1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2014 Free Software
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #endif /* HAVE_PWD_H */
35 #include "sysselect.h"
36 #include "blockinput.h"
38 #if defined DARWIN_OS || defined __FreeBSD__
39 # include <sys/sysctl.h>
43 /* Sparc/ARM machine/frame.h has 'struct frame' which conflicts with Emacs's
44 'struct frame', so rename it. */
45 # define frame freebsd_frame
46 # include <sys/user.h>
54 #define write sys_write
56 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
59 #endif /* not WINDOWSNT */
61 #include <sys/types.h>
65 /* Get SI_SRPC_DOMAIN, if it is available. */
66 #ifdef HAVE_SYS_SYSTEMINFO_H
67 #include <sys/systeminfo.h>
70 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
74 #ifdef HAVE_SYS_RESOURCE_H
75 #include <sys/resource.h>
77 #include <sys/param.h>
84 #ifdef HAVE_SYS_UTSNAME_H
85 #include <sys/utsname.h>
87 #endif /* HAVE_SYS_UTSNAME_H */
92 #include "termhooks.h"
95 #include "dispextern.h"
97 #include "cm.h" /* for reset_sys_modes */
101 /* In process.h which conflicts with the local copy. */
103 int _cdecl
_spawnlp (int, const char *, const char *, ...);
104 int _cdecl
_getpid (void);
107 #include "syssignal.h"
110 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
112 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
115 /* Declare here, including term.h is problematic on some systems. */
116 extern void tputs (const char *, int, int (*)(int));
118 static const int baud_convert
[] =
120 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
121 1800, 2400, 4800, 9600, 19200, 38400
125 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
127 /* Return the current working directory. Returns NULL on errors.
128 Any other returned value must be freed with free. This is used
129 only when get_current_dir_name is not defined on the system. */
131 get_current_dir_name (void)
134 char *pwd
= getenv ("PWD");
135 struct stat dotstat
, pwdstat
;
136 /* If PWD is accurate, use it instead of calling getcwd. PWD is
137 sometimes a nicer name, and using it may avoid a fatal error if a
138 parent directory is searchable but not readable. */
140 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
141 && stat (pwd
, &pwdstat
) == 0
142 && stat (".", &dotstat
) == 0
143 && dotstat
.st_ino
== pwdstat
.st_ino
144 && dotstat
.st_dev
== pwdstat
.st_dev
146 && strlen (pwd
) < MAXPATHLEN
150 buf
= malloc (strlen (pwd
) + 1);
157 size_t buf_size
= 1024;
158 buf
= malloc (buf_size
);
163 if (getcwd (buf
, buf_size
) == buf
)
167 int tmp_errno
= errno
;
173 buf
= realloc (buf
, buf_size
);
183 /* Discard pending input on all input descriptors. */
186 discard_tty_input (void)
189 struct emacs_tty buf
;
194 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
195 while (dos_keyread () != -1)
197 #else /* not MSDOS */
199 struct tty_display_info
*tty
;
200 for (tty
= tty_list
; tty
; tty
= tty
->next
)
202 if (tty
->input
) /* Is the device suspended? */
204 emacs_get_tty (fileno (tty
->input
), &buf
);
205 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
209 #endif /* not MSDOS */
210 #endif /* not WINDOWSNT */
216 /* Arrange for character C to be read as the next input from
218 XXX What if we have multiple ttys?
224 if (! (FRAMEP (selected_frame
)
225 && FRAME_LIVE_P (XFRAME (selected_frame
))
226 && FRAME_TERMCAP_P (XFRAME (selected_frame
))))
229 /* Should perhaps error if in batch mode */
231 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
232 #else /* no TIOCSTI */
233 error ("Cannot stuff terminal input characters in this version of Unix");
234 #endif /* no TIOCSTI */
240 init_baud_rate (int fd
)
250 #else /* not DOS_NT */
255 emacs_ospeed
= cfgetospeed (&sg
);
256 #endif /* not DOS_NT */
259 baud_rate
= (emacs_ospeed
< ARRAYELTS (baud_convert
)
260 ? baud_convert
[emacs_ospeed
] : 9600);
269 /* Wait for the subprocess with process id CHILD to terminate or change status.
270 CHILD must be a child process that has not been reaped.
271 If STATUS is non-null, store the waitpid-style exit status into *STATUS
272 and tell wait_reading_process_output that it needs to look around.
273 Use waitpid-style OPTIONS when waiting.
274 If INTERRUPTIBLE, this function is interruptible by a signal.
276 Return CHILD if successful, 0 if no status is available;
277 the latter is possible only when options & NOHANG. */
279 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
283 /* Invoke waitpid only with a known process ID; do not invoke
284 waitpid with a nonpositive argument. Otherwise, Emacs might
285 reap an unwanted process by mistake. For example, invoking
286 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
287 so that another thread running glib won't find them. */
290 while ((pid
= waitpid (child
, status
, options
)) < 0)
292 /* Check that CHILD is a child process that has not been reaped,
293 and that STATUS and OPTIONS are valid. Otherwise abort,
294 as continuing after this internal error could cause Emacs to
295 become confused and kill innocent-victim processes. */
299 /* Note: the MS-Windows emulation of waitpid calls QUIT
305 /* If successful and status is requested, tell wait_reading_process_output
306 that it needs to wake up and look around. */
307 if (pid
&& status
&& input_available_clear_time
)
308 *input_available_clear_time
= make_timespec (0, 0);
313 /* Wait for the subprocess with process id CHILD to terminate.
314 CHILD must be a child process that has not been reaped.
315 If STATUS is non-null, store the waitpid-style exit status into *STATUS
316 and tell wait_reading_process_output that it needs to look around.
317 If INTERRUPTIBLE, this function is interruptible by a signal. */
319 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
321 get_child_status (child
, status
, 0, interruptible
);
324 /* Report whether the subprocess with process id CHILD has changed status.
325 Termination counts as a change of status.
326 CHILD must be a child process that has not been reaped.
327 If STATUS is non-null, store the waitpid-style exit status into *STATUS
328 and tell wait_reading_process_output that it needs to look around.
329 Use waitpid-style OPTIONS to check status, but do not wait.
331 Return CHILD if successful, 0 if no status is available because
332 the process's state has not changed. */
334 child_status_changed (pid_t child
, int *status
, int options
)
336 return get_child_status (child
, status
, WNOHANG
| options
, 0);
340 /* Set up the terminal at the other end of a pseudo-terminal that
341 we will be controlling an inferior through.
342 It should not echo or do line-editing, since that is done
343 in Emacs. No padding needed for insertion into an Emacs buffer. */
346 child_setup_tty (int out
)
351 emacs_get_tty (out
, &s
);
352 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
353 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
355 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
356 Some versions of GNU Hurd do not have FFDLY? */
358 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
359 /* No output delays */
361 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
362 /* No output delays */
365 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
366 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
368 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
371 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
374 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
376 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
377 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
378 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
379 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
382 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
385 #ifdef SIGNALS_VIA_CHARACTERS
386 /* the QUIT and INTR character are used in process_send_signal
387 so set them here to something useful. */
388 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
389 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
390 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
391 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
392 #endif /* not SIGNALS_VIA_CHARACTERS */
395 /* Also, PTY overloads NUL and BREAK.
