1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2013 Free Software
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/>. */
24 #define PROCESS_INLINE EXTERN_INLINE
28 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
36 /* Only MS-DOS does not define `subprocesses'. */
39 #include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <arpa/inet.h>
44 /* Are local (unix) sockets supported? */
45 #if defined (HAVE_SYS_UN_H)
46 #if !defined (AF_LOCAL) && defined (AF_UNIX)
47 #define AF_LOCAL AF_UNIX
50 #define HAVE_LOCAL_SOCKETS
55 #include <sys/ioctl.h>
56 #if defined (HAVE_NET_IF_H)
58 #endif /* HAVE_NET_IF_H */
60 #if defined (HAVE_IFADDRS_H)
61 /* Must be after net/if.h */
64 /* We only use structs from this header when we use getifaddrs. */
65 #if defined (HAVE_NET_IF_DL_H)
66 #include <net/if_dl.h>
76 # include <sys/stream.h>
77 # include <sys/stropts.h>
81 #include <arpa/nameser.h>
97 #endif /* subprocesses */
103 #include "character.h"
108 #include "termhooks.h"
109 #include "termopts.h"
110 #include "commands.h"
111 #include "keyboard.h"
112 #include "blockinput.h"
113 #include "dispextern.h"
114 #include "composite.h"
116 #include "sysselect.h"
117 #include "syssignal.h"
123 #ifdef HAVE_WINDOW_SYSTEM
125 #endif /* HAVE_WINDOW_SYSTEM */
128 #include "xgselect.h"
135 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
136 EMACS_TIME
*, void *);
140 # define SOCK_CLOEXEC 0
145 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
148 close_on_exec (int fd
)
151 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
156 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
158 return close_on_exec (accept (sockfd
, addr
, addrlen
));
162 process_socket (int domain
, int type
, int protocol
)
164 return close_on_exec (socket (domain
, type
, protocol
));
167 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
170 /* Work around GCC 4.7.0 bug with strict overflow checking; see
171 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
172 These lines can be removed once the GCC bug is fixed. */
173 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
174 # pragma GCC diagnostic ignored "-Wstrict-overflow"
177 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
178 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
179 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
180 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
181 Lisp_Object QCname
, QCtype
;
183 /* True if keyboard input is on hold, zero otherwise. */
185 static bool kbd_is_on_hold
;
187 /* Nonzero means don't run process sentinels. This is used
189 bool inhibit_sentinels
;
193 Lisp_Object Qprocessp
;
194 static Lisp_Object Qrun
, Qstop
, Qsignal
;
195 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
197 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
198 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
200 static Lisp_Object Qipv6
;
202 static Lisp_Object QCport
, QCprocess
;
204 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
205 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
206 static Lisp_Object QCbuffer
, QChost
, QCservice
;
207 static Lisp_Object QClocal
, QCremote
, QCcoding
;
208 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
209 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
210 static Lisp_Object Qlast_nonmenu_event
;
211 static Lisp_Object Qinternal_default_process_sentinel
;
212 static Lisp_Object Qinternal_default_process_filter
;
214 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
215 #define NETCONN1_P(p) (EQ (p->type, Qnetwork))
216 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
217 #define SERIALCONN1_P(p) (EQ (p->type, Qserial))
219 /* Number of events of change of status of a process. */
220 static EMACS_INT process_tick
;
221 /* Number of events for which the user or sentinel has been notified. */
222 static EMACS_INT update_tick
;
224 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
226 /* Only W32 has this, it really means that select can't take write mask. */
227 #ifdef BROKEN_NON_BLOCKING_CONNECT
228 #undef NON_BLOCKING_CONNECT
229 #define SELECT_CANT_DO_WRITE_MASK
231 #ifndef NON_BLOCKING_CONNECT
233 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
234 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
235 #define NON_BLOCKING_CONNECT
236 #endif /* EWOULDBLOCK || EINPROGRESS */
237 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
238 #endif /* HAVE_SELECT */
239 #endif /* NON_BLOCKING_CONNECT */
240 #endif /* BROKEN_NON_BLOCKING_CONNECT */
242 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
243 this system. We need to read full packets, so we need a
244 "non-destructive" select. So we require either native select,
245 or emulation of select using FIONREAD. */
247 #ifndef BROKEN_DATAGRAM_SOCKETS
248 # if defined HAVE_SELECT || defined USABLE_FIONREAD
249 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
250 # define DATAGRAM_SOCKETS
255 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
256 # define HAVE_SEQPACKET
259 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
260 #define ADAPTIVE_READ_BUFFERING
263 #ifdef ADAPTIVE_READ_BUFFERING
264 #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100)
265 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
266 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
268 /* Number of processes which have a non-zero read_output_delay,
269 and therefore might be delayed for adaptive read buffering. */
271 static int process_output_delay_count
;
273 /* True if any process has non-nil read_output_skip. */
275 static bool process_output_skip
;
278 #define process_output_delay_count 0
281 static void create_process (Lisp_Object
, char **, Lisp_Object
);
283 static bool keyboard_bit_set (SELECT_TYPE
*);
285 static void deactivate_process (Lisp_Object
);
286 static void status_notify (struct Lisp_Process
*);
287 static int read_process_output (Lisp_Object
, int);
288 static void handle_child_signal (int);
289 static void create_pty (Lisp_Object
);
291 /* If we support a window system, turn on the code to poll periodically
292 to detect C-g. It isn't actually used when doing interrupt input. */
293 #ifdef HAVE_WINDOW_SYSTEM
294 #define POLL_FOR_INPUT
297 static Lisp_Object
get_process (register Lisp_Object name
);
298 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
300 /* Mask of bits indicating the descriptors that we wait for input on. */
302 static SELECT_TYPE input_wait_mask
;
304 /* Mask that excludes keyboard input descriptor(s). */
306 static SELECT_TYPE non_keyboard_wait_mask
;
308 /* Mask that excludes process input descriptor(s). */
310 static SELECT_TYPE non_process_wait_mask
;
312 /* Mask for selecting for write. */
314 static SELECT_TYPE write_mask
;
316 #ifdef NON_BLOCKING_CONNECT
317 /* Mask of bits indicating the descriptors that we wait for connect to
318 complete on. Once they complete, they are removed from this mask
319 and added to the input_wait_mask and non_keyboard_wait_mask. */
321 static SELECT_TYPE connect_wait_mask
;
323 /* Number of bits set in connect_wait_mask. */
324 static int num_pending_connects
;
325 #endif /* NON_BLOCKING_CONNECT */
327 /* The largest descriptor currently in use for a process object; -1 if none. */
328 static int max_process_desc
;
330 /* The largest descriptor currently in use for input; -1 if none. */
331 static int max_input_desc
;
333 /* Indexed by descriptor, gives the process (if any) for that descriptor */
334 static Lisp_Object chan_process
[MAXDESC
];
336 /* Alist of elements (NAME . PROCESS) */
337 static Lisp_Object Vprocess_alist
;
339 /* Buffered-ahead input char from process, indexed by channel.
340 -1 means empty (no char is buffered).
341 Used on sys V where the only way to tell if there is any
342 output from the process is to read at least one char.
343 Always -1 on systems that support FIONREAD. */
345 static int proc_buffered_char
[MAXDESC
];
347 /* Table of `struct coding-system' for each process. */
348 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
349 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
351 #ifdef DATAGRAM_SOCKETS
352 /* Table of `partner address' for datagram sockets. */
353 static struct sockaddr_and_len
{
356 } datagram_address
[MAXDESC
];
357 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
358 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
360 #define DATAGRAM_CHAN_P(chan) (0)
361 #define DATAGRAM_CONN_P(proc) (0)
364 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
365 a `for' loop which iterates over processes from Vprocess_alist. */
367 #define FOR_EACH_PROCESS(list_var, proc_var) \
368 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
370 /* These setters are used only in this file, so they can be private. */
372 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
377 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
382 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
384 p
->decode_coding_system
= val
;
387 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
389 p
->decoding_buf
= val
;
392 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
394 p
->encode_coding_system
= val
;
397 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
399 p
->encoding_buf
= val
;
402 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
404 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
407 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
412 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
417 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
422 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
427 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
429 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
432 pset_status (struct Lisp_Process
*p
, Lisp_Object val
)
437 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
442 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
447 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
449 p
->write_queue
= val
;
454 static struct fd_callback_data
460 int condition
; /* mask of the defines above. */
461 } fd_callback_info
[MAXDESC
];
464 /* Add a file descriptor FD to be monitored for when read is possible.
465 When read is possible, call FUNC with argument DATA. */
468 add_read_fd (int fd
, fd_callback func
, void *data
)
470 eassert (fd
< MAXDESC
);
471 add_keyboard_wait_descriptor (fd
);
473 fd_callback_info
[fd
].func
= func
;
474 fd_callback_info
[fd
].data
= data
;
475 fd_callback_info
[fd
].condition
|= FOR_READ
;
478 /* Stop monitoring file descriptor FD for when read is possible. */
481 delete_read_fd (int fd
)
483 eassert (fd
< MAXDESC
);
484 delete_keyboard_wait_descriptor (fd
);
486 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
487 if (fd_callback_info
[fd
].condition
== 0)
489 fd_callback_info
[fd
].func
= 0;
490 fd_callback_info
[fd
].data
= 0;
494 /* Add a file descriptor FD to be monitored for when write is possible.
495 When write is possible, call FUNC with argument DATA. */
498 add_write_fd (int fd
, fd_callback func
, void *data
)
500 eassert (fd
< MAXDESC
);
501 FD_SET (fd
, &write_mask
);
502 if (fd
> max_input_desc
)
505 fd_callback_info
[fd
].func
= func
;
506 fd_callback_info
[fd
].data
= data
;
507 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
510 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
513 delete_input_desc (int fd
)
515 if (fd
== max_input_desc
)
519 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
520 || FD_ISSET (fd
, &write_mask
)));
526 /* Stop monitoring file descriptor FD for when write is possible. */
529 delete_write_fd (int fd
)
531 eassert (fd
< MAXDESC
);
532 FD_CLR (fd
, &write_mask
);
533 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
534 if (fd_callback_info
[fd
].condition
== 0)
536 fd_callback_info
[fd
].func
= 0;
537 fd_callback_info
[fd
].data
= 0;
538 delete_input_desc (fd
);
543 /* Compute the Lisp form of the process status, p->status, from
544 the numeric status that was returned by `wait'. */
546 static Lisp_Object
status_convert (int);
549 update_status (struct Lisp_Process
*p
)
551 eassert (p
->raw_status_new
);
552 pset_status (p
, status_convert (p
->raw_status
));
553 p
->raw_status_new
= 0;
556 /* Convert a process status word in Unix format to
557 the list that we use internally. */
560 status_convert (int w
)
563 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
564 else if (WIFEXITED (w
))
565 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
566 WCOREDUMP (w
) ? Qt
: Qnil
));
567 else if (WIFSIGNALED (w
))
568 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
569 WCOREDUMP (w
) ? Qt
: Qnil
));
574 /* Given a status-list, extract the three pieces of information
575 and store them individually through the three pointers. */
578 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
592 *code
= XFASTINT (XCAR (tem
));
594 *coredump
= !NILP (tem
);
598 /* Return a string describing a process status list. */
601 status_message (struct Lisp_Process
*p
)
603 Lisp_Object status
= p
->status
;
607 Lisp_Object string
, string2
;
609 decode_status (status
, &symbol
, &code
, &coredump
);
611 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
614 synchronize_system_messages_locale ();
615 signame
= strsignal (code
);
617 string
= build_string ("unknown");
622 string
= build_unibyte_string (signame
);
623 if (! NILP (Vlocale_coding_system
))
624 string
= (code_convert_string_norecord
625 (string
, Vlocale_coding_system
, 0));
626 c1
= STRING_CHAR (SDATA (string
));
629 Faset (string
, make_number (0), make_number (c2
));
631 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
632 return concat2 (string
, string2
);
634 else if (EQ (symbol
, Qexit
))
637 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
639 return build_string ("finished\n");
640 string
= Fnumber_to_string (make_number (code
));
641 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
642 return concat3 (build_string ("exited abnormally with code "),
645 else if (EQ (symbol
, Qfailed
))
647 string
= Fnumber_to_string (make_number (code
));
648 string2
= build_string ("\n");
649 return concat3 (build_string ("failed with code "),
653 return Fcopy_sequence (Fsymbol_name (symbol
));
656 enum { PTY_NAME_SIZE
= 24 };
658 /* Open an available pty, returning a file descriptor.
659 Store into PTY_NAME the file name of the terminal corresponding to the pty.
660 Return -1 on failure. */
663 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
672 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
673 for (i
= 0; i
< 16; i
++)
676 #ifdef PTY_NAME_SPRINTF
679 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
680 #endif /* no PTY_NAME_SPRINTF */
684 #else /* no PTY_OPEN */
685 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
686 #endif /* no PTY_OPEN */
690 /* check to make certain that both sides are available
691 this avoids a nasty yet stupid bug in rlogins */
692 #ifdef PTY_TTY_NAME_SPRINTF
695 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
696 #endif /* no PTY_TTY_NAME_SPRINTF */
697 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
710 #endif /* HAVE_PTYS */
715 make_process (Lisp_Object name
)
717 register Lisp_Object val
, tem
, name1
;
718 register struct Lisp_Process
*p
;
719 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
722 p
= allocate_process ();
723 /* Initialize Lisp data. Note that allocate_process initializes all
724 Lisp data to nil, so do it only for slots which should not be nil. */
725 pset_status (p
, Qrun
);
726 pset_mark (p
, Fmake_marker ());
728 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
729 non-Lisp data, so do it only for slots which should not be zero. */
732 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
736 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
739 /* If name is already in use, modify it until it is unused. */
744 tem
= Fget_process (name1
);
745 if (NILP (tem
)) break;
746 name1
= concat2 (name
, make_formatted_string (suffix
, "<%"pMd
">", i
));
750 pset_sentinel (p
, Qinternal_default_process_sentinel
);
751 pset_filter (p
, Qinternal_default_process_filter
);
752 XSETPROCESS (val
, p
);
753 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
758 remove_process (register Lisp_Object proc
)
760 register Lisp_Object pair
;
762 pair
= Frassq (proc
, Vprocess_alist
);
763 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
765 deactivate_process (proc
);
769 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
770 doc
: /* Return t if OBJECT is a process. */)
773 return PROCESSP (object
) ? Qt
: Qnil
;
776 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
777 doc
: /* Return the process named NAME, or nil if there is none. */)
778 (register Lisp_Object name
)
783 return Fcdr (Fassoc (name
, Vprocess_alist
));
786 /* This is how commands for the user decode process arguments. It
787 accepts a process, a process name, a buffer, a buffer name, or nil.
788 Buffers denote the first process in the buffer, and nil denotes the
792 get_process (register Lisp_Object name
)
794 register Lisp_Object proc
, obj
;
797 obj
= Fget_process (name
);
799 obj
= Fget_buffer (name
);
801 error ("Process %s does not exist", SDATA (name
));
803 else if (NILP (name
))
804 obj
= Fcurrent_buffer ();
808 /* Now obj should be either a buffer object or a process object.
812 proc
= Fget_buffer_process (obj
);
814 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
825 /* Fdelete_process promises to immediately forget about the process, but in
826 reality, Emacs needs to remember those processes until they have been
827 treated by the SIGCHLD handler and waitpid has been invoked on them;
828 otherwise they might fill up the kernel's process table.
830 Some processes created by call-process are also put onto this list.
832 Members of this list are (process-ID . filename) pairs. The
833 process-ID is a number; the filename, if a string, is a file that
834 needs to be removed after the process exits. */
835 static Lisp_Object deleted_pid_list
;
838 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
840 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
841 /* GC treated elements set to nil. */
842 Fdelq (Qnil
, deleted_pid_list
));
846 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
847 doc
: /* Delete PROCESS: kill it and forget about it immediately.
848 PROCESS may be a process, a buffer, the name of a process or buffer, or
849 nil, indicating the current buffer's process. */)
850 (register Lisp_Object process
)
852 register struct Lisp_Process
*p
;
854 process
= get_process (process
);
855 p
= XPROCESS (process
);
857 p
->raw_status_new
= 0;
858 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
860 pset_status (p
, list2 (Qexit
, make_number (0)));
861 p
->tick
= ++process_tick
;
863 redisplay_preserve_echo_area (13);
868 record_kill_process (p
, Qnil
);
872 /* Update P's status, since record_kill_process will make the
873 SIGCHLD handler update deleted_pid_list, not *P. */
875 if (p
->raw_status_new
)
877 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
878 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
879 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
881 p
->tick
= ++process_tick
;
883 redisplay_preserve_echo_area (13);
886 remove_process (process
);
890 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
891 doc
: /* Return the status of PROCESS.
892 The returned value is one of the following symbols:
893 run -- for a process that is running.
894 stop -- for a process stopped but continuable.
895 exit -- for a process that has exited.
896 signal -- for a process that has got a fatal signal.
897 open -- for a network stream connection that is open.
898 listen -- for a network stream server that is listening.
899 closed -- for a network stream connection that is closed.
900 connect -- when waiting for a non-blocking connection to complete.
901 failed -- when a non-blocking connection has failed.
902 nil -- if arg is a process name and no such process exists.
903 PROCESS may be a process, a buffer, the name of a process, or
904 nil, indicating the current buffer's process. */)
905 (register Lisp_Object process
)
907 register struct Lisp_Process
*p
;
908 register Lisp_Object status
;
910 if (STRINGP (process
))
911 process
= Fget_process (process
);
913 process
= get_process (process
);
918 p
= XPROCESS (process
);
919 if (p
->raw_status_new
)
923 status
= XCAR (status
);
924 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
926 if (EQ (status
, Qexit
))
928 else if (EQ (p
->command
, Qt
))
930 else if (EQ (status
, Qrun
))
936 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
938 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
939 If PROCESS has not yet exited or died, return 0. */)
940 (register Lisp_Object process
)
942 CHECK_PROCESS (process
);
943 if (XPROCESS (process
)->raw_status_new
)
944 update_status (XPROCESS (process
));
945 if (CONSP (XPROCESS (process
)->status
))
946 return XCAR (XCDR (XPROCESS (process
)->status
));
947 return make_number (0);
950 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
951 doc
: /* Return the process id of PROCESS.
952 This is the pid of the external process which PROCESS uses or talks to.
953 For a network connection, this value is nil. */)
954 (register Lisp_Object process
)
958 CHECK_PROCESS (process
);
959 pid
= XPROCESS (process
)->pid
;
960 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
963 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
964 doc
: /* Return the name of PROCESS, as a string.
965 This is the name of the program invoked in PROCESS,
966 possibly modified to make it unique among process names. */)
967 (register Lisp_Object process
)
969 CHECK_PROCESS (process
);
970 return XPROCESS (process
)->name
;
973 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
974 doc
: /* Return the command that was executed to start PROCESS.
975 This is a list of strings, the first string being the program executed
976 and the rest of the strings being the arguments given to it.
977 For a network or serial process, this is nil (process is running) or t
978 \(process is stopped). */)
979 (register Lisp_Object process
)
981 CHECK_PROCESS (process
);
982 return XPROCESS (process
)->command
;
985 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
986 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
987 This is the terminal that the process itself reads and writes on,
988 not the name of the pty that Emacs uses to talk with that terminal. */)
989 (register Lisp_Object process
)
991 CHECK_PROCESS (process
);
992 return XPROCESS (process
)->tty_name
;
995 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
997 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
999 (register Lisp_Object process
, Lisp_Object buffer
)
1001 struct Lisp_Process
*p
;
1003 CHECK_PROCESS (process
);
1005 CHECK_BUFFER (buffer
);
1006 p
= XPROCESS (process
);
1007 pset_buffer (p
, buffer
);
1008 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1009 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1010 setup_process_coding_systems (process
);
1014 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1016 doc
: /* Return the buffer PROCESS is associated with.
1017 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
1018 (register Lisp_Object process
)
1020 CHECK_PROCESS (process
);
1021 return XPROCESS (process
)->buffer
;
1024 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1026 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1027 (register Lisp_Object process
)
1029 CHECK_PROCESS (process
);
1030 return XPROCESS (process
)->mark
;
1033 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1035 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1036 A value of t means stop accepting output from the process.
1038 When a process has a non-default filter, its buffer is not used for output.
1039 Instead, each time it does output, the entire string of output is
1040 passed to the filter.
1042 The filter gets two arguments: the process and the string of output.
1043 The string argument is normally a multibyte string, except:
1044 - if the process' input coding system is no-conversion or raw-text,
1045 it is a unibyte string (the non-converted input), or else
1046 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1047 string (the result of converting the decoded input multibyte
1048 string to unibyte with `string-make-unibyte'). */)
1049 (register Lisp_Object process
, Lisp_Object filter
)
1051 struct Lisp_Process
*p
;
1053 CHECK_PROCESS (process
);
1054 p
= XPROCESS (process
);
1056 /* Don't signal an error if the process' input file descriptor
1057 is closed. This could make debugging Lisp more difficult,
1058 for example when doing something like
1060 (setq process (start-process ...))
1062 (set-process-filter process ...) */
1065 filter
= Qinternal_default_process_filter
;
1069 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1071 FD_CLR (p
->infd
, &input_wait_mask
);
1072 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1074 else if (EQ (p
->filter
, Qt
)
1075 /* Network or serial process not stopped: */
1076 && !EQ (p
->command
, Qt
))
1078 FD_SET (p
->infd
, &input_wait_mask
);
1079 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1083 pset_filter (p
, filter
);
1084 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1085 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1086 setup_process_coding_systems (process
);
1090 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1092 doc
: /* Return the filter function of PROCESS.
1093 See `set-process-filter' for more info on filter functions. */)
1094 (register Lisp_Object process
)
1096 CHECK_PROCESS (process
);
1097 return XPROCESS (process
)->filter
;
1100 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1102 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1103 The sentinel is called as a function when the process changes state.
1104 It gets two arguments: the process, and a string describing the change. */)
1105 (register Lisp_Object process
, Lisp_Object sentinel
)
1107 struct Lisp_Process
*p
;
1109 CHECK_PROCESS (process
);
1110 p
= XPROCESS (process
);
1112 if (NILP (sentinel
))
1113 sentinel
= Qinternal_default_process_sentinel
;
1115 pset_sentinel (p
, sentinel
);
1116 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1117 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1121 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1123 doc
: /* Return the sentinel of PROCESS.
