&QCtype
);
7433 QClocal
= intern_c_string (":local");
7434 staticpro (&QClocal
);
7435 QCremote
= intern_c_string (":remote");
7436 staticpro (&QCremote
);
7437 QCcoding
= intern_c_string (":coding");
7438 staticpro (&QCcoding
);
7439 QCserver
= intern_c_string (":server");
7440 staticpro (&QCserver
);
7441 QCnowait
= intern_c_string (":nowait");
7442 staticpro (&QCnowait
);
7443 QCsentinel
= intern_c_string (":sentinel");
7444 staticpro (&QCsentinel
);
7445 QClog
= intern_c_string (":log");
7447 QCnoquery
= intern_c_string (":noquery");
7448 staticpro (&QCnoquery
);
7449 QCstop
= intern_c_string (":stop");
7450 staticpro (&QCstop
);
7451 QCoptions
= intern_c_string (":options");
7452 staticpro (&QCoptions
);
7453 QCplist
= intern_c_string (":plist");
7454 staticpro (&QCplist
);
7456 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7457 staticpro (&Qlast_nonmenu_event
);
7459 staticpro (&Vprocess_alist
);
7461 staticpro (&deleted_pid_list
);
7464 Qeuid
= intern_c_string ("euid");
7466 Qegid
= intern_c_string ("egid");
7468 Quser
= intern_c_string ("user");
7470 Qgroup
= intern_c_string ("group");
7471 staticpro (&Qgroup
);
7472 Qcomm
= intern_c_string ("comm");
7474 Qstate
= intern_c_string ("state");
7475 staticpro (&Qstate
);
7476 Qppid
= intern_c_string ("ppid");
7478 Qpgrp
= intern_c_string ("pgrp");
7480 Qsess
= intern_c_string ("sess");
7482 Qttname
= intern_c_string ("ttname");
7483 staticpro (&Qttname
);
7484 Qtpgid
= intern_c_string ("tpgid");
7485 staticpro (&Qtpgid
);
7486 Qminflt
= intern_c_string ("minflt");
7487 staticpro (&Qminflt
);
7488 Qmajflt
= intern_c_string ("majflt");
7489 staticpro (&Qmajflt
);
7490 Qcminflt
= intern_c_string ("cminflt");
7491 staticpro (&Qcminflt
);
7492 Qcmajflt
= intern_c_string ("cmajflt");
7493 staticpro (&Qcmajflt
);
7494 Qutime
= intern_c_string ("utime");
7495 staticpro (&Qutime
);
7496 Qstime
= intern_c_string ("stime");
7497 staticpro (&Qstime
);
7498 Qtime
= intern_c_string ("time");
7500 Qcutime
= intern_c_string ("cutime");
7501 staticpro (&Qcutime
);
7502 Qcstime
= intern_c_string ("cstime");
7503 staticpro (&Qcstime
);
7504 Qctime
= intern_c_string ("ctime");
7505 staticpro (&Qctime
);
7506 Qpri
= intern_c_string ("pri");
7508 Qnice
= intern_c_string ("nice");
7510 Qthcount
= intern_c_string ("thcount");
7511 staticpro (&Qthcount
);
7512 Qstart
= intern_c_string ("start");
7513 staticpro (&Qstart
);
7514 Qvsize
= intern_c_string ("vsize");
7515 staticpro (&Qvsize
);
7516 Qrss
= intern_c_string ("rss");
7518 Qetime
= intern_c_string ("etime");
7519 staticpro (&Qetime
);
7520 Qpcpu
= intern_c_string ("pcpu");
7522 Qpmem
= intern_c_string ("pmem");
7524 Qargs
= intern_c_string ("args");
7527 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7528 doc
: /* *Non-nil means delete processes immediately when they exit.
7529 A value of nil means don't delete them until `list-processes' is run. */);
7531 delete_exited_processes
= 1;
7533 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7534 doc
: /* Control type of device used to communicate with subprocesses.
7535 Values are nil to use a pipe, or t or `pty' to use a pty.
7536 The value has no effect if the system has no ptys or if all ptys are busy:
7537 then a pipe is used in any case.
