1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
27 /* This file is split into two parts by the following preprocessor
28 conditional. The 'then' clause contains all of the support for
29 asynchronous subprocesses. The 'else' clause contains stub
30 versions of some of the asynchronous subprocess routines that are
31 often called elsewhere in Emacs, so we don't have to #ifdef the
32 sections that call them. */
40 #include <sys/types.h> /* some typedefs are used in sys/file.h */
43 #ifdef HAVE_INTTYPES_H
50 #if defined(WINDOWSNT) || defined(UNIX98_PTYS)
53 #endif /* not WINDOWSNT */
55 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
56 #include <sys/socket.h>
58 #include <netinet/in.h>
59 #include <arpa/inet.h>
60 #ifdef NEED_NET_ERRNO_H
61 #include <net/errno.h>
62 #endif /* NEED_NET_ERRNO_H */
64 /* Are local (unix) sockets supported? */
65 #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM)
66 #if !defined (AF_LOCAL) && defined (AF_UNIX)
67 #define AF_LOCAL AF_UNIX
70 #define HAVE_LOCAL_SOCKETS
74 #endif /* HAVE_SOCKETS */
76 /* TERM is a poor-man's SLIP, used on GNU/Linux. */
81 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
82 #ifdef HAVE_BROKEN_INET_ADDR
83 #define IN_ADDR struct in_addr
84 #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
86 #define IN_ADDR unsigned long
87 #define NUMERIC_ADDR_ERROR (numeric_addr == -1)
90 #if defined(BSD_SYSTEM) || defined(STRIDE)
91 #include <sys/ioctl.h>
92 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
94 #endif /* HAVE_PTYS and no O_NDELAY */
95 #endif /* BSD_SYSTEM || STRIDE */
97 #ifdef BROKEN_O_NONBLOCK
99 #endif /* BROKEN_O_NONBLOCK */
105 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
107 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
108 /* sys/ioctl.h may have been included already */
110 #include <sys/ioctl.h>
117 #include <sys/sysmacros.h> /* for "minor" */
118 #endif /* not IRIS */
121 #include <sys/wait.h>
125 #include <netinet/in.h>
126 #include <arpa/nameser.h>
136 #include "character.h"
140 #include "termhooks.h"
141 #include "termopts.h"
142 #include "commands.h"
143 #include "keyboard.h"
144 #include "blockinput.h"
145 #include "dispextern.h"
146 #include "composite.h"
149 Lisp_Object Qprocessp
;
150 Lisp_Object Qrun
, Qstop
, Qsignal
;
151 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
152 Lisp_Object Qlocal
, Qipv4
, Qdatagram
;
156 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
157 Lisp_Object QClocal
, QCremote
, QCcoding
;
158 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
159 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
160 Lisp_Object QCfilter_multibyte
;
161 Lisp_Object Qlast_nonmenu_event
;
162 /* QCfamily is declared and initialized in xfaces.c,
163 QCfilter in keyboard.c. */
164 extern Lisp_Object QCfamily
, QCfilter
;
166 /* Qexit is declared and initialized in eval.c. */
168 /* QCfamily is defined in xfaces.c. */
169 extern Lisp_Object QCfamily
;
170 /* QCfilter is defined in keyboard.c. */
171 extern Lisp_Object QCfilter
;
173 /* a process object is a network connection when its childp field is neither
174 Qt nor Qnil but is instead a property list (KEY VAL ...). */
177 #define NETCONN_P(p) (CONSP (XPROCESS (p)->childp))
178 #define NETCONN1_P(p) (CONSP ((p)->childp))
180 #define NETCONN_P(p) 0
181 #define NETCONN1_P(p) 0
182 #endif /* HAVE_SOCKETS */
184 /* Define first descriptor number available for subprocesses. */
186 #define FIRST_PROC_DESC 1
188 #define FIRST_PROC_DESC 3
191 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
194 #if !defined (SIGCHLD) && defined (SIGCLD)
195 #define SIGCHLD SIGCLD
198 #include "syssignal.h"
202 extern char *get_operating_system_release ();
208 extern char *sys_errlist
[];
215 /* t means use pty, nil means use a pipe,
216 maybe other values to come. */
217 static Lisp_Object Vprocess_connection_type
;
221 #include <sys/socket.h>
225 /* These next two vars are non-static since sysdep.c uses them in the
226 emulation of `select'. */
227 /* Number of events of change of status of a process. */
229 /* Number of events for which the user or sentinel has been notified. */
232 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
234 #ifdef BROKEN_NON_BLOCKING_CONNECT
235 #undef NON_BLOCKING_CONNECT
237 #ifndef NON_BLOCKING_CONNECT
240 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
241 #if defined (O_NONBLOCK) || defined (O_NDELAY)
242 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
243 #define NON_BLOCKING_CONNECT
244 #endif /* EWOULDBLOCK || EINPROGRESS */
245 #endif /* O_NONBLOCK || O_NDELAY */
246 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
247 #endif /* HAVE_SELECT */
248 #endif /* HAVE_SOCKETS */
249 #endif /* NON_BLOCKING_CONNECT */
250 #endif /* BROKEN_NON_BLOCKING_CONNECT */
252 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
253 this system. We need to read full packets, so we need a
254 "non-destructive" select. So we require either native select,
255 or emulation of select using FIONREAD. */
257 #ifdef BROKEN_DATAGRAM_SOCKETS
258 #undef DATAGRAM_SOCKETS
260 #ifndef DATAGRAM_SOCKETS
262 #if defined (HAVE_SELECT) || defined (FIONREAD)
263 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
264 #define DATAGRAM_SOCKETS
265 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
266 #endif /* HAVE_SELECT || FIONREAD */
267 #endif /* HAVE_SOCKETS */
268 #endif /* DATAGRAM_SOCKETS */
269 #endif /* BROKEN_DATAGRAM_SOCKETS */
272 #undef NON_BLOCKING_CONNECT
273 #undef DATAGRAM_SOCKETS
276 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
277 #ifdef EMACS_HAS_USECS
278 #define ADAPTIVE_READ_BUFFERING
282 #ifdef ADAPTIVE_READ_BUFFERING
283 #define READ_OUTPUT_DELAY_INCREMENT 10000
284 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
285 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
287 /* Number of processes which have a non-zero read_output_delay,
288 and therefore might be delayed for adaptive read buffering. */
290 static int process_output_delay_count
;
292 /* Non-zero if any process has non-nil read_output_skip. */
294 static int process_output_skip
;
296 /* Non-nil means to delay reading process output to improve buffering.
297 A value of t means that delay is reset after each send, any other
298 non-nil value does not reset the delay. A value of nil disables
299 adaptive read buffering completely. */
300 static Lisp_Object Vprocess_adaptive_read_buffering
;
302 #define process_output_delay_count 0
306 #include "sysselect.h"
308 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
309 static void deactivate_process
P_ ((Lisp_Object
));
310 static void status_notify
P_ ((struct Lisp_Process
*));
311 static int read_process_output
P_ ((Lisp_Object
, int));
313 /* If we support a window system, turn on the code to poll periodically
314 to detect C-g. It isn't actually used when doing interrupt input. */
315 #ifdef HAVE_WINDOW_SYSTEM
316 #define POLL_FOR_INPUT
319 static Lisp_Object
get_process ();
320 static void exec_sentinel ();
322 extern EMACS_TIME
timer_check ();
323 extern int timers_run
;
325 /* Mask of bits indicating the descriptors that we wait for input on. */
327 static SELECT_TYPE input_wait_mask
;
329 /* Mask that excludes keyboard input descriptor(s). */
331 static SELECT_TYPE non_keyboard_wait_mask
;
333 /* Mask that excludes process input descriptor(s). */
335 static SELECT_TYPE non_process_wait_mask
;
337 /* Mask for the gpm mouse input descriptor. */
339 static SELECT_TYPE gpm_wait_mask
;
341 #ifdef NON_BLOCKING_CONNECT
342 /* Mask of bits indicating the descriptors that we wait for connect to
343 complete on. Once they complete, they are removed from this mask
344 and added to the input_wait_mask and non_keyboard_wait_mask. */
346 static SELECT_TYPE connect_wait_mask
;
348 /* Number of bits set in connect_wait_mask. */
349 static int num_pending_connects
;
351 #define IF_NON_BLOCKING_CONNECT(s) s
353 #define IF_NON_BLOCKING_CONNECT(s)
356 /* The largest descriptor currently in use for a process object. */
357 static int max_process_desc
;
359 /* The largest descriptor currently in use for keyboard input. */
360 static int max_keyboard_desc
;
362 /* The largest descriptor currently in use for gpm mouse input. */
363 static int max_gpm_desc
;
365 /* Nonzero means delete a process right away if it exits. */
366 static int delete_exited_processes
;
368 /* Indexed by descriptor, gives the process (if any) for that descriptor */
369 Lisp_Object chan_process
[MAXDESC
];
371 /* Alist of elements (NAME . PROCESS) */
372 Lisp_Object Vprocess_alist
;
374 /* Buffered-ahead input char from process, indexed by channel.
375 -1 means empty (no char is buffered).
376 Used on sys V where the only way to tell if there is any
377 output from the process is to read at least one char.
378 Always -1 on systems that support FIONREAD. */
380 /* Don't make static; need to access externally. */
381 int proc_buffered_char
[MAXDESC
];
383 /* Table of `struct coding-system' for each process. */
384 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
385 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
387 #ifdef DATAGRAM_SOCKETS
388 /* Table of `partner address' for datagram sockets. */
389 struct sockaddr_and_len
{
392 } datagram_address
[MAXDESC
];
393 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
394 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
396 #define DATAGRAM_CHAN_P(chan) (0)
397 #define DATAGRAM_CONN_P(proc) (0)
400 /* Maximum number of bytes to send to a pty without an eof. */
401 static int pty_max_bytes
;
403 /* Nonzero means don't run process sentinels. This is used
405 int inhibit_sentinels
;
411 /* The file name of the pty opened by allocate_pty. */
413 static char pty_name
[24];
416 /* Compute the Lisp form of the process status, p->status, from
417 the numeric status that was returned by `wait'. */
419 static Lisp_Object
status_convert ();
423 struct Lisp_Process
*p
;
425 union { int i
; WAITTYPE wt
; } u
;
426 eassert (p
->raw_status_new
);
428 p
->status
= status_convert (u
.wt
);
429 p
->raw_status_new
= 0;
432 /* Convert a process status word in Unix format to
433 the list that we use internally. */
440 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
441 else if (WIFEXITED (w
))
442 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
443 WCOREDUMP (w
) ? Qt
: Qnil
));
444 else if (WIFSIGNALED (w
))
445 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
446 WCOREDUMP (w
) ? Qt
: Qnil
));
451 /* Given a status-list, extract the three pieces of information
452 and store them individually through the three pointers. */
455 decode_status (l
, symbol
, code
, coredump
)
473 *code
= XFASTINT (XCAR (tem
));
475 *coredump
= !NILP (tem
);
479 /* Return a string describing a process status list. */
483 struct Lisp_Process
*p
;
485 Lisp_Object status
= p
->status
;
488 Lisp_Object string
, string2
;
490 decode_status (status
, &symbol
, &code
, &coredump
);
492 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
495 synchronize_system_messages_locale ();
496 signame
= strsignal (code
);
499 string
= build_string (signame
);
500 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
501 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
502 return concat2 (string
, string2
);
504 else if (EQ (symbol
, Qexit
))
507 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
509 return build_string ("finished\n");
510 string
= Fnumber_to_string (make_number (code
));
511 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
512 return concat3 (build_string ("exited abnormally with code "),
515 else if (EQ (symbol
, Qfailed
))
517 string
= Fnumber_to_string (make_number (code
));
518 string2
= build_string ("\n");
519 return concat3 (build_string ("failed with code "),
523 return Fcopy_sequence (Fsymbol_name (symbol
));
528 /* Open an available pty, returning a file descriptor.
529 Return -1 on failure.
530 The file name of the terminal corresponding to the pty
531 is left in the variable pty_name. */
542 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
543 for (i
= 0; i
< 16; i
++)
546 struct stat stb
; /* Used in some PTY_OPEN. */
547 #ifdef PTY_NAME_SPRINTF
550 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
551 #endif /* no PTY_NAME_SPRINTF */
555 #else /* no PTY_OPEN */
558 /* Unusual IRIS code */
559 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
562 if (fstat (fd
, &stb
) < 0)
564 # else /* not IRIS */
565 { /* Some systems name their pseudoterminals so that there are gaps in
566 the usual sequence - for example, on HP9000/S700 systems, there
567 are no pseudoterminals with names ending in 'f'. So we wait for
568 three failures in a row before deciding that we've reached the
570 int failed_count
= 0;
572 if (stat (pty_name
, &stb
) < 0)
575 if (failed_count
>= 3)
582 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
584 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
586 # endif /* not IRIS */
588 #endif /* no PTY_OPEN */
592 /* check to make certain that both sides are available
593 this avoids a nasty yet stupid bug in rlogins */
594 #ifdef PTY_TTY_NAME_SPRINTF
597 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
598 #endif /* no PTY_TTY_NAME_SPRINTF */
600 if (access (pty_name
, 6) != 0)
603 # if !defined(IRIS) && !defined(__sgi)
609 #endif /* not UNIPLUS */
616 #endif /* HAVE_PTYS */
622 register Lisp_Object val
, tem
, name1
;
623 register struct Lisp_Process
*p
;
627 p
= allocate_process ();
634 p
->raw_status_new
= 0;
636 p
->mark
= Fmake_marker ();
638 #ifdef ADAPTIVE_READ_BUFFERING
639 p
->adaptive_read_buffering
= 0;
640 p
->read_output_delay
= 0;
641 p
->read_output_skip
= 0;
644 /* If name is already in use, modify it until it is unused. */
649 tem
= Fget_process (name1
);
650 if (NILP (tem
)) break;
651 sprintf (suffix
, "<%d>", i
);
652 name1
= concat2 (name
, build_string (suffix
));
656 XSETPROCESS (val
, p
);
657 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
662 remove_process (proc
)
663 register Lisp_Object proc
;
665 register Lisp_Object pair
;
667 pair
= Frassq (proc
, Vprocess_alist
);
668 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
670 deactivate_process (proc
);
673 /* Setup coding systems of PROCESS. */
676 setup_process_coding_systems (process
)
679 struct Lisp_Process
*p
= XPROCESS (process
);
681 int outch
= p
->outfd
;
682 Lisp_Object coding_system
;
684 if (inch
< 0 || outch
< 0)
687 if (!proc_decode_coding_system
[inch
])
688 proc_decode_coding_system
[inch
]
689 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
690 coding_system
= p
->decode_coding_system
;
691 if (! NILP (p
->filter
))
693 if (!p
->filter_multibyte
)
694 coding_system
= raw_text_coding_system (coding_system
);
696 else if (BUFFERP (p
->buffer
))
698 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
699 coding_system
= raw_text_coding_system (coding_system
);
701 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
703 if (!proc_encode_coding_system
[outch
])
704 proc_encode_coding_system
[outch
]
705 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
706 setup_coding_system (p
->encode_coding_system
,
707 proc_encode_coding_system
[outch
]);
710 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
711 doc
: /* Return t if OBJECT is a process. */)
715 return PROCESSP (object
) ? Qt
: Qnil
;
718 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
719 doc
: /* Return the process named NAME, or nil if there is none. */)
721 register Lisp_Object name
;
726 return Fcdr (Fassoc (name
, Vprocess_alist
));
729 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
730 doc
: /* Return the (or a) process associated with BUFFER.
731 BUFFER may be a buffer or the name of one. */)
733 register Lisp_Object buffer
;
735 register Lisp_Object buf
, tail
, proc
;
737 if (NILP (buffer
)) return Qnil
;
738 buf
= Fget_buffer (buffer
);
739 if (NILP (buf
)) return Qnil
;
741 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
743 proc
= Fcdr (XCAR (tail
));
744 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
750 /* This is how commands for the user decode process arguments. It
751 accepts a process, a process name, a buffer, a buffer name, or nil.
752 Buffers denote the first process in the buffer, and nil denotes the
757 register Lisp_Object name
;
759 register Lisp_Object proc
, obj
;
762 obj
= Fget_process (name
);
764 obj
= Fget_buffer (name
);
766 error ("Process %s does not exist", SDATA (name
));
768 else if (NILP (name
))
769 obj
= Fcurrent_buffer ();
773 /* Now obj should be either a buffer object or a process object.
777 proc
= Fget_buffer_process (obj
);
779 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
791 /* Fdelete_process promises to immediately forget about the process, but in
792 reality, Emacs needs to remember those processes until they have been
793 treated by sigchld_handler; otherwise this handler would consider the
794 process as being synchronous and say that the synchronous process is
796 static Lisp_Object deleted_pid_list
;
799 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
800 doc
: /* Delete PROCESS: kill it and forget about it immediately.
801 PROCESS may be a process, a buffer, the name of a process or buffer, or
802 nil, indicating the current buffer's process. */)
804 register Lisp_Object process
;
806 register struct Lisp_Process
*p
;
808 process
= get_process (process
);
809 p
= XPROCESS (process
);
811 p
->raw_status_new
= 0;
814 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
815 p
->tick
= ++process_tick
;
818 else if (p
->infd
>= 0)
822 /* Assignment to EMACS_INT stops GCC whining about limited range
824 EMACS_INT pid
= p
->pid
;
826 /* No problem storing the pid here, as it is still in Vprocess_alist. */
827 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
828 /* GC treated elements set to nil. */
829 Fdelq (Qnil
, deleted_pid_list
));
830 /* If the process has already signaled, remove it from the list. */
831 if (p
->raw_status_new
)
834 if (CONSP (p
->status
))
835 symbol
= XCAR (p
->status
);
836 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
838 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
842 Fkill_process (process
, Qnil
);
843 /* Do this now, since remove_process will make sigchld_handler do nothing. */
845 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
846 p
->tick
= ++process_tick
;
850 remove_process (process
);
854 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
855 doc
: /* Return the status of PROCESS.
856 The returned value is one of the following symbols:
857 run -- for a process that is running.
858 stop -- for a process stopped but continuable.
859 exit -- for a process that has exited.
860 signal -- for a process that has got a fatal signal.
861 open -- for a network stream connection that is open.
862 listen -- for a network stream server that is listening.
863 closed -- for a network stream connection that is closed.
864 connect -- when waiting for a non-blocking connection to complete.
865 failed -- when a non-blocking connection has failed.
866 nil -- if arg is a process name and no such process exists.
867 PROCESS may be a process, a buffer, the name of a process, or
868 nil, indicating the current buffer's process. */)
870 register Lisp_Object process
;
872 register struct Lisp_Process
*p
;
873 register Lisp_Object status
;
875 if (STRINGP (process
))
876 process
= Fget_process (process
);
878 process
= get_process (process
);
883 p
= XPROCESS (process
);
884 if (p
->raw_status_new
)
888 status
= XCAR (status
);
891 if (EQ (status
, Qexit
))
893 else if (EQ (p
->command
, Qt
))
895 else if (EQ (status
, Qrun
))
901 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
903 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
904 If PROCESS has not yet exited or died, return 0. */)
906 register Lisp_Object process
;
908 CHECK_PROCESS (process
);
909 if (XPROCESS (process
)->raw_status_new
)
910 update_status (XPROCESS (process
));
911 if (CONSP (XPROCESS (process
)->status
))
912 return XCAR (XCDR (XPROCESS (process
)->status
));
913 return make_number (0);
916 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
917 doc
: /* Return the process id of PROCESS.
918 This is the pid of the external process which PROCESS uses or talks to.
919 For a network connection, this value is nil. */)
921 register Lisp_Object process
;
923 /* Assignment to EMACS_INT stops GCC whining about limited range of
927 CHECK_PROCESS (process
);
928 pid
= XPROCESS (process
)->pid
;
929 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
932 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
933 doc
: /* Return the name of PROCESS, as a string.
934 This is the name of the program invoked in PROCESS,
935 possibly modified to make it unique among process names. */)
937 register Lisp_Object process
;
939 CHECK_PROCESS (process
);
940 return XPROCESS (process
)->name
;
943 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
944 doc
: /* Return the command that was executed to start PROCESS.
945 This is a list of strings, the first string being the program executed
946 and the rest of the strings being the arguments given to it.
947 For a non-child channel, this is nil. */)
949 register Lisp_Object process
;
951 CHECK_PROCESS (process
);
952 return XPROCESS (process
)->command
;
955 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
956 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
957 This is the terminal that the process itself reads and writes on,
958 not the name of the pty that Emacs uses to talk with that terminal. */)
960 register Lisp_Object process
;
962 CHECK_PROCESS (process
);
963 return XPROCESS (process
)->tty_name
;
966 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
968 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
970 register Lisp_Object process
, buffer
;
972 struct Lisp_Process
*p
;
974 CHECK_PROCESS (process
);
976 CHECK_BUFFER (buffer
);
977 p
= XPROCESS (process
);
980 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
981 setup_process_coding_systems (process
);
985 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
987 doc
: /* Return the buffer PROCESS is associated with.
988 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
990 register Lisp_Object process
;
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->buffer
;
996 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
998 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1000 register Lisp_Object process
;
1002 CHECK_PROCESS (process
);
1003 return XPROCESS (process
)->mark
;
1006 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1008 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1009 A value of t means stop accepting output from the process.
1011 When a process has a filter, its buffer is not used for output.
1012 Instead, each time it does output, the entire string of output is
1013 passed to the filter.
1015 The filter gets two arguments: the process and the string of output.
1016 The string argument is normally a multibyte string, except:
1017 - if the process' input coding system is no-conversion or raw-text,
1018 it is a unibyte string (the non-converted input), or else
1019 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1020 string (the result of converting the decoded input multibyte
1021 string to unibyte with `string-make-unibyte'). */)
1023 register Lisp_Object process
, filter
;
1025 struct Lisp_Process
*p
;
1027 CHECK_PROCESS (process
);
1028 p
= XPROCESS (process
);
1030 /* Don't signal an error if the process' input file descriptor
1031 is closed. This could make debugging Lisp more difficult,
1032 for example when doing something like
1034 (setq process (start-process ...))
