1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 96, 98, 1999,
3 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 /* This file is split into two parts by the following preprocessor
27 conditional. The 'then' clause contains all of the support for
28 asynchronous subprocesses. The 'else' clause contains stub
29 versions of some of the asynchronous subprocess routines that are
30 often called elsewhere in Emacs, so we don't have to #ifdef the
31 sections that call them. */
39 #include <sys/types.h> /* some typedefs are used in sys/file.h */
46 #if defined(WINDOWSNT) || defined(UNIX98_PTYS)
49 #endif /* not WINDOWSNT */
51 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
52 #include <sys/socket.h>
54 #include <netinet/in.h>
55 #include <arpa/inet.h>
56 #ifdef NEED_NET_ERRNO_H
57 #include <net/errno.h>
58 #endif /* NEED_NET_ERRNO_H */
60 /* Are local (unix) sockets supported? */
61 #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM)
62 #if !defined (AF_LOCAL) && defined (AF_UNIX)
63 #define AF_LOCAL AF_UNIX
66 #define HAVE_LOCAL_SOCKETS
70 #endif /* HAVE_SOCKETS */
72 /* TERM is a poor-man's SLIP, used on GNU/Linux. */
77 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
78 #ifdef HAVE_BROKEN_INET_ADDR
79 #define IN_ADDR struct in_addr
80 #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
82 #define IN_ADDR unsigned long
83 #define NUMERIC_ADDR_ERROR (numeric_addr == -1)
86 #if defined(BSD_SYSTEM) || defined(STRIDE)
87 #include <sys/ioctl.h>
88 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
90 #endif /* HAVE_PTYS and no O_NDELAY */
91 #endif /* BSD_SYSTEM || STRIDE */
93 #ifdef BROKEN_O_NONBLOCK
95 #endif /* BROKEN_O_NONBLOCK */
101 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
103 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
104 /* sys/ioctl.h may have been included already */
106 #include <sys/ioctl.h>
113 #include <sys/sysmacros.h> /* for "minor" */
114 #endif /* not IRIS */
117 #include <sys/wait.h>
126 #include "character.h"
129 #include "termhooks.h"
130 #include "termopts.h"
131 #include "commands.h"
132 #include "keyboard.h"
134 #include "blockinput.h"
135 #include "dispextern.h"
136 #include "composite.h"
139 Lisp_Object Qprocessp
;
140 Lisp_Object Qrun
, Qstop
, Qsignal
;
141 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
142 Lisp_Object Qlocal
, Qdatagram
;
143 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
144 Lisp_Object QClocal
, QCremote
, QCcoding
;
145 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
146 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
147 Lisp_Object QCfilter_multibyte
;
148 Lisp_Object Qlast_nonmenu_event
;
149 /* QCfamily is declared and initialized in xfaces.c,
150 QCfilter in keyboard.c. */
151 extern Lisp_Object QCfamily
, QCfilter
;
153 /* Qexit is declared and initialized in eval.c. */
155 /* QCfamily is defined in xfaces.c. */
156 extern Lisp_Object QCfamily
;
157 /* QCfilter is defined in keyboard.c. */
158 extern Lisp_Object QCfilter
;
160 /* a process object is a network connection when its childp field is neither
161 Qt nor Qnil but is instead a property list (KEY VAL ...). */
164 #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp))
165 #define NETCONN1_P(p) (GC_CONSP ((p)->childp))
167 #define NETCONN_P(p) 0
168 #define NETCONN1_P(p) 0
169 #endif /* HAVE_SOCKETS */
171 /* Define first descriptor number available for subprocesses. */
173 #define FIRST_PROC_DESC 1
175 #define FIRST_PROC_DESC 3
178 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
181 #if !defined (SIGCHLD) && defined (SIGCLD)
182 #define SIGCHLD SIGCLD
185 #include "syssignal.h"
189 extern void set_waiting_for_input
P_ ((EMACS_TIME
*));
195 extern char *sys_errlist
[];
202 /* t means use pty, nil means use a pipe,
203 maybe other values to come. */
204 static Lisp_Object Vprocess_connection_type
;
208 #include <sys/socket.h>
212 /* These next two vars are non-static since sysdep.c uses them in the
213 emulation of `select'. */
214 /* Number of events of change of status of a process. */
216 /* Number of events for which the user or sentinel has been notified. */
219 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
221 #ifdef BROKEN_NON_BLOCKING_CONNECT
222 #undef NON_BLOCKING_CONNECT
224 #ifndef NON_BLOCKING_CONNECT
227 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
228 #if defined (O_NONBLOCK) || defined (O_NDELAY)
229 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
230 #define NON_BLOCKING_CONNECT
231 #endif /* EWOULDBLOCK || EINPROGRESS */
232 #endif /* O_NONBLOCK || O_NDELAY */
233 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
234 #endif /* HAVE_SELECT */
235 #endif /* HAVE_SOCKETS */
236 #endif /* NON_BLOCKING_CONNECT */
237 #endif /* BROKEN_NON_BLOCKING_CONNECT */
239 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
240 this system. We need to read full packets, so we need a
241 "non-destructive" select. So we require either native select,
242 or emulation of select using FIONREAD. */
244 #ifdef BROKEN_DATAGRAM_SOCKETS
245 #undef DATAGRAM_SOCKETS
247 #ifndef DATAGRAM_SOCKETS
249 #if defined (HAVE_SELECT) || defined (FIONREAD)
250 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
251 #define DATAGRAM_SOCKETS
252 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
253 #endif /* HAVE_SELECT || FIONREAD */
254 #endif /* HAVE_SOCKETS */
255 #endif /* DATAGRAM_SOCKETS */
256 #endif /* BROKEN_DATAGRAM_SOCKETS */
259 #undef NON_BLOCKING_CONNECT
260 #undef DATAGRAM_SOCKETS
263 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
264 #ifdef EMACS_HAS_USECS
265 #define ADAPTIVE_READ_BUFFERING
269 #ifdef ADAPTIVE_READ_BUFFERING
270 #define READ_OUTPUT_DELAY_INCREMENT 10000
271 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
272 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
274 /* Number of processes which might be delayed. */
276 static int process_output_delay_count
;
278 /* Non-zero if any process has non-nil process_output_skip. */
280 static int process_output_skip
;
282 /* Non-nil means to delay reading process output to improve buffering.
283 A value of t means that delay is reset after each send, any other
284 non-nil value does not reset the delay. */
285 static Lisp_Object Vprocess_adaptive_read_buffering
;
287 #define process_output_delay_count 0
291 #include "sysselect.h"
293 extern int keyboard_bit_set
P_ ((SELECT_TYPE
*));
295 /* If we support a window system, turn on the code to poll periodically
296 to detect C-g. It isn't actually used when doing interrupt input. */
297 #ifdef HAVE_WINDOW_SYSTEM
298 #define POLL_FOR_INPUT
301 /* Mask of bits indicating the descriptors that we wait for input on. */
303 static SELECT_TYPE input_wait_mask
;
305 /* Mask that excludes keyboard input descriptor (s). */
307 static SELECT_TYPE non_keyboard_wait_mask
;
309 /* Mask that excludes process input descriptor (s). */
311 static SELECT_TYPE non_process_wait_mask
;
313 #ifdef NON_BLOCKING_CONNECT
314 /* Mask of bits indicating the descriptors that we wait for connect to
315 complete on. Once they complete, they are removed from this mask
316 and added to the input_wait_mask and non_keyboard_wait_mask. */
318 static SELECT_TYPE connect_wait_mask
;
320 /* Number of bits set in connect_wait_mask. */
321 static int num_pending_connects
;
323 #define IF_NON_BLOCKING_CONNECT(s) s
325 #define IF_NON_BLOCKING_CONNECT(s)
328 /* The largest descriptor currently in use for a process object. */
329 static int max_process_desc
;
331 /* The largest descriptor currently in use for keyboard input. */
332 static int max_keyboard_desc
;
334 /* Nonzero means delete a process right away if it exits. */
335 static int delete_exited_processes
;
337 /* Indexed by descriptor, gives the process (if any) for that descriptor */
338 Lisp_Object chan_process
[MAXDESC
];
340 /* Alist of elements (NAME . PROCESS) */
341 Lisp_Object Vprocess_alist
;
343 /* Buffered-ahead input char from process, indexed by channel.
344 -1 means empty (no char is buffered).
345 Used on sys V where the only way to tell if there is any
346 output from the process is to read at least one char.
347 Always -1 on systems that support FIONREAD. */
349 /* Don't make static; need to access externally. */
350 int proc_buffered_char
[MAXDESC
];
352 /* Table of `struct coding-system' for each process. */
353 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
354 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
356 #ifdef DATAGRAM_SOCKETS
357 /* Table of `partner address' for datagram sockets. */
358 struct sockaddr_and_len
{
361 } datagram_address
[MAXDESC
];
362 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
363 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0)
365 #define DATAGRAM_CHAN_P(chan) (0)
366 #define DATAGRAM_CONN_P(proc) (0)
369 static Lisp_Object
get_process ();
370 static void exec_sentinel ();
372 extern EMACS_TIME
timer_check ();
373 extern int timers_run
;
375 /* Maximum number of bytes to send to a pty without an eof. */
376 static int pty_max_bytes
;
378 extern Lisp_Object Vfile_name_coding_system
, Vdefault_file_name_coding_system
;
384 /* The file name of the pty opened by allocate_pty. */
386 static char pty_name
[24];
389 /* Compute the Lisp form of the process status, p->status, from
390 the numeric status that was returned by `wait'. */
392 Lisp_Object
status_convert ();
396 struct Lisp_Process
*p
;
398 union { int i
; WAITTYPE wt
; } u
;
399 u
.i
= XFASTINT (p
->raw_status_low
) + (XFASTINT (p
->raw_status_high
) << 16);
400 p
->status
= status_convert (u
.wt
);
401 p
->raw_status_low
= Qnil
;
402 p
->raw_status_high
= Qnil
;
405 /* Convert a process status word in Unix format to
406 the list that we use internally. */
413 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
414 else if (WIFEXITED (w
))
415 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
416 WCOREDUMP (w
) ? Qt
: Qnil
));
417 else if (WIFSIGNALED (w
))
418 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
419 WCOREDUMP (w
) ? Qt
: Qnil
));
424 /* Given a status-list, extract the three pieces of information
425 and store them individually through the three pointers. */
428 decode_status (l
, symbol
, code
, coredump
)
446 *code
= XFASTINT (XCAR (tem
));
448 *coredump
= !NILP (tem
);
452 /* Return a string describing a process status list. */
456 struct Lisp_Process
*p
;
458 Lisp_Object status
= p
->status
;
461 Lisp_Object string
, string2
;
463 decode_status (status
, &symbol
, &code
, &coredump
);
465 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
468 synchronize_system_messages_locale ();
469 signame
= strsignal (code
);
472 string
= build_string (signame
);
473 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
474 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
475 return concat2 (string
, string2
);
477 else if (EQ (symbol
, Qexit
))
480 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
482 return build_string ("finished\n");
483 string
= Fnumber_to_string (make_number (code
));
484 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
485 return concat3 (build_string ("exited abnormally with code "),
488 else if (EQ (symbol
, Qfailed
))
490 string
= Fnumber_to_string (make_number (code
));
491 string2
= build_string ("\n");
492 return concat3 (build_string ("failed with code "),
496 return Fcopy_sequence (Fsymbol_name (symbol
));
501 /* Open an available pty, returning a file descriptor.
502 Return -1 on failure.
503 The file name of the terminal corresponding to the pty
504 is left in the variable pty_name. */
515 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
516 for (i
= 0; i
< 16; i
++)
519 struct stat stb
; /* Used in some PTY_OPEN. */
520 #ifdef PTY_NAME_SPRINTF
523 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
524 #endif /* no PTY_NAME_SPRINTF */
528 #else /* no PTY_OPEN */
531 /* Unusual IRIS code */
532 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
535 if (fstat (fd
, &stb
) < 0)
537 # else /* not IRIS */
538 { /* Some systems name their pseudoterminals so that there are gaps in
539 the usual sequence - for example, on HP9000/S700 systems, there
540 are no pseudoterminals with names ending in 'f'. So we wait for
541 three failures in a row before deciding that we've reached the
543 int failed_count
= 0;
545 if (stat (pty_name
, &stb
) < 0)
548 if (failed_count
>= 3)
555 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
557 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
559 # endif /* not IRIS */
561 #endif /* no PTY_OPEN */
565 /* check to make certain that both sides are available
566 this avoids a nasty yet stupid bug in rlogins */
567 #ifdef PTY_TTY_NAME_SPRINTF
570 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
571 #endif /* no PTY_TTY_NAME_SPRINTF */
573 if (access (pty_name
, 6) != 0)
576 # if !defined(IRIS) && !defined(__sgi)
582 #endif /* not UNIPLUS */
589 #endif /* HAVE_PTYS */
595 register Lisp_Object val
, tem
, name1
;
596 register struct Lisp_Process
*p
;
600 p
= allocate_process ();
602 XSETINT (p
->infd
, -1);
603 XSETINT (p
->outfd
, -1);
604 XSETFASTINT (p
->pid
, 0);
605 XSETFASTINT (p
->tick
, 0);
606 XSETFASTINT (p
->update_tick
, 0);
607 p
->raw_status_low
= Qnil
;
608 p
->raw_status_high
= Qnil
;
610 p
->mark
= Fmake_marker ();
612 #ifdef ADAPTIVE_READ_BUFFERING
613 p
->adaptive_read_buffering
= Qnil
;
614 XSETFASTINT (p
->read_output_delay
, 0);
615 p
->read_output_skip
= Qnil
;
618 /* If name is already in use, modify it until it is unused. */
623 tem
= Fget_process (name1
);
624 if (NILP (tem
)) break;
625 sprintf (suffix
, "<%d>", i
);
626 name1
= concat2 (name
, build_string (suffix
));
630 XSETPROCESS (val
, p
);
631 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
636 remove_process (proc
)
637 register Lisp_Object proc
;
639 register Lisp_Object pair
;
641 pair
= Frassq (proc
, Vprocess_alist
);
642 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
644 deactivate_process (proc
);
647 /* Setup coding systems of PROCESS. */
650 setup_process_coding_systems (process
)
653 struct Lisp_Process
*p
= XPROCESS (process
);
654 int inch
= XINT (p
->infd
);
655 int outch
= XINT (p
->outfd
);
656 Lisp_Object coding_system
;
658 if (inch
< 0 || outch
< 0)
661 if (!proc_decode_coding_system
[inch
])
662 proc_decode_coding_system
[inch
]
663 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
664 coding_system
= p
->decode_coding_system
;
665 if (! NILP (p
->filter
))
667 if (NILP (p
->filter_multibyte
))
668 coding_system
= raw_text_coding_system (coding_system
);
670 else if (BUFFERP (p
->buffer
))
672 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
673 coding_system
= raw_text_coding_system (coding_system
);
675 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
677 if (!proc_encode_coding_system
[outch
])
678 proc_encode_coding_system
[outch
]
679 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
680 setup_coding_system (p
->encode_coding_system
,
681 proc_encode_coding_system
[outch
]);
684 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
685 doc
: /* Return t if OBJECT is a process. */)
689 return PROCESSP (object
) ? Qt
: Qnil
;
692 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
693 doc
: /* Return the process named NAME, or nil if there is none. */)
695 register Lisp_Object name
;
700 return Fcdr (Fassoc (name
, Vprocess_alist
));
703 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
704 doc
: /* Return the (or a) process associated with BUFFER.
705 BUFFER may be a buffer or the name of one. */)
707 register Lisp_Object buffer
;
709 register Lisp_Object buf
, tail
, proc
;
711 if (NILP (buffer
)) return Qnil
;
712 buf
= Fget_buffer (buffer
);
713 if (NILP (buf
)) return Qnil
;
715 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
717 proc
= Fcdr (Fcar (tail
));
718 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
724 /* This is how commands for the user decode process arguments. It
725 accepts a process, a process name, a buffer, a buffer name, or nil.
726 Buffers denote the first process in the buffer, and nil denotes the
731 register Lisp_Object name
;
733 register Lisp_Object proc
, obj
;
736 obj
= Fget_process (name
);
738 obj
= Fget_buffer (name
);
740 error ("Process %s does not exist", SDATA (name
));
742 else if (NILP (name
))
743 obj
= Fcurrent_buffer ();
747 /* Now obj should be either a buffer object or a process object.
751 proc
= Fget_buffer_process (obj
);
753 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
763 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
764 doc
: /* Delete PROCESS: kill it and forget about it immediately.
765 PROCESS may be a process, a buffer, the name of a process or buffer, or
766 nil, indicating the current buffer's process. */)
768 register Lisp_Object process
;
770 process
= get_process (process
);
771 XPROCESS (process
)->raw_status_low
= Qnil
;
772 XPROCESS (process
)->raw_status_high
= Qnil
;
773 if (NETCONN_P (process
))
775 XPROCESS (process
)->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
776 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
779 else if (XINT (XPROCESS (process
)->infd
) >= 0)
781 Fkill_process (process
, Qnil
);
782 /* Do this now, since remove_process will make sigchld_handler do nothing. */
783 XPROCESS (process
)->status
784 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
785 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
788 remove_process (process
);
792 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
793 doc
: /* Return the status of PROCESS.
794 The returned value is one of the following symbols:
795 run -- for a process that is running.
796 stop -- for a process stopped but continuable.
797 exit -- for a process that has exited.
798 signal -- for a process that has got a fatal signal.
799 open -- for a network stream connection that is open.
800 listen -- for a network stream server that is listening.
801 closed -- for a network stream connection that is closed.
802 connect -- when waiting for a non-blocking connection to complete.
803 failed -- when a non-blocking connection has failed.
804 nil -- if arg is a process name and no such process exists.
805 PROCESS may be a process, a buffer, the name of a process, or
806 nil, indicating the current buffer's process. */)
808 register Lisp_Object process
;
810 register struct Lisp_Process
*p
;
811 register Lisp_Object status
;
813 if (STRINGP (process
))
814 process
= Fget_process (process
);
816 process
= get_process (process
);
821 p
= XPROCESS (process
);
822 if (!NILP (p
->raw_status_low
))
826 status
= XCAR (status
);
829 if (EQ (status
, Qexit
))
831 else if (EQ (p
->command
, Qt
))
833 else if (EQ (status
, Qrun
))
839 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
841 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
842 If PROCESS has not yet exited or died, return 0. */)
844 register Lisp_Object process
;
846 CHECK_PROCESS (process
);
847 if (!NILP (XPROCESS (process
)->raw_status_low
))
848 update_status (XPROCESS (process
));
849 if (CONSP (XPROCESS (process
)->status
))
850 return XCAR (XCDR (XPROCESS (process
)->status
));
851 return make_number (0);
854 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
855 doc
: /* Return the process id of PROCESS.
856 This is the pid of the external process which PROCESS uses or talks to.
857 For a network connection, this value is nil. */)
859 register Lisp_Object process
;
861 CHECK_PROCESS (process
);
862 return XPROCESS (process
)->pid
;
865 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
866 doc
: /* Return the name of PROCESS, as a string.
867 This is the name of the program invoked in PROCESS,
868 possibly modified to make it unique among process names. */)
870 register Lisp_Object process
;
872 CHECK_PROCESS (process
);
873 return XPROCESS (process
)->name
;
876 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
877 doc
: /* Return the command that was executed to start PROCESS.
878 This is a list of strings, the first string being the program executed
879 and the rest of the strings being the arguments given to it.
880 For a non-child channel, this is nil. */)
882 register Lisp_Object process
;
884 CHECK_PROCESS (process
);
885 return XPROCESS (process
)->command
;
888 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
889 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
890 This is the terminal that the process itself reads and writes on,
891 not the name of the pty that Emacs uses to talk with that terminal. */)
893 register Lisp_Object process
;
895 CHECK_PROCESS (process
);
896 return XPROCESS (process
)->tty_name
;
899 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
901 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
903 register Lisp_Object process
, buffer
;
905 struct Lisp_Process
*p
;
907 CHECK_PROCESS (process
);
909 CHECK_BUFFER (buffer
);
910 p
= XPROCESS (process
);
913 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
914 setup_process_coding_systems (process
);
918 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
920 doc
: /* Return the buffer PROCESS is associated with.
921 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
923 register Lisp_Object process
;
925 CHECK_PROCESS (process
);
926 return XPROCESS (process
)->buffer
;
929 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
931 doc
: /* Return the marker for the end of the last output from PROCESS. */)
933 register Lisp_Object process
;
935 CHECK_PROCESS (process
);
936 return XPROCESS (process
)->mark
;
939 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
941 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
942 t means stop accepting output from the process.
944 When a process has a filter, its buffer is not used for output.
945 Instead, each time it does output, the entire string of output is
946 passed to the filter.
948 The filter gets two arguments: the process and the string of output.
949 The string argument is normally a multibyte string, except:
950 - if the process' input coding system is no-conversion or raw-text,
951 it is a unibyte string (the non-converted input), or else
952 - if `default-enable-multibyte-characters' is nil, it is a unibyte
953 string (the result of converting the decoded input multibyte
954 string to unibyte with `string-make-unibyte'). */)
956 register Lisp_Object process
, filter
;
958 struct Lisp_Process
*p
;
960 CHECK_PROCESS (process
);
961 p
= XPROCESS (process
);
963 /* Don't signal an error if the process' input file descriptor
964 is closed. This could make debugging Lisp more difficult,
965 for example when doing something like
967 (setq process (start-process ...))
