1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2014
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
34 /* Only MS-DOS does not define `subprocesses'. */
37 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
42 /* Are local (unix) sockets supported? */
43 #if defined (HAVE_SYS_UN_H)
44 #if !defined (AF_LOCAL) && defined (AF_UNIX)
45 #define AF_LOCAL AF_UNIX
48 #define HAVE_LOCAL_SOCKETS
53 #include <sys/ioctl.h>
54 #if defined (HAVE_NET_IF_H)
56 #endif /* HAVE_NET_IF_H */
58 #if defined (HAVE_IFADDRS_H)
59 /* Must be after net/if.h */
62 /* We only use structs from this header when we use getifaddrs. */
63 #if defined (HAVE_NET_IF_DL_H)
64 #include <net/if_dl.h>
74 # include <sys/stream.h>
75 # include <sys/stropts.h>
79 #include <arpa/nameser.h>
95 #endif /* subprocesses */
101 #include "character.h"
106 #include "termhooks.h"
107 #include "termopts.h"
108 #include "commands.h"
109 #include "keyboard.h"
110 #include "blockinput.h"
111 #include "dispextern.h"
112 #include "composite.h"
114 #include "sysselect.h"
115 #include "syssignal.h"
121 #ifdef HAVE_WINDOW_SYSTEM
123 #endif /* HAVE_WINDOW_SYSTEM */
126 #include "xgselect.h"
133 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
134 struct timespec
*, void *);
137 /* Work around GCC 4.7.0 bug with strict overflow checking; see
138 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
139 These lines can be removed once the GCC bug is fixed. */
140 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
141 # pragma GCC diagnostic ignored "-Wstrict-overflow"
144 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
145 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
146 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
147 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
148 Lisp_Object QCname
, QCtype
;
150 /* True if keyboard input is on hold, zero otherwise. */
152 static bool kbd_is_on_hold
;
154 /* Nonzero means don't run process sentinels. This is used
156 bool inhibit_sentinels
;
161 # define SOCK_CLOEXEC 0
166 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
169 close_on_exec (int fd
)
172 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
177 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
179 return close_on_exec (accept (sockfd
, addr
, addrlen
));
183 process_socket (int domain
, int type
, int protocol
)
185 return close_on_exec (socket (domain
, type
, protocol
));
188 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
191 Lisp_Object Qprocessp
;
192 static Lisp_Object Qrun
, Qstop
, Qsignal
;
193 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
195 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
196 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
198 static Lisp_Object Qipv6
;
200 static Lisp_Object QCport
, QCprocess
;
202 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
203 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
204 static Lisp_Object QCbuffer
, QChost
, QCservice
;
205 static Lisp_Object QClocal
, QCremote
, QCcoding
;
206 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
207 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
208 static Lisp_Object Qlast_nonmenu_event
;
209 static Lisp_Object Qinternal_default_process_sentinel
;
210 static Lisp_Object Qinternal_default_process_filter
;
212 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
213 #define NETCONN1_P(p) (EQ (p->type, Qnetwork))
214 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
215 #define SERIALCONN1_P(p) (EQ (p->type, Qserial))
217 /* Number of events of change of status of a process. */
218 static EMACS_INT process_tick
;
219 /* Number of events for which the user or sentinel has been notified. */
220 static EMACS_INT update_tick
;
222 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
224 /* Only W32 has this, it really means that select can't take write mask. */
225 #ifdef BROKEN_NON_BLOCKING_CONNECT
226 #undef NON_BLOCKING_CONNECT
227 enum { SELECT_CAN_DO_WRITE_MASK
= false };
229 enum { SELECT_CAN_DO_WRITE_MASK
= true };
230 #ifndef NON_BLOCKING_CONNECT
232 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
233 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
234 #define NON_BLOCKING_CONNECT
235 #endif /* EWOULDBLOCK || EINPROGRESS */
236 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
237 #endif /* HAVE_SELECT */
238 #endif /* NON_BLOCKING_CONNECT */
239 #endif /* BROKEN_NON_BLOCKING_CONNECT */
241 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
242 this system. We need to read full packets, so we need a
243 "non-destructive" select. So we require either native select,
244 or emulation of select using FIONREAD. */
246 #ifndef BROKEN_DATAGRAM_SOCKETS
247 # if defined HAVE_SELECT || defined USABLE_FIONREAD
248 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
249 # define DATAGRAM_SOCKETS
254 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
255 # define HAVE_SEQPACKET
258 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
259 #define ADAPTIVE_READ_BUFFERING
262 #ifdef ADAPTIVE_READ_BUFFERING
263 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
264 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
265 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
267 /* Number of processes which have a non-zero read_output_delay,
268 and therefore might be delayed for adaptive read buffering. */
270 static int process_output_delay_count
;
272 /* True if any process has non-nil read_output_skip. */
274 static bool process_output_skip
;
277 #define process_output_delay_count 0
280 static void create_process (Lisp_Object
, char **, Lisp_Object
);
282 static bool keyboard_bit_set (fd_set
*);
284 static void deactivate_process (Lisp_Object
);
285 static int status_notify (struct Lisp_Process
*, struct Lisp_Process
*);
286 static int read_process_output (Lisp_Object
, int);
287 static void handle_child_signal (int);
288 static void create_pty (Lisp_Object
);
290 static Lisp_Object
get_process (register Lisp_Object name
);
291 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
293 /* Mask of bits indicating the descriptors that we wait for input on. */
295 static fd_set input_wait_mask
;
297 /* Mask that excludes keyboard input descriptor(s). */
299 static fd_set non_keyboard_wait_mask
;
301 /* Mask that excludes process input descriptor(s). */
303 static fd_set non_process_wait_mask
;
305 /* Mask for selecting for write. */
307 static fd_set write_mask
;
309 #ifdef NON_BLOCKING_CONNECT
310 /* Mask of bits indicating the descriptors that we wait for connect to
311 complete on. Once they complete, they are removed from this mask
312 and added to the input_wait_mask and non_keyboard_wait_mask. */
314 static fd_set connect_wait_mask
;
316 /* Number of bits set in connect_wait_mask. */
317 static int num_pending_connects
;
318 #endif /* NON_BLOCKING_CONNECT */
320 /* The largest descriptor currently in use for a process object; -1 if none. */
321 static int max_process_desc
;
323 /* The largest descriptor currently in use for input; -1 if none. */
324 static int max_input_desc
;
326 /* Indexed by descriptor, gives the process (if any) for that descriptor */
327 static Lisp_Object chan_process
[FD_SETSIZE
];
329 /* Alist of elements (NAME . PROCESS) */
330 static Lisp_Object Vprocess_alist
;
332 /* Buffered-ahead input char from process, indexed by channel.
333 -1 means empty (no char is buffered).
334 Used on sys V where the only way to tell if there is any
335 output from the process is to read at least one char.
336 Always -1 on systems that support FIONREAD. */
338 static int proc_buffered_char
[FD_SETSIZE
];
340 /* Table of `struct coding-system' for each process. */
341 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
342 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
344 #ifdef DATAGRAM_SOCKETS
345 /* Table of `partner address' for datagram sockets. */
346 static struct sockaddr_and_len
{
349 } datagram_address
[FD_SETSIZE
];
350 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
351 #define DATAGRAM_CONN_P(proc) \
352 (PROCESSP (proc) && \
353 XPROCESS (proc)->infd >= 0 && \
354 datagram_address[XPROCESS (proc)->infd].sa != 0)
356 #define DATAGRAM_CHAN_P(chan) (0)
357 #define DATAGRAM_CONN_P(proc) (0)
360 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
361 a `for' loop which iterates over processes from Vprocess_alist. */
363 #define FOR_EACH_PROCESS(list_var, proc_var) \
364 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
366 /* These setters are used only in this file, so they can be private. */
368 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
373 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
378 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
380 p
->decode_coding_system
= val
;
383 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
385 p
->decoding_buf
= val
;
388 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
390 p
->encode_coding_system
= val
;
393 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
395 p
->encoding_buf
= val
;
398 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
400 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
403 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
408 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
413 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
418 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
423 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
425 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
428 pset_status (struct Lisp_Process
*p
, Lisp_Object val
)
433 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
438 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
443 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
445 p
->write_queue
= val
;
450 static struct fd_callback_data
456 int condition
; /* mask of the defines above. */
457 } fd_callback_info
[FD_SETSIZE
];
460 /* Add a file descriptor FD to be monitored for when read is possible.
461 When read is possible, call FUNC with argument DATA. */
464 add_read_fd (int fd
, fd_callback func
, void *data
)
466 add_keyboard_wait_descriptor (fd
);
468 fd_callback_info
[fd
].func
= func
;
469 fd_callback_info
[fd
].data
= data
;
470 fd_callback_info
[fd
].condition
|= FOR_READ
;
473 /* Stop monitoring file descriptor FD for when read is possible. */
476 delete_read_fd (int fd
)
478 delete_keyboard_wait_descriptor (fd
);
480 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
481 if (fd_callback_info
[fd
].condition
== 0)
483 fd_callback_info
[fd
].func
= 0;
484 fd_callback_info
[fd
].data
= 0;
488 /* Add a file descriptor FD to be monitored for when write is possible.
489 When write is possible, call FUNC with argument DATA. */
492 add_write_fd (int fd
, fd_callback func
, void *data
)
494 FD_SET (fd
, &write_mask
);
495 if (fd
> max_input_desc
)
498 fd_callback_info
[fd
].func
= func
;
499 fd_callback_info
[fd
].data
= data
;
500 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
503 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
506 delete_input_desc (int fd
)
508 if (fd
== max_input_desc
)
512 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
513 || FD_ISSET (fd
, &write_mask
)));
519 /* Stop monitoring file descriptor FD for when write is possible. */
522 delete_write_fd (int fd
)
524 FD_CLR (fd
, &write_mask
);
525 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
526 if (fd_callback_info
[fd
].condition
== 0)
528 fd_callback_info
[fd
].func
= 0;
529 fd_callback_info
[fd
].data
= 0;
530 delete_input_desc (fd
);
535 /* Compute the Lisp form of the process status, p->status, from
536 the numeric status that was returned by `wait'. */
538 static Lisp_Object
status_convert (int);
541 update_status (struct Lisp_Process
*p
)
543 eassert (p
->raw_status_new
);
544 pset_status (p
, status_convert (p
->raw_status
));
545 p
->raw_status_new
= 0;
548 /* Convert a process status word in Unix format to
549 the list that we use internally. */
552 status_convert (int w
)
555 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
556 else if (WIFEXITED (w
))
557 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
558 WCOREDUMP (w
) ? Qt
: Qnil
));
559 else if (WIFSIGNALED (w
))
560 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
561 WCOREDUMP (w
) ? Qt
: Qnil
));
566 /* Given a status-list, extract the three pieces of information
567 and store them individually through the three pointers. */
570 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
584 *code
= XFASTINT (XCAR (tem
));
586 *coredump
= !NILP (tem
);
590 /* Return a string describing a process status list. */
593 status_message (struct Lisp_Process
*p
)
595 Lisp_Object status
= p
->status
;
599 Lisp_Object string
, string2
;
601 decode_status (status
, &symbol
, &code
, &coredump
);
603 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
606 synchronize_system_messages_locale ();
607 signame
= strsignal (code
);
609 string
= build_string ("unknown");
614 string
= build_unibyte_string (signame
);
615 if (! NILP (Vlocale_coding_system
))
616 string
= (code_convert_string_norecord
617 (string
, Vlocale_coding_system
, 0));
618 c1
= STRING_CHAR (SDATA (string
));
621 Faset (string
, make_number (0), make_number (c2
));
623 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
624 return concat2 (string
, string2
);
626 else if (EQ (symbol
, Qexit
))
629 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
631 return build_string ("finished\n");
632 string
= Fnumber_to_string (make_number (code
));
633 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
634 return concat3 (build_string ("exited abnormally with code "),
637 else if (EQ (symbol
, Qfailed
))
639 string
= Fnumber_to_string (make_number (code
));
640 string2
= build_string ("\n");
641 return concat3 (build_string ("failed with code "),
645 return Fcopy_sequence (Fsymbol_name (symbol
));
648 enum { PTY_NAME_SIZE
= 24 };
650 /* Open an available pty, returning a file descriptor.
651 Store into PTY_NAME the file name of the terminal corresponding to the pty.
652 Return -1 on failure. */
655 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
664 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
665 for (i
= 0; i
< 16; i
++)
668 #ifdef PTY_NAME_SPRINTF
671 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
672 #endif /* no PTY_NAME_SPRINTF */
676 #else /* no PTY_OPEN */
677 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
678 #endif /* no PTY_OPEN */
683 /* Set FD's close-on-exec flag. This is needed even if
684 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
685 doesn't require support for that combination.
686 Multithreaded platforms where posix_openpt ignores
687 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
688 have a race condition between the PTY_OPEN and here. */
689 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
691 /* check to make certain that both sides are available
692 this avoids a nasty yet stupid bug in rlogins */
693 #ifdef PTY_TTY_NAME_SPRINTF
696 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
697 #endif /* no PTY_TTY_NAME_SPRINTF */
698 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
711 #endif /* HAVE_PTYS */
716 make_process (Lisp_Object name
)
718 register Lisp_Object val
, tem
, name1
;
719 register struct Lisp_Process
*p
;
720 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
723 p
= allocate_process ();
724 /* Initialize Lisp data. Note that allocate_process initializes all
725 Lisp data to nil, so do it only for slots which should not be nil. */
726 pset_status (p
, Qrun
);
727 pset_mark (p
, Fmake_marker ());
729 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
730 non-Lisp data, so do it only for slots which should not be zero. */
733 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
737 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
740 /* If name is already in use, modify it until it is unused. */
745 tem
= Fget_process (name1
);
746 if (NILP (tem
)) break;
747 name1
= concat2 (name
, make_formatted_string (suffix
, "<%"pMd
">", i
));
751 pset_sentinel (p
, Qinternal_default_process_sentinel
);
752 pset_filter (p
, Qinternal_default_process_filter
);
753 XSETPROCESS (val
, p
);
754 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
759 remove_process (register Lisp_Object proc
)
761 register Lisp_Object pair
;
763 pair
= Frassq (proc
, Vprocess_alist
);
764 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
766 deactivate_process (proc
);
770 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
771 doc
: /* Return t if OBJECT is a process. */)
774 return PROCESSP (object
) ? Qt
: Qnil
;
777 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
778 doc
: /* Return the process named NAME, or nil if there is none. */)
779 (register Lisp_Object name
)
784 return Fcdr (Fassoc (name
, Vprocess_alist
));
787 /* This is how commands for the user decode process arguments. It
788 accepts a process, a process name, a buffer, a buffer name, or nil.
789 Buffers denote the first process in the buffer, and nil denotes the
793 get_process (register Lisp_Object name
)
795 register Lisp_Object proc
, obj
;
798 obj
= Fget_process (name
);
800 obj
= Fget_buffer (name
);
802 error ("Process %s does not exist", SDATA (name
));
804 else if (NILP (name
))
805 obj
= Fcurrent_buffer ();
809 /* Now obj should be either a buffer object or a process object. */
812 if (NILP (BVAR (XBUFFER (obj
), name
)))
813 error ("Attempt to get process for a dead buffer");
814 proc
= Fget_buffer_process (obj
);
816 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
827 /* Fdelete_process promises to immediately forget about the process, but in
828 reality, Emacs needs to remember those processes until they have been
829 treated by the SIGCHLD handler and waitpid has been invoked on them;
830 otherwise they might fill up the kernel's process table.
832 Some processes created by call-process are also put onto this list.
834 Members of this list are (process-ID . filename) pairs. The
835 process-ID is a number; the filename, if a string, is a file that
836 needs to be removed after the process exits. */
837 static Lisp_Object deleted_pid_list
;
840 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
842 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
843 /* GC treated elements set to nil. */
844 Fdelq (Qnil
, deleted_pid_list
));
848 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
849 doc
: /* Delete PROCESS: kill it and forget about it immediately.
850 PROCESS may be a process, a buffer, the name of a process or buffer, or
851 nil, indicating the current buffer's process. */)
852 (register Lisp_Object process
)
854 register struct Lisp_Process
*p
;
856 process
= get_process (process
);
857 p
= XPROCESS (process
);
859 p
->raw_status_new
= 0;
860 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
862 pset_status (p
, list2 (Qexit
, make_number (0)));
863 p
->tick
= ++process_tick
;
864 status_notify (p
, NULL
);
865 redisplay_preserve_echo_area (13);
870 record_kill_process (p
, Qnil
);
874 /* Update P's status, since record_kill_process will make the
875 SIGCHLD handler update deleted_pid_list, not *P. */
877 if (p
->raw_status_new
)
879 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
880 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
881 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
883 p
->tick
= ++process_tick
;
884 status_notify (p
, NULL
);
885 redisplay_preserve_echo_area (13);
888 remove_process (process
);
892 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
893 doc
: /* Return the status of PROCESS.
894 The returned value is one of the following symbols:
895 run -- for a process that is running.
896 stop -- for a process stopped but continuable.
897 exit -- for a process that has exited.
898 signal -- for a process that has got a fatal signal.
899 open -- for a network stream connection that is open.
900 listen -- for a network stream server that is listening.
901 closed -- for a network stream connection that is closed.
902 connect -- when waiting for a non-blocking connection to complete.
903 failed -- when a non-blocking connection has failed.
904 nil -- if arg is a process name and no such process exists.
905 PROCESS may be a process, a buffer, the name of a process, or
906 nil, indicating the current buffer's process. */)
907 (register Lisp_Object process
)
909 register struct Lisp_Process
*p
;
910 register Lisp_Object status
;
912 if (STRINGP (process
))
913 process
= Fget_process (process
);
915 process
= get_process (process
);
920 p
= XPROCESS (process
);
921 if (p
->raw_status_new
)
925 status
= XCAR (status
);
926 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
928 if (EQ (status
, Qexit
))
930 else if (EQ (p
->command
, Qt
))
932 else if (EQ (status
, Qrun
))
938 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
940 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
941 If PROCESS has not yet exited or died, return 0. */)
942 (register Lisp_Object process
)
944 CHECK_PROCESS (process
);
945 if (XPROCESS (process
)->raw_status_new
)
946 update_status (XPROCESS (process
));
947 if (CONSP (XPROCESS (process
)->status
))
948 return XCAR (XCDR (XPROCESS (process
)->status
));
949 return make_number (0);
952 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
953 doc
: /* Return the process id of PROCESS.
954 This is the pid of the external process which PROCESS uses or talks to.
955 For a network connection, this value is nil. */)
956 (register Lisp_Object process
)
960 CHECK_PROCESS (process
);
961 pid
= XPROCESS (process
)->pid
;
962 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
965 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
966 doc
: /* Return the name of PROCESS, as a string.
967 This is the name of the program invoked in PROCESS,
968 possibly modified to make it unique among process names. */)
969 (register Lisp_Object process
)
971 CHECK_PROCESS (process
);
972 return XPROCESS (process
)->name
;
975 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
976 doc
: /* Return the command that was executed to start PROCESS.
977 This is a list of strings, the first string being the program executed
978 and the rest of the strings being the arguments given to it.
979 For a network or serial process, this is nil (process is running) or t
980 \(process is stopped). */)
981 (register Lisp_Object process
)
983 CHECK_PROCESS (process
);
984 return XPROCESS (process
)->command
;
987 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
988 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
989 This is the terminal that the process itself reads and writes on,
990 not the name of the pty that Emacs uses to talk with that terminal. */)
991 (register Lisp_Object process
)
993 CHECK_PROCESS (process
);
994 return XPROCESS (process
)->tty_name
;
997 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
999 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1001 (register Lisp_Object process
, Lisp_Object buffer
)
1003 struct Lisp_Process
*p
;
1005 CHECK_PROCESS (process
);
1007 CHECK_BUFFER (buffer
);
1008 p
= XPROCESS (process
);
1009 pset_buffer (p
, buffer
);
1010 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1011 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1012 setup_process_coding_systems (process
);
1016 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1018 doc
: /* Return the buffer PROCESS is associated with.
1019 The default process filter inserts output from PROCESS into this buffer. */)
1020 (register Lisp_Object process
)
1022 CHECK_PROCESS (process
);
1023 return XPROCESS (process
)->buffer
;
1026 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1028 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1029 (register Lisp_Object process
)
1031 CHECK_PROCESS (process
);
1032 return XPROCESS (process
)->mark
;
1035 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1037 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1038 A value of t means stop accepting output from the process.
1040 When a process has a non-default filter, its buffer is not used for output.
1041 Instead, each time it does output, the entire string of output is
1042 passed to the filter.
1044 The filter gets two arguments: the process and the string of output.
1045 The string argument is normally a multibyte string, except:
1046 - if the process's input coding system is no-conversion or raw-text,
1047 it is a unibyte string (the non-converted input), or else
1048 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1049 string (the result of converting the decoded input multibyte
1050 string to unibyte with `string-make-unibyte'). */)
1051 (register Lisp_Object process
, Lisp_Object filter
)
1053 struct Lisp_Process
*p
;
1055 CHECK_PROCESS (process
);
1056 p
= XPROCESS (process
);
1058 /* Don't signal an error if the process's input file descriptor
1059 is closed. This could make debugging Lisp more difficult,
1060 for example when doing something like
1062 (setq process (start-process ...))
1064 (set-process-filter process ...) */
1067 filter
= Qinternal_default_process_filter
;
1071 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1073 FD_CLR (p
->infd
, &input_wait_mask
);
1074 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1076 else if (EQ (p
->filter
, Qt
)
1077 /* Network or serial process not stopped: */
1078 && !EQ (p
->command
, Qt
))
1080 FD_SET (p
->infd
, &input_wait_mask
);
1081 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1085 pset_filter (p
, filter
);
1086 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1087 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1088 setup_process_coding_systems (process
);
1092 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1094 doc
: /* Return the filter function of PROCESS.
1095 See `set-process-filter' for more info on filter functions. */)
1096 (register Lisp_Object process
)
1098 CHECK_PROCESS (process
);
1099 return XPROCESS (process
)->filter
;
1102 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1104 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1105 The sentinel is called as a function when the process changes state.