1124 See `set-process-sentinel' for more info on sentinels. */)
1125 (register Lisp_Object process
)
1127 CHECK_PROCESS (process
);
1128 return XPROCESS (process
)->sentinel
;
1131 DEFUN ("set-process-window-size", Fset_process_window_size
,
1132 Sset_process_window_size
, 3, 3, 0,
1133 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1134 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1136 CHECK_PROCESS (process
);
1137 CHECK_RANGED_INTEGER (height
, 0, INT_MAX
);
1138 CHECK_RANGED_INTEGER (width
, 0, INT_MAX
);
1140 if (XPROCESS (process
)->infd
< 0
1141 || set_window_size (XPROCESS (process
)->infd
,
1142 XINT (height
), XINT (width
)) <= 0)
1148 DEFUN ("set-process-inherit-coding-system-flag",
1149 Fset_process_inherit_coding_system_flag
,
1150 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1151 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1152 If the second argument FLAG is non-nil, then the variable
1153 `buffer-file-coding-system' of the buffer associated with PROCESS
1154 will be bound to the value of the coding system used to decode
1157 This is useful when the coding system specified for the process buffer
1158 leaves either the character code conversion or the end-of-line conversion
1159 unspecified, or if the coding system used to decode the process output
1160 is more appropriate for saving the process buffer.
1162 Binding the variable `inherit-process-coding-system' to non-nil before
1163 starting the process is an alternative way of setting the inherit flag
1164 for the process which will run.
1166 This function returns FLAG. */)
1167 (register Lisp_Object process
, Lisp_Object flag
)
1169 CHECK_PROCESS (process
);
1170 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1174 DEFUN ("set-process-query-on-exit-flag",
1175 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1177 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1178 If the second argument FLAG is non-nil, Emacs will query the user before
1179 exiting or killing a buffer if PROCESS is running. This function
1181 (register Lisp_Object process
, Lisp_Object flag
)
1183 CHECK_PROCESS (process
);
1184 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1188 DEFUN ("process-query-on-exit-flag",
1189 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1191 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1192 (register Lisp_Object process
)
1194 CHECK_PROCESS (process
);
1195 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1198 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1200 doc
: /* Return the contact info of PROCESS; t for a real child.
1201 For a network or serial connection, the value depends on the optional
1202 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1203 SERVICE) for a network connection or (PORT SPEED) for a serial
1204 connection. If KEY is t, the complete contact information for the
1205 connection is returned, else the specific value for the keyword KEY is
1206 returned. See `make-network-process' or `make-serial-process' for a
1207 list of keywords. */)
1208 (register Lisp_Object process
, Lisp_Object key
)
1210 Lisp_Object contact
;
1212 CHECK_PROCESS (process
);
1213 contact
= XPROCESS (process
)->childp
;
1215 #ifdef DATAGRAM_SOCKETS
1216 if (DATAGRAM_CONN_P (process
)
1217 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1218 contact
= Fplist_put (contact
, QCremote
,
1219 Fprocess_datagram_address (process
));
1222 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1224 if (NILP (key
) && NETCONN_P (process
))
1225 return list2 (Fplist_get (contact
, QChost
),
1226 Fplist_get (contact
, QCservice
));
1227 if (NILP (key
) && SERIALCONN_P (process
))
1228 return list2 (Fplist_get (contact
, QCport
),
1229 Fplist_get (contact
, QCspeed
));
1230 return Fplist_get (contact
, key
);
1233 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1235 doc
: /* Return the plist of PROCESS. */)
1236 (register Lisp_Object process
)
1238 CHECK_PROCESS (process
);
1239 return XPROCESS (process
)->plist
;
1242 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1244 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1245 (register Lisp_Object process
, Lisp_Object plist
)
1247 CHECK_PROCESS (process
);
1250 pset_plist (XPROCESS (process
), plist
);
1254 #if 0 /* Turned off because we don't currently record this info
1255 in the process. Perhaps add it. */
1256 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1257 doc
: /* Return the connection type of PROCESS.
1258 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1259 a socket connection. */)
1260 (Lisp_Object process
)
1262 return XPROCESS (process
)->type
;
1266 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1267 doc
: /* Return the connection type of PROCESS.
1268 The value is either the symbol `real', `network', or `serial'.
1269 PROCESS may be a process, a buffer, the name of a process or buffer, or
1270 nil, indicating the current buffer's process. */)
1271 (Lisp_Object process
)
1274 proc
= get_process (process
);
1275 return XPROCESS (proc
)->type
;
1278 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1280 doc
: /* Convert network ADDRESS from internal format to a string.
1281 A 4 or 5 element vector represents an IPv4 address (with port number).
1282 An 8 or 9 element vector represents an IPv6 address (with port number).
1283 If optional second argument OMIT-PORT is non-nil, don't include a port
1284 number in the string, even when present in ADDRESS.
1285 Returns nil if format of ADDRESS is invalid. */)
1286 (Lisp_Object address
, Lisp_Object omit_port
)
1291 if (STRINGP (address
)) /* AF_LOCAL */
1294 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1296 register struct Lisp_Vector
*p
= XVECTOR (address
);
1297 ptrdiff_t size
= p
->header
.size
;
1298 Lisp_Object args
[10];
1301 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1303 args
[0] = build_string ("%d.%d.%d.%d");
1308 args
[0] = build_string ("%d.%d.%d.%d:%d");
1311 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1313 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1318 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1324 for (i
= 0; i
< nargs
; i
++)
1326 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1329 if (nargs
<= 5 /* IPv4 */
1330 && i
< 4 /* host, not port */
1331 && XINT (p
->contents
[i
]) > 255)
1334 args
[i
+1] = p
->contents
[i
];
1337 return Fformat (nargs
+1, args
);
1340 if (CONSP (address
))
1342 Lisp_Object args
[2];
1343 args
[0] = build_string ("<Family %d>");
1344 args
[1] = Fcar (address
);
1345 return Fformat (2, args
);
1351 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1352 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1355 return Fmapcar (Qcdr
, Vprocess_alist
);
1358 /* Starting asynchronous inferior processes. */
1360 static void start_process_unwind (Lisp_Object proc
);
1362 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1363 doc
: /* Start a program in a subprocess. Return the process object for it.
1364 NAME is name for process. It is modified if necessary to make it unique.
1365 BUFFER is the buffer (or buffer name) to associate with the process.
1367 Process output (both standard output and standard error streams) goes
1368 at end of BUFFER, unless you specify an output stream or filter
1369 function to handle the output. BUFFER may also be nil, meaning that
1370 this process is not associated with any buffer.
1372 PROGRAM is the program file name. It is searched for in `exec-path'
1373 (which see). If nil, just associate a pty with the buffer. Remaining
1374 arguments are strings to give program as arguments.
1376 If you want to separate standard output from standard error, invoke
1377 the command through a shell and redirect one of them using the shell
1380 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1381 (ptrdiff_t nargs
, Lisp_Object
*args
)
1383 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1384 register unsigned char **new_argv
;
1386 ptrdiff_t count
= SPECPDL_INDEX ();
1390 buffer
= Fget_buffer_create (buffer
);
1392 /* Make sure that the child will be able to chdir to the current
1393 buffer's current directory, or its unhandled equivalent. We
1394 can't just have the child check for an error when it does the
1395 chdir, since it's in a vfork.
1397 We have to GCPRO around this because Fexpand_file_name and
1398 Funhandled_file_name_directory might call a file name handling
1399 function. The argument list is protected by the caller, so all
1400 we really have to worry about is buffer. */
1402 struct gcpro gcpro1
, gcpro2
;
1404 current_dir
= BVAR (current_buffer
, directory
);
1406 GCPRO2 (buffer
, current_dir
);
1408 current_dir
= Funhandled_file_name_directory (current_dir
);
1409 if (NILP (current_dir
))
1410 /* If the file name handler says that current_dir is unreachable, use
1411 a sensible default. */
1412 current_dir
= build_string ("~/");
1413 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1414 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1415 report_file_error ("Setting current directory",
1416 BVAR (current_buffer
, directory
));
1422 CHECK_STRING (name
);
1426 if (!NILP (program
))
1427 CHECK_STRING (program
);
1429 proc
= make_process (name
);
1430 /* If an error occurs and we can't start the process, we want to
1431 remove it from the process list. This means that each error
1432 check in create_process doesn't need to call remove_process
1433 itself; it's all taken care of here. */
1434 record_unwind_protect (start_process_unwind
, proc
);
1436 pset_childp (XPROCESS (proc
), Qt
);
1437 pset_plist (XPROCESS (proc
), Qnil
);
1438 pset_type (XPROCESS (proc
), Qreal
);
1439 pset_buffer (XPROCESS (proc
), buffer
);
1440 pset_sentinel (XPROCESS (proc
), Qinternal_default_process_sentinel
);
1441 pset_filter (XPROCESS (proc
), Qinternal_default_process_filter
);
1442 pset_command (XPROCESS (proc
), Flist (nargs
- 2, args
+ 2));
1445 /* AKA GNUTLS_INITSTAGE(proc). */
1446 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1447 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1450 #ifdef ADAPTIVE_READ_BUFFERING
1451 XPROCESS (proc
)->adaptive_read_buffering
1452 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1453 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1456 /* Make the process marker point into the process buffer (if any). */
1457 if (BUFFERP (buffer
))
1458 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1459 BUF_ZV (XBUFFER (buffer
)),
1460 BUF_ZV_BYTE (XBUFFER (buffer
)));
1463 /* Decide coding systems for communicating with the process. Here
1464 we don't setup the structure coding_system nor pay attention to
1465 unibyte mode. They are done in create_process. */
1467 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1468 Lisp_Object coding_systems
= Qt
;
1469 Lisp_Object val
, *args2
;
1470 struct gcpro gcpro1
, gcpro2
;
1472 val
= Vcoding_system_for_read
;
1475 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1476 args2
[0] = Qstart_process
;
1477 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1478 GCPRO2 (proc
, current_dir
);
1479 if (!NILP (program
))
1480 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1482 if (CONSP (coding_systems
))
1483 val
= XCAR (coding_systems
);
1484 else if (CONSP (Vdefault_process_coding_system
))
1485 val
= XCAR (Vdefault_process_coding_system
);
1487 pset_decode_coding_system (XPROCESS (proc
), val
);
1489 val
= Vcoding_system_for_write
;
1492 if (EQ (coding_systems
, Qt
))
1494 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1495 args2
[0] = Qstart_process
;
1496 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1497 GCPRO2 (proc
, current_dir
);
1498 if (!NILP (program
))
1499 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1502 if (CONSP (coding_systems
))
1503 val
= XCDR (coding_systems
);
1504 else if (CONSP (Vdefault_process_coding_system
))
1505 val
= XCDR (Vdefault_process_coding_system
);
1507 pset_encode_coding_system (XPROCESS (proc
), val
);
1508 /* Note: At this moment, the above coding system may leave
1509 text-conversion or eol-conversion unspecified. They will be
1510 decided after we read output from the process and decode it by
1511 some coding system, or just before we actually send a text to
1516 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1517 XPROCESS (proc
)->decoding_carryover
= 0;
1518 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1520 XPROCESS (proc
)->inherit_coding_system_flag
1521 = !(NILP (buffer
) || !inherit_process_coding_system
);
1523 if (!NILP (program
))
1525 /* If program file name is not absolute, search our path for it.
1526 Put the name we will really use in TEM. */
1527 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1528 && !(SCHARS (program
) > 1
1529 && IS_DEVICE_SEP (SREF (program
, 1))))
1531 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1534 GCPRO4 (name
, program
, buffer
, current_dir
);
1535 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1538 report_file_error ("Searching for program", program
);
1539 tem
= Fexpand_file_name (tem
, Qnil
);
1543 if (!NILP (Ffile_directory_p (program
)))
1544 error ("Specified program for new process is a directory");
1548 /* If program file name starts with /: for quoting a magic name,
1550 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1551 && SREF (tem
, 1) == ':')
1552 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1555 Lisp_Object arg_encoding
= Qnil
;
1556 struct gcpro gcpro1
;
1559 /* Encode the file name and put it in NEW_ARGV.
1560 That's where the child will use it to execute the program. */
1561 tem
= list1 (ENCODE_FILE (tem
));
1563 /* Here we encode arguments by the coding system used for sending
1564 data to the process. We don't support using different coding
1565 systems for encoding arguments and for encoding data sent to the
1568 for (i
= 3; i
< nargs
; i
++)
1570 tem
= Fcons (args
[i
], tem
);
1571 CHECK_STRING (XCAR (tem
));
1572 if (STRING_MULTIBYTE (XCAR (tem
)))
1574 if (NILP (arg_encoding
))
1575 arg_encoding
= (complement_process_encoding_system
1576 (XPROCESS (proc
)->encode_coding_system
));
1578 code_convert_string_norecord
1579 (XCAR (tem
), arg_encoding
, 1));
1586 /* Now that everything is encoded we can collect the strings into
1588 new_argv
= alloca ((nargs
- 1) * sizeof *new_argv
);
1589 new_argv
[nargs
- 2] = 0;
1591 for (i
= nargs
- 2; i
-- != 0; )
1593 new_argv
[i
] = SDATA (XCAR (tem
));
1597 create_process (proc
, (char **) new_argv
, current_dir
);
1602 return unbind_to (count
, proc
);
1605 /* This function is the unwind_protect form for Fstart_process. If
1606 PROC doesn't have its pid set, then we know someone has signaled
1607 an error and the process wasn't started successfully, so we should
1608 remove it from the process list. */
1610 start_process_unwind (Lisp_Object proc
)
1612 if (!PROCESSP (proc
))
1615 /* Was PROC started successfully?
1616 -2 is used for a pty with no process, eg for gdb. */
1617 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1618 remove_process (proc
);
1621 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1624 close_process_fd (int *fd_addr
)
1634 /* Indexes of file descriptors in open_fds. */
1637 /* The pipe from Emacs to its subprocess. */
1639 WRITE_TO_SUBPROCESS
,
1641 /* The main pipe from the subprocess to Emacs. */
1642 READ_FROM_SUBPROCESS
,
1645 /* The pipe from the subprocess to Emacs that is closed when the
1646 subprocess execs. */
1647 READ_FROM_EXEC_MONITOR
,
1651 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1654 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1656 struct Lisp_Process
*p
= XPROCESS (process
);
1657 int inchannel
, outchannel
;
1660 int forkin
, forkout
;
1662 char pty_name
[PTY_NAME_SIZE
];
1663 Lisp_Object lisp_pty_name
= Qnil
;
1664 Lisp_Object encoded_current_dir
;
1666 inchannel
= outchannel
= -1;
1668 if (!NILP (Vprocess_connection_type
))
1669 outchannel
= inchannel
= allocate_pty (pty_name
);
1673 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1674 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1675 /* On most USG systems it does not work to open the pty's tty here,
1676 then close it and reopen it in the child. */
1677 /* Don't let this terminal become our controlling terminal
1678 (in case we don't have one). */
1679 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1681 report_file_error ("Opening pty", Qnil
);
1682 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1684 forkin
= forkout
= -1;
1685 #endif /* not USG, or USG_SUBTTY_WORKS */
1687 lisp_pty_name
= build_string (pty_name
);
1691 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1692 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1693 report_file_error ("Creating pipe", Qnil
);
1694 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1695 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1696 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1697 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1701 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1702 report_file_error ("Creating pipe", Qnil
);
1705 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1706 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1708 /* Record this as an active process, with its channels. */
1709 chan_process
[inchannel
] = process
;
1710 p
->infd
= inchannel
;
1711 p
->outfd
= outchannel
;
1713 /* Previously we recorded the tty descriptor used in the subprocess.
1714 It was only used for getting the foreground tty process, so now
1715 we just reopen the device (see emacs_get_tty_pgrp) as this is
1716 more portable (see USG_SUBTTY_WORKS above). */
1718 p
->pty_flag
= pty_flag
;
1719 pset_status (p
, Qrun
);
1721 FD_SET (inchannel
, &input_wait_mask
);
1722 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1723 if (inchannel
> max_process_desc
)
1724 max_process_desc
= inchannel
;
1726 /* This may signal an error. */
1727 setup_process_coding_systems (process
);
1729 encoded_current_dir
= ENCODE_FILE (current_dir
);
1732 block_child_signal ();
1735 /* vfork, and prevent local vars from being clobbered by the vfork. */
1737 Lisp_Object
volatile encoded_current_dir_volatile
= encoded_current_dir
;
1738 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1739 char **volatile new_argv_volatile
= new_argv
;
1740 int volatile forkin_volatile
= forkin
;
1741 int volatile forkout_volatile
= forkout
;
1742 struct Lisp_Process
*p_volatile
= p
;
1746 encoded_current_dir
= encoded_current_dir_volatile
;
1747 lisp_pty_name
= lisp_pty_name_volatile
;
1748 new_argv
= new_argv_volatile
;
1749 forkin
= forkin_volatile
;
1750 forkout
= forkout_volatile
;
1753 pty_flag
= p
->pty_flag
;
1757 #endif /* not WINDOWSNT */
1759 int xforkin
= forkin
;
1760 int xforkout
= forkout
;
1762 /* Make the pty be the controlling terminal of the process. */
1764 /* First, disconnect its current controlling terminal. */
1765 /* We tried doing setsid only if pty_flag, but it caused
1766 process_set_signal to fail on SGI when using a pipe. */
1768 /* Make the pty's terminal the controlling terminal. */
1769 if (pty_flag
&& xforkin
>= 0)
1772 /* We ignore the return value
1773 because faith@cs.unc.edu says that is necessary on Linux. */
1774 ioctl (xforkin
, TIOCSCTTY
, 0);
1777 #if defined (LDISC1)
1778 if (pty_flag
&& xforkin
>= 0)
1781 tcgetattr (xforkin
, &t
);
1783 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1784 emacs_perror ("create_process/tcsetattr LDISC1");
1787 #if defined (NTTYDISC) && defined (TIOCSETD)
1788 if (pty_flag
&& xforkin
>= 0)
1790 /* Use new line discipline. */
1791 int ldisc
= NTTYDISC
;
1792 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1797 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1798 can do TIOCSPGRP only to the process's controlling tty. */
1801 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1802 I can't test it since I don't have 4.3. */
1803 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1806 ioctl (j
, TIOCNOTTY
, 0);
1810 #endif /* TIOCNOTTY */
1812 #if !defined (DONT_REOPEN_PTY)
1813 /*** There is a suggestion that this ought to be a
1814 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1815 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1816 that system does seem to need this code, even though
1817 both TIOCSCTTY is defined. */
1818 /* Now close the pty (if we had it open) and reopen it.
1819 This makes the pty the controlling terminal of the subprocess. */
1823 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1826 emacs_close (xforkin
);
1827 xforkout
= xforkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1831 emacs_perror (SSDATA (lisp_pty_name
));
1832 _exit (EXIT_CANCELED
);
1836 #endif /* not DONT_REOPEN_PTY */
1838 #ifdef SETUP_SLAVE_PTY
1843 #endif /* SETUP_SLAVE_PTY */
1844 #endif /* HAVE_PTYS */
1846 signal (SIGINT
, SIG_DFL
);
1847 signal (SIGQUIT
, SIG_DFL
);
1849 /* Emacs ignores SIGPIPE, but the child should not. */
1850 signal (SIGPIPE
, SIG_DFL
);
1852 /* Stop blocking SIGCHLD in the child. */
1853 unblock_child_signal ();
1856 child_setup_tty (xforkout
);
1858 pid
= child_setup (xforkin
, xforkout
, xforkout
,
1859 new_argv
, 1, encoded_current_dir
);
1860 #else /* not WINDOWSNT */
1861 child_setup (xforkin
, xforkout
, xforkout
,
1862 new_argv
, 1, encoded_current_dir
);
1863 #endif /* not WINDOWSNT */
1866 /* Back in the parent process. */
1868 vfork_errno
= errno
;
1873 /* Stop blocking in the parent. */
1874 unblock_child_signal ();
1878 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1881 /* vfork succeeded. */
1883 /* Close the pipe ends that the child uses, or the child's pty. */
1884 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1885 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1888 register_child (pid
, inchannel
);
1889 #endif /* WINDOWSNT */
1891 pset_tty_name (p
, lisp_pty_name
);
1894 /* Wait for child_setup to complete in case that vfork is
1895 actually defined as fork. The descriptor
1896 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1897 of a pipe is closed at the child side either by close-on-exec
1898 on successful execve or the _exit call in child_setup. */
1902 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
1903 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
1904 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
1911 create_pty (Lisp_Object process
)
1913 struct Lisp_Process
*p
= XPROCESS (process
);
1914 char pty_name
[PTY_NAME_SIZE
];
1915 int pty_fd
= NILP (Vprocess_connection_type
) ? -1 : allocate_pty (pty_name
);
1919 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
1920 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1921 /* On most USG systems it does not work to open the pty's tty here,
1922 then close it and reopen it in the child. */
1923 /* Don't let this terminal become our controlling terminal
1924 (in case we don't have one). */
1925 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1927 report_file_error ("Opening pty", Qnil
);
1928 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
1929 #if defined (DONT_REOPEN_PTY)
1930 /* In the case that vfork is defined as fork, the parent process
1931 (Emacs) may send some data before the child process completes
1932 tty options setup. So we setup tty before forking. */
1933 child_setup_tty (forkout
);
1934 #endif /* DONT_REOPEN_PTY */
1935 #endif /* not USG, or USG_SUBTTY_WORKS */
1937 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
1939 /* Record this as an active process, with its channels.
1940 As a result, child_setup will close Emacs's side of the pipes. */
1941 chan_process
[pty_fd
] = process
;
1945 /* Previously we recorded the tty descriptor used in the subprocess.
