1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008 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, 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)
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 */
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>
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) (GC_CONSP (XPROCESS (p)->childp))
178 #define NETCONN1_P(p) (GC_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 */
599 if (access (pty_name
, 6) != 0)
602 # if !defined(IRIS) && !defined(__sgi)
614 #endif /* HAVE_PTYS */
620 register Lisp_Object val
, tem
, name1
;
621 register struct Lisp_Process
*p
;
625 p
= allocate_process ();
633 p
->raw_status_new
= 0;
635 p
->mark
= Fmake_marker ();
637 #ifdef ADAPTIVE_READ_BUFFERING
638 p
->adaptive_read_buffering
= 0;
639 p
->read_output_delay
= 0;
640 p
->read_output_skip
= 0;
643 /* If name is already in use, modify it until it is unused. */
648 tem
= Fget_process (name1
);
649 if (NILP (tem
)) break;
650 sprintf (suffix
, "<%d>", i
);
651 name1
= concat2 (name
, build_string (suffix
));
655 XSETPROCESS (val
, p
);
656 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
661 remove_process (proc
)
662 register Lisp_Object proc
;
664 register Lisp_Object pair
;
666 pair
= Frassq (proc
, Vprocess_alist
);
667 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
669 deactivate_process (proc
);
672 /* Setup coding systems of PROCESS. */
675 setup_process_coding_systems (process
)
678 struct Lisp_Process
*p
= XPROCESS (process
);
680 int outch
= p
->outfd
;
682 if (inch
< 0 || outch
< 0)
685 if (!proc_decode_coding_system
[inch
])
686 proc_decode_coding_system
[inch
]
687 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
688 setup_coding_system (p
->decode_coding_system
,
689 proc_decode_coding_system
[inch
]);
690 if (! NILP (p
->filter
))
692 if (!p
->filter_multibyte
)
693 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
695 else if (BUFFERP (p
->buffer
))
697 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
698 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
701 if (!proc_encode_coding_system
[outch
])
702 proc_encode_coding_system
[outch
]
703 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
704 setup_coding_system (p
->encode_coding_system
,
705 proc_encode_coding_system
[outch
]);
706 if (proc_encode_coding_system
[outch
]->eol_type
== CODING_EOL_UNDECIDED
)
707 proc_encode_coding_system
[outch
]->eol_type
= system_eol_type
;
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_tty
) + w_tty
+ 1);
1382 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1385 XSETFASTINT (minspace
, 1);
1387 set_buffer_internal (XBUFFER (Vstandard_output
));
1388 current_buffer
->undo_list
= Qt
;
1390 current_buffer
->truncate_lines
= Qt
;
1392 write_string ("Proc", -1);
1393 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1394 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1397 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1399 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1400 write_string ("\n", -1);
1402 write_string ("----", -1);
1403 Findent_to (i_status
, minspace
); write_string ("------", -1);
1404 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1407 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1409 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1410 write_string ("\n", -1);
1412 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1416 proc
= Fcdr (XCAR (tail
));
1417 p
= XPROCESS (proc
);
1418 if (NILP (p
->childp
))
1420 if (!NILP (query_only
) && p
->kill_without_query
)
1423 Finsert (1, &p
->name
);
1424 Findent_to (i_status
, minspace
);
1426 if (p
->raw_status_new
)
1429 if (CONSP (p
->status
))
1430 symbol
= XCAR (p
->status
);
1432 if (EQ (symbol
, Qsignal
))
1435 tem
= Fcar (Fcdr (p
->status
));
1437 if (XINT (tem
) < NSIG
)
1438 write_string (sys_errlist
[XINT (tem
)], -1);
1441 Fprinc (symbol
, Qnil
);
1443 else if (NETCONN1_P (p
))
1445 if (EQ (symbol
, Qexit
))
1446 write_string ("closed", -1);
1447 else if (EQ (p
->command
, Qt
))
1448 write_string ("stopped", -1);
1449 else if (EQ (symbol
, Qrun
))
1450 write_string ("open", -1);
1452 Fprinc (symbol
, Qnil
);
1455 Fprinc (symbol
, Qnil
);
1457 if (EQ (symbol
, Qexit
))
1460 tem
= Fcar (Fcdr (p
->status
));
1463 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1464 write_string (tembuf
, -1);
1468 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1471 Findent_to (i_buffer
, minspace
);
1472 if (NILP (p
->buffer
))
1473 insert_string ("(none)");
1474 else if (NILP (XBUFFER (p
->buffer
)->name
))
1475 insert_string ("(Killed)");
1477 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1481 Findent_to (i_tty
, minspace
);
1482 if (STRINGP (p
->tty_name
))
1483 Finsert (1, &p
->tty_name
);
1486 Findent_to (i_command
, minspace
);
1488 if (EQ (p
->status
, Qlisten
))
1490 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1491 if (INTEGERP (port
))
1492 port
= Fnumber_to_string (port
);
1494 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1495 sprintf (tembuf
, "(network %s server on %s)\n",
1496 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1497 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1498 insert_string (tembuf
);
1500 else if (NETCONN1_P (p
))
1502 /* For a local socket, there is no host name,
1503 so display service instead. */
1504 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1505 if (!STRINGP (host
))
1507 host
= Fplist_get (p
->childp
, QCservice
);
1508 if (INTEGERP (host
))
1509 host
= Fnumber_to_string (host
);
1512 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1513 sprintf (tembuf
, "(network %s connection to %s)\n",
1514 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1515 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1516 insert_string (tembuf
);
1528 insert_string (" ");
1530 insert_string ("\n");
1534 status_notify (NULL
);
1538 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1539 doc
: /* Display a list of all processes.
1540 If optional argument QUERY-ONLY is non-nil, only processes with
1541 the query-on-exit flag set will be listed.
1542 Any process listed as exited or signaled is actually eliminated
1543 after the listing is made. */)
1545 Lisp_Object query_only
;
1547 internal_with_output_to_temp_buffer ("*Process List*",
1548 list_processes_1
, query_only
);
1552 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1553 doc
: /* Return a list of all processes. */)
1556 return Fmapcar (Qcdr
, Vprocess_alist
);
1559 /* Starting asynchronous inferior processes. */
1561 static Lisp_Object
start_process_unwind ();
1563 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1564 doc
: /* Start a program in a subprocess. Return the process object for it.
1565 NAME is name for process. It is modified if necessary to make it unique.
1566 BUFFER is the buffer (or buffer name) to associate with the process.
1568 Process output (both standard output and standard error streams) goes
1569 at end of BUFFER, unless you specify an output stream or filter
1570 function to handle the output. BUFFER may also be nil, meaning that
1571 this process is not associated with any buffer.
1573 PROGRAM is the program file name. It is searched for in PATH.
1574 Remaining arguments are strings to give program as arguments.
1576 If you want to separate standard output from standard error, invoke
1577 the command through a shell and redirect one of them using the shell
1580 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1583 register Lisp_Object
*args
;
1585 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1587 register unsigned char *new_argv
;
1590 register unsigned char **new_argv
;
1593 int count
= SPECPDL_INDEX ();
1597 buffer
= Fget_buffer_create (buffer
);
1599 /* Make sure that the child will be able to chdir to the current
1600 buffer's current directory, or its unhandled equivalent. We
1601 can't just have the child check for an error when it does the
1602 chdir, since it's in a vfork.
1604 We have to GCPRO around this because Fexpand_file_name and
1605 Funhandled_file_name_directory might call a file name handling
1606 function. The argument list is protected by the caller, so all
1607 we really have to worry about is buffer. */
1609 struct gcpro gcpro1
, gcpro2
;
1611 current_dir
= current_buffer
->directory
;
1613 GCPRO2 (buffer
, current_dir
);
1616 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1618 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1619 report_file_error ("Setting current directory",
1620 Fcons (current_buffer
->directory
, Qnil
));
1626 CHECK_STRING (name
);
1630 CHECK_STRING (program
);
1632 proc
= make_process (name
);
1633 /* If an error occurs and we can't start the process, we want to
1634 remove it from the process list. This means that each error
1635 check in create_process doesn't need to call remove_process
1636 itself; it's all taken care of here. */
1637 record_unwind_protect (start_process_unwind
, proc
);
1639 XPROCESS (proc
)->childp
= Qt
;
1640 XPROCESS (proc
)->plist
= Qnil
;
1641 XPROCESS (proc
)->buffer
= buffer
;
1642 XPROCESS (proc
)->sentinel
= Qnil
;
1643 XPROCESS (proc
)->filter
= Qnil
;
1644 XPROCESS (proc
)->filter_multibyte
1645 = !NILP (buffer_defaults
.enable_multibyte_characters
);
1646 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1648 #ifdef ADAPTIVE_READ_BUFFERING
1649 XPROCESS (proc
)->adaptive_read_buffering
1650 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1651 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1654 /* Make the process marker point into the process buffer (if any). */
1655 if (BUFFERP (buffer
))
1656 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1657 BUF_ZV (XBUFFER (buffer
)),
1658 BUF_ZV_BYTE (XBUFFER (buffer
)));
1661 /* Decide coding systems for communicating with the process. Here
1662 we don't setup the structure coding_system nor pay attention to
1663 unibyte mode. They are done in create_process. */
1665 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1666 Lisp_Object coding_systems
= Qt
;
1667 Lisp_Object val
, *args2
;
1668 struct gcpro gcpro1
, gcpro2
;
1670 val
= Vcoding_system_for_read
;
1673 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1674 args2
[0] = Qstart_process
;
1675 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1676 GCPRO2 (proc
, current_dir
);
1677 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1679 if (CONSP (coding_systems
))
1680 val
= XCAR (coding_systems
);
1681 else if (CONSP (Vdefault_process_coding_system
))
1682 val
= XCAR (Vdefault_process_coding_system
);
1684 XPROCESS (proc
)->decode_coding_system
= val
;
1686 val
= Vcoding_system_for_write
;
1689 if (EQ (coding_systems
, Qt
))
1691 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1692 args2
[0] = Qstart_process
;
1693 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1694 GCPRO2 (proc
, current_dir
);
1695 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1698 if (CONSP (coding_systems
))
1699 val
= XCDR (coding_systems
);
1700 else if (CONSP (Vdefault_process_coding_system
))
1701 val
= XCDR (Vdefault_process_coding_system
);
1703 XPROCESS (proc
)->encode_coding_system
= val
;
1707 /* Make a one member argv with all args concatenated
1708 together separated by a blank. */
1709 len
= SBYTES (program
) + 2;
1710 for (i
= 3; i
< nargs
; i
++)
1714 len
+= SBYTES (tem
) + 1; /* count the blank */
1716 new_argv
= (unsigned char *) alloca (len
);
1717 strcpy (new_argv
, SDATA (program
));
1718 for (i
= 3; i
< nargs
; i
++)
1722 strcat (new_argv
, " ");
1723 strcat (new_argv
, SDATA (tem
));
1725 /* Need to add code here to check for program existence on VMS */
1728 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1730 /* If program file name is not absolute, search our path for it.
1731 Put the name we will really use in TEM. */
1732 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1733 && !(SCHARS (program
) > 1
1734 && IS_DEVICE_SEP (SREF (program
, 1))))
1736 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1739 GCPRO4 (name
, program
, buffer
, current_dir
);
1740 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1743 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1744 tem
= Fexpand_file_name (tem
, Qnil
);
1748 if (!NILP (Ffile_directory_p (program
)))
1749 error ("Specified program for new process is a directory");
1753 /* If program file name starts with /: for quoting a magic name,
1755 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1756 && SREF (tem
, 1) == ':')
1757 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1759 /* Encode the file name and put it in NEW_ARGV.
1760 That's where the child will use it to execute the program. */
1761 tem
= ENCODE_FILE (tem
);
1762 new_argv
[0] = SDATA (tem
);
1764 /* Here we encode arguments by the coding system used for sending
1765 data to the process. We don't support using different coding
1766 systems for encoding arguments and for encoding data sent to the
1769 for (i
= 3; i
< nargs
; i
++)
1773 if (STRING_MULTIBYTE (tem
))
1774 tem
= (code_convert_string_norecord
1775 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1776 new_argv
[i
- 2] = SDATA (tem
);
1778 new_argv
[i
- 2] = 0;
1779 #endif /* not VMS */
1781 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1782 XPROCESS (proc
)->decoding_carryover
= 0;
1783 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1785 XPROCESS (proc
)->inherit_coding_system_flag
1786 = !(NILP (buffer
) || !inherit_process_coding_system
);
1788 create_process (proc
, (char **) new_argv
, current_dir
);
1790 return unbind_to (count
, proc
);
1793 /* This function is the unwind_protect form for Fstart_process. If
1794 PROC doesn't have its pid set, then we know someone has signaled
1795 an error and the process wasn't started successfully, so we should
1796 remove it from the process list. */
1798 start_process_unwind (proc
)
1801 if (!PROCESSP (proc
))
1804 /* Was PROC started successfully? */
1805 if (XPROCESS (proc
)->pid
<= 0)
1806 remove_process (proc
);
1812 create_process_1 (timer
)
1813 struct atimer
*timer
;
1815 /* Nothing to do. */
1819 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1822 /* Mimic blocking of signals on system V, which doesn't really have it. */
1824 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1825 int sigchld_deferred
;
1828 create_process_sigchld ()
1830 signal (SIGCHLD
, create_process_sigchld
);
1832 sigchld_deferred
= 1;
1838 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1840 create_process (process
, new_argv
, current_dir
)
1841 Lisp_Object process
;
1843 Lisp_Object current_dir
;
1845 int inchannel
, outchannel
;
1848 #ifdef POSIX_SIGNALS
1851 struct sigaction sigint_action
;
1852 struct sigaction sigquit_action
;
1854 struct sigaction sighup_action
;
1856 #else /* !POSIX_SIGNALS */
1859 SIGTYPE (*sigchld
)();
1862 #endif /* !POSIX_SIGNALS */
1863 /* Use volatile to protect variables from being clobbered by longjmp. */
1864 volatile int forkin
, forkout
;
1865 volatile int pty_flag
= 0;
1867 extern char **environ
;
1870 inchannel
= outchannel
= -1;
1873 if (!NILP (Vprocess_connection_type
))
1874 outchannel
= inchannel
= allocate_pty ();
1878 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1879 /* On most USG systems it does not work to open the pty's tty here,
1880 then close it and reopen it in the child. */
1882 /* Don't let this terminal become our controlling terminal
1883 (in case we don't have one). */
1884 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1886 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1889 report_file_error ("Opening pty", Qnil
);
1890 #if defined (DONT_REOPEN_PTY)
1891 /* In the case that vfork is defined as fork, the parent process
1892 (Emacs) may send some data before the child process completes
1893 tty options setup. So we setup tty before forking. */
1894 child_setup_tty (forkout
);
1895 #endif /* DONT_REOPEN_PTY */
1897 forkin
= forkout
= -1;
1898 #endif /* not USG, or USG_SUBTTY_WORKS */
1902 #endif /* HAVE_PTYS */
1905 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1906 report_file_error ("Opening socketpair", Qnil
);
1907 outchannel
= inchannel
= sv
[0];
1908 forkout
= forkin
= sv
[1];
1910 #else /* not SKTPAIR */
1915 report_file_error ("Creating pipe", Qnil
);
1921 emacs_close (inchannel
);
1922 emacs_close (forkout
);
1923 report_file_error ("Creating pipe", Qnil
);
1928 #endif /* not SKTPAIR */
1931 /* Replaced by close_process_descs */
1932 set_exclusive_use (inchannel
);
1933 set_exclusive_use (outchannel
);
1937 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1938 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1941 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1942 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1946 /* Record this as an active process, with its channels.
1947 As a result, child_setup will close Emacs's side of the pipes. */
1948 chan_process
[inchannel
] = process
;
1949 XPROCESS (process
)->infd
= inchannel
;
1950 XPROCESS (process
)->outfd
= outchannel
;
1952 /* Previously we recorded the tty descriptor used in the subprocess.
1953 It was only used for getting the foreground tty process, so now
1954 we just reopen the device (see emacs_get_tty_pgrp) as this is
1955 more portable (see USG_SUBTTY_WORKS above). */
1957 XPROCESS (process
)->pty_flag
= pty_flag
;
1958 XPROCESS (process
)->status
= Qrun
;
1959 setup_process_coding_systems (process
);
1961 /* Delay interrupts until we have a chance to store
1962 the new fork's pid in its process structure */
1963 #ifdef POSIX_SIGNALS
1964 sigemptyset (&blocked
);
1966 sigaddset (&blocked
, SIGCHLD
);
1968 #ifdef HAVE_WORKING_VFORK
1969 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1970 this sets the parent's signal handlers as well as the child's.
1971 So delay all interrupts whose handlers the child might munge,
1972 and record the current handlers so they can be restored later. */
1973 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1974 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1976 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1978 #endif /* HAVE_WORKING_VFORK */
1979 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1980 #else /* !POSIX_SIGNALS */
1984 #else /* not BSD4_1 */
1985 #if defined (BSD_SYSTEM) || defined (HPUX)
1986 sigsetmask (sigmask (SIGCHLD
));
1987 #else /* ordinary USG */
1989 sigchld_deferred
= 0;
1990 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1992 #endif /* ordinary USG */
1993 #endif /* not BSD4_1 */
1994 #endif /* SIGCHLD */
1995 #endif /* !POSIX_SIGNALS */
1997 FD_SET (inchannel
, &input_wait_mask
);
1998 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1999 if (inchannel
> max_process_desc
)
2000 max_process_desc
= inchannel
;
2002 /* Until we store the proper pid, enable sigchld_handler
2003 to recognize an unknown pid as standing for this process.
2004 It is very important not to let this `marker' value stay
2005 in the table after this function has returned; if it does
2006 it might cause call-process to hang and subsequent asynchronous
2007 processes to get their return values scrambled. */
2008 XPROCESS (process
)->pid
= -1;
2013 /* child_setup must clobber environ on systems with true vfork.