969 (set-process-filter process ...) */
971 if (XINT (p
->infd
) >= 0)
973 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
975 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
976 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
978 else if (EQ (p
->filter
, Qt
)
979 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
981 FD_SET (XINT (p
->infd
), &input_wait_mask
);
982 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
988 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
989 setup_process_coding_systems (process
);
993 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
995 doc
: /* Returns the filter function of PROCESS; nil if none.
996 See `set-process-filter' for more info on filter functions. */)
998 register Lisp_Object process
;
1000 CHECK_PROCESS (process
);
1001 return XPROCESS (process
)->filter
;
1004 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1006 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1007 The sentinel is called as a function when the process changes state.
1008 It gets two arguments: the process, and a string describing the change. */)
1010 register Lisp_Object process
, sentinel
;
1012 struct Lisp_Process
*p
;
1014 CHECK_PROCESS (process
);
1015 p
= XPROCESS (process
);
1017 p
->sentinel
= sentinel
;
1019 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1023 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1025 doc
: /* Return the sentinel of PROCESS; nil if none.
1026 See `set-process-sentinel' for more info on sentinels. */)
1028 register Lisp_Object process
;
1030 CHECK_PROCESS (process
);
1031 return XPROCESS (process
)->sentinel
;
1034 DEFUN ("set-process-window-size", Fset_process_window_size
,
1035 Sset_process_window_size
, 3, 3, 0,
1036 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1037 (process
, height
, width
)
1038 register Lisp_Object process
, height
, width
;
1040 CHECK_PROCESS (process
);
1041 CHECK_NATNUM (height
);
1042 CHECK_NATNUM (width
);
1044 if (XINT (XPROCESS (process
)->infd
) < 0
1045 || set_window_size (XINT (XPROCESS (process
)->infd
),
1046 XINT (height
), XINT (width
)) <= 0)
1052 DEFUN ("set-process-inherit-coding-system-flag",
1053 Fset_process_inherit_coding_system_flag
,
1054 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1055 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1056 If the second argument FLAG is non-nil, then the variable
1057 `buffer-file-coding-system' of the buffer associated with PROCESS
1058 will be bound to the value of the coding system used to decode
1061 This is useful when the coding system specified for the process buffer
1062 leaves either the character code conversion or the end-of-line conversion
1063 unspecified, or if the coding system used to decode the process output
1064 is more appropriate for saving the process buffer.
1066 Binding the variable `inherit-process-coding-system' to non-nil before
1067 starting the process is an alternative way of setting the inherit flag
1068 for the process which will run. */)
1070 register Lisp_Object process
, flag
;
1072 CHECK_PROCESS (process
);
1073 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1077 DEFUN ("process-inherit-coding-system-flag",
1078 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1080 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1081 If this flag is t, `buffer-file-coding-system' of the buffer
1082 associated with PROCESS will inherit the coding system used to decode
1083 the process output. */)
1085 register Lisp_Object process
;
1087 CHECK_PROCESS (process
);
1088 return XPROCESS (process
)->inherit_coding_system_flag
;
1091 DEFUN ("set-process-query-on-exit-flag",
1092 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1094 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1095 If the second argument FLAG is non-nil, Emacs will query the user before
1096 exiting if PROCESS is running. */)
1098 register Lisp_Object process
, flag
;
1100 CHECK_PROCESS (process
);
1101 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1105 DEFUN ("process-query-on-exit-flag",
1106 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1108 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1110 register Lisp_Object process
;
1112 CHECK_PROCESS (process
);
1113 return Fnull (XPROCESS (process
)->kill_without_query
);
1116 #ifdef DATAGRAM_SOCKETS
1117 Lisp_Object
Fprocess_datagram_address ();
1120 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1122 doc
: /* Return the contact info of PROCESS; t for a real child.
1123 For a net connection, the value depends on the optional KEY arg.
1124 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1125 if KEY is t, the complete contact information for the connection is
1126 returned, else the specific value for the keyword KEY is returned.
1127 See `make-network-process' for a list of keywords. */)
1129 register Lisp_Object process
, key
;
1131 Lisp_Object contact
;
1133 CHECK_PROCESS (process
);
1134 contact
= XPROCESS (process
)->childp
;
1136 #ifdef DATAGRAM_SOCKETS
1137 if (DATAGRAM_CONN_P (process
)
1138 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1139 contact
= Fplist_put (contact
, QCremote
,
1140 Fprocess_datagram_address (process
));
1143 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1146 return Fcons (Fplist_get (contact
, QChost
),
1147 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1148 return Fplist_get (contact
, key
);
1151 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1153 doc
: /* Return the plist of PROCESS. */)
1155 register Lisp_Object process
;
1157 CHECK_PROCESS (process
);
1158 return XPROCESS (process
)->plist
;
1161 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1163 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1165 register Lisp_Object process
, plist
;
1167 CHECK_PROCESS (process
);
1170 XPROCESS (process
)->plist
= plist
;
1174 #if 0 /* Turned off because we don't currently record this info
1175 in the process. Perhaps add it. */
1176 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1177 doc
: /* Return the connection type of PROCESS.
1178 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1179 a socket connection. */)
1181 Lisp_Object process
;
1183 return XPROCESS (process
)->type
;
1188 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1190 doc
: /* Convert network ADDRESS from internal format to a string.
1191 If optional second argument OMIT-PORT is non-nil, don't include a port
1192 number in the string; in this case, interpret a 4 element vector as an
1193 IP address. Returns nil if format of ADDRESS is invalid. */)
1194 (address
, omit_port
)
1195 Lisp_Object address
, omit_port
;
1200 if (STRINGP (address
)) /* AF_LOCAL */
1203 if (VECTORP (address
)) /* AF_INET */
1205 register struct Lisp_Vector
*p
= XVECTOR (address
);
1206 Lisp_Object args
[6];
1209 if (!NILP (omit_port
) && (p
->size
== 4 || p
->size
== 5))
1211 args
[0] = build_string ("%d.%d.%d.%d");
1214 else if (p
->size
== 5)
1216 args
[0] = build_string ("%d.%d.%d.%d:%d");
1222 for (i
= 0; i
< nargs
; i
++)
1223 args
[i
+1] = p
->contents
[i
];
1224 return Fformat (nargs
+1, args
);
1227 if (CONSP (address
))
1229 Lisp_Object args
[2];
1230 args
[0] = build_string ("<Family %d>");
1231 args
[1] = Fcar (address
);
1232 return Fformat (2, args
);
1241 list_processes_1 (query_only
)
1242 Lisp_Object query_only
;
1244 register Lisp_Object tail
, tem
;
1245 Lisp_Object proc
, minspace
, tem1
;
1246 register struct Lisp_Process
*p
;
1248 int w_proc
, w_buffer
, w_tty
;
1249 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1251 w_proc
= 4; /* Proc */
1252 w_buffer
= 6; /* Buffer */
1253 w_tty
= 0; /* Omit if no ttys */
1255 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1259 proc
= Fcdr (Fcar (tail
));
1260 p
= XPROCESS (proc
);
1261 if (NILP (p
->childp
))
1263 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1265 if (STRINGP (p
->name
)
1266 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1268 if (!NILP (p
->buffer
))
1270 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1271 w_buffer
= 8; /* (Killed) */
1272 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1275 if (STRINGP (p
->tty_name
)
1276 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1280 XSETFASTINT (i_status
, w_proc
+ 1);
1281 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1284 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1285 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1288 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1291 XSETFASTINT (minspace
, 1);
1293 set_buffer_internal (XBUFFER (Vstandard_output
));
1294 Fbuffer_disable_undo (Vstandard_output
);
1296 current_buffer
->truncate_lines
= Qt
;
1298 write_string ("Proc", -1);
1299 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1300 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1303 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1305 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1306 write_string ("\n", -1);
1308 write_string ("----", -1);
1309 Findent_to (i_status
, minspace
); write_string ("------", -1);
1310 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1313 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1315 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1316 write_string ("\n", -1);
1318 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1322 proc
= Fcdr (Fcar (tail
));
1323 p
= XPROCESS (proc
);
1324 if (NILP (p
->childp
))
1326 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1329 Finsert (1, &p
->name
);
1330 Findent_to (i_status
, minspace
);
1332 if (!NILP (p
->raw_status_low
))
1335 if (CONSP (p
->status
))
1336 symbol
= XCAR (p
->status
);
1339 if (EQ (symbol
, Qsignal
))
1342 tem
= Fcar (Fcdr (p
->status
));
1344 if (XINT (tem
) < NSIG
)
1345 write_string (sys_errlist
[XINT (tem
)], -1);
1348 Fprinc (symbol
, Qnil
);
1350 else if (NETCONN1_P (p
))
1352 if (EQ (symbol
, Qexit
))
1353 write_string ("closed", -1);
1354 else if (EQ (p
->command
, Qt
))
1355 write_string ("stopped", -1);
1356 else if (EQ (symbol
, Qrun
))
1357 write_string ("open", -1);
1359 Fprinc (symbol
, Qnil
);
1362 Fprinc (symbol
, Qnil
);
1364 if (EQ (symbol
, Qexit
))
1367 tem
= Fcar (Fcdr (p
->status
));
1370 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1371 write_string (tembuf
, -1);
1375 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
1376 remove_process (proc
);
1378 Findent_to (i_buffer
, minspace
);
1379 if (NILP (p
->buffer
))
1380 insert_string ("(none)");
1381 else if (NILP (XBUFFER (p
->buffer
)->name
))
1382 insert_string ("(Killed)");
1384 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1388 Findent_to (i_tty
, minspace
);
1389 if (STRINGP (p
->tty_name
))
1390 Finsert (1, &p
->tty_name
);
1393 Findent_to (i_command
, minspace
);
1395 if (EQ (p
->status
, Qlisten
))
1397 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1398 if (INTEGERP (port
))
1399 port
= Fnumber_to_string (port
);
1401 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1402 sprintf (tembuf
, "(network %s server on %s)\n",
1403 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1404 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1405 insert_string (tembuf
);
1407 else if (NETCONN1_P (p
))
1409 /* For a local socket, there is no host name,
1410 so display service instead. */
1411 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1412 if (!STRINGP (host
))
1414 host
= Fplist_get (p
->childp
, QCservice
);
1415 if (INTEGERP (host
))
1416 host
= Fnumber_to_string (host
);
1419 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1420 sprintf (tembuf
, "(network %s connection to %s)\n",
1421 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1422 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1423 insert_string (tembuf
);
1435 insert_string (" ");
1437 insert_string ("\n");
1443 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1444 doc
: /* Display a list of all processes.
1445 If optional argument QUERY-ONLY is non-nil, only processes with
1446 the query-on-exit flag set will be listed.
1447 Any process listed as exited or signaled is actually eliminated
1448 after the listing is made. */)
1450 Lisp_Object query_only
;
1452 internal_with_output_to_temp_buffer ("*Process List*",
1453 list_processes_1
, query_only
);
1457 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1458 doc
: /* Return a list of all processes. */)
1461 return Fmapcar (Qcdr
, Vprocess_alist
);
1464 /* Starting asynchronous inferior processes. */
1466 static Lisp_Object
start_process_unwind ();
1468 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1469 doc
: /* Start a program in a subprocess. Return the process object for it.
1470 NAME is name for process. It is modified if necessary to make it unique.
1471 BUFFER is the buffer (or buffer name) to associate with the process.
1472 Process output goes at end of that buffer, unless you specify
1473 an output stream or filter function to handle the output.
1474 BUFFER may be also nil, meaning that this process is not associated
1476 PROGRAM is the program file name. It is searched for in PATH.
1477 Remaining arguments are strings to give program as arguments.
1479 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1482 register Lisp_Object
*args
;
1484 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1486 register unsigned char *new_argv
;
1489 register unsigned char **new_argv
;
1492 int count
= SPECPDL_INDEX ();
1496 buffer
= Fget_buffer_create (buffer
);
1498 /* Make sure that the child will be able to chdir to the current
1499 buffer's current directory, or its unhandled equivalent. We
1500 can't just have the child check for an error when it does the
1501 chdir, since it's in a vfork.
1503 We have to GCPRO around this because Fexpand_file_name and
1504 Funhandled_file_name_directory might call a file name handling
1505 function. The argument list is protected by the caller, so all
1506 we really have to worry about is buffer. */
1508 struct gcpro gcpro1
, gcpro2
;
1510 current_dir
= current_buffer
->directory
;
1512 GCPRO2 (buffer
, current_dir
);
1515 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1517 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1518 report_file_error ("Setting current directory",
1519 Fcons (current_buffer
->directory
, Qnil
));
1525 CHECK_STRING (name
);
1529 CHECK_STRING (program
);
1531 proc
= make_process (name
);
1532 /* If an error occurs and we can't start the process, we want to
1533 remove it from the process list. This means that each error
1534 check in create_process doesn't need to call remove_process
1535 itself; it's all taken care of here. */
1536 record_unwind_protect (start_process_unwind
, proc
);
1538 XPROCESS (proc
)->childp
= Qt
;
1539 XPROCESS (proc
)->plist
= Qnil
;
1540 XPROCESS (proc
)->command_channel_p
= Qnil
;
1541 XPROCESS (proc
)->buffer
= buffer
;
1542 XPROCESS (proc
)->sentinel
= Qnil
;
1543 XPROCESS (proc
)->filter
= Qnil
;
1544 XPROCESS (proc
)->filter_multibyte
1545 = buffer_defaults
.enable_multibyte_characters
;
1546 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1548 #ifdef ADAPTIVE_READ_BUFFERING
1549 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1552 /* Make the process marker point into the process buffer (if any). */
1554 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1555 BUF_ZV (XBUFFER (buffer
)),
1556 BUF_ZV_BYTE (XBUFFER (buffer
)));
1559 /* Decide coding systems for communicating with the process. Here
1560 we don't setup the structure coding_system nor pay attention to
1561 unibyte mode. They are done in create_process. */
1563 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1564 Lisp_Object coding_systems
= Qt
;
1565 Lisp_Object val
, *args2
;
1566 struct gcpro gcpro1
, gcpro2
;
1568 val
= Vcoding_system_for_read
;
1571 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1572 args2
[0] = Qstart_process
;
1573 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1574 GCPRO2 (proc
, current_dir
);
1575 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1577 if (CONSP (coding_systems
))
1578 val
= XCAR (coding_systems
);
1579 else if (CONSP (Vdefault_process_coding_system
))
1580 val
= XCAR (Vdefault_process_coding_system
);
1582 XPROCESS (proc
)->decode_coding_system
= val
;
1584 val
= Vcoding_system_for_write
;
1587 if (EQ (coding_systems
, Qt
))
1589 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1590 args2
[0] = Qstart_process
;
1591 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1592 GCPRO2 (proc
, current_dir
);
1593 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1596 if (CONSP (coding_systems
))
1597 val
= XCDR (coding_systems
);
1598 else if (CONSP (Vdefault_process_coding_system
))
1599 val
= XCDR (Vdefault_process_coding_system
);
1601 XPROCESS (proc
)->encode_coding_system
= val
;
1605 /* Make a one member argv with all args concatenated
1606 together separated by a blank. */
1607 len
= SBYTES (program
) + 2;
1608 for (i
= 3; i
< nargs
; i
++)
1612 len
+= SBYTES (tem
) + 1; /* count the blank */
1614 new_argv
= (unsigned char *) alloca (len
);
1615 strcpy (new_argv
, SDATA (program
));
1616 for (i
= 3; i
< nargs
; i
++)
1620 strcat (new_argv
, " ");
1621 strcat (new_argv
, SDATA (tem
));
1623 /* Need to add code here to check for program existence on VMS */
1626 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1628 /* If program file name is not absolute, search our path for it.
1629 Put the name we will really use in TEM. */
1630 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1631 && !(SCHARS (program
) > 1
1632 && IS_DEVICE_SEP (SREF (program
, 1))))
1634 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1637 GCPRO4 (name
, program
, buffer
, current_dir
);
1638 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1641 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1642 tem
= Fexpand_file_name (tem
, Qnil
);
1646 if (!NILP (Ffile_directory_p (program
)))
1647 error ("Specified program for new process is a directory");
1651 /* If program file name starts with /: for quoting a magic name,
1653 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1654 && SREF (tem
, 1) == ':')
1655 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1657 /* Encode the file name and put it in NEW_ARGV.
1658 That's where the child will use it to execute the program. */
1659 tem
= ENCODE_FILE (tem
);
1660 new_argv
[0] = SDATA (tem
);
1662 /* Here we encode arguments by the coding system used for sending
1663 data to the process. We don't support using different coding
1664 systems for encoding arguments and for encoding data sent to the
1667 for (i
= 3; i
< nargs
; i
++)
1671 if (STRING_MULTIBYTE (tem
))
1672 tem
= (code_convert_string_norecord
1673 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1674 new_argv
[i
- 2] = SDATA (tem
);
1676 new_argv
[i
- 2] = 0;
1677 #endif /* not VMS */
1679 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1680 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1681 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1682 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1684 XPROCESS (proc
)->inherit_coding_system_flag
1685 = (NILP (buffer
) || !inherit_process_coding_system
1688 create_process (proc
, (char **) new_argv
, current_dir
);
1690 return unbind_to (count
, proc
);
1693 /* This function is the unwind_protect form for Fstart_process. If
1694 PROC doesn't have its pid set, then we know someone has signaled
1695 an error and the process wasn't started successfully, so we should
1696 remove it from the process list. */
1698 start_process_unwind (proc
)
1701 if (!PROCESSP (proc
))
1704 /* Was PROC started successfully? */
1705 if (XINT (XPROCESS (proc
)->pid
) <= 0)
1706 remove_process (proc
);
1712 create_process_1 (timer
)
1713 struct atimer
*timer
;
1715 /* Nothing to do. */
1719 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1722 /* Mimic blocking of signals on system V, which doesn't really have it. */
1724 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1725 int sigchld_deferred
;
1728 create_process_sigchld ()
1730 signal (SIGCHLD
, create_process_sigchld
);
1732 sigchld_deferred
= 1;
1738 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1740 create_process (process
, new_argv
, current_dir
)
1741 Lisp_Object process
;
1743 Lisp_Object current_dir
;
1745 int pid
, inchannel
, outchannel
;
1747 #ifdef POSIX_SIGNALS
1750 struct sigaction sigint_action
;
1751 struct sigaction sigquit_action
;
1753 struct sigaction sighup_action
;
1755 #else /* !POSIX_SIGNALS */
1758 SIGTYPE (*sigchld
)();
1761 #endif /* !POSIX_SIGNALS */
1762 /* Use volatile to protect variables from being clobbered by longjmp. */
1763 volatile int forkin
, forkout
;
1764 volatile int pty_flag
= 0;
1766 extern char **environ
;
1769 inchannel
= outchannel
= -1;
1772 if (!NILP (Vprocess_connection_type
))
1773 outchannel
= inchannel
= allocate_pty ();
1777 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1778 /* On most USG systems it does not work to open the pty's tty here,
1779 then close it and reopen it in the child. */
1781 /* Don't let this terminal become our controlling terminal
1782 (in case we don't have one). */
1783 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1785 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1788 report_file_error ("Opening pty", Qnil
);
1790 forkin
= forkout
= -1;
1791 #endif /* not USG, or USG_SUBTTY_WORKS */
1795 #endif /* HAVE_PTYS */
1798 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1799 report_file_error ("Opening socketpair", Qnil
);
1800 outchannel
= inchannel
= sv
[0];
1801 forkout
= forkin
= sv
[1];
1803 #else /* not SKTPAIR */
1808 report_file_error ("Creating pipe", Qnil
);
1814 emacs_close (inchannel
);
1815 emacs_close (forkout
);
1816 report_file_error ("Creating pipe", Qnil
);
1821 #endif /* not SKTPAIR */
1824 /* Replaced by close_process_descs */
1825 set_exclusive_use (inchannel
);
1826 set_exclusive_use (outchannel
);
1829 /* Stride people say it's a mystery why this is needed
1830 as well as the O_NDELAY, but that it fails without this. */
1831 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1834 ioctl (inchannel
, FIONBIO
, &one
);
1839 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1840 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1843 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1844 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1848 /* Record this as an active process, with its channels.
1849 As a result, child_setup will close Emacs's side of the pipes. */
1850 chan_process
[inchannel
] = process
;
1851 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1852 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1854 /* Previously we recorded the tty descriptor used in the subprocess.
1855 It was only used for getting the foreground tty process, so now
1856 we just reopen the device (see emacs_get_tty_pgrp) as this is
1857 more portable (see USG_SUBTTY_WORKS above). */
1859 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1860 XPROCESS (process
)->status
= Qrun
;
1861 setup_process_coding_systems (process
);
1863 /* Delay interrupts until we have a chance to store
1864 the new fork's pid in its process structure */
1865 #ifdef POSIX_SIGNALS
1866 sigemptyset (&blocked
);
1868 sigaddset (&blocked
, SIGCHLD
);
1870 #ifdef HAVE_WORKING_VFORK
1871 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1872 this sets the parent's signal handlers as well as the child's.
1873 So delay all interrupts whose handlers the child might munge,
1874 and record the current handlers so they can be restored later. */
1875 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1876 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1878 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1880 #endif /* HAVE_WORKING_VFORK */
1881 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1882 #else /* !POSIX_SIGNALS */
1886 #else /* not BSD4_1 */
1887 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1888 sigsetmask (sigmask (SIGCHLD
));
1889 #else /* ordinary USG */
1891 sigchld_deferred
= 0;
1892 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1894 #endif /* ordinary USG */
1895 #endif /* not BSD4_1 */
1896 #endif /* SIGCHLD */
1897 #endif /* !POSIX_SIGNALS */
1899 FD_SET (inchannel
, &input_wait_mask
);
1900 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1901 if (inchannel
> max_process_desc
)
1902 max_process_desc
= inchannel
;
1904 /* Until we store the proper pid, enable sigchld_handler
1905 to recognize an unknown pid as standing for this process.