1036 (set-process-filter process ...) */
1040 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1042 FD_CLR (p
->infd
, &input_wait_mask
);
1043 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1045 else if (EQ (p
->filter
, Qt
)
1046 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1048 FD_SET (p
->infd
, &input_wait_mask
);
1049 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1055 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1056 setup_process_coding_systems (process
);
1060 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1062 doc
: /* Returns the filter function of PROCESS; nil if none.
1063 See `set-process-filter' for more info on filter functions. */)
1065 register Lisp_Object process
;
1067 CHECK_PROCESS (process
);
1068 return XPROCESS (process
)->filter
;
1071 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1073 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1074 The sentinel is called as a function when the process changes state.
1075 It gets two arguments: the process, and a string describing the change. */)
1077 register Lisp_Object process
, sentinel
;
1079 struct Lisp_Process
*p
;
1081 CHECK_PROCESS (process
);
1082 p
= XPROCESS (process
);
1084 p
->sentinel
= sentinel
;
1086 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1090 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1092 doc
: /* Return the sentinel of PROCESS; nil if none.
1093 See `set-process-sentinel' for more info on sentinels. */)
1095 register Lisp_Object process
;
1097 CHECK_PROCESS (process
);
1098 return XPROCESS (process
)->sentinel
;
1101 DEFUN ("set-process-window-size", Fset_process_window_size
,
1102 Sset_process_window_size
, 3, 3, 0,
1103 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1104 (process
, height
, width
)
1105 register Lisp_Object process
, height
, width
;
1107 CHECK_PROCESS (process
);
1108 CHECK_NATNUM (height
);
1109 CHECK_NATNUM (width
);
1111 if (XPROCESS (process
)->infd
< 0
1112 || set_window_size (XPROCESS (process
)->infd
,
1113 XINT (height
), XINT (width
)) <= 0)
1119 DEFUN ("set-process-inherit-coding-system-flag",
1120 Fset_process_inherit_coding_system_flag
,
1121 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1122 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1123 If the second argument FLAG is non-nil, then the variable
1124 `buffer-file-coding-system' of the buffer associated with PROCESS
1125 will be bound to the value of the coding system used to decode
1128 This is useful when the coding system specified for the process buffer
1129 leaves either the character code conversion or the end-of-line conversion
1130 unspecified, or if the coding system used to decode the process output
1131 is more appropriate for saving the process buffer.
1133 Binding the variable `inherit-process-coding-system' to non-nil before
1134 starting the process is an alternative way of setting the inherit flag
1135 for the process which will run. */)
1137 register Lisp_Object process
, flag
;
1139 CHECK_PROCESS (process
);
1140 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1144 DEFUN ("process-inherit-coding-system-flag",
1145 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1147 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1148 If this flag is t, `buffer-file-coding-system' of the buffer
1149 associated with PROCESS will inherit the coding system used to decode
1150 the process output. */)
1152 register Lisp_Object process
;
1154 CHECK_PROCESS (process
);
1155 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1158 DEFUN ("set-process-query-on-exit-flag",
1159 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1161 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1162 If the second argument FLAG is non-nil, Emacs will query the user before
1163 exiting if PROCESS is running. */)
1165 register Lisp_Object process
, flag
;
1167 CHECK_PROCESS (process
);
1168 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1172 DEFUN ("process-query-on-exit-flag",
1173 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1175 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1177 register Lisp_Object process
;
1179 CHECK_PROCESS (process
);
1180 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1183 #ifdef DATAGRAM_SOCKETS
1184 Lisp_Object
Fprocess_datagram_address ();
1187 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1189 doc
: /* Return the contact info of PROCESS; t for a real child.
1190 For a net connection, the value depends on the optional KEY arg.
1191 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1192 if KEY is t, the complete contact information for the connection is
1193 returned, else the specific value for the keyword KEY is returned.
1194 See `make-network-process' for a list of keywords. */)
1196 register Lisp_Object process
, key
;
1198 Lisp_Object contact
;
1200 CHECK_PROCESS (process
);
1201 contact
= XPROCESS (process
)->childp
;
1203 #ifdef DATAGRAM_SOCKETS
1204 if (DATAGRAM_CONN_P (process
)
1205 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1206 contact
= Fplist_put (contact
, QCremote
,
1207 Fprocess_datagram_address (process
));
1210 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1213 return Fcons (Fplist_get (contact
, QChost
),
1214 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1215 return Fplist_get (contact
, key
);
1218 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1220 doc
: /* Return the plist of PROCESS. */)
1222 register Lisp_Object process
;
1224 CHECK_PROCESS (process
);
1225 return XPROCESS (process
)->plist
;
1228 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1230 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1232 register Lisp_Object process
, plist
;
1234 CHECK_PROCESS (process
);
1237 XPROCESS (process
)->plist
= plist
;
1241 #if 0 /* Turned off because we don't currently record this info
1242 in the process. Perhaps add it. */
1243 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1244 doc
: /* Return the connection type of PROCESS.
1245 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1246 a socket connection. */)
1248 Lisp_Object process
;
1250 return XPROCESS (process
)->type
;
1255 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1257 doc
: /* Convert network ADDRESS from internal format to a string.
1258 A 4 or 5 element vector represents an IPv4 address (with port number).
1259 An 8 or 9 element vector represents an IPv6 address (with port number).
1260 If optional second argument OMIT-PORT is non-nil, don't include a port
1261 number in the string, even when present in ADDRESS.
1262 Returns nil if format of ADDRESS is invalid. */)
1263 (address
, omit_port
)
1264 Lisp_Object address
, omit_port
;
1269 if (STRINGP (address
)) /* AF_LOCAL */
1272 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1274 register struct Lisp_Vector
*p
= XVECTOR (address
);
1275 Lisp_Object args
[10];
1278 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1280 args
[0] = build_string ("%d.%d.%d.%d");
1283 else if (p
->size
== 5)
1285 args
[0] = build_string ("%d.%d.%d.%d:%d");
1288 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1290 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1293 else if (p
->size
== 9)
1295 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1301 for (i
= 0; i
< nargs
; i
++)
1303 EMACS_INT element
= XINT (p
->contents
[i
]);
1305 if (element
< 0 || element
> 65535)
1308 if (nargs
<= 5 /* IPv4 */
1309 && i
< 4 /* host, not port */
1313 args
[i
+1] = p
->contents
[i
];
1316 return Fformat (nargs
+1, args
);
1319 if (CONSP (address
))
1321 Lisp_Object args
[2];
1322 args
[0] = build_string ("<Family %d>");
1323 args
[1] = Fcar (address
);
1324 return Fformat (2, args
);
1332 list_processes_1 (query_only
)
1333 Lisp_Object query_only
;
1335 register Lisp_Object tail
, tem
;
1336 Lisp_Object proc
, minspace
, tem1
;
1337 register struct Lisp_Process
*p
;
1339 int w_proc
, w_buffer
, w_tty
;
1341 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1343 w_proc
= 4; /* Proc */
1344 w_buffer
= 6; /* Buffer */
1345 w_tty
= 0; /* Omit if no ttys */
1347 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1351 proc
= Fcdr (XCAR (tail
));
1352 p
= XPROCESS (proc
);
1353 if (NILP (p
->childp
))
1355 if (!NILP (query_only
) && p
->kill_without_query
)
1357 if (STRINGP (p
->name
)
1358 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1360 if (!NILP (p
->buffer
))
1362 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1363 w_buffer
= 8; /* (Killed) */
1364 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1367 if (STRINGP (p
->tty_name
)
1368 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1372 XSETFASTINT (i_status
, w_proc
+ 1);
1373 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1376 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1377 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1380 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1383 XSETFASTINT (minspace
, 1);
1385 set_buffer_internal (XBUFFER (Vstandard_output
));
1386 current_buffer
->undo_list
= Qt
;
1388 current_buffer
->truncate_lines
= Qt
;
1390 write_string ("Proc", -1);
1391 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1392 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1395 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1397 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1398 write_string ("\n", -1);
1400 write_string ("----", -1);
1401 Findent_to (i_status
, minspace
); write_string ("------", -1);
1402 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1405 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1407 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1408 write_string ("\n", -1);
1410 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1414 proc
= Fcdr (XCAR (tail
));
1415 p
= XPROCESS (proc
);
1416 if (NILP (p
->childp
))
1418 if (!NILP (query_only
) && p
->kill_without_query
)
1421 Finsert (1, &p
->name
);
1422 Findent_to (i_status
, minspace
);
1424 if (p
->raw_status_new
)
1427 if (CONSP (p
->status
))
1428 symbol
= XCAR (p
->status
);
1430 if (EQ (symbol
, Qsignal
))
1433 tem
= Fcar (Fcdr (p
->status
));
1435 if (XINT (tem
) < NSIG
)
1436 write_string (sys_errlist
[XINT (tem
)], -1);
1439 Fprinc (symbol
, Qnil
);
1441 else if (NETCONN1_P (p
))
1443 if (EQ (symbol
, Qexit
))
1444 write_string ("closed", -1);
1445 else if (EQ (p
->command
, Qt
))
1446 write_string ("stopped", -1);
1447 else if (EQ (symbol
, Qrun
))
1448 write_string ("open", -1);
1450 Fprinc (symbol
, Qnil
);
1453 Fprinc (symbol
, Qnil
);
1455 if (EQ (symbol
, Qexit
))
1458 tem
= Fcar (Fcdr (p
->status
));
1461 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1462 write_string (tembuf
, -1);
1466 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1469 Findent_to (i_buffer
, minspace
);
1470 if (NILP (p
->buffer
))
1471 insert_string ("(none)");
1472 else if (NILP (XBUFFER (p
->buffer
)->name
))
1473 insert_string ("(Killed)");
1475 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1479 Findent_to (i_tty
, minspace
);
1480 if (STRINGP (p
->tty_name
))
1481 Finsert (1, &p
->tty_name
);
1484 Findent_to (i_command
, minspace
);
1486 if (EQ (p
->status
, Qlisten
))
1488 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1489 if (INTEGERP (port
))
1490 port
= Fnumber_to_string (port
);
1492 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1493 sprintf (tembuf
, "(network %s server on %s)\n",
1494 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1495 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1496 insert_string (tembuf
);
1498 else if (NETCONN1_P (p
))
1500 /* For a local socket, there is no host name,
1501 so display service instead. */
1502 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1503 if (!STRINGP (host
))
1505 host
= Fplist_get (p
->childp
, QCservice
);
1506 if (INTEGERP (host
))
1507 host
= Fnumber_to_string (host
);
1510 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1511 sprintf (tembuf
, "(network %s connection to %s)\n",
1512 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1513 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1514 insert_string (tembuf
);
1526 insert_string (" ");
1528 insert_string ("\n");
1532 status_notify (NULL
);
1536 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1537 doc
: /* Display a list of all processes.
1538 If optional argument QUERY-ONLY is non-nil, only processes with
1539 the query-on-exit flag set will be listed.
1540 Any process listed as exited or signaled is actually eliminated
1541 after the listing is made. */)
1543 Lisp_Object query_only
;
1545 internal_with_output_to_temp_buffer ("*Process List*",
1546 list_processes_1
, query_only
);
1550 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1551 doc
: /* Return a list of all processes. */)
1554 return Fmapcar (Qcdr
, Vprocess_alist
);
1557 /* Starting asynchronous inferior processes. */
1559 static Lisp_Object
start_process_unwind ();
1561 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1562 doc
: /* Start a program in a subprocess. Return the process object for it.
1563 NAME is name for process. It is modified if necessary to make it unique.
1564 BUFFER is the buffer (or buffer name) to associate with the process.
1566 Process output (both standard output and standard error streams) goes
1567 at end of BUFFER, unless you specify an output stream or filter
1568 function to handle the output. BUFFER may also be nil, meaning that
1569 this process is not associated with any buffer.
1571 PROGRAM is the program file name. It is searched for in PATH.
1572 Remaining arguments are strings to give program as arguments.
1574 If you want to separate standard output from standard error, invoke
1575 the command through a shell and redirect one of them using the shell
1578 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1581 register Lisp_Object
*args
;
1583 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1585 register unsigned char *new_argv
;
1588 register unsigned char **new_argv
;
1591 int count
= SPECPDL_INDEX ();
1595 buffer
= Fget_buffer_create (buffer
);
1597 /* Make sure that the child will be able to chdir to the current
1598 buffer's current directory, or its unhandled equivalent. We
1599 can't just have the child check for an error when it does the
1600 chdir, since it's in a vfork.
1602 We have to GCPRO around this because Fexpand_file_name and
1603 Funhandled_file_name_directory might call a file name handling
1604 function. The argument list is protected by the caller, so all
1605 we really have to worry about is buffer. */
1607 struct gcpro gcpro1
, gcpro2
;
1609 current_dir
= current_buffer
->directory
;
1611 GCPRO2 (buffer
, current_dir
);
1614 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1616 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1617 report_file_error ("Setting current directory",
1618 Fcons (current_buffer
->directory
, Qnil
));
1624 CHECK_STRING (name
);
1628 CHECK_STRING (program
);
1630 proc
= make_process (name
);
1631 /* If an error occurs and we can't start the process, we want to
1632 remove it from the process list. This means that each error
1633 check in create_process doesn't need to call remove_process
1634 itself; it's all taken care of here. */
1635 record_unwind_protect (start_process_unwind
, proc
);
1637 XPROCESS (proc
)->childp
= Qt
;
1638 XPROCESS (proc
)->plist
= Qnil
;
1639 XPROCESS (proc
)->buffer
= buffer
;
1640 XPROCESS (proc
)->sentinel
= Qnil
;
1641 XPROCESS (proc
)->filter
= Qnil
;
1642 XPROCESS (proc
)->filter_multibyte
1643 = !NILP (buffer_defaults
.enable_multibyte_characters
);
1644 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1646 #ifdef ADAPTIVE_READ_BUFFERING
1647 XPROCESS (proc
)->adaptive_read_buffering
1648 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1649 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1652 /* Make the process marker point into the process buffer (if any). */
1653 if (BUFFERP (buffer
))
1654 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1655 BUF_ZV (XBUFFER (buffer
)),
1656 BUF_ZV_BYTE (XBUFFER (buffer
)));
1659 /* Decide coding systems for communicating with the process. Here
1660 we don't setup the structure coding_system nor pay attention to
1661 unibyte mode. They are done in create_process. */
1663 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1664 Lisp_Object coding_systems
= Qt
;
1665 Lisp_Object val
, *args2
;
1666 struct gcpro gcpro1
, gcpro2
;
1668 val
= Vcoding_system_for_read
;
1671 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1672 args2
[0] = Qstart_process
;
1673 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1674 GCPRO2 (proc
, current_dir
);
1675 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1677 if (CONSP (coding_systems
))
1678 val
= XCAR (coding_systems
);
1679 else if (CONSP (Vdefault_process_coding_system
))
1680 val
= XCAR (Vdefault_process_coding_system
);
1682 XPROCESS (proc
)->decode_coding_system
= val
;
1684 val
= Vcoding_system_for_write
;
1687 if (EQ (coding_systems
, Qt
))
1689 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1690 args2
[0] = Qstart_process
;
1691 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1692 GCPRO2 (proc
, current_dir
);
1693 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1696 if (CONSP (coding_systems
))
1697 val
= XCDR (coding_systems
);
1698 else if (CONSP (Vdefault_process_coding_system
))
1699 val
= XCDR (Vdefault_process_coding_system
);
1701 XPROCESS (proc
)->encode_coding_system
= val
;
1705 /* Make a one member argv with all args concatenated
1706 together separated by a blank. */
1707 len
= SBYTES (program
) + 2;
1708 for (i
= 3; i
< nargs
; i
++)
1712 len
+= SBYTES (tem
) + 1; /* count the blank */
1714 new_argv
= (unsigned char *) alloca (len
);
1715 strcpy (new_argv
, SDATA (program
));
1716 for (i
= 3; i
< nargs
; i
++)
1720 strcat (new_argv
, " ");
1721 strcat (new_argv
, SDATA (tem
));
1723 /* Need to add code here to check for program existence on VMS */
1726 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1728 /* If program file name is not absolute, search our path for it.
1729 Put the name we will really use in TEM. */
1730 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1731 && !(SCHARS (program
) > 1
1732 && IS_DEVICE_SEP (SREF (program
, 1))))
1734 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1737 GCPRO4 (name
, program
, buffer
, current_dir
);
1738 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1741 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1742 tem
= Fexpand_file_name (tem
, Qnil
);
1746 if (!NILP (Ffile_directory_p (program
)))
1747 error ("Specified program for new process is a directory");
1751 /* If program file name starts with /: for quoting a magic name,
1753 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1754 && SREF (tem
, 1) == ':')
1755 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1757 /* Encode the file name and put it in NEW_ARGV.
1758 That's where the child will use it to execute the program. */
1759 tem
= ENCODE_FILE (tem
);
1760 new_argv
[0] = SDATA (tem
);
1762 /* Here we encode arguments by the coding system used for sending
1763 data to the process. We don't support using different coding
1764 systems for encoding arguments and for encoding data sent to the
1767 for (i
= 3; i
< nargs
; i
++)
1771 if (STRING_MULTIBYTE (tem
))
1772 tem
= (code_convert_string_norecord
1773 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1774 new_argv
[i
- 2] = SDATA (tem
);
1776 new_argv
[i
- 2] = 0;
1777 #endif /* not VMS */
1779 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1780 XPROCESS (proc
)->decoding_carryover
= 0;
1781 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1783 XPROCESS (proc
)->inherit_coding_system_flag
1784 = !(NILP (buffer
) || !inherit_process_coding_system
);
1786 create_process (proc
, (char **) new_argv
, current_dir
);
1788 return unbind_to (count
, proc
);
1791 /* This function is the unwind_protect form for Fstart_process. If
1792 PROC doesn't have its pid set, then we know someone has signaled
1793 an error and the process wasn't started successfully, so we should
1794 remove it from the process list. */
1796 start_process_unwind (proc
)
1799 if (!PROCESSP (proc
))
1802 /* Was PROC started successfully? */
1803 if (XPROCESS (proc
)->pid
<= 0)
1804 remove_process (proc
);
1810 create_process_1 (timer
)
1811 struct atimer
*timer
;
1813 /* Nothing to do. */
1817 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1820 /* Mimic blocking of signals on system V, which doesn't really have it. */
1822 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1823 int sigchld_deferred
;
1826 create_process_sigchld ()
1828 signal (SIGCHLD
, create_process_sigchld
);
1830 sigchld_deferred
= 1;
1836 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1838 create_process (process
, new_argv
, current_dir
)
1839 Lisp_Object process
;
1841 Lisp_Object current_dir
;
1843 int inchannel
, outchannel
;
1846 #ifdef POSIX_SIGNALS
1849 struct sigaction sigint_action
;
1850 struct sigaction sigquit_action
;
1852 struct sigaction sighup_action
;
1854 #else /* !POSIX_SIGNALS */
1857 SIGTYPE (*sigchld
)();
1860 #endif /* !POSIX_SIGNALS */
1861 /* Use volatile to protect variables from being clobbered by longjmp. */
1862 volatile int forkin
, forkout
;
1863 volatile int pty_flag
= 0;
1865 extern char **environ
;
1868 inchannel
= outchannel
= -1;
1871 if (!NILP (Vprocess_connection_type
))
1872 outchannel
= inchannel
= allocate_pty ();
1876 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1877 /* On most USG systems it does not work to open the pty's tty here,
1878 then close it and reopen it in the child. */
1880 /* Don't let this terminal become our controlling terminal
1881 (in case we don't have one). */
1882 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1884 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1887 report_file_error ("Opening pty", Qnil
);
1888 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1889 /* In the case that vfork is defined as fork, the parent process
1890 (Emacs) may send some data before the child process completes
1891 tty options setup. So we setup tty before forking. */
1892 child_setup_tty (forkout
);
1893 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1895 forkin
= forkout
= -1;
1896 #endif /* not USG, or USG_SUBTTY_WORKS */
1900 #endif /* HAVE_PTYS */
1903 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1904 report_file_error ("Opening socketpair", Qnil
);
1905 outchannel
= inchannel
= sv
[0];
1906 forkout
= forkin
= sv
[1];
1908 #else /* not SKTPAIR */
1913 report_file_error ("Creating pipe", Qnil
);
1919 emacs_close (inchannel
);
1920 emacs_close (forkout
);
1921 report_file_error ("Creating pipe", Qnil
);
1926 #endif /* not SKTPAIR */
1929 /* Replaced by close_process_descs */
1930 set_exclusive_use (inchannel
);
1931 set_exclusive_use (outchannel
);
1934 /* Stride people say it's a mystery why this is needed
1935 as well as the O_NDELAY, but that it fails without this. */
1936 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1939 ioctl (inchannel
, FIONBIO
, &one
);
1944 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1945 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1948 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1949 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1953 /* Record this as an active process, with its channels.
1954 As a result, child_setup will close Emacs's side of the pipes. */
1955 chan_process
[inchannel
] = process
;
1956 XPROCESS (process
)->infd
= inchannel
;
1957 XPROCESS (process
)->outfd
= outchannel
;
1959 /* Previously we recorded the tty descriptor used in the subprocess.
1960 It was only used for getting the foreground tty process, so now
1961 we just reopen the device (see emacs_get_tty_pgrp) as this is
1962 more portable (see USG_SUBTTY_WORKS above). */
1964 XPROCESS (process
)->pty_flag
= pty_flag
;
1965 XPROCESS (process
)->status
= Qrun
;
1966 setup_process_coding_systems (process
);
1968 /* Delay interrupts until we have a chance to store
1969 the new fork's pid in its process structure */
1970 #ifdef POSIX_SIGNALS
1971 sigemptyset (&blocked
);
1973 sigaddset (&blocked
, SIGCHLD
);
1975 #ifdef HAVE_WORKING_VFORK
1976 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1977 this sets the parent's signal handlers as well as the child's.
