1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
37 /* Only MS-DOS does not define `subprocesses'. */
40 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <arpa/inet.h>
45 /* Are local (unix) sockets supported? */
46 #if defined (HAVE_SYS_UN_H)
47 #if !defined (AF_LOCAL) && defined (AF_UNIX)
48 #define AF_LOCAL AF_UNIX
51 #define HAVE_LOCAL_SOCKETS
56 #include <sys/ioctl.h>
57 #if defined (HAVE_NET_IF_H)
59 #endif /* HAVE_NET_IF_H */
61 #if defined (HAVE_IFADDRS_H)
62 /* Must be after net/if.h */
65 /* We only use structs from this header when we use getifaddrs. */
66 #if defined (HAVE_NET_IF_DL_H)
67 #include <net/if_dl.h>
77 #include <netinet/in.h>
78 #include <arpa/nameser.h>
90 #endif /* subprocesses */
97 #include "character.h"
101 #include "termhooks.h"
102 #include "termopts.h"
103 #include "commands.h"
104 #include "keyboard.h"
105 #include "blockinput.h"
106 #include "dispextern.h"
107 #include "composite.h"
109 #include "sysselect.h"
110 #include "syssignal.h"
116 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
117 #include "xgselect.h"
123 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
124 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
125 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
126 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
127 Lisp_Object QCname
, QCtype
;
129 /* Non-zero if keyboard input is on hold, zero otherwise. */
131 static int kbd_is_on_hold
;
133 /* Nonzero means don't run process sentinels. This is used
135 int inhibit_sentinels
;
139 Lisp_Object Qprocessp
;
140 static Lisp_Object Qrun
, Qstop
, Qsignal
;
141 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
143 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
144 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
146 static Lisp_Object Qipv6
;
148 static Lisp_Object QCport
, QCprocess
;
150 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
151 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
152 static Lisp_Object QCbuffer
, QChost
, QCservice
;
153 static Lisp_Object QClocal
, QCremote
, QCcoding
;
154 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
155 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
156 static Lisp_Object Qlast_nonmenu_event
;
157 /* QCfamily is declared and initialized in xfaces.c,
158 QCfilter in keyboard.c. */
159 extern Lisp_Object QCfamily
, QCfilter
;
161 /* Qexit is declared and initialized in eval.c. */
163 /* QCfamily is defined in xfaces.c. */
164 extern Lisp_Object QCfamily
;
165 /* QCfilter is defined in keyboard.c. */
166 extern Lisp_Object QCfilter
;
168 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
169 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
170 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
171 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
177 /* Number of events of change of status of a process. */
178 static int process_tick
;
179 /* Number of events for which the user or sentinel has been notified. */
180 static int update_tick
;
182 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
184 /* Only W32 has this, it really means that select can't take write mask. */
185 #ifdef BROKEN_NON_BLOCKING_CONNECT
186 #undef NON_BLOCKING_CONNECT
187 #define SELECT_CANT_DO_WRITE_MASK
189 #ifndef NON_BLOCKING_CONNECT
191 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
192 #if defined (O_NONBLOCK) || defined (O_NDELAY)
193 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
194 #define NON_BLOCKING_CONNECT
195 #endif /* EWOULDBLOCK || EINPROGRESS */
196 #endif /* O_NONBLOCK || O_NDELAY */
197 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
198 #endif /* HAVE_SELECT */
199 #endif /* NON_BLOCKING_CONNECT */
200 #endif /* BROKEN_NON_BLOCKING_CONNECT */
202 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
203 this system. We need to read full packets, so we need a
204 "non-destructive" select. So we require either native select,
205 or emulation of select using FIONREAD. */
207 #ifdef BROKEN_DATAGRAM_SOCKETS
208 #undef DATAGRAM_SOCKETS
210 #ifndef DATAGRAM_SOCKETS
211 #if defined (HAVE_SELECT) || defined (FIONREAD)
212 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
213 #define DATAGRAM_SOCKETS
214 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
215 #endif /* HAVE_SELECT || FIONREAD */
216 #endif /* DATAGRAM_SOCKETS */
217 #endif /* BROKEN_DATAGRAM_SOCKETS */
219 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
220 # define HAVE_SEQPACKET
223 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
224 #ifdef EMACS_HAS_USECS
225 #define ADAPTIVE_READ_BUFFERING
229 #ifdef ADAPTIVE_READ_BUFFERING
230 #define READ_OUTPUT_DELAY_INCREMENT 10000
231 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
232 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
234 /* Number of processes which have a non-zero read_output_delay,
235 and therefore might be delayed for adaptive read buffering. */
237 static int process_output_delay_count
;
239 /* Non-zero if any process has non-nil read_output_skip. */
241 static int process_output_skip
;
244 #define process_output_delay_count 0
247 static Lisp_Object
Fget_process (Lisp_Object
);
248 static void create_process (Lisp_Object
, char **, Lisp_Object
);
250 static int keyboard_bit_set (SELECT_TYPE
*);
252 static void deactivate_process (Lisp_Object
);
253 static void status_notify (struct Lisp_Process
*);
254 static int read_process_output (Lisp_Object
, int);
255 static void create_pty (Lisp_Object
);
257 /* If we support a window system, turn on the code to poll periodically
258 to detect C-g. It isn't actually used when doing interrupt input. */
259 #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS)
260 #define POLL_FOR_INPUT
263 static Lisp_Object
get_process (register Lisp_Object name
);
264 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
266 /* Mask of bits indicating the descriptors that we wait for input on. */
268 static SELECT_TYPE input_wait_mask
;
270 /* Mask that excludes keyboard input descriptor(s). */
272 static SELECT_TYPE non_keyboard_wait_mask
;
274 /* Mask that excludes process input descriptor(s). */
276 static SELECT_TYPE non_process_wait_mask
;
278 /* Mask for selecting for write. */
280 static SELECT_TYPE write_mask
;
282 #ifdef NON_BLOCKING_CONNECT
283 /* Mask of bits indicating the descriptors that we wait for connect to
284 complete on. Once they complete, they are removed from this mask
285 and added to the input_wait_mask and non_keyboard_wait_mask. */
287 static SELECT_TYPE connect_wait_mask
;
289 /* Number of bits set in connect_wait_mask. */
290 static int num_pending_connects
;
291 #endif /* NON_BLOCKING_CONNECT */
293 /* The largest descriptor currently in use for a process object. */
294 static int max_process_desc
;
296 /* The largest descriptor currently in use for input. */
297 static int max_input_desc
;
299 /* Indexed by descriptor, gives the process (if any) for that descriptor */
300 static Lisp_Object chan_process
[MAXDESC
];
302 /* Alist of elements (NAME . PROCESS) */
303 static Lisp_Object Vprocess_alist
;
305 /* Buffered-ahead input char from process, indexed by channel.
306 -1 means empty (no char is buffered).
307 Used on sys V where the only way to tell if there is any
308 output from the process is to read at least one char.
309 Always -1 on systems that support FIONREAD. */
311 static int proc_buffered_char
[MAXDESC
];
313 /* Table of `struct coding-system' for each process. */
314 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
315 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
317 #ifdef DATAGRAM_SOCKETS
318 /* Table of `partner address' for datagram sockets. */
319 static struct sockaddr_and_len
{
322 } datagram_address
[MAXDESC
];
323 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
324 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
326 #define DATAGRAM_CHAN_P(chan) (0)
327 #define DATAGRAM_CONN_P(proc) (0)
330 /* Maximum number of bytes to send to a pty without an eof. */
331 static int pty_max_bytes
;
335 static struct fd_callback_data
341 int condition
; /* mask of the defines above. */
342 } fd_callback_info
[MAXDESC
];
345 /* Add a file descriptor FD to be monitored for when read is possible.
346 When read is possible, call FUNC with argument DATA. */
349 add_read_fd (int fd
, fd_callback func
, void *data
)
351 xassert (fd
< MAXDESC
);
352 add_keyboard_wait_descriptor (fd
);
354 fd_callback_info
[fd
].func
= func
;
355 fd_callback_info
[fd
].data
= data
;
356 fd_callback_info
[fd
].condition
|= FOR_READ
;
359 /* Stop monitoring file descriptor FD for when read is possible. */
362 delete_read_fd (int fd
)
364 xassert (fd
< MAXDESC
);
365 delete_keyboard_wait_descriptor (fd
);
367 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
368 if (fd_callback_info
[fd
].condition
== 0)
370 fd_callback_info
[fd
].func
= 0;
371 fd_callback_info
[fd
].data
= 0;
375 /* Add a file descriptor FD to be monitored for when write is possible.
376 When write is possible, call FUNC with argument DATA. */
379 add_write_fd (int fd
, fd_callback func
, void *data
)
381 xassert (fd
< MAXDESC
);
382 FD_SET (fd
, &write_mask
);
383 if (fd
> max_input_desc
)
386 fd_callback_info
[fd
].func
= func
;
387 fd_callback_info
[fd
].data
= data
;
388 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
391 /* Stop monitoring file descriptor FD for when write is possible. */
394 delete_write_fd (int fd
)
396 int lim
= max_input_desc
;
398 xassert (fd
< MAXDESC
);
399 FD_CLR (fd
, &write_mask
);
400 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
401 if (fd_callback_info
[fd
].condition
== 0)
403 fd_callback_info
[fd
].func
= 0;
404 fd_callback_info
[fd
].data
= 0;
406 if (fd
== max_input_desc
)
407 for (fd
= lim
; fd
>= 0; fd
--)
408 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
418 /* Compute the Lisp form of the process status, p->status, from
419 the numeric status that was returned by `wait'. */
421 static Lisp_Object
status_convert (int);
424 update_status (struct Lisp_Process
*p
)
426 eassert (p
->raw_status_new
);
427 p
->status
= status_convert (p
->raw_status
);
428 p
->raw_status_new
= 0;
431 /* Convert a process status word in Unix format to
432 the list that we use internally. */
435 status_convert (int w
)
438 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
439 else if (WIFEXITED (w
))
440 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
441 WCOREDUMP (w
) ? Qt
: Qnil
));
442 else if (WIFSIGNALED (w
))
443 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
444 WCOREDUMP (w
) ? Qt
: Qnil
));
449 /* Given a status-list, extract the three pieces of information
450 and store them individually through the three pointers. */
453 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
467 *code
= XFASTINT (XCAR (tem
));
469 *coredump
= !NILP (tem
);
473 /* Return a string describing a process status list. */
476 status_message (struct Lisp_Process
*p
)
478 Lisp_Object status
= p
->status
;
481 Lisp_Object string
, string2
;
483 decode_status (status
, &symbol
, &code
, &coredump
);
485 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
488 synchronize_system_messages_locale ();
489 signame
= strsignal (code
);
491 string
= build_string ("unknown");
496 string
= make_unibyte_string (signame
, strlen (signame
));
497 if (! NILP (Vlocale_coding_system
))
498 string
= (code_convert_string_norecord
499 (string
, Vlocale_coding_system
, 0));
500 c1
= STRING_CHAR (SDATA (string
));
503 Faset (string
, make_number (0), make_number (c2
));
505 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
506 return concat2 (string
, string2
);
508 else if (EQ (symbol
, Qexit
))
511 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
513 return build_string ("finished\n");
514 string
= Fnumber_to_string (make_number (code
));
515 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
516 return concat3 (build_string ("exited abnormally with code "),
519 else if (EQ (symbol
, Qfailed
))
521 string
= Fnumber_to_string (make_number (code
));
522 string2
= build_string ("\n");
523 return concat3 (build_string ("failed with code "),
527 return Fcopy_sequence (Fsymbol_name (symbol
));
532 /* The file name of the pty opened by allocate_pty. */
533 static char pty_name
[24];
535 /* Open an available pty, returning a file descriptor.
536 Return -1 on failure.
537 The file name of the terminal corresponding to the pty
538 is left in the variable pty_name. */
549 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
550 for (i
= 0; i
< 16; i
++)
553 #ifdef PTY_NAME_SPRINTF
556 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
557 #endif /* no PTY_NAME_SPRINTF */
561 #else /* no PTY_OPEN */
563 { /* Some systems name their pseudoterminals so that there are gaps in
564 the usual sequence - for example, on HP9000/S700 systems, there
565 are no pseudoterminals with names ending in 'f'. So we wait for
566 three failures in a row before deciding that we've reached the
568 int failed_count
= 0;
571 if (stat (pty_name
, &stb
) < 0)
574 if (failed_count
>= 3)
581 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
583 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
586 #endif /* no PTY_OPEN */
590 /* check to make certain that both sides are available
591 this avoids a nasty yet stupid bug in rlogins */
592 #ifdef PTY_TTY_NAME_SPRINTF
595 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
596 #endif /* no PTY_TTY_NAME_SPRINTF */
597 if (access (pty_name
, 6) != 0)
612 #endif /* HAVE_PTYS */
615 make_process (Lisp_Object name
)
617 register Lisp_Object val
, tem
, name1
;
618 register struct Lisp_Process
*p
;
619 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
622 p
= allocate_process ();
630 p
->raw_status_new
= 0;
632 p
->mark
= Fmake_marker ();
633 p
->kill_without_query
= 0;
635 #ifdef ADAPTIVE_READ_BUFFERING
636 p
->adaptive_read_buffering
= 0;
637 p
->read_output_delay
= 0;
638 p
->read_output_skip
= 0;
642 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
643 p
->gnutls_log_level
= 0;
647 /* If name is already in use, modify it until it is unused. */
652 tem
= Fget_process (name1
);
653 if (NILP (tem
)) break;
654 sprintf (suffix
, "<%"pMd
">", i
);
655 name1
= concat2 (name
, build_string (suffix
));
659 XSETPROCESS (val
, p
);
660 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
665 remove_process (register Lisp_Object proc
)
667 register Lisp_Object pair
;
669 pair
= Frassq (proc
, Vprocess_alist
);
670 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
672 deactivate_process (proc
);
676 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
677 doc
: /* Return t if OBJECT is a process. */)
680 return PROCESSP (object
) ? Qt
: Qnil
;
683 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
684 doc
: /* Return the process named NAME, or nil if there is none. */)
685 (register Lisp_Object name
)
690 return Fcdr (Fassoc (name
, Vprocess_alist
));
693 /* This is how commands for the user decode process arguments. It
694 accepts a process, a process name, a buffer, a buffer name, or nil.
695 Buffers denote the first process in the buffer, and nil denotes the
699 get_process (register Lisp_Object name
)
701 register Lisp_Object proc
, obj
;
704 obj
= Fget_process (name
);
706 obj
= Fget_buffer (name
);
708 error ("Process %s does not exist", SDATA (name
));
710 else if (NILP (name
))
711 obj
= Fcurrent_buffer ();
715 /* Now obj should be either a buffer object or a process object.
719 proc
= Fget_buffer_process (obj
);
721 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
733 /* Fdelete_process promises to immediately forget about the process, but in
734 reality, Emacs needs to remember those processes until they have been
735 treated by sigchld_handler; otherwise this handler would consider the
736 process as being synchronous and say that the synchronous process is
738 static Lisp_Object deleted_pid_list
;
741 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
742 doc
: /* Delete PROCESS: kill it and forget about it immediately.
743 PROCESS may be a process, a buffer, the name of a process or buffer, or
744 nil, indicating the current buffer's process. */)
745 (register Lisp_Object process
)
747 register struct Lisp_Process
*p
;
749 process
= get_process (process
);
750 p
= XPROCESS (process
);
752 p
->raw_status_new
= 0;
753 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
755 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
756 p
->tick
= ++process_tick
;
758 redisplay_preserve_echo_area (13);
760 else if (p
->infd
>= 0)
766 /* No problem storing the pid here, as it is still in Vprocess_alist. */
767 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
768 /* GC treated elements set to nil. */
769 Fdelq (Qnil
, deleted_pid_list
));
770 /* If the process has already signaled, remove it from the list. */
771 if (p
->raw_status_new
)
774 if (CONSP (p
->status
))
775 symbol
= XCAR (p
->status
);
776 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
778 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
782 Fkill_process (process
, Qnil
);
783 /* Do this now, since remove_process will make sigchld_handler do nothing. */
785 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
786 p
->tick
= ++process_tick
;
788 redisplay_preserve_echo_area (13);
791 remove_process (process
);
795 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
796 doc
: /* Return the status of PROCESS.
797 The returned value is one of the following symbols:
798 run -- for a process that is running.
799 stop -- for a process stopped but continuable.
800 exit -- for a process that has exited.
801 signal -- for a process that has got a fatal signal.
802 open -- for a network stream connection that is open.
803 listen -- for a network stream server that is listening.
804 closed -- for a network stream connection that is closed.
805 connect -- when waiting for a non-blocking connection to complete.
806 failed -- when a non-blocking connection has failed.
807 nil -- if arg is a process name and no such process exists.
808 PROCESS may be a process, a buffer, the name of a process, or
809 nil, indicating the current buffer's process. */)
810 (register Lisp_Object process
)
812 register struct Lisp_Process
*p
;
813 register Lisp_Object status
;
815 if (STRINGP (process
))
816 process
= Fget_process (process
);
818 process
= get_process (process
);
823 p
= XPROCESS (process
);
824 if (p
->raw_status_new
)
828 status
= XCAR (status
);
829 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
831 if (EQ (status
, Qexit
))
833 else if (EQ (p
->command
, Qt
))
835 else if (EQ (status
, Qrun
))
841 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
843 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
844 If PROCESS has not yet exited or died, return 0. */)
845 (register Lisp_Object process
)
847 CHECK_PROCESS (process
);
848 if (XPROCESS (process
)->raw_status_new
)
849 update_status (XPROCESS (process
));
850 if (CONSP (XPROCESS (process
)->status
))
851 return XCAR (XCDR (XPROCESS (process
)->status
));
852 return make_number (0);
855 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
856 doc
: /* Return the process id of PROCESS.
857 This is the pid of the external process which PROCESS uses or talks to.
858 For a network connection, this value is nil. */)
859 (register Lisp_Object process
)
863 CHECK_PROCESS (process
);
864 pid
= XPROCESS (process
)->pid
;
865 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
868 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
869 doc
: /* Return the name of PROCESS, as a string.
870 This is the name of the program invoked in PROCESS,
871 possibly modified to make it unique among process names. */)
872 (register Lisp_Object process
)
874 CHECK_PROCESS (process
);
875 return XPROCESS (process
)->name
;
878 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
879 doc
: /* Return the command that was executed to start PROCESS.
880 This is a list of strings, the first string being the program executed
881 and the rest of the strings being the arguments given to it.
882 For a network or serial process, this is nil (process is running) or t
883 \(process is stopped). */)
884 (register Lisp_Object process
)
886 CHECK_PROCESS (process
);
887 return XPROCESS (process
)->command
;
890 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
891 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
892 This is the terminal that the process itself reads and writes on,
893 not the name of the pty that Emacs uses to talk with that terminal. */)
894 (register Lisp_Object process
)
896 CHECK_PROCESS (process
);
897 return XPROCESS (process
)->tty_name
;
900 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
902 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
904 (register Lisp_Object process
, Lisp_Object buffer
)
906 struct Lisp_Process
*p
;
908 CHECK_PROCESS (process
);
910 CHECK_BUFFER (buffer
);
911 p
= XPROCESS (process
);
913 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
914 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
915 setup_process_coding_systems (process
);
919 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
921 doc
: /* Return the buffer PROCESS is associated with.
922 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
923 (register Lisp_Object process
)
925 CHECK_PROCESS (process
);
926 return XPROCESS (process
)->buffer
;
929 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
931 doc
: /* Return the marker for the end of the last output from PROCESS. */)
932 (register Lisp_Object process
)
934 CHECK_PROCESS (process
);
935 return XPROCESS (process
)->mark
;
938 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
940 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
941 A value of t means stop accepting output from the process.
943 When a process has a filter, its buffer is not used for output.
944 Instead, each time it does output, the entire string of output is
945 passed to the filter.
947 The filter gets two arguments: the process and the string of output.
948 The string argument is normally a multibyte string, except:
949 - if the process' input coding system is no-conversion or raw-text,
950 it is a unibyte string (the non-converted input), or else
951 - if `default-enable-multibyte-characters' is nil, it is a unibyte
952 string (the result of converting the decoded input multibyte
953 string to unibyte with `string-make-unibyte'). */)
954 (register Lisp_Object process
, Lisp_Object filter
)
956 struct Lisp_Process
*p
;
958 CHECK_PROCESS (process
);
959 p
= XPROCESS (process
);
961 /* Don't signal an error if the process' input file descriptor
962 is closed. This could make debugging Lisp more difficult,
963 for example when doing something like
965 (setq process (start-process ...))
967 (set-process-filter process ...) */
971 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
973 FD_CLR (p
->infd
, &input_wait_mask
);
974 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
976 else if (EQ (p
->filter
, Qt
)
977 /* Network or serial process not stopped: */
978 && !EQ (p
->command
, Qt
))
980 FD_SET (p
->infd
, &input_wait_mask
);
981 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
986 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
987 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
988 setup_process_coding_systems (process
);
992 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
994 doc
: /* Returns the filter function of PROCESS; nil if none.
995 See `set-process-filter' for more info on filter functions. */)
996 (register Lisp_Object process
)
998 CHECK_PROCESS (process
);
999 return XPROCESS (process
)->filter
;
1002 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1004 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1005 The sentinel is called as a function when the process changes state.
1006 It gets two arguments: the process, and a string describing the change. */)
1007 (register Lisp_Object process
, Lisp_Object sentinel
)
1009 struct Lisp_Process
*p
;
1011 CHECK_PROCESS (process
);
1012 p
= XPROCESS (process
);
1014 p
->sentinel
= sentinel
;
1015 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1016 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1020 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1022 doc
: /* Return the sentinel of PROCESS; nil if none.
