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>
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
);
657 if (inch
< 0 || outch
< 0)
660 if (!proc_decode_coding_system
[inch
])
661 proc_decode_coding_system
[inch
]
662 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
663 setup_coding_system (p
->decode_coding_system
,
664 proc_decode_coding_system
[inch
]);
665 if (! NILP (p
->filter
))
667 if (NILP (p
->filter_multibyte
))
668 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
670 else if (BUFFERP (p
->buffer
))
672 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
673 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
676 if (!proc_encode_coding_system
[outch
])
677 proc_encode_coding_system
[outch
]
678 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
679 setup_coding_system (p
->encode_coding_system
,
680 proc_encode_coding_system
[outch
]);
683 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
684 doc
: /* Return t if OBJECT is a process. */)
688 return PROCESSP (object
) ? Qt
: Qnil
;
691 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
692 doc
: /* Return the process named NAME, or nil if there is none. */)
694 register Lisp_Object name
;
699 return Fcdr (Fassoc (name
, Vprocess_alist
));
702 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
703 doc
: /* Return the (or a) process associated with BUFFER.
704 BUFFER may be a buffer or the name of one. */)
706 register Lisp_Object buffer
;
708 register Lisp_Object buf
, tail
, proc
;
710 if (NILP (buffer
)) return Qnil
;
711 buf
= Fget_buffer (buffer
);
712 if (NILP (buf
)) return Qnil
;
714 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
716 proc
= Fcdr (Fcar (tail
));
717 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
723 /* This is how commands for the user decode process arguments. It
724 accepts a process, a process name, a buffer, a buffer name, or nil.
725 Buffers denote the first process in the buffer, and nil denotes the
730 register Lisp_Object name
;
732 register Lisp_Object proc
, obj
;
735 obj
= Fget_process (name
);
737 obj
= Fget_buffer (name
);
739 error ("Process %s does not exist", SDATA (name
));
741 else if (NILP (name
))
742 obj
= Fcurrent_buffer ();
746 /* Now obj should be either a buffer object or a process object.
750 proc
= Fget_buffer_process (obj
);
752 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
762 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
763 doc
: /* Delete PROCESS: kill it and forget about it immediately.
764 PROCESS may be a process, a buffer, the name of a process or buffer, or
765 nil, indicating the current buffer's process. */)
767 register Lisp_Object process
;
769 process
= get_process (process
);
770 XPROCESS (process
)->raw_status_low
= Qnil
;
771 XPROCESS (process
)->raw_status_high
= Qnil
;
772 if (NETCONN_P (process
))
774 XPROCESS (process
)->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
775 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
778 else if (XINT (XPROCESS (process
)->infd
) >= 0)
780 Fkill_process (process
, Qnil
);
781 /* Do this now, since remove_process will make sigchld_handler do nothing. */
782 XPROCESS (process
)->status
783 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
784 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
787 remove_process (process
);
791 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
792 doc
: /* Return the status of PROCESS.
793 The returned value is one of the following symbols:
794 run -- for a process that is running.
795 stop -- for a process stopped but continuable.
796 exit -- for a process that has exited.
797 signal -- for a process that has got a fatal signal.
798 open -- for a network stream connection that is open.
799 listen -- for a network stream server that is listening.
800 closed -- for a network stream connection that is closed.
801 connect -- when waiting for a non-blocking connection to complete.
802 failed -- when a non-blocking connection has failed.
803 nil -- if arg is a process name and no such process exists.
804 PROCESS may be a process, a buffer, the name of a process, or
805 nil, indicating the current buffer's process. */)
807 register Lisp_Object process
;
809 register struct Lisp_Process
*p
;
810 register Lisp_Object status
;
812 if (STRINGP (process
))
813 process
= Fget_process (process
);
815 process
= get_process (process
);
820 p
= XPROCESS (process
);
821 if (!NILP (p
->raw_status_low
))
825 status
= XCAR (status
);
828 if (EQ (status
, Qexit
))
830 else if (EQ (p
->command
, Qt
))
832 else if (EQ (status
, Qrun
))
838 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
840 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
841 If PROCESS has not yet exited or died, return 0. */)
843 register Lisp_Object process
;
845 CHECK_PROCESS (process
);
846 if (!NILP (XPROCESS (process
)->raw_status_low
))
847 update_status (XPROCESS (process
));
848 if (CONSP (XPROCESS (process
)->status
))
849 return XCAR (XCDR (XPROCESS (process
)->status
));
850 return make_number (0);
853 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
854 doc
: /* Return the process id of PROCESS.
855 This is the pid of the external process which PROCESS uses or talks to.
856 For a network connection, this value is nil. */)
858 register Lisp_Object process
;
860 CHECK_PROCESS (process
);
861 return XPROCESS (process
)->pid
;
864 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
865 doc
: /* Return the name of PROCESS, as a string.
866 This is the name of the program invoked in PROCESS,
867 possibly modified to make it unique among process names. */)
869 register Lisp_Object process
;
871 CHECK_PROCESS (process
);
872 return XPROCESS (process
)->name
;
875 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
876 doc
: /* Return the command that was executed to start PROCESS.
877 This is a list of strings, the first string being the program executed
878 and the rest of the strings being the arguments given to it.
879 For a non-child channel, this is nil. */)
881 register Lisp_Object process
;
883 CHECK_PROCESS (process
);
884 return XPROCESS (process
)->command
;
887 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
888 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
889 This is the terminal that the process itself reads and writes on,
890 not the name of the pty that Emacs uses to talk with that terminal. */)
892 register Lisp_Object process
;
894 CHECK_PROCESS (process
);
895 return XPROCESS (process
)->tty_name
;
898 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
900 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
902 register Lisp_Object process
, buffer
;
904 struct Lisp_Process
*p
;
906 CHECK_PROCESS (process
);
908 CHECK_BUFFER (buffer
);
909 p
= XPROCESS (process
);
912 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
913 setup_process_coding_systems (process
);
917 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
919 doc
: /* Return the buffer PROCESS is associated with.
920 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
922 register Lisp_Object process
;
924 CHECK_PROCESS (process
);
925 return XPROCESS (process
)->buffer
;
928 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
930 doc
: /* Return the marker for the end of the last output from PROCESS. */)
932 register Lisp_Object process
;
934 CHECK_PROCESS (process
);
935 return XPROCESS (process
)->mark
;
938 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
940 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
941 t means stop accepting output from the process.
943 When a process has a filter, its buffer is not used for output.
944 Instead, each time it does output, the entire string of output is
945 passed to the filter.
947 The filter gets two arguments: the process and the string of output.
948 The string argument is normally a multibyte string, except:
949 - if the process' input coding system is no-conversion or raw-text,
950 it is a unibyte string (the non-converted input), or else
951 - if `default-enable-multibyte-characters' is nil, it is a unibyte
952 string (the result of converting the decoded input multibyte
953 string to unibyte with `string-make-unibyte'). */)
955 register Lisp_Object process
, filter
;
957 struct Lisp_Process
*p
;
959 CHECK_PROCESS (process
);
960 p
= XPROCESS (process
);
962 /* Don't signal an error if the process' input file descriptor
963 is closed. This could make debugging Lisp more difficult,
964 for example when doing something like
966 (setq process (start-process ...))
968 (set-process-filter process ...) */
970 if (XINT (p
->infd
) >= 0)
972 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
974 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
975 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
977 else if (EQ (p
->filter
, Qt
)
978 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
980 FD_SET (XINT (p
->infd
), &input_wait_mask
);
981 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
987 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
988 setup_process_coding_systems (process
);
992 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
994 doc
: /* Returns the filter function of PROCESS; nil if none.
995 See `set-process-filter' for more info on filter functions. */)
997 register Lisp_Object process
;
999 CHECK_PROCESS (process
);
1000 return XPROCESS (process
)->filter
;
1003 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1005 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1006 The sentinel is called as a function when the process changes state.
1007 It gets two arguments: the process, and a string describing the change. */)
1009 register Lisp_Object process
, sentinel
;
1011 struct Lisp_Process
*p
;
1013 CHECK_PROCESS (process
);
1014 p
= XPROCESS (process
);
1016 p
->sentinel
= sentinel
;
1018 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1022 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1024 doc
: /* Return the sentinel of PROCESS; nil if none.
1025 See `set-process-sentinel' for more info on sentinels. */)
1027 register Lisp_Object process
;
1029 CHECK_PROCESS (process
);
1030 return XPROCESS (process
)->sentinel
;
1033 DEFUN ("set-process-window-size", Fset_process_window_size
,
1034 Sset_process_window_size
, 3, 3, 0,
1035 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1036 (process
, height
, width
)
1037 register Lisp_Object process
, height
, width
;
1039 CHECK_PROCESS (process
);
1040 CHECK_NATNUM (height
);
1041 CHECK_NATNUM (width
);
1043 if (XINT (XPROCESS (process
)->infd
) < 0
1044 || set_window_size (XINT (XPROCESS (process
)->infd
),
1045 XINT (height
), XINT (width
)) <= 0)
1051 DEFUN ("set-process-inherit-coding-system-flag",
1052 Fset_process_inherit_coding_system_flag
,
1053 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1054 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1055 If the second argument FLAG is non-nil, then the variable
1056 `buffer-file-coding-system' of the buffer associated with PROCESS
1057 will be bound to the value of the coding system used to decode
1060 This is useful when the coding system specified for the process buffer
1061 leaves either the character code conversion or the end-of-line conversion
1062 unspecified, or if the coding system used to decode the process output
1063 is more appropriate for saving the process buffer.
1065 Binding the variable `inherit-process-coding-system' to non-nil before
1066 starting the process is an alternative way of setting the inherit flag
1067 for the process which will run. */)
1069 register Lisp_Object process
, flag
;
1071 CHECK_PROCESS (process
);
1072 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1076 DEFUN ("process-inherit-coding-system-flag",
1077 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1079 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1080 If this flag is t, `buffer-file-coding-system' of the buffer
1081 associated with PROCESS will inherit the coding system used to decode
1082 the process output. */)
1084 register Lisp_Object process
;
1086 CHECK_PROCESS (process
);
1087 return XPROCESS (process
)->inherit_coding_system_flag
;
1090 DEFUN ("set-process-query-on-exit-flag",
1091 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1093 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1094 If the second argument FLAG is non-nil, Emacs will query the user before
1095 exiting if PROCESS is running. */)
1097 register Lisp_Object process
, flag
;
1099 CHECK_PROCESS (process
);
1100 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1104 DEFUN ("process-query-on-exit-flag",
1105 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1107 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1109 register Lisp_Object process
;
1111 CHECK_PROCESS (process
);
1112 return Fnull (XPROCESS (process
)->kill_without_query
);
1115 #ifdef DATAGRAM_SOCKETS
1116 Lisp_Object
Fprocess_datagram_address ();
1119 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1121 doc
: /* Return the contact info of PROCESS; t for a real child.
1122 For a net connection, the value depends on the optional KEY arg.
1123 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1124 if KEY is t, the complete contact information for the connection is
1125 returned, else the specific value for the keyword KEY is returned.
1126 See `make-network-process' for a list of keywords. */)
1128 register Lisp_Object process
, key
;
1130 Lisp_Object contact
;
1132 CHECK_PROCESS (process
);
1133 contact
= XPROCESS (process
)->childp
;
1135 #ifdef DATAGRAM_SOCKETS
1136 if (DATAGRAM_CONN_P (process
)
1137 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1138 contact
= Fplist_put (contact
, QCremote
,
1139 Fprocess_datagram_address (process
));
1142 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1145 return Fcons (Fplist_get (contact
, QChost
),
1146 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1147 return Fplist_get (contact
, key
);
1150 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1152 doc
: /* Return the plist of PROCESS. */)
1154 register Lisp_Object process
;
1156 CHECK_PROCESS (process
);
1157 return XPROCESS (process
)->plist
;
1160 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1162 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1164 register Lisp_Object process
, plist
;
1166 CHECK_PROCESS (process
);
1169 XPROCESS (process
)->plist
= plist
;
1173 #if 0 /* Turned off because we don't currently record this info
1174 in the process. Perhaps add it. */
1175 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1176 doc
: /* Return the connection type of PROCESS.
1177 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1178 a socket connection. */)
1180 Lisp_Object process
;
1182 return XPROCESS (process
)->type
;
1187 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1189 doc
: /* Convert network ADDRESS from internal format to a string.
1190 If optional second argument OMIT-PORT is non-nil, don't include a port
1191 number in the string; in this case, interpret a 4 element vector as an
1192 IP address. Returns nil if format of ADDRESS is invalid. */)
1193 (address
, omit_port
)
1194 Lisp_Object address
, omit_port
;
1199 if (STRINGP (address
)) /* AF_LOCAL */
1202 if (VECTORP (address
)) /* AF_INET */
1204 register struct Lisp_Vector
*p
= XVECTOR (address
);
1205 Lisp_Object args
[6];
1208 if (!NILP (omit_port
) && (p
->size
== 4 || p
->size
== 5))
1210 args
[0] = build_string ("%d.%d.%d.%d");
1213 else if (p
->size
== 5)
1215 args
[0] = build_string ("%d.%d.%d.%d:%d");
1221 for (i
= 0; i
< nargs
; i
++)
1222 args
[i
+1] = p
->contents
[i
];
1223 return Fformat (nargs
+1, args
);
1226 if (CONSP (address
))
1228 Lisp_Object args
[2];
1229 args
[0] = build_string ("<Family %d>");
1230 args
[1] = Fcar (address
);
1231 return Fformat (2, args
);
1240 list_processes_1 (query_only
)
1241 Lisp_Object query_only
;
1243 register Lisp_Object tail
, tem
;
1244 Lisp_Object proc
, minspace
, tem1
;
1245 register struct Lisp_Process
*p
;
1247 int w_proc
, w_buffer
, w_tty
;
1248 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1250 w_proc
= 4; /* Proc */
1251 w_buffer
= 6; /* Buffer */
1252 w_tty
= 0; /* Omit if no ttys */
1254 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1258 proc
= Fcdr (Fcar (tail
));
1259 p
= XPROCESS (proc
);
1260 if (NILP (p
->childp
))
1262 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1264 if (STRINGP (p
->name
)
1265 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1267 if (!NILP (p
->buffer
))
1269 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1270 w_buffer
= 8; /* (Killed) */
1271 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1274 if (STRINGP (p
->tty_name
)
1275 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1279 XSETFASTINT (i_status
, w_proc
+ 1);
1280 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1283 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1284 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1287 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1290 XSETFASTINT (minspace
, 1);
1292 set_buffer_internal (XBUFFER (Vstandard_output
));
1293 Fbuffer_disable_undo (Vstandard_output
);
1295 current_buffer
->truncate_lines
= Qt
;
1297 write_string ("Proc", -1);
1298 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1299 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1302 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1304 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1305 write_string ("\n", -1);
1307 write_string ("----", -1);
1308 Findent_to (i_status
, minspace
); write_string ("------", -1);
1309 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1312 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1314 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1315 write_string ("\n", -1);
1317 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1321 proc
= Fcdr (Fcar (tail
));
1322 p
= XPROCESS (proc
);
1323 if (NILP (p
->childp
))
1325 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1328 Finsert (1, &p
->name
);
1329 Findent_to (i_status
, minspace
);
1331 if (!NILP (p
->raw_status_low
))
1334 if (CONSP (p
->status
))
1335 symbol
= XCAR (p
->status
);
1338 if (EQ (symbol
, Qsignal
))
1341 tem
= Fcar (Fcdr (p
->status
));
1343 if (XINT (tem
) < NSIG
)
1344 write_string (sys_errlist
[XINT (tem
)], -1);
1347 Fprinc (symbol
, Qnil
);
1349 else if (NETCONN1_P (p
))
1351 if (EQ (symbol
, Qexit
))
1352 write_string ("closed", -1);
1353 else if (EQ (p
->command
, Qt
))
1354 write_string ("stopped", -1);
1355 else if (EQ (symbol
, Qrun
))
1356 write_string ("open", -1);
1358 Fprinc (symbol
, Qnil
);
1361 Fprinc (symbol
, Qnil
);
1363 if (EQ (symbol
, Qexit
))
1366 tem
= Fcar (Fcdr (p
->status
));
1369 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1370 write_string (tembuf
, -1);
1374 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
1375 remove_process (proc
);
1377 Findent_to (i_buffer
, minspace
);
1378 if (NILP (p
->buffer
))
1379 insert_string ("(none)");
1380 else if (NILP (XBUFFER (p
->buffer
)->name
))
1381 insert_string ("(Killed)");
1383 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1387 Findent_to (i_tty
, minspace
);
1388 if (STRINGP (p
->tty_name
))
1389 Finsert (1, &p
->tty_name
);
1392 Findent_to (i_command
, minspace
);
1394 if (EQ (p
->status
, Qlisten
))
1396 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1397 if (INTEGERP (port
))
1398 port
= Fnumber_to_string (port
);
1400 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1401 sprintf (tembuf
, "(network %s server on %s)\n",
1402 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1403 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1404 insert_string (tembuf
);
1406 else if (NETCONN1_P (p
))
1408 /* For a local socket, there is no host name,
1409 so display service instead. */
1410 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1411 if (!STRINGP (host
))
1413 host
= Fplist_get (p
->childp
, QCservice
);
1414 if (INTEGERP (host
))
1415 host
= Fnumber_to_string (host
);
1418 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1419 sprintf (tembuf
, "(network %s connection to %s)\n",
1420 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1421 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1422 insert_string (tembuf
);
1434 insert_string (" ");
1436 insert_string ("\n");
1442 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1443 doc
: /* Display a list of all processes.
1444 If optional argument QUERY-ONLY is non-nil, only processes with
1445 the query-on-exit flag set will be listed.
1446 Any process listed as exited or signaled is actually eliminated
1447 after the listing is made. */)
1449 Lisp_Object query_only
;
1451 internal_with_output_to_temp_buffer ("*Process List*",
1452 list_processes_1
, query_only
);
1456 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1457 doc
: /* Return a list of all processes. */)
1460 return Fmapcar (Qcdr
, Vprocess_alist
);
1463 /* Starting asynchronous inferior processes. */
1465 static Lisp_Object
start_process_unwind ();
1467 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1468 doc
: /* Start a program in a subprocess. Return the process object for it.
1469 NAME is name for process. It is modified if necessary to make it unique.
1470 BUFFER is the buffer (or buffer name) to associate with the process.
1471 Process output goes at end of that buffer, unless you specify
1472 an output stream or filter function to handle the output.
1473 BUFFER may be also nil, meaning that this process is not associated
1475 PROGRAM is the program file name. It is searched for in PATH.
1476 Remaining arguments are strings to give program as arguments.
1478 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1481 register Lisp_Object
*args
;
1483 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1485 register unsigned char *new_argv
;
1488 register unsigned char **new_argv
;
1491 int count
= SPECPDL_INDEX ();
1495 buffer
= Fget_buffer_create (buffer
);
1497 /* Make sure that the child will be able to chdir to the current
1498 buffer's current directory, or its unhandled equivalent. We
1499 can't just have the child check for an error when it does the
1500 chdir, since it's in a vfork.