2014 Protect it from permanent change. */
2015 char **save_environ
= environ
;
2017 current_dir
= ENCODE_FILE (current_dir
);
2022 #endif /* not WINDOWSNT */
2024 int xforkin
= forkin
;
2025 int xforkout
= forkout
;
2027 #if 0 /* This was probably a mistake--it duplicates code later on,
2028 but fails to handle all the cases. */
2029 /* Make sure SIGCHLD is not blocked in the child. */
2030 sigsetmask (SIGEMPTYMASK
);
2033 /* Make the pty be the controlling terminal of the process. */
2035 /* First, disconnect its current controlling terminal. */
2037 /* We tried doing setsid only if pty_flag, but it caused
2038 process_set_signal to fail on SGI when using a pipe. */
2040 /* Make the pty's terminal the controlling terminal. */
2044 /* We ignore the return value
2045 because faith@cs.unc.edu says that is necessary on Linux. */
2046 ioctl (xforkin
, TIOCSCTTY
, 0);
2049 #else /* not HAVE_SETSID */
2051 /* It's very important to call setpgrp here and no time
2052 afterwards. Otherwise, we lose our controlling tty which
2053 is set when we open the pty. */
2056 #endif /* not HAVE_SETSID */
2057 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2058 if (pty_flag
&& xforkin
>= 0)
2061 tcgetattr (xforkin
, &t
);
2063 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2064 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2067 #if defined (NTTYDISC) && defined (TIOCSETD)
2068 if (pty_flag
&& xforkin
>= 0)
2070 /* Use new line discipline. */
2071 int ldisc
= NTTYDISC
;
2072 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2077 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2078 can do TIOCSPGRP only to the process's controlling tty. */
2081 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2082 I can't test it since I don't have 4.3. */
2083 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2084 ioctl (j
, TIOCNOTTY
, 0);
2087 /* In order to get a controlling terminal on some versions
2088 of BSD, it is necessary to put the process in pgrp 0
2089 before it opens the terminal. */
2097 #endif /* TIOCNOTTY */
2099 #if !defined (DONT_REOPEN_PTY)
2100 /*** There is a suggestion that this ought to be a
2101 conditional on TIOCSPGRP,
2102 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2103 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2104 that system does seem to need this code, even though
2105 both HAVE_SETSID and TIOCSCTTY are defined. */
2106 /* Now close the pty (if we had it open) and reopen it.
2107 This makes the pty the controlling terminal of the subprocess. */
2110 #ifdef SET_CHILD_PTY_PGRP
2111 int pgrp
= getpid ();
2114 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2117 emacs_close (xforkin
);
2118 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2122 emacs_write (1, "Couldn't open the pty terminal ", 31);
2123 emacs_write (1, pty_name
, strlen (pty_name
));
2124 emacs_write (1, "\n", 1);
2128 #ifdef SET_CHILD_PTY_PGRP
2129 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2130 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2133 #endif /* not DONT_REOPEN_PTY */
2135 #ifdef SETUP_SLAVE_PTY
2140 #endif /* SETUP_SLAVE_PTY */
2142 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2143 Now reenable it in the child, so it will die when we want it to. */
2145 signal (SIGHUP
, SIG_DFL
);
2147 #endif /* HAVE_PTYS */
2149 signal (SIGINT
, SIG_DFL
);
2150 signal (SIGQUIT
, SIG_DFL
);
2152 /* Stop blocking signals in the child. */
2153 #ifdef POSIX_SIGNALS
2154 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2155 #else /* !POSIX_SIGNALS */
2159 #else /* not BSD4_1 */
2160 #if defined (BSD_SYSTEM) || defined (HPUX)
2161 sigsetmask (SIGEMPTYMASK
);
2162 #else /* ordinary USG */
2164 signal (SIGCHLD
, sigchld
);
2166 #endif /* ordinary USG */
2167 #endif /* not BSD4_1 */
2168 #endif /* SIGCHLD */
2169 #endif /* !POSIX_SIGNALS */
2171 #if !defined (DONT_REOPEN_PTY)
2173 child_setup_tty (xforkout
);
2174 #endif /* not DONT_REOPEN_PTY */
2176 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2177 new_argv
, 1, current_dir
);
2178 #else /* not WINDOWSNT */
2179 child_setup (xforkin
, xforkout
, xforkout
,
2180 new_argv
, 1, current_dir
);
2181 #endif /* not WINDOWSNT */
2183 environ
= save_environ
;
2188 /* This runs in the Emacs process. */
2192 emacs_close (forkin
);
2193 if (forkin
!= forkout
&& forkout
>= 0)
2194 emacs_close (forkout
);
2198 /* vfork succeeded. */
2199 XPROCESS (process
)->pid
= pid
;
2202 register_child (pid
, inchannel
);
2203 #endif /* WINDOWSNT */
2205 /* If the subfork execv fails, and it exits,
2206 this close hangs. I don't know why.
2207 So have an interrupt jar it loose. */
2209 struct atimer
*timer
;
2213 EMACS_SET_SECS_USECS (offset
, 1, 0);
2214 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2217 emacs_close (forkin
);
2219 cancel_atimer (timer
);
2223 if (forkin
!= forkout
&& forkout
>= 0)
2224 emacs_close (forkout
);
2228 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2231 XPROCESS (process
)->tty_name
= Qnil
;
2234 /* Restore the signal state whether vfork succeeded or not.
2235 (We will signal an error, below, if it failed.) */
2236 #ifdef POSIX_SIGNALS
2237 #ifdef HAVE_WORKING_VFORK
2238 /* Restore the parent's signal handlers. */
2239 sigaction (SIGINT
, &sigint_action
, 0);
2240 sigaction (SIGQUIT
, &sigquit_action
, 0);
2242 sigaction (SIGHUP
, &sighup_action
, 0);
2244 #endif /* HAVE_WORKING_VFORK */
2245 /* Stop blocking signals in the parent. */
2246 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2247 #else /* !POSIX_SIGNALS */
2251 #else /* not BSD4_1 */
2252 #if defined (BSD_SYSTEM) || defined (HPUX)
2253 sigsetmask (SIGEMPTYMASK
);
2254 #else /* ordinary USG */
2256 signal (SIGCHLD
, sigchld
);
2257 /* Now really handle any of these signals
2258 that came in during this function. */
2259 if (sigchld_deferred
)
2260 kill (getpid (), SIGCHLD
);
2262 #endif /* ordinary USG */
2263 #endif /* not BSD4_1 */
2264 #endif /* SIGCHLD */
2265 #endif /* !POSIX_SIGNALS */
2267 /* Now generate the error if vfork failed. */
2269 report_file_error ("Doing vfork", Qnil
);
2271 #endif /* not VMS */
2276 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2277 The address family of sa is not included in the result. */
2280 conv_sockaddr_to_lisp (sa
, len
)
2281 struct sockaddr
*sa
;
2284 Lisp_Object address
;
2287 register struct Lisp_Vector
*p
;
2289 switch (sa
->sa_family
)
2293 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2294 len
= sizeof (sin
->sin_addr
) + 1;
2295 address
= Fmake_vector (make_number (len
), Qnil
);
2296 p
= XVECTOR (address
);
2297 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2298 cp
= (unsigned char *)&sin
->sin_addr
;
2304 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2305 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2306 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2307 address
= Fmake_vector (make_number (len
), Qnil
);
2308 p
= XVECTOR (address
);
2309 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2310 for (i
= 0; i
< len
; i
++)
2311 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2315 #ifdef HAVE_LOCAL_SOCKETS
2318 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2319 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2320 if (sockun
->sun_path
[i
] == 0)
2322 return make_unibyte_string (sockun
->sun_path
, i
);
2326 len
-= sizeof (sa
->sa_family
);
2327 address
= Fcons (make_number (sa
->sa_family
),
2328 Fmake_vector (make_number (len
), Qnil
));
2329 p
= XVECTOR (XCDR (address
));
2330 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2336 p
->contents
[i
++] = make_number (*cp
++);
2342 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2345 get_lisp_to_sockaddr_size (address
, familyp
)
2346 Lisp_Object address
;
2349 register struct Lisp_Vector
*p
;
2351 if (VECTORP (address
))
2353 p
= XVECTOR (address
);
2357 return sizeof (struct sockaddr_in
);
2360 else if (p
->size
== 9)
2362 *familyp
= AF_INET6
;
2363 return sizeof (struct sockaddr_in6
);
2367 #ifdef HAVE_LOCAL_SOCKETS
2368 else if (STRINGP (address
))
2370 *familyp
= AF_LOCAL
;
2371 return sizeof (struct sockaddr_un
);
2374 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2376 struct sockaddr
*sa
;
2377 *familyp
= XINT (XCAR (address
));
2378 p
= XVECTOR (XCDR (address
));
2379 return p
->size
+ sizeof (sa
->sa_family
);
2384 /* Convert an address object (vector or string) to an internal sockaddr.
2386 The address format has been basically validated by
2387 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2388 it could have come from user data. So if FAMILY is not valid,
2389 we return after zeroing *SA. */
2392 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2394 Lisp_Object address
;
2395 struct sockaddr
*sa
;
2398 register struct Lisp_Vector
*p
;
2399 register unsigned char *cp
= NULL
;
2404 if (VECTORP (address
))
2406 p
= XVECTOR (address
);
2407 if (family
== AF_INET
)
2409 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2410 len
= sizeof (sin
->sin_addr
) + 1;
2411 i
= XINT (p
->contents
[--len
]);
2412 sin
->sin_port
= htons (i
);
2413 cp
= (unsigned char *)&sin
->sin_addr
;
2414 sa
->sa_family
= family
;
2417 else if (family
== AF_INET6
)
2419 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2420 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2421 len
= sizeof (sin6
->sin6_addr
) + 1;
2422 i
= XINT (p
->contents
[--len
]);
2423 sin6
->sin6_port
= htons (i
);
2424 for (i
= 0; i
< len
; i
++)
2425 if (INTEGERP (p
->contents
[i
]))
2427 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2430 sa
->sa_family
= family
;
2435 else if (STRINGP (address
))
2437 #ifdef HAVE_LOCAL_SOCKETS
2438 if (family
== AF_LOCAL
)
2440 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2441 cp
= SDATA (address
);
2442 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2443 sockun
->sun_path
[i
] = *cp
++;
2444 sa
->sa_family
= family
;
2451 p
= XVECTOR (XCDR (address
));
2452 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2455 for (i
= 0; i
< len
; i
++)
2456 if (INTEGERP (p
->contents
[i
]))
2457 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2460 #ifdef DATAGRAM_SOCKETS
2461 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2463 doc
: /* Get the current datagram address associated with PROCESS. */)
2465 Lisp_Object process
;
2469 CHECK_PROCESS (process
);
2471 if (!DATAGRAM_CONN_P (process
))
2474 channel
= XPROCESS (process
)->infd
;
2475 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2476 datagram_address
[channel
].len
);
2479 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2481 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2482 Returns nil upon error setting address, ADDRESS otherwise. */)
2484 Lisp_Object process
, address
;
2489 CHECK_PROCESS (process
);
2491 if (!DATAGRAM_CONN_P (process
))
2494 channel
= XPROCESS (process
)->infd
;
2496 len
= get_lisp_to_sockaddr_size (address
, &family
);
2497 if (datagram_address
[channel
].len
!= len
)
2499 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2505 static struct socket_options
{
2506 /* The name of this option. Should be lowercase version of option
2507 name without SO_ prefix. */
2509 /* Option level SOL_... */
2511 /* Option number SO_... */
2513 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2514 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2515 } socket_options
[] =
2517 #ifdef SO_BINDTODEVICE
2518 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2521 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2524 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2527 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2530 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2533 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2536 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2539 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2541 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2544 /* Set option OPT to value VAL on socket S.
2546 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2547 Signals an error if setting a known option fails.
2551 set_socket_option (s
, opt
, val
)
2553 Lisp_Object opt
, val
;
2556 struct socket_options
*sopt
;
2561 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2562 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2563 if (strcmp (name
, sopt
->name
) == 0)
2566 switch (sopt
->opttype
)
2571 optval
= NILP (val
) ? 0 : 1;
2572 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2573 &optval
, sizeof (optval
));
2581 optval
= XINT (val
);
2583 error ("Bad option value for %s", name
);
2584 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2585 &optval
, sizeof (optval
));
2589 #ifdef SO_BINDTODEVICE
2592 char devname
[IFNAMSIZ
+1];
2594 /* This is broken, at least in the Linux 2.4 kernel.
2595 To unbind, the arg must be a zero integer, not the empty string.
2596 This should work on all systems. KFS. 2003-09-23. */
2597 bzero (devname
, sizeof devname
);
2600 char *arg
= (char *) SDATA (val
);
2601 int len
= min (strlen (arg
), IFNAMSIZ
);
2602 bcopy (arg
, devname
, len
);
2604 else if (!NILP (val
))
2605 error ("Bad option value for %s", name
);
2606 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2615 struct linger linger
;
2618 linger
.l_linger
= 0;
2620 linger
.l_linger
= XINT (val
);
2622 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2623 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2624 &linger
, sizeof (linger
));
2634 report_file_error ("Cannot set network option",
2635 Fcons (opt
, Fcons (val
, Qnil
)));
2636 return (1 << sopt
->optbit
);
2640 DEFUN ("set-network-process-option",
2641 Fset_network_process_option
, Sset_network_process_option
,
2643 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2644 See `make-network-process' for a list of options and values.
2645 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2646 OPTION is not a supported option, return nil instead; otherwise return t. */)
2647 (process
, option
, value
, no_error
)
2648 Lisp_Object process
, option
, value
;
2649 Lisp_Object no_error
;
2652 struct Lisp_Process
*p
;
2654 CHECK_PROCESS (process
);
2655 p
= XPROCESS (process
);
2656 if (!NETCONN1_P (p
))
2657 error ("Process is not a network process");
2661 error ("Process is not running");
2663 if (set_socket_option (s
, option
, value
))
2665 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2669 if (NILP (no_error
))
2670 error ("Unknown or unsupported option");
2676 /* A version of request_sigio suitable for a record_unwind_protect. */
2680 unwind_request_sigio (dummy
)
2683 if (interrupt_input
)
2689 /* Create a network stream/datagram client/server process. Treated
2690 exactly like a normal process when reading and writing. Primary
2691 differences are in status display and process deletion. A network
2692 connection has no PID; you cannot signal it. All you can do is
2693 stop/continue it and deactivate/close it via delete-process */
2695 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2697 doc
: /* Create and return a network server or client process.
2699 In Emacs, network connections are represented by process objects, so
2700 input and output work as for subprocesses and `delete-process' closes
2701 a network connection. However, a network process has no process id,
2702 it cannot be signaled, and the status codes are different from normal
2705 Arguments are specified as keyword/argument pairs. The following
2706 arguments are defined:
2708 :name NAME -- NAME is name for process. It is modified if necessary
2711 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2712 with the process. Process output goes at end of that buffer, unless
2713 you specify an output stream or filter function to handle the output.
2714 BUFFER may be also nil, meaning that this process is not associated
2717 :host HOST -- HOST is name of the host to connect to, or its IP
2718 address. The symbol `local' specifies the local host. If specified
2719 for a server process, it must be a valid name or address for the local
2720 host, and only clients connecting to that address will be accepted.
2722 :service SERVICE -- SERVICE is name of the service desired, or an
2723 integer specifying a port number to connect to. If SERVICE is t,
2724 a random port number is selected for the server. (If Emacs was
2725 compiled with getaddrinfo, a port number can also be specified as a
2726 string, e.g. "80", as well as an integer. This is not portable.)
2728 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2729 stream type connection, `datagram' creates a datagram type connection.
2731 :family FAMILY -- FAMILY is the address (and protocol) family for the
2732 service specified by HOST and SERVICE. The default (nil) is to use
2733 whatever address family (IPv4 or IPv6) that is defined for the host
2734 and port number specified by HOST and SERVICE. Other address families
2736 local -- for a local (i.e. UNIX) address specified by SERVICE.
2737 ipv4 -- use IPv4 address family only.
2738 ipv6 -- use IPv6 address family only.
2740 :local ADDRESS -- ADDRESS is the local address used for the connection.
2741 This parameter is ignored when opening a client process. When specified
2742 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2744 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2745 connection. This parameter is ignored when opening a stream server
2746 process. For a datagram server process, it specifies the initial
2747 setting of the remote datagram address. When specified for a client
2748 process, the FAMILY, HOST, and SERVICE args are ignored.
2750 The format of ADDRESS depends on the address family:
2751 - An IPv4 address is represented as an vector of integers [A B C D P]
2752 corresponding to numeric IP address A.B.C.D and port number P.
2753 - A local address is represented as a string with the address in the
2754 local address space.
2755 - An "unsupported family" address is represented by a cons (F . AV)
2756 where F is the family number and AV is a vector containing the socket
2757 address data with one element per address data byte. Do not rely on
2758 this format in portable code, as it may depend on implementation
2759 defined constants, data sizes, and data structure alignment.
2761 :coding CODING -- If CODING is a symbol, it specifies the coding
2762 system used for both reading and writing for this process. If CODING
2763 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2764 ENCODING is used for writing.
2766 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2767 return without waiting for the connection to complete; instead, the
2768 sentinel function will be called with second arg matching "open" (if
2769 successful) or "failed" when the connect completes. Default is to use
2770 a blocking connect (i.e. wait) for stream type connections.
2772 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2773 running when Emacs is exited.
2775 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2776 In the stopped state, a server process does not accept new
2777 connections, and a client process does not handle incoming traffic.
2778 The stopped state is cleared by `continue-process' and set by
2781 :filter FILTER -- Install FILTER as the process filter.
2783 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2784 process filter are multibyte, otherwise they are unibyte.
2785 If this keyword is not specified, the strings are multibyte if
2786 `default-enable-multibyte-characters' is non-nil.
2788 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2790 :log LOG -- Install LOG as the server process log function. This
2791 function is called when the server accepts a network connection from a
2792 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2793 is the server process, CLIENT is the new process for the connection,
2794 and MESSAGE is a string.
2796 :plist PLIST -- Install PLIST as the new process' initial plist.
2798 :server QLEN -- if QLEN is non-nil, create a server process for the
2799 specified FAMILY, SERVICE, and connection type (stream or datagram).
2800 If QLEN is an integer, it is used as the max. length of the server's
2801 pending connection queue (also known as the backlog); the default
2802 queue length is 5. Default is to create a client process.
2804 The following network options can be specified for this connection:
2806 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2807 :dontroute BOOL -- Only send to directly connected hosts.
2808 :keepalive BOOL -- Send keep-alive messages on network stream.
2809 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2810 :oobinline BOOL -- Place out-of-band data in receive data stream.
2811 :priority INT -- Set protocol defined priority for sent packets.
2812 :reuseaddr BOOL -- Allow reusing a recently used local address
2813 (this is allowed by default for a server process).
2814 :bindtodevice NAME -- bind to interface NAME. Using this may require
2815 special privileges on some systems.
2817 Consult the relevant system programmer's manual pages for more
2818 information on using these options.
2821 A server process will listen for and accept connections from clients.
2822 When a client connection is accepted, a new network process is created
2823 for the connection with the following parameters:
2825 - The client's process name is constructed by concatenating the server
2826 process' NAME and a client identification string.
2827 - If the FILTER argument is non-nil, the client process will not get a
2828 separate process buffer; otherwise, the client's process buffer is a newly
2829 created buffer named after the server process' BUFFER name or process
2830 NAME concatenated with the client identification string.
2831 - The connection type and the process filter and sentinel parameters are
2832 inherited from the server process' TYPE, FILTER and SENTINEL.