396 don't ignore break, but don't signal either, so it looks like NUL. */
397 s
.main
.c_iflag
&= ~IGNBRK
;
398 s
.main
.c_iflag
&= ~BRKINT
;
399 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
400 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
401 would force it to 0377. That looks like duplicated code. */
402 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
405 /* We originally enabled ICANON (and set VEOF to 04), and then had
406 process.c send additional EOF chars to flush the output when faced
407 with long lines, but this leads to weird effects when the
408 subprocess has disabled ICANON and ends up seeing those spurious
409 extra EOFs. So we don't send EOFs any more in
410 process.c:send_process. First we tried to disable ICANON by
411 default, so if a subsprocess sets up ICANON, it's his problem (or
412 the Elisp package that talks to it) to deal with lines that are
413 too long. But this disables some features, such as the ability
414 to send EOF signals. So we re-enabled ICANON but there is no
415 more "send eof to flush" going on (which is wrong and unportable
416 in itself). The correct way to handle too much output is to
417 buffer what could not be written and then write it again when
418 select returns ok for writing. This has it own set of
419 problems. Write is now asynchronous, is that a problem? How much
420 do we buffer, and what do we do when that limit is reached? */
422 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
423 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
424 #if 0 /* These settings only apply to non-ICANON mode. */
425 s
.main
.c_cc
[VMIN
] = 1;
426 s
.main
.c_cc
[VTIME
] = 0;
429 emacs_set_tty (out
, &s
, 0);
430 #endif /* not WINDOWSNT */
432 #endif /* not MSDOS */
435 /* Record a signal code and the action for it. */
439 struct sigaction action
;
442 static void save_signal_handlers (struct save_signal
*);
443 static void restore_signal_handlers (struct save_signal
*);
445 /* Suspend the Emacs process; give terminal to its superior. */
453 /* On a system where suspending is not implemented,
454 instead fork a subshell and let it talk directly to the terminal
461 /* Fork a subshell. */
466 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
469 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
471 char oldwd
[MAX_UTF8_PATH
];
476 struct save_signal saved_handlers
[5];
477 char *str
= SSDATA (encode_current_directory ());
483 char *volatile str_volatile
= str
;
490 error ("Can't spawn subshell");
492 saved_handlers
[0].code
= SIGINT
;
493 saved_handlers
[1].code
= SIGQUIT
;
494 saved_handlers
[2].code
= SIGTERM
;
496 saved_handlers
[3].code
= SIGIO
;
497 saved_handlers
[4].code
= 0;
499 saved_handlers
[3].code
= 0;
503 save_signal_handlers (saved_handlers
);
510 #ifdef DOS_NT /* MW, Aug 1993 */
511 getcwd (oldwd
, sizeof oldwd
);
513 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
516 sh
= egetenv ("SHELL");
520 /* Use our buffer's default directory for the subshell. */
521 if (chdir (str
) != 0)
525 _exit (EXIT_CANCELED
);
529 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
531 char *epwd
= getenv ("PWD");
532 char old_pwd
[MAXPATHLEN
+1+4];
534 /* If PWD is set, pass it with corrected value. */
537 strcpy (old_pwd
, epwd
);
538 setenv ("PWD", str
, 1);
541 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
543 putenv (old_pwd
); /* restore previous value */
545 #else /* not MSDOS */
547 /* Waits for process completion */
548 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
549 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
551 write (1, "Can't execute subshell", 22);
552 #else /* not WINDOWSNT */
553 execlp (sh
, sh
, (char *) 0);
555 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
556 #endif /* not WINDOWSNT */
557 #endif /* not MSDOS */
560 /* Do this now if we did not do it before. */
562 save_signal_handlers (saved_handlers
);
566 wait_for_termination (pid
, &status
, 0);
568 restore_signal_handlers (saved_handlers
);
572 save_signal_handlers (struct save_signal
*saved_handlers
)
574 while (saved_handlers
->code
)
576 struct sigaction action
;
577 emacs_sigaction_init (&action
, SIG_IGN
);
578 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
584 restore_signal_handlers (struct save_signal
*saved_handlers
)
586 while (saved_handlers
->code
)
588 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
594 static int old_fcntl_flags
[FD_SETSIZE
];
601 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
602 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
603 interrupts_deferred
= 0;
612 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
626 sigemptyset (&unblocked
);
628 sigaddset (&unblocked
, SIGWINCH
);
630 sigaddset (&unblocked
, SIGIO
);
631 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
633 interrupts_deferred
= 0;
638 unrequest_sigio (void)
646 sigemptyset (&blocked
);
648 sigaddset (&blocked
, SIGWINCH
);
650 sigaddset (&blocked
, SIGIO
);
651 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
652 interrupts_deferred
= 1;
660 signal (SIGIO
, SIG_IGN
);
668 block_child_signal (sigset_t
*oldset
)
671 sigemptyset (&blocked
);
672 sigaddset (&blocked
, SIGCHLD
);
673 sigaddset (&blocked
, SIGINT
);
674 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
677 /* Unblock SIGCHLD. */
680 unblock_child_signal (sigset_t
const *oldset
)
682 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
687 /* Saving and restoring the process group of Emacs's terminal. */
689 /* The process group of which Emacs was a member when it initially
692 If Emacs was in its own process group (i.e. inherited_pgroup ==
693 getpid ()), then we know we're running under a shell with job
694 control (Emacs would never be run as part of a pipeline).
697 If Emacs was not in its own process group, then we know we're
698 running under a shell (or a caller) that doesn't know how to
699 separate itself from Emacs (like sh). Emacs must be in its own
700 process group in order to receive SIGIO correctly. In this
701 situation, we put ourselves in our own pgroup, forcibly set the
702 tty's pgroup to our pgroup, and make sure to restore and reinstate
703 the tty's pgroup just like any other terminal setting. If
704 inherited_group was not the tty's pgroup, then we'll get a
705 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
706 it goes foreground in the future, which is what should happen. */
708 static pid_t inherited_pgroup
;
711 init_foreground_group (void)
713 pid_t pgrp
= getpgrp ();
714 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
717 /* Block and unblock SIGTTOU. */
720 block_tty_out_signal (sigset_t
*oldset
)
724 sigemptyset (&blocked
);
725 sigaddset (&blocked
, SIGTTOU
);
726 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
731 unblock_tty_out_signal (sigset_t
const *oldset
)
734 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
738 /* Safely set a controlling terminal FD's process group to PGID.
739 If we are not in the foreground already, POSIX requires tcsetpgrp
740 to deliver a SIGTTOU signal, which would stop us. This is an
741 annoyance, so temporarily ignore the signal.
743 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
744 skip all this unless SIGTTOU is defined. */
746 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
751 block_tty_out_signal (&oldset
);
752 tcsetpgrp (fd
, pgid
);
753 unblock_tty_out_signal (&oldset
);
758 /* Split off the foreground process group to Emacs alone. When we are
759 in the foreground, but not started in our own process group,
760 redirect the tty device handle FD to point to our own process
761 group. FD must be the file descriptor of the controlling tty. */
763 narrow_foreground_group (int fd
)
765 if (inherited_pgroup
&& setpgid (0, 0) == 0)
766 tcsetpgrp_without_stopping (fd
, getpid ());
769 /* Set the tty to our original foreground group. */
771 widen_foreground_group (int fd
)
773 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
774 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
777 /* Getting and setting emacs_tty structures. */
779 /* Set *TC to the parameters associated with the terminal FD,
780 or clear it if the parameters are not available.
781 Return 0 on success, -1 on failure. */
783 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
785 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
786 memset (&settings
->main
, 0, sizeof (settings
->main
));
789 HANDLE h
= (HANDLE
)_get_osfhandle (fd
);
792 if (h
&& h
!= INVALID_HANDLE_VALUE
&& GetConsoleMode (h
, &console_mode
))
794 settings
->main
= console_mode
;
797 #endif /* WINDOWSNT */
800 /* We have those nifty POSIX tcmumbleattr functions. */
801 return tcgetattr (fd
, &settings
->main
);
806 /* Set the parameters of the tty on FD according to the contents of
807 *SETTINGS. If FLUSHP, discard input.
808 Return 0 if all went well, and -1 (setting errno) if anything failed. */
811 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
813 /* Set the primary parameters - baud rate, character size, etcetera. */
816 HANDLE h
= (HANDLE
)_get_osfhandle (fd
);
818 if (h
&& h
!= INVALID_HANDLE_VALUE
)
822 /* Assume the handle is open for input. */
824 FlushConsoleInputBuffer (h
);
825 new_mode
= settings
->main
;
826 SetConsoleMode (h
, new_mode
);
828 #endif /* WINDOWSNT */
831 /* We have those nifty POSIX tcmumbleattr functions.
832 William J. Smith <wjs@wiis.wang.com> writes:
833 "POSIX 1003.1 defines tcsetattr to return success if it was
834 able to perform any of the requested actions, even if some
835 of the requested actions could not be performed.