1502 We have to GCPRO around this because Fexpand_file_name and
1503 Funhandled_file_name_directory might call a file name handling
1504 function. The argument list is protected by the caller, so all
1505 we really have to worry about is buffer. */
1507 struct gcpro gcpro1
, gcpro2
;
1509 current_dir
= current_buffer
->directory
;
1511 GCPRO2 (buffer
, current_dir
);
1514 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1516 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1517 report_file_error ("Setting current directory",
1518 Fcons (current_buffer
->directory
, Qnil
));
1524 CHECK_STRING (name
);
1528 CHECK_STRING (program
);
1530 proc
= make_process (name
);
1531 /* If an error occurs and we can't start the process, we want to
1532 remove it from the process list. This means that each error
1533 check in create_process doesn't need to call remove_process
1534 itself; it's all taken care of here. */
1535 record_unwind_protect (start_process_unwind
, proc
);
1537 XPROCESS (proc
)->childp
= Qt
;
1538 XPROCESS (proc
)->plist
= Qnil
;
1539 XPROCESS (proc
)->command_channel_p
= Qnil
;
1540 XPROCESS (proc
)->buffer
= buffer
;
1541 XPROCESS (proc
)->sentinel
= Qnil
;
1542 XPROCESS (proc
)->filter
= Qnil
;
1543 XPROCESS (proc
)->filter_multibyte
1544 = buffer_defaults
.enable_multibyte_characters
;
1545 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1547 #ifdef ADAPTIVE_READ_BUFFERING
1548 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1551 /* Make the process marker point into the process buffer (if any). */
1553 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1554 BUF_ZV (XBUFFER (buffer
)),
1555 BUF_ZV_BYTE (XBUFFER (buffer
)));
1558 /* Decide coding systems for communicating with the process. Here
1559 we don't setup the structure coding_system nor pay attention to
1560 unibyte mode. They are done in create_process. */
1562 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1563 Lisp_Object coding_systems
= Qt
;
1564 Lisp_Object val
, *args2
;
1565 struct gcpro gcpro1
, gcpro2
;
1567 val
= Vcoding_system_for_read
;
1570 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1571 args2
[0] = Qstart_process
;
1572 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1573 GCPRO2 (proc
, current_dir
);
1574 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1576 if (CONSP (coding_systems
))
1577 val
= XCAR (coding_systems
);
1578 else if (CONSP (Vdefault_process_coding_system
))
1579 val
= XCAR (Vdefault_process_coding_system
);
1581 XPROCESS (proc
)->decode_coding_system
= val
;
1583 val
= Vcoding_system_for_write
;
1586 if (EQ (coding_systems
, Qt
))
1588 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1589 args2
[0] = Qstart_process
;
1590 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1591 GCPRO2 (proc
, current_dir
);
1592 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1595 if (CONSP (coding_systems
))
1596 val
= XCDR (coding_systems
);
1597 else if (CONSP (Vdefault_process_coding_system
))
1598 val
= XCDR (Vdefault_process_coding_system
);
1600 XPROCESS (proc
)->encode_coding_system
= val
;
1604 /* Make a one member argv with all args concatenated
1605 together separated by a blank. */
1606 len
= SBYTES (program
) + 2;
1607 for (i
= 3; i
< nargs
; i
++)
1611 len
+= SBYTES (tem
) + 1; /* count the blank */
1613 new_argv
= (unsigned char *) alloca (len
);
1614 strcpy (new_argv
, SDATA (program
));
1615 for (i
= 3; i
< nargs
; i
++)
1619 strcat (new_argv
, " ");
1620 strcat (new_argv
, SDATA (tem
));
1622 /* Need to add code here to check for program existence on VMS */
1625 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1627 /* If program file name is not absolute, search our path for it.
1628 Put the name we will really use in TEM. */
1629 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1630 && !(SCHARS (program
) > 1
1631 && IS_DEVICE_SEP (SREF (program
, 1))))
1633 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1636 GCPRO4 (name
, program
, buffer
, current_dir
);
1637 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1640 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1641 tem
= Fexpand_file_name (tem
, Qnil
);
1645 if (!NILP (Ffile_directory_p (program
)))
1646 error ("Specified program for new process is a directory");
1650 /* If program file name starts with /: for quoting a magic name,
1652 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1653 && SREF (tem
, 1) == ':')
1654 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1656 /* Encode the file name and put it in NEW_ARGV.
1657 That's where the child will use it to execute the program. */
1658 tem
= ENCODE_FILE (tem
);
1659 new_argv
[0] = SDATA (tem
);
1661 /* Here we encode arguments by the coding system used for sending
1662 data to the process. We don't support using different coding
1663 systems for encoding arguments and for encoding data sent to the
1666 for (i
= 3; i
< nargs
; i
++)
1670 if (STRING_MULTIBYTE (tem
))
1671 tem
= (code_convert_string_norecord
1672 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1673 new_argv
[i
- 2] = SDATA (tem
);
1675 new_argv
[i
- 2] = 0;
1676 #endif /* not VMS */
1678 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1679 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1680 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1681 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1683 XPROCESS (proc
)->inherit_coding_system_flag
1684 = (NILP (buffer
) || !inherit_process_coding_system
1687 create_process (proc
, (char **) new_argv
, current_dir
);
1689 return unbind_to (count
, proc
);
1692 /* This function is the unwind_protect form for Fstart_process. If
1693 PROC doesn't have its pid set, then we know someone has signaled
1694 an error and the process wasn't started successfully, so we should
1695 remove it from the process list. */
1697 start_process_unwind (proc
)
1700 if (!PROCESSP (proc
))
1703 /* Was PROC started successfully? */
1704 if (XINT (XPROCESS (proc
)->pid
) <= 0)
1705 remove_process (proc
);
1711 create_process_1 (timer
)
1712 struct atimer
*timer
;
1714 /* Nothing to do. */
1718 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1721 /* Mimic blocking of signals on system V, which doesn't really have it. */
1723 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1724 int sigchld_deferred
;
1727 create_process_sigchld ()
1729 signal (SIGCHLD
, create_process_sigchld
);
1731 sigchld_deferred
= 1;
1737 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1739 create_process (process
, new_argv
, current_dir
)
1740 Lisp_Object process
;
1742 Lisp_Object current_dir
;
1744 int pid
, inchannel
, outchannel
;
1746 #ifdef POSIX_SIGNALS
1749 struct sigaction sigint_action
;
1750 struct sigaction sigquit_action
;
1752 struct sigaction sighup_action
;
1754 #else /* !POSIX_SIGNALS */
1757 SIGTYPE (*sigchld
)();
1760 #endif /* !POSIX_SIGNALS */
1761 /* Use volatile to protect variables from being clobbered by longjmp. */
1762 volatile int forkin
, forkout
;
1763 volatile int pty_flag
= 0;
1765 extern char **environ
;
1768 inchannel
= outchannel
= -1;
1771 if (!NILP (Vprocess_connection_type
))
1772 outchannel
= inchannel
= allocate_pty ();
1776 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1777 /* On most USG systems it does not work to open the pty's tty here,
1778 then close it and reopen it in the child. */
1780 /* Don't let this terminal become our controlling terminal
1781 (in case we don't have one). */
1782 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1784 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1787 report_file_error ("Opening pty", Qnil
);
1789 forkin
= forkout
= -1;
1790 #endif /* not USG, or USG_SUBTTY_WORKS */
1794 #endif /* HAVE_PTYS */
1797 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1798 report_file_error ("Opening socketpair", Qnil
);
1799 outchannel
= inchannel
= sv
[0];
1800 forkout
= forkin
= sv
[1];
1802 #else /* not SKTPAIR */
1807 report_file_error ("Creating pipe", Qnil
);
1813 emacs_close (inchannel
);
1814 emacs_close (forkout
);
1815 report_file_error ("Creating pipe", Qnil
);
1820 #endif /* not SKTPAIR */
1823 /* Replaced by close_process_descs */
1824 set_exclusive_use (inchannel
);
1825 set_exclusive_use (outchannel
);
1828 /* Stride people say it's a mystery why this is needed
1829 as well as the O_NDELAY, but that it fails without this. */
1830 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1833 ioctl (inchannel
, FIONBIO
, &one
);
1838 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1839 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1842 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1843 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1847 /* Record this as an active process, with its channels.
1848 As a result, child_setup will close Emacs's side of the pipes. */
1849 chan_process
[inchannel
] = process
;
1850 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1851 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1853 /* Previously we recorded the tty descriptor used in the subprocess.
1854 It was only used for getting the foreground tty process, so now
1855 we just reopen the device (see emacs_get_tty_pgrp) as this is
1856 more portable (see USG_SUBTTY_WORKS above). */
1858 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1859 XPROCESS (process
)->status
= Qrun
;
1860 setup_process_coding_systems (process
);
1862 /* Delay interrupts until we have a chance to store
1863 the new fork's pid in its process structure */
1864 #ifdef POSIX_SIGNALS
1865 sigemptyset (&blocked
);
1867 sigaddset (&blocked
, SIGCHLD
);
1869 #ifdef HAVE_WORKING_VFORK
1870 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1871 this sets the parent's signal handlers as well as the child's.
1872 So delay all interrupts whose handlers the child might munge,
1873 and record the current handlers so they can be restored later. */
1874 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1875 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1877 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1879 #endif /* HAVE_WORKING_VFORK */
1880 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1881 #else /* !POSIX_SIGNALS */
1885 #else /* not BSD4_1 */
1886 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1887 sigsetmask (sigmask (SIGCHLD
));
1888 #else /* ordinary USG */
1890 sigchld_deferred
= 0;
1891 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1893 #endif /* ordinary USG */
1894 #endif /* not BSD4_1 */
1895 #endif /* SIGCHLD */
1896 #endif /* !POSIX_SIGNALS */
1898 FD_SET (inchannel
, &input_wait_mask
);
1899 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1900 if (inchannel
> max_process_desc
)
1901 max_process_desc
= inchannel
;
1903 /* Until we store the proper pid, enable sigchld_handler
1904 to recognize an unknown pid as standing for this process.
1905 It is very important not to let this `marker' value stay
1906 in the table after this function has returned; if it does
1907 it might cause call-process to hang and subsequent asynchronous
1908 processes to get their return values scrambled. */
1909 XSETINT (XPROCESS (process
)->pid
, -1);
1914 /* child_setup must clobber environ on systems with true vfork.
1915 Protect it from permanent change. */
1916 char **save_environ
= environ
;
1918 current_dir
= ENCODE_FILE (current_dir
);
1923 #endif /* not WINDOWSNT */
1925 int xforkin
= forkin
;
1926 int xforkout
= forkout
;
1928 #if 0 /* This was probably a mistake--it duplicates code later on,
1929 but fails to handle all the cases. */
1930 /* Make sure SIGCHLD is not blocked in the child. */
1931 sigsetmask (SIGEMPTYMASK
);
1934 /* Make the pty be the controlling terminal of the process. */
1936 /* First, disconnect its current controlling terminal. */
1938 /* We tried doing setsid only if pty_flag, but it caused
1939 process_set_signal to fail on SGI when using a pipe. */
1941 /* Make the pty's terminal the controlling terminal. */
1945 /* We ignore the return value
1946 because faith@cs.unc.edu says that is necessary on Linux. */
1947 ioctl (xforkin
, TIOCSCTTY
, 0);
1950 #else /* not HAVE_SETSID */
1952 /* It's very important to call setpgrp here and no time
1953 afterwards. Otherwise, we lose our controlling tty which
1954 is set when we open the pty. */
1957 #endif /* not HAVE_SETSID */
1958 #if defined (HAVE_TERMIOS) && defined (LDISC1)
1959 if (pty_flag
&& xforkin
>= 0)
1962 tcgetattr (xforkin
, &t
);
1964 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1965 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1968 #if defined (NTTYDISC) && defined (TIOCSETD)
1969 if (pty_flag
&& xforkin
>= 0)
1971 /* Use new line discipline. */
1972 int ldisc
= NTTYDISC
;
1973 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1978 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1979 can do TIOCSPGRP only to the process's controlling tty. */
1982 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1983 I can't test it since I don't have 4.3. */
1984 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1985 ioctl (j
, TIOCNOTTY
, 0);
1988 /* In order to get a controlling terminal on some versions
1989 of BSD, it is necessary to put the process in pgrp 0
1990 before it opens the terminal. */
1998 #endif /* TIOCNOTTY */
2000 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2001 /*** There is a suggestion that this ought to be a
2002 conditional on TIOCSPGRP,
2003 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2004 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2005 that system does seem to need this code, even though
2006 both HAVE_SETSID and TIOCSCTTY are defined. */
2007 /* Now close the pty (if we had it open) and reopen it.
2008 This makes the pty the controlling terminal of the subprocess. */
2011 #ifdef SET_CHILD_PTY_PGRP
2012 int pgrp
= getpid ();
2015 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2018 emacs_close (xforkin
);
2019 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2023 emacs_write (1, "Couldn't open the pty terminal ", 31);
2024 emacs_write (1, pty_name
, strlen (pty_name
));
2025 emacs_write (1, "\n", 1);
2029 #ifdef SET_CHILD_PTY_PGRP
2030 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2031 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2034 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2036 #ifdef SETUP_SLAVE_PTY
2041 #endif /* SETUP_SLAVE_PTY */
2043 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2044 Now reenable it in the child, so it will die when we want it to. */
2046 signal (SIGHUP
, SIG_DFL
);
2048 #endif /* HAVE_PTYS */
2050 signal (SIGINT
, SIG_DFL
);
2051 signal (SIGQUIT
, SIG_DFL
);
2053 /* Stop blocking signals in the child. */
2054 #ifdef POSIX_SIGNALS
2055 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2056 #else /* !POSIX_SIGNALS */
2060 #else /* not BSD4_1 */
2061 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2062 sigsetmask (SIGEMPTYMASK
);
2063 #else /* ordinary USG */
2065 signal (SIGCHLD
, sigchld
);
2067 #endif /* ordinary USG */
2068 #endif /* not BSD4_1 */
2069 #endif /* SIGCHLD */
2070 #endif /* !POSIX_SIGNALS */
2073 child_setup_tty (xforkout
);
2075 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2076 new_argv
, 1, current_dir
);
2077 #else /* not WINDOWSNT */
2078 child_setup (xforkin
, xforkout
, xforkout
,
2079 new_argv
, 1, current_dir
);
2080 #endif /* not WINDOWSNT */
2082 environ
= save_environ
;
2087 /* This runs in the Emacs process. */
2091 emacs_close (forkin
);
2092 if (forkin
!= forkout
&& forkout
>= 0)
2093 emacs_close (forkout
);
2097 /* vfork succeeded. */
2098 XSETFASTINT (XPROCESS (process
)->pid
, pid
);
2101 register_child (pid
, inchannel
);
2102 #endif /* WINDOWSNT */
2104 /* If the subfork execv fails, and it exits,
2105 this close hangs. I don't know why.
2106 So have an interrupt jar it loose. */
2108 struct atimer
*timer
;
2112 EMACS_SET_SECS_USECS (offset
, 1, 0);
2113 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2116 emacs_close (forkin
);
2118 cancel_atimer (timer
);
2122 if (forkin
!= forkout
&& forkout
>= 0)
2123 emacs_close (forkout
);
2127 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2130 XPROCESS (process
)->tty_name
= Qnil
;
2133 /* Restore the signal state whether vfork succeeded or not.
2134 (We will signal an error, below, if it failed.) */
2135 #ifdef POSIX_SIGNALS
2136 #ifdef HAVE_WORKING_VFORK
2137 /* Restore the parent's signal handlers. */
2138 sigaction (SIGINT
, &sigint_action
, 0);
2139 sigaction (SIGQUIT
, &sigquit_action
, 0);
2141 sigaction (SIGHUP
, &sighup_action
, 0);
2143 #endif /* HAVE_WORKING_VFORK */
2144 /* Stop blocking signals in the parent. */
2145 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2146 #else /* !POSIX_SIGNALS */
2150 #else /* not BSD4_1 */
2151 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2152 sigsetmask (SIGEMPTYMASK
);
2153 #else /* ordinary USG */
2155 signal (SIGCHLD
, sigchld
);
2156 /* Now really handle any of these signals
2157 that came in during this function. */
2158 if (sigchld_deferred
)
2159 kill (getpid (), SIGCHLD
);
2161 #endif /* ordinary USG */
2162 #endif /* not BSD4_1 */
2163 #endif /* SIGCHLD */
2164 #endif /* !POSIX_SIGNALS */
2166 /* Now generate the error if vfork failed. */
2168 report_file_error ("Doing vfork", Qnil
);
2170 #endif /* not VMS */
2175 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2176 The address family of sa is not included in the result. */
2179 conv_sockaddr_to_lisp (sa
, len
)
2180 struct sockaddr
*sa
;
2183 Lisp_Object address
;
2186 register struct Lisp_Vector
*p
;
2188 switch (sa
->sa_family
)
2192 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2193 len
= sizeof (sin
->sin_addr
) + 1;
2194 address
= Fmake_vector (make_number (len
), Qnil
);
2195 p
= XVECTOR (address
);
2196 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2197 cp
= (unsigned char *)&sin
->sin_addr
;
2200 #ifdef HAVE_LOCAL_SOCKETS
2203 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2204 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2205 if (sockun
->sun_path
[i
] == 0)
2207 return make_unibyte_string (sockun
->sun_path
, i
);
2211 len
-= sizeof (sa
->sa_family
);
2212 address
= Fcons (make_number (sa
->sa_family
),
2213 Fmake_vector (make_number (len
), Qnil
));
2214 p
= XVECTOR (XCDR (address
));
2215 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2221 p
->contents
[i
++] = make_number (*cp
++);
2227 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2230 get_lisp_to_sockaddr_size (address
, familyp
)
2231 Lisp_Object address
;
2234 register struct Lisp_Vector
*p
;
2236 if (VECTORP (address
))
2238 p
= XVECTOR (address
);
2242 return sizeof (struct sockaddr_in
);
2245 #ifdef HAVE_LOCAL_SOCKETS
2246 else if (STRINGP (address
))
2248 *familyp
= AF_LOCAL
;
2249 return sizeof (struct sockaddr_un
);
2252 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2254 struct sockaddr
*sa
;
2255 *familyp
= XINT (XCAR (address
));
2256 p
= XVECTOR (XCDR (address
));
2257 return p
->size
+ sizeof (sa
->sa_family
);
2262 /* Convert an address object (vector or string) to an internal sockaddr.
2263 Format of address has already been validated by size_lisp_to_sockaddr. */
2266 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2268 Lisp_Object address
;
2269 struct sockaddr
*sa
;
2272 register struct Lisp_Vector
*p
;
2273 register unsigned char *cp
= NULL
;
2277 sa
->sa_family
= family
;
2279 if (VECTORP (address
))
2281 p
= XVECTOR (address
);
2282 if (family
== AF_INET
)
2284 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2285 len
= sizeof (sin
->sin_addr
) + 1;
2286 i
= XINT (p
->contents
[--len
]);
2287 sin
->sin_port
= htons (i
);
2288 cp
= (unsigned char *)&sin
->sin_addr
;
2291 else if (STRINGP (address
))
2293 #ifdef HAVE_LOCAL_SOCKETS
2294 if (family
== AF_LOCAL
)
2296 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2297 cp
= SDATA (address
);
2298 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2299 sockun
->sun_path
[i
] = *cp
++;
2306 p
= XVECTOR (XCDR (address
));
2307 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2310 for (i
= 0; i
< len
; i
++)
2311 if (INTEGERP (p
->contents
[i
]))
2312 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2315 #ifdef DATAGRAM_SOCKETS
2316 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2318 doc
: /* Get the current datagram address associated with PROCESS. */)
2320 Lisp_Object process
;
2324 CHECK_PROCESS (process
);
2326 if (!DATAGRAM_CONN_P (process
))
2329 channel
= XINT (XPROCESS (process
)->infd
);
2330 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2331 datagram_address
[channel
].len
);
2334 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2336 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2337 Returns nil upon error setting address, ADDRESS otherwise. */)
2339 Lisp_Object process
, address
;
2344 CHECK_PROCESS (process
);
2346 if (!DATAGRAM_CONN_P (process
))
2349 channel
= XINT (XPROCESS (process
)->infd
);
2351 len
= get_lisp_to_sockaddr_size (address
, &family
);
2352 if (datagram_address
[channel
].len
!= len
)
2354 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2360 static struct socket_options
{
2361 /* The name of this option. Should be lowercase version of option
2362 name without SO_ prefix. */
2364 /* Option level SOL_... */
2366 /* Option number SO_... */
2368 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2369 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2370 } socket_options
[] =
2372 #ifdef SO_BINDTODEVICE
2373 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2376 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2379 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2382 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2385 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2388 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2391 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2394 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2396 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2399 /* Set option OPT to value VAL on socket S.