1106 It gets two arguments: the process, and a string describing the change. */)
1107 (register Lisp_Object process
, Lisp_Object sentinel
)
1109 struct Lisp_Process
*p
;
1111 CHECK_PROCESS (process
);
1112 p
= XPROCESS (process
);
1114 if (NILP (sentinel
))
1115 sentinel
= Qinternal_default_process_sentinel
;
1117 pset_sentinel (p
, sentinel
);
1118 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1119 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1123 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1125 doc
: /* Return the sentinel of PROCESS.
1126 See `set-process-sentinel' for more info on sentinels. */)
1127 (register Lisp_Object process
)
1129 CHECK_PROCESS (process
);
1130 return XPROCESS (process
)->sentinel
;
1133 DEFUN ("set-process-window-size", Fset_process_window_size
,
1134 Sset_process_window_size
, 3, 3, 0,
1135 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1136 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1138 CHECK_PROCESS (process
);
1140 /* All known platforms store window sizes as 'unsigned short'. */
1141 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1142 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1144 if (XPROCESS (process
)->infd
< 0
1145 || (set_window_size (XPROCESS (process
)->infd
,
1146 XINT (height
), XINT (width
))
1153 DEFUN ("set-process-inherit-coding-system-flag",
1154 Fset_process_inherit_coding_system_flag
,
1155 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1156 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1157 If the second argument FLAG is non-nil, then the variable
1158 `buffer-file-coding-system' of the buffer associated with PROCESS
1159 will be bound to the value of the coding system used to decode
1162 This is useful when the coding system specified for the process buffer
1163 leaves either the character code conversion or the end-of-line conversion
1164 unspecified, or if the coding system used to decode the process output
1165 is more appropriate for saving the process buffer.
1167 Binding the variable `inherit-process-coding-system' to non-nil before
1168 starting the process is an alternative way of setting the inherit flag
1169 for the process which will run.
1171 This function returns FLAG. */)
1172 (register Lisp_Object process
, Lisp_Object flag
)
1174 CHECK_PROCESS (process
);
1175 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1179 DEFUN ("set-process-query-on-exit-flag",
1180 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1182 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1183 If the second argument FLAG is non-nil, Emacs will query the user before
1184 exiting or killing a buffer if PROCESS is running. This function
1186 (register Lisp_Object process
, Lisp_Object flag
)
1188 CHECK_PROCESS (process
);
1189 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1193 DEFUN ("process-query-on-exit-flag",
1194 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1196 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1197 (register Lisp_Object process
)
1199 CHECK_PROCESS (process
);
1200 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1203 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1205 doc
: /* Return the contact info of PROCESS; t for a real child.
1206 For a network or serial connection, the value depends on the optional
1207 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1208 SERVICE) for a network connection or (PORT SPEED) for a serial
1209 connection. If KEY is t, the complete contact information for the
1210 connection is returned, else the specific value for the keyword KEY is
1211 returned. See `make-network-process' or `make-serial-process' for a
1212 list of keywords. */)
1213 (register Lisp_Object process
, Lisp_Object key
)
1215 Lisp_Object contact
;
1217 CHECK_PROCESS (process
);
1218 contact
= XPROCESS (process
)->childp
;
1220 #ifdef DATAGRAM_SOCKETS
1221 if (DATAGRAM_CONN_P (process
)
1222 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1223 contact
= Fplist_put (contact
, QCremote
,
1224 Fprocess_datagram_address (process
));
1227 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1229 if (NILP (key
) && NETCONN_P (process
))
1230 return list2 (Fplist_get (contact
, QChost
),
1231 Fplist_get (contact
, QCservice
));
1232 if (NILP (key
) && SERIALCONN_P (process
))
1233 return list2 (Fplist_get (contact
, QCport
),
1234 Fplist_get (contact
, QCspeed
));
1235 return Fplist_get (contact
, key
);
1238 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1240 doc
: /* Return the plist of PROCESS. */)
1241 (register Lisp_Object process
)
1243 CHECK_PROCESS (process
);
1244 return XPROCESS (process
)->plist
;
1247 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1249 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1250 (register Lisp_Object process
, Lisp_Object plist
)
1252 CHECK_PROCESS (process
);
1255 pset_plist (XPROCESS (process
), plist
);
1259 #if 0 /* Turned off because we don't currently record this info
1260 in the process. Perhaps add it. */
1261 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1262 doc
: /* Return the connection type of PROCESS.
1263 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1264 a socket connection. */)
1265 (Lisp_Object process
)
1267 return XPROCESS (process
)->type
;
1271 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1272 doc
: /* Return the connection type of PROCESS.
1273 The value is either the symbol `real', `network', or `serial'.
1274 PROCESS may be a process, a buffer, the name of a process or buffer, or
1275 nil, indicating the current buffer's process. */)
1276 (Lisp_Object process
)
1279 proc
= get_process (process
);
1280 return XPROCESS (proc
)->type
;
1283 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1285 doc
: /* Convert network ADDRESS from internal format to a string.
1286 A 4 or 5 element vector represents an IPv4 address (with port number).
1287 An 8 or 9 element vector represents an IPv6 address (with port number).
1288 If optional second argument OMIT-PORT is non-nil, don't include a port
1289 number in the string, even when present in ADDRESS.
1290 Returns nil if format of ADDRESS is invalid. */)
1291 (Lisp_Object address
, Lisp_Object omit_port
)
1296 if (STRINGP (address
)) /* AF_LOCAL */
1299 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1301 register struct Lisp_Vector
*p
= XVECTOR (address
);
1302 ptrdiff_t size
= p
->header
.size
;
1303 Lisp_Object args
[10];
1306 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1308 args
[0] = build_string ("%d.%d.%d.%d");
1313 args
[0] = build_string ("%d.%d.%d.%d:%d");
1316 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1318 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1323 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1329 for (i
= 0; i
< nargs
; i
++)
1331 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1334 if (nargs
<= 5 /* IPv4 */
1335 && i
< 4 /* host, not port */
1336 && XINT (p
->contents
[i
]) > 255)
1339 args
[i
+1] = p
->contents
[i
];
1342 return Fformat (nargs
+1, args
);
1345 if (CONSP (address
))
1347 Lisp_Object args
[2];
1348 args
[0] = build_string ("<Family %d>");
1349 args
[1] = Fcar (address
);
1350 return Fformat (2, args
);
1356 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1357 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1360 return Fmapcar (Qcdr
, Vprocess_alist
);
1363 /* Starting asynchronous inferior processes. */
1365 static void start_process_unwind (Lisp_Object proc
);
1367 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1368 doc
: /* Start a program in a subprocess. Return the process object for it.
1369 NAME is name for process. It is modified if necessary to make it unique.
1370 BUFFER is the buffer (or buffer name) to associate with the process.
1372 Process output (both standard output and standard error streams) goes
1373 at end of BUFFER, unless you specify an output stream or filter
1374 function to handle the output. BUFFER may also be nil, meaning that
1375 this process is not associated with any buffer.
1377 PROGRAM is the program file name. It is searched for in `exec-path'
1378 (which see). If nil, just associate a pty with the buffer. Remaining
1379 arguments are strings to give program as arguments.
1381 If you want to separate standard output from standard error, invoke
1382 the command through a shell and redirect one of them using the shell
1385 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1386 (ptrdiff_t nargs
, Lisp_Object
*args
)
1388 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1389 register unsigned char **new_argv
;
1391 ptrdiff_t count
= SPECPDL_INDEX ();
1395 buffer
= Fget_buffer_create (buffer
);
1397 /* Make sure that the child will be able to chdir to the current
1398 buffer's current directory, or its unhandled equivalent. We
1399 can't just have the child check for an error when it does the
1400 chdir, since it's in a vfork.
1402 We have to GCPRO around this because Fexpand_file_name and
1403 Funhandled_file_name_directory might call a file name handling
1404 function. The argument list is protected by the caller, so all
1405 we really have to worry about is buffer. */
1407 struct gcpro gcpro1
;
1409 current_dir
= encode_current_directory ();
1414 CHECK_STRING (name
);
1418 if (!NILP (program
))
1419 CHECK_STRING (program
);
1421 proc
= make_process (name
);
1422 /* If an error occurs and we can't start the process, we want to
1423 remove it from the process list. This means that each error
1424 check in create_process doesn't need to call remove_process
1425 itself; it's all taken care of here. */
1426 record_unwind_protect (start_process_unwind
, proc
);
1428 pset_childp (XPROCESS (proc
), Qt
);
1429 pset_plist (XPROCESS (proc
), Qnil
);
1430 pset_type (XPROCESS (proc
), Qreal
);
1431 pset_buffer (XPROCESS (proc
), buffer
);
1432 pset_sentinel (XPROCESS (proc
), Qinternal_default_process_sentinel
);
1433 pset_filter (XPROCESS (proc
), Qinternal_default_process_filter
);
1434 pset_command (XPROCESS (proc
), Flist (nargs
- 2, args
+ 2));
1437 /* AKA GNUTLS_INITSTAGE(proc). */
1438 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1439 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1442 #ifdef ADAPTIVE_READ_BUFFERING
1443 XPROCESS (proc
)->adaptive_read_buffering
1444 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1445 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1448 /* Make the process marker point into the process buffer (if any). */
1449 if (BUFFERP (buffer
))
1450 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1451 BUF_ZV (XBUFFER (buffer
)),
1452 BUF_ZV_BYTE (XBUFFER (buffer
)));
1455 /* Decide coding systems for communicating with the process. Here
1456 we don't setup the structure coding_system nor pay attention to
1457 unibyte mode. They are done in create_process. */
1459 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1460 Lisp_Object coding_systems
= Qt
;
1461 Lisp_Object val
, *args2
;
1462 struct gcpro gcpro1
, gcpro2
;
1464 val
= Vcoding_system_for_read
;
1467 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1468 args2
[0] = Qstart_process
;
1469 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1470 GCPRO2 (proc
, current_dir
);
1471 if (!NILP (program
))
1472 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1474 if (CONSP (coding_systems
))
1475 val
= XCAR (coding_systems
);
1476 else if (CONSP (Vdefault_process_coding_system
))
1477 val
= XCAR (Vdefault_process_coding_system
);
1479 pset_decode_coding_system (XPROCESS (proc
), val
);
1481 val
= Vcoding_system_for_write
;
1484 if (EQ (coding_systems
, Qt
))
1486 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1487 args2
[0] = Qstart_process
;
1488 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1489 GCPRO2 (proc
, current_dir
);
1490 if (!NILP (program
))
1491 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1494 if (CONSP (coding_systems
))
1495 val
= XCDR (coding_systems
);
1496 else if (CONSP (Vdefault_process_coding_system
))
1497 val
= XCDR (Vdefault_process_coding_system
);
1499 pset_encode_coding_system (XPROCESS (proc
), val
);
1500 /* Note: At this moment, the above coding system may leave
1501 text-conversion or eol-conversion unspecified. They will be
1502 decided after we read output from the process and decode it by
1503 some coding system, or just before we actually send a text to
1508 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1509 XPROCESS (proc
)->decoding_carryover
= 0;
1510 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1512 XPROCESS (proc
)->inherit_coding_system_flag
1513 = !(NILP (buffer
) || !inherit_process_coding_system
);
1515 if (!NILP (program
))
1517 /* If program file name is not absolute, search our path for it.
1518 Put the name we will really use in TEM. */
1519 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1520 && !(SCHARS (program
) > 1
1521 && IS_DEVICE_SEP (SREF (program
, 1))))
1523 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1526 GCPRO4 (name
, program
, buffer
, current_dir
);
1527 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1528 make_number (X_OK
), false);
1531 report_file_error ("Searching for program", program
);
1532 tem
= Fexpand_file_name (tem
, Qnil
);
1536 if (!NILP (Ffile_directory_p (program
)))
1537 error ("Specified program for new process is a directory");
1541 /* If program file name starts with /: for quoting a magic name,
1543 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1544 && SREF (tem
, 1) == ':')
1545 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1548 Lisp_Object arg_encoding
= Qnil
;
1549 struct gcpro gcpro1
;
1552 /* Encode the file name and put it in NEW_ARGV.
1553 That's where the child will use it to execute the program. */
1554 tem
= list1 (ENCODE_FILE (tem
));
1556 /* Here we encode arguments by the coding system used for sending
1557 data to the process. We don't support using different coding
1558 systems for encoding arguments and for encoding data sent to the
1561 for (i
= 3; i
< nargs
; i
++)
1563 tem
= Fcons (args
[i
], tem
);
1564 CHECK_STRING (XCAR (tem
));
1565 if (STRING_MULTIBYTE (XCAR (tem
)))
1567 if (NILP (arg_encoding
))
1568 arg_encoding
= (complement_process_encoding_system
1569 (XPROCESS (proc
)->encode_coding_system
));
1571 code_convert_string_norecord
1572 (XCAR (tem
), arg_encoding
, 1));
1579 /* Now that everything is encoded we can collect the strings into
1581 new_argv
= alloca ((nargs
- 1) * sizeof *new_argv
);
1582 new_argv
[nargs
- 2] = 0;
1584 for (i
= nargs
- 2; i
-- != 0; )
1586 new_argv
[i
] = SDATA (XCAR (tem
));
1590 create_process (proc
, (char **) new_argv
, current_dir
);
1595 return unbind_to (count
, proc
);
1598 /* This function is the unwind_protect form for Fstart_process. If
1599 PROC doesn't have its pid set, then we know someone has signaled
1600 an error and the process wasn't started successfully, so we should
1601 remove it from the process list. */
1603 start_process_unwind (Lisp_Object proc
)
1605 if (!PROCESSP (proc
))
1608 /* Was PROC started successfully?
1609 -2 is used for a pty with no process, eg for gdb. */
1610 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1611 remove_process (proc
);
1614 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1617 close_process_fd (int *fd_addr
)
1627 /* Indexes of file descriptors in open_fds. */
1630 /* The pipe from Emacs to its subprocess. */
1632 WRITE_TO_SUBPROCESS
,
1634 /* The main pipe from the subprocess to Emacs. */
1635 READ_FROM_SUBPROCESS
,
1638 /* The pipe from the subprocess to Emacs that is closed when the
1639 subprocess execs. */
1640 READ_FROM_EXEC_MONITOR
,
1644 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1647 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1649 struct Lisp_Process
*p
= XPROCESS (process
);
1650 int inchannel
, outchannel
;
1653 int forkin
, forkout
;
1655 char pty_name
[PTY_NAME_SIZE
];
1656 Lisp_Object lisp_pty_name
= Qnil
;
1659 inchannel
= outchannel
= -1;
1661 if (!NILP (Vprocess_connection_type
))
1662 outchannel
= inchannel
= allocate_pty (pty_name
);
1666 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1667 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1668 /* On most USG systems it does not work to open the pty's tty here,
1669 then close it and reopen it in the child. */
1670 /* Don't let this terminal become our controlling terminal
1671 (in case we don't have one). */
1672 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1674 report_file_error ("Opening pty", Qnil
);
1675 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1677 forkin
= forkout
= -1;
1678 #endif /* not USG, or USG_SUBTTY_WORKS */
1680 lisp_pty_name
= build_string (pty_name
);
1684 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1685 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1686 report_file_error ("Creating pipe", Qnil
);
1687 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1688 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1689 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1690 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1694 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1695 report_file_error ("Creating pipe", Qnil
);
1698 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1699 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1701 /* Record this as an active process, with its channels. */
1702 chan_process
[inchannel
] = process
;
1703 p
->infd
= inchannel
;
1704 p
->outfd
= outchannel
;
1706 /* Previously we recorded the tty descriptor used in the subprocess.
1707 It was only used for getting the foreground tty process, so now
1708 we just reopen the device (see emacs_get_tty_pgrp) as this is
1709 more portable (see USG_SUBTTY_WORKS above). */
1711 p
->pty_flag
= pty_flag
;
1712 pset_status (p
, Qrun
);
1714 FD_SET (inchannel
, &input_wait_mask
);
1715 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1716 if (inchannel
> max_process_desc
)
1717 max_process_desc
= inchannel
;
1719 /* This may signal an error. */
1720 setup_process_coding_systems (process
);
1723 block_child_signal (&oldset
);
1726 /* vfork, and prevent local vars from being clobbered by the vfork. */
1728 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1729 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1730 char **volatile new_argv_volatile
= new_argv
;
1731 int volatile forkin_volatile
= forkin
;
1732 int volatile forkout_volatile
= forkout
;
1733 struct Lisp_Process
*p_volatile
= p
;
1737 current_dir
= current_dir_volatile
;
1738 lisp_pty_name
= lisp_pty_name_volatile
;
1739 new_argv
= new_argv_volatile
;
1740 forkin
= forkin_volatile
;
1741 forkout
= forkout_volatile
;
1744 pty_flag
= p
->pty_flag
;
1748 #endif /* not WINDOWSNT */
1750 int xforkin
= forkin
;
1751 int xforkout
= forkout
;
1753 /* Make the pty be the controlling terminal of the process. */
1755 /* First, disconnect its current controlling terminal. */
1756 /* We tried doing setsid only if pty_flag, but it caused
1757 process_set_signal to fail on SGI when using a pipe. */
1759 /* Make the pty's terminal the controlling terminal. */
1760 if (pty_flag
&& xforkin
>= 0)
1763 /* We ignore the return value
1764 because faith@cs.unc.edu says that is necessary on Linux. */
1765 ioctl (xforkin
, TIOCSCTTY
, 0);
1768 #if defined (LDISC1)
1769 if (pty_flag
&& xforkin
>= 0)
1772 tcgetattr (xforkin
, &t
);
1774 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1775 emacs_perror ("create_process/tcsetattr LDISC1");
1778 #if defined (NTTYDISC) && defined (TIOCSETD)
1779 if (pty_flag
&& xforkin
>= 0)
1781 /* Use new line discipline. */
1782 int ldisc
= NTTYDISC
;
1783 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1788 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1789 can do TIOCSPGRP only to the process's controlling tty. */
1792 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1793 I can't test it since I don't have 4.3. */
1794 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1797 ioctl (j
, TIOCNOTTY
, 0);
1801 #endif /* TIOCNOTTY */
1803 #if !defined (DONT_REOPEN_PTY)
1804 /*** There is a suggestion that this ought to be a
1805 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1806 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1807 that system does seem to need this code, even though
1808 both TIOCSCTTY is defined. */
1809 /* Now close the pty (if we had it open) and reopen it.
1810 This makes the pty the controlling terminal of the subprocess. */
1814 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1817 emacs_close (xforkin
);
1818 xforkout
= xforkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1822 emacs_perror (SSDATA (lisp_pty_name
));
1823 _exit (EXIT_CANCELED
);
1827 #endif /* not DONT_REOPEN_PTY */
1829 #ifdef SETUP_SLAVE_PTY
1834 #endif /* SETUP_SLAVE_PTY */
1835 #endif /* HAVE_PTYS */
1837 signal (SIGINT
, SIG_DFL
);
1838 signal (SIGQUIT
, SIG_DFL
);
1840 signal (SIGPROF
, SIG_DFL
);
1843 /* Emacs ignores SIGPIPE, but the child should not. */
1844 signal (SIGPIPE
, SIG_DFL
);
1846 /* Stop blocking SIGCHLD in the child. */
1847 unblock_child_signal (&oldset
);
1850 child_setup_tty (xforkout
);
1852 pid
= child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1853 #else /* not WINDOWSNT */
1854 child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1855 #endif /* not WINDOWSNT */
1858 /* Back in the parent process. */
1860 vfork_errno
= errno
;
1865 /* Stop blocking in the parent. */
1866 unblock_child_signal (&oldset
);
1870 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1873 /* vfork succeeded. */
1875 /* Close the pipe ends that the child uses, or the child's pty. */
1876 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1877 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1880 register_child (pid
, inchannel
);
1881 #endif /* WINDOWSNT */
1883 pset_tty_name (p
, lisp_pty_name
);
1886 /* Wait for child_setup to complete in case that vfork is
1887 actually defined as fork. The descriptor
1888 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1889 of a pipe is closed at the child side either by close-on-exec
1890 on successful execve or the _exit call in child_setup. */
1894 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
1895 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
1896 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
1903 create_pty (Lisp_Object process
)
1905 struct Lisp_Process
*p
= XPROCESS (process
);
1906 char pty_name
[PTY_NAME_SIZE
];
1907 int pty_fd
= NILP (Vprocess_connection_type
) ? -1 : allocate_pty (pty_name
);
1911 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
1912 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1913 /* On most USG systems it does not work to open the pty's tty here,
1914 then close it and reopen it in the child. */
1915 /* Don't let this terminal become our controlling terminal
1916 (in case we don't have one). */
1917 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1919 report_file_error ("Opening pty", Qnil
);
1920 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
1921 #if defined (DONT_REOPEN_PTY)
1922 /* In the case that vfork is defined as fork, the parent process
1923 (Emacs) may send some data before the child process completes
1924 tty options setup. So we setup tty before forking. */
1925 child_setup_tty (forkout
);
1926 #endif /* DONT_REOPEN_PTY */
1927 #endif /* not USG, or USG_SUBTTY_WORKS */
1929 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
1931 /* Record this as an active process, with its channels.
1932 As a result, child_setup will close Emacs's side of the pipes. */
1933 chan_process
[pty_fd
] = process
;
1937 /* Previously we recorded the tty descriptor used in the subprocess.