2833 - The client process' contact info is set according to the client's
2834 addressing information (typically an IP address and a port number).
2835 - The client process' plist is initialized from the server's plist.
2837 Notice that the FILTER and SENTINEL args are never used directly by
2838 the server process. Also, the BUFFER argument is not used directly by
2839 the server process, but via the optional :log function, accepted (and
2840 failed) connections may be logged in the server process' buffer.
2842 The original argument list, modified with the actual connection
2843 information, is available via the `process-contact' function.
2845 usage: (make-network-process &rest ARGS) */)
2851 Lisp_Object contact
;
2852 struct Lisp_Process
*p
;
2853 #ifdef HAVE_GETADDRINFO
2854 struct addrinfo ai
, *res
, *lres
;
2855 struct addrinfo hints
;
2856 char *portstring
, portbuf
[128];
2857 #else /* HAVE_GETADDRINFO */
2858 struct _emacs_addrinfo
2864 struct sockaddr
*ai_addr
;
2865 struct _emacs_addrinfo
*ai_next
;
2867 #endif /* HAVE_GETADDRINFO */
2868 struct sockaddr_in address_in
;
2869 #ifdef HAVE_LOCAL_SOCKETS
2870 struct sockaddr_un address_un
;
2875 int s
= -1, outch
, inch
;
2876 struct gcpro gcpro1
;
2877 int count
= SPECPDL_INDEX ();
2879 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2881 Lisp_Object name
, buffer
, host
, service
, address
;
2882 Lisp_Object filter
, sentinel
;
2883 int is_non_blocking_client
= 0;
2884 int is_server
= 0, backlog
= 5;
2891 /* Save arguments for process-contact and clone-process. */
2892 contact
= Flist (nargs
, args
);
2896 /* Ensure socket support is loaded if available. */
2897 init_winsock (TRUE
);
2900 /* :type TYPE (nil: stream, datagram */
2901 tem
= Fplist_get (contact
, QCtype
);
2903 socktype
= SOCK_STREAM
;
2904 #ifdef DATAGRAM_SOCKETS
2905 else if (EQ (tem
, Qdatagram
))
2906 socktype
= SOCK_DGRAM
;
2909 error ("Unsupported connection type");
2912 tem
= Fplist_get (contact
, QCserver
);
2915 /* Don't support network sockets when non-blocking mode is
2916 not available, since a blocked Emacs is not useful. */
2917 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2918 error ("Network servers not supported");
2922 backlog
= XINT (tem
);
2926 /* Make QCaddress an alias for :local (server) or :remote (client). */
2927 QCaddress
= is_server
? QClocal
: QCremote
;
2930 if (!is_server
&& socktype
== SOCK_STREAM
2931 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2933 #ifndef NON_BLOCKING_CONNECT
2934 error ("Non-blocking connect not supported");
2936 is_non_blocking_client
= 1;
2940 name
= Fplist_get (contact
, QCname
);
2941 buffer
= Fplist_get (contact
, QCbuffer
);
2942 filter
= Fplist_get (contact
, QCfilter
);
2943 sentinel
= Fplist_get (contact
, QCsentinel
);
2945 CHECK_STRING (name
);
2948 /* Let's handle TERM before things get complicated ... */
2949 host
= Fplist_get (contact
, QChost
);
2950 CHECK_STRING (host
);
2952 service
= Fplist_get (contact
, QCservice
);
2953 if (INTEGERP (service
))
2954 port
= htons ((unsigned short) XINT (service
));
2957 struct servent
*svc_info
;
2958 CHECK_STRING (service
);
2959 svc_info
= getservbyname (SDATA (service
), "tcp");
2961 error ("Unknown service: %s", SDATA (service
));
2962 port
= svc_info
->s_port
;
2965 s
= connect_server (0);
2967 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2968 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2969 send_command (s
, C_DUMB
, 1, 0);
2971 #else /* not TERM */
2973 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2974 ai
.ai_socktype
= socktype
;
2979 /* :local ADDRESS or :remote ADDRESS */
2980 address
= Fplist_get (contact
, QCaddress
);
2981 if (!NILP (address
))
2983 host
= service
= Qnil
;
2985 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2986 error ("Malformed :address");
2987 ai
.ai_family
= family
;
2988 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2989 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2993 /* :family FAMILY -- nil (for Inet), local, or integer. */
2994 tem
= Fplist_get (contact
, QCfamily
);
2997 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3003 #ifdef HAVE_LOCAL_SOCKETS
3004 else if (EQ (tem
, Qlocal
))
3008 else if (EQ (tem
, Qipv6
))
3011 else if (EQ (tem
, Qipv4
))
3013 else if (INTEGERP (tem
))
3014 family
= XINT (tem
);
3016 error ("Unknown address family");
3018 ai
.ai_family
= family
;
3020 /* :service SERVICE -- string, integer (port number), or t (random port). */
3021 service
= Fplist_get (contact
, QCservice
);
3023 #ifdef HAVE_LOCAL_SOCKETS
3024 if (family
== AF_LOCAL
)
3026 /* Host is not used. */
3028 CHECK_STRING (service
);
3029 bzero (&address_un
, sizeof address_un
);
3030 address_un
.sun_family
= AF_LOCAL
;
3031 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3032 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3033 ai
.ai_addrlen
= sizeof address_un
;
3038 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3039 host
= Fplist_get (contact
, QChost
);
3042 if (EQ (host
, Qlocal
))
3043 host
= build_string ("localhost");
3044 CHECK_STRING (host
);
3047 /* Slow down polling to every ten seconds.
3048 Some kernels have a bug which causes retrying connect to fail
3049 after a connect. Polling can interfere with gethostbyname too. */
3050 #ifdef POLL_FOR_INPUT
3051 if (socktype
== SOCK_STREAM
)
3053 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3054 bind_polling_period (10);
3058 #ifdef HAVE_GETADDRINFO
3059 /* If we have a host, use getaddrinfo to resolve both host and service.
3060 Otherwise, use getservbyname to lookup the service. */
3064 /* SERVICE can either be a string or int.
3065 Convert to a C string for later use by getaddrinfo. */
3066 if (EQ (service
, Qt
))
3068 else if (INTEGERP (service
))
3070 sprintf (portbuf
, "%ld", (long) XINT (service
));
3071 portstring
= portbuf
;
3075 CHECK_STRING (service
);
3076 portstring
= SDATA (service
);
3081 memset (&hints
, 0, sizeof (hints
));
3083 hints
.ai_family
= family
;
3084 hints
.ai_socktype
= socktype
;
3085 hints
.ai_protocol
= 0;
3087 #ifdef HAVE_RES_INIT
3091 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3093 #ifdef HAVE_GAI_STRERROR
3094 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3096 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3102 #endif /* HAVE_GETADDRINFO */
3104 /* We end up here if getaddrinfo is not defined, or in case no hostname
3105 has been specified (e.g. for a local server process). */
3107 if (EQ (service
, Qt
))
3109 else if (INTEGERP (service
))
3110 port
= htons ((unsigned short) XINT (service
));
3113 struct servent
*svc_info
;
3114 CHECK_STRING (service
);
3115 svc_info
= getservbyname (SDATA (service
),
3116 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3118 error ("Unknown service: %s", SDATA (service
));
3119 port
= svc_info
->s_port
;
3122 bzero (&address_in
, sizeof address_in
);
3123 address_in
.sin_family
= family
;
3124 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3125 address_in
.sin_port
= port
;
3127 #ifndef HAVE_GETADDRINFO
3130 struct hostent
*host_info_ptr
;
3132 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3133 as it may `hang' Emacs for a very long time. */
3137 #ifdef HAVE_RES_INIT
3141 host_info_ptr
= gethostbyname (SDATA (host
));
3146 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3147 host_info_ptr
->h_length
);
3148 family
= host_info_ptr
->h_addrtype
;
3149 address_in
.sin_family
= family
;
3152 /* Attempt to interpret host as numeric inet address */
3154 IN_ADDR numeric_addr
;
3155 numeric_addr
= inet_addr ((char *) SDATA (host
));
3156 if (NUMERIC_ADDR_ERROR
)
3157 error ("Unknown host \"%s\"", SDATA (host
));
3159 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3160 sizeof (address_in
.sin_addr
));
3164 #endif /* not HAVE_GETADDRINFO */
3166 ai
.ai_family
= family
;
3167 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3168 ai
.ai_addrlen
= sizeof address_in
;
3173 /* Previously this was compiled unconditionally, but that seems
3174 unnecessary on modern systems, and `unrequest_sigio' was a noop
3175 under X anyway. --lorentey */
3176 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3177 when connect is interrupted. So let's not let it get interrupted.
3178 Note we do not turn off polling, because polling is only used
3179 when not interrupt_input, and thus not normally used on the systems
3180 which have this bug. On systems which use polling, there's no way
3181 to quit if polling is turned off. */
3183 && !is_server
&& socktype
== SOCK_STREAM
)
3185 /* Comment from KFS: The original open-network-stream code
3186 didn't unwind protect this, but it seems like the proper
3187 thing to do. In any case, I don't see how it could harm to
3188 do this -- and it makes cleanup (using unbind_to) easier. */
3189 record_unwind_protect (unwind_request_sigio
, Qnil
);
3194 /* Do this in case we never enter the for-loop below. */
3195 count1
= SPECPDL_INDEX ();
3198 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3204 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3211 #ifdef DATAGRAM_SOCKETS
3212 if (!is_server
&& socktype
== SOCK_DGRAM
)
3214 #endif /* DATAGRAM_SOCKETS */
3216 #ifdef NON_BLOCKING_CONNECT
3217 if (is_non_blocking_client
)
3220 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3222 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3234 /* Make us close S if quit. */
3235 record_unwind_protect (close_file_unwind
, make_number (s
));
3237 /* Parse network options in the arg list.
3238 We simply ignore anything which isn't a known option (including other keywords).
3239 An error is signalled if setting a known option fails. */
3240 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3241 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3245 /* Configure as a server socket. */
3247 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3248 explicit :reuseaddr key to override this. */
3249 #ifdef HAVE_LOCAL_SOCKETS
3250 if (family
!= AF_LOCAL
)
3252 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3255 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3256 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3259 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3260 report_file_error ("Cannot bind server socket", Qnil
);
3262 #ifdef HAVE_GETSOCKNAME
3263 if (EQ (service
, Qt
))
3265 struct sockaddr_in sa1
;
3266 int len1
= sizeof (sa1
);
3267 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3269 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3270 service
= make_number (ntohs (sa1
.sin_port
));
3271 contact
= Fplist_put (contact
, QCservice
, service
);
3276 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3277 report_file_error ("Cannot listen on server socket", Qnil
);
3285 /* This turns off all alarm-based interrupts; the
3286 bind_polling_period call above doesn't always turn all the
3287 short-interval ones off, especially if interrupt_input is
3290 It'd be nice to be able to control the connect timeout
3291 though. Would non-blocking connect calls be portable?
3293 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3295 turn_on_atimers (0);
3297 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3300 turn_on_atimers (1);
3302 if (ret
== 0 || xerrno
== EISCONN
)
3304 /* The unwind-protect will be discarded afterwards.
3305 Likewise for immediate_quit. */
3309 #ifdef NON_BLOCKING_CONNECT
3311 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3315 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3323 /* Discard the unwind protect closing S. */
3324 specpdl_ptr
= specpdl
+ count1
;
3328 if (xerrno
== EINTR
)
3334 #ifdef DATAGRAM_SOCKETS
3335 if (socktype
== SOCK_DGRAM
)
3337 if (datagram_address
[s
].sa
)
3339 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3340 datagram_address
[s
].len
= lres
->ai_addrlen
;
3344 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3345 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3348 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3349 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3350 conv_lisp_to_sockaddr (rfamily
, remote
,
3351 datagram_address
[s
].sa
, rlen
);
3355 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3358 contact
= Fplist_put (contact
, QCaddress
,
3359 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3360 #ifdef HAVE_GETSOCKNAME
3363 struct sockaddr_in sa1
;
3364 int len1
= sizeof (sa1
);
3365 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3366 contact
= Fplist_put (contact
, QClocal
,
3367 conv_sockaddr_to_lisp (&sa1
, len1
));
3374 #ifdef HAVE_GETADDRINFO
3383 /* Discard the unwind protect for closing S, if any. */
3384 specpdl_ptr
= specpdl
+ count1
;
3386 /* Unwind bind_polling_period and request_sigio. */
3387 unbind_to (count
, Qnil
);
3391 /* If non-blocking got this far - and failed - assume non-blocking is
3392 not supported after all. This is probably a wrong assumption, but
3393 the normal blocking calls to open-network-stream handles this error
3395 if (is_non_blocking_client
)
3400 report_file_error ("make server process failed", contact
);
3402 report_file_error ("make client process failed", contact
);
3405 #endif /* not TERM */
3411 buffer
= Fget_buffer_create (buffer
);
3412 proc
= make_process (name
);
3414 chan_process
[inch
] = proc
;
3417 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3420 fcntl (inch
, F_SETFL
, O_NDELAY
);
3424 p
= XPROCESS (proc
);
3426 p
->childp
= contact
;
3427 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3430 p
->sentinel
= sentinel
;
3432 p
->filter_multibyte
= !NILP (buffer_defaults
.enable_multibyte_characters
);
3433 /* Override the above only if :filter-multibyte is specified. */
3434 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3435 p
->filter_multibyte
= !NILP (Fplist_get (contact
, QCfilter_multibyte
));
3436 p
->log
= Fplist_get (contact
, QClog
);
3437 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3438 p
->kill_without_query
= 1;
3439 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3444 if (is_server
&& socktype
== SOCK_STREAM
)
3445 p
->status
= Qlisten
;
3447 /* Make the process marker point into the process buffer (if any). */
3448 if (BUFFERP (buffer
))
3449 set_marker_both (p
->mark
, buffer
,
3450 BUF_ZV (XBUFFER (buffer
)),
3451 BUF_ZV_BYTE (XBUFFER (buffer
)));
3453 #ifdef NON_BLOCKING_CONNECT
3454 if (is_non_blocking_client
)
3456 /* We may get here if connect did succeed immediately. However,
3457 in that case, we still need to signal this like a non-blocking
3459 p
->status
= Qconnect
;
3460 if (!FD_ISSET (inch
, &connect_wait_mask
))
3462 FD_SET (inch
, &connect_wait_mask
);
3463 num_pending_connects
++;
3468 /* A server may have a client filter setting of Qt, but it must
3469 still listen for incoming connects unless it is stopped. */
3470 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3471 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3473 FD_SET (inch
, &input_wait_mask
);
3474 FD_SET (inch
, &non_keyboard_wait_mask
);
3477 if (inch
> max_process_desc
)
3478 max_process_desc
= inch
;
3480 tem
= Fplist_member (contact
, QCcoding
);
3481 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3482 tem
= Qnil
; /* No error message (too late!). */
3485 /* Setup coding systems for communicating with the network stream. */
3486 struct gcpro gcpro1
;
3487 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3488 Lisp_Object coding_systems
= Qt
;
3489 Lisp_Object args
[5], val
;
3493 val
= XCAR (XCDR (tem
));
3497 else if (!NILP (Vcoding_system_for_read
))
3498 val
= Vcoding_system_for_read
;
3499 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3500 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3501 /* We dare not decode end-of-line format by setting VAL to
3502 Qraw_text, because the existing Emacs Lisp libraries
3503 assume that they receive bare code including a sequene of
3508 if (NILP (host
) || NILP (service
))
3509 coding_systems
= Qnil
;
3512 args
[0] = Qopen_network_stream
, args
[1] = name
,
3513 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3515 coding_systems
= Ffind_operation_coding_system (5, args
);
3518 if (CONSP (coding_systems
))
3519 val
= XCAR (coding_systems
);
3520 else if (CONSP (Vdefault_process_coding_system
))
3521 val
= XCAR (Vdefault_process_coding_system
);
3525 p
->decode_coding_system
= val
;
3529 val
= XCAR (XCDR (tem
));
3533 else if (!NILP (Vcoding_system_for_write
))
3534 val
= Vcoding_system_for_write
;
3535 else if (NILP (current_buffer
->enable_multibyte_characters
))
3539 if (EQ (coding_systems
, Qt
))
3541 if (NILP (host
) || NILP (service
))
3542 coding_systems
= Qnil
;
3545 args
[0] = Qopen_network_stream
, args
[1] = name
,
3546 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3548 coding_systems
= Ffind_operation_coding_system (5, args
);
3552 if (CONSP (coding_systems
))
3553 val
= XCDR (coding_systems
);
3554 else if (CONSP (Vdefault_process_coding_system
))
3555 val
= XCDR (Vdefault_process_coding_system
);
3559 p
->encode_coding_system
= val
;
3561 setup_process_coding_systems (proc
);
3563 p
->decoding_buf
= make_uninit_string (0);
3564 p
->decoding_carryover
= 0;
3565 p
->encoding_buf
= make_uninit_string (0);
3567 p
->inherit_coding_system_flag
3568 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3573 #endif /* HAVE_SOCKETS */
3576 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3579 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3580 doc
: /* Return an alist of all network interfaces and their network address.
3581 Each element is a cons, the car of which is a string containing the
3582 interface name, and the cdr is the network address in internal
3583 format; see the description of ADDRESS in `make-network-process'. */)
3586 struct ifconf ifconf
;
3587 struct ifreq
*ifreqs
= NULL
;
3592 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3598 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3599 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3606 ifconf
.ifc_len
= buf_size
;
3607 ifconf
.ifc_req
= ifreqs
;
3608 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3614 if (ifconf
.ifc_len
== buf_size
)
3618 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3621 while (--ifaces
>= 0)
3623 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3624 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3625 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3627 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3628 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3629 res
= Fcons (Fcons (build_string (namebuf
),
3630 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3631 sizeof (struct sockaddr
))),
3637 #endif /* SIOCGIFCONF */
3639 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3646 static struct ifflag_def ifflag_table
[] = {
3650 #ifdef IFF_BROADCAST
3651 { IFF_BROADCAST
, "broadcast" },
3654 { IFF_DEBUG
, "debug" },
3657 { IFF_LOOPBACK
, "loopback" },
3659 #ifdef IFF_POINTOPOINT
3660 { IFF_POINTOPOINT
, "pointopoint" },
3663 { IFF_RUNNING
, "running" },
3666 { IFF_NOARP
, "noarp" },
3669 { IFF_PROMISC
, "promisc" },
3671 #ifdef IFF_NOTRAILERS
3672 { IFF_NOTRAILERS
, "notrailers" },
3675 { IFF_ALLMULTI
, "allmulti" },
3678 { IFF_MASTER
, "master" },
3681 { IFF_SLAVE
, "slave" },
3683 #ifdef IFF_MULTICAST
3684 { IFF_MULTICAST
, "multicast" },
3687 { IFF_PORTSEL
, "portsel" },
3689 #ifdef IFF_AUTOMEDIA
3690 { IFF_AUTOMEDIA
, "automedia" },
3693 { IFF_DYNAMIC
, "dynamic" },
3696 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3699 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3702 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3705 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3708 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3713 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3714 doc
: /* Return information about network interface named IFNAME.