1946 It was only used for getting the foreground tty process, so now
1947 we just reopen the device (see emacs_get_tty_pgrp) as this is
1948 more portable (see USG_SUBTTY_WORKS above). */
1951 pset_status (p
, Qrun
);
1952 setup_process_coding_systems (process
);
1954 FD_SET (pty_fd
, &input_wait_mask
);
1955 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
1956 if (pty_fd
> max_process_desc
)
1957 max_process_desc
= pty_fd
;
1959 pset_tty_name (p
, build_string (pty_name
));
1966 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1967 The address family of sa is not included in the result. */
1970 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1972 Lisp_Object address
;
1975 register struct Lisp_Vector
*p
;
1977 /* Workaround for a bug in getsockname on BSD: Names bound to
1978 sockets in the UNIX domain are inaccessible; getsockname returns
1979 a zero length name. */
1980 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
1981 return empty_unibyte_string
;
1983 switch (sa
->sa_family
)
1987 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
1988 len
= sizeof (sin
->sin_addr
) + 1;
1989 address
= Fmake_vector (make_number (len
), Qnil
);
1990 p
= XVECTOR (address
);
1991 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
1992 cp
= (unsigned char *) &sin
->sin_addr
;
1998 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
1999 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2000 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2001 address
= Fmake_vector (make_number (len
), Qnil
);
2002 p
= XVECTOR (address
);
2003 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2004 for (i
= 0; i
< len
; i
++)
2005 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2009 #ifdef HAVE_LOCAL_SOCKETS
2012 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2013 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2014 if (sockun
->sun_path
[i
] == 0)
2016 return make_unibyte_string (sockun
->sun_path
, i
);
2020 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2021 address
= Fcons (make_number (sa
->sa_family
),
2022 Fmake_vector (make_number (len
), Qnil
));
2023 p
= XVECTOR (XCDR (address
));
2024 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2030 p
->contents
[i
++] = make_number (*cp
++);
2036 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2039 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2041 register struct Lisp_Vector
*p
;
2043 if (VECTORP (address
))
2045 p
= XVECTOR (address
);
2046 if (p
->header
.size
== 5)
2049 return sizeof (struct sockaddr_in
);
2052 else if (p
->header
.size
== 9)
2054 *familyp
= AF_INET6
;
2055 return sizeof (struct sockaddr_in6
);
2059 #ifdef HAVE_LOCAL_SOCKETS
2060 else if (STRINGP (address
))
2062 *familyp
= AF_LOCAL
;
2063 return sizeof (struct sockaddr_un
);
2066 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2067 && VECTORP (XCDR (address
)))
2069 struct sockaddr
*sa
;
2070 *familyp
= XINT (XCAR (address
));
2071 p
= XVECTOR (XCDR (address
));
2072 return p
->header
.size
+ sizeof (sa
->sa_family
);
2077 /* Convert an address object (vector or string) to an internal sockaddr.
2079 The address format has been basically validated by
2080 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2081 it could have come from user data. So if FAMILY is not valid,
2082 we return after zeroing *SA. */
2085 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2087 register struct Lisp_Vector
*p
;
2088 register unsigned char *cp
= NULL
;
2092 memset (sa
, 0, len
);
2094 if (VECTORP (address
))
2096 p
= XVECTOR (address
);
2097 if (family
== AF_INET
)
2099 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2100 len
= sizeof (sin
->sin_addr
) + 1;
2101 hostport
= XINT (p
->contents
[--len
]);
2102 sin
->sin_port
= htons (hostport
);
2103 cp
= (unsigned char *)&sin
->sin_addr
;
2104 sa
->sa_family
= family
;
2107 else if (family
== AF_INET6
)
2109 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2110 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2111 len
= sizeof (sin6
->sin6_addr
) + 1;
2112 hostport
= XINT (p
->contents
[--len
]);
2113 sin6
->sin6_port
= htons (hostport
);
2114 for (i
= 0; i
< len
; i
++)
2115 if (INTEGERP (p
->contents
[i
]))
2117 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2120 sa
->sa_family
= family
;
2127 else if (STRINGP (address
))
2129 #ifdef HAVE_LOCAL_SOCKETS
2130 if (family
== AF_LOCAL
)
2132 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2133 cp
= SDATA (address
);
2134 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2135 sockun
->sun_path
[i
] = *cp
++;
2136 sa
->sa_family
= family
;
2143 p
= XVECTOR (XCDR (address
));
2144 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2147 for (i
= 0; i
< len
; i
++)
2148 if (INTEGERP (p
->contents
[i
]))
2149 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2152 #ifdef DATAGRAM_SOCKETS
2153 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2155 doc
: /* Get the current datagram address associated with PROCESS. */)
2156 (Lisp_Object process
)
2160 CHECK_PROCESS (process
);
2162 if (!DATAGRAM_CONN_P (process
))
2165 channel
= XPROCESS (process
)->infd
;
2166 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2167 datagram_address
[channel
].len
);
2170 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2172 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2173 Returns nil upon error setting address, ADDRESS otherwise. */)
2174 (Lisp_Object process
, Lisp_Object address
)
2179 CHECK_PROCESS (process
);
2181 if (!DATAGRAM_CONN_P (process
))
2184 channel
= XPROCESS (process
)->infd
;
2186 len
= get_lisp_to_sockaddr_size (address
, &family
);
2187 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2189 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2195 static const struct socket_options
{
2196 /* The name of this option. Should be lowercase version of option
2197 name without SO_ prefix. */
2199 /* Option level SOL_... */
2201 /* Option number SO_... */
2203 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2204 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2205 } socket_options
[] =
2207 #ifdef SO_BINDTODEVICE
2208 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2211 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2214 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2217 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2220 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2223 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2226 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2229 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2231 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2234 /* Set option OPT to value VAL on socket S.
2236 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2237 Signals an error if setting a known option fails.
2241 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2244 const struct socket_options
*sopt
;
2249 name
= SSDATA (SYMBOL_NAME (opt
));
2250 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2251 if (strcmp (name
, sopt
->name
) == 0)
2254 switch (sopt
->opttype
)
2259 optval
= NILP (val
) ? 0 : 1;
2260 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2261 &optval
, sizeof (optval
));
2268 if (TYPE_RANGED_INTEGERP (int, val
))
2269 optval
= XINT (val
);
2271 error ("Bad option value for %s", name
);
2272 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2273 &optval
, sizeof (optval
));
2277 #ifdef SO_BINDTODEVICE
2280 char devname
[IFNAMSIZ
+1];
2282 /* This is broken, at least in the Linux 2.4 kernel.
2283 To unbind, the arg must be a zero integer, not the empty string.
2284 This should work on all systems. KFS. 2003-09-23. */
2285 memset (devname
, 0, sizeof devname
);
2288 char *arg
= SSDATA (val
);
2289 int len
= min (strlen (arg
), IFNAMSIZ
);
2290 memcpy (devname
, arg
, len
);
2292 else if (!NILP (val
))
2293 error ("Bad option value for %s", name
);
2294 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2303 struct linger linger
;
2306 linger
.l_linger
= 0;
2307 if (TYPE_RANGED_INTEGERP (int, val
))
2308 linger
.l_linger
= XINT (val
);
2310 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2311 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2312 &linger
, sizeof (linger
));
2323 int setsockopt_errno
= errno
;
2324 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2328 return (1 << sopt
->optbit
);
2332 DEFUN ("set-network-process-option",
2333 Fset_network_process_option
, Sset_network_process_option
,
2335 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2336 See `make-network-process' for a list of options and values.
2337 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2338 OPTION is not a supported option, return nil instead; otherwise return t. */)
2339 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2342 struct Lisp_Process
*p
;
2344 CHECK_PROCESS (process
);
2345 p
= XPROCESS (process
);
2346 if (!NETCONN1_P (p
))
2347 error ("Process is not a network process");
2351 error ("Process is not running");
2353 if (set_socket_option (s
, option
, value
))
2355 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2359 if (NILP (no_error
))
2360 error ("Unknown or unsupported option");
2366 DEFUN ("serial-process-configure",
2367 Fserial_process_configure
,
2368 Sserial_process_configure
,
2370 doc
: /* Configure speed, bytesize, etc. of a serial process.
2372 Arguments are specified as keyword/argument pairs. Attributes that
2373 are not given are re-initialized from the process's current
2374 configuration (available via the function `process-contact') or set to
2375 reasonable default values. The following arguments are defined:
2381 -- Any of these arguments can be given to identify the process that is
2382 to be configured. If none of these arguments is given, the current
2383 buffer's process is used.
2385 :speed SPEED -- SPEED is the speed of the serial port in bits per
2386 second, also called baud rate. Any value can be given for SPEED, but
2387 most serial ports work only at a few defined values between 1200 and
2388 115200, with 9600 being the most common value. If SPEED is nil, the
2389 serial port is not configured any further, i.e., all other arguments
2390 are ignored. This may be useful for special serial ports such as
2391 Bluetooth-to-serial converters which can only be configured through AT
2392 commands. A value of nil for SPEED can be used only when passed
2393 through `make-serial-process' or `serial-term'.
2395 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2396 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2398 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2399 `odd' (use odd parity), or the symbol `even' (use even parity). If
2400 PARITY is not given, no parity is used.
2402 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2403 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2404 is not given or nil, 1 stopbit is used.
2406 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2407 flowcontrol to be used, which is either nil (don't use flowcontrol),
2408 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2409 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2410 flowcontrol is used.
2412 `serial-process-configure' is called by `make-serial-process' for the
2413 initial configuration of the serial port.
2417 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2419 \(serial-process-configure
2420 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2422 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2424 usage: (serial-process-configure &rest ARGS) */)
2425 (ptrdiff_t nargs
, Lisp_Object
*args
)
2427 struct Lisp_Process
*p
;
2428 Lisp_Object contact
= Qnil
;
2429 Lisp_Object proc
= Qnil
;
2430 struct gcpro gcpro1
;
2432 contact
= Flist (nargs
, args
);
2435 proc
= Fplist_get (contact
, QCprocess
);
2437 proc
= Fplist_get (contact
, QCname
);
2439 proc
= Fplist_get (contact
, QCbuffer
);
2441 proc
= Fplist_get (contact
, QCport
);
2442 proc
= get_process (proc
);
2443 p
= XPROCESS (proc
);
2444 if (!EQ (p
->type
, Qserial
))
2445 error ("Not a serial process");
2447 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2453 serial_configure (p
, contact
);
2459 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2461 doc
: /* Create and return a serial port process.
2463 In Emacs, serial port connections are represented by process objects,
2464 so input and output work as for subprocesses, and `delete-process'
2465 closes a serial port connection. However, a serial process has no
2466 process id, it cannot be signaled, and the status codes are different
2467 from normal processes.
2469 `make-serial-process' creates a process and a buffer, on which you
2470 probably want to use `process-send-string'. Try \\[serial-term] for
2471 an interactive terminal. See below for examples.
2473 Arguments are specified as keyword/argument pairs. The following
2474 arguments are defined:
2476 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2477 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2478 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2479 the backslashes in strings).
2481 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2482 which this function calls.
2484 :name NAME -- NAME is the name of the process. If NAME is not given,
2485 the value of PORT is used.
2487 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2488 with the process. Process output goes at the end of that buffer,
2489 unless you specify an output stream or filter function to handle the
2490 output. If BUFFER is not given, the value of NAME is used.
2492 :coding CODING -- If CODING is a symbol, it specifies the coding
2493 system used for both reading and writing for this process. If CODING
2494 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2495 ENCODING is used for writing.
2497 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2498 the process is running. If BOOL is not given, query before exiting.
2500 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2501 In the stopped state, a serial process does not accept incoming data,
2502 but you can send outgoing data. The stopped state is cleared by
2503 `continue-process' and set by `stop-process'.
2505 :filter FILTER -- Install FILTER as the process filter.
2507 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2509 :plist PLIST -- Install PLIST as the initial plist of the process.
2515 -- This function calls `serial-process-configure' to handle these
2518 The original argument list, possibly modified by later configuration,
2519 is available via the function `process-contact'.
2523 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2525 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2527 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2529 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2531 usage: (make-serial-process &rest ARGS) */)
2532 (ptrdiff_t nargs
, Lisp_Object
*args
)
2535 Lisp_Object proc
, contact
, port
;
2536 struct Lisp_Process
*p
;
2537 struct gcpro gcpro1
;
2538 Lisp_Object name
, buffer
;
2539 Lisp_Object tem
, val
;
2540 ptrdiff_t specpdl_count
;
2545 contact
= Flist (nargs
, args
);
2548 port
= Fplist_get (contact
, QCport
);
2550 error ("No port specified");
2551 CHECK_STRING (port
);
2553 if (NILP (Fplist_member (contact
, QCspeed
)))
2554 error (":speed not specified");
2555 if (!NILP (Fplist_get (contact
, QCspeed
)))
2556 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2558 name
= Fplist_get (contact
, QCname
);
2561 CHECK_STRING (name
);
2562 proc
= make_process (name
);
2563 specpdl_count
= SPECPDL_INDEX ();
2564 record_unwind_protect (remove_process
, proc
);
2565 p
= XPROCESS (proc
);
2567 fd
= serial_open (port
);
2568 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2571 if (fd
> max_process_desc
)
2572 max_process_desc
= fd
;
2573 chan_process
[fd
] = proc
;
2575 buffer
= Fplist_get (contact
, QCbuffer
);
2578 buffer
= Fget_buffer_create (buffer
);
2579 pset_buffer (p
, buffer
);
2581 pset_childp (p
, contact
);
2582 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2583 pset_type (p
, Qserial
);
2584 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2585 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2587 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2588 p
->kill_without_query
= 1;
2589 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2590 pset_command (p
, Qt
);
2591 eassert (! p
->pty_flag
);
2593 if (!EQ (p
->command
, Qt
))
2595 FD_SET (fd
, &input_wait_mask
);
2596 FD_SET (fd
, &non_keyboard_wait_mask
);
2599 if (BUFFERP (buffer
))
2601 set_marker_both (p
->mark
, buffer
,
2602 BUF_ZV (XBUFFER (buffer
)),
2603 BUF_ZV_BYTE (XBUFFER (buffer
)));
2606 tem
= Fplist_member (contact
, QCcoding
);
2607 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2613 val
= XCAR (XCDR (tem
));
2617 else if (!NILP (Vcoding_system_for_read
))
2618 val
= Vcoding_system_for_read
;
2619 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2620 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2622 pset_decode_coding_system (p
, val
);
2627 val
= XCAR (XCDR (tem
));
2631 else if (!NILP (Vcoding_system_for_write
))
2632 val
= Vcoding_system_for_write
;
2633 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2634 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2636 pset_encode_coding_system (p
, val
);
2638 setup_process_coding_systems (proc
);
2639 pset_decoding_buf (p
, empty_unibyte_string
);
2640 p
->decoding_carryover
= 0;
2641 pset_encoding_buf (p
, empty_unibyte_string
);
2642 p
->inherit_coding_system_flag
2643 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2645 Fserial_process_configure (nargs
, args
);
2647 specpdl_ptr
= specpdl
+ specpdl_count
;
2653 /* Create a network stream/datagram client/server process. Treated
2654 exactly like a normal process when reading and writing. Primary
2655 differences are in status display and process deletion. A network
2656 connection has no PID; you cannot signal it. All you can do is
2657 stop/continue it and deactivate/close it via delete-process */
2659 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2661 doc
: /* Create and return a network server or client process.
2663 In Emacs, network connections are represented by process objects, so
2664 input and output work as for subprocesses and `delete-process' closes
2665 a network connection. However, a network process has no process id,
2666 it cannot be signaled, and the status codes are different from normal
2669 Arguments are specified as keyword/argument pairs. The following
2670 arguments are defined:
2672 :name NAME -- NAME is name for process. It is modified if necessary
2675 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2676 with the process. Process output goes at end of that buffer, unless
2677 you specify an output stream or filter function to handle the output.
2678 BUFFER may be also nil, meaning that this process is not associated
2681 :host HOST -- HOST is name of the host to connect to, or its IP
2682 address. The symbol `local' specifies the local host. If specified
2683 for a server process, it must be a valid name or address for the local
2684 host, and only clients connecting to that address will be accepted.
2686 :service SERVICE -- SERVICE is name of the service desired, or an
2687 integer specifying a port number to connect to. If SERVICE is t,
2688 a random port number is selected for the server. (If Emacs was
2689 compiled with getaddrinfo, a port number can also be specified as a
2690 string, e.g. "80", as well as an integer. This is not portable.)
2692 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2693 stream type connection, `datagram' creates a datagram type connection,
2694 `seqpacket' creates a reliable datagram connection.
2696 :family FAMILY -- FAMILY is the address (and protocol) family for the
2697 service specified by HOST and SERVICE. The default (nil) is to use
2698 whatever address family (IPv4 or IPv6) that is defined for the host
2699 and port number specified by HOST and SERVICE. Other address families
2701 local -- for a local (i.e. UNIX) address specified by SERVICE.
2702 ipv4 -- use IPv4 address family only.
2703 ipv6 -- use IPv6 address family only.
2705 :local ADDRESS -- ADDRESS is the local address used for the connection.
2706 This parameter is ignored when opening a client process. When specified
2707 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2709 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2710 connection. This parameter is ignored when opening a stream server
2711 process. For a datagram server process, it specifies the initial
2712 setting of the remote datagram address. When specified for a client
2713 process, the FAMILY, HOST, and SERVICE args are ignored.
2715 The format of ADDRESS depends on the address family:
2716 - An IPv4 address is represented as an vector of integers [A B C D P]
2717 corresponding to numeric IP address A.B.C.D and port number P.
2718 - A local address is represented as a string with the address in the
2719 local address space.
2720 - An "unsupported family" address is represented by a cons (F . AV)
2721 where F is the family number and AV is a vector containing the socket
2722 address data with one element per address data byte. Do not rely on
2723 this format in portable code, as it may depend on implementation
2724 defined constants, data sizes, and data structure alignment.
2726 :coding CODING -- If CODING is a symbol, it specifies the coding
2727 system used for both reading and writing for this process. If CODING
2728 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2729 ENCODING is used for writing.
2731 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2732 return without waiting for the connection to complete; instead, the
2733 sentinel function will be called with second arg matching "open" (if
2734 successful) or "failed" when the connect completes. Default is to use
2735 a blocking connect (i.e. wait) for stream type connections.
2737 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2738 running when Emacs is exited.
2740 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2741 In the stopped state, a server process does not accept new
2742 connections, and a client process does not handle incoming traffic.
2743 The stopped state is cleared by `continue-process' and set by
2746 :filter FILTER -- Install FILTER as the process filter.
2748 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2749 process filter are multibyte, otherwise they are unibyte.
2750 If this keyword is not specified, the strings are multibyte if
2751 the default value of `enable-multibyte-characters' is non-nil.
2753 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2755 :log LOG -- Install LOG as the server process log function. This
2756 function is called when the server accepts a network connection from a
2757 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2758 is the server process, CLIENT is the new process for the connection,
2759 and MESSAGE is a string.
2761 :plist PLIST -- Install PLIST as the new process' initial plist.
2763 :server QLEN -- if QLEN is non-nil, create a server process for the
2764 specified FAMILY, SERVICE, and connection type (stream or datagram).
2765 If QLEN is an integer, it is used as the max. length of the server's
2766 pending connection queue (also known as the backlog); the default
2767 queue length is 5. Default is to create a client process.
2769 The following network options can be specified for this connection:
2771 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2772 :dontroute BOOL -- Only send to directly connected hosts.
2773 :keepalive BOOL -- Send keep-alive messages on network stream.
2774 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2775 :oobinline BOOL -- Place out-of-band data in receive data stream.
2776 :priority INT -- Set protocol defined priority for sent packets.
2777 :reuseaddr BOOL -- Allow reusing a recently used local address
2778 (this is allowed by default for a server process).
2779 :bindtodevice NAME -- bind to interface NAME. Using this may require
2780 special privileges on some systems.
2782 Consult the relevant system programmer's manual pages for more
2783 information on using these options.
2786 A server process will listen for and accept connections from clients.
2787 When a client connection is accepted, a new network process is created
2788 for the connection with the following parameters:
2790 - The client's process name is constructed by concatenating the server
2791 process' NAME and a client identification string.
2792 - If the FILTER argument is non-nil, the client process will not get a
2793 separate process buffer; otherwise, the client's process buffer is a newly
2794 created buffer named after the server process' BUFFER name or process
2795 NAME concatenated with the client identification string.
2796 - The connection type and the process filter and sentinel parameters are
2797 inherited from the server process' TYPE, FILTER and SENTINEL.
2798 - The client process' contact info is set according to the client's
2799 addressing information (typically an IP address and a port number).
2800 - The client process' plist is initialized from the server's plist.
2802 Notice that the FILTER and SENTINEL args are never used directly by
2803 the server process. Also, the BUFFER argument is not used directly by
2804 the server process, but via the optional :log function, accepted (and
2805 failed) connections may be logged in the server process' buffer.
2807 The original argument list, modified with the actual connection
2808 information, is available via the `process-contact' function.
2810 usage: (make-network-process &rest ARGS) */)
2811 (ptrdiff_t nargs
, Lisp_Object
*args
)
2814 Lisp_Object contact
;
2815 struct Lisp_Process
*p
;
2816 #ifdef HAVE_GETADDRINFO
2817 struct addrinfo ai
, *res
, *lres
;
2818 struct addrinfo hints
;
2819 const char *portstring
;
2821 #else /* HAVE_GETADDRINFO */
2822 struct _emacs_addrinfo
2828 struct sockaddr
*ai_addr
;
2829 struct _emacs_addrinfo
*ai_next
;
2831 #endif /* HAVE_GETADDRINFO */
2832 struct sockaddr_in address_in
;
2833 #ifdef HAVE_LOCAL_SOCKETS
2834 struct sockaddr_un address_un
;
2839 int s
= -1, outch
, inch
;
2840 struct gcpro gcpro1
;
2841 ptrdiff_t count
= SPECPDL_INDEX ();
2843 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2845 Lisp_Object name
, buffer
, host
, service
, address
;
2846 Lisp_Object filter
, sentinel
;
2847 bool is_non_blocking_client
= 0;
2856 /* Save arguments for process-contact and clone-process. */
2857 contact
= Flist (nargs
, args
);
2861 /* Ensure socket support is loaded if available. */
2862 init_winsock (TRUE
);
2865 /* :type TYPE (nil: stream, datagram */
2866 tem
= Fplist_get (contact
, QCtype
);
2868 socktype
= SOCK_STREAM
;
2869 #ifdef DATAGRAM_SOCKETS
2870 else if (EQ (tem
, Qdatagram
))
2871 socktype
= SOCK_DGRAM
;
2873 #ifdef HAVE_SEQPACKET
2874 else if (EQ (tem
, Qseqpacket
))
2875 socktype
= SOCK_SEQPACKET
;
2878 error ("Unsupported connection type");
2881 tem
= Fplist_get (contact
, QCserver
);
2884 /* Don't support network sockets when non-blocking mode is
2885 not available, since a blocked Emacs is not useful. */
2887 if (TYPE_RANGED_INTEGERP (int, tem
))
2888 backlog
= XINT (tem
);
2891 /* Make QCaddress an alias for :local (server) or :remote (client). */
2892 QCaddress
= is_server
? QClocal
: QCremote
;
2895 if (!is_server
&& socktype
!= SOCK_DGRAM
2896 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2898 #ifndef NON_BLOCKING_CONNECT
2899 error ("Non-blocking connect not supported");
2901 is_non_blocking_client
= 1;
2905 name
= Fplist_get (contact
, QCname
);
2906 buffer
= Fplist_get (contact
, QCbuffer
);
2907 filter
= Fplist_get (contact
, QCfilter
);
2908 sentinel
= Fplist_get (contact
, QCsentinel
);
2910 CHECK_STRING (name
);
2912 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2913 ai
.ai_socktype
= socktype
;
2918 /* :local ADDRESS or :remote ADDRESS */
2919 address
= Fplist_get (contact
, QCaddress
);
2920 if (!NILP (address
))
2922 host
= service
= Qnil
;
2924 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2925 error ("Malformed :address");
2926 ai
.ai_family
= family
;
2927 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2928 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2932 /* :family FAMILY -- nil (for Inet), local, or integer. */
2933 tem
= Fplist_get (contact
, QCfamily
);
2936 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2942 #ifdef HAVE_LOCAL_SOCKETS
2943 else if (EQ (tem
, Qlocal
))
2947 else if (EQ (tem
, Qipv6
))
2950 else if (EQ (tem
, Qipv4
))
2952 else if (TYPE_RANGED_INTEGERP (int, tem
))
2953 family
= XINT (tem
);
2955 error ("Unknown address family");
2957 ai
.ai_family
= family
;
2959 /* :service SERVICE -- string, integer (port number), or t (random port). */
2960 service
= Fplist_get (contact
, QCservice
);
2962 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2963 host
= Fplist_get (contact
, QChost
);
2966 if (EQ (host
, Qlocal
))
2967 /* Depending on setup, "localhost" may map to different IPv4 and/or
2968 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2969 host
= build_string ("127.0.0.1");
2970 CHECK_STRING (host
);
2973 #ifdef HAVE_LOCAL_SOCKETS
2974 if (family
== AF_LOCAL
)
2978 message (":family local ignores the :host \"%s\" property",
2980 contact
= Fplist_put (contact
, QChost
, Qnil
);
2983 CHECK_STRING (service
);
2984 memset (&address_un
, 0, sizeof address_un
);
2985 address_un
.sun_family
= AF_LOCAL
;
2986 if (sizeof address_un
.sun_path
<= SBYTES (service
))
2987 error ("Service name too long");
2988 strcpy (address_un
.sun_path
, SSDATA (service
));
2989 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2990 ai
.ai_addrlen
= sizeof address_un
;
2995 /* Slow down polling to every ten seconds.