1938 It was only used for getting the foreground tty process, so now
1939 we just reopen the device (see emacs_get_tty_pgrp) as this is
1940 more portable (see USG_SUBTTY_WORKS above). */
1943 pset_status (p
, Qrun
);
1944 setup_process_coding_systems (process
);
1946 FD_SET (pty_fd
, &input_wait_mask
);
1947 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
1948 if (pty_fd
> max_process_desc
)
1949 max_process_desc
= pty_fd
;
1951 pset_tty_name (p
, build_string (pty_name
));
1958 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1959 The address family of sa is not included in the result. */
1962 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1964 Lisp_Object address
;
1967 register struct Lisp_Vector
*p
;
1969 /* Workaround for a bug in getsockname on BSD: Names bound to
1970 sockets in the UNIX domain are inaccessible; getsockname returns
1971 a zero length name. */
1972 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
1973 return empty_unibyte_string
;
1975 switch (sa
->sa_family
)
1979 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
1980 len
= sizeof (sin
->sin_addr
) + 1;
1981 address
= Fmake_vector (make_number (len
), Qnil
);
1982 p
= XVECTOR (address
);
1983 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
1984 cp
= (unsigned char *) &sin
->sin_addr
;
1990 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
1991 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
1992 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
1993 address
= Fmake_vector (make_number (len
), Qnil
);
1994 p
= XVECTOR (address
);
1995 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
1996 for (i
= 0; i
< len
; i
++)
1997 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2001 #ifdef HAVE_LOCAL_SOCKETS
2004 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2005 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2006 /* If the first byte is NUL, the name is a Linux abstract
2007 socket name, and the name can contain embedded NULs. If
2008 it's not, we have a NUL-terminated string. Be careful not
2009 to walk past the end of the object looking for the name
2010 terminator, however. */
2011 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2013 const char *terminator
2014 = memchr (sockun
->sun_path
, '\0', name_length
);
2017 name_length
= terminator
- (const char *) sockun
->sun_path
;
2020 return make_unibyte_string (sockun
->sun_path
, name_length
);
2024 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2025 address
= Fcons (make_number (sa
->sa_family
),
2026 Fmake_vector (make_number (len
), Qnil
));
2027 p
= XVECTOR (XCDR (address
));
2028 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2034 p
->contents
[i
++] = make_number (*cp
++);
2040 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2043 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2045 register struct Lisp_Vector
*p
;
2047 if (VECTORP (address
))
2049 p
= XVECTOR (address
);
2050 if (p
->header
.size
== 5)
2053 return sizeof (struct sockaddr_in
);
2056 else if (p
->header
.size
== 9)
2058 *familyp
= AF_INET6
;
2059 return sizeof (struct sockaddr_in6
);
2063 #ifdef HAVE_LOCAL_SOCKETS
2064 else if (STRINGP (address
))
2066 *familyp
= AF_LOCAL
;
2067 return sizeof (struct sockaddr_un
);
2070 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2071 && VECTORP (XCDR (address
)))
2073 struct sockaddr
*sa
;
2074 *familyp
= XINT (XCAR (address
));
2075 p
= XVECTOR (XCDR (address
));
2076 return p
->header
.size
+ sizeof (sa
->sa_family
);
2081 /* Convert an address object (vector or string) to an internal sockaddr.
2083 The address format has been basically validated by
2084 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2085 it could have come from user data. So if FAMILY is not valid,
2086 we return after zeroing *SA. */
2089 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2091 register struct Lisp_Vector
*p
;
2092 register unsigned char *cp
= NULL
;
2096 memset (sa
, 0, len
);
2098 if (VECTORP (address
))
2100 p
= XVECTOR (address
);
2101 if (family
== AF_INET
)
2103 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2104 len
= sizeof (sin
->sin_addr
) + 1;
2105 hostport
= XINT (p
->contents
[--len
]);
2106 sin
->sin_port
= htons (hostport
);
2107 cp
= (unsigned char *)&sin
->sin_addr
;
2108 sa
->sa_family
= family
;
2111 else if (family
== AF_INET6
)
2113 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2114 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2115 len
= sizeof (sin6
->sin6_addr
) + 1;
2116 hostport
= XINT (p
->contents
[--len
]);
2117 sin6
->sin6_port
= htons (hostport
);
2118 for (i
= 0; i
< len
; i
++)
2119 if (INTEGERP (p
->contents
[i
]))
2121 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2124 sa
->sa_family
= family
;
2131 else if (STRINGP (address
))
2133 #ifdef HAVE_LOCAL_SOCKETS
2134 if (family
== AF_LOCAL
)
2136 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2137 cp
= SDATA (address
);
2138 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2139 sockun
->sun_path
[i
] = *cp
++;
2140 sa
->sa_family
= family
;
2147 p
= XVECTOR (XCDR (address
));
2148 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2151 for (i
= 0; i
< len
; i
++)
2152 if (INTEGERP (p
->contents
[i
]))
2153 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2156 #ifdef DATAGRAM_SOCKETS
2157 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2159 doc
: /* Get the current datagram address associated with PROCESS. */)
2160 (Lisp_Object process
)
2164 CHECK_PROCESS (process
);
2166 if (!DATAGRAM_CONN_P (process
))
2169 channel
= XPROCESS (process
)->infd
;
2170 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2171 datagram_address
[channel
].len
);
2174 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2176 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2177 Returns nil upon error setting address, ADDRESS otherwise. */)
2178 (Lisp_Object process
, Lisp_Object address
)
2183 CHECK_PROCESS (process
);
2185 if (!DATAGRAM_CONN_P (process
))
2188 channel
= XPROCESS (process
)->infd
;
2190 len
= get_lisp_to_sockaddr_size (address
, &family
);
2191 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2193 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2199 static const struct socket_options
{
2200 /* The name of this option. Should be lowercase version of option
2201 name without SO_ prefix. */
2203 /* Option level SOL_... */
2205 /* Option number SO_... */
2207 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2208 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2209 } socket_options
[] =
2211 #ifdef SO_BINDTODEVICE
2212 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2215 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2218 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2221 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2224 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2227 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2230 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2233 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2235 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2238 /* Set option OPT to value VAL on socket S.
2240 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2241 Signals an error if setting a known option fails.
2245 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2248 const struct socket_options
*sopt
;
2253 name
= SSDATA (SYMBOL_NAME (opt
));
2254 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2255 if (strcmp (name
, sopt
->name
) == 0)
2258 switch (sopt
->opttype
)
2263 optval
= NILP (val
) ? 0 : 1;
2264 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2265 &optval
, sizeof (optval
));
2272 if (TYPE_RANGED_INTEGERP (int, val
))
2273 optval
= XINT (val
);
2275 error ("Bad option value for %s", name
);
2276 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2277 &optval
, sizeof (optval
));
2281 #ifdef SO_BINDTODEVICE
2284 char devname
[IFNAMSIZ
+1];
2286 /* This is broken, at least in the Linux 2.4 kernel.
2287 To unbind, the arg must be a zero integer, not the empty string.
2288 This should work on all systems. KFS. 2003-09-23. */
2289 memset (devname
, 0, sizeof devname
);
2292 char *arg
= SSDATA (val
);
2293 int len
= min (strlen (arg
), IFNAMSIZ
);
2294 memcpy (devname
, arg
, len
);
2296 else if (!NILP (val
))
2297 error ("Bad option value for %s", name
);
2298 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2307 struct linger linger
;
2310 linger
.l_linger
= 0;
2311 if (TYPE_RANGED_INTEGERP (int, val
))
2312 linger
.l_linger
= XINT (val
);
2314 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2315 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2316 &linger
, sizeof (linger
));
2327 int setsockopt_errno
= errno
;
2328 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2332 return (1 << sopt
->optbit
);
2336 DEFUN ("set-network-process-option",
2337 Fset_network_process_option
, Sset_network_process_option
,
2339 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2340 See `make-network-process' for a list of options and values.
2341 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2342 OPTION is not a supported option, return nil instead; otherwise return t. */)
2343 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2346 struct Lisp_Process
*p
;
2348 CHECK_PROCESS (process
);
2349 p
= XPROCESS (process
);
2350 if (!NETCONN1_P (p
))
2351 error ("Process is not a network process");
2355 error ("Process is not running");
2357 if (set_socket_option (s
, option
, value
))
2359 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2363 if (NILP (no_error
))
2364 error ("Unknown or unsupported option");
2370 DEFUN ("serial-process-configure",
2371 Fserial_process_configure
,
2372 Sserial_process_configure
,
2374 doc
: /* Configure speed, bytesize, etc. of a serial process.
2376 Arguments are specified as keyword/argument pairs. Attributes that
2377 are not given are re-initialized from the process's current
2378 configuration (available via the function `process-contact') or set to
2379 reasonable default values. The following arguments are defined:
2385 -- Any of these arguments can be given to identify the process that is
2386 to be configured. If none of these arguments is given, the current
2387 buffer's process is used.
2389 :speed SPEED -- SPEED is the speed of the serial port in bits per
2390 second, also called baud rate. Any value can be given for SPEED, but
2391 most serial ports work only at a few defined values between 1200 and
2392 115200, with 9600 being the most common value. If SPEED is nil, the
2393 serial port is not configured any further, i.e., all other arguments
2394 are ignored. This may be useful for special serial ports such as
2395 Bluetooth-to-serial converters which can only be configured through AT
2396 commands. A value of nil for SPEED can be used only when passed
2397 through `make-serial-process' or `serial-term'.
2399 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2400 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2402 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2403 `odd' (use odd parity), or the symbol `even' (use even parity). If
2404 PARITY is not given, no parity is used.
2406 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2407 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2408 is not given or nil, 1 stopbit is used.
2410 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2411 flowcontrol to be used, which is either nil (don't use flowcontrol),
2412 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2413 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2414 flowcontrol is used.
2416 `serial-process-configure' is called by `make-serial-process' for the
2417 initial configuration of the serial port.
2421 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2423 \(serial-process-configure
2424 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2426 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2428 usage: (serial-process-configure &rest ARGS) */)
2429 (ptrdiff_t nargs
, Lisp_Object
*args
)
2431 struct Lisp_Process
*p
;
2432 Lisp_Object contact
= Qnil
;
2433 Lisp_Object proc
= Qnil
;
2434 struct gcpro gcpro1
;
2436 contact
= Flist (nargs
, args
);
2439 proc
= Fplist_get (contact
, QCprocess
);
2441 proc
= Fplist_get (contact
, QCname
);
2443 proc
= Fplist_get (contact
, QCbuffer
);
2445 proc
= Fplist_get (contact
, QCport
);
2446 proc
= get_process (proc
);
2447 p
= XPROCESS (proc
);
2448 if (!EQ (p
->type
, Qserial
))
2449 error ("Not a serial process");
2451 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2457 serial_configure (p
, contact
);
2463 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2465 doc
: /* Create and return a serial port process.
2467 In Emacs, serial port connections are represented by process objects,
2468 so input and output work as for subprocesses, and `delete-process'
2469 closes a serial port connection. However, a serial process has no
2470 process id, it cannot be signaled, and the status codes are different
2471 from normal processes.
2473 `make-serial-process' creates a process and a buffer, on which you
2474 probably want to use `process-send-string'. Try \\[serial-term] for
2475 an interactive terminal. See below for examples.
2477 Arguments are specified as keyword/argument pairs. The following
2478 arguments are defined:
2480 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2481 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2482 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2483 the backslashes in strings).
2485 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2486 which this function calls.
2488 :name NAME -- NAME is the name of the process. If NAME is not given,
2489 the value of PORT is used.
2491 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2492 with the process. Process output goes at the end of that buffer,
2493 unless you specify an output stream or filter function to handle the
2494 output. If BUFFER is not given, the value of NAME is used.
2496 :coding CODING -- If CODING is a symbol, it specifies the coding
2497 system used for both reading and writing for this process. If CODING
2498 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2499 ENCODING is used for writing.
2501 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2502 the process is running. If BOOL is not given, query before exiting.
2504 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2505 In the stopped state, a serial process does not accept incoming data,
2506 but you can send outgoing data. The stopped state is cleared by
2507 `continue-process' and set by `stop-process'.
2509 :filter FILTER -- Install FILTER as the process filter.
2511 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2513 :plist PLIST -- Install PLIST as the initial plist of the process.
2519 -- This function calls `serial-process-configure' to handle these
2522 The original argument list, possibly modified by later configuration,
2523 is available via the function `process-contact'.
2527 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2529 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2531 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2533 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2535 usage: (make-serial-process &rest ARGS) */)
2536 (ptrdiff_t nargs
, Lisp_Object
*args
)
2539 Lisp_Object proc
, contact
, port
;
2540 struct Lisp_Process
*p
;
2541 struct gcpro gcpro1
;
2542 Lisp_Object name
, buffer
;
2543 Lisp_Object tem
, val
;
2544 ptrdiff_t specpdl_count
;
2549 contact
= Flist (nargs
, args
);
2552 port
= Fplist_get (contact
, QCport
);
2554 error ("No port specified");
2555 CHECK_STRING (port
);
2557 if (NILP (Fplist_member (contact
, QCspeed
)))
2558 error (":speed not specified");
2559 if (!NILP (Fplist_get (contact
, QCspeed
)))
2560 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2562 name
= Fplist_get (contact
, QCname
);
2565 CHECK_STRING (name
);
2566 proc
= make_process (name
);
2567 specpdl_count
= SPECPDL_INDEX ();
2568 record_unwind_protect (remove_process
, proc
);
2569 p
= XPROCESS (proc
);
2571 fd
= serial_open (port
);
2572 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2575 if (fd
> max_process_desc
)
2576 max_process_desc
= fd
;
2577 chan_process
[fd
] = proc
;
2579 buffer
= Fplist_get (contact
, QCbuffer
);
2582 buffer
= Fget_buffer_create (buffer
);
2583 pset_buffer (p
, buffer
);
2585 pset_childp (p
, contact
);
2586 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2587 pset_type (p
, Qserial
);
2588 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2589 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2591 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2592 p
->kill_without_query
= 1;
2593 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2594 pset_command (p
, Qt
);
2595 eassert (! p
->pty_flag
);
2597 if (!EQ (p
->command
, Qt
))
2599 FD_SET (fd
, &input_wait_mask
);
2600 FD_SET (fd
, &non_keyboard_wait_mask
);
2603 if (BUFFERP (buffer
))
2605 set_marker_both (p
->mark
, buffer
,
2606 BUF_ZV (XBUFFER (buffer
)),
2607 BUF_ZV_BYTE (XBUFFER (buffer
)));
2610 tem
= Fplist_member (contact
, QCcoding
);
2611 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2617 val
= XCAR (XCDR (tem
));
2621 else if (!NILP (Vcoding_system_for_read
))
2622 val
= Vcoding_system_for_read
;
2623 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2624 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2626 pset_decode_coding_system (p
, val
);
2631 val
= XCAR (XCDR (tem
));
2635 else if (!NILP (Vcoding_system_for_write
))
2636 val
= Vcoding_system_for_write
;
2637 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2638 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2640 pset_encode_coding_system (p
, val
);
2642 setup_process_coding_systems (proc
);
2643 pset_decoding_buf (p
, empty_unibyte_string
);
2644 p
->decoding_carryover
= 0;
2645 pset_encoding_buf (p
, empty_unibyte_string
);
2646 p
->inherit_coding_system_flag
2647 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2649 Fserial_process_configure (nargs
, args
);
2651 specpdl_ptr
= specpdl
+ specpdl_count
;
2657 /* Create a network stream/datagram client/server process. Treated
2658 exactly like a normal process when reading and writing. Primary
2659 differences are in status display and process deletion. A network
2660 connection has no PID; you cannot signal it. All you can do is
2661 stop/continue it and deactivate/close it via delete-process */
2663 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2665 doc
: /* Create and return a network server or client process.
2667 In Emacs, network connections are represented by process objects, so
2668 input and output work as for subprocesses and `delete-process' closes
2669 a network connection. However, a network process has no process id,
2670 it cannot be signaled, and the status codes are different from normal
2673 Arguments are specified as keyword/argument pairs. The following
2674 arguments are defined:
2676 :name NAME -- NAME is name for process. It is modified if necessary
2679 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2680 with the process. Process output goes at end of that buffer, unless
2681 you specify an output stream or filter function to handle the output.
2682 BUFFER may be also nil, meaning that this process is not associated
2685 :host HOST -- HOST is name of the host to connect to, or its IP
2686 address. The symbol `local' specifies the local host. If specified
2687 for a server process, it must be a valid name or address for the local
2688 host, and only clients connecting to that address will be accepted.
2690 :service SERVICE -- SERVICE is name of the service desired, or an
2691 integer specifying a port number to connect to. If SERVICE is t,
2692 a random port number is selected for the server. (If Emacs was
2693 compiled with getaddrinfo, a port number can also be specified as a
2694 string, e.g. "80", as well as an integer. This is not portable.)
2696 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2697 stream type connection, `datagram' creates a datagram type connection,
2698 `seqpacket' creates a reliable datagram connection.
2700 :family FAMILY -- FAMILY is the address (and protocol) family for the
2701 service specified by HOST and SERVICE. The default (nil) is to use
2702 whatever address family (IPv4 or IPv6) that is defined for the host
2703 and port number specified by HOST and SERVICE. Other address families
2705 local -- for a local (i.e. UNIX) address specified by SERVICE.
2706 ipv4 -- use IPv4 address family only.
2707 ipv6 -- use IPv6 address family only.
2709 :local ADDRESS -- ADDRESS is the local address used for the connection.
2710 This parameter is ignored when opening a client process. When specified
2711 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2713 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2714 connection. This parameter is ignored when opening a stream server
2715 process. For a datagram server process, it specifies the initial
2716 setting of the remote datagram address. When specified for a client
2717 process, the FAMILY, HOST, and SERVICE args are ignored.
2719 The format of ADDRESS depends on the address family:
2720 - An IPv4 address is represented as an vector of integers [A B C D P]
2721 corresponding to numeric IP address A.B.C.D and port number P.
2722 - A local address is represented as a string with the address in the
2723 local address space.
2724 - An "unsupported family" address is represented by a cons (F . AV)
2725 where F is the family number and AV is a vector containing the socket
2726 address data with one element per address data byte. Do not rely on
2727 this format in portable code, as it may depend on implementation
2728 defined constants, data sizes, and data structure alignment.
2730 :coding CODING -- If CODING is a symbol, it specifies the coding
2731 system used for both reading and writing for this process. If CODING
2732 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2733 ENCODING is used for writing.
2735 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2736 return without waiting for the connection to complete; instead, the
2737 sentinel function will be called with second arg matching "open" (if
2738 successful) or "failed" when the connect completes. Default is to use
2739 a blocking connect (i.e. wait) for stream type connections.
2741 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2742 running when Emacs is exited.
2744 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2745 In the stopped state, a server process does not accept new
2746 connections, and a client process does not handle incoming traffic.
2747 The stopped state is cleared by `continue-process' and set by
2750 :filter FILTER -- Install FILTER as the process filter.
2752 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2753 process filter are multibyte, otherwise they are unibyte.
2754 If this keyword is not specified, the strings are multibyte if
2755 the default value of `enable-multibyte-characters' is non-nil.
2757 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2759 :log LOG -- Install LOG as the server process log function. This
2760 function is called when the server accepts a network connection from a
2761 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2762 is the server process, CLIENT is the new process for the connection,
2763 and MESSAGE is a string.
2765 :plist PLIST -- Install PLIST as the new process's initial plist.
2767 :server QLEN -- if QLEN is non-nil, create a server process for the
2768 specified FAMILY, SERVICE, and connection type (stream or datagram).
2769 If QLEN is an integer, it is used as the max. length of the server's
2770 pending connection queue (also known as the backlog); the default
2771 queue length is 5. Default is to create a client process.
2773 The following network options can be specified for this connection:
2775 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2776 :dontroute BOOL -- Only send to directly connected hosts.
2777 :keepalive BOOL -- Send keep-alive messages on network stream.
2778 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2779 :oobinline BOOL -- Place out-of-band data in receive data stream.
2780 :priority INT -- Set protocol defined priority for sent packets.
2781 :reuseaddr BOOL -- Allow reusing a recently used local address
2782 (this is allowed by default for a server process).
2783 :bindtodevice NAME -- bind to interface NAME. Using this may require
2784 special privileges on some systems.
2786 Consult the relevant system programmer's manual pages for more
2787 information on using these options.
2790 A server process will listen for and accept connections from clients.
2791 When a client connection is accepted, a new network process is created
2792 for the connection with the following parameters:
2794 - The client's process name is constructed by concatenating the server
2795 process's NAME and a client identification string.
2796 - If the FILTER argument is non-nil, the client process will not get a
2797 separate process buffer; otherwise, the client's process buffer is a newly
2798 created buffer named after the server process's BUFFER name or process
2799 NAME concatenated with the client identification string.
2800 - The connection type and the process filter and sentinel parameters are
2801 inherited from the server process's TYPE, FILTER and SENTINEL.
2802 - The client process's contact info is set according to the client's
2803 addressing information (typically an IP address and a port number).
2804 - The client process's plist is initialized from the server's plist.
2806 Notice that the FILTER and SENTINEL args are never used directly by
2807 the server process. Also, the BUFFER argument is not used directly by
2808 the server process, but via the optional :log function, accepted (and
2809 failed) connections may be logged in the server process's buffer.
2811 The original argument list, modified with the actual connection
2812 information, is available via the `process-contact' function.