1023 See `set-process-sentinel' for more info on sentinels. */)
1024 (register Lisp_Object process
)
1026 CHECK_PROCESS (process
);
1027 return XPROCESS (process
)->sentinel
;
1030 DEFUN ("set-process-window-size", Fset_process_window_size
,
1031 Sset_process_window_size
, 3, 3, 0,
1032 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1033 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1035 CHECK_PROCESS (process
);
1036 CHECK_RANGED_INTEGER (0, height
, INT_MAX
);
1037 CHECK_RANGED_INTEGER (0, width
, INT_MAX
);
1039 if (XPROCESS (process
)->infd
< 0
1040 || set_window_size (XPROCESS (process
)->infd
,
1041 XINT (height
), XINT (width
)) <= 0)
1047 DEFUN ("set-process-inherit-coding-system-flag",
1048 Fset_process_inherit_coding_system_flag
,
1049 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1050 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1051 If the second argument FLAG is non-nil, then the variable
1052 `buffer-file-coding-system' of the buffer associated with PROCESS
1053 will be bound to the value of the coding system used to decode
1056 This is useful when the coding system specified for the process buffer
1057 leaves either the character code conversion or the end-of-line conversion
1058 unspecified, or if the coding system used to decode the process output
1059 is more appropriate for saving the process buffer.
1061 Binding the variable `inherit-process-coding-system' to non-nil before
1062 starting the process is an alternative way of setting the inherit flag
1063 for the process which will run. */)
1064 (register Lisp_Object process
, Lisp_Object flag
)
1066 CHECK_PROCESS (process
);
1067 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1071 DEFUN ("set-process-query-on-exit-flag",
1072 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1074 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1075 If the second argument FLAG is non-nil, Emacs will query the user before
1076 exiting or killing a buffer if PROCESS is running. */)
1077 (register Lisp_Object process
, Lisp_Object flag
)
1079 CHECK_PROCESS (process
);
1080 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1084 DEFUN ("process-query-on-exit-flag",
1085 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1087 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1088 (register Lisp_Object process
)
1090 CHECK_PROCESS (process
);
1091 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1094 #ifdef DATAGRAM_SOCKETS
1095 static Lisp_Object
Fprocess_datagram_address (Lisp_Object
);
1098 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1100 doc
: /* Return the contact info of PROCESS; t for a real child.
1101 For a network or serial connection, the value depends on the optional
1102 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1103 SERVICE) for a network connection or (PORT SPEED) for a serial
1104 connection. If KEY is t, the complete contact information for the
1105 connection is returned, else the specific value for the keyword KEY is
1106 returned. See `make-network-process' or `make-serial-process' for a
1107 list of keywords. */)
1108 (register Lisp_Object process
, Lisp_Object key
)
1110 Lisp_Object contact
;
1112 CHECK_PROCESS (process
);
1113 contact
= XPROCESS (process
)->childp
;
1115 #ifdef DATAGRAM_SOCKETS
1116 if (DATAGRAM_CONN_P (process
)
1117 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1118 contact
= Fplist_put (contact
, QCremote
,
1119 Fprocess_datagram_address (process
));
1122 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1124 if (NILP (key
) && NETCONN_P (process
))
1125 return Fcons (Fplist_get (contact
, QChost
),
1126 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1127 if (NILP (key
) && SERIALCONN_P (process
))
1128 return Fcons (Fplist_get (contact
, QCport
),
1129 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1130 return Fplist_get (contact
, key
);
1133 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1135 doc
: /* Return the plist of PROCESS. */)
1136 (register Lisp_Object process
)
1138 CHECK_PROCESS (process
);
1139 return XPROCESS (process
)->plist
;
1142 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1144 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1145 (register Lisp_Object process
, Lisp_Object plist
)
1147 CHECK_PROCESS (process
);
1150 XPROCESS (process
)->plist
= plist
;
1154 #if 0 /* Turned off because we don't currently record this info
1155 in the process. Perhaps add it. */
1156 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1157 doc
: /* Return the connection type of PROCESS.
1158 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1159 a socket connection. */)
1160 (Lisp_Object process
)
1162 return XPROCESS (process
)->type
;
1166 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1167 doc
: /* Return the connection type of PROCESS.
1168 The value is either the symbol `real', `network', or `serial'.
1169 PROCESS may be a process, a buffer, the name of a process or buffer, or
1170 nil, indicating the current buffer's process. */)
1171 (Lisp_Object process
)
1174 proc
= get_process (process
);
1175 return XPROCESS (proc
)->type
;
1178 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1180 doc
: /* Convert network ADDRESS from internal format to a string.
1181 A 4 or 5 element vector represents an IPv4 address (with port number).
1182 An 8 or 9 element vector represents an IPv6 address (with port number).
1183 If optional second argument OMIT-PORT is non-nil, don't include a port
1184 number in the string, even when present in ADDRESS.
1185 Returns nil if format of ADDRESS is invalid. */)
1186 (Lisp_Object address
, Lisp_Object omit_port
)
1191 if (STRINGP (address
)) /* AF_LOCAL */
1194 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1196 register struct Lisp_Vector
*p
= XVECTOR (address
);
1197 ptrdiff_t size
= p
->header
.size
;
1198 Lisp_Object args
[10];
1201 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1203 args
[0] = build_string ("%d.%d.%d.%d");
1208 args
[0] = build_string ("%d.%d.%d.%d:%d");
1211 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1213 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1218 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1224 for (i
= 0; i
< nargs
; i
++)
1226 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1229 if (nargs
<= 5 /* IPv4 */
1230 && i
< 4 /* host, not port */
1231 && XINT (p
->contents
[i
]) > 255)
1234 args
[i
+1] = p
->contents
[i
];
1237 return Fformat (nargs
+1, args
);
1240 if (CONSP (address
))
1242 Lisp_Object args
[2];
1243 args
[0] = build_string ("<Family %d>");
1244 args
[1] = Fcar (address
);
1245 return Fformat (2, args
);
1251 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1252 doc
: /* Return a list of all processes. */)
1255 return Fmapcar (Qcdr
, Vprocess_alist
);
1258 /* Starting asynchronous inferior processes. */
1260 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1262 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1263 doc
: /* Start a program in a subprocess. Return the process object for it.
1264 NAME is name for process. It is modified if necessary to make it unique.
1265 BUFFER is the buffer (or buffer name) to associate with the process.
1267 Process output (both standard output and standard error streams) goes
1268 at end of BUFFER, unless you specify an output stream or filter
1269 function to handle the output. BUFFER may also be nil, meaning that
1270 this process is not associated with any buffer.
1272 PROGRAM is the program file name. It is searched for in `exec-path'
1273 (which see). If nil, just associate a pty with the buffer. Remaining
1274 arguments are strings to give program as arguments.
1276 If you want to separate standard output from standard error, invoke
1277 the command through a shell and redirect one of them using the shell
1280 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1281 (ptrdiff_t nargs
, Lisp_Object
*args
)
1283 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1284 register unsigned char **new_argv
;
1286 ptrdiff_t count
= SPECPDL_INDEX ();
1290 buffer
= Fget_buffer_create (buffer
);
1292 /* Make sure that the child will be able to chdir to the current
1293 buffer's current directory, or its unhandled equivalent. We
1294 can't just have the child check for an error when it does the
1295 chdir, since it's in a vfork.
1297 We have to GCPRO around this because Fexpand_file_name and
1298 Funhandled_file_name_directory might call a file name handling
1299 function. The argument list is protected by the caller, so all
1300 we really have to worry about is buffer. */
1302 struct gcpro gcpro1
, gcpro2
;
1304 current_dir
= BVAR (current_buffer
, directory
);
1306 GCPRO2 (buffer
, current_dir
);
1308 current_dir
= Funhandled_file_name_directory (current_dir
);
1309 if (NILP (current_dir
))
1310 /* If the file name handler says that current_dir is unreachable, use
1311 a sensible default. */
1312 current_dir
= build_string ("~/");
1313 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1314 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1315 report_file_error ("Setting current directory",
1316 Fcons (BVAR (current_buffer
, directory
), Qnil
));
1322 CHECK_STRING (name
);
1326 if (!NILP (program
))
1327 CHECK_STRING (program
);
1329 proc
= make_process (name
);
1330 /* If an error occurs and we can't start the process, we want to
1331 remove it from the process list. This means that each error
1332 check in create_process doesn't need to call remove_process
1333 itself; it's all taken care of here. */
1334 record_unwind_protect (start_process_unwind
, proc
);
1336 XPROCESS (proc
)->childp
= Qt
;
1337 XPROCESS (proc
)->plist
= Qnil
;
1338 XPROCESS (proc
)->type
= Qreal
;
1339 XPROCESS (proc
)->buffer
= buffer
;
1340 XPROCESS (proc
)->sentinel
= Qnil
;
1341 XPROCESS (proc
)->filter
= Qnil
;
1342 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1345 /* AKA GNUTLS_INITSTAGE(proc). */
1346 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1347 XPROCESS (proc
)->gnutls_cred_type
= Qnil
;
1350 #ifdef ADAPTIVE_READ_BUFFERING
1351 XPROCESS (proc
)->adaptive_read_buffering
1352 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1353 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1356 /* Make the process marker point into the process buffer (if any). */
1357 if (BUFFERP (buffer
))
1358 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1359 BUF_ZV (XBUFFER (buffer
)),
1360 BUF_ZV_BYTE (XBUFFER (buffer
)));
1363 /* Decide coding systems for communicating with the process. Here
1364 we don't setup the structure coding_system nor pay attention to
1365 unibyte mode. They are done in create_process. */
1367 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1368 Lisp_Object coding_systems
= Qt
;
1369 Lisp_Object val
, *args2
;
1370 struct gcpro gcpro1
, gcpro2
;
1372 val
= Vcoding_system_for_read
;
1375 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1376 args2
[0] = Qstart_process
;
1377 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1378 GCPRO2 (proc
, current_dir
);
1379 if (!NILP (program
))
1380 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1382 if (CONSP (coding_systems
))
1383 val
= XCAR (coding_systems
);
1384 else if (CONSP (Vdefault_process_coding_system
))
1385 val
= XCAR (Vdefault_process_coding_system
);
1387 XPROCESS (proc
)->decode_coding_system
= val
;
1389 val
= Vcoding_system_for_write
;
1392 if (EQ (coding_systems
, Qt
))
1394 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1395 args2
[0] = Qstart_process
;
1396 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1397 GCPRO2 (proc
, current_dir
);
1398 if (!NILP (program
))
1399 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1402 if (CONSP (coding_systems
))
1403 val
= XCDR (coding_systems
);
1404 else if (CONSP (Vdefault_process_coding_system
))
1405 val
= XCDR (Vdefault_process_coding_system
);
1407 XPROCESS (proc
)->encode_coding_system
= val
;
1408 /* Note: At this momemnt, the above coding system may leave
1409 text-conversion or eol-conversion unspecified. They will be
1410 decided after we read output from the process and decode it by
1411 some coding system, or just before we actually send a text to
1416 XPROCESS (proc
)->decoding_buf
= empty_unibyte_string
;
1417 XPROCESS (proc
)->decoding_carryover
= 0;
1418 XPROCESS (proc
)->encoding_buf
= empty_unibyte_string
;
1420 XPROCESS (proc
)->inherit_coding_system_flag
1421 = !(NILP (buffer
) || !inherit_process_coding_system
);
1423 if (!NILP (program
))
1425 /* If program file name is not absolute, search our path for it.
1426 Put the name we will really use in TEM. */
1427 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1428 && !(SCHARS (program
) > 1
1429 && IS_DEVICE_SEP (SREF (program
, 1))))
1431 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1434 GCPRO4 (name
, program
, buffer
, current_dir
);
1435 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1438 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1439 tem
= Fexpand_file_name (tem
, Qnil
);
1443 if (!NILP (Ffile_directory_p (program
)))
1444 error ("Specified program for new process is a directory");
1448 /* If program file name starts with /: for quoting a magic name,
1450 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1451 && SREF (tem
, 1) == ':')
1452 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1455 Lisp_Object arg_encoding
= Qnil
;
1456 struct gcpro gcpro1
;
1459 /* Encode the file name and put it in NEW_ARGV.
1460 That's where the child will use it to execute the program. */
1461 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1463 /* Here we encode arguments by the coding system used for sending
1464 data to the process. We don't support using different coding
1465 systems for encoding arguments and for encoding data sent to the
1468 for (i
= 3; i
< nargs
; i
++)
1470 tem
= Fcons (args
[i
], tem
);
1471 CHECK_STRING (XCAR (tem
));
1472 if (STRING_MULTIBYTE (XCAR (tem
)))
1474 if (NILP (arg_encoding
))
1475 arg_encoding
= (complement_process_encoding_system
1476 (XPROCESS (proc
)->encode_coding_system
));
1478 code_convert_string_norecord
1479 (XCAR (tem
), arg_encoding
, 1));
1486 /* Now that everything is encoded we can collect the strings into
1488 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1489 new_argv
[nargs
- 2] = 0;
1491 for (i
= nargs
- 2; i
-- != 0; )
1493 new_argv
[i
] = SDATA (XCAR (tem
));
1497 create_process (proc
, (char **) new_argv
, current_dir
);
1502 return unbind_to (count
, proc
);
1505 /* This function is the unwind_protect form for Fstart_process. If
1506 PROC doesn't have its pid set, then we know someone has signaled
1507 an error and the process wasn't started successfully, so we should
1508 remove it from the process list. */
1510 start_process_unwind (Lisp_Object proc
)
1512 if (!PROCESSP (proc
))
1515 /* Was PROC started successfully? */
1516 if (XPROCESS (proc
)->pid
== -1)
1517 remove_process (proc
);
1523 create_process_1 (struct atimer
*timer
)
1525 /* Nothing to do. */
1530 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1532 int inchannel
, outchannel
;
1535 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1536 int wait_child_setup
[2];
1540 struct sigaction sigint_action
;
1541 struct sigaction sigquit_action
;
1542 struct sigaction sigpipe_action
;
1544 struct sigaction sighup_action
;
1546 /* Use volatile to protect variables from being clobbered by longjmp. */
1547 volatile int forkin
, forkout
;
1548 volatile int pty_flag
= 0;
1550 extern char **environ
;
1553 inchannel
= outchannel
= -1;
1556 if (!NILP (Vprocess_connection_type
))
1557 outchannel
= inchannel
= allocate_pty ();
1561 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1562 /* On most USG systems it does not work to open the pty's tty here,
1563 then close it and reopen it in the child. */
1565 /* Don't let this terminal become our controlling terminal
1566 (in case we don't have one). */
1567 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1569 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1572 report_file_error ("Opening pty", Qnil
);
1574 forkin
= forkout
= -1;
1575 #endif /* not USG, or USG_SUBTTY_WORKS */
1579 #endif /* HAVE_PTYS */
1584 report_file_error ("Creating pipe", Qnil
);
1590 emacs_close (inchannel
);
1591 emacs_close (forkout
);
1592 report_file_error ("Creating pipe", Qnil
);
1598 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1602 tem
= pipe (wait_child_setup
);
1604 report_file_error ("Creating pipe", Qnil
);
1605 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1607 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1610 emacs_close (wait_child_setup
[0]);
1611 emacs_close (wait_child_setup
[1]);
1612 report_file_error ("Setting file descriptor flags", Qnil
);
1618 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1619 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1622 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1623 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1627 /* Record this as an active process, with its channels.
1628 As a result, child_setup will close Emacs's side of the pipes. */
1629 chan_process
[inchannel
] = process
;
1630 XPROCESS (process
)->infd
= inchannel
;
1631 XPROCESS (process
)->outfd
= outchannel
;
1633 /* Previously we recorded the tty descriptor used in the subprocess.
1634 It was only used for getting the foreground tty process, so now
1635 we just reopen the device (see emacs_get_tty_pgrp) as this is
1636 more portable (see USG_SUBTTY_WORKS above). */
1638 XPROCESS (process
)->pty_flag
= pty_flag
;
1639 XPROCESS (process
)->status
= Qrun
;
1641 /* Delay interrupts until we have a chance to store
1642 the new fork's pid in its process structure */
1643 sigemptyset (&blocked
);
1645 sigaddset (&blocked
, SIGCHLD
);
1647 #ifdef HAVE_WORKING_VFORK
1648 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1649 this sets the parent's signal handlers as well as the child's.
1650 So delay all interrupts whose handlers the child might munge,
1651 and record the current handlers so they can be restored later. */
1652 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1653 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1654 sigaddset (&blocked
, SIGPIPE
); sigaction (SIGPIPE
, 0, &sigpipe_action
);
1656 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1658 #endif /* HAVE_WORKING_VFORK */
1659 pthread_sigmask (SIG_BLOCK
, &blocked
, &procmask
);
1661 FD_SET (inchannel
, &input_wait_mask
);
1662 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1663 if (inchannel
> max_process_desc
)
1664 max_process_desc
= inchannel
;
1666 /* Until we store the proper pid, enable sigchld_handler
1667 to recognize an unknown pid as standing for this process.
1668 It is very important not to let this `marker' value stay
1669 in the table after this function has returned; if it does
1670 it might cause call-process to hang and subsequent asynchronous
1671 processes to get their return values scrambled. */
1672 XPROCESS (process
)->pid
= -1;
1674 /* This must be called after the above line because it may signal an
1676 setup_process_coding_systems (process
);
1681 /* child_setup must clobber environ on systems with true vfork.
1682 Protect it from permanent change. */
1683 char **save_environ
= environ
;
1684 volatile Lisp_Object encoded_current_dir
= ENCODE_FILE (current_dir
);
1689 #endif /* not WINDOWSNT */
1691 int xforkin
= forkin
;
1692 int xforkout
= forkout
;
1694 #if 0 /* This was probably a mistake--it duplicates code later on,
1695 but fails to handle all the cases. */
1696 /* Make sure SIGCHLD is not blocked in the child. */
1697 sigsetmask (SIGEMPTYMASK
);
1700 /* Make the pty be the controlling terminal of the process. */
1702 /* First, disconnect its current controlling terminal. */
1704 /* We tried doing setsid only if pty_flag, but it caused
1705 process_set_signal to fail on SGI when using a pipe. */
1707 /* Make the pty's terminal the controlling terminal. */
1708 if (pty_flag
&& xforkin
>= 0)
1711 /* We ignore the return value
1712 because faith@cs.unc.edu says that is necessary on Linux. */
1713 ioctl (xforkin
, TIOCSCTTY
, 0);
1716 #else /* not HAVE_SETSID */
1718 /* It's very important to call setpgrp here and no time
1719 afterwards. Otherwise, we lose our controlling tty which
1720 is set when we open the pty. */
1723 #endif /* not HAVE_SETSID */
1724 #if defined (LDISC1)
1725 if (pty_flag
&& xforkin
>= 0)
1728 tcgetattr (xforkin
, &t
);
1730 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1731 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1734 #if defined (NTTYDISC) && defined (TIOCSETD)
1735 if (pty_flag
&& xforkin
>= 0)
1737 /* Use new line discipline. */
1738 int ldisc
= NTTYDISC
;
1739 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1744 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1745 can do TIOCSPGRP only to the process's controlling tty. */
1748 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1749 I can't test it since I don't have 4.3. */
1750 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1753 ioctl (j
, TIOCNOTTY
, 0);
1757 /* In order to get a controlling terminal on some versions
1758 of BSD, it is necessary to put the process in pgrp 0
1759 before it opens the terminal. */
1767 #endif /* TIOCNOTTY */
1769 #if !defined (DONT_REOPEN_PTY)
1770 /*** There is a suggestion that this ought to be a
1771 conditional on TIOCSPGRP,
1772 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1773 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1774 that system does seem to need this code, even though
1775 both HAVE_SETSID and TIOCSCTTY are defined. */
1776 /* Now close the pty (if we had it open) and reopen it.
1777 This makes the pty the controlling terminal of the subprocess. */
1781 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1784 emacs_close (xforkin
);
1785 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1789 emacs_write (1, "Couldn't open the pty terminal ", 31);
1790 emacs_write (1, pty_name
, strlen (pty_name
));
1791 emacs_write (1, "\n", 1);
1796 #endif /* not DONT_REOPEN_PTY */
1798 #ifdef SETUP_SLAVE_PTY
1803 #endif /* SETUP_SLAVE_PTY */
1805 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1806 Now reenable it in the child, so it will die when we want it to. */
1808 signal (SIGHUP
, SIG_DFL
);
1810 #endif /* HAVE_PTYS */
1812 signal (SIGINT
, SIG_DFL
);
1813 signal (SIGQUIT
, SIG_DFL
);
1814 /* GConf causes us to ignore SIGPIPE, make sure it is restored
1816 signal (SIGPIPE
, SIG_DFL
);
1818 /* Stop blocking signals in the child. */
1819 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1822 child_setup_tty (xforkout
);
1824 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1825 new_argv
, 1, encoded_current_dir
);
1826 #else /* not WINDOWSNT */
1828 emacs_close (wait_child_setup
[0]);
1830 child_setup (xforkin
, xforkout
, xforkout
,
1831 new_argv
, 1, encoded_current_dir
);
1832 #endif /* not WINDOWSNT */
1834 environ
= save_environ
;
1839 /* This runs in the Emacs process. */
1843 emacs_close (forkin
);
1844 if (forkin
!= forkout
&& forkout
>= 0)
1845 emacs_close (forkout
);
1849 /* vfork succeeded. */
1850 XPROCESS (process
)->pid
= pid
;
1853 register_child (pid
, inchannel
);
1854 #endif /* WINDOWSNT */
1856 /* If the subfork execv fails, and it exits,
1857 this close hangs. I don't know why.
1858 So have an interrupt jar it loose. */
1860 struct atimer
*timer
;
1864 EMACS_SET_SECS_USECS (offset
, 1, 0);
1865 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
1868 emacs_close (forkin
);
1870 cancel_atimer (timer
);
1874 if (forkin
!= forkout
&& forkout
>= 0)
1875 emacs_close (forkout
);
1879 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1882 XPROCESS (process
)->tty_name
= Qnil
;
1884 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1885 /* Wait for child_setup to complete in case that vfork is
1886 actually defined as fork. The descriptor wait_child_setup[1]
1887 of a pipe is closed at the child side either by close-on-exec
1888 on successful execvp or the _exit call in child_setup. */
1892 emacs_close (wait_child_setup
[1]);
1893 emacs_read (wait_child_setup
[0], &dummy
, 1);
1894 emacs_close (wait_child_setup
[0]);
1899 /* Restore the signal state whether vfork succeeded or not.