1978 So delay all interrupts whose handlers the child might munge,
1979 and record the current handlers so they can be restored later. */
1980 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1981 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1983 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1985 #endif /* HAVE_WORKING_VFORK */
1986 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1987 #else /* !POSIX_SIGNALS */
1991 #else /* not BSD4_1 */
1992 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1993 sigsetmask (sigmask (SIGCHLD
));
1994 #else /* ordinary USG */
1996 sigchld_deferred
= 0;
1997 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1999 #endif /* ordinary USG */
2000 #endif /* not BSD4_1 */
2001 #endif /* SIGCHLD */
2002 #endif /* !POSIX_SIGNALS */
2004 FD_SET (inchannel
, &input_wait_mask
);
2005 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2006 if (inchannel
> max_process_desc
)
2007 max_process_desc
= inchannel
;
2009 /* Until we store the proper pid, enable sigchld_handler
2010 to recognize an unknown pid as standing for this process.
2011 It is very important not to let this `marker' value stay
2012 in the table after this function has returned; if it does
2013 it might cause call-process to hang and subsequent asynchronous
2014 processes to get their return values scrambled. */
2015 XPROCESS (process
)->pid
= -1;
2020 /* child_setup must clobber environ on systems with true vfork.
2021 Protect it from permanent change. */
2022 char **save_environ
= environ
;
2024 current_dir
= ENCODE_FILE (current_dir
);
2029 #endif /* not WINDOWSNT */
2031 int xforkin
= forkin
;
2032 int xforkout
= forkout
;
2034 #if 0 /* This was probably a mistake--it duplicates code later on,
2035 but fails to handle all the cases. */
2036 /* Make sure SIGCHLD is not blocked in the child. */
2037 sigsetmask (SIGEMPTYMASK
);
2040 /* Make the pty be the controlling terminal of the process. */
2042 /* First, disconnect its current controlling terminal. */
2044 /* We tried doing setsid only if pty_flag, but it caused
2045 process_set_signal to fail on SGI when using a pipe. */
2047 /* Make the pty's terminal the controlling terminal. */
2051 /* We ignore the return value
2052 because faith@cs.unc.edu says that is necessary on Linux. */
2053 ioctl (xforkin
, TIOCSCTTY
, 0);
2056 #else /* not HAVE_SETSID */
2058 /* It's very important to call setpgrp here and no time
2059 afterwards. Otherwise, we lose our controlling tty which
2060 is set when we open the pty. */
2063 #endif /* not HAVE_SETSID */
2064 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2065 if (pty_flag
&& xforkin
>= 0)
2068 tcgetattr (xforkin
, &t
);
2070 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2071 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2074 #if defined (NTTYDISC) && defined (TIOCSETD)
2075 if (pty_flag
&& xforkin
>= 0)
2077 /* Use new line discipline. */
2078 int ldisc
= NTTYDISC
;
2079 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2084 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2085 can do TIOCSPGRP only to the process's controlling tty. */
2088 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2089 I can't test it since I don't have 4.3. */
2090 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2091 ioctl (j
, TIOCNOTTY
, 0);
2094 /* In order to get a controlling terminal on some versions
2095 of BSD, it is necessary to put the process in pgrp 0
2096 before it opens the terminal. */
2104 #endif /* TIOCNOTTY */
2106 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2107 /*** There is a suggestion that this ought to be a
2108 conditional on TIOCSPGRP,
2109 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2110 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2111 that system does seem to need this code, even though
2112 both HAVE_SETSID and TIOCSCTTY are defined. */
2113 /* Now close the pty (if we had it open) and reopen it.
2114 This makes the pty the controlling terminal of the subprocess. */
2117 #ifdef SET_CHILD_PTY_PGRP
2118 int pgrp
= getpid ();
2121 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2124 emacs_close (xforkin
);
2125 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2129 emacs_write (1, "Couldn't open the pty terminal ", 31);
2130 emacs_write (1, pty_name
, strlen (pty_name
));
2131 emacs_write (1, "\n", 1);
2135 #ifdef SET_CHILD_PTY_PGRP
2136 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2137 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2140 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2142 #ifdef SETUP_SLAVE_PTY
2147 #endif /* SETUP_SLAVE_PTY */
2149 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2150 Now reenable it in the child, so it will die when we want it to. */
2152 signal (SIGHUP
, SIG_DFL
);
2154 #endif /* HAVE_PTYS */
2156 signal (SIGINT
, SIG_DFL
);
2157 signal (SIGQUIT
, SIG_DFL
);
2159 /* Stop blocking signals in the child. */
2160 #ifdef POSIX_SIGNALS
2161 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2162 #else /* !POSIX_SIGNALS */
2166 #else /* not BSD4_1 */
2167 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2168 sigsetmask (SIGEMPTYMASK
);
2169 #else /* ordinary USG */
2171 signal (SIGCHLD
, sigchld
);
2173 #endif /* ordinary USG */
2174 #endif /* not BSD4_1 */
2175 #endif /* SIGCHLD */
2176 #endif /* !POSIX_SIGNALS */
2178 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2180 child_setup_tty (xforkout
);
2181 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2183 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2184 new_argv
, 1, current_dir
);
2185 #else /* not WINDOWSNT */
2186 child_setup (xforkin
, xforkout
, xforkout
,
2187 new_argv
, 1, current_dir
);
2188 #endif /* not WINDOWSNT */
2190 environ
= save_environ
;
2195 /* This runs in the Emacs process. */
2199 emacs_close (forkin
);
2200 if (forkin
!= forkout
&& forkout
>= 0)
2201 emacs_close (forkout
);
2205 /* vfork succeeded. */
2206 XPROCESS (process
)->pid
= pid
;
2209 register_child (pid
, inchannel
);
2210 #endif /* WINDOWSNT */
2212 /* If the subfork execv fails, and it exits,
2213 this close hangs. I don't know why.
2214 So have an interrupt jar it loose. */
2216 struct atimer
*timer
;
2220 EMACS_SET_SECS_USECS (offset
, 1, 0);
2221 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2224 emacs_close (forkin
);
2226 cancel_atimer (timer
);
2230 if (forkin
!= forkout
&& forkout
>= 0)
2231 emacs_close (forkout
);
2235 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2238 XPROCESS (process
)->tty_name
= Qnil
;
2241 /* Restore the signal state whether vfork succeeded or not.
2242 (We will signal an error, below, if it failed.) */
2243 #ifdef POSIX_SIGNALS
2244 #ifdef HAVE_WORKING_VFORK
2245 /* Restore the parent's signal handlers. */
2246 sigaction (SIGINT
, &sigint_action
, 0);
2247 sigaction (SIGQUIT
, &sigquit_action
, 0);
2249 sigaction (SIGHUP
, &sighup_action
, 0);
2251 #endif /* HAVE_WORKING_VFORK */
2252 /* Stop blocking signals in the parent. */
2253 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2254 #else /* !POSIX_SIGNALS */
2258 #else /* not BSD4_1 */
2259 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2260 sigsetmask (SIGEMPTYMASK
);
2261 #else /* ordinary USG */
2263 signal (SIGCHLD
, sigchld
);
2264 /* Now really handle any of these signals
2265 that came in during this function. */
2266 if (sigchld_deferred
)
2267 kill (getpid (), SIGCHLD
);
2269 #endif /* ordinary USG */
2270 #endif /* not BSD4_1 */
2271 #endif /* SIGCHLD */
2272 #endif /* !POSIX_SIGNALS */
2274 /* Now generate the error if vfork failed. */
2276 report_file_error ("Doing vfork", Qnil
);
2278 #endif /* not VMS */
2283 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2284 The address family of sa is not included in the result. */
2287 conv_sockaddr_to_lisp (sa
, len
)
2288 struct sockaddr
*sa
;
2291 Lisp_Object address
;
2294 register struct Lisp_Vector
*p
;
2296 switch (sa
->sa_family
)
2300 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2301 len
= sizeof (sin
->sin_addr
) + 1;
2302 address
= Fmake_vector (make_number (len
), Qnil
);
2303 p
= XVECTOR (address
);
2304 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2305 cp
= (unsigned char *)&sin
->sin_addr
;
2311 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2312 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2313 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2314 address
= Fmake_vector (make_number (len
), Qnil
);
2315 p
= XVECTOR (address
);
2316 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2317 for (i
= 0; i
< len
; i
++)
2318 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2322 #ifdef HAVE_LOCAL_SOCKETS
2325 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2326 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2327 if (sockun
->sun_path
[i
] == 0)
2329 return make_unibyte_string (sockun
->sun_path
, i
);
2333 len
-= sizeof (sa
->sa_family
);
2334 address
= Fcons (make_number (sa
->sa_family
),
2335 Fmake_vector (make_number (len
), Qnil
));
2336 p
= XVECTOR (XCDR (address
));
2337 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2343 p
->contents
[i
++] = make_number (*cp
++);
2349 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2352 get_lisp_to_sockaddr_size (address
, familyp
)
2353 Lisp_Object address
;
2356 register struct Lisp_Vector
*p
;
2358 if (VECTORP (address
))
2360 p
= XVECTOR (address
);
2364 return sizeof (struct sockaddr_in
);
2367 else if (p
->size
== 9)
2369 *familyp
= AF_INET6
;
2370 return sizeof (struct sockaddr_in6
);
2374 #ifdef HAVE_LOCAL_SOCKETS
2375 else if (STRINGP (address
))
2377 *familyp
= AF_LOCAL
;
2378 return sizeof (struct sockaddr_un
);
2381 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2383 struct sockaddr
*sa
;
2384 *familyp
= XINT (XCAR (address
));
2385 p
= XVECTOR (XCDR (address
));
2386 return p
->size
+ sizeof (sa
->sa_family
);
2391 /* Convert an address object (vector or string) to an internal sockaddr.
2393 The address format has been basically validated by
2394 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2395 it could have come from user data. So if FAMILY is not valid,
2396 we return after zeroing *SA. */
2399 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2401 Lisp_Object address
;
2402 struct sockaddr
*sa
;
2405 register struct Lisp_Vector
*p
;
2406 register unsigned char *cp
= NULL
;
2411 if (VECTORP (address
))
2413 p
= XVECTOR (address
);
2414 if (family
== AF_INET
)
2416 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2417 len
= sizeof (sin
->sin_addr
) + 1;
2418 i
= XINT (p
->contents
[--len
]);
2419 sin
->sin_port
= htons (i
);
2420 cp
= (unsigned char *)&sin
->sin_addr
;
2421 sa
->sa_family
= family
;
2424 else if (family
== AF_INET6
)
2426 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2427 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2428 len
= sizeof (sin6
->sin6_addr
) + 1;
2429 i
= XINT (p
->contents
[--len
]);
2430 sin6
->sin6_port
= htons (i
);
2431 for (i
= 0; i
< len
; i
++)
2432 if (INTEGERP (p
->contents
[i
]))
2434 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2437 sa
->sa_family
= family
;
2442 else if (STRINGP (address
))
2444 #ifdef HAVE_LOCAL_SOCKETS
2445 if (family
== AF_LOCAL
)
2447 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2448 cp
= SDATA (address
);
2449 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2450 sockun
->sun_path
[i
] = *cp
++;
2451 sa
->sa_family
= family
;
2458 p
= XVECTOR (XCDR (address
));
2459 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2462 for (i
= 0; i
< len
; i
++)
2463 if (INTEGERP (p
->contents
[i
]))
2464 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2467 #ifdef DATAGRAM_SOCKETS
2468 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2470 doc
: /* Get the current datagram address associated with PROCESS. */)
2472 Lisp_Object process
;
2476 CHECK_PROCESS (process
);
2478 if (!DATAGRAM_CONN_P (process
))
2481 channel
= XPROCESS (process
)->infd
;
2482 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2483 datagram_address
[channel
].len
);
2486 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2488 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2489 Returns nil upon error setting address, ADDRESS otherwise. */)
2491 Lisp_Object process
, address
;
2496 CHECK_PROCESS (process
);
2498 if (!DATAGRAM_CONN_P (process
))
2501 channel
= XPROCESS (process
)->infd
;
2503 len
= get_lisp_to_sockaddr_size (address
, &family
);
2504 if (datagram_address
[channel
].len
!= len
)
2506 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2512 static struct socket_options
{
2513 /* The name of this option. Should be lowercase version of option
2514 name without SO_ prefix. */
2516 /* Option level SOL_... */
2518 /* Option number SO_... */
2520 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2521 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2522 } socket_options
[] =
2524 #ifdef SO_BINDTODEVICE
2525 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2528 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2531 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2534 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2537 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2540 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2543 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2546 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2548 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2551 /* Set option OPT to value VAL on socket S.
2553 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2554 Signals an error if setting a known option fails.
2558 set_socket_option (s
, opt
, val
)
2560 Lisp_Object opt
, val
;
2563 struct socket_options
*sopt
;
2568 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2569 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2570 if (strcmp (name
, sopt
->name
) == 0)
2573 switch (sopt
->opttype
)
2578 optval
= NILP (val
) ? 0 : 1;
2579 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2580 &optval
, sizeof (optval
));
2588 optval
= XINT (val
);
2590 error ("Bad option value for %s", name
);
2591 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2592 &optval
, sizeof (optval
));
2596 #ifdef SO_BINDTODEVICE
2599 char devname
[IFNAMSIZ
+1];
2601 /* This is broken, at least in the Linux 2.4 kernel.
2602 To unbind, the arg must be a zero integer, not the empty string.
2603 This should work on all systems. KFS. 2003-09-23. */
2604 bzero (devname
, sizeof devname
);
2607 char *arg
= (char *) SDATA (val
);
2608 int len
= min (strlen (arg
), IFNAMSIZ
);
2609 bcopy (arg
, devname
, len
);
2611 else if (!NILP (val
))
2612 error ("Bad option value for %s", name
);
2613 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2622 struct linger linger
;
2625 linger
.l_linger
= 0;
2627 linger
.l_linger
= XINT (val
);
2629 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2630 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2631 &linger
, sizeof (linger
));
2641 report_file_error ("Cannot set network option",
2642 Fcons (opt
, Fcons (val
, Qnil
)));
2643 return (1 << sopt
->optbit
);
2647 DEFUN ("set-network-process-option",
2648 Fset_network_process_option
, Sset_network_process_option
,
2650 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2651 See `make-network-process' for a list of options and values.
2652 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2653 OPTION is not a supported option, return nil instead; otherwise return t. */)
2654 (process
, option
, value
, no_error
)
2655 Lisp_Object process
, option
, value
;
2656 Lisp_Object no_error
;
2659 struct Lisp_Process
*p
;
2661 CHECK_PROCESS (process
);
2662 p
= XPROCESS (process
);
2663 if (!NETCONN1_P (p
))
2664 error ("Process is not a network process");
2668 error ("Process is not running");
2670 if (set_socket_option (s
, option
, value
))
2672 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2676 if (NILP (no_error
))
2677 error ("Unknown or unsupported option");
2683 /* A version of request_sigio suitable for a record_unwind_protect. */
2686 unwind_request_sigio (dummy
)
2689 if (interrupt_input
)
2694 /* Create a network stream/datagram client/server process. Treated
2695 exactly like a normal process when reading and writing. Primary
2696 differences are in status display and process deletion. A network
2697 connection has no PID; you cannot signal it. All you can do is
2698 stop/continue it and deactivate/close it via delete-process */
2700 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2702 doc
: /* Create and return a network server or client process.
2704 In Emacs, network connections are represented by process objects, so
2705 input and output work as for subprocesses and `delete-process' closes
2706 a network connection. However, a network process has no process id,
2707 it cannot be signaled, and the status codes are different from normal
2710 Arguments are specified as keyword/argument pairs. The following
2711 arguments are defined:
2713 :name NAME -- NAME is name for process. It is modified if necessary
2716 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2717 with the process. Process output goes at end of that buffer, unless
2718 you specify an output stream or filter function to handle the output.
2719 BUFFER may be also nil, meaning that this process is not associated
2722 :host HOST -- HOST is name of the host to connect to, or its IP
2723 address. The symbol `local' specifies the local host. If specified
2724 for a server process, it must be a valid name or address for the local
2725 host, and only clients connecting to that address will be accepted.
2727 :service SERVICE -- SERVICE is name of the service desired, or an
2728 integer specifying a port number to connect to. If SERVICE is t,
2729 a random port number is selected for the server. (If Emacs was
2730 compiled with getaddrinfo, a port number can also be specified as a
2731 string, e.g. "80", as well as an integer. This is not portable.)
2733 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2734 stream type connection, `datagram' creates a datagram type connection.
2736 :family FAMILY -- FAMILY is the address (and protocol) family for the
2737 service specified by HOST and SERVICE. The default (nil) is to use
2738 whatever address family (IPv4 or IPv6) that is defined for the host
2739 and port number specified by HOST and SERVICE. Other address families
2741 local -- for a local (i.e. UNIX) address specified by SERVICE.
2742 ipv4 -- use IPv4 address family only.
2743 ipv6 -- use IPv6 address family only.
2745 :local ADDRESS -- ADDRESS is the local address used for the connection.
2746 This parameter is ignored when opening a client process. When specified
2747 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2749 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2750 connection. This parameter is ignored when opening a stream server
2751 process. For a datagram server process, it specifies the initial
2752 setting of the remote datagram address. When specified for a client
2753 process, the FAMILY, HOST, and SERVICE args are ignored.
2755 The format of ADDRESS depends on the address family:
2756 - An IPv4 address is represented as an vector of integers [A B C D P]
2757 corresponding to numeric IP address A.B.C.D and port number P.
2758 - A local address is represented as a string with the address in the
2759 local address space.
2760 - An "unsupported family" address is represented by a cons (F . AV)
2761 where F is the family number and AV is a vector containing the socket
2762 address data with one element per address data byte. Do not rely on
2763 this format in portable code, as it may depend on implementation
2764 defined constants, data sizes, and data structure alignment.
2766 :coding CODING -- If CODING is a symbol, it specifies the coding
2767 system used for both reading and writing for this process. If CODING
2768 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2769 ENCODING is used for writing.
2771 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2772 return without waiting for the connection to complete; instead, the
2773 sentinel function will be called with second arg matching "open" (if
2774 successful) or "failed" when the connect completes. Default is to use
2775 a blocking connect (i.e. wait) for stream type connections.
2777 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2778 running when Emacs is exited.
2780 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2781 In the stopped state, a server process does not accept new
2782 connections, and a client process does not handle incoming traffic.
2783 The stopped state is cleared by `continue-process' and set by
2786 :filter FILTER -- Install FILTER as the process filter.
2788 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2789 process filter are multibyte, otherwise they are unibyte.
2790 If this keyword is not specified, the strings are multibyte if
2791 `default-enable-multibyte-characters' is non-nil.
2793 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2795 :log LOG -- Install LOG as the server process log function. This
2796 function is called when the server accepts a network connection from a
2797 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2798 is the server process, CLIENT is the new process for the connection,
2799 and MESSAGE is a string.
2801 :plist PLIST -- Install PLIST as the new process' initial plist.
2803 :server QLEN -- if QLEN is non-nil, create a server process for the
2804 specified FAMILY, SERVICE, and connection type (stream or datagram).
2805 If QLEN is an integer, it is used as the max. length of the server's
2806 pending connection queue (also known as the backlog); the default
2807 queue length is 5. Default is to create a client process.
2809 The following network options can be specified for this connection:
2811 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2812 :dontroute BOOL -- Only send to directly connected hosts.
2813 :keepalive BOOL -- Send keep-alive messages on network stream.
2814 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2815 :oobinline BOOL -- Place out-of-band data in receive data stream.
2816 :priority INT -- Set protocol defined priority for sent packets.
2817 :reuseaddr BOOL -- Allow reusing a recently used local address
2818 (this is allowed by default for a server process).
2819 :bindtodevice NAME -- bind to interface NAME. Using this may require
2820 special privileges on some systems.
2822 Consult the relevant system programmer's manual pages for more
2823 information on using these options.
2826 A server process will listen for and accept connections from clients.
2827 When a client connection is accepted, a new network process is created
2828 for the connection with the following parameters:
2830 - The client's process name is constructed by concatenating the server
2831 process' NAME and a client identification string.
2832 - If the FILTER argument is non-nil, the client process will not get a
2833 separate process buffer; otherwise, the client's process buffer is a newly
2834 created buffer named after the server process' BUFFER name or process
2835 NAME concatenated with the client identification string.
2836 - The connection type and the process filter and sentinel parameters are
2837 inherited from the server process' TYPE, FILTER and SENTINEL.
2838 - The client process' contact info is set according to the client's
2839 addressing information (typically an IP address and a port number).
2840 - The client process' plist is initialized from the server's plist.
2842 Notice that the FILTER and SENTINEL args are never used directly by
2843 the server process. Also, the BUFFER argument is not used directly by
2844 the server process, but via the optional :log function, accepted (and
2845 failed) connections may be logged in the server process' buffer.
2847 The original argument list, modified with the actual connection
2848 information, is available via the `process-contact' function.