2814 usage: (make-network-process &rest ARGS) */)
2815 (ptrdiff_t nargs
, Lisp_Object
*args
)
2818 Lisp_Object contact
;
2819 struct Lisp_Process
*p
;
2820 #ifdef HAVE_GETADDRINFO
2821 struct addrinfo ai
, *res
, *lres
;
2822 struct addrinfo hints
;
2823 const char *portstring
;
2825 #else /* HAVE_GETADDRINFO */
2826 struct _emacs_addrinfo
2832 struct sockaddr
*ai_addr
;
2833 struct _emacs_addrinfo
*ai_next
;
2835 #endif /* HAVE_GETADDRINFO */
2836 struct sockaddr_in address_in
;
2837 #ifdef HAVE_LOCAL_SOCKETS
2838 struct sockaddr_un address_un
;
2843 int s
= -1, outch
, inch
;
2844 struct gcpro gcpro1
;
2845 ptrdiff_t count
= SPECPDL_INDEX ();
2847 Lisp_Object colon_address
; /* Either QClocal or QCremote. */
2849 Lisp_Object name
, buffer
, host
, service
, address
;
2850 Lisp_Object filter
, sentinel
;
2851 bool is_non_blocking_client
= 0;
2860 /* Save arguments for process-contact and clone-process. */
2861 contact
= Flist (nargs
, args
);
2865 /* Ensure socket support is loaded if available. */
2866 init_winsock (TRUE
);
2869 /* :type TYPE (nil: stream, datagram */
2870 tem
= Fplist_get (contact
, QCtype
);
2872 socktype
= SOCK_STREAM
;
2873 #ifdef DATAGRAM_SOCKETS
2874 else if (EQ (tem
, Qdatagram
))
2875 socktype
= SOCK_DGRAM
;
2877 #ifdef HAVE_SEQPACKET
2878 else if (EQ (tem
, Qseqpacket
))
2879 socktype
= SOCK_SEQPACKET
;
2882 error ("Unsupported connection type");
2885 tem
= Fplist_get (contact
, QCserver
);
2888 /* Don't support network sockets when non-blocking mode is
2889 not available, since a blocked Emacs is not useful. */
2891 if (TYPE_RANGED_INTEGERP (int, tem
))
2892 backlog
= XINT (tem
);
2895 /* Make colon_address an alias for :local (server) or :remote (client). */
2896 colon_address
= is_server
? QClocal
: QCremote
;
2899 if (!is_server
&& socktype
!= SOCK_DGRAM
2900 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2902 #ifndef NON_BLOCKING_CONNECT
2903 error ("Non-blocking connect not supported");
2905 is_non_blocking_client
= 1;
2909 name
= Fplist_get (contact
, QCname
);
2910 buffer
= Fplist_get (contact
, QCbuffer
);
2911 filter
= Fplist_get (contact
, QCfilter
);
2912 sentinel
= Fplist_get (contact
, QCsentinel
);
2914 CHECK_STRING (name
);
2916 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2917 ai
.ai_socktype
= socktype
;
2922 /* :local ADDRESS or :remote ADDRESS */
2923 address
= Fplist_get (contact
, colon_address
);
2924 if (!NILP (address
))
2926 host
= service
= Qnil
;
2928 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2929 error ("Malformed :address");
2930 ai
.ai_family
= family
;
2931 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2932 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2936 /* :family FAMILY -- nil (for Inet), local, or integer. */
2937 tem
= Fplist_get (contact
, QCfamily
);
2940 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2946 #ifdef HAVE_LOCAL_SOCKETS
2947 else if (EQ (tem
, Qlocal
))
2951 else if (EQ (tem
, Qipv6
))
2954 else if (EQ (tem
, Qipv4
))
2956 else if (TYPE_RANGED_INTEGERP (int, tem
))
2957 family
= XINT (tem
);
2959 error ("Unknown address family");
2961 ai
.ai_family
= family
;
2963 /* :service SERVICE -- string, integer (port number), or t (random port). */
2964 service
= Fplist_get (contact
, QCservice
);
2966 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2967 host
= Fplist_get (contact
, QChost
);
2970 if (EQ (host
, Qlocal
))
2971 /* Depending on setup, "localhost" may map to different IPv4 and/or
2972 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2973 host
= build_string ("127.0.0.1");
2974 CHECK_STRING (host
);
2977 #ifdef HAVE_LOCAL_SOCKETS
2978 if (family
== AF_LOCAL
)
2982 message (":family local ignores the :host \"%s\" property",
2984 contact
= Fplist_put (contact
, QChost
, Qnil
);
2987 CHECK_STRING (service
);
2988 memset (&address_un
, 0, sizeof address_un
);
2989 address_un
.sun_family
= AF_LOCAL
;
2990 if (sizeof address_un
.sun_path
<= SBYTES (service
))
2991 error ("Service name too long");
2992 strcpy (address_un
.sun_path
, SSDATA (service
));
2993 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2994 ai
.ai_addrlen
= sizeof address_un
;
2999 /* Slow down polling to every ten seconds.
3000 Some kernels have a bug which causes retrying connect to fail
3001 after a connect. Polling can interfere with gethostbyname too. */
3002 #ifdef POLL_FOR_INPUT
3003 if (socktype
!= SOCK_DGRAM
)
3005 record_unwind_protect_void (run_all_atimers
);
3006 bind_polling_period (10);
3010 #ifdef HAVE_GETADDRINFO
3011 /* If we have a host, use getaddrinfo to resolve both host and service.
3012 Otherwise, use getservbyname to lookup the service. */
3016 /* SERVICE can either be a string or int.
3017 Convert to a C string for later use by getaddrinfo. */
3018 if (EQ (service
, Qt
))
3020 else if (INTEGERP (service
))
3022 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3023 portstring
= portbuf
;
3027 CHECK_STRING (service
);
3028 portstring
= SSDATA (service
);
3033 memset (&hints
, 0, sizeof (hints
));
3035 hints
.ai_family
= family
;
3036 hints
.ai_socktype
= socktype
;
3037 hints
.ai_protocol
= 0;
3039 #ifdef HAVE_RES_INIT
3043 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3045 #ifdef HAVE_GAI_STRERROR
3046 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3048 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3054 #endif /* HAVE_GETADDRINFO */
3056 /* We end up here if getaddrinfo is not defined, or in case no hostname
3057 has been specified (e.g. for a local server process). */
3059 if (EQ (service
, Qt
))
3061 else if (INTEGERP (service
))
3062 port
= htons ((unsigned short) XINT (service
));
3065 struct servent
*svc_info
;
3066 CHECK_STRING (service
);
3067 svc_info
= getservbyname (SSDATA (service
),
3068 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3070 error ("Unknown service: %s", SDATA (service
));
3071 port
= svc_info
->s_port
;
3074 memset (&address_in
, 0, sizeof address_in
);
3075 address_in
.sin_family
= family
;
3076 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3077 address_in
.sin_port
= port
;
3079 #ifndef HAVE_GETADDRINFO
3082 struct hostent
*host_info_ptr
;
3084 /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
3085 as it may `hang' Emacs for a very long time. */
3089 #ifdef HAVE_RES_INIT
3093 host_info_ptr
= gethostbyname (SDATA (host
));
3098 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3099 host_info_ptr
->h_length
);
3100 family
= host_info_ptr
->h_addrtype
;
3101 address_in
.sin_family
= family
;
3104 /* Attempt to interpret host as numeric inet address */
3106 unsigned long numeric_addr
;
3107 numeric_addr
= inet_addr (SSDATA (host
));
3108 if (numeric_addr
== -1)
3109 error ("Unknown host \"%s\"", SDATA (host
));
3111 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3112 sizeof (address_in
.sin_addr
));
3116 #endif /* not HAVE_GETADDRINFO */
3118 ai
.ai_family
= family
;
3119 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3120 ai
.ai_addrlen
= sizeof address_in
;
3124 /* Do this in case we never enter the for-loop below. */
3125 count1
= SPECPDL_INDEX ();
3128 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3137 s
= socket (lres
->ai_family
, lres
->ai_socktype
| SOCK_CLOEXEC
,
3145 #ifdef DATAGRAM_SOCKETS
3146 if (!is_server
&& socktype
== SOCK_DGRAM
)
3148 #endif /* DATAGRAM_SOCKETS */
3150 #ifdef NON_BLOCKING_CONNECT
3151 if (is_non_blocking_client
)
3153 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3164 /* Make us close S if quit. */
3165 record_unwind_protect_int (close_file_unwind
, s
);
3167 /* Parse network options in the arg list.
3168 We simply ignore anything which isn't a known option (including other keywords).
3169 An error is signaled if setting a known option fails. */
3170 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3171 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3175 /* Configure as a server socket. */
3177 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3178 explicit :reuseaddr key to override this. */
3179 #ifdef HAVE_LOCAL_SOCKETS
3180 if (family
!= AF_LOCAL
)
3182 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3185 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3186 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3189 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3190 report_file_error ("Cannot bind server socket", Qnil
);
3192 #ifdef HAVE_GETSOCKNAME
3193 if (EQ (service
, Qt
))
3195 struct sockaddr_in sa1
;
3196 socklen_t len1
= sizeof (sa1
);
3197 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3199 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3200 service
= make_number (ntohs (sa1
.sin_port
));
3201 contact
= Fplist_put (contact
, QCservice
, service
);
3206 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3207 report_file_error ("Cannot listen on server socket", Qnil
);
3215 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3218 if (ret
== 0 || xerrno
== EISCONN
)
3220 /* The unwind-protect will be discarded afterwards.
3221 Likewise for immediate_quit. */
3225 #ifdef NON_BLOCKING_CONNECT
3227 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3231 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3238 if (xerrno
== EINTR
)
3240 /* Unlike most other syscalls connect() cannot be called
3241 again. (That would return EALREADY.) The proper way to
3242 wait for completion is pselect(). */
3250 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3256 report_file_error ("Failed select", Qnil
);
3260 len
= sizeof xerrno
;
3261 eassert (FD_ISSET (s
, &fdset
));
3262 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3263 report_file_error ("Failed getsockopt", Qnil
);
3265 report_file_errno ("Failed connect", Qnil
, xerrno
);
3268 #endif /* !WINDOWSNT */
3272 /* Discard the unwind protect closing S. */
3273 specpdl_ptr
= specpdl
+ count1
;
3278 if (xerrno
== EINTR
)
3285 #ifdef DATAGRAM_SOCKETS
3286 if (socktype
== SOCK_DGRAM
)
3288 if (datagram_address
[s
].sa
)
3290 datagram_address
[s
].sa
= xmalloc (lres
->ai_addrlen
);
3291 datagram_address
[s
].len
= lres
->ai_addrlen
;
3295 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3296 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3299 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3300 if (rlen
!= 0 && rfamily
== lres
->ai_family
3301 && rlen
== lres
->ai_addrlen
)
3302 conv_lisp_to_sockaddr (rfamily
, remote
,
3303 datagram_address
[s
].sa
, rlen
);
3307 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3310 contact
= Fplist_put (contact
, colon_address
,
3311 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3312 #ifdef HAVE_GETSOCKNAME
3315 struct sockaddr_in sa1
;
3316 socklen_t len1
= sizeof (sa1
);
3317 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3318 contact
= Fplist_put (contact
, QClocal
,
3319 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3326 #ifdef HAVE_GETADDRINFO
3337 /* If non-blocking got this far - and failed - assume non-blocking is
3338 not supported after all. This is probably a wrong assumption, but
3339 the normal blocking calls to open-network-stream handles this error
3341 if (is_non_blocking_client
)
3344 report_file_errno ((is_server
3345 ? "make server process failed"
3346 : "make client process failed"),
3354 buffer
= Fget_buffer_create (buffer
);
3355 proc
= make_process (name
);
3357 chan_process
[inch
] = proc
;
3359 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3361 p
= XPROCESS (proc
);
3363 pset_childp (p
, contact
);
3364 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3365 pset_type (p
, Qnetwork
);
3367 pset_buffer (p
, buffer
);
3368 pset_sentinel (p
, sentinel
);
3369 pset_filter (p
, filter
);
3370 pset_log (p
, Fplist_get (contact
, QClog
));
3371 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3372 p
->kill_without_query
= 1;
3373 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3374 pset_command (p
, Qt
);
3377 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3381 /* Discard the unwind protect for closing S, if any. */
3382 specpdl_ptr
= specpdl
+ count1
;
3384 /* Unwind bind_polling_period and request_sigio. */
3385 unbind_to (count
, Qnil
);
3387 if (is_server
&& socktype
!= SOCK_DGRAM
)
3388 pset_status (p
, Qlisten
);
3390 /* Make the process marker point into the process buffer (if any). */
3391 if (BUFFERP (buffer
))
3392 set_marker_both (p
->mark
, buffer
,
3393 BUF_ZV (XBUFFER (buffer
)),
3394 BUF_ZV_BYTE (XBUFFER (buffer
)));
3396 #ifdef NON_BLOCKING_CONNECT
3397 if (is_non_blocking_client
)
3399 /* We may get here if connect did succeed immediately. However,
3400 in that case, we still need to signal this like a non-blocking
3402 pset_status (p
, Qconnect
);
3403 if (!FD_ISSET (inch
, &connect_wait_mask
))
3405 FD_SET (inch
, &connect_wait_mask
);
3406 FD_SET (inch
, &write_mask
);
3407 num_pending_connects
++;
3412 /* A server may have a client filter setting of Qt, but it must
3413 still listen for incoming connects unless it is stopped. */
3414 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3415 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3417 FD_SET (inch
, &input_wait_mask
);
3418 FD_SET (inch
, &non_keyboard_wait_mask
);
3421 if (inch
> max_process_desc
)
3422 max_process_desc
= inch
;
3424 tem
= Fplist_member (contact
, QCcoding
);
3425 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3426 tem
= Qnil
; /* No error message (too late!). */
3429 /* Setup coding systems for communicating with the network stream. */
3430 struct gcpro gcpro1
;
3431 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3432 Lisp_Object coding_systems
= Qt
;
3433 Lisp_Object fargs
[5], val
;
3437 val
= XCAR (XCDR (tem
));
3441 else if (!NILP (Vcoding_system_for_read
))
3442 val
= Vcoding_system_for_read
;
3443 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3444 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3445 /* We dare not decode end-of-line format by setting VAL to
3446 Qraw_text, because the existing Emacs Lisp libraries
3447 assume that they receive bare code including a sequence of
3452 if (NILP (host
) || NILP (service
))
3453 coding_systems
= Qnil
;
3456 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3457 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3459 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3462 if (CONSP (coding_systems
))
3463 val
= XCAR (coding_systems
);
3464 else if (CONSP (Vdefault_process_coding_system
))
3465 val
= XCAR (Vdefault_process_coding_system
);
3469 pset_decode_coding_system (p
, val
);
3473 val
= XCAR (XCDR (tem
));
3477 else if (!NILP (Vcoding_system_for_write
))
3478 val
= Vcoding_system_for_write
;
3479 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3483 if (EQ (coding_systems
, Qt
))
3485 if (NILP (host
) || NILP (service
))
3486 coding_systems
= Qnil
;
3489 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3490 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3492 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3496 if (CONSP (coding_systems
))
3497 val
= XCDR (coding_systems
);
3498 else if (CONSP (Vdefault_process_coding_system
))
3499 val
= XCDR (Vdefault_process_coding_system
);
3503 pset_encode_coding_system (p
, val
);
3505 setup_process_coding_systems (proc
);
3507 pset_decoding_buf (p
, empty_unibyte_string
);
3508 p
->decoding_carryover
= 0;
3509 pset_encoding_buf (p
, empty_unibyte_string
);
3511 p
->inherit_coding_system_flag
3512 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3519 #ifdef HAVE_NET_IF_H
3523 network_interface_list (void)
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 */
3666 network_interface_info (Lisp_Object ifname
)
3669 Lisp_Object res
= Qnil
;
3674 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3675 && defined HAVE_GETIFADDRS && defined LLADDR)
3676 struct ifaddrs
*ifap
;
3679 CHECK_STRING (ifname
);
3681 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
3682 error ("interface name too long");
3683 strcpy (rq
.ifr_name
, SSDATA (ifname
));
3685 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3688 count
= SPECPDL_INDEX ();
3689 record_unwind_protect_int (close_file_unwind
, s
);
3692 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3693 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3695 int flags
= rq
.ifr_flags
;
3696 const struct ifflag_def
*fp
;
3699 /* If flags is smaller than int (i.e. short) it may have the high bit set
3700 due to IFF_MULTICAST. In that case, sign extending it into
3702 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3703 flags
= (unsigned short) rq
.ifr_flags
;
3706 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3708 if (flags
& fp
->flag_bit
)
3710 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3711 flags
-= fp
->flag_bit
;
3714 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3718 elt
= Fcons (make_number (fnum
), elt
);
3723 res
= Fcons (elt
, res
);
3726 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3727 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3729 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3730 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3734 for (n
= 0; n
< 6; n
++)
3735 p
->contents
[n
] = make_number (((unsigned char *)
3736 &rq
.ifr_hwaddr
.sa_data
[0])
3738 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3740 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3741 if (getifaddrs (&ifap
) != -1)
3743 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3744 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3747 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3749 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3750 unsigned char linkaddr
[6];
3753 if (it
->ifa_addr
->sa_family
!= AF_LINK
3754 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3755 || sdl
->sdl_alen
!= 6)
3758 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3759 for (n
= 0; n
< 6; n
++)
3760 p
->contents
[n
] = make_number (linkaddr
[n
]);
3762 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3766 #ifdef HAVE_FREEIFADDRS
3770 #endif /* HAVE_GETIFADDRS && LLADDR */
3772 res
= Fcons (elt
, res
);
3775 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3776 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3779 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3780 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3782 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3786 res
= Fcons (elt
, res
);
3789 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3790 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3793 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3796 res
= Fcons (elt
, res
);
3799 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3800 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3803 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3806 res
= Fcons (elt
, res
);
3808 return unbind_to (count
, any
? res
: Qnil
);
3810 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
3811 #endif /* defined (HAVE_NET_IF_H) */
3813 DEFUN ("network-interface-list", Fnetwork_interface_list
,
3814 Snetwork_interface_list
, 0, 0, 0,
3815 doc
: /* Return an alist of all network interfaces and their network address.
3816 Each element is a cons, the car of which is a string containing the
3817 interface name, and the cdr is the network address in internal
3818 format; see the description of ADDRESS in `make-network-process'.
3820 If the information is not available, return nil. */)
3823 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
3824 return network_interface_list ();
3830 DEFUN ("network-interface-info", Fnetwork_interface_info
,
3831 Snetwork_interface_info
, 1, 1, 0,
3832 doc
: /* Return information about network interface named IFNAME.
3833 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3834 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3835 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
3836 FLAGS is the current flags of the interface.
3838 Data that is unavailable is returned as nil. */)
3839 (Lisp_Object ifname
)
3841 #if ((defined HAVE_NET_IF_H \
3842 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
3843 || defined SIOCGIFFLAGS)) \
3844 || defined WINDOWSNT)
3845 return network_interface_info (ifname
);
3852 /* Turn off input and output for process PROC. */
3855 deactivate_process (Lisp_Object proc
)
3858 struct Lisp_Process
*p
= XPROCESS (proc
);
3862 /* Delete GnuTLS structures in PROC, if any. */
3863 emacs_gnutls_deinit (proc
);
3864 #endif /* HAVE_GNUTLS */
3866 #ifdef ADAPTIVE_READ_BUFFERING
3867 if (p
->read_output_delay
> 0)
3869 if (--process_output_delay_count
< 0)
3870 process_output_delay_count
= 0;
3871 p
->read_output_delay
= 0;
3872 p
->read_output_skip
= 0;
3876 /* Beware SIGCHLD hereabouts. */
3878 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
3879 close_process_fd (&p
->open_fd
[i
]);
3881 inchannel
= p
->infd
;
3886 #ifdef DATAGRAM_SOCKETS
3887 if (DATAGRAM_CHAN_P (inchannel
))
3889 xfree (datagram_address
[inchannel
].sa
);
3890 datagram_address
[inchannel
].sa
= 0;
3891 datagram_address
[inchannel
].len
= 0;
3894 chan_process
[inchannel
] = Qnil
;
3895 FD_CLR (inchannel
, &input_wait_mask
);
3896 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3897 #ifdef NON_BLOCKING_CONNECT
3898 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3900 FD_CLR (inchannel
, &connect_wait_mask
);
3901 FD_CLR (inchannel
, &write_mask
);
3902 if (--num_pending_connects
< 0)
3906 if (inchannel
== max_process_desc
)
3908 /* We just closed the highest-numbered process input descriptor,
3909 so recompute the highest-numbered one now. */
3913 while (0 <= i
&& NILP (chan_process
[i
]));
3915 max_process_desc
= i
;
3921 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3923 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3924 It is given to their filter functions.
3925 Optional argument PROCESS means do not return until output has been
3926 received from PROCESS.
3928 Optional second argument SECONDS and third argument MILLISEC
3929 specify a timeout; return after that much time even if there is
3930 no subprocess output. If SECONDS is a floating point number,
3931 it specifies a fractional number of seconds to wait.
3932 The MILLISEC argument is obsolete and should be avoided.
3934 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
3935 from PROCESS only, suspending reading output from other processes.
3936 If JUST-THIS-ONE is an integer, don't run any timers either.
3937 Return non-nil if we received any output from PROCESS (or, if PROCESS
3938 is nil, from any process) before the timeout expired. */)
3939 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3944 if (! NILP (process
))
3945 CHECK_PROCESS (process
);
3947 just_this_one
= Qnil
;
3949 if (!NILP (millisec
))
3950 { /* Obsolete calling convention using integers rather than floats. */
3951 CHECK_NUMBER (millisec
);
3953 seconds
= make_float (XINT (millisec
) / 1000.0);
3956 CHECK_NUMBER (seconds
);
3957 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3964 if (!NILP (seconds
))
3966 if (INTEGERP (seconds
))
3968 if (XINT (seconds
) > 0)
3970 secs
= XINT (seconds
);
3974 else if (FLOATP (seconds
))
3976 if (XFLOAT_DATA (seconds
) > 0)
3978 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
3979 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
3984 wrong_type_argument (Qnumberp
, seconds
);
3986 else if (! NILP (process
))
3990 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
3992 !NILP (process
) ? XPROCESS (process
) : NULL
,
3993 NILP (just_this_one
) ? 0 :
3994 !INTEGERP (just_this_one
) ? 1 : -1)
3999 /* Accept a connection for server process SERVER on CHANNEL. */
4001 static EMACS_INT connect_counter
= 0;
4004 server_accept_connection (Lisp_Object server
, int channel
)
4006 Lisp_Object proc
, caller
, name
, buffer
;
4007 Lisp_Object contact
, host
, service
;
4008 struct Lisp_Process
*ps
= XPROCESS (server
);
4009 struct Lisp_Process
*p
;
4013 struct sockaddr_in in
;
4015 struct sockaddr_in6 in6
;
4017 #ifdef HAVE_LOCAL_SOCKETS
4018 struct sockaddr_un un
;
4021 socklen_t len
= sizeof saddr
;
4024 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4033 if (code
== EWOULDBLOCK
)
4037 if (!NILP (ps
->log
))
4038 call3 (ps
->log
, server
, Qnil
,
4039 concat3 (build_string ("accept failed with code"),
4040 Fnumber_to_string (make_number (code
)),
4041 build_string ("\n")));
4045 count
= SPECPDL_INDEX ();
4046 record_unwind_protect_int (close_file_unwind
, s
);
4050 /* Setup a new process to handle the connection. */
4052 /* Generate a unique identification of the caller, and build contact
4053 information for this process. */
4056 switch (saddr
.sa
.sa_family
)
4060 Lisp_Object args
[5];
4061 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4062 args
[0] = build_string ("%d.%d.%d.%d");
4063 args
[1] = make_number (*ip
++);
4064 args
[2] = make_number (*ip
++);
4065 args
[3] = make_number (*ip
++);
4066 args
[4] = make_number (*ip
++);
4067 host
= Fformat (5, args
);
4068 service
= make_number (ntohs (saddr
.in
.sin_port
));
4070 args
[0] = build_string (" <%s:%d>");
4073 caller
= Fformat (3, args
);
4080 Lisp_Object args
[9];
4081 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4083 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4084 for (i
= 0; i
< 8; i
++)
4085 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4086 host
= Fformat (9, args
);
4087 service
= make_number (ntohs (saddr
.in
.sin_port
));
4089 args
[0] = build_string (" <[%s]:%d>");
4092 caller
= Fformat (3, args
);
4097 #ifdef HAVE_LOCAL_SOCKETS
4101 caller
= Fnumber_to_string (make_number (connect_counter
));
4102 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4106 /* Create a new buffer name for this process if it doesn't have a
4107 filter. The new buffer name is based on the buffer name or
4108 process name of the server process concatenated with the caller
4111 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4112 || EQ (ps
->filter
, Qt
)))
4116 buffer
= ps
->buffer
;
4118 buffer
= Fbuffer_name (buffer
);
4123 buffer
= concat2 (buffer
, caller
);
4124 buffer
= Fget_buffer_create (buffer
);
4128 /* Generate a unique name for the new server process. Combine the
4129 server process name with the caller identification. */
4131 name
= concat2 (ps
->name
, caller
);
4132 proc
= make_process (name
);
4134 chan_process
[s
] = proc
;
4136 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4138 p
= XPROCESS (proc
);
4140 /* Build new contact information for this setup. */
4141 contact
= Fcopy_sequence (ps
->childp
);
4142 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4143 contact
= Fplist_put (contact
, QChost
, host
);
4144 if (!NILP (service
))
4145 contact
= Fplist_put (contact
, QCservice
, service
);
4146 contact
= Fplist_put (contact
, QCremote
,
4147 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4148 #ifdef HAVE_GETSOCKNAME
4150 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4151 contact
= Fplist_put (contact
, QClocal
,
4152 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4155 pset_childp (p
, contact
);
4156 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4157 pset_type (p
, Qnetwork
);
4159 pset_buffer (p
, buffer
);
4160 pset_sentinel (p
, ps
->sentinel
);
4161 pset_filter (p
, ps
->filter
);
4162 pset_command (p
, Qnil
);
4165 /* Discard the unwind protect for closing S. */
4166 specpdl_ptr
= specpdl
+ count
;
4168 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4171 pset_status (p
, Qrun
);
4173 /* Client processes for accepted connections are not stopped initially. */
4174 if (!EQ (p
->filter
, Qt
))
4176 FD_SET (s
, &input_wait_mask
);
4177 FD_SET (s
, &non_keyboard_wait_mask
);
4180 if (s
> max_process_desc
)
4181 max_process_desc
= s
;
4183 /* Setup coding system for new process based on server process.