1900 (We will signal an error, below, if it failed.) */
1901 #ifdef HAVE_WORKING_VFORK
1902 /* Restore the parent's signal handlers. */
1903 sigaction (SIGINT
, &sigint_action
, 0);
1904 sigaction (SIGQUIT
, &sigquit_action
, 0);
1905 sigaction (SIGPIPE
, &sigpipe_action
, 0);
1907 sigaction (SIGHUP
, &sighup_action
, 0);
1909 #endif /* HAVE_WORKING_VFORK */
1910 /* Stop blocking signals in the parent. */
1911 pthread_sigmask (SIG_SETMASK
, &procmask
, 0);
1913 /* Now generate the error if vfork failed. */
1915 report_file_error ("Doing vfork", Qnil
);
1919 create_pty (Lisp_Object process
)
1921 int inchannel
, outchannel
;
1924 inchannel
= outchannel
= -1;
1927 if (!NILP (Vprocess_connection_type
))
1928 outchannel
= inchannel
= allocate_pty ();
1932 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1933 /* On most USG systems it does not work to open the pty's tty here,
1934 then close it and reopen it in the child. */
1936 /* Don't let this terminal become our controlling terminal
1937 (in case we don't have one). */
1938 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1940 int forkout
= emacs_open (pty_name
, O_RDWR
, 0);
1943 report_file_error ("Opening pty", Qnil
);
1944 #if defined (DONT_REOPEN_PTY)
1945 /* In the case that vfork is defined as fork, the parent process
1946 (Emacs) may send some data before the child process completes
1947 tty options setup. So we setup tty before forking. */
1948 child_setup_tty (forkout
);
1949 #endif /* DONT_REOPEN_PTY */
1950 #endif /* not USG, or USG_SUBTTY_WORKS */
1953 #endif /* HAVE_PTYS */
1956 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1957 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1960 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1961 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1965 /* Record this as an active process, with its channels.
1966 As a result, child_setup will close Emacs's side of the pipes. */
1967 chan_process
[inchannel
] = process
;
1968 XPROCESS (process
)->infd
= inchannel
;
1969 XPROCESS (process
)->outfd
= outchannel
;
1971 /* Previously we recorded the tty descriptor used in the subprocess.
1972 It was only used for getting the foreground tty process, so now
1973 we just reopen the device (see emacs_get_tty_pgrp) as this is
1974 more portable (see USG_SUBTTY_WORKS above). */
1976 XPROCESS (process
)->pty_flag
= pty_flag
;
1977 XPROCESS (process
)->status
= Qrun
;
1978 setup_process_coding_systems (process
);
1980 FD_SET (inchannel
, &input_wait_mask
);
1981 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1982 if (inchannel
> max_process_desc
)
1983 max_process_desc
= inchannel
;
1985 XPROCESS (process
)->pid
= -2;
1988 XPROCESS (process
)->tty_name
= build_string (pty_name
);
1991 XPROCESS (process
)->tty_name
= Qnil
;
1995 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1996 The address family of sa is not included in the result. */
1999 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
2001 Lisp_Object address
;
2004 register struct Lisp_Vector
*p
;
2006 /* Workaround for a bug in getsockname on BSD: Names bound to
2007 sockets in the UNIX domain are inaccessible; getsockname returns
2008 a zero length name. */
2009 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2010 return empty_unibyte_string
;
2012 switch (sa
->sa_family
)
2016 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2017 len
= sizeof (sin
->sin_addr
) + 1;
2018 address
= Fmake_vector (make_number (len
), Qnil
);
2019 p
= XVECTOR (address
);
2020 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2021 cp
= (unsigned char *) &sin
->sin_addr
;
2027 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2028 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2029 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2030 address
= Fmake_vector (make_number (len
), Qnil
);
2031 p
= XVECTOR (address
);
2032 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2033 for (i
= 0; i
< len
; i
++)
2034 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2038 #ifdef HAVE_LOCAL_SOCKETS
2041 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2042 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2043 if (sockun
->sun_path
[i
] == 0)
2045 return make_unibyte_string (sockun
->sun_path
, i
);
2049 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2050 address
= Fcons (make_number (sa
->sa_family
),
2051 Fmake_vector (make_number (len
), Qnil
));
2052 p
= XVECTOR (XCDR (address
));
2053 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2059 p
->contents
[i
++] = make_number (*cp
++);
2065 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2068 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2070 register struct Lisp_Vector
*p
;
2072 if (VECTORP (address
))
2074 p
= XVECTOR (address
);
2075 if (p
->header
.size
== 5)
2078 return sizeof (struct sockaddr_in
);
2081 else if (p
->header
.size
== 9)
2083 *familyp
= AF_INET6
;
2084 return sizeof (struct sockaddr_in6
);
2088 #ifdef HAVE_LOCAL_SOCKETS
2089 else if (STRINGP (address
))
2091 *familyp
= AF_LOCAL
;
2092 return sizeof (struct sockaddr_un
);
2095 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2096 && VECTORP (XCDR (address
)))
2098 struct sockaddr
*sa
;
2099 *familyp
= XINT (XCAR (address
));
2100 p
= XVECTOR (XCDR (address
));
2101 return p
->header
.size
+ sizeof (sa
->sa_family
);
2106 /* Convert an address object (vector or string) to an internal sockaddr.
2108 The address format has been basically validated by
2109 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2110 it could have come from user data. So if FAMILY is not valid,
2111 we return after zeroing *SA. */
2114 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2116 register struct Lisp_Vector
*p
;
2117 register unsigned char *cp
= NULL
;
2121 memset (sa
, 0, len
);
2123 if (VECTORP (address
))
2125 p
= XVECTOR (address
);
2126 if (family
== AF_INET
)
2128 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2129 len
= sizeof (sin
->sin_addr
) + 1;
2130 hostport
= XINT (p
->contents
[--len
]);
2131 sin
->sin_port
= htons (hostport
);
2132 cp
= (unsigned char *)&sin
->sin_addr
;
2133 sa
->sa_family
= family
;
2136 else if (family
== AF_INET6
)
2138 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2139 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2140 len
= sizeof (sin6
->sin6_addr
) + 1;
2141 hostport
= XINT (p
->contents
[--len
]);
2142 sin6
->sin6_port
= htons (hostport
);
2143 for (i
= 0; i
< len
; i
++)
2144 if (INTEGERP (p
->contents
[i
]))
2146 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2149 sa
->sa_family
= family
;
2156 else if (STRINGP (address
))
2158 #ifdef HAVE_LOCAL_SOCKETS
2159 if (family
== AF_LOCAL
)
2161 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2162 cp
= SDATA (address
);
2163 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2164 sockun
->sun_path
[i
] = *cp
++;
2165 sa
->sa_family
= family
;
2172 p
= XVECTOR (XCDR (address
));
2173 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2176 for (i
= 0; i
< len
; i
++)
2177 if (INTEGERP (p
->contents
[i
]))
2178 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2181 #ifdef DATAGRAM_SOCKETS
2182 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2184 doc
: /* Get the current datagram address associated with PROCESS. */)
2185 (Lisp_Object process
)
2189 CHECK_PROCESS (process
);
2191 if (!DATAGRAM_CONN_P (process
))
2194 channel
= XPROCESS (process
)->infd
;
2195 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2196 datagram_address
[channel
].len
);
2199 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2201 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2202 Returns nil upon error setting address, ADDRESS otherwise. */)
2203 (Lisp_Object process
, Lisp_Object address
)
2208 CHECK_PROCESS (process
);
2210 if (!DATAGRAM_CONN_P (process
))
2213 channel
= XPROCESS (process
)->infd
;
2215 len
= get_lisp_to_sockaddr_size (address
, &family
);
2216 if (datagram_address
[channel
].len
!= len
)
2218 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2224 static const struct socket_options
{
2225 /* The name of this option. Should be lowercase version of option
2226 name without SO_ prefix. */
2228 /* Option level SOL_... */
2230 /* Option number SO_... */
2232 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2233 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2234 } socket_options
[] =
2236 #ifdef SO_BINDTODEVICE
2237 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2240 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2243 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2246 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2249 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2252 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2255 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2258 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2260 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2263 /* Set option OPT to value VAL on socket S.
2265 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2266 Signals an error if setting a known option fails.
2270 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2273 const struct socket_options
*sopt
;
2278 name
= SSDATA (SYMBOL_NAME (opt
));
2279 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2280 if (strcmp (name
, sopt
->name
) == 0)
2283 switch (sopt
->opttype
)
2288 optval
= NILP (val
) ? 0 : 1;
2289 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2290 &optval
, sizeof (optval
));
2297 if (TYPE_RANGED_INTEGERP (int, val
))
2298 optval
= XINT (val
);
2300 error ("Bad option value for %s", name
);
2301 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2302 &optval
, sizeof (optval
));
2306 #ifdef SO_BINDTODEVICE
2309 char devname
[IFNAMSIZ
+1];
2311 /* This is broken, at least in the Linux 2.4 kernel.
2312 To unbind, the arg must be a zero integer, not the empty string.
2313 This should work on all systems. KFS. 2003-09-23. */
2314 memset (devname
, 0, sizeof devname
);
2317 char *arg
= SSDATA (val
);
2318 int len
= min (strlen (arg
), IFNAMSIZ
);
2319 memcpy (devname
, arg
, len
);
2321 else if (!NILP (val
))
2322 error ("Bad option value for %s", name
);
2323 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2332 struct linger linger
;
2335 linger
.l_linger
= 0;
2336 if (TYPE_RANGED_INTEGERP (int, val
))
2337 linger
.l_linger
= XINT (val
);
2339 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2340 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2341 &linger
, sizeof (linger
));
2351 report_file_error ("Cannot set network option",
2352 Fcons (opt
, Fcons (val
, Qnil
)));
2353 return (1 << sopt
->optbit
);
2357 DEFUN ("set-network-process-option",
2358 Fset_network_process_option
, Sset_network_process_option
,
2360 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2361 See `make-network-process' for a list of options and values.
2362 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2363 OPTION is not a supported option, return nil instead; otherwise return t. */)
2364 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2367 struct Lisp_Process
*p
;
2369 CHECK_PROCESS (process
);
2370 p
= XPROCESS (process
);
2371 if (!NETCONN1_P (p
))
2372 error ("Process is not a network process");
2376 error ("Process is not running");
2378 if (set_socket_option (s
, option
, value
))
2380 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2384 if (NILP (no_error
))
2385 error ("Unknown or unsupported option");
2391 DEFUN ("serial-process-configure",
2392 Fserial_process_configure
,
2393 Sserial_process_configure
,
2395 doc
: /* Configure speed, bytesize, etc. of a serial process.
2397 Arguments are specified as keyword/argument pairs. Attributes that
2398 are not given are re-initialized from the process's current
2399 configuration (available via the function `process-contact') or set to
2400 reasonable default values. The following arguments are defined:
2406 -- Any of these arguments can be given to identify the process that is
2407 to be configured. If none of these arguments is given, the current
2408 buffer's process is used.
2410 :speed SPEED -- SPEED is the speed of the serial port in bits per
2411 second, also called baud rate. Any value can be given for SPEED, but
2412 most serial ports work only at a few defined values between 1200 and
2413 115200, with 9600 being the most common value. If SPEED is nil, the
2414 serial port is not configured any further, i.e., all other arguments
2415 are ignored. This may be useful for special serial ports such as
2416 Bluetooth-to-serial converters which can only be configured through AT
2417 commands. A value of nil for SPEED can be used only when passed
2418 through `make-serial-process' or `serial-term'.
2420 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2421 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2423 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2424 `odd' (use odd parity), or the symbol `even' (use even parity). If
2425 PARITY is not given, no parity is used.
2427 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2428 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2429 is not given or nil, 1 stopbit is used.
2431 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2432 flowcontrol to be used, which is either nil (don't use flowcontrol),
2433 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2434 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2435 flowcontrol is used.
2437 `serial-process-configure' is called by `make-serial-process' for the
2438 initial configuration of the serial port.
2442 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2444 \(serial-process-configure
2445 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2447 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2449 usage: (serial-process-configure &rest ARGS) */)
2450 (ptrdiff_t nargs
, Lisp_Object
*args
)
2452 struct Lisp_Process
*p
;
2453 Lisp_Object contact
= Qnil
;
2454 Lisp_Object proc
= Qnil
;
2455 struct gcpro gcpro1
;
2457 contact
= Flist (nargs
, args
);
2460 proc
= Fplist_get (contact
, QCprocess
);
2462 proc
= Fplist_get (contact
, QCname
);
2464 proc
= Fplist_get (contact
, QCbuffer
);
2466 proc
= Fplist_get (contact
, QCport
);
2467 proc
= get_process (proc
);
2468 p
= XPROCESS (proc
);
2469 if (!EQ (p
->type
, Qserial
))
2470 error ("Not a serial process");
2472 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2478 serial_configure (p
, contact
);
2484 /* Used by make-serial-process to recover from errors. */
2486 make_serial_process_unwind (Lisp_Object proc
)
2488 if (!PROCESSP (proc
))
2490 remove_process (proc
);
2494 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2496 doc
: /* Create and return a serial port process.
2498 In Emacs, serial port connections are represented by process objects,
2499 so input and output work as for subprocesses, and `delete-process'
2500 closes a serial port connection. However, a serial process has no
2501 process id, it cannot be signaled, and the status codes are different
2502 from normal processes.
2504 `make-serial-process' creates a process and a buffer, on which you
2505 probably want to use `process-send-string'. Try \\[serial-term] for
2506 an interactive terminal. See below for examples.
2508 Arguments are specified as keyword/argument pairs. The following
2509 arguments are defined:
2511 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2512 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2513 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2514 the backslashes in strings).
2516 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2517 which is called by `make-serial-process'.
2519 :name NAME -- NAME is the name of the process. If NAME is not given,
2520 the value of PORT is used.
2522 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2523 with the process. Process output goes at the end of that buffer,
2524 unless you specify an output stream or filter function to handle the
2525 output. If BUFFER is not given, the value of NAME is used.
2527 :coding CODING -- If CODING is a symbol, it specifies the coding
2528 system used for both reading and writing for this process. If CODING
2529 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2530 ENCODING is used for writing.
2532 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2533 the process is running. If BOOL is not given, query before exiting.
2535 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2536 In the stopped state, a serial process does not accept incoming data,
2537 but you can send outgoing data. The stopped state is cleared by
2538 `continue-process' and set by `stop-process'.
2540 :filter FILTER -- Install FILTER as the process filter.
2542 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2544 :plist PLIST -- Install PLIST as the initial plist of the process.
2551 -- These arguments are handled by `serial-process-configure', which is
2552 called by `make-serial-process'.
2554 The original argument list, possibly modified by later configuration,
2555 is available via the function `process-contact'.
2559 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2561 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2563 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2565 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2567 usage: (make-serial-process &rest ARGS) */)
2568 (ptrdiff_t nargs
, Lisp_Object
*args
)
2571 Lisp_Object proc
, contact
, port
;
2572 struct Lisp_Process
*p
;
2573 struct gcpro gcpro1
;
2574 Lisp_Object name
, buffer
;
2575 Lisp_Object tem
, val
;
2576 ptrdiff_t specpdl_count
= -1;
2581 contact
= Flist (nargs
, args
);
2584 port
= Fplist_get (contact
, QCport
);
2586 error ("No port specified");
2587 CHECK_STRING (port
);
2589 if (NILP (Fplist_member (contact
, QCspeed
)))
2590 error (":speed not specified");
2591 if (!NILP (Fplist_get (contact
, QCspeed
)))
2592 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2594 name
= Fplist_get (contact
, QCname
);
2597 CHECK_STRING (name
);
2598 proc
= make_process (name
);
2599 specpdl_count
= SPECPDL_INDEX ();
2600 record_unwind_protect (make_serial_process_unwind
, proc
);
2601 p
= XPROCESS (proc
);
2603 fd
= serial_open (SSDATA (port
));
2606 if (fd
> max_process_desc
)
2607 max_process_desc
= fd
;
2608 chan_process
[fd
] = proc
;
2610 buffer
= Fplist_get (contact
, QCbuffer
);
2613 buffer
= Fget_buffer_create (buffer
);
2616 p
->childp
= contact
;
2617 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2619 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2620 p
->filter
= Fplist_get (contact
, QCfilter
);
2622 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2623 p
->kill_without_query
= 1;
2624 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2628 if (!EQ (p
->command
, Qt
))
2630 FD_SET (fd
, &input_wait_mask
);
2631 FD_SET (fd
, &non_keyboard_wait_mask
);
2634 if (BUFFERP (buffer
))
2636 set_marker_both (p
->mark
, buffer
,
2637 BUF_ZV (XBUFFER (buffer
)),
2638 BUF_ZV_BYTE (XBUFFER (buffer
)));
2641 tem
= Fplist_member (contact
, QCcoding
);
2642 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2648 val
= XCAR (XCDR (tem
));
2652 else if (!NILP (Vcoding_system_for_read
))
2653 val
= Vcoding_system_for_read
;
2654 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2655 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2657 p
->decode_coding_system
= val
;
2662 val
= XCAR (XCDR (tem
));
2666 else if (!NILP (Vcoding_system_for_write
))
2667 val
= Vcoding_system_for_write
;
2668 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2669 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2671 p
->encode_coding_system
= val
;
2673 setup_process_coding_systems (proc
);
2674 p
->decoding_buf
= empty_unibyte_string
;
2675 p
->decoding_carryover
= 0;
2676 p
->encoding_buf
= empty_unibyte_string
;
2677 p
->inherit_coding_system_flag
2678 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2680 Fserial_process_configure (nargs
, args
);
2682 specpdl_ptr
= specpdl
+ specpdl_count
;
2688 /* Create a network stream/datagram client/server process. Treated
2689 exactly like a normal process when reading and writing. Primary
2690 differences are in status display and process deletion. A network
2691 connection has no PID; you cannot signal it. All you can do is
2692 stop/continue it and deactivate/close it via delete-process */
2694 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2696 doc
: /* Create and return a network server or client process.
2698 In Emacs, network connections are represented by process objects, so
2699 input and output work as for subprocesses and `delete-process' closes
2700 a network connection. However, a network process has no process id,
2701 it cannot be signaled, and the status codes are different from normal
2704 Arguments are specified as keyword/argument pairs. The following
2705 arguments are defined:
2707 :name NAME -- NAME is name for process. It is modified if necessary
2710 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2711 with the process. Process output goes at end of that buffer, unless
2712 you specify an output stream or filter function to handle the output.
2713 BUFFER may be also nil, meaning that this process is not associated
2716 :host HOST -- HOST is name of the host to connect to, or its IP
2717 address. The symbol `local' specifies the local host. If specified
2718 for a server process, it must be a valid name or address for the local
2719 host, and only clients connecting to that address will be accepted.
2721 :service SERVICE -- SERVICE is name of the service desired, or an
2722 integer specifying a port number to connect to. If SERVICE is t,
2723 a random port number is selected for the server. (If Emacs was
2724 compiled with getaddrinfo, a port number can also be specified as a
2725 string, e.g. "80", as well as an integer. This is not portable.)
2727 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2728 stream type connection, `datagram' creates a datagram type connection,
2729 `seqpacket' creates a reliable datagram 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) */)
2846 (ptrdiff_t nargs
, Lisp_Object
*args
)
2849 Lisp_Object contact
;
2850 struct Lisp_Process
*p
;
2851 #ifdef HAVE_GETADDRINFO
2852 struct addrinfo ai
, *res
, *lres
;
2853 struct addrinfo hints
;
2854 const char *portstring
;
2856 #else /* HAVE_GETADDRINFO */
2857 struct _emacs_addrinfo
2863 struct sockaddr
*ai_addr
;
2864 struct _emacs_addrinfo
*ai_next
;
2866 #endif /* HAVE_GETADDRINFO */
2867 struct sockaddr_in address_in
;
2868 #ifdef HAVE_LOCAL_SOCKETS
2869 struct sockaddr_un address_un
;
2874 int s
= -1, outch
, inch
;
2875 struct gcpro gcpro1
;
2876 ptrdiff_t count
= SPECPDL_INDEX ();
2878 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2880 Lisp_Object name
, buffer
, host
, service
, address
;
2881 Lisp_Object filter
, sentinel
;
2882 int is_non_blocking_client
= 0;
2883 int is_server
= 0, backlog
= 5;
2890 /* Save arguments for process-contact and clone-process. */
2891 contact
= Flist (nargs
, args
);
2895 /* Ensure socket support is loaded if available. */
2896 init_winsock (TRUE
);
2899 /* :type TYPE (nil: stream, datagram */
2900 tem
= Fplist_get (contact
, QCtype
);
2902 socktype
= SOCK_STREAM
;
2903 #ifdef DATAGRAM_SOCKETS
2904 else if (EQ (tem
, Qdatagram
))
2905 socktype
= SOCK_DGRAM
;
2907 #ifdef HAVE_SEQPACKET
2908 else if (EQ (tem
, Qseqpacket
))
2909 socktype
= SOCK_SEQPACKET
;
2912 error ("Unsupported connection type");
2915 tem
= Fplist_get (contact
, QCserver
);
2918 /* Don't support network sockets when non-blocking mode is
2919 not available, since a blocked Emacs is not useful. */
2920 #if !defined (O_NONBLOCK) && !defined (O_NDELAY)
2921 error ("Network servers not supported");
2924 if (TYPE_RANGED_INTEGERP (int, tem
))
2925 backlog
= XINT (tem
);
2929 /* Make QCaddress an alias for :local (server) or :remote (client). */
2930 QCaddress
= is_server
? QClocal
: QCremote
;
2933 if (!is_server
&& socktype
!= SOCK_DGRAM
2934 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2936 #ifndef NON_BLOCKING_CONNECT
2937 error ("Non-blocking connect not supported");
2939 is_non_blocking_client
= 1;
2943 name
= Fplist_get (contact
, QCname
);
2944 buffer
= Fplist_get (contact
, QCbuffer
);
2945 filter
= Fplist_get (contact
, QCfilter
);
2946 sentinel
= Fplist_get (contact
, QCsentinel
);
2948 CHECK_STRING (name
);
2950 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2951 ai
.ai_socktype
= socktype
;
2956 /* :local ADDRESS or :remote ADDRESS */
2957 address
= Fplist_get (contact
, QCaddress
);
2958 if (!NILP (address
))
2960 host
= service
= Qnil
;
2962 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2963 error ("Malformed :address");
2964 ai
.ai_family
= family
;
2965 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2966 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2970 /* :family FAMILY -- nil (for Inet), local, or integer. */
2971 tem
= Fplist_get (contact
, QCfamily
);
2974 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2980 #ifdef HAVE_LOCAL_SOCKETS
2981 else if (EQ (tem
, Qlocal
))
2985 else if (EQ (tem
, Qipv6
))
2988 else if (EQ (tem
, Qipv4
))
2990 else if (TYPE_RANGED_INTEGERP (int, tem
))
2991 family
= XINT (tem
);
2993 error ("Unknown address family");
2995 ai
.ai_family
= family
;
2997 /* :service SERVICE -- string, integer (port number), or t (random port). */
2998 service
= Fplist_get (contact
, QCservice
);
3000 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3001 host
= Fplist_get (contact
, QChost
);
3004 if (EQ (host
, Qlocal
))
3005 /* Depending on setup, "localhost" may map to different IPv4 and/or
3006 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
3007 host
= build_string ("127.0.0.1");
3008 CHECK_STRING (host
);
3011 #ifdef HAVE_LOCAL_SOCKETS
3012 if (family
== AF_LOCAL
)
3016 message (":family local ignores the :host \"%s\" property",
3018 contact
= Fplist_put (contact
, QChost
, Qnil
);
3021 CHECK_STRING (service
);
3022 memset (&address_un
, 0, sizeof address_un
);
3023 address_un
.sun_family
= AF_LOCAL
;
3024 strncpy (address_un
.sun_path
, SSDATA (service
), sizeof address_un
.sun_path
);
3025 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3026 ai
.ai_addrlen
= sizeof address_un
;
3031 /* Slow down polling to every ten seconds.