2996 Some kernels have a bug which causes retrying connect to fail
2997 after a connect. Polling can interfere with gethostbyname too. */
2998 #ifdef POLL_FOR_INPUT
2999 if (socktype
!= SOCK_DGRAM
)
3001 record_unwind_protect_void (run_all_atimers
);
3002 bind_polling_period (10);
3006 #ifdef HAVE_GETADDRINFO
3007 /* If we have a host, use getaddrinfo to resolve both host and service.
3008 Otherwise, use getservbyname to lookup the service. */
3012 /* SERVICE can either be a string or int.
3013 Convert to a C string for later use by getaddrinfo. */
3014 if (EQ (service
, Qt
))
3016 else if (INTEGERP (service
))
3018 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3019 portstring
= portbuf
;
3023 CHECK_STRING (service
);
3024 portstring
= SSDATA (service
);
3029 memset (&hints
, 0, sizeof (hints
));
3031 hints
.ai_family
= family
;
3032 hints
.ai_socktype
= socktype
;
3033 hints
.ai_protocol
= 0;
3035 #ifdef HAVE_RES_INIT
3039 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3041 #ifdef HAVE_GAI_STRERROR
3042 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3044 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3050 #endif /* HAVE_GETADDRINFO */
3052 /* We end up here if getaddrinfo is not defined, or in case no hostname
3053 has been specified (e.g. for a local server process). */
3055 if (EQ (service
, Qt
))
3057 else if (INTEGERP (service
))
3058 port
= htons ((unsigned short) XINT (service
));
3061 struct servent
*svc_info
;
3062 CHECK_STRING (service
);
3063 svc_info
= getservbyname (SSDATA (service
),
3064 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3066 error ("Unknown service: %s", SDATA (service
));
3067 port
= svc_info
->s_port
;
3070 memset (&address_in
, 0, sizeof address_in
);
3071 address_in
.sin_family
= family
;
3072 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3073 address_in
.sin_port
= port
;
3075 #ifndef HAVE_GETADDRINFO
3078 struct hostent
*host_info_ptr
;
3080 /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
3081 as it may `hang' Emacs for a very long time. */
3085 #ifdef HAVE_RES_INIT
3089 host_info_ptr
= gethostbyname (SDATA (host
));
3094 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3095 host_info_ptr
->h_length
);
3096 family
= host_info_ptr
->h_addrtype
;
3097 address_in
.sin_family
= family
;
3100 /* Attempt to interpret host as numeric inet address */
3102 unsigned long numeric_addr
;
3103 numeric_addr
= inet_addr (SSDATA (host
));
3104 if (numeric_addr
== -1)
3105 error ("Unknown host \"%s\"", SDATA (host
));
3107 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3108 sizeof (address_in
.sin_addr
));
3112 #endif /* not HAVE_GETADDRINFO */
3114 ai
.ai_family
= family
;
3115 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3116 ai
.ai_addrlen
= sizeof address_in
;
3120 /* Do this in case we never enter the for-loop below. */
3121 count1
= SPECPDL_INDEX ();
3124 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3133 s
= socket (lres
->ai_family
, lres
->ai_socktype
| SOCK_CLOEXEC
,
3141 #ifdef DATAGRAM_SOCKETS
3142 if (!is_server
&& socktype
== SOCK_DGRAM
)
3144 #endif /* DATAGRAM_SOCKETS */
3146 #ifdef NON_BLOCKING_CONNECT
3147 if (is_non_blocking_client
)
3149 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3160 /* Make us close S if quit. */
3161 record_unwind_protect_int (close_file_unwind
, s
);
3163 /* Parse network options in the arg list.
3164 We simply ignore anything which isn't a known option (including other keywords).
3165 An error is signaled if setting a known option fails. */
3166 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3167 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3171 /* Configure as a server socket. */
3173 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3174 explicit :reuseaddr key to override this. */
3175 #ifdef HAVE_LOCAL_SOCKETS
3176 if (family
!= AF_LOCAL
)
3178 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3181 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3182 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3185 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3186 report_file_error ("Cannot bind server socket", Qnil
);
3188 #ifdef HAVE_GETSOCKNAME
3189 if (EQ (service
, Qt
))
3191 struct sockaddr_in sa1
;
3192 socklen_t len1
= sizeof (sa1
);
3193 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3195 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3196 service
= make_number (ntohs (sa1
.sin_port
));
3197 contact
= Fplist_put (contact
, QCservice
, service
);
3202 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3203 report_file_error ("Cannot listen on server socket", Qnil
);
3211 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3214 if (ret
== 0 || xerrno
== EISCONN
)
3216 /* The unwind-protect will be discarded afterwards.
3217 Likewise for immediate_quit. */
3221 #ifdef NON_BLOCKING_CONNECT
3223 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3227 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3234 if (xerrno
== EINTR
)
3236 /* Unlike most other syscalls connect() cannot be called
3237 again. (That would return EALREADY.) The proper way to
3238 wait for completion is pselect(). */
3246 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3252 report_file_error ("Failed select", Qnil
);
3256 len
= sizeof xerrno
;
3257 eassert (FD_ISSET (s
, &fdset
));
3258 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3259 report_file_error ("Failed getsockopt", Qnil
);
3261 report_file_errno ("Failed connect", Qnil
, xerrno
);
3264 #endif /* !WINDOWSNT */
3268 /* Discard the unwind protect closing S. */
3269 specpdl_ptr
= specpdl
+ count1
;
3274 if (xerrno
== EINTR
)
3281 #ifdef DATAGRAM_SOCKETS
3282 if (socktype
== SOCK_DGRAM
)
3284 if (datagram_address
[s
].sa
)
3286 datagram_address
[s
].sa
= xmalloc (lres
->ai_addrlen
);
3287 datagram_address
[s
].len
= lres
->ai_addrlen
;
3291 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3292 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3295 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3296 if (rlen
!= 0 && rfamily
== lres
->ai_family
3297 && rlen
== lres
->ai_addrlen
)
3298 conv_lisp_to_sockaddr (rfamily
, remote
,
3299 datagram_address
[s
].sa
, rlen
);
3303 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3306 contact
= Fplist_put (contact
, QCaddress
,
3307 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3308 #ifdef HAVE_GETSOCKNAME
3311 struct sockaddr_in sa1
;
3312 socklen_t len1
= sizeof (sa1
);
3313 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3314 contact
= Fplist_put (contact
, QClocal
,
3315 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3322 #ifdef HAVE_GETADDRINFO
3333 /* If non-blocking got this far - and failed - assume non-blocking is
3334 not supported after all. This is probably a wrong assumption, but
3335 the normal blocking calls to open-network-stream handles this error
3337 if (is_non_blocking_client
)
3340 report_file_errno ((is_server
3341 ? "make server process failed"
3342 : "make client process failed"),
3350 buffer
= Fget_buffer_create (buffer
);
3351 proc
= make_process (name
);
3353 chan_process
[inch
] = proc
;
3355 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3357 p
= XPROCESS (proc
);
3359 pset_childp (p
, contact
);
3360 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3361 pset_type (p
, Qnetwork
);
3363 pset_buffer (p
, buffer
);
3364 pset_sentinel (p
, sentinel
);
3365 pset_filter (p
, filter
);
3366 pset_log (p
, Fplist_get (contact
, QClog
));
3367 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3368 p
->kill_without_query
= 1;
3369 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3370 pset_command (p
, Qt
);
3373 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3377 /* Discard the unwind protect for closing S, if any. */
3378 specpdl_ptr
= specpdl
+ count1
;
3380 /* Unwind bind_polling_period and request_sigio. */
3381 unbind_to (count
, Qnil
);
3383 if (is_server
&& socktype
!= SOCK_DGRAM
)
3384 pset_status (p
, Qlisten
);
3386 /* Make the process marker point into the process buffer (if any). */
3387 if (BUFFERP (buffer
))
3388 set_marker_both (p
->mark
, buffer
,
3389 BUF_ZV (XBUFFER (buffer
)),
3390 BUF_ZV_BYTE (XBUFFER (buffer
)));
3392 #ifdef NON_BLOCKING_CONNECT
3393 if (is_non_blocking_client
)
3395 /* We may get here if connect did succeed immediately. However,
3396 in that case, we still need to signal this like a non-blocking
3398 pset_status (p
, Qconnect
);
3399 if (!FD_ISSET (inch
, &connect_wait_mask
))
3401 FD_SET (inch
, &connect_wait_mask
);
3402 FD_SET (inch
, &write_mask
);
3403 num_pending_connects
++;
3408 /* A server may have a client filter setting of Qt, but it must
3409 still listen for incoming connects unless it is stopped. */
3410 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3411 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3413 FD_SET (inch
, &input_wait_mask
);
3414 FD_SET (inch
, &non_keyboard_wait_mask
);
3417 if (inch
> max_process_desc
)
3418 max_process_desc
= inch
;
3420 tem
= Fplist_member (contact
, QCcoding
);
3421 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3422 tem
= Qnil
; /* No error message (too late!). */
3425 /* Setup coding systems for communicating with the network stream. */
3426 struct gcpro gcpro1
;
3427 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3428 Lisp_Object coding_systems
= Qt
;
3429 Lisp_Object fargs
[5], val
;
3433 val
= XCAR (XCDR (tem
));
3437 else if (!NILP (Vcoding_system_for_read
))
3438 val
= Vcoding_system_for_read
;
3439 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3440 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3441 /* We dare not decode end-of-line format by setting VAL to
3442 Qraw_text, because the existing Emacs Lisp libraries
3443 assume that they receive bare code including a sequence of
3448 if (NILP (host
) || NILP (service
))
3449 coding_systems
= Qnil
;
3452 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3453 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3455 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3458 if (CONSP (coding_systems
))
3459 val
= XCAR (coding_systems
);
3460 else if (CONSP (Vdefault_process_coding_system
))
3461 val
= XCAR (Vdefault_process_coding_system
);
3465 pset_decode_coding_system (p
, val
);
3469 val
= XCAR (XCDR (tem
));
3473 else if (!NILP (Vcoding_system_for_write
))
3474 val
= Vcoding_system_for_write
;
3475 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3479 if (EQ (coding_systems
, Qt
))
3481 if (NILP (host
) || NILP (service
))
3482 coding_systems
= Qnil
;
3485 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3486 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3488 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3492 if (CONSP (coding_systems
))
3493 val
= XCDR (coding_systems
);
3494 else if (CONSP (Vdefault_process_coding_system
))
3495 val
= XCDR (Vdefault_process_coding_system
);
3499 pset_encode_coding_system (p
, val
);
3501 setup_process_coding_systems (proc
);
3503 pset_decoding_buf (p
, empty_unibyte_string
);
3504 p
->decoding_carryover
= 0;
3505 pset_encoding_buf (p
, empty_unibyte_string
);
3507 p
->inherit_coding_system_flag
3508 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3515 #if defined (HAVE_NET_IF_H)
3518 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3519 doc
: /* Return an alist of all network interfaces and their network address.
3520 Each element is a cons, the car of which is a string containing the
3521 interface name, and the cdr is the network address in internal
3522 format; see the description of ADDRESS in `make-network-process'. */)
3525 struct ifconf ifconf
;
3526 struct ifreq
*ifreq
;
3528 ptrdiff_t buf_size
= 512;
3533 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3536 count
= SPECPDL_INDEX ();
3537 record_unwind_protect_int (close_file_unwind
, s
);
3541 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3542 ifconf
.ifc_buf
= buf
;
3543 ifconf
.ifc_len
= buf_size
;
3544 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3551 while (ifconf
.ifc_len
== buf_size
);
3553 res
= unbind_to (count
, Qnil
);
3554 ifreq
= ifconf
.ifc_req
;
3555 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3557 struct ifreq
*ifq
= ifreq
;
3558 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3559 #define SIZEOF_IFREQ(sif) \
3560 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3561 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3563 int len
= SIZEOF_IFREQ (ifq
);
3565 int len
= sizeof (*ifreq
);
3567 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3568 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
3570 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3573 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3574 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3575 res
= Fcons (Fcons (build_string (namebuf
),
3576 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3577 sizeof (struct sockaddr
))),
3584 #endif /* SIOCGIFCONF */
3586 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
3590 const char *flag_sym
;
3593 static const struct ifflag_def ifflag_table
[] = {
3597 #ifdef IFF_BROADCAST
3598 { IFF_BROADCAST
, "broadcast" },
3601 { IFF_DEBUG
, "debug" },
3604 { IFF_LOOPBACK
, "loopback" },
3606 #ifdef IFF_POINTOPOINT
3607 { IFF_POINTOPOINT
, "pointopoint" },
3610 { IFF_RUNNING
, "running" },
3613 { IFF_NOARP
, "noarp" },
3616 { IFF_PROMISC
, "promisc" },
3618 #ifdef IFF_NOTRAILERS
3619 #ifdef NS_IMPL_COCOA
3620 /* Really means smart, notrailers is obsolete */
3621 { IFF_NOTRAILERS
, "smart" },
3623 { IFF_NOTRAILERS
, "notrailers" },
3627 { IFF_ALLMULTI
, "allmulti" },
3630 { IFF_MASTER
, "master" },
3633 { IFF_SLAVE
, "slave" },
3635 #ifdef IFF_MULTICAST
3636 { IFF_MULTICAST
, "multicast" },
3639 { IFF_PORTSEL
, "portsel" },
3641 #ifdef IFF_AUTOMEDIA
3642 { IFF_AUTOMEDIA
, "automedia" },
3645 { IFF_DYNAMIC
, "dynamic" },
3648 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3651 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3654 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3657 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3660 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3665 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3666 doc
: /* Return information about network interface named IFNAME.
3667 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3668 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3669 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
3670 FLAGS is the current flags of the interface. */)
3671 (Lisp_Object ifname
)
3674 Lisp_Object res
= Qnil
;
3679 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3680 && defined HAVE_GETIFADDRS && defined LLADDR)
3681 struct ifaddrs
*ifap
;
3684 CHECK_STRING (ifname
);
3686 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
3687 error ("interface name too long");
3688 strcpy (rq
.ifr_name
, SSDATA (ifname
));
3690 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3693 count
= SPECPDL_INDEX ();
3694 record_unwind_protect_int (close_file_unwind
, s
);
3697 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3698 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3700 int flags
= rq
.ifr_flags
;
3701 const struct ifflag_def
*fp
;
3704 /* If flags is smaller than int (i.e. short) it may have the high bit set
3705 due to IFF_MULTICAST. In that case, sign extending it into
3707 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3708 flags
= (unsigned short) rq
.ifr_flags
;
3711 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3713 if (flags
& fp
->flag_bit
)
3715 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3716 flags
-= fp
->flag_bit
;
3719 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3723 elt
= Fcons (make_number (fnum
), elt
);
3728 res
= Fcons (elt
, res
);
3731 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3732 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3734 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3735 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3739 for (n
= 0; n
< 6; n
++)
3740 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3741 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3743 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3744 if (getifaddrs (&ifap
) != -1)
3746 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3747 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3750 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3752 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3753 unsigned char linkaddr
[6];
3756 if (it
->ifa_addr
->sa_family
!= AF_LINK
3757 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3758 || sdl
->sdl_alen
!= 6)
3761 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3762 for (n
= 0; n
< 6; n
++)
3763 p
->contents
[n
] = make_number (linkaddr
[n
]);
3765 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3769 #ifdef HAVE_FREEIFADDRS
3773 #endif /* HAVE_GETIFADDRS && LLADDR */
3775 res
= Fcons (elt
, res
);
3778 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3779 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3782 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3783 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3785 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3789 res
= Fcons (elt
, res
);
3792 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3793 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3796 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3799 res
= Fcons (elt
, res
);
3802 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3803 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3806 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3809 res
= Fcons (elt
, res
);
3811 return unbind_to (count
, any
? res
: Qnil
);
3814 #endif /* defined (HAVE_NET_IF_H) */
3816 /* Turn off input and output for process PROC. */
3819 deactivate_process (Lisp_Object proc
)
3822 struct Lisp_Process
*p
= XPROCESS (proc
);
3826 /* Delete GnuTLS structures in PROC, if any. */
3827 emacs_gnutls_deinit (proc
);
3828 #endif /* HAVE_GNUTLS */
3830 #ifdef ADAPTIVE_READ_BUFFERING
3831 if (p
->read_output_delay
> 0)
3833 if (--process_output_delay_count
< 0)
3834 process_output_delay_count
= 0;
3835 p
->read_output_delay
= 0;
3836 p
->read_output_skip
= 0;
3840 inchannel
= p
->infd
;
3842 /* Beware SIGCHLD hereabouts. */
3844 flush_pending_output (inchannel
);
3846 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
3847 close_process_fd (&p
->open_fd
[i
]);
3853 #ifdef DATAGRAM_SOCKETS
3854 if (DATAGRAM_CHAN_P (inchannel
))
3856 xfree (datagram_address
[inchannel
].sa
);
3857 datagram_address
[inchannel
].sa
= 0;
3858 datagram_address
[inchannel
].len
= 0;
3861 chan_process
[inchannel
] = Qnil
;
3862 FD_CLR (inchannel
, &input_wait_mask
);
3863 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3864 #ifdef NON_BLOCKING_CONNECT
3865 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3867 FD_CLR (inchannel
, &connect_wait_mask
);
3868 FD_CLR (inchannel
, &write_mask
);
3869 if (--num_pending_connects
< 0)
3873 if (inchannel
== max_process_desc
)
3875 /* We just closed the highest-numbered process input descriptor,
3876 so recompute the highest-numbered one now. */
3880 while (0 <= i
&& NILP (chan_process
[i
]));
3882 max_process_desc
= i
;
3888 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3890 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3891 It is read into the process' buffers or given to their filter functions.
3892 Non-nil arg PROCESS means do not return until some output has been received
3895 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3896 and milliseconds to wait; return after that much time whether or not
3897 there is any subprocess output. If SECONDS is a floating point number,
3898 it specifies a fractional number of seconds to wait.
3899 The MILLISEC argument is obsolete and should be avoided.
3901 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3902 from PROCESS, suspending reading output from other processes.