4184 This seems to be the proper thing to do, as the coding system
4185 of the new process should reflect the settings at the time the
4186 server socket was opened; not the current settings. */
4188 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4189 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4190 setup_process_coding_systems (proc
);
4192 pset_decoding_buf (p
, empty_unibyte_string
);
4193 p
->decoding_carryover
= 0;
4194 pset_encoding_buf (p
, empty_unibyte_string
);
4196 p
->inherit_coding_system_flag
4197 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4199 if (!NILP (ps
->log
))
4200 call3 (ps
->log
, server
, proc
,
4201 concat3 (build_string ("accept from "),
4202 (STRINGP (host
) ? host
: build_string ("-")),
4203 build_string ("\n")));
4205 exec_sentinel (proc
,
4206 concat3 (build_string ("open from "),
4207 (STRINGP (host
) ? host
: build_string ("-")),
4208 build_string ("\n")));
4211 /* This variable is different from waiting_for_input in keyboard.c.
4212 It is used to communicate to a lisp process-filter/sentinel (via the
4213 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4214 for user-input when that process-filter was called.
4215 waiting_for_input cannot be used as that is by definition 0 when
4216 lisp code is being evalled.
4217 This is also used in record_asynch_buffer_change.
4218 For that purpose, this must be 0
4219 when not inside wait_reading_process_output. */
4220 static int waiting_for_user_input_p
;
4223 wait_reading_process_output_unwind (int data
)
4225 waiting_for_user_input_p
= data
;
4228 /* This is here so breakpoints can be put on it. */
4230 wait_reading_process_output_1 (void)
4234 /* Read and dispose of subprocess output while waiting for timeout to
4235 elapse and/or keyboard input to be available.
4239 If negative, gobble data immediately available but don't wait for any.
4242 an additional duration to wait, measured in nanoseconds
4243 If TIME_LIMIT is zero, then:
4244 If NSECS == 0, there is no limit.
4245 If NSECS > 0, the timeout consists of NSECS only.
4246 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4249 0 to ignore keyboard input, or
4250 1 to return when input is available, or
4251 -1 meaning caller will actually read the input, so don't throw to
4252 the quit handler, or
4254 DO_DISPLAY means redisplay should be done to show subprocess
4255 output that arrives.
4257 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4258 (and gobble terminal input into the buffer if any arrives).
4260 If WAIT_PROC is specified, wait until something arrives from that
4263 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4264 (suspending output from other processes). A negative value
4265 means don't run any timers either.
4267 Return positive if we received input from WAIT_PROC (or from any
4268 process if WAIT_PROC is null), zero if we attempted to receive
4269 input but got none, and negative if we didn't even try. */
4272 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4274 Lisp_Object wait_for_cell
,
4275 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4285 struct timespec timeout
, end_time
;
4286 int got_some_input
= -1;
4287 ptrdiff_t count
= SPECPDL_INDEX ();
4289 FD_ZERO (&Available
);
4292 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4293 && !(CONSP (wait_proc
->status
)
4294 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4295 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4297 record_unwind_protect_int (wait_reading_process_output_unwind
,
4298 waiting_for_user_input_p
);
4299 waiting_for_user_input_p
= read_kbd
;
4306 else if (TYPE_MAXIMUM (time_t) < time_limit
)
4307 time_limit
= TYPE_MAXIMUM (time_t);
4309 /* Since we may need to wait several times,
4310 compute the absolute time to return at. */
4311 if (time_limit
|| nsecs
> 0)
4313 timeout
= make_timespec (time_limit
, nsecs
);
4314 end_time
= timespec_add (current_timespec (), timeout
);
4319 bool timeout_reduced_for_timers
= 0;
4321 /* If calling from keyboard input, do not quit
4322 since we want to return C-g as an input character.
4323 Otherwise, do pending quit if requested. */
4326 else if (pending_signals
)
4327 process_pending_signals ();
4329 /* Exit now if the cell we're waiting for became non-nil. */
4330 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4333 /* After reading input, vacuum up any leftovers without waiting. */
4334 if (0 <= got_some_input
)
4337 /* Compute time from now till when time limit is up. */
4338 /* Exit if already run out. */
4341 /* A negative timeout means
4342 gobble output available now
4343 but don't wait at all. */
4345 timeout
= make_timespec (0, 0);
4347 else if (time_limit
|| nsecs
> 0)
4349 struct timespec now
= current_timespec ();
4350 if (timespec_cmp (end_time
, now
) <= 0)
4352 timeout
= timespec_sub (end_time
, now
);
4356 timeout
= make_timespec (100000, 0);
4359 /* Normally we run timers here.
4360 But not if wait_for_cell; in those cases,
4361 the wait is supposed to be short,
4362 and those callers cannot handle running arbitrary Lisp code here. */
4363 if (NILP (wait_for_cell
)
4364 && just_wait_proc
>= 0)
4366 struct timespec timer_delay
;
4370 unsigned old_timers_run
= timers_run
;
4371 struct buffer
*old_buffer
= current_buffer
;
4372 Lisp_Object old_window
= selected_window
;
4374 timer_delay
= timer_check ();
4376 /* If a timer has run, this might have changed buffers
4377 an alike. Make read_key_sequence aware of that. */
4378 if (timers_run
!= old_timers_run
4379 && (old_buffer
!= current_buffer
4380 || !EQ (old_window
, selected_window
))
4381 && waiting_for_user_input_p
== -1)
4382 record_asynch_buffer_change ();
4384 if (timers_run
!= old_timers_run
&& do_display
)
4385 /* We must retry, since a timer may have requeued itself
4386 and that could alter the time_delay. */
4387 redisplay_preserve_echo_area (9);
4391 while (!detect_input_pending ());
4393 /* If there is unread keyboard input, also return. */
4395 && requeued_events_pending_p ())
4398 /* A negative timeout means do not wait at all. */
4401 if (timespec_valid_p (timer_delay
))
4403 if (timespec_cmp (timer_delay
, timeout
) < 0)
4405 timeout
= timer_delay
;
4406 timeout_reduced_for_timers
= 1;
4411 /* This is so a breakpoint can be put here. */
4412 wait_reading_process_output_1 ();
4417 /* Cause C-g and alarm signals to take immediate action,
4418 and cause input available signals to zero out timeout.
4420 It is important that we do this before checking for process
4421 activity. If we get a SIGCHLD after the explicit checks for
4422 process activity, timeout is the only way we will know. */
4424 set_waiting_for_input (&timeout
);
4426 /* If status of something has changed, and no input is
4427 available, notify the user of the change right away. After
4428 this explicit check, we'll let the SIGCHLD handler zap
4429 timeout to get our attention. */
4430 if (update_tick
!= process_tick
)
4435 if (kbd_on_hold_p ())
4438 Atemp
= input_wait_mask
;
4441 timeout
= make_timespec (0, 0);
4442 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4444 #ifdef NON_BLOCKING_CONNECT
4445 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4449 NULL
, &timeout
, NULL
)
4452 /* It's okay for us to do this and then continue with
4453 the loop, since timeout has already been zeroed out. */
4454 clear_waiting_for_input ();
4455 got_some_input
= status_notify (NULL
, wait_proc
);
4456 if (do_display
) redisplay_preserve_echo_area (13);
4460 /* Don't wait for output from a non-running process. Just
4461 read whatever data has already been received. */
4462 if (wait_proc
&& wait_proc
->raw_status_new
)
4463 update_status (wait_proc
);
4465 && ! EQ (wait_proc
->status
, Qrun
)
4466 && ! EQ (wait_proc
->status
, Qconnect
))
4468 bool read_some_bytes
= 0;
4470 clear_waiting_for_input ();
4471 XSETPROCESS (proc
, wait_proc
);
4473 /* Read data from the process, until we exhaust it. */
4474 while (wait_proc
->infd
>= 0)
4476 int nread
= read_process_output (proc
, wait_proc
->infd
);
4479 if (errno
== EIO
|| errno
== EAGAIN
)
4482 if (errno
== EWOULDBLOCK
)
4488 if (got_some_input
< nread
)
4489 got_some_input
= nread
;
4492 read_some_bytes
= true;
4495 if (read_some_bytes
&& do_display
)
4496 redisplay_preserve_echo_area (10);
4501 /* Wait till there is something to do */
4503 if (wait_proc
&& just_wait_proc
)
4505 if (wait_proc
->infd
< 0) /* Terminated */
4507 FD_SET (wait_proc
->infd
, &Available
);
4511 else if (!NILP (wait_for_cell
))
4513 Available
= non_process_wait_mask
;
4520 Available
= non_keyboard_wait_mask
;
4522 Available
= input_wait_mask
;
4523 Writeok
= write_mask
;
4524 check_delay
= wait_proc
? 0 : process_output_delay_count
;
4525 check_write
= SELECT_CAN_DO_WRITE_MASK
;
4528 /* If frame size has changed or the window is newly mapped,
4529 redisplay now, before we start to wait. There is a race
4530 condition here; if a SIGIO arrives between now and the select
4531 and indicates that a frame is trashed, the select may block
4532 displaying a trashed screen. */
4533 if (frame_garbaged
&& do_display
)
4535 clear_waiting_for_input ();
4536 redisplay_preserve_echo_area (11);
4538 set_waiting_for_input (&timeout
);
4541 /* Skip the `select' call if input is available and we're
4542 waiting for keyboard input or a cell change (which can be
4543 triggered by processing X events). In the latter case, set
4544 nfds to 1 to avoid breaking the loop. */
4546 if ((read_kbd
|| !NILP (wait_for_cell
))
4547 && detect_input_pending ())
4549 nfds
= read_kbd
? 0 : 1;
4551 FD_ZERO (&Available
);
4557 #ifdef ADAPTIVE_READ_BUFFERING
4558 /* Set the timeout for adaptive read buffering if any
4559 process has non-zero read_output_skip and non-zero
4560 read_output_delay, and we are not reading output for a
4561 specific process. It is not executed if
4562 Vprocess_adaptive_read_buffering is nil. */
4563 if (process_output_skip
&& check_delay
> 0)
4565 int nsecs
= timeout
.tv_nsec
;
4566 if (timeout
.tv_sec
> 0 || nsecs
> READ_OUTPUT_DELAY_MAX
)
4567 nsecs
= READ_OUTPUT_DELAY_MAX
;
4568 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4570 proc
= chan_process
[channel
];
4573 /* Find minimum non-zero read_output_delay among the
4574 processes with non-zero read_output_skip. */
4575 if (XPROCESS (proc
)->read_output_delay
> 0)
4578 if (!XPROCESS (proc
)->read_output_skip
)
4580 FD_CLR (channel
, &Available
);
4581 XPROCESS (proc
)->read_output_skip
= 0;
4582 if (XPROCESS (proc
)->read_output_delay
< nsecs
)
4583 nsecs
= XPROCESS (proc
)->read_output_delay
;
4586 timeout
= make_timespec (0, nsecs
);
4587 process_output_skip
= 0;
4591 #if defined (HAVE_NS)
4593 #elif defined (HAVE_GLIB)
4598 (max (max_process_desc
, max_input_desc
) + 1,
4600 (check_write
? &Writeok
: 0),
4601 NULL
, &timeout
, NULL
);
4604 /* GnuTLS buffers data internally. In lowat mode it leaves
4605 some data in the TCP buffers so that select works, but
4606 with custom pull/push functions we need to check if some
4607 data is available in the buffers manually. */
4612 /* We're not waiting on a specific process, so loop
4613 through all the channels and check for data.
4614 This is a workaround needed for some versions of
4615 the gnutls library -- 2.12.14 has been confirmed
4617 http://comments.gmane.org/gmane.emacs.devel/145074 */
4618 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
4619 if (! NILP (chan_process
[channel
]))
4621 struct Lisp_Process
*p
=
4622 XPROCESS (chan_process
[channel
]);
4623 if (p
&& p
->gnutls_p
&& p
->gnutls_state
4624 && ((emacs_gnutls_record_check_pending
4629 eassert (p
->infd
== channel
);
4630 FD_SET (p
->infd
, &Available
);
4636 /* Check this specific channel. */
4637 if (wait_proc
->gnutls_p
/* Check for valid process. */
4638 && wait_proc
->gnutls_state
4639 /* Do we have pending data? */
4640 && ((emacs_gnutls_record_check_pending
4641 (wait_proc
->gnutls_state
))
4645 /* Set to Available. */
4646 FD_SET (wait_proc
->infd
, &Available
);
4655 /* Make C-g and alarm signals set flags again */
4656 clear_waiting_for_input ();
4658 /* If we woke up due to SIGWINCH, actually change size now. */
4659 do_pending_window_change (0);
4661 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
4662 /* We waited the full specified time, so return now. */
4666 if (xerrno
== EINTR
)
4668 else if (xerrno
== EBADF
)
4671 report_file_errno ("Failed select", Qnil
, xerrno
);
4674 /* Check for keyboard input */
4675 /* If there is any, return immediately
4676 to give it higher priority than subprocesses */
4680 unsigned old_timers_run
= timers_run
;
4681 struct buffer
*old_buffer
= current_buffer
;
4682 Lisp_Object old_window
= selected_window
;
4685 if (detect_input_pending_run_timers (do_display
))
4687 swallow_events (do_display
);
4688 if (detect_input_pending_run_timers (do_display
))
4692 /* If a timer has run, this might have changed buffers
4693 an alike. Make read_key_sequence aware of that. */
4694 if (timers_run
!= old_timers_run
4695 && waiting_for_user_input_p
== -1
4696 && (old_buffer
!= current_buffer
4697 || !EQ (old_window
, selected_window
)))
4698 record_asynch_buffer_change ();
4704 /* If there is unread keyboard input, also return. */
4706 && requeued_events_pending_p ())
4709 /* If we are not checking for keyboard input now,
4710 do process events (but don't run any timers).
4711 This is so that X events will be processed.
4712 Otherwise they may have to wait until polling takes place.
4713 That would causes delays in pasting selections, for example.
4715 (We used to do this only if wait_for_cell.) */
4716 if (read_kbd
== 0 && detect_input_pending ())
4718 swallow_events (do_display
);
4719 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4720 if (detect_input_pending ())
4725 /* Exit now if the cell we're waiting for became non-nil. */
4726 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4730 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4731 go read it. This can happen with X on BSD after logging out.
4732 In that case, there really is no input and no SIGIO,
4733 but select says there is input. */
4735 if (read_kbd
&& interrupt_input
4736 && keyboard_bit_set (&Available
) && ! noninteractive
)
4737 handle_input_available_signal (SIGIO
);
4740 /* If checking input just got us a size-change event from X,
4741 obey it now if we should. */
4742 if (read_kbd
|| ! NILP (wait_for_cell
))
4743 do_pending_window_change (0);
4745 /* Check for data from a process. */
4746 if (no_avail
|| nfds
== 0)
4749 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4751 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4753 && ((d
->condition
& FOR_READ
4754 && FD_ISSET (channel
, &Available
))
4755 || (d
->condition
& FOR_WRITE
4756 && FD_ISSET (channel
, &write_mask
))))
4757 d
->func (channel
, d
->data
);
4760 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4762 if (FD_ISSET (channel
, &Available
)
4763 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4764 && !FD_ISSET (channel
, &non_process_wait_mask
))
4768 /* If waiting for this channel, arrange to return as
4769 soon as no more input to be processed. No more
4771 proc
= chan_process
[channel
];
4775 /* If this is a server stream socket, accept connection. */
4776 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4778 server_accept_connection (proc
, channel
);
4782 /* Read data from the process, starting with our
4783 buffered-ahead character if we have one. */
4785 nread
= read_process_output (proc
, channel
);
4786 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
)) && got_some_input
< nread
)
4787 got_some_input
= nread
;
4790 /* Since read_process_output can run a filter,
4791 which can call accept-process-output,
4792 don't try to read from any other processes
4793 before doing the select again. */
4794 FD_ZERO (&Available
);
4797 redisplay_preserve_echo_area (12);
4800 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4803 else if (nread
== -1 && errno
== EAGAIN
)
4806 /* FIXME: Is this special case still needed? */
4807 /* Note that we cannot distinguish between no input
4808 available now and a closed pipe.
4809 With luck, a closed pipe will be accompanied by
4810 subprocess termination and SIGCHLD. */
4811 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4815 /* On some OSs with ptys, when the process on one end of
4816 a pty exits, the other end gets an error reading with
4817 errno = EIO instead of getting an EOF (0 bytes read).
4818 Therefore, if we get an error reading and errno =
4819 EIO, just continue, because the child process has
4820 exited and should clean itself up soon (e.g. when we
4822 else if (nread
== -1 && errno
== EIO
)
4824 struct Lisp_Process
*p
= XPROCESS (proc
);
4826 /* Clear the descriptor now, so we only raise the
4828 FD_CLR (channel
, &input_wait_mask
);
4829 FD_CLR (channel
, &non_keyboard_wait_mask
);
4833 /* If the EIO occurs on a pty, the SIGCHLD handler's
4834 waitpid call will not find the process object to
4835 delete. Do it here. */
4836 p
->tick
= ++process_tick
;
4837 pset_status (p
, Qfailed
);
4840 #endif /* HAVE_PTYS */
4841 /* If we can detect process termination, don't consider the
4842 process gone just because its pipe is closed. */
4843 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4847 /* Preserve status of processes already terminated. */
4848 XPROCESS (proc
)->tick
= ++process_tick
;
4849 deactivate_process (proc
);
4850 if (XPROCESS (proc
)->raw_status_new
)
4851 update_status (XPROCESS (proc
));
4852 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4853 pset_status (XPROCESS (proc
),
4854 list2 (Qexit
, make_number (256)));
4857 #ifdef NON_BLOCKING_CONNECT
4858 if (FD_ISSET (channel
, &Writeok
)
4859 && FD_ISSET (channel
, &connect_wait_mask
))
4861 struct Lisp_Process
*p
;
4863 FD_CLR (channel
, &connect_wait_mask
);
4864 FD_CLR (channel
, &write_mask
);
4865 if (--num_pending_connects
< 0)
4868 proc
= chan_process
[channel
];
4872 p
= XPROCESS (proc
);
4875 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4876 So only use it on systems where it is known to work. */
4878 socklen_t xlen
= sizeof (xerrno
);
4879 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4884 struct sockaddr pname
;
4885 socklen_t pnamelen
= sizeof (pname
);
4887 /* If connection failed, getpeername will fail. */
4889 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4891 /* Obtain connect failure code through error slippage. */
4894 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4901 p
->tick
= ++process_tick
;
4902 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
4903 deactivate_process (proc
);
4907 pset_status (p
, Qrun
);
4908 /* Execute the sentinel here. If we had relied on
4909 status_notify to do it later, it will read input
4910 from the process before calling the sentinel. */
4911 exec_sentinel (proc
, build_string ("open\n"));
4912 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4914 FD_SET (p
->infd
, &input_wait_mask
);
4915 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4919 #endif /* NON_BLOCKING_CONNECT */
4920 } /* End for each file descriptor. */
4921 } /* End while exit conditions not met. */
4923 unbind_to (count
, Qnil
);
4925 /* If calling from keyboard input, do not quit
4926 since we want to return C-g as an input character.
4927 Otherwise, do pending quit if requested. */
4930 /* Prevent input_pending from remaining set if we quit. */
4931 clear_input_pending ();
4935 return got_some_input
;
4938 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4941 read_process_output_call (Lisp_Object fun_and_args
)
4943 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4947 read_process_output_error_handler (Lisp_Object error_val
)
4949 cmd_error_internal (error_val
, "error in process filter: ");
4951 update_echo_area ();
4952 Fsleep_for (make_number (2), Qnil
);
4957 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
4959 struct coding_system
*coding
);
4961 /* Read pending output from the process channel,
4962 starting with our buffered-ahead character if we have one.
4963 Yield number of decoded characters read.
4965 This function reads at most 4096 characters.
4966 If you want to read all available subprocess output,
4967 you must call it repeatedly until it returns zero.