7538 The value takes effect when `start-process' is called. */);
7539 Vprocess_connection_type
= Qt
;
7541 #ifdef ADAPTIVE_READ_BUFFERING
7542 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7543 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7544 On some systems, when Emacs reads the output from a subprocess, the output data
7545 is read in very small blocks, potentially resulting in very poor performance.
7546 This behavior can be remedied to some extent by setting this variable to a
7547 non-nil value, as it will automatically delay reading from such processes, to
7548 allow them to produce more output before Emacs tries to read it.
7549 If the value is t, the delay is reset after each write to the process; any other
7550 non-nil value means that the delay is not reset on write.
7551 The variable takes effect when `start-process' is called. */);
7552 Vprocess_adaptive_read_buffering
= Qt
;
7555 defsubr (&Sprocessp
);
7556 defsubr (&Sget_process
);
7557 defsubr (&Sget_buffer_process
);
7558 defsubr (&Sdelete_process
);
7559 defsubr (&Sprocess_status
);
7560 defsubr (&Sprocess_exit_status
);
7561 defsubr (&Sprocess_id
);
7562 defsubr (&Sprocess_name
);
7563 defsubr (&Sprocess_tty_name
);
7564 defsubr (&Sprocess_command
);
7565 defsubr (&Sset_process_buffer
);
7566 defsubr (&Sprocess_buffer
);
7567 defsubr (&Sprocess_mark
);
7568 defsubr (&Sset_process_filter
);
7569 defsubr (&Sprocess_filter
);
7570 defsubr (&Sset_process_sentinel
);
7571 defsubr (&Sprocess_sentinel
);
7572 defsubr (&Sset_process_window_size
);
7573 defsubr (&Sset_process_inherit_coding_system_flag
);
7574 defsubr (&Sprocess_inherit_coding_system_flag
);
7575 defsubr (&Sset_process_query_on_exit_flag
);
7576 defsubr (&Sprocess_query_on_exit_flag
);
7577 defsubr (&Sprocess_contact
);
7578 defsubr (&Sprocess_plist
);
7579 defsubr (&Sset_process_plist
);
7580 defsubr (&Slist_processes
);
7581 defsubr (&Sprocess_list
);
7582 defsubr (&Sstart_process
);
7584 defsubr (&Sserial_process_configure
);
7585 defsubr (&Smake_serial_process
);
7586 #endif /* HAVE_SERIAL */
7588 defsubr (&Sset_network_process_option
);
7589 defsubr (&Smake_network_process
);
7590 defsubr (&Sformat_network_address
);
7591 #endif /* HAVE_SOCKETS */
7592 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7594 defsubr (&Snetwork_interface_list
);
7596 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7597 defsubr (&Snetwork_interface_info
);
7599 #endif /* HAVE_SOCKETS ... */
7600 #ifdef DATAGRAM_SOCKETS
7601 defsubr (&Sprocess_datagram_address
);
7602 defsubr (&Sset_process_datagram_address
);
7604 defsubr (&Saccept_process_output
);
7605 defsubr (&Sprocess_send_region
);
7606 defsubr (&Sprocess_send_string
);
7607 defsubr (&Sinterrupt_process
);
7608 defsubr (&Skill_process
);
7609 defsubr (&Squit_process
);
7610 defsubr (&Sstop_process
);
7611 defsubr (&Scontinue_process
);
7612 defsubr (&Sprocess_running_child_p
);
7613 defsubr (&Sprocess_send_eof
);
7614 defsubr (&Ssignal_process
);
7615 defsubr (&Swaiting_for_user_input_p
);
7616 defsubr (&Sprocess_type
);
7617 defsubr (&Sset_process_coding_system
);
7618 defsubr (&Sprocess_coding_system
);
7619 defsubr (&Sset_process_filter_multibyte
);
7620 defsubr (&Sprocess_filter_multibyte_p
);
7621 defsubr (&Slist_system_processes
);
7622 defsubr (&Sprocess_attributes
);
7626 #else /* not subprocesses */
7628 #include <sys/types.h>
7630 #include <sys/stat.h>
7634 #ifdef HAVE_UNISTD_H
7639 #include "systime.h"
7640 #include "character.h"
7642 #include "termopts.h"
7643 #include "sysselect.h"
7645 extern int frame_garbaged
;
7647 extern EMACS_TIME
timer_check ();
7648 extern int timers_run
;
7650 Lisp_Object QCtype
, QCname
;
7652 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
7653 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
7654 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
7655 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
7657 /* As described above, except assuming that there are no subprocesses:
7659 Wait for timeout to elapse and/or keyboard input to be available.
7662 timeout in seconds, or
7663 zero for no limit, or
7664 -1 means gobble data immediately available but don't wait for any.
7666 read_kbd is a Lisp_Object:
7667 0 to ignore keyboard input, or
7668 1 to return when input is available, or
7669 -1 means caller will actually read the input, so don't throw to
7672 see full version for other parameters. We know that wait_proc will
7673 always be NULL, since `subprocesses' isn't defined.
7675 do_display != 0 means redisplay should be done to show subprocess
7676 output that arrives.
7678 Return true if we received input from any process. */
7681 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7682 wait_for_cell
, wait_proc
, just_wait_proc
)
7683 int time_limit
, microsecs
, read_kbd
, do_display
;
7684 Lisp_Object wait_for_cell
;
7685 struct Lisp_Process
*wait_proc
;
7689 EMACS_TIME end_time
, timeout
;
7690 SELECT_TYPE waitchannels
;
7693 /* What does time_limit really mean? */
7694 if (time_limit
|| microsecs
)
7696 EMACS_GET_TIME (end_time
);
7697 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7698 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7701 /* Turn off periodic alarms (in case they are in use)
7702 and then turn off any other atimers,
7703 because the select emulator uses alarms. */
7705 turn_on_atimers (0);
7709 int timeout_reduced_for_timers
= 0;
7711 /* If calling from keyboard input, do not quit
7712 since we want to return C-g as an input character.
7713 Otherwise, do pending quit if requested. */
7717 /* Exit now if the cell we're waiting for became non-nil. */
7718 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7721 /* Compute time from now till when time limit is up */
7722 /* Exit if already run out */
7723 if (time_limit
== -1)
7725 /* -1 specified for timeout means
7726 gobble output available now
7727 but don't wait at all. */
7729 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7731 else if (time_limit
|| microsecs
)
7733 EMACS_GET_TIME (timeout
);
7734 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7735 if (EMACS_TIME_NEG_P (timeout
))
7740 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7743 /* If our caller will not immediately handle keyboard events,
7744 run timer events directly.
7745 (Callers that will immediately read keyboard events
7746 call timer_delay on their own.) */
7747 if (NILP (wait_for_cell
))
7749 EMACS_TIME timer_delay
;
7753 int old_timers_run
= timers_run
;
7754 timer_delay
= timer_check (1);
7755 if (timers_run
!= old_timers_run
&& do_display
)
7756 /* We must retry, since a timer may have requeued itself
7757 and that could alter the time delay. */
7758 redisplay_preserve_echo_area (14);
7762 while (!detect_input_pending ());
7764 /* If there is unread keyboard input, also return. */
7766 && requeued_events_pending_p ())
7769 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7771 EMACS_TIME difference
;
7772 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7773 if (EMACS_TIME_NEG_P (difference
))
7775 timeout
= timer_delay
;
7776 timeout_reduced_for_timers
= 1;
7781 /* Cause C-g and alarm signals to take immediate action,
7782 and cause input available signals to zero out timeout. */
7784 set_waiting_for_input (&timeout
);
7786 /* Wait till there is something to do. */
7788 if (! read_kbd
&& NILP (wait_for_cell
))
7789 FD_ZERO (&waitchannels
);
7791 FD_SET (0, &waitchannels
);
7793 /* If a frame has been newly mapped and needs updating,
7794 reprocess its display stuff. */
7795 if (frame_garbaged
&& do_display
)
7797 clear_waiting_for_input ();
7798 redisplay_preserve_echo_area (15);