3715 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3716 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3717 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3718 FLAGS is the current flags of the interface. */)
3723 Lisp_Object res
= Qnil
;
3728 CHECK_STRING (ifname
);
3730 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3731 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3733 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3738 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3739 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3741 int flags
= rq
.ifr_flags
;
3742 struct ifflag_def
*fp
;
3746 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3748 if (flags
& fp
->flag_bit
)
3750 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3751 flags
-= fp
->flag_bit
;
3754 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3756 if (flags
& (1 << fnum
))
3758 elt
= Fcons (make_number (fnum
), elt
);
3763 res
= Fcons (elt
, res
);
3766 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3767 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3769 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3770 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3774 for (n
= 0; n
< 6; n
++)
3775 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3776 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3779 res
= Fcons (elt
, res
);
3782 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3783 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3786 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3787 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3789 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3793 res
= Fcons (elt
, res
);
3796 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3797 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3800 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3803 res
= Fcons (elt
, res
);
3806 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3807 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3810 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3813 res
= Fcons (elt
, res
);
3817 return any
? res
: Qnil
;
3820 #endif /* HAVE_SOCKETS */
3822 /* Turn off input and output for process PROC. */
3825 deactivate_process (proc
)
3828 register int inchannel
, outchannel
;
3829 register struct Lisp_Process
*p
= XPROCESS (proc
);
3831 inchannel
= p
->infd
;
3832 outchannel
= p
->outfd
;
3834 #ifdef ADAPTIVE_READ_BUFFERING
3835 if (p
->read_output_delay
> 0)
3837 if (--process_output_delay_count
< 0)
3838 process_output_delay_count
= 0;
3839 p
->read_output_delay
= 0;
3840 p
->read_output_skip
= 0;
3846 /* Beware SIGCHLD hereabouts. */
3847 flush_pending_output (inchannel
);
3850 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3851 sys$
dassgn (outchannel
);
3852 vs
= get_vms_process_pointer (p
->pid
);
3854 give_back_vms_process_stuff (vs
);
3857 emacs_close (inchannel
);
3858 if (outchannel
>= 0 && outchannel
!= inchannel
)
3859 emacs_close (outchannel
);
3864 #ifdef DATAGRAM_SOCKETS
3865 if (DATAGRAM_CHAN_P (inchannel
))
3867 xfree (datagram_address
[inchannel
].sa
);
3868 datagram_address
[inchannel
].sa
= 0;
3869 datagram_address
[inchannel
].len
= 0;
3872 chan_process
[inchannel
] = Qnil
;
3873 FD_CLR (inchannel
, &input_wait_mask
);
3874 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3875 #ifdef NON_BLOCKING_CONNECT
3876 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3878 FD_CLR (inchannel
, &connect_wait_mask
);
3879 if (--num_pending_connects
< 0)
3883 if (inchannel
== max_process_desc
)
3886 /* We just closed the highest-numbered process input descriptor,
3887 so recompute the highest-numbered one now. */
3888 max_process_desc
= 0;
3889 for (i
= 0; i
< MAXDESC
; i
++)
3890 if (!NILP (chan_process
[i
]))
3891 max_process_desc
= i
;
3896 /* Close all descriptors currently in use for communication
3897 with subprocess. This is used in a newly-forked subprocess
3898 to get rid of irrelevant descriptors. */
3901 close_process_descs ()
3905 for (i
= 0; i
< MAXDESC
; i
++)
3907 Lisp_Object process
;
3908 process
= chan_process
[i
];
3909 if (!NILP (process
))
3911 int in
= XPROCESS (process
)->infd
;
3912 int out
= XPROCESS (process
)->outfd
;
3915 if (out
>= 0 && in
!= out
)
3922 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3924 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3925 It is read into the process' buffers or given to their filter functions.
3926 Non-nil arg PROCESS means do not return until some output has been received
3929 Non-nil second arg SECONDS and third arg MILLISEC are number of
3930 seconds and milliseconds to wait; return after that much time whether
3931 or not there is input. If SECONDS is a floating point number,
3932 it specifies a fractional number of seconds to wait.
3934 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3935 from PROCESS, suspending reading output from other processes.
3936 If JUST-THIS-ONE is an integer, don't run any timers either.
3937 Return non-nil if we received any output before the timeout expired. */)
3938 (process
, seconds
, millisec
, just_this_one
)
3939 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3941 int secs
, usecs
= 0;
3943 if (! NILP (process
))
3944 CHECK_PROCESS (process
);
3946 just_this_one
= Qnil
;
3948 if (!NILP (seconds
))
3950 if (INTEGERP (seconds
))
3951 secs
= XINT (seconds
);
3952 else if (FLOATP (seconds
))
3954 double timeout
= XFLOAT_DATA (seconds
);
3955 secs
= (int) timeout
;
3956 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3959 wrong_type_argument (Qnumberp
, seconds
);
3961 if (INTEGERP (millisec
))
3964 usecs
+= XINT (millisec
) * 1000;
3965 carry
= usecs
/ 1000000;
3967 if ((usecs
-= carry
* 1000000) < 0)
3974 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3975 secs
= -1, usecs
= 0;
3978 secs
= NILP (process
) ? -1 : 0;
3981 (wait_reading_process_output (secs
, usecs
, 0, 0,
3983 !NILP (process
) ? XPROCESS (process
) : NULL
,
3984 NILP (just_this_one
) ? 0 :
3985 !INTEGERP (just_this_one
) ? 1 : -1)
3989 /* Accept a connection for server process SERVER on CHANNEL. */
3991 static int connect_counter
= 0;
3994 server_accept_connection (server
, channel
)
3998 Lisp_Object proc
, caller
, name
, buffer
;
3999 Lisp_Object contact
, host
, service
;
4000 struct Lisp_Process
*ps
= XPROCESS (server
);
4001 struct Lisp_Process
*p
;
4005 struct sockaddr_in in
;
4007 struct sockaddr_in6 in6
;
4009 #ifdef HAVE_LOCAL_SOCKETS
4010 struct sockaddr_un un
;
4013 int len
= sizeof saddr
;
4015 s
= accept (channel
, &saddr
.sa
, &len
);
4024 if (code
== EWOULDBLOCK
)
4028 if (!NILP (ps
->log
))
4029 call3 (ps
->log
, server
, Qnil
,
4030 concat3 (build_string ("accept failed with code"),
4031 Fnumber_to_string (make_number (code
)),
4032 build_string ("\n")));
4038 /* Setup a new process to handle the connection. */
4040 /* Generate a unique identification of the caller, and build contact
4041 information for this process. */
4044 switch (saddr
.sa
.sa_family
)
4048 Lisp_Object args
[5];
4049 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4050 args
[0] = build_string ("%d.%d.%d.%d");
4051 args
[1] = make_number (*ip
++);
4052 args
[2] = make_number (*ip
++);
4053 args
[3] = make_number (*ip
++);
4054 args
[4] = make_number (*ip
++);
4055 host
= Fformat (5, args
);
4056 service
= make_number (ntohs (saddr
.in
.sin_port
));
4058 args
[0] = build_string (" <%s:%d>");
4061 caller
= Fformat (3, args
);
4068 Lisp_Object args
[9];
4069 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4071 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4072 for (i
= 0; i
< 8; i
++)
4073 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4074 host
= Fformat (9, args
);
4075 service
= make_number (ntohs (saddr
.in
.sin_port
));
4077 args
[0] = build_string (" <[%s]:%d>");
4080 caller
= Fformat (3, args
);
4085 #ifdef HAVE_LOCAL_SOCKETS
4089 caller
= Fnumber_to_string (make_number (connect_counter
));
4090 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4094 /* Create a new buffer name for this process if it doesn't have a
4095 filter. The new buffer name is based on the buffer name or
4096 process name of the server process concatenated with the caller
4099 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4103 buffer
= ps
->buffer
;
4105 buffer
= Fbuffer_name (buffer
);
4110 buffer
= concat2 (buffer
, caller
);
4111 buffer
= Fget_buffer_create (buffer
);
4115 /* Generate a unique name for the new server process. Combine the
4116 server process name with the caller identification. */
4118 name
= concat2 (ps
->name
, caller
);
4119 proc
= make_process (name
);
4121 chan_process
[s
] = proc
;
4124 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4127 fcntl (s
, F_SETFL
, O_NDELAY
);
4131 p
= XPROCESS (proc
);
4133 /* Build new contact information for this setup. */
4134 contact
= Fcopy_sequence (ps
->childp
);
4135 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4136 contact
= Fplist_put (contact
, QChost
, host
);
4137 if (!NILP (service
))
4138 contact
= Fplist_put (contact
, QCservice
, service
);
4139 contact
= Fplist_put (contact
, QCremote
,
4140 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4141 #ifdef HAVE_GETSOCKNAME
4143 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4144 contact
= Fplist_put (contact
, QClocal
,
4145 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4148 p
->childp
= contact
;
4149 p
->plist
= Fcopy_sequence (ps
->plist
);
4152 p
->sentinel
= ps
->sentinel
;
4153 p
->filter
= ps
->filter
;
4160 /* Client processes for accepted connections are not stopped initially. */
4161 if (!EQ (p
->filter
, Qt
))
4163 FD_SET (s
, &input_wait_mask
);
4164 FD_SET (s
, &non_keyboard_wait_mask
);
4167 if (s
> max_process_desc
)
4168 max_process_desc
= s
;
4170 /* Setup coding system for new process based on server process.
4171 This seems to be the proper thing to do, as the coding system
4172 of the new process should reflect the settings at the time the
4173 server socket was opened; not the current settings. */
4175 p
->decode_coding_system
= ps
->decode_coding_system
;
4176 p
->encode_coding_system
= ps
->encode_coding_system
;
4177 setup_process_coding_systems (proc
);
4179 p
->decoding_buf
= make_uninit_string (0);
4180 p
->decoding_carryover
= 0;
4181 p
->encoding_buf
= make_uninit_string (0);
4183 p
->inherit_coding_system_flag
4184 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4186 if (!NILP (ps
->log
))
4187 call3 (ps
->log
, server
, proc
,
4188 concat3 (build_string ("accept from "),
4189 (STRINGP (host
) ? host
: build_string ("-")),
4190 build_string ("\n")));
4192 if (!NILP (p
->sentinel
))
4193 exec_sentinel (proc
,
4194 concat3 (build_string ("open from "),
4195 (STRINGP (host
) ? host
: build_string ("-")),
4196 build_string ("\n")));
4199 /* This variable is different from waiting_for_input in keyboard.c.
4200 It is used to communicate to a lisp process-filter/sentinel (via the
4201 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4202 for user-input when that process-filter was called.
4203 waiting_for_input cannot be used as that is by definition 0 when
4204 lisp code is being evalled.
4205 This is also used in record_asynch_buffer_change.
4206 For that purpose, this must be 0
4207 when not inside wait_reading_process_output. */
4208 static int waiting_for_user_input_p
;
4211 wait_reading_process_output_unwind (data
)
4214 waiting_for_user_input_p
= XINT (data
);
4218 /* This is here so breakpoints can be put on it. */
4220 wait_reading_process_output_1 ()
4224 /* Use a wrapper around select to work around a bug in gdb 5.3.
4225 Normally, the wrapper is optimzed away by inlining.
4227 If emacs is stopped inside select, the gdb backtrace doesn't
4228 show the function which called select, so it is practically
4229 impossible to step through wait_reading_process_output. */
4233 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4235 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4238 return select (n
, rfd
, wfd
, xfd
, tmo
);
4240 #define select select_wrapper
4243 /* Read and dispose of subprocess output while waiting for timeout to
4244 elapse and/or keyboard input to be available.
4247 timeout in seconds, or
4248 zero for no limit, or
4249 -1 means gobble data immediately available but don't wait for any.
4252 an additional duration to wait, measured in microseconds.
4253 If this is nonzero and time_limit is 0, then the timeout
4254 consists of MICROSECS only.
4256 READ_KBD is a lisp value:
4257 0 to ignore keyboard input, or
4258 1 to return when input is available, or
4259 -1 meaning caller will actually read the input, so don't throw to
4260 the quit handler, or
4262 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4263 output that arrives.
4265 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4266 (and gobble terminal input into the buffer if any arrives).
4268 If WAIT_PROC is specified, wait until something arrives from that
4269 process. The return value is true if we read some input from
4272 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4273 (suspending output from other processes). A negative value
4274 means don't run any timers either.
4276 If WAIT_PROC is specified, then the function returns true if we
4277 received input from that process before the timeout elapsed.
4278 Otherwise, return true if we received input from any process. */
4281 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4282 wait_for_cell
, wait_proc
, just_wait_proc
)
4283 int time_limit
, microsecs
, read_kbd
, do_display
;
4284 Lisp_Object wait_for_cell
;
4285 struct Lisp_Process
*wait_proc
;
4288 register int channel
, nfds
;
4289 SELECT_TYPE Available
;
4290 #ifdef NON_BLOCKING_CONNECT
4291 SELECT_TYPE Connecting
;
4294 int check_delay
, no_avail
;
4297 EMACS_TIME timeout
, end_time
;
4298 int wait_channel
= -1;
4299 int got_some_input
= 0;
4300 int count
= SPECPDL_INDEX ();
4302 FD_ZERO (&Available
);
4303 #ifdef NON_BLOCKING_CONNECT
4304 FD_ZERO (&Connecting
);
4307 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4308 if (wait_proc
!= NULL
)
4309 wait_channel
= wait_proc
->infd
;
4311 record_unwind_protect (wait_reading_process_output_unwind
,
4312 make_number (waiting_for_user_input_p
));
4313 waiting_for_user_input_p
= read_kbd
;
4315 /* Since we may need to wait several times,
4316 compute the absolute time to return at. */
4317 if (time_limit
|| microsecs
)
4319 EMACS_GET_TIME (end_time
);
4320 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4321 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4323 #ifdef POLL_INTERRUPTED_SYS_CALL
4324 /* AlainF 5-Jul-1996
4325 HP-UX 10.10 seem to have problems with signals coming in
4326 Causes "poll: interrupted system call" messages when Emacs is run
4328 Turn off periodic alarms (in case they are in use),
4329 and then turn off any other atimers. */
4331 turn_on_atimers (0);
4332 #endif /* POLL_INTERRUPTED_SYS_CALL */
4336 int timeout_reduced_for_timers
= 0;
4338 /* If calling from keyboard input, do not quit
4339 since we want to return C-g as an input character.
4340 Otherwise, do pending quit if requested. */
4344 else if (interrupt_input_pending
)
4345 handle_async_input ();
4348 /* Exit now if the cell we're waiting for became non-nil. */
4349 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4352 /* Compute time from now till when time limit is up */
4353 /* Exit if already run out */
4354 if (time_limit
== -1)
4356 /* -1 specified for timeout means
4357 gobble output available now
4358 but don't wait at all. */
4360 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4362 else if (time_limit
|| microsecs
)
4364 EMACS_GET_TIME (timeout
);
4365 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4366 if (EMACS_TIME_NEG_P (timeout
))
4371 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4374 /* Normally we run timers here.
4375 But not if wait_for_cell; in those cases,
4376 the wait is supposed to be short,
4377 and those callers cannot handle running arbitrary Lisp code here. */
4378 if (NILP (wait_for_cell
)
4379 && just_wait_proc
>= 0)
4381 EMACS_TIME timer_delay
;
4385 int old_timers_run
= timers_run
;
4386 struct buffer
*old_buffer
= current_buffer
;
4388 timer_delay
= timer_check (1);
4390 /* If a timer has run, this might have changed buffers
4391 an alike. Make read_key_sequence aware of that. */
4392 if (timers_run
!= old_timers_run
4393 && old_buffer
!= current_buffer
4394 && waiting_for_user_input_p
== -1)
4395 record_asynch_buffer_change ();
4397 if (timers_run
!= old_timers_run
&& do_display
)
4398 /* We must retry, since a timer may have requeued itself
4399 and that could alter the time_delay. */
4400 redisplay_preserve_echo_area (9);
4404 while (!detect_input_pending ());
4406 /* If there is unread keyboard input, also return. */
4408 && requeued_events_pending_p ())
4411 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4413 EMACS_TIME difference
;
4414 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4415 if (EMACS_TIME_NEG_P (difference
))
4417 timeout
= timer_delay
;
4418 timeout_reduced_for_timers
= 1;
4421 /* If time_limit is -1, we are not going to wait at all. */
4422 else if (time_limit
!= -1)
4424 /* This is so a breakpoint can be put here. */
4425 wait_reading_process_output_1 ();
4429 /* Cause C-g and alarm signals to take immediate action,
4430 and cause input available signals to zero out timeout.
4432 It is important that we do this before checking for process
4433 activity. If we get a SIGCHLD after the explicit checks for
4434 process activity, timeout is the only way we will know. */
4436 set_waiting_for_input (&timeout
);
4438 /* If status of something has changed, and no input is
4439 available, notify the user of the change right away. After
4440 this explicit check, we'll let the SIGCHLD handler zap
4441 timeout to get our attention. */
4442 if (update_tick
!= process_tick
&& do_display
)
4445 #ifdef NON_BLOCKING_CONNECT
4449 Atemp
= input_wait_mask
;
4451 /* On Mac OS X 10.0, the SELECT system call always says input is
4452 present (for reading) at stdin, even when none is. This
4453 causes the call to SELECT below to return 1 and
4454 status_notify not to be called. As a result output of
4455 subprocesses are incorrectly discarded.