1906 It is very important not to let this `marker' value stay
1907 in the table after this function has returned; if it does
1908 it might cause call-process to hang and subsequent asynchronous
1909 processes to get their return values scrambled. */
1910 XSETINT (XPROCESS (process
)->pid
, -1);
1915 /* child_setup must clobber environ on systems with true vfork.
1916 Protect it from permanent change. */
1917 char **save_environ
= environ
;
1919 current_dir
= ENCODE_FILE (current_dir
);
1924 #endif /* not WINDOWSNT */
1926 int xforkin
= forkin
;
1927 int xforkout
= forkout
;
1929 #if 0 /* This was probably a mistake--it duplicates code later on,
1930 but fails to handle all the cases. */
1931 /* Make sure SIGCHLD is not blocked in the child. */
1932 sigsetmask (SIGEMPTYMASK
);
1935 /* Make the pty be the controlling terminal of the process. */
1937 /* First, disconnect its current controlling terminal. */
1939 /* We tried doing setsid only if pty_flag, but it caused
1940 process_set_signal to fail on SGI when using a pipe. */
1942 /* Make the pty's terminal the controlling terminal. */
1946 /* We ignore the return value
1947 because faith@cs.unc.edu says that is necessary on Linux. */
1948 ioctl (xforkin
, TIOCSCTTY
, 0);
1951 #else /* not HAVE_SETSID */
1953 /* It's very important to call setpgrp here and no time
1954 afterwards. Otherwise, we lose our controlling tty which
1955 is set when we open the pty. */
1958 #endif /* not HAVE_SETSID */
1959 #if defined (HAVE_TERMIOS) && defined (LDISC1)
1960 if (pty_flag
&& xforkin
>= 0)
1963 tcgetattr (xforkin
, &t
);
1965 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1966 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1969 #if defined (NTTYDISC) && defined (TIOCSETD)
1970 if (pty_flag
&& xforkin
>= 0)
1972 /* Use new line discipline. */
1973 int ldisc
= NTTYDISC
;
1974 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1979 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1980 can do TIOCSPGRP only to the process's controlling tty. */
1983 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1984 I can't test it since I don't have 4.3. */
1985 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1986 ioctl (j
, TIOCNOTTY
, 0);
1989 /* In order to get a controlling terminal on some versions
1990 of BSD, it is necessary to put the process in pgrp 0
1991 before it opens the terminal. */
1999 #endif /* TIOCNOTTY */
2001 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2002 /*** There is a suggestion that this ought to be a
2003 conditional on TIOCSPGRP,
2004 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2005 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2006 that system does seem to need this code, even though
2007 both HAVE_SETSID and TIOCSCTTY are defined. */
2008 /* Now close the pty (if we had it open) and reopen it.
2009 This makes the pty the controlling terminal of the subprocess. */
2012 #ifdef SET_CHILD_PTY_PGRP
2013 int pgrp
= getpid ();
2016 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2019 emacs_close (xforkin
);
2020 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2024 emacs_write (1, "Couldn't open the pty terminal ", 31);
2025 emacs_write (1, pty_name
, strlen (pty_name
));
2026 emacs_write (1, "\n", 1);
2030 #ifdef SET_CHILD_PTY_PGRP
2031 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2032 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2035 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2037 #ifdef SETUP_SLAVE_PTY
2042 #endif /* SETUP_SLAVE_PTY */
2044 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2045 Now reenable it in the child, so it will die when we want it to. */
2047 signal (SIGHUP
, SIG_DFL
);
2049 #endif /* HAVE_PTYS */
2051 signal (SIGINT
, SIG_DFL
);
2052 signal (SIGQUIT
, SIG_DFL
);
2054 /* Stop blocking signals in the child. */
2055 #ifdef POSIX_SIGNALS
2056 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2057 #else /* !POSIX_SIGNALS */
2061 #else /* not BSD4_1 */
2062 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2063 sigsetmask (SIGEMPTYMASK
);
2064 #else /* ordinary USG */
2066 signal (SIGCHLD
, sigchld
);
2068 #endif /* ordinary USG */
2069 #endif /* not BSD4_1 */
2070 #endif /* SIGCHLD */
2071 #endif /* !POSIX_SIGNALS */
2074 child_setup_tty (xforkout
);
2076 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2077 new_argv
, 1, current_dir
);
2078 #else /* not WINDOWSNT */
2079 child_setup (xforkin
, xforkout
, xforkout
,
2080 new_argv
, 1, current_dir
);
2081 #endif /* not WINDOWSNT */
2083 environ
= save_environ
;
2088 /* This runs in the Emacs process. */
2092 emacs_close (forkin
);
2093 if (forkin
!= forkout
&& forkout
>= 0)
2094 emacs_close (forkout
);
2098 /* vfork succeeded. */
2099 XSETFASTINT (XPROCESS (process
)->pid
, pid
);
2102 register_child (pid
, inchannel
);
2103 #endif /* WINDOWSNT */
2105 /* If the subfork execv fails, and it exits,
2106 this close hangs. I don't know why.
2107 So have an interrupt jar it loose. */
2109 struct atimer
*timer
;
2113 EMACS_SET_SECS_USECS (offset
, 1, 0);
2114 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2117 emacs_close (forkin
);
2119 cancel_atimer (timer
);
2123 if (forkin
!= forkout
&& forkout
>= 0)
2124 emacs_close (forkout
);
2128 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2131 XPROCESS (process
)->tty_name
= Qnil
;
2134 /* Restore the signal state whether vfork succeeded or not.
2135 (We will signal an error, below, if it failed.) */
2136 #ifdef POSIX_SIGNALS
2137 #ifdef HAVE_WORKING_VFORK
2138 /* Restore the parent's signal handlers. */
2139 sigaction (SIGINT
, &sigint_action
, 0);
2140 sigaction (SIGQUIT
, &sigquit_action
, 0);
2142 sigaction (SIGHUP
, &sighup_action
, 0);
2144 #endif /* HAVE_WORKING_VFORK */
2145 /* Stop blocking signals in the parent. */
2146 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2147 #else /* !POSIX_SIGNALS */
2151 #else /* not BSD4_1 */
2152 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2153 sigsetmask (SIGEMPTYMASK
);
2154 #else /* ordinary USG */
2156 signal (SIGCHLD
, sigchld
);
2157 /* Now really handle any of these signals
2158 that came in during this function. */
2159 if (sigchld_deferred
)
2160 kill (getpid (), SIGCHLD
);
2162 #endif /* ordinary USG */
2163 #endif /* not BSD4_1 */
2164 #endif /* SIGCHLD */
2165 #endif /* !POSIX_SIGNALS */
2167 /* Now generate the error if vfork failed. */
2169 report_file_error ("Doing vfork", Qnil
);
2171 #endif /* not VMS */
2176 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2177 The address family of sa is not included in the result. */
2180 conv_sockaddr_to_lisp (sa
, len
)
2181 struct sockaddr
*sa
;
2184 Lisp_Object address
;
2187 register struct Lisp_Vector
*p
;
2189 switch (sa
->sa_family
)
2193 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2194 len
= sizeof (sin
->sin_addr
) + 1;
2195 address
= Fmake_vector (make_number (len
), Qnil
);
2196 p
= XVECTOR (address
);
2197 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2198 cp
= (unsigned char *)&sin
->sin_addr
;
2201 #ifdef HAVE_LOCAL_SOCKETS
2204 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2205 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2206 if (sockun
->sun_path
[i
] == 0)
2208 return make_unibyte_string (sockun
->sun_path
, i
);
2212 len
-= sizeof (sa
->sa_family
);
2213 address
= Fcons (make_number (sa
->sa_family
),
2214 Fmake_vector (make_number (len
), Qnil
));
2215 p
= XVECTOR (XCDR (address
));
2216 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2222 p
->contents
[i
++] = make_number (*cp
++);
2228 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2231 get_lisp_to_sockaddr_size (address
, familyp
)
2232 Lisp_Object address
;
2235 register struct Lisp_Vector
*p
;
2237 if (VECTORP (address
))
2239 p
= XVECTOR (address
);
2243 return sizeof (struct sockaddr_in
);
2246 #ifdef HAVE_LOCAL_SOCKETS
2247 else if (STRINGP (address
))
2249 *familyp
= AF_LOCAL
;
2250 return sizeof (struct sockaddr_un
);
2253 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2255 struct sockaddr
*sa
;
2256 *familyp
= XINT (XCAR (address
));
2257 p
= XVECTOR (XCDR (address
));
2258 return p
->size
+ sizeof (sa
->sa_family
);
2263 /* Convert an address object (vector or string) to an internal sockaddr.
2264 Format of address has already been validated by size_lisp_to_sockaddr. */
2267 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2269 Lisp_Object address
;
2270 struct sockaddr
*sa
;
2273 register struct Lisp_Vector
*p
;
2274 register unsigned char *cp
= NULL
;
2278 sa
->sa_family
= family
;
2280 if (VECTORP (address
))
2282 p
= XVECTOR (address
);
2283 if (family
== AF_INET
)
2285 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2286 len
= sizeof (sin
->sin_addr
) + 1;
2287 i
= XINT (p
->contents
[--len
]);
2288 sin
->sin_port
= htons (i
);
2289 cp
= (unsigned char *)&sin
->sin_addr
;
2292 else if (STRINGP (address
))
2294 #ifdef HAVE_LOCAL_SOCKETS
2295 if (family
== AF_LOCAL
)
2297 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2298 cp
= SDATA (address
);
2299 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2300 sockun
->sun_path
[i
] = *cp
++;
2307 p
= XVECTOR (XCDR (address
));
2308 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2311 for (i
= 0; i
< len
; i
++)
2312 if (INTEGERP (p
->contents
[i
]))
2313 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2316 #ifdef DATAGRAM_SOCKETS
2317 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2319 doc
: /* Get the current datagram address associated with PROCESS. */)
2321 Lisp_Object process
;
2325 CHECK_PROCESS (process
);
2327 if (!DATAGRAM_CONN_P (process
))
2330 channel
= XINT (XPROCESS (process
)->infd
);
2331 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2332 datagram_address
[channel
].len
);
2335 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2337 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2338 Returns nil upon error setting address, ADDRESS otherwise. */)
2340 Lisp_Object process
, address
;
2345 CHECK_PROCESS (process
);
2347 if (!DATAGRAM_CONN_P (process
))
2350 channel
= XINT (XPROCESS (process
)->infd
);
2352 len
= get_lisp_to_sockaddr_size (address
, &family
);
2353 if (datagram_address
[channel
].len
!= len
)
2355 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2361 static struct socket_options
{
2362 /* The name of this option. Should be lowercase version of option
2363 name without SO_ prefix. */
2365 /* Option level SOL_... */
2367 /* Option number SO_... */
2369 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2370 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2371 } socket_options
[] =
2373 #ifdef SO_BINDTODEVICE
2374 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2377 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2380 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2383 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2386 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2389 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2392 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2395 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2397 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2400 /* Set option OPT to value VAL on socket S.
2402 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2403 Signals an error if setting a known option fails.
2407 set_socket_option (s
, opt
, val
)
2409 Lisp_Object opt
, val
;
2412 struct socket_options
*sopt
;
2417 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2418 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2419 if (strcmp (name
, sopt
->name
) == 0)
2422 switch (sopt
->opttype
)
2427 optval
= NILP (val
) ? 0 : 1;
2428 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2429 &optval
, sizeof (optval
));
2437 optval
= XINT (val
);
2439 error ("Bad option value for %s", name
);
2440 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2441 &optval
, sizeof (optval
));
2445 #ifdef SO_BINDTODEVICE
2448 char devname
[IFNAMSIZ
+1];
2450 /* This is broken, at least in the Linux 2.4 kernel.
2451 To unbind, the arg must be a zero integer, not the empty string.
2452 This should work on all systems. KFS. 2003-09-23. */
2453 bzero (devname
, sizeof devname
);
2456 char *arg
= (char *) SDATA (val
);
2457 int len
= min (strlen (arg
), IFNAMSIZ
);
2458 bcopy (arg
, devname
, len
);
2460 else if (!NILP (val
))
2461 error ("Bad option value for %s", name
);
2462 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2471 struct linger linger
;
2474 linger
.l_linger
= 0;
2476 linger
.l_linger
= XINT (val
);
2478 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2479 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2480 &linger
, sizeof (linger
));
2490 report_file_error ("Cannot set network option",
2491 Fcons (opt
, Fcons (val
, Qnil
)));
2492 return (1 << sopt
->optbit
);
2496 DEFUN ("set-network-process-option",
2497 Fset_network_process_option
, Sset_network_process_option
,
2499 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2500 See `make-network-process' for a list of options and values.
2501 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2502 OPTION is not a supported option, return nil instead; otherwise return t. */)
2503 (process
, option
, value
, no_error
)
2504 Lisp_Object process
, option
, value
;
2505 Lisp_Object no_error
;
2508 struct Lisp_Process
*p
;
2510 CHECK_PROCESS (process
);
2511 p
= XPROCESS (process
);
2512 if (!NETCONN1_P (p
))
2513 error ("Process is not a network process");
2517 error ("Process is not running");
2519 if (set_socket_option (s
, option
, value
))
2521 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2525 if (NILP (no_error
))
2526 error ("Unknown or unsupported option");
2532 /* A version of request_sigio suitable for a record_unwind_protect. */
2535 unwind_request_sigio (dummy
)
2538 if (interrupt_input
)
2543 /* Create a network stream/datagram client/server process. Treated
2544 exactly like a normal process when reading and writing. Primary
2545 differences are in status display and process deletion. A network
2546 connection has no PID; you cannot signal it. All you can do is
2547 stop/continue it and deactivate/close it via delete-process */
2549 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2551 doc
: /* Create and return a network server or client process.
2553 In Emacs, network connections are represented by process objects, so
2554 input and output work as for subprocesses and `delete-process' closes
2555 a network connection. However, a network process has no process id,
2556 it cannot be signalled, and the status codes are different from normal
2559 Arguments are specified as keyword/argument pairs. The following
2560 arguments are defined:
2562 :name NAME -- NAME is name for process. It is modified if necessary
2565 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2566 with the process. Process output goes at end of that buffer, unless
2567 you specify an output stream or filter function to handle the output.
2568 BUFFER may be also nil, meaning that this process is not associated
2571 :host HOST -- HOST is name of the host to connect to, or its IP
2572 address. The symbol `local' specifies the local host. If specified
2573 for a server process, it must be a valid name or address for the local
2574 host, and only clients connecting to that address will be accepted.
2576 :service SERVICE -- SERVICE is name of the service desired, or an
2577 integer specifying a port number to connect to. If SERVICE is t,
2578 a random port number is selected for the server.
2580 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2581 stream type connection, `datagram' creates a datagram type connection.
2583 :family FAMILY -- FAMILY is the address (and protocol) family for the
2584 service specified by HOST and SERVICE. The default address family is
2585 Inet (or IPv4) for the host and port number specified by HOST and
2586 SERVICE. Other address families supported are:
2587 local -- for a local (i.e. UNIX) address specified by SERVICE.
2589 :local ADDRESS -- ADDRESS is the local address used for the connection.
2590 This parameter is ignored when opening a client process. When specified
2591 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2593 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2594 connection. This parameter is ignored when opening a stream server
2595 process. For a datagram server process, it specifies the initial
2596 setting of the remote datagram address. When specified for a client
2597 process, the FAMILY, HOST, and SERVICE args are ignored.
2599 The format of ADDRESS depends on the address family:
2600 - An IPv4 address is represented as an vector of integers [A B C D P]
2601 corresponding to numeric IP address A.B.C.D and port number P.
2602 - A local address is represented as a string with the address in the
2603 local address space.
2604 - An "unsupported family" address is represented by a cons (F . AV)
2605 where F is the family number and AV is a vector containing the socket
2606 address data with one element per address data byte. Do not rely on
2607 this format in portable code, as it may depend on implementation
2608 defined constants, data sizes, and data structure alignment.
2610 :coding CODING -- If CODING is a symbol, it specifies the coding
2611 system used for both reading and writing for this process. If CODING
2612 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2613 ENCODING is used for writing.
2615 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2616 return without waiting for the connection to complete; instead, the
2617 sentinel function will be called with second arg matching "open" (if
2618 successful) or "failed" when the connect completes. Default is to use
2619 a blocking connect (i.e. wait) for stream type connections.
2621 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2622 running when Emacs is exited.
2624 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2625 In the stopped state, a server process does not accept new
2626 connections, and a client process does not handle incoming traffic.
2627 The stopped state is cleared by `continue-process' and set by
2630 :filter FILTER -- Install FILTER as the process filter.
2632 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2633 process filter are multibyte, otherwise they are unibyte.
2634 If this keyword is not specified, the strings are multibyte iff
2635 `default-enable-multibyte-characters' is non-nil.
2637 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2639 :log LOG -- Install LOG as the server process log function. This
2640 function is called when the server accepts a network connection from a
2641 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2642 is the server process, CLIENT is the new process for the connection,
2643 and MESSAGE is a string.
2645 :plist PLIST -- Install PLIST as the new process' initial plist.
2647 :server QLEN -- if QLEN is non-nil, create a server process for the
2648 specified FAMILY, SERVICE, and connection type (stream or datagram).
2649 If QLEN is an integer, it is used as the max. length of the server's
2650 pending connection queue (also known as the backlog); the default
2651 queue length is 5. Default is to create a client process.
2653 The following network options can be specified for this connection:
2655 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2656 :dontroute BOOL -- Only send to directly connected hosts.
2657 :keepalive BOOL -- Send keep-alive messages on network stream.
2658 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2659 :oobinline BOOL -- Place out-of-band data in receive data stream.
2660 :priority INT -- Set protocol defined priority for sent packets.
2661 :reuseaddr BOOL -- Allow reusing a recently used local address
2662 (this is allowed by default for a server process).
2663 :bindtodevice NAME -- bind to interface NAME. Using this may require
2664 special privileges on some systems.
2666 Consult the relevant system programmer's manual pages for more
2667 information on using these options.
2670 A server process will listen for and accept connections from clients.
2671 When a client connection is accepted, a new network process is created
2672 for the connection with the following parameters:
2674 - The client's process name is constructed by concatenating the server
2675 process' NAME and a client identification string.
2676 - If the FILTER argument is non-nil, the client process will not get a
2677 separate process buffer; otherwise, the client's process buffer is a newly
2678 created buffer named after the server process' BUFFER name or process
2679 NAME concatenated with the client identification string.
2680 - The connection type and the process filter and sentinel parameters are
2681 inherited from the server process' TYPE, FILTER and SENTINEL.
2682 - The client process' contact info is set according to the client's
2683 addressing information (typically an IP address and a port number).
2684 - The client process' plist is initialized from the server's plist.
2686 Notice that the FILTER and SENTINEL args are never used directly by
2687 the server process. Also, the BUFFER argument is not used directly by
2688 the server process, but via the optional :log function, accepted (and
2689 failed) connections may be logged in the server process' buffer.
2691 The original argument list, modified with the actual connection
2692 information, is available via the `process-contact' function.