2850 usage: (make-network-process &rest ARGS) */)
2856 Lisp_Object contact
;
2857 struct Lisp_Process
*p
;
2858 #ifdef HAVE_GETADDRINFO
2859 struct addrinfo ai
, *res
, *lres
;
2860 struct addrinfo hints
;
2861 char *portstring
, portbuf
[128];
2862 #else /* HAVE_GETADDRINFO */
2863 struct _emacs_addrinfo
2869 struct sockaddr
*ai_addr
;
2870 struct _emacs_addrinfo
*ai_next
;
2872 #endif /* HAVE_GETADDRINFO */
2873 struct sockaddr_in address_in
;
2874 #ifdef HAVE_LOCAL_SOCKETS
2875 struct sockaddr_un address_un
;
2880 int s
= -1, outch
, inch
;
2881 struct gcpro gcpro1
;
2882 int count
= SPECPDL_INDEX ();
2884 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2886 Lisp_Object name
, buffer
, host
, service
, address
;
2887 Lisp_Object filter
, sentinel
;
2888 int is_non_blocking_client
= 0;
2889 int is_server
= 0, backlog
= 5;
2896 /* Save arguments for process-contact and clone-process. */
2897 contact
= Flist (nargs
, args
);
2901 /* Ensure socket support is loaded if available. */
2902 init_winsock (TRUE
);
2905 /* :type TYPE (nil: stream, datagram */
2906 tem
= Fplist_get (contact
, QCtype
);
2908 socktype
= SOCK_STREAM
;
2909 #ifdef DATAGRAM_SOCKETS
2910 else if (EQ (tem
, Qdatagram
))
2911 socktype
= SOCK_DGRAM
;
2914 error ("Unsupported connection type");
2917 tem
= Fplist_get (contact
, QCserver
);
2920 /* Don't support network sockets when non-blocking mode is
2921 not available, since a blocked Emacs is not useful. */
2922 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2923 error ("Network servers not supported");
2927 backlog
= XINT (tem
);
2931 /* Make QCaddress an alias for :local (server) or :remote (client). */
2932 QCaddress
= is_server
? QClocal
: QCremote
;
2935 if (!is_server
&& socktype
== SOCK_STREAM
2936 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2938 #ifndef NON_BLOCKING_CONNECT
2939 error ("Non-blocking connect not supported");
2941 is_non_blocking_client
= 1;
2945 name
= Fplist_get (contact
, QCname
);
2946 buffer
= Fplist_get (contact
, QCbuffer
);
2947 filter
= Fplist_get (contact
, QCfilter
);
2948 sentinel
= Fplist_get (contact
, QCsentinel
);
2950 CHECK_STRING (name
);
2953 /* Let's handle TERM before things get complicated ... */
2954 host
= Fplist_get (contact
, QChost
);
2955 CHECK_STRING (host
);
2957 service
= Fplist_get (contact
, QCservice
);
2958 if (INTEGERP (service
))
2959 port
= htons ((unsigned short) XINT (service
));
2962 struct servent
*svc_info
;
2963 CHECK_STRING (service
);
2964 svc_info
= getservbyname (SDATA (service
), "tcp");
2966 error ("Unknown service: %s", SDATA (service
));
2967 port
= svc_info
->s_port
;
2970 s
= connect_server (0);
2972 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2973 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2974 send_command (s
, C_DUMB
, 1, 0);
2976 #else /* not TERM */
2978 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2979 ai
.ai_socktype
= socktype
;
2984 /* :local ADDRESS or :remote ADDRESS */
2985 address
= Fplist_get (contact
, QCaddress
);
2986 if (!NILP (address
))
2988 host
= service
= Qnil
;
2990 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2991 error ("Malformed :address");
2992 ai
.ai_family
= family
;
2993 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2994 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2998 /* :family FAMILY -- nil (for Inet), local, or integer. */
2999 tem
= Fplist_get (contact
, QCfamily
);
3002 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3008 #ifdef HAVE_LOCAL_SOCKETS
3009 else if (EQ (tem
, Qlocal
))
3013 else if (EQ (tem
, Qipv6
))
3016 else if (EQ (tem
, Qipv4
))
3018 else if (INTEGERP (tem
))
3019 family
= XINT (tem
);
3021 error ("Unknown address family");
3023 ai
.ai_family
= family
;
3025 /* :service SERVICE -- string, integer (port number), or t (random port). */
3026 service
= Fplist_get (contact
, QCservice
);
3028 #ifdef HAVE_LOCAL_SOCKETS
3029 if (family
== AF_LOCAL
)
3031 /* Host is not used. */
3033 CHECK_STRING (service
);
3034 bzero (&address_un
, sizeof address_un
);
3035 address_un
.sun_family
= AF_LOCAL
;
3036 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3037 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3038 ai
.ai_addrlen
= sizeof address_un
;
3043 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3044 host
= Fplist_get (contact
, QChost
);
3047 if (EQ (host
, Qlocal
))
3048 host
= build_string ("localhost");
3049 CHECK_STRING (host
);
3052 /* Slow down polling to every ten seconds.
3053 Some kernels have a bug which causes retrying connect to fail
3054 after a connect. Polling can interfere with gethostbyname too. */
3055 #ifdef POLL_FOR_INPUT
3056 if (socktype
== SOCK_STREAM
)
3058 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3059 bind_polling_period (10);
3063 #ifdef HAVE_GETADDRINFO
3064 /* If we have a host, use getaddrinfo to resolve both host and service.
3065 Otherwise, use getservbyname to lookup the service. */
3069 /* SERVICE can either be a string or int.
3070 Convert to a C string for later use by getaddrinfo. */
3071 if (EQ (service
, Qt
))
3073 else if (INTEGERP (service
))
3075 sprintf (portbuf
, "%ld", (long) XINT (service
));
3076 portstring
= portbuf
;
3080 CHECK_STRING (service
);
3081 portstring
= SDATA (service
);
3086 memset (&hints
, 0, sizeof (hints
));
3088 hints
.ai_family
= family
;
3089 hints
.ai_socktype
= socktype
;
3090 hints
.ai_protocol
= 0;
3092 #ifdef HAVE_RES_INIT
3096 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3098 #ifdef HAVE_GAI_STRERROR
3099 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3101 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3107 #endif /* HAVE_GETADDRINFO */
3109 /* We end up here if getaddrinfo is not defined, or in case no hostname
3110 has been specified (e.g. for a local server process). */
3112 if (EQ (service
, Qt
))
3114 else if (INTEGERP (service
))
3115 port
= htons ((unsigned short) XINT (service
));
3118 struct servent
*svc_info
;
3119 CHECK_STRING (service
);
3120 svc_info
= getservbyname (SDATA (service
),
3121 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3123 error ("Unknown service: %s", SDATA (service
));
3124 port
= svc_info
->s_port
;
3127 bzero (&address_in
, sizeof address_in
);
3128 address_in
.sin_family
= family
;
3129 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3130 address_in
.sin_port
= port
;
3132 #ifndef HAVE_GETADDRINFO
3135 struct hostent
*host_info_ptr
;
3137 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3138 as it may `hang' Emacs for a very long time. */
3142 #ifdef HAVE_RES_INIT
3146 host_info_ptr
= gethostbyname (SDATA (host
));
3151 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3152 host_info_ptr
->h_length
);
3153 family
= host_info_ptr
->h_addrtype
;
3154 address_in
.sin_family
= family
;
3157 /* Attempt to interpret host as numeric inet address */
3159 IN_ADDR numeric_addr
;
3160 numeric_addr
= inet_addr ((char *) SDATA (host
));
3161 if (NUMERIC_ADDR_ERROR
)
3162 error ("Unknown host \"%s\"", SDATA (host
));
3164 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3165 sizeof (address_in
.sin_addr
));
3169 #endif /* not HAVE_GETADDRINFO */
3171 ai
.ai_family
= family
;
3172 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3173 ai
.ai_addrlen
= sizeof address_in
;
3178 /* Previously this was compiled unconditionally, but that seems
3179 unnecessary on modern systems, and `unrequest_sigio' was a noop
3180 under X anyway. --lorentey */
3181 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3182 when connect is interrupted. So let's not let it get interrupted.
3183 Note we do not turn off polling, because polling is only used
3184 when not interrupt_input, and thus not normally used on the systems
3185 which have this bug. On systems which use polling, there's no way
3186 to quit if polling is turned off. */
3188 && !is_server
&& socktype
== SOCK_STREAM
)
3190 /* Comment from KFS: The original open-network-stream code
3191 didn't unwind protect this, but it seems like the proper
3192 thing to do. In any case, I don't see how it could harm to
3193 do this -- and it makes cleanup (using unbind_to) easier. */
3194 record_unwind_protect (unwind_request_sigio
, Qnil
);
3199 /* Do this in case we never enter the for-loop below. */
3200 count1
= SPECPDL_INDEX ();
3203 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3209 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3216 #ifdef DATAGRAM_SOCKETS
3217 if (!is_server
&& socktype
== SOCK_DGRAM
)
3219 #endif /* DATAGRAM_SOCKETS */
3221 #ifdef NON_BLOCKING_CONNECT
3222 if (is_non_blocking_client
)
3225 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3227 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3239 /* Make us close S if quit. */
3240 record_unwind_protect (close_file_unwind
, make_number (s
));
3242 /* Parse network options in the arg list.
3243 We simply ignore anything which isn't a known option (including other keywords).
3244 An error is signalled if setting a known option fails. */
3245 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3246 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3250 /* Configure as a server socket. */
3252 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3253 explicit :reuseaddr key to override this. */
3254 #ifdef HAVE_LOCAL_SOCKETS
3255 if (family
!= AF_LOCAL
)
3257 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3260 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3261 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3264 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3265 report_file_error ("Cannot bind server socket", Qnil
);
3267 #ifdef HAVE_GETSOCKNAME
3268 if (EQ (service
, Qt
))
3270 struct sockaddr_in sa1
;
3271 int len1
= sizeof (sa1
);
3272 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3274 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3275 service
= make_number (ntohs (sa1
.sin_port
));
3276 contact
= Fplist_put (contact
, QCservice
, service
);
3281 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3282 report_file_error ("Cannot listen on server socket", Qnil
);
3290 /* This turns off all alarm-based interrupts; the
3291 bind_polling_period call above doesn't always turn all the
3292 short-interval ones off, especially if interrupt_input is
3295 It'd be nice to be able to control the connect timeout
3296 though. Would non-blocking connect calls be portable?
3298 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3300 turn_on_atimers (0);
3302 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3305 turn_on_atimers (1);
3307 if (ret
== 0 || xerrno
== EISCONN
)
3309 /* The unwind-protect will be discarded afterwards.
3310 Likewise for immediate_quit. */
3314 #ifdef NON_BLOCKING_CONNECT
3316 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3320 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3328 /* Discard the unwind protect closing S. */
3329 specpdl_ptr
= specpdl
+ count1
;
3333 if (xerrno
== EINTR
)
3339 #ifdef DATAGRAM_SOCKETS
3340 if (socktype
== SOCK_DGRAM
)
3342 if (datagram_address
[s
].sa
)
3344 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3345 datagram_address
[s
].len
= lres
->ai_addrlen
;
3349 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3350 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3353 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3354 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3355 conv_lisp_to_sockaddr (rfamily
, remote
,
3356 datagram_address
[s
].sa
, rlen
);
3360 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3363 contact
= Fplist_put (contact
, QCaddress
,
3364 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3365 #ifdef HAVE_GETSOCKNAME
3368 struct sockaddr_in sa1
;
3369 int len1
= sizeof (sa1
);
3370 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3371 contact
= Fplist_put (contact
, QClocal
,
3372 conv_sockaddr_to_lisp (&sa1
, len1
));
3379 #ifdef HAVE_GETADDRINFO
3388 /* Discard the unwind protect for closing S, if any. */
3389 specpdl_ptr
= specpdl
+ count1
;
3391 /* Unwind bind_polling_period and request_sigio. */
3392 unbind_to (count
, Qnil
);
3396 /* If non-blocking got this far - and failed - assume non-blocking is
3397 not supported after all. This is probably a wrong assumption, but
3398 the normal blocking calls to open-network-stream handles this error
3400 if (is_non_blocking_client
)
3405 report_file_error ("make server process failed", contact
);
3407 report_file_error ("make client process failed", contact
);
3410 #endif /* not TERM */
3416 buffer
= Fget_buffer_create (buffer
);
3417 proc
= make_process (name
);
3419 chan_process
[inch
] = proc
;
3422 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3425 fcntl (inch
, F_SETFL
, O_NDELAY
);
3429 p
= XPROCESS (proc
);
3431 p
->childp
= contact
;
3432 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3435 p
->sentinel
= sentinel
;
3437 p
->filter_multibyte
= !NILP (buffer_defaults
.enable_multibyte_characters
);
3438 /* Override the above only if :filter-multibyte is specified. */
3439 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3440 p
->filter_multibyte
= !NILP (Fplist_get (contact
, QCfilter_multibyte
));
3441 p
->log
= Fplist_get (contact
, QClog
);
3442 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3443 p
->kill_without_query
= 1;
3444 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3449 if (is_server
&& socktype
== SOCK_STREAM
)
3450 p
->status
= Qlisten
;
3452 /* Make the process marker point into the process buffer (if any). */
3453 if (BUFFERP (buffer
))
3454 set_marker_both (p
->mark
, buffer
,
3455 BUF_ZV (XBUFFER (buffer
)),
3456 BUF_ZV_BYTE (XBUFFER (buffer
)));
3458 #ifdef NON_BLOCKING_CONNECT
3459 if (is_non_blocking_client
)
3461 /* We may get here if connect did succeed immediately. However,
3462 in that case, we still need to signal this like a non-blocking
3464 p
->status
= Qconnect
;
3465 if (!FD_ISSET (inch
, &connect_wait_mask
))
3467 FD_SET (inch
, &connect_wait_mask
);
3468 num_pending_connects
++;
3473 /* A server may have a client filter setting of Qt, but it must
3474 still listen for incoming connects unless it is stopped. */
3475 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3476 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3478 FD_SET (inch
, &input_wait_mask
);
3479 FD_SET (inch
, &non_keyboard_wait_mask
);
3482 if (inch
> max_process_desc
)
3483 max_process_desc
= inch
;
3485 tem
= Fplist_member (contact
, QCcoding
);
3486 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3487 tem
= Qnil
; /* No error message (too late!). */
3490 /* Setup coding systems for communicating with the network stream. */
3491 struct gcpro gcpro1
;
3492 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3493 Lisp_Object coding_systems
= Qt
;
3494 Lisp_Object args
[5], val
;
3498 val
= XCAR (XCDR (tem
));
3502 else if (!NILP (Vcoding_system_for_read
))
3503 val
= Vcoding_system_for_read
;
3504 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3505 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3506 /* We dare not decode end-of-line format by setting VAL to
3507 Qraw_text, because the existing Emacs Lisp libraries
3508 assume that they receive bare code including a sequene of
3513 if (NILP (host
) || NILP (service
))
3514 coding_systems
= Qnil
;
3517 args
[0] = Qopen_network_stream
, args
[1] = name
,
3518 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3520 coding_systems
= Ffind_operation_coding_system (5, args
);
3523 if (CONSP (coding_systems
))
3524 val
= XCAR (coding_systems
);
3525 else if (CONSP (Vdefault_process_coding_system
))
3526 val
= XCAR (Vdefault_process_coding_system
);
3530 p
->decode_coding_system
= val
;
3534 val
= XCAR (XCDR (tem
));
3538 else if (!NILP (Vcoding_system_for_write
))
3539 val
= Vcoding_system_for_write
;
3540 else if (NILP (current_buffer
->enable_multibyte_characters
))
3544 if (EQ (coding_systems
, Qt
))
3546 if (NILP (host
) || NILP (service
))
3547 coding_systems
= Qnil
;
3550 args
[0] = Qopen_network_stream
, args
[1] = name
,
3551 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3553 coding_systems
= Ffind_operation_coding_system (5, args
);
3557 if (CONSP (coding_systems
))
3558 val
= XCDR (coding_systems
);
3559 else if (CONSP (Vdefault_process_coding_system
))
3560 val
= XCDR (Vdefault_process_coding_system
);
3564 p
->encode_coding_system
= val
;
3566 setup_process_coding_systems (proc
);
3568 p
->decoding_buf
= make_uninit_string (0);
3569 p
->decoding_carryover
= 0;
3570 p
->encoding_buf
= make_uninit_string (0);
3572 p
->inherit_coding_system_flag
3573 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3578 #endif /* HAVE_SOCKETS */
3581 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3584 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3585 doc
: /* Return an alist of all network interfaces and their network address.
3586 Each element is a cons, the car of which is a string containing the
3587 interface name, and the cdr is the network address in internal
3588 format; see the description of ADDRESS in `make-network-process'. */)
3591 struct ifconf ifconf
;
3592 struct ifreq
*ifreqs
= NULL
;
3597 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3603 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3604 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3611 ifconf
.ifc_len
= buf_size
;
3612 ifconf
.ifc_req
= ifreqs
;
3613 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3619 if (ifconf
.ifc_len
== buf_size
)
3623 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3626 while (--ifaces
>= 0)
3628 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3629 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3630 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3632 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3633 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3634 res
= Fcons (Fcons (build_string (namebuf
),
3635 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3636 sizeof (struct sockaddr
))),
3642 #endif /* SIOCGIFCONF */
3644 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3651 static struct ifflag_def ifflag_table
[] = {
3655 #ifdef IFF_BROADCAST
3656 { IFF_BROADCAST
, "broadcast" },
3659 { IFF_DEBUG
, "debug" },
3662 { IFF_LOOPBACK
, "loopback" },
3664 #ifdef IFF_POINTOPOINT
3665 { IFF_POINTOPOINT
, "pointopoint" },
3668 { IFF_RUNNING
, "running" },
3671 { IFF_NOARP
, "noarp" },
3674 { IFF_PROMISC
, "promisc" },
3676 #ifdef IFF_NOTRAILERS
3677 { IFF_NOTRAILERS
, "notrailers" },
3680 { IFF_ALLMULTI
, "allmulti" },
3683 { IFF_MASTER
, "master" },
3686 { IFF_SLAVE
, "slave" },
3688 #ifdef IFF_MULTICAST
3689 { IFF_MULTICAST
, "multicast" },
3692 { IFF_PORTSEL
, "portsel" },
3694 #ifdef IFF_AUTOMEDIA
3695 { IFF_AUTOMEDIA
, "automedia" },
3698 { IFF_DYNAMIC
, "dynamic" },
3701 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3704 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3707 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3710 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3713 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3718 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3719 doc
: /* Return information about network interface named IFNAME.
3720 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3721 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3722 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3723 FLAGS is the current flags of the interface. */)
3728 Lisp_Object res
= Qnil
;
3733 CHECK_STRING (ifname
);
3735 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3736 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3738 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3743 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3744 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3746 int flags
= rq
.ifr_flags
;
3747 struct ifflag_def
*fp
;
3751 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3753 if (flags
& fp
->flag_bit
)
3755 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3756 flags
-= fp
->flag_bit
;
3759 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3761 if (flags
& (1 << fnum
))
3763 elt
= Fcons (make_number (fnum
), elt
);
3768 res
= Fcons (elt
, res
);
3771 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3772 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3774 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3775 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3779 for (n
= 0; n
< 6; n
++)
3780 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3781 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3784 res
= Fcons (elt
, res
);
3787 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3788 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3791 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3792 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3794 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3798 res
= Fcons (elt
, res
);
3801 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3802 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3805 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3808 res
= Fcons (elt
, res
);
3811 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3812 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3815 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3818 res
= Fcons (elt
, res
);
3822 return any
? res
: Qnil
;
3825 #endif /* HAVE_SOCKETS */
3827 /* Turn off input and output for process PROC. */
3830 deactivate_process (proc
)
3833 register int inchannel
, outchannel
;
3834 register struct Lisp_Process
*p
= XPROCESS (proc
);
3836 inchannel
= p
->infd
;
3837 outchannel
= p
->outfd
;
3839 #ifdef ADAPTIVE_READ_BUFFERING
3840 if (p
->read_output_delay
> 0)
3842 if (--process_output_delay_count
< 0)
3843 process_output_delay_count
= 0;
3844 p
->read_output_delay
= 0;
3845 p
->read_output_skip
= 0;
3851 /* Beware SIGCHLD hereabouts. */
3852 flush_pending_output (inchannel
);
3855 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3856 sys$
dassgn (outchannel
);
3857 vs
= get_vms_process_pointer (p
->pid
);
3859 give_back_vms_process_stuff (vs
);
3862 emacs_close (inchannel
);
3863 if (outchannel
>= 0 && outchannel
!= inchannel
)
3864 emacs_close (outchannel
);
3869 #ifdef DATAGRAM_SOCKETS
3870 if (DATAGRAM_CHAN_P (inchannel
))
3872 xfree (datagram_address
[inchannel
].sa
);
3873 datagram_address
[inchannel
].sa
= 0;
3874 datagram_address
[inchannel
].len
= 0;
3877 chan_process
[inchannel
] = Qnil
;
3878 FD_CLR (inchannel
, &input_wait_mask
);
3879 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3880 #ifdef NON_BLOCKING_CONNECT
3881 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3883 FD_CLR (inchannel
, &connect_wait_mask
);
3884 if (--num_pending_connects
< 0)
3888 if (inchannel
== max_process_desc
)
3891 /* We just closed the highest-numbered process input descriptor,
3892 so recompute the highest-numbered one now. */
3893 max_process_desc
= 0;
3894 for (i
= 0; i
< MAXDESC
; i
++)
3895 if (!NILP (chan_process
[i
]))
3896 max_process_desc
= i
;
3901 /* Close all descriptors currently in use for communication
3902 with subprocess. This is used in a newly-forked subprocess
3903 to get rid of irrelevant descriptors. */
3906 close_process_descs ()
3910 for (i
= 0; i
< MAXDESC
; i
++)
3912 Lisp_Object process
;
3913 process
= chan_process
[i
];
3914 if (!NILP (process
))
3916 int in
= XPROCESS (process
)->infd
;
3917 int out
= XPROCESS (process
)->outfd
;
3920 if (out
>= 0 && in
!= out
)
3927 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3929 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3930 It is read into the process' buffers or given to their filter functions.
3931 Non-nil arg PROCESS means do not return until some output has been received
3934 Non-nil second arg SECONDS and third arg MILLISEC are number of
3935 seconds and milliseconds to wait; return after that much time whether
3936 or not there is input. If SECONDS is a floating point number,
3937 it specifies a fractional number of seconds to wait.
3939 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3940 from PROCESS, suspending reading output from other processes.