4459 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4461 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4462 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4465 #ifdef NON_BLOCKING_CONNECT
4466 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4470 (SELECT_TYPE
*)0, &timeout
)
4473 /* It's okay for us to do this and then continue with
4474 the loop, since timeout has already been zeroed out. */
4475 clear_waiting_for_input ();
4476 status_notify (NULL
);
4480 /* Don't wait for output from a non-running process. Just
4481 read whatever data has already been received. */
4482 if (wait_proc
&& wait_proc
->raw_status_new
)
4483 update_status (wait_proc
);
4485 && ! EQ (wait_proc
->status
, Qrun
)
4486 && ! EQ (wait_proc
->status
, Qconnect
))
4488 int nread
, total_nread
= 0;
4490 clear_waiting_for_input ();
4491 XSETPROCESS (proc
, wait_proc
);
4493 /* Read data from the process, until we exhaust it. */
4494 while (wait_proc
->infd
>= 0)
4496 nread
= read_process_output (proc
, wait_proc
->infd
);
4502 total_nread
+= nread
;
4504 else if (nread
== -1 && EIO
== errno
)
4508 else if (nread
== -1 && EAGAIN
== errno
)
4512 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4516 if (total_nread
> 0 && do_display
)
4517 redisplay_preserve_echo_area (10);
4522 /* Wait till there is something to do */
4524 if (wait_proc
&& just_wait_proc
)
4526 if (wait_proc
->infd
< 0) /* Terminated */
4528 FD_SET (wait_proc
->infd
, &Available
);
4530 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4532 else if (!NILP (wait_for_cell
))
4534 Available
= non_process_wait_mask
;
4536 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4541 Available
= non_keyboard_wait_mask
;
4543 Available
= input_wait_mask
;
4544 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4545 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4548 /* If frame size has changed or the window is newly mapped,
4549 redisplay now, before we start to wait. There is a race
4550 condition here; if a SIGIO arrives between now and the select
4551 and indicates that a frame is trashed, the select may block
4552 displaying a trashed screen. */
4553 if (frame_garbaged
&& do_display
)
4555 clear_waiting_for_input ();
4556 redisplay_preserve_echo_area (11);
4558 set_waiting_for_input (&timeout
);
4562 if (read_kbd
&& detect_input_pending ())
4569 #ifdef NON_BLOCKING_CONNECT
4571 Connecting
= connect_wait_mask
;
4574 #ifdef ADAPTIVE_READ_BUFFERING
4575 /* Set the timeout for adaptive read buffering if any
4576 process has non-zero read_output_skip and non-zero
4577 read_output_delay, and we are not reading output for a
4578 specific wait_channel. It is not executed if
4579 Vprocess_adaptive_read_buffering is nil. */
4580 if (process_output_skip
&& check_delay
> 0)
4582 int usecs
= EMACS_USECS (timeout
);
4583 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4584 usecs
= READ_OUTPUT_DELAY_MAX
;
4585 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4587 proc
= chan_process
[channel
];
4590 /* Find minimum non-zero read_output_delay among the
4591 processes with non-zero read_output_skip. */
4592 if (XPROCESS (proc
)->read_output_delay
> 0)
4595 if (!XPROCESS (proc
)->read_output_skip
)
4597 FD_CLR (channel
, &Available
);
4598 XPROCESS (proc
)->read_output_skip
= 0;
4599 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4600 usecs
= XPROCESS (proc
)->read_output_delay
;
4603 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4604 process_output_skip
= 0;
4608 nfds
= select (max (max (max_process_desc
, max_keyboard_desc
),
4611 #ifdef NON_BLOCKING_CONNECT
4612 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4616 (SELECT_TYPE
*)0, &timeout
);
4621 /* Make C-g and alarm signals set flags again */
4622 clear_waiting_for_input ();
4624 /* If we woke up due to SIGWINCH, actually change size now. */
4625 do_pending_window_change (0);
4627 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4628 /* We wanted the full specified time, so return now. */
4632 if (xerrno
== EINTR
)
4635 /* Ultrix select seems to return ENOMEM when it is
4636 interrupted. Treat it just like EINTR. Bleah. Note
4637 that we want to test for the "ultrix" CPP symbol, not
4638 "__ultrix__"; the latter is only defined under GCC, but
4639 not by DEC's bundled CC. -JimB */
4640 else if (xerrno
== ENOMEM
)
4643 else if (xerrno
== EBADF
)
4646 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4647 the child's closure of the pts gives the parent a SIGHUP, and
4648 the ptc file descriptor is automatically closed,
4649 yielding EBADF here or at select() call above.
4650 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4651 in m/ibmrt-aix.h), and here we just ignore the select error.
4652 Cleanup occurs c/o status_notify after SIGCLD. */
4653 no_avail
= 1; /* Cannot depend on values returned */
4659 error ("select error: %s", emacs_strerror (xerrno
));
4664 FD_ZERO (&Available
);
4665 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4668 #if defined(sun) && !defined(USG5_4)
4669 if (nfds
> 0 && keyboard_bit_set (&Available
)
4671 /* System sometimes fails to deliver SIGIO.
4673 David J. Mackenzie says that Emacs doesn't compile under
4674 Solaris if this code is enabled, thus the USG5_4 in the CPP
4675 conditional. "I haven't noticed any ill effects so far.
4676 If you find a Solaris expert somewhere, they might know
4678 kill (getpid (), SIGIO
);
4681 #if 0 /* When polling is used, interrupt_input is 0,
4682 so get_input_pending should read the input.
4683 So this should not be needed. */
4684 /* If we are using polling for input,
4685 and we see input available, make it get read now.
4686 Otherwise it might not actually get read for a second.
4687 And on hpux, since we turn off polling in wait_reading_process_output,
4688 it might never get read at all if we don't spend much time
4689 outside of wait_reading_process_output. */
4690 if (read_kbd
&& interrupt_input
4691 && keyboard_bit_set (&Available
)
4692 && input_polling_used ())
4693 kill (getpid (), SIGALRM
);
4696 /* Check for keyboard input */
4697 /* If there is any, return immediately
4698 to give it higher priority than subprocesses */
4702 int old_timers_run
= timers_run
;
4703 struct buffer
*old_buffer
= current_buffer
;
4704 Lisp_Object old_window
= selected_window
;
4707 if (detect_input_pending_run_timers (do_display
))
4709 swallow_events (do_display
);
4710 if (detect_input_pending_run_timers (do_display
))
4714 /* If a timer has run, this might have changed buffers
4715 an alike. Make read_key_sequence aware of that. */
4716 if (timers_run
!= old_timers_run
4717 && waiting_for_user_input_p
== -1
4718 && (old_buffer
!= current_buffer
4719 || !EQ (old_window
, selected_window
)))
4720 record_asynch_buffer_change ();
4726 /* If there is unread keyboard input, also return. */
4728 && requeued_events_pending_p ())
4731 /* If we are not checking for keyboard input now,
4732 do process events (but don't run any timers).
4733 This is so that X events will be processed.
4734 Otherwise they may have to wait until polling takes place.
4735 That would causes delays in pasting selections, for example.
4737 (We used to do this only if wait_for_cell.) */
4738 if (read_kbd
== 0 && detect_input_pending ())
4740 swallow_events (do_display
);
4741 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4742 if (detect_input_pending ())
4747 /* Exit now if the cell we're waiting for became non-nil. */
4748 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4752 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4753 go read it. This can happen with X on BSD after logging out.
4754 In that case, there really is no input and no SIGIO,
4755 but select says there is input. */
4757 if (read_kbd
&& interrupt_input
4758 && keyboard_bit_set (&Available
) && ! noninteractive
)
4759 kill (getpid (), SIGIO
);
4763 got_some_input
|= nfds
> 0;
4765 /* If checking input just got us a size-change event from X,
4766 obey it now if we should. */
4767 if (read_kbd
|| ! NILP (wait_for_cell
))
4768 do_pending_window_change (0);
4770 /* Check for data from a process. */
4771 if (no_avail
|| nfds
== 0)
4774 /* Really FIRST_PROC_DESC should be 0 on Unix,
4775 but this is safer in the short run. */
4776 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4778 if (FD_ISSET (channel
, &Available
)
4779 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4783 /* If waiting for this channel, arrange to return as
4784 soon as no more input to be processed. No more
4786 if (wait_channel
== channel
)
4792 proc
= chan_process
[channel
];
4796 /* If this is a server stream socket, accept connection. */
4797 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4799 server_accept_connection (proc
, channel
);
4803 /* Read data from the process, starting with our
4804 buffered-ahead character if we have one. */
4806 nread
= read_process_output (proc
, channel
);
4809 /* Since read_process_output can run a filter,
4810 which can call accept-process-output,
4811 don't try to read from any other processes
4812 before doing the select again. */
4813 FD_ZERO (&Available
);
4816 redisplay_preserve_echo_area (12);
4819 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4822 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4823 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4825 else if (nread
== -1 && errno
== EAGAIN
)
4829 else if (nread
== -1 && errno
== EAGAIN
)
4831 /* Note that we cannot distinguish between no input
4832 available now and a closed pipe.
4833 With luck, a closed pipe will be accompanied by
4834 subprocess termination and SIGCHLD. */
4835 else if (nread
== 0 && !NETCONN_P (proc
))
4837 #endif /* O_NDELAY */
4838 #endif /* O_NONBLOCK */
4840 /* On some OSs with ptys, when the process on one end of
4841 a pty exits, the other end gets an error reading with
4842 errno = EIO instead of getting an EOF (0 bytes read).
4843 Therefore, if we get an error reading and errno =
4844 EIO, just continue, because the child process has
4845 exited and should clean itself up soon (e.g. when we
4848 However, it has been known to happen that the SIGCHLD
4849 got lost. So raise the signal again just in case.
4851 else if (nread
== -1 && errno
== EIO
)
4853 /* Clear the descriptor now, so we only raise the signal once. */
4854 FD_CLR (channel
, &input_wait_mask
);
4855 FD_CLR (channel
, &non_keyboard_wait_mask
);
4857 kill (getpid (), SIGCHLD
);
4859 #endif /* HAVE_PTYS */
4860 /* If we can detect process termination, don't consider the process
4861 gone just because its pipe is closed. */
4863 else if (nread
== 0 && !NETCONN_P (proc
))
4868 /* Preserve status of processes already terminated. */
4869 XPROCESS (proc
)->tick
= ++process_tick
;
4870 deactivate_process (proc
);
4871 if (XPROCESS (proc
)->raw_status_new
)
4872 update_status (XPROCESS (proc
));
4873 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4874 XPROCESS (proc
)->status
4875 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4878 #ifdef NON_BLOCKING_CONNECT
4879 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4880 && FD_ISSET (channel
, &connect_wait_mask
))
4882 struct Lisp_Process
*p
;
4884 FD_CLR (channel
, &connect_wait_mask
);
4885 if (--num_pending_connects
< 0)
4888 proc
= chan_process
[channel
];
4892 p
= XPROCESS (proc
);
4895 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4896 So only use it on systems where it is known to work. */
4898 int xlen
= sizeof(xerrno
);
4899 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4904 struct sockaddr pname
;
4905 int pnamelen
= sizeof(pname
);
4907 /* If connection failed, getpeername will fail. */
4909 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4911 /* Obtain connect failure code through error slippage. */
4914 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4921 p
->tick
= ++process_tick
;
4922 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4923 deactivate_process (proc
);
4928 /* Execute the sentinel here. If we had relied on
4929 status_notify to do it later, it will read input
4930 from the process before calling the sentinel. */
4931 exec_sentinel (proc
, build_string ("open\n"));
4932 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4934 FD_SET (p
->infd
, &input_wait_mask
);
4935 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4939 #endif /* NON_BLOCKING_CONNECT */
4940 } /* end for each file descriptor */
4941 } /* end while exit conditions not met */
4943 unbind_to (count
, Qnil
);
4945 /* If calling from keyboard input, do not quit
4946 since we want to return C-g as an input character.
4947 Otherwise, do pending quit if requested. */
4950 /* Prevent input_pending from remaining set if we quit. */
4951 clear_input_pending ();
4954 #ifdef POLL_INTERRUPTED_SYS_CALL
4955 /* AlainF 5-Jul-1996
4956 HP-UX 10.10 seems to have problems with signals coming in
4957 Causes "poll: interrupted system call" messages when Emacs is run
4959 Turn periodic alarms back on */
4961 #endif /* POLL_INTERRUPTED_SYS_CALL */
4963 return got_some_input
;
4966 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4969 read_process_output_call (fun_and_args
)
4970 Lisp_Object fun_and_args
;
4972 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4976 read_process_output_error_handler (error
)
4979 cmd_error_internal (error
, "error in process filter: ");
4981 update_echo_area ();
4982 Fsleep_for (make_number (2), Qnil
);
4986 /* Read pending output from the process channel,
4987 starting with our buffered-ahead character if we have one.
4988 Yield number of decoded characters read.
4990 This function reads at most 4096 characters.
4991 If you want to read all available subprocess output,
4992 you must call it repeatedly until it returns zero.
4994 The characters read are decoded according to PROC's coding-system
4998 read_process_output (proc
, channel
)
5000 register int channel
;
5002 register int nbytes
;
5004 register Lisp_Object outstream
;
5005 register struct buffer
*old
= current_buffer
;
5006 register struct Lisp_Process
*p
= XPROCESS (proc
);
5007 register int opoint
;
5008 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5009 int carryover
= p
->decoding_carryover
;
5013 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5015 vs
= get_vms_process_pointer (p
->pid
);
5019 return (0); /* Really weird if it does this */
5020 if (!(vs
->iosb
[0] & 1))
5021 return -1; /* I/O error */
5024 error ("Could not get VMS process pointer");
5025 chars
= vs
->inputBuffer
;
5026 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
5029 start_vms_process_read (vs
); /* Crank up the next read on the process */
5030 return 1; /* Nothing worth printing, say we got 1 */
5034 /* The data carried over in the previous decoding (which are at
5035 the tail of decoding buffer) should be prepended to the new
5036 data read to decode all together. */
5037 chars
= (char *) alloca (nbytes
+ carryover
);
5038 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5039 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5043 chars
= (char *) alloca (carryover
+ readmax
);
5045 /* See the comment above. */
5046 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5048 #ifdef DATAGRAM_SOCKETS
5049 /* We have a working select, so proc_buffered_char is always -1. */
5050 if (DATAGRAM_CHAN_P (channel
))
5052 int len
= datagram_address
[channel
].len
;
5053 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5054 0, datagram_address
[channel
].sa
, &len
);
5058 if (proc_buffered_char
[channel
] < 0)
5060 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5061 #ifdef ADAPTIVE_READ_BUFFERING
5062 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5064 int delay
= p
->read_output_delay
;
5067 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5070 process_output_delay_count
++;
5071 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5074 else if (delay
> 0 && (nbytes
== readmax
))
5076 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5078 process_output_delay_count
--;
5080 p
->read_output_delay
= delay
;
5083 p
->read_output_skip
= 1;
5084 process_output_skip
= 1;
5091 chars
[carryover
] = proc_buffered_char
[channel
];
5092 proc_buffered_char
[channel
] = -1;
5093 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5097 nbytes
= nbytes
+ 1;
5099 #endif /* not VMS */
5101 p
->decoding_carryover
= 0;
5103 /* At this point, NBYTES holds number of bytes just received
5104 (including the one in proc_buffered_char[channel]). */
5107 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5109 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5112 /* Now set NBYTES how many bytes we must decode. */
5113 nbytes
+= carryover
;
5115 /* Read and dispose of the process output. */
5116 outstream
= p
->filter
;
5117 if (!NILP (outstream
))
5119 /* We inhibit quit here instead of just catching it so that
5120 hitting ^G when a filter happens to be running won't screw
5122 int count
= SPECPDL_INDEX ();
5123 Lisp_Object odeactivate
;
5124 Lisp_Object obuffer
, okeymap
;
5126 int outer_running_asynch_code
= running_asynch_code
;
5127 int waiting
= waiting_for_user_input_p
;
5129 /* No need to gcpro these, because all we do with them later
5130 is test them for EQness, and none of them should be a string. */
5131 odeactivate
= Vdeactivate_mark
;
5132 XSETBUFFER (obuffer
, current_buffer
);
5133 okeymap
= current_buffer
->keymap
;
5135 specbind (Qinhibit_quit
, Qt
);
5136 specbind (Qlast_nonmenu_event
, Qt
);
5138 /* In case we get recursively called,
5139 and we already saved the match data nonrecursively,
5140 save the same match data in safely recursive fashion. */
5141 if (outer_running_asynch_code
)
5144 /* Don't clobber the CURRENT match data, either! */
5145 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5146 restore_search_regs ();
5147 record_unwind_save_match_data ();
5148 Fset_match_data (tem
, Qt
);
5151 /* For speed, if a search happens within this code,
5152 save the match data in a special nonrecursive fashion. */
5153 running_asynch_code
= 1;
5155 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5157 Vlast_coding_system_used
= coding
->symbol
;
5158 /* A new coding system might be found. */
5159 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5161 p
->decode_coding_system
= coding
->symbol
;
5163 /* Don't call setup_coding_system for
5164 proc_decode_coding_system[channel] here. It is done in
5165 detect_coding called via decode_coding above. */
5167 /* If a coding system for encoding is not yet decided, we set
5168 it as the same as coding-system for decoding.
5170 But, before doing that we must check if
5171 proc_encode_coding_system[p->outfd] surely points to a
5172 valid memory because p->outfd will be changed once EOF is
5173 sent to the process. */
5174 if (NILP (p
->encode_coding_system
)
5175 && proc_encode_coding_system
[p
->outfd
])
5177 p
->encode_coding_system
= coding
->symbol
;
5178 setup_coding_system (coding
->symbol
,
5179 proc_encode_coding_system
[p
->outfd
]);
5180 if (proc_encode_coding_system
[p
->outfd
]->eol_type
5181 == CODING_EOL_UNDECIDED
)
5182 proc_encode_coding_system
[p
->outfd
]->eol_type
5187 carryover
= nbytes
- coding
->consumed
;
5191 if (SCHARS (p
->decoding_buf
) < carryover
)
5192 p
->decoding_buf
= make_uninit_string (carryover
);
5193 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5195 p
->decoding_carryover
= carryover
;
5196 /* Adjust the multibyteness of TEXT to that of the filter. */
5197 if (!p
->filter_multibyte
!= !STRING_MULTIBYTE (text
))
5198 text
= (STRING_MULTIBYTE (text
)
5199 ? Fstring_as_unibyte (text
)
5200 : Fstring_to_multibyte (text
));
5201 if (SBYTES (text
) > 0)
5202 internal_condition_case_1 (read_process_output_call
,
5204 Fcons (proc
, Fcons (text
, Qnil
))),
5205 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5206 read_process_output_error_handler
);
5208 /* If we saved the match data nonrecursively, restore it now. */
5209 restore_search_regs ();
5210 running_asynch_code
= outer_running_asynch_code
;
5212 /* Handling the process output should not deactivate the mark. */
5213 Vdeactivate_mark
= odeactivate
;
5215 /* Restore waiting_for_user_input_p as it was
5216 when we were called, in case the filter clobbered it. */
5217 waiting_for_user_input_p
= waiting
;
5219 #if 0 /* Call record_asynch_buffer_change unconditionally,
5220 because we might have changed minor modes or other things
5221 that affect key bindings. */
5222 if (! EQ (Fcurrent_buffer (), obuffer
)
5223 || ! EQ (current_buffer
->keymap
, okeymap
))
5225 /* But do it only if the caller is actually going to read events.