2694 usage: (make-network-process &rest ARGS) */)
2700 Lisp_Object contact
;
2701 struct Lisp_Process
*p
;
2702 #ifdef HAVE_GETADDRINFO
2703 struct addrinfo ai
, *res
, *lres
;
2704 struct addrinfo hints
;
2705 char *portstring
, portbuf
[128];
2706 #else /* HAVE_GETADDRINFO */
2707 struct _emacs_addrinfo
2713 struct sockaddr
*ai_addr
;
2714 struct _emacs_addrinfo
*ai_next
;
2716 #endif /* HAVE_GETADDRINFO */
2717 struct sockaddr_in address_in
;
2718 #ifdef HAVE_LOCAL_SOCKETS
2719 struct sockaddr_un address_un
;
2724 int s
= -1, outch
, inch
;
2725 struct gcpro gcpro1
;
2727 int count
= SPECPDL_INDEX ();
2729 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2731 Lisp_Object name
, buffer
, host
, service
, address
;
2732 Lisp_Object filter
, sentinel
;
2733 int is_non_blocking_client
= 0;
2734 int is_server
= 0, backlog
= 5;
2741 /* Save arguments for process-contact and clone-process. */
2742 contact
= Flist (nargs
, args
);
2746 /* Ensure socket support is loaded if available. */
2747 init_winsock (TRUE
);
2750 /* :type TYPE (nil: stream, datagram */
2751 tem
= Fplist_get (contact
, QCtype
);
2753 socktype
= SOCK_STREAM
;
2754 #ifdef DATAGRAM_SOCKETS
2755 else if (EQ (tem
, Qdatagram
))
2756 socktype
= SOCK_DGRAM
;
2759 error ("Unsupported connection type");
2762 tem
= Fplist_get (contact
, QCserver
);
2765 /* Don't support network sockets when non-blocking mode is
2766 not available, since a blocked Emacs is not useful. */
2767 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2768 error ("Network servers not supported");
2772 backlog
= XINT (tem
);
2776 /* Make QCaddress an alias for :local (server) or :remote (client). */
2777 QCaddress
= is_server
? QClocal
: QCremote
;
2780 if (!is_server
&& socktype
== SOCK_STREAM
2781 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2783 #ifndef NON_BLOCKING_CONNECT
2784 error ("Non-blocking connect not supported");
2786 is_non_blocking_client
= 1;
2790 name
= Fplist_get (contact
, QCname
);
2791 buffer
= Fplist_get (contact
, QCbuffer
);
2792 filter
= Fplist_get (contact
, QCfilter
);
2793 sentinel
= Fplist_get (contact
, QCsentinel
);
2795 CHECK_STRING (name
);
2798 /* Let's handle TERM before things get complicated ... */
2799 host
= Fplist_get (contact
, QChost
);
2800 CHECK_STRING (host
);
2802 service
= Fplist_get (contact
, QCservice
);
2803 if (INTEGERP (service
))
2804 port
= htons ((unsigned short) XINT (service
));
2807 struct servent
*svc_info
;
2808 CHECK_STRING (service
);
2809 svc_info
= getservbyname (SDATA (service
), "tcp");
2811 error ("Unknown service: %s", SDATA (service
));
2812 port
= svc_info
->s_port
;
2815 s
= connect_server (0);
2817 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2818 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2819 send_command (s
, C_DUMB
, 1, 0);
2821 #else /* not TERM */
2823 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2824 ai
.ai_socktype
= socktype
;
2829 /* :local ADDRESS or :remote ADDRESS */
2830 address
= Fplist_get (contact
, QCaddress
);
2831 if (!NILP (address
))
2833 host
= service
= Qnil
;
2835 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2836 error ("Malformed :address");
2837 ai
.ai_family
= family
;
2838 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2839 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2843 /* :family FAMILY -- nil (for Inet), local, or integer. */
2844 tem
= Fplist_get (contact
, QCfamily
);
2846 family
= XINT (tem
);
2851 #ifdef HAVE_LOCAL_SOCKETS
2852 else if (EQ (tem
, Qlocal
))
2857 error ("Unknown address family");
2858 ai
.ai_family
= family
;
2860 /* :service SERVICE -- string, integer (port number), or t (random port). */
2861 service
= Fplist_get (contact
, QCservice
);
2863 #ifdef HAVE_LOCAL_SOCKETS
2864 if (family
== AF_LOCAL
)
2866 /* Host is not used. */
2868 CHECK_STRING (service
);
2869 bzero (&address_un
, sizeof address_un
);
2870 address_un
.sun_family
= AF_LOCAL
;
2871 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
2872 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2873 ai
.ai_addrlen
= sizeof address_un
;
2878 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2879 host
= Fplist_get (contact
, QChost
);
2882 if (EQ (host
, Qlocal
))
2883 host
= build_string ("localhost");
2884 CHECK_STRING (host
);
2887 /* Slow down polling to every ten seconds.
2888 Some kernels have a bug which causes retrying connect to fail
2889 after a connect. Polling can interfere with gethostbyname too. */
2890 #ifdef POLL_FOR_INPUT
2891 if (socktype
== SOCK_STREAM
)
2893 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
2894 bind_polling_period (10);
2898 #ifdef HAVE_GETADDRINFO
2899 /* If we have a host, use getaddrinfo to resolve both host and service.
2900 Otherwise, use getservbyname to lookup the service. */
2904 /* SERVICE can either be a string or int.
2905 Convert to a C string for later use by getaddrinfo. */
2906 if (EQ (service
, Qt
))
2908 else if (INTEGERP (service
))
2910 sprintf (portbuf
, "%ld", (long) XINT (service
));
2911 portstring
= portbuf
;
2915 CHECK_STRING (service
);
2916 portstring
= SDATA (service
);
2921 memset (&hints
, 0, sizeof (hints
));
2923 hints
.ai_family
= NILP (Fplist_member (contact
, QCfamily
)) ? AF_UNSPEC
: family
;
2924 hints
.ai_socktype
= socktype
;
2925 hints
.ai_protocol
= 0;
2926 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
2928 #ifdef HAVE_GAI_STRERROR
2929 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
2931 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
2937 #endif /* HAVE_GETADDRINFO */
2939 /* We end up here if getaddrinfo is not defined, or in case no hostname
2940 has been specified (e.g. for a local server process). */
2942 if (EQ (service
, Qt
))
2944 else if (INTEGERP (service
))
2945 port
= htons ((unsigned short) XINT (service
));
2948 struct servent
*svc_info
;
2949 CHECK_STRING (service
);
2950 svc_info
= getservbyname (SDATA (service
),
2951 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
2953 error ("Unknown service: %s", SDATA (service
));
2954 port
= svc_info
->s_port
;
2957 bzero (&address_in
, sizeof address_in
);
2958 address_in
.sin_family
= family
;
2959 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
2960 address_in
.sin_port
= port
;
2962 #ifndef HAVE_GETADDRINFO
2965 struct hostent
*host_info_ptr
;
2967 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
2968 as it may `hang' Emacs for a very long time. */
2971 host_info_ptr
= gethostbyname (SDATA (host
));
2976 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
2977 host_info_ptr
->h_length
);
2978 family
= host_info_ptr
->h_addrtype
;
2979 address_in
.sin_family
= family
;
2982 /* Attempt to interpret host as numeric inet address */
2984 IN_ADDR numeric_addr
;
2985 numeric_addr
= inet_addr ((char *) SDATA (host
));
2986 if (NUMERIC_ADDR_ERROR
)
2987 error ("Unknown host \"%s\"", SDATA (host
));
2989 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
2990 sizeof (address_in
.sin_addr
));
2994 #endif /* not HAVE_GETADDRINFO */
2996 ai
.ai_family
= family
;
2997 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
2998 ai
.ai_addrlen
= sizeof address_in
;
3002 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3003 when connect is interrupted. So let's not let it get interrupted.
3004 Note we do not turn off polling, because polling is only used
3005 when not interrupt_input, and thus not normally used on the systems
3006 which have this bug. On systems which use polling, there's no way
3007 to quit if polling is turned off. */
3009 && !is_server
&& socktype
== SOCK_STREAM
)
3011 /* Comment from KFS: The original open-network-stream code
3012 didn't unwind protect this, but it seems like the proper
3013 thing to do. In any case, I don't see how it could harm to
3014 do this -- and it makes cleanup (using unbind_to) easier. */
3015 record_unwind_protect (unwind_request_sigio
, Qnil
);
3019 /* Do this in case we never enter the for-loop below. */
3020 count1
= SPECPDL_INDEX ();
3023 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3027 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3034 #ifdef DATAGRAM_SOCKETS
3035 if (!is_server
&& socktype
== SOCK_DGRAM
)
3037 #endif /* DATAGRAM_SOCKETS */
3039 #ifdef NON_BLOCKING_CONNECT
3040 if (is_non_blocking_client
)
3043 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3045 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3057 /* Make us close S if quit. */
3058 record_unwind_protect (close_file_unwind
, make_number (s
));
3060 /* Parse network options in the arg list.
3061 We simply ignore anything which isn't a known option (including other keywords).
3062 An error is signalled if setting a known option fails. */
3063 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3064 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3068 /* Configure as a server socket. */
3070 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3071 explicit :reuseaddr key to override this. */
3072 #ifdef HAVE_LOCAL_SOCKETS
3073 if (family
!= AF_LOCAL
)
3075 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3078 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3079 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3082 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3083 report_file_error ("Cannot bind server socket", Qnil
);
3085 #ifdef HAVE_GETSOCKNAME
3086 if (EQ (service
, Qt
))
3088 struct sockaddr_in sa1
;
3089 int len1
= sizeof (sa1
);
3090 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3092 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3093 service
= make_number (ntohs (sa1
.sin_port
));
3094 contact
= Fplist_put (contact
, QCservice
, service
);
3099 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3100 report_file_error ("Cannot listen on server socket", Qnil
);
3110 /* This turns off all alarm-based interrupts; the
3111 bind_polling_period call above doesn't always turn all the
3112 short-interval ones off, especially if interrupt_input is
3115 It'd be nice to be able to control the connect timeout
3116 though. Would non-blocking connect calls be portable?
3118 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3120 turn_on_atimers (0);
3122 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3125 turn_on_atimers (1);
3127 if (ret
== 0 || xerrno
== EISCONN
)
3129 /* The unwind-protect will be discarded afterwards.
3130 Likewise for immediate_quit. */
3134 #ifdef NON_BLOCKING_CONNECT
3136 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3140 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3148 if (xerrno
== EINTR
)
3150 if (xerrno
== EADDRINUSE
&& retry
< 20)
3152 /* A delay here is needed on some FreeBSD systems,
3153 and it is harmless, since this retrying takes time anyway
3154 and should be infrequent. */
3155 Fsleep_for (make_number (1), Qnil
);
3160 /* Discard the unwind protect closing S. */
3161 specpdl_ptr
= specpdl
+ count1
;
3168 #ifdef DATAGRAM_SOCKETS
3169 if (socktype
== SOCK_DGRAM
)
3171 if (datagram_address
[s
].sa
)
3173 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3174 datagram_address
[s
].len
= lres
->ai_addrlen
;
3178 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3179 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3182 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3183 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3184 conv_lisp_to_sockaddr (rfamily
, remote
,
3185 datagram_address
[s
].sa
, rlen
);
3189 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3192 contact
= Fplist_put (contact
, QCaddress
,
3193 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3194 #ifdef HAVE_GETSOCKNAME
3197 struct sockaddr_in sa1
;
3198 int len1
= sizeof (sa1
);
3199 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3200 contact
= Fplist_put (contact
, QClocal
,
3201 conv_sockaddr_to_lisp (&sa1
, len1
));
3206 #ifdef HAVE_GETADDRINFO
3213 /* Discard the unwind protect for closing S, if any. */
3214 specpdl_ptr
= specpdl
+ count1
;
3216 /* Unwind bind_polling_period and request_sigio. */
3217 unbind_to (count
, Qnil
);
3221 /* If non-blocking got this far - and failed - assume non-blocking is
3222 not supported after all. This is probably a wrong assumption, but
3223 the normal blocking calls to open-network-stream handles this error
3225 if (is_non_blocking_client
)
3230 report_file_error ("make server process failed", contact
);
3232 report_file_error ("make client process failed", contact
);
3235 #endif /* not TERM */
3241 buffer
= Fget_buffer_create (buffer
);
3242 proc
= make_process (name
);
3244 chan_process
[inch
] = proc
;
3247 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3250 fcntl (inch
, F_SETFL
, O_NDELAY
);
3254 p
= XPROCESS (proc
);
3256 p
->childp
= contact
;
3257 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3260 p
->sentinel
= sentinel
;
3262 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3263 /* Override the above only if :filter-multibyte is specified. */
3264 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3265 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3266 p
->log
= Fplist_get (contact
, QClog
);
3267 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3268 p
->kill_without_query
= Qt
;
3269 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3272 XSETINT (p
->infd
, inch
);
3273 XSETINT (p
->outfd
, outch
);
3274 if (is_server
&& socktype
== SOCK_STREAM
)
3275 p
->status
= Qlisten
;
3277 #ifdef NON_BLOCKING_CONNECT
3278 if (is_non_blocking_client
)
3280 /* We may get here if connect did succeed immediately. However,
3281 in that case, we still need to signal this like a non-blocking
3283 p
->status
= Qconnect
;
3284 if (!FD_ISSET (inch
, &connect_wait_mask
))
3286 FD_SET (inch
, &connect_wait_mask
);
3287 num_pending_connects
++;
3292 /* A server may have a client filter setting of Qt, but it must
3293 still listen for incoming connects unless it is stopped. */
3294 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3295 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3297 FD_SET (inch
, &input_wait_mask
);
3298 FD_SET (inch
, &non_keyboard_wait_mask
);
3301 if (inch
> max_process_desc
)
3302 max_process_desc
= inch
;
3304 tem
= Fplist_member (contact
, QCcoding
);
3305 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3306 tem
= Qnil
; /* No error message (too late!). */
3309 /* Setup coding systems for communicating with the network stream. */
3310 struct gcpro gcpro1
;
3311 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3312 Lisp_Object coding_systems
= Qt
;
3313 Lisp_Object args
[5], val
;
3317 val
= XCAR (XCDR (tem
));
3321 else if (!NILP (Vcoding_system_for_read
))
3322 val
= Vcoding_system_for_read
;
3323 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3324 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3325 /* We dare not decode end-of-line format by setting VAL to
3326 Qraw_text, because the existing Emacs Lisp libraries
3327 assume that they receive bare code including a sequene of
3332 if (NILP (host
) || NILP (service
))
3333 coding_systems
= Qnil
;
3336 args
[0] = Qopen_network_stream
, args
[1] = name
,
3337 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3339 coding_systems
= Ffind_operation_coding_system (5, args
);
3342 if (CONSP (coding_systems
))
3343 val
= XCAR (coding_systems
);
3344 else if (CONSP (Vdefault_process_coding_system
))
3345 val
= XCAR (Vdefault_process_coding_system
);
3349 p
->decode_coding_system
= val
;
3353 val
= XCAR (XCDR (tem
));
3357 else if (!NILP (Vcoding_system_for_write
))
3358 val
= Vcoding_system_for_write
;
3359 else if (NILP (current_buffer
->enable_multibyte_characters
))
3363 if (EQ (coding_systems
, Qt
))
3365 if (NILP (host
) || NILP (service
))
3366 coding_systems
= Qnil
;
3369 args
[0] = Qopen_network_stream
, args
[1] = name
,
3370 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3372 coding_systems
= Ffind_operation_coding_system (5, args
);
3376 if (CONSP (coding_systems
))
3377 val
= XCDR (coding_systems
);
3378 else if (CONSP (Vdefault_process_coding_system
))
3379 val
= XCDR (Vdefault_process_coding_system
);
3383 p
->encode_coding_system
= val
;
3385 setup_process_coding_systems (proc
);
3387 p
->decoding_buf
= make_uninit_string (0);
3388 p
->decoding_carryover
= make_number (0);
3389 p
->encoding_buf
= make_uninit_string (0);
3390 p
->encoding_carryover
= make_number (0);
3392 p
->inherit_coding_system_flag
3393 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3399 #endif /* HAVE_SOCKETS */
3402 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3405 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3406 doc
: /* Return an alist of all network interfaces and their network address.
3407 Each element is a cons, the car of which is a string containing the
3408 interface name, and the cdr is the network address in internal
3409 format; see the description of ADDRESS in `make-network-process'. */)
3412 struct ifconf ifconf
;
3413 struct ifreq
*ifreqs
= NULL
;
3418 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3424 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3425 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3432 ifconf
.ifc_len
= buf_size
;
3433 ifconf
.ifc_req
= ifreqs
;
3434 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3440 if (ifconf
.ifc_len
== buf_size
)
3444 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3447 while (--ifaces
>= 0)
3449 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3450 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3451 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3453 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3454 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3455 res
= Fcons (Fcons (build_string (namebuf
),
3456 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3457 sizeof (struct sockaddr
))),
3463 #endif /* SIOCGIFCONF */
3465 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3472 static struct ifflag_def ifflag_table
[] = {
3476 #ifdef IFF_BROADCAST
3477 { IFF_BROADCAST
, "broadcast" },
3480 { IFF_DEBUG
, "debug" },
3483 { IFF_LOOPBACK
, "loopback" },
3485 #ifdef IFF_POINTOPOINT
3486 { IFF_POINTOPOINT
, "pointopoint" },
3489 { IFF_RUNNING
, "running" },
3492 { IFF_NOARP
, "noarp" },
3495 { IFF_PROMISC
, "promisc" },
3497 #ifdef IFF_NOTRAILERS
3498 { IFF_NOTRAILERS
, "notrailers" },
3501 { IFF_ALLMULTI
, "allmulti" },
3504 { IFF_MASTER
, "master" },
3507 { IFF_SLAVE
, "slave" },
3509 #ifdef IFF_MULTICAST
3510 { IFF_MULTICAST
, "multicast" },
3513 { IFF_PORTSEL
, "portsel" },
3515 #ifdef IFF_AUTOMEDIA
3516 { IFF_AUTOMEDIA
, "automedia" },
3519 { IFF_DYNAMIC
, "dynamic" },
3524 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3525 doc
: /* Return information about network interface named IFNAME.
3526 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3527 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3528 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3529 FLAGS is the current flags of the interface. */)
3534 Lisp_Object res
= Qnil
;
3539 CHECK_STRING (ifname
);
3541 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3542 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3544 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3549 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3550 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3552 int flags
= rq
.ifr_flags
;
3553 struct ifflag_def
*fp
;
3557 for (fp
= ifflag_table
; flags
!= 0 && fp
; fp
++)
3559 if (flags
& fp
->flag_bit
)
3561 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3562 flags
-= fp
->flag_bit
;
3565 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3567 if (flags
& (1 << fnum
))
3569 elt
= Fcons (make_number (fnum
), elt
);
3574 res
= Fcons (elt
, res
);
3577 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3578 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3580 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3581 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3585 for (n
= 0; n
< 6; n
++)
3586 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3587 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3590 res
= Fcons (elt
, res
);
3593 #if defined(SIOCGIFNETMASK) && defined(ifr_netmask)
3594 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3597 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3600 res
= Fcons (elt
, res
);
3603 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3604 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3607 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3610 res
= Fcons (elt
, res
);
3613 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3614 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3617 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3620 res
= Fcons (elt
, res
);
3624 return any
? res
: Qnil
;
3627 #endif /* HAVE_SOCKETS */
3629 /* Turn off input and output for process PROC. */
3632 deactivate_process (proc
)
3635 register int inchannel
, outchannel
;
3636 register struct Lisp_Process
*p
= XPROCESS (proc
);
3638 inchannel
= XINT (p
->infd
);
3639 outchannel
= XINT (p
->outfd
);
3641 #ifdef ADAPTIVE_READ_BUFFERING
3642 if (XINT (p
->read_output_delay
) > 0)
3644 if (--process_output_delay_count
< 0)
3645 process_output_delay_count
= 0;
3646 XSETINT (p
->read_output_delay
, 0);
3647 p
->read_output_skip
= Qnil
;
3653 /* Beware SIGCHLD hereabouts. */
3654 flush_pending_output (inchannel
);
3657 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3658 sys$
dassgn (outchannel
);
3659 vs
= get_vms_process_pointer (p
->pid
);
3661 give_back_vms_process_stuff (vs
);
3664 emacs_close (inchannel
);
3665 if (outchannel
>= 0 && outchannel
!= inchannel
)
3666 emacs_close (outchannel
);
3669 XSETINT (p
->infd
, -1);
3670 XSETINT (p
->outfd
, -1);
3671 #ifdef DATAGRAM_SOCKETS
3672 if (DATAGRAM_CHAN_P (inchannel
))
3674 xfree (datagram_address
[inchannel
].sa
);
3675 datagram_address
[inchannel
].sa
= 0;
3676 datagram_address
[inchannel
].len
= 0;
3679 chan_process
[inchannel
] = Qnil
;
3680 FD_CLR (inchannel
, &input_wait_mask
);
3681 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3682 #ifdef NON_BLOCKING_CONNECT
3683 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3685 FD_CLR (inchannel
, &connect_wait_mask
);
3686 if (--num_pending_connects
< 0)
3690 if (inchannel
== max_process_desc
)
3693 /* We just closed the highest-numbered process input descriptor,
3694 so recompute the highest-numbered one now. */
3695 max_process_desc
= 0;
3696 for (i
= 0; i
< MAXDESC
; i
++)
3697 if (!NILP (chan_process
[i
]))
3698 max_process_desc
= i
;
3703 /* Close all descriptors currently in use for communication
3704 with subprocess. This is used in a newly-forked subprocess
3705 to get rid of irrelevant descriptors. */
3708 close_process_descs ()
3712 for (i
= 0; i
< MAXDESC
; i
++)
3714 Lisp_Object process
;
3715 process
= chan_process
[i
];
3716 if (!NILP (process
))
3718 int in
= XINT (XPROCESS (process
)->infd
);
3719 int out
= XINT (XPROCESS (process
)->outfd
);
3722 if (out
>= 0 && in
!= out
)
3729 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3731 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3732 It is read into the process' buffers or given to their filter functions.
3733 Non-nil arg PROCESS means do not return until some output has been received
3735 Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of
3736 seconds and microseconds to wait; return after that much time whether
3737 or not there is input.
3738 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3739 from PROCESS, suspending reading output from other processes.