3032 Some kernels have a bug which causes retrying connect to fail
3033 after a connect. Polling can interfere with gethostbyname too. */
3034 #ifdef POLL_FOR_INPUT
3035 if (socktype
!= SOCK_DGRAM
)
3037 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3038 bind_polling_period (10);
3042 #ifdef HAVE_GETADDRINFO
3043 /* If we have a host, use getaddrinfo to resolve both host and service.
3044 Otherwise, use getservbyname to lookup the service. */
3048 /* SERVICE can either be a string or int.
3049 Convert to a C string for later use by getaddrinfo. */
3050 if (EQ (service
, Qt
))
3052 else if (INTEGERP (service
))
3054 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3055 portstring
= portbuf
;
3059 CHECK_STRING (service
);
3060 portstring
= SSDATA (service
);
3065 memset (&hints
, 0, sizeof (hints
));
3067 hints
.ai_family
= family
;
3068 hints
.ai_socktype
= socktype
;
3069 hints
.ai_protocol
= 0;
3071 #ifdef HAVE_RES_INIT
3075 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3077 #ifdef HAVE_GAI_STRERROR
3078 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3080 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3086 #endif /* HAVE_GETADDRINFO */
3088 /* We end up here if getaddrinfo is not defined, or in case no hostname
3089 has been specified (e.g. for a local server process). */
3091 if (EQ (service
, Qt
))
3093 else if (INTEGERP (service
))
3094 port
= htons ((unsigned short) XINT (service
));
3097 struct servent
*svc_info
;
3098 CHECK_STRING (service
);
3099 svc_info
= getservbyname (SSDATA (service
),
3100 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3102 error ("Unknown service: %s", SDATA (service
));
3103 port
= svc_info
->s_port
;
3106 memset (&address_in
, 0, sizeof address_in
);
3107 address_in
.sin_family
= family
;
3108 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3109 address_in
.sin_port
= port
;
3111 #ifndef HAVE_GETADDRINFO
3114 struct hostent
*host_info_ptr
;
3116 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3117 as it may `hang' Emacs for a very long time. */
3121 #ifdef HAVE_RES_INIT
3125 host_info_ptr
= gethostbyname (SDATA (host
));
3130 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3131 host_info_ptr
->h_length
);
3132 family
= host_info_ptr
->h_addrtype
;
3133 address_in
.sin_family
= family
;
3136 /* Attempt to interpret host as numeric inet address */
3138 unsigned long numeric_addr
;
3139 numeric_addr
= inet_addr (SSDATA (host
));
3140 if (numeric_addr
== -1)
3141 error ("Unknown host \"%s\"", SDATA (host
));
3143 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3144 sizeof (address_in
.sin_addr
));
3148 #endif /* not HAVE_GETADDRINFO */
3150 ai
.ai_family
= family
;
3151 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3152 ai
.ai_addrlen
= sizeof address_in
;
3156 /* Do this in case we never enter the for-loop below. */
3157 count1
= SPECPDL_INDEX ();
3160 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3169 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3176 #ifdef DATAGRAM_SOCKETS
3177 if (!is_server
&& socktype
== SOCK_DGRAM
)
3179 #endif /* DATAGRAM_SOCKETS */
3181 #ifdef NON_BLOCKING_CONNECT
3182 if (is_non_blocking_client
)
3185 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3187 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3199 /* Make us close S if quit. */
3200 record_unwind_protect (close_file_unwind
, make_number (s
));
3202 /* Parse network options in the arg list.
3203 We simply ignore anything which isn't a known option (including other keywords).
3204 An error is signaled if setting a known option fails. */
3205 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3206 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3210 /* Configure as a server socket. */
3212 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3213 explicit :reuseaddr key to override this. */
3214 #ifdef HAVE_LOCAL_SOCKETS
3215 if (family
!= AF_LOCAL
)
3217 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3220 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3221 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3224 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3225 report_file_error ("Cannot bind server socket", Qnil
);
3227 #ifdef HAVE_GETSOCKNAME
3228 if (EQ (service
, Qt
))
3230 struct sockaddr_in sa1
;
3231 socklen_t len1
= sizeof (sa1
);
3232 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3234 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3235 service
= make_number (ntohs (sa1
.sin_port
));
3236 contact
= Fplist_put (contact
, QCservice
, service
);
3241 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3242 report_file_error ("Cannot listen on server socket", Qnil
);
3250 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3253 if (ret
== 0 || xerrno
== EISCONN
)
3255 /* The unwind-protect will be discarded afterwards.
3256 Likewise for immediate_quit. */
3260 #ifdef NON_BLOCKING_CONNECT
3262 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3266 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3273 if (xerrno
== EINTR
)
3275 /* Unlike most other syscalls connect() cannot be called
3276 again. (That would return EALREADY.) The proper way to
3277 wait for completion is select(). */
3285 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3292 report_file_error ("select failed", Qnil
);
3296 len
= sizeof xerrno
;
3297 eassert (FD_ISSET (s
, &fdset
));
3298 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3299 report_file_error ("getsockopt failed", Qnil
);
3301 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3305 #endif /* !WINDOWSNT */
3309 /* Discard the unwind protect closing S. */
3310 specpdl_ptr
= specpdl
+ count1
;
3315 if (xerrno
== EINTR
)
3322 #ifdef DATAGRAM_SOCKETS
3323 if (socktype
== SOCK_DGRAM
)
3325 if (datagram_address
[s
].sa
)
3327 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3328 datagram_address
[s
].len
= lres
->ai_addrlen
;
3332 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3333 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3336 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3337 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3338 conv_lisp_to_sockaddr (rfamily
, remote
,
3339 datagram_address
[s
].sa
, rlen
);
3343 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3346 contact
= Fplist_put (contact
, QCaddress
,
3347 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3348 #ifdef HAVE_GETSOCKNAME
3351 struct sockaddr_in sa1
;
3352 socklen_t len1
= sizeof (sa1
);
3353 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3354 contact
= Fplist_put (contact
, QClocal
,
3355 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3362 #ifdef HAVE_GETADDRINFO
3371 /* Discard the unwind protect for closing S, if any. */
3372 specpdl_ptr
= specpdl
+ count1
;
3374 /* Unwind bind_polling_period and request_sigio. */
3375 unbind_to (count
, Qnil
);
3379 /* If non-blocking got this far - and failed - assume non-blocking is
3380 not supported after all. This is probably a wrong assumption, but
3381 the normal blocking calls to open-network-stream handles this error
3383 if (is_non_blocking_client
)
3388 report_file_error ("make server process failed", contact
);
3390 report_file_error ("make client process failed", contact
);
3397 buffer
= Fget_buffer_create (buffer
);
3398 proc
= make_process (name
);
3400 chan_process
[inch
] = proc
;
3403 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3406 fcntl (inch
, F_SETFL
, O_NDELAY
);
3410 p
= XPROCESS (proc
);
3412 p
->childp
= contact
;
3413 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3417 p
->sentinel
= sentinel
;
3419 p
->log
= Fplist_get (contact
, QClog
);
3420 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3421 p
->kill_without_query
= 1;
3422 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3427 if (is_server
&& socktype
!= SOCK_DGRAM
)
3428 p
->status
= Qlisten
;
3430 /* Make the process marker point into the process buffer (if any). */
3431 if (BUFFERP (buffer
))
3432 set_marker_both (p
->mark
, buffer
,
3433 BUF_ZV (XBUFFER (buffer
)),
3434 BUF_ZV_BYTE (XBUFFER (buffer
)));
3436 #ifdef NON_BLOCKING_CONNECT
3437 if (is_non_blocking_client
)
3439 /* We may get here if connect did succeed immediately. However,
3440 in that case, we still need to signal this like a non-blocking
3442 p
->status
= Qconnect
;
3443 if (!FD_ISSET (inch
, &connect_wait_mask
))
3445 FD_SET (inch
, &connect_wait_mask
);
3446 FD_SET (inch
, &write_mask
);
3447 num_pending_connects
++;
3452 /* A server may have a client filter setting of Qt, but it must
3453 still listen for incoming connects unless it is stopped. */
3454 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3455 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3457 FD_SET (inch
, &input_wait_mask
);
3458 FD_SET (inch
, &non_keyboard_wait_mask
);
3461 if (inch
> max_process_desc
)
3462 max_process_desc
= inch
;
3464 tem
= Fplist_member (contact
, QCcoding
);
3465 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3466 tem
= Qnil
; /* No error message (too late!). */
3469 /* Setup coding systems for communicating with the network stream. */
3470 struct gcpro inner_gcpro1
;
3471 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3472 Lisp_Object coding_systems
= Qt
;
3473 Lisp_Object fargs
[5], val
;
3477 val
= XCAR (XCDR (tem
));
3481 else if (!NILP (Vcoding_system_for_read
))
3482 val
= Vcoding_system_for_read
;
3483 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3484 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3485 /* We dare not decode end-of-line format by setting VAL to
3486 Qraw_text, because the existing Emacs Lisp libraries
3487 assume that they receive bare code including a sequene of
3492 if (NILP (host
) || NILP (service
))
3493 coding_systems
= Qnil
;
3496 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3497 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3498 GCPRO1_VAR (proc
, inner_gcpro
);
3499 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3500 UNGCPRO_VAR (inner_gcpro
);
3502 if (CONSP (coding_systems
))
3503 val
= XCAR (coding_systems
);
3504 else if (CONSP (Vdefault_process_coding_system
))
3505 val
= XCAR (Vdefault_process_coding_system
);
3509 p
->decode_coding_system
= val
;
3513 val
= XCAR (XCDR (tem
));
3517 else if (!NILP (Vcoding_system_for_write
))
3518 val
= Vcoding_system_for_write
;
3519 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3523 if (EQ (coding_systems
, Qt
))
3525 if (NILP (host
) || NILP (service
))
3526 coding_systems
= Qnil
;
3529 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3530 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3531 GCPRO1_VAR (proc
, inner_gcpro
);
3532 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3533 UNGCPRO_VAR (inner_gcpro
);
3536 if (CONSP (coding_systems
))
3537 val
= XCDR (coding_systems
);
3538 else if (CONSP (Vdefault_process_coding_system
))
3539 val
= XCDR (Vdefault_process_coding_system
);
3543 p
->encode_coding_system
= val
;
3545 setup_process_coding_systems (proc
);
3547 p
->decoding_buf
= empty_unibyte_string
;
3548 p
->decoding_carryover
= 0;
3549 p
->encoding_buf
= empty_unibyte_string
;
3551 p
->inherit_coding_system_flag
3552 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3559 #if defined (HAVE_NET_IF_H)
3562 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3563 doc
: /* Return an alist of all network interfaces and their network address.
3564 Each element is a cons, the car of which is a string containing the
3565 interface name, and the cdr is the network address in internal
3566 format; see the description of ADDRESS in `make-network-process'. */)
3569 struct ifconf ifconf
;
3570 struct ifreq
*ifreq
;
3572 ptrdiff_t buf_size
= 512;
3576 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3582 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3583 ifconf
.ifc_buf
= buf
;
3584 ifconf
.ifc_len
= buf_size
;
3585 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3592 while (ifconf
.ifc_len
== buf_size
);
3597 ifreq
= ifconf
.ifc_req
;
3598 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3600 struct ifreq
*ifq
= ifreq
;
3601 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3602 #define SIZEOF_IFREQ(sif) \
3603 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3604 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3606 int len
= SIZEOF_IFREQ (ifq
);
3608 int len
= sizeof (*ifreq
);
3610 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3612 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
3614 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3617 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3618 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3619 res
= Fcons (Fcons (build_string (namebuf
),
3620 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3621 sizeof (struct sockaddr
))),
3628 #endif /* SIOCGIFCONF */
3630 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
3634 const char *flag_sym
;
3637 static const struct ifflag_def ifflag_table
[] = {
3641 #ifdef IFF_BROADCAST
3642 { IFF_BROADCAST
, "broadcast" },
3645 { IFF_DEBUG
, "debug" },
3648 { IFF_LOOPBACK
, "loopback" },
3650 #ifdef IFF_POINTOPOINT
3651 { IFF_POINTOPOINT
, "pointopoint" },
3654 { IFF_RUNNING
, "running" },
3657 { IFF_NOARP
, "noarp" },
3660 { IFF_PROMISC
, "promisc" },
3662 #ifdef IFF_NOTRAILERS
3663 #ifdef NS_IMPL_COCOA
3664 /* Really means smart, notrailers is obsolete */
3665 { IFF_NOTRAILERS
, "smart" },
3667 { IFF_NOTRAILERS
, "notrailers" },
3671 { IFF_ALLMULTI
, "allmulti" },
3674 { IFF_MASTER
, "master" },
3677 { IFF_SLAVE
, "slave" },
3679 #ifdef IFF_MULTICAST
3680 { IFF_MULTICAST
, "multicast" },
3683 { IFF_PORTSEL
, "portsel" },
3685 #ifdef IFF_AUTOMEDIA
3686 { IFF_AUTOMEDIA
, "automedia" },
3689 { IFF_DYNAMIC
, "dynamic" },
3692 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3695 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3698 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3701 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3704 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3709 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3710 doc
: /* Return information about network interface named IFNAME.
3711 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3712 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3713 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3714 FLAGS is the current flags of the interface. */)
3715 (Lisp_Object ifname
)
3718 Lisp_Object res
= Qnil
;
3722 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3723 && defined HAVE_GETIFADDRS && defined LLADDR)
3724 struct ifaddrs
*ifap
;
3727 CHECK_STRING (ifname
);
3729 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3730 strncpy (rq
.ifr_name
, SSDATA (ifname
), sizeof (rq
.ifr_name
));
3732 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3737 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3738 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3740 int flags
= rq
.ifr_flags
;
3741 const struct ifflag_def
*fp
;
3744 /* If flags is smaller than int (i.e. short) it may have the high bit set
3745 due to IFF_MULTICAST. In that case, sign extending it into
3747 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3748 flags
= (unsigned short) rq
.ifr_flags
;
3751 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3753 if (flags
& fp
->flag_bit
)
3755 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3756 flags
-= fp
->flag_bit
;
3759 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3763 elt
= Fcons (make_number (fnum
), elt
);
3768 res
= Fcons (elt
, res
);
3771 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3772 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3774 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3775 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3779 for (n
= 0; n
< 6; n
++)
3780 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3781 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3783 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3784 if (getifaddrs (&ifap
) != -1)
3786 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3787 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3790 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3792 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3793 unsigned char linkaddr
[6];
3796 if (it
->ifa_addr
->sa_family
!= AF_LINK
3797 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3798 || sdl
->sdl_alen
!= 6)
3801 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3802 for (n
= 0; n
< 6; n
++)
3803 p
->contents
[n
] = make_number (linkaddr
[n
]);
3805 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3809 #ifdef HAVE_FREEIFADDRS
3813 #endif /* HAVE_GETIFADDRS && LLADDR */
3815 res
= Fcons (elt
, res
);
3818 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3819 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3822 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3823 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3825 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3829 res
= Fcons (elt
, res
);
3832 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3833 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3836 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3839 res
= Fcons (elt
, res
);
3842 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3843 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3846 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3849 res
= Fcons (elt
, res
);
3853 return any
? res
: Qnil
;
3856 #endif /* defined (HAVE_NET_IF_H) */
3858 /* Turn off input and output for process PROC. */
3861 deactivate_process (Lisp_Object proc
)
3863 register int inchannel
, outchannel
;
3864 register struct Lisp_Process
*p
= XPROCESS (proc
);
3866 inchannel
= p
->infd
;
3867 outchannel
= p
->outfd
;
3869 #ifdef ADAPTIVE_READ_BUFFERING
3870 if (p
->read_output_delay
> 0)
3872 if (--process_output_delay_count
< 0)
3873 process_output_delay_count
= 0;
3874 p
->read_output_delay
= 0;
3875 p
->read_output_skip
= 0;
3881 /* Beware SIGCHLD hereabouts. */
3882 flush_pending_output (inchannel
);
3883 emacs_close (inchannel
);
3884 if (outchannel
>= 0 && outchannel
!= inchannel
)
3885 emacs_close (outchannel
);
3889 #ifdef DATAGRAM_SOCKETS
3890 if (DATAGRAM_CHAN_P (inchannel
))
3892 xfree (datagram_address
[inchannel
].sa
);
3893 datagram_address
[inchannel
].sa
= 0;
3894 datagram_address
[inchannel
].len
= 0;
3897 chan_process
[inchannel
] = Qnil
;
3898 FD_CLR (inchannel
, &input_wait_mask
);
3899 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3900 #ifdef NON_BLOCKING_CONNECT
3901 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3903 FD_CLR (inchannel
, &connect_wait_mask
);
3904 FD_CLR (inchannel
, &write_mask
);
3905 if (--num_pending_connects
< 0)
3909 if (inchannel
== max_process_desc
)
3912 /* We just closed the highest-numbered process input descriptor,
3913 so recompute the highest-numbered one now. */
3914 max_process_desc
= 0;
3915 for (i
= 0; i
< MAXDESC
; i
++)
3916 if (!NILP (chan_process
[i
]))
3917 max_process_desc
= i
;
3923 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3925 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3926 It is read into the process' buffers or given to their filter functions.
3927 Non-nil arg PROCESS means do not return until some output has been received
3930 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3931 and milliseconds to wait; return after that much time whether or not
3932 there is any subprocess output. If SECONDS is a floating point number,
3933 it specifies a fractional number of seconds to wait.
3934 The MILLISEC argument is obsolete and should be avoided.
3936 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3937 from PROCESS, suspending reading output from other processes.
3938 If JUST-THIS-ONE is an integer, don't run any timers either.
3939 Return non-nil if we received any output before the timeout expired. */)
3940 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3942 int secs
= -1, usecs
= 0;
3944 if (! NILP (process
))
3945 CHECK_PROCESS (process
);
3947 just_this_one
= Qnil
;
3949 if (!NILP (millisec
))
3950 { /* Obsolete calling convention using integers rather than floats. */
3951 CHECK_NUMBER (millisec
);
3953 seconds
= make_float (XINT (millisec
) / 1000.0);
3956 CHECK_NUMBER (seconds
);
3957 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3961 if (!NILP (seconds
))
3963 double duration
= extract_float (duration
);
3965 duration_to_sec_usec (duration
, &secs
, &usecs
);
3967 else if (!NILP (process
))
3971 (wait_reading_process_output (secs
, usecs
, 0, 0,
3973 !NILP (process
) ? XPROCESS (process
) : NULL
,
3974 NILP (just_this_one
) ? 0 :
3975 !INTEGERP (just_this_one
) ? 1 : -1)
3979 /* Accept a connection for server process SERVER on CHANNEL. */
3981 static int connect_counter
= 0;
3984 server_accept_connection (Lisp_Object server
, int channel
)
3986 Lisp_Object proc
, caller
, name
, buffer
;
3987 Lisp_Object contact
, host
, service
;
3988 struct Lisp_Process
*ps
= XPROCESS (server
);
3989 struct Lisp_Process
*p
;
3993 struct sockaddr_in in
;
3995 struct sockaddr_in6 in6
;
3997 #ifdef HAVE_LOCAL_SOCKETS
3998 struct sockaddr_un un
;
4001 socklen_t len
= sizeof saddr
;
4003 s
= accept (channel
, &saddr
.sa
, &len
);
4012 if (code
== EWOULDBLOCK
)
4016 if (!NILP (ps
->log
))
4017 call3 (ps
->log
, server
, Qnil
,
4018 concat3 (build_string ("accept failed with code"),
4019 Fnumber_to_string (make_number (code
)),
4020 build_string ("\n")));
4026 /* Setup a new process to handle the connection. */
4028 /* Generate a unique identification of the caller, and build contact
4029 information for this process. */
4032 switch (saddr
.sa
.sa_family
)
4036 Lisp_Object args
[5];
4037 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4038 args
[0] = build_string ("%d.%d.%d.%d");
4039 args
[1] = make_number (*ip
++);
4040 args
[2] = make_number (*ip
++);
4041 args
[3] = make_number (*ip
++);
4042 args
[4] = make_number (*ip
++);
4043 host
= Fformat (5, args
);
4044 service
= make_number (ntohs (saddr
.in
.sin_port
));
4046 args
[0] = build_string (" <%s:%d>");
4049 caller
= Fformat (3, args
);
4056 Lisp_Object args
[9];
4057 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4059 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4060 for (i
= 0; i
< 8; i
++)
4061 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4062 host
= Fformat (9, args
);
4063 service
= make_number (ntohs (saddr
.in
.sin_port
));
4065 args
[0] = build_string (" <[%s]:%d>");
4068 caller
= Fformat (3, args
);
4073 #ifdef HAVE_LOCAL_SOCKETS
4077 caller
= Fnumber_to_string (make_number (connect_counter
));
4078 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4082 /* Create a new buffer name for this process if it doesn't have a
4083 filter. The new buffer name is based on the buffer name or
4084 process name of the server process concatenated with the caller
4087 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4091 buffer
= ps
->buffer
;
4093 buffer
= Fbuffer_name (buffer
);
4098 buffer
= concat2 (buffer
, caller
);
4099 buffer
= Fget_buffer_create (buffer
);
4103 /* Generate a unique name for the new server process. Combine the
4104 server process name with the caller identification. */
4106 name
= concat2 (ps
->name
, caller
);
4107 proc
= make_process (name
);
4109 chan_process
[s
] = proc
;
4112 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4115 fcntl (s
, F_SETFL
, O_NDELAY
);
4119 p
= XPROCESS (proc
);
4121 /* Build new contact information for this setup. */
4122 contact
= Fcopy_sequence (ps
->childp
);
4123 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4124 contact
= Fplist_put (contact
, QChost
, host
);
4125 if (!NILP (service
))
4126 contact
= Fplist_put (contact
, QCservice
, service
);
4127 contact
= Fplist_put (contact
, QCremote
,
4128 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4129 #ifdef HAVE_GETSOCKNAME
4131 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4132 contact
= Fplist_put (contact
, QClocal
,
4133 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4136 p
->childp
= contact
;
4137 p
->plist
= Fcopy_sequence (ps
->plist
);
4141 p
->sentinel
= ps
->sentinel
;
4142 p
->filter
= ps
->filter
;
4149 /* Client processes for accepted connections are not stopped initially. */
4150 if (!EQ (p
->filter
, Qt
))
4152 FD_SET (s
, &input_wait_mask
);
4153 FD_SET (s
, &non_keyboard_wait_mask
);
4156 if (s
> max_process_desc
)
4157 max_process_desc
= s
;
4159 /* Setup coding system for new process based on server process.