2401 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2402 Signals an error if setting a known option fails.
2406 set_socket_option (s
, opt
, val
)
2408 Lisp_Object opt
, val
;
2411 struct socket_options
*sopt
;
2416 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2417 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2418 if (strcmp (name
, sopt
->name
) == 0)
2421 switch (sopt
->opttype
)
2426 optval
= NILP (val
) ? 0 : 1;
2427 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2428 &optval
, sizeof (optval
));
2436 optval
= XINT (val
);
2438 error ("Bad option value for %s", name
);
2439 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2440 &optval
, sizeof (optval
));
2444 #ifdef SO_BINDTODEVICE
2447 char devname
[IFNAMSIZ
+1];
2449 /* This is broken, at least in the Linux 2.4 kernel.
2450 To unbind, the arg must be a zero integer, not the empty string.
2451 This should work on all systems. KFS. 2003-09-23. */
2452 bzero (devname
, sizeof devname
);
2455 char *arg
= (char *) SDATA (val
);
2456 int len
= min (strlen (arg
), IFNAMSIZ
);
2457 bcopy (arg
, devname
, len
);
2459 else if (!NILP (val
))
2460 error ("Bad option value for %s", name
);
2461 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2470 struct linger linger
;
2473 linger
.l_linger
= 0;
2475 linger
.l_linger
= XINT (val
);
2477 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2478 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2479 &linger
, sizeof (linger
));
2489 report_file_error ("Cannot set network option",
2490 Fcons (opt
, Fcons (val
, Qnil
)));
2491 return (1 << sopt
->optbit
);
2495 DEFUN ("set-network-process-option",
2496 Fset_network_process_option
, Sset_network_process_option
,
2498 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2499 See `make-network-process' for a list of options and values.
2500 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2501 OPTION is not a supported option, return nil instead; otherwise return t. */)
2502 (process
, option
, value
, no_error
)
2503 Lisp_Object process
, option
, value
;
2504 Lisp_Object no_error
;
2507 struct Lisp_Process
*p
;
2509 CHECK_PROCESS (process
);
2510 p
= XPROCESS (process
);
2511 if (!NETCONN1_P (p
))
2512 error ("Process is not a network process");
2516 error ("Process is not running");
2518 if (set_socket_option (s
, option
, value
))
2520 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2524 if (NILP (no_error
))
2525 error ("Unknown or unsupported option");
2531 /* A version of request_sigio suitable for a record_unwind_protect. */
2534 unwind_request_sigio (dummy
)
2537 if (interrupt_input
)
2542 /* Create a network stream/datagram client/server process. Treated
2543 exactly like a normal process when reading and writing. Primary
2544 differences are in status display and process deletion. A network
2545 connection has no PID; you cannot signal it. All you can do is
2546 stop/continue it and deactivate/close it via delete-process */
2548 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2550 doc
: /* Create and return a network server or client process.
2552 In Emacs, network connections are represented by process objects, so
2553 input and output work as for subprocesses and `delete-process' closes
2554 a network connection. However, a network process has no process id,
2555 it cannot be signalled, and the status codes are different from normal
2558 Arguments are specified as keyword/argument pairs. The following
2559 arguments are defined:
2561 :name NAME -- NAME is name for process. It is modified if necessary
2564 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2565 with the process. Process output goes at end of that buffer, unless
2566 you specify an output stream or filter function to handle the output.
2567 BUFFER may be also nil, meaning that this process is not associated
2570 :host HOST -- HOST is name of the host to connect to, or its IP
2571 address. The symbol `local' specifies the local host. If specified
2572 for a server process, it must be a valid name or address for the local
2573 host, and only clients connecting to that address will be accepted.
2575 :service SERVICE -- SERVICE is name of the service desired, or an
2576 integer specifying a port number to connect to. If SERVICE is t,
2577 a random port number is selected for the server.
2579 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2580 stream type connection, `datagram' creates a datagram type connection.
2582 :family FAMILY -- FAMILY is the address (and protocol) family for the
2583 service specified by HOST and SERVICE. The default address family is
2584 Inet (or IPv4) for the host and port number specified by HOST and
2585 SERVICE. Other address families supported are:
2586 local -- for a local (i.e. UNIX) address specified by SERVICE.
2588 :local ADDRESS -- ADDRESS is the local address used for the connection.
2589 This parameter is ignored when opening a client process. When specified
2590 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2592 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2593 connection. This parameter is ignored when opening a stream server
2594 process. For a datagram server process, it specifies the initial
2595 setting of the remote datagram address. When specified for a client
2596 process, the FAMILY, HOST, and SERVICE args are ignored.
2598 The format of ADDRESS depends on the address family:
2599 - An IPv4 address is represented as an vector of integers [A B C D P]
2600 corresponding to numeric IP address A.B.C.D and port number P.
2601 - A local address is represented as a string with the address in the
2602 local address space.
2603 - An "unsupported family" address is represented by a cons (F . AV)
2604 where F is the family number and AV is a vector containing the socket
2605 address data with one element per address data byte. Do not rely on
2606 this format in portable code, as it may depend on implementation
2607 defined constants, data sizes, and data structure alignment.
2609 :coding CODING -- If CODING is a symbol, it specifies the coding
2610 system used for both reading and writing for this process. If CODING
2611 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2612 ENCODING is used for writing.
2614 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2615 return without waiting for the connection to complete; instead, the
2616 sentinel function will be called with second arg matching "open" (if
2617 successful) or "failed" when the connect completes. Default is to use
2618 a blocking connect (i.e. wait) for stream type connections.
2620 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2621 running when Emacs is exited.
2623 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2624 In the stopped state, a server process does not accept new
2625 connections, and a client process does not handle incoming traffic.
2626 The stopped state is cleared by `continue-process' and set by
2629 :filter FILTER -- Install FILTER as the process filter.
2631 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2632 process filter are multibyte, otherwise they are unibyte.
2633 If this keyword is not specified, the strings are multibyte iff
2634 `default-enable-multibyte-characters' is non-nil.
2636 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2638 :log LOG -- Install LOG as the server process log function. This
2639 function is called when the server accepts a network connection from a
2640 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2641 is the server process, CLIENT is the new process for the connection,
2642 and MESSAGE is a string.
2644 :plist PLIST -- Install PLIST as the new process' initial plist.
2646 :server QLEN -- if QLEN is non-nil, create a server process for the
2647 specified FAMILY, SERVICE, and connection type (stream or datagram).
2648 If QLEN is an integer, it is used as the max. length of the server's
2649 pending connection queue (also known as the backlog); the default
2650 queue length is 5. Default is to create a client process.
2652 The following network options can be specified for this connection:
2654 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2655 :dontroute BOOL -- Only send to directly connected hosts.
2656 :keepalive BOOL -- Send keep-alive messages on network stream.
2657 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2658 :oobinline BOOL -- Place out-of-band data in receive data stream.
2659 :priority INT -- Set protocol defined priority for sent packets.
2660 :reuseaddr BOOL -- Allow reusing a recently used local address
2661 (this is allowed by default for a server process).
2662 :bindtodevice NAME -- bind to interface NAME. Using this may require
2663 special privileges on some systems.
2665 Consult the relevant system programmer's manual pages for more
2666 information on using these options.
2669 A server process will listen for and accept connections from clients.
2670 When a client connection is accepted, a new network process is created
2671 for the connection with the following parameters:
2673 - The client's process name is constructed by concatenating the server
2674 process' NAME and a client identification string.
2675 - If the FILTER argument is non-nil, the client process will not get a
2676 separate process buffer; otherwise, the client's process buffer is a newly
2677 created buffer named after the server process' BUFFER name or process
2678 NAME concatenated with the client identification string.
2679 - The connection type and the process filter and sentinel parameters are
2680 inherited from the server process' TYPE, FILTER and SENTINEL.
2681 - The client process' contact info is set according to the client's
2682 addressing information (typically an IP address and a port number).
2683 - The client process' plist is initialized from the server's plist.
2685 Notice that the FILTER and SENTINEL args are never used directly by
2686 the server process. Also, the BUFFER argument is not used directly by
2687 the server process, but via the optional :log function, accepted (and
2688 failed) connections may be logged in the server process' buffer.
2690 The original argument list, modified with the actual connection
2691 information, is available via the `process-contact' function.
2693 usage: (make-network-process &rest ARGS) */)
2699 Lisp_Object contact
;
2700 struct Lisp_Process
*p
;
2701 #ifdef HAVE_GETADDRINFO
2702 struct addrinfo ai
, *res
, *lres
;
2703 struct addrinfo hints
;
2704 char *portstring
, portbuf
[128];
2705 #else /* HAVE_GETADDRINFO */
2706 struct _emacs_addrinfo
2712 struct sockaddr
*ai_addr
;
2713 struct _emacs_addrinfo
*ai_next
;
2715 #endif /* HAVE_GETADDRINFO */
2716 struct sockaddr_in address_in
;
2717 #ifdef HAVE_LOCAL_SOCKETS
2718 struct sockaddr_un address_un
;
2723 int s
= -1, outch
, inch
;
2724 struct gcpro gcpro1
;
2726 int count
= SPECPDL_INDEX ();
2728 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2730 Lisp_Object name
, buffer
, host
, service
, address
;
2731 Lisp_Object filter
, sentinel
;
2732 int is_non_blocking_client
= 0;
2733 int is_server
= 0, backlog
= 5;
2740 /* Save arguments for process-contact and clone-process. */
2741 contact
= Flist (nargs
, args
);
2745 /* Ensure socket support is loaded if available. */
2746 init_winsock (TRUE
);
2749 /* :type TYPE (nil: stream, datagram */
2750 tem
= Fplist_get (contact
, QCtype
);
2752 socktype
= SOCK_STREAM
;
2753 #ifdef DATAGRAM_SOCKETS
2754 else if (EQ (tem
, Qdatagram
))
2755 socktype
= SOCK_DGRAM
;
2758 error ("Unsupported connection type");
2761 tem
= Fplist_get (contact
, QCserver
);
2764 /* Don't support network sockets when non-blocking mode is
2765 not available, since a blocked Emacs is not useful. */
2766 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2767 error ("Network servers not supported");
2771 backlog
= XINT (tem
);
2775 /* Make QCaddress an alias for :local (server) or :remote (client). */
2776 QCaddress
= is_server
? QClocal
: QCremote
;
2779 if (!is_server
&& socktype
== SOCK_STREAM
2780 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2782 #ifndef NON_BLOCKING_CONNECT
2783 error ("Non-blocking connect not supported");
2785 is_non_blocking_client
= 1;
2789 name
= Fplist_get (contact
, QCname
);
2790 buffer
= Fplist_get (contact
, QCbuffer
);
2791 filter
= Fplist_get (contact
, QCfilter
);
2792 sentinel
= Fplist_get (contact
, QCsentinel
);
2794 CHECK_STRING (name
);
2797 /* Let's handle TERM before things get complicated ... */
2798 host
= Fplist_get (contact
, QChost
);
2799 CHECK_STRING (host
);
2801 service
= Fplist_get (contact
, QCservice
);
2802 if (INTEGERP (service
))
2803 port
= htons ((unsigned short) XINT (service
));
2806 struct servent
*svc_info
;
2807 CHECK_STRING (service
);
2808 svc_info
= getservbyname (SDATA (service
), "tcp");
2810 error ("Unknown service: %s", SDATA (service
));
2811 port
= svc_info
->s_port
;
2814 s
= connect_server (0);
2816 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2817 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2818 send_command (s
, C_DUMB
, 1, 0);
2820 #else /* not TERM */
2822 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2823 ai
.ai_socktype
= socktype
;
2828 /* :local ADDRESS or :remote ADDRESS */
2829 address
= Fplist_get (contact
, QCaddress
);
2830 if (!NILP (address
))
2832 host
= service
= Qnil
;
2834 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2835 error ("Malformed :address");
2836 ai
.ai_family
= family
;
2837 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2838 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2842 /* :family FAMILY -- nil (for Inet), local, or integer. */
2843 tem
= Fplist_get (contact
, QCfamily
);
2845 family
= XINT (tem
);
2850 #ifdef HAVE_LOCAL_SOCKETS
2851 else if (EQ (tem
, Qlocal
))
2856 error ("Unknown address family");
2857 ai
.ai_family
= family
;
2859 /* :service SERVICE -- string, integer (port number), or t (random port). */
2860 service
= Fplist_get (contact
, QCservice
);
2862 #ifdef HAVE_LOCAL_SOCKETS
2863 if (family
== AF_LOCAL
)
2865 /* Host is not used. */
2867 CHECK_STRING (service
);
2868 bzero (&address_un
, sizeof address_un
);
2869 address_un
.sun_family
= AF_LOCAL
;
2870 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
2871 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2872 ai
.ai_addrlen
= sizeof address_un
;
2877 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2878 host
= Fplist_get (contact
, QChost
);
2881 if (EQ (host
, Qlocal
))
2882 host
= build_string ("localhost");
2883 CHECK_STRING (host
);
2886 /* Slow down polling to every ten seconds.
2887 Some kernels have a bug which causes retrying connect to fail
2888 after a connect. Polling can interfere with gethostbyname too. */
2889 #ifdef POLL_FOR_INPUT
2890 if (socktype
== SOCK_STREAM
)
2892 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
2893 bind_polling_period (10);
2897 #ifdef HAVE_GETADDRINFO
2898 /* If we have a host, use getaddrinfo to resolve both host and service.
2899 Otherwise, use getservbyname to lookup the service. */
2903 /* SERVICE can either be a string or int.
2904 Convert to a C string for later use by getaddrinfo. */
2905 if (EQ (service
, Qt
))
2907 else if (INTEGERP (service
))
2909 sprintf (portbuf
, "%ld", (long) XINT (service
));
2910 portstring
= portbuf
;
2914 CHECK_STRING (service
);
2915 portstring
= SDATA (service
);
2920 memset (&hints
, 0, sizeof (hints
));
2922 hints
.ai_family
= NILP (Fplist_member (contact
, QCfamily
)) ? AF_UNSPEC
: family
;
2923 hints
.ai_socktype
= socktype
;
2924 hints
.ai_protocol
= 0;
2925 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
2927 #ifdef HAVE_GAI_STRERROR
2928 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
2930 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
2936 #endif /* HAVE_GETADDRINFO */
2938 /* We end up here if getaddrinfo is not defined, or in case no hostname
2939 has been specified (e.g. for a local server process). */
2941 if (EQ (service
, Qt
))
2943 else if (INTEGERP (service
))
2944 port
= htons ((unsigned short) XINT (service
));
2947 struct servent
*svc_info
;
2948 CHECK_STRING (service
);
2949 svc_info
= getservbyname (SDATA (service
),
2950 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
2952 error ("Unknown service: %s", SDATA (service
));
2953 port
= svc_info
->s_port
;
2956 bzero (&address_in
, sizeof address_in
);
2957 address_in
.sin_family
= family
;
2958 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
2959 address_in
.sin_port
= port
;
2961 #ifndef HAVE_GETADDRINFO
2964 struct hostent
*host_info_ptr
;
2966 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
2967 as it may `hang' Emacs for a very long time. */
2970 host_info_ptr
= gethostbyname (SDATA (host
));
2975 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
2976 host_info_ptr
->h_length
);
2977 family
= host_info_ptr
->h_addrtype
;
2978 address_in
.sin_family
= family
;
2981 /* Attempt to interpret host as numeric inet address */
2983 IN_ADDR numeric_addr
;
2984 numeric_addr
= inet_addr ((char *) SDATA (host
));
2985 if (NUMERIC_ADDR_ERROR
)
2986 error ("Unknown host \"%s\"", SDATA (host
));
2988 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
2989 sizeof (address_in
.sin_addr
));
2993 #endif /* not HAVE_GETADDRINFO */
2995 ai
.ai_family
= family
;
2996 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
2997 ai
.ai_addrlen
= sizeof address_in
;
3001 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3002 when connect is interrupted. So let's not let it get interrupted.
3003 Note we do not turn off polling, because polling is only used
3004 when not interrupt_input, and thus not normally used on the systems
3005 which have this bug. On systems which use polling, there's no way
3006 to quit if polling is turned off. */
3008 && !is_server
&& socktype
== SOCK_STREAM
)
3010 /* Comment from KFS: The original open-network-stream code
3011 didn't unwind protect this, but it seems like the proper
3012 thing to do. In any case, I don't see how it could harm to
3013 do this -- and it makes cleanup (using unbind_to) easier. */
3014 record_unwind_protect (unwind_request_sigio
, Qnil
);
3018 /* Do this in case we never enter the for-loop below. */
3019 count1
= SPECPDL_INDEX ();
3022 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3028 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3035 #ifdef DATAGRAM_SOCKETS
3036 if (!is_server
&& socktype
== SOCK_DGRAM
)
3038 #endif /* DATAGRAM_SOCKETS */
3040 #ifdef NON_BLOCKING_CONNECT
3041 if (is_non_blocking_client
)
3044 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3046 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3058 /* Make us close S if quit. */
3059 record_unwind_protect (close_file_unwind
, make_number (s
));
3061 /* Parse network options in the arg list.
3062 We simply ignore anything which isn't a known option (including other keywords).
3063 An error is signalled if setting a known option fails. */
3064 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3065 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3069 /* Configure as a server socket. */
3071 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3072 explicit :reuseaddr key to override this. */
3073 #ifdef HAVE_LOCAL_SOCKETS
3074 if (family
!= AF_LOCAL
)
3076 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3079 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3080 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3083 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3084 report_file_error ("Cannot bind server socket", Qnil
);
3086 #ifdef HAVE_GETSOCKNAME
3087 if (EQ (service
, Qt
))
3089 struct sockaddr_in sa1
;
3090 int len1
= sizeof (sa1
);
3091 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3093 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3094 service
= make_number (ntohs (sa1
.sin_port
));
3095 contact
= Fplist_put (contact
, QCservice
, service
);
3100 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3101 report_file_error ("Cannot listen on server socket", Qnil
);
3109 /* This turns off all alarm-based interrupts; the
3110 bind_polling_period call above doesn't always turn all the
3111 short-interval ones off, especially if interrupt_input is
3114 It'd be nice to be able to control the connect timeout
3115 though. Would non-blocking connect calls be portable?
3117 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3119 turn_on_atimers (0);
3121 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3124 turn_on_atimers (1);
3126 if (ret
== 0 || xerrno
== EISCONN
)
3128 /* The unwind-protect will be discarded afterwards.