3740 If JUST-THIS-ONE is an integer, don't run any timers either.
3741 Return non-nil iff we received any output before the timeout expired. */)
3742 (process
, timeout
, timeout_msecs
, just_this_one
)
3743 register Lisp_Object process
, timeout
, timeout_msecs
, just_this_one
;
3748 if (! NILP (process
))
3749 CHECK_PROCESS (process
);
3751 just_this_one
= Qnil
;
3753 if (! NILP (timeout_msecs
))
3755 CHECK_NUMBER (timeout_msecs
);
3756 useconds
= XINT (timeout_msecs
);
3757 if (!INTEGERP (timeout
))
3758 XSETINT (timeout
, 0);
3761 int carry
= useconds
/ 1000000;
3763 XSETINT (timeout
, XINT (timeout
) + carry
);
3764 useconds
-= carry
* 1000000;
3766 /* I think this clause is necessary because C doesn't
3767 guarantee a particular rounding direction for negative
3771 XSETINT (timeout
, XINT (timeout
) - 1);
3772 useconds
+= 1000000;
3779 if (! NILP (timeout
))
3781 CHECK_NUMBER (timeout
);
3782 seconds
= XINT (timeout
);
3783 if (seconds
< 0 || (seconds
== 0 && useconds
== 0))
3787 seconds
= NILP (process
) ? -1 : 0;
3790 (wait_reading_process_output (seconds
, useconds
, 0, 0,
3792 !NILP (process
) ? XPROCESS (process
) : NULL
,
3793 NILP (just_this_one
) ? 0 :
3794 !INTEGERP (just_this_one
) ? 1 : -1)
3798 /* Accept a connection for server process SERVER on CHANNEL. */
3800 static int connect_counter
= 0;
3803 server_accept_connection (server
, channel
)
3807 Lisp_Object proc
, caller
, name
, buffer
;
3808 Lisp_Object contact
, host
, service
;
3809 struct Lisp_Process
*ps
= XPROCESS (server
);
3810 struct Lisp_Process
*p
;
3814 struct sockaddr_in in
;
3815 #ifdef HAVE_LOCAL_SOCKETS
3816 struct sockaddr_un un
;
3819 int len
= sizeof saddr
;
3821 s
= accept (channel
, &saddr
.sa
, &len
);
3830 if (code
== EWOULDBLOCK
)
3834 if (!NILP (ps
->log
))
3835 call3 (ps
->log
, server
, Qnil
,
3836 concat3 (build_string ("accept failed with code"),
3837 Fnumber_to_string (make_number (code
)),
3838 build_string ("\n")));
3844 /* Setup a new process to handle the connection. */
3846 /* Generate a unique identification of the caller, and build contact
3847 information for this process. */
3850 switch (saddr
.sa
.sa_family
)
3854 Lisp_Object args
[5];
3855 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
3856 args
[0] = build_string ("%d.%d.%d.%d");
3857 args
[1] = make_number (*ip
++);
3858 args
[2] = make_number (*ip
++);
3859 args
[3] = make_number (*ip
++);
3860 args
[4] = make_number (*ip
++);
3861 host
= Fformat (5, args
);
3862 service
= make_number (ntohs (saddr
.in
.sin_port
));
3864 args
[0] = build_string (" <%s:%d>");
3867 caller
= Fformat (3, args
);
3871 #ifdef HAVE_LOCAL_SOCKETS
3875 caller
= Fnumber_to_string (make_number (connect_counter
));
3876 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
3880 /* Create a new buffer name for this process if it doesn't have a
3881 filter. The new buffer name is based on the buffer name or
3882 process name of the server process concatenated with the caller
3885 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
3889 buffer
= ps
->buffer
;
3891 buffer
= Fbuffer_name (buffer
);
3896 buffer
= concat2 (buffer
, caller
);
3897 buffer
= Fget_buffer_create (buffer
);
3901 /* Generate a unique name for the new server process. Combine the
3902 server process name with the caller identification. */
3904 name
= concat2 (ps
->name
, caller
);
3905 proc
= make_process (name
);
3907 chan_process
[s
] = proc
;
3910 fcntl (s
, F_SETFL
, O_NONBLOCK
);
3913 fcntl (s
, F_SETFL
, O_NDELAY
);
3917 p
= XPROCESS (proc
);
3919 /* Build new contact information for this setup. */
3920 contact
= Fcopy_sequence (ps
->childp
);
3921 contact
= Fplist_put (contact
, QCserver
, Qnil
);
3922 contact
= Fplist_put (contact
, QChost
, host
);
3923 if (!NILP (service
))
3924 contact
= Fplist_put (contact
, QCservice
, service
);
3925 contact
= Fplist_put (contact
, QCremote
,
3926 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3927 #ifdef HAVE_GETSOCKNAME
3929 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
3930 contact
= Fplist_put (contact
, QClocal
,
3931 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3934 p
->childp
= contact
;
3935 p
->plist
= Fcopy_sequence (ps
->plist
);
3938 p
->sentinel
= ps
->sentinel
;
3939 p
->filter
= ps
->filter
;
3942 XSETINT (p
->infd
, s
);
3943 XSETINT (p
->outfd
, s
);
3946 /* Client processes for accepted connections are not stopped initially. */
3947 if (!EQ (p
->filter
, Qt
))
3949 FD_SET (s
, &input_wait_mask
);
3950 FD_SET (s
, &non_keyboard_wait_mask
);
3953 if (s
> max_process_desc
)
3954 max_process_desc
= s
;
3956 /* Setup coding system for new process based on server process.
3957 This seems to be the proper thing to do, as the coding system
3958 of the new process should reflect the settings at the time the
3959 server socket was opened; not the current settings. */
3961 p
->decode_coding_system
= ps
->decode_coding_system
;
3962 p
->encode_coding_system
= ps
->encode_coding_system
;
3963 setup_process_coding_systems (proc
);
3965 p
->decoding_buf
= make_uninit_string (0);
3966 p
->decoding_carryover
= make_number (0);
3967 p
->encoding_buf
= make_uninit_string (0);
3968 p
->encoding_carryover
= make_number (0);
3970 p
->inherit_coding_system_flag
3971 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
3973 if (!NILP (ps
->log
))
3974 call3 (ps
->log
, server
, proc
,
3975 concat3 (build_string ("accept from "),
3976 (STRINGP (host
) ? host
: build_string ("-")),
3977 build_string ("\n")));
3979 if (!NILP (p
->sentinel
))
3980 exec_sentinel (proc
,
3981 concat3 (build_string ("open from "),
3982 (STRINGP (host
) ? host
: build_string ("-")),
3983 build_string ("\n")));
3986 /* This variable is different from waiting_for_input in keyboard.c.
3987 It is used to communicate to a lisp process-filter/sentinel (via the
3988 function Fwaiting_for_user_input_p below) whether Emacs was waiting
3989 for user-input when that process-filter was called.
3990 waiting_for_input cannot be used as that is by definition 0 when
3991 lisp code is being evalled.
3992 This is also used in record_asynch_buffer_change.
3993 For that purpose, this must be 0
3994 when not inside wait_reading_process_output. */
3995 static int waiting_for_user_input_p
;
3997 /* This is here so breakpoints can be put on it. */
3999 wait_reading_process_output_1 ()
4003 /* Read and dispose of subprocess output while waiting for timeout to
4004 elapse and/or keyboard input to be available.
4007 timeout in seconds, or
4008 zero for no limit, or
4009 -1 means gobble data immediately available but don't wait for any.
4012 an additional duration to wait, measured in microseconds.
4013 If this is nonzero and time_limit is 0, then the timeout
4014 consists of MICROSECS only.
4016 READ_KBD is a lisp value:
4017 0 to ignore keyboard input, or
4018 1 to return when input is available, or
4019 -1 meaning caller will actually read the input, so don't throw to
4020 the quit handler, or
4022 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4023 output that arrives.
4025 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4026 (and gobble terminal input into the buffer if any arrives).
4028 If WAIT_PROC is specified, wait until something arrives from that
4029 process. The return value is true iff we read some input from
4032 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4033 (suspending output from other processes). A negative value
4034 means don't run any timers either.
4036 If WAIT_PROC is specified, then the function returns true iff we
4037 received input from that process before the timeout elapsed.
4038 Otherwise, return true iff we received input from any process. */
4041 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4042 wait_for_cell
, wait_proc
, just_wait_proc
)
4043 int time_limit
, microsecs
, read_kbd
, do_display
;
4044 Lisp_Object wait_for_cell
;
4045 struct Lisp_Process
*wait_proc
;
4048 register int channel
, nfds
;
4049 SELECT_TYPE Available
;
4050 #ifdef NON_BLOCKING_CONNECT
4051 SELECT_TYPE Connecting
;
4054 int check_delay
, no_avail
;
4057 EMACS_TIME timeout
, end_time
;
4058 int wait_channel
= -1;
4059 int got_some_input
= 0;
4060 /* Either nil or a cons cell, the car of which is of interest and
4061 may be changed outside of this routine. */
4062 int saved_waiting_for_user_input_p
= waiting_for_user_input_p
;
4064 FD_ZERO (&Available
);
4065 #ifdef NON_BLOCKING_CONNECT
4066 FD_ZERO (&Connecting
);
4069 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4070 if (wait_proc
!= NULL
)
4071 wait_channel
= XINT (wait_proc
->infd
);
4073 waiting_for_user_input_p
= read_kbd
;
4075 /* Since we may need to wait several times,
4076 compute the absolute time to return at. */
4077 if (time_limit
|| microsecs
)
4079 EMACS_GET_TIME (end_time
);
4080 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4081 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4083 #ifdef POLL_INTERRUPTED_SYS_CALL
4084 /* AlainF 5-Jul-1996
4085 HP-UX 10.10 seem to have problems with signals coming in
4086 Causes "poll: interrupted system call" messages when Emacs is run
4088 Turn off periodic alarms (in case they are in use),
4089 and then turn off any other atimers. */
4091 turn_on_atimers (0);
4092 #endif /* POLL_INTERRUPTED_SYS_CALL */
4096 int timeout_reduced_for_timers
= 0;
4098 /* If calling from keyboard input, do not quit
4099 since we want to return C-g as an input character.
4100 Otherwise, do pending quit if requested. */
4104 else if (interrupt_input_pending
)
4105 handle_async_input ();
4108 /* Exit now if the cell we're waiting for became non-nil. */
4109 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4112 /* Compute time from now till when time limit is up */
4113 /* Exit if already run out */
4114 if (time_limit
== -1)
4116 /* -1 specified for timeout means
4117 gobble output available now
4118 but don't wait at all. */
4120 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4122 else if (time_limit
|| microsecs
)
4124 EMACS_GET_TIME (timeout
);
4125 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4126 if (EMACS_TIME_NEG_P (timeout
))
4131 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4134 /* Normally we run timers here.
4135 But not if wait_for_cell; in those cases,
4136 the wait is supposed to be short,
4137 and those callers cannot handle running arbitrary Lisp code here. */
4138 if (NILP (wait_for_cell
)
4139 && just_wait_proc
>= 0)
4141 EMACS_TIME timer_delay
;
4145 int old_timers_run
= timers_run
;
4146 struct buffer
*old_buffer
= current_buffer
;
4148 timer_delay
= timer_check (1);
4150 /* If a timer has run, this might have changed buffers
4151 an alike. Make read_key_sequence aware of that. */
4152 if (timers_run
!= old_timers_run
4153 && old_buffer
!= current_buffer
4154 && waiting_for_user_input_p
== -1)
4155 record_asynch_buffer_change ();
4157 if (timers_run
!= old_timers_run
&& do_display
)
4158 /* We must retry, since a timer may have requeued itself
4159 and that could alter the time_delay. */
4160 redisplay_preserve_echo_area (9);
4164 while (!detect_input_pending ());
4166 /* If there is unread keyboard input, also return. */
4168 && requeued_events_pending_p ())
4171 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4173 EMACS_TIME difference
;
4174 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4175 if (EMACS_TIME_NEG_P (difference
))
4177 timeout
= timer_delay
;
4178 timeout_reduced_for_timers
= 1;
4181 /* If time_limit is -1, we are not going to wait at all. */
4182 else if (time_limit
!= -1)
4184 /* This is so a breakpoint can be put here. */
4185 wait_reading_process_output_1 ();
4189 /* Cause C-g and alarm signals to take immediate action,
4190 and cause input available signals to zero out timeout.
4192 It is important that we do this before checking for process
4193 activity. If we get a SIGCHLD after the explicit checks for
4194 process activity, timeout is the only way we will know. */
4196 set_waiting_for_input (&timeout
);
4198 /* If status of something has changed, and no input is
4199 available, notify the user of the change right away. After
4200 this explicit check, we'll let the SIGCHLD handler zap
4201 timeout to get our attention. */
4202 if (update_tick
!= process_tick
&& do_display
)
4205 #ifdef NON_BLOCKING_CONNECT
4209 Atemp
= input_wait_mask
;
4211 /* On Mac OS X 10.0, the SELECT system call always says input is
4212 present (for reading) at stdin, even when none is. This
4213 causes the call to SELECT below to return 1 and
4214 status_notify not to be called. As a result output of
4215 subprocesses are incorrectly discarded.
4219 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4221 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4222 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4224 #ifdef NON_BLOCKING_CONNECT
4225 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4229 (SELECT_TYPE
*)0, &timeout
)
4232 /* It's okay for us to do this and then continue with
4233 the loop, since timeout has already been zeroed out. */
4234 clear_waiting_for_input ();
4239 /* Don't wait for output from a non-running process. Just
4240 read whatever data has already been received. */
4241 if (wait_proc
!= 0 && !NILP (wait_proc
->raw_status_low
))
4242 update_status (wait_proc
);
4244 && ! EQ (wait_proc
->status
, Qrun
)
4245 && ! EQ (wait_proc
->status
, Qconnect
))
4247 int nread
, total_nread
= 0;
4249 clear_waiting_for_input ();
4250 XSETPROCESS (proc
, wait_proc
);
4252 /* Read data from the process, until we exhaust it. */
4253 while (XINT (wait_proc
->infd
) >= 0)
4255 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4261 total_nread
+= nread
;
4263 else if (nread
== -1 && EIO
== errno
)
4267 else if (nread
== -1 && EAGAIN
== errno
)
4271 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4275 if (total_nread
> 0 && do_display
)
4276 redisplay_preserve_echo_area (10);
4281 /* Wait till there is something to do */
4283 if (wait_proc
&& just_wait_proc
)
4285 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4287 FD_SET (XINT (wait_proc
->infd
), &Available
);
4289 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4291 else if (!NILP (wait_for_cell
))
4293 Available
= non_process_wait_mask
;
4295 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4300 Available
= non_keyboard_wait_mask
;
4302 Available
= input_wait_mask
;
4303 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4304 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4307 /* If frame size has changed or the window is newly mapped,
4308 redisplay now, before we start to wait. There is a race
4309 condition here; if a SIGIO arrives between now and the select
4310 and indicates that a frame is trashed, the select may block
4311 displaying a trashed screen. */
4312 if (frame_garbaged
&& do_display
)
4314 clear_waiting_for_input ();
4315 redisplay_preserve_echo_area (11);
4317 set_waiting_for_input (&timeout
);
4321 if (read_kbd
&& detect_input_pending ())
4328 #ifdef NON_BLOCKING_CONNECT
4330 Connecting
= connect_wait_mask
;
4333 #ifdef ADAPTIVE_READ_BUFFERING
4334 if (process_output_skip
&& check_delay
> 0)
4336 int usecs
= EMACS_USECS (timeout
);
4337 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4338 usecs
= READ_OUTPUT_DELAY_MAX
;
4339 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4341 proc
= chan_process
[channel
];
4344 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4347 if (NILP (XPROCESS (proc
)->read_output_skip
))
4349 FD_CLR (channel
, &Available
);
4350 XPROCESS (proc
)->read_output_skip
= Qnil
;
4351 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4352 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4355 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4356 process_output_skip
= 0;
4360 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4362 #ifdef NON_BLOCKING_CONNECT
4363 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4367 (SELECT_TYPE
*)0, &timeout
);
4372 /* Make C-g and alarm signals set flags again */
4373 clear_waiting_for_input ();
4375 /* If we woke up due to SIGWINCH, actually change size now. */
4376 do_pending_window_change (0);
4378 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4379 /* We wanted the full specified time, so return now. */
4383 if (xerrno
== EINTR
)
4386 /* Ultrix select seems to return ENOMEM when it is
4387 interrupted. Treat it just like EINTR. Bleah. Note
4388 that we want to test for the "ultrix" CPP symbol, not
4389 "__ultrix__"; the latter is only defined under GCC, but
4390 not by DEC's bundled CC. -JimB */
4391 else if (xerrno
== ENOMEM
)
4395 /* This happens for no known reason on ALLIANT.
4396 I am guessing that this is the right response. -- RMS. */
4397 else if (xerrno
== EFAULT
)
4400 else if (xerrno
== EBADF
)
4403 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4404 the child's closure of the pts gives the parent a SIGHUP, and
4405 the ptc file descriptor is automatically closed,
4406 yielding EBADF here or at select() call above.
4407 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4408 in m/ibmrt-aix.h), and here we just ignore the select error.
4409 Cleanup occurs c/o status_notify after SIGCLD. */
4410 no_avail
= 1; /* Cannot depend on values returned */
4416 error ("select error: %s", emacs_strerror (xerrno
));
4421 FD_ZERO (&Available
);
4422 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4425 #if defined(sun) && !defined(USG5_4)
4426 if (nfds
> 0 && keyboard_bit_set (&Available
)
4428 /* System sometimes fails to deliver SIGIO.
4430 David J. Mackenzie says that Emacs doesn't compile under
4431 Solaris if this code is enabled, thus the USG5_4 in the CPP
4432 conditional. "I haven't noticed any ill effects so far.
4433 If you find a Solaris expert somewhere, they might know
4435 kill (getpid (), SIGIO
);
4438 #if 0 /* When polling is used, interrupt_input is 0,
4439 so get_input_pending should read the input.
4440 So this should not be needed. */
4441 /* If we are using polling for input,
4442 and we see input available, make it get read now.
4443 Otherwise it might not actually get read for a second.
4444 And on hpux, since we turn off polling in wait_reading_process_output,
4445 it might never get read at all if we don't spend much time
4446 outside of wait_reading_process_output. */
4447 if (read_kbd
&& interrupt_input
4448 && keyboard_bit_set (&Available
)
4449 && input_polling_used ())
4450 kill (getpid (), SIGALRM
);
4453 /* Check for keyboard input */
4454 /* If there is any, return immediately
4455 to give it higher priority than subprocesses */
4459 int old_timers_run
= timers_run
;
4460 struct buffer
*old_buffer
= current_buffer
;
4463 if (detect_input_pending_run_timers (do_display
))
4465 swallow_events (do_display
);
4466 if (detect_input_pending_run_timers (do_display
))
4470 /* If a timer has run, this might have changed buffers
4471 an alike. Make read_key_sequence aware of that. */
4472 if (timers_run
!= old_timers_run
4473 && waiting_for_user_input_p
== -1
4474 && old_buffer
!= current_buffer
)
4475 record_asynch_buffer_change ();
4481 /* If there is unread keyboard input, also return. */
4483 && requeued_events_pending_p ())
4486 /* If we are not checking for keyboard input now,
4487 do process events (but don't run any timers).
4488 This is so that X events will be processed.
4489 Otherwise they may have to wait until polling takes place.
4490 That would causes delays in pasting selections, for example.
4492 (We used to do this only if wait_for_cell.) */
4493 if (read_kbd
== 0 && detect_input_pending ())
4495 swallow_events (do_display
);
4496 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4497 if (detect_input_pending ())
4502 /* Exit now if the cell we're waiting for became non-nil. */
4503 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4507 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4508 go read it. This can happen with X on BSD after logging out.
4509 In that case, there really is no input and no SIGIO,
4510 but select says there is input. */
4512 if (read_kbd
&& interrupt_input
4513 && keyboard_bit_set (&Available
) && ! noninteractive
)
4514 kill (getpid (), SIGIO
);
4518 got_some_input
|= nfds
> 0;
4520 /* If checking input just got us a size-change event from X,
4521 obey it now if we should. */
4522 if (read_kbd
|| ! NILP (wait_for_cell
))
4523 do_pending_window_change (0);
4525 /* Check for data from a process. */
4526 if (no_avail
|| nfds
== 0)
4529 /* Really FIRST_PROC_DESC should be 0 on Unix,
4530 but this is safer in the short run. */
4531 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4533 if (FD_ISSET (channel
, &Available
)
4534 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4538 /* If waiting for this channel, arrange to return as
4539 soon as no more input to be processed. No more
4541 if (wait_channel
== channel
)
4547 proc
= chan_process
[channel
];
4551 /* If this is a server stream socket, accept connection. */
4552 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4554 server_accept_connection (proc
, channel
);
4558 /* Read data from the process, starting with our
4559 buffered-ahead character if we have one. */
4561 nread
= read_process_output (proc
, channel
);
4564 /* Since read_process_output can run a filter,
4565 which can call accept-process-output,
4566 don't try to read from any other processes
4567 before doing the select again. */
4568 FD_ZERO (&Available
);
4571 redisplay_preserve_echo_area (12);
4574 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4577 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4578 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4580 else if (nread
== -1 && errno
== EAGAIN
)
4584 else if (nread
== -1 && errno
== EAGAIN
)
4586 /* Note that we cannot distinguish between no input
4587 available now and a closed pipe.
4588 With luck, a closed pipe will be accompanied by
4589 subprocess termination and SIGCHLD. */
4590 else if (nread
== 0 && !NETCONN_P (proc
))
4592 #endif /* O_NDELAY */
4593 #endif /* O_NONBLOCK */
4595 /* On some OSs with ptys, when the process on one end of
4596 a pty exits, the other end gets an error reading with
4597 errno = EIO instead of getting an EOF (0 bytes read).
4598 Therefore, if we get an error reading and errno =
4599 EIO, just continue, because the child process has
4600 exited and should clean itself up soon (e.g. when we
4603 However, it has been known to happen that the SIGCHLD
4604 got lost. So raise the signl again just in case.