3941 If JUST-THIS-ONE is an integer, don't run any timers either.
3942 Return non-nil if we received any output before the timeout expired. */)
3943 (process
, seconds
, millisec
, just_this_one
)
3944 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3946 int secs
, usecs
= 0;
3948 if (! NILP (process
))
3949 CHECK_PROCESS (process
);
3951 just_this_one
= Qnil
;
3953 if (!NILP (seconds
))
3955 if (INTEGERP (seconds
))
3956 secs
= XINT (seconds
);
3957 else if (FLOATP (seconds
))
3959 double timeout
= XFLOAT_DATA (seconds
);
3960 secs
= (int) timeout
;
3961 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3964 wrong_type_argument (Qnumberp
, seconds
);
3966 if (INTEGERP (millisec
))
3969 usecs
+= XINT (millisec
) * 1000;
3970 carry
= usecs
/ 1000000;
3972 if ((usecs
-= carry
* 1000000) < 0)
3979 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3980 secs
= -1, usecs
= 0;
3983 secs
= NILP (process
) ? -1 : 0;
3986 (wait_reading_process_output (secs
, usecs
, 0, 0,
3988 !NILP (process
) ? XPROCESS (process
) : NULL
,
3989 NILP (just_this_one
) ? 0 :
3990 !INTEGERP (just_this_one
) ? 1 : -1)
3994 /* Accept a connection for server process SERVER on CHANNEL. */
3996 static int connect_counter
= 0;
3999 server_accept_connection (server
, channel
)
4003 Lisp_Object proc
, caller
, name
, buffer
;
4004 Lisp_Object contact
, host
, service
;
4005 struct Lisp_Process
*ps
= XPROCESS (server
);
4006 struct Lisp_Process
*p
;
4010 struct sockaddr_in in
;
4012 struct sockaddr_in6 in6
;
4014 #ifdef HAVE_LOCAL_SOCKETS
4015 struct sockaddr_un un
;
4018 int len
= sizeof saddr
;
4020 s
= accept (channel
, &saddr
.sa
, &len
);
4029 if (code
== EWOULDBLOCK
)
4033 if (!NILP (ps
->log
))
4034 call3 (ps
->log
, server
, Qnil
,
4035 concat3 (build_string ("accept failed with code"),
4036 Fnumber_to_string (make_number (code
)),
4037 build_string ("\n")));
4043 /* Setup a new process to handle the connection. */
4045 /* Generate a unique identification of the caller, and build contact
4046 information for this process. */
4049 switch (saddr
.sa
.sa_family
)
4053 Lisp_Object args
[5];
4054 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4055 args
[0] = build_string ("%d.%d.%d.%d");
4056 args
[1] = make_number (*ip
++);
4057 args
[2] = make_number (*ip
++);
4058 args
[3] = make_number (*ip
++);
4059 args
[4] = make_number (*ip
++);
4060 host
= Fformat (5, args
);
4061 service
= make_number (ntohs (saddr
.in
.sin_port
));
4063 args
[0] = build_string (" <%s:%d>");
4066 caller
= Fformat (3, args
);
4073 Lisp_Object args
[9];
4074 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4076 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4077 for (i
= 0; i
< 8; i
++)
4078 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4079 host
= Fformat (9, args
);
4080 service
= make_number (ntohs (saddr
.in
.sin_port
));
4082 args
[0] = build_string (" <[%s]:%d>");
4085 caller
= Fformat (3, args
);
4090 #ifdef HAVE_LOCAL_SOCKETS
4094 caller
= Fnumber_to_string (make_number (connect_counter
));
4095 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4099 /* Create a new buffer name for this process if it doesn't have a
4100 filter. The new buffer name is based on the buffer name or
4101 process name of the server process concatenated with the caller
4104 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4108 buffer
= ps
->buffer
;
4110 buffer
= Fbuffer_name (buffer
);
4115 buffer
= concat2 (buffer
, caller
);
4116 buffer
= Fget_buffer_create (buffer
);
4120 /* Generate a unique name for the new server process. Combine the
4121 server process name with the caller identification. */
4123 name
= concat2 (ps
->name
, caller
);
4124 proc
= make_process (name
);
4126 chan_process
[s
] = proc
;
4129 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4132 fcntl (s
, F_SETFL
, O_NDELAY
);
4136 p
= XPROCESS (proc
);
4138 /* Build new contact information for this setup. */
4139 contact
= Fcopy_sequence (ps
->childp
);
4140 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4141 contact
= Fplist_put (contact
, QChost
, host
);
4142 if (!NILP (service
))
4143 contact
= Fplist_put (contact
, QCservice
, service
);
4144 contact
= Fplist_put (contact
, QCremote
,
4145 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4146 #ifdef HAVE_GETSOCKNAME
4148 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4149 contact
= Fplist_put (contact
, QClocal
,
4150 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4153 p
->childp
= contact
;
4154 p
->plist
= Fcopy_sequence (ps
->plist
);
4157 p
->sentinel
= ps
->sentinel
;
4158 p
->filter
= ps
->filter
;
4165 /* Client processes for accepted connections are not stopped initially. */
4166 if (!EQ (p
->filter
, Qt
))
4168 FD_SET (s
, &input_wait_mask
);
4169 FD_SET (s
, &non_keyboard_wait_mask
);
4172 if (s
> max_process_desc
)
4173 max_process_desc
= s
;
4175 /* Setup coding system for new process based on server process.
4176 This seems to be the proper thing to do, as the coding system
4177 of the new process should reflect the settings at the time the
4178 server socket was opened; not the current settings. */
4180 p
->decode_coding_system
= ps
->decode_coding_system
;
4181 p
->encode_coding_system
= ps
->encode_coding_system
;
4182 setup_process_coding_systems (proc
);
4184 p
->decoding_buf
= make_uninit_string (0);
4185 p
->decoding_carryover
= 0;
4186 p
->encoding_buf
= make_uninit_string (0);
4188 p
->inherit_coding_system_flag
4189 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4191 if (!NILP (ps
->log
))
4192 call3 (ps
->log
, server
, proc
,
4193 concat3 (build_string ("accept from "),
4194 (STRINGP (host
) ? host
: build_string ("-")),
4195 build_string ("\n")));
4197 if (!NILP (p
->sentinel
))
4198 exec_sentinel (proc
,
4199 concat3 (build_string ("open from "),
4200 (STRINGP (host
) ? host
: build_string ("-")),
4201 build_string ("\n")));
4204 /* This variable is different from waiting_for_input in keyboard.c.
4205 It is used to communicate to a lisp process-filter/sentinel (via the
4206 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4207 for user-input when that process-filter was called.
4208 waiting_for_input cannot be used as that is by definition 0 when
4209 lisp code is being evalled.
4210 This is also used in record_asynch_buffer_change.
4211 For that purpose, this must be 0
4212 when not inside wait_reading_process_output. */
4213 static int waiting_for_user_input_p
;
4216 wait_reading_process_output_unwind (data
)
4219 waiting_for_user_input_p
= XINT (data
);
4223 /* This is here so breakpoints can be put on it. */
4225 wait_reading_process_output_1 ()
4229 /* Use a wrapper around select to work around a bug in gdb 5.3.
4230 Normally, the wrapper is optimzed away by inlining.
4232 If emacs is stopped inside select, the gdb backtrace doesn't
4233 show the function which called select, so it is practically
4234 impossible to step through wait_reading_process_output. */
4238 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4240 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4243 return select (n
, rfd
, wfd
, xfd
, tmo
);
4245 #define select select_wrapper
4248 /* Read and dispose of subprocess output while waiting for timeout to
4249 elapse and/or keyboard input to be available.
4252 timeout in seconds, or
4253 zero for no limit, or
4254 -1 means gobble data immediately available but don't wait for any.
4257 an additional duration to wait, measured in microseconds.
4258 If this is nonzero and time_limit is 0, then the timeout
4259 consists of MICROSECS only.
4261 READ_KBD is a lisp value:
4262 0 to ignore keyboard input, or
4263 1 to return when input is available, or
4264 -1 meaning caller will actually read the input, so don't throw to
4265 the quit handler, or
4267 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4268 output that arrives.
4270 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4271 (and gobble terminal input into the buffer if any arrives).
4273 If WAIT_PROC is specified, wait until something arrives from that
4274 process. The return value is true if we read some input from
4277 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4278 (suspending output from other processes). A negative value
4279 means don't run any timers either.
4281 If WAIT_PROC is specified, then the function returns true if we
4282 received input from that process before the timeout elapsed.
4283 Otherwise, return true if we received input from any process. */
4286 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4287 wait_for_cell
, wait_proc
, just_wait_proc
)
4288 int time_limit
, microsecs
, read_kbd
, do_display
;
4289 Lisp_Object wait_for_cell
;
4290 struct Lisp_Process
*wait_proc
;
4293 register int channel
, nfds
;
4294 SELECT_TYPE Available
;
4295 #ifdef NON_BLOCKING_CONNECT
4296 SELECT_TYPE Connecting
;
4299 int check_delay
, no_avail
;
4302 EMACS_TIME timeout
, end_time
;
4303 int wait_channel
= -1;
4304 int got_some_input
= 0;
4305 int count
= SPECPDL_INDEX ();
4307 FD_ZERO (&Available
);
4308 #ifdef NON_BLOCKING_CONNECT
4309 FD_ZERO (&Connecting
);
4312 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4313 if (wait_proc
!= NULL
)
4314 wait_channel
= wait_proc
->infd
;
4316 record_unwind_protect (wait_reading_process_output_unwind
,
4317 make_number (waiting_for_user_input_p
));
4318 waiting_for_user_input_p
= read_kbd
;
4320 /* Since we may need to wait several times,
4321 compute the absolute time to return at. */
4322 if (time_limit
|| microsecs
)
4324 EMACS_GET_TIME (end_time
);
4325 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4326 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4328 #ifdef POLL_INTERRUPTED_SYS_CALL
4329 /* AlainF 5-Jul-1996
4330 HP-UX 10.10 seem to have problems with signals coming in
4331 Causes "poll: interrupted system call" messages when Emacs is run
4333 Turn off periodic alarms (in case they are in use),
4334 and then turn off any other atimers. */
4336 turn_on_atimers (0);
4337 #endif /* POLL_INTERRUPTED_SYS_CALL */
4341 int timeout_reduced_for_timers
= 0;
4343 /* If calling from keyboard input, do not quit
4344 since we want to return C-g as an input character.
4345 Otherwise, do pending quit if requested. */
4349 else if (interrupt_input_pending
)
4350 handle_async_input ();
4353 /* Exit now if the cell we're waiting for became non-nil. */
4354 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4357 /* Compute time from now till when time limit is up */
4358 /* Exit if already run out */
4359 if (time_limit
== -1)
4361 /* -1 specified for timeout means
4362 gobble output available now
4363 but don't wait at all. */
4365 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4367 else if (time_limit
|| microsecs
)
4369 EMACS_GET_TIME (timeout
);
4370 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4371 if (EMACS_TIME_NEG_P (timeout
))
4376 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4379 /* Normally we run timers here.
4380 But not if wait_for_cell; in those cases,
4381 the wait is supposed to be short,
4382 and those callers cannot handle running arbitrary Lisp code here. */
4383 if (NILP (wait_for_cell
)
4384 && just_wait_proc
>= 0)
4386 EMACS_TIME timer_delay
;
4390 int old_timers_run
= timers_run
;
4391 struct buffer
*old_buffer
= current_buffer
;
4393 timer_delay
= timer_check (1);
4395 /* If a timer has run, this might have changed buffers
4396 an alike. Make read_key_sequence aware of that. */
4397 if (timers_run
!= old_timers_run
4398 && old_buffer
!= current_buffer
4399 && waiting_for_user_input_p
== -1)
4400 record_asynch_buffer_change ();
4402 if (timers_run
!= old_timers_run
&& do_display
)
4403 /* We must retry, since a timer may have requeued itself
4404 and that could alter the time_delay. */
4405 redisplay_preserve_echo_area (9);
4409 while (!detect_input_pending ());
4411 /* If there is unread keyboard input, also return. */
4413 && requeued_events_pending_p ())
4416 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4418 EMACS_TIME difference
;
4419 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4420 if (EMACS_TIME_NEG_P (difference
))
4422 timeout
= timer_delay
;
4423 timeout_reduced_for_timers
= 1;
4426 /* If time_limit is -1, we are not going to wait at all. */
4427 else if (time_limit
!= -1)
4429 /* This is so a breakpoint can be put here. */
4430 wait_reading_process_output_1 ();
4434 /* Cause C-g and alarm signals to take immediate action,
4435 and cause input available signals to zero out timeout.
4437 It is important that we do this before checking for process
4438 activity. If we get a SIGCHLD after the explicit checks for
4439 process activity, timeout is the only way we will know. */
4441 set_waiting_for_input (&timeout
);
4443 /* If status of something has changed, and no input is
4444 available, notify the user of the change right away. After
4445 this explicit check, we'll let the SIGCHLD handler zap
4446 timeout to get our attention. */
4447 if (update_tick
!= process_tick
&& do_display
)
4450 #ifdef NON_BLOCKING_CONNECT
4454 Atemp
= input_wait_mask
;
4456 /* On Mac OS X 10.0, the SELECT system call always says input is
4457 present (for reading) at stdin, even when none is. This
4458 causes the call to SELECT below to return 1 and
4459 status_notify not to be called. As a result output of
4460 subprocesses are incorrectly discarded.
4464 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4466 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4467 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4470 #ifdef NON_BLOCKING_CONNECT
4471 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4475 (SELECT_TYPE
*)0, &timeout
)
4478 /* It's okay for us to do this and then continue with
4479 the loop, since timeout has already been zeroed out. */
4480 clear_waiting_for_input ();
4481 status_notify (NULL
);
4485 /* Don't wait for output from a non-running process. Just
4486 read whatever data has already been received. */
4487 if (wait_proc
&& wait_proc
->raw_status_new
)
4488 update_status (wait_proc
);
4490 && ! EQ (wait_proc
->status
, Qrun
)
4491 && ! EQ (wait_proc
->status
, Qconnect
))
4493 int nread
, total_nread
= 0;
4495 clear_waiting_for_input ();
4496 XSETPROCESS (proc
, wait_proc
);
4498 /* Read data from the process, until we exhaust it. */
4499 while (wait_proc
->infd
>= 0)
4501 nread
= read_process_output (proc
, wait_proc
->infd
);
4507 total_nread
+= nread
;
4509 else if (nread
== -1 && EIO
== errno
)
4513 else if (nread
== -1 && EAGAIN
== errno
)
4517 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4521 if (total_nread
> 0 && do_display
)
4522 redisplay_preserve_echo_area (10);
4527 /* Wait till there is something to do */
4529 if (wait_proc
&& just_wait_proc
)
4531 if (wait_proc
->infd
< 0) /* Terminated */
4533 FD_SET (wait_proc
->infd
, &Available
);
4535 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4537 else if (!NILP (wait_for_cell
))
4539 Available
= non_process_wait_mask
;
4541 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4546 Available
= non_keyboard_wait_mask
;
4548 Available
= input_wait_mask
;
4549 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4550 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4553 /* If frame size has changed or the window is newly mapped,
4554 redisplay now, before we start to wait. There is a race
4555 condition here; if a SIGIO arrives between now and the select
4556 and indicates that a frame is trashed, the select may block
4557 displaying a trashed screen. */
4558 if (frame_garbaged
&& do_display
)
4560 clear_waiting_for_input ();
4561 redisplay_preserve_echo_area (11);
4563 set_waiting_for_input (&timeout
);
4567 if (read_kbd
&& detect_input_pending ())
4574 #ifdef NON_BLOCKING_CONNECT
4576 Connecting
= connect_wait_mask
;
4579 #ifdef ADAPTIVE_READ_BUFFERING
4580 /* Set the timeout for adaptive read buffering if any
4581 process has non-zero read_output_skip and non-zero
4582 read_output_delay, and we are not reading output for a
4583 specific wait_channel. It is not executed if
4584 Vprocess_adaptive_read_buffering is nil. */
4585 if (process_output_skip
&& check_delay
> 0)
4587 int usecs
= EMACS_USECS (timeout
);
4588 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4589 usecs
= READ_OUTPUT_DELAY_MAX
;
4590 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4592 proc
= chan_process
[channel
];
4595 /* Find minimum non-zero read_output_delay among the
4596 processes with non-zero read_output_skip. */
4597 if (XPROCESS (proc
)->read_output_delay
> 0)
4600 if (!XPROCESS (proc
)->read_output_skip
)
4602 FD_CLR (channel
, &Available
);
4603 XPROCESS (proc
)->read_output_skip
= 0;
4604 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4605 usecs
= XPROCESS (proc
)->read_output_delay
;
4608 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4609 process_output_skip
= 0;
4613 nfds
= select (max (max (max_process_desc
, max_keyboard_desc
),
4616 #ifdef NON_BLOCKING_CONNECT
4617 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4621 (SELECT_TYPE
*)0, &timeout
);
4626 /* Make C-g and alarm signals set flags again */
4627 clear_waiting_for_input ();
4629 /* If we woke up due to SIGWINCH, actually change size now. */
4630 do_pending_window_change (0);
4632 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4633 /* We wanted the full specified time, so return now. */
4637 if (xerrno
== EINTR
)
4640 /* Ultrix select seems to return ENOMEM when it is
4641 interrupted. Treat it just like EINTR. Bleah. Note
4642 that we want to test for the "ultrix" CPP symbol, not
4643 "__ultrix__"; the latter is only defined under GCC, but
4644 not by DEC's bundled CC. -JimB */
4645 else if (xerrno
== ENOMEM
)
4649 /* This happens for no known reason on ALLIANT.
4650 I am guessing that this is the right response. -- RMS. */
4651 else if (xerrno
== EFAULT
)
4654 else if (xerrno
== EBADF
)
4657 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4658 the child's closure of the pts gives the parent a SIGHUP, and
4659 the ptc file descriptor is automatically closed,
4660 yielding EBADF here or at select() call above.
4661 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4662 in m/ibmrt-aix.h), and here we just ignore the select error.
4663 Cleanup occurs c/o status_notify after SIGCLD. */
4664 no_avail
= 1; /* Cannot depend on values returned */
4670 error ("select error: %s", emacs_strerror (xerrno
));
4675 FD_ZERO (&Available
);
4676 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4679 #if defined(sun) && !defined(USG5_4)
4680 if (nfds
> 0 && keyboard_bit_set (&Available
)
4682 /* System sometimes fails to deliver SIGIO.
4684 David J. Mackenzie says that Emacs doesn't compile under
4685 Solaris if this code is enabled, thus the USG5_4 in the CPP
4686 conditional. "I haven't noticed any ill effects so far.
4687 If you find a Solaris expert somewhere, they might know
4689 kill (getpid (), SIGIO
);
4692 #if 0 /* When polling is used, interrupt_input is 0,
4693 so get_input_pending should read the input.
4694 So this should not be needed. */
4695 /* If we are using polling for input,
4696 and we see input available, make it get read now.
4697 Otherwise it might not actually get read for a second.
4698 And on hpux, since we turn off polling in wait_reading_process_output,
4699 it might never get read at all if we don't spend much time
4700 outside of wait_reading_process_output. */
4701 if (read_kbd
&& interrupt_input
4702 && keyboard_bit_set (&Available
)
4703 && input_polling_used ())
4704 kill (getpid (), SIGALRM
);
4707 /* Check for keyboard input */
4708 /* If there is any, return immediately
4709 to give it higher priority than subprocesses */
4713 int old_timers_run
= timers_run
;
4714 struct buffer
*old_buffer
= current_buffer
;
4717 if (detect_input_pending_run_timers (do_display
))
4719 swallow_events (do_display
);
4720 if (detect_input_pending_run_timers (do_display
))
4724 /* If a timer has run, this might have changed buffers
4725 an alike. Make read_key_sequence aware of that. */
4726 if (timers_run
!= old_timers_run
4727 && waiting_for_user_input_p
== -1
4728 && old_buffer
!= current_buffer
)
4729 record_asynch_buffer_change ();
4735 /* If there is unread keyboard input, also return. */
4737 && requeued_events_pending_p ())
4740 /* If we are not checking for keyboard input now,
4741 do process events (but don't run any timers).
4742 This is so that X events will be processed.
4743 Otherwise they may have to wait until polling takes place.
4744 That would causes delays in pasting selections, for example.
4746 (We used to do this only if wait_for_cell.) */
4747 if (read_kbd
== 0 && detect_input_pending ())
4749 swallow_events (do_display
);
4750 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4751 if (detect_input_pending ())
4756 /* Exit now if the cell we're waiting for became non-nil. */
4757 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4761 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4762 go read it. This can happen with X on BSD after logging out.
4763 In that case, there really is no input and no SIGIO,
4764 but select says there is input. */
4766 if (read_kbd
&& interrupt_input
4767 && keyboard_bit_set (&Available
) && ! noninteractive
)
4768 kill (getpid (), SIGIO
);
4772 got_some_input
|= nfds
> 0;
4774 /* If checking input just got us a size-change event from X,
4775 obey it now if we should. */
4776 if (read_kbd
|| ! NILP (wait_for_cell
))
4777 do_pending_window_change (0);
4779 /* Check for data from a process. */
4780 if (no_avail
|| nfds
== 0)
4783 /* Really FIRST_PROC_DESC should be 0 on Unix,
4784 but this is safer in the short run. */
4785 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4787 if (FD_ISSET (channel
, &Available
)
4788 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4792 /* If waiting for this channel, arrange to return as
4793 soon as no more input to be processed. No more
4795 if (wait_channel
== channel
)
4801 proc
= chan_process
[channel
];
4805 /* If this is a server stream socket, accept connection. */
4806 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4808 server_accept_connection (proc
, channel
);
4812 /* Read data from the process, starting with our
4813 buffered-ahead character if we have one. */
4815 nread
= read_process_output (proc
, channel
);
4818 /* Since read_process_output can run a filter,
4819 which can call accept-process-output,
4820 don't try to read from any other processes
4821 before doing the select again. */
4822 FD_ZERO (&Available
);
4825 redisplay_preserve_echo_area (12);
4828 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4831 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4832 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4834 else if (nread
== -1 && errno
== EAGAIN
)
4838 else if (nread
== -1 && errno
== EAGAIN
)
4840 /* Note that we cannot distinguish between no input
4841 available now and a closed pipe.
4842 With luck, a closed pipe will be accompanied by
4843 subprocess termination and SIGCHLD. */
4844 else if (nread
== 0 && !NETCONN_P (proc
))
4846 #endif /* O_NDELAY */
4847 #endif /* O_NONBLOCK */
4849 /* On some OSs with ptys, when the process on one end of
4850 a pty exits, the other end gets an error reading with
4851 errno = EIO instead of getting an EOF (0 bytes read).
4852 Therefore, if we get an error reading and errno =
4853 EIO, just continue, because the child process has
4854 exited and should clean itself up soon (e.g. when we
4857 However, it has been known to happen that the SIGCHLD
4858 got lost. So raise the signal again just in case.