3129 Likewise for immediate_quit. */
3133 #ifdef NON_BLOCKING_CONNECT
3135 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3139 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3147 /* Discard the unwind protect closing S. */
3148 specpdl_ptr
= specpdl
+ count1
;
3152 if (xerrno
== EINTR
)
3158 #ifdef DATAGRAM_SOCKETS
3159 if (socktype
== SOCK_DGRAM
)
3161 if (datagram_address
[s
].sa
)
3163 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3164 datagram_address
[s
].len
= lres
->ai_addrlen
;
3168 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3169 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3172 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3173 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3174 conv_lisp_to_sockaddr (rfamily
, remote
,
3175 datagram_address
[s
].sa
, rlen
);
3179 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3182 contact
= Fplist_put (contact
, QCaddress
,
3183 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3184 #ifdef HAVE_GETSOCKNAME
3187 struct sockaddr_in sa1
;
3188 int len1
= sizeof (sa1
);
3189 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3190 contact
= Fplist_put (contact
, QClocal
,
3191 conv_sockaddr_to_lisp (&sa1
, len1
));
3196 #ifdef HAVE_GETADDRINFO
3203 /* Discard the unwind protect for closing S, if any. */
3204 specpdl_ptr
= specpdl
+ count1
;
3206 /* Unwind bind_polling_period and request_sigio. */
3207 unbind_to (count
, Qnil
);
3211 /* If non-blocking got this far - and failed - assume non-blocking is
3212 not supported after all. This is probably a wrong assumption, but
3213 the normal blocking calls to open-network-stream handles this error
3215 if (is_non_blocking_client
)
3220 report_file_error ("make server process failed", contact
);
3222 report_file_error ("make client process failed", contact
);
3225 #endif /* not TERM */
3231 buffer
= Fget_buffer_create (buffer
);
3232 proc
= make_process (name
);
3234 chan_process
[inch
] = proc
;
3237 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3240 fcntl (inch
, F_SETFL
, O_NDELAY
);
3244 p
= XPROCESS (proc
);
3246 p
->childp
= contact
;
3247 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3250 p
->sentinel
= sentinel
;
3252 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3253 /* Override the above only if :filter-multibyte is specified. */
3254 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3255 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3256 p
->log
= Fplist_get (contact
, QClog
);
3257 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3258 p
->kill_without_query
= Qt
;
3259 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3262 XSETINT (p
->infd
, inch
);
3263 XSETINT (p
->outfd
, outch
);
3264 if (is_server
&& socktype
== SOCK_STREAM
)
3265 p
->status
= Qlisten
;
3267 #ifdef NON_BLOCKING_CONNECT
3268 if (is_non_blocking_client
)
3270 /* We may get here if connect did succeed immediately. However,
3271 in that case, we still need to signal this like a non-blocking
3273 p
->status
= Qconnect
;
3274 if (!FD_ISSET (inch
, &connect_wait_mask
))
3276 FD_SET (inch
, &connect_wait_mask
);
3277 num_pending_connects
++;
3282 /* A server may have a client filter setting of Qt, but it must
3283 still listen for incoming connects unless it is stopped. */
3284 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3285 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3287 FD_SET (inch
, &input_wait_mask
);
3288 FD_SET (inch
, &non_keyboard_wait_mask
);
3291 if (inch
> max_process_desc
)
3292 max_process_desc
= inch
;
3294 tem
= Fplist_member (contact
, QCcoding
);
3295 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3296 tem
= Qnil
; /* No error message (too late!). */
3299 /* Setup coding systems for communicating with the network stream. */
3300 struct gcpro gcpro1
;
3301 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3302 Lisp_Object coding_systems
= Qt
;
3303 Lisp_Object args
[5], val
;
3307 val
= XCAR (XCDR (tem
));
3311 else if (!NILP (Vcoding_system_for_read
))
3312 val
= Vcoding_system_for_read
;
3313 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3314 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3315 /* We dare not decode end-of-line format by setting VAL to
3316 Qraw_text, because the existing Emacs Lisp libraries
3317 assume that they receive bare code including a sequene of
3322 if (NILP (host
) || NILP (service
))
3323 coding_systems
= Qnil
;
3326 args
[0] = Qopen_network_stream
, args
[1] = name
,
3327 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3329 coding_systems
= Ffind_operation_coding_system (5, args
);
3332 if (CONSP (coding_systems
))
3333 val
= XCAR (coding_systems
);
3334 else if (CONSP (Vdefault_process_coding_system
))
3335 val
= XCAR (Vdefault_process_coding_system
);
3339 p
->decode_coding_system
= val
;
3343 val
= XCAR (XCDR (tem
));
3347 else if (!NILP (Vcoding_system_for_write
))
3348 val
= Vcoding_system_for_write
;
3349 else if (NILP (current_buffer
->enable_multibyte_characters
))
3353 if (EQ (coding_systems
, Qt
))
3355 if (NILP (host
) || NILP (service
))
3356 coding_systems
= Qnil
;
3359 args
[0] = Qopen_network_stream
, args
[1] = name
,
3360 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3362 coding_systems
= Ffind_operation_coding_system (5, args
);
3366 if (CONSP (coding_systems
))
3367 val
= XCDR (coding_systems
);
3368 else if (CONSP (Vdefault_process_coding_system
))
3369 val
= XCDR (Vdefault_process_coding_system
);
3373 p
->encode_coding_system
= val
;
3375 setup_process_coding_systems (proc
);
3377 p
->decoding_buf
= make_uninit_string (0);
3378 p
->decoding_carryover
= make_number (0);
3379 p
->encoding_buf
= make_uninit_string (0);
3380 p
->encoding_carryover
= make_number (0);
3382 p
->inherit_coding_system_flag
3383 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3389 #endif /* HAVE_SOCKETS */
3392 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3395 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3396 doc
: /* Return an alist of all network interfaces and their network address.
3397 Each element is a cons, the car of which is a string containing the
3398 interface name, and the cdr is the network address in internal
3399 format; see the description of ADDRESS in `make-network-process'. */)
3402 struct ifconf ifconf
;
3403 struct ifreq
*ifreqs
= NULL
;
3408 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3414 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3415 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3422 ifconf
.ifc_len
= buf_size
;
3423 ifconf
.ifc_req
= ifreqs
;
3424 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3430 if (ifconf
.ifc_len
== buf_size
)
3434 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3437 while (--ifaces
>= 0)
3439 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3440 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3441 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3443 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3444 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3445 res
= Fcons (Fcons (build_string (namebuf
),
3446 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3447 sizeof (struct sockaddr
))),
3453 #endif /* SIOCGIFCONF */
3455 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3462 static struct ifflag_def ifflag_table
[] = {
3466 #ifdef IFF_BROADCAST
3467 { IFF_BROADCAST
, "broadcast" },
3470 { IFF_DEBUG
, "debug" },
3473 { IFF_LOOPBACK
, "loopback" },
3475 #ifdef IFF_POINTOPOINT
3476 { IFF_POINTOPOINT
, "pointopoint" },
3479 { IFF_RUNNING
, "running" },
3482 { IFF_NOARP
, "noarp" },
3485 { IFF_PROMISC
, "promisc" },
3487 #ifdef IFF_NOTRAILERS
3488 { IFF_NOTRAILERS
, "notrailers" },
3491 { IFF_ALLMULTI
, "allmulti" },
3494 { IFF_MASTER
, "master" },
3497 { IFF_SLAVE
, "slave" },
3499 #ifdef IFF_MULTICAST
3500 { IFF_MULTICAST
, "multicast" },
3503 { IFF_PORTSEL
, "portsel" },
3505 #ifdef IFF_AUTOMEDIA
3506 { IFF_AUTOMEDIA
, "automedia" },
3509 { IFF_DYNAMIC
, "dynamic" },
3514 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3515 doc
: /* Return information about network interface named IFNAME.
3516 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3517 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3518 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3519 FLAGS is the current flags of the interface. */)
3524 Lisp_Object res
= Qnil
;
3529 CHECK_STRING (ifname
);
3531 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3532 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3534 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3539 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3540 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3542 int flags
= rq
.ifr_flags
;
3543 struct ifflag_def
*fp
;
3547 for (fp
= ifflag_table
; flags
!= 0 && fp
; fp
++)
3549 if (flags
& fp
->flag_bit
)
3551 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3552 flags
-= fp
->flag_bit
;
3555 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3557 if (flags
& (1 << fnum
))
3559 elt
= Fcons (make_number (fnum
), elt
);
3564 res
= Fcons (elt
, res
);
3567 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3568 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3570 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3571 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3575 for (n
= 0; n
< 6; n
++)
3576 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3577 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3580 res
= Fcons (elt
, res
);
3583 #if defined(SIOCGIFNETMASK) && defined(ifr_netmask)
3584 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3587 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3590 res
= Fcons (elt
, res
);
3593 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3594 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3597 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3600 res
= Fcons (elt
, res
);
3603 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3604 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3607 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3610 res
= Fcons (elt
, res
);
3614 return any
? res
: Qnil
;
3617 #endif /* HAVE_SOCKETS */
3619 /* Turn off input and output for process PROC. */
3622 deactivate_process (proc
)
3625 register int inchannel
, outchannel
;
3626 register struct Lisp_Process
*p
= XPROCESS (proc
);
3628 inchannel
= XINT (p
->infd
);
3629 outchannel
= XINT (p
->outfd
);
3631 #ifdef ADAPTIVE_READ_BUFFERING
3632 if (XINT (p
->read_output_delay
) > 0)
3634 if (--process_output_delay_count
< 0)
3635 process_output_delay_count
= 0;
3636 XSETINT (p
->read_output_delay
, 0);
3637 p
->read_output_skip
= Qnil
;
3643 /* Beware SIGCHLD hereabouts. */
3644 flush_pending_output (inchannel
);
3647 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3648 sys$
dassgn (outchannel
);
3649 vs
= get_vms_process_pointer (p
->pid
);
3651 give_back_vms_process_stuff (vs
);
3654 emacs_close (inchannel
);
3655 if (outchannel
>= 0 && outchannel
!= inchannel
)
3656 emacs_close (outchannel
);
3659 XSETINT (p
->infd
, -1);
3660 XSETINT (p
->outfd
, -1);
3661 #ifdef DATAGRAM_SOCKETS
3662 if (DATAGRAM_CHAN_P (inchannel
))
3664 xfree (datagram_address
[inchannel
].sa
);
3665 datagram_address
[inchannel
].sa
= 0;
3666 datagram_address
[inchannel
].len
= 0;
3669 chan_process
[inchannel
] = Qnil
;
3670 FD_CLR (inchannel
, &input_wait_mask
);
3671 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3672 #ifdef NON_BLOCKING_CONNECT
3673 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3675 FD_CLR (inchannel
, &connect_wait_mask
);
3676 if (--num_pending_connects
< 0)
3680 if (inchannel
== max_process_desc
)
3683 /* We just closed the highest-numbered process input descriptor,
3684 so recompute the highest-numbered one now. */
3685 max_process_desc
= 0;
3686 for (i
= 0; i
< MAXDESC
; i
++)
3687 if (!NILP (chan_process
[i
]))
3688 max_process_desc
= i
;
3693 /* Close all descriptors currently in use for communication
3694 with subprocess. This is used in a newly-forked subprocess
3695 to get rid of irrelevant descriptors. */
3698 close_process_descs ()
3702 for (i
= 0; i
< MAXDESC
; i
++)
3704 Lisp_Object process
;
3705 process
= chan_process
[i
];
3706 if (!NILP (process
))
3708 int in
= XINT (XPROCESS (process
)->infd
);
3709 int out
= XINT (XPROCESS (process
)->outfd
);
3712 if (out
>= 0 && in
!= out
)
3719 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3721 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3722 It is read into the process' buffers or given to their filter functions.
3723 Non-nil arg PROCESS means do not return until some output has been received
3725 Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of
3726 seconds and microseconds to wait; return after that much time whether
3727 or not there is input.
3728 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3729 from PROCESS, suspending reading output from other processes.
3730 If JUST-THIS-ONE is an integer, don't run any timers either.
3731 Return non-nil iff we received any output before the timeout expired. */)
3732 (process
, timeout
, timeout_msecs
, just_this_one
)
3733 register Lisp_Object process
, timeout
, timeout_msecs
, just_this_one
;
3738 if (! NILP (process
))
3739 CHECK_PROCESS (process
);
3741 just_this_one
= Qnil
;
3743 if (! NILP (timeout_msecs
))
3745 CHECK_NUMBER (timeout_msecs
);
3746 useconds
= XINT (timeout_msecs
);
3747 if (!INTEGERP (timeout
))
3748 XSETINT (timeout
, 0);
3751 int carry
= useconds
/ 1000000;
3753 XSETINT (timeout
, XINT (timeout
) + carry
);
3754 useconds
-= carry
* 1000000;
3756 /* I think this clause is necessary because C doesn't
3757 guarantee a particular rounding direction for negative
3761 XSETINT (timeout
, XINT (timeout
) - 1);
3762 useconds
+= 1000000;
3769 if (! NILP (timeout
))
3771 CHECK_NUMBER (timeout
);
3772 seconds
= XINT (timeout
);
3773 if (seconds
< 0 || (seconds
== 0 && useconds
== 0))
3777 seconds
= NILP (process
) ? -1 : 0;
3780 (wait_reading_process_output (seconds
, useconds
, 0, 0,
3782 !NILP (process
) ? XPROCESS (process
) : NULL
,
3783 NILP (just_this_one
) ? 0 :
3784 !INTEGERP (just_this_one
) ? 1 : -1)
3788 /* Accept a connection for server process SERVER on CHANNEL. */
3790 static int connect_counter
= 0;
3793 server_accept_connection (server
, channel
)
3797 Lisp_Object proc
, caller
, name
, buffer
;
3798 Lisp_Object contact
, host
, service
;
3799 struct Lisp_Process
*ps
= XPROCESS (server
);
3800 struct Lisp_Process
*p
;
3804 struct sockaddr_in in
;
3805 #ifdef HAVE_LOCAL_SOCKETS
3806 struct sockaddr_un un
;
3809 int len
= sizeof saddr
;
3811 s
= accept (channel
, &saddr
.sa
, &len
);
3820 if (code
== EWOULDBLOCK
)
3824 if (!NILP (ps
->log
))
3825 call3 (ps
->log
, server
, Qnil
,
3826 concat3 (build_string ("accept failed with code"),
3827 Fnumber_to_string (make_number (code
)),
3828 build_string ("\n")));
3834 /* Setup a new process to handle the connection. */
3836 /* Generate a unique identification of the caller, and build contact
3837 information for this process. */
3840 switch (saddr
.sa
.sa_family
)
3844 Lisp_Object args
[5];
3845 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
3846 args
[0] = build_string ("%d.%d.%d.%d");
3847 args
[1] = make_number (*ip
++);
3848 args
[2] = make_number (*ip
++);
3849 args
[3] = make_number (*ip
++);
3850 args
[4] = make_number (*ip
++);
3851 host
= Fformat (5, args
);
3852 service
= make_number (ntohs (saddr
.in
.sin_port
));
3854 args
[0] = build_string (" <%s:%d>");
3857 caller
= Fformat (3, args
);
3861 #ifdef HAVE_LOCAL_SOCKETS
3865 caller
= Fnumber_to_string (make_number (connect_counter
));
3866 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
3870 /* Create a new buffer name for this process if it doesn't have a
3871 filter. The new buffer name is based on the buffer name or
3872 process name of the server process concatenated with the caller
3875 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
3879 buffer
= ps
->buffer
;
3881 buffer
= Fbuffer_name (buffer
);
3886 buffer
= concat2 (buffer
, caller
);
3887 buffer
= Fget_buffer_create (buffer
);
3891 /* Generate a unique name for the new server process. Combine the
3892 server process name with the caller identification. */
3894 name
= concat2 (ps
->name
, caller
);
3895 proc
= make_process (name
);
3897 chan_process
[s
] = proc
;
3900 fcntl (s
, F_SETFL
, O_NONBLOCK
);
3903 fcntl (s
, F_SETFL
, O_NDELAY
);
3907 p
= XPROCESS (proc
);
3909 /* Build new contact information for this setup. */
3910 contact
= Fcopy_sequence (ps
->childp
);
3911 contact
= Fplist_put (contact
, QCserver
, Qnil
);
3912 contact
= Fplist_put (contact
, QChost
, host
);
3913 if (!NILP (service
))
3914 contact
= Fplist_put (contact
, QCservice
, service
);
3915 contact
= Fplist_put (contact
, QCremote
,
3916 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3917 #ifdef HAVE_GETSOCKNAME
3919 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
3920 contact
= Fplist_put (contact
, QClocal
,
3921 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3924 p
->childp
= contact
;
3925 p
->plist
= Fcopy_sequence (ps
->plist
);
3928 p
->sentinel
= ps
->sentinel
;
3929 p
->filter
= ps
->filter
;
3932 XSETINT (p
->infd
, s
);
3933 XSETINT (p
->outfd
, s
);
3936 /* Client processes for accepted connections are not stopped initially. */
3937 if (!EQ (p
->filter
, Qt
))
3939 FD_SET (s
, &input_wait_mask
);
3940 FD_SET (s
, &non_keyboard_wait_mask
);
3943 if (s
> max_process_desc
)
3944 max_process_desc
= s
;
3946 /* Setup coding system for new process based on server process.
3947 This seems to be the proper thing to do, as the coding system
3948 of the new process should reflect the settings at the time the
3949 server socket was opened; not the current settings. */
3951 p
->decode_coding_system
= ps
->decode_coding_system
;
3952 p
->encode_coding_system
= ps
->encode_coding_system
;
3953 setup_process_coding_systems (proc
);
3955 p
->decoding_buf
= make_uninit_string (0);
3956 p
->decoding_carryover
= make_number (0);
3957 p
->encoding_buf
= make_uninit_string (0);
3958 p
->encoding_carryover
= make_number (0);
3960 p
->inherit_coding_system_flag
3961 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
3963 if (!NILP (ps
->log
))
3964 call3 (ps
->log
, server
, proc
,
3965 concat3 (build_string ("accept from "),
3966 (STRINGP (host
) ? host
: build_string ("-")),
3967 build_string ("\n")));
3969 if (!NILP (p
->sentinel
))
3970 exec_sentinel (proc
,
3971 concat3 (build_string ("open from "),
3972 (STRINGP (host
) ? host
: build_string ("-")),
3973 build_string ("\n")));
3976 /* This variable is different from waiting_for_input in keyboard.c.
3977 It is used to communicate to a lisp process-filter/sentinel (via the
3978 function Fwaiting_for_user_input_p below) whether Emacs was waiting
3979 for user-input when that process-filter was called.
3980 waiting_for_input cannot be used as that is by definition 0 when
3981 lisp code is being evalled.
3982 This is also used in record_asynch_buffer_change.
3983 For that purpose, this must be 0
3984 when not inside wait_reading_process_output. */
3985 static int waiting_for_user_input_p
;
3987 /* This is here so breakpoints can be put on it. */
3989 wait_reading_process_output_1 ()
3993 /* Read and dispose of subprocess output while waiting for timeout to
3994 elapse and/or keyboard input to be available.
3997 timeout in seconds, or
3998 zero for no limit, or
3999 -1 means gobble data immediately available but don't wait for any.
4002 an additional duration to wait, measured in microseconds.
4003 If this is nonzero and time_limit is 0, then the timeout
4004 consists of MICROSECS only.
4006 READ_KBD is a lisp value:
4007 0 to ignore keyboard input, or
4008 1 to return when input is available, or
4009 -1 meaning caller will actually read the input, so don't throw to
4010 the quit handler, or
4012 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4013 output that arrives.
4015 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4016 (and gobble terminal input into the buffer if any arrives).
4018 If WAIT_PROC is specified, wait until something arrives from that
4019 process. The return value is true iff we read some input from
4022 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4023 (suspending output from other processes). A negative value
4024 means don't run any timers either.
4026 If WAIT_PROC is specified, then the function returns true iff we
4027 received input from that process before the timeout elapsed.