4606 else if (nread
== -1 && errno
== EIO
)
4607 kill (getpid (), SIGCHLD
);
4608 #endif /* HAVE_PTYS */
4609 /* If we can detect process termination, don't consider the process
4610 gone just because its pipe is closed. */
4612 else if (nread
== 0 && !NETCONN_P (proc
))
4617 /* Preserve status of processes already terminated. */
4618 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4619 deactivate_process (proc
);
4620 if (!NILP (XPROCESS (proc
)->raw_status_low
))
4621 update_status (XPROCESS (proc
));
4622 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4623 XPROCESS (proc
)->status
4624 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4627 #ifdef NON_BLOCKING_CONNECT
4628 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4629 && FD_ISSET (channel
, &connect_wait_mask
))
4631 struct Lisp_Process
*p
;
4633 FD_CLR (channel
, &connect_wait_mask
);
4634 if (--num_pending_connects
< 0)
4637 proc
= chan_process
[channel
];
4641 p
= XPROCESS (proc
);
4644 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4645 So only use it on systems where it is known to work. */
4647 int xlen
= sizeof(xerrno
);
4648 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4653 struct sockaddr pname
;
4654 int pnamelen
= sizeof(pname
);
4656 /* If connection failed, getpeername will fail. */
4658 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4660 /* Obtain connect failure code through error slippage. */
4663 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4670 XSETINT (p
->tick
, ++process_tick
);
4671 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4672 deactivate_process (proc
);
4677 /* Execute the sentinel here. If we had relied on
4678 status_notify to do it later, it will read input
4679 from the process before calling the sentinel. */
4680 exec_sentinel (proc
, build_string ("open\n"));
4681 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4683 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4684 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4688 #endif /* NON_BLOCKING_CONNECT */
4689 } /* end for each file descriptor */
4690 } /* end while exit conditions not met */
4692 waiting_for_user_input_p
= saved_waiting_for_user_input_p
;
4694 /* If calling from keyboard input, do not quit
4695 since we want to return C-g as an input character.
4696 Otherwise, do pending quit if requested. */
4699 /* Prevent input_pending from remaining set if we quit. */
4700 clear_input_pending ();
4703 #ifdef POLL_INTERRUPTED_SYS_CALL
4704 /* AlainF 5-Jul-1996
4705 HP-UX 10.10 seems to have problems with signals coming in
4706 Causes "poll: interrupted system call" messages when Emacs is run
4708 Turn periodic alarms back on */
4710 #endif /* POLL_INTERRUPTED_SYS_CALL */
4712 return got_some_input
;
4715 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4718 read_process_output_call (fun_and_args
)
4719 Lisp_Object fun_and_args
;
4721 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4725 read_process_output_error_handler (error
)
4728 cmd_error_internal (error
, "error in process filter: ");
4730 update_echo_area ();
4731 Fsleep_for (make_number (2), Qnil
);
4735 /* Read pending output from the process channel,
4736 starting with our buffered-ahead character if we have one.
4737 Yield number of decoded characters read.
4739 This function reads at most 4096 characters.
4740 If you want to read all available subprocess output,
4741 you must call it repeatedly until it returns zero.
4743 The characters read are decoded according to PROC's coding-system
4747 read_process_output (proc
, channel
)
4749 register int channel
;
4751 register int nbytes
;
4753 register Lisp_Object outstream
;
4754 register struct buffer
*old
= current_buffer
;
4755 register struct Lisp_Process
*p
= XPROCESS (proc
);
4756 register int opoint
;
4757 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4758 int carryover
= XINT (p
->decoding_carryover
);
4762 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4764 vs
= get_vms_process_pointer (p
->pid
);
4768 return (0); /* Really weird if it does this */
4769 if (!(vs
->iosb
[0] & 1))
4770 return -1; /* I/O error */
4773 error ("Could not get VMS process pointer");
4774 chars
= vs
->inputBuffer
;
4775 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4778 start_vms_process_read (vs
); /* Crank up the next read on the process */
4779 return 1; /* Nothing worth printing, say we got 1 */
4783 /* The data carried over in the previous decoding (which are at
4784 the tail of decoding buffer) should be prepended to the new
4785 data read to decode all together. */
4786 chars
= (char *) alloca (nbytes
+ carryover
);
4787 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
4788 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
4792 chars
= (char *) alloca (carryover
+ readmax
);
4794 /* See the comment above. */
4795 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
4797 #ifdef DATAGRAM_SOCKETS
4798 /* We have a working select, so proc_buffered_char is always -1. */
4799 if (DATAGRAM_CHAN_P (channel
))
4801 int len
= datagram_address
[channel
].len
;
4802 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4803 0, datagram_address
[channel
].sa
, &len
);
4807 if (proc_buffered_char
[channel
] < 0)
4809 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
4810 #ifdef ADAPTIVE_READ_BUFFERING
4811 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
4813 int delay
= XINT (p
->read_output_delay
);
4816 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4819 process_output_delay_count
++;
4820 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
4823 else if (delay
> 0 && (nbytes
== readmax
))
4825 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
4827 process_output_delay_count
--;
4829 XSETINT (p
->read_output_delay
, delay
);
4832 p
->read_output_skip
= Qt
;
4833 process_output_skip
= 1;
4840 chars
[carryover
] = proc_buffered_char
[channel
];
4841 proc_buffered_char
[channel
] = -1;
4842 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
4846 nbytes
= nbytes
+ 1;
4848 #endif /* not VMS */
4850 XSETINT (p
->decoding_carryover
, 0);
4852 /* At this point, NBYTES holds number of bytes just received
4853 (including the one in proc_buffered_char[channel]). */
4856 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
4858 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
4861 /* Now set NBYTES how many bytes we must decode. */
4862 nbytes
+= carryover
;
4864 /* Read and dispose of the process output. */
4865 outstream
= p
->filter
;
4866 if (!NILP (outstream
))
4868 /* We inhibit quit here instead of just catching it so that
4869 hitting ^G when a filter happens to be running won't screw
4871 int count
= SPECPDL_INDEX ();
4872 Lisp_Object odeactivate
;
4873 Lisp_Object obuffer
, okeymap
;
4875 int outer_running_asynch_code
= running_asynch_code
;
4876 int waiting
= waiting_for_user_input_p
;
4878 /* No need to gcpro these, because all we do with them later
4879 is test them for EQness, and none of them should be a string. */
4880 odeactivate
= Vdeactivate_mark
;
4881 XSETBUFFER (obuffer
, current_buffer
);
4882 okeymap
= current_buffer
->keymap
;
4884 specbind (Qinhibit_quit
, Qt
);
4885 specbind (Qlast_nonmenu_event
, Qt
);
4887 /* In case we get recursively called,
4888 and we already saved the match data nonrecursively,
4889 save the same match data in safely recursive fashion. */
4890 if (outer_running_asynch_code
)
4893 /* Don't clobber the CURRENT match data, either! */
4894 tem
= Fmatch_data (Qnil
, Qnil
);
4895 restore_match_data ();
4896 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
4897 Fset_match_data (tem
);
4900 /* For speed, if a search happens within this code,
4901 save the match data in a special nonrecursive fashion. */
4902 running_asynch_code
= 1;
4904 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
4905 text
= coding
->dst_object
;
4906 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
4907 /* A new coding system might be found. */
4908 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
4910 p
->decode_coding_system
= Vlast_coding_system_used
;
4912 /* Don't call setup_coding_system for
4913 proc_decode_coding_system[channel] here. It is done in
4914 detect_coding called via decode_coding above. */
4916 /* If a coding system for encoding is not yet decided, we set
4917 it as the same as coding-system for decoding.
4919 But, before doing that we must check if
4920 proc_encode_coding_system[p->outfd] surely points to a
4921 valid memory because p->outfd will be changed once EOF is
4922 sent to the process. */
4923 if (NILP (p
->encode_coding_system
)
4924 && proc_encode_coding_system
[XINT (p
->outfd
)])
4926 p
->encode_coding_system
= Vlast_coding_system_used
;
4927 setup_coding_system (p
->encode_coding_system
,
4928 proc_encode_coding_system
[XINT (p
->outfd
)]);
4932 if (coding
->carryover_bytes
> 0)
4934 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
4935 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
4936 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
4937 coding
->carryover_bytes
);
4938 XSETINT (p
->decoding_carryover
, coding
->carryover_bytes
);
4940 /* Adjust the multibyteness of TEXT to that of the filter. */
4941 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
4942 text
= (STRING_MULTIBYTE (text
)
4943 ? Fstring_as_unibyte (text
)
4944 : Fstring_to_multibyte (text
));
4945 if (SBYTES (text
) > 0)
4946 internal_condition_case_1 (read_process_output_call
,
4948 Fcons (proc
, Fcons (text
, Qnil
))),
4949 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
4950 read_process_output_error_handler
);
4952 /* If we saved the match data nonrecursively, restore it now. */
4953 restore_match_data ();
4954 running_asynch_code
= outer_running_asynch_code
;
4956 /* Handling the process output should not deactivate the mark. */
4957 Vdeactivate_mark
= odeactivate
;
4959 /* Restore waiting_for_user_input_p as it was
4960 when we were called, in case the filter clobbered it. */
4961 waiting_for_user_input_p
= waiting
;
4963 #if 0 /* Call record_asynch_buffer_change unconditionally,
4964 because we might have changed minor modes or other things
4965 that affect key bindings. */
4966 if (! EQ (Fcurrent_buffer (), obuffer
)
4967 || ! EQ (current_buffer
->keymap
, okeymap
))
4969 /* But do it only if the caller is actually going to read events.
4970 Otherwise there's no need to make him wake up, and it could
4971 cause trouble (for example it would make Fsit_for return). */
4972 if (waiting_for_user_input_p
== -1)
4973 record_asynch_buffer_change ();
4976 start_vms_process_read (vs
);
4978 unbind_to (count
, Qnil
);
4982 /* If no filter, write into buffer if it isn't dead. */
4983 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
4985 Lisp_Object old_read_only
;
4986 int old_begv
, old_zv
;
4987 int old_begv_byte
, old_zv_byte
;
4988 Lisp_Object odeactivate
;
4989 int before
, before_byte
;
4994 odeactivate
= Vdeactivate_mark
;
4996 Fset_buffer (p
->buffer
);
4998 opoint_byte
= PT_BYTE
;
4999 old_read_only
= current_buffer
->read_only
;
5002 old_begv_byte
= BEGV_BYTE
;
5003 old_zv_byte
= ZV_BYTE
;
5005 current_buffer
->read_only
= Qnil
;
5007 /* Insert new output into buffer
5008 at the current end-of-output marker,
5009 thus preserving logical ordering of input and output. */
5010 if (XMARKER (p
->mark
)->buffer
)
5011 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5012 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5015 SET_PT_BOTH (ZV
, ZV_BYTE
);
5017 before_byte
= PT_BYTE
;
5019 /* If the output marker is outside of the visible region, save
5020 the restriction and widen. */
5021 if (! (BEGV
<= PT
&& PT
<= ZV
))
5024 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5025 text
= coding
->dst_object
;
5026 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5027 /* A new coding system might be found. See the comment in the
5028 similar code in the previous `if' block. */
5029 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5031 p
->decode_coding_system
= Vlast_coding_system_used
;
5032 if (NILP (p
->encode_coding_system
)
5033 && proc_encode_coding_system
[XINT (p
->outfd
)])
5035 p
->encode_coding_system
= Vlast_coding_system_used
;
5036 setup_coding_system (p
->encode_coding_system
,
5037 proc_encode_coding_system
[XINT (p
->outfd
)]);
5040 if (coding
->carryover_bytes
> 0)
5042 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5043 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5044 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5045 coding
->carryover_bytes
);
5046 XSETINT (p
->decoding_carryover
, coding
->carryover_bytes
);
5048 /* Adjust the multibyteness of TEXT to that of the buffer. */
5049 if (NILP (current_buffer
->enable_multibyte_characters
)
5050 != ! STRING_MULTIBYTE (text
))
5051 text
= (STRING_MULTIBYTE (text
)
5052 ? Fstring_as_unibyte (text
)
5053 : Fstring_to_multibyte (text
));
5054 /* Insert before markers in case we are inserting where
5055 the buffer's mark is, and the user's next command is Meta-y. */
5056 insert_from_string_before_markers (text
, 0, 0,
5057 SCHARS (text
), SBYTES (text
), 0);
5059 /* Make sure the process marker's position is valid when the
5060 process buffer is changed in the signal_after_change above.
5061 W3 is known to do that. */
5062 if (BUFFERP (p
->buffer
)
5063 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5064 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5066 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5068 update_mode_lines
++;
5070 /* Make sure opoint and the old restrictions
5071 float ahead of any new text just as point would. */
5072 if (opoint
>= before
)
5074 opoint
+= PT
- before
;
5075 opoint_byte
+= PT_BYTE
- before_byte
;
5077 if (old_begv
> before
)
5079 old_begv
+= PT
- before
;
5080 old_begv_byte
+= PT_BYTE
- before_byte
;
5082 if (old_zv
>= before
)
5084 old_zv
+= PT
- before
;
5085 old_zv_byte
+= PT_BYTE
- before_byte
;
5088 /* If the restriction isn't what it should be, set it. */
5089 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5090 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5092 /* Handling the process output should not deactivate the mark. */
5093 Vdeactivate_mark
= odeactivate
;
5095 current_buffer
->read_only
= old_read_only
;
5096 SET_PT_BOTH (opoint
, opoint_byte
);
5097 set_buffer_internal (old
);
5100 start_vms_process_read (vs
);
5105 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5107 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5108 This is intended for use by asynchronous process output filters and sentinels. */)
5111 return (waiting_for_user_input_p
? Qt
: Qnil
);
5114 /* Sending data to subprocess */
5116 jmp_buf send_process_frame
;
5117 Lisp_Object process_sent_to
;
5120 send_process_trap ()
5126 longjmp (send_process_frame
, 1);
5129 /* Send some data to process PROC.
5130 BUF is the beginning of the data; LEN is the number of characters.
5131 OBJECT is the Lisp object that the data comes from. If OBJECT is
5132 nil or t, it means that the data comes from C string.
5134 If OBJECT is not nil, the data is encoded by PROC's coding-system
5135 for encoding before it is sent.
5137 This function can evaluate Lisp code and can garbage collect. */
5140 send_process (proc
, buf
, len
, object
)
5141 volatile Lisp_Object proc
;
5142 unsigned char *volatile buf
;
5144 volatile Lisp_Object object
;
5146 /* Use volatile to protect variables from being clobbered by longjmp. */
5147 struct Lisp_Process
*p
= XPROCESS (proc
);
5149 struct coding_system
*coding
;
5150 struct gcpro gcpro1
;
5155 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5158 if (! NILP (p
->raw_status_low
))
5160 if (! EQ (p
->status
, Qrun
))
5161 error ("Process %s not running", SDATA (p
->name
));
5162 if (XINT (p
->outfd
) < 0)
5163 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5165 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5166 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5168 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5169 || (BUFFERP (object
)
5170 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5173 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5174 /* The coding system for encoding was changed to raw-text
5175 because we sent a unibyte text previously. Now we are
5176 sending a multibyte text, thus we must encode it by the
5177 original coding system specified for the current process. */
5178 setup_coding_system (p
->encode_coding_system
, coding
);
5179 coding
->src_multibyte
= 1;
5183 /* For sending a unibyte text, character code conversion should
5184 not take place but EOL conversion should. So, setup raw-text
5185 or one of the subsidiary if we have not yet done it. */
5186 if (CODING_REQUIRE_ENCODING (coding
))
5188 if (CODING_REQUIRE_FLUSHING (coding
))
5190 /* But, before changing the coding, we must flush out data. */
5191 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5192 send_process (proc
, "", 0, Qt
);
5193 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5195 setup_coding_system (raw_text_coding_system
5196 (Vlast_coding_system_used
),
5198 coding
->src_multibyte
= 0;
5201 coding
->dst_multibyte
= 0;
5203 if (CODING_REQUIRE_ENCODING (coding
))
5205 coding
->dst_object
= Qt
;
5206 if (BUFFERP (object
))
5208 int from_byte
, from
, to
;
5209 int save_pt
, save_pt_byte
;
5210 struct buffer
*cur
= current_buffer
;
5212 set_buffer_internal (XBUFFER (object
));
5213 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5215 from_byte
= PTR_BYTE_POS (buf
);
5216 from
= BYTE_TO_CHAR (from_byte
);
5217 to
= BYTE_TO_CHAR (from_byte
+ len
);
5218 TEMP_SET_PT_BOTH (from
, from_byte
);
5219 encode_coding_object (coding
, object
, from
, from_byte
,
5220 to
, from_byte
+ len
, Qt
);
5221 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5222 set_buffer_internal (cur
);
5224 else if (STRINGP (object
))
5226 encode_coding_string (coding
, object
, 1);
5230 coding
->dst_object
= make_unibyte_string (buf
, len
);
5231 coding
->produced
= len
;
5234 len
= coding
->produced
;
5235 buf
= SDATA (coding
->dst_object
);
5239 vs
= get_vms_process_pointer (p
->pid
);
5241 error ("Could not find this process: %x", p
->pid
);
5242 else if (write_to_vms_process (vs
, buf
, len
))
5246 if (pty_max_bytes
== 0)
5248 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5249 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5250 if (pty_max_bytes
< 0)
5251 pty_max_bytes
= 250;
5253 pty_max_bytes
= 250;
5255 /* Deduct one, to leave space for the eof. */
5259 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5260 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5261 when returning with longjmp despite being declared volatile. */
5262 if (!setjmp (send_process_frame
))
5264 process_sent_to
= proc
;
5268 SIGTYPE (*old_sigpipe
)();
5270 /* Decide how much data we can send in one batch.
5271 Long lines need to be split into multiple batches. */
5272 if (!NILP (p
->pty_flag
))
5274 /* Starting this at zero is always correct when not the first
5275 iteration because the previous iteration ended by sending C-d.
5276 It may not be correct for the first iteration
5277 if a partial line was sent in a separate send_process call.
5278 If that proves worth handling, we need to save linepos
5279 in the process object. */
5281 unsigned char *ptr
= (unsigned char *) buf
;
5282 unsigned char *end
= (unsigned char *) buf
+ len
;
5284 /* Scan through this text for a line that is too long. */
5285 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5293 /* If we found one, break the line there
5294 and put in a C-d to force the buffer through. */
5298 /* Send this batch, using one or more write calls. */
5301 int outfd
= XINT (p
->outfd
);
5302 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5303 #ifdef DATAGRAM_SOCKETS
5304 if (DATAGRAM_CHAN_P (outfd
))
5306 rv
= sendto (outfd
, (char *) buf
, this,
5307 0, datagram_address
[outfd
].sa
,
5308 datagram_address
[outfd
].len
);
5309 if (rv
< 0 && errno
== EMSGSIZE
)
5310 report_file_error ("sending datagram", Fcons (proc
, Qnil
));
5315 rv
= emacs_write (outfd
, (char *) buf
, this);
5316 #ifdef ADAPTIVE_READ_BUFFERING
5317 if (XINT (p
->read_output_delay
) > 0
5318 && EQ (p
->adaptive_read_buffering
, Qt
))
5320 XSETFASTINT (p
->read_output_delay
, 0);
5321 process_output_delay_count
--;
5322 p
->read_output_skip
= Qnil
;
5326 signal (SIGPIPE
, old_sigpipe
);
5332 || errno
== EWOULDBLOCK
5338 /* Buffer is full. Wait, accepting input;
5339 that may allow the program
5340 to finish doing output and read more. */
5344 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5345 /* A gross hack to work around a bug in FreeBSD.
5346 In the following sequence, read(2) returns
5350 write(2) 954 bytes, get EAGAIN
5351 read(2) 1024 bytes in process_read_output
5352 read(2) 11 bytes in process_read_output
5354 That is, read(2) returns more bytes than have
5355 ever been written successfully. The 1033 bytes
5356 read are the 1022 bytes written successfully
5357 after processing (for example with CRs added if
5358 the terminal is set up that way which it is
5359 here). The same bytes will be seen again in a
5360 later read(2), without the CRs. */
5362 if (errno
== EAGAIN
)
5365 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5367 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5369 /* Running filters might relocate buffers or strings.
5370 Arrange to relocate BUF. */
5371 if (BUFFERP (object
))
5372 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5373 else if (STRINGP (object
))
5374 offset
= buf
- SDATA (object
);
5376 #ifdef EMACS_HAS_USECS
5377 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5379 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5382 if (BUFFERP (object
))
5383 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5384 else if (STRINGP (object
))
5385 buf
= offset
+ SDATA (object
);
5390 /* This is a real error. */
5391 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5398 /* If we sent just part of the string, put in an EOF
5399 to force it through, before we send the rest. */
5401 Fprocess_send_eof (proc
);
5404 #endif /* not VMS */
5408 proc
= process_sent_to
;
5409 p
= XPROCESS (proc
);
5411 p
->raw_status_low
= Qnil
;
5412 p
->raw_status_high
= Qnil
;
5413 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5414 XSETINT (p
->tick
, ++process_tick
);
5415 deactivate_process (proc
);
5417 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5419 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5426 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5428 doc
: /* Send current contents of region as input to PROCESS.
5429 PROCESS may be a process, a buffer, the name of a process or buffer, or
5430 nil, indicating the current buffer's process.
5431 Called from program, takes three arguments, PROCESS, START and END.
5432 If the region is more than 500 characters long,
5433 it is sent in several bunches. This may happen even for shorter regions.
5434 Output from processes can arrive in between bunches. */)
5435 (process
, start
, end
)
5436 Lisp_Object process
, start
, end
;
5441 proc
= get_process (process
);
5442 validate_region (&start
, &end
);
5444 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5445 move_gap (XINT (start
));
5447 start1
= CHAR_TO_BYTE (XINT (start
));
5448 end1
= CHAR_TO_BYTE (XINT (end
));
5449 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5450 Fcurrent_buffer ());
5455 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5457 doc
: /* Send PROCESS the contents of STRING as input.
5458 PROCESS may be a process, a buffer, the name of a process or buffer, or
5459 nil, indicating the current buffer's process.
5460 If STRING is more than 500 characters long,
5461 it is sent in several bunches. This may happen even for shorter strings.