4860 else if (nread
== -1 && errno
== EIO
)
4862 /* Clear the descriptor now, so we only raise the signal once. */
4863 FD_CLR (channel
, &input_wait_mask
);
4864 FD_CLR (channel
, &non_keyboard_wait_mask
);
4866 kill (getpid (), SIGCHLD
);
4868 #endif /* HAVE_PTYS */
4869 /* If we can detect process termination, don't consider the process
4870 gone just because its pipe is closed. */
4872 else if (nread
== 0 && !NETCONN_P (proc
))
4877 /* Preserve status of processes already terminated. */
4878 XPROCESS (proc
)->tick
= ++process_tick
;
4879 deactivate_process (proc
);
4880 if (XPROCESS (proc
)->raw_status_new
)
4881 update_status (XPROCESS (proc
));
4882 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4883 XPROCESS (proc
)->status
4884 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4887 #ifdef NON_BLOCKING_CONNECT
4888 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4889 && FD_ISSET (channel
, &connect_wait_mask
))
4891 struct Lisp_Process
*p
;
4893 FD_CLR (channel
, &connect_wait_mask
);
4894 if (--num_pending_connects
< 0)
4897 proc
= chan_process
[channel
];
4901 p
= XPROCESS (proc
);
4904 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4905 So only use it on systems where it is known to work. */
4907 int xlen
= sizeof(xerrno
);
4908 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4913 struct sockaddr pname
;
4914 int pnamelen
= sizeof(pname
);
4916 /* If connection failed, getpeername will fail. */
4918 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4920 /* Obtain connect failure code through error slippage. */
4923 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4930 p
->tick
= ++process_tick
;
4931 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4932 deactivate_process (proc
);
4937 /* Execute the sentinel here. If we had relied on
4938 status_notify to do it later, it will read input
4939 from the process before calling the sentinel. */
4940 exec_sentinel (proc
, build_string ("open\n"));
4941 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4943 FD_SET (p
->infd
, &input_wait_mask
);
4944 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4948 #endif /* NON_BLOCKING_CONNECT */
4949 } /* end for each file descriptor */
4950 } /* end while exit conditions not met */
4952 unbind_to (count
, Qnil
);
4954 /* If calling from keyboard input, do not quit
4955 since we want to return C-g as an input character.
4956 Otherwise, do pending quit if requested. */
4959 /* Prevent input_pending from remaining set if we quit. */
4960 clear_input_pending ();
4963 #ifdef POLL_INTERRUPTED_SYS_CALL
4964 /* AlainF 5-Jul-1996
4965 HP-UX 10.10 seems to have problems with signals coming in
4966 Causes "poll: interrupted system call" messages when Emacs is run
4968 Turn periodic alarms back on */
4970 #endif /* POLL_INTERRUPTED_SYS_CALL */
4972 return got_some_input
;
4975 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4978 read_process_output_call (fun_and_args
)
4979 Lisp_Object fun_and_args
;
4981 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4985 read_process_output_error_handler (error
)
4988 cmd_error_internal (error
, "error in process filter: ");
4990 update_echo_area ();
4991 Fsleep_for (make_number (2), Qnil
);
4995 /* Read pending output from the process channel,
4996 starting with our buffered-ahead character if we have one.
4997 Yield number of decoded characters read.
4999 This function reads at most 4096 characters.
5000 If you want to read all available subprocess output,
5001 you must call it repeatedly until it returns zero.
5003 The characters read are decoded according to PROC's coding-system
5007 read_process_output (proc
, channel
)
5009 register int channel
;
5011 register int nbytes
;
5013 register Lisp_Object outstream
;
5014 register struct buffer
*old
= current_buffer
;
5015 register struct Lisp_Process
*p
= XPROCESS (proc
);
5016 register int opoint
;
5017 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5018 int carryover
= p
->decoding_carryover
;
5022 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5024 vs
= get_vms_process_pointer (p
->pid
);
5028 return (0); /* Really weird if it does this */
5029 if (!(vs
->iosb
[0] & 1))
5030 return -1; /* I/O error */
5033 error ("Could not get VMS process pointer");
5034 chars
= vs
->inputBuffer
;
5035 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
5038 start_vms_process_read (vs
); /* Crank up the next read on the process */
5039 return 1; /* Nothing worth printing, say we got 1 */
5043 /* The data carried over in the previous decoding (which are at
5044 the tail of decoding buffer) should be prepended to the new
5045 data read to decode all together. */
5046 chars
= (char *) alloca (nbytes
+ carryover
);
5047 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5048 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5052 chars
= (char *) alloca (carryover
+ readmax
);
5054 /* See the comment above. */
5055 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5057 #ifdef DATAGRAM_SOCKETS
5058 /* We have a working select, so proc_buffered_char is always -1. */
5059 if (DATAGRAM_CHAN_P (channel
))
5061 int len
= datagram_address
[channel
].len
;
5062 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5063 0, datagram_address
[channel
].sa
, &len
);
5067 if (proc_buffered_char
[channel
] < 0)
5069 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5070 #ifdef ADAPTIVE_READ_BUFFERING
5071 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5073 int delay
= p
->read_output_delay
;
5076 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5079 process_output_delay_count
++;
5080 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5083 else if (delay
> 0 && (nbytes
== readmax
))
5085 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5087 process_output_delay_count
--;
5089 p
->read_output_delay
= delay
;
5092 p
->read_output_skip
= 1;
5093 process_output_skip
= 1;
5100 chars
[carryover
] = proc_buffered_char
[channel
];
5101 proc_buffered_char
[channel
] = -1;
5102 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5106 nbytes
= nbytes
+ 1;
5108 #endif /* not VMS */
5110 p
->decoding_carryover
= 0;
5112 /* At this point, NBYTES holds number of bytes just received
5113 (including the one in proc_buffered_char[channel]). */
5116 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5118 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5121 /* Now set NBYTES how many bytes we must decode. */
5122 nbytes
+= carryover
;
5124 /* Read and dispose of the process output. */
5125 outstream
= p
->filter
;
5126 if (!NILP (outstream
))
5128 /* We inhibit quit here instead of just catching it so that
5129 hitting ^G when a filter happens to be running won't screw
5131 int count
= SPECPDL_INDEX ();
5132 Lisp_Object odeactivate
;
5133 Lisp_Object obuffer
, okeymap
;
5135 int outer_running_asynch_code
= running_asynch_code
;
5136 int waiting
= waiting_for_user_input_p
;
5138 /* No need to gcpro these, because all we do with them later
5139 is test them for EQness, and none of them should be a string. */
5140 odeactivate
= Vdeactivate_mark
;
5141 XSETBUFFER (obuffer
, current_buffer
);
5142 okeymap
= current_buffer
->keymap
;
5144 specbind (Qinhibit_quit
, Qt
);
5145 specbind (Qlast_nonmenu_event
, Qt
);
5147 /* In case we get recursively called,
5148 and we already saved the match data nonrecursively,
5149 save the same match data in safely recursive fashion. */
5150 if (outer_running_asynch_code
)
5153 /* Don't clobber the CURRENT match data, either! */
5154 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5155 restore_search_regs ();
5156 record_unwind_save_match_data ();
5157 Fset_match_data (tem
, Qt
);
5160 /* For speed, if a search happens within this code,
5161 save the match data in a special nonrecursive fashion. */
5162 running_asynch_code
= 1;
5164 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5165 text
= coding
->dst_object
;
5166 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5167 /* A new coding system might be found. */
5168 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5170 p
->decode_coding_system
= Vlast_coding_system_used
;
5172 /* Don't call setup_coding_system for
5173 proc_decode_coding_system[channel] here. It is done in
5174 detect_coding called via decode_coding above. */
5176 /* If a coding system for encoding is not yet decided, we set
5177 it as the same as coding-system for decoding.
5179 But, before doing that we must check if
5180 proc_encode_coding_system[p->outfd] surely points to a
5181 valid memory because p->outfd will be changed once EOF is
5182 sent to the process. */
5183 if (NILP (p
->encode_coding_system
)
5184 && proc_encode_coding_system
[p
->outfd
])
5186 p
->encode_coding_system
5187 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5188 setup_coding_system (p
->encode_coding_system
,
5189 proc_encode_coding_system
[p
->outfd
]);
5193 if (coding
->carryover_bytes
> 0)
5195 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5196 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5197 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5198 coding
->carryover_bytes
);
5199 p
->decoding_carryover
= coding
->carryover_bytes
;
5201 /* Adjust the multibyteness of TEXT to that of the filter. */
5202 if (!p
->filter_multibyte
!= !STRING_MULTIBYTE (text
))
5203 text
= (STRING_MULTIBYTE (text
)
5204 ? Fstring_as_unibyte (text
)
5205 : Fstring_to_multibyte (text
));
5206 if (SBYTES (text
) > 0)
5207 internal_condition_case_1 (read_process_output_call
,
5209 Fcons (proc
, Fcons (text
, Qnil
))),
5210 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5211 read_process_output_error_handler
);
5213 /* If we saved the match data nonrecursively, restore it now. */
5214 restore_search_regs ();
5215 running_asynch_code
= outer_running_asynch_code
;
5217 /* Handling the process output should not deactivate the mark. */
5218 Vdeactivate_mark
= odeactivate
;
5220 /* Restore waiting_for_user_input_p as it was
5221 when we were called, in case the filter clobbered it. */
5222 waiting_for_user_input_p
= waiting
;
5224 #if 0 /* Call record_asynch_buffer_change unconditionally,
5225 because we might have changed minor modes or other things
5226 that affect key bindings. */
5227 if (! EQ (Fcurrent_buffer (), obuffer
)
5228 || ! EQ (current_buffer
->keymap
, okeymap
))
5230 /* But do it only if the caller is actually going to read events.
5231 Otherwise there's no need to make him wake up, and it could
5232 cause trouble (for example it would make sit_for return). */
5233 if (waiting_for_user_input_p
== -1)
5234 record_asynch_buffer_change ();
5237 start_vms_process_read (vs
);
5239 unbind_to (count
, Qnil
);
5243 /* If no filter, write into buffer if it isn't dead. */
5244 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5246 Lisp_Object old_read_only
;
5247 int old_begv
, old_zv
;
5248 int old_begv_byte
, old_zv_byte
;
5249 Lisp_Object odeactivate
;
5250 int before
, before_byte
;
5255 odeactivate
= Vdeactivate_mark
;
5257 Fset_buffer (p
->buffer
);
5259 opoint_byte
= PT_BYTE
;
5260 old_read_only
= current_buffer
->read_only
;
5263 old_begv_byte
= BEGV_BYTE
;
5264 old_zv_byte
= ZV_BYTE
;
5266 current_buffer
->read_only
= Qnil
;
5268 /* Insert new output into buffer
5269 at the current end-of-output marker,
5270 thus preserving logical ordering of input and output. */
5271 if (XMARKER (p
->mark
)->buffer
)
5272 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5273 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5276 SET_PT_BOTH (ZV
, ZV_BYTE
);
5278 before_byte
= PT_BYTE
;
5280 /* If the output marker is outside of the visible region, save
5281 the restriction and widen. */
5282 if (! (BEGV
<= PT
&& PT
<= ZV
))
5285 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5286 text
= coding
->dst_object
;
5287 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5288 /* A new coding system might be found. See the comment in the
5289 similar code in the previous `if' block. */
5290 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5292 p
->decode_coding_system
= Vlast_coding_system_used
;
5293 if (NILP (p
->encode_coding_system
)
5294 && proc_encode_coding_system
[p
->outfd
])
5296 p
->encode_coding_system
5297 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5298 setup_coding_system (p
->encode_coding_system
,
5299 proc_encode_coding_system
[p
->outfd
]);
5302 if (coding
->carryover_bytes
> 0)
5304 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5305 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5306 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5307 coding
->carryover_bytes
);
5308 p
->decoding_carryover
= coding
->carryover_bytes
;
5310 /* Adjust the multibyteness of TEXT to that of the buffer. */
5311 if (NILP (current_buffer
->enable_multibyte_characters
)
5312 != ! STRING_MULTIBYTE (text
))
5313 text
= (STRING_MULTIBYTE (text
)
5314 ? Fstring_as_unibyte (text
)
5315 : Fstring_to_multibyte (text
));
5316 /* Insert before markers in case we are inserting where
5317 the buffer's mark is, and the user's next command is Meta-y. */
5318 insert_from_string_before_markers (text
, 0, 0,
5319 SCHARS (text
), SBYTES (text
), 0);
5321 /* Make sure the process marker's position is valid when the
5322 process buffer is changed in the signal_after_change above.
5323 W3 is known to do that. */
5324 if (BUFFERP (p
->buffer
)
5325 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5326 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5328 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5330 update_mode_lines
++;
5332 /* Make sure opoint and the old restrictions
5333 float ahead of any new text just as point would. */
5334 if (opoint
>= before
)
5336 opoint
+= PT
- before
;
5337 opoint_byte
+= PT_BYTE
- before_byte
;
5339 if (old_begv
> before
)
5341 old_begv
+= PT
- before
;
5342 old_begv_byte
+= PT_BYTE
- before_byte
;
5344 if (old_zv
>= before
)
5346 old_zv
+= PT
- before
;
5347 old_zv_byte
+= PT_BYTE
- before_byte
;
5350 /* If the restriction isn't what it should be, set it. */
5351 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5352 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5354 /* Handling the process output should not deactivate the mark. */
5355 Vdeactivate_mark
= odeactivate
;
5357 current_buffer
->read_only
= old_read_only
;
5358 SET_PT_BOTH (opoint
, opoint_byte
);
5359 set_buffer_internal (old
);
5362 start_vms_process_read (vs
);
5367 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5369 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5370 This is intended for use by asynchronous process output filters and sentinels. */)
5373 return (waiting_for_user_input_p
? Qt
: Qnil
);
5376 /* Sending data to subprocess */
5378 jmp_buf send_process_frame
;
5379 Lisp_Object process_sent_to
;
5382 send_process_trap ()
5384 SIGNAL_THREAD_CHECK (SIGPIPE
);
5389 sigunblock (sigmask (SIGPIPE
));
5390 longjmp (send_process_frame
, 1);
5393 /* Send some data to process PROC.
5394 BUF is the beginning of the data; LEN is the number of characters.
5395 OBJECT is the Lisp object that the data comes from. If OBJECT is
5396 nil or t, it means that the data comes from C string.
5398 If OBJECT is not nil, the data is encoded by PROC's coding-system
5399 for encoding before it is sent.
5401 This function can evaluate Lisp code and can garbage collect. */
5404 send_process (proc
, buf
, len
, object
)
5405 volatile Lisp_Object proc
;
5406 unsigned char *volatile buf
;
5408 volatile Lisp_Object object
;
5410 /* Use volatile to protect variables from being clobbered by longjmp. */
5411 struct Lisp_Process
*p
= XPROCESS (proc
);
5413 struct coding_system
*coding
;
5414 struct gcpro gcpro1
;
5415 SIGTYPE (*volatile old_sigpipe
) ();
5420 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5423 if (p
->raw_status_new
)
5425 if (! EQ (p
->status
, Qrun
))
5426 error ("Process %s not running", SDATA (p
->name
));
5428 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5430 coding
= proc_encode_coding_system
[p
->outfd
];
5431 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5433 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5434 || (BUFFERP (object
)
5435 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5438 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5439 /* The coding system for encoding was changed to raw-text
5440 because we sent a unibyte text previously. Now we are
5441 sending a multibyte text, thus we must encode it by the
5442 original coding system specified for the current process. */
5443 setup_coding_system (p
->encode_coding_system
, coding
);
5444 coding
->src_multibyte
= 1;
5448 /* For sending a unibyte text, character code conversion should
5449 not take place but EOL conversion should. So, setup raw-text
5450 or one of the subsidiary if we have not yet done it. */
5451 if (CODING_REQUIRE_ENCODING (coding
))
5453 if (CODING_REQUIRE_FLUSHING (coding
))
5455 /* But, before changing the coding, we must flush out data. */
5456 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5457 send_process (proc
, "", 0, Qt
);
5458 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5460 setup_coding_system (raw_text_coding_system
5461 (Vlast_coding_system_used
),
5463 coding
->src_multibyte
= 0;
5466 coding
->dst_multibyte
= 0;
5468 if (CODING_REQUIRE_ENCODING (coding
))
5470 coding
->dst_object
= Qt
;
5471 if (BUFFERP (object
))
5473 int from_byte
, from
, to
;
5474 int save_pt
, save_pt_byte
;
5475 struct buffer
*cur
= current_buffer
;
5477 set_buffer_internal (XBUFFER (object
));
5478 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5480 from_byte
= PTR_BYTE_POS (buf
);
5481 from
= BYTE_TO_CHAR (from_byte
);
5482 to
= BYTE_TO_CHAR (from_byte
+ len
);
5483 TEMP_SET_PT_BOTH (from
, from_byte
);
5484 encode_coding_object (coding
, object
, from
, from_byte
,
5485 to
, from_byte
+ len
, Qt
);
5486 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5487 set_buffer_internal (cur
);
5489 else if (STRINGP (object
))
5491 encode_coding_string (coding
, object
, 1);
5495 coding
->dst_object
= make_unibyte_string (buf
, len
);
5496 coding
->produced
= len
;
5499 len
= coding
->produced
;
5500 buf
= SDATA (coding
->dst_object
);
5504 vs
= get_vms_process_pointer (p
->pid
);
5506 error ("Could not find this process: %x", p
->pid
);
5507 else if (write_to_vms_process (vs
, buf
, len
))
5511 if (pty_max_bytes
== 0)
5513 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5514 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5515 if (pty_max_bytes
< 0)
5516 pty_max_bytes
= 250;
5518 pty_max_bytes
= 250;
5520 /* Deduct one, to leave space for the eof. */
5524 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5525 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5526 when returning with longjmp despite being declared volatile. */
5527 if (!setjmp (send_process_frame
))
5529 process_sent_to
= proc
;
5534 /* Decide how much data we can send in one batch.
5535 Long lines need to be split into multiple batches. */
5538 /* Starting this at zero is always correct when not the first
5539 iteration because the previous iteration ended by sending C-d.
5540 It may not be correct for the first iteration
5541 if a partial line was sent in a separate send_process call.
5542 If that proves worth handling, we need to save linepos
5543 in the process object. */
5545 unsigned char *ptr
= (unsigned char *) buf
;
5546 unsigned char *end
= (unsigned char *) buf
+ len
;
5548 /* Scan through this text for a line that is too long. */
5549 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5557 /* If we found one, break the line there
5558 and put in a C-d to force the buffer through. */
5562 /* Send this batch, using one or more write calls. */
5565 int outfd
= p
->outfd
;
5566 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5567 #ifdef DATAGRAM_SOCKETS
5568 if (DATAGRAM_CHAN_P (outfd
))
5570 rv
= sendto (outfd
, (char *) buf
, this,
5571 0, datagram_address
[outfd
].sa
,
5572 datagram_address
[outfd
].len
);
5573 if (rv
< 0 && errno
== EMSGSIZE
)
5575 signal (SIGPIPE
, old_sigpipe
);
5576 report_file_error ("sending datagram",
5577 Fcons (proc
, Qnil
));
5583 rv
= emacs_write (outfd
, (char *) buf
, this);
5584 #ifdef ADAPTIVE_READ_BUFFERING
5585 if (p
->read_output_delay
> 0
5586 && p
->adaptive_read_buffering
== 1)
5588 p
->read_output_delay
= 0;
5589 process_output_delay_count
--;
5590 p
->read_output_skip
= 0;
5594 signal (SIGPIPE
, old_sigpipe
);
5600 || errno
== EWOULDBLOCK
5606 /* Buffer is full. Wait, accepting input;
5607 that may allow the program
5608 to finish doing output and read more. */
5612 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5613 /* A gross hack to work around a bug in FreeBSD.
5614 In the following sequence, read(2) returns
5618 write(2) 954 bytes, get EAGAIN
5619 read(2) 1024 bytes in process_read_output
5620 read(2) 11 bytes in process_read_output
5622 That is, read(2) returns more bytes than have
5623 ever been written successfully. The 1033 bytes
5624 read are the 1022 bytes written successfully
5625 after processing (for example with CRs added if
5626 the terminal is set up that way which it is
5627 here). The same bytes will be seen again in a
5628 later read(2), without the CRs. */
5630 if (errno
== EAGAIN
)
5633 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5635 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5637 /* Running filters might relocate buffers or strings.
5638 Arrange to relocate BUF. */
5639 if (BUFFERP (object
))
5640 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5641 else if (STRINGP (object
))
5642 offset
= buf
- SDATA (object
);
5644 #ifdef EMACS_HAS_USECS
5645 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5647 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5650 if (BUFFERP (object
))
5651 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5652 else if (STRINGP (object
))
5653 buf
= offset
+ SDATA (object
);
5658 /* This is a real error. */
5659 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5666 /* If we sent just part of the string, put in an EOF
5667 to force it through, before we send the rest. */
5669 Fprocess_send_eof (proc
);
5672 #endif /* not VMS */
5675 signal (SIGPIPE
, old_sigpipe
);
5677 proc
= process_sent_to
;
5678 p
= XPROCESS (proc
);
5680 p
->raw_status_new
= 0;
5681 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5682 p
->tick
= ++process_tick
;
5683 deactivate_process (proc
);
5685 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5687 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5694 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5696 doc
: /* Send current contents of region as input to PROCESS.
5697 PROCESS may be a process, a buffer, the name of a process or buffer, or
5698 nil, indicating the current buffer's process.
5699 Called from program, takes three arguments, PROCESS, START and END.
5700 If the region is more than 500 characters long,
5701 it is sent in several bunches. This may happen even for shorter regions.
5702 Output from processes can arrive in between bunches. */)
5703 (process
, start
, end
)
5704 Lisp_Object process
, start
, end
;
5709 proc
= get_process (process
);
5710 validate_region (&start
, &end
);
5712 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5713 move_gap (XINT (start
));
5715 start1
= CHAR_TO_BYTE (XINT (start
));
5716 end1
= CHAR_TO_BYTE (XINT (end
));
5717 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5718 Fcurrent_buffer ());
5723 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5725 doc
: /* Send PROCESS the contents of STRING as input.