4028 Otherwise, return true iff we received input from any process. */
4031 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4032 wait_for_cell
, wait_proc
, just_wait_proc
)
4033 int time_limit
, microsecs
, read_kbd
, do_display
;
4034 Lisp_Object wait_for_cell
;
4035 struct Lisp_Process
*wait_proc
;
4038 register int channel
, nfds
;
4039 SELECT_TYPE Available
;
4040 #ifdef NON_BLOCKING_CONNECT
4041 SELECT_TYPE Connecting
;
4044 int check_delay
, no_avail
;
4047 EMACS_TIME timeout
, end_time
;
4048 int wait_channel
= -1;
4049 int got_some_input
= 0;
4050 /* Either nil or a cons cell, the car of which is of interest and
4051 may be changed outside of this routine. */
4052 int saved_waiting_for_user_input_p
= waiting_for_user_input_p
;
4054 FD_ZERO (&Available
);
4055 #ifdef NON_BLOCKING_CONNECT
4056 FD_ZERO (&Connecting
);
4059 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4060 if (wait_proc
!= NULL
)
4061 wait_channel
= XINT (wait_proc
->infd
);
4063 waiting_for_user_input_p
= read_kbd
;
4065 /* Since we may need to wait several times,
4066 compute the absolute time to return at. */
4067 if (time_limit
|| microsecs
)
4069 EMACS_GET_TIME (end_time
);
4070 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4071 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4073 #ifdef POLL_INTERRUPTED_SYS_CALL
4074 /* AlainF 5-Jul-1996
4075 HP-UX 10.10 seem to have problems with signals coming in
4076 Causes "poll: interrupted system call" messages when Emacs is run
4078 Turn off periodic alarms (in case they are in use),
4079 and then turn off any other atimers. */
4081 turn_on_atimers (0);
4082 #endif /* POLL_INTERRUPTED_SYS_CALL */
4086 int timeout_reduced_for_timers
= 0;
4088 /* If calling from keyboard input, do not quit
4089 since we want to return C-g as an input character.
4090 Otherwise, do pending quit if requested. */
4094 else if (interrupt_input_pending
)
4095 handle_async_input ();
4098 /* Exit now if the cell we're waiting for became non-nil. */
4099 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4102 /* Compute time from now till when time limit is up */
4103 /* Exit if already run out */
4104 if (time_limit
== -1)
4106 /* -1 specified for timeout means
4107 gobble output available now
4108 but don't wait at all. */
4110 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4112 else if (time_limit
|| microsecs
)
4114 EMACS_GET_TIME (timeout
);
4115 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4116 if (EMACS_TIME_NEG_P (timeout
))
4121 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4124 /* Normally we run timers here.
4125 But not if wait_for_cell; in those cases,
4126 the wait is supposed to be short,
4127 and those callers cannot handle running arbitrary Lisp code here. */
4128 if (NILP (wait_for_cell
)
4129 && just_wait_proc
>= 0)
4131 EMACS_TIME timer_delay
;
4135 int old_timers_run
= timers_run
;
4136 struct buffer
*old_buffer
= current_buffer
;
4138 timer_delay
= timer_check (1);
4140 /* If a timer has run, this might have changed buffers
4141 an alike. Make read_key_sequence aware of that. */
4142 if (timers_run
!= old_timers_run
4143 && old_buffer
!= current_buffer
4144 && waiting_for_user_input_p
== -1)
4145 record_asynch_buffer_change ();
4147 if (timers_run
!= old_timers_run
&& do_display
)
4148 /* We must retry, since a timer may have requeued itself
4149 and that could alter the time_delay. */
4150 redisplay_preserve_echo_area (9);
4154 while (!detect_input_pending ());
4156 /* If there is unread keyboard input, also return. */
4158 && requeued_events_pending_p ())
4161 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4163 EMACS_TIME difference
;
4164 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4165 if (EMACS_TIME_NEG_P (difference
))
4167 timeout
= timer_delay
;
4168 timeout_reduced_for_timers
= 1;
4171 /* If time_limit is -1, we are not going to wait at all. */
4172 else if (time_limit
!= -1)
4174 /* This is so a breakpoint can be put here. */
4175 wait_reading_process_output_1 ();
4179 /* Cause C-g and alarm signals to take immediate action,
4180 and cause input available signals to zero out timeout.
4182 It is important that we do this before checking for process
4183 activity. If we get a SIGCHLD after the explicit checks for
4184 process activity, timeout is the only way we will know. */
4186 set_waiting_for_input (&timeout
);
4188 /* If status of something has changed, and no input is
4189 available, notify the user of the change right away. After
4190 this explicit check, we'll let the SIGCHLD handler zap
4191 timeout to get our attention. */
4192 if (update_tick
!= process_tick
&& do_display
)
4195 #ifdef NON_BLOCKING_CONNECT
4199 Atemp
= input_wait_mask
;
4201 /* On Mac OS X 10.0, the SELECT system call always says input is
4202 present (for reading) at stdin, even when none is. This
4203 causes the call to SELECT below to return 1 and
4204 status_notify not to be called. As a result output of
4205 subprocesses are incorrectly discarded.
4209 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4211 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4212 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4214 #ifdef NON_BLOCKING_CONNECT
4215 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4219 (SELECT_TYPE
*)0, &timeout
)
4222 /* It's okay for us to do this and then continue with
4223 the loop, since timeout has already been zeroed out. */
4224 clear_waiting_for_input ();
4229 /* Don't wait for output from a non-running process. Just
4230 read whatever data has already been received. */
4231 if (wait_proc
!= 0 && !NILP (wait_proc
->raw_status_low
))
4232 update_status (wait_proc
);
4234 && ! EQ (wait_proc
->status
, Qrun
)
4235 && ! EQ (wait_proc
->status
, Qconnect
))
4237 int nread
, total_nread
= 0;
4239 clear_waiting_for_input ();
4240 XSETPROCESS (proc
, wait_proc
);
4242 /* Read data from the process, until we exhaust it. */
4243 while (XINT (wait_proc
->infd
) >= 0)
4245 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4251 total_nread
+= nread
;
4253 else if (nread
== -1 && EIO
== errno
)
4257 else if (nread
== -1 && EAGAIN
== errno
)
4261 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4265 if (total_nread
> 0 && do_display
)
4266 redisplay_preserve_echo_area (10);
4271 /* Wait till there is something to do */
4273 if (wait_proc
&& just_wait_proc
)
4275 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4277 FD_SET (XINT (wait_proc
->infd
), &Available
);
4279 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4281 else if (!NILP (wait_for_cell
))
4283 Available
= non_process_wait_mask
;
4285 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4290 Available
= non_keyboard_wait_mask
;
4292 Available
= input_wait_mask
;
4293 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4294 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4297 /* If frame size has changed or the window is newly mapped,
4298 redisplay now, before we start to wait. There is a race
4299 condition here; if a SIGIO arrives between now and the select
4300 and indicates that a frame is trashed, the select may block
4301 displaying a trashed screen. */
4302 if (frame_garbaged
&& do_display
)
4304 clear_waiting_for_input ();
4305 redisplay_preserve_echo_area (11);
4307 set_waiting_for_input (&timeout
);
4311 if (read_kbd
&& detect_input_pending ())
4318 #ifdef NON_BLOCKING_CONNECT
4320 Connecting
= connect_wait_mask
;
4323 #ifdef ADAPTIVE_READ_BUFFERING
4324 if (process_output_skip
&& check_delay
> 0)
4326 int usecs
= EMACS_USECS (timeout
);
4327 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4328 usecs
= READ_OUTPUT_DELAY_MAX
;
4329 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4331 proc
= chan_process
[channel
];
4334 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4337 if (NILP (XPROCESS (proc
)->read_output_skip
))
4339 FD_CLR (channel
, &Available
);
4340 XPROCESS (proc
)->read_output_skip
= Qnil
;
4341 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4342 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4345 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4346 process_output_skip
= 0;
4350 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4352 #ifdef NON_BLOCKING_CONNECT
4353 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4357 (SELECT_TYPE
*)0, &timeout
);
4362 /* Make C-g and alarm signals set flags again */
4363 clear_waiting_for_input ();
4365 /* If we woke up due to SIGWINCH, actually change size now. */
4366 do_pending_window_change (0);
4368 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4369 /* We wanted the full specified time, so return now. */
4373 if (xerrno
== EINTR
)
4376 /* Ultrix select seems to return ENOMEM when it is
4377 interrupted. Treat it just like EINTR. Bleah. Note
4378 that we want to test for the "ultrix" CPP symbol, not
4379 "__ultrix__"; the latter is only defined under GCC, but
4380 not by DEC's bundled CC. -JimB */
4381 else if (xerrno
== ENOMEM
)
4385 /* This happens for no known reason on ALLIANT.
4386 I am guessing that this is the right response. -- RMS. */
4387 else if (xerrno
== EFAULT
)
4390 else if (xerrno
== EBADF
)
4393 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4394 the child's closure of the pts gives the parent a SIGHUP, and
4395 the ptc file descriptor is automatically closed,
4396 yielding EBADF here or at select() call above.
4397 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4398 in m/ibmrt-aix.h), and here we just ignore the select error.
4399 Cleanup occurs c/o status_notify after SIGCLD. */
4400 no_avail
= 1; /* Cannot depend on values returned */
4406 error ("select error: %s", emacs_strerror (xerrno
));
4411 FD_ZERO (&Available
);
4412 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4415 #if defined(sun) && !defined(USG5_4)
4416 if (nfds
> 0 && keyboard_bit_set (&Available
)
4418 /* System sometimes fails to deliver SIGIO.
4420 David J. Mackenzie says that Emacs doesn't compile under
4421 Solaris if this code is enabled, thus the USG5_4 in the CPP
4422 conditional. "I haven't noticed any ill effects so far.
4423 If you find a Solaris expert somewhere, they might know
4425 kill (getpid (), SIGIO
);
4428 #if 0 /* When polling is used, interrupt_input is 0,
4429 so get_input_pending should read the input.
4430 So this should not be needed. */
4431 /* If we are using polling for input,
4432 and we see input available, make it get read now.
4433 Otherwise it might not actually get read for a second.
4434 And on hpux, since we turn off polling in wait_reading_process_output,
4435 it might never get read at all if we don't spend much time
4436 outside of wait_reading_process_output. */
4437 if (read_kbd
&& interrupt_input
4438 && keyboard_bit_set (&Available
)
4439 && input_polling_used ())
4440 kill (getpid (), SIGALRM
);
4443 /* Check for keyboard input */
4444 /* If there is any, return immediately
4445 to give it higher priority than subprocesses */
4449 int old_timers_run
= timers_run
;
4450 struct buffer
*old_buffer
= current_buffer
;
4453 if (detect_input_pending_run_timers (do_display
))
4455 swallow_events (do_display
);
4456 if (detect_input_pending_run_timers (do_display
))
4460 /* If a timer has run, this might have changed buffers
4461 an alike. Make read_key_sequence aware of that. */
4462 if (timers_run
!= old_timers_run
4463 && waiting_for_user_input_p
== -1
4464 && old_buffer
!= current_buffer
)
4465 record_asynch_buffer_change ();
4471 /* If there is unread keyboard input, also return. */
4473 && requeued_events_pending_p ())
4476 /* If we are not checking for keyboard input now,
4477 do process events (but don't run any timers).
4478 This is so that X events will be processed.
4479 Otherwise they may have to wait until polling takes place.
4480 That would causes delays in pasting selections, for example.
4482 (We used to do this only if wait_for_cell.) */
4483 if (read_kbd
== 0 && detect_input_pending ())
4485 swallow_events (do_display
);
4486 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4487 if (detect_input_pending ())
4492 /* Exit now if the cell we're waiting for became non-nil. */
4493 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4497 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4498 go read it. This can happen with X on BSD after logging out.
4499 In that case, there really is no input and no SIGIO,
4500 but select says there is input. */
4502 if (read_kbd
&& interrupt_input
4503 && keyboard_bit_set (&Available
) && ! noninteractive
)
4504 kill (getpid (), SIGIO
);
4508 got_some_input
|= nfds
> 0;
4510 /* If checking input just got us a size-change event from X,
4511 obey it now if we should. */
4512 if (read_kbd
|| ! NILP (wait_for_cell
))
4513 do_pending_window_change (0);
4515 /* Check for data from a process. */
4516 if (no_avail
|| nfds
== 0)
4519 /* Really FIRST_PROC_DESC should be 0 on Unix,
4520 but this is safer in the short run. */
4521 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4523 if (FD_ISSET (channel
, &Available
)
4524 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4528 /* If waiting for this channel, arrange to return as
4529 soon as no more input to be processed. No more
4531 if (wait_channel
== channel
)
4537 proc
= chan_process
[channel
];
4541 /* If this is a server stream socket, accept connection. */
4542 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4544 server_accept_connection (proc
, channel
);
4548 /* Read data from the process, starting with our
4549 buffered-ahead character if we have one. */
4551 nread
= read_process_output (proc
, channel
);
4554 /* Since read_process_output can run a filter,
4555 which can call accept-process-output,
4556 don't try to read from any other processes
4557 before doing the select again. */
4558 FD_ZERO (&Available
);
4561 redisplay_preserve_echo_area (12);
4564 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4567 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4568 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4570 else if (nread
== -1 && errno
== EAGAIN
)
4574 else if (nread
== -1 && errno
== EAGAIN
)
4576 /* Note that we cannot distinguish between no input
4577 available now and a closed pipe.
4578 With luck, a closed pipe will be accompanied by
4579 subprocess termination and SIGCHLD. */
4580 else if (nread
== 0 && !NETCONN_P (proc
))
4582 #endif /* O_NDELAY */
4583 #endif /* O_NONBLOCK */
4585 /* On some OSs with ptys, when the process on one end of
4586 a pty exits, the other end gets an error reading with
4587 errno = EIO instead of getting an EOF (0 bytes read).
4588 Therefore, if we get an error reading and errno =
4589 EIO, just continue, because the child process has
4590 exited and should clean itself up soon (e.g. when we
4593 However, it has been known to happen that the SIGCHLD
4594 got lost. So raise the signl again just in case.
4596 else if (nread
== -1 && errno
== EIO
)
4597 kill (getpid (), SIGCHLD
);
4598 #endif /* HAVE_PTYS */
4599 /* If we can detect process termination, don't consider the process
4600 gone just because its pipe is closed. */
4602 else if (nread
== 0 && !NETCONN_P (proc
))
4607 /* Preserve status of processes already terminated. */
4608 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4609 deactivate_process (proc
);
4610 if (!NILP (XPROCESS (proc
)->raw_status_low
))
4611 update_status (XPROCESS (proc
));
4612 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4613 XPROCESS (proc
)->status
4614 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4617 #ifdef NON_BLOCKING_CONNECT
4618 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4619 && FD_ISSET (channel
, &connect_wait_mask
))
4621 struct Lisp_Process
*p
;
4623 FD_CLR (channel
, &connect_wait_mask
);
4624 if (--num_pending_connects
< 0)
4627 proc
= chan_process
[channel
];
4631 p
= XPROCESS (proc
);
4634 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4635 So only use it on systems where it is known to work. */
4637 int xlen
= sizeof(xerrno
);
4638 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4643 struct sockaddr pname
;
4644 int pnamelen
= sizeof(pname
);
4646 /* If connection failed, getpeername will fail. */
4648 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4650 /* Obtain connect failure code through error slippage. */
4653 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4660 XSETINT (p
->tick
, ++process_tick
);
4661 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4662 deactivate_process (proc
);
4667 /* Execute the sentinel here. If we had relied on
4668 status_notify to do it later, it will read input
4669 from the process before calling the sentinel. */
4670 exec_sentinel (proc
, build_string ("open\n"));
4671 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4673 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4674 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4678 #endif /* NON_BLOCKING_CONNECT */
4679 } /* end for each file descriptor */
4680 } /* end while exit conditions not met */
4682 waiting_for_user_input_p
= saved_waiting_for_user_input_p
;
4684 /* If calling from keyboard input, do not quit
4685 since we want to return C-g as an input character.
4686 Otherwise, do pending quit if requested. */
4689 /* Prevent input_pending from remaining set if we quit. */
4690 clear_input_pending ();
4693 #ifdef POLL_INTERRUPTED_SYS_CALL
4694 /* AlainF 5-Jul-1996
4695 HP-UX 10.10 seems to have problems with signals coming in
4696 Causes "poll: interrupted system call" messages when Emacs is run
4698 Turn periodic alarms back on */
4700 #endif /* POLL_INTERRUPTED_SYS_CALL */
4702 return got_some_input
;
4705 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4708 read_process_output_call (fun_and_args
)
4709 Lisp_Object fun_and_args
;
4711 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4715 read_process_output_error_handler (error
)
4718 cmd_error_internal (error
, "error in process filter: ");
4720 update_echo_area ();
4721 Fsleep_for (make_number (2), Qnil
);
4725 /* Read pending output from the process channel,
4726 starting with our buffered-ahead character if we have one.
4727 Yield number of decoded characters read.
4729 This function reads at most 4096 characters.
4730 If you want to read all available subprocess output,
4731 you must call it repeatedly until it returns zero.
4733 The characters read are decoded according to PROC's coding-system
4737 read_process_output (proc
, channel
)
4739 register int channel
;
4741 register int nbytes
;
4743 register Lisp_Object outstream
;
4744 register struct buffer
*old
= current_buffer
;
4745 register struct Lisp_Process
*p
= XPROCESS (proc
);
4746 register int opoint
;
4747 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4748 int carryover
= XINT (p
->decoding_carryover
);
4752 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4754 vs
= get_vms_process_pointer (p
->pid
);
4758 return (0); /* Really weird if it does this */
4759 if (!(vs
->iosb
[0] & 1))
4760 return -1; /* I/O error */
4763 error ("Could not get VMS process pointer");
4764 chars
= vs
->inputBuffer
;
4765 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4768 start_vms_process_read (vs
); /* Crank up the next read on the process */
4769 return 1; /* Nothing worth printing, say we got 1 */
4773 /* The data carried over in the previous decoding (which are at
4774 the tail of decoding buffer) should be prepended to the new
4775 data read to decode all together. */
4776 chars
= (char *) alloca (nbytes
+ carryover
);
4777 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
4778 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
4782 chars
= (char *) alloca (carryover
+ readmax
);
4784 /* See the comment above. */
4785 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
4787 #ifdef DATAGRAM_SOCKETS
4788 /* We have a working select, so proc_buffered_char is always -1. */
4789 if (DATAGRAM_CHAN_P (channel
))
4791 int len
= datagram_address
[channel
].len
;
4792 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4793 0, datagram_address
[channel
].sa
, &len
);
4797 if (proc_buffered_char
[channel
] < 0)
4799 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
4800 #ifdef ADAPTIVE_READ_BUFFERING
4801 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
4803 int delay
= XINT (p
->read_output_delay
);
4806 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4809 process_output_delay_count
++;
4810 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
4813 else if (delay
> 0 && (nbytes
== readmax
))
4815 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
4817 process_output_delay_count
--;
4819 XSETINT (p
->read_output_delay
, delay
);
4822 p
->read_output_skip
= Qt
;
4823 process_output_skip
= 1;
4830 chars
[carryover
] = proc_buffered_char
[channel
];
4831 proc_buffered_char
[channel
] = -1;
4832 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
4836 nbytes
= nbytes
+ 1;
4838 #endif /* not VMS */
4840 XSETINT (p
->decoding_carryover
, 0);
4842 /* At this point, NBYTES holds number of bytes just received
4843 (including the one in proc_buffered_char[channel]). */
4846 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
4848 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
4851 /* Now set NBYTES how many bytes we must decode. */
4852 nbytes
+= carryover
;
4854 /* Read and dispose of the process output. */
4855 outstream
= p
->filter
;
4856 if (!NILP (outstream
))
4858 /* We inhibit quit here instead of just catching it so that
4859 hitting ^G when a filter happens to be running won't screw
4861 int count
= SPECPDL_INDEX ();
4862 Lisp_Object odeactivate
;
4863 Lisp_Object obuffer
, okeymap
;
4865 int outer_running_asynch_code
= running_asynch_code
;
4866 int waiting
= waiting_for_user_input_p
;
4868 /* No need to gcpro these, because all we do with them later
4869 is test them for EQness, and none of them should be a string. */
4870 odeactivate
= Vdeactivate_mark
;
4871 XSETBUFFER (obuffer
, current_buffer
);
4872 okeymap
= current_buffer
->keymap
;
4874 specbind (Qinhibit_quit
, Qt
);
4875 specbind (Qlast_nonmenu_event
, Qt
);
4877 /* In case we get recursively called,
4878 and we already saved the match data nonrecursively,
4879 save the same match data in safely recursive fashion. */
4880 if (outer_running_asynch_code
)
4883 /* Don't clobber the CURRENT match data, either! */
4884 tem
= Fmatch_data (Qnil
, Qnil
);
4885 restore_match_data ();
4886 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
4887 Fset_match_data (tem
);
4890 /* For speed, if a search happens within this code,
4891 save the match data in a special nonrecursive fashion. */
4892 running_asynch_code
= 1;
4894 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
4896 Vlast_coding_system_used
= coding
->symbol
;
4897 /* A new coding system might be found. */
4898 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
4900 p
->decode_coding_system
= coding
->symbol
;
4902 /* Don't call setup_coding_system for
4903 proc_decode_coding_system[channel] here. It is done in
4904 detect_coding called via decode_coding above. */
4906 /* If a coding system for encoding is not yet decided, we set
4907 it as the same as coding-system for decoding.