3903 If JUST-THIS-ONE is an integer, don't run any timers either.
3904 Return non-nil if we received any output before the timeout expired. */)
3905 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3910 if (! NILP (process
))
3911 CHECK_PROCESS (process
);
3913 just_this_one
= Qnil
;
3915 if (!NILP (millisec
))
3916 { /* Obsolete calling convention using integers rather than floats. */
3917 CHECK_NUMBER (millisec
);
3919 seconds
= make_float (XINT (millisec
) / 1000.0);
3922 CHECK_NUMBER (seconds
);
3923 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3930 if (!NILP (seconds
))
3932 if (INTEGERP (seconds
))
3934 if (XINT (seconds
) > 0)
3936 secs
= XINT (seconds
);
3940 else if (FLOATP (seconds
))
3942 if (XFLOAT_DATA (seconds
) > 0)
3944 EMACS_TIME t
= EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds
));
3945 secs
= min (EMACS_SECS (t
), WAIT_READING_MAX
);
3946 nsecs
= EMACS_NSECS (t
);
3950 wrong_type_argument (Qnumberp
, seconds
);
3952 else if (! NILP (process
))
3956 (wait_reading_process_output (secs
, nsecs
, 0, 0,
3958 !NILP (process
) ? XPROCESS (process
) : NULL
,
3959 NILP (just_this_one
) ? 0 :
3960 !INTEGERP (just_this_one
) ? 1 : -1)
3964 /* Accept a connection for server process SERVER on CHANNEL. */
3966 static EMACS_INT connect_counter
= 0;
3969 server_accept_connection (Lisp_Object server
, int channel
)
3971 Lisp_Object proc
, caller
, name
, buffer
;
3972 Lisp_Object contact
, host
, service
;
3973 struct Lisp_Process
*ps
= XPROCESS (server
);
3974 struct Lisp_Process
*p
;
3978 struct sockaddr_in in
;
3980 struct sockaddr_in6 in6
;
3982 #ifdef HAVE_LOCAL_SOCKETS
3983 struct sockaddr_un un
;
3986 socklen_t len
= sizeof saddr
;
3989 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
3998 if (code
== EWOULDBLOCK
)
4002 if (!NILP (ps
->log
))
4003 call3 (ps
->log
, server
, Qnil
,
4004 concat3 (build_string ("accept failed with code"),
4005 Fnumber_to_string (make_number (code
)),
4006 build_string ("\n")));
4010 count
= SPECPDL_INDEX ();
4011 record_unwind_protect_int (close_file_unwind
, s
);
4015 /* Setup a new process to handle the connection. */
4017 /* Generate a unique identification of the caller, and build contact
4018 information for this process. */
4021 switch (saddr
.sa
.sa_family
)
4025 Lisp_Object args
[5];
4026 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4027 args
[0] = build_string ("%d.%d.%d.%d");
4028 args
[1] = make_number (*ip
++);
4029 args
[2] = make_number (*ip
++);
4030 args
[3] = make_number (*ip
++);
4031 args
[4] = make_number (*ip
++);
4032 host
= Fformat (5, args
);
4033 service
= make_number (ntohs (saddr
.in
.sin_port
));
4035 args
[0] = build_string (" <%s:%d>");
4038 caller
= Fformat (3, args
);
4045 Lisp_Object args
[9];
4046 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4048 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4049 for (i
= 0; i
< 8; i
++)
4050 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4051 host
= Fformat (9, args
);
4052 service
= make_number (ntohs (saddr
.in
.sin_port
));
4054 args
[0] = build_string (" <[%s]:%d>");
4057 caller
= Fformat (3, args
);
4062 #ifdef HAVE_LOCAL_SOCKETS
4066 caller
= Fnumber_to_string (make_number (connect_counter
));
4067 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4071 /* Create a new buffer name for this process if it doesn't have a
4072 filter. The new buffer name is based on the buffer name or
4073 process name of the server process concatenated with the caller
4076 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4077 || EQ (ps
->filter
, Qt
)))
4081 buffer
= ps
->buffer
;
4083 buffer
= Fbuffer_name (buffer
);
4088 buffer
= concat2 (buffer
, caller
);
4089 buffer
= Fget_buffer_create (buffer
);
4093 /* Generate a unique name for the new server process. Combine the
4094 server process name with the caller identification. */
4096 name
= concat2 (ps
->name
, caller
);
4097 proc
= make_process (name
);
4099 chan_process
[s
] = proc
;
4101 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4103 p
= XPROCESS (proc
);
4105 /* Build new contact information for this setup. */
4106 contact
= Fcopy_sequence (ps
->childp
);
4107 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4108 contact
= Fplist_put (contact
, QChost
, host
);
4109 if (!NILP (service
))
4110 contact
= Fplist_put (contact
, QCservice
, service
);
4111 contact
= Fplist_put (contact
, QCremote
,
4112 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4113 #ifdef HAVE_GETSOCKNAME
4115 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4116 contact
= Fplist_put (contact
, QClocal
,
4117 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4120 pset_childp (p
, contact
);
4121 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4122 pset_type (p
, Qnetwork
);
4124 pset_buffer (p
, buffer
);
4125 pset_sentinel (p
, ps
->sentinel
);
4126 pset_filter (p
, ps
->filter
);
4127 pset_command (p
, Qnil
);
4130 /* Discard the unwind protect for closing S. */
4131 specpdl_ptr
= specpdl
+ count
;
4133 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4136 pset_status (p
, Qrun
);
4138 /* Client processes for accepted connections are not stopped initially. */
4139 if (!EQ (p
->filter
, Qt
))
4141 FD_SET (s
, &input_wait_mask
);
4142 FD_SET (s
, &non_keyboard_wait_mask
);
4145 if (s
> max_process_desc
)
4146 max_process_desc
= s
;
4148 /* Setup coding system for new process based on server process.
4149 This seems to be the proper thing to do, as the coding system
4150 of the new process should reflect the settings at the time the
4151 server socket was opened; not the current settings. */
4153 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4154 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4155 setup_process_coding_systems (proc
);
4157 pset_decoding_buf (p
, empty_unibyte_string
);
4158 p
->decoding_carryover
= 0;
4159 pset_encoding_buf (p
, empty_unibyte_string
);
4161 p
->inherit_coding_system_flag
4162 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4164 if (!NILP (ps
->log
))
4165 call3 (ps
->log
, server
, proc
,
4166 concat3 (build_string ("accept from "),
4167 (STRINGP (host
) ? host
: build_string ("-")),
4168 build_string ("\n")));
4170 exec_sentinel (proc
,
4171 concat3 (build_string ("open from "),
4172 (STRINGP (host
) ? host
: build_string ("-")),
4173 build_string ("\n")));
4176 /* This variable is different from waiting_for_input in keyboard.c.
4177 It is used to communicate to a lisp process-filter/sentinel (via the
4178 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4179 for user-input when that process-filter was called.
4180 waiting_for_input cannot be used as that is by definition 0 when
4181 lisp code is being evalled.
4182 This is also used in record_asynch_buffer_change.
4183 For that purpose, this must be 0
4184 when not inside wait_reading_process_output. */
4185 static int waiting_for_user_input_p
;
4188 wait_reading_process_output_unwind (int data
)
4190 waiting_for_user_input_p
= data
;
4193 /* This is here so breakpoints can be put on it. */
4195 wait_reading_process_output_1 (void)
4199 /* Read and dispose of subprocess output while waiting for timeout to
4200 elapse and/or keyboard input to be available.
4204 If negative, gobble data immediately available but don't wait for any.
4207 an additional duration to wait, measured in nanoseconds
4208 If TIME_LIMIT is zero, then:
4209 If NSECS == 0, there is no limit.
4210 If NSECS > 0, the timeout consists of NSECS only.
4211 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4214 0 to ignore keyboard input, or
4215 1 to return when input is available, or
4216 -1 meaning caller will actually read the input, so don't throw to
4217 the quit handler, or
4219 DO_DISPLAY means redisplay should be done to show subprocess
4220 output that arrives.
4222 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4223 (and gobble terminal input into the buffer if any arrives).
4225 If WAIT_PROC is specified, wait until something arrives from that
4226 process. The return value is true if we read some input from
4229 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4230 (suspending output from other processes). A negative value
4231 means don't run any timers either.
4233 If WAIT_PROC is specified, then the function returns true if we
4234 received input from that process before the timeout elapsed.
4235 Otherwise, return true if we received input from any process. */
4238 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4240 Lisp_Object wait_for_cell
,
4241 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4244 SELECT_TYPE Available
;
4245 SELECT_TYPE Writeok
;
4251 EMACS_TIME timeout
, end_time
;
4252 int wait_channel
= -1;
4253 bool got_some_input
= 0;
4254 ptrdiff_t count
= SPECPDL_INDEX ();
4256 FD_ZERO (&Available
);
4259 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4260 && !(CONSP (wait_proc
->status
)
4261 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4262 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4264 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4265 if (wait_proc
!= NULL
)
4266 wait_channel
= wait_proc
->infd
;
4268 record_unwind_protect_int (wait_reading_process_output_unwind
,
4269 waiting_for_user_input_p
);
4270 waiting_for_user_input_p
= read_kbd
;
4277 else if (TYPE_MAXIMUM (time_t) < time_limit
)
4278 time_limit
= TYPE_MAXIMUM (time_t);
4280 /* Since we may need to wait several times,
4281 compute the absolute time to return at. */
4282 if (time_limit
|| nsecs
> 0)
4284 timeout
= make_emacs_time (time_limit
, nsecs
);
4285 end_time
= add_emacs_time (current_emacs_time (), timeout
);
4290 bool timeout_reduced_for_timers
= 0;
4292 /* If calling from keyboard input, do not quit
4293 since we want to return C-g as an input character.
4294 Otherwise, do pending quit if requested. */
4297 else if (pending_signals
)
4298 process_pending_signals ();
4300 /* Exit now if the cell we're waiting for became non-nil. */
4301 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4304 /* Compute time from now till when time limit is up. */
4305 /* Exit if already run out. */
4308 /* A negative timeout means
4309 gobble output available now
4310 but don't wait at all. */
4312 timeout
= make_emacs_time (0, 0);
4314 else if (time_limit
|| nsecs
> 0)
4316 EMACS_TIME now
= current_emacs_time ();
4317 if (EMACS_TIME_LE (end_time
, now
))
4319 timeout
= sub_emacs_time (end_time
, now
);
4323 timeout
= make_emacs_time (100000, 0);
4326 /* Normally we run timers here.
4327 But not if wait_for_cell; in those cases,
4328 the wait is supposed to be short,
4329 and those callers cannot handle running arbitrary Lisp code here. */
4330 if (NILP (wait_for_cell
)
4331 && just_wait_proc
>= 0)
4333 EMACS_TIME timer_delay
;
4337 unsigned old_timers_run
= timers_run
;
4338 struct buffer
*old_buffer
= current_buffer
;
4339 Lisp_Object old_window
= selected_window
;
4341 timer_delay
= timer_check ();
4343 /* If a timer has run, this might have changed buffers
4344 an alike. Make read_key_sequence aware of that. */
4345 if (timers_run
!= old_timers_run
4346 && (old_buffer
!= current_buffer
4347 || !EQ (old_window
, selected_window
))
4348 && waiting_for_user_input_p
== -1)
4349 record_asynch_buffer_change ();
4351 if (timers_run
!= old_timers_run
&& do_display
)
4352 /* We must retry, since a timer may have requeued itself
4353 and that could alter the time_delay. */
4354 redisplay_preserve_echo_area (9);
4358 while (!detect_input_pending ());
4360 /* If there is unread keyboard input, also return. */
4362 && requeued_events_pending_p ())
4365 /* A negative timeout means do not wait at all. */
4368 if (EMACS_TIME_VALID_P (timer_delay
))
4370 if (EMACS_TIME_LT (timer_delay
, timeout
))
4372 timeout
= timer_delay
;
4373 timeout_reduced_for_timers
= 1;
4378 /* This is so a breakpoint can be put here. */
4379 wait_reading_process_output_1 ();
4384 /* Cause C-g and alarm signals to take immediate action,
4385 and cause input available signals to zero out timeout.
4387 It is important that we do this before checking for process
4388 activity. If we get a SIGCHLD after the explicit checks for
4389 process activity, timeout is the only way we will know. */
4391 set_waiting_for_input (&timeout
);
4393 /* If status of something has changed, and no input is
4394 available, notify the user of the change right away. After
4395 this explicit check, we'll let the SIGCHLD handler zap
4396 timeout to get our attention. */
4397 if (update_tick
!= process_tick
)
4402 if (kbd_on_hold_p ())
4405 Atemp
= input_wait_mask
;
4408 timeout
= make_emacs_time (0, 0);
4409 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4411 #ifdef NON_BLOCKING_CONNECT
4412 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4416 NULL
, &timeout
, NULL
)
4419 /* It's okay for us to do this and then continue with
4420 the loop, since timeout has already been zeroed out. */
4421 clear_waiting_for_input ();
4422 status_notify (NULL
);
4423 if (do_display
) redisplay_preserve_echo_area (13);
4427 /* Don't wait for output from a non-running process. Just
4428 read whatever data has already been received. */
4429 if (wait_proc
&& wait_proc
->raw_status_new
)
4430 update_status (wait_proc
);
4432 && ! EQ (wait_proc
->status
, Qrun
)
4433 && ! EQ (wait_proc
->status
, Qconnect
))
4435 bool read_some_bytes
= 0;
4437 clear_waiting_for_input ();
4438 XSETPROCESS (proc
, wait_proc
);
4440 /* Read data from the process, until we exhaust it. */
4441 while (wait_proc
->infd
>= 0)
4443 int nread
= read_process_output (proc
, wait_proc
->infd
);
4449 got_some_input
= read_some_bytes
= 1;
4450 else if (nread
== -1 && (errno
== EIO
|| errno
== EAGAIN
))
4453 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4457 if (read_some_bytes
&& do_display
)
4458 redisplay_preserve_echo_area (10);
4463 /* Wait till there is something to do */
4465 if (wait_proc
&& just_wait_proc
)
4467 if (wait_proc
->infd
< 0) /* Terminated */
4469 FD_SET (wait_proc
->infd
, &Available
);
4473 else if (!NILP (wait_for_cell
))
4475 Available
= non_process_wait_mask
;
4482 Available
= non_keyboard_wait_mask
;
4484 Available
= input_wait_mask
;
4485 Writeok
= write_mask
;
4486 #ifdef SELECT_CANT_DO_WRITE_MASK
4491 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4494 /* If frame size has changed or the window is newly mapped,
4495 redisplay now, before we start to wait. There is a race
4496 condition here; if a SIGIO arrives between now and the select
4497 and indicates that a frame is trashed, the select may block
4498 displaying a trashed screen. */
4499 if (frame_garbaged
&& do_display
)
4501 clear_waiting_for_input ();
4502 redisplay_preserve_echo_area (11);
4504 set_waiting_for_input (&timeout
);
4507 /* Skip the `select' call if input is available and we're
4508 waiting for keyboard input or a cell change (which can be
4509 triggered by processing X events). In the latter case, set
4510 nfds to 1 to avoid breaking the loop. */
4512 if ((read_kbd
|| !NILP (wait_for_cell
))
4513 && detect_input_pending ())
4515 nfds
= read_kbd
? 0 : 1;
4522 #ifdef ADAPTIVE_READ_BUFFERING
4523 /* Set the timeout for adaptive read buffering if any
4524 process has non-zero read_output_skip and non-zero
4525 read_output_delay, and we are not reading output for a
4526 specific wait_channel. It is not executed if
4527 Vprocess_adaptive_read_buffering is nil. */
4528 if (process_output_skip
&& check_delay
> 0)
4530 int nsecs
= EMACS_NSECS (timeout
);
4531 if (EMACS_SECS (timeout
) > 0 || nsecs
> READ_OUTPUT_DELAY_MAX
)
4532 nsecs
= READ_OUTPUT_DELAY_MAX
;
4533 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4535 proc
= chan_process
[channel
];
4538 /* Find minimum non-zero read_output_delay among the
4539 processes with non-zero read_output_skip. */
4540 if (XPROCESS (proc
)->read_output_delay
> 0)
4543 if (!XPROCESS (proc
)->read_output_skip
)
4545 FD_CLR (channel
, &Available
);
4546 XPROCESS (proc
)->read_output_skip
= 0;
4547 if (XPROCESS (proc
)->read_output_delay
< nsecs
)
4548 nsecs
= XPROCESS (proc
)->read_output_delay
;
4551 timeout
= make_emacs_time (0, nsecs
);
4552 process_output_skip
= 0;
4556 #if defined (HAVE_NS)
4558 #elif defined (HAVE_GLIB)
4563 (max (max_process_desc
, max_input_desc
) + 1,
4565 (check_write
? &Writeok
: 0),
4566 NULL
, &timeout
, NULL
);
4569 /* GnuTLS buffers data internally. In lowat mode it leaves
4570 some data in the TCP buffers so that select works, but
4571 with custom pull/push functions we need to check if some
4572 data is available in the buffers manually. */
4577 /* We're not waiting on a specific process, so loop
4578 through all the channels and check for data.
4579 This is a workaround needed for some versions of
4580 the gnutls library -- 2.12.14 has been confirmed
4582 http://comments.gmane.org/gmane.emacs.devel/145074 */
4583 for (channel
= 0; channel
< MAXDESC
; ++channel
)
4584 if (! NILP (chan_process
[channel
]))
4586 struct Lisp_Process
*p
=
4587 XPROCESS (chan_process
[channel
]);
4588 if (p
&& p
->gnutls_p
&& p
->infd
4589 && ((emacs_gnutls_record_check_pending
4594 FD_SET (p
->infd
, &Available
);
4600 /* Check this specific channel. */
4601 if (wait_proc
->gnutls_p
/* Check for valid process. */
4602 /* Do we have pending data? */
4603 && ((emacs_gnutls_record_check_pending
4604 (wait_proc
->gnutls_state
))
4608 /* Set to Available. */
4609 FD_SET (wait_proc
->infd
, &Available
);
4618 /* Make C-g and alarm signals set flags again */
4619 clear_waiting_for_input ();
4621 /* If we woke up due to SIGWINCH, actually change size now. */
4622 do_pending_window_change (0);
4624 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
4625 /* We waited the full specified time, so return now. */
4629 if (xerrno
== EINTR
)
4631 else if (xerrno
== EBADF
)
4634 report_file_errno ("Failed select", Qnil
, xerrno
);
4639 FD_ZERO (&Available
);
4643 /* Check for keyboard input */
4644 /* If there is any, return immediately
4645 to give it higher priority than subprocesses */
4649 unsigned old_timers_run
= timers_run
;
4650 struct buffer
*old_buffer
= current_buffer
;
4651 Lisp_Object old_window
= selected_window
;
4654 if (detect_input_pending_run_timers (do_display
))
4656 swallow_events (do_display
);
4657 if (detect_input_pending_run_timers (do_display
))
4661 /* If a timer has run, this might have changed buffers
4662 an alike. Make read_key_sequence aware of that. */
4663 if (timers_run
!= old_timers_run
4664 && waiting_for_user_input_p
== -1
4665 && (old_buffer
!= current_buffer
4666 || !EQ (old_window
, selected_window
)))
4667 record_asynch_buffer_change ();
4673 /* If there is unread keyboard input, also return. */
4675 && requeued_events_pending_p ())
4678 /* If we are not checking for keyboard input now,
4679 do process events (but don't run any timers).
4680 This is so that X events will be processed.
4681 Otherwise they may have to wait until polling takes place.
4682 That would causes delays in pasting selections, for example.
4684 (We used to do this only if wait_for_cell.) */
4685 if (read_kbd
== 0 && detect_input_pending ())
4687 swallow_events (do_display
);
4688 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4689 if (detect_input_pending ())
4694 /* Exit now if the cell we're waiting for became non-nil. */
4695 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4699 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4700 go read it. This can happen with X on BSD after logging out.
4701 In that case, there really is no input and no SIGIO,
4702 but select says there is input. */
4704 if (read_kbd
&& interrupt_input
4705 && keyboard_bit_set (&Available
) && ! noninteractive
)
4706 handle_input_available_signal (SIGIO
);
4710 got_some_input
|= nfds
> 0;
4712 /* If checking input just got us a size-change event from X,
4713 obey it now if we should. */
4714 if (read_kbd
|| ! NILP (wait_for_cell
))
4715 do_pending_window_change (0);
4717 /* Check for data from a process. */
4718 if (no_avail
|| nfds
== 0)
4721 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4723 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4725 && ((d
->condition
& FOR_READ
4726 && FD_ISSET (channel
, &Available
))
4727 || (d
->condition
& FOR_WRITE
4728 && FD_ISSET (channel
, &write_mask
))))
4729 d
->func (channel
, d
->data
);
4732 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4734 if (FD_ISSET (channel
, &Available
)
4735 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4736 && !FD_ISSET (channel
, &non_process_wait_mask
))
4740 /* If waiting for this channel, arrange to return as
4741 soon as no more input to be processed. No more
4743 if (wait_channel
== channel
)
4749 proc
= chan_process
[channel
];
4753 /* If this is a server stream socket, accept connection. */
4754 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4756 server_accept_connection (proc
, channel
);
4760 /* Read data from the process, starting with our
4761 buffered-ahead character if we have one. */
4763 nread
= read_process_output (proc
, channel
);
4766 /* Since read_process_output can run a filter,
4767 which can call accept-process-output,
4768 don't try to read from any other processes
4769 before doing the select again. */
4770 FD_ZERO (&Available
);
4773 redisplay_preserve_echo_area (12);
4776 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4779 else if (nread
== -1 && errno
== EAGAIN
)
4782 /* FIXME: Is this special case still needed? */
4783 /* Note that we cannot distinguish between no input
4784 available now and a closed pipe.
4785 With luck, a closed pipe will be accompanied by
4786 subprocess termination and SIGCHLD. */
4787 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4791 /* On some OSs with ptys, when the process on one end of
4792 a pty exits, the other end gets an error reading with
4793 errno = EIO instead of getting an EOF (0 bytes read).
4794 Therefore, if we get an error reading and errno =
4795 EIO, just continue, because the child process has
4796 exited and should clean itself up soon (e.g. when we
4798 else if (nread
== -1 && errno
== EIO
)
4800 struct Lisp_Process
*p
= XPROCESS (proc
);
4802 /* Clear the descriptor now, so we only raise the
4804 FD_CLR (channel
, &input_wait_mask
);
4805 FD_CLR (channel
, &non_keyboard_wait_mask
);
4809 /* If the EIO occurs on a pty, the SIGCHLD handler's
4810 waitpid call will not find the process object to
4811 delete. Do it here. */
4812 p
->tick
= ++process_tick
;
4813 pset_status (p
, Qfailed
);
4816 #endif /* HAVE_PTYS */
4817 /* If we can detect process termination, don't consider the
4818 process gone just because its pipe is closed. */
4819 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4823 /* Preserve status of processes already terminated. */
4824 XPROCESS (proc
)->tick
= ++process_tick
;
4825 deactivate_process (proc
);
4826 if (XPROCESS (proc
)->raw_status_new
)
4827 update_status (XPROCESS (proc
));
4828 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4829 pset_status (XPROCESS (proc
),
4830 list2 (Qexit
, make_number (256)));
4833 #ifdef NON_BLOCKING_CONNECT
4834 if (FD_ISSET (channel
, &Writeok
)
4835 && FD_ISSET (channel
, &connect_wait_mask
))
4837 struct Lisp_Process
*p
;
4839 FD_CLR (channel
, &connect_wait_mask
);
4840 FD_CLR (channel
, &write_mask
);
4841 if (--num_pending_connects
< 0)
4844 proc
= chan_process
[channel
];
4848 p
= XPROCESS (proc
);
4851 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4852 So only use it on systems where it is known to work. */
4854 socklen_t xlen
= sizeof (xerrno
);
4855 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4860 struct sockaddr pname
;
4861 int pnamelen
= sizeof (pname
);
4863 /* If connection failed, getpeername will fail. */
4865 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4867 /* Obtain connect failure code through error slippage. */
4870 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4877 p
->tick
= ++process_tick
;
4878 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
4879 deactivate_process (proc
);
4883 pset_status (p
, Qrun
);
4884 /* Execute the sentinel here. If we had relied on
4885 status_notify to do it later, it will read input
4886 from the process before calling the sentinel. */
4887 exec_sentinel (proc
, build_string ("open\n"));
4888 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4890 FD_SET (p
->infd
, &input_wait_mask
);
4891 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4895 #endif /* NON_BLOCKING_CONNECT */
4896 } /* End for each file descriptor. */
4897 } /* End while exit conditions not met. */
4899 unbind_to (count
, Qnil
);
4901 /* If calling from keyboard input, do not quit
4902 since we want to return C-g as an input character.