836 We must read settings back to ensure tty setup properly.
837 AIX requires this to keep tty from hanging occasionally." */
838 /* This make sure that we don't loop indefinitely in here. */
839 for (i
= 0 ; i
< 10 ; i
++)
840 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
851 memset (&new, 0, sizeof (new));
852 /* Get the current settings, and see if they're what we asked for. */
853 tcgetattr (fd
, &new);
854 /* We cannot use memcmp on the whole structure here because under
855 * aix386 the termios structure has some reserved field that may
858 if ( new.c_iflag
== settings
->main
.c_iflag
859 && new.c_oflag
== settings
->main
.c_oflag
860 && new.c_cflag
== settings
->main
.c_cflag
861 && new.c_lflag
== settings
->main
.c_lflag
862 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
869 /* We have survived the tempest. */
876 static int old_fcntl_owner
[FD_SETSIZE
];
877 #endif /* F_SETOWN */
879 /* This may also be defined in stdio,
880 but if so, this does no harm,
881 and using the same name avoids wasting the other one's space. */
884 unsigned char _sobuf
[BUFSIZ
+8];
889 /* Initialize the terminal mode on all tty devices that are currently
893 init_all_sys_modes (void)
895 struct tty_display_info
*tty
;
896 for (tty
= tty_list
; tty
; tty
= tty
->next
)
897 init_sys_modes (tty
);
900 /* Initialize the terminal mode on the given tty device. */
903 init_sys_modes (struct tty_display_info
*tty_out
)
905 struct emacs_tty tty
;
906 Lisp_Object terminal
;
908 Vtty_erase_char
= Qnil
;
913 if (!tty_out
->output
)
914 return; /* The tty is suspended. */
916 narrow_foreground_group (fileno (tty_out
->input
));
918 if (! tty_out
->old_tty
)
919 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
921 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
923 tty
= *tty_out
->old_tty
;
925 #if !defined (DOS_NT)
926 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
928 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
929 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
930 #ifdef INLCR /* I'm just being cautious,
931 since I can't check how widespread INLCR is--rms. */
932 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
935 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
937 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
938 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
940 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
942 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
943 if (tty_out
->flow_control
)
945 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
947 tty
.main
.c_iflag
&= ~IXANY
;
951 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
952 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
954 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
956 if (tty_out
->meta_key
)
958 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
959 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
963 XSETTERMINAL(terminal
, tty_out
->terminal
);
964 if (!NILP (Fcontrolling_tty_p (terminal
)))
966 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
967 /* Set up C-g for both SIGQUIT and SIGINT.
968 We don't know which we will get, but we handle both alike
969 so which one it really gives us does not matter. */
970 tty
.main
.c_cc
[VQUIT
] = quit_char
;
974 /* We normally don't get interrupt or quit signals from tty
975 devices other than our controlling terminal; therefore,
976 we must handle C-g as normal input. Unfortunately, this
977 means that the interrupt and quit feature must be
978 disabled on secondary ttys, or we would not even see the
981 Note that even though emacsclient could have special code
982 to pass SIGINT to Emacs, we should _not_ enable
983 interrupt/quit keys for emacsclient frames. This means
984 that we can't break out of loops in C code from a
985 secondary tty frame, but we can always decide what
986 display the C-g came from, which is more important from a
987 usability point of view. (Consider the case when two
988 people work together using the same Emacs instance.) */
989 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
990 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
992 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
993 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
995 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1000 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
1003 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
1004 #endif /* V_DSUSP */
1005 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1006 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1009 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1012 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1013 #endif /* VREPRINT */
1015 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1016 #endif /* VWERASE */
1018 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1019 #endif /* VDISCARD */
1021 if (tty_out
->flow_control
)
1024 tty
.main
.c_cc
[VSTART
] = '\021';
1027 tty
.main
.c_cc
[VSTOP
] = '\023';
1033 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1036 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1041 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1042 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1043 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1044 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1045 if (tty_out
->flow_control
)
1048 tty
.main
.c_cc
[VSTART
] = '\021';
1051 tty
.main
.c_cc
[VSTOP
] = '\023';
1054 /* Also, PTY overloads NUL and BREAK.
1055 don't ignore break, but don't signal either, so it looks like NUL.
1056 This really serves a purpose only if running in an XTERM window
1057 or via TELNET or the like, but does no harm elsewhere. */
1058 tty
.main
.c_iflag
&= ~IGNBRK
;
1059 tty
.main
.c_iflag
&= ~BRKINT
;
1061 #endif /* not DOS_NT */
1063 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1064 if (!tty_out
->term_initted
)
1065 internal_terminal_init ();
1066 dos_ttraw (tty_out
);
1069 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1071 /* This code added to insure that, if flow-control is not to be used,
1072 we have an unlocked terminal at the start. */
1075 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1078 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1081 #if !defined (DOS_NT)
1083 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1088 if (interrupt_input
)
1090 old_fcntl_owner
[fileno (tty_out
->input
)] =
1091 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1092 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1093 init_sigio (fileno (tty_out
->input
));
1095 if (gpm_tty
== tty_out
)
1097 /* Arrange for mouse events to give us SIGIO signals. */
1098 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1099 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1100 init_sigio (gpm_fd
);
1102 #endif /* HAVE_GPM */
1104 #endif /* F_GETOWN */
1107 /* This symbol is defined on recent USG systems.
1108 Someone says without this call USG won't really buffer the file
1109 even with a call to setbuf. */
1110 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1112 setbuf (tty_out
->output
, (char *) _sobuf
);
1115 if (tty_out
->terminal
->set_terminal_modes_hook
)
1116 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1118 if (!tty_out
->term_initted
)
1120 Lisp_Object tail
, frame
;
1121 FOR_EACH_FRAME (tail
, frame
)
1123 /* XXX This needs to be revised. */
1124 if (FRAME_TERMCAP_P (XFRAME (frame
))
1125 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1126 init_frame_faces (XFRAME (frame
));
1130 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1132 /* We used to call "direct_output_forward_char(0)" here,
1133 but it's not clear why, since it may not do anything anyway. */
1137 Lisp_Object tail
, frame
;
1139 FOR_EACH_FRAME (tail
, frame
)
1141 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1142 || FRAME_MSDOS_P (XFRAME (frame
)))
1143 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1144 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1148 tty_out
->term_initted
= 1;
1151 /* Return true if safe to use tabs in output.
1152 At the time this is called, init_sys_modes has not been done yet. */
1155 tabs_safe_p (int fd
)
1157 struct emacs_tty etty
;
1159 emacs_get_tty (fd
, &etty
);
1162 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1163 #else /* not TABDLY */
1165 #endif /* not TABDLY */
1171 /* Discard echoing. */
1174 suppress_echo_on_tty (int fd
)
1176 struct emacs_tty etty
;
1178 emacs_get_tty (fd
, &etty
);
1180 /* Set raw input mode. */
1183 etty
.main
.c_lflag
&= ~ICANON
; /* Disable buffering */
1184 etty
.main
.c_lflag
&= ~ECHO
; /* Disable echoing */
1185 #endif /* ! WINDOWSNT */
1186 emacs_set_tty (fd
, &etty
, 0);
1189 /* Get terminal size from system.
1190 Store number of lines into *HEIGHTP and width into *WIDTHP.
1191 We store 0 if there's no valid information. */
1194 get_tty_size (int fd
, int *widthp
, int *heightp
)
1196 #if defined TIOCGWINSZ
1199 struct winsize size
;
1201 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1202 *widthp
= *heightp
= 0;
1205 *widthp
= size
.ws_col
;
1206 *heightp
= size
.ws_row
;
1209 #elif defined TIOCGSIZE
1211 /* SunOS - style. */
1212 struct ttysize size
;
1214 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1215 *widthp
= *heightp
= 0;
1218 *widthp
= size
.ts_cols
;
1219 *heightp
= size
.ts_lines
;
1222 #elif defined WINDOWSNT
1224 CONSOLE_SCREEN_BUFFER_INFO info
;
1225 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1227 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1228 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1231 *widthp
= *heightp
= 0;
1235 *widthp
= ScreenCols ();
1236 *heightp
= ScreenRows ();
1238 #else /* system doesn't know size */
1246 /* Set the logical window size associated with descriptor FD
1247 to HEIGHT and WIDTH. This is used mainly with ptys.