4160 This seems to be the proper thing to do, as the coding system
4161 of the new process should reflect the settings at the time the
4162 server socket was opened; not the current settings. */
4164 p
->decode_coding_system
= ps
->decode_coding_system
;
4165 p
->encode_coding_system
= ps
->encode_coding_system
;
4166 setup_process_coding_systems (proc
);
4168 p
->decoding_buf
= empty_unibyte_string
;
4169 p
->decoding_carryover
= 0;
4170 p
->encoding_buf
= empty_unibyte_string
;
4172 p
->inherit_coding_system_flag
4173 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4175 if (!NILP (ps
->log
))
4176 call3 (ps
->log
, server
, proc
,
4177 concat3 (build_string ("accept from "),
4178 (STRINGP (host
) ? host
: build_string ("-")),
4179 build_string ("\n")));
4181 if (!NILP (p
->sentinel
))
4182 exec_sentinel (proc
,
4183 concat3 (build_string ("open from "),
4184 (STRINGP (host
) ? host
: build_string ("-")),
4185 build_string ("\n")));
4188 /* This variable is different from waiting_for_input in keyboard.c.
4189 It is used to communicate to a lisp process-filter/sentinel (via the
4190 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4191 for user-input when that process-filter was called.
4192 waiting_for_input cannot be used as that is by definition 0 when
4193 lisp code is being evalled.
4194 This is also used in record_asynch_buffer_change.
4195 For that purpose, this must be 0
4196 when not inside wait_reading_process_output. */
4197 static int waiting_for_user_input_p
;
4200 wait_reading_process_output_unwind (Lisp_Object data
)
4202 waiting_for_user_input_p
= XINT (data
);
4206 /* This is here so breakpoints can be put on it. */
4208 wait_reading_process_output_1 (void)
4212 /* Use a wrapper around select to work around a bug in gdb 5.3.
4213 Normally, the wrapper is optimized away by inlining.
4215 If emacs is stopped inside select, the gdb backtrace doesn't
4216 show the function which called select, so it is practically
4217 impossible to step through wait_reading_process_output. */
4221 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4223 return select (n
, rfd
, wfd
, xfd
, tmo
);
4225 #define select select_wrapper
4228 /* Read and dispose of subprocess output while waiting for timeout to
4229 elapse and/or keyboard input to be available.
4232 timeout in seconds, or
4233 zero for no limit, or
4234 -1 means gobble data immediately available but don't wait for any.
4237 an additional duration to wait, measured in microseconds.
4238 If this is nonzero and time_limit is 0, then the timeout
4239 consists of MICROSECS only.
4241 READ_KBD is a lisp value:
4242 0 to ignore keyboard input, or
4243 1 to return when input is available, or
4244 -1 meaning caller will actually read the input, so don't throw to
4245 the quit handler, or
4247 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4248 output that arrives.
4250 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4251 (and gobble terminal input into the buffer if any arrives).
4253 If WAIT_PROC is specified, wait until something arrives from that
4254 process. The return value is true if we read some input from
4257 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4258 (suspending output from other processes). A negative value
4259 means don't run any timers either.
4261 If WAIT_PROC is specified, then the function returns true if we
4262 received input from that process before the timeout elapsed.
4263 Otherwise, return true if we received input from any process. */
4266 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
4268 Lisp_Object wait_for_cell
,
4269 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4271 register int channel
, nfds
;
4272 SELECT_TYPE Available
;
4273 SELECT_TYPE Writeok
;
4275 int check_delay
, no_avail
;
4278 EMACS_TIME timeout
, end_time
;
4279 int wait_channel
= -1;
4280 int got_some_input
= 0;
4281 ptrdiff_t count
= SPECPDL_INDEX ();
4283 FD_ZERO (&Available
);
4286 if (time_limit
== 0 && microsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4287 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4288 message ("Blocking call to accept-process-output with quit inhibited!!");
4290 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4291 if (wait_proc
!= NULL
)
4292 wait_channel
= wait_proc
->infd
;
4294 record_unwind_protect (wait_reading_process_output_unwind
,
4295 make_number (waiting_for_user_input_p
));
4296 waiting_for_user_input_p
= read_kbd
;
4298 /* Since we may need to wait several times,
4299 compute the absolute time to return at. */
4300 if (time_limit
|| microsecs
)
4302 EMACS_GET_TIME (end_time
);
4303 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4304 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4309 int timeout_reduced_for_timers
= 0;
4311 /* If calling from keyboard input, do not quit
4312 since we want to return C-g as an input character.
4313 Otherwise, do pending quit if requested. */
4318 process_pending_signals ();
4321 /* Exit now if the cell we're waiting for became non-nil. */
4322 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4325 /* Compute time from now till when time limit is up */
4326 /* Exit if already run out */
4327 if (time_limit
== -1)
4329 /* -1 specified for timeout means
4330 gobble output available now
4331 but don't wait at all. */
4333 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4335 else if (time_limit
|| microsecs
)
4337 EMACS_GET_TIME (timeout
);
4338 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4339 if (EMACS_TIME_NEG_P (timeout
))
4344 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4347 /* Normally we run timers here.
4348 But not if wait_for_cell; in those cases,
4349 the wait is supposed to be short,
4350 and those callers cannot handle running arbitrary Lisp code here. */
4351 if (NILP (wait_for_cell
)
4352 && just_wait_proc
>= 0)
4354 EMACS_TIME timer_delay
;
4358 int old_timers_run
= timers_run
;
4359 struct buffer
*old_buffer
= current_buffer
;
4360 Lisp_Object old_window
= selected_window
;
4362 timer_delay
= timer_check ();
4364 /* If a timer has run, this might have changed buffers
4365 an alike. Make read_key_sequence aware of that. */
4366 if (timers_run
!= old_timers_run
4367 && (old_buffer
!= current_buffer
4368 || !EQ (old_window
, selected_window
))
4369 && waiting_for_user_input_p
== -1)
4370 record_asynch_buffer_change ();
4372 if (timers_run
!= old_timers_run
&& do_display
)
4373 /* We must retry, since a timer may have requeued itself
4374 and that could alter the time_delay. */
4375 redisplay_preserve_echo_area (9);
4379 while (!detect_input_pending ());
4381 /* If there is unread keyboard input, also return. */
4383 && requeued_events_pending_p ())
4386 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4388 EMACS_TIME difference
;
4389 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4390 if (EMACS_TIME_NEG_P (difference
))
4392 timeout
= timer_delay
;
4393 timeout_reduced_for_timers
= 1;
4396 /* If time_limit is -1, we are not going to wait at all. */
4397 else if (time_limit
!= -1)
4399 /* This is so a breakpoint can be put here. */
4400 wait_reading_process_output_1 ();
4404 /* Cause C-g and alarm signals to take immediate action,
4405 and cause input available signals to zero out timeout.
4407 It is important that we do this before checking for process
4408 activity. If we get a SIGCHLD after the explicit checks for
4409 process activity, timeout is the only way we will know. */
4411 set_waiting_for_input (&timeout
);
4413 /* If status of something has changed, and no input is
4414 available, notify the user of the change right away. After
4415 this explicit check, we'll let the SIGCHLD handler zap
4416 timeout to get our attention. */
4417 if (update_tick
!= process_tick
)
4422 if (kbd_on_hold_p ())
4425 Atemp
= input_wait_mask
;
4428 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4429 if ((select (max (max_process_desc
, max_input_desc
) + 1,
4431 #ifdef NON_BLOCKING_CONNECT
4432 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4436 (SELECT_TYPE
*)0, &timeout
)
4439 /* It's okay for us to do this and then continue with
4440 the loop, since timeout has already been zeroed out. */
4441 clear_waiting_for_input ();
4442 status_notify (NULL
);
4443 if (do_display
) redisplay_preserve_echo_area (13);
4447 /* Don't wait for output from a non-running process. Just
4448 read whatever data has already been received. */
4449 if (wait_proc
&& wait_proc
->raw_status_new
)
4450 update_status (wait_proc
);
4452 && ! EQ (wait_proc
->status
, Qrun
)
4453 && ! EQ (wait_proc
->status
, Qconnect
))
4455 int nread
, total_nread
= 0;
4457 clear_waiting_for_input ();
4458 XSETPROCESS (proc
, wait_proc
);
4460 /* Read data from the process, until we exhaust it. */
4461 while (wait_proc
->infd
>= 0)
4463 nread
= read_process_output (proc
, wait_proc
->infd
);
4470 total_nread
+= nread
;
4474 else if (nread
== -1 && EIO
== errno
)
4478 else if (nread
== -1 && EAGAIN
== errno
)
4482 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4486 if (total_nread
> 0 && do_display
)
4487 redisplay_preserve_echo_area (10);
4492 /* Wait till there is something to do */
4494 if (wait_proc
&& just_wait_proc
)
4496 if (wait_proc
->infd
< 0) /* Terminated */
4498 FD_SET (wait_proc
->infd
, &Available
);
4502 else if (!NILP (wait_for_cell
))
4504 Available
= non_process_wait_mask
;
4511 Available
= non_keyboard_wait_mask
;
4513 Available
= input_wait_mask
;
4514 Writeok
= write_mask
;
4515 #ifdef SELECT_CANT_DO_WRITE_MASK
4520 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4523 /* If frame size has changed or the window is newly mapped,
4524 redisplay now, before we start to wait. There is a race
4525 condition here; if a SIGIO arrives between now and the select
4526 and indicates that a frame is trashed, the select may block
4527 displaying a trashed screen. */
4528 if (frame_garbaged
&& do_display
)
4530 clear_waiting_for_input ();
4531 redisplay_preserve_echo_area (11);
4533 set_waiting_for_input (&timeout
);
4536 /* Skip the `select' call if input is available and we're
4537 waiting for keyboard input or a cell change (which can be
4538 triggered by processing X events). In the latter case, set
4539 nfds to 1 to avoid breaking the loop. */
4541 if ((read_kbd
|| !NILP (wait_for_cell
))
4542 && detect_input_pending ())
4544 nfds
= read_kbd
? 0 : 1;
4551 #ifdef ADAPTIVE_READ_BUFFERING
4552 /* Set the timeout for adaptive read buffering if any
4553 process has non-zero read_output_skip and non-zero
4554 read_output_delay, and we are not reading output for a
4555 specific wait_channel. It is not executed if
4556 Vprocess_adaptive_read_buffering is nil. */
4557 if (process_output_skip
&& check_delay
> 0)
4559 int usecs
= EMACS_USECS (timeout
);
4560 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4561 usecs
= READ_OUTPUT_DELAY_MAX
;
4562 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4564 proc
= chan_process
[channel
];
4567 /* Find minimum non-zero read_output_delay among the
4568 processes with non-zero read_output_skip. */
4569 if (XPROCESS (proc
)->read_output_delay
> 0)
4572 if (!XPROCESS (proc
)->read_output_skip
)
4574 FD_CLR (channel
, &Available
);
4575 XPROCESS (proc
)->read_output_skip
= 0;
4576 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4577 usecs
= XPROCESS (proc
)->read_output_delay
;
4580 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4581 process_output_skip
= 0;
4584 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
4586 #elif defined (HAVE_NS)
4591 (max (max_process_desc
, max_input_desc
) + 1,
4593 (check_write
? &Writeok
: (SELECT_TYPE
*)0),
4594 (SELECT_TYPE
*)0, &timeout
);
4597 /* GnuTLS buffers data internally. In lowat mode it leaves
4598 some data in the TCP buffers so that select works, but
4599 with custom pull/push functions we need to check if some
4600 data is available in the buffers manually. */
4602 wait_proc
&& wait_proc
->gnutls_p
/* Check for valid process. */
4603 /* Do we have pending data? */
4604 && emacs_gnutls_record_check_pending (wait_proc
->gnutls_state
) > 0)
4607 /* Set to Available. */
4608 FD_SET (wait_proc
->infd
, &Available
);
4615 /* Make C-g and alarm signals set flags again */
4616 clear_waiting_for_input ();
4618 /* If we woke up due to SIGWINCH, actually change size now. */
4619 do_pending_window_change (0);
4621 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4622 /* We wanted the full specified time, so return now. */
4626 if (xerrno
== EINTR
)
4628 else if (xerrno
== EBADF
)
4631 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4632 the child's closure of the pts gives the parent a SIGHUP, and
4633 the ptc file descriptor is automatically closed,
4634 yielding EBADF here or at select() call above.
4635 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4636 in m/ibmrt-aix.h), and here we just ignore the select error.
4637 Cleanup occurs c/o status_notify after SIGCLD. */
4638 no_avail
= 1; /* Cannot depend on values returned */
4644 error ("select error: %s", emacs_strerror (xerrno
));
4649 FD_ZERO (&Available
);
4653 #if 0 /* When polling is used, interrupt_input is 0,
4654 so get_input_pending should read the input.
4655 So this should not be needed. */
4656 /* If we are using polling for input,
4657 and we see input available, make it get read now.
4658 Otherwise it might not actually get read for a second.
4659 And on hpux, since we turn off polling in wait_reading_process_output,
4660 it might never get read at all if we don't spend much time
4661 outside of wait_reading_process_output. */
4662 if (read_kbd
&& interrupt_input
4663 && keyboard_bit_set (&Available
)
4664 && input_polling_used ())
4665 kill (getpid (), SIGALRM
);
4668 /* Check for keyboard input */
4669 /* If there is any, return immediately
4670 to give it higher priority than subprocesses */
4674 int old_timers_run
= timers_run
;
4675 struct buffer
*old_buffer
= current_buffer
;
4676 Lisp_Object old_window
= selected_window
;
4679 if (detect_input_pending_run_timers (do_display
))
4681 swallow_events (do_display
);
4682 if (detect_input_pending_run_timers (do_display
))
4686 /* If a timer has run, this might have changed buffers
4687 an alike. Make read_key_sequence aware of that. */
4688 if (timers_run
!= old_timers_run
4689 && waiting_for_user_input_p
== -1
4690 && (old_buffer
!= current_buffer
4691 || !EQ (old_window
, selected_window
)))
4692 record_asynch_buffer_change ();
4698 /* If there is unread keyboard input, also return. */
4700 && requeued_events_pending_p ())
4703 /* If we are not checking for keyboard input now,
4704 do process events (but don't run any timers).
4705 This is so that X events will be processed.
4706 Otherwise they may have to wait until polling takes place.
4707 That would causes delays in pasting selections, for example.
4709 (We used to do this only if wait_for_cell.) */
4710 if (read_kbd
== 0 && detect_input_pending ())
4712 swallow_events (do_display
);
4713 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4714 if (detect_input_pending ())
4719 /* Exit now if the cell we're waiting for became non-nil. */
4720 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4724 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4725 go read it. This can happen with X on BSD after logging out.
4726 In that case, there really is no input and no SIGIO,
4727 but select says there is input. */
4729 if (read_kbd
&& interrupt_input
4730 && keyboard_bit_set (&Available
) && ! noninteractive
)
4731 kill (getpid (), SIGIO
);
4735 got_some_input
|= nfds
> 0;
4737 /* If checking input just got us a size-change event from X,
4738 obey it now if we should. */
4739 if (read_kbd
|| ! NILP (wait_for_cell
))
4740 do_pending_window_change (0);
4742 /* Check for data from a process. */
4743 if (no_avail
|| nfds
== 0)
4746 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4748 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4749 if (FD_ISSET (channel
, &Available
)
4751 && (d
->condition
& FOR_READ
) != 0)
4752 d
->func (channel
, d
->data
, 1);
4753 if (FD_ISSET (channel
, &write_mask
)
4755 && (d
->condition
& FOR_WRITE
) != 0)
4756 d
->func (channel
, d
->data
, 0);
4759 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4761 if (FD_ISSET (channel
, &Available
)
4762 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4763 && !FD_ISSET (channel
, &non_process_wait_mask
))
4767 /* If waiting for this channel, arrange to return as
4768 soon as no more input to be processed. No more
4770 if (wait_channel
== channel
)
4776 proc
= chan_process
[channel
];
4780 /* If this is a server stream socket, accept connection. */
4781 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4783 server_accept_connection (proc
, channel
);
4787 /* Read data from the process, starting with our
4788 buffered-ahead character if we have one. */
4790 nread
= read_process_output (proc
, channel
);
4793 /* Since read_process_output can run a filter,
4794 which can call accept-process-output,
4795 don't try to read from any other processes
4796 before doing the select again. */
4797 FD_ZERO (&Available
);
4800 redisplay_preserve_echo_area (12);
4803 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4806 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4807 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4809 else if (nread
== -1 && errno
== EAGAIN
)
4813 else if (nread
== -1 && errno
== EAGAIN
)
4815 /* Note that we cannot distinguish between no input
4816 available now and a closed pipe.
4817 With luck, a closed pipe will be accompanied by
4818 subprocess termination and SIGCHLD. */
4819 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4821 #endif /* O_NDELAY */
4822 #endif /* O_NONBLOCK */
4824 /* On some OSs with ptys, when the process on one end of
4825 a pty exits, the other end gets an error reading with
4826 errno = EIO instead of getting an EOF (0 bytes read).
4827 Therefore, if we get an error reading and errno =
4828 EIO, just continue, because the child process has
4829 exited and should clean itself up soon (e.g. when we
4832 However, it has been known to happen that the SIGCHLD
4833 got lost. So raise the signal again just in case.
4835 else if (nread
== -1 && errno
== EIO
)
4837 /* Clear the descriptor now, so we only raise the
4838 signal once. Don't do this if `process' is only
4840 if (XPROCESS (proc
)->pid
!= -2)
4842 FD_CLR (channel
, &input_wait_mask
);
4843 FD_CLR (channel
, &non_keyboard_wait_mask
);
4845 kill (getpid (), SIGCHLD
);
4848 #endif /* HAVE_PTYS */
4849 /* If we can detect process termination, don't consider the process
4850 gone just because its pipe is closed. */
4852 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4857 /* Preserve status of processes already terminated. */
4858 XPROCESS (proc
)->tick
= ++process_tick
;
4859 deactivate_process (proc
);
4860 if (XPROCESS (proc
)->raw_status_new
)
4861 update_status (XPROCESS (proc
));
4862 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4863 XPROCESS (proc
)->status
4864 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4867 #ifdef NON_BLOCKING_CONNECT
4868 if (FD_ISSET (channel
, &Writeok
)
4869 && FD_ISSET (channel
, &connect_wait_mask
))
4871 struct Lisp_Process
*p
;
4873 FD_CLR (channel
, &connect_wait_mask
);
4874 FD_CLR (channel
, &write_mask
);
4875 if (--num_pending_connects
< 0)
4878 proc
= chan_process
[channel
];
4882 p
= XPROCESS (proc
);
4885 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4886 So only use it on systems where it is known to work. */
4888 socklen_t xlen
= sizeof (xerrno
);
4889 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4894 struct sockaddr pname
;
4895 int pnamelen
= sizeof (pname
);
4897 /* If connection failed, getpeername will fail. */
4899 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4901 /* Obtain connect failure code through error slippage. */
4904 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4911 p
->tick
= ++process_tick
;
4912 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4913 deactivate_process (proc
);
4918 /* Execute the sentinel here. If we had relied on
4919 status_notify to do it later, it will read input
4920 from the process before calling the sentinel. */
4921 exec_sentinel (proc
, build_string ("open\n"));
4922 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4924 FD_SET (p
->infd
, &input_wait_mask
);
4925 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4929 #endif /* NON_BLOCKING_CONNECT */
4930 } /* end for each file descriptor */
4931 } /* end while exit conditions not met */
4933 unbind_to (count
, Qnil
);
4935 /* If calling from keyboard input, do not quit
4936 since we want to return C-g as an input character.
4937 Otherwise, do pending quit if requested. */
4940 /* Prevent input_pending from remaining set if we quit. */
4941 clear_input_pending ();
4945 return got_some_input
;
4948 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4951 read_process_output_call (Lisp_Object fun_and_args
)
4953 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4957 read_process_output_error_handler (Lisp_Object error_val
)
4959 cmd_error_internal (error_val
, "error in process filter: ");
4961 update_echo_area ();
4962 Fsleep_for (make_number (2), Qnil
);
4966 /* Read pending output from the process channel,
4967 starting with our buffered-ahead character if we have one.
4968 Yield number of decoded characters read.
4970 This function reads at most 4096 characters.
4971 If you want to read all available subprocess output,
4972 you must call it repeatedly until it returns zero.