5226 Otherwise there's no need to make him wake up, and it could
5227 cause trouble (for example it would make sit_for return). */
5228 if (waiting_for_user_input_p
== -1)
5229 record_asynch_buffer_change ();
5232 start_vms_process_read (vs
);
5234 unbind_to (count
, Qnil
);
5238 /* If no filter, write into buffer if it isn't dead. */
5239 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5241 Lisp_Object old_read_only
;
5242 int old_begv
, old_zv
;
5243 int old_begv_byte
, old_zv_byte
;
5244 Lisp_Object odeactivate
;
5245 int before
, before_byte
;
5250 odeactivate
= Vdeactivate_mark
;
5252 Fset_buffer (p
->buffer
);
5254 opoint_byte
= PT_BYTE
;
5255 old_read_only
= current_buffer
->read_only
;
5258 old_begv_byte
= BEGV_BYTE
;
5259 old_zv_byte
= ZV_BYTE
;
5261 current_buffer
->read_only
= Qnil
;
5263 /* Insert new output into buffer
5264 at the current end-of-output marker,
5265 thus preserving logical ordering of input and output. */
5266 if (XMARKER (p
->mark
)->buffer
)
5267 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5268 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5271 SET_PT_BOTH (ZV
, ZV_BYTE
);
5273 before_byte
= PT_BYTE
;
5275 /* If the output marker is outside of the visible region, save
5276 the restriction and widen. */
5277 if (! (BEGV
<= PT
&& PT
<= ZV
))
5280 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5282 Vlast_coding_system_used
= coding
->symbol
;
5283 /* A new coding system might be found. See the comment in the
5284 similar code in the previous `if' block. */
5285 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5287 p
->decode_coding_system
= coding
->symbol
;
5288 if (NILP (p
->encode_coding_system
)
5289 && proc_encode_coding_system
[p
->outfd
])
5291 p
->encode_coding_system
= coding
->symbol
;
5292 setup_coding_system (coding
->symbol
,
5293 proc_encode_coding_system
[p
->outfd
]);
5294 if (proc_encode_coding_system
[p
->outfd
]->eol_type
5295 == CODING_EOL_UNDECIDED
)
5296 proc_encode_coding_system
[p
->outfd
]->eol_type
5300 carryover
= nbytes
- coding
->consumed
;
5304 if (SCHARS (p
->decoding_buf
) < carryover
)
5305 p
->decoding_buf
= make_uninit_string (carryover
);
5306 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5308 p
->decoding_carryover
= carryover
;
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
->symbol
;
5433 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5434 || (BUFFERP (object
)
5435 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5438 if (!EQ (coding
->symbol
, 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 if (coding
->eol_type
== CODING_EOL_UNDECIDED
)
5445 coding
->eol_type
= system_eol_type
;
5446 /* src_multibyte should be set to 1 _after_ a call to
5447 setup_coding_system, since it resets src_multibyte to
5449 coding
->src_multibyte
= 1;
5453 /* For sending a unibyte text, character code conversion should
5454 not take place but EOL conversion should. So, setup raw-text
5455 or one of the subsidiary if we have not yet done it. */
5456 if (coding
->type
!= coding_type_raw_text
)
5458 if (CODING_REQUIRE_FLUSHING (coding
))
5460 /* But, before changing the coding, we must flush out data. */
5461 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5462 send_process (proc
, "", 0, Qt
);
5464 coding
->src_multibyte
= 0;
5465 setup_raw_text_coding_system (coding
);
5468 coding
->dst_multibyte
= 0;
5470 if (CODING_REQUIRE_ENCODING (coding
))
5472 int require
= encoding_buffer_size (coding
, len
);
5473 int from_byte
= -1, from
= -1, to
= -1;
5475 if (BUFFERP (object
))
5477 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5478 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5479 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5481 else if (STRINGP (object
))
5483 from_byte
= buf
- SDATA (object
);
5484 from
= string_byte_to_char (object
, from_byte
);
5485 to
= string_byte_to_char (object
, from_byte
+ len
);
5488 if (coding
->composing
!= COMPOSITION_DISABLED
)
5491 coding_save_composition (coding
, from
, to
, object
);
5493 coding
->composing
= COMPOSITION_DISABLED
;
5496 if (SBYTES (p
->encoding_buf
) < require
)
5497 p
->encoding_buf
= make_uninit_string (require
);
5500 buf
= (BUFFERP (object
)
5501 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5502 : SDATA (object
) + from_byte
);
5504 object
= p
->encoding_buf
;
5505 encode_coding (coding
, (char *) buf
, SDATA (object
),
5506 len
, SBYTES (object
));
5507 coding_free_composition_data (coding
);
5508 len
= coding
->produced
;
5509 buf
= SDATA (object
);
5513 vs
= get_vms_process_pointer (p
->pid
);
5515 error ("Could not find this process: %x", p
->pid
);
5516 else if (write_to_vms_process (vs
, buf
, len
))
5520 if (pty_max_bytes
== 0)
5522 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5523 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5524 if (pty_max_bytes
< 0)
5525 pty_max_bytes
= 250;
5527 pty_max_bytes
= 250;
5529 /* Deduct one, to leave space for the eof. */
5533 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5534 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5535 when returning with longjmp despite being declared volatile. */
5536 if (!setjmp (send_process_frame
))
5538 process_sent_to
= proc
;
5543 /* Decide how much data we can send in one batch.
5544 Long lines need to be split into multiple batches. */
5547 /* Starting this at zero is always correct when not the first
5548 iteration because the previous iteration ended by sending C-d.
5549 It may not be correct for the first iteration
5550 if a partial line was sent in a separate send_process call.
5551 If that proves worth handling, we need to save linepos
5552 in the process object. */
5554 unsigned char *ptr
= (unsigned char *) buf
;
5555 unsigned char *end
= (unsigned char *) buf
+ len
;
5557 /* Scan through this text for a line that is too long. */
5558 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5566 /* If we found one, break the line there
5567 and put in a C-d to force the buffer through. */
5571 /* Send this batch, using one or more write calls. */
5574 int outfd
= p
->outfd
;
5575 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5576 #ifdef DATAGRAM_SOCKETS
5577 if (DATAGRAM_CHAN_P (outfd
))
5579 rv
= sendto (outfd
, (char *) buf
, this,
5580 0, datagram_address
[outfd
].sa
,
5581 datagram_address
[outfd
].len
);
5582 if (rv
< 0 && errno
== EMSGSIZE
)
5584 signal (SIGPIPE
, old_sigpipe
);
5585 report_file_error ("sending datagram",
5586 Fcons (proc
, Qnil
));
5592 rv
= emacs_write (outfd
, (char *) buf
, this);
5593 #ifdef ADAPTIVE_READ_BUFFERING
5594 if (p
->read_output_delay
> 0
5595 && p
->adaptive_read_buffering
== 1)
5597 p
->read_output_delay
= 0;
5598 process_output_delay_count
--;
5599 p
->read_output_skip
= 0;
5603 signal (SIGPIPE
, old_sigpipe
);
5609 || errno
== EWOULDBLOCK
5615 /* Buffer is full. Wait, accepting input;
5616 that may allow the program
5617 to finish doing output and read more. */
5621 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5622 /* A gross hack to work around a bug in FreeBSD.
5623 In the following sequence, read(2) returns
5627 write(2) 954 bytes, get EAGAIN
5628 read(2) 1024 bytes in process_read_output
5629 read(2) 11 bytes in process_read_output
5631 That is, read(2) returns more bytes than have
5632 ever been written successfully. The 1033 bytes
5633 read are the 1022 bytes written successfully
5634 after processing (for example with CRs added if
5635 the terminal is set up that way which it is
5636 here). The same bytes will be seen again in a
5637 later read(2), without the CRs. */
5639 if (errno
== EAGAIN
)
5642 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5644 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5646 /* Running filters might relocate buffers or strings.
5647 Arrange to relocate BUF. */
5648 if (BUFFERP (object
))
5649 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5650 else if (STRINGP (object
))
5651 offset
= buf
- SDATA (object
);
5653 #ifdef EMACS_HAS_USECS
5654 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5656 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5659 if (BUFFERP (object
))
5660 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5661 else if (STRINGP (object
))
5662 buf
= offset
+ SDATA (object
);
5667 /* This is a real error. */
5668 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5675 /* If we sent just part of the string, put in an EOF
5676 to force it through, before we send the rest. */
5678 Fprocess_send_eof (proc
);
5681 #endif /* not VMS */
5684 signal (SIGPIPE
, old_sigpipe
);
5686 proc
= process_sent_to
;
5687 p
= XPROCESS (proc
);
5689 p
->raw_status_new
= 0;
5690 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5691 p
->tick
= ++process_tick
;
5692 deactivate_process (proc
);
5694 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5696 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5704 send_process_object_unwind (buf
)
5709 if (XBUFFER (buf
) == current_buffer
)
5711 tembuf
= Fcurrent_buffer ();
5713 Fkill_buffer (tembuf
);
5717 /* Send current contents of region between START and END to PROC.
5718 If START is a string, send it instead.
5719 This function can evaluate Lisp code and can garbage collect. */
5722 send_process_object (proc
, start
, end
)
5723 Lisp_Object proc
, start
, end
;
5725 int count
= SPECPDL_INDEX ();
5726 Lisp_Object object
= STRINGP (start
) ? start
: Fcurrent_buffer ();
5727 struct buffer
*given_buffer
= current_buffer
;
5731 record_unwind_protect (send_process_object_unwind
, Fcurrent_buffer ());
5733 if (STRINGP (object
) ? STRING_MULTIBYTE (object
)
5734 : ! NILP (XBUFFER (object
)->enable_multibyte_characters
))
5736 struct Lisp_Process
*p
= XPROCESS (proc
);
5737 struct coding_system
*coding
;
5739 if (p
->raw_status_new
)
5741 if (! EQ (p
->status
, Qrun
))
5742 error ("Process %s not running", SDATA (p
->name
));
5744 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5746 coding
= proc_encode_coding_system
[p
->outfd
];
5747 if (! EQ (coding
->symbol
, p
->encode_coding_system
))
5748 /* The coding system for encoding was changed to raw-text
5749 because we sent a unibyte text previously. Now we are
5750 sending a multibyte text, thus we must encode it by the
5751 original coding system specified for the current process. */
5752 setup_coding_system (p
->encode_coding_system
, coding
);
5753 if (! NILP (coding
->pre_write_conversion
))
5755 struct gcpro gcpro1
, gcpro2
;
5757 GCPRO2 (proc
, object
);
5758 call2 (coding
->pre_write_conversion
, start
, end
);
5760 if (given_buffer
!= current_buffer
)
5762 start
= make_number (BEGV
), end
= make_number (ZV
);
5763 object
= Fcurrent_buffer ();
5768 if (BUFFERP (object
))
5770 EMACS_INT start_byte
;
5772 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5773 move_gap (XINT (end
));
5774 start_byte
= CHAR_TO_BYTE (XINT (start
));
5775 buf
= BYTE_POS_ADDR (start_byte
);
5776 len
= CHAR_TO_BYTE (XINT (end
)) - start_byte
;
5780 buf
= SDATA (object
);
5781 len
= SBYTES (object
);
5783 send_process (proc
, buf
, len
, object
);
5785 unbind_to (count
, Qnil
);
5788 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5790 doc
: /* Send current contents of region as input to PROCESS.
5791 PROCESS may be a process, a buffer, the name of a process or buffer, or
5792 nil, indicating the current buffer's process.
5793 Called from program, takes three arguments, PROCESS, START and END.
5794 If the region is more than 500 characters long,
5795 it is sent in several bunches. This may happen even for shorter regions.
5796 Output from processes can arrive in between bunches. */)
5797 (process
, start
, end
)
5798 Lisp_Object process
, start
, end
;
5802 proc
= get_process (process
);
5803 validate_region (&start
, &end
);
5804 send_process_object (proc
, start
, end
);
5808 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5810 doc
: /* Send PROCESS the contents of STRING as input.
5811 PROCESS may be a process, a buffer, the name of a process or buffer, or
5812 nil, indicating the current buffer's process.
5813 If STRING is more than 500 characters long,
5814 it is sent in several bunches. This may happen even for shorter strings.
5815 Output from processes can arrive in between bunches. */)
5817 Lisp_Object process
, string
;
5820 CHECK_STRING (string
);
5821 proc
= get_process (process
);
5822 send_process_object (proc
, string
, Qnil
);
5826 /* Return the foreground process group for the tty/pty that
5827 the process P uses. */
5829 emacs_get_tty_pgrp (p
)
5830 struct Lisp_Process
*p
;
5835 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5838 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5839 master side. Try the slave side. */
5840 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5844 ioctl (fd
, TIOCGPGRP
, &gid
);
5848 #endif /* defined (TIOCGPGRP ) */
5853 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5854 Sprocess_running_child_p
, 0, 1, 0,
5855 doc
: /* Return t if PROCESS has given the terminal to a child.
5856 If the operating system does not make it possible to find out,
5857 return t unconditionally. */)
5859 Lisp_Object process
;
5861 /* Initialize in case ioctl doesn't exist or gives an error,
5862 in a way that will cause returning t. */
5865 struct Lisp_Process
*p
;
5867 proc
= get_process (process
);
5868 p
= XPROCESS (proc
);
5870 if (!EQ (p
->childp
, Qt
))
5871 error ("Process %s is not a subprocess",
5874 error ("Process %s is not active",
5877 gid
= emacs_get_tty_pgrp (p
);
5884 /* send a signal number SIGNO to PROCESS.
5885 If CURRENT_GROUP is t, that means send to the process group
5886 that currently owns the terminal being used to communicate with PROCESS.
5887 This is used for various commands in shell mode.
5888 If CURRENT_GROUP is lambda, that means send to the process group
5889 that currently owns the terminal, but only if it is NOT the shell itself.
5891 If NOMSG is zero, insert signal-announcements into process's buffers
5894 If we can, we try to signal PROCESS by sending control characters
5895 down the pty. This allows us to signal inferiors who have changed
5896 their uid, for which killpg would return an EPERM error. */
5899 process_send_signal (process
, signo
, current_group
, nomsg
)
5900 Lisp_Object process
;
5902 Lisp_Object current_group
;
5906 register struct Lisp_Process
*p
;
5910 proc
= get_process (process
);
5911 p
= XPROCESS (proc
);
5913 if (!EQ (p
->childp
, Qt
))
5914 error ("Process %s is not a subprocess",
5917 error ("Process %s is not active",
5921 current_group
= Qnil
;
5923 /* If we are using pgrps, get a pgrp number and make it negative. */
5924 if (NILP (current_group
))
5925 /* Send the signal to the shell's process group. */
5929 #ifdef SIGNALS_VIA_CHARACTERS
5930 /* If possible, send signals to the entire pgrp
5931 by sending an input character to it. */
5933 /* TERMIOS is the latest and bestest, and seems most likely to
5934 work. If the system has it, use it. */
5937 cc_t
*sig_char
= NULL
;
5939 tcgetattr (p
->infd
, &t
);
5944 sig_char
= &t
.c_cc
[VINTR
];
5948 sig_char
= &t
.c_cc
[VQUIT
];
5952 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5953 sig_char
= &t
.c_cc
[VSWTCH
];
5955 sig_char
= &t
.c_cc
[VSUSP
];
5960 if (sig_char
&& *sig_char
!= CDISABLE
)
5962 send_process (proc
, sig_char
, 1, Qnil
);
5965 /* If we can't send the signal with a character,
5966 fall through and send it another way. */
5967 #else /* ! HAVE_TERMIOS */
5969 /* On Berkeley descendants, the following IOCTL's retrieve the
5970 current control characters. */
5971 #if defined (TIOCGLTC) && defined (TIOCGETC)
5979 ioctl (p
->infd
, TIOCGETC
, &c
);
5980 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5983 ioctl (p
->infd
, TIOCGETC
, &c
);
5984 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5988 ioctl (p
->infd
, TIOCGLTC
, &lc
);
5989 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5991 #endif /* ! defined (SIGTSTP) */
5994 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5996 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6003 ioctl (p
->infd
, TCGETA
, &t
);
6004 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6007 ioctl (p
->infd
, TCGETA
, &t
);
6008 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6012 ioctl (p
->infd
, TCGETA
, &t
);
6013 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6015 #endif /* ! defined (SIGTSTP) */
6017 #else /* ! defined (TCGETA) */
6018 Your configuration files are messed up
.
6019 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6020 you'd better be using one of the alternatives above! */
6021 #endif /* ! defined (TCGETA) */
6022 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6023 /* In this case, the code above should alway returns. */
6025 #endif /* ! defined HAVE_TERMIOS */
6027 /* The code above may fall through if it can't
6028 handle the signal. */
6029 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6032 /* Get the current pgrp using the tty itself, if we have that.
6033 Otherwise, use the pty to get the pgrp.
6034 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6035 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6036 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6037 His patch indicates that if TIOCGPGRP returns an error, then
6038 we should just assume that p->pid is also the process group id. */
6040 gid
= emacs_get_tty_pgrp (p
);
6043 /* If we can't get the information, assume
6044 the shell owns the tty. */
6047 /* It is not clear whether anything really can set GID to -1.
6048 Perhaps on some system one of those ioctls can or could do so.
6049 Or perhaps this is vestigial. */
6052 #else /* ! defined (TIOCGPGRP ) */
6053 /* Can't select pgrps on this system, so we know that
6054 the child itself heads the pgrp. */
6056 #endif /* ! defined (TIOCGPGRP ) */
6058 /* If current_group is lambda, and the shell owns the terminal,
6059 don't send any signal. */
6060 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6068 p
->raw_status_new
= 0;
6070 p
->tick
= ++process_tick
;
6072 status_notify (NULL
);
6074 #endif /* ! defined (SIGCONT) */
6077 send_process (proc
, "\003", 1, Qnil
); /* ^C */
6082 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6087 sys$
forcex (&(p
->pid
), 0, 1);
6090 flush_pending_output (p
->infd
);
6094 /* If we don't have process groups, send the signal to the immediate
6095 subprocess. That isn't really right, but it's better than any
6096 obvious alternative. */
6099 kill (p
->pid
, signo
);
6103 /* gid may be a pid, or minus a pgrp's number */
6105 if (!NILP (current_group
))
6107 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6108 EMACS_KILLPG (gid
, signo
);
6115 #else /* ! defined (TIOCSIGSEND) */
6116 EMACS_KILLPG (gid
, signo
);
6117 #endif /* ! defined (TIOCSIGSEND) */
6120 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6121 doc
: /* Interrupt process PROCESS.
6122 PROCESS may be a process, a buffer, or the name of a process or buffer.
6123 No arg or nil means current buffer's process.
6124 Second arg CURRENT-GROUP non-nil means send signal to
6125 the current process-group of the process's controlling terminal
6126 rather than to the process's own process group.
6127 If the process is a shell, this means interrupt current subjob
6128 rather than the shell.