5462 Output from processes can arrive in between bunches. */)
5464 Lisp_Object process
, string
;
5467 CHECK_STRING (string
);
5468 proc
= get_process (process
);
5469 send_process (proc
, SDATA (string
),
5470 SBYTES (string
), string
);
5474 /* Return the foreground process group for the tty/pty that
5475 the process P uses. */
5477 emacs_get_tty_pgrp (p
)
5478 struct Lisp_Process
*p
;
5483 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5486 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5487 master side. Try the slave side. */
5488 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5492 ioctl (fd
, TIOCGPGRP
, &gid
);
5496 #endif /* defined (TIOCGPGRP ) */
5501 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5502 Sprocess_running_child_p
, 0, 1, 0,
5503 doc
: /* Return t if PROCESS has given the terminal to a child.
5504 If the operating system does not make it possible to find out,
5505 return t unconditionally. */)
5507 Lisp_Object process
;
5509 /* Initialize in case ioctl doesn't exist or gives an error,
5510 in a way that will cause returning t. */
5513 struct Lisp_Process
*p
;
5515 proc
= get_process (process
);
5516 p
= XPROCESS (proc
);
5518 if (!EQ (p
->childp
, Qt
))
5519 error ("Process %s is not a subprocess",
5521 if (XINT (p
->infd
) < 0)
5522 error ("Process %s is not active",
5525 gid
= emacs_get_tty_pgrp (p
);
5527 if (gid
== XFASTINT (p
->pid
))
5532 /* send a signal number SIGNO to PROCESS.
5533 If CURRENT_GROUP is t, that means send to the process group
5534 that currently owns the terminal being used to communicate with PROCESS.
5535 This is used for various commands in shell mode.
5536 If CURRENT_GROUP is lambda, that means send to the process group
5537 that currently owns the terminal, but only if it is NOT the shell itself.
5539 If NOMSG is zero, insert signal-announcements into process's buffers
5542 If we can, we try to signal PROCESS by sending control characters
5543 down the pty. This allows us to signal inferiors who have changed
5544 their uid, for which killpg would return an EPERM error. */
5547 process_send_signal (process
, signo
, current_group
, nomsg
)
5548 Lisp_Object process
;
5550 Lisp_Object current_group
;
5554 register struct Lisp_Process
*p
;
5558 proc
= get_process (process
);
5559 p
= XPROCESS (proc
);
5561 if (!EQ (p
->childp
, Qt
))
5562 error ("Process %s is not a subprocess",
5564 if (XINT (p
->infd
) < 0)
5565 error ("Process %s is not active",
5568 if (NILP (p
->pty_flag
))
5569 current_group
= Qnil
;
5571 /* If we are using pgrps, get a pgrp number and make it negative. */
5572 if (NILP (current_group
))
5573 /* Send the signal to the shell's process group. */
5574 gid
= XFASTINT (p
->pid
);
5577 #ifdef SIGNALS_VIA_CHARACTERS
5578 /* If possible, send signals to the entire pgrp
5579 by sending an input character to it. */
5581 /* TERMIOS is the latest and bestest, and seems most likely to
5582 work. If the system has it, use it. */
5585 cc_t
*sig_char
= NULL
;
5587 tcgetattr (XINT (p
->infd
), &t
);
5592 sig_char
= &t
.c_cc
[VINTR
];
5596 sig_char
= &t
.c_cc
[VQUIT
];
5600 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5601 sig_char
= &t
.c_cc
[VSWTCH
];
5603 sig_char
= &t
.c_cc
[VSUSP
];
5608 if (sig_char
&& *sig_char
!= CDISABLE
)
5610 send_process (proc
, sig_char
, 1, Qnil
);
5613 /* If we can't send the signal with a character,
5614 fall through and send it another way. */
5615 #else /* ! HAVE_TERMIOS */
5617 /* On Berkeley descendants, the following IOCTL's retrieve the
5618 current control characters. */
5619 #if defined (TIOCGLTC) && defined (TIOCGETC)
5627 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5628 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5631 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5632 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5636 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5637 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5639 #endif /* ! defined (SIGTSTP) */
5642 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5644 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5651 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5652 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5655 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5656 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5660 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5661 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5663 #endif /* ! defined (SIGTSTP) */
5665 #else /* ! defined (TCGETA) */
5666 Your configuration files are messed up
.
5667 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5668 you'd better be using one of the alternatives above! */
5669 #endif /* ! defined (TCGETA) */
5670 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5671 /* In this case, the code above should alway returns. */
5673 #endif /* ! defined HAVE_TERMIOS */
5675 /* The code above may fall through if it can't
5676 handle the signal. */
5677 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5680 /* Get the current pgrp using the tty itself, if we have that.
5681 Otherwise, use the pty to get the pgrp.
5682 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5683 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5684 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5685 His patch indicates that if TIOCGPGRP returns an error, then
5686 we should just assume that p->pid is also the process group id. */
5688 gid
= emacs_get_tty_pgrp (p
);
5691 /* If we can't get the information, assume
5692 the shell owns the tty. */
5693 gid
= XFASTINT (p
->pid
);
5695 /* It is not clear whether anything really can set GID to -1.
5696 Perhaps on some system one of those ioctls can or could do so.
5697 Or perhaps this is vestigial. */
5700 #else /* ! defined (TIOCGPGRP ) */
5701 /* Can't select pgrps on this system, so we know that
5702 the child itself heads the pgrp. */
5703 gid
= XFASTINT (p
->pid
);
5704 #endif /* ! defined (TIOCGPGRP ) */
5706 /* If current_group is lambda, and the shell owns the terminal,
5707 don't send any signal. */
5708 if (EQ (current_group
, Qlambda
) && gid
== XFASTINT (p
->pid
))
5716 p
->raw_status_low
= Qnil
;
5717 p
->raw_status_high
= Qnil
;
5719 XSETINT (p
->tick
, ++process_tick
);
5723 #endif /* ! defined (SIGCONT) */
5726 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5731 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
5736 sys$
forcex (&(XFASTINT (p
->pid
)), 0, 1);
5739 flush_pending_output (XINT (p
->infd
));
5743 /* If we don't have process groups, send the signal to the immediate
5744 subprocess. That isn't really right, but it's better than any
5745 obvious alternative. */
5748 kill (XFASTINT (p
->pid
), signo
);
5752 /* gid may be a pid, or minus a pgrp's number */
5754 if (!NILP (current_group
))
5756 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
5757 EMACS_KILLPG (gid
, signo
);
5761 gid
= - XFASTINT (p
->pid
);
5764 #else /* ! defined (TIOCSIGSEND) */
5765 EMACS_KILLPG (gid
, signo
);
5766 #endif /* ! defined (TIOCSIGSEND) */
5769 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5770 doc
: /* Interrupt process PROCESS.
5771 PROCESS may be a process, a buffer, or the name of a process or buffer.
5772 No arg or nil means current buffer's process.
5773 Second arg CURRENT-GROUP non-nil means send signal to
5774 the current process-group of the process's controlling terminal
5775 rather than to the process's own process group.
5776 If the process is a shell, this means interrupt current subjob
5777 rather than the shell.
5779 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5780 don't send the signal. */)
5781 (process
, current_group
)
5782 Lisp_Object process
, current_group
;
5784 process_send_signal (process
, SIGINT
, current_group
, 0);
5788 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5789 doc
: /* Kill process PROCESS. May be process or name of one.
5790 See function `interrupt-process' for more details on usage. */)
5791 (process
, current_group
)
5792 Lisp_Object process
, current_group
;
5794 process_send_signal (process
, SIGKILL
, current_group
, 0);
5798 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5799 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5800 See function `interrupt-process' for more details on usage. */)
5801 (process
, current_group
)
5802 Lisp_Object process
, current_group
;
5804 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5808 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5809 doc
: /* Stop process PROCESS. May be process or name of one.
5810 See function `interrupt-process' for more details on usage.
5811 If PROCESS is a network process, inhibit handling of incoming traffic. */)
5812 (process
, current_group
)
5813 Lisp_Object process
, current_group
;
5816 if (PROCESSP (process
) && NETCONN_P (process
))
5818 struct Lisp_Process
*p
;
5820 p
= XPROCESS (process
);
5821 if (NILP (p
->command
)
5822 && XINT (p
->infd
) >= 0)
5824 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
5825 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
5832 error ("no SIGTSTP support");
5834 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5839 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5840 doc
: /* Continue process PROCESS. May be process or name of one.
5841 See function `interrupt-process' for more details on usage.
5842 If PROCESS is a network process, resume handling of incoming traffic. */)
5843 (process
, current_group
)
5844 Lisp_Object process
, current_group
;
5847 if (PROCESSP (process
) && NETCONN_P (process
))
5849 struct Lisp_Process
*p
;
5851 p
= XPROCESS (process
);
5852 if (EQ (p
->command
, Qt
)
5853 && XINT (p
->infd
) >= 0
5854 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5856 FD_SET (XINT (p
->infd
), &input_wait_mask
);
5857 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
5864 process_send_signal (process
, SIGCONT
, current_group
, 0);
5866 error ("no SIGCONT support");
5871 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5872 2, 2, "sProcess (name or number): \nnSignal code: ",
5873 doc
: /* Send PROCESS the signal with code SIGCODE.
5874 PROCESS may also be an integer specifying the process id of the
5875 process to signal; in this case, the process need not be a child of
5877 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5879 Lisp_Object process
, sigcode
;
5883 if (INTEGERP (process
))
5889 if (STRINGP (process
))
5892 if (tem
= Fget_process (process
), NILP (tem
))
5894 pid
= Fstring_to_number (process
, make_number (10));
5895 if (XINT (pid
) != 0)
5901 process
= get_process (process
);
5906 CHECK_PROCESS (process
);
5907 pid
= XPROCESS (process
)->pid
;
5908 if (!INTEGERP (pid
) || XINT (pid
) <= 0)
5909 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5913 #define handle_signal(NAME, VALUE) \
5914 else if (!strcmp (name, NAME)) \
5915 XSETINT (sigcode, VALUE)
5917 if (INTEGERP (sigcode
))
5921 unsigned char *name
;
5923 CHECK_SYMBOL (sigcode
);
5924 name
= SDATA (SYMBOL_NAME (sigcode
));
5929 handle_signal ("SIGHUP", SIGHUP
);
5932 handle_signal ("SIGINT", SIGINT
);
5935 handle_signal ("SIGQUIT", SIGQUIT
);
5938 handle_signal ("SIGILL", SIGILL
);
5941 handle_signal ("SIGABRT", SIGABRT
);
5944 handle_signal ("SIGEMT", SIGEMT
);
5947 handle_signal ("SIGKILL", SIGKILL
);
5950 handle_signal ("SIGFPE", SIGFPE
);
5953 handle_signal ("SIGBUS", SIGBUS
);
5956 handle_signal ("SIGSEGV", SIGSEGV
);
5959 handle_signal ("SIGSYS", SIGSYS
);
5962 handle_signal ("SIGPIPE", SIGPIPE
);
5965 handle_signal ("SIGALRM", SIGALRM
);
5968 handle_signal ("SIGTERM", SIGTERM
);
5971 handle_signal ("SIGURG", SIGURG
);
5974 handle_signal ("SIGSTOP", SIGSTOP
);
5977 handle_signal ("SIGTSTP", SIGTSTP
);
5980 handle_signal ("SIGCONT", SIGCONT
);
5983 handle_signal ("SIGCHLD", SIGCHLD
);
5986 handle_signal ("SIGTTIN", SIGTTIN
);
5989 handle_signal ("SIGTTOU", SIGTTOU
);
5992 handle_signal ("SIGIO", SIGIO
);
5995 handle_signal ("SIGXCPU", SIGXCPU
);
5998 handle_signal ("SIGXFSZ", SIGXFSZ
);
6001 handle_signal ("SIGVTALRM", SIGVTALRM
);
6004 handle_signal ("SIGPROF", SIGPROF
);
6007 handle_signal ("SIGWINCH", SIGWINCH
);
6010 handle_signal ("SIGINFO", SIGINFO
);
6013 handle_signal ("SIGUSR1", SIGUSR1
);
6016 handle_signal ("SIGUSR2", SIGUSR2
);
6019 error ("Undefined signal name %s", name
);
6022 #undef handle_signal
6024 return make_number (kill (XINT (pid
), XINT (sigcode
)));
6027 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6028 doc
: /* Make PROCESS see end-of-file in its input.
6029 EOF comes after any text already sent to it.
6030 PROCESS may be a process, a buffer, the name of a process or buffer, or
6031 nil, indicating the current buffer's process.
6032 If PROCESS is a network connection, or is a process communicating
6033 through a pipe (as opposed to a pty), then you cannot send any more
6034 text to PROCESS after you call this function. */)
6036 Lisp_Object process
;
6039 struct coding_system
*coding
;
6041 if (DATAGRAM_CONN_P (process
))
6044 proc
= get_process (process
);
6045 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6047 /* Make sure the process is really alive. */
6048 if (! NILP (XPROCESS (proc
)->raw_status_low
))
6049 update_status (XPROCESS (proc
));
6050 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6051 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6053 if (CODING_REQUIRE_FLUSHING (coding
))
6055 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6056 send_process (proc
, "", 0, Qnil
);
6060 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6062 if (!NILP (XPROCESS (proc
)->pty_flag
))
6063 send_process (proc
, "\004", 1, Qnil
);
6066 int old_outfd
, new_outfd
;
6068 #ifdef HAVE_SHUTDOWN
6069 /* If this is a network connection, or socketpair is used
6070 for communication with the subprocess, call shutdown to cause EOF.
6071 (In some old system, shutdown to socketpair doesn't work.
6072 Then we just can't win.) */
6073 if (NILP (XPROCESS (proc
)->pid
)
6074 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6075 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6076 /* In case of socketpair, outfd == infd, so don't close it. */
6077 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6078 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6079 #else /* not HAVE_SHUTDOWN */
6080 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6081 #endif /* not HAVE_SHUTDOWN */
6082 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6083 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6085 if (!proc_encode_coding_system
[new_outfd
])
6086 proc_encode_coding_system
[new_outfd
]
6087 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6088 bcopy (proc_encode_coding_system
[old_outfd
],
6089 proc_encode_coding_system
[new_outfd
],
6090 sizeof (struct coding_system
));
6091 bzero (proc_encode_coding_system
[old_outfd
],
6092 sizeof (struct coding_system
));
6094 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6100 /* Kill all processes associated with `buffer'.
6101 If `buffer' is nil, kill all processes */
6104 kill_buffer_processes (buffer
)
6107 Lisp_Object tail
, proc
;
6109 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6111 proc
= XCDR (XCAR (tail
));
6112 if (GC_PROCESSP (proc
)
6113 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6115 if (NETCONN_P (proc
))
6116 Fdelete_process (proc
);
6117 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6118 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6123 /* On receipt of a signal that a child status has changed, loop asking
6124 about children with changed statuses until the system says there
6127 All we do is change the status; we do not run sentinels or print
6128 notifications. That is saved for the next time keyboard input is
6129 done, in order to avoid timing errors.
6131 ** WARNING: this can be called during garbage collection.
6132 Therefore, it must not be fooled by the presence of mark bits in
6135 ** USG WARNING: Although it is not obvious from the documentation
6136 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6137 signal() before executing at least one wait(), otherwise the
6138 handler will be called again, resulting in an infinite loop. The
6139 relevant portion of the documentation reads "SIGCLD signals will be
6140 queued and the signal-catching function will be continually
6141 reentered until the queue is empty". Invoking signal() causes the
6142 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6145 ** Malloc WARNING: This should never call malloc either directly or
6146 indirectly; if it does, that is a bug */
6149 sigchld_handler (signo
)
6152 int old_errno
= errno
;
6154 register struct Lisp_Process
*p
;
6155 extern EMACS_TIME
*input_available_clear_time
;
6159 sigheld
|= sigbit (SIGCHLD
);
6171 #endif /* no WUNTRACED */
6172 /* Keep trying to get a status until we get a definitive result. */
6176 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6178 while (pid
< 0 && errno
== EINTR
);
6182 /* PID == 0 means no processes found, PID == -1 means a real
6183 failure. We have done all our job, so return. */
6185 /* USG systems forget handlers when they are used;
6186 must reestablish each time */
6187 #if defined (USG) && !defined (POSIX_SIGNALS)
6188 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6191 sigheld
&= ~sigbit (SIGCHLD
);
6199 #endif /* no WNOHANG */
6201 /* Find the process that signaled us, and record its status. */
6204 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6206 proc
= XCDR (XCAR (tail
));
6207 p
= XPROCESS (proc
);
6208 if (GC_EQ (p
->childp
, Qt
) && XINT (p
->pid
) == pid
)
6213 /* Look for an asynchronous process whose pid hasn't been filled
6216 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6218 proc
= XCDR (XCAR (tail
));
6219 p
= XPROCESS (proc
);
6220 if (GC_INTEGERP (p
->pid
) && XINT (p
->pid
) == -1)
6225 /* Change the status of the process that was found. */
6228 union { int i
; WAITTYPE wt
; } u
;
6229 int clear_desc_flag
= 0;
6231 XSETINT (p
->tick
, ++process_tick
);
6233 XSETINT (p
->raw_status_low
, u
.i
& 0xffff);
6234 XSETINT (p
->raw_status_high
, u
.i
>> 16);
6236 /* If process has terminated, stop waiting for its output. */
6237 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6238 && XINT (p
->infd
) >= 0)
6239 clear_desc_flag
= 1;
6241 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6242 if (clear_desc_flag
)
6244 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6245 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6248 /* Tell wait_reading_process_output that it needs to wake up and
6250 if (input_available_clear_time
)
6251 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6254 /* There was no asynchronous process found for that id. Check
6255 if we have a synchronous process. */
6258 synch_process_alive
= 0;
6260 /* Report the status of the synchronous process. */
6262 synch_process_retcode
= WRETCODE (w
);
6263 else if (WIFSIGNALED (w
))
6264 synch_process_termsig
= WTERMSIG (w
);
6266 /* Tell wait_reading_process_output that it needs to wake up and
6268 if (input_available_clear_time
)
6269 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6272 /* On some systems, we must return right away.
6273 If any more processes want to signal us, we will
6275 Otherwise (on systems that have WNOHANG), loop around
6276 to use up all the processes that have something to tell us. */
6277 #if (defined WINDOWSNT \
6278 || (defined USG && !defined GNU_LINUX \
6279 && !(defined HPUX && defined WNOHANG)))
6280 #if defined (USG) && ! defined (POSIX_SIGNALS)
6281 signal (signo
, sigchld_handler
);
6285 #endif /* USG, but not HPUX with WNOHANG */
6291 exec_sentinel_unwind (data
)
6294 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6299 exec_sentinel_error_handler (error
)
6302 cmd_error_internal (error
, "error in process sentinel: ");
6304 update_echo_area ();
6305 Fsleep_for (make_number (2), Qnil
);
6310 exec_sentinel (proc
, reason
)
6311 Lisp_Object proc
, reason
;
6313 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6314 register struct Lisp_Process
*p
= XPROCESS (proc
);
6315 int count
= SPECPDL_INDEX ();
6316 int outer_running_asynch_code
= running_asynch_code
;
6317 int waiting
= waiting_for_user_input_p
;
6319 /* No need to gcpro these, because all we do with them later
6320 is test them for EQness, and none of them should be a string. */
6321 odeactivate
= Vdeactivate_mark
;
6322 XSETBUFFER (obuffer
, current_buffer
);
6323 okeymap
= current_buffer
->keymap
;
6325 sentinel
= p
->sentinel
;
6326 if (NILP (sentinel
))
6329 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6330 assure that it gets restored no matter how the sentinel exits. */
6332 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6333 /* Inhibit quit so that random quits don't screw up a running filter. */
6334 specbind (Qinhibit_quit
, Qt
);
6335 specbind (Qlast_nonmenu_event
, Qt
);
6337 /* In case we get recursively called,
6338 and we already saved the match data nonrecursively,
6339 save the same match data in safely recursive fashion. */
6340 if (outer_running_asynch_code
)
6343 tem
= Fmatch_data (Qnil
, Qnil
);
6344 restore_match_data ();
6345 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
6346 Fset_match_data (tem
);
6349 /* For speed, if a search happens within this code,
6350 save the match data in a special nonrecursive fashion. */
6351 running_asynch_code
= 1;
6353 internal_condition_case_1 (read_process_output_call
,
6355 Fcons (proc
, Fcons (reason
, Qnil
))),
6356 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6357 exec_sentinel_error_handler
);
6359 /* If we saved the match data nonrecursively, restore it now. */
6360 restore_match_data ();
6361 running_asynch_code
= outer_running_asynch_code
;
6363 Vdeactivate_mark
= odeactivate
;
6365 /* Restore waiting_for_user_input_p as it was
6366 when we were called, in case the filter clobbered it. */
6367 waiting_for_user_input_p
= waiting
;
6370 if (! EQ (Fcurrent_buffer (), obuffer
)
6371 || ! EQ (current_buffer
->keymap
, okeymap
))
6373 /* But do it only if the caller is actually going to read events.
6374 Otherwise there's no need to make him wake up, and it could
6375 cause trouble (for example it would make Fsit_for return). */
6376 if (waiting_for_user_input_p
== -1)
6377 record_asynch_buffer_change ();
6379 unbind_to (count
, Qnil
);
6382 /* Report all recent events of a change in process status
6383 (either run the sentinel or output a message).