4969 The characters read are decoded according to PROC's coding-system
4973 read_process_output (Lisp_Object proc
, register int channel
)
4975 register ssize_t nbytes
;
4977 register struct Lisp_Process
*p
= XPROCESS (proc
);
4978 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4979 int carryover
= p
->decoding_carryover
;
4981 ptrdiff_t count
= SPECPDL_INDEX ();
4982 Lisp_Object odeactivate
;
4984 chars
= alloca (carryover
+ readmax
);
4986 /* See the comment above. */
4987 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4989 #ifdef DATAGRAM_SOCKETS
4990 /* We have a working select, so proc_buffered_char is always -1. */
4991 if (DATAGRAM_CHAN_P (channel
))
4993 socklen_t len
= datagram_address
[channel
].len
;
4994 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4995 0, datagram_address
[channel
].sa
, &len
);
5000 bool buffered
= proc_buffered_char
[channel
] >= 0;
5003 chars
[carryover
] = proc_buffered_char
[channel
];
5004 proc_buffered_char
[channel
] = -1;
5007 if (p
->gnutls_p
&& p
->gnutls_state
)
5008 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5009 readmax
- buffered
);
5012 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5013 readmax
- buffered
);
5014 #ifdef ADAPTIVE_READ_BUFFERING
5015 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5017 int delay
= p
->read_output_delay
;
5020 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5023 process_output_delay_count
++;
5024 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5027 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5029 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5031 process_output_delay_count
--;
5033 p
->read_output_delay
= delay
;
5036 p
->read_output_skip
= 1;
5037 process_output_skip
= 1;
5042 nbytes
+= buffered
&& nbytes
<= 0;
5045 p
->decoding_carryover
= 0;
5047 /* At this point, NBYTES holds number of bytes just received
5048 (including the one in proc_buffered_char[channel]). */
5051 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5053 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5056 /* Now set NBYTES how many bytes we must decode. */
5057 nbytes
+= carryover
;
5059 odeactivate
= Vdeactivate_mark
;
5060 /* There's no good reason to let process filters change the current
5061 buffer, and many callers of accept-process-output, sit-for, and
5062 friends don't expect current-buffer to be changed from under them. */
5063 record_unwind_current_buffer ();
5065 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5067 /* Handling the process output should not deactivate the mark. */
5068 Vdeactivate_mark
= odeactivate
;
5070 unbind_to (count
, Qnil
);
5075 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5077 struct coding_system
*coding
)
5079 Lisp_Object outstream
= p
->filter
;
5081 bool outer_running_asynch_code
= running_asynch_code
;
5082 int waiting
= waiting_for_user_input_p
;
5084 /* No need to gcpro these, because all we do with them later
5085 is test them for EQness, and none of them should be a string. */
5087 Lisp_Object obuffer
, okeymap
;
5088 XSETBUFFER (obuffer
, current_buffer
);
5089 okeymap
= BVAR (current_buffer
, keymap
);
5092 /* We inhibit quit here instead of just catching it so that
5093 hitting ^G when a filter happens to be running won't screw
5095 specbind (Qinhibit_quit
, Qt
);
5096 specbind (Qlast_nonmenu_event
, Qt
);
5098 /* In case we get recursively called,
5099 and we already saved the match data nonrecursively,
5100 save the same match data in safely recursive fashion. */
5101 if (outer_running_asynch_code
)
5104 /* Don't clobber the CURRENT match data, either! */
5105 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5106 restore_search_regs ();
5107 record_unwind_save_match_data ();
5108 Fset_match_data (tem
, Qt
);
5111 /* For speed, if a search happens within this code,
5112 save the match data in a special nonrecursive fashion. */
5113 running_asynch_code
= 1;
5115 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5116 text
= coding
->dst_object
;
5117 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5118 /* A new coding system might be found. */
5119 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5121 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5123 /* Don't call setup_coding_system for
5124 proc_decode_coding_system[channel] here. It is done in
5125 detect_coding called via decode_coding above. */
5127 /* If a coding system for encoding is not yet decided, we set
5128 it as the same as coding-system for decoding.
5130 But, before doing that we must check if
5131 proc_encode_coding_system[p->outfd] surely points to a
5132 valid memory because p->outfd will be changed once EOF is
5133 sent to the process. */
5134 if (NILP (p
->encode_coding_system
)
5135 && proc_encode_coding_system
[p
->outfd
])
5137 pset_encode_coding_system
5138 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5139 setup_coding_system (p
->encode_coding_system
,
5140 proc_encode_coding_system
[p
->outfd
]);
5144 if (coding
->carryover_bytes
> 0)
5146 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5147 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5148 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5149 coding
->carryover_bytes
);
5150 p
->decoding_carryover
= coding
->carryover_bytes
;
5152 if (SBYTES (text
) > 0)
5153 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5154 sometimes it's simply wrong to wrap (e.g. when called from
5155 accept-process-output). */
5156 internal_condition_case_1 (read_process_output_call
,
5157 list3 (outstream
, make_lisp_proc (p
), text
),
5158 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5159 read_process_output_error_handler
);
5161 /* If we saved the match data nonrecursively, restore it now. */
5162 restore_search_regs ();
5163 running_asynch_code
= outer_running_asynch_code
;
5165 /* Restore waiting_for_user_input_p as it was
5166 when we were called, in case the filter clobbered it. */
5167 waiting_for_user_input_p
= waiting
;
5169 #if 0 /* Call record_asynch_buffer_change unconditionally,
5170 because we might have changed minor modes or other things
5171 that affect key bindings. */
5172 if (! EQ (Fcurrent_buffer (), obuffer
)
5173 || ! EQ (current_buffer
->keymap
, okeymap
))
5175 /* But do it only if the caller is actually going to read events.
5176 Otherwise there's no need to make him wake up, and it could
5177 cause trouble (for example it would make sit_for return). */
5178 if (waiting_for_user_input_p
== -1)
5179 record_asynch_buffer_change ();
5182 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5183 Sinternal_default_process_filter
, 2, 2, 0,
5184 doc
: /* Function used as default process filter.
5185 This inserts the process's output into its buffer, if there is one.
5186 Otherwise it discards the output. */)
5187 (Lisp_Object proc
, Lisp_Object text
)
5189 struct Lisp_Process
*p
;
5192 CHECK_PROCESS (proc
);
5193 p
= XPROCESS (proc
);
5194 CHECK_STRING (text
);
5196 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5198 Lisp_Object old_read_only
;
5199 ptrdiff_t old_begv
, old_zv
;
5200 ptrdiff_t old_begv_byte
, old_zv_byte
;
5201 ptrdiff_t before
, before_byte
;
5202 ptrdiff_t opoint_byte
;
5205 Fset_buffer (p
->buffer
);
5207 opoint_byte
= PT_BYTE
;
5208 old_read_only
= BVAR (current_buffer
, read_only
);
5211 old_begv_byte
= BEGV_BYTE
;
5212 old_zv_byte
= ZV_BYTE
;
5214 bset_read_only (current_buffer
, Qnil
);
5216 /* Insert new output into buffer at the current end-of-output
5217 marker, thus preserving logical ordering of input and output. */
5218 if (XMARKER (p
->mark
)->buffer
)
5219 set_point_from_marker (p
->mark
);
5221 SET_PT_BOTH (ZV
, ZV_BYTE
);
5223 before_byte
= PT_BYTE
;
5225 /* If the output marker is outside of the visible region, save
5226 the restriction and widen. */
5227 if (! (BEGV
<= PT
&& PT
<= ZV
))
5230 /* Adjust the multibyteness of TEXT to that of the buffer. */
5231 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5232 != ! STRING_MULTIBYTE (text
))
5233 text
= (STRING_MULTIBYTE (text
)
5234 ? Fstring_as_unibyte (text
)
5235 : Fstring_to_multibyte (text
));
5236 /* Insert before markers in case we are inserting where
5237 the buffer's mark is, and the user's next command is Meta-y. */
5238 insert_from_string_before_markers (text
, 0, 0,
5239 SCHARS (text
), SBYTES (text
), 0);
5241 /* Make sure the process marker's position is valid when the
5242 process buffer is changed in the signal_after_change above.
5243 W3 is known to do that. */
5244 if (BUFFERP (p
->buffer
)
5245 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5246 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5248 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5250 update_mode_lines
= 23;
5252 /* Make sure opoint and the old restrictions
5253 float ahead of any new text just as point would. */
5254 if (opoint
>= before
)
5256 opoint
+= PT
- before
;
5257 opoint_byte
+= PT_BYTE
- before_byte
;
5259 if (old_begv
> before
)
5261 old_begv
+= PT
- before
;
5262 old_begv_byte
+= PT_BYTE
- before_byte
;
5264 if (old_zv
>= before
)
5266 old_zv
+= PT
- before
;
5267 old_zv_byte
+= PT_BYTE
- before_byte
;
5270 /* If the restriction isn't what it should be, set it. */
5271 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5272 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5274 bset_read_only (current_buffer
, old_read_only
);
5275 SET_PT_BOTH (opoint
, opoint_byte
);
5280 /* Sending data to subprocess. */
5282 /* In send_process, when a write fails temporarily,
5283 wait_reading_process_output is called. It may execute user code,
5284 e.g. timers, that attempts to write new data to the same process.
5285 We must ensure that data is sent in the right order, and not
5286 interspersed half-completed with other writes (Bug#10815). This is
5287 handled by the write_queue element of struct process. It is a list
5288 with each entry having the form
5290 (string . (offset . length))
5292 where STRING is a lisp string, OFFSET is the offset into the
5293 string's byte sequence from which we should begin to send, and
5294 LENGTH is the number of bytes left to send. */
5296 /* Create a new entry in write_queue.
5297 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5298 BUF is a pointer to the string sequence of the input_obj or a C
5299 string in case of Qt or Qnil. */
5302 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5303 const char *buf
, ptrdiff_t len
, bool front
)
5306 Lisp_Object entry
, obj
;
5308 if (STRINGP (input_obj
))
5310 offset
= buf
- SSDATA (input_obj
);
5316 obj
= make_unibyte_string (buf
, len
);
5319 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5322 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5324 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5327 /* Remove the first element in the write_queue of process P, put its
5328 contents in OBJ, BUF and LEN, and return true. If the
5329 write_queue is empty, return false. */
5332 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5333 const char **buf
, ptrdiff_t *len
)
5335 Lisp_Object entry
, offset_length
;
5338 if (NILP (p
->write_queue
))
5341 entry
= XCAR (p
->write_queue
);
5342 pset_write_queue (p
, XCDR (p
->write_queue
));
5344 *obj
= XCAR (entry
);
5345 offset_length
= XCDR (entry
);
5347 *len
= XINT (XCDR (offset_length
));
5348 offset
= XINT (XCAR (offset_length
));
5349 *buf
= SSDATA (*obj
) + offset
;
5354 /* Send some data to process PROC.
5355 BUF is the beginning of the data; LEN is the number of characters.
5356 OBJECT is the Lisp object that the data comes from. If OBJECT is
5357 nil or t, it means that the data comes from C string.
5359 If OBJECT is not nil, the data is encoded by PROC's coding-system
5360 for encoding before it is sent.
5362 This function can evaluate Lisp code and can garbage collect. */
5365 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5368 struct Lisp_Process
*p
= XPROCESS (proc
);
5370 struct coding_system
*coding
;
5372 if (p
->raw_status_new
)
5374 if (! EQ (p
->status
, Qrun
))
5375 error ("Process %s not running", SDATA (p
->name
));
5377 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5379 coding
= proc_encode_coding_system
[p
->outfd
];
5380 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5382 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5383 || (BUFFERP (object
)
5384 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5387 pset_encode_coding_system
5388 (p
, complement_process_encoding_system (p
->encode_coding_system
));
5389 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5391 /* The coding system for encoding was changed to raw-text
5392 because we sent a unibyte text previously. Now we are
5393 sending a multibyte text, thus we must encode it by the
5394 original coding system specified for the current process.
5396 Another reason we come here is that the coding system
5397 was just complemented and a new one was returned by
5398 complement_process_encoding_system. */
5399 setup_coding_system (p
->encode_coding_system
, coding
);
5400 Vlast_coding_system_used
= p
->encode_coding_system
;
5402 coding
->src_multibyte
= 1;
5406 coding
->src_multibyte
= 0;
5407 /* For sending a unibyte text, character code conversion should
5408 not take place but EOL conversion should. So, setup raw-text
5409 or one of the subsidiary if we have not yet done it. */
5410 if (CODING_REQUIRE_ENCODING (coding
))
5412 if (CODING_REQUIRE_FLUSHING (coding
))
5414 /* But, before changing the coding, we must flush out data. */
5415 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5416 send_process (proc
, "", 0, Qt
);
5417 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5419 setup_coding_system (raw_text_coding_system
5420 (Vlast_coding_system_used
),
5422 coding
->src_multibyte
= 0;
5425 coding
->dst_multibyte
= 0;
5427 if (CODING_REQUIRE_ENCODING (coding
))
5429 coding
->dst_object
= Qt
;
5430 if (BUFFERP (object
))
5432 ptrdiff_t from_byte
, from
, to
;
5433 ptrdiff_t save_pt
, save_pt_byte
;
5434 struct buffer
*cur
= current_buffer
;
5436 set_buffer_internal (XBUFFER (object
));
5437 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5439 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5440 from
= BYTE_TO_CHAR (from_byte
);
5441 to
= BYTE_TO_CHAR (from_byte
+ len
);
5442 TEMP_SET_PT_BOTH (from
, from_byte
);
5443 encode_coding_object (coding
, object
, from
, from_byte
,
5444 to
, from_byte
+ len
, Qt
);
5445 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5446 set_buffer_internal (cur
);
5448 else if (STRINGP (object
))
5450 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5451 SBYTES (object
), Qt
);
5455 coding
->dst_object
= make_unibyte_string (buf
, len
);
5456 coding
->produced
= len
;
5459 len
= coding
->produced
;
5460 object
= coding
->dst_object
;
5461 buf
= SSDATA (object
);
5464 /* If there is already data in the write_queue, put the new data
5465 in the back of queue. Otherwise, ignore it. */
5466 if (!NILP (p
->write_queue
))
5467 write_queue_push (p
, object
, buf
, len
, 0);
5469 do /* while !NILP (p->write_queue) */
5471 ptrdiff_t cur_len
= -1;
5472 const char *cur_buf
;
5473 Lisp_Object cur_object
;
5475 /* If write_queue is empty, ignore it. */
5476 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
5480 cur_object
= object
;
5485 /* Send this batch, using one or more write calls. */
5486 ptrdiff_t written
= 0;
5487 int outfd
= p
->outfd
;
5488 #ifdef DATAGRAM_SOCKETS
5489 if (DATAGRAM_CHAN_P (outfd
))
5491 rv
= sendto (outfd
, cur_buf
, cur_len
,
5492 0, datagram_address
[outfd
].sa
,
5493 datagram_address
[outfd
].len
);
5496 else if (errno
== EMSGSIZE
)
5497 report_file_error ("Sending datagram", proc
);
5503 if (p
->gnutls_p
&& p
->gnutls_state
)
5504 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
5507 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
5508 rv
= (written
? 0 : -1);
5509 #ifdef ADAPTIVE_READ_BUFFERING
5510 if (p
->read_output_delay
> 0
5511 && p
->adaptive_read_buffering
== 1)
5513 p
->read_output_delay
= 0;
5514 process_output_delay_count
--;
5515 p
->read_output_skip
= 0;
5524 || errno
== EWOULDBLOCK
5527 /* Buffer is full. Wait, accepting input;
5528 that may allow the program
5529 to finish doing output and read more. */
5531 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5532 /* A gross hack to work around a bug in FreeBSD.
5533 In the following sequence, read(2) returns
5537 write(2) 954 bytes, get EAGAIN
5538 read(2) 1024 bytes in process_read_output
5539 read(2) 11 bytes in process_read_output
5541 That is, read(2) returns more bytes than have
5542 ever been written successfully. The 1033 bytes
5543 read are the 1022 bytes written successfully
5544 after processing (for example with CRs added if
5545 the terminal is set up that way which it is
5546 here). The same bytes will be seen again in a
5547 later read(2), without the CRs. */
5549 if (errno
== EAGAIN
)
5552 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5554 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5556 /* Put what we should have written in wait_queue. */
5557 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
5558 wait_reading_process_output (0, 20 * 1000 * 1000,
5559 0, 0, Qnil
, NULL
, 0);
5560 /* Reread queue, to see what is left. */
5563 else if (errno
== EPIPE
)
5565 p
->raw_status_new
= 0;
5566 pset_status (p
, list2 (Qexit
, make_number (256)));
5567 p
->tick
= ++process_tick
;
5568 deactivate_process (proc
);
5569 error ("process %s no longer connected to pipe; closed it",
5573 /* This is a real error. */
5574 report_file_error ("Writing to process", proc
);
5580 while (!NILP (p
->write_queue
));
5583 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5585 doc
: /* Send current contents of region as input to PROCESS.
5586 PROCESS may be a process, a buffer, the name of a process or buffer, or
5587 nil, indicating the current buffer's process.
5588 Called from program, takes three arguments, PROCESS, START and END.
5589 If the region is more than 500 characters long,
5590 it is sent in several bunches. This may happen even for shorter regions.
5591 Output from processes can arrive in between bunches. */)
5592 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5594 Lisp_Object proc
= get_process (process
);
5595 ptrdiff_t start_byte
, end_byte
;
5597 validate_region (&start
, &end
);
5599 start_byte
= CHAR_TO_BYTE (XINT (start
));
5600 end_byte
= CHAR_TO_BYTE (XINT (end
));
5602 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5603 move_gap_both (XINT (start
), start_byte
);
5605 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
5606 end_byte
- start_byte
, Fcurrent_buffer ());
5611 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5613 doc
: /* Send PROCESS the contents of STRING as input.
5614 PROCESS may be a process, a buffer, the name of a process or buffer, or
5615 nil, indicating the current buffer's process.
5616 If STRING is more than 500 characters long,
5617 it is sent in several bunches. This may happen even for shorter strings.
5618 Output from processes can arrive in between bunches. */)
5619 (Lisp_Object process
, Lisp_Object string
)
5622 CHECK_STRING (string
);
5623 proc
= get_process (process
);
5624 send_process (proc
, SSDATA (string
),
5625 SBYTES (string
), string
);
5629 /* Return the foreground process group for the tty/pty that
5630 the process P uses. */
5632 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5637 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5640 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5641 master side. Try the slave side. */
5642 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5646 ioctl (fd
, TIOCGPGRP
, &gid
);
5650 #endif /* defined (TIOCGPGRP ) */
5655 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5656 Sprocess_running_child_p
, 0, 1, 0,
5657 doc
: /* Return t if PROCESS has given the terminal to a child.
5658 If the operating system does not make it possible to find out,
5659 return t unconditionally. */)
5660 (Lisp_Object process
)
5662 /* Initialize in case ioctl doesn't exist or gives an error,
5663 in a way that will cause returning t. */
5666 struct Lisp_Process
*p
;
5668 proc
= get_process (process
);
5669 p
= XPROCESS (proc
);
5671 if (!EQ (p
->type
, Qreal
))
5672 error ("Process %s is not a subprocess",
5675 error ("Process %s is not active",
5678 gid
= emacs_get_tty_pgrp (p
);
5685 /* send a signal number SIGNO to PROCESS.
5686 If CURRENT_GROUP is t, that means send to the process group
5687 that currently owns the terminal being used to communicate with PROCESS.
5688 This is used for various commands in shell mode.
5689 If CURRENT_GROUP is lambda, that means send to the process group
5690 that currently owns the terminal, but only if it is NOT the shell itself.
5692 If NOMSG is false, insert signal-announcements into process's buffers
5695 If we can, we try to signal PROCESS by sending control characters
5696 down the pty. This allows us to signal inferiors who have changed
5697 their uid, for which kill would return an EPERM error. */
5700 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5704 struct Lisp_Process
*p
;
5708 proc
= get_process (process
);
5709 p
= XPROCESS (proc
);
5711 if (!EQ (p
->type
, Qreal
))
5712 error ("Process %s is not a subprocess",
5715 error ("Process %s is not active",
5719 current_group
= Qnil
;
5721 /* If we are using pgrps, get a pgrp number and make it negative. */
5722 if (NILP (current_group
))
5723 /* Send the signal to the shell's process group. */
5727 #ifdef SIGNALS_VIA_CHARACTERS
5728 /* If possible, send signals to the entire pgrp
5729 by sending an input character to it. */
5732 cc_t
*sig_char
= NULL
;
5734 tcgetattr (p
->infd
, &t
);
5739 sig_char
= &t
.c_cc
[VINTR
];
5743 sig_char
= &t
.c_cc
[VQUIT
];
5747 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5748 sig_char
= &t
.c_cc
[VSWTCH
];
5750 sig_char
= &t
.c_cc
[VSUSP
];
5755 if (sig_char
&& *sig_char
!= CDISABLE
)
5757 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5760 /* If we can't send the signal with a character,
5761 fall through and send it another way. */
5763 /* The code above may fall through if it can't
5764 handle the signal. */
5765 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5768 /* Get the current pgrp using the tty itself, if we have that.
5769 Otherwise, use the pty to get the pgrp.
5770 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5771 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5772 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5773 His patch indicates that if TIOCGPGRP returns an error, then
5774 we should just assume that p->pid is also the process group id. */
5776 gid
= emacs_get_tty_pgrp (p
);
5779 /* If we can't get the information, assume
5780 the shell owns the tty. */
5783 /* It is not clear whether anything really can set GID to -1.
5784 Perhaps on some system one of those ioctls can or could do so.
5785 Or perhaps this is vestigial. */
5788 #else /* ! defined (TIOCGPGRP ) */
5789 /* Can't select pgrps on this system, so we know that
5790 the child itself heads the pgrp. */
5792 #endif /* ! defined (TIOCGPGRP ) */
5794 /* If current_group is lambda, and the shell owns the terminal,
5795 don't send any signal. */
5796 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5801 if (signo
== SIGCONT
)
5803 p
->raw_status_new
= 0;
5804 pset_status (p
, Qrun
);
5805 p
->tick
= ++process_tick
;
5808 status_notify (NULL
, NULL
);
5809 redisplay_preserve_echo_area (13);
5815 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
5816 We don't know whether the bug is fixed in later HP-UX versions. */
5817 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
5821 /* If we don't have process groups, send the signal to the immediate
5822 subprocess. That isn't really right, but it's better than any
5823 obvious alternative. */
5824 pid_t pid
= no_pgrp
? gid
: - gid
;
5826 /* Do not kill an already-reaped process, as that could kill an
5827 innocent bystander that happens to have the same process ID. */
5829 block_child_signal (&oldset
);
5832 unblock_child_signal (&oldset
);
5835 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5836 doc
: /* Interrupt process PROCESS.