1248 Return a negative value on failure. */
1251 set_window_size (int fd
, int height
, int width
)
1256 struct winsize size
;
1257 size
.ws_row
= height
;
1258 size
.ws_col
= width
;
1260 return ioctl (fd
, TIOCSWINSZ
, &size
);
1265 /* SunOS - style. */
1266 struct ttysize size
;
1267 size
.ts_lines
= height
;
1268 size
.ts_cols
= width
;
1270 return ioctl (fd
, TIOCGSIZE
, &size
);
1273 #endif /* not SunOS-style */
1274 #endif /* not BSD-style */
1279 /* Prepare all terminal devices for exiting Emacs. */
1282 reset_all_sys_modes (void)
1284 struct tty_display_info
*tty
;
1285 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1286 reset_sys_modes (tty
);
1289 /* Prepare the terminal for closing it; move the cursor to the
1290 bottom of the frame, turn off interrupt-driven I/O, etc. */
1293 reset_sys_modes (struct tty_display_info
*tty_out
)
1300 if (!tty_out
->term_initted
)
1303 if (!tty_out
->output
)
1304 return; /* The tty is suspended. */
1306 /* Go to and clear the last line of the terminal. */
1308 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1310 /* Code adapted from tty_clear_end_of_line. */
1311 if (tty_out
->TS_clr_line
)
1313 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1316 { /* have to do it the hard way */
1318 tty_turn_off_insert (tty_out
);
1320 for (i
= cursorX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1322 fputc (' ', tty_out
->output
);
1326 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1327 fflush (tty_out
->output
);
1329 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1330 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1332 /* Avoid possible loss of output when changing terminal modes. */
1333 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1338 if (interrupt_input
)
1340 reset_sigio (fileno (tty_out
->input
));
1341 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1342 old_fcntl_owner
[fileno (tty_out
->input
)]);
1344 #endif /* F_SETOWN */
1345 fcntl (fileno (tty_out
->input
), F_SETFL
,
1346 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1349 if (tty_out
->old_tty
)
1350 while (emacs_set_tty (fileno (tty_out
->input
),
1351 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1354 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1358 widen_foreground_group (fileno (tty_out
->input
));
1363 /* Set up the proper status flags for use of a pty. */
1368 /* I'm told that TOICREMOTE does not mean control chars
1369 "can't be sent" but rather that they don't have
1370 input-editing or signaling effects.
1371 That should be good, because we have other ways
1372 to do those things in Emacs.
1373 However, telnet mode seems not to work on 4.2.
1374 So TIOCREMOTE is turned off now. */
1376 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1377 will hang. In particular, the "timeout" feature (which
1378 causes a read to return if there is no data available)
1379 does this. Also it is known that telnet mode will hang
1380 in such a way that Emacs must be stopped (perhaps this
1381 is the same problem).
1383 If TIOCREMOTE is turned off, then there is a bug in
1384 hp-ux which sometimes loses data. Apparently the
1385 code which blocks the master process when the internal
1386 buffer fills up does not work. Other than this,
1387 though, everything else seems to work fine.
1389 Since the latter lossage is more benign, we may as well
1390 lose that way. -- cph */
1392 #if defined (UNIX98_PTYS)
1395 ioctl (fd
, FIONBIO
, &on
);
1400 #endif /* HAVE_PTYS */
1403 #include <sys/socket.h>
1405 #endif /* HAVE_SOCKETS */
1408 #ifndef HAVE_H_ERRNO
1411 #endif /* TRY_AGAIN */
1414 init_system_name (void)
1416 #ifndef HAVE_GETHOSTNAME
1419 Vsystem_name
= build_string (uts
.nodename
);
1420 #else /* HAVE_GETHOSTNAME */
1421 char *hostname_alloc
= NULL
;
1422 char hostname_buf
[256];
1423 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1424 char *hostname
= hostname_buf
;
1426 /* Try to get the host name; if the buffer is too short, try
1427 again. Apparently, the only indication gethostname gives of
1428 whether the buffer was large enough is the presence or absence
1429 of a '\0' in the string. Eech. */
1432 gethostname (hostname
, hostname_size
- 1);
1433 hostname
[hostname_size
- 1] = '\0';
1435 /* Was the buffer large enough for the '\0'? */
1436 if (strlen (hostname
) < hostname_size
- 1)
1439 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1440 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1443 /* Turn the hostname into the official, fully-qualified hostname.
1444 Don't do this if we're going to dump; this can confuse system
1445 libraries on some machines and make the dumped emacs core dump. */
1448 #endif /* not CANNOT_DUMP */
1449 if (! strchr (hostname
, '.'))
1452 #ifdef HAVE_GETADDRINFO
1453 struct addrinfo
*res
;
1454 struct addrinfo hints
;
1457 memset (&hints
, 0, sizeof (hints
));
1458 hints
.ai_socktype
= SOCK_STREAM
;
1459 hints
.ai_flags
= AI_CANONNAME
;
1461 for (count
= 0;; count
++)
1463 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1464 || ret
!= EAI_AGAIN
)
1469 Fsleep_for (make_number (1), Qnil
);
1474 struct addrinfo
*it
= res
;
1477 char *fqdn
= it
->ai_canonname
;
1478 if (fqdn
&& strchr (fqdn
, '.')
1479 && strcmp (fqdn
, "localhost.localdomain") != 0)
1485 ptrdiff_t len
= strlen (it
->ai_canonname
);
1486 if (hostname_size
<= len
)
1488 hostname_size
= len
+ 1;
1489 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1492 strcpy (hostname
, it
->ai_canonname
);
1496 #else /* !HAVE_GETADDRINFO */
1498 for (count
= 0;; count
++)
1504 hp
= gethostbyname (hostname
);
1506 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1513 Fsleep_for (make_number (1), Qnil
);
1518 char *fqdn
= (char *) hp
->h_name
;
1520 if (!strchr (fqdn
, '.'))
1522 /* We still don't have a fully qualified domain name.
1523 Try to find one in the list of alternate names */
1524 char **alias
= hp
->h_aliases
;
1526 && (!strchr (*alias
, '.')
1527 || !strcmp (*alias
, "localhost.localdomain")))
1534 #endif /* !HAVE_GETADDRINFO */
1536 #endif /* HAVE_SOCKETS */
1537 Vsystem_name
= build_string (hostname
);
1538 xfree (hostname_alloc
);
1539 #endif /* HAVE_GETHOSTNAME */
1542 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1543 if (*p
== ' ' || *p
== '\t')
1548 sigset_t empty_mask
;
1550 static struct sigaction process_fatal_action
;
1553 emacs_sigaction_flags (void)
1556 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1557 'select') to reset their timeout on some platforms (e.g.,
1558 HP-UX 11), which is not what we want. Also, when Emacs is
1559 interactive, we don't want SA_RESTART because we need to poll
1560 for pending input so we need long-running syscalls to be interrupted
1561 after a signal that sets pending_signals.
1563 Non-interactive keyboard input goes through stdio, where we
1564 always want restartable system calls. */
1571 /* Store into *ACTION a signal action suitable for Emacs, with handler
1574 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1576 sigemptyset (&action
->sa_mask
);
1578 /* When handling a signal, block nonfatal system signals that are caught
1579 by Emacs. This makes race conditions less likely. */
1580 sigaddset (&action
->sa_mask
, SIGALRM
);
1582 sigaddset (&action
->sa_mask
, SIGCHLD
);
1585 sigaddset (&action
->sa_mask
, SIGDANGER
);
1587 #ifdef PROFILER_CPU_SUPPORT
1588 sigaddset (&action
->sa_mask
, SIGPROF
);
1591 sigaddset (&action
->sa_mask
, SIGWINCH
);
1593 if (! noninteractive
)
1595 sigaddset (&action
->sa_mask
, SIGINT
);
1596 sigaddset (&action
->sa_mask
, SIGQUIT
);
1598 sigaddset (&action
->sa_mask
, SIGIO
);
1602 action
->sa_handler
= handler
;
1603 action
->sa_flags
= emacs_sigaction_flags ();
1606 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1607 static pthread_t main_thread
;
1610 /* SIG has arrived at the current process. Deliver it to the main
1611 thread, which should handle it with HANDLER.
1613 If we are on the main thread, handle the signal SIG with HANDLER.
1614 Otherwise, redirect the signal to the main thread, blocking it from
1615 this thread. POSIX says any thread can receive a signal that is
1616 associated with a process, process group, or asynchronous event.