4909 But, before doing that we must check if
4910 proc_encode_coding_system[p->outfd] surely points to a
4911 valid memory because p->outfd will be changed once EOF is
4912 sent to the process. */
4913 if (NILP (p
->encode_coding_system
)
4914 && proc_encode_coding_system
[XINT (p
->outfd
)])
4916 p
->encode_coding_system
= coding
->symbol
;
4917 setup_coding_system (coding
->symbol
,
4918 proc_encode_coding_system
[XINT (p
->outfd
)]);
4922 carryover
= nbytes
- coding
->consumed
;
4923 if (SCHARS (p
->decoding_buf
) < carryover
)
4924 p
->decoding_buf
= make_uninit_string (carryover
);
4925 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
4927 XSETINT (p
->decoding_carryover
, carryover
);
4928 /* Adjust the multibyteness of TEXT to that of the filter. */
4929 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
4930 text
= (STRING_MULTIBYTE (text
)
4931 ? Fstring_as_unibyte (text
)
4932 : Fstring_to_multibyte (text
));
4933 if (SBYTES (text
) > 0)
4934 internal_condition_case_1 (read_process_output_call
,
4936 Fcons (proc
, Fcons (text
, Qnil
))),
4937 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
4938 read_process_output_error_handler
);
4940 /* If we saved the match data nonrecursively, restore it now. */
4941 restore_match_data ();
4942 running_asynch_code
= outer_running_asynch_code
;
4944 /* Handling the process output should not deactivate the mark. */
4945 Vdeactivate_mark
= odeactivate
;
4947 /* Restore waiting_for_user_input_p as it was
4948 when we were called, in case the filter clobbered it. */
4949 waiting_for_user_input_p
= waiting
;
4951 #if 0 /* Call record_asynch_buffer_change unconditionally,
4952 because we might have changed minor modes or other things
4953 that affect key bindings. */
4954 if (! EQ (Fcurrent_buffer (), obuffer
)
4955 || ! EQ (current_buffer
->keymap
, okeymap
))
4957 /* But do it only if the caller is actually going to read events.
4958 Otherwise there's no need to make him wake up, and it could
4959 cause trouble (for example it would make Fsit_for return). */
4960 if (waiting_for_user_input_p
== -1)
4961 record_asynch_buffer_change ();
4964 start_vms_process_read (vs
);
4966 unbind_to (count
, Qnil
);
4970 /* If no filter, write into buffer if it isn't dead. */
4971 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
4973 Lisp_Object old_read_only
;
4974 int old_begv
, old_zv
;
4975 int old_begv_byte
, old_zv_byte
;
4976 Lisp_Object odeactivate
;
4977 int before
, before_byte
;
4982 odeactivate
= Vdeactivate_mark
;
4984 Fset_buffer (p
->buffer
);
4986 opoint_byte
= PT_BYTE
;
4987 old_read_only
= current_buffer
->read_only
;
4990 old_begv_byte
= BEGV_BYTE
;
4991 old_zv_byte
= ZV_BYTE
;
4993 current_buffer
->read_only
= Qnil
;
4995 /* Insert new output into buffer
4996 at the current end-of-output marker,
4997 thus preserving logical ordering of input and output. */
4998 if (XMARKER (p
->mark
)->buffer
)
4999 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5000 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5003 SET_PT_BOTH (ZV
, ZV_BYTE
);
5005 before_byte
= PT_BYTE
;
5007 /* If the output marker is outside of the visible region, save
5008 the restriction and widen. */
5009 if (! (BEGV
<= PT
&& PT
<= ZV
))
5012 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5014 Vlast_coding_system_used
= coding
->symbol
;
5015 /* A new coding system might be found. See the comment in the
5016 similar code in the previous `if' block. */
5017 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5019 p
->decode_coding_system
= coding
->symbol
;
5020 if (NILP (p
->encode_coding_system
)
5021 && proc_encode_coding_system
[XINT (p
->outfd
)])
5023 p
->encode_coding_system
= coding
->symbol
;
5024 setup_coding_system (coding
->symbol
,
5025 proc_encode_coding_system
[XINT (p
->outfd
)]);
5028 carryover
= nbytes
- coding
->consumed
;
5029 if (SCHARS (p
->decoding_buf
) < carryover
)
5030 p
->decoding_buf
= make_uninit_string (carryover
);
5031 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5033 XSETINT (p
->decoding_carryover
, carryover
);
5034 /* Adjust the multibyteness of TEXT to that of the buffer. */
5035 if (NILP (current_buffer
->enable_multibyte_characters
)
5036 != ! STRING_MULTIBYTE (text
))
5037 text
= (STRING_MULTIBYTE (text
)
5038 ? Fstring_as_unibyte (text
)
5039 : Fstring_to_multibyte (text
));
5040 /* Insert before markers in case we are inserting where
5041 the buffer's mark is, and the user's next command is Meta-y. */
5042 insert_from_string_before_markers (text
, 0, 0,
5043 SCHARS (text
), SBYTES (text
), 0);
5045 /* Make sure the process marker's position is valid when the
5046 process buffer is changed in the signal_after_change above.
5047 W3 is known to do that. */
5048 if (BUFFERP (p
->buffer
)
5049 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5050 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5052 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5054 update_mode_lines
++;
5056 /* Make sure opoint and the old restrictions
5057 float ahead of any new text just as point would. */
5058 if (opoint
>= before
)
5060 opoint
+= PT
- before
;
5061 opoint_byte
+= PT_BYTE
- before_byte
;
5063 if (old_begv
> before
)
5065 old_begv
+= PT
- before
;
5066 old_begv_byte
+= PT_BYTE
- before_byte
;
5068 if (old_zv
>= before
)
5070 old_zv
+= PT
- before
;
5071 old_zv_byte
+= PT_BYTE
- before_byte
;
5074 /* If the restriction isn't what it should be, set it. */
5075 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5076 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5078 /* Handling the process output should not deactivate the mark. */
5079 Vdeactivate_mark
= odeactivate
;
5081 current_buffer
->read_only
= old_read_only
;
5082 SET_PT_BOTH (opoint
, opoint_byte
);
5083 set_buffer_internal (old
);
5086 start_vms_process_read (vs
);
5091 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5093 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5094 This is intended for use by asynchronous process output filters and sentinels. */)
5097 return (waiting_for_user_input_p
? Qt
: Qnil
);
5100 /* Sending data to subprocess */
5102 jmp_buf send_process_frame
;
5103 Lisp_Object process_sent_to
;
5106 send_process_trap ()
5112 longjmp (send_process_frame
, 1);
5115 /* Send some data to process PROC.
5116 BUF is the beginning of the data; LEN is the number of characters.
5117 OBJECT is the Lisp object that the data comes from. If OBJECT is
5118 nil or t, it means that the data comes from C string.
5120 If OBJECT is not nil, the data is encoded by PROC's coding-system
5121 for encoding before it is sent.
5123 This function can evaluate Lisp code and can garbage collect. */
5126 send_process (proc
, buf
, len
, object
)
5127 volatile Lisp_Object proc
;
5128 unsigned char *volatile buf
;
5130 volatile Lisp_Object object
;
5132 /* Use volatile to protect variables from being clobbered by longjmp. */
5133 struct Lisp_Process
*p
= XPROCESS (proc
);
5135 struct coding_system
*coding
;
5136 struct gcpro gcpro1
;
5141 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5144 if (! NILP (p
->raw_status_low
))
5146 if (! EQ (p
->status
, Qrun
))
5147 error ("Process %s not running", SDATA (p
->name
));
5148 if (XINT (p
->outfd
) < 0)
5149 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5151 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5152 Vlast_coding_system_used
= coding
->symbol
;
5154 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5155 || (BUFFERP (object
)
5156 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5159 if (!EQ (coding
->symbol
, p
->encode_coding_system
))
5160 /* The coding system for encoding was changed to raw-text
5161 because we sent a unibyte text previously. Now we are
5162 sending a multibyte text, thus we must encode it by the
5163 original coding system specified for the current process. */
5164 setup_coding_system (p
->encode_coding_system
, coding
);
5165 /* src_multibyte should be set to 1 _after_ a call to
5166 setup_coding_system, since it resets src_multibyte to
5168 coding
->src_multibyte
= 1;
5172 /* For sending a unibyte text, character code conversion should
5173 not take place but EOL conversion should. So, setup raw-text
5174 or one of the subsidiary if we have not yet done it. */
5175 if (coding
->type
!= coding_type_raw_text
)
5177 if (CODING_REQUIRE_FLUSHING (coding
))
5179 /* But, before changing the coding, we must flush out data. */
5180 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5181 send_process (proc
, "", 0, Qt
);
5183 coding
->src_multibyte
= 0;
5184 setup_raw_text_coding_system (coding
);
5187 coding
->dst_multibyte
= 0;
5189 if (CODING_REQUIRE_ENCODING (coding
))
5191 int require
= encoding_buffer_size (coding
, len
);
5192 int from_byte
= -1, from
= -1, to
= -1;
5194 if (BUFFERP (object
))
5196 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5197 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5198 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5200 else if (STRINGP (object
))
5202 from_byte
= buf
- SDATA (object
);
5203 from
= string_byte_to_char (object
, from_byte
);
5204 to
= string_byte_to_char (object
, from_byte
+ len
);
5207 if (coding
->composing
!= COMPOSITION_DISABLED
)
5210 coding_save_composition (coding
, from
, to
, object
);
5212 coding
->composing
= COMPOSITION_DISABLED
;
5215 if (SBYTES (p
->encoding_buf
) < require
)
5216 p
->encoding_buf
= make_uninit_string (require
);
5219 buf
= (BUFFERP (object
)
5220 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5221 : SDATA (object
) + from_byte
);
5223 object
= p
->encoding_buf
;
5224 encode_coding (coding
, (char *) buf
, SDATA (object
),
5225 len
, SBYTES (object
));
5226 coding_free_composition_data (coding
);
5227 len
= coding
->produced
;
5228 buf
= SDATA (object
);
5232 vs
= get_vms_process_pointer (p
->pid
);
5234 error ("Could not find this process: %x", p
->pid
);
5235 else if (write_to_vms_process (vs
, buf
, len
))
5239 if (pty_max_bytes
== 0)
5241 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5242 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5243 if (pty_max_bytes
< 0)
5244 pty_max_bytes
= 250;
5246 pty_max_bytes
= 250;
5248 /* Deduct one, to leave space for the eof. */
5252 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5253 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5254 when returning with longjmp despite being declared volatile. */
5255 if (!setjmp (send_process_frame
))
5257 process_sent_to
= proc
;
5261 SIGTYPE (*old_sigpipe
)();
5263 /* Decide how much data we can send in one batch.
5264 Long lines need to be split into multiple batches. */
5265 if (!NILP (p
->pty_flag
))
5267 /* Starting this at zero is always correct when not the first
5268 iteration because the previous iteration ended by sending C-d.
5269 It may not be correct for the first iteration
5270 if a partial line was sent in a separate send_process call.
5271 If that proves worth handling, we need to save linepos
5272 in the process object. */
5274 unsigned char *ptr
= (unsigned char *) buf
;
5275 unsigned char *end
= (unsigned char *) buf
+ len
;
5277 /* Scan through this text for a line that is too long. */
5278 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5286 /* If we found one, break the line there
5287 and put in a C-d to force the buffer through. */
5291 /* Send this batch, using one or more write calls. */
5294 int outfd
= XINT (p
->outfd
);
5295 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5296 #ifdef DATAGRAM_SOCKETS
5297 if (DATAGRAM_CHAN_P (outfd
))
5299 rv
= sendto (outfd
, (char *) buf
, this,
5300 0, datagram_address
[outfd
].sa
,
5301 datagram_address
[outfd
].len
);
5302 if (rv
< 0 && errno
== EMSGSIZE
)
5303 report_file_error ("sending datagram", Fcons (proc
, Qnil
));
5308 rv
= emacs_write (outfd
, (char *) buf
, this);
5309 #ifdef ADAPTIVE_READ_BUFFERING
5310 if (XINT (p
->read_output_delay
) > 0
5311 && EQ (p
->adaptive_read_buffering
, Qt
))
5313 XSETFASTINT (p
->read_output_delay
, 0);
5314 process_output_delay_count
--;
5315 p
->read_output_skip
= Qnil
;
5319 signal (SIGPIPE
, old_sigpipe
);
5325 || errno
== EWOULDBLOCK
5331 /* Buffer is full. Wait, accepting input;
5332 that may allow the program
5333 to finish doing output and read more. */
5337 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5338 /* A gross hack to work around a bug in FreeBSD.
5339 In the following sequence, read(2) returns
5343 write(2) 954 bytes, get EAGAIN
5344 read(2) 1024 bytes in process_read_output
5345 read(2) 11 bytes in process_read_output
5347 That is, read(2) returns more bytes than have
5348 ever been written successfully. The 1033 bytes
5349 read are the 1022 bytes written successfully
5350 after processing (for example with CRs added if
5351 the terminal is set up that way which it is
5352 here). The same bytes will be seen again in a
5353 later read(2), without the CRs. */
5355 if (errno
== EAGAIN
)
5358 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5360 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5362 /* Running filters might relocate buffers or strings.
5363 Arrange to relocate BUF. */
5364 if (BUFFERP (object
))
5365 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5366 else if (STRINGP (object
))
5367 offset
= buf
- SDATA (object
);
5369 #ifdef EMACS_HAS_USECS
5370 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5372 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5375 if (BUFFERP (object
))
5376 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5377 else if (STRINGP (object
))
5378 buf
= offset
+ SDATA (object
);
5383 /* This is a real error. */
5384 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5391 /* If we sent just part of the string, put in an EOF
5392 to force it through, before we send the rest. */
5394 Fprocess_send_eof (proc
);
5397 #endif /* not VMS */
5401 proc
= process_sent_to
;
5402 p
= XPROCESS (proc
);
5404 p
->raw_status_low
= Qnil
;
5405 p
->raw_status_high
= Qnil
;
5406 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5407 XSETINT (p
->tick
, ++process_tick
);
5408 deactivate_process (proc
);
5410 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5412 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5419 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5421 doc
: /* Send current contents of region as input to PROCESS.
5422 PROCESS may be a process, a buffer, the name of a process or buffer, or
5423 nil, indicating the current buffer's process.
5424 Called from program, takes three arguments, PROCESS, START and END.
5425 If the region is more than 500 characters long,
5426 it is sent in several bunches. This may happen even for shorter regions.
5427 Output from processes can arrive in between bunches. */)
5428 (process
, start
, end
)
5429 Lisp_Object process
, start
, end
;
5434 proc
= get_process (process
);
5435 validate_region (&start
, &end
);
5437 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5438 move_gap (XINT (start
));
5440 start1
= CHAR_TO_BYTE (XINT (start
));
5441 end1
= CHAR_TO_BYTE (XINT (end
));
5442 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5443 Fcurrent_buffer ());
5448 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5450 doc
: /* Send PROCESS the contents of STRING as input.
5451 PROCESS may be a process, a buffer, the name of a process or buffer, or
5452 nil, indicating the current buffer's process.
5453 If STRING is more than 500 characters long,
5454 it is sent in several bunches. This may happen even for shorter strings.
5455 Output from processes can arrive in between bunches. */)
5457 Lisp_Object process
, string
;
5460 CHECK_STRING (string
);
5461 proc
= get_process (process
);
5462 send_process (proc
, SDATA (string
),
5463 SBYTES (string
), string
);
5467 /* Return the foreground process group for the tty/pty that
5468 the process P uses. */
5470 emacs_get_tty_pgrp (p
)
5471 struct Lisp_Process
*p
;
5476 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5479 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5480 master side. Try the slave side. */
5481 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5485 ioctl (fd
, TIOCGPGRP
, &gid
);
5489 #endif /* defined (TIOCGPGRP ) */
5494 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5495 Sprocess_running_child_p
, 0, 1, 0,
5496 doc
: /* Return t if PROCESS has given the terminal to a child.
5497 If the operating system does not make it possible to find out,
5498 return t unconditionally. */)
5500 Lisp_Object process
;
5502 /* Initialize in case ioctl doesn't exist or gives an error,
5503 in a way that will cause returning t. */
5506 struct Lisp_Process
*p
;
5508 proc
= get_process (process
);
5509 p
= XPROCESS (proc
);
5511 if (!EQ (p
->childp
, Qt
))
5512 error ("Process %s is not a subprocess",
5514 if (XINT (p
->infd
) < 0)
5515 error ("Process %s is not active",
5518 gid
= emacs_get_tty_pgrp (p
);
5520 if (gid
== XFASTINT (p
->pid
))
5525 /* send a signal number SIGNO to PROCESS.
5526 If CURRENT_GROUP is t, that means send to the process group
5527 that currently owns the terminal being used to communicate with PROCESS.
5528 This is used for various commands in shell mode.
5529 If CURRENT_GROUP is lambda, that means send to the process group
5530 that currently owns the terminal, but only if it is NOT the shell itself.
5532 If NOMSG is zero, insert signal-announcements into process's buffers
5535 If we can, we try to signal PROCESS by sending control characters
5536 down the pty. This allows us to signal inferiors who have changed
5537 their uid, for which killpg would return an EPERM error. */
5540 process_send_signal (process
, signo
, current_group
, nomsg
)
5541 Lisp_Object process
;
5543 Lisp_Object current_group
;
5547 register struct Lisp_Process
*p
;
5551 proc
= get_process (process
);
5552 p
= XPROCESS (proc
);
5554 if (!EQ (p
->childp
, Qt
))
5555 error ("Process %s is not a subprocess",
5557 if (XINT (p
->infd
) < 0)
5558 error ("Process %s is not active",
5561 if (NILP (p
->pty_flag
))
5562 current_group
= Qnil
;
5564 /* If we are using pgrps, get a pgrp number and make it negative. */
5565 if (NILP (current_group
))
5566 /* Send the signal to the shell's process group. */
5567 gid
= XFASTINT (p
->pid
);
5570 #ifdef SIGNALS_VIA_CHARACTERS
5571 /* If possible, send signals to the entire pgrp
5572 by sending an input character to it. */
5574 /* TERMIOS is the latest and bestest, and seems most likely to
5575 work. If the system has it, use it. */
5578 cc_t
*sig_char
= NULL
;
5580 tcgetattr (XINT (p
->infd
), &t
);
5585 sig_char
= &t
.c_cc
[VINTR
];
5589 sig_char
= &t
.c_cc
[VQUIT
];
5593 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5594 sig_char
= &t
.c_cc
[VSWTCH
];
5596 sig_char
= &t
.c_cc
[VSUSP
];
5601 if (sig_char
&& *sig_char
!= CDISABLE
)
5603 send_process (proc
, sig_char
, 1, Qnil
);
5606 /* If we can't send the signal with a character,
5607 fall through and send it another way. */
5608 #else /* ! HAVE_TERMIOS */
5610 /* On Berkeley descendants, the following IOCTL's retrieve the
5611 current control characters. */
5612 #if defined (TIOCGLTC) && defined (TIOCGETC)
5620 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5621 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5624 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5625 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5629 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5630 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5632 #endif /* ! defined (SIGTSTP) */
5635 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5637 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5644 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5645 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5648 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5649 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5653 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5654 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5656 #endif /* ! defined (SIGTSTP) */
5658 #else /* ! defined (TCGETA) */
5659 Your configuration files are messed up
.