4903 Otherwise, do pending quit if requested. */
4906 /* Prevent input_pending from remaining set if we quit. */
4907 clear_input_pending ();
4911 return got_some_input
;
4914 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4917 read_process_output_call (Lisp_Object fun_and_args
)
4919 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4923 read_process_output_error_handler (Lisp_Object error_val
)
4925 cmd_error_internal (error_val
, "error in process filter: ");
4927 update_echo_area ();
4928 Fsleep_for (make_number (2), Qnil
);
4933 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
4935 struct coding_system
*coding
);
4937 /* Read pending output from the process channel,
4938 starting with our buffered-ahead character if we have one.
4939 Yield number of decoded characters read.
4941 This function reads at most 4096 characters.
4942 If you want to read all available subprocess output,
4943 you must call it repeatedly until it returns zero.
4945 The characters read are decoded according to PROC's coding-system
4949 read_process_output (Lisp_Object proc
, register int channel
)
4951 register ssize_t nbytes
;
4953 register struct Lisp_Process
*p
= XPROCESS (proc
);
4954 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4955 int carryover
= p
->decoding_carryover
;
4957 ptrdiff_t count
= SPECPDL_INDEX ();
4958 Lisp_Object odeactivate
;
4960 chars
= alloca (carryover
+ readmax
);
4962 /* See the comment above. */
4963 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4965 #ifdef DATAGRAM_SOCKETS
4966 /* We have a working select, so proc_buffered_char is always -1. */
4967 if (DATAGRAM_CHAN_P (channel
))
4969 socklen_t len
= datagram_address
[channel
].len
;
4970 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4971 0, datagram_address
[channel
].sa
, &len
);
4976 bool buffered
= proc_buffered_char
[channel
] >= 0;
4979 chars
[carryover
] = proc_buffered_char
[channel
];
4980 proc_buffered_char
[channel
] = -1;
4984 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
4985 readmax
- buffered
);
4988 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
4989 readmax
- buffered
);
4990 #ifdef ADAPTIVE_READ_BUFFERING
4991 if (nbytes
> 0 && p
->adaptive_read_buffering
)
4993 int delay
= p
->read_output_delay
;
4996 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4999 process_output_delay_count
++;
5000 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5003 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5005 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5007 process_output_delay_count
--;
5009 p
->read_output_delay
= delay
;
5012 p
->read_output_skip
= 1;
5013 process_output_skip
= 1;
5018 nbytes
+= buffered
&& nbytes
<= 0;
5021 p
->decoding_carryover
= 0;
5023 /* At this point, NBYTES holds number of bytes just received
5024 (including the one in proc_buffered_char[channel]). */
5027 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5029 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5032 /* Now set NBYTES how many bytes we must decode. */
5033 nbytes
+= carryover
;
5035 odeactivate
= Vdeactivate_mark
;
5036 /* There's no good reason to let process filters change the current
5037 buffer, and many callers of accept-process-output, sit-for, and
5038 friends don't expect current-buffer to be changed from under them. */
5039 record_unwind_current_buffer ();
5041 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5043 /* Handling the process output should not deactivate the mark. */
5044 Vdeactivate_mark
= odeactivate
;
5046 unbind_to (count
, Qnil
);
5051 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5053 struct coding_system
*coding
)
5055 Lisp_Object outstream
= p
->filter
;
5057 bool outer_running_asynch_code
= running_asynch_code
;
5058 int waiting
= waiting_for_user_input_p
;
5060 /* No need to gcpro these, because all we do with them later
5061 is test them for EQness, and none of them should be a string. */
5063 Lisp_Object obuffer
, okeymap
;
5064 XSETBUFFER (obuffer
, current_buffer
);
5065 okeymap
= BVAR (current_buffer
, keymap
);
5068 /* We inhibit quit here instead of just catching it so that
5069 hitting ^G when a filter happens to be running won't screw
5071 specbind (Qinhibit_quit
, Qt
);
5072 specbind (Qlast_nonmenu_event
, Qt
);
5074 /* In case we get recursively called,
5075 and we already saved the match data nonrecursively,
5076 save the same match data in safely recursive fashion. */
5077 if (outer_running_asynch_code
)
5080 /* Don't clobber the CURRENT match data, either! */
5081 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5082 restore_search_regs ();
5083 record_unwind_save_match_data ();
5084 Fset_match_data (tem
, Qt
);
5087 /* For speed, if a search happens within this code,
5088 save the match data in a special nonrecursive fashion. */
5089 running_asynch_code
= 1;
5091 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5092 text
= coding
->dst_object
;
5093 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5094 /* A new coding system might be found. */
5095 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5097 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5099 /* Don't call setup_coding_system for
5100 proc_decode_coding_system[channel] here. It is done in
5101 detect_coding called via decode_coding above. */
5103 /* If a coding system for encoding is not yet decided, we set
5104 it as the same as coding-system for decoding.
5106 But, before doing that we must check if
5107 proc_encode_coding_system[p->outfd] surely points to a
5108 valid memory because p->outfd will be changed once EOF is
5109 sent to the process. */
5110 if (NILP (p
->encode_coding_system
)
5111 && proc_encode_coding_system
[p
->outfd
])
5113 pset_encode_coding_system
5114 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5115 setup_coding_system (p
->encode_coding_system
,
5116 proc_encode_coding_system
[p
->outfd
]);
5120 if (coding
->carryover_bytes
> 0)
5122 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5123 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5124 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5125 coding
->carryover_bytes
);
5126 p
->decoding_carryover
= coding
->carryover_bytes
;
5128 if (SBYTES (text
) > 0)
5129 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5130 sometimes it's simply wrong to wrap (e.g. when called from
5131 accept-process-output). */
5132 internal_condition_case_1 (read_process_output_call
,
5133 list3 (outstream
, make_lisp_proc (p
), text
),
5134 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5135 read_process_output_error_handler
);
5137 /* If we saved the match data nonrecursively, restore it now. */
5138 restore_search_regs ();
5139 running_asynch_code
= outer_running_asynch_code
;
5141 /* Restore waiting_for_user_input_p as it was
5142 when we were called, in case the filter clobbered it. */
5143 waiting_for_user_input_p
= waiting
;
5145 #if 0 /* Call record_asynch_buffer_change unconditionally,
5146 because we might have changed minor modes or other things
5147 that affect key bindings. */
5148 if (! EQ (Fcurrent_buffer (), obuffer
)
5149 || ! EQ (current_buffer
->keymap
, okeymap
))
5151 /* But do it only if the caller is actually going to read events.
5152 Otherwise there's no need to make him wake up, and it could
5153 cause trouble (for example it would make sit_for return). */
5154 if (waiting_for_user_input_p
== -1)
5155 record_asynch_buffer_change ();
5158 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5159 Sinternal_default_process_filter
, 2, 2, 0,
5160 doc
: /* Function used as default process filter. */)
5161 (Lisp_Object proc
, Lisp_Object text
)
5163 struct Lisp_Process
*p
;
5166 CHECK_PROCESS (proc
);
5167 p
= XPROCESS (proc
);
5168 CHECK_STRING (text
);
5170 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5172 Lisp_Object old_read_only
;
5173 ptrdiff_t old_begv
, old_zv
;
5174 ptrdiff_t old_begv_byte
, old_zv_byte
;
5175 ptrdiff_t before
, before_byte
;
5176 ptrdiff_t opoint_byte
;
5179 Fset_buffer (p
->buffer
);
5181 opoint_byte
= PT_BYTE
;
5182 old_read_only
= BVAR (current_buffer
, read_only
);
5185 old_begv_byte
= BEGV_BYTE
;
5186 old_zv_byte
= ZV_BYTE
;
5188 bset_read_only (current_buffer
, Qnil
);
5190 /* Insert new output into buffer
5191 at the current end-of-output marker,
5192 thus preserving logical ordering of input and output. */
5193 if (XMARKER (p
->mark
)->buffer
)
5194 SET_PT_BOTH (clip_to_bounds (BEGV
,
5195 marker_position (p
->mark
), ZV
),
5196 clip_to_bounds (BEGV_BYTE
,
5197 marker_byte_position (p
->mark
),
5200 SET_PT_BOTH (ZV
, ZV_BYTE
);
5202 before_byte
= PT_BYTE
;
5204 /* If the output marker is outside of the visible region, save
5205 the restriction and widen. */
5206 if (! (BEGV
<= PT
&& PT
<= ZV
))
5209 /* Adjust the multibyteness of TEXT to that of the buffer. */
5210 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5211 != ! STRING_MULTIBYTE (text
))
5212 text
= (STRING_MULTIBYTE (text
)
5213 ? Fstring_as_unibyte (text
)
5214 : Fstring_to_multibyte (text
));
5215 /* Insert before markers in case we are inserting where
5216 the buffer's mark is, and the user's next command is Meta-y. */
5217 insert_from_string_before_markers (text
, 0, 0,
5218 SCHARS (text
), SBYTES (text
), 0);
5220 /* Make sure the process marker's position is valid when the
5221 process buffer is changed in the signal_after_change above.
5222 W3 is known to do that. */
5223 if (BUFFERP (p
->buffer
)
5224 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5225 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5227 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5229 update_mode_lines
++;
5231 /* Make sure opoint and the old restrictions
5232 float ahead of any new text just as point would. */
5233 if (opoint
>= before
)
5235 opoint
+= PT
- before
;
5236 opoint_byte
+= PT_BYTE
- before_byte
;
5238 if (old_begv
> before
)
5240 old_begv
+= PT
- before
;
5241 old_begv_byte
+= PT_BYTE
- before_byte
;
5243 if (old_zv
>= before
)
5245 old_zv
+= PT
- before
;
5246 old_zv_byte
+= PT_BYTE
- before_byte
;
5249 /* If the restriction isn't what it should be, set it. */
5250 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5251 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5253 bset_read_only (current_buffer
, old_read_only
);
5254 SET_PT_BOTH (opoint
, opoint_byte
);
5259 /* Sending data to subprocess. */
5261 /* In send_process, when a write fails temporarily,
5262 wait_reading_process_output is called. It may execute user code,
5263 e.g. timers, that attempts to write new data to the same process.
5264 We must ensure that data is sent in the right order, and not
5265 interspersed half-completed with other writes (Bug#10815). This is
5266 handled by the write_queue element of struct process. It is a list
5267 with each entry having the form
5269 (string . (offset . length))
5271 where STRING is a lisp string, OFFSET is the offset into the
5272 string's byte sequence from which we should begin to send, and
5273 LENGTH is the number of bytes left to send. */
5275 /* Create a new entry in write_queue.
5276 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5277 BUF is a pointer to the string sequence of the input_obj or a C
5278 string in case of Qt or Qnil. */
5281 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5282 const char *buf
, ptrdiff_t len
, bool front
)
5285 Lisp_Object entry
, obj
;
5287 if (STRINGP (input_obj
))
5289 offset
= buf
- SSDATA (input_obj
);
5295 obj
= make_unibyte_string (buf
, len
);
5298 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5301 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5303 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5306 /* Remove the first element in the write_queue of process P, put its
5307 contents in OBJ, BUF and LEN, and return true. If the
5308 write_queue is empty, return false. */
5311 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5312 const char **buf
, ptrdiff_t *len
)
5314 Lisp_Object entry
, offset_length
;
5317 if (NILP (p
->write_queue
))
5320 entry
= XCAR (p
->write_queue
);
5321 pset_write_queue (p
, XCDR (p
->write_queue
));
5323 *obj
= XCAR (entry
);
5324 offset_length
= XCDR (entry
);
5326 *len
= XINT (XCDR (offset_length
));
5327 offset
= XINT (XCAR (offset_length
));
5328 *buf
= SSDATA (*obj
) + offset
;
5333 /* Send some data to process PROC.
5334 BUF is the beginning of the data; LEN is the number of characters.
5335 OBJECT is the Lisp object that the data comes from. If OBJECT is
5336 nil or t, it means that the data comes from C string.
5338 If OBJECT is not nil, the data is encoded by PROC's coding-system
5339 for encoding before it is sent.
5341 This function can evaluate Lisp code and can garbage collect. */
5344 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5347 struct Lisp_Process
*p
= XPROCESS (proc
);
5349 struct coding_system
*coding
;
5351 if (p
->raw_status_new
)
5353 if (! EQ (p
->status
, Qrun
))
5354 error ("Process %s not running", SDATA (p
->name
));
5356 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5358 coding
= proc_encode_coding_system
[p
->outfd
];
5359 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5361 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5362 || (BUFFERP (object
)
5363 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5366 pset_encode_coding_system
5367 (p
, complement_process_encoding_system (p
->encode_coding_system
));
5368 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5370 /* The coding system for encoding was changed to raw-text
5371 because we sent a unibyte text previously. Now we are
5372 sending a multibyte text, thus we must encode it by the
5373 original coding system specified for the current process.
5375 Another reason we come here is that the coding system
5376 was just complemented and a new one was returned by
5377 complement_process_encoding_system. */
5378 setup_coding_system (p
->encode_coding_system
, coding
);
5379 Vlast_coding_system_used
= p
->encode_coding_system
;
5381 coding
->src_multibyte
= 1;
5385 coding
->src_multibyte
= 0;
5386 /* For sending a unibyte text, character code conversion should
5387 not take place but EOL conversion should. So, setup raw-text
5388 or one of the subsidiary if we have not yet done it. */
5389 if (CODING_REQUIRE_ENCODING (coding
))
5391 if (CODING_REQUIRE_FLUSHING (coding
))
5393 /* But, before changing the coding, we must flush out data. */
5394 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5395 send_process (proc
, "", 0, Qt
);
5396 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5398 setup_coding_system (raw_text_coding_system
5399 (Vlast_coding_system_used
),
5401 coding
->src_multibyte
= 0;
5404 coding
->dst_multibyte
= 0;
5406 if (CODING_REQUIRE_ENCODING (coding
))
5408 coding
->dst_object
= Qt
;
5409 if (BUFFERP (object
))
5411 ptrdiff_t from_byte
, from
, to
;
5412 ptrdiff_t save_pt
, save_pt_byte
;
5413 struct buffer
*cur
= current_buffer
;
5415 set_buffer_internal (XBUFFER (object
));
5416 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5418 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5419 from
= BYTE_TO_CHAR (from_byte
);
5420 to
= BYTE_TO_CHAR (from_byte
+ len
);
5421 TEMP_SET_PT_BOTH (from
, from_byte
);
5422 encode_coding_object (coding
, object
, from
, from_byte
,
5423 to
, from_byte
+ len
, Qt
);
5424 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5425 set_buffer_internal (cur
);
5427 else if (STRINGP (object
))
5429 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5430 SBYTES (object
), Qt
);
5434 coding
->dst_object
= make_unibyte_string (buf
, len
);
5435 coding
->produced
= len
;
5438 len
= coding
->produced
;
5439 object
= coding
->dst_object
;
5440 buf
= SSDATA (object
);
5443 /* If there is already data in the write_queue, put the new data
5444 in the back of queue. Otherwise, ignore it. */
5445 if (!NILP (p
->write_queue
))
5446 write_queue_push (p
, object
, buf
, len
, 0);
5448 do /* while !NILP (p->write_queue) */
5450 ptrdiff_t cur_len
= -1;
5451 const char *cur_buf
;
5452 Lisp_Object cur_object
;
5454 /* If write_queue is empty, ignore it. */
5455 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
5459 cur_object
= object
;
5464 /* Send this batch, using one or more write calls. */
5465 ptrdiff_t written
= 0;
5466 int outfd
= p
->outfd
;
5467 #ifdef DATAGRAM_SOCKETS
5468 if (DATAGRAM_CHAN_P (outfd
))
5470 rv
= sendto (outfd
, cur_buf
, cur_len
,
5471 0, datagram_address
[outfd
].sa
,
5472 datagram_address
[outfd
].len
);
5475 else if (errno
== EMSGSIZE
)
5476 report_file_error ("Sending datagram", proc
);
5483 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
5486 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
5487 rv
= (written
? 0 : -1);
5488 #ifdef ADAPTIVE_READ_BUFFERING
5489 if (p
->read_output_delay
> 0
5490 && p
->adaptive_read_buffering
== 1)
5492 p
->read_output_delay
= 0;
5493 process_output_delay_count
--;
5494 p
->read_output_skip
= 0;
5503 || errno
== EWOULDBLOCK
5506 /* Buffer is full. Wait, accepting input;
5507 that may allow the program
5508 to finish doing output and read more. */
5510 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5511 /* A gross hack to work around a bug in FreeBSD.
5512 In the following sequence, read(2) returns
5516 write(2) 954 bytes, get EAGAIN
5517 read(2) 1024 bytes in process_read_output
5518 read(2) 11 bytes in process_read_output
5520 That is, read(2) returns more bytes than have
5521 ever been written successfully. The 1033 bytes
5522 read are the 1022 bytes written successfully
5523 after processing (for example with CRs added if
5524 the terminal is set up that way which it is
5525 here). The same bytes will be seen again in a
5526 later read(2), without the CRs. */
5528 if (errno
== EAGAIN
)
5531 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5533 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5535 /* Put what we should have written in wait_queue. */
5536 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
5537 wait_reading_process_output (0, 20 * 1000 * 1000,
5538 0, 0, Qnil
, NULL
, 0);
5539 /* Reread queue, to see what is left. */
5542 else if (errno
== EPIPE
)
5544 p
->raw_status_new
= 0;
5545 pset_status (p
, list2 (Qexit
, make_number (256)));
5546 p
->tick
= ++process_tick
;
5547 deactivate_process (proc
);
5548 error ("process %s no longer connected to pipe; closed it",
5552 /* This is a real error. */
5553 report_file_error ("Writing to process", proc
);
5559 while (!NILP (p
->write_queue
));
5562 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5564 doc
: /* Send current contents of region as input to PROCESS.
5565 PROCESS may be a process, a buffer, the name of a process or buffer, or
5566 nil, indicating the current buffer's process.
5567 Called from program, takes three arguments, PROCESS, START and END.
5568 If the region is more than 500 characters long,
5569 it is sent in several bunches. This may happen even for shorter regions.
5570 Output from processes can arrive in between bunches. */)
5571 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5573 Lisp_Object proc
= get_process (process
);
5574 ptrdiff_t start_byte
, end_byte
;
5576 validate_region (&start
, &end
);
5578 start_byte
= CHAR_TO_BYTE (XINT (start
));
5579 end_byte
= CHAR_TO_BYTE (XINT (end
));
5581 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5582 move_gap_both (XINT (start
), start_byte
);
5584 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
5585 end_byte
- start_byte
, Fcurrent_buffer ());
5590 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5592 doc
: /* Send PROCESS the contents of STRING as input.
5593 PROCESS may be a process, a buffer, the name of a process or buffer, or
5594 nil, indicating the current buffer's process.
5595 If STRING is more than 500 characters long,
5596 it is sent in several bunches. This may happen even for shorter strings.
5597 Output from processes can arrive in between bunches. */)
5598 (Lisp_Object process
, Lisp_Object string
)
5601 CHECK_STRING (string
);
5602 proc
= get_process (process
);
5603 send_process (proc
, SSDATA (string
),
5604 SBYTES (string
), string
);
5608 /* Return the foreground process group for the tty/pty that
5609 the process P uses. */
5611 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5616 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5619 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5620 master side. Try the slave side. */
5621 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5625 ioctl (fd
, TIOCGPGRP
, &gid
);
5629 #endif /* defined (TIOCGPGRP ) */
5634 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5635 Sprocess_running_child_p
, 0, 1, 0,
5636 doc
: /* Return t if PROCESS has given the terminal to a child.
5637 If the operating system does not make it possible to find out,
5638 return t unconditionally. */)
5639 (Lisp_Object process
)
5641 /* Initialize in case ioctl doesn't exist or gives an error,
5642 in a way that will cause returning t. */
5645 struct Lisp_Process
*p
;
5647 proc
= get_process (process
);
5648 p
= XPROCESS (proc
);
5650 if (!EQ (p
->type
, Qreal
))
5651 error ("Process %s is not a subprocess",
5654 error ("Process %s is not active",
5657 gid
= emacs_get_tty_pgrp (p
);
5664 /* send a signal number SIGNO to PROCESS.
5665 If CURRENT_GROUP is t, that means send to the process group
5666 that currently owns the terminal being used to communicate with PROCESS.
5667 This is used for various commands in shell mode.
5668 If CURRENT_GROUP is lambda, that means send to the process group
5669 that currently owns the terminal, but only if it is NOT the shell itself.
5671 If NOMSG is false, insert signal-announcements into process's buffers
5674 If we can, we try to signal PROCESS by sending control characters
5675 down the pty. This allows us to signal inferiors who have changed
5676 their uid, for which kill would return an EPERM error. */
5679 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5683 struct Lisp_Process
*p
;
5687 proc
= get_process (process
);
5688 p
= XPROCESS (proc
);
5690 if (!EQ (p
->type
, Qreal
))
5691 error ("Process %s is not a subprocess",
5694 error ("Process %s is not active",
5698 current_group
= Qnil
;
5700 /* If we are using pgrps, get a pgrp number and make it negative. */
5701 if (NILP (current_group
))
5702 /* Send the signal to the shell's process group. */
5706 #ifdef SIGNALS_VIA_CHARACTERS
5707 /* If possible, send signals to the entire pgrp
5708 by sending an input character to it. */
5711 cc_t
*sig_char
= NULL
;
5713 tcgetattr (p
->infd
, &t
);
5718 sig_char
= &t
.c_cc
[VINTR
];
5722 sig_char
= &t
.c_cc
[VQUIT
];
5726 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5727 sig_char
= &t
.c_cc
[VSWTCH
];
5729 sig_char
= &t
.c_cc
[VSUSP
];
5734 if (sig_char
&& *sig_char
!= CDISABLE
)
5736 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5739 /* If we can't send the signal with a character,
5740 fall through and send it another way. */
5742 /* The code above may fall through if it can't
5743 handle the signal. */
5744 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5747 /* Get the current pgrp using the tty itself, if we have that.
5748 Otherwise, use the pty to get the pgrp.
5749 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5750 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5751 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5752 His patch indicates that if TIOCGPGRP returns an error, then
5753 we should just assume that p->pid is also the process group id. */
5755 gid
= emacs_get_tty_pgrp (p
);
5758 /* If we can't get the information, assume
5759 the shell owns the tty. */
5762 /* It is not clear whether anything really can set GID to -1.