5726 PROCESS may be a process, a buffer, the name of a process or buffer, or
5727 nil, indicating the current buffer's process.
5728 If STRING is more than 500 characters long,
5729 it is sent in several bunches. This may happen even for shorter strings.
5730 Output from processes can arrive in between bunches. */)
5732 Lisp_Object process
, string
;
5735 CHECK_STRING (string
);
5736 proc
= get_process (process
);
5737 send_process (proc
, SDATA (string
),
5738 SBYTES (string
), string
);
5742 /* Return the foreground process group for the tty/pty that
5743 the process P uses. */
5745 emacs_get_tty_pgrp (p
)
5746 struct Lisp_Process
*p
;
5751 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5754 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5755 master side. Try the slave side. */
5756 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5760 ioctl (fd
, TIOCGPGRP
, &gid
);
5764 #endif /* defined (TIOCGPGRP ) */
5769 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5770 Sprocess_running_child_p
, 0, 1, 0,
5771 doc
: /* Return t if PROCESS has given the terminal to a child.
5772 If the operating system does not make it possible to find out,
5773 return t unconditionally. */)
5775 Lisp_Object process
;
5777 /* Initialize in case ioctl doesn't exist or gives an error,
5778 in a way that will cause returning t. */
5781 struct Lisp_Process
*p
;
5783 proc
= get_process (process
);
5784 p
= XPROCESS (proc
);
5786 if (!EQ (p
->childp
, Qt
))
5787 error ("Process %s is not a subprocess",
5790 error ("Process %s is not active",
5793 gid
= emacs_get_tty_pgrp (p
);
5800 /* send a signal number SIGNO to PROCESS.
5801 If CURRENT_GROUP is t, that means send to the process group
5802 that currently owns the terminal being used to communicate with PROCESS.
5803 This is used for various commands in shell mode.
5804 If CURRENT_GROUP is lambda, that means send to the process group
5805 that currently owns the terminal, but only if it is NOT the shell itself.
5807 If NOMSG is zero, insert signal-announcements into process's buffers
5810 If we can, we try to signal PROCESS by sending control characters
5811 down the pty. This allows us to signal inferiors who have changed
5812 their uid, for which killpg would return an EPERM error. */
5815 process_send_signal (process
, signo
, current_group
, nomsg
)
5816 Lisp_Object process
;
5818 Lisp_Object current_group
;
5822 register struct Lisp_Process
*p
;
5826 proc
= get_process (process
);
5827 p
= XPROCESS (proc
);
5829 if (!EQ (p
->childp
, Qt
))
5830 error ("Process %s is not a subprocess",
5833 error ("Process %s is not active",
5837 current_group
= Qnil
;
5839 /* If we are using pgrps, get a pgrp number and make it negative. */
5840 if (NILP (current_group
))
5841 /* Send the signal to the shell's process group. */
5845 #ifdef SIGNALS_VIA_CHARACTERS
5846 /* If possible, send signals to the entire pgrp
5847 by sending an input character to it. */
5849 /* TERMIOS is the latest and bestest, and seems most likely to
5850 work. If the system has it, use it. */
5853 cc_t
*sig_char
= NULL
;
5855 tcgetattr (p
->infd
, &t
);
5860 sig_char
= &t
.c_cc
[VINTR
];
5864 sig_char
= &t
.c_cc
[VQUIT
];
5868 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5869 sig_char
= &t
.c_cc
[VSWTCH
];
5871 sig_char
= &t
.c_cc
[VSUSP
];
5876 if (sig_char
&& *sig_char
!= CDISABLE
)
5878 send_process (proc
, sig_char
, 1, Qnil
);
5881 /* If we can't send the signal with a character,
5882 fall through and send it another way. */
5883 #else /* ! HAVE_TERMIOS */
5885 /* On Berkeley descendants, the following IOCTL's retrieve the
5886 current control characters. */
5887 #if defined (TIOCGLTC) && defined (TIOCGETC)
5895 ioctl (p
->infd
, TIOCGETC
, &c
);
5896 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5899 ioctl (p
->infd
, TIOCGETC
, &c
);
5900 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5904 ioctl (p
->infd
, TIOCGLTC
, &lc
);
5905 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5907 #endif /* ! defined (SIGTSTP) */
5910 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5912 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5919 ioctl (p
->infd
, TCGETA
, &t
);
5920 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5923 ioctl (p
->infd
, TCGETA
, &t
);
5924 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5928 ioctl (p
->infd
, TCGETA
, &t
);
5929 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5931 #endif /* ! defined (SIGTSTP) */
5933 #else /* ! defined (TCGETA) */
5934 Your configuration files are messed up
.
5935 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5936 you'd better be using one of the alternatives above! */
5937 #endif /* ! defined (TCGETA) */
5938 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5939 /* In this case, the code above should alway returns. */
5941 #endif /* ! defined HAVE_TERMIOS */
5943 /* The code above may fall through if it can't
5944 handle the signal. */
5945 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5948 /* Get the current pgrp using the tty itself, if we have that.
5949 Otherwise, use the pty to get the pgrp.
5950 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5951 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5952 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5953 His patch indicates that if TIOCGPGRP returns an error, then
5954 we should just assume that p->pid is also the process group id. */
5956 gid
= emacs_get_tty_pgrp (p
);
5959 /* If we can't get the information, assume
5960 the shell owns the tty. */
5963 /* It is not clear whether anything really can set GID to -1.
5964 Perhaps on some system one of those ioctls can or could do so.
5965 Or perhaps this is vestigial. */
5968 #else /* ! defined (TIOCGPGRP ) */
5969 /* Can't select pgrps on this system, so we know that
5970 the child itself heads the pgrp. */
5972 #endif /* ! defined (TIOCGPGRP ) */
5974 /* If current_group is lambda, and the shell owns the terminal,
5975 don't send any signal. */
5976 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5984 p
->raw_status_new
= 0;
5986 p
->tick
= ++process_tick
;
5988 status_notify (NULL
);
5990 #endif /* ! defined (SIGCONT) */
5993 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5998 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6003 sys$
forcex (&(p
->pid
), 0, 1);
6006 flush_pending_output (p
->infd
);
6010 /* If we don't have process groups, send the signal to the immediate
6011 subprocess. That isn't really right, but it's better than any
6012 obvious alternative. */
6015 kill (p
->pid
, signo
);
6019 /* gid may be a pid, or minus a pgrp's number */
6021 if (!NILP (current_group
))
6023 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6024 EMACS_KILLPG (gid
, signo
);
6031 #else /* ! defined (TIOCSIGSEND) */
6032 EMACS_KILLPG (gid
, signo
);
6033 #endif /* ! defined (TIOCSIGSEND) */
6036 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6037 doc
: /* Interrupt process PROCESS.
6038 PROCESS may be a process, a buffer, or the name of a process or buffer.
6039 No arg or nil means current buffer's process.
6040 Second arg CURRENT-GROUP non-nil means send signal to
6041 the current process-group of the process's controlling terminal
6042 rather than to the process's own process group.
6043 If the process is a shell, this means interrupt current subjob
6044 rather than the shell.
6046 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6047 don't send the signal. */)
6048 (process
, current_group
)
6049 Lisp_Object process
, current_group
;
6051 process_send_signal (process
, SIGINT
, current_group
, 0);
6055 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6056 doc
: /* Kill process PROCESS. May be process or name of one.
6057 See function `interrupt-process' for more details on usage. */)
6058 (process
, current_group
)
6059 Lisp_Object process
, current_group
;
6061 process_send_signal (process
, SIGKILL
, current_group
, 0);
6065 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6066 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6067 See function `interrupt-process' for more details on usage. */)
6068 (process
, current_group
)
6069 Lisp_Object process
, current_group
;
6071 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6075 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6076 doc
: /* Stop process PROCESS. May be process or name of one.
6077 See function `interrupt-process' for more details on usage.
6078 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6079 (process
, current_group
)
6080 Lisp_Object process
, current_group
;
6083 if (PROCESSP (process
) && NETCONN_P (process
))
6085 struct Lisp_Process
*p
;
6087 p
= XPROCESS (process
);
6088 if (NILP (p
->command
)
6091 FD_CLR (p
->infd
, &input_wait_mask
);
6092 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6099 error ("No SIGTSTP support");
6101 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6106 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6107 doc
: /* Continue process PROCESS. May be process or name of one.
6108 See function `interrupt-process' for more details on usage.
6109 If PROCESS is a network process, resume handling of incoming traffic. */)
6110 (process
, current_group
)
6111 Lisp_Object process
, current_group
;
6114 if (PROCESSP (process
) && NETCONN_P (process
))
6116 struct Lisp_Process
*p
;
6118 p
= XPROCESS (process
);
6119 if (EQ (p
->command
, Qt
)
6121 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6123 FD_SET (p
->infd
, &input_wait_mask
);
6124 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6131 process_send_signal (process
, SIGCONT
, current_group
, 0);
6133 error ("No SIGCONT support");
6138 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6139 2, 2, "sProcess (name or number): \nnSignal code: ",
6140 doc
: /* Send PROCESS the signal with code SIGCODE.
6141 PROCESS may also be a number specifying the process id of the
6142 process to signal; in this case, the process need not be a child of
6144 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6146 Lisp_Object process
, sigcode
;
6150 if (INTEGERP (process
))
6152 pid
= XINT (process
);
6156 if (FLOATP (process
))
6158 pid
= (pid_t
) XFLOAT_DATA (process
);
6162 if (STRINGP (process
))
6165 if (tem
= Fget_process (process
), NILP (tem
))
6167 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6174 process
= get_process (process
);
6179 CHECK_PROCESS (process
);
6180 pid
= XPROCESS (process
)->pid
;
6182 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6186 #define parse_signal(NAME, VALUE) \
6187 else if (!xstricmp (name, NAME)) \
6188 XSETINT (sigcode, VALUE)
6190 if (INTEGERP (sigcode
))
6194 unsigned char *name
;
6196 CHECK_SYMBOL (sigcode
);
6197 name
= SDATA (SYMBOL_NAME (sigcode
));
6199 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6205 parse_signal ("usr1", SIGUSR1
);
6208 parse_signal ("usr2", SIGUSR2
);
6211 parse_signal ("term", SIGTERM
);
6214 parse_signal ("hup", SIGHUP
);
6217 parse_signal ("int", SIGINT
);
6220 parse_signal ("quit", SIGQUIT
);
6223 parse_signal ("ill", SIGILL
);
6226 parse_signal ("abrt", SIGABRT
);
6229 parse_signal ("emt", SIGEMT
);
6232 parse_signal ("kill", SIGKILL
);
6235 parse_signal ("fpe", SIGFPE
);
6238 parse_signal ("bus", SIGBUS
);
6241 parse_signal ("segv", SIGSEGV
);
6244 parse_signal ("sys", SIGSYS
);
6247 parse_signal ("pipe", SIGPIPE
);
6250 parse_signal ("alrm", SIGALRM
);
6253 parse_signal ("urg", SIGURG
);
6256 parse_signal ("stop", SIGSTOP
);
6259 parse_signal ("tstp", SIGTSTP
);
6262 parse_signal ("cont", SIGCONT
);
6265 parse_signal ("chld", SIGCHLD
);
6268 parse_signal ("ttin", SIGTTIN
);
6271 parse_signal ("ttou", SIGTTOU
);
6274 parse_signal ("io", SIGIO
);
6277 parse_signal ("xcpu", SIGXCPU
);
6280 parse_signal ("xfsz", SIGXFSZ
);
6283 parse_signal ("vtalrm", SIGVTALRM
);
6286 parse_signal ("prof", SIGPROF
);
6289 parse_signal ("winch", SIGWINCH
);
6292 parse_signal ("info", SIGINFO
);
6295 error ("Undefined signal name %s", name
);
6300 return make_number (kill (pid
, XINT (sigcode
)));
6303 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6304 doc
: /* Make PROCESS see end-of-file in its input.
6305 EOF comes after any text already sent to it.
6306 PROCESS may be a process, a buffer, the name of a process or buffer, or
6307 nil, indicating the current buffer's process.
6308 If PROCESS is a network connection, or is a process communicating
6309 through a pipe (as opposed to a pty), then you cannot send any more
6310 text to PROCESS after you call this function. */)
6312 Lisp_Object process
;
6315 struct coding_system
*coding
;
6317 if (DATAGRAM_CONN_P (process
))
6320 proc
= get_process (process
);
6321 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6323 /* Make sure the process is really alive. */
6324 if (XPROCESS (proc
)->raw_status_new
)
6325 update_status (XPROCESS (proc
));
6326 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6327 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6329 if (CODING_REQUIRE_FLUSHING (coding
))
6331 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6332 send_process (proc
, "", 0, Qnil
);
6336 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6338 if (XPROCESS (proc
)->pty_flag
)
6339 send_process (proc
, "\004", 1, Qnil
);
6342 int old_outfd
, new_outfd
;
6344 #ifdef HAVE_SHUTDOWN
6345 /* If this is a network connection, or socketpair is used
6346 for communication with the subprocess, call shutdown to cause EOF.
6347 (In some old system, shutdown to socketpair doesn't work.
6348 Then we just can't win.) */
6349 if (XPROCESS (proc
)->pid
== 0
6350 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6351 shutdown (XPROCESS (proc
)->outfd
, 1);
6352 /* In case of socketpair, outfd == infd, so don't close it. */
6353 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6354 emacs_close (XPROCESS (proc
)->outfd
);
6355 #else /* not HAVE_SHUTDOWN */
6356 emacs_close (XPROCESS (proc
)->outfd
);
6357 #endif /* not HAVE_SHUTDOWN */
6358 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6361 old_outfd
= XPROCESS (proc
)->outfd
;
6363 if (!proc_encode_coding_system
[new_outfd
])
6364 proc_encode_coding_system
[new_outfd
]
6365 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6366 bcopy (proc_encode_coding_system
[old_outfd
],
6367 proc_encode_coding_system
[new_outfd
],
6368 sizeof (struct coding_system
));
6369 bzero (proc_encode_coding_system
[old_outfd
],
6370 sizeof (struct coding_system
));
6372 XPROCESS (proc
)->outfd
= new_outfd
;
6378 /* Kill all processes associated with `buffer'.
6379 If `buffer' is nil, kill all processes */
6382 kill_buffer_processes (buffer
)
6385 Lisp_Object tail
, proc
;
6387 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6389 proc
= XCDR (XCAR (tail
));
6391 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6393 if (NETCONN_P (proc
))
6394 Fdelete_process (proc
);
6395 else if (XPROCESS (proc
)->infd
>= 0)
6396 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6401 /* On receipt of a signal that a child status has changed, loop asking
6402 about children with changed statuses until the system says there
6405 All we do is change the status; we do not run sentinels or print
6406 notifications. That is saved for the next time keyboard input is
6407 done, in order to avoid timing errors.
6409 ** WARNING: this can be called during garbage collection.
6410 Therefore, it must not be fooled by the presence of mark bits in
6413 ** USG WARNING: Although it is not obvious from the documentation
6414 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6415 signal() before executing at least one wait(), otherwise the
6416 handler will be called again, resulting in an infinite loop. The
6417 relevant portion of the documentation reads "SIGCLD signals will be
6418 queued and the signal-catching function will be continually
6419 reentered until the queue is empty". Invoking signal() causes the
6420 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6423 ** Malloc WARNING: This should never call malloc either directly or
6424 indirectly; if it does, that is a bug */
6428 sigchld_handler (signo
)
6431 int old_errno
= errno
;
6433 register struct Lisp_Process
*p
;
6434 extern EMACS_TIME
*input_available_clear_time
;
6436 SIGNAL_THREAD_CHECK (signo
);
6440 sigheld
|= sigbit (SIGCHLD
);
6452 #endif /* no WUNTRACED */
6453 /* Keep trying to get a status until we get a definitive result. */
6457 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6459 while (pid
< 0 && errno
== EINTR
);
6463 /* PID == 0 means no processes found, PID == -1 means a real
6464 failure. We have done all our job, so return. */
6466 /* USG systems forget handlers when they are used;
6467 must reestablish each time */
6468 #if defined (USG) && !defined (POSIX_SIGNALS)
6469 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6472 sigheld
&= ~sigbit (SIGCHLD
);
6480 #endif /* no WNOHANG */
6482 /* Find the process that signaled us, and record its status. */
6484 /* The process can have been deleted by Fdelete_process. */
6485 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6487 Lisp_Object xpid
= XCAR (tail
);
6488 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6489 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6491 XSETCAR (tail
, Qnil
);
6492 goto sigchld_end_of_loop
;
6496 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6498 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6500 proc
= XCDR (XCAR (tail
));
6501 p
= XPROCESS (proc
);
6502 if (EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6507 /* Look for an asynchronous process whose pid hasn't been filled
6510 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6512 proc
= XCDR (XCAR (tail
));
6513 p
= XPROCESS (proc
);
6519 /* Change the status of the process that was found. */
6522 union { int i
; WAITTYPE wt
; } u
;
6523 int clear_desc_flag
= 0;
6525 p
->tick
= ++process_tick
;
6527 p
->raw_status
= u
.i
;
6528 p
->raw_status_new
= 1;
6530 /* If process has terminated, stop waiting for its output. */
6531 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6533 clear_desc_flag
= 1;
6535 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6536 if (clear_desc_flag
)
6538 FD_CLR (p
->infd
, &input_wait_mask
);
6539 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6542 /* Tell wait_reading_process_output that it needs to wake up and
6544 if (input_available_clear_time
)
6545 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6548 /* There was no asynchronous process found for that pid: we have
6549 a synchronous process. */
6552 synch_process_alive
= 0;
6554 /* Report the status of the synchronous process. */
6556 synch_process_retcode
= WRETCODE (w
);
6557 else if (WIFSIGNALED (w
))
6558 synch_process_termsig
= WTERMSIG (w
);
6560 /* Tell wait_reading_process_output that it needs to wake up and
6562 if (input_available_clear_time
)
6563 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6566 sigchld_end_of_loop
:
6569 /* On some systems, we must return right away.
6570 If any more processes want to signal us, we will
6572 Otherwise (on systems that have WNOHANG), loop around
6573 to use up all the processes that have something to tell us. */
6574 #if (defined WINDOWSNT \
6575 || (defined USG && !defined GNU_LINUX \
6576 && !(defined HPUX && defined WNOHANG)))
6577 #if defined (USG) && ! defined (POSIX_SIGNALS)
6578 signal (signo
, sigchld_handler
);
6582 #endif /* USG, but not HPUX with WNOHANG */
6585 #endif /* SIGCHLD */
6589 exec_sentinel_unwind (data
)
6592 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6597 exec_sentinel_error_handler (error
)
6600 cmd_error_internal (error
, "error in process sentinel: ");
6602 update_echo_area ();
6603 Fsleep_for (make_number (2), Qnil
);
6608 exec_sentinel (proc
, reason
)
6609 Lisp_Object proc
, reason
;
6611 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6612 register struct Lisp_Process
*p
= XPROCESS (proc
);
6613 int count
= SPECPDL_INDEX ();
6614 int outer_running_asynch_code
= running_asynch_code
;
6615 int waiting
= waiting_for_user_input_p
;
6617 if (inhibit_sentinels
)
6620 /* No need to gcpro these, because all we do with them later
6621 is test them for EQness, and none of them should be a string. */
6622 odeactivate
= Vdeactivate_mark
;
6623 XSETBUFFER (obuffer
, current_buffer
);
6624 okeymap
= current_buffer
->keymap
;
6626 sentinel
= p
->sentinel
;
6627 if (NILP (sentinel
))
6630 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6631 assure that it gets restored no matter how the sentinel exits. */
6633 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6634 /* Inhibit quit so that random quits don't screw up a running filter. */
6635 specbind (Qinhibit_quit
, Qt
);
6636 specbind (Qlast_nonmenu_event
, Qt
);
6638 /* In case we get recursively called,
6639 and we already saved the match data nonrecursively,
6640 save the same match data in safely recursive fashion. */
6641 if (outer_running_asynch_code
)
6644 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6645 restore_search_regs ();
6646 record_unwind_save_match_data ();
6647 Fset_match_data (tem
, Qt
);
6650 /* For speed, if a search happens within this code,
6651 save the match data in a special nonrecursive fashion. */
6652 running_asynch_code
= 1;
6654 internal_condition_case_1 (read_process_output_call
,
6656 Fcons (proc
, Fcons (reason
, Qnil
))),
6657 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6658 exec_sentinel_error_handler
);
6660 /* If we saved the match data nonrecursively, restore it now. */
6661 restore_search_regs ();
6662 running_asynch_code
= outer_running_asynch_code
;
6664 Vdeactivate_mark
= odeactivate
;
6666 /* Restore waiting_for_user_input_p as it was
6667 when we were called, in case the filter clobbered it. */
6668 waiting_for_user_input_p
= waiting
;
6671 if (! EQ (Fcurrent_buffer (), obuffer
)
6672 || ! EQ (current_buffer
->keymap
, okeymap
))
6674 /* But do it only if the caller is actually going to read events.
6675 Otherwise there's no need to make him wake up, and it could
6676 cause trouble (for example it would make sit_for return). */
6677 if (waiting_for_user_input_p
== -1)
6678 record_asynch_buffer_change ();
6680 unbind_to (count
, Qnil
);
6683 /* Report all recent events of a change in process status
6684 (either run the sentinel or output a message).