4974 The characters read are decoded according to PROC's coding-system
4978 read_process_output (Lisp_Object proc
, register int channel
)
4980 register ssize_t nbytes
;
4982 register Lisp_Object outstream
;
4983 register struct Lisp_Process
*p
= XPROCESS (proc
);
4984 register ptrdiff_t opoint
;
4985 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4986 int carryover
= p
->decoding_carryover
;
4988 ptrdiff_t count
= SPECPDL_INDEX ();
4989 Lisp_Object odeactivate
;
4991 chars
= (char *) alloca (carryover
+ readmax
);
4993 /* See the comment above. */
4994 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4996 #ifdef DATAGRAM_SOCKETS
4997 /* We have a working select, so proc_buffered_char is always -1. */
4998 if (DATAGRAM_CHAN_P (channel
))
5000 socklen_t len
= datagram_address
[channel
].len
;
5001 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5002 0, datagram_address
[channel
].sa
, &len
);
5007 int buffered
= 0 <= proc_buffered_char
[channel
];
5010 chars
[carryover
] = proc_buffered_char
[channel
];
5011 proc_buffered_char
[channel
] = -1;
5014 if (XPROCESS (proc
)->gnutls_p
)
5015 nbytes
= emacs_gnutls_read (XPROCESS (proc
),
5016 chars
+ carryover
+ buffered
,
5017 readmax
- buffered
);
5020 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5021 readmax
- buffered
);
5022 #ifdef ADAPTIVE_READ_BUFFERING
5023 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5025 int delay
= p
->read_output_delay
;
5028 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5031 process_output_delay_count
++;
5032 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5035 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5037 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5039 process_output_delay_count
--;
5041 p
->read_output_delay
= delay
;
5044 p
->read_output_skip
= 1;
5045 process_output_skip
= 1;
5050 nbytes
+= buffered
&& nbytes
<= 0;
5053 p
->decoding_carryover
= 0;
5055 /* At this point, NBYTES holds number of bytes just received
5056 (including the one in proc_buffered_char[channel]). */
5059 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5061 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5064 /* Now set NBYTES how many bytes we must decode. */
5065 nbytes
+= carryover
;
5067 odeactivate
= Vdeactivate_mark
;
5068 /* There's no good reason to let process filters change the current
5069 buffer, and many callers of accept-process-output, sit-for, and
5070 friends don't expect current-buffer to be changed from under them. */
5071 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5073 /* Read and dispose of the process output. */
5074 outstream
= p
->filter
;
5075 if (!NILP (outstream
))
5078 int outer_running_asynch_code
= running_asynch_code
;
5079 int waiting
= waiting_for_user_input_p
;
5081 /* No need to gcpro these, because all we do with them later
5082 is test them for EQness, and none of them should be a string. */
5084 Lisp_Object obuffer
, okeymap
;
5085 XSETBUFFER (obuffer
, current_buffer
);
5086 okeymap
= BVAR (current_buffer
, keymap
);
5089 /* We inhibit quit here instead of just catching it so that
5090 hitting ^G when a filter happens to be running won't screw
5092 specbind (Qinhibit_quit
, Qt
);
5093 specbind (Qlast_nonmenu_event
, Qt
);
5095 /* In case we get recursively called,
5096 and we already saved the match data nonrecursively,
5097 save the same match data in safely recursive fashion. */
5098 if (outer_running_asynch_code
)
5101 /* Don't clobber the CURRENT match data, either! */
5102 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5103 restore_search_regs ();
5104 record_unwind_save_match_data ();
5105 Fset_match_data (tem
, Qt
);
5108 /* For speed, if a search happens within this code,
5109 save the match data in a special nonrecursive fashion. */
5110 running_asynch_code
= 1;
5112 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5113 text
= coding
->dst_object
;
5114 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5115 /* A new coding system might be found. */
5116 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5118 p
->decode_coding_system
= Vlast_coding_system_used
;
5120 /* Don't call setup_coding_system for
5121 proc_decode_coding_system[channel] here. It is done in
5122 detect_coding called via decode_coding above. */
5124 /* If a coding system for encoding is not yet decided, we set
5125 it as the same as coding-system for decoding.
5127 But, before doing that we must check if
5128 proc_encode_coding_system[p->outfd] surely points to a
5129 valid memory because p->outfd will be changed once EOF is
5130 sent to the process. */
5131 if (NILP (p
->encode_coding_system
)
5132 && proc_encode_coding_system
[p
->outfd
])
5134 p
->encode_coding_system
5135 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5136 setup_coding_system (p
->encode_coding_system
,
5137 proc_encode_coding_system
[p
->outfd
]);
5141 if (coding
->carryover_bytes
> 0)
5143 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5144 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5145 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5146 coding
->carryover_bytes
);
5147 p
->decoding_carryover
= coding
->carryover_bytes
;
5149 if (SBYTES (text
) > 0)
5150 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5151 sometimes it's simply wrong to wrap (e.g. when called from
5152 accept-process-output). */
5153 internal_condition_case_1 (read_process_output_call
,
5155 Fcons (proc
, Fcons (text
, Qnil
))),
5156 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5157 read_process_output_error_handler
);
5159 /* If we saved the match data nonrecursively, restore it now. */
5160 restore_search_regs ();
5161 running_asynch_code
= outer_running_asynch_code
;
5163 /* Restore waiting_for_user_input_p as it was
5164 when we were called, in case the filter clobbered it. */
5165 waiting_for_user_input_p
= waiting
;
5167 #if 0 /* Call record_asynch_buffer_change unconditionally,
5168 because we might have changed minor modes or other things
5169 that affect key bindings. */
5170 if (! EQ (Fcurrent_buffer (), obuffer
)
5171 || ! EQ (current_buffer
->keymap
, okeymap
))
5173 /* But do it only if the caller is actually going to read events.
5174 Otherwise there's no need to make him wake up, and it could
5175 cause trouble (for example it would make sit_for return). */
5176 if (waiting_for_user_input_p
== -1)
5177 record_asynch_buffer_change ();
5180 /* If no filter, write into buffer if it isn't dead. */
5181 else if (!NILP (p
->buffer
) && !NILP (BVAR (XBUFFER (p
->buffer
), name
)))
5183 Lisp_Object old_read_only
;
5184 ptrdiff_t old_begv
, old_zv
;
5185 ptrdiff_t old_begv_byte
, old_zv_byte
;
5186 ptrdiff_t before
, before_byte
;
5187 ptrdiff_t opoint_byte
;
5191 Fset_buffer (p
->buffer
);
5193 opoint_byte
= PT_BYTE
;
5194 old_read_only
= BVAR (current_buffer
, read_only
);
5197 old_begv_byte
= BEGV_BYTE
;
5198 old_zv_byte
= ZV_BYTE
;
5200 BVAR (current_buffer
, read_only
) = Qnil
;
5202 /* Insert new output into buffer
5203 at the current end-of-output marker,
5204 thus preserving logical ordering of input and output. */
5205 if (XMARKER (p
->mark
)->buffer
)
5206 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5207 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5210 SET_PT_BOTH (ZV
, ZV_BYTE
);
5212 before_byte
= PT_BYTE
;
5214 /* If the output marker is outside of the visible region, save
5215 the restriction and widen. */
5216 if (! (BEGV
<= PT
&& PT
<= ZV
))
5219 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5220 text
= coding
->dst_object
;
5221 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5222 /* A new coding system might be found. See the comment in the
5223 similar code in the previous `if' block. */
5224 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5226 p
->decode_coding_system
= Vlast_coding_system_used
;
5227 if (NILP (p
->encode_coding_system
)
5228 && proc_encode_coding_system
[p
->outfd
])
5230 p
->encode_coding_system
5231 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5232 setup_coding_system (p
->encode_coding_system
,
5233 proc_encode_coding_system
[p
->outfd
]);
5236 if (coding
->carryover_bytes
> 0)
5238 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5239 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5240 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5241 coding
->carryover_bytes
);
5242 p
->decoding_carryover
= coding
->carryover_bytes
;
5244 /* Adjust the multibyteness of TEXT to that of the buffer. */
5245 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5246 != ! STRING_MULTIBYTE (text
))
5247 text
= (STRING_MULTIBYTE (text
)
5248 ? Fstring_as_unibyte (text
)
5249 : Fstring_to_multibyte (text
));
5250 /* Insert before markers in case we are inserting where
5251 the buffer's mark is, and the user's next command is Meta-y. */
5252 insert_from_string_before_markers (text
, 0, 0,
5253 SCHARS (text
), SBYTES (text
), 0);
5255 /* Make sure the process marker's position is valid when the
5256 process buffer is changed in the signal_after_change above.
5257 W3 is known to do that. */
5258 if (BUFFERP (p
->buffer
)
5259 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5260 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5262 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5264 update_mode_lines
++;
5266 /* Make sure opoint and the old restrictions
5267 float ahead of any new text just as point would. */
5268 if (opoint
>= before
)
5270 opoint
+= PT
- before
;
5271 opoint_byte
+= PT_BYTE
- before_byte
;
5273 if (old_begv
> before
)
5275 old_begv
+= PT
- before
;
5276 old_begv_byte
+= PT_BYTE
- before_byte
;
5278 if (old_zv
>= before
)
5280 old_zv
+= PT
- before
;
5281 old_zv_byte
+= PT_BYTE
- before_byte
;
5284 /* If the restriction isn't what it should be, set it. */
5285 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5286 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5289 BVAR (current_buffer
, read_only
) = old_read_only
;
5290 SET_PT_BOTH (opoint
, opoint_byte
);
5292 /* Handling the process output should not deactivate the mark. */
5293 Vdeactivate_mark
= odeactivate
;
5295 unbind_to (count
, Qnil
);
5299 /* Sending data to subprocess */
5301 static jmp_buf send_process_frame
;
5302 static Lisp_Object process_sent_to
;
5304 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
5305 static void send_process_trap (int) NO_RETURN
;
5309 send_process_trap (int ignore
)
5311 SIGNAL_THREAD_CHECK (SIGPIPE
);
5312 sigunblock (sigmask (SIGPIPE
));
5313 longjmp (send_process_frame
, 1);
5316 /* Send some data to process PROC.
5317 BUF is the beginning of the data; LEN is the number of characters.
5318 OBJECT is the Lisp object that the data comes from. If OBJECT is
5319 nil or t, it means that the data comes from C string.
5321 If OBJECT is not nil, the data is encoded by PROC's coding-system
5322 for encoding before it is sent.
5324 This function can evaluate Lisp code and can garbage collect. */
5327 send_process (volatile Lisp_Object proc
, const char *volatile buf
,
5328 volatile ptrdiff_t len
, volatile Lisp_Object object
)
5330 /* Use volatile to protect variables from being clobbered by longjmp. */
5331 struct Lisp_Process
*p
= XPROCESS (proc
);
5333 struct coding_system
*coding
;
5334 struct gcpro gcpro1
;
5335 void (*volatile old_sigpipe
) (int);
5339 if (p
->raw_status_new
)
5341 if (! EQ (p
->status
, Qrun
))
5342 error ("Process %s not running", SDATA (p
->name
));
5344 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5346 coding
= proc_encode_coding_system
[p
->outfd
];
5347 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5349 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5350 || (BUFFERP (object
)
5351 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5354 p
->encode_coding_system
5355 = complement_process_encoding_system (p
->encode_coding_system
);
5356 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5358 /* The coding system for encoding was changed to raw-text
5359 because we sent a unibyte text previously. Now we are
5360 sending a multibyte text, thus we must encode it by the
5361 original coding system specified for the current process.
5363 Another reason we comming here is that the coding system
5364 was just complemented and new one was returned by
5365 complement_process_encoding_system. */
5366 setup_coding_system (p
->encode_coding_system
, coding
);
5367 Vlast_coding_system_used
= p
->encode_coding_system
;
5369 coding
->src_multibyte
= 1;
5373 /* For sending a unibyte text, character code conversion should
5374 not take place but EOL conversion should. So, setup raw-text
5375 or one of the subsidiary if we have not yet done it. */
5376 if (CODING_REQUIRE_ENCODING (coding
))
5378 if (CODING_REQUIRE_FLUSHING (coding
))
5380 /* But, before changing the coding, we must flush out data. */
5381 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5382 send_process (proc
, "", 0, Qt
);
5383 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5385 setup_coding_system (raw_text_coding_system
5386 (Vlast_coding_system_used
),
5388 coding
->src_multibyte
= 0;
5391 coding
->dst_multibyte
= 0;
5393 if (CODING_REQUIRE_ENCODING (coding
))
5395 coding
->dst_object
= Qt
;
5396 if (BUFFERP (object
))
5398 ptrdiff_t from_byte
, from
, to
;
5399 ptrdiff_t save_pt
, save_pt_byte
;
5400 struct buffer
*cur
= current_buffer
;
5402 set_buffer_internal (XBUFFER (object
));
5403 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5405 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5406 from
= BYTE_TO_CHAR (from_byte
);
5407 to
= BYTE_TO_CHAR (from_byte
+ len
);
5408 TEMP_SET_PT_BOTH (from
, from_byte
);
5409 encode_coding_object (coding
, object
, from
, from_byte
,
5410 to
, from_byte
+ len
, Qt
);
5411 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5412 set_buffer_internal (cur
);
5414 else if (STRINGP (object
))
5416 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5417 SBYTES (object
), Qt
);
5421 coding
->dst_object
= make_unibyte_string (buf
, len
);
5422 coding
->produced
= len
;
5425 len
= coding
->produced
;
5426 object
= coding
->dst_object
;
5427 buf
= SSDATA (object
);
5430 if (pty_max_bytes
== 0)
5432 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5433 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5434 if (pty_max_bytes
< 0)
5435 pty_max_bytes
= 250;
5437 pty_max_bytes
= 250;
5439 /* Deduct one, to leave space for the eof. */
5443 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5444 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5445 when returning with longjmp despite being declared volatile. */
5446 if (!setjmp (send_process_frame
))
5448 p
= XPROCESS (proc
); /* Repair any setjmp clobbering. */
5450 process_sent_to
= proc
;
5453 ptrdiff_t this = len
;
5455 /* Send this batch, using one or more write calls. */
5458 ptrdiff_t written
= 0;
5459 int outfd
= p
->outfd
;
5460 old_sigpipe
= (void (*) (int)) signal (SIGPIPE
, send_process_trap
);
5461 #ifdef DATAGRAM_SOCKETS
5462 if (DATAGRAM_CHAN_P (outfd
))
5464 rv
= sendto (outfd
, buf
, this,
5465 0, datagram_address
[outfd
].sa
,
5466 datagram_address
[outfd
].len
);
5469 else if (errno
== EMSGSIZE
)
5471 signal (SIGPIPE
, old_sigpipe
);
5472 report_file_error ("sending datagram",
5473 Fcons (proc
, Qnil
));
5480 if (XPROCESS (proc
)->gnutls_p
)
5481 written
= emacs_gnutls_write (XPROCESS (proc
),
5485 written
= emacs_write (outfd
, buf
, this);
5486 rv
= (written
? 0 : -1);
5487 #ifdef ADAPTIVE_READ_BUFFERING
5488 if (p
->read_output_delay
> 0
5489 && p
->adaptive_read_buffering
== 1)
5491 p
->read_output_delay
= 0;
5492 process_output_delay_count
--;
5493 p
->read_output_skip
= 0;
5497 signal (SIGPIPE
, old_sigpipe
);
5503 || errno
== EWOULDBLOCK
5509 /* Buffer is full. Wait, accepting input;
5510 that may allow the program
5511 to finish doing output and read more. */
5513 ptrdiff_t offset
= 0;
5515 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5516 /* A gross hack to work around a bug in FreeBSD.
5517 In the following sequence, read(2) returns
5521 write(2) 954 bytes, get EAGAIN
5522 read(2) 1024 bytes in process_read_output
5523 read(2) 11 bytes in process_read_output
5525 That is, read(2) returns more bytes than have
5526 ever been written successfully. The 1033 bytes
5527 read are the 1022 bytes written successfully
5528 after processing (for example with CRs added if
5529 the terminal is set up that way which it is
5530 here). The same bytes will be seen again in a
5531 later read(2), without the CRs. */
5533 if (errno
== EAGAIN
)
5536 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5538 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5540 /* Running filters might relocate buffers or strings.
5541 Arrange to relocate BUF. */
5542 if (BUFFERP (object
))
5543 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
),
5544 (unsigned char *) buf
);
5545 else if (STRINGP (object
))
5546 offset
= buf
- SSDATA (object
);
5548 #ifdef EMACS_HAS_USECS
5549 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5551 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5554 if (BUFFERP (object
))
5555 buf
= (char *) BUF_BYTE_ADDRESS (XBUFFER (object
),
5557 else if (STRINGP (object
))
5558 buf
= offset
+ SSDATA (object
);
5561 /* This is a real error. */
5562 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5572 signal (SIGPIPE
, old_sigpipe
);
5573 proc
= process_sent_to
;
5574 p
= XPROCESS (proc
);
5575 p
->raw_status_new
= 0;
5576 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5577 p
->tick
= ++process_tick
;
5578 deactivate_process (proc
);
5579 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5585 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5587 doc
: /* Send current contents of region as input to PROCESS.
5588 PROCESS may be a process, a buffer, the name of a process or buffer, or
5589 nil, indicating the current buffer's process.
5590 Called from program, takes three arguments, PROCESS, START and END.
5591 If the region is more than 500 characters long,
5592 it is sent in several bunches. This may happen even for shorter regions.
5593 Output from processes can arrive in between bunches. */)
5594 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5597 ptrdiff_t start1
, end1
;
5599 proc
= get_process (process
);
5600 validate_region (&start
, &end
);
5602 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5603 move_gap (XINT (start
));
5605 start1
= CHAR_TO_BYTE (XINT (start
));
5606 end1
= CHAR_TO_BYTE (XINT (end
));
5607 send_process (proc
, (char *) BYTE_POS_ADDR (start1
), end1
- start1
,
5608 Fcurrent_buffer ());
5613 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5615 doc
: /* Send PROCESS the contents of STRING as input.
5616 PROCESS may be a process, a buffer, the name of a process or buffer, or
5617 nil, indicating the current buffer's process.
5618 If STRING is more than 500 characters long,
5619 it is sent in several bunches. This may happen even for shorter strings.
5620 Output from processes can arrive in between bunches. */)
5621 (Lisp_Object process
, Lisp_Object string
)
5624 CHECK_STRING (string
);
5625 proc
= get_process (process
);
5626 send_process (proc
, SSDATA (string
),
5627 SBYTES (string
), string
);
5631 /* Return the foreground process group for the tty/pty that
5632 the process P uses. */
5634 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5639 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5642 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5643 master side. Try the slave side. */
5644 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5648 ioctl (fd
, TIOCGPGRP
, &gid
);
5652 #endif /* defined (TIOCGPGRP ) */
5657 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5658 Sprocess_running_child_p
, 0, 1, 0,
5659 doc
: /* Return t if PROCESS has given the terminal to a child.
5660 If the operating system does not make it possible to find out,
5661 return t unconditionally. */)
5662 (Lisp_Object process
)
5664 /* Initialize in case ioctl doesn't exist or gives an error,
5665 in a way that will cause returning t. */
5668 struct Lisp_Process
*p
;
5670 proc
= get_process (process
);
5671 p
= XPROCESS (proc
);
5673 if (!EQ (p
->type
, Qreal
))
5674 error ("Process %s is not a subprocess",
5677 error ("Process %s is not active",
5680 gid
= emacs_get_tty_pgrp (p
);
5687 /* send a signal number SIGNO to PROCESS.
5688 If CURRENT_GROUP is t, that means send to the process group
5689 that currently owns the terminal being used to communicate with PROCESS.
5690 This is used for various commands in shell mode.
5691 If CURRENT_GROUP is lambda, that means send to the process group
5692 that currently owns the terminal, but only if it is NOT the shell itself.
5694 If NOMSG is zero, insert signal-announcements into process's buffers
5697 If we can, we try to signal PROCESS by sending control characters
5698 down the pty. This allows us to signal inferiors who have changed
5699 their uid, for which killpg would return an EPERM error. */
5702 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5706 register struct Lisp_Process
*p
;
5710 proc
= get_process (process
);
5711 p
= XPROCESS (proc
);
5713 if (!EQ (p
->type
, Qreal
))
5714 error ("Process %s is not a subprocess",
5717 error ("Process %s is not active",
5721 current_group
= Qnil
;
5723 /* If we are using pgrps, get a pgrp number and make it negative. */
5724 if (NILP (current_group
))
5725 /* Send the signal to the shell's process group. */
5729 #ifdef SIGNALS_VIA_CHARACTERS
5730 /* If possible, send signals to the entire pgrp
5731 by sending an input character to it. */
5734 cc_t
*sig_char
= NULL
;
5736 tcgetattr (p
->infd
, &t
);
5741 sig_char
= &t
.c_cc
[VINTR
];
5745 sig_char
= &t
.c_cc
[VQUIT
];
5749 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5750 sig_char
= &t
.c_cc
[VSWTCH
];
5752 sig_char
= &t
.c_cc
[VSUSP
];
5757 if (sig_char
&& *sig_char
!= CDISABLE
)
5759 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5762 /* If we can't send the signal with a character,
5763 fall through and send it another way. */
5765 /* The code above may fall through if it can't
5766 handle the signal. */
5767 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5770 /* Get the current pgrp using the tty itself, if we have that.
5771 Otherwise, use the pty to get the pgrp.
5772 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5773 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5774 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5775 His patch indicates that if TIOCGPGRP returns an error, then
5776 we should just assume that p->pid is also the process group id. */
5778 gid
= emacs_get_tty_pgrp (p
);
5781 /* If we can't get the information, assume
5782 the shell owns the tty. */
5785 /* It is not clear whether anything really can set GID to -1.