7800 set_waiting_for_input (&timeout
);
7803 if (read_kbd
&& detect_input_pending ())
7806 FD_ZERO (&waitchannels
);
7809 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7814 /* Make C-g and alarm signals set flags again */
7815 clear_waiting_for_input ();
7817 /* If we woke up due to SIGWINCH, actually change size now. */
7818 do_pending_window_change (0);
7820 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7821 /* We waited the full specified time, so return now. */
7826 /* If the system call was interrupted, then go around the
7828 if (xerrno
== EINTR
)
7829 FD_ZERO (&waitchannels
);
7831 error ("select error: %s", emacs_strerror (xerrno
));
7834 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7835 /* System sometimes fails to deliver SIGIO. */
7836 kill (getpid (), SIGIO
);
7839 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7840 kill (getpid (), SIGIO
);
7843 /* Check for keyboard input */
7846 && detect_input_pending_run_timers (do_display
))
7848 swallow_events (do_display
);
7849 if (detect_input_pending_run_timers (do_display
))
7853 /* If there is unread keyboard input, also return. */
7855 && requeued_events_pending_p ())
7858 /* If wait_for_cell. check for keyboard input
7859 but don't run any timers.
7860 ??? (It seems wrong to me to check for keyboard
7861 input at all when wait_for_cell, but the code
7862 has been this way since July 1994.
7863 Try changing this after version 19.31.) */
7864 if (! NILP (wait_for_cell
)
7865 && detect_input_pending ())
7867 swallow_events (do_display
);
7868 if (detect_input_pending ())
7872 /* Exit now if the cell we're waiting for became non-nil. */
7873 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7883 /* Don't confuse make-docfile by having two doc strings for this function.
7884 make-docfile does not pay attention to #if, for good reason! */
7885 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7888 register Lisp_Object name
;
7893 /* Don't confuse make-docfile by having two doc strings for this function.
7894 make-docfile does not pay attention to #if, for good reason! */
7895 DEFUN ("process-inherit-coding-system-flag",
7896 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7900 register Lisp_Object process
;
7902 /* Ignore the argument and return the value of
7903 inherit-process-coding-system. */
7904 return inherit_process_coding_system
? Qt
: Qnil
;
7907 /* Kill all processes associated with `buffer'.
7908 If `buffer' is nil, kill all processes.
7909 Since we have no subprocesses, this does nothing. */
7912 kill_buffer_processes (buffer
)
7917 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7919 doc
: /* Return a list of numerical process IDs of all running processes.
7920 If this functionality is unsupported, return nil.
7922 See `process-attributes' for getting attributes of a process given its ID. */)
7925 return list_system_processes ();
7928 DEFUN ("process-attributes", Fprocess_attributes
,
7929 Sprocess_attributes
, 1, 1, 0,
7930 doc
: /* Return attributes of the process given by its PID, a number.
7932 Value is an alist where each element is a cons cell of the form
7936 If this functionality is unsupported, the value is nil.
7938 See `list-system-processes' for getting a list of all process IDs.
7940 The KEYs of the attributes that this function may return are listed
7941 below, together with the type of the associated VALUE (in parentheses).
7942 Not all platforms support all of these attributes; unsupported
7943 attributes will not appear in the returned alist.
7944 Unless explicitly indicated otherwise, numbers can have either
7945 integer or floating point values.