6130 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6131 don't send the signal. */)
6132 (process
, current_group
)
6133 Lisp_Object process
, current_group
;
6135 process_send_signal (process
, SIGINT
, current_group
, 0);
6139 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6140 doc
: /* Kill process PROCESS. May be process or name of one.
6141 See function `interrupt-process' for more details on usage. */)
6142 (process
, current_group
)
6143 Lisp_Object process
, current_group
;
6145 process_send_signal (process
, SIGKILL
, current_group
, 0);
6149 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6150 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6151 See function `interrupt-process' for more details on usage. */)
6152 (process
, current_group
)
6153 Lisp_Object process
, current_group
;
6155 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6159 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6160 doc
: /* Stop process PROCESS. May be process or name of one.
6161 See function `interrupt-process' for more details on usage.
6162 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6163 (process
, current_group
)
6164 Lisp_Object process
, current_group
;
6167 if (PROCESSP (process
) && NETCONN_P (process
))
6169 struct Lisp_Process
*p
;
6171 p
= XPROCESS (process
);
6172 if (NILP (p
->command
)
6175 FD_CLR (p
->infd
, &input_wait_mask
);
6176 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6183 error ("No SIGTSTP support");
6185 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6190 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6191 doc
: /* Continue process PROCESS. May be process or name of one.
6192 See function `interrupt-process' for more details on usage.
6193 If PROCESS is a network process, resume handling of incoming traffic. */)
6194 (process
, current_group
)
6195 Lisp_Object process
, current_group
;
6198 if (PROCESSP (process
) && NETCONN_P (process
))
6200 struct Lisp_Process
*p
;
6202 p
= XPROCESS (process
);
6203 if (EQ (p
->command
, Qt
)
6205 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6207 FD_SET (p
->infd
, &input_wait_mask
);
6208 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6215 process_send_signal (process
, SIGCONT
, current_group
, 0);
6217 error ("No SIGCONT support");
6222 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6223 2, 2, "sProcess (name or number): \nnSignal code: ",
6224 doc
: /* Send PROCESS the signal with code SIGCODE.
6225 PROCESS may also be a number specifying the process id of the
6226 process to signal; in this case, the process need not be a child of
6228 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6230 Lisp_Object process
, sigcode
;
6234 if (INTEGERP (process
))
6236 pid
= XINT (process
);
6240 if (FLOATP (process
))
6242 pid
= (pid_t
) XFLOAT_DATA (process
);
6246 if (STRINGP (process
))
6249 if (tem
= Fget_process (process
), NILP (tem
))
6251 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6258 process
= get_process (process
);
6263 CHECK_PROCESS (process
);
6264 pid
= XPROCESS (process
)->pid
;
6266 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6270 #define parse_signal(NAME, VALUE) \
6271 else if (!xstricmp (name, NAME)) \
6272 XSETINT (sigcode, VALUE)
6274 if (INTEGERP (sigcode
))
6278 unsigned char *name
;
6280 CHECK_SYMBOL (sigcode
);
6281 name
= SDATA (SYMBOL_NAME (sigcode
));
6283 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6289 parse_signal ("usr1", SIGUSR1
);
6292 parse_signal ("usr2", SIGUSR2
);
6295 parse_signal ("term", SIGTERM
);
6298 parse_signal ("hup", SIGHUP
);
6301 parse_signal ("int", SIGINT
);
6304 parse_signal ("quit", SIGQUIT
);
6307 parse_signal ("ill", SIGILL
);
6310 parse_signal ("abrt", SIGABRT
);
6313 parse_signal ("emt", SIGEMT
);
6316 parse_signal ("kill", SIGKILL
);
6319 parse_signal ("fpe", SIGFPE
);
6322 parse_signal ("bus", SIGBUS
);
6325 parse_signal ("segv", SIGSEGV
);
6328 parse_signal ("sys", SIGSYS
);
6331 parse_signal ("pipe", SIGPIPE
);
6334 parse_signal ("alrm", SIGALRM
);
6337 parse_signal ("urg", SIGURG
);
6340 parse_signal ("stop", SIGSTOP
);
6343 parse_signal ("tstp", SIGTSTP
);
6346 parse_signal ("cont", SIGCONT
);
6349 parse_signal ("chld", SIGCHLD
);
6352 parse_signal ("ttin", SIGTTIN
);
6355 parse_signal ("ttou", SIGTTOU
);
6358 parse_signal ("io", SIGIO
);
6361 parse_signal ("xcpu", SIGXCPU
);
6364 parse_signal ("xfsz", SIGXFSZ
);
6367 parse_signal ("vtalrm", SIGVTALRM
);
6370 parse_signal ("prof", SIGPROF
);
6373 parse_signal ("winch", SIGWINCH
);
6376 parse_signal ("info", SIGINFO
);
6379 error ("Undefined signal name %s", name
);
6384 return make_number (kill (pid
, XINT (sigcode
)));
6387 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6388 doc
: /* Make PROCESS see end-of-file in its input.
6389 EOF comes after any text already sent to it.
6390 PROCESS may be a process, a buffer, the name of a process or buffer, or
6391 nil, indicating the current buffer's process.
6392 If PROCESS is a network connection, or is a process communicating
6393 through a pipe (as opposed to a pty), then you cannot send any more
6394 text to PROCESS after you call this function. */)
6396 Lisp_Object process
;
6399 struct coding_system
*coding
;
6401 if (DATAGRAM_CONN_P (process
))
6404 proc
= get_process (process
);
6405 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6407 /* Make sure the process is really alive. */
6408 if (XPROCESS (proc
)->raw_status_new
)
6409 update_status (XPROCESS (proc
));
6410 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6411 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6413 if (CODING_REQUIRE_FLUSHING (coding
))
6415 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6416 send_process (proc
, "", 0, Qnil
);
6420 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6422 if (XPROCESS (proc
)->pty_flag
)
6423 send_process (proc
, "\004", 1, Qnil
);
6426 int old_outfd
, new_outfd
;
6428 #ifdef HAVE_SHUTDOWN
6429 /* If this is a network connection, or socketpair is used
6430 for communication with the subprocess, call shutdown to cause EOF.
6431 (In some old system, shutdown to socketpair doesn't work.
6432 Then we just can't win.) */
6433 if (XPROCESS (proc
)->pid
== 0
6434 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6435 shutdown (XPROCESS (proc
)->outfd
, 1);
6436 /* In case of socketpair, outfd == infd, so don't close it. */
6437 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6438 emacs_close (XPROCESS (proc
)->outfd
);
6439 #else /* not HAVE_SHUTDOWN */
6440 emacs_close (XPROCESS (proc
)->outfd
);
6441 #endif /* not HAVE_SHUTDOWN */
6442 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6445 old_outfd
= XPROCESS (proc
)->outfd
;
6447 if (!proc_encode_coding_system
[new_outfd
])
6448 proc_encode_coding_system
[new_outfd
]
6449 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6450 bcopy (proc_encode_coding_system
[old_outfd
],
6451 proc_encode_coding_system
[new_outfd
],
6452 sizeof (struct coding_system
));
6453 bzero (proc_encode_coding_system
[old_outfd
],
6454 sizeof (struct coding_system
));
6456 XPROCESS (proc
)->outfd
= new_outfd
;
6462 /* Kill all processes associated with `buffer'.
6463 If `buffer' is nil, kill all processes */
6466 kill_buffer_processes (buffer
)
6469 Lisp_Object tail
, proc
;
6471 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6473 proc
= XCDR (XCAR (tail
));
6474 if (GC_PROCESSP (proc
)
6475 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6477 if (NETCONN_P (proc
))
6478 Fdelete_process (proc
);
6479 else if (XPROCESS (proc
)->infd
>= 0)
6480 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6485 /* On receipt of a signal that a child status has changed, loop asking
6486 about children with changed statuses until the system says there
6489 All we do is change the status; we do not run sentinels or print
6490 notifications. That is saved for the next time keyboard input is
6491 done, in order to avoid timing errors.
6493 ** WARNING: this can be called during garbage collection.
6494 Therefore, it must not be fooled by the presence of mark bits in
6497 ** USG WARNING: Although it is not obvious from the documentation
6498 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6499 signal() before executing at least one wait(), otherwise the
6500 handler will be called again, resulting in an infinite loop. The
6501 relevant portion of the documentation reads "SIGCLD signals will be
6502 queued and the signal-catching function will be continually
6503 reentered until the queue is empty". Invoking signal() causes the
6504 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6507 ** Malloc WARNING: This should never call malloc either directly or
6508 indirectly; if it does, that is a bug */
6512 sigchld_handler (signo
)
6515 int old_errno
= errno
;
6517 register struct Lisp_Process
*p
;
6518 extern EMACS_TIME
*input_available_clear_time
;
6520 SIGNAL_THREAD_CHECK (signo
);
6524 sigheld
|= sigbit (SIGCHLD
);
6536 #endif /* no WUNTRACED */
6537 /* Keep trying to get a status until we get a definitive result. */
6541 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6543 while (pid
< 0 && errno
== EINTR
);
6547 /* PID == 0 means no processes found, PID == -1 means a real
6548 failure. We have done all our job, so return. */
6550 /* USG systems forget handlers when they are used;
6551 must reestablish each time */
6552 #if defined (USG) && !defined (POSIX_SIGNALS)
6553 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6556 sigheld
&= ~sigbit (SIGCHLD
);
6564 #endif /* no WNOHANG */
6566 /* Find the process that signaled us, and record its status. */
6568 /* The process can have been deleted by Fdelete_process. */
6569 for (tail
= deleted_pid_list
; GC_CONSP (tail
); tail
= XCDR (tail
))
6571 Lisp_Object xpid
= XCAR (tail
);
6572 if ((GC_INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6573 || (GC_FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6575 XSETCAR (tail
, Qnil
);
6576 goto sigchld_end_of_loop
;
6580 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6582 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6584 proc
= XCDR (XCAR (tail
));
6585 p
= XPROCESS (proc
);
6586 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6591 /* Look for an asynchronous process whose pid hasn't been filled
6594 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6596 proc
= XCDR (XCAR (tail
));
6597 p
= XPROCESS (proc
);
6603 /* Change the status of the process that was found. */
6606 union { int i
; WAITTYPE wt
; } u
;
6607 int clear_desc_flag
= 0;
6609 p
->tick
= ++process_tick
;
6611 p
->raw_status
= u
.i
;
6612 p
->raw_status_new
= 1;
6614 /* If process has terminated, stop waiting for its output. */
6615 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6617 clear_desc_flag
= 1;
6619 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6620 if (clear_desc_flag
)
6622 FD_CLR (p
->infd
, &input_wait_mask
);
6623 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6626 /* Tell wait_reading_process_output that it needs to wake up and
6628 if (input_available_clear_time
)
6629 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6632 /* There was no asynchronous process found for that pid: we have
6633 a synchronous process. */
6636 synch_process_alive
= 0;
6638 /* Report the status of the synchronous process. */
6640 synch_process_retcode
= WRETCODE (w
);
6641 else if (WIFSIGNALED (w
))
6642 synch_process_termsig
= WTERMSIG (w
);
6644 /* Tell wait_reading_process_output that it needs to wake up and
6646 if (input_available_clear_time
)
6647 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6650 sigchld_end_of_loop
:
6653 /* On some systems, we must return right away.
6654 If any more processes want to signal us, we will
6656 Otherwise (on systems that have WNOHANG), loop around
6657 to use up all the processes that have something to tell us. */
6658 #if (defined WINDOWSNT \
6659 || (defined USG && !defined GNU_LINUX \
6660 && !(defined HPUX && defined WNOHANG)))
6661 #if defined (USG) && ! defined (POSIX_SIGNALS)
6662 signal (signo
, sigchld_handler
);
6666 #endif /* USG, but not HPUX with WNOHANG */
6669 #endif /* SIGCHLD */
6673 exec_sentinel_unwind (data
)
6676 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6681 exec_sentinel_error_handler (error
)
6684 cmd_error_internal (error
, "error in process sentinel: ");
6686 update_echo_area ();
6687 Fsleep_for (make_number (2), Qnil
);
6692 exec_sentinel (proc
, reason
)
6693 Lisp_Object proc
, reason
;
6695 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6696 register struct Lisp_Process
*p
= XPROCESS (proc
);
6697 int count
= SPECPDL_INDEX ();
6698 int outer_running_asynch_code
= running_asynch_code
;
6699 int waiting
= waiting_for_user_input_p
;
6701 if (inhibit_sentinels
)
6704 /* No need to gcpro these, because all we do with them later
6705 is test them for EQness, and none of them should be a string. */
6706 odeactivate
= Vdeactivate_mark
;
6707 XSETBUFFER (obuffer
, current_buffer
);
6708 okeymap
= current_buffer
->keymap
;
6710 sentinel
= p
->sentinel
;
6711 if (NILP (sentinel
))
6714 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6715 assure that it gets restored no matter how the sentinel exits. */
6717 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6718 /* Inhibit quit so that random quits don't screw up a running filter. */
6719 specbind (Qinhibit_quit
, Qt
);
6720 specbind (Qlast_nonmenu_event
, Qt
);
6722 /* In case we get recursively called,
6723 and we already saved the match data nonrecursively,
6724 save the same match data in safely recursive fashion. */
6725 if (outer_running_asynch_code
)
6728 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6729 restore_search_regs ();
6730 record_unwind_save_match_data ();
6731 Fset_match_data (tem
, Qt
);
6734 /* For speed, if a search happens within this code,
6735 save the match data in a special nonrecursive fashion. */
6736 running_asynch_code
= 1;
6738 internal_condition_case_1 (read_process_output_call
,
6740 Fcons (proc
, Fcons (reason
, Qnil
))),
6741 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6742 exec_sentinel_error_handler
);
6744 /* If we saved the match data nonrecursively, restore it now. */
6745 restore_search_regs ();
6746 running_asynch_code
= outer_running_asynch_code
;
6748 Vdeactivate_mark
= odeactivate
;
6750 /* Restore waiting_for_user_input_p as it was
6751 when we were called, in case the filter clobbered it. */
6752 waiting_for_user_input_p
= waiting
;
6755 if (! EQ (Fcurrent_buffer (), obuffer
)
6756 || ! EQ (current_buffer
->keymap
, okeymap
))
6758 /* But do it only if the caller is actually going to read events.
6759 Otherwise there's no need to make him wake up, and it could
6760 cause trouble (for example it would make sit_for return). */
6761 if (waiting_for_user_input_p
== -1)
6762 record_asynch_buffer_change ();
6764 unbind_to (count
, Qnil
);
6767 /* Report all recent events of a change in process status
6768 (either run the sentinel or output a message).
6769 This is usually done while Emacs is waiting for keyboard input
6770 but can be done at other times. */
6773 status_notify (deleting_process
)
6774 struct Lisp_Process
*deleting_process
;
6776 register Lisp_Object proc
, buffer
;
6777 Lisp_Object tail
, msg
;
6778 struct gcpro gcpro1
, gcpro2
;
6782 /* We need to gcpro tail; if read_process_output calls a filter
6783 which deletes a process and removes the cons to which tail points
6784 from Vprocess_alist, and then causes a GC, tail is an unprotected
6788 /* Set this now, so that if new processes are created by sentinels
6789 that we run, we get called again to handle their status changes. */
6790 update_tick
= process_tick
;
6792 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6795 register struct Lisp_Process
*p
;
6797 proc
= Fcdr (XCAR (tail
));
6798 p
= XPROCESS (proc
);
6800 if (p
->tick
!= p
->update_tick
)
6802 p
->update_tick
= p
->tick
;
6804 /* If process is still active, read any output that remains. */
6805 while (! EQ (p
->filter
, Qt
)
6806 && ! EQ (p
->status
, Qconnect
)
6807 && ! EQ (p
->status
, Qlisten
)
6808 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6810 && p
!= deleting_process
6811 && read_process_output (proc
, p
->infd
) > 0);
6815 /* Get the text to use for the message. */
6816 if (p
->raw_status_new
)
6818 msg
= status_message (p
);
6820 /* If process is terminated, deactivate it or delete it. */
6822 if (CONSP (p
->status
))
6823 symbol
= XCAR (p
->status
);
6825 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6826 || EQ (symbol
, Qclosed
))
6828 if (delete_exited_processes
)
6829 remove_process (proc
);
6831 deactivate_process (proc
);
6834 /* The actions above may have further incremented p->tick.
6835 So set p->update_tick again
6836 so that an error in the sentinel will not cause
6837 this code to be run again. */
6838 p
->update_tick
= p
->tick
;
6839 /* Now output the message suitably. */
6840 if (!NILP (p
->sentinel
))
6841 exec_sentinel (proc
, msg
);
6842 /* Don't bother with a message in the buffer
6843 when a process becomes runnable. */
6844 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6846 Lisp_Object ro
, tem
;
6847 struct buffer
*old
= current_buffer
;
6848 int opoint
, opoint_byte
;
6849 int before
, before_byte
;
6851 ro
= XBUFFER (buffer
)->read_only
;
6853 /* Avoid error if buffer is deleted
6854 (probably that's why the process is dead, too) */
6855 if (NILP (XBUFFER (buffer
)->name
))
6857 Fset_buffer (buffer
);
6860 opoint_byte
= PT_BYTE
;
6861 /* Insert new output into buffer
6862 at the current end-of-output marker,
6863 thus preserving logical ordering of input and output. */
6864 if (XMARKER (p
->mark
)->buffer
)
6865 Fgoto_char (p
->mark
);
6867 SET_PT_BOTH (ZV
, ZV_BYTE
);
6870 before_byte
= PT_BYTE
;
6872 tem
= current_buffer
->read_only
;
6873 current_buffer
->read_only
= Qnil
;
6874 insert_string ("\nProcess ");
6875 Finsert (1, &p
->name
);
6876 insert_string (" ");
6878 current_buffer
->read_only
= tem
;
6879 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6881 if (opoint
>= before
)
6882 SET_PT_BOTH (opoint
+ (PT
- before
),
6883 opoint_byte
+ (PT_BYTE
- before_byte
));
6885 SET_PT_BOTH (opoint
, opoint_byte
);
6887 set_buffer_internal (old
);
6892 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6893 redisplay_preserve_echo_area (13);
6899 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6900 Sset_process_coding_system
, 1, 3, 0,
6901 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6902 DECODING will be used to decode subprocess output and ENCODING to
6903 encode subprocess input. */)
6904 (process
, decoding
, encoding
)
6905 register Lisp_Object process
, decoding
, encoding
;
6907 register struct Lisp_Process
*p
;
6909 CHECK_PROCESS (process
);
6910 p
= XPROCESS (process
);
6912 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6914 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6915 Fcheck_coding_system (decoding
);
6916 Fcheck_coding_system (encoding
);
6918 p
->decode_coding_system
= decoding
;
6919 p
->encode_coding_system
= encoding
;
6920 setup_process_coding_systems (process
);
6925 DEFUN ("process-coding-system",
6926 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6927 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6929 register Lisp_Object process
;
6931 CHECK_PROCESS (process
);
6932 return Fcons (XPROCESS (process
)->decode_coding_system
,
6933 XPROCESS (process
)->encode_coding_system
);
6936 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6937 Sset_process_filter_multibyte
, 2, 2, 0,
6938 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6939 If FLAG is non-nil, the filter is given multibyte strings.