5786 Perhaps on some system one of those ioctls can or could do so.
5787 Or perhaps this is vestigial. */
5790 #else /* ! defined (TIOCGPGRP ) */
5791 /* Can't select pgrps on this system, so we know that
5792 the child itself heads the pgrp. */
5794 #endif /* ! defined (TIOCGPGRP ) */
5796 /* If current_group is lambda, and the shell owns the terminal,
5797 don't send any signal. */
5798 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5806 p
->raw_status_new
= 0;
5808 p
->tick
= ++process_tick
;
5811 status_notify (NULL
);
5812 redisplay_preserve_echo_area (13);
5815 #endif /* ! defined (SIGCONT) */
5819 flush_pending_output (p
->infd
);
5823 /* If we don't have process groups, send the signal to the immediate
5824 subprocess. That isn't really right, but it's better than any
5825 obvious alternative. */
5828 kill (p
->pid
, signo
);
5832 /* gid may be a pid, or minus a pgrp's number */
5834 if (!NILP (current_group
))
5836 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5837 EMACS_KILLPG (gid
, signo
);
5844 #else /* ! defined (TIOCSIGSEND) */
5845 EMACS_KILLPG (gid
, signo
);
5846 #endif /* ! defined (TIOCSIGSEND) */
5849 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5850 doc
: /* Interrupt process PROCESS.
5851 PROCESS may be a process, a buffer, or the name of a process or buffer.
5852 No arg or nil means current buffer's process.
5853 Second arg CURRENT-GROUP non-nil means send signal to
5854 the current process-group of the process's controlling terminal
5855 rather than to the process's own process group.
5856 If the process is a shell, this means interrupt current subjob
5857 rather than the shell.
5859 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5860 don't send the signal. */)
5861 (Lisp_Object process
, Lisp_Object current_group
)
5863 process_send_signal (process
, SIGINT
, current_group
, 0);
5867 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5868 doc
: /* Kill process PROCESS. May be process or name of one.
5869 See function `interrupt-process' for more details on usage. */)
5870 (Lisp_Object process
, Lisp_Object current_group
)
5872 process_send_signal (process
, SIGKILL
, current_group
, 0);
5876 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5877 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5878 See function `interrupt-process' for more details on usage. */)
5879 (Lisp_Object process
, Lisp_Object current_group
)
5881 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5885 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5886 doc
: /* Stop process PROCESS. May be process or name of one.
5887 See function `interrupt-process' for more details on usage.
5888 If PROCESS is a network or serial process, inhibit handling of incoming
5890 (Lisp_Object process
, Lisp_Object current_group
)
5892 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5894 struct Lisp_Process
*p
;
5896 p
= XPROCESS (process
);
5897 if (NILP (p
->command
)
5900 FD_CLR (p
->infd
, &input_wait_mask
);
5901 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5907 error ("No SIGTSTP support");
5909 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5914 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5915 doc
: /* Continue process PROCESS. May be process or name of one.
5916 See function `interrupt-process' for more details on usage.
5917 If PROCESS is a network or serial process, resume handling of incoming
5919 (Lisp_Object process
, Lisp_Object current_group
)
5921 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5923 struct Lisp_Process
*p
;
5925 p
= XPROCESS (process
);
5926 if (EQ (p
->command
, Qt
)
5928 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5930 FD_SET (p
->infd
, &input_wait_mask
);
5931 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5933 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5934 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5935 #else /* not WINDOWSNT */
5936 tcflush (p
->infd
, TCIFLUSH
);
5937 #endif /* not WINDOWSNT */
5943 process_send_signal (process
, SIGCONT
, current_group
, 0);
5945 error ("No SIGCONT support");
5950 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5951 2, 2, "sProcess (name or number): \nnSignal code: ",
5952 doc
: /* Send PROCESS the signal with code SIGCODE.
5953 PROCESS may also be a number specifying the process id of the
5954 process to signal; in this case, the process need not be a child of
5956 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5957 (Lisp_Object process
, Lisp_Object sigcode
)
5961 if (INTEGERP (process
))
5963 CHECK_TYPE_RANGED_INTEGER (pid_t
, process
);
5964 pid
= XINT (process
);
5968 if (FLOATP (process
))
5970 double v
= XFLOAT_DATA (process
);
5971 if (! (TYPE_MINIMUM (pid_t
) <= v
&& v
< TYPE_MAXIMUM (pid_t
) + 1.0))
5972 args_out_of_range_3 (process
,
5973 make_fixnum_or_float (TYPE_MINIMUM (pid_t
)),
5974 make_fixnum_or_float (TYPE_MAXIMUM (pid_t
)));
5979 if (STRINGP (process
))
5981 Lisp_Object tem
= Fget_process (process
);
5984 EMACS_INT v
= XINT (Fstring_to_number (process
, make_number (10)));
5985 if (0 < v
&& v
<= TYPE_MAXIMUM (pid_t
))
5994 process
= get_process (process
);
5999 CHECK_PROCESS (process
);
6000 pid
= XPROCESS (process
)->pid
;
6002 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6006 #define parse_signal(NAME, VALUE) \
6007 else if (!xstrcasecmp (name, NAME)) \
6008 XSETINT (sigcode, VALUE)
6010 if (INTEGERP (sigcode
))
6011 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6016 CHECK_SYMBOL (sigcode
);
6017 name
= SSDATA (SYMBOL_NAME (sigcode
));
6019 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6025 parse_signal ("usr1", SIGUSR1
);
6028 parse_signal ("usr2", SIGUSR2
);
6031 parse_signal ("term", SIGTERM
);
6034 parse_signal ("hup", SIGHUP
);
6037 parse_signal ("int", SIGINT
);
6040 parse_signal ("quit", SIGQUIT
);
6043 parse_signal ("ill", SIGILL
);
6046 parse_signal ("abrt", SIGABRT
);
6049 parse_signal ("emt", SIGEMT
);
6052 parse_signal ("kill", SIGKILL
);
6055 parse_signal ("fpe", SIGFPE
);
6058 parse_signal ("bus", SIGBUS
);
6061 parse_signal ("segv", SIGSEGV
);
6064 parse_signal ("sys", SIGSYS
);
6067 parse_signal ("pipe", SIGPIPE
);
6070 parse_signal ("alrm", SIGALRM
);
6073 parse_signal ("urg", SIGURG
);
6076 parse_signal ("stop", SIGSTOP
);
6079 parse_signal ("tstp", SIGTSTP
);
6082 parse_signal ("cont", SIGCONT
);
6085 parse_signal ("chld", SIGCHLD
);
6088 parse_signal ("ttin", SIGTTIN
);
6091 parse_signal ("ttou", SIGTTOU
);
6094 parse_signal ("io", SIGIO
);
6097 parse_signal ("xcpu", SIGXCPU
);
6100 parse_signal ("xfsz", SIGXFSZ
);
6103 parse_signal ("vtalrm", SIGVTALRM
);
6106 parse_signal ("prof", SIGPROF
);
6109 parse_signal ("winch", SIGWINCH
);
6112 parse_signal ("info", SIGINFO
);
6115 error ("Undefined signal name %s", name
);
6120 return make_number (kill (pid
, XINT (sigcode
)));
6123 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6124 doc
: /* Make PROCESS see end-of-file in its input.
6125 EOF comes after any text already sent to it.
6126 PROCESS may be a process, a buffer, the name of a process or buffer, or
6127 nil, indicating the current buffer's process.
6128 If PROCESS is a network connection, or is a process communicating
6129 through a pipe (as opposed to a pty), then you cannot send any more
6130 text to PROCESS after you call this function.
6131 If PROCESS is a serial process, wait until all output written to the
6132 process has been transmitted to the serial port. */)
6133 (Lisp_Object process
)
6136 struct coding_system
*coding
;
6138 if (DATAGRAM_CONN_P (process
))
6141 proc
= get_process (process
);
6142 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6144 /* Make sure the process is really alive. */
6145 if (XPROCESS (proc
)->raw_status_new
)
6146 update_status (XPROCESS (proc
));
6147 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6148 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6150 if (CODING_REQUIRE_FLUSHING (coding
))
6152 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6153 send_process (proc
, "", 0, Qnil
);
6156 if (XPROCESS (proc
)->pty_flag
)
6157 send_process (proc
, "\004", 1, Qnil
);
6158 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6161 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6162 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6163 #endif /* not WINDOWSNT */
6164 /* Do nothing on Windows because writes are blocking. */
6168 int old_outfd
, new_outfd
;
6170 #ifdef HAVE_SHUTDOWN
6171 /* If this is a network connection, or socketpair is used
6172 for communication with the subprocess, call shutdown to cause EOF.
6173 (In some old system, shutdown to socketpair doesn't work.
6174 Then we just can't win.) */
6175 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6176 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6177 shutdown (XPROCESS (proc
)->outfd
, 1);
6178 /* In case of socketpair, outfd == infd, so don't close it. */
6179 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6180 emacs_close (XPROCESS (proc
)->outfd
);
6181 #else /* not HAVE_SHUTDOWN */
6182 emacs_close (XPROCESS (proc
)->outfd
);
6183 #endif /* not HAVE_SHUTDOWN */
6184 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6187 old_outfd
= XPROCESS (proc
)->outfd
;
6189 if (!proc_encode_coding_system
[new_outfd
])
6190 proc_encode_coding_system
[new_outfd
]
6191 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6192 memcpy (proc_encode_coding_system
[new_outfd
],
6193 proc_encode_coding_system
[old_outfd
],
6194 sizeof (struct coding_system
));
6195 memset (proc_encode_coding_system
[old_outfd
], 0,
6196 sizeof (struct coding_system
));
6198 XPROCESS (proc
)->outfd
= new_outfd
;
6203 /* On receipt of a signal that a child status has changed, loop asking
6204 about children with changed statuses until the system says there
6207 All we do is change the status; we do not run sentinels or print
6208 notifications. That is saved for the next time keyboard input is
6209 done, in order to avoid timing errors.
6211 ** WARNING: this can be called during garbage collection.
6212 Therefore, it must not be fooled by the presence of mark bits in
6215 ** USG WARNING: Although it is not obvious from the documentation
6216 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6217 signal() before executing at least one wait(), otherwise the
6218 handler will be called again, resulting in an infinite loop. The
6219 relevant portion of the documentation reads "SIGCLD signals will be
6220 queued and the signal-catching function will be continually
6221 reentered until the queue is empty". Invoking signal() causes the
6222 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6225 ** Malloc WARNING: This should never call malloc either directly or
6226 indirectly; if it does, that is a bug */
6230 sigchld_handler (int signo
)
6232 int old_errno
= errno
;
6234 struct Lisp_Process
*p
;
6236 SIGNAL_THREAD_CHECK (signo
);
6247 #endif /* no WUNTRACED */
6248 /* Keep trying to get a status until we get a definitive result. */
6252 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6254 while (pid
< 0 && errno
== EINTR
);
6258 /* PID == 0 means no processes found, PID == -1 means a real
6259 failure. We have done all our job, so return. */
6266 #endif /* no WNOHANG */
6268 /* Find the process that signaled us, and record its status. */
6270 /* The process can have been deleted by Fdelete_process. */
6271 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6273 Lisp_Object xpid
= XCAR (tail
);
6274 if ((INTEGERP (xpid
) && pid
== XINT (xpid
))
6275 || (FLOATP (xpid
) && pid
== XFLOAT_DATA (xpid
)))
6277 XSETCAR (tail
, Qnil
);
6278 goto sigchld_end_of_loop
;
6282 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6284 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6286 proc
= XCDR (XCAR (tail
));
6287 p
= XPROCESS (proc
);
6288 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6293 /* Look for an asynchronous process whose pid hasn't been filled
6296 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6298 proc
= XCDR (XCAR (tail
));
6299 p
= XPROCESS (proc
);
6305 /* Change the status of the process that was found. */
6308 int clear_desc_flag
= 0;
6310 p
->tick
= ++process_tick
;
6312 p
->raw_status_new
= 1;
6314 /* If process has terminated, stop waiting for its output. */
6315 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6317 clear_desc_flag
= 1;
6319 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6320 if (clear_desc_flag
)
6322 FD_CLR (p
->infd
, &input_wait_mask
);
6323 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6326 /* Tell wait_reading_process_output that it needs to wake up and
6328 if (input_available_clear_time
)
6329 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6332 /* There was no asynchronous process found for that pid: we have
6333 a synchronous process. */
6336 synch_process_alive
= 0;
6338 /* Report the status of the synchronous process. */
6340 synch_process_retcode
= WRETCODE (w
);
6341 else if (WIFSIGNALED (w
))
6342 synch_process_termsig
= WTERMSIG (w
);
6344 /* Tell wait_reading_process_output that it needs to wake up and
6346 if (input_available_clear_time
)
6347 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6350 sigchld_end_of_loop
:
6353 /* On some systems, we must return right away.
6354 If any more processes want to signal us, we will
6356 Otherwise (on systems that have WNOHANG), loop around
6357 to use up all the processes that have something to tell us. */
6358 #if (defined WINDOWSNT \
6359 || (defined USG && !defined GNU_LINUX \
6360 && !(defined HPUX && defined WNOHANG)))
6363 #endif /* USG, but not HPUX with WNOHANG */
6366 #endif /* SIGCHLD */
6370 exec_sentinel_unwind (Lisp_Object data
)
6372 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6377 exec_sentinel_error_handler (Lisp_Object error_val
)
6379 cmd_error_internal (error_val
, "error in process sentinel: ");
6381 update_echo_area ();
6382 Fsleep_for (make_number (2), Qnil
);
6387 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6389 Lisp_Object sentinel
, odeactivate
;
6390 register struct Lisp_Process
*p
= XPROCESS (proc
);
6391 ptrdiff_t count
= SPECPDL_INDEX ();
6392 int outer_running_asynch_code
= running_asynch_code
;
6393 int waiting
= waiting_for_user_input_p
;
6395 if (inhibit_sentinels
)
6398 /* No need to gcpro these, because all we do with them later
6399 is test them for EQness, and none of them should be a string. */
6400 odeactivate
= Vdeactivate_mark
;
6402 Lisp_Object obuffer
, okeymap
;
6403 XSETBUFFER (obuffer
, current_buffer
);
6404 okeymap
= BVAR (current_buffer
, keymap
);
6407 /* There's no good reason to let sentinels change the current
6408 buffer, and many callers of accept-process-output, sit-for, and
6409 friends don't expect current-buffer to be changed from under them. */
6410 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6412 sentinel
= p
->sentinel
;
6413 if (NILP (sentinel
))
6416 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6417 assure that it gets restored no matter how the sentinel exits. */
6419 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6420 /* Inhibit quit so that random quits don't screw up a running filter. */
6421 specbind (Qinhibit_quit
, Qt
);
6422 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6424 /* In case we get recursively called,
6425 and we already saved the match data nonrecursively,
6426 save the same match data in safely recursive fashion. */
6427 if (outer_running_asynch_code
)
6430 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6431 restore_search_regs ();
6432 record_unwind_save_match_data ();
6433 Fset_match_data (tem
, Qt
);
6436 /* For speed, if a search happens within this code,
6437 save the match data in a special nonrecursive fashion. */
6438 running_asynch_code
= 1;
6440 internal_condition_case_1 (read_process_output_call
,
6442 Fcons (proc
, Fcons (reason
, Qnil
))),
6443 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6444 exec_sentinel_error_handler
);
6446 /* If we saved the match data nonrecursively, restore it now. */
6447 restore_search_regs ();
6448 running_asynch_code
= outer_running_asynch_code
;
6450 Vdeactivate_mark
= odeactivate
;
6452 /* Restore waiting_for_user_input_p as it was
6453 when we were called, in case the filter clobbered it. */
6454 waiting_for_user_input_p
= waiting
;
6457 if (! EQ (Fcurrent_buffer (), obuffer
)
6458 || ! EQ (current_buffer
->keymap
, okeymap
))
6460 /* But do it only if the caller is actually going to read events.
6461 Otherwise there's no need to make him wake up, and it could
6462 cause trouble (for example it would make sit_for return). */
6463 if (waiting_for_user_input_p
== -1)
6464 record_asynch_buffer_change ();
6466 unbind_to (count
, Qnil
);
6469 /* Report all recent events of a change in process status
6470 (either run the sentinel or output a message).
6471 This is usually done while Emacs is waiting for keyboard input
6472 but can be done at other times. */
6475 status_notify (struct Lisp_Process
*deleting_process
)
6477 register Lisp_Object proc
, buffer
;
6478 Lisp_Object tail
, msg
;
6479 struct gcpro gcpro1
, gcpro2
;
6483 /* We need to gcpro tail; if read_process_output calls a filter
6484 which deletes a process and removes the cons to which tail points
6485 from Vprocess_alist, and then causes a GC, tail is an unprotected
6489 /* Set this now, so that if new processes are created by sentinels
6490 that we run, we get called again to handle their status changes. */
6491 update_tick
= process_tick
;
6493 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6496 register struct Lisp_Process
*p
;
6498 proc
= Fcdr (XCAR (tail
));
6499 p
= XPROCESS (proc
);
6501 if (p
->tick
!= p
->update_tick
)
6503 p
->update_tick
= p
->tick
;
6505 /* If process is still active, read any output that remains. */
6506 while (! EQ (p
->filter
, Qt
)
6507 && ! EQ (p
->status
, Qconnect
)
6508 && ! EQ (p
->status
, Qlisten
)
6509 /* Network or serial process not stopped: */
6510 && ! EQ (p
->command
, Qt
)
6512 && p
!= deleting_process
6513 && read_process_output (proc
, p
->infd
) > 0);
6517 /* Get the text to use for the message. */
6518 if (p
->raw_status_new
)
6520 msg
= status_message (p
);
6522 /* If process is terminated, deactivate it or delete it. */
6524 if (CONSP (p
->status
))
6525 symbol
= XCAR (p
->status
);
6527 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6528 || EQ (symbol
, Qclosed
))
6530 if (delete_exited_processes
)
6531 remove_process (proc
);
6533 deactivate_process (proc
);
6536 /* The actions above may have further incremented p->tick.
6537 So set p->update_tick again
6538 so that an error in the sentinel will not cause
6539 this code to be run again. */
6540 p
->update_tick
= p
->tick
;
6541 /* Now output the message suitably. */
6542 if (!NILP (p
->sentinel
))
6543 exec_sentinel (proc
, msg
);
6544 /* Don't bother with a message in the buffer
6545 when a process becomes runnable. */
6546 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6549 struct buffer
*old
= current_buffer
;
6550 ptrdiff_t opoint
, opoint_byte
;
6551 ptrdiff_t before
, before_byte
;
6553 /* Avoid error if buffer is deleted
6554 (probably that's why the process is dead, too) */
6555 if (NILP (BVAR (XBUFFER (buffer
), name
)))
6557 Fset_buffer (buffer
);
6560 opoint_byte
= PT_BYTE
;
6561 /* Insert new output into buffer
6562 at the current end-of-output marker,
6563 thus preserving logical ordering of input and output. */
6564 if (XMARKER (p
->mark
)->buffer
)
6565 Fgoto_char (p
->mark
);
6567 SET_PT_BOTH (ZV
, ZV_BYTE
);
6570 before_byte
= PT_BYTE
;
6572 tem
= BVAR (current_buffer
, read_only
);
6573 BVAR (current_buffer
, read_only
) = Qnil
;
6574 insert_string ("\nProcess ");
6575 Finsert (1, &p
->name
);
6576 insert_string (" ");
6578 BVAR (current_buffer
, read_only
) = tem
;
6579 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6581 if (opoint
>= before
)
6582 SET_PT_BOTH (opoint
+ (PT
- before
),
6583 opoint_byte
+ (PT_BYTE
- before_byte
));
6585 SET_PT_BOTH (opoint
, opoint_byte
);
6587 set_buffer_internal (old
);
6592 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6597 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6598 Sset_process_coding_system
, 1, 3, 0,
6599 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6600 DECODING will be used to decode subprocess output and ENCODING to
6601 encode subprocess input. */)
6602 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6604 register struct Lisp_Process
*p
;
6606 CHECK_PROCESS (process
);
6607 p
= XPROCESS (process
);
6609 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6611 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6612 Fcheck_coding_system (decoding
);
6613 Fcheck_coding_system (encoding
);
6614 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6615 p
->decode_coding_system
= decoding
;
6616 p
->encode_coding_system
= encoding
;
6617 setup_process_coding_systems (process
);
6622 DEFUN ("process-coding-system",
6623 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6624 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6625 (register Lisp_Object process
)
6627 CHECK_PROCESS (process
);
6628 return Fcons (XPROCESS (process
)->decode_coding_system
,
6629 XPROCESS (process
)->encode_coding_system
);
6632 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6633 Sset_process_filter_multibyte
, 2, 2, 0,
6634 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6635 If FLAG is non-nil, the filter is given multibyte strings.
6636 If FLAG is nil, the filter is given unibyte strings. In this case,
6637 all character code conversion except for end-of-line conversion is
6639 (Lisp_Object process
, Lisp_Object flag
)
6641 register struct Lisp_Process
*p
;
6643 CHECK_PROCESS (process
);
6644 p
= XPROCESS (process
);
6646 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6647 setup_process_coding_systems (process
);
6652 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6653 Sprocess_filter_multibyte_p
, 1, 1, 0,
6654 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6655 (Lisp_Object process
)
6657 register struct Lisp_Process
*p
;
6658 struct coding_system
*coding
;
6660 CHECK_PROCESS (process
);
6661 p
= XPROCESS (process
);
6662 coding
= proc_decode_coding_system
[p
->infd
];
6663 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6672 add_gpm_wait_descriptor (int desc
)
6674 add_keyboard_wait_descriptor (desc
);
6678 delete_gpm_wait_descriptor (int desc
)
6680 delete_keyboard_wait_descriptor (desc
);
6687 /* Return nonzero if *MASK has a bit set
6688 that corresponds to one of the keyboard input descriptors. */
6691 keyboard_bit_set (fd_set
*mask
)
6695 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6696 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6697 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6704 #else /* not subprocesses */
6706 /* Defined on msdos.c. */
6707 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6710 /* Implementation of wait_reading_process_output, assuming that there
6711 are no subprocesses. Used only by the MS-DOS build.
6713 Wait for timeout to elapse and/or keyboard input to be available.
6716 timeout in seconds, or
6717 zero for no limit, or
6718 -1 means gobble data immediately available but don't wait for any.
6720 read_kbd is a Lisp_Object:
6721 0 to ignore keyboard input, or
6722 1 to return when input is available, or
6723 -1 means caller will actually read the input, so don't throw to
6726 see full version for other parameters. We know that wait_proc will
6727 always be NULL, since `subprocesses' isn't defined.
6729 do_display != 0 means redisplay should be done to show subprocess
6730 output that arrives.