1617 On GNU/Linux that is not true, but for other systems (FreeBSD at
1620 deliver_process_signal (int sig
, signal_handler_t handler
)
1622 /* Preserve errno, to avoid race conditions with signal handlers that
1623 might change errno. Races can occur even in single-threaded hosts. */
1624 int old_errno
= errno
;
1626 bool on_main_thread
= true;
1627 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1628 if (! pthread_equal (pthread_self (), main_thread
))
1631 sigemptyset (&blocked
);
1632 sigaddset (&blocked
, sig
);
1633 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1634 pthread_kill (main_thread
, sig
);
1635 on_main_thread
= false;
1644 /* Static location to save a fatal backtrace in a thread.
1645 FIXME: If two subsidiary threads fail simultaneously, the resulting
1646 backtrace may be garbage. */
1647 enum { BACKTRACE_LIMIT_MAX
= 500 };
1648 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1649 static int thread_backtrace_npointers
;
1651 /* SIG has arrived at the current thread.
1652 If we are on the main thread, handle the signal SIG with HANDLER.
1653 Otherwise, this is a fatal error in the handling thread. */
1655 deliver_thread_signal (int sig
, signal_handler_t handler
)
1657 int old_errno
= errno
;
1659 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1660 if (! pthread_equal (pthread_self (), main_thread
))
1662 thread_backtrace_npointers
1663 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1664 sigaction (sig
, &process_fatal_action
, 0);
1665 pthread_kill (main_thread
, sig
);
1667 /* Avoid further damage while the main thread is exiting. */
1669 sigsuspend (&empty_mask
);
1677 #if !HAVE_DECL_SYS_SIGLIST
1679 # ifdef _sys_siglist
1680 # define sys_siglist _sys_siglist
1681 # elif HAVE_DECL___SYS_SIGLIST
1682 # define sys_siglist __sys_siglist
1684 # define sys_siglist my_sys_siglist
1685 static char const *sys_siglist
[NSIG
];
1690 # define sys_siglist_entries _sys_nsig
1692 # define sys_siglist_entries NSIG
1695 /* Handle bus errors, invalid instruction, etc. */
1697 handle_fatal_signal (int sig
)
1699 terminate_due_to_signal (sig
, 40);
1703 deliver_fatal_signal (int sig
)
1705 deliver_process_signal (sig
, handle_fatal_signal
);
1709 deliver_fatal_thread_signal (int sig
)
1711 deliver_thread_signal (sig
, handle_fatal_signal
);
1714 static _Noreturn
void
1715 handle_arith_signal (int sig
)
1717 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1718 xsignal0 (Qarith_error
);
1721 #ifdef HAVE_STACK_OVERFLOW_HANDLING
1723 /* True if stack grows down as expected on most OS/ABI variants. */
1725 static bool stack_grows_down
;
1727 /* Alternate stack used by SIGSEGV handler below. */
1729 static unsigned char sigsegv_stack
[SIGSTKSZ
];
1731 /* Attempt to recover from SIGSEGV caused by C stack overflow. */
1734 handle_sigsegv (int sig
, siginfo_t
*siginfo
, void *arg
)
1736 /* Hard GC error may lead to stack overflow caused by
1737 too nested calls to mark_object. No way to survive. */
1738 if (!gc_in_progress
)
1742 if (!getrlimit (RLIMIT_STACK
, &rlim
))
1744 enum { STACK_EXTRA
= 16 * 1024 };
1745 char *fault_addr
= (char *) siginfo
->si_addr
;
1746 unsigned long used
= (stack_grows_down
1747 ? stack_bottom
- fault_addr
1748 : fault_addr
- stack_bottom
);
1750 if (used
+ STACK_EXTRA
> rlim
.rlim_cur
)
1751 /* Most likely this is it. */
1752 siglongjmp (return_to_command_loop
, 1);
1757 /* Return true if we have successfully set up SIGSEGV handler on alternate
1758 stack. Otherwise we just treat SIGSEGV among the rest of fatal signals. */
1763 struct sigaction sa
;
1766 stack_grows_down
= ((char *) &ss
< stack_bottom
);
1768 ss
.ss_sp
= sigsegv_stack
;
1769 ss
.ss_size
= sizeof (sigsegv_stack
);
1771 if (sigaltstack (&ss
, NULL
) < 0)
1774 sigfillset (&sa
.sa_mask
);
1775 sa
.sa_sigaction
= handle_sigsegv
;
1776 sa
.sa_flags
= SA_SIGINFO
| SA_ONSTACK
| emacs_sigaction_flags ();
1777 return sigaction (SIGSEGV
, &sa
, NULL
) < 0 ? 0 : 1;
1780 #else /* not HAVE_STACK_OVERFLOW_HANDLING */
1788 #endif /* HAVE_STACK_OVERFLOW_HANDLING */
1791 deliver_arith_signal (int sig
)
1793 deliver_thread_signal (sig
, handle_arith_signal
);
1798 /* Handler for SIGDANGER. */
1800 handle_danger_signal (int sig
)
1802 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1804 /* It might be unsafe to call do_auto_save now. */
1805 force_auto_save_soon ();
1809 deliver_danger_signal (int sig
)
1811 deliver_process_signal (sig
, handle_danger_signal
);
1815 /* Treat SIG as a terminating signal, unless it is already ignored and
1816 we are in --batch mode. Among other things, this makes nohup work. */
1818 maybe_fatal_sig (int sig
)
1820 bool catch_sig
= !noninteractive
;
1823 struct sigaction old_action
;
1824 sigaction (sig
, 0, &old_action
);
1825 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1828 sigaction (sig
, &process_fatal_action
, 0);
1832 init_signals (bool dumping
)
1834 struct sigaction thread_fatal_action
;
1835 struct sigaction action
;
1837 sigemptyset (&empty_mask
);
1839 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1840 main_thread
= pthread_self ();
1843 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1846 sys_siglist
[SIGABRT
] = "Aborted";
1848 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1850 sys_siglist
[SIGALRM
] = "Alarm clock";
1852 sys_siglist
[SIGBUS
] = "Bus error";
1855 sys_siglist
[SIGCHLD
] = "Child status changed";
1858 sys_siglist
[SIGCONT
] = "Continued";
1861 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1864 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1867 sys_siglist
[SIGEMT
] = "Emulation trap";
1869 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1871 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1874 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1876 sys_siglist
[SIGHUP
] = "Hangup";
1877 sys_siglist
[SIGILL
] = "Illegal instruction";
1878 sys_siglist
[SIGINT
] = "Interrupt";
1880 sys_siglist
[SIGIO
] = "I/O possible";
1883 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1886 sys_siglist
[SIGIOT
] = "IOT trap";
1888 sys_siglist
[SIGKILL
] = "Killed";
1890 sys_siglist
[SIGLOST
] = "Resource lost";
1893 sys_siglist
[SIGLWP
] = "SIGLWP";
1896 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1899 sys_siglist
[SIGWIND
] = "SIGPHONE";
1901 sys_siglist
[SIGPIPE
] = "Broken pipe";
1903 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1906 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1909 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1912 sys_siglist
[SIGPWR
] = "Power-fail restart";
1914 sys_siglist
[SIGQUIT
] = "Quit";
1916 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1919 sys_siglist
[SIGSAK
] = "Secure attention";
1921 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1923 sys_siglist
[SIGSOUND
] = "Sound completed";
1926 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1929 sys_siglist
[SIGSTP
] = "Stopped (user)";
1932 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1934 sys_siglist
[SIGTERM
] = "Terminated";
1936 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1939 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1942 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1945 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1948 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1951 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1954 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1957 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1960 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1963 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1966 sys_siglist
[SIGWINCH
] = "Window size changed";
1969 sys_siglist
[SIGWIND
] = "SIGWIND";
1972 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1975 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1978 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1980 /* Don't alter signal handlers if dumping. On some machines,
1981 changing signal handlers sets static data that would make signals
1982 fail to work right when the dumped Emacs is run. */
1986 sigfillset (&process_fatal_action
.sa_mask
);
1987 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1988 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1990 sigfillset (&thread_fatal_action
.sa_mask
);
1991 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1992 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1994 /* SIGINT may need special treatment on MS-Windows. See
1995 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1996 Please update the doc of kill-emacs, kill-emacs-hook, and
1997 NEWS if you change this. */
1999 maybe_fatal_sig (SIGHUP
);
2000 maybe_fatal_sig (SIGINT
);
2001 maybe_fatal_sig (SIGTERM
);
2003 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
2004 However, in batch mode leave SIGPIPE alone, as that causes Emacs
2005 to behave more like typical batch applications do. */
2006 if (! noninteractive
)
2007 signal (SIGPIPE
, SIG_IGN
);
2009 sigaction (SIGQUIT
, &process_fatal_action
, 0);
2010 sigaction (SIGILL