5837 PROCESS may be a process, a buffer, or the name of a process or buffer.
5838 No arg or nil means current buffer's process.
5839 Second arg CURRENT-GROUP non-nil means send signal to
5840 the current process-group of the process's controlling terminal
5841 rather than to the process's own process group.
5842 If the process is a shell, this means interrupt current subjob
5843 rather than the shell.
5845 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5846 don't send the signal. */)
5847 (Lisp_Object process
, Lisp_Object current_group
)
5849 process_send_signal (process
, SIGINT
, current_group
, 0);
5853 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5854 doc
: /* Kill 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
, SIGKILL
, current_group
, 0);
5862 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5863 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5864 See function `interrupt-process' for more details on usage. */)
5865 (Lisp_Object process
, Lisp_Object current_group
)
5867 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5871 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5872 doc
: /* Stop process PROCESS. May be process or name of one.
5873 See function `interrupt-process' for more details on usage.
5874 If PROCESS is a network or serial process, inhibit handling of incoming
5876 (Lisp_Object process
, Lisp_Object current_group
)
5878 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5880 struct Lisp_Process
*p
;
5882 p
= XPROCESS (process
);
5883 if (NILP (p
->command
)
5886 FD_CLR (p
->infd
, &input_wait_mask
);
5887 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5889 pset_command (p
, Qt
);
5893 error ("No SIGTSTP support");
5895 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5900 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5901 doc
: /* Continue process PROCESS. May be process or name of one.
5902 See function `interrupt-process' for more details on usage.
5903 If PROCESS is a network or serial process, resume handling of incoming
5905 (Lisp_Object process
, Lisp_Object current_group
)
5907 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5909 struct Lisp_Process
*p
;
5911 p
= XPROCESS (process
);
5912 if (EQ (p
->command
, Qt
)
5914 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5916 FD_SET (p
->infd
, &input_wait_mask
);
5917 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5919 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5920 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5921 #else /* not WINDOWSNT */
5922 tcflush (p
->infd
, TCIFLUSH
);
5923 #endif /* not WINDOWSNT */
5925 pset_command (p
, Qnil
);
5929 process_send_signal (process
, SIGCONT
, current_group
, 0);
5931 error ("No SIGCONT support");
5936 /* Return the integer value of the signal whose abbreviation is ABBR,
5937 or a negative number if there is no such signal. */
5939 abbr_to_signal (char const *name
)
5942 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
5944 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5947 for (i
= 0; i
< sizeof sigbuf
; i
++)
5949 sigbuf
[i
] = c_toupper (name
[i
]);
5951 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
5957 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5958 2, 2, "sProcess (name or number): \nnSignal code: ",
5959 doc
: /* Send PROCESS the signal with code SIGCODE.
5960 PROCESS may also be a number specifying the process id of the
5961 process to signal; in this case, the process need not be a child of
5963 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5964 (Lisp_Object process
, Lisp_Object sigcode
)
5969 if (STRINGP (process
))
5971 Lisp_Object tem
= Fget_process (process
);
5974 Lisp_Object process_number
=
5975 string_to_number (SSDATA (process
), 10, 1);
5976 if (INTEGERP (process_number
) || FLOATP (process_number
))
5977 tem
= process_number
;
5981 else if (!NUMBERP (process
))
5982 process
= get_process (process
);
5987 if (NUMBERP (process
))
5988 CONS_TO_INTEGER (process
, pid_t
, pid
);
5991 CHECK_PROCESS (process
);
5992 pid
= XPROCESS (process
)->pid
;
5994 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5997 if (INTEGERP (sigcode
))
5999 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6000 signo
= XINT (sigcode
);
6006 CHECK_SYMBOL (sigcode
);
6007 name
= SSDATA (SYMBOL_NAME (sigcode
));
6009 signo
= abbr_to_signal (name
);
6011 error ("Undefined signal name %s", name
);
6014 return make_number (kill (pid
, signo
));
6017 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6018 doc
: /* Make PROCESS see end-of-file in its input.
6019 EOF comes after any text already sent to it.
6020 PROCESS may be a process, a buffer, the name of a process or buffer, or
6021 nil, indicating the current buffer's process.
6022 If PROCESS is a network connection, or is a process communicating
6023 through a pipe (as opposed to a pty), then you cannot send any more
6024 text to PROCESS after you call this function.
6025 If PROCESS is a serial process, wait until all output written to the
6026 process has been transmitted to the serial port. */)
6027 (Lisp_Object process
)
6030 struct coding_system
*coding
= NULL
;
6033 if (DATAGRAM_CONN_P (process
))
6036 proc
= get_process (process
);
6037 outfd
= XPROCESS (proc
)->outfd
;
6039 coding
= proc_encode_coding_system
[outfd
];
6041 /* Make sure the process is really alive. */
6042 if (XPROCESS (proc
)->raw_status_new
)
6043 update_status (XPROCESS (proc
));
6044 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6045 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6047 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6049 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6050 send_process (proc
, "", 0, Qnil
);
6053 if (XPROCESS (proc
)->pty_flag
)
6054 send_process (proc
, "\004", 1, Qnil
);
6055 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6058 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6059 report_file_error ("Failed tcdrain", Qnil
);
6060 #endif /* not WINDOWSNT */
6061 /* Do nothing on Windows because writes are blocking. */
6065 struct Lisp_Process
*p
= XPROCESS (proc
);
6066 int old_outfd
= p
->outfd
;
6069 #ifdef HAVE_SHUTDOWN
6070 /* If this is a network connection, or socketpair is used
6071 for communication with the subprocess, call shutdown to cause EOF.
6072 (In some old system, shutdown to socketpair doesn't work.
6073 Then we just can't win.) */
6074 if (EQ (p
->type
, Qnetwork
)
6075 || p
->infd
== old_outfd
)
6076 shutdown (old_outfd
, 1);
6078 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6079 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6081 report_file_error ("Opening null device", Qnil
);
6082 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6083 p
->outfd
= new_outfd
;
6085 if (!proc_encode_coding_system
[new_outfd
])
6086 proc_encode_coding_system
[new_outfd
]
6087 = xmalloc (sizeof (struct coding_system
));
6090 *proc_encode_coding_system
[new_outfd
]
6091 = *proc_encode_coding_system
[old_outfd
];
6092 memset (proc_encode_coding_system
[old_outfd
], 0,
6093 sizeof (struct coding_system
));
6096 setup_coding_system (p
->encode_coding_system
,
6097 proc_encode_coding_system
[new_outfd
]);
6102 /* The main Emacs thread records child processes in three places:
6104 - Vprocess_alist, for asynchronous subprocesses, which are child
6105 processes visible to Lisp.
6107 - deleted_pid_list, for child processes invisible to Lisp,
6108 typically because of delete-process. These are recorded so that
6109 the processes can be reaped when they exit, so that the operating
6110 system's process table is not cluttered by zombies.
6112 - the local variable PID in Fcall_process, call_process_cleanup and
6113 call_process_kill, for synchronous subprocesses.
6114 record_unwind_protect is used to make sure this process is not
6115 forgotten: if the user interrupts call-process and the child
6116 process refuses to exit immediately even with two C-g's,
6117 call_process_kill adds PID's contents to deleted_pid_list before
6120 The main Emacs thread invokes waitpid only on child processes that
6121 it creates and that have not been reaped. This avoid races on
6122 platforms such as GTK, where other threads create their own
6123 subprocesses which the main thread should not reap. For example,
6124 if the main thread attempted to reap an already-reaped child, it
6125 might inadvertently reap a GTK-created process that happened to
6126 have the same process ID. */
6128 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6129 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6130 keep track of its own children. GNUstep is similar. */
6132 static void dummy_handler (int sig
) {}
6133 static signal_handler_t
volatile lib_child_handler
;
6135 /* Handle a SIGCHLD signal by looking for known child processes of
6136 Emacs whose status have changed. For each one found, record its
6139 All we do is change the status; we do not run sentinels or print
6140 notifications. That is saved for the next time keyboard input is
6141 done, in order to avoid timing errors.
6143 ** WARNING: this can be called during garbage collection.
6144 Therefore, it must not be fooled by the presence of mark bits in
6147 ** USG WARNING: Although it is not obvious from the documentation
6148 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6149 signal() before executing at least one wait(), otherwise the
6150 handler will be called again, resulting in an infinite loop. The
6151 relevant portion of the documentation reads "SIGCLD signals will be
6152 queued and the signal-catching function will be continually
6153 reentered until the queue is empty". Invoking signal() causes the
6154 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6157 ** Malloc WARNING: This should never call malloc either directly or
6158 indirectly; if it does, that is a bug */
6161 handle_child_signal (int sig
)
6163 Lisp_Object tail
, proc
;
6165 /* Find the process that signaled us, and record its status. */
6167 /* The process can have been deleted by Fdelete_process, or have
6168 been started asynchronously by Fcall_process. */
6169 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6171 bool all_pids_are_fixnums
6172 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6173 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6174 Lisp_Object head
= XCAR (tail
);
6179 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6182 if (INTEGERP (xpid
))
6183 deleted_pid
= XINT (xpid
);
6185 deleted_pid
= XFLOAT_DATA (xpid
);
6186 if (child_status_changed (deleted_pid
, 0, 0))
6188 if (STRINGP (XCDR (head
)))
6189 unlink (SSDATA (XCDR (head
)));
6190 XSETCAR (tail
, Qnil
);
6195 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6196 FOR_EACH_PROCESS (tail
, proc
)
6198 struct Lisp_Process
*p
= XPROCESS (proc
);
6202 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6204 /* Change the status of the process that was found. */
6205 p
->tick
= ++process_tick
;
6206 p
->raw_status
= status
;
6207 p
->raw_status_new
= 1;
6209 /* If process has terminated, stop waiting for its output. */
6210 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6212 bool clear_desc_flag
= 0;
6215 clear_desc_flag
= 1;
6217 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6218 if (clear_desc_flag
)
6220 FD_CLR (p
->infd
, &input_wait_mask
);
6221 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6227 lib_child_handler (sig
);
6228 #ifdef NS_IMPL_GNUSTEP
6229 /* NSTask in GNUstep sets its child handler each time it is called.
6230 So we must re-set ours. */
6231 catch_child_signal();
6236 deliver_child_signal (int sig
)
6238 deliver_process_signal (sig
, handle_child_signal
);
6243 exec_sentinel_error_handler (Lisp_Object error_val
)
6245 cmd_error_internal (error_val
, "error in process sentinel: ");
6247 update_echo_area ();
6248 Fsleep_for (make_number (2), Qnil
);
6253 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6255 Lisp_Object sentinel
, odeactivate
;
6256 struct Lisp_Process
*p
= XPROCESS (proc
);
6257 ptrdiff_t count
= SPECPDL_INDEX ();
6258 bool outer_running_asynch_code
= running_asynch_code
;
6259 int waiting
= waiting_for_user_input_p
;
6261 if (inhibit_sentinels
)
6264 /* No need to gcpro these, because all we do with them later
6265 is test them for EQness, and none of them should be a string. */
6266 odeactivate
= Vdeactivate_mark
;
6268 Lisp_Object obuffer
, okeymap
;
6269 XSETBUFFER (obuffer
, current_buffer
);
6270 okeymap
= BVAR (current_buffer
, keymap
);
6273 /* There's no good reason to let sentinels change the current
6274 buffer, and many callers of accept-process-output, sit-for, and
6275 friends don't expect current-buffer to be changed from under them. */
6276 record_unwind_current_buffer ();
6278 sentinel
= p
->sentinel
;
6280 /* Inhibit quit so that random quits don't screw up a running filter. */
6281 specbind (Qinhibit_quit
, Qt
);
6282 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6284 /* In case we get recursively called,
6285 and we already saved the match data nonrecursively,
6286 save the same match data in safely recursive fashion. */
6287 if (outer_running_asynch_code
)
6290 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6291 restore_search_regs ();
6292 record_unwind_save_match_data ();
6293 Fset_match_data (tem
, Qt
);
6296 /* For speed, if a search happens within this code,
6297 save the match data in a special nonrecursive fashion. */
6298 running_asynch_code
= 1;
6300 internal_condition_case_1 (read_process_output_call
,
6301 list3 (sentinel
, proc
, reason
),
6302 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6303 exec_sentinel_error_handler
);
6305 /* If we saved the match data nonrecursively, restore it now. */
6306 restore_search_regs ();
6307 running_asynch_code
= outer_running_asynch_code
;
6309 Vdeactivate_mark
= odeactivate
;
6311 /* Restore waiting_for_user_input_p as it was
6312 when we were called, in case the filter clobbered it. */
6313 waiting_for_user_input_p
= waiting
;
6316 if (! EQ (Fcurrent_buffer (), obuffer
)
6317 || ! EQ (current_buffer
->keymap
, okeymap
))
6319 /* But do it only if the caller is actually going to read events.
6320 Otherwise there's no need to make him wake up, and it could
6321 cause trouble (for example it would make sit_for return). */
6322 if (waiting_for_user_input_p
== -1)
6323 record_asynch_buffer_change ();
6325 unbind_to (count
, Qnil
);
6328 /* Report all recent events of a change in process status
6329 (either run the sentinel or output a message).
6330 This is usually done while Emacs is waiting for keyboard input
6331 but can be done at other times.
6333 Return positive if any input was received from WAIT_PROC (or from
6334 any process if WAIT_PROC is null), zero if input was attempted but
6335 none received, and negative if we didn't even try. */
6338 status_notify (struct Lisp_Process
*deleting_process
,
6339 struct Lisp_Process
*wait_proc
)
6342 Lisp_Object tail
, msg
;
6343 struct gcpro gcpro1
, gcpro2
;
6344 int got_some_input
= -1;
6348 /* We need to gcpro tail; if read_process_output calls a filter
6349 which deletes a process and removes the cons to which tail points
6350 from Vprocess_alist, and then causes a GC, tail is an unprotected
6354 /* Set this now, so that if new processes are created by sentinels
6355 that we run, we get called again to handle their status changes. */
6356 update_tick
= process_tick
;
6358 FOR_EACH_PROCESS (tail
, proc
)
6361 register struct Lisp_Process
*p
= XPROCESS (proc
);
6363 if (p
->tick
!= p
->update_tick
)
6365 p
->update_tick
= p
->tick
;
6367 /* If process is still active, read any output that remains. */
6368 while (! EQ (p
->filter
, Qt
)
6369 && ! EQ (p
->status
, Qconnect
)
6370 && ! EQ (p
->status
, Qlisten
)
6371 /* Network or serial process not stopped: */
6372 && ! EQ (p
->command
, Qt
)
6374 && p
!= deleting_process
)
6376 int nread
= read_process_output (proc
, p
->infd
);
6377 if (got_some_input
< nread
)
6378 got_some_input
= nread
;
6383 /* Get the text to use for the message. */
6384 if (p
->raw_status_new
)
6386 msg
= status_message (p
);
6388 /* If process is terminated, deactivate it or delete it. */
6390 if (CONSP (p
->status
))
6391 symbol
= XCAR (p
->status
);
6393 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6394 || EQ (symbol
, Qclosed
))
6396 if (delete_exited_processes
)
6397 remove_process (proc
);
6399 deactivate_process (proc
);
6402 /* The actions above may have further incremented p->tick.
6403 So set p->update_tick again so that an error in the sentinel will
6404 not cause this code to be run again. */
6405 p
->update_tick
= p
->tick
;
6406 /* Now output the message suitably. */
6407 exec_sentinel (proc
, msg
);
6411 update_mode_lines
= 24; /* In case buffers use %s in mode-line-format. */
6413 return got_some_input
;
6416 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
6417 Sinternal_default_process_sentinel
, 2, 2, 0,
6418 doc
: /* Function used as default sentinel for processes.
6419 This inserts a status message into the process's buffer, if there is one. */)
6420 (Lisp_Object proc
, Lisp_Object msg
)
6422 Lisp_Object buffer
, symbol
;
6423 struct Lisp_Process
*p
;
6424 CHECK_PROCESS (proc
);
6425 p
= XPROCESS (proc
);
6429 symbol
= XCAR (symbol
);
6431 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6434 struct buffer
*old
= current_buffer
;
6435 ptrdiff_t opoint
, opoint_byte
;
6436 ptrdiff_t before
, before_byte
;
6438 /* Avoid error if buffer is deleted
6439 (probably that's why the process is dead, too). */
6440 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
6442 Fset_buffer (buffer
);
6444 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
6445 msg
= (code_convert_string_norecord
6446 (msg
, Vlocale_coding_system
, 1));
6449 opoint_byte
= PT_BYTE
;
6450 /* Insert new output into buffer
6451 at the current end-of-output marker,
6452 thus preserving logical ordering of input and output. */
6453 if (XMARKER (p
->mark
)->buffer
)
6454 Fgoto_char (p
->mark
);
6456 SET_PT_BOTH (ZV
, ZV_BYTE
);
6459 before_byte
= PT_BYTE
;
6461 tem
= BVAR (current_buffer
, read_only
);
6462 bset_read_only (current_buffer
, Qnil
);
6463 insert_string ("\nProcess ");
6464 { /* FIXME: temporary kludge. */
6465 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
6466 insert_string (" ");
6468 bset_read_only (current_buffer
, tem
);
6469 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6471 if (opoint
>= before
)
6472 SET_PT_BOTH (opoint
+ (PT
- before
),
6473 opoint_byte
+ (PT_BYTE
- before_byte
));
6475 SET_PT_BOTH (opoint
, opoint_byte
);
6477 set_buffer_internal (old
);
6483 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6484 Sset_process_coding_system
, 1, 3, 0,
6485 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6486 DECODING will be used to decode subprocess output and ENCODING to
6487 encode subprocess input. */)
6488 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6490 register struct Lisp_Process
*p
;
6492 CHECK_PROCESS (process
);
6493 p
= XPROCESS (process
);
6495 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6497 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6498 Fcheck_coding_system (decoding
);
6499 Fcheck_coding_system (encoding
);
6500 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6501 pset_decode_coding_system (p
, decoding
);
6502 pset_encode_coding_system (p
, encoding
);
6503 setup_process_coding_systems (process
);
6508 DEFUN ("process-coding-system",
6509 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6510 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6511 (register Lisp_Object process
)
6513 CHECK_PROCESS (process
);
6514 return Fcons (XPROCESS (process
)->decode_coding_system
,
6515 XPROCESS (process
)->encode_coding_system
);
6518 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6519 Sset_process_filter_multibyte
, 2, 2, 0,
6520 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6521 If FLAG is non-nil, the filter is given multibyte strings.
6522 If FLAG is nil, the filter is given unibyte strings. In this case,
6523 all character code conversion except for end-of-line conversion is
6525 (Lisp_Object process
, Lisp_Object flag
)
6527 register struct Lisp_Process
*p
;
6529 CHECK_PROCESS (process
);
6530 p
= XPROCESS (process
);
6532 pset_decode_coding_system
6533 (p
, raw_text_coding_system (p
->decode_coding_system
));
6534 setup_process_coding_systems (process
);
6539 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6540 Sprocess_filter_multibyte_p
, 1, 1, 0,
6541 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6542 (Lisp_Object process
)
6544 register struct Lisp_Process
*p
;
6545 struct coding_system
*coding
;
6547 CHECK_PROCESS (process
);
6548 p
= XPROCESS (process
);
6549 coding
= proc_decode_coding_system
[p
->infd
];
6550 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6559 add_gpm_wait_descriptor (int desc
)
6561 add_keyboard_wait_descriptor (desc
);
6565 delete_gpm_wait_descriptor (int desc
)
6567 delete_keyboard_wait_descriptor (desc
);
6572 # ifdef USABLE_SIGIO
6574 /* Return true if *MASK has a bit set
6575 that corresponds to one of the keyboard input descriptors. */
6578 keyboard_bit_set (fd_set
*mask
)
6582 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6583 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6584 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6591 #else /* not subprocesses */
6593 /* Defined on msdos.c. */
6594 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
6595 struct timespec
*, void *);
6597 /* Implementation of wait_reading_process_output, assuming that there
6598 are no subprocesses. Used only by the MS-DOS build.
6600 Wait for timeout to elapse and/or keyboard input to be available.
6604 If negative, gobble data immediately available but don't wait for any.
6607 an additional duration to wait, measured in nanoseconds
6608 If TIME_LIMIT is zero, then:
6609 If NSECS == 0, there is no limit.
6610 If NSECS > 0, the timeout consists of NSECS only.
6611 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
6614 0 to ignore keyboard input, or
6615 1 to return when input is available, or
6616 -1 means caller will actually read the input, so don't throw to
6619 see full version for other parameters. We know that wait_proc will
6620 always be NULL, since `subprocesses' isn't defined.
6622 DO_DISPLAY means redisplay should be done to show subprocess
6623 output that arrives.
6625 Return positive if we received input from WAIT_PROC (or from any
6626 process if WAIT_PROC is null), zero if we attempted to receive
6627 input but got none, and negative if we didn't even try. */
6630 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
6632 Lisp_Object wait_for_cell
,
6633 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6636 struct timespec end_time
, timeout
;
6643 else if (TYPE_MAXIMUM (time_t) < time_limit
)
6644 time_limit
= TYPE_MAXIMUM (time_t);
6646 /* What does time_limit really mean? */
6647 if (time_limit
|| nsecs
> 0)
6649 timeout
= make_timespec (time_limit
, nsecs
);
6650 end_time
= timespec_add (current_timespec (), timeout
);
6653 /* Turn off periodic alarms (in case they are in use)
6654 and then turn off any other atimers,
6655 because the select emulator uses alarms. */
6657 turn_on_atimers (0);
6661 bool timeout_reduced_for_timers
= 0;
6662 fd_set waitchannels
;
6665 /* If calling from keyboard input, do not quit
6666 since we want to return C-g as an input character.