6384 This is usually done while Emacs is waiting for keyboard input
6385 but can be done at other times. */
6390 register Lisp_Object proc
, buffer
;
6391 Lisp_Object tail
, msg
;
6392 struct gcpro gcpro1
, gcpro2
;
6396 /* We need to gcpro tail; if read_process_output calls a filter
6397 which deletes a process and removes the cons to which tail points
6398 from Vprocess_alist, and then causes a GC, tail is an unprotected
6402 /* Set this now, so that if new processes are created by sentinels
6403 that we run, we get called again to handle their status changes. */
6404 update_tick
= process_tick
;
6406 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6409 register struct Lisp_Process
*p
;
6411 proc
= Fcdr (Fcar (tail
));
6412 p
= XPROCESS (proc
);
6414 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6416 XSETINT (p
->update_tick
, XINT (p
->tick
));
6418 /* If process is still active, read any output that remains. */
6419 while (! EQ (p
->filter
, Qt
)
6420 && ! EQ (p
->status
, Qconnect
)
6421 && ! EQ (p
->status
, Qlisten
)
6422 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6423 && XINT (p
->infd
) >= 0
6424 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6428 /* Get the text to use for the message. */
6429 if (!NILP (p
->raw_status_low
))
6431 msg
= status_message (p
);
6433 /* If process is terminated, deactivate it or delete it. */
6435 if (CONSP (p
->status
))
6436 symbol
= XCAR (p
->status
);
6438 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6439 || EQ (symbol
, Qclosed
))
6441 if (delete_exited_processes
)
6442 remove_process (proc
);
6444 deactivate_process (proc
);
6447 /* The actions above may have further incremented p->tick.
6448 So set p->update_tick again
6449 so that an error in the sentinel will not cause
6450 this code to be run again. */
6451 XSETINT (p
->update_tick
, XINT (p
->tick
));
6452 /* Now output the message suitably. */
6453 if (!NILP (p
->sentinel
))
6454 exec_sentinel (proc
, msg
);
6455 /* Don't bother with a message in the buffer
6456 when a process becomes runnable. */
6457 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6459 Lisp_Object ro
, tem
;
6460 struct buffer
*old
= current_buffer
;
6461 int opoint
, opoint_byte
;
6462 int before
, before_byte
;
6464 ro
= XBUFFER (buffer
)->read_only
;
6466 /* Avoid error if buffer is deleted
6467 (probably that's why the process is dead, too) */
6468 if (NILP (XBUFFER (buffer
)->name
))
6470 Fset_buffer (buffer
);
6473 opoint_byte
= PT_BYTE
;
6474 /* Insert new output into buffer
6475 at the current end-of-output marker,
6476 thus preserving logical ordering of input and output. */
6477 if (XMARKER (p
->mark
)->buffer
)
6478 Fgoto_char (p
->mark
);
6480 SET_PT_BOTH (ZV
, ZV_BYTE
);
6483 before_byte
= PT_BYTE
;
6485 tem
= current_buffer
->read_only
;
6486 current_buffer
->read_only
= Qnil
;
6487 insert_string ("\nProcess ");
6488 Finsert (1, &p
->name
);
6489 insert_string (" ");
6491 current_buffer
->read_only
= tem
;
6492 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6494 if (opoint
>= before
)
6495 SET_PT_BOTH (opoint
+ (PT
- before
),
6496 opoint_byte
+ (PT_BYTE
- before_byte
));
6498 SET_PT_BOTH (opoint
, opoint_byte
);
6500 set_buffer_internal (old
);
6505 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6506 redisplay_preserve_echo_area (13);
6512 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6513 Sset_process_coding_system
, 1, 3, 0,
6514 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6515 DECODING will be used to decode subprocess output and ENCODING to
6516 encode subprocess input. */)
6517 (process
, decoding
, encoding
)
6518 register Lisp_Object process
, decoding
, encoding
;
6520 register struct Lisp_Process
*p
;
6522 CHECK_PROCESS (process
);
6523 p
= XPROCESS (process
);
6524 if (XINT (p
->infd
) < 0)
6525 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6526 if (XINT (p
->outfd
) < 0)
6527 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6528 Fcheck_coding_system (decoding
);
6529 Fcheck_coding_system (encoding
);
6531 p
->decode_coding_system
= decoding
;
6532 p
->encode_coding_system
= encoding
;
6533 setup_process_coding_systems (process
);
6538 DEFUN ("process-coding-system",
6539 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6540 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6542 register Lisp_Object process
;
6544 CHECK_PROCESS (process
);
6545 return Fcons (XPROCESS (process
)->decode_coding_system
,
6546 XPROCESS (process
)->encode_coding_system
);
6549 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6550 Sset_process_filter_multibyte
, 2, 2, 0,
6551 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6552 If FLAG is non-nil, the filter is given multibyte strings.
6553 If FLAG is nil, the filter is given unibyte strings. In this case,
6554 all character code conversion except for end-of-line conversion is
6557 Lisp_Object process
, flag
;
6559 register struct Lisp_Process
*p
;
6561 CHECK_PROCESS (process
);
6562 p
= XPROCESS (process
);
6563 p
->filter_multibyte
= flag
;
6564 setup_process_coding_systems (process
);
6569 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6570 Sprocess_filter_multibyte_p
, 1, 1, 0,
6571 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6573 Lisp_Object process
;
6575 register struct Lisp_Process
*p
;
6577 CHECK_PROCESS (process
);
6578 p
= XPROCESS (process
);
6580 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6585 /* The first time this is called, assume keyboard input comes from DESC
6586 instead of from where we used to expect it.
6587 Subsequent calls mean assume input keyboard can come from DESC
6588 in addition to other places. */
6590 static int add_keyboard_wait_descriptor_called_flag
;
6593 add_keyboard_wait_descriptor (desc
)
6596 if (! add_keyboard_wait_descriptor_called_flag
)
6597 FD_CLR (0, &input_wait_mask
);
6598 add_keyboard_wait_descriptor_called_flag
= 1;
6599 FD_SET (desc
, &input_wait_mask
);
6600 FD_SET (desc
, &non_process_wait_mask
);
6601 if (desc
> max_keyboard_desc
)
6602 max_keyboard_desc
= desc
;
6605 /* From now on, do not expect DESC to give keyboard input. */
6608 delete_keyboard_wait_descriptor (desc
)
6612 int lim
= max_keyboard_desc
;
6614 FD_CLR (desc
, &input_wait_mask
);
6615 FD_CLR (desc
, &non_process_wait_mask
);
6617 if (desc
== max_keyboard_desc
)
6618 for (fd
= 0; fd
< lim
; fd
++)
6619 if (FD_ISSET (fd
, &input_wait_mask
)
6620 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6621 max_keyboard_desc
= fd
;
6624 /* Return nonzero if *MASK has a bit set
6625 that corresponds to one of the keyboard input descriptors. */
6628 keyboard_bit_set (mask
)
6633 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6634 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6635 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6648 if (! noninteractive
|| initialized
)
6650 signal (SIGCHLD
, sigchld_handler
);
6653 FD_ZERO (&input_wait_mask
);
6654 FD_ZERO (&non_keyboard_wait_mask
);
6655 FD_ZERO (&non_process_wait_mask
);
6656 max_process_desc
= 0;
6658 #ifdef NON_BLOCKING_CONNECT
6659 FD_ZERO (&connect_wait_mask
);
6660 num_pending_connects
= 0;
6663 #ifdef ADAPTIVE_READ_BUFFERING
6664 process_output_delay_count
= 0;
6665 process_output_skip
= 0;
6668 FD_SET (0, &input_wait_mask
);
6670 Vprocess_alist
= Qnil
;
6671 for (i
= 0; i
< MAXDESC
; i
++)
6673 chan_process
[i
] = Qnil
;
6674 proc_buffered_char
[i
] = -1;
6676 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
6677 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
6678 #ifdef DATAGRAM_SOCKETS
6679 bzero (datagram_address
, sizeof datagram_address
);
6684 Lisp_Object subfeatures
= Qnil
;
6685 struct socket_options
*sopt
;
6687 #define ADD_SUBFEATURE(key, val) \
6688 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
6690 #ifdef NON_BLOCKING_CONNECT
6691 ADD_SUBFEATURE (QCnowait
, Qt
);
6693 #ifdef DATAGRAM_SOCKETS
6694 ADD_SUBFEATURE (QCtype
, Qdatagram
);
6696 #ifdef HAVE_LOCAL_SOCKETS
6697 ADD_SUBFEATURE (QCfamily
, Qlocal
);
6699 #ifdef HAVE_GETSOCKNAME
6700 ADD_SUBFEATURE (QCservice
, Qt
);
6702 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
6703 ADD_SUBFEATURE (QCserver
, Qt
);
6706 for (sopt
= socket_options
; sopt
->name
; sopt
++)
6707 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
6709 Fprovide (intern ("make-network-process"), subfeatures
);
6711 #endif /* HAVE_SOCKETS */
6717 Qprocessp
= intern ("processp");
6718 staticpro (&Qprocessp
);
6719 Qrun
= intern ("run");
6721 Qstop
= intern ("stop");
6723 Qsignal
= intern ("signal");
6724 staticpro (&Qsignal
);
6726 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
6729 Qexit = intern ("exit");
6730 staticpro (&Qexit); */
6732 Qopen
= intern ("open");
6734 Qclosed
= intern ("closed");
6735 staticpro (&Qclosed
);
6736 Qconnect
= intern ("connect");
6737 staticpro (&Qconnect
);
6738 Qfailed
= intern ("failed");
6739 staticpro (&Qfailed
);
6740 Qlisten
= intern ("listen");
6741 staticpro (&Qlisten
);
6742 Qlocal
= intern ("local");
6743 staticpro (&Qlocal
);
6744 Qdatagram
= intern ("datagram");
6745 staticpro (&Qdatagram
);
6747 QCname
= intern (":name");
6748 staticpro (&QCname
);
6749 QCbuffer
= intern (":buffer");
6750 staticpro (&QCbuffer
);
6751 QChost
= intern (":host");
6752 staticpro (&QChost
);
6753 QCservice
= intern (":service");
6754 staticpro (&QCservice
);
6755 QCtype
= intern (":type");
6756 staticpro (&QCtype
);
6757 QClocal
= intern (":local");
6758 staticpro (&QClocal
);
6759 QCremote
= intern (":remote");
6760 staticpro (&QCremote
);
6761 QCcoding
= intern (":coding");
6762 staticpro (&QCcoding
);
6763 QCserver
= intern (":server");
6764 staticpro (&QCserver
);
6765 QCnowait
= intern (":nowait");
6766 staticpro (&QCnowait
);
6767 QCsentinel
= intern (":sentinel");
6768 staticpro (&QCsentinel
);
6769 QClog
= intern (":log");
6771 QCnoquery
= intern (":noquery");
6772 staticpro (&QCnoquery
);
6773 QCstop
= intern (":stop");
6774 staticpro (&QCstop
);
6775 QCoptions
= intern (":options");
6776 staticpro (&QCoptions
);
6777 QCplist
= intern (":plist");
6778 staticpro (&QCplist
);
6779 QCfilter_multibyte
= intern (":filter-multibyte");
6780 staticpro (&QCfilter_multibyte
);
6782 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
6783 staticpro (&Qlast_nonmenu_event
);
6785 staticpro (&Vprocess_alist
);
6787 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
6788 doc
: /* *Non-nil means delete processes immediately when they exit.
6789 nil means don't delete them until `list-processes' is run. */);
6791 delete_exited_processes
= 1;
6793 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
6794 doc
: /* Control type of device used to communicate with subprocesses.
6795 Values are nil to use a pipe, or t or `pty' to use a pty.
6796 The value has no effect if the system has no ptys or if all ptys are busy:
6797 then a pipe is used in any case.
6798 The value takes effect when `start-process' is called. */);
6799 Vprocess_connection_type
= Qt
;
6801 #ifdef ADAPTIVE_READ_BUFFERING
6802 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
6803 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
6804 On some systems, when Emacs reads the output from a subprocess, the output data
6805 is read in very small blocks, potentially resulting in very poor performance.
6806 This behaviour can be remedied to some extent by setting this variable to a
6807 non-nil value, as it will automatically delay reading from such processes, to
6808 allowing them to produce more output before Emacs tries to read it.
6809 If the value is t, the delay is reset after each write to the process; any other
6810 non-nil value means that the delay is not reset on write.
6811 The variable takes effect when `start-process' is called. */);
6812 Vprocess_adaptive_read_buffering
= Qt
;
6815 defsubr (&Sprocessp
);
6816 defsubr (&Sget_process
);
6817 defsubr (&Sget_buffer_process
);
6818 defsubr (&Sdelete_process
);
6819 defsubr (&Sprocess_status
);
6820 defsubr (&Sprocess_exit_status
);
6821 defsubr (&Sprocess_id
);
6822 defsubr (&Sprocess_name
);
6823 defsubr (&Sprocess_tty_name
);
6824 defsubr (&Sprocess_command
);
6825 defsubr (&Sset_process_buffer
);
6826 defsubr (&Sprocess_buffer
);
6827 defsubr (&Sprocess_mark
);
6828 defsubr (&Sset_process_filter
);
6829 defsubr (&Sprocess_filter
);
6830 defsubr (&Sset_process_sentinel
);
6831 defsubr (&Sprocess_sentinel
);
6832 defsubr (&Sset_process_window_size
);
6833 defsubr (&Sset_process_inherit_coding_system_flag
);
6834 defsubr (&Sprocess_inherit_coding_system_flag
);
6835 defsubr (&Sset_process_query_on_exit_flag
);
6836 defsubr (&Sprocess_query_on_exit_flag
);
6837 defsubr (&Sprocess_contact
);
6838 defsubr (&Sprocess_plist
);
6839 defsubr (&Sset_process_plist
);
6840 defsubr (&Slist_processes
);
6841 defsubr (&Sprocess_list
);
6842 defsubr (&Sstart_process
);
6844 defsubr (&Sset_network_process_option
);
6845 defsubr (&Smake_network_process
);
6846 defsubr (&Sformat_network_address
);
6847 #endif /* HAVE_SOCKETS */
6848 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
6850 defsubr (&Snetwork_interface_list
);
6852 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
6853 defsubr (&Snetwork_interface_info
);
6855 #endif /* HAVE_SOCKETS ... */
6856 #ifdef DATAGRAM_SOCKETS
6857 defsubr (&Sprocess_datagram_address
);
6858 defsubr (&Sset_process_datagram_address
);
6860 defsubr (&Saccept_process_output
);
6861 defsubr (&Sprocess_send_region
);
6862 defsubr (&Sprocess_send_string
);
6863 defsubr (&Sinterrupt_process
);
6864 defsubr (&Skill_process
);
6865 defsubr (&Squit_process
);
6866 defsubr (&Sstop_process
);
6867 defsubr (&Scontinue_process
);
6868 defsubr (&Sprocess_running_child_p
);
6869 defsubr (&Sprocess_send_eof
);
6870 defsubr (&Ssignal_process
);
6871 defsubr (&Swaiting_for_user_input_p
);
6872 /* defsubr (&Sprocess_connection); */
6873 defsubr (&Sset_process_coding_system
);
6874 defsubr (&Sprocess_coding_system
);
6875 defsubr (&Sset_process_filter_multibyte
);
6876 defsubr (&Sprocess_filter_multibyte_p
);
6880 #else /* not subprocesses */
6882 #include <sys/types.h>
6886 #include "systime.h"
6887 #include "character.h"
6889 #include "termopts.h"
6890 #include "sysselect.h"
6892 extern int frame_garbaged
;
6894 extern EMACS_TIME
timer_check ();
6895 extern int timers_run
;
6899 /* As described above, except assuming that there are no subprocesses:
6901 Wait for timeout to elapse and/or keyboard input to be available.
6904 timeout in seconds, or
6905 zero for no limit, or
6906 -1 means gobble data immediately available but don't wait for any.
6908 read_kbd is a Lisp_Object:
6909 0 to ignore keyboard input, or
6910 1 to return when input is available, or
6911 -1 means caller will actually read the input, so don't throw to
6914 see full version for other parameters. We know that wait_proc will
6915 always be NULL, since `subprocesses' isn't defined.
6917 do_display != 0 means redisplay should be done to show subprocess
6918 output that arrives.
6920 Return true iff we received input from any process. */
6923 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
6924 wait_for_cell
, wait_proc
, just_wait_proc
)
6925 int time_limit
, microsecs
, read_kbd
, do_display
;
6926 Lisp_Object wait_for_cell
;
6927 struct Lisp_Process
*wait_proc
;
6931 EMACS_TIME end_time
, timeout
;
6932 SELECT_TYPE waitchannels
;
6935 /* What does time_limit really mean? */
6936 if (time_limit
|| microsecs
)
6938 EMACS_GET_TIME (end_time
);
6939 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6940 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6943 /* Turn off periodic alarms (in case they are in use)
6944 and then turn off any other atimers,
6945 because the select emulator uses alarms. */
6947 turn_on_atimers (0);
6951 int timeout_reduced_for_timers
= 0;
6953 /* If calling from keyboard input, do not quit
6954 since we want to return C-g as an input character.
6955 Otherwise, do pending quit if requested. */
6959 /* Exit now if the cell we're waiting for became non-nil. */
6960 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6963 /* Compute time from now till when time limit is up */
6964 /* Exit if already run out */
6965 if (time_limit
== -1)
6967 /* -1 specified for timeout means
6968 gobble output available now
6969 but don't wait at all. */
6971 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6973 else if (time_limit
|| microsecs
)
6975 EMACS_GET_TIME (timeout
);
6976 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6977 if (EMACS_TIME_NEG_P (timeout
))
6982 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6985 /* If our caller will not immediately handle keyboard events,
6986 run timer events directly.
6987 (Callers that will immediately read keyboard events
6988 call timer_delay on their own.) */
6989 if (NILP (wait_for_cell
))
6991 EMACS_TIME timer_delay
;
6995 int old_timers_run
= timers_run
;
6996 timer_delay
= timer_check (1);
6997 if (timers_run
!= old_timers_run
&& do_display
)
6998 /* We must retry, since a timer may have requeued itself
6999 and that could alter the time delay. */
7000 redisplay_preserve_echo_area (14);
7004 while (!detect_input_pending ());
7006 /* If there is unread keyboard input, also return. */
7008 && requeued_events_pending_p ())
7011 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7013 EMACS_TIME difference
;
7014 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7015 if (EMACS_TIME_NEG_P (difference
))
7017 timeout
= timer_delay
;
7018 timeout_reduced_for_timers
= 1;
7023 /* Cause C-g and alarm signals to take immediate action,
7024 and cause input available signals to zero out timeout. */
7026 set_waiting_for_input (&timeout
);
7028 /* Wait till there is something to do. */
7030 if (! read_kbd
&& NILP (wait_for_cell
))
7031 FD_ZERO (&waitchannels
);
7033 FD_SET (0, &waitchannels
);
7035 /* If a frame has been newly mapped and needs updating,
7036 reprocess its display stuff. */
7037 if (frame_garbaged
&& do_display
)
7039 clear_waiting_for_input ();
7040 redisplay_preserve_echo_area (15);
7042 set_waiting_for_input (&timeout
);
7045 if (read_kbd
&& detect_input_pending ())
7048 FD_ZERO (&waitchannels
);
7051 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7056 /* Make C-g and alarm signals set flags again */
7057 clear_waiting_for_input ();
7059 /* If we woke up due to SIGWINCH, actually change size now. */
7060 do_pending_window_change (0);
7062 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7063 /* We waited the full specified time, so return now. */
7068 /* If the system call was interrupted, then go around the
7070 if (xerrno
== EINTR
)
7071 FD_ZERO (&waitchannels
);
7073 error ("select error: %s", emacs_strerror (xerrno
));
7076 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7077 /* System sometimes fails to deliver SIGIO. */
7078 kill (getpid (), SIGIO
);
7081 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7082 kill (getpid (), SIGIO
);
7085 /* Check for keyboard input */
7088 && detect_input_pending_run_timers (do_display
))
7090 swallow_events (do_display
);
7091 if (detect_input_pending_run_timers (do_display
))
7095 /* If there is unread keyboard input, also return. */
7097 && requeued_events_pending_p ())
7100 /* If wait_for_cell. check for keyboard input
7101 but don't run any timers.
7102 ??? (It seems wrong to me to check for keyboard
7103 input at all when wait_for_cell, but the code
7104 has been this way since July 1994.
7105 Try changing this after version 19.31.) */
7106 if (! NILP (wait_for_cell
)
7107 && detect_input_pending ())
7109 swallow_events (do_display
);
7110 if (detect_input_pending ())
7114 /* Exit now if the cell we're waiting for became non-nil. */
7115 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7125 /* Don't confuse make-docfile by having two doc strings for this function.
7126 make-docfile does not pay attention to #if, for good reason! */
7127 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7130 register Lisp_Object name
;
7135 /* Don't confuse make-docfile by having two doc strings for this function.
7136 make-docfile does not pay attention to #if, for good reason! */
7137 DEFUN ("process-inherit-coding-system-flag",
7138 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7142 register Lisp_Object process
;
7144 /* Ignore the argument and return the value of
7145 inherit-process-coding-system. */
7146 return inherit_process_coding_system
? Qt
: Qnil
;
7149 /* Kill all processes associated with `buffer'.
7150 If `buffer' is nil, kill all processes.
7151 Since we have no subprocesses, this does nothing. */
7154 kill_buffer_processes (buffer
)
7167 QCtype
= intern (":type");
7168 staticpro (&QCtype
);
7170 defsubr (&Sget_buffer_process
);
7171 defsubr (&Sprocess_inherit_coding_system_flag
);
7175 #endif /* not subprocesses */
7177 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7178 (do not change this comment) */