, &thread_fatal_action
, 0);
2011 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
2013 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
2014 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
2015 interpreter's floating point operations, so treat SIGFPE as an
2016 arith-error if it arises in the main thread. */
2017 if (IEEE_FLOATING_POINT
)
2018 sigaction (SIGFPE
, &thread_fatal_action
, 0);
2021 emacs_sigaction_init (&action
, deliver_arith_signal
);
2022 sigaction (SIGFPE
, &action
, 0);
2026 add_user_signal (SIGUSR1
, "sigusr1");
2029 add_user_signal (SIGUSR2
, "sigusr2");
2031 sigaction (SIGABRT
, &thread_fatal_action
, 0);
2033 sigaction (SIGPRE
, &thread_fatal_action
, 0);
2036 sigaction (SIGORE
, &thread_fatal_action
, 0);
2039 sigaction (SIGUME
, &thread_fatal_action
, 0);
2042 sigaction (SIGDLK
, &process_fatal_action
, 0);
2045 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
2048 sigaction (SIGIOT
, &thread_fatal_action
, 0);
2051 sigaction (SIGEMT
, &thread_fatal_action
, 0);
2054 sigaction (SIGBUS
, &thread_fatal_action
, 0);
2056 if (!init_sigsegv ())
2057 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
2059 sigaction (SIGSYS
, &thread_fatal_action
, 0);
2061 sigaction (SIGTERM
, &process_fatal_action
, 0);
2063 signal (SIGPROF
, SIG_IGN
);
2066 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
2069 sigaction (SIGXCPU
, &process_fatal_action
, 0);
2072 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
2076 /* This just means available memory is getting low. */
2077 emacs_sigaction_init (&action
, deliver_danger_signal
);
2078 sigaction (SIGDANGER
, &action
, 0);
2081 /* AIX-specific signals. */
2083 sigaction (SIGGRANT
, &process_fatal_action
, 0);
2086 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
2089 sigaction (SIGMSG
, &process_fatal_action
, 0);
2092 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
2095 sigaction (SIGSAK
, &process_fatal_action
, 0);
2098 sigaction (SIGSOUND
, &process_fatal_action
, 0);
2101 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
2111 /* Figure out how many bits the system's random number generator uses.
2112 `random' and `lrand48' are assumed to return 31 usable bits.
2113 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2114 so we'll shift it and treat it like the 15-bit USG `rand'. */
2118 # define RAND_BITS 31
2119 # else /* !HAVE_RANDOM */
2120 # ifdef HAVE_LRAND48
2121 # define RAND_BITS 31
2122 # define random lrand48
2123 # else /* !HAVE_LRAND48 */
2124 # define RAND_BITS 15
2125 # if RAND_MAX == 32767
2126 # define random rand
2127 # else /* RAND_MAX != 32767 */
2128 # if RAND_MAX == 2147483647
2129 # define random() (rand () >> 16)
2130 # else /* RAND_MAX != 2147483647 */
2132 # define random rand
2134 # define random() (rand () >> 16)
2136 # endif /* RAND_MAX != 2147483647 */
2137 # endif /* RAND_MAX != 32767 */
2138 # endif /* !HAVE_LRAND48 */
2139 # endif /* !HAVE_RANDOM */
2140 #endif /* !RAND_BITS */
2143 seed_random (void *seed
, ptrdiff_t seed_size
)
2145 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2146 unsigned int arg
= 0;
2150 unsigned char *argp
= (unsigned char *) &arg
;
2151 unsigned char *seedp
= seed
;
2153 for (i
= 0; i
< seed_size
; i
++)
2154 argp
[i
% sizeof arg
] ^= seedp
[i
];
2158 # ifdef HAVE_LRAND48
2169 struct timespec t
= current_timespec ();
2170 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2171 seed_random (&v
, sizeof v
);
2175 * Return a nonnegative random integer out of whatever we've got.
2176 * It contains enough bits to make a random (signed) Emacs fixnum.
2177 * This suffices even for a 64-bit architecture with a 15-bit rand.
2184 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2185 val
= (random () ^ (val
<< RAND_BITS
)
2186 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2187 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2188 return val
& INTMASK
;
2191 #ifndef HAVE_SNPRINTF
2192 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2194 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2196 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2197 ptrdiff_t nbytes
= size
- 1;
2202 va_start (ap
, format
);
2203 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2207 if (nbytes
== size
- 1)
2209 /* Calculate the length of the string that would have been created
2210 had the buffer been large enough. */
2211 char stackbuf
[4000];
2213 ptrdiff_t bsize
= sizeof stackbuf
;
2214 va_start (ap
, format
);
2215 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2221 if (INT_MAX
< nbytes
)
2234 /* If a backtrace is available, output the top lines of it to stderr.
2235 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2236 This function may be called from a signal handler, so it should
2237 not invoke async-unsafe functions like malloc. */
2239 emacs_backtrace (int backtrace_limit
)
2241 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2242 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2246 if (thread_backtrace_npointers
)
2248 buffer
= thread_backtrace_buffer
;
2249 npointers
= thread_backtrace_npointers
;
2253 buffer
= main_backtrace_buffer
;
2254 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2259 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2260 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2261 if (bounded_limit
< npointers
)
2262 emacs_write (STDERR_FILENO
, "...\n", 4);
2270 terminate_due_to_signal (SIGABRT
, 40);
2274 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2275 Use binary I/O on systems that care about text vs binary I/O.
2276 Arrange for subprograms to not inherit the file descriptor.
2277 Prefer a method that is multithread-safe, if available.
2278 Do not fail merely because the open was interrupted by a signal.
2279 Allow the user to quit. */
2282 emacs_open (const char *file
, int oflags
, int mode
)
2285 if (! (oflags
& O_TEXT
))
2287 oflags
|= O_CLOEXEC
;
2288 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2290 if (! O_CLOEXEC
&& 0 <= fd
)
2291 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2295 /* Open FILE as a stream for Emacs use, with mode MODE.
2296 Act like emacs_open with respect to threads, signals, and quits. */
2299 emacs_fopen (char const *file
, char const *mode
)
2301 int fd
, omode
, oflags
;
2303 char const *m
= mode
;
2307 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2308 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2309 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2310 default: emacs_abort ();
2316 case '+': omode
= O_RDWR
; break;
2317 case 'b': bflag
= O_BINARY
; break;
2318 case 't': bflag
= O_TEXT
; break;
2319 default: /* Ignore. */ break;
2322 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2323 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2326 /* Create a pipe for Emacs use. */
2329 emacs_pipe (int fd
[2])
2334 int result
= pipe2 (fd
, O_BINARY
| O_CLOEXEC
);
2335 if (! O_CLOEXEC
&& result
== 0)
2337 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2338 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2344 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2345 For the background behind this mess, please see Austin Group defect 529
2346 <http://austingroupbugs.net/view.php?id=529>. */
2348 #ifndef POSIX_CLOSE_RESTART
2349 # define POSIX_CLOSE_RESTART 1
2351 posix_close (int fd
, int flag
)
2353 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2354 eassert (flag
== POSIX_CLOSE_RESTART
);
2356 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2357 on a system that does not define POSIX_CLOSE_RESTART.
2359 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2360 closed, and retrying the close could inadvertently close a file
2361 descriptor allocated by some other thread. In other systems
2362 (e.g., HP/UX) FD is not closed. And in still other systems
2363 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2364 multithreaded program there can be no way to tell.
2366 So, in this case, pretend that the close succeeded. This works
2367 well on systems like GNU/Linux that close FD. Although it may
2368 leak a file descriptor on other systems, the leak is unlikely and
2369 it's better to leak than to close a random victim. */
2370 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2374 /* Close FD, retrying if interrupted. If successful, return 0;
2375 otherwise, return -1 and set errno to a non-EINTR value. Consider
2376 an EINPROGRESS error to be successful, as that's merely a signal
2377 arriving. FD is always closed when this function returns, even
2380 Do not call this function if FD is nonnegative and might already be closed,
2381 as that might close an innocent victim opened by some other thread. */
2384 emacs_close (int fd
)
2388 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2391 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2393 eassert (errno
!= EBADF
|| fd
< 0);
2394 return errno
== EINPROGRESS
? 0 : r
;
2399 /* Maximum number of bytes to read or write in a single system call.