6732 Return true if we received input from any process. */
6735 wait_reading_process_output (int time_limit
, int microsecs
, int read_kbd
,
6737 Lisp_Object wait_for_cell
,
6738 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6741 EMACS_TIME end_time
, timeout
;
6742 SELECT_TYPE waitchannels
;
6745 /* What does time_limit really mean? */
6746 if (time_limit
|| microsecs
)
6748 EMACS_GET_TIME (end_time
);
6749 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6750 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6753 /* Turn off periodic alarms (in case they are in use)
6754 and then turn off any other atimers,
6755 because the select emulator uses alarms. */
6757 turn_on_atimers (0);
6761 int timeout_reduced_for_timers
= 0;
6763 /* If calling from keyboard input, do not quit
6764 since we want to return C-g as an input character.
6765 Otherwise, do pending quit if requested. */
6769 /* Exit now if the cell we're waiting for became non-nil. */
6770 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6773 /* Compute time from now till when time limit is up */
6774 /* Exit if already run out */
6775 if (time_limit
== -1)
6777 /* -1 specified for timeout means
6778 gobble output available now
6779 but don't wait at all. */
6781 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6783 else if (time_limit
|| microsecs
)
6785 EMACS_GET_TIME (timeout
);
6786 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6787 if (EMACS_TIME_NEG_P (timeout
))
6792 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6795 /* If our caller will not immediately handle keyboard events,
6796 run timer events directly.
6797 (Callers that will immediately read keyboard events
6798 call timer_delay on their own.) */
6799 if (NILP (wait_for_cell
))
6801 EMACS_TIME timer_delay
;
6805 int old_timers_run
= timers_run
;
6806 timer_delay
= timer_check ();
6807 if (timers_run
!= old_timers_run
&& do_display
)
6808 /* We must retry, since a timer may have requeued itself
6809 and that could alter the time delay. */
6810 redisplay_preserve_echo_area (14);
6814 while (!detect_input_pending ());
6816 /* If there is unread keyboard input, also return. */
6818 && requeued_events_pending_p ())
6821 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6823 EMACS_TIME difference
;
6824 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6825 if (EMACS_TIME_NEG_P (difference
))
6827 timeout
= timer_delay
;
6828 timeout_reduced_for_timers
= 1;
6833 /* Cause C-g and alarm signals to take immediate action,
6834 and cause input available signals to zero out timeout. */
6836 set_waiting_for_input (&timeout
);
6838 /* Wait till there is something to do. */
6840 if (! read_kbd
&& NILP (wait_for_cell
))
6841 FD_ZERO (&waitchannels
);
6843 FD_SET (0, &waitchannels
);
6845 /* If a frame has been newly mapped and needs updating,
6846 reprocess its display stuff. */
6847 if (frame_garbaged
&& do_display
)
6849 clear_waiting_for_input ();
6850 redisplay_preserve_echo_area (15);
6852 set_waiting_for_input (&timeout
);
6855 if (read_kbd
&& detect_input_pending ())
6858 FD_ZERO (&waitchannels
);
6861 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6866 /* Make C-g and alarm signals set flags again */
6867 clear_waiting_for_input ();
6869 /* If we woke up due to SIGWINCH, actually change size now. */
6870 do_pending_window_change (0);
6872 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6873 /* We waited the full specified time, so return now. */
6878 /* If the system call was interrupted, then go around the
6880 if (xerrno
== EINTR
)
6881 FD_ZERO (&waitchannels
);
6883 error ("select error: %s", emacs_strerror (xerrno
));
6886 /* Check for keyboard input */
6889 && detect_input_pending_run_timers (do_display
))
6891 swallow_events (do_display
);
6892 if (detect_input_pending_run_timers (do_display
))
6896 /* If there is unread keyboard input, also return. */
6898 && requeued_events_pending_p ())
6901 /* If wait_for_cell. check for keyboard input
6902 but don't run any timers.
6903 ??? (It seems wrong to me to check for keyboard
6904 input at all when wait_for_cell, but the code
6905 has been this way since July 1994.
6906 Try changing this after version 19.31.) */
6907 if (! NILP (wait_for_cell
)
6908 && detect_input_pending ())
6910 swallow_events (do_display
);
6911 if (detect_input_pending ())
6915 /* Exit now if the cell we're waiting for became non-nil. */
6916 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6925 #endif /* not subprocesses */
6927 /* The following functions are needed even if async subprocesses are
6928 not supported. Some of them are no-op stubs in that case. */
6930 /* Add DESC to the set of keyboard input descriptors. */
6933 add_keyboard_wait_descriptor (int desc
)
6935 #ifdef subprocesses /* actually means "not MSDOS" */
6936 FD_SET (desc
, &input_wait_mask
);
6937 FD_SET (desc
, &non_process_wait_mask
);
6938 if (desc
> max_input_desc
)
6939 max_input_desc
= desc
;
6943 /* From now on, do not expect DESC to give keyboard input. */
6946 delete_keyboard_wait_descriptor (int desc
)
6950 int lim
= max_input_desc
;
6952 FD_CLR (desc
, &input_wait_mask
);
6953 FD_CLR (desc
, &non_process_wait_mask
);
6955 if (desc
== max_input_desc
)
6956 for (fd
= 0; fd
< lim
; fd
++)
6957 if (FD_ISSET (fd
, &input_wait_mask
) || FD_ISSET (fd
, &write_mask
))
6958 max_input_desc
= fd
;
6962 /* Setup coding systems of PROCESS. */
6965 setup_process_coding_systems (Lisp_Object process
)
6968 struct Lisp_Process
*p
= XPROCESS (process
);
6970 int outch
= p
->outfd
;
6971 Lisp_Object coding_system
;
6973 if (inch
< 0 || outch
< 0)
6976 if (!proc_decode_coding_system
[inch
])
6977 proc_decode_coding_system
[inch
]
6978 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6979 coding_system
= p
->decode_coding_system
;
6980 if (! NILP (p
->filter
))
6982 else if (BUFFERP (p
->buffer
))
6984 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6985 coding_system
= raw_text_coding_system (coding_system
);
6987 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6989 if (!proc_encode_coding_system
[outch
])
6990 proc_encode_coding_system
[outch
]
6991 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6992 setup_coding_system (p
->encode_coding_system
,
6993 proc_encode_coding_system
[outch
]);
6997 /* Close all descriptors currently in use for communication
6998 with subprocess. This is used in a newly-forked subprocess
6999 to get rid of irrelevant descriptors. */
7002 close_process_descs (void)
7006 for (i
= 0; i
< MAXDESC
; i
++)
7008 Lisp_Object process
;
7009 process
= chan_process
[i
];
7010 if (!NILP (process
))
7012 int in
= XPROCESS (process
)->infd
;
7013 int out
= XPROCESS (process
)->outfd
;
7016 if (out
>= 0 && in
!= out
)
7023 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7024 doc
: /* Return the (or a) process associated with BUFFER.
7025 BUFFER may be a buffer or the name of one. */)
7026 (register Lisp_Object buffer
)
7029 register Lisp_Object buf
, tail
, proc
;
7031 if (NILP (buffer
)) return Qnil
;
7032 buf
= Fget_buffer (buffer
);
7033 if (NILP (buf
)) return Qnil
;
7035 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7037 proc
= Fcdr (XCAR (tail
));
7038 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
7041 #endif /* subprocesses */
7045 DEFUN ("process-inherit-coding-system-flag",
7046 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7048 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7049 If this flag is t, `buffer-file-coding-system' of the buffer
7050 associated with PROCESS will inherit the coding system used to decode
7051 the process output. */)
7052 (register Lisp_Object process
)
7055 CHECK_PROCESS (process
);
7056 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7058 /* Ignore the argument and return the value of
7059 inherit-process-coding-system. */
7060 return inherit_process_coding_system
? Qt
: Qnil
;
7064 /* Kill all processes associated with `buffer'.
7065 If `buffer' is nil, kill all processes */
7068 kill_buffer_processes (Lisp_Object buffer
)
7071 Lisp_Object tail
, proc
;
7073 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7075 proc
= XCDR (XCAR (tail
));
7077 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7079 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7080 Fdelete_process (proc
);
7081 else if (XPROCESS (proc
)->infd
>= 0)
7082 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7085 #else /* subprocesses */
7086 /* Since we have no subprocesses, this does nothing. */
7087 #endif /* subprocesses */
7090 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7091 Swaiting_for_user_input_p
, 0, 0, 0,
7092 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
7093 This is intended for use by asynchronous process output filters and sentinels. */)
7097 return (waiting_for_user_input_p
? Qt
: Qnil
);
7103 /* Stop reading input from keyboard sources. */
7106 hold_keyboard_input (void)
7111 /* Resume reading input from keyboard sources. */
7114 unhold_keyboard_input (void)
7119 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7122 kbd_on_hold_p (void)
7124 return kbd_is_on_hold
;
7128 /* Enumeration of and access to system processes a-la ps(1). */
7130 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7132 doc
: /* Return a list of numerical process IDs of all running processes.
7133 If this functionality is unsupported, return nil.
7135 See `process-attributes' for getting attributes of a process given its ID. */)
7138 return list_system_processes ();
7141 DEFUN ("process-attributes", Fprocess_attributes
,
7142 Sprocess_attributes
, 1, 1, 0,
7143 doc
: /* Return attributes of the process given by its PID, a number.
7145 Value is an alist where each element is a cons cell of the form
7149 If this functionality is unsupported, the value is nil.
7151 See `list-system-processes' for getting a list of all process IDs.
7153 The KEYs of the attributes that this function may return are listed
7154 below, together with the type of the associated VALUE (in parentheses).
7155 Not all platforms support all of these attributes; unsupported
7156 attributes will not appear in the returned alist.
7157 Unless explicitly indicated otherwise, numbers can have either
7158 integer or floating point values.
7160 euid -- Effective user User ID of the process (number)
7161 user -- User name corresponding to euid (string)
7162 egid -- Effective user Group ID of the process (number)
7163 group -- Group name corresponding to egid (string)
7164 comm -- Command name (executable name only) (string)
7165 state -- Process state code, such as "S", "R", or "T" (string)
7166 ppid -- Parent process ID (number)
7167 pgrp -- Process group ID (number)
7168 sess -- Session ID, i.e. process ID of session leader (number)
7169 ttname -- Controlling tty name (string)
7170 tpgid -- ID of foreground process group on the process's tty (number)
7171 minflt -- number of minor page faults (number)
7172 majflt -- number of major page faults (number)
7173 cminflt -- cumulative number of minor page faults (number)
7174 cmajflt -- cumulative number of major page faults (number)
7175 utime -- user time used by the process, in the (HIGH LOW USEC) format
7176 stime -- system time used by the process, in the (HIGH LOW USEC) format
7177 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7178 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7179 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7180 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7181 pri -- priority of the process (number)
7182 nice -- nice value of the process (number)
7183 thcount -- process thread count (number)
7184 start -- time the process started, in the (HIGH LOW USEC) format
7185 vsize -- virtual memory size of the process in KB's (number)
7186 rss -- resident set size of the process in KB's (number)
7187 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7188 pcpu -- percents of CPU time used by the process (floating-point number)
7189 pmem -- percents of total physical memory used by process's resident set
7190 (floating-point number)
7191 args -- command line which invoked the process (string). */)
7194 return system_process_attributes (pid
);
7204 inhibit_sentinels
= 0;
7208 if (! noninteractive
|| initialized
)
7210 signal (SIGCHLD
, sigchld_handler
);
7213 FD_ZERO (&input_wait_mask
);
7214 FD_ZERO (&non_keyboard_wait_mask
);
7215 FD_ZERO (&non_process_wait_mask
);
7216 FD_ZERO (&write_mask
);
7217 max_process_desc
= 0;
7218 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7220 #ifdef NON_BLOCKING_CONNECT
7221 FD_ZERO (&connect_wait_mask
);
7222 num_pending_connects
= 0;
7225 #ifdef ADAPTIVE_READ_BUFFERING
7226 process_output_delay_count
= 0;
7227 process_output_skip
= 0;
7230 /* Don't do this, it caused infinite select loops. The display
7231 method should call add_keyboard_wait_descriptor on stdin if it
7234 FD_SET (0, &input_wait_mask
);
7237 Vprocess_alist
= Qnil
;
7239 deleted_pid_list
= Qnil
;
7241 for (i
= 0; i
< MAXDESC
; i
++)
7243 chan_process
[i
] = Qnil
;
7244 proc_buffered_char
[i
] = -1;
7246 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7247 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7248 #ifdef DATAGRAM_SOCKETS
7249 memset (datagram_address
, 0, sizeof datagram_address
);
7253 Lisp_Object subfeatures
= Qnil
;
7254 const struct socket_options
*sopt
;
7256 #define ADD_SUBFEATURE(key, val) \
7257 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7259 #ifdef NON_BLOCKING_CONNECT
7260 ADD_SUBFEATURE (QCnowait
, Qt
);
7262 #ifdef DATAGRAM_SOCKETS
7263 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7265 #ifdef HAVE_SEQPACKET
7266 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7268 #ifdef HAVE_LOCAL_SOCKETS
7269 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7271 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7273 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7275 #ifdef HAVE_GETSOCKNAME
7276 ADD_SUBFEATURE (QCservice
, Qt
);
7278 #if defined (O_NONBLOCK) || defined (O_NDELAY)
7279 ADD_SUBFEATURE (QCserver
, Qt
);
7282 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7283 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7285 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7288 #if defined (DARWIN_OS)
7289 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7290 processes. As such, we only change the default value. */
7293 char const *release
= (STRINGP (Voperating_system_release
)
7294 ? SSDATA (Voperating_system_release
)
7296 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7297 && release
[1] == '.')) {
7298 Vprocess_connection_type
= Qnil
;
7302 #endif /* subprocesses */
7307 syms_of_process (void)
7311 DEFSYM (Qprocessp
, "processp");
7312 DEFSYM (Qrun
, "run");
7313 DEFSYM (Qstop
, "stop");
7314 DEFSYM (Qsignal
, "signal");
7316 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7319 Qexit = intern_c_string ("exit");
7320 staticpro (&Qexit); */
7322 DEFSYM (Qopen
, "open");
7323 DEFSYM (Qclosed
, "closed");
7324 DEFSYM (Qconnect
, "connect");
7325 DEFSYM (Qfailed
, "failed");
7326 DEFSYM (Qlisten
, "listen");
7327 DEFSYM (Qlocal
, "local");
7328 DEFSYM (Qipv4
, "ipv4");
7330 DEFSYM (Qipv6
, "ipv6");
7332 DEFSYM (Qdatagram
, "datagram");
7333 DEFSYM (Qseqpacket
, "seqpacket");
7335 DEFSYM (QCport
, ":port");
7336 DEFSYM (QCspeed
, ":speed");
7337 DEFSYM (QCprocess
, ":process");
7339 DEFSYM (QCbytesize
, ":bytesize");
7340 DEFSYM (QCstopbits
, ":stopbits");
7341 DEFSYM (QCparity
, ":parity");
7342 DEFSYM (Qodd
, "odd");
7343 DEFSYM (Qeven
, "even");
7344 DEFSYM (QCflowcontrol
, ":flowcontrol");
7347 DEFSYM (QCsummary
, ":summary");
7349 DEFSYM (Qreal
, "real");
7350 DEFSYM (Qnetwork
, "network");
7351 DEFSYM (Qserial
, "serial");
7352 DEFSYM (QCbuffer
, ":buffer");
7353 DEFSYM (QChost
, ":host");
7354 DEFSYM (QCservice
, ":service");
7355 DEFSYM (QClocal
, ":local");
7356 DEFSYM (QCremote
, ":remote");
7357 DEFSYM (QCcoding
, ":coding");
7358 DEFSYM (QCserver
, ":server");
7359 DEFSYM (QCnowait
, ":nowait");
7360 DEFSYM (QCsentinel
, ":sentinel");
7361 DEFSYM (QClog
, ":log");
7362 DEFSYM (QCnoquery
, ":noquery");
7363 DEFSYM (QCstop
, ":stop");
7364 DEFSYM (QCoptions
, ":options");
7365 DEFSYM (QCplist
, ":plist");
7367 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7369 staticpro (&Vprocess_alist
);
7371 staticpro (&deleted_pid_list
);
7374 #endif /* subprocesses */
7376 DEFSYM (QCname
, ":name");
7377 DEFSYM (QCtype
, ":type");
7379 DEFSYM (Qeuid
, "euid");
7380 DEFSYM (Qegid
, "egid");
7381 DEFSYM (Quser
, "user");
7382 DEFSYM (Qgroup
, "group");
7383 DEFSYM (Qcomm
, "comm");
7384 DEFSYM (Qstate
, "state");
7385 DEFSYM (Qppid
, "ppid");
7386 DEFSYM (Qpgrp
, "pgrp");
7387 DEFSYM (Qsess
, "sess");
7388 DEFSYM (Qttname
, "ttname");
7389 DEFSYM (Qtpgid
, "tpgid");
7390 DEFSYM (Qminflt
, "minflt");
7391 DEFSYM (Qmajflt
, "majflt");
7392 DEFSYM (Qcminflt
, "cminflt");
7393 DEFSYM (Qcmajflt
, "cmajflt");
7394 DEFSYM (Qutime
, "utime");
7395 DEFSYM (Qstime
, "stime");
7396 DEFSYM (Qtime
, "time");
7397 DEFSYM (Qcutime
, "cutime");
7398 DEFSYM (Qcstime
, "cstime");
7399 DEFSYM (Qctime
, "ctime");
7400 DEFSYM (Qpri
, "pri");
7401 DEFSYM (Qnice
, "nice");
7402 DEFSYM (Qthcount
, "thcount");
7403 DEFSYM (Qstart
, "start");
7404 DEFSYM (Qvsize
, "vsize");
7405 DEFSYM (Qrss
, "rss");
7406 DEFSYM (Qetime
, "etime");
7407 DEFSYM (Qpcpu
, "pcpu");
7408 DEFSYM (Qpmem
, "pmem");
7409 DEFSYM (Qargs
, "args");
7411 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7412 doc
: /* *Non-nil means delete processes immediately when they exit.
7413 A value of nil means don't delete them until `list-processes' is run. */);
7415 delete_exited_processes
= 1;
7418 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7419 doc
: /* Control type of device used to communicate with subprocesses.
7420 Values are nil to use a pipe, or t or `pty' to use a pty.
7421 The value has no effect if the system has no ptys or if all ptys are busy:
7422 then a pipe is used in any case.
7423 The value takes effect when `start-process' is called. */);
7424 Vprocess_connection_type
= Qt
;
7426 #ifdef ADAPTIVE_READ_BUFFERING
7427 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7428 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7429 On some systems, when Emacs reads the output from a subprocess, the output data
7430 is read in very small blocks, potentially resulting in very poor performance.
7431 This behavior can be remedied to some extent by setting this variable to a
7432 non-nil value, as it will automatically delay reading from such processes, to
7433 allow them to produce more output before Emacs tries to read it.
7434 If the value is t, the delay is reset after each write to the process; any other
7435 non-nil value means that the delay is not reset on write.
7436 The variable takes effect when `start-process' is called. */);
7437 Vprocess_adaptive_read_buffering
= Qt
;
7440 defsubr (&Sprocessp
);
7441 defsubr (&Sget_process
);
7442 defsubr (&Sdelete_process
);
7443 defsubr (&Sprocess_status
);
7444 defsubr (&Sprocess_exit_status
);
7445 defsubr (&Sprocess_id
);
7446 defsubr (&Sprocess_name
);
7447 defsubr (&Sprocess_tty_name
);
7448 defsubr (&Sprocess_command
);
7449 defsubr (&Sset_process_buffer
);
7450 defsubr (&Sprocess_buffer
);
7451 defsubr (&Sprocess_mark
);
7452 defsubr (&Sset_process_filter
);
7453 defsubr (&Sprocess_filter
);
7454 defsubr (&Sset_process_sentinel
);
7455 defsubr (&Sprocess_sentinel
);
7456 defsubr (&Sset_process_window_size
);
7457 defsubr (&Sset_process_inherit_coding_system_flag
);
7458 defsubr (&Sset_process_query_on_exit_flag
);
7459 defsubr (&Sprocess_query_on_exit_flag
);
7460 defsubr (&Sprocess_contact
);
7461 defsubr (&Sprocess_plist
);
7462 defsubr (&Sset_process_plist
);
7463 defsubr (&Sprocess_list
);
7464 defsubr (&Sstart_process
);
7465 defsubr (&Sserial_process_configure
);
7466 defsubr (&Smake_serial_process
);
7467 defsubr (&Sset_network_process_option
);
7468 defsubr (&Smake_network_process
);
7469 defsubr (&Sformat_network_address
);
7470 #if defined (HAVE_NET_IF_H)
7472 defsubr (&Snetwork_interface_list
);
7474 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
7475 defsubr (&Snetwork_interface_info
);
7477 #endif /* defined (HAVE_NET_IF_H) */
7478 #ifdef DATAGRAM_SOCKETS
7479 defsubr (&Sprocess_datagram_address
);
7480 defsubr (&Sset_process_datagram_address
);
7482 defsubr (&Saccept_process_output
);
7483 defsubr (&Sprocess_send_region
);
7484 defsubr (&Sprocess_send_string
);
7485 defsubr (&Sinterrupt_process
);
7486 defsubr (&Skill_process
);
7487 defsubr (&Squit_process
);
7488 defsubr (&Sstop_process
);
7489 defsubr (&Scontinue_process
);
7490 defsubr (&Sprocess_running_child_p
);
7491 defsubr (&Sprocess_send_eof
);
7492 defsubr (&Ssignal_process
);
7493 defsubr (&Swaiting_for_user_input_p
);
7494 defsubr (&Sprocess_type
);
7495 defsubr (&Sset_process_coding_system
);
7496 defsubr (&Sprocess_coding_system
);
7497 defsubr (&Sset_process_filter_multibyte
);
7498 defsubr (&Sprocess_filter_multibyte_p
);
7500 #endif /* subprocesses */
7502 defsubr (&Sget_buffer_process
);
7503 defsubr (&Sprocess_inherit_coding_system_flag
);
7504 defsubr (&Slist_system_processes
);
7505 defsubr (&Sprocess_attributes
);