5763 Perhaps on some system one of those ioctls can or could do so.
5764 Or perhaps this is vestigial. */
5767 #else /* ! defined (TIOCGPGRP ) */
5768 /* Can't select pgrps on this system, so we know that
5769 the child itself heads the pgrp. */
5771 #endif /* ! defined (TIOCGPGRP ) */
5773 /* If current_group is lambda, and the shell owns the terminal,
5774 don't send any signal. */
5775 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5783 p
->raw_status_new
= 0;
5784 pset_status (p
, Qrun
);
5785 p
->tick
= ++process_tick
;
5788 status_notify (NULL
);
5789 redisplay_preserve_echo_area (13);
5792 #endif /* ! defined (SIGCONT) */
5796 flush_pending_output (p
->infd
);
5800 /* If we don't have process groups, send the signal to the immediate
5801 subprocess. That isn't really right, but it's better than any
5802 obvious alternative. */
5805 kill (p
->pid
, signo
);
5809 /* gid may be a pid, or minus a pgrp's number */
5811 if (!NILP (current_group
))
5813 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5821 #else /* ! defined (TIOCSIGSEND) */
5823 #endif /* ! defined (TIOCSIGSEND) */
5826 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5827 doc
: /* Interrupt process PROCESS.
5828 PROCESS may be a process, a buffer, or the name of a process or buffer.
5829 No arg or nil means current buffer's process.
5830 Second arg CURRENT-GROUP non-nil means send signal to
5831 the current process-group of the process's controlling terminal
5832 rather than to the process's own process group.
5833 If the process is a shell, this means interrupt current subjob
5834 rather than the shell.
5836 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5837 don't send the signal. */)
5838 (Lisp_Object process
, Lisp_Object current_group
)
5840 process_send_signal (process
, SIGINT
, current_group
, 0);
5844 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5845 doc
: /* Kill process PROCESS. May be process or name of one.
5846 See function `interrupt-process' for more details on usage. */)
5847 (Lisp_Object process
, Lisp_Object current_group
)
5849 process_send_signal (process
, SIGKILL
, current_group
, 0);
5853 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5854 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5855 See function `interrupt-process' for more details on usage. */)
5856 (Lisp_Object process
, Lisp_Object current_group
)
5858 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5862 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5863 doc
: /* Stop process PROCESS. May be process or name of one.
5864 See function `interrupt-process' for more details on usage.
5865 If PROCESS is a network or serial process, inhibit handling of incoming
5867 (Lisp_Object process
, Lisp_Object current_group
)
5869 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5871 struct Lisp_Process
*p
;
5873 p
= XPROCESS (process
);
5874 if (NILP (p
->command
)
5877 FD_CLR (p
->infd
, &input_wait_mask
);
5878 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5880 pset_command (p
, Qt
);
5884 error ("No SIGTSTP support");
5886 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5891 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5892 doc
: /* Continue process PROCESS. May be process or name of one.
5893 See function `interrupt-process' for more details on usage.
5894 If PROCESS is a network or serial process, resume handling of incoming
5896 (Lisp_Object process
, Lisp_Object current_group
)
5898 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5900 struct Lisp_Process
*p
;
5902 p
= XPROCESS (process
);
5903 if (EQ (p
->command
, Qt
)
5905 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5907 FD_SET (p
->infd
, &input_wait_mask
);
5908 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5910 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5911 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5912 #else /* not WINDOWSNT */
5913 tcflush (p
->infd
, TCIFLUSH
);
5914 #endif /* not WINDOWSNT */
5916 pset_command (p
, Qnil
);
5920 process_send_signal (process
, SIGCONT
, current_group
, 0);
5922 error ("No SIGCONT support");
5927 /* Return the integer value of the signal whose abbreviation is ABBR,
5928 or a negative number if there is no such signal. */
5930 abbr_to_signal (char const *name
)
5933 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
5935 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5938 for (i
= 0; i
< sizeof sigbuf
; i
++)
5940 sigbuf
[i
] = c_toupper (name
[i
]);
5942 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
5948 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5949 2, 2, "sProcess (name or number): \nnSignal code: ",
5950 doc
: /* Send PROCESS the signal with code SIGCODE.
5951 PROCESS may also be a number specifying the process id of the
5952 process to signal; in this case, the process need not be a child of
5954 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5955 (Lisp_Object process
, Lisp_Object sigcode
)
5960 if (STRINGP (process
))
5962 Lisp_Object tem
= Fget_process (process
);
5965 Lisp_Object process_number
=
5966 string_to_number (SSDATA (process
), 10, 1);
5967 if (INTEGERP (process_number
) || FLOATP (process_number
))
5968 tem
= process_number
;
5972 else if (!NUMBERP (process
))
5973 process
= get_process (process
);
5978 if (NUMBERP (process
))
5979 CONS_TO_INTEGER (process
, pid_t
, pid
);
5982 CHECK_PROCESS (process
);
5983 pid
= XPROCESS (process
)->pid
;
5985 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5988 if (INTEGERP (sigcode
))
5990 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
5991 signo
= XINT (sigcode
);
5997 CHECK_SYMBOL (sigcode
);
5998 name
= SSDATA (SYMBOL_NAME (sigcode
));
6000 signo
= abbr_to_signal (name
);
6002 error ("Undefined signal name %s", name
);
6005 return make_number (kill (pid
, signo
));
6008 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6009 doc
: /* Make PROCESS see end-of-file in its input.
6010 EOF comes after any text already sent to it.
6011 PROCESS may be a process, a buffer, the name of a process or buffer, or
6012 nil, indicating the current buffer's process.
6013 If PROCESS is a network connection, or is a process communicating
6014 through a pipe (as opposed to a pty), then you cannot send any more
6015 text to PROCESS after you call this function.
6016 If PROCESS is a serial process, wait until all output written to the
6017 process has been transmitted to the serial port. */)
6018 (Lisp_Object process
)
6021 struct coding_system
*coding
;
6023 if (DATAGRAM_CONN_P (process
))
6026 proc
= get_process (process
);
6027 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6029 /* Make sure the process is really alive. */
6030 if (XPROCESS (proc
)->raw_status_new
)
6031 update_status (XPROCESS (proc
));
6032 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6033 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6035 if (CODING_REQUIRE_FLUSHING (coding
))
6037 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6038 send_process (proc
, "", 0, Qnil
);
6041 if (XPROCESS (proc
)->pty_flag
)
6042 send_process (proc
, "\004", 1, Qnil
);
6043 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6046 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6047 report_file_error ("Failed tcdrain", Qnil
);
6048 #endif /* not WINDOWSNT */
6049 /* Do nothing on Windows because writes are blocking. */
6053 int old_outfd
= XPROCESS (proc
)->outfd
;
6056 #ifdef HAVE_SHUTDOWN
6057 /* If this is a network connection, or socketpair is used
6058 for communication with the subprocess, call shutdown to cause EOF.
6059 (In some old system, shutdown to socketpair doesn't work.
6060 Then we just can't win.) */
6061 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6062 || XPROCESS (proc
)->infd
== old_outfd
)
6063 shutdown (old_outfd
, 1);
6065 close_process_fd (&XPROCESS (proc
)->open_fd
[WRITE_TO_SUBPROCESS
]);
6066 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6068 report_file_error ("Opening null device", Qnil
);
6069 XPROCESS (proc
)->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6070 XPROCESS (proc
)->outfd
= new_outfd
;
6072 if (!proc_encode_coding_system
[new_outfd
])
6073 proc_encode_coding_system
[new_outfd
]
6074 = xmalloc (sizeof (struct coding_system
));
6075 *proc_encode_coding_system
[new_outfd
]
6076 = *proc_encode_coding_system
[old_outfd
];
6077 memset (proc_encode_coding_system
[old_outfd
], 0,
6078 sizeof (struct coding_system
));
6083 /* The main Emacs thread records child processes in three places:
6085 - Vprocess_alist, for asynchronous subprocesses, which are child
6086 processes visible to Lisp.
6088 - deleted_pid_list, for child processes invisible to Lisp,
6089 typically because of delete-process. These are recorded so that
6090 the processes can be reaped when they exit, so that the operating
6091 system's process table is not cluttered by zombies.
6093 - the local variable PID in Fcall_process, call_process_cleanup and
6094 call_process_kill, for synchronous subprocesses.
6095 record_unwind_protect is used to make sure this process is not
6096 forgotten: if the user interrupts call-process and the child
6097 process refuses to exit immediately even with two C-g's,
6098 call_process_kill adds PID's contents to deleted_pid_list before
6101 The main Emacs thread invokes waitpid only on child processes that
6102 it creates and that have not been reaped. This avoid races on
6103 platforms such as GTK, where other threads create their own
6104 subprocesses which the main thread should not reap. For example,
6105 if the main thread attempted to reap an already-reaped child, it
6106 might inadvertently reap a GTK-created process that happened to
6107 have the same process ID. */
6109 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6110 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6111 keep track of its own children. GNUstep is similar. */
6113 static void dummy_handler (int sig
) {}
6114 static signal_handler_t
volatile lib_child_handler
;
6116 /* Handle a SIGCHLD signal by looking for known child processes of
6117 Emacs whose status have changed. For each one found, record its
6120 All we do is change the status; we do not run sentinels or print
6121 notifications. That is saved for the next time keyboard input is
6122 done, in order to avoid timing errors.
6124 ** WARNING: this can be called during garbage collection.
6125 Therefore, it must not be fooled by the presence of mark bits in
6128 ** USG WARNING: Although it is not obvious from the documentation
6129 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6130 signal() before executing at least one wait(), otherwise the
6131 handler will be called again, resulting in an infinite loop. The
6132 relevant portion of the documentation reads "SIGCLD signals will be
6133 queued and the signal-catching function will be continually
6134 reentered until the queue is empty". Invoking signal() causes the
6135 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6138 ** Malloc WARNING: This should never call malloc either directly or
6139 indirectly; if it does, that is a bug */
6142 handle_child_signal (int sig
)
6144 Lisp_Object tail
, proc
;
6146 /* Find the process that signaled us, and record its status. */
6148 /* The process can have been deleted by Fdelete_process, or have
6149 been started asynchronously by Fcall_process. */
6150 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6152 bool all_pids_are_fixnums
6153 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6154 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6155 Lisp_Object head
= XCAR (tail
);
6156 Lisp_Object xpid
= XCAR (head
);
6157 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6160 if (INTEGERP (xpid
))
6161 deleted_pid
= XINT (xpid
);
6163 deleted_pid
= XFLOAT_DATA (xpid
);
6164 if (child_status_changed (deleted_pid
, 0, 0))
6166 if (STRINGP (XCDR (head
)))
6167 unlink (SSDATA (XCDR (head
)));
6168 XSETCAR (tail
, Qnil
);
6173 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6174 FOR_EACH_PROCESS (tail
, proc
)
6176 struct Lisp_Process
*p
= XPROCESS (proc
);
6180 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6182 /* Change the status of the process that was found. */
6183 p
->tick
= ++process_tick
;
6184 p
->raw_status
= status
;
6185 p
->raw_status_new
= 1;
6187 /* If process has terminated, stop waiting for its output. */
6188 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6190 bool clear_desc_flag
= 0;
6193 clear_desc_flag
= 1;
6195 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6196 if (clear_desc_flag
)
6198 FD_CLR (p
->infd
, &input_wait_mask
);
6199 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6205 lib_child_handler (sig
);
6206 #ifdef NS_IMPL_GNUSTEP
6207 /* NSTask in GNUStep sets its child handler each time it is called.
6208 So we must re-set ours. */
6209 catch_child_signal();
6214 deliver_child_signal (int sig
)
6216 deliver_process_signal (sig
, handle_child_signal
);
6221 exec_sentinel_error_handler (Lisp_Object error_val
)
6223 cmd_error_internal (error_val
, "error in process sentinel: ");
6225 update_echo_area ();
6226 Fsleep_for (make_number (2), Qnil
);
6231 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6233 Lisp_Object sentinel
, odeactivate
;
6234 struct Lisp_Process
*p
= XPROCESS (proc
);
6235 ptrdiff_t count
= SPECPDL_INDEX ();
6236 bool outer_running_asynch_code
= running_asynch_code
;
6237 int waiting
= waiting_for_user_input_p
;
6239 if (inhibit_sentinels
)
6242 /* No need to gcpro these, because all we do with them later
6243 is test them for EQness, and none of them should be a string. */
6244 odeactivate
= Vdeactivate_mark
;
6246 Lisp_Object obuffer
, okeymap
;
6247 XSETBUFFER (obuffer
, current_buffer
);
6248 okeymap
= BVAR (current_buffer
, keymap
);
6251 /* There's no good reason to let sentinels change the current
6252 buffer, and many callers of accept-process-output, sit-for, and
6253 friends don't expect current-buffer to be changed from under them. */
6254 record_unwind_current_buffer ();
6256 sentinel
= p
->sentinel
;
6258 /* Inhibit quit so that random quits don't screw up a running filter. */
6259 specbind (Qinhibit_quit
, Qt
);
6260 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6262 /* In case we get recursively called,
6263 and we already saved the match data nonrecursively,
6264 save the same match data in safely recursive fashion. */
6265 if (outer_running_asynch_code
)
6268 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6269 restore_search_regs ();
6270 record_unwind_save_match_data ();
6271 Fset_match_data (tem
, Qt
);
6274 /* For speed, if a search happens within this code,
6275 save the match data in a special nonrecursive fashion. */
6276 running_asynch_code
= 1;
6278 internal_condition_case_1 (read_process_output_call
,
6279 list3 (sentinel
, proc
, reason
),
6280 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6281 exec_sentinel_error_handler
);
6283 /* If we saved the match data nonrecursively, restore it now. */
6284 restore_search_regs ();
6285 running_asynch_code
= outer_running_asynch_code
;
6287 Vdeactivate_mark
= odeactivate
;
6289 /* Restore waiting_for_user_input_p as it was
6290 when we were called, in case the filter clobbered it. */
6291 waiting_for_user_input_p
= waiting
;
6294 if (! EQ (Fcurrent_buffer (), obuffer
)
6295 || ! EQ (current_buffer
->keymap
, okeymap
))
6297 /* But do it only if the caller is actually going to read events.
6298 Otherwise there's no need to make him wake up, and it could
6299 cause trouble (for example it would make sit_for return). */
6300 if (waiting_for_user_input_p
== -1)
6301 record_asynch_buffer_change ();
6303 unbind_to (count
, Qnil
);
6306 /* Report all recent events of a change in process status
6307 (either run the sentinel or output a message).
6308 This is usually done while Emacs is waiting for keyboard input
6309 but can be done at other times. */
6312 status_notify (struct Lisp_Process
*deleting_process
)
6314 register Lisp_Object proc
;
6315 Lisp_Object tail
, msg
;
6316 struct gcpro gcpro1
, gcpro2
;
6320 /* We need to gcpro tail; if read_process_output calls a filter
6321 which deletes a process and removes the cons to which tail points
6322 from Vprocess_alist, and then causes a GC, tail is an unprotected
6326 /* Set this now, so that if new processes are created by sentinels
6327 that we run, we get called again to handle their status changes. */
6328 update_tick
= process_tick
;
6330 FOR_EACH_PROCESS (tail
, proc
)
6333 register struct Lisp_Process
*p
= XPROCESS (proc
);
6335 if (p
->tick
!= p
->update_tick
)
6337 p
->update_tick
= p
->tick
;
6339 /* If process is still active, read any output that remains. */
6340 while (! EQ (p
->filter
, Qt
)
6341 && ! EQ (p
->status
, Qconnect
)
6342 && ! EQ (p
->status
, Qlisten
)
6343 /* Network or serial process not stopped: */
6344 && ! EQ (p
->command
, Qt
)
6346 && p
!= deleting_process
6347 && read_process_output (proc
, p
->infd
) > 0);
6349 /* Get the text to use for the message. */
6350 if (p
->raw_status_new
)
6352 msg
= status_message (p
);
6354 /* If process is terminated, deactivate it or delete it. */
6356 if (CONSP (p
->status
))
6357 symbol
= XCAR (p
->status
);
6359 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6360 || EQ (symbol
, Qclosed
))
6362 if (delete_exited_processes
)
6363 remove_process (proc
);
6365 deactivate_process (proc
);
6368 /* The actions above may have further incremented p->tick.
6369 So set p->update_tick again so that an error in the sentinel will
6370 not cause this code to be run again. */
6371 p
->update_tick
= p
->tick
;
6372 /* Now output the message suitably. */
6373 exec_sentinel (proc
, msg
);
6377 update_mode_lines
++; /* In case buffers use %s in mode-line-format. */
6381 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
6382 Sinternal_default_process_sentinel
, 2, 2, 0,
6383 doc
: /* Function used as default sentinel for processes. */)
6384 (Lisp_Object proc
, Lisp_Object msg
)
6386 Lisp_Object buffer
, symbol
;
6387 struct Lisp_Process
*p
;
6388 CHECK_PROCESS (proc
);
6389 p
= XPROCESS (proc
);
6393 symbol
= XCAR (symbol
);
6395 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6398 struct buffer
*old
= current_buffer
;
6399 ptrdiff_t opoint
, opoint_byte
;
6400 ptrdiff_t before
, before_byte
;
6402 /* Avoid error if buffer is deleted
6403 (probably that's why the process is dead, too). */
6404 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
6406 Fset_buffer (buffer
);
6408 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
6409 msg
= (code_convert_string_norecord
6410 (msg
, Vlocale_coding_system
, 1));
6413 opoint_byte
= PT_BYTE
;
6414 /* Insert new output into buffer
6415 at the current end-of-output marker,
6416 thus preserving logical ordering of input and output. */
6417 if (XMARKER (p
->mark
)->buffer
)
6418 Fgoto_char (p
->mark
);
6420 SET_PT_BOTH (ZV
, ZV_BYTE
);
6423 before_byte
= PT_BYTE
;
6425 tem
= BVAR (current_buffer
, read_only
);
6426 bset_read_only (current_buffer
, Qnil
);
6427 insert_string ("\nProcess ");
6428 { /* FIXME: temporary kludge. */
6429 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
6430 insert_string (" ");
6432 bset_read_only (current_buffer
, tem
);
6433 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6435 if (opoint
>= before
)
6436 SET_PT_BOTH (opoint
+ (PT
- before
),
6437 opoint_byte
+ (PT_BYTE
- before_byte
));
6439 SET_PT_BOTH (opoint
, opoint_byte
);
6441 set_buffer_internal (old
);
6447 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6448 Sset_process_coding_system
, 1, 3, 0,
6449 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6450 DECODING will be used to decode subprocess output and ENCODING to
6451 encode subprocess input. */)
6452 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6454 register struct Lisp_Process
*p
;
6456 CHECK_PROCESS (process
);
6457 p
= XPROCESS (process
);
6459 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6461 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6462 Fcheck_coding_system (decoding
);
6463 Fcheck_coding_system (encoding
);
6464 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6465 pset_decode_coding_system (p
, decoding
);
6466 pset_encode_coding_system (p
, encoding
);
6467 setup_process_coding_systems (process
);
6472 DEFUN ("process-coding-system",
6473 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6474 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6475 (register Lisp_Object process
)
6477 CHECK_PROCESS (process
);
6478 return Fcons (XPROCESS (process
)->decode_coding_system
,
6479 XPROCESS (process
)->encode_coding_system
);
6482 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6483 Sset_process_filter_multibyte
, 2, 2, 0,
6484 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6485 If FLAG is non-nil, the filter is given multibyte strings.
6486 If FLAG is nil, the filter is given unibyte strings. In this case,
6487 all character code conversion except for end-of-line conversion is
6489 (Lisp_Object process
, Lisp_Object flag
)
6491 register struct Lisp_Process
*p
;
6493 CHECK_PROCESS (process
);
6494 p
= XPROCESS (process
);
6496 pset_decode_coding_system
6497 (p
, raw_text_coding_system (p
->decode_coding_system
));
6498 setup_process_coding_systems (process
);
6503 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6504 Sprocess_filter_multibyte_p
, 1, 1, 0,
6505 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6506 (Lisp_Object process
)
6508 register struct Lisp_Process
*p
;
6509 struct coding_system
*coding
;
6511 CHECK_PROCESS (process
);
6512 p
= XPROCESS (process
);
6513 coding
= proc_decode_coding_system
[p
->infd
];
6514 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6523 add_gpm_wait_descriptor (int desc
)
6525 add_keyboard_wait_descriptor (desc
);
6529 delete_gpm_wait_descriptor (int desc
)
6531 delete_keyboard_wait_descriptor (desc
);
6536 # ifdef USABLE_SIGIO
6538 /* Return true if *MASK has a bit set
6539 that corresponds to one of the keyboard input descriptors. */
6542 keyboard_bit_set (fd_set
*mask
)
6546 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6547 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6548 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6555 #else /* not subprocesses */
6557 /* Defined on msdos.c. */
6558 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6559 EMACS_TIME
*, void *);
6561 /* Implementation of wait_reading_process_output, assuming that there
6562 are no subprocesses. Used only by the MS-DOS build.
6564 Wait for timeout to elapse and/or keyboard input to be available.
6568 If negative, gobble data immediately available but don't wait for any.
6571 an additional duration to wait, measured in nanoseconds
6572 If TIME_LIMIT is zero, then:
6573 If NSECS == 0, there is no limit.
6574 If NSECS > 0, the timeout consists of NSECS only.
6575 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
6578 0 to ignore keyboard input, or
6579 1 to return when input is available, or
6580 -1 means caller will actually read the input, so don't throw to
6583 see full version for other parameters. We know that wait_proc will
6584 always be NULL, since `subprocesses' isn't defined.
6586 DO_DISPLAY means redisplay should be done to show subprocess
6587 output that arrives.
6589 Return true if we received input from any process. */
6592 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
6594 Lisp_Object wait_for_cell
,
6595 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6598 EMACS_TIME end_time
, timeout
;
6605 else if (TYPE_MAXIMUM (time_t) < time_limit
)
6606 time_limit
= TYPE_MAXIMUM (time_t);
6608 /* What does time_limit really mean? */
6609 if (time_limit
|| nsecs
> 0)
6611 timeout
= make_emacs_time (time_limit
, nsecs
);
6612 end_time
= add_emacs_time (current_emacs_time (), timeout
);
6615 /* Turn off periodic alarms (in case they are in use)
6616 and then turn off any other atimers,
6617 because the select emulator uses alarms. */
6619 turn_on_atimers (0);
6623 bool timeout_reduced_for_timers
= 0;
6624 SELECT_TYPE waitchannels
;
6627 /* If calling from keyboard input, do not quit
6628 since we want to return C-g as an input character.