6685 This is usually done while Emacs is waiting for keyboard input
6686 but can be done at other times. */
6689 status_notify (deleting_process
)
6690 struct Lisp_Process
*deleting_process
;
6692 register Lisp_Object proc
, buffer
;
6693 Lisp_Object tail
, msg
;
6694 struct gcpro gcpro1
, gcpro2
;
6698 /* We need to gcpro tail; if read_process_output calls a filter
6699 which deletes a process and removes the cons to which tail points
6700 from Vprocess_alist, and then causes a GC, tail is an unprotected
6704 /* Set this now, so that if new processes are created by sentinels
6705 that we run, we get called again to handle their status changes. */
6706 update_tick
= process_tick
;
6708 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6711 register struct Lisp_Process
*p
;
6713 proc
= Fcdr (XCAR (tail
));
6714 p
= XPROCESS (proc
);
6716 if (p
->tick
!= p
->update_tick
)
6718 p
->update_tick
= p
->tick
;
6720 /* If process is still active, read any output that remains. */
6721 while (! EQ (p
->filter
, Qt
)
6722 && ! EQ (p
->status
, Qconnect
)
6723 && ! EQ (p
->status
, Qlisten
)
6724 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6726 && p
!= deleting_process
6727 && read_process_output (proc
, p
->infd
) > 0);
6731 /* Get the text to use for the message. */
6732 if (p
->raw_status_new
)
6734 msg
= status_message (p
);
6736 /* If process is terminated, deactivate it or delete it. */
6738 if (CONSP (p
->status
))
6739 symbol
= XCAR (p
->status
);
6741 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6742 || EQ (symbol
, Qclosed
))
6744 if (delete_exited_processes
)
6745 remove_process (proc
);
6747 deactivate_process (proc
);
6750 /* The actions above may have further incremented p->tick.
6751 So set p->update_tick again
6752 so that an error in the sentinel will not cause
6753 this code to be run again. */
6754 p
->update_tick
= p
->tick
;
6755 /* Now output the message suitably. */
6756 if (!NILP (p
->sentinel
))
6757 exec_sentinel (proc
, msg
);
6758 /* Don't bother with a message in the buffer
6759 when a process becomes runnable. */
6760 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6762 Lisp_Object ro
, tem
;
6763 struct buffer
*old
= current_buffer
;
6764 int opoint
, opoint_byte
;
6765 int before
, before_byte
;
6767 ro
= XBUFFER (buffer
)->read_only
;
6769 /* Avoid error if buffer is deleted
6770 (probably that's why the process is dead, too) */
6771 if (NILP (XBUFFER (buffer
)->name
))
6773 Fset_buffer (buffer
);
6776 opoint_byte
= PT_BYTE
;
6777 /* Insert new output into buffer
6778 at the current end-of-output marker,
6779 thus preserving logical ordering of input and output. */
6780 if (XMARKER (p
->mark
)->buffer
)
6781 Fgoto_char (p
->mark
);
6783 SET_PT_BOTH (ZV
, ZV_BYTE
);
6786 before_byte
= PT_BYTE
;
6788 tem
= current_buffer
->read_only
;
6789 current_buffer
->read_only
= Qnil
;
6790 insert_string ("\nProcess ");
6791 Finsert (1, &p
->name
);
6792 insert_string (" ");
6794 current_buffer
->read_only
= tem
;
6795 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6797 if (opoint
>= before
)
6798 SET_PT_BOTH (opoint
+ (PT
- before
),
6799 opoint_byte
+ (PT_BYTE
- before_byte
));
6801 SET_PT_BOTH (opoint
, opoint_byte
);
6803 set_buffer_internal (old
);
6808 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6809 redisplay_preserve_echo_area (13);
6815 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6816 Sset_process_coding_system
, 1, 3, 0,
6817 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6818 DECODING will be used to decode subprocess output and ENCODING to
6819 encode subprocess input. */)
6820 (process
, decoding
, encoding
)
6821 register Lisp_Object process
, decoding
, encoding
;
6823 register struct Lisp_Process
*p
;
6825 CHECK_PROCESS (process
);
6826 p
= XPROCESS (process
);
6828 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6830 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6831 Fcheck_coding_system (decoding
);
6832 Fcheck_coding_system (encoding
);
6833 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6834 p
->decode_coding_system
= decoding
;
6835 p
->encode_coding_system
= encoding
;
6836 setup_process_coding_systems (process
);
6841 DEFUN ("process-coding-system",
6842 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6843 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6845 register Lisp_Object process
;
6847 CHECK_PROCESS (process
);
6848 return Fcons (XPROCESS (process
)->decode_coding_system
,
6849 XPROCESS (process
)->encode_coding_system
);
6852 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6853 Sset_process_filter_multibyte
, 2, 2, 0,
6854 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6855 If FLAG is non-nil, the filter is given multibyte strings.
6856 If FLAG is nil, the filter is given unibyte strings. In this case,
6857 all character code conversion except for end-of-line conversion is
6860 Lisp_Object process
, flag
;
6862 register struct Lisp_Process
*p
;
6864 CHECK_PROCESS (process
);
6865 p
= XPROCESS (process
);
6866 p
->filter_multibyte
= !NILP (flag
);
6867 setup_process_coding_systems (process
);
6872 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6873 Sprocess_filter_multibyte_p
, 1, 1, 0,
6874 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6876 Lisp_Object process
;
6878 register struct Lisp_Process
*p
;
6880 CHECK_PROCESS (process
);
6881 p
= XPROCESS (process
);
6883 return (p
->filter_multibyte
? Qt
: Qnil
);
6888 /* Add DESC to the set of keyboard input descriptors. */
6891 add_keyboard_wait_descriptor (desc
)
6894 FD_SET (desc
, &input_wait_mask
);
6895 FD_SET (desc
, &non_process_wait_mask
);
6896 if (desc
> max_keyboard_desc
)
6897 max_keyboard_desc
= desc
;
6900 static int add_gpm_wait_descriptor_called_flag
;
6903 add_gpm_wait_descriptor (desc
)
6906 if (! add_gpm_wait_descriptor_called_flag
)
6907 FD_CLR (0, &input_wait_mask
);
6908 add_gpm_wait_descriptor_called_flag
= 1;
6909 FD_SET (desc
, &input_wait_mask
);
6910 FD_SET (desc
, &gpm_wait_mask
);
6911 if (desc
> max_gpm_desc
)
6912 max_gpm_desc
= desc
;
6915 /* From now on, do not expect DESC to give keyboard input. */
6918 delete_keyboard_wait_descriptor (desc
)
6922 int lim
= max_keyboard_desc
;
6924 FD_CLR (desc
, &input_wait_mask
);
6925 FD_CLR (desc
, &non_process_wait_mask
);
6927 if (desc
== max_keyboard_desc
)
6928 for (fd
= 0; fd
< lim
; fd
++)
6929 if (FD_ISSET (fd
, &input_wait_mask
)
6930 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6931 && !FD_ISSET (fd
, &gpm_wait_mask
))
6932 max_keyboard_desc
= fd
;
6936 delete_gpm_wait_descriptor (desc
)
6940 int lim
= max_gpm_desc
;
6942 FD_CLR (desc
, &input_wait_mask
);
6943 FD_CLR (desc
, &non_process_wait_mask
);
6945 if (desc
== max_gpm_desc
)
6946 for (fd
= 0; fd
< lim
; fd
++)
6947 if (FD_ISSET (fd
, &input_wait_mask
)
6948 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6949 && !FD_ISSET (fd
, &non_process_wait_mask
))
6953 /* Return nonzero if *MASK has a bit set
6954 that corresponds to one of the keyboard input descriptors. */
6957 keyboard_bit_set (mask
)
6962 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6963 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6964 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6975 inhibit_sentinels
= 0;
6979 if (! noninteractive
|| initialized
)
6981 signal (SIGCHLD
, sigchld_handler
);
6984 FD_ZERO (&input_wait_mask
);
6985 FD_ZERO (&non_keyboard_wait_mask
);
6986 FD_ZERO (&non_process_wait_mask
);
6987 max_process_desc
= 0;
6989 #ifdef NON_BLOCKING_CONNECT
6990 FD_ZERO (&connect_wait_mask
);
6991 num_pending_connects
= 0;
6994 #ifdef ADAPTIVE_READ_BUFFERING
6995 process_output_delay_count
= 0;
6996 process_output_skip
= 0;
6999 /* Don't do this, it caused infinite select loops. The display
7000 method should call add_keyboard_wait_descriptor on stdin if it
7003 FD_SET (0, &input_wait_mask
);
7006 Vprocess_alist
= Qnil
;
7008 deleted_pid_list
= Qnil
;
7010 for (i
= 0; i
< MAXDESC
; i
++)
7012 chan_process
[i
] = Qnil
;
7013 proc_buffered_char
[i
] = -1;
7015 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7016 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7017 #ifdef DATAGRAM_SOCKETS
7018 bzero (datagram_address
, sizeof datagram_address
);
7023 Lisp_Object subfeatures
= Qnil
;
7024 struct socket_options
*sopt
;
7026 #define ADD_SUBFEATURE(key, val) \
7027 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7029 #ifdef NON_BLOCKING_CONNECT
7030 ADD_SUBFEATURE (QCnowait
, Qt
);
7032 #ifdef DATAGRAM_SOCKETS
7033 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7035 #ifdef HAVE_LOCAL_SOCKETS
7036 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7038 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7040 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7042 #ifdef HAVE_GETSOCKNAME
7043 ADD_SUBFEATURE (QCservice
, Qt
);
7045 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7046 ADD_SUBFEATURE (QCserver
, Qt
);
7049 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7050 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7052 Fprovide (intern ("make-network-process"), subfeatures
);
7054 #endif /* HAVE_SOCKETS */
7056 #if defined (DARWIN) || defined (MAC_OSX)
7057 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7058 processes. As such, we only change the default value. */
7061 char *release
= get_operating_system_release();
7062 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7063 && release
[1] == '.')) {
7064 Vprocess_connection_type
= Qnil
;
7073 Qprocessp
= intern ("processp");
7074 staticpro (&Qprocessp
);
7075 Qrun
= intern ("run");
7077 Qstop
= intern ("stop");
7079 Qsignal
= intern ("signal");
7080 staticpro (&Qsignal
);
7082 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7085 Qexit = intern ("exit");
7086 staticpro (&Qexit); */
7088 Qopen
= intern ("open");
7090 Qclosed
= intern ("closed");
7091 staticpro (&Qclosed
);
7092 Qconnect
= intern ("connect");
7093 staticpro (&Qconnect
);
7094 Qfailed
= intern ("failed");
7095 staticpro (&Qfailed
);
7096 Qlisten
= intern ("listen");
7097 staticpro (&Qlisten
);
7098 Qlocal
= intern ("local");
7099 staticpro (&Qlocal
);
7100 Qipv4
= intern ("ipv4");
7103 Qipv6
= intern ("ipv6");
7106 Qdatagram
= intern ("datagram");
7107 staticpro (&Qdatagram
);
7109 QCname
= intern (":name");
7110 staticpro (&QCname
);
7111 QCbuffer
= intern (":buffer");
7112 staticpro (&QCbuffer
);
7113 QChost
= intern (":host");
7114 staticpro (&QChost
);
7115 QCservice
= intern (":service");
7116 staticpro (&QCservice
);
7117 QCtype
= intern (":type");
7118 staticpro (&QCtype
);
7119 QClocal
= intern (":local");
7120 staticpro (&QClocal
);
7121 QCremote
= intern (":remote");
7122 staticpro (&QCremote
);
7123 QCcoding
= intern (":coding");
7124 staticpro (&QCcoding
);
7125 QCserver
= intern (":server");
7126 staticpro (&QCserver
);
7127 QCnowait
= intern (":nowait");
7128 staticpro (&QCnowait
);
7129 QCsentinel
= intern (":sentinel");
7130 staticpro (&QCsentinel
);
7131 QClog
= intern (":log");
7133 QCnoquery
= intern (":noquery");
7134 staticpro (&QCnoquery
);
7135 QCstop
= intern (":stop");
7136 staticpro (&QCstop
);
7137 QCoptions
= intern (":options");
7138 staticpro (&QCoptions
);
7139 QCplist
= intern (":plist");
7140 staticpro (&QCplist
);
7141 QCfilter_multibyte
= intern (":filter-multibyte");
7142 staticpro (&QCfilter_multibyte
);
7144 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7145 staticpro (&Qlast_nonmenu_event
);
7147 staticpro (&Vprocess_alist
);
7149 staticpro (&deleted_pid_list
);
7152 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7153 doc
: /* *Non-nil means delete processes immediately when they exit.
7154 A value of nil means don't delete them until `list-processes' is run. */);
7156 delete_exited_processes
= 1;
7158 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7159 doc
: /* Control type of device used to communicate with subprocesses.
7160 Values are nil to use a pipe, or t or `pty' to use a pty.
7161 The value has no effect if the system has no ptys or if all ptys are busy:
7162 then a pipe is used in any case.
7163 The value takes effect when `start-process' is called. */);
7164 Vprocess_connection_type
= Qt
;
7166 #ifdef ADAPTIVE_READ_BUFFERING
7167 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7168 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7169 On some systems, when Emacs reads the output from a subprocess, the output data
7170 is read in very small blocks, potentially resulting in very poor performance.
7171 This behavior can be remedied to some extent by setting this variable to a
7172 non-nil value, as it will automatically delay reading from such processes, to
7173 allow them to produce more output before Emacs tries to read it.
7174 If the value is t, the delay is reset after each write to the process; any other
7175 non-nil value means that the delay is not reset on write.
7176 The variable takes effect when `start-process' is called. */);
7177 Vprocess_adaptive_read_buffering
= Qt
;
7180 defsubr (&Sprocessp
);
7181 defsubr (&Sget_process
);
7182 defsubr (&Sget_buffer_process
);
7183 defsubr (&Sdelete_process
);
7184 defsubr (&Sprocess_status
);
7185 defsubr (&Sprocess_exit_status
);
7186 defsubr (&Sprocess_id
);
7187 defsubr (&Sprocess_name
);
7188 defsubr (&Sprocess_tty_name
);
7189 defsubr (&Sprocess_command
);
7190 defsubr (&Sset_process_buffer
);
7191 defsubr (&Sprocess_buffer
);
7192 defsubr (&Sprocess_mark
);
7193 defsubr (&Sset_process_filter
);
7194 defsubr (&Sprocess_filter
);
7195 defsubr (&Sset_process_sentinel
);
7196 defsubr (&Sprocess_sentinel
);
7197 defsubr (&Sset_process_window_size
);
7198 defsubr (&Sset_process_inherit_coding_system_flag
);
7199 defsubr (&Sprocess_inherit_coding_system_flag
);
7200 defsubr (&Sset_process_query_on_exit_flag
);
7201 defsubr (&Sprocess_query_on_exit_flag
);
7202 defsubr (&Sprocess_contact
);
7203 defsubr (&Sprocess_plist
);
7204 defsubr (&Sset_process_plist
);
7205 defsubr (&Slist_processes
);
7206 defsubr (&Sprocess_list
);
7207 defsubr (&Sstart_process
);
7209 defsubr (&Sset_network_process_option
);
7210 defsubr (&Smake_network_process
);
7211 defsubr (&Sformat_network_address
);
7212 #endif /* HAVE_SOCKETS */
7213 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7215 defsubr (&Snetwork_interface_list
);
7217 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7218 defsubr (&Snetwork_interface_info
);
7220 #endif /* HAVE_SOCKETS ... */
7221 #ifdef DATAGRAM_SOCKETS
7222 defsubr (&Sprocess_datagram_address
);
7223 defsubr (&Sset_process_datagram_address
);
7225 defsubr (&Saccept_process_output
);
7226 defsubr (&Sprocess_send_region
);
7227 defsubr (&Sprocess_send_string
);
7228 defsubr (&Sinterrupt_process
);
7229 defsubr (&Skill_process
);
7230 defsubr (&Squit_process
);
7231 defsubr (&Sstop_process
);
7232 defsubr (&Scontinue_process
);
7233 defsubr (&Sprocess_running_child_p
);
7234 defsubr (&Sprocess_send_eof
);
7235 defsubr (&Ssignal_process
);
7236 defsubr (&Swaiting_for_user_input_p
);
7237 /* defsubr (&Sprocess_connection); */
7238 defsubr (&Sset_process_coding_system
);
7239 defsubr (&Sprocess_coding_system
);
7240 defsubr (&Sset_process_filter_multibyte
);
7241 defsubr (&Sprocess_filter_multibyte_p
);
7245 #else /* not subprocesses */
7247 #include <sys/types.h>
7251 #include "systime.h"
7252 #include "character.h"
7254 #include "termopts.h"
7255 #include "sysselect.h"
7257 extern int frame_garbaged
;
7259 extern EMACS_TIME
timer_check ();
7260 extern int timers_run
;
7264 /* As described above, except assuming that there are no subprocesses:
7266 Wait for timeout to elapse and/or keyboard input to be available.
7269 timeout in seconds, or
7270 zero for no limit, or
7271 -1 means gobble data immediately available but don't wait for any.
7273 read_kbd is a Lisp_Object:
7274 0 to ignore keyboard input, or
7275 1 to return when input is available, or
7276 -1 means caller will actually read the input, so don't throw to
7279 see full version for other parameters. We know that wait_proc will
7280 always be NULL, since `subprocesses' isn't defined.
7282 do_display != 0 means redisplay should be done to show subprocess
7283 output that arrives.
7285 Return true if we received input from any process. */
7288 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7289 wait_for_cell
, wait_proc
, just_wait_proc
)
7290 int time_limit
, microsecs
, read_kbd
, do_display
;
7291 Lisp_Object wait_for_cell
;
7292 struct Lisp_Process
*wait_proc
;
7296 EMACS_TIME end_time
, timeout
;
7297 SELECT_TYPE waitchannels
;
7300 /* What does time_limit really mean? */
7301 if (time_limit
|| microsecs
)
7303 EMACS_GET_TIME (end_time
);
7304 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7305 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7308 /* Turn off periodic alarms (in case they are in use)
7309 and then turn off any other atimers,
7310 because the select emulator uses alarms. */
7312 turn_on_atimers (0);
7316 int timeout_reduced_for_timers
= 0;
7318 /* If calling from keyboard input, do not quit
7319 since we want to return C-g as an input character.
7320 Otherwise, do pending quit if requested. */
7324 /* Exit now if the cell we're waiting for became non-nil. */
7325 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7328 /* Compute time from now till when time limit is up */
7329 /* Exit if already run out */
7330 if (time_limit
== -1)
7332 /* -1 specified for timeout means
7333 gobble output available now
7334 but don't wait at all. */
7336 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7338 else if (time_limit
|| microsecs
)
7340 EMACS_GET_TIME (timeout
);
7341 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7342 if (EMACS_TIME_NEG_P (timeout
))
7347 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7350 /* If our caller will not immediately handle keyboard events,
7351 run timer events directly.
7352 (Callers that will immediately read keyboard events
7353 call timer_delay on their own.) */
7354 if (NILP (wait_for_cell
))
7356 EMACS_TIME timer_delay
;
7360 int old_timers_run
= timers_run
;
7361 timer_delay
= timer_check (1);
7362 if (timers_run
!= old_timers_run
&& do_display
)
7363 /* We must retry, since a timer may have requeued itself
7364 and that could alter the time delay. */
7365 redisplay_preserve_echo_area (14);
7369 while (!detect_input_pending ());
7371 /* If there is unread keyboard input, also return. */
7373 && requeued_events_pending_p ())
7376 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7378 EMACS_TIME difference
;
7379 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7380 if (EMACS_TIME_NEG_P (difference
))
7382 timeout
= timer_delay
;
7383 timeout_reduced_for_timers
= 1;
7388 /* Cause C-g and alarm signals to take immediate action,
7389 and cause input available signals to zero out timeout. */
7391 set_waiting_for_input (&timeout
);
7393 /* Wait till there is something to do. */
7395 if (! read_kbd
&& NILP (wait_for_cell
))
7396 FD_ZERO (&waitchannels
);
7398 FD_SET (0, &waitchannels
);
7400 /* If a frame has been newly mapped and needs updating,
7401 reprocess its display stuff. */
7402 if (frame_garbaged
&& do_display
)
7404 clear_waiting_for_input ();
7405 redisplay_preserve_echo_area (15);
7407 set_waiting_for_input (&timeout
);
7410 if (read_kbd
&& detect_input_pending ())
7413 FD_ZERO (&waitchannels
);
7416 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7421 /* Make C-g and alarm signals set flags again */
7422 clear_waiting_for_input ();
7424 /* If we woke up due to SIGWINCH, actually change size now. */
7425 do_pending_window_change (0);
7427 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7428 /* We waited the full specified time, so return now. */
7433 /* If the system call was interrupted, then go around the
7435 if (xerrno
== EINTR
)
7436 FD_ZERO (&waitchannels
);
7438 error ("select error: %s", emacs_strerror (xerrno
));
7441 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7442 /* System sometimes fails to deliver SIGIO. */
7443 kill (getpid (), SIGIO
);
7446 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7447 kill (getpid (), SIGIO
);
7450 /* Check for keyboard input */
7453 && detect_input_pending_run_timers (do_display
))
7455 swallow_events (do_display
);
7456 if (detect_input_pending_run_timers (do_display
))
7460 /* If there is unread keyboard input, also return. */
7462 && requeued_events_pending_p ())
7465 /* If wait_for_cell. check for keyboard input
7466 but don't run any timers.
7467 ??? (It seems wrong to me to check for keyboard
7468 input at all when wait_for_cell, but the code
7469 has been this way since July 1994.
7470 Try changing this after version 19.31.) */
7471 if (! NILP (wait_for_cell
)
7472 && detect_input_pending ())
7474 swallow_events (do_display
);
7475 if (detect_input_pending ())
7479 /* Exit now if the cell we're waiting for became non-nil. */
7480 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7490 /* Don't confuse make-docfile by having two doc strings for this function.
7491 make-docfile does not pay attention to #if, for good reason! */
7492 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7495 register Lisp_Object name
;
7500 /* Don't confuse make-docfile by having two doc strings for this function.
7501 make-docfile does not pay attention to #if, for good reason! */
7502 DEFUN ("process-inherit-coding-system-flag",
7503 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7507 register Lisp_Object process
;
7509 /* Ignore the argument and return the value of
7510 inherit-process-coding-system. */
7511 return inherit_process_coding_system
? Qt
: Qnil
;
7514 /* Kill all processes associated with `buffer'.
7515 If `buffer' is nil, kill all processes.
7516 Since we have no subprocesses, this does nothing. */
7519 kill_buffer_processes (buffer
)
7532 QCtype
= intern (":type");
7533 staticpro (&QCtype
);
7535 defsubr (&Sget_buffer_process
);
7536 defsubr (&Sprocess_inherit_coding_system_flag
);
7540 #endif /* not subprocesses */
7542 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7543 (do not change this comment) */