2400 This works around a serious bug in Linux kernels before 2.6.16; see
2401 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2402 It's likely to work around similar bugs in other operating systems, so do it
2403 on all platforms. Round INT_MAX down to a page size, with the conservative
2404 assumption that page sizes are at most 2**18 bytes (any kernel with a
2405 page size larger than that shouldn't have the bug). */
2406 #ifndef MAX_RW_COUNT
2407 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2410 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2411 Return the number of bytes read, which might be less than NBYTE.
2412 On error, set errno and return -1. */
2414 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2418 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2419 passes a size that large to emacs_read. */
2421 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2422 && (errno
== EINTR
))
2427 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2428 or if a partial write occurs. If interrupted, process pending
2429 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2430 errno if this is less than NBYTE. */
2432 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2433 bool process_signals
)
2435 ptrdiff_t bytes_written
= 0;
2439 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2445 /* I originally used `QUIT' but that might causes files to
2446 be truncated if you hit C-g in the middle of it. --Stef */
2447 if (process_signals
&& pending_signals
)
2448 process_pending_signals ();
2460 return bytes_written
;
2463 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2464 interrupted or if a partial write occurs. Return the number of
2465 bytes written, setting errno if this is less than NBYTE. */
2467 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2469 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2472 /* Like emacs_write, but also process pending signals if interrupted. */
2474 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2476 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2479 /* Write a diagnostic to standard error that contains MESSAGE and a
2480 string derived from errno. Preserve errno. Do not buffer stderr.
2481 Do not process pending signals if interrupted. */
2483 emacs_perror (char const *message
)
2486 char const *error_string
= strerror (err
);
2487 char const *command
= (initial_argv
&& initial_argv
[0]
2488 ? initial_argv
[0] : "emacs");
2489 /* Write it out all at once, if it's short; this is less likely to
2490 be interleaved with other output. */
2492 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2493 command
, message
, error_string
);
2494 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2495 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2498 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2499 emacs_write (STDERR_FILENO
, ": ", 2);
2500 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2501 emacs_write (STDERR_FILENO
, ": ", 2);
2502 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2503 emacs_write (STDERR_FILENO
, "\n", 1);
2508 /* Return a struct timeval that is roughly equivalent to T.
2509 Use the least timeval not less than T.
2510 Return an extremal value if the result would overflow. */
2512 make_timeval (struct timespec t
)
2515 tv
.tv_sec
= t
.tv_sec
;
2516 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2518 if (t
.tv_nsec
% 1000 != 0)
2520 if (tv
.tv_usec
< 999999)
2522 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2532 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2533 ATIME and MTIME, respectively.
2534 FD must be either negative -- in which case it is ignored --
2535 or a file descriptor that is open on FILE.
2536 If FD is nonnegative, then FILE can be NULL. */
2538 set_file_times (int fd
, const char *filename
,
2539 struct timespec atime
, struct timespec mtime
)
2541 struct timespec timespec
[2];
2542 timespec
[0] = atime
;
2543 timespec
[1] = mtime
;
2544 return fdutimens (fd
, filename
, timespec
);
2547 /* Like strsignal, except async-signal-safe, and this function typically
2548 returns a string in the C locale rather than the current locale. */
2550 safe_strsignal (int code
)
2552 char const *signame
= 0;
2554 if (0 <= code
&& code
< sys_siglist_entries
)
2555 signame
= sys_siglist
[code
];
2557 signame
= "Unknown signal";
2563 /* For make-serial-process */
2565 serial_open (Lisp_Object port
)
2567 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2569 report_file_error ("Opening serial port", port
);
2571 ioctl (fd
, TIOCEXCL
, (char *) 0);
2577 #if !defined (HAVE_CFMAKERAW)
2578 /* Workaround for targets which are missing cfmakeraw. */
2579 /* Pasted from man page. */
2581 cfmakeraw (struct termios
*termios_p
)
2583 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2584 termios_p
->c_oflag
&= ~OPOST
;
2585 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2586 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2587 termios_p
->c_cflag
|= CS8
;
2589 #endif /* !defined (HAVE_CFMAKERAW */
2591 #if !defined (HAVE_CFSETSPEED)
2592 /* Workaround for targets which are missing cfsetspeed. */
2594 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2596 return (cfsetispeed (termios_p
, vitesse
)
2597 + cfsetospeed (termios_p
, vitesse
));
2601 /* For serial-process-configure */
2603 serial_configure (struct Lisp_Process
*p
,
2604 Lisp_Object contact
)
2606 Lisp_Object childp2
= Qnil
;
2607 Lisp_Object tem
= Qnil
;
2608 struct termios attr
;
2610 char summary
[4] = "???"; /* This usually becomes "8N1". */
2612 childp2
= Fcopy_sequence (p
->childp
);
2614 /* Read port attributes and prepare default configuration. */
2615 err
= tcgetattr (p
->outfd
, &attr
);
2617 report_file_error ("Failed tcgetattr", Qnil
);
2619 #if defined (CLOCAL)
2620 attr
.c_cflag
|= CLOCAL
;
2623 attr
.c_cflag
|= CREAD
;
2626 /* Configure speed. */
2627 if (!NILP (Fplist_member (contact
, QCspeed
)))
2628 tem
= Fplist_get (contact
, QCspeed
);
2630 tem
= Fplist_get (p
->childp
, QCspeed
);
2632 err
= cfsetspeed (&attr
, XINT (tem
));
2634 report_file_error ("Failed cfsetspeed", tem
);
2635 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2637 /* Configure bytesize. */
2638 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2639 tem
= Fplist_get (contact
, QCbytesize
);
2641 tem
= Fplist_get (p
->childp
, QCbytesize
);
2643 tem
= make_number (8);
2645 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2646 error (":bytesize must be nil (8), 7, or 8");
2647 summary
[0] = XINT (tem
) + '0';
2648 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2649 attr
.c_cflag
&= ~CSIZE
;
2650 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2652 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2653 if (XINT (tem
) != 8)
2654 error ("Bytesize cannot be changed");
2656 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2658 /* Configure parity. */
2659 if (!NILP (Fplist_member (contact
, QCparity
)))
2660 tem
= Fplist_get (contact
, QCparity
);
2662 tem
= Fplist_get (p
->childp
, QCparity
);
2663 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2664 error (":parity must be nil (no parity), `even', or `odd'");
2665 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2666 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2667 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2672 else if (EQ (tem
, Qeven
))
2675 attr
.c_cflag
|= PARENB
;
2676 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2678 else if (EQ (tem
, Qodd
))
2681 attr
.c_cflag
|= (PARENB
| PARODD
);
2682 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2685 /* Don't error on no parity, which should be set by cfmakeraw. */
2687 error ("Parity cannot be configured");
2689 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2691 /* Configure stopbits. */
2692 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2693 tem
= Fplist_get (contact
, QCstopbits
);
2695 tem
= Fplist_get (p
->childp
, QCstopbits
);
2697 tem
= make_number (1);
2699 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2700 error (":stopbits must be nil (1 stopbit), 1, or 2");
2701 summary
[2] = XINT (tem
) + '0';
2702 #if defined (CSTOPB)
2703 attr
.c_cflag
&= ~CSTOPB
;
2704 if (XINT (tem
) == 2)
2705 attr
.c_cflag
|= CSTOPB
;
2707 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2708 if (XINT (tem
) != 1)
2709 error ("Stopbits cannot be configured");
2711 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2713 /* Configure flowcontrol. */
2714 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2715 tem
= Fplist_get (contact
, QCflowcontrol
);
2717 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2718 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2719 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2720 #if defined (CRTSCTS)
2721 attr
.c_cflag
&= ~CRTSCTS
;
2723 #if defined (CNEW_RTSCTS)
2724 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2726 #if defined (IXON) && defined (IXOFF)
2727 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2731 /* Already configured. */
2733 else if (EQ (tem
, Qhw
))
2735 #if defined (CRTSCTS)
2736 attr
.c_cflag
|= CRTSCTS
;
2737 #elif defined (CNEW_RTSCTS)
2738 attr
.c_cflag
|= CNEW_RTSCTS
;
2740 error ("Hardware flowcontrol (RTS/CTS) not supported");
2743 else if (EQ (tem
, Qsw
))
2745 #if defined (IXON) && defined (IXOFF)
2746 attr
.c_iflag
|= (IXON
| IXOFF
);
2748 error ("Software flowcontrol (XON/XOFF) not supported");
2751 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2753 /* Activate configuration. */
2754 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2756 report_file_error ("Failed tcsetattr", Qnil
);
2758 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2759 pset_childp (p
, childp2
);
2761 #endif /* not DOS_NT */
2763 /* System depended enumeration of and access to system processes a-la ps(1). */
2767 /* Process enumeration and access via /proc. */
2770 list_system_processes (void)
2772 Lisp_Object procdir
, match
, proclist
, next
;
2773 struct gcpro gcpro1
, gcpro2
;
2774 register Lisp_Object tail
;
2776 GCPRO2 (procdir
, match
);
2777 /* For every process on the system, there's a directory in the
2778 "/proc" pseudo-directory whose name is the numeric ID of that
2780 procdir
= build_string ("/proc");
2781 match
= build_string ("[0-9]+");
2782 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2784 /* `proclist' gives process IDs as strings. Destructively convert
2785 each string into a number. */
2786 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2789 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2793 /* directory_files_internal returns the files in reverse order; undo
2795 proclist
= Fnreverse (proclist
);
2799 #elif defined DARWIN_OS || defined __FreeBSD__
2802 list_system_processes (void)
2805 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2807 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2810 struct kinfo_proc
*procs
;
2813 struct gcpro gcpro1
;
2814 Lisp_Object proclist
= Qnil
;
2816 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2819 procs
= xmalloc (len
);
2820 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2827 len
/= sizeof (struct kinfo_proc
);
2828 for (i
= 0; i
< len
; i
++)
2831 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2833 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2843 /* The WINDOWSNT implementation is in w32.c.