6940 If FLAG is nil, the filter is given unibyte strings. In this case,
6941 all character code conversion except for end-of-line conversion is
6944 Lisp_Object process
, flag
;
6946 register struct Lisp_Process
*p
;
6948 CHECK_PROCESS (process
);
6949 p
= XPROCESS (process
);
6950 p
->filter_multibyte
= !NILP (flag
);
6951 setup_process_coding_systems (process
);
6956 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6957 Sprocess_filter_multibyte_p
, 1, 1, 0,
6958 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6960 Lisp_Object process
;
6962 register struct Lisp_Process
*p
;
6964 CHECK_PROCESS (process
);
6965 p
= XPROCESS (process
);
6967 return (p
->filter_multibyte
? Qt
: Qnil
);
6972 /* Add DESC to the set of keyboard input descriptors. */
6975 add_keyboard_wait_descriptor (desc
)
6978 FD_SET (desc
, &input_wait_mask
);
6979 FD_SET (desc
, &non_process_wait_mask
);
6980 if (desc
> max_keyboard_desc
)
6981 max_keyboard_desc
= desc
;
6984 static int add_gpm_wait_descriptor_called_flag
;
6987 add_gpm_wait_descriptor (desc
)
6990 if (! add_gpm_wait_descriptor_called_flag
)
6991 FD_CLR (0, &input_wait_mask
);
6992 add_gpm_wait_descriptor_called_flag
= 1;
6993 FD_SET (desc
, &input_wait_mask
);
6994 FD_SET (desc
, &gpm_wait_mask
);
6995 if (desc
> max_gpm_desc
)
6996 max_gpm_desc
= desc
;
6999 /* From now on, do not expect DESC to give keyboard input. */
7002 delete_keyboard_wait_descriptor (desc
)
7006 int lim
= max_keyboard_desc
;
7008 FD_CLR (desc
, &input_wait_mask
);
7009 FD_CLR (desc
, &non_process_wait_mask
);
7011 if (desc
== max_keyboard_desc
)
7012 for (fd
= 0; fd
< lim
; fd
++)
7013 if (FD_ISSET (fd
, &input_wait_mask
)
7014 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7015 && !FD_ISSET (fd
, &gpm_wait_mask
))
7016 max_keyboard_desc
= fd
;
7020 delete_gpm_wait_descriptor (desc
)
7024 int lim
= max_gpm_desc
;
7026 FD_CLR (desc
, &input_wait_mask
);
7027 FD_CLR (desc
, &non_process_wait_mask
);
7029 if (desc
== max_gpm_desc
)
7030 for (fd
= 0; fd
< lim
; fd
++)
7031 if (FD_ISSET (fd
, &input_wait_mask
)
7032 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7033 && !FD_ISSET (fd
, &non_process_wait_mask
))
7037 /* Return nonzero if *MASK has a bit set
7038 that corresponds to one of the keyboard input descriptors. */
7041 keyboard_bit_set (mask
)
7046 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7047 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7048 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7059 inhibit_sentinels
= 0;
7063 if (! noninteractive
|| initialized
)
7065 signal (SIGCHLD
, sigchld_handler
);
7068 FD_ZERO (&input_wait_mask
);
7069 FD_ZERO (&non_keyboard_wait_mask
);
7070 FD_ZERO (&non_process_wait_mask
);
7071 max_process_desc
= 0;
7073 #ifdef NON_BLOCKING_CONNECT
7074 FD_ZERO (&connect_wait_mask
);
7075 num_pending_connects
= 0;
7078 #ifdef ADAPTIVE_READ_BUFFERING
7079 process_output_delay_count
= 0;
7080 process_output_skip
= 0;
7083 /* Don't do this, it caused infinite select loops. The display
7084 method should call add_keyboard_wait_descriptor on stdin if it
7087 FD_SET (0, &input_wait_mask
);
7090 Vprocess_alist
= Qnil
;
7092 deleted_pid_list
= Qnil
;
7094 for (i
= 0; i
< MAXDESC
; i
++)
7096 chan_process
[i
] = Qnil
;
7097 proc_buffered_char
[i
] = -1;
7099 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7100 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7101 #ifdef DATAGRAM_SOCKETS
7102 bzero (datagram_address
, sizeof datagram_address
);
7107 Lisp_Object subfeatures
= Qnil
;
7108 struct socket_options
*sopt
;
7110 #define ADD_SUBFEATURE(key, val) \
7111 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7113 #ifdef NON_BLOCKING_CONNECT
7114 ADD_SUBFEATURE (QCnowait
, Qt
);
7116 #ifdef DATAGRAM_SOCKETS
7117 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7119 #ifdef HAVE_LOCAL_SOCKETS
7120 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7122 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7124 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7126 #ifdef HAVE_GETSOCKNAME
7127 ADD_SUBFEATURE (QCservice
, Qt
);
7129 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7130 ADD_SUBFEATURE (QCserver
, Qt
);
7133 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7134 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7136 Fprovide (intern ("make-network-process"), subfeatures
);
7138 #endif /* HAVE_SOCKETS */
7140 #if defined (DARWIN) || defined (MAC_OSX)
7141 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7142 processes. As such, we only change the default value. */
7145 char *release
= get_operating_system_release();
7146 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7147 && release
[1] == '.')) {
7148 Vprocess_connection_type
= Qnil
;
7157 Qprocessp
= intern ("processp");
7158 staticpro (&Qprocessp
);
7159 Qrun
= intern ("run");
7161 Qstop
= intern ("stop");
7163 Qsignal
= intern ("signal");
7164 staticpro (&Qsignal
);
7166 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7169 Qexit = intern ("exit");
7170 staticpro (&Qexit); */
7172 Qopen
= intern ("open");
7174 Qclosed
= intern ("closed");
7175 staticpro (&Qclosed
);
7176 Qconnect
= intern ("connect");
7177 staticpro (&Qconnect
);
7178 Qfailed
= intern ("failed");
7179 staticpro (&Qfailed
);
7180 Qlisten
= intern ("listen");
7181 staticpro (&Qlisten
);
7182 Qlocal
= intern ("local");
7183 staticpro (&Qlocal
);
7184 Qipv4
= intern ("ipv4");
7187 Qipv6
= intern ("ipv6");
7190 Qdatagram
= intern ("datagram");
7191 staticpro (&Qdatagram
);
7193 QCname
= intern (":name");
7194 staticpro (&QCname
);
7195 QCbuffer
= intern (":buffer");
7196 staticpro (&QCbuffer
);
7197 QChost
= intern (":host");
7198 staticpro (&QChost
);
7199 QCservice
= intern (":service");
7200 staticpro (&QCservice
);
7201 QCtype
= intern (":type");
7202 staticpro (&QCtype
);
7203 QClocal
= intern (":local");
7204 staticpro (&QClocal
);
7205 QCremote
= intern (":remote");
7206 staticpro (&QCremote
);
7207 QCcoding
= intern (":coding");
7208 staticpro (&QCcoding
);
7209 QCserver
= intern (":server");
7210 staticpro (&QCserver
);
7211 QCnowait
= intern (":nowait");
7212 staticpro (&QCnowait
);
7213 QCsentinel
= intern (":sentinel");
7214 staticpro (&QCsentinel
);
7215 QClog
= intern (":log");
7217 QCnoquery
= intern (":noquery");
7218 staticpro (&QCnoquery
);
7219 QCstop
= intern (":stop");
7220 staticpro (&QCstop
);
7221 QCoptions
= intern (":options");
7222 staticpro (&QCoptions
);
7223 QCplist
= intern (":plist");
7224 staticpro (&QCplist
);
7225 QCfilter_multibyte
= intern (":filter-multibyte");
7226 staticpro (&QCfilter_multibyte
);
7228 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7229 staticpro (&Qlast_nonmenu_event
);
7231 staticpro (&Vprocess_alist
);
7233 staticpro (&deleted_pid_list
);
7236 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7237 doc
: /* *Non-nil means delete processes immediately when they exit.
7238 A value of nil means don't delete them until `list-processes' is run. */);
7240 delete_exited_processes
= 1;
7242 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7243 doc
: /* Control type of device used to communicate with subprocesses.
7244 Values are nil to use a pipe, or t or `pty' to use a pty.
7245 The value has no effect if the system has no ptys or if all ptys are busy:
7246 then a pipe is used in any case.
7247 The value takes effect when `start-process' is called. */);
7248 Vprocess_connection_type
= Qt
;
7250 #ifdef ADAPTIVE_READ_BUFFERING
7251 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7252 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7253 On some systems, when Emacs reads the output from a subprocess, the output data
7254 is read in very small blocks, potentially resulting in very poor performance.
7255 This behavior can be remedied to some extent by setting this variable to a
7256 non-nil value, as it will automatically delay reading from such processes, to
7257 allow them to produce more output before Emacs tries to read it.
7258 If the value is t, the delay is reset after each write to the process; any other
7259 non-nil value means that the delay is not reset on write.
7260 The variable takes effect when `start-process' is called. */);
7261 Vprocess_adaptive_read_buffering
= Qt
;
7264 defsubr (&Sprocessp
);
7265 defsubr (&Sget_process
);
7266 defsubr (&Sget_buffer_process
);
7267 defsubr (&Sdelete_process
);
7268 defsubr (&Sprocess_status
);
7269 defsubr (&Sprocess_exit_status
);
7270 defsubr (&Sprocess_id
);
7271 defsubr (&Sprocess_name
);
7272 defsubr (&Sprocess_tty_name
);
7273 defsubr (&Sprocess_command
);
7274 defsubr (&Sset_process_buffer
);
7275 defsubr (&Sprocess_buffer
);
7276 defsubr (&Sprocess_mark
);
7277 defsubr (&Sset_process_filter
);
7278 defsubr (&Sprocess_filter
);
7279 defsubr (&Sset_process_sentinel
);
7280 defsubr (&Sprocess_sentinel
);
7281 defsubr (&Sset_process_window_size
);
7282 defsubr (&Sset_process_inherit_coding_system_flag
);
7283 defsubr (&Sprocess_inherit_coding_system_flag
);
7284 defsubr (&Sset_process_query_on_exit_flag
);
7285 defsubr (&Sprocess_query_on_exit_flag
);
7286 defsubr (&Sprocess_contact
);
7287 defsubr (&Sprocess_plist
);
7288 defsubr (&Sset_process_plist
);
7289 defsubr (&Slist_processes
);
7290 defsubr (&Sprocess_list
);
7291 defsubr (&Sstart_process
);
7293 defsubr (&Sset_network_process_option
);
7294 defsubr (&Smake_network_process
);
7295 defsubr (&Sformat_network_address
);
7296 #endif /* HAVE_SOCKETS */
7297 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7299 defsubr (&Snetwork_interface_list
);
7301 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7302 defsubr (&Snetwork_interface_info
);
7304 #endif /* HAVE_SOCKETS ... */
7305 #ifdef DATAGRAM_SOCKETS
7306 defsubr (&Sprocess_datagram_address
);
7307 defsubr (&Sset_process_datagram_address
);
7309 defsubr (&Saccept_process_output
);
7310 defsubr (&Sprocess_send_region
);
7311 defsubr (&Sprocess_send_string
);
7312 defsubr (&Sinterrupt_process
);
7313 defsubr (&Skill_process
);
7314 defsubr (&Squit_process
);
7315 defsubr (&Sstop_process
);
7316 defsubr (&Scontinue_process
);
7317 defsubr (&Sprocess_running_child_p
);
7318 defsubr (&Sprocess_send_eof
);
7319 defsubr (&Ssignal_process
);
7320 defsubr (&Swaiting_for_user_input_p
);
7321 /* defsubr (&Sprocess_connection); */
7322 defsubr (&Sset_process_coding_system
);
7323 defsubr (&Sprocess_coding_system
);
7324 defsubr (&Sset_process_filter_multibyte
);
7325 defsubr (&Sprocess_filter_multibyte_p
);
7329 #else /* not subprocesses */
7331 #include <sys/types.h>
7335 #include "systime.h"
7336 #include "charset.h"
7338 #include "termopts.h"
7339 #include "sysselect.h"
7341 extern int frame_garbaged
;
7343 extern EMACS_TIME
timer_check ();
7344 extern int timers_run
;
7348 /* As described above, except assuming that there are no subprocesses:
7350 Wait for timeout to elapse and/or keyboard input to be available.
7353 timeout in seconds, or
7354 zero for no limit, or
7355 -1 means gobble data immediately available but don't wait for any.
7357 read_kbd is a Lisp_Object:
7358 0 to ignore keyboard input, or
7359 1 to return when input is available, or
7360 -1 means caller will actually read the input, so don't throw to
7363 see full version for other parameters. We know that wait_proc will
7364 always be NULL, since `subprocesses' isn't defined.
7366 do_display != 0 means redisplay should be done to show subprocess
7367 output that arrives.
7369 Return true if we received input from any process. */
7372 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7373 wait_for_cell
, wait_proc
, just_wait_proc
)
7374 int time_limit
, microsecs
, read_kbd
, do_display
;
7375 Lisp_Object wait_for_cell
;
7376 struct Lisp_Process
*wait_proc
;
7380 EMACS_TIME end_time
, timeout
;
7381 SELECT_TYPE waitchannels
;
7384 /* What does time_limit really mean? */
7385 if (time_limit
|| microsecs
)
7387 EMACS_GET_TIME (end_time
);
7388 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7389 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7392 /* Turn off periodic alarms (in case they are in use)
7393 and then turn off any other atimers,
7394 because the select emulator uses alarms. */
7396 turn_on_atimers (0);
7400 int timeout_reduced_for_timers
= 0;
7402 /* If calling from keyboard input, do not quit
7403 since we want to return C-g as an input character.
7404 Otherwise, do pending quit if requested. */
7408 /* Exit now if the cell we're waiting for became non-nil. */
7409 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7412 /* Compute time from now till when time limit is up */
7413 /* Exit if already run out */
7414 if (time_limit
== -1)
7416 /* -1 specified for timeout means
7417 gobble output available now
7418 but don't wait at all. */
7420 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7422 else if (time_limit
|| microsecs
)
7424 EMACS_GET_TIME (timeout
);
7425 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7426 if (EMACS_TIME_NEG_P (timeout
))
7431 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7434 /* If our caller will not immediately handle keyboard events,
7435 run timer events directly.
7436 (Callers that will immediately read keyboard events
7437 call timer_delay on their own.) */
7438 if (NILP (wait_for_cell
))
7440 EMACS_TIME timer_delay
;
7444 int old_timers_run
= timers_run
;
7445 timer_delay
= timer_check (1);
7446 if (timers_run
!= old_timers_run
&& do_display
)
7447 /* We must retry, since a timer may have requeued itself
7448 and that could alter the time delay. */
7449 redisplay_preserve_echo_area (14);
7453 while (!detect_input_pending ());
7455 /* If there is unread keyboard input, also return. */
7457 && requeued_events_pending_p ())
7460 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7462 EMACS_TIME difference
;
7463 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7464 if (EMACS_TIME_NEG_P (difference
))
7466 timeout
= timer_delay
;
7467 timeout_reduced_for_timers
= 1;
7472 /* Cause C-g and alarm signals to take immediate action,
7473 and cause input available signals to zero out timeout. */
7475 set_waiting_for_input (&timeout
);
7477 /* Wait till there is something to do. */
7479 if (! read_kbd
&& NILP (wait_for_cell
))
7480 FD_ZERO (&waitchannels
);
7482 FD_SET (0, &waitchannels
);
7484 /* If a frame has been newly mapped and needs updating,
7485 reprocess its display stuff. */
7486 if (frame_garbaged
&& do_display
)
7488 clear_waiting_for_input ();
7489 redisplay_preserve_echo_area (15);
7491 set_waiting_for_input (&timeout
);
7494 if (read_kbd
&& detect_input_pending ())
7497 FD_ZERO (&waitchannels
);
7500 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7505 /* Make C-g and alarm signals set flags again */
7506 clear_waiting_for_input ();
7508 /* If we woke up due to SIGWINCH, actually change size now. */
7509 do_pending_window_change (0);
7511 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7512 /* We waited the full specified time, so return now. */
7517 /* If the system call was interrupted, then go around the
7519 if (xerrno
== EINTR
)
7520 FD_ZERO (&waitchannels
);
7522 error ("select error: %s", emacs_strerror (xerrno
));
7525 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7526 /* System sometimes fails to deliver SIGIO. */
7527 kill (getpid (), SIGIO
);
7530 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7531 kill (getpid (), SIGIO
);
7534 /* Check for keyboard input */
7537 && detect_input_pending_run_timers (do_display
))
7539 swallow_events (do_display
);
7540 if (detect_input_pending_run_timers (do_display
))
7544 /* If there is unread keyboard input, also return. */
7546 && requeued_events_pending_p ())
7549 /* If wait_for_cell. check for keyboard input
7550 but don't run any timers.
7551 ??? (It seems wrong to me to check for keyboard
7552 input at all when wait_for_cell, but the code
7553 has been this way since July 1994.
7554 Try changing this after version 19.31.) */
7555 if (! NILP (wait_for_cell
)
7556 && detect_input_pending ())
7558 swallow_events (do_display
);
7559 if (detect_input_pending ())
7563 /* Exit now if the cell we're waiting for became non-nil. */
7564 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7574 /* Don't confuse make-docfile by having two doc strings for this function.
7575 make-docfile does not pay attention to #if, for good reason! */
7576 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7579 register Lisp_Object name
;
7584 /* Don't confuse make-docfile by having two doc strings for this function.
7585 make-docfile does not pay attention to #if, for good reason! */
7586 DEFUN ("process-inherit-coding-system-flag",
7587 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7591 register Lisp_Object process
;
7593 /* Ignore the argument and return the value of
7594 inherit-process-coding-system. */
7595 return inherit_process_coding_system
? Qt
: Qnil
;
7598 /* Kill all processes associated with `buffer'.
7599 If `buffer' is nil, kill all processes.
7600 Since we have no subprocesses, this does nothing. */
7603 kill_buffer_processes (buffer
)
7616 QCtype
= intern (":type");
7617 staticpro (&QCtype
);
7619 defsubr (&Sget_buffer_process
);
7620 defsubr (&Sprocess_inherit_coding_system_flag
);
7624 #endif /* not subprocesses */
7626 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7627 (do not change this comment) */