5660 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5661 you'd better be using one of the alternatives above! */
5662 #endif /* ! defined (TCGETA) */
5663 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5664 /* In this case, the code above should alway returns. */
5666 #endif /* ! defined HAVE_TERMIOS */
5668 /* The code above may fall through if it can't
5669 handle the signal. */
5670 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5673 /* Get the current pgrp using the tty itself, if we have that.
5674 Otherwise, use the pty to get the pgrp.
5675 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5676 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5677 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5678 His patch indicates that if TIOCGPGRP returns an error, then
5679 we should just assume that p->pid is also the process group id. */
5681 gid
= emacs_get_tty_pgrp (p
);
5684 /* If we can't get the information, assume
5685 the shell owns the tty. */
5686 gid
= XFASTINT (p
->pid
);
5688 /* It is not clear whether anything really can set GID to -1.
5689 Perhaps on some system one of those ioctls can or could do so.
5690 Or perhaps this is vestigial. */
5693 #else /* ! defined (TIOCGPGRP ) */
5694 /* Can't select pgrps on this system, so we know that
5695 the child itself heads the pgrp. */
5696 gid
= XFASTINT (p
->pid
);
5697 #endif /* ! defined (TIOCGPGRP ) */
5699 /* If current_group is lambda, and the shell owns the terminal,
5700 don't send any signal. */
5701 if (EQ (current_group
, Qlambda
) && gid
== XFASTINT (p
->pid
))
5709 p
->raw_status_low
= Qnil
;
5710 p
->raw_status_high
= Qnil
;
5712 XSETINT (p
->tick
, ++process_tick
);
5716 #endif /* ! defined (SIGCONT) */
5719 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5724 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
5729 sys$
forcex (&(XFASTINT (p
->pid
)), 0, 1);
5732 flush_pending_output (XINT (p
->infd
));
5736 /* If we don't have process groups, send the signal to the immediate
5737 subprocess. That isn't really right, but it's better than any
5738 obvious alternative. */
5741 kill (XFASTINT (p
->pid
), signo
);
5745 /* gid may be a pid, or minus a pgrp's number */
5747 if (!NILP (current_group
))
5749 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
5750 EMACS_KILLPG (gid
, signo
);
5754 gid
= - XFASTINT (p
->pid
);
5757 #else /* ! defined (TIOCSIGSEND) */
5758 EMACS_KILLPG (gid
, signo
);
5759 #endif /* ! defined (TIOCSIGSEND) */
5762 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5763 doc
: /* Interrupt process PROCESS.
5764 PROCESS may be a process, a buffer, or the name of a process or buffer.
5765 No arg or nil means current buffer's process.
5766 Second arg CURRENT-GROUP non-nil means send signal to
5767 the current process-group of the process's controlling terminal
5768 rather than to the process's own process group.
5769 If the process is a shell, this means interrupt current subjob
5770 rather than the shell.
5772 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5773 don't send the signal. */)
5774 (process
, current_group
)
5775 Lisp_Object process
, current_group
;
5777 process_send_signal (process
, SIGINT
, current_group
, 0);
5781 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5782 doc
: /* Kill process PROCESS. May be process or name of one.
5783 See function `interrupt-process' for more details on usage. */)
5784 (process
, current_group
)
5785 Lisp_Object process
, current_group
;
5787 process_send_signal (process
, SIGKILL
, current_group
, 0);
5791 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5792 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5793 See function `interrupt-process' for more details on usage. */)
5794 (process
, current_group
)
5795 Lisp_Object process
, current_group
;
5797 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5801 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5802 doc
: /* Stop process PROCESS. May be process or name of one.
5803 See function `interrupt-process' for more details on usage.
5804 If PROCESS is a network process, inhibit handling of incoming traffic. */)
5805 (process
, current_group
)
5806 Lisp_Object process
, current_group
;
5809 if (PROCESSP (process
) && NETCONN_P (process
))
5811 struct Lisp_Process
*p
;
5813 p
= XPROCESS (process
);
5814 if (NILP (p
->command
)
5815 && XINT (p
->infd
) >= 0)
5817 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
5818 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
5825 error ("no SIGTSTP support");
5827 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5832 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5833 doc
: /* Continue process PROCESS. May be process or name of one.
5834 See function `interrupt-process' for more details on usage.
5835 If PROCESS is a network process, resume handling of incoming traffic. */)
5836 (process
, current_group
)
5837 Lisp_Object process
, current_group
;
5840 if (PROCESSP (process
) && NETCONN_P (process
))
5842 struct Lisp_Process
*p
;
5844 p
= XPROCESS (process
);
5845 if (EQ (p
->command
, Qt
)
5846 && XINT (p
->infd
) >= 0
5847 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5849 FD_SET (XINT (p
->infd
), &input_wait_mask
);
5850 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
5857 process_send_signal (process
, SIGCONT
, current_group
, 0);
5859 error ("no SIGCONT support");
5864 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5865 2, 2, "sProcess (name or number): \nnSignal code: ",
5866 doc
: /* Send PROCESS the signal with code SIGCODE.
5867 PROCESS may also be an integer specifying the process id of the
5868 process to signal; in this case, the process need not be a child of
5870 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5872 Lisp_Object process
, sigcode
;
5876 if (INTEGERP (process
))
5882 if (STRINGP (process
))
5885 if (tem
= Fget_process (process
), NILP (tem
))
5887 pid
= Fstring_to_number (process
, make_number (10));
5888 if (XINT (pid
) != 0)
5894 process
= get_process (process
);
5899 CHECK_PROCESS (process
);
5900 pid
= XPROCESS (process
)->pid
;
5901 if (!INTEGERP (pid
) || XINT (pid
) <= 0)
5902 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5906 #define handle_signal(NAME, VALUE) \
5907 else if (!strcmp (name, NAME)) \
5908 XSETINT (sigcode, VALUE)
5910 if (INTEGERP (sigcode
))
5914 unsigned char *name
;
5916 CHECK_SYMBOL (sigcode
);
5917 name
= SDATA (SYMBOL_NAME (sigcode
));
5922 handle_signal ("SIGHUP", SIGHUP
);
5925 handle_signal ("SIGINT", SIGINT
);
5928 handle_signal ("SIGQUIT", SIGQUIT
);
5931 handle_signal ("SIGILL", SIGILL
);
5934 handle_signal ("SIGABRT", SIGABRT
);
5937 handle_signal ("SIGEMT", SIGEMT
);
5940 handle_signal ("SIGKILL", SIGKILL
);
5943 handle_signal ("SIGFPE", SIGFPE
);
5946 handle_signal ("SIGBUS", SIGBUS
);
5949 handle_signal ("SIGSEGV", SIGSEGV
);
5952 handle_signal ("SIGSYS", SIGSYS
);
5955 handle_signal ("SIGPIPE", SIGPIPE
);
5958 handle_signal ("SIGALRM", SIGALRM
);
5961 handle_signal ("SIGTERM", SIGTERM
);
5964 handle_signal ("SIGURG", SIGURG
);
5967 handle_signal ("SIGSTOP", SIGSTOP
);
5970 handle_signal ("SIGTSTP", SIGTSTP
);
5973 handle_signal ("SIGCONT", SIGCONT
);
5976 handle_signal ("SIGCHLD", SIGCHLD
);
5979 handle_signal ("SIGTTIN", SIGTTIN
);
5982 handle_signal ("SIGTTOU", SIGTTOU
);
5985 handle_signal ("SIGIO", SIGIO
);
5988 handle_signal ("SIGXCPU", SIGXCPU
);
5991 handle_signal ("SIGXFSZ", SIGXFSZ
);
5994 handle_signal ("SIGVTALRM", SIGVTALRM
);
5997 handle_signal ("SIGPROF", SIGPROF
);
6000 handle_signal ("SIGWINCH", SIGWINCH
);
6003 handle_signal ("SIGINFO", SIGINFO
);
6006 handle_signal ("SIGUSR1", SIGUSR1
);
6009 handle_signal ("SIGUSR2", SIGUSR2
);
6012 error ("Undefined signal name %s", name
);
6015 #undef handle_signal
6017 return make_number (kill (XINT (pid
), XINT (sigcode
)));
6020 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6021 doc
: /* Make PROCESS see end-of-file in its input.
6022 EOF comes after any text already sent to it.
6023 PROCESS may be a process, a buffer, the name of a process or buffer, or
6024 nil, indicating the current buffer's process.
6025 If PROCESS is a network connection, or is a process communicating
6026 through a pipe (as opposed to a pty), then you cannot send any more
6027 text to PROCESS after you call this function. */)
6029 Lisp_Object process
;
6032 struct coding_system
*coding
;
6034 if (DATAGRAM_CONN_P (process
))
6037 proc
= get_process (process
);
6038 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6040 /* Make sure the process is really alive. */
6041 if (! NILP (XPROCESS (proc
)->raw_status_low
))
6042 update_status (XPROCESS (proc
));
6043 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6044 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6046 if (CODING_REQUIRE_FLUSHING (coding
))
6048 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6049 send_process (proc
, "", 0, Qnil
);
6053 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6055 if (!NILP (XPROCESS (proc
)->pty_flag
))
6056 send_process (proc
, "\004", 1, Qnil
);
6059 int old_outfd
, new_outfd
;
6061 #ifdef HAVE_SHUTDOWN
6062 /* If this is a network connection, or socketpair is used
6063 for communication with the subprocess, call shutdown to cause EOF.
6064 (In some old system, shutdown to socketpair doesn't work.
6065 Then we just can't win.) */
6066 if (NILP (XPROCESS (proc
)->pid
)
6067 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6068 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6069 /* In case of socketpair, outfd == infd, so don't close it. */
6070 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6071 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6072 #else /* not HAVE_SHUTDOWN */
6073 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6074 #endif /* not HAVE_SHUTDOWN */
6075 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6076 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6078 if (!proc_encode_coding_system
[new_outfd
])
6079 proc_encode_coding_system
[new_outfd
]
6080 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6081 bcopy (proc_encode_coding_system
[old_outfd
],
6082 proc_encode_coding_system
[new_outfd
],
6083 sizeof (struct coding_system
));
6084 bzero (proc_encode_coding_system
[old_outfd
],
6085 sizeof (struct coding_system
));
6087 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6093 /* Kill all processes associated with `buffer'.
6094 If `buffer' is nil, kill all processes */
6097 kill_buffer_processes (buffer
)
6100 Lisp_Object tail
, proc
;
6102 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6104 proc
= XCDR (XCAR (tail
));
6105 if (GC_PROCESSP (proc
)
6106 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6108 if (NETCONN_P (proc
))
6109 Fdelete_process (proc
);
6110 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6111 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6116 /* On receipt of a signal that a child status has changed, loop asking
6117 about children with changed statuses until the system says there
6120 All we do is change the status; we do not run sentinels or print
6121 notifications. That is saved for the next time keyboard input is
6122 done, in order to avoid timing errors.
6124 ** WARNING: this can be called during garbage collection.
6125 Therefore, it must not be fooled by the presence of mark bits in
6128 ** USG WARNING: Although it is not obvious from the documentation
6129 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6130 signal() before executing at least one wait(), otherwise the
6131 handler will be called again, resulting in an infinite loop. The
6132 relevant portion of the documentation reads "SIGCLD signals will be
6133 queued and the signal-catching function will be continually
6134 reentered until the queue is empty". Invoking signal() causes the
6135 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6138 ** Malloc WARNING: This should never call malloc either directly or
6139 indirectly; if it does, that is a bug */
6142 sigchld_handler (signo
)
6145 int old_errno
= errno
;
6147 register struct Lisp_Process
*p
;
6148 extern EMACS_TIME
*input_available_clear_time
;
6152 sigheld
|= sigbit (SIGCHLD
);
6164 #endif /* no WUNTRACED */
6165 /* Keep trying to get a status until we get a definitive result. */
6169 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6171 while (pid
< 0 && errno
== EINTR
);
6175 /* PID == 0 means no processes found, PID == -1 means a real
6176 failure. We have done all our job, so return. */
6178 /* USG systems forget handlers when they are used;
6179 must reestablish each time */
6180 #if defined (USG) && !defined (POSIX_SIGNALS)
6181 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6184 sigheld
&= ~sigbit (SIGCHLD
);
6192 #endif /* no WNOHANG */
6194 /* Find the process that signaled us, and record its status. */
6197 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6199 proc
= XCDR (XCAR (tail
));
6200 p
= XPROCESS (proc
);
6201 if (GC_EQ (p
->childp
, Qt
) && XINT (p
->pid
) == pid
)
6206 /* Look for an asynchronous process whose pid hasn't been filled
6209 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6211 proc
= XCDR (XCAR (tail
));
6212 p
= XPROCESS (proc
);
6213 if (GC_INTEGERP (p
->pid
) && XINT (p
->pid
) == -1)
6218 /* Change the status of the process that was found. */
6221 union { int i
; WAITTYPE wt
; } u
;
6222 int clear_desc_flag
= 0;
6224 XSETINT (p
->tick
, ++process_tick
);
6226 XSETINT (p
->raw_status_low
, u
.i
& 0xffff);
6227 XSETINT (p
->raw_status_high
, u
.i
>> 16);
6229 /* If process has terminated, stop waiting for its output. */
6230 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6231 && XINT (p
->infd
) >= 0)
6232 clear_desc_flag
= 1;
6234 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6235 if (clear_desc_flag
)
6237 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6238 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6241 /* Tell wait_reading_process_output that it needs to wake up and
6243 if (input_available_clear_time
)
6244 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6247 /* There was no asynchronous process found for that id. Check
6248 if we have a synchronous process. */
6251 synch_process_alive
= 0;
6253 /* Report the status of the synchronous process. */
6255 synch_process_retcode
= WRETCODE (w
);
6256 else if (WIFSIGNALED (w
))
6257 synch_process_termsig
= WTERMSIG (w
);
6259 /* Tell wait_reading_process_output that it needs to wake up and
6261 if (input_available_clear_time
)
6262 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6265 /* On some systems, we must return right away.
6266 If any more processes want to signal us, we will
6268 Otherwise (on systems that have WNOHANG), loop around
6269 to use up all the processes that have something to tell us. */
6270 #if (defined WINDOWSNT \
6271 || (defined USG && !defined GNU_LINUX \
6272 && !(defined HPUX && defined WNOHANG)))
6273 #if defined (USG) && ! defined (POSIX_SIGNALS)
6274 signal (signo
, sigchld_handler
);
6278 #endif /* USG, but not HPUX with WNOHANG */
6284 exec_sentinel_unwind (data
)
6287 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6292 exec_sentinel_error_handler (error
)
6295 cmd_error_internal (error
, "error in process sentinel: ");
6297 update_echo_area ();
6298 Fsleep_for (make_number (2), Qnil
);
6303 exec_sentinel (proc
, reason
)
6304 Lisp_Object proc
, reason
;
6306 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6307 register struct Lisp_Process
*p
= XPROCESS (proc
);
6308 int count
= SPECPDL_INDEX ();
6309 int outer_running_asynch_code
= running_asynch_code
;
6310 int waiting
= waiting_for_user_input_p
;
6312 /* No need to gcpro these, because all we do with them later
6313 is test them for EQness, and none of them should be a string. */
6314 odeactivate
= Vdeactivate_mark
;
6315 XSETBUFFER (obuffer
, current_buffer
);
6316 okeymap
= current_buffer
->keymap
;
6318 sentinel
= p
->sentinel
;
6319 if (NILP (sentinel
))
6322 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6323 assure that it gets restored no matter how the sentinel exits. */
6325 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6326 /* Inhibit quit so that random quits don't screw up a running filter. */
6327 specbind (Qinhibit_quit
, Qt
);
6328 specbind (Qlast_nonmenu_event
, Qt
);
6330 /* In case we get recursively called,
6331 and we already saved the match data nonrecursively,
6332 save the same match data in safely recursive fashion. */
6333 if (outer_running_asynch_code
)
6336 tem
= Fmatch_data (Qnil
, Qnil
);
6337 restore_match_data ();
6338 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
6339 Fset_match_data (tem
);
6342 /* For speed, if a search happens within this code,
6343 save the match data in a special nonrecursive fashion. */
6344 running_asynch_code
= 1;
6346 internal_condition_case_1 (read_process_output_call
,
6348 Fcons (proc
, Fcons (reason
, Qnil
))),
6349 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6350 exec_sentinel_error_handler
);
6352 /* If we saved the match data nonrecursively, restore it now. */
6353 restore_match_data ();
6354 running_asynch_code
= outer_running_asynch_code
;
6356 Vdeactivate_mark
= odeactivate
;
6358 /* Restore waiting_for_user_input_p as it was
6359 when we were called, in case the filter clobbered it. */
6360 waiting_for_user_input_p
= waiting
;
6363 if (! EQ (Fcurrent_buffer (), obuffer
)
6364 || ! EQ (current_buffer
->keymap
, okeymap
))
6366 /* But do it only if the caller is actually going to read events.
6367 Otherwise there's no need to make him wake up, and it could
6368 cause trouble (for example it would make Fsit_for return). */
6369 if (waiting_for_user_input_p
== -1)
6370 record_asynch_buffer_change ();
6372 unbind_to (count
, Qnil
);
6375 /* Report all recent events of a change in process status
6376 (either run the sentinel or output a message).
6377 This is usually done while Emacs is waiting for keyboard input
6378 but can be done at other times. */
6383 register Lisp_Object proc
, buffer
;
6384 Lisp_Object tail
, msg
;
6385 struct gcpro gcpro1
, gcpro2
;
6389 /* We need to gcpro tail; if read_process_output calls a filter
6390 which deletes a process and removes the cons to which tail points
6391 from Vprocess_alist, and then causes a GC, tail is an unprotected
6395 /* Set this now, so that if new processes are created by sentinels
6396 that we run, we get called again to handle their status changes. */
6397 update_tick
= process_tick
;
6399 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6402 register struct Lisp_Process
*p
;
6404 proc
= Fcdr (Fcar (tail
));
6405 p
= XPROCESS (proc
);
6407 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6409 XSETINT (p
->update_tick
, XINT (p
->tick
));
6411 /* If process is still active, read any output that remains. */
6412 while (! EQ (p
->filter
, Qt
)
6413 && ! EQ (p
->status
, Qconnect
)
6414 && ! EQ (p
->status
, Qlisten
)
6415 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6416 && XINT (p
->infd
) >= 0
6417 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6421 /* Get the text to use for the message. */
6422 if (!NILP (p
->raw_status_low
))
6424 msg
= status_message (p
);
6426 /* If process is terminated, deactivate it or delete it. */
6428 if (CONSP (p
->status
))
6429 symbol
= XCAR (p
->status
);
6431 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6432 || EQ (symbol
, Qclosed
))
6434 if (delete_exited_processes
)
6435 remove_process (proc
);
6437 deactivate_process (proc
);
6440 /* The actions above may have further incremented p->tick.