6629 Otherwise, do pending quit if requested. */
6633 /* Exit now if the cell we're waiting for became non-nil. */
6634 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6637 /* Compute time from now till when time limit is up. */
6638 /* Exit if already run out. */
6641 /* A negative timeout means
6642 gobble output available now
6643 but don't wait at all. */
6645 timeout
= make_emacs_time (0, 0);
6647 else if (time_limit
|| nsecs
> 0)
6649 EMACS_TIME now
= current_emacs_time ();
6650 if (EMACS_TIME_LE (end_time
, now
))
6652 timeout
= sub_emacs_time (end_time
, now
);
6656 timeout
= make_emacs_time (100000, 0);
6659 /* If our caller will not immediately handle keyboard events,
6660 run timer events directly.
6661 (Callers that will immediately read keyboard events
6662 call timer_delay on their own.) */
6663 if (NILP (wait_for_cell
))
6665 EMACS_TIME timer_delay
;
6669 unsigned old_timers_run
= timers_run
;
6670 timer_delay
= timer_check ();
6671 if (timers_run
!= old_timers_run
&& do_display
)
6672 /* We must retry, since a timer may have requeued itself
6673 and that could alter the time delay. */
6674 redisplay_preserve_echo_area (14);
6678 while (!detect_input_pending ());
6680 /* If there is unread keyboard input, also return. */
6682 && requeued_events_pending_p ())
6685 if (EMACS_TIME_VALID_P (timer_delay
) && nsecs
>= 0)
6687 if (EMACS_TIME_LT (timer_delay
, timeout
))
6689 timeout
= timer_delay
;
6690 timeout_reduced_for_timers
= 1;
6695 /* Cause C-g and alarm signals to take immediate action,
6696 and cause input available signals to zero out timeout. */
6698 set_waiting_for_input (&timeout
);
6700 /* If a frame has been newly mapped and needs updating,
6701 reprocess its display stuff. */
6702 if (frame_garbaged
&& do_display
)
6704 clear_waiting_for_input ();
6705 redisplay_preserve_echo_area (15);
6707 set_waiting_for_input (&timeout
);
6710 /* Wait till there is something to do. */
6711 FD_ZERO (&waitchannels
);
6712 if (read_kbd
&& detect_input_pending ())
6716 if (read_kbd
|| !NILP (wait_for_cell
))
6717 FD_SET (0, &waitchannels
);
6718 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
6723 /* Make C-g and alarm signals set flags again */
6724 clear_waiting_for_input ();
6726 /* If we woke up due to SIGWINCH, actually change size now. */
6727 do_pending_window_change (0);
6729 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
6730 /* We waited the full specified time, so return now. */
6735 /* If the system call was interrupted, then go around the
6737 if (xerrno
== EINTR
)
6738 FD_ZERO (&waitchannels
);
6740 report_file_errno ("Failed select", Qnil
, xerrno
);
6743 /* Check for keyboard input */
6746 && detect_input_pending_run_timers (do_display
))
6748 swallow_events (do_display
);
6749 if (detect_input_pending_run_timers (do_display
))
6753 /* If there is unread keyboard input, also return. */
6755 && requeued_events_pending_p ())
6758 /* If wait_for_cell. check for keyboard input
6759 but don't run any timers.
6760 ??? (It seems wrong to me to check for keyboard
6761 input at all when wait_for_cell, but the code
6762 has been this way since July 1994.
6763 Try changing this after version 19.31.) */
6764 if (! NILP (wait_for_cell
)
6765 && detect_input_pending ())
6767 swallow_events (do_display
);
6768 if (detect_input_pending ())
6772 /* Exit now if the cell we're waiting for became non-nil. */
6773 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6782 #endif /* not subprocesses */
6784 /* The following functions are needed even if async subprocesses are
6785 not supported. Some of them are no-op stubs in that case. */
6787 /* Add DESC to the set of keyboard input descriptors. */
6790 add_keyboard_wait_descriptor (int desc
)
6792 #ifdef subprocesses /* actually means "not MSDOS" */
6793 FD_SET (desc
, &input_wait_mask
);
6794 FD_SET (desc
, &non_process_wait_mask
);
6795 if (desc
> max_input_desc
)
6796 max_input_desc
= desc
;
6800 /* From now on, do not expect DESC to give keyboard input. */
6803 delete_keyboard_wait_descriptor (int desc
)
6806 FD_CLR (desc
, &input_wait_mask
);
6807 FD_CLR (desc
, &non_process_wait_mask
);
6808 delete_input_desc (desc
);
6812 /* Setup coding systems of PROCESS. */
6815 setup_process_coding_systems (Lisp_Object process
)
6818 struct Lisp_Process
*p
= XPROCESS (process
);
6820 int outch
= p
->outfd
;
6821 Lisp_Object coding_system
;
6823 if (inch
< 0 || outch
< 0)
6826 if (!proc_decode_coding_system
[inch
])
6827 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
6828 coding_system
= p
->decode_coding_system
;
6829 if (EQ (p
->filter
, Qinternal_default_process_filter
)
6830 && BUFFERP (p
->buffer
))
6832 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6833 coding_system
= raw_text_coding_system (coding_system
);
6835 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6837 if (!proc_encode_coding_system
[outch
])
6838 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
6839 setup_coding_system (p
->encode_coding_system
,
6840 proc_encode_coding_system
[outch
]);
6844 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6845 doc
: /* Return the (or a) process associated with BUFFER.
6846 BUFFER may be a buffer or the name of one. */)
6847 (register Lisp_Object buffer
)
6850 register Lisp_Object buf
, tail
, proc
;
6852 if (NILP (buffer
)) return Qnil
;
6853 buf
= Fget_buffer (buffer
);
6854 if (NILP (buf
)) return Qnil
;
6856 FOR_EACH_PROCESS (tail
, proc
)
6857 if (EQ (XPROCESS (proc
)->buffer
, buf
))
6859 #endif /* subprocesses */
6863 DEFUN ("process-inherit-coding-system-flag",
6864 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6866 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6867 If this flag is t, `buffer-file-coding-system' of the buffer
6868 associated with PROCESS will inherit the coding system used to decode
6869 the process output. */)
6870 (register Lisp_Object process
)
6873 CHECK_PROCESS (process
);
6874 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6876 /* Ignore the argument and return the value of
6877 inherit-process-coding-system. */
6878 return inherit_process_coding_system
? Qt
: Qnil
;
6882 /* Kill all processes associated with `buffer'.
6883 If `buffer' is nil, kill all processes */
6886 kill_buffer_processes (Lisp_Object buffer
)
6889 Lisp_Object tail
, proc
;
6891 FOR_EACH_PROCESS (tail
, proc
)
6892 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
6894 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6895 Fdelete_process (proc
);
6896 else if (XPROCESS (proc
)->infd
>= 0)
6897 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6899 #else /* subprocesses */
6900 /* Since we have no subprocesses, this does nothing. */
6901 #endif /* subprocesses */
6904 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
6905 Swaiting_for_user_input_p
, 0, 0, 0,
6906 doc
: /* Return non-nil if Emacs is waiting for input from the user.
6907 This is intended for use by asynchronous process output filters and sentinels. */)
6911 return (waiting_for_user_input_p
? Qt
: Qnil
);
6917 /* Stop reading input from keyboard sources. */
6920 hold_keyboard_input (void)
6925 /* Resume reading input from keyboard sources. */
6928 unhold_keyboard_input (void)
6933 /* Return true if keyboard input is on hold, zero otherwise. */
6936 kbd_on_hold_p (void)
6938 return kbd_is_on_hold
;
6942 /* Enumeration of and access to system processes a-la ps(1). */
6944 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
6946 doc
: /* Return a list of numerical process IDs of all running processes.
6947 If this functionality is unsupported, return nil.
6949 See `process-attributes' for getting attributes of a process given its ID. */)
6952 return list_system_processes ();
6955 DEFUN ("process-attributes", Fprocess_attributes
,
6956 Sprocess_attributes
, 1, 1, 0,
6957 doc
: /* Return attributes of the process given by its PID, a number.
6959 Value is an alist where each element is a cons cell of the form
6963 If this functionality is unsupported, the value is nil.
6965 See `list-system-processes' for getting a list of all process IDs.
6967 The KEYs of the attributes that this function may return are listed
6968 below, together with the type of the associated VALUE (in parentheses).
6969 Not all platforms support all of these attributes; unsupported
6970 attributes will not appear in the returned alist.
6971 Unless explicitly indicated otherwise, numbers can have either
6972 integer or floating point values.
6974 euid -- Effective user User ID of the process (number)
6975 user -- User name corresponding to euid (string)
6976 egid -- Effective user Group ID of the process (number)
6977 group -- Group name corresponding to egid (string)
6978 comm -- Command name (executable name only) (string)
6979 state -- Process state code, such as "S", "R", or "T" (string)
6980 ppid -- Parent process ID (number)
6981 pgrp -- Process group ID (number)
6982 sess -- Session ID, i.e. process ID of session leader (number)
6983 ttname -- Controlling tty name (string)
6984 tpgid -- ID of foreground process group on the process's tty (number)
6985 minflt -- number of minor page faults (number)
6986 majflt -- number of major page faults (number)
6987 cminflt -- cumulative number of minor page faults (number)
6988 cmajflt -- cumulative number of major page faults (number)
6989 utime -- user time used by the process, in (current-time) format,
6990 which is a list of integers (HIGH LOW USEC PSEC)
6991 stime -- system time used by the process (current-time)
6992 time -- sum of utime and stime (current-time)
6993 cutime -- user time used by the process and its children (current-time)
6994 cstime -- system time used by the process and its children (current-time)
6995 ctime -- sum of cutime and cstime (current-time)
6996 pri -- priority of the process (number)
6997 nice -- nice value of the process (number)
6998 thcount -- process thread count (number)
6999 start -- time the process started (current-time)
7000 vsize -- virtual memory size of the process in KB's (number)
7001 rss -- resident set size of the process in KB's (number)
7002 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7003 pcpu -- percents of CPU time used by the process (floating-point number)
7004 pmem -- percents of total physical memory used by process's resident set
7005 (floating-point number)
7006 args -- command line which invoked the process (string). */)
7009 return system_process_attributes (pid
);
7012 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7013 Invoke this after init_process_emacs, and after glib and/or GNUstep
7014 futz with the SIGCHLD handler, but before Emacs forks any children.
7015 This function's caller should block SIGCHLD. */
7017 #ifndef NS_IMPL_GNUSTEP
7021 catch_child_signal (void)
7023 struct sigaction action
, old_action
;
7024 emacs_sigaction_init (&action
, deliver_child_signal
);
7025 block_child_signal ();
7026 sigaction (SIGCHLD
, &action
, &old_action
);
7027 eassert (! (old_action
.sa_flags
& SA_SIGINFO
));
7029 if (old_action
.sa_handler
!= deliver_child_signal
)
7031 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7033 : old_action
.sa_handler
);
7034 unblock_child_signal ();
7038 /* This is not called "init_process" because that is the name of a
7039 Mach system call, so it would cause problems on Darwin systems. */
7041 init_process_emacs (void)
7046 inhibit_sentinels
= 0;
7049 if (! noninteractive
|| initialized
)
7052 #if defined HAVE_GLIB && !defined WINDOWSNT
7053 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7054 this should always fail, but is enough to initialize glib's
7055 private SIGCHLD handler, allowing catch_child_signal to copy
7056 it into lib_child_handler. */
7057 g_source_unref (g_child_watch_source_new (getpid ()));
7059 catch_child_signal ();
7062 FD_ZERO (&input_wait_mask
);
7063 FD_ZERO (&non_keyboard_wait_mask
);
7064 FD_ZERO (&non_process_wait_mask
);
7065 FD_ZERO (&write_mask
);
7066 max_process_desc
= max_input_desc
= -1;
7067 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7069 #ifdef NON_BLOCKING_CONNECT
7070 FD_ZERO (&connect_wait_mask
);
7071 num_pending_connects
= 0;
7074 #ifdef ADAPTIVE_READ_BUFFERING
7075 process_output_delay_count
= 0;
7076 process_output_skip
= 0;
7079 /* Don't do this, it caused infinite select loops. The display
7080 method should call add_keyboard_wait_descriptor on stdin if it
7083 FD_SET (0, &input_wait_mask
);
7086 Vprocess_alist
= Qnil
;
7087 deleted_pid_list
= Qnil
;
7088 for (i
= 0; i
< MAXDESC
; i
++)
7090 chan_process
[i
] = Qnil
;
7091 proc_buffered_char
[i
] = -1;
7093 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7094 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7095 #ifdef DATAGRAM_SOCKETS
7096 memset (datagram_address
, 0, sizeof datagram_address
);
7100 Lisp_Object subfeatures
= Qnil
;
7101 const struct socket_options
*sopt
;
7103 #define ADD_SUBFEATURE(key, val) \
7104 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7106 #ifdef NON_BLOCKING_CONNECT
7107 ADD_SUBFEATURE (QCnowait
, Qt
);
7109 #ifdef DATAGRAM_SOCKETS
7110 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7112 #ifdef HAVE_SEQPACKET
7113 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7115 #ifdef HAVE_LOCAL_SOCKETS
7116 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7118 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7120 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7122 #ifdef HAVE_GETSOCKNAME
7123 ADD_SUBFEATURE (QCservice
, Qt
);
7125 ADD_SUBFEATURE (QCserver
, Qt
);
7127 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7128 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7130 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7133 #if defined (DARWIN_OS)
7134 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7135 processes. As such, we only change the default value. */
7138 char const *release
= (STRINGP (Voperating_system_release
)
7139 ? SSDATA (Voperating_system_release
)
7141 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7142 Vprocess_connection_type
= Qnil
;
7146 #endif /* subprocesses */
7151 syms_of_process (void)
7155 DEFSYM (Qprocessp
, "processp");
7156 DEFSYM (Qrun
, "run");
7157 DEFSYM (Qstop
, "stop");
7158 DEFSYM (Qsignal
, "signal");
7160 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7163 Qexit = intern_c_string ("exit");
7164 staticpro (&Qexit); */
7166 DEFSYM (Qopen
, "open");
7167 DEFSYM (Qclosed
, "closed");
7168 DEFSYM (Qconnect
, "connect");
7169 DEFSYM (Qfailed
, "failed");
7170 DEFSYM (Qlisten
, "listen");
7171 DEFSYM (Qlocal
, "local");
7172 DEFSYM (Qipv4
, "ipv4");
7174 DEFSYM (Qipv6
, "ipv6");
7176 DEFSYM (Qdatagram
, "datagram");
7177 DEFSYM (Qseqpacket
, "seqpacket");
7179 DEFSYM (QCport
, ":port");
7180 DEFSYM (QCspeed
, ":speed");
7181 DEFSYM (QCprocess
, ":process");
7183 DEFSYM (QCbytesize
, ":bytesize");
7184 DEFSYM (QCstopbits
, ":stopbits");
7185 DEFSYM (QCparity
, ":parity");
7186 DEFSYM (Qodd
, "odd");
7187 DEFSYM (Qeven
, "even");
7188 DEFSYM (QCflowcontrol
, ":flowcontrol");
7191 DEFSYM (QCsummary
, ":summary");
7193 DEFSYM (Qreal
, "real");
7194 DEFSYM (Qnetwork
, "network");
7195 DEFSYM (Qserial
, "serial");
7196 DEFSYM (QCbuffer
, ":buffer");
7197 DEFSYM (QChost
, ":host");
7198 DEFSYM (QCservice
, ":service");
7199 DEFSYM (QClocal
, ":local");
7200 DEFSYM (QCremote
, ":remote");
7201 DEFSYM (QCcoding
, ":coding");
7202 DEFSYM (QCserver
, ":server");
7203 DEFSYM (QCnowait
, ":nowait");
7204 DEFSYM (QCsentinel
, ":sentinel");
7205 DEFSYM (QClog
, ":log");
7206 DEFSYM (QCnoquery
, ":noquery");
7207 DEFSYM (QCstop
, ":stop");
7208 DEFSYM (QCoptions
, ":options");
7209 DEFSYM (QCplist
, ":plist");
7211 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7213 staticpro (&Vprocess_alist
);
7214 staticpro (&deleted_pid_list
);
7216 #endif /* subprocesses */
7218 DEFSYM (QCname
, ":name");
7219 DEFSYM (QCtype
, ":type");
7221 DEFSYM (Qeuid
, "euid");
7222 DEFSYM (Qegid
, "egid");
7223 DEFSYM (Quser
, "user");
7224 DEFSYM (Qgroup
, "group");
7225 DEFSYM (Qcomm
, "comm");
7226 DEFSYM (Qstate
, "state");
7227 DEFSYM (Qppid
, "ppid");
7228 DEFSYM (Qpgrp
, "pgrp");
7229 DEFSYM (Qsess
, "sess");
7230 DEFSYM (Qttname
, "ttname");
7231 DEFSYM (Qtpgid
, "tpgid");
7232 DEFSYM (Qminflt
, "minflt");
7233 DEFSYM (Qmajflt
, "majflt");
7234 DEFSYM (Qcminflt
, "cminflt");
7235 DEFSYM (Qcmajflt
, "cmajflt");
7236 DEFSYM (Qutime
, "utime");
7237 DEFSYM (Qstime
, "stime");
7238 DEFSYM (Qtime
, "time");
7239 DEFSYM (Qcutime
, "cutime");
7240 DEFSYM (Qcstime
, "cstime");
7241 DEFSYM (Qctime
, "ctime");
7242 DEFSYM (Qinternal_default_process_sentinel
,
7243 "internal-default-process-sentinel");
7244 DEFSYM (Qinternal_default_process_filter
,
7245 "internal-default-process-filter");
7246 DEFSYM (Qpri
, "pri");
7247 DEFSYM (Qnice
, "nice");
7248 DEFSYM (Qthcount
, "thcount");
7249 DEFSYM (Qstart
, "start");
7250 DEFSYM (Qvsize
, "vsize");
7251 DEFSYM (Qrss
, "rss");
7252 DEFSYM (Qetime
, "etime");
7253 DEFSYM (Qpcpu
, "pcpu");
7254 DEFSYM (Qpmem
, "pmem");
7255 DEFSYM (Qargs
, "args");
7257 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7258 doc
: /* Non-nil means delete processes immediately when they exit.
7259 A value of nil means don't delete them until `list-processes' is run. */);
7261 delete_exited_processes
= 1;
7264 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7265 doc
: /* Control type of device used to communicate with subprocesses.
7266 Values are nil to use a pipe, or t or `pty' to use a pty.
7267 The value has no effect if the system has no ptys or if all ptys are busy:
7268 then a pipe is used in any case.
7269 The value takes effect when `start-process' is called. */);
7270 Vprocess_connection_type
= Qt
;
7272 #ifdef ADAPTIVE_READ_BUFFERING
7273 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7274 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7275 On some systems, when Emacs reads the output from a subprocess, the output data
7276 is read in very small blocks, potentially resulting in very poor performance.
7277 This behavior can be remedied to some extent by setting this variable to a
7278 non-nil value, as it will automatically delay reading from such processes, to
7279 allow them to produce more output before Emacs tries to read it.
7280 If the value is t, the delay is reset after each write to the process; any other
7281 non-nil value means that the delay is not reset on write.
7282 The variable takes effect when `start-process' is called. */);
7283 Vprocess_adaptive_read_buffering
= Qt
;
7286 defsubr (&Sprocessp
);
7287 defsubr (&Sget_process
);
7288 defsubr (&Sdelete_process
);
7289 defsubr (&Sprocess_status
);
7290 defsubr (&Sprocess_exit_status
);
7291 defsubr (&Sprocess_id
);
7292 defsubr (&Sprocess_name
);
7293 defsubr (&Sprocess_tty_name
);
7294 defsubr (&Sprocess_command
);
7295 defsubr (&Sset_process_buffer
);
7296 defsubr (&Sprocess_buffer
);
7297 defsubr (&Sprocess_mark
);
7298 defsubr (&Sset_process_filter
);
7299 defsubr (&Sprocess_filter
);
7300 defsubr (&Sset_process_sentinel
);
7301 defsubr (&Sprocess_sentinel
);
7302 defsubr (&Sset_process_window_size
);
7303 defsubr (&Sset_process_inherit_coding_system_flag
);
7304 defsubr (&Sset_process_query_on_exit_flag
);
7305 defsubr (&Sprocess_query_on_exit_flag
);
7306 defsubr (&Sprocess_contact
);
7307 defsubr (&Sprocess_plist
);
7308 defsubr (&Sset_process_plist
);
7309 defsubr (&Sprocess_list
);
7310 defsubr (&Sstart_process
);
7311 defsubr (&Sserial_process_configure
);
7312 defsubr (&Smake_serial_process
);
7313 defsubr (&Sset_network_process_option
);
7314 defsubr (&Smake_network_process
);
7315 defsubr (&Sformat_network_address
);
7316 #if defined (HAVE_NET_IF_H)
7318 defsubr (&Snetwork_interface_list
);
7320 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
7321 defsubr (&Snetwork_interface_info
);
7323 #endif /* defined (HAVE_NET_IF_H) */
7324 #ifdef DATAGRAM_SOCKETS
7325 defsubr (&Sprocess_datagram_address
);
7326 defsubr (&Sset_process_datagram_address
);
7328 defsubr (&Saccept_process_output
);
7329 defsubr (&Sprocess_send_region
);
7330 defsubr (&Sprocess_send_string
);
7331 defsubr (&Sinterrupt_process
);
7332 defsubr (&Skill_process
);
7333 defsubr (&Squit_process
);
7334 defsubr (&Sstop_process
);
7335 defsubr (&Scontinue_process
);
7336 defsubr (&Sprocess_running_child_p
);
7337 defsubr (&Sprocess_send_eof
);
7338 defsubr (&Ssignal_process
);
7339 defsubr (&Swaiting_for_user_input_p
);
7340 defsubr (&Sprocess_type
);
7341 defsubr (&Sinternal_default_process_sentinel
);
7342 defsubr (&Sinternal_default_process_filter
);
7343 defsubr (&Sset_process_coding_system
);
7344 defsubr (&Sprocess_coding_system
);
7345 defsubr (&Sset_process_filter_multibyte
);
7346 defsubr (&Sprocess_filter_multibyte_p
);
7348 #endif /* subprocesses */
7350 defsubr (&Sget_buffer_process
);
7351 defsubr (&Sprocess_inherit_coding_system_flag
);
7352 defsubr (&Slist_system_processes
);
7353 defsubr (&Sprocess_attributes
);