2844 The MSDOS implementation is in dosfns.c. */
2845 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2848 list_system_processes (void)
2853 #endif /* !defined (WINDOWSNT) */
2855 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2856 static struct timespec
2857 time_from_jiffies (unsigned long long tval
, long hz
)
2859 unsigned long long s
= tval
/ hz
;
2860 unsigned long long frac
= tval
% hz
;
2863 if (TYPE_MAXIMUM (time_t) < s
)
2865 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2866 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2867 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2870 /* This is reachable only in the unlikely case that HZ * HZ
2871 exceeds ULLONG_MAX. It calculates an approximation that is
2872 guaranteed to be in range. */
2873 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2874 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2875 ns
= frac
/ hz_per_ns
;
2878 return make_timespec (s
, ns
);
2882 ltime_from_jiffies (unsigned long long tval
, long hz
)
2884 struct timespec t
= time_from_jiffies (tval
, hz
);
2885 return make_lisp_time (t
);
2888 static struct timespec
2892 struct timespec up
= make_timespec (0, 0);
2895 fup
= emacs_fopen ("/proc/uptime", "r");
2899 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2900 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2902 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2903 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2904 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2907 if (TYPE_MAXIMUM (time_t) < upsec
)
2909 upsec
= TYPE_MAXIMUM (time_t);
2910 upfrac
= TIMESPEC_RESOLUTION
- 1;
2914 int upfraclen
= upfrac_end
- upfrac_start
;
2915 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2917 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2919 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2921 up
= make_timespec (upsec
, upfrac
);
2930 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2931 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2934 procfs_ttyname (int rdev
)
2937 char name
[PATH_MAX
];
2940 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2946 unsigned long minor_beg
, minor_end
;
2947 char minor
[25]; /* 2 32-bit numbers + dash */
2950 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2952 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2953 && major
== MAJOR (rdev
))
2955 minor_beg
= strtoul (minor
, &endp
, 0);
2957 minor_end
= minor_beg
;
2958 else if (*endp
== '-')
2959 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2963 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2965 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2973 return build_string (name
);
2977 procfs_get_total_memory (void)
2980 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2984 fmem
= emacs_fopen ("/proc/meminfo", "r");
2988 uintmax_t entry_value
;
2992 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
2995 retval
= entry_value
;
3000 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
3018 system_process_attributes (Lisp_Object pid
)
3020 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3024 long clocks_per_sec
;
3026 char procbuf
[1025], *p
, *q
;
3029 static char const default_cmd
[] = "???";
3030 const char *cmd
= default_cmd
;
3031 int cmdsize
= sizeof default_cmd
- 1;
3032 char *cmdline
= NULL
;
3033 ptrdiff_t cmdline_size
;
3036 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
3039 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
3040 long priority
, niceness
, rss
;
3041 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
3042 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
3044 Lisp_Object attrs
= Qnil
;
3045 Lisp_Object cmd_str
, decoded_cmd
;
3047 struct gcpro gcpro1
, gcpro2
;
3049 CHECK_NUMBER_OR_FLOAT (pid
);
3050 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3051 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3052 if (stat (procfn
, &st
) < 0)
3055 GCPRO2 (attrs
, decoded_cmd
);
3059 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3061 pw
= getpwuid (uid
);
3064 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3067 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3069 gr
= getgrgid (gid
);
3072 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3074 count
= SPECPDL_INDEX ();
3075 strcpy (fn
, procfn
);
3076 procfn_end
= fn
+ strlen (fn
);
3077 strcpy (procfn_end
, "/stat");
3078 fd
= emacs_open (fn
, O_RDONLY
, 0);
3083 record_unwind_protect_int (close_file_unwind
, fd
);
3084 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
3088 procbuf
[nread
] = '\0';
3091 p
= strchr (p
, '(');
3094 q
= strrchr (p
+ 1, ')');
3104 /* Command name is encoded in locale-coding-system; decode it. */
3105 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
3106 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3107 Vlocale_coding_system
, 0);
3108 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3110 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
3111 utime stime cutime cstime priority nice thcount . start vsize rss */
3113 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
3114 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
3115 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
3116 &minflt
, &cminflt
, &majflt
, &cmajflt
,
3117 &u_time
, &s_time
, &cutime
, &cstime
,
3118 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
3123 state_str
[1] = '\0';
3124 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3125 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
3126 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
3127 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
3128 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3129 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
3130 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3131 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3132 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3134 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3136 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3137 if (clocks_per_sec
< 0)
3138 clocks_per_sec
= 100;
3139 attrs
= Fcons (Fcons (Qutime
,
3140 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3142 attrs
= Fcons (Fcons (Qstime
,
3143 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3145 attrs
= Fcons (Fcons (Qtime
,
3146 ltime_from_jiffies (s_time
+ u_time
,
3149 attrs
= Fcons (Fcons (Qcutime
,
3150 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3152 attrs
= Fcons (Fcons (Qcstime
,
3153 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3155 attrs
= Fcons (Fcons (Qctime
,
3156 ltime_from_jiffies (cstime
+ cutime
,
3159 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3160 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3161 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3163 tnow
= current_timespec ();
3164 telapsed
= get_up_time ();
3165 tboot
= timespec_sub (tnow
, telapsed
);
3166 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3167 tstart
= timespec_add (tboot
, tstart
);
3168 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3169 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3171 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3172 telapsed
= timespec_sub (tnow
, tstart
);
3173 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3174 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3175 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3178 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3179 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3182 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3185 unbind_to (count
, Qnil
);
3188 strcpy (procfn_end
, "/cmdline");
3189 fd
= emacs_open (fn
, O_RDONLY
, 0);
3192 ptrdiff_t readsize
, nread_incr
;
3193 record_unwind_protect_int (close_file_unwind
, fd
);
3194 record_unwind_protect_nothing ();
3195 nread
= cmdline_size
= 0;
3199 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3200 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3202 /* Leave room even if every byte needs escaping below. */
3203 readsize
= (cmdline_size
>> 1) - nread
;
3205 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3206 nread
+= max (0, nread_incr
);
3208 while (nread_incr
== readsize
);
3212 /* We don't want trailing null characters. */
3213 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3216 /* Escape-quote whitespace and backslashes. */
3217 q
= cmdline
+ cmdline_size
;
3222 if (c_isspace (c
) || c
== '\\')