6667 Otherwise, do pending quit if requested. */
6671 /* Exit now if the cell we're waiting for became non-nil. */
6672 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6675 /* Compute time from now till when time limit is up. */
6676 /* Exit if already run out. */
6679 /* A negative timeout means
6680 gobble output available now
6681 but don't wait at all. */
6683 timeout
= make_timespec (0, 0);
6685 else if (time_limit
|| nsecs
> 0)
6687 struct timespec now
= current_timespec ();
6688 if (timespec_cmp (end_time
, now
) <= 0)
6690 timeout
= timespec_sub (end_time
, now
);
6694 timeout
= make_timespec (100000, 0);
6697 /* If our caller will not immediately handle keyboard events,
6698 run timer events directly.
6699 (Callers that will immediately read keyboard events
6700 call timer_delay on their own.) */
6701 if (NILP (wait_for_cell
))
6703 struct timespec timer_delay
;
6707 unsigned old_timers_run
= timers_run
;
6708 timer_delay
= timer_check ();
6709 if (timers_run
!= old_timers_run
&& do_display
)
6710 /* We must retry, since a timer may have requeued itself
6711 and that could alter the time delay. */
6712 redisplay_preserve_echo_area (14);
6716 while (!detect_input_pending ());
6718 /* If there is unread keyboard input, also return. */
6720 && requeued_events_pending_p ())
6723 if (timespec_valid_p (timer_delay
) && nsecs
>= 0)
6725 if (timespec_cmp (timer_delay
, timeout
) < 0)
6727 timeout
= timer_delay
;
6728 timeout_reduced_for_timers
= 1;
6733 /* Cause C-g and alarm signals to take immediate action,
6734 and cause input available signals to zero out timeout. */
6736 set_waiting_for_input (&timeout
);
6738 /* If a frame has been newly mapped and needs updating,
6739 reprocess its display stuff. */
6740 if (frame_garbaged
&& do_display
)
6742 clear_waiting_for_input ();
6743 redisplay_preserve_echo_area (15);
6745 set_waiting_for_input (&timeout
);
6748 /* Wait till there is something to do. */
6749 FD_ZERO (&waitchannels
);
6750 if (read_kbd
&& detect_input_pending ())
6754 if (read_kbd
|| !NILP (wait_for_cell
))
6755 FD_SET (0, &waitchannels
);
6756 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
6761 /* Make C-g and alarm signals set flags again */
6762 clear_waiting_for_input ();
6764 /* If we woke up due to SIGWINCH, actually change size now. */
6765 do_pending_window_change (0);
6767 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
6768 /* We waited the full specified time, so return now. */
6773 /* If the system call was interrupted, then go around the
6775 if (xerrno
== EINTR
)
6776 FD_ZERO (&waitchannels
);
6778 report_file_errno ("Failed select", Qnil
, xerrno
);
6781 /* Check for keyboard input */
6784 && detect_input_pending_run_timers (do_display
))
6786 swallow_events (do_display
);
6787 if (detect_input_pending_run_timers (do_display
))
6791 /* If there is unread keyboard input, also return. */
6793 && requeued_events_pending_p ())
6796 /* If wait_for_cell. check for keyboard input
6797 but don't run any timers.
6798 ??? (It seems wrong to me to check for keyboard
6799 input at all when wait_for_cell, but the code
6800 has been this way since July 1994.
6801 Try changing this after version 19.31.) */
6802 if (! NILP (wait_for_cell
)
6803 && detect_input_pending ())
6805 swallow_events (do_display
);
6806 if (detect_input_pending ())
6810 /* Exit now if the cell we're waiting for became non-nil. */
6811 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6820 #endif /* not subprocesses */
6822 /* The following functions are needed even if async subprocesses are
6823 not supported. Some of them are no-op stubs in that case. */
6825 /* Add DESC to the set of keyboard input descriptors. */
6828 add_keyboard_wait_descriptor (int desc
)
6830 #ifdef subprocesses /* actually means "not MSDOS" */
6831 FD_SET (desc
, &input_wait_mask
);
6832 FD_SET (desc
, &non_process_wait_mask
);
6833 if (desc
> max_input_desc
)
6834 max_input_desc
= desc
;
6838 /* From now on, do not expect DESC to give keyboard input. */
6841 delete_keyboard_wait_descriptor (int desc
)
6844 FD_CLR (desc
, &input_wait_mask
);
6845 FD_CLR (desc
, &non_process_wait_mask
);
6846 delete_input_desc (desc
);
6850 /* Setup coding systems of PROCESS. */
6853 setup_process_coding_systems (Lisp_Object process
)
6856 struct Lisp_Process
*p
= XPROCESS (process
);
6858 int outch
= p
->outfd
;
6859 Lisp_Object coding_system
;
6861 if (inch
< 0 || outch
< 0)
6864 if (!proc_decode_coding_system
[inch
])
6865 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
6866 coding_system
= p
->decode_coding_system
;
6867 if (EQ (p
->filter
, Qinternal_default_process_filter
)
6868 && BUFFERP (p
->buffer
))
6870 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6871 coding_system
= raw_text_coding_system (coding_system
);
6873 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6875 if (!proc_encode_coding_system
[outch
])
6876 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
6877 setup_coding_system (p
->encode_coding_system
,
6878 proc_encode_coding_system
[outch
]);
6882 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6883 doc
: /* Return the (or a) process associated with BUFFER.
6884 BUFFER may be a buffer or the name of one. */)
6885 (register Lisp_Object buffer
)
6888 register Lisp_Object buf
, tail
, proc
;
6890 if (NILP (buffer
)) return Qnil
;
6891 buf
= Fget_buffer (buffer
);
6892 if (NILP (buf
)) return Qnil
;
6894 FOR_EACH_PROCESS (tail
, proc
)
6895 if (EQ (XPROCESS (proc
)->buffer
, buf
))
6897 #endif /* subprocesses */
6901 DEFUN ("process-inherit-coding-system-flag",
6902 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6904 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6905 If this flag is t, `buffer-file-coding-system' of the buffer
6906 associated with PROCESS will inherit the coding system used to decode
6907 the process output. */)
6908 (register Lisp_Object process
)
6911 CHECK_PROCESS (process
);
6912 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6914 /* Ignore the argument and return the value of
6915 inherit-process-coding-system. */
6916 return inherit_process_coding_system
? Qt
: Qnil
;
6920 /* Kill all processes associated with `buffer'.
6921 If `buffer' is nil, kill all processes */
6924 kill_buffer_processes (Lisp_Object buffer
)
6927 Lisp_Object tail
, proc
;
6929 FOR_EACH_PROCESS (tail
, proc
)
6930 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
6932 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6933 Fdelete_process (proc
);
6934 else if (XPROCESS (proc
)->infd
>= 0)
6935 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6937 #else /* subprocesses */
6938 /* Since we have no subprocesses, this does nothing. */
6939 #endif /* subprocesses */
6942 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
6943 Swaiting_for_user_input_p
, 0, 0, 0,
6944 doc
: /* Return non-nil if Emacs is waiting for input from the user.
6945 This is intended for use by asynchronous process output filters and sentinels. */)
6949 return (waiting_for_user_input_p
? Qt
: Qnil
);
6955 /* Stop reading input from keyboard sources. */
6958 hold_keyboard_input (void)
6963 /* Resume reading input from keyboard sources. */
6966 unhold_keyboard_input (void)
6971 /* Return true if keyboard input is on hold, zero otherwise. */
6974 kbd_on_hold_p (void)
6976 return kbd_is_on_hold
;
6980 /* Enumeration of and access to system processes a-la ps(1). */
6982 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
6984 doc
: /* Return a list of numerical process IDs of all running processes.
6985 If this functionality is unsupported, return nil.
6987 See `process-attributes' for getting attributes of a process given its ID. */)
6990 return list_system_processes ();
6993 DEFUN ("process-attributes", Fprocess_attributes
,
6994 Sprocess_attributes
, 1, 1, 0,
6995 doc
: /* Return attributes of the process given by its PID, a number.
6997 Value is an alist where each element is a cons cell of the form
7001 If this functionality is unsupported, the value is nil.
7003 See `list-system-processes' for getting a list of all process IDs.
7005 The KEYs of the attributes that this function may return are listed
7006 below, together with the type of the associated VALUE (in parentheses).
7007 Not all platforms support all of these attributes; unsupported
7008 attributes will not appear in the returned alist.
7009 Unless explicitly indicated otherwise, numbers can have either
7010 integer or floating point values.
7012 euid -- Effective user User ID of the process (number)
7013 user -- User name corresponding to euid (string)
7014 egid -- Effective user Group ID of the process (number)
7015 group -- Group name corresponding to egid (string)
7016 comm -- Command name (executable name only) (string)
7017 state -- Process state code, such as "S", "R", or "T" (string)
7018 ppid -- Parent process ID (number)
7019 pgrp -- Process group ID (number)
7020 sess -- Session ID, i.e. process ID of session leader (number)
7021 ttname -- Controlling tty name (string)
7022 tpgid -- ID of foreground process group on the process's tty (number)
7023 minflt -- number of minor page faults (number)
7024 majflt -- number of major page faults (number)
7025 cminflt -- cumulative number of minor page faults (number)
7026 cmajflt -- cumulative number of major page faults (number)
7027 utime -- user time used by the process, in (current-time) format,
7028 which is a list of integers (HIGH LOW USEC PSEC)
7029 stime -- system time used by the process (current-time)
7030 time -- sum of utime and stime (current-time)
7031 cutime -- user time used by the process and its children (current-time)
7032 cstime -- system time used by the process and its children (current-time)
7033 ctime -- sum of cutime and cstime (current-time)
7034 pri -- priority of the process (number)
7035 nice -- nice value of the process (number)
7036 thcount -- process thread count (number)
7037 start -- time the process started (current-time)
7038 vsize -- virtual memory size of the process in KB's (number)
7039 rss -- resident set size of the process in KB's (number)
7040 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7041 pcpu -- percents of CPU time used by the process (floating-point number)
7042 pmem -- percents of total physical memory used by process's resident set
7043 (floating-point number)
7044 args -- command line which invoked the process (string). */)
7047 return system_process_attributes (pid
);
7051 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7052 Invoke this after init_process_emacs, and after glib and/or GNUstep
7053 futz with the SIGCHLD handler, but before Emacs forks any children.
7054 This function's caller should block SIGCHLD. */
7057 catch_child_signal (void)
7059 struct sigaction action
, old_action
;
7061 emacs_sigaction_init (&action
, deliver_child_signal
);
7062 block_child_signal (&oldset
);
7063 sigaction (SIGCHLD
, &action
, &old_action
);
7064 eassert (! (old_action
.sa_flags
& SA_SIGINFO
));
7066 if (old_action
.sa_handler
!= deliver_child_signal
)
7068 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7070 : old_action
.sa_handler
);
7071 unblock_child_signal (&oldset
);
7073 #endif /* subprocesses */
7076 /* This is not called "init_process" because that is the name of a
7077 Mach system call, so it would cause problems on Darwin systems. */
7079 init_process_emacs (void)
7084 inhibit_sentinels
= 0;
7087 if (! noninteractive
|| initialized
)
7090 #if defined HAVE_GLIB && !defined WINDOWSNT
7091 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7092 this should always fail, but is enough to initialize glib's
7093 private SIGCHLD handler, allowing catch_child_signal to copy
7094 it into lib_child_handler. */
7095 g_source_unref (g_child_watch_source_new (getpid ()));
7097 catch_child_signal ();
7100 FD_ZERO (&input_wait_mask
);
7101 FD_ZERO (&non_keyboard_wait_mask
);
7102 FD_ZERO (&non_process_wait_mask
);
7103 FD_ZERO (&write_mask
);
7104 max_process_desc
= max_input_desc
= -1;
7105 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7107 #ifdef NON_BLOCKING_CONNECT
7108 FD_ZERO (&connect_wait_mask
);
7109 num_pending_connects
= 0;
7112 #ifdef ADAPTIVE_READ_BUFFERING
7113 process_output_delay_count
= 0;
7114 process_output_skip
= 0;
7117 /* Don't do this, it caused infinite select loops. The display
7118 method should call add_keyboard_wait_descriptor on stdin if it
7121 FD_SET (0, &input_wait_mask
);
7124 Vprocess_alist
= Qnil
;
7125 deleted_pid_list
= Qnil
;
7126 for (i
= 0; i
< FD_SETSIZE
; i
++)
7128 chan_process
[i
] = Qnil
;
7129 proc_buffered_char
[i
] = -1;
7131 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7132 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7133 #ifdef DATAGRAM_SOCKETS
7134 memset (datagram_address
, 0, sizeof datagram_address
);
7138 Lisp_Object subfeatures
= Qnil
;
7139 const struct socket_options
*sopt
;
7141 #define ADD_SUBFEATURE(key, val) \
7142 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7144 #ifdef NON_BLOCKING_CONNECT
7145 ADD_SUBFEATURE (QCnowait
, Qt
);
7147 #ifdef DATAGRAM_SOCKETS
7148 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7150 #ifdef HAVE_SEQPACKET
7151 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7153 #ifdef HAVE_LOCAL_SOCKETS
7154 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7156 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7158 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7160 #ifdef HAVE_GETSOCKNAME
7161 ADD_SUBFEATURE (QCservice
, Qt
);
7163 ADD_SUBFEATURE (QCserver
, Qt
);
7165 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7166 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7168 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7171 #if defined (DARWIN_OS)
7172 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7173 processes. As such, we only change the default value. */
7176 char const *release
= (STRINGP (Voperating_system_release
)
7177 ? SSDATA (Voperating_system_release
)
7179 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7180 Vprocess_connection_type
= Qnil
;
7184 #endif /* subprocesses */
7189 syms_of_process (void)
7193 DEFSYM (Qprocessp
, "processp");
7194 DEFSYM (Qrun
, "run");
7195 DEFSYM (Qstop
, "stop");
7196 DEFSYM (Qsignal
, "signal");
7198 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7201 Qexit = intern_c_string ("exit");
7202 staticpro (&Qexit); */
7204 DEFSYM (Qopen
, "open");
7205 DEFSYM (Qclosed
, "closed");
7206 DEFSYM (Qconnect
, "connect");
7207 DEFSYM (Qfailed
, "failed");
7208 DEFSYM (Qlisten
, "listen");
7209 DEFSYM (Qlocal
, "local");
7210 DEFSYM (Qipv4
, "ipv4");
7212 DEFSYM (Qipv6
, "ipv6");
7214 DEFSYM (Qdatagram
, "datagram");
7215 DEFSYM (Qseqpacket
, "seqpacket");
7217 DEFSYM (QCport
, ":port");
7218 DEFSYM (QCspeed
, ":speed");
7219 DEFSYM (QCprocess
, ":process");
7221 DEFSYM (QCbytesize
, ":bytesize");
7222 DEFSYM (QCstopbits
, ":stopbits");
7223 DEFSYM (QCparity
, ":parity");
7224 DEFSYM (Qodd
, "odd");
7225 DEFSYM (Qeven
, "even");
7226 DEFSYM (QCflowcontrol
, ":flowcontrol");
7229 DEFSYM (QCsummary
, ":summary");
7231 DEFSYM (Qreal
, "real");
7232 DEFSYM (Qnetwork
, "network");
7233 DEFSYM (Qserial
, "serial");
7234 DEFSYM (QCbuffer
, ":buffer");
7235 DEFSYM (QChost
, ":host");
7236 DEFSYM (QCservice
, ":service");
7237 DEFSYM (QClocal
, ":local");
7238 DEFSYM (QCremote
, ":remote");
7239 DEFSYM (QCcoding
, ":coding");
7240 DEFSYM (QCserver
, ":server");
7241 DEFSYM (QCnowait
, ":nowait");
7242 DEFSYM (QCsentinel
, ":sentinel");
7243 DEFSYM (QClog
, ":log");
7244 DEFSYM (QCnoquery
, ":noquery");
7245 DEFSYM (QCstop
, ":stop");
7246 DEFSYM (QCoptions
, ":options");
7247 DEFSYM (QCplist
, ":plist");
7249 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7251 staticpro (&Vprocess_alist
);
7252 staticpro (&deleted_pid_list
);
7254 #endif /* subprocesses */
7256 DEFSYM (QCname
, ":name");
7257 DEFSYM (QCtype
, ":type");
7259 DEFSYM (Qeuid
, "euid");
7260 DEFSYM (Qegid
, "egid");
7261 DEFSYM (Quser
, "user");
7262 DEFSYM (Qgroup
, "group");
7263 DEFSYM (Qcomm
, "comm");
7264 DEFSYM (Qstate
, "state");
7265 DEFSYM (Qppid
, "ppid");
7266 DEFSYM (Qpgrp
, "pgrp");
7267 DEFSYM (Qsess
, "sess");
7268 DEFSYM (Qttname
, "ttname");
7269 DEFSYM (Qtpgid
, "tpgid");
7270 DEFSYM (Qminflt
, "minflt");
7271 DEFSYM (Qmajflt
, "majflt");
7272 DEFSYM (Qcminflt
, "cminflt");
7273 DEFSYM (Qcmajflt
, "cmajflt");
7274 DEFSYM (Qutime
, "utime");
7275 DEFSYM (Qstime
, "stime");
7276 DEFSYM (Qtime
, "time");
7277 DEFSYM (Qcutime
, "cutime");
7278 DEFSYM (Qcstime
, "cstime");
7279 DEFSYM (Qctime
, "ctime");
7281 DEFSYM (Qinternal_default_process_sentinel
,
7282 "internal-default-process-sentinel");
7283 DEFSYM (Qinternal_default_process_filter
,
7284 "internal-default-process-filter");
7286 DEFSYM (Qpri
, "pri");
7287 DEFSYM (Qnice
, "nice");
7288 DEFSYM (Qthcount
, "thcount");
7289 DEFSYM (Qstart
, "start");
7290 DEFSYM (Qvsize
, "vsize");
7291 DEFSYM (Qrss
, "rss");
7292 DEFSYM (Qetime
, "etime");
7293 DEFSYM (Qpcpu
, "pcpu");
7294 DEFSYM (Qpmem
, "pmem");
7295 DEFSYM (Qargs
, "args");
7297 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7298 doc
: /* Non-nil means delete processes immediately when they exit.
7299 A value of nil means don't delete them until `list-processes' is run. */);
7301 delete_exited_processes
= 1;
7304 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7305 doc
: /* Control type of device used to communicate with subprocesses.
7306 Values are nil to use a pipe, or t or `pty' to use a pty.
7307 The value has no effect if the system has no ptys or if all ptys are busy:
7308 then a pipe is used in any case.
7309 The value takes effect when `start-process' is called. */);
7310 Vprocess_connection_type
= Qt
;
7312 #ifdef ADAPTIVE_READ_BUFFERING
7313 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7314 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7315 On some systems, when Emacs reads the output from a subprocess, the output data
7316 is read in very small blocks, potentially resulting in very poor performance.
7317 This behavior can be remedied to some extent by setting this variable to a
7318 non-nil value, as it will automatically delay reading from such processes, to
7319 allow them to produce more output before Emacs tries to read it.
7320 If the value is t, the delay is reset after each write to the process; any other
7321 non-nil value means that the delay is not reset on write.
7322 The variable takes effect when `start-process' is called. */);
7323 Vprocess_adaptive_read_buffering
= Qt
;
7326 defsubr (&Sprocessp
);
7327 defsubr (&Sget_process
);
7328 defsubr (&Sdelete_process
);
7329 defsubr (&Sprocess_status
);
7330 defsubr (&Sprocess_exit_status
);
7331 defsubr (&Sprocess_id
);
7332 defsubr (&Sprocess_name
);
7333 defsubr (&Sprocess_tty_name
);
7334 defsubr (&Sprocess_command
);
7335 defsubr (&Sset_process_buffer
);
7336 defsubr (&Sprocess_buffer
);
7337 defsubr (&Sprocess_mark
);
7338 defsubr (&Sset_process_filter
);
7339 defsubr (&Sprocess_filter
);
7340 defsubr (&Sset_process_sentinel
);
7341 defsubr (&Sprocess_sentinel
);
7342 defsubr (&Sset_process_window_size
);
7343 defsubr (&Sset_process_inherit_coding_system_flag
);
7344 defsubr (&Sset_process_query_on_exit_flag
);
7345 defsubr (&Sprocess_query_on_exit_flag
);
7346 defsubr (&Sprocess_contact
);
7347 defsubr (&Sprocess_plist
);
7348 defsubr (&Sset_process_plist
);
7349 defsubr (&Sprocess_list
);
7350 defsubr (&Sstart_process
);
7351 defsubr (&Sserial_process_configure
);
7352 defsubr (&Smake_serial_process
);
7353 defsubr (&Sset_network_process_option
);
7354 defsubr (&Smake_network_process
);
7355 defsubr (&Sformat_network_address
);
7356 defsubr (&Snetwork_interface_list
);
7357 defsubr (&Snetwork_interface_info
);
7358 #ifdef DATAGRAM_SOCKETS
7359 defsubr (&Sprocess_datagram_address
);
7360 defsubr (&Sset_process_datagram_address
);
7362 defsubr (&Saccept_process_output
);
7363 defsubr (&Sprocess_send_region
);
7364 defsubr (&Sprocess_send_string
);
7365 defsubr (&Sinterrupt_process
);
7366 defsubr (&Skill_process
);
7367 defsubr (&Squit_process
);
7368 defsubr (&Sstop_process
);
7369 defsubr (&Scontinue_process
);
7370 defsubr (&Sprocess_running_child_p
);
7371 defsubr (&Sprocess_send_eof
);
7372 defsubr (&Ssignal_process
);
7373 defsubr (&Swaiting_for_user_input_p
);
7374 defsubr (&Sprocess_type
);
7375 defsubr (&Sinternal_default_process_sentinel
);
7376 defsubr (&Sinternal_default_process_filter
);
7377 defsubr (&Sset_process_coding_system
);
7378 defsubr (&Sprocess_coding_system
);
7379 defsubr (&Sset_process_filter_multibyte
);
7380 defsubr (&Sprocess_filter_multibyte_p
);
7382 #endif /* subprocesses */
7384 defsubr (&Sget_buffer_process
);
7385 defsubr (&Sprocess_inherit_coding_system_flag
);
7386 defsubr (&Slist_system_processes
);
7387 defsubr (&Sprocess_attributes
);