7947 euid -- Effective user User ID of the process (number)
7948 user -- User name corresponding to euid (string)
7949 egid -- Effective user Group ID of the process (number)
7950 group -- Group name corresponding to egid (string)
7951 comm -- Command name (executable name only) (string)
7952 state -- Process state code, such as "S", "R", or "T" (string)
7953 ppid -- Parent process ID (number)
7954 pgrp -- Process group ID (number)
7955 sess -- Session ID, i.e. process ID of session leader (number)
7956 ttname -- Controlling tty name (string)
7957 tpgid -- ID of foreground process group on the process's tty (number)
7958 minflt -- number of minor page faults (number)
7959 majflt -- number of major page faults (number)
7960 cminflt -- cumulative number of minor page faults (number)
7961 cmajflt -- cumulative number of major page faults (number)
7962 utime -- user time used by the process, in the (HIGH LOW USEC) format
7963 stime -- system time used by the process, in the (HIGH LOW USEC) format
7964 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7965 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7966 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7967 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7968 pri -- priority of the process (number)
7969 nice -- nice value of the process (number)
7970 thcount -- process thread count (number)
7971 start -- time the process started, in the (HIGH LOW USEC) format
7972 vsize -- virtual memory size of the process in KB's (number)
7973 rss -- resident set size of the process in KB's (number)
7974 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7975 pcpu -- percents of CPU time used by the process (floating-point number)
7976 pmem -- percents of total physical memory used by process's resident set
7977 (floating-point number)
7978 args -- command line which invoked the process (string). */)
7983 return system_process_attributes (pid
);
7994 QCtype
= intern_c_string (":type");
7995 staticpro (&QCtype
);
7996 QCname
= intern_c_string (":name");
7997 staticpro (&QCname
);
7998 QCtype
= intern_c_string (":type");
7999 staticpro (&QCtype
);
8000 QCname
= intern_c_string (":name");
8001 staticpro (&QCname
);
8002 Qeuid
= intern_c_string ("euid");
8004 Qegid
= intern_c_string ("egid");
8006 Quser
= intern_c_string ("user");
8008 Qgroup
= intern_c_string ("group");
8009 staticpro (&Qgroup
);
8010 Qcomm
= intern_c_string ("comm");
8012 Qstate
= intern_c_string ("state");
8013 staticpro (&Qstate
);
8014 Qppid
= intern_c_string ("ppid");
8016 Qpgrp
= intern_c_string ("pgrp");
8018 Qsess
= intern_c_string ("sess");
8020 Qttname
= intern_c_string ("ttname");
8021 staticpro (&Qttname
);
8022 Qtpgid
= intern_c_string ("tpgid");
8023 staticpro (&Qtpgid
);
8024 Qminflt
= intern_c_string ("minflt");
8025 staticpro (&Qminflt
);
8026 Qmajflt
= intern_c_string ("majflt");
8027 staticpro (&Qmajflt
);
8028 Qcminflt
= intern_c_string ("cminflt");
8029 staticpro (&Qcminflt
);
8030 Qcmajflt
= intern_c_string ("cmajflt");
8031 staticpro (&Qcmajflt
);
8032 Qutime
= intern_c_string ("utime");
8033 staticpro (&Qutime
);
8034 Qstime
= intern_c_string ("stime");
8035 staticpro (&Qstime
);
8036 Qtime
= intern_c_string ("time");
8038 Qcutime
= intern_c_string ("cutime");
8039 staticpro (&Qcutime
);
8040 Qcstime
= intern_c_string ("cstime");
8041 staticpro (&Qcstime
);
8042 Qctime
= intern_c_string ("ctime");
8043 staticpro (&Qctime
);
8044 Qpri
= intern_c_string ("pri");
8046 Qnice
= intern_c_string ("nice");
8048 Qthcount
= intern_c_string ("thcount");
8049 staticpro (&Qthcount
);
8050 Qstart
= intern_c_string ("start");
8051 staticpro (&Qstart
);
8052 Qvsize
= intern_c_string ("vsize");
8053 staticpro (&Qvsize
);
8054 Qrss
= intern_c_string ("rss");
8056 Qetime
= intern_c_string ("etime");
8057 staticpro (&Qetime
);
8058 Qpcpu
= intern_c_string ("pcpu");
8060 Qpmem
= intern_c_string ("pmem");
8062 Qargs
= intern_c_string ("args");
8065 defsubr (&Sget_buffer_process
);
8066 defsubr (&Sprocess_inherit_coding_system_flag
);
8067 defsubr (&Slist_system_processes
);
8068 defsubr (&Sprocess_attributes
);
8072 #endif /* not subprocesses */
8074 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
8075 (do not change this comment) */