6441 So set p->update_tick again
6442 so that an error in the sentinel will not cause
6443 this code to be run again. */
6444 XSETINT (p
->update_tick
, XINT (p
->tick
));
6445 /* Now output the message suitably. */
6446 if (!NILP (p
->sentinel
))
6447 exec_sentinel (proc
, msg
);
6448 /* Don't bother with a message in the buffer
6449 when a process becomes runnable. */
6450 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6452 Lisp_Object ro
, tem
;
6453 struct buffer
*old
= current_buffer
;
6454 int opoint
, opoint_byte
;
6455 int before
, before_byte
;
6457 ro
= XBUFFER (buffer
)->read_only
;
6459 /* Avoid error if buffer is deleted
6460 (probably that's why the process is dead, too) */
6461 if (NILP (XBUFFER (buffer
)->name
))
6463 Fset_buffer (buffer
);
6466 opoint_byte
= PT_BYTE
;
6467 /* Insert new output into buffer
6468 at the current end-of-output marker,
6469 thus preserving logical ordering of input and output. */
6470 if (XMARKER (p
->mark
)->buffer
)
6471 Fgoto_char (p
->mark
);
6473 SET_PT_BOTH (ZV
, ZV_BYTE
);
6476 before_byte
= PT_BYTE
;
6478 tem
= current_buffer
->read_only
;
6479 current_buffer
->read_only
= Qnil
;
6480 insert_string ("\nProcess ");
6481 Finsert (1, &p
->name
);
6482 insert_string (" ");
6484 current_buffer
->read_only
= tem
;
6485 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6487 if (opoint
>= before
)
6488 SET_PT_BOTH (opoint
+ (PT
- before
),
6489 opoint_byte
+ (PT_BYTE
- before_byte
));
6491 SET_PT_BOTH (opoint
, opoint_byte
);
6493 set_buffer_internal (old
);
6498 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6499 redisplay_preserve_echo_area (13);
6505 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6506 Sset_process_coding_system
, 1, 3, 0,
6507 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6508 DECODING will be used to decode subprocess output and ENCODING to
6509 encode subprocess input. */)
6510 (process
, decoding
, encoding
)
6511 register Lisp_Object process
, decoding
, encoding
;
6513 register struct Lisp_Process
*p
;
6515 CHECK_PROCESS (process
);
6516 p
= XPROCESS (process
);
6517 if (XINT (p
->infd
) < 0)
6518 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6519 if (XINT (p
->outfd
) < 0)
6520 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6521 Fcheck_coding_system (decoding
);
6522 Fcheck_coding_system (encoding
);
6524 p
->decode_coding_system
= decoding
;
6525 p
->encode_coding_system
= encoding
;
6526 setup_process_coding_systems (process
);
6531 DEFUN ("process-coding-system",
6532 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6533 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6535 register Lisp_Object process
;
6537 CHECK_PROCESS (process
);
6538 return Fcons (XPROCESS (process
)->decode_coding_system
,
6539 XPROCESS (process
)->encode_coding_system
);
6542 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6543 Sset_process_filter_multibyte
, 2, 2, 0,
6544 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6545 If FLAG is non-nil, the filter is given multibyte strings.
6546 If FLAG is nil, the filter is given unibyte strings. In this case,
6547 all character code conversion except for end-of-line conversion is
6550 Lisp_Object process
, flag
;
6552 register struct Lisp_Process
*p
;
6554 CHECK_PROCESS (process
);
6555 p
= XPROCESS (process
);
6556 p
->filter_multibyte
= flag
;
6557 setup_process_coding_systems (process
);
6562 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6563 Sprocess_filter_multibyte_p
, 1, 1, 0,
6564 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6566 Lisp_Object process
;
6568 register struct Lisp_Process
*p
;
6570 CHECK_PROCESS (process
);
6571 p
= XPROCESS (process
);
6573 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6578 /* The first time this is called, assume keyboard input comes from DESC
6579 instead of from where we used to expect it.
6580 Subsequent calls mean assume input keyboard can come from DESC
6581 in addition to other places. */
6583 static int add_keyboard_wait_descriptor_called_flag
;
6586 add_keyboard_wait_descriptor (desc
)
6589 if (! add_keyboard_wait_descriptor_called_flag
)
6590 FD_CLR (0, &input_wait_mask
);
6591 add_keyboard_wait_descriptor_called_flag
= 1;
6592 FD_SET (desc
, &input_wait_mask
);
6593 FD_SET (desc
, &non_process_wait_mask
);
6594 if (desc
> max_keyboard_desc
)
6595 max_keyboard_desc
= desc
;
6598 /* From now on, do not expect DESC to give keyboard input. */
6601 delete_keyboard_wait_descriptor (desc
)
6605 int lim
= max_keyboard_desc
;
6607 FD_CLR (desc
, &input_wait_mask
);
6608 FD_CLR (desc
, &non_process_wait_mask
);
6610 if (desc
== max_keyboard_desc
)
6611 for (fd
= 0; fd
< lim
; fd
++)
6612 if (FD_ISSET (fd
, &input_wait_mask
)
6613 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6614 max_keyboard_desc
= fd
;
6617 /* Return nonzero if *MASK has a bit set
6618 that corresponds to one of the keyboard input descriptors. */
6621 keyboard_bit_set (mask
)
6626 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6627 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6628 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6641 if (! noninteractive
|| initialized
)
6643 signal (SIGCHLD
, sigchld_handler
);
6646 FD_ZERO (&input_wait_mask
);
6647 FD_ZERO (&non_keyboard_wait_mask
);
6648 FD_ZERO (&non_process_wait_mask
);
6649 max_process_desc
= 0;
6651 #ifdef NON_BLOCKING_CONNECT
6652 FD_ZERO (&connect_wait_mask
);
6653 num_pending_connects
= 0;
6656 #ifdef ADAPTIVE_READ_BUFFERING
6657 process_output_delay_count
= 0;
6658 process_output_skip
= 0;
6661 FD_SET (0, &input_wait_mask
);
6663 Vprocess_alist
= Qnil
;
6664 for (i
= 0; i
< MAXDESC
; i
++)
6666 chan_process
[i
] = Qnil
;
6667 proc_buffered_char
[i
] = -1;
6669 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
6670 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
6671 #ifdef DATAGRAM_SOCKETS
6672 bzero (datagram_address
, sizeof datagram_address
);
6677 Lisp_Object subfeatures
= Qnil
;
6678 struct socket_options
*sopt
;
6680 #define ADD_SUBFEATURE(key, val) \
6681 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
6683 #ifdef NON_BLOCKING_CONNECT
6684 ADD_SUBFEATURE (QCnowait
, Qt
);
6686 #ifdef DATAGRAM_SOCKETS
6687 ADD_SUBFEATURE (QCtype
, Qdatagram
);
6689 #ifdef HAVE_LOCAL_SOCKETS
6690 ADD_SUBFEATURE (QCfamily
, Qlocal
);
6692 #ifdef HAVE_GETSOCKNAME
6693 ADD_SUBFEATURE (QCservice
, Qt
);
6695 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
6696 ADD_SUBFEATURE (QCserver
, Qt
);
6699 for (sopt
= socket_options
; sopt
->name
; sopt
++)
6700 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
6702 Fprovide (intern ("make-network-process"), subfeatures
);
6704 #endif /* HAVE_SOCKETS */
6710 Qprocessp
= intern ("processp");
6711 staticpro (&Qprocessp
);
6712 Qrun
= intern ("run");
6714 Qstop
= intern ("stop");
6716 Qsignal
= intern ("signal");
6717 staticpro (&Qsignal
);
6719 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
6722 Qexit = intern ("exit");
6723 staticpro (&Qexit); */
6725 Qopen
= intern ("open");
6727 Qclosed
= intern ("closed");
6728 staticpro (&Qclosed
);
6729 Qconnect
= intern ("connect");
6730 staticpro (&Qconnect
);
6731 Qfailed
= intern ("failed");
6732 staticpro (&Qfailed
);
6733 Qlisten
= intern ("listen");
6734 staticpro (&Qlisten
);
6735 Qlocal
= intern ("local");
6736 staticpro (&Qlocal
);
6737 Qdatagram
= intern ("datagram");
6738 staticpro (&Qdatagram
);
6740 QCname
= intern (":name");
6741 staticpro (&QCname
);
6742 QCbuffer
= intern (":buffer");
6743 staticpro (&QCbuffer
);
6744 QChost
= intern (":host");
6745 staticpro (&QChost
);
6746 QCservice
= intern (":service");
6747 staticpro (&QCservice
);
6748 QCtype
= intern (":type");
6749 staticpro (&QCtype
);
6750 QClocal
= intern (":local");
6751 staticpro (&QClocal
);
6752 QCremote
= intern (":remote");
6753 staticpro (&QCremote
);
6754 QCcoding
= intern (":coding");
6755 staticpro (&QCcoding
);
6756 QCserver
= intern (":server");
6757 staticpro (&QCserver
);
6758 QCnowait
= intern (":nowait");
6759 staticpro (&QCnowait
);
6760 QCsentinel
= intern (":sentinel");
6761 staticpro (&QCsentinel
);
6762 QClog
= intern (":log");
6764 QCnoquery
= intern (":noquery");
6765 staticpro (&QCnoquery
);
6766 QCstop
= intern (":stop");
6767 staticpro (&QCstop
);
6768 QCoptions
= intern (":options");
6769 staticpro (&QCoptions
);
6770 QCplist
= intern (":plist");
6771 staticpro (&QCplist
);
6772 QCfilter_multibyte
= intern (":filter-multibyte");
6773 staticpro (&QCfilter_multibyte
);
6775 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
6776 staticpro (&Qlast_nonmenu_event
);
6778 staticpro (&Vprocess_alist
);
6780 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
6781 doc
: /* *Non-nil means delete processes immediately when they exit.
6782 nil means don't delete them until `list-processes' is run. */);
6784 delete_exited_processes
= 1;
6786 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
6787 doc
: /* Control type of device used to communicate with subprocesses.
6788 Values are nil to use a pipe, or t or `pty' to use a pty.
6789 The value has no effect if the system has no ptys or if all ptys are busy:
6790 then a pipe is used in any case.
6791 The value takes effect when `start-process' is called. */);
6792 Vprocess_connection_type
= Qt
;
6794 #ifdef ADAPTIVE_READ_BUFFERING
6795 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
6796 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
6797 On some systems, when Emacs reads the output from a subprocess, the output data
6798 is read in very small blocks, potentially resulting in very poor performance.
6799 This behaviour can be remedied to some extent by setting this variable to a
6800 non-nil value, as it will automatically delay reading from such processes, to
6801 allowing them to produce more output before Emacs tries to read it.
6802 If the value is t, the delay is reset after each write to the process; any other
6803 non-nil value means that the delay is not reset on write.
6804 The variable takes effect when `start-process' is called. */);
6805 Vprocess_adaptive_read_buffering
= Qt
;
6808 defsubr (&Sprocessp
);
6809 defsubr (&Sget_process
);
6810 defsubr (&Sget_buffer_process
);
6811 defsubr (&Sdelete_process
);
6812 defsubr (&Sprocess_status
);
6813 defsubr (&Sprocess_exit_status
);
6814 defsubr (&Sprocess_id
);
6815 defsubr (&Sprocess_name
);
6816 defsubr (&Sprocess_tty_name
);
6817 defsubr (&Sprocess_command
);
6818 defsubr (&Sset_process_buffer
);
6819 defsubr (&Sprocess_buffer
);
6820 defsubr (&Sprocess_mark
);
6821 defsubr (&Sset_process_filter
);
6822 defsubr (&Sprocess_filter
);
6823 defsubr (&Sset_process_sentinel
);
6824 defsubr (&Sprocess_sentinel
);
6825 defsubr (&Sset_process_window_size
);
6826 defsubr (&Sset_process_inherit_coding_system_flag
);
6827 defsubr (&Sprocess_inherit_coding_system_flag
);
6828 defsubr (&Sset_process_query_on_exit_flag
);
6829 defsubr (&Sprocess_query_on_exit_flag
);
6830 defsubr (&Sprocess_contact
);
6831 defsubr (&Sprocess_plist
);
6832 defsubr (&Sset_process_plist
);
6833 defsubr (&Slist_processes
);
6834 defsubr (&Sprocess_list
);
6835 defsubr (&Sstart_process
);
6837 defsubr (&Sset_network_process_option
);
6838 defsubr (&Smake_network_process
);
6839 defsubr (&Sformat_network_address
);
6840 #endif /* HAVE_SOCKETS */
6841 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
6843 defsubr (&Snetwork_interface_list
);
6845 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
6846 defsubr (&Snetwork_interface_info
);
6848 #endif /* HAVE_SOCKETS ... */
6849 #ifdef DATAGRAM_SOCKETS
6850 defsubr (&Sprocess_datagram_address
);
6851 defsubr (&Sset_process_datagram_address
);
6853 defsubr (&Saccept_process_output
);
6854 defsubr (&Sprocess_send_region
);
6855 defsubr (&Sprocess_send_string
);
6856 defsubr (&Sinterrupt_process
);
6857 defsubr (&Skill_process
);
6858 defsubr (&Squit_process
);
6859 defsubr (&Sstop_process
);
6860 defsubr (&Scontinue_process
);
6861 defsubr (&Sprocess_running_child_p
);
6862 defsubr (&Sprocess_send_eof
);
6863 defsubr (&Ssignal_process
);
6864 defsubr (&Swaiting_for_user_input_p
);
6865 /* defsubr (&Sprocess_connection); */
6866 defsubr (&Sset_process_coding_system
);
6867 defsubr (&Sprocess_coding_system
);
6868 defsubr (&Sset_process_filter_multibyte
);
6869 defsubr (&Sprocess_filter_multibyte_p
);
6873 #else /* not subprocesses */
6875 #include <sys/types.h>
6879 #include "systime.h"
6880 #include "charset.h"
6882 #include "termopts.h"
6883 #include "sysselect.h"
6885 extern int frame_garbaged
;
6887 extern EMACS_TIME
timer_check ();
6888 extern int timers_run
;
6892 /* As described above, except assuming that there are no subprocesses:
6894 Wait for timeout to elapse and/or keyboard input to be available.
6897 timeout in seconds, or
6898 zero for no limit, or
6899 -1 means gobble data immediately available but don't wait for any.
6901 read_kbd is a Lisp_Object:
6902 0 to ignore keyboard input, or
6903 1 to return when input is available, or
6904 -1 means caller will actually read the input, so don't throw to
6907 see full version for other parameters. We know that wait_proc will
6908 always be NULL, since `subprocesses' isn't defined.
6910 do_display != 0 means redisplay should be done to show subprocess
6911 output that arrives.
6913 Return true iff we received input from any process. */
6916 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
6917 wait_for_cell
, wait_proc
, just_wait_proc
)
6918 int time_limit
, microsecs
, read_kbd
, do_display
;
6919 Lisp_Object wait_for_cell
;
6920 struct Lisp_Process
*wait_proc
;
6924 EMACS_TIME end_time
, timeout
;
6925 SELECT_TYPE waitchannels
;
6928 /* What does time_limit really mean? */
6929 if (time_limit
|| microsecs
)
6931 EMACS_GET_TIME (end_time
);
6932 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6933 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6936 /* Turn off periodic alarms (in case they are in use)
6937 and then turn off any other atimers,
6938 because the select emulator uses alarms. */
6940 turn_on_atimers (0);
6944 int timeout_reduced_for_timers
= 0;
6946 /* If calling from keyboard input, do not quit
6947 since we want to return C-g as an input character.
6948 Otherwise, do pending quit if requested. */
6952 /* Exit now if the cell we're waiting for became non-nil. */
6953 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6956 /* Compute time from now till when time limit is up */
6957 /* Exit if already run out */
6958 if (time_limit
== -1)
6960 /* -1 specified for timeout means
6961 gobble output available now
6962 but don't wait at all. */
6964 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6966 else if (time_limit
|| microsecs
)
6968 EMACS_GET_TIME (timeout
);
6969 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6970 if (EMACS_TIME_NEG_P (timeout
))
6975 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6978 /* If our caller will not immediately handle keyboard events,
6979 run timer events directly.
6980 (Callers that will immediately read keyboard events
6981 call timer_delay on their own.) */
6982 if (NILP (wait_for_cell
))
6984 EMACS_TIME timer_delay
;
6988 int old_timers_run
= timers_run
;
6989 timer_delay
= timer_check (1);
6990 if (timers_run
!= old_timers_run
&& do_display
)
6991 /* We must retry, since a timer may have requeued itself
6992 and that could alter the time delay. */
6993 redisplay_preserve_echo_area (14);
6997 while (!detect_input_pending ());
6999 /* If there is unread keyboard input, also return. */
7001 && requeued_events_pending_p ())
7004 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7006 EMACS_TIME difference
;
7007 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7008 if (EMACS_TIME_NEG_P (difference
))
7010 timeout
= timer_delay
;
7011 timeout_reduced_for_timers
= 1;
7016 /* Cause C-g and alarm signals to take immediate action,
7017 and cause input available signals to zero out timeout. */
7019 set_waiting_for_input (&timeout
);
7021 /* Wait till there is something to do. */
7023 if (! read_kbd
&& NILP (wait_for_cell
))
7024 FD_ZERO (&waitchannels
);
7026 FD_SET (0, &waitchannels
);
7028 /* If a frame has been newly mapped and needs updating,
7029 reprocess its display stuff. */
7030 if (frame_garbaged
&& do_display
)
7032 clear_waiting_for_input ();
7033 redisplay_preserve_echo_area (15);
7035 set_waiting_for_input (&timeout
);
7038 if (read_kbd
&& detect_input_pending ())
7041 FD_ZERO (&waitchannels
);
7044 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7049 /* Make C-g and alarm signals set flags again */
7050 clear_waiting_for_input ();
7052 /* If we woke up due to SIGWINCH, actually change size now. */
7053 do_pending_window_change (0);
7055 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7056 /* We waited the full specified time, so return now. */
7061 /* If the system call was interrupted, then go around the
7063 if (xerrno
== EINTR
)
7064 FD_ZERO (&waitchannels
);
7066 error ("select error: %s", emacs_strerror (xerrno
));
7069 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7070 /* System sometimes fails to deliver SIGIO. */
7071 kill (getpid (), SIGIO
);
7074 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7075 kill (getpid (), SIGIO
);
7078 /* Check for keyboard input */
7081 && detect_input_pending_run_timers (do_display
))
7083 swallow_events (do_display
);
7084 if (detect_input_pending_run_timers (do_display
))
7088 /* If there is unread keyboard input, also return. */
7090 && requeued_events_pending_p ())
7093 /* If wait_for_cell. check for keyboard input
7094 but don't run any timers.
7095 ??? (It seems wrong to me to check for keyboard
7096 input at all when wait_for_cell, but the code
7097 has been this way since July 1994.
7098 Try changing this after version 19.31.) */
7099 if (! NILP (wait_for_cell
)
7100 && detect_input_pending ())
7102 swallow_events (do_display
);
7103 if (detect_input_pending ())
7107 /* Exit now if the cell we're waiting for became non-nil. */
7108 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7118 /* Don't confuse make-docfile by having two doc strings for this function.
7119 make-docfile does not pay attention to #if, for good reason! */
7120 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7123 register Lisp_Object name
;
7128 /* Don't confuse make-docfile by having two doc strings for this function.
7129 make-docfile does not pay attention to #if, for good reason! */
7130 DEFUN ("process-inherit-coding-system-flag",
7131 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7135 register Lisp_Object process
;
7137 /* Ignore the argument and return the value of
7138 inherit-process-coding-system. */
7139 return inherit_process_coding_system
? Qt
: Qnil
;
7142 /* Kill all processes associated with `buffer'.
7143 If `buffer' is nil, kill all processes.
7144 Since we have no subprocesses, this does nothing. */
7147 kill_buffer_processes (buffer
)
7160 QCtype
= intern (":type");
7161 staticpro (&QCtype
);
7163 defsubr (&Sget_buffer_process
);
7164 defsubr (&Sprocess_inherit_coding_system_flag
);
7168 #endif /* not subprocesses */
7170 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7171 (do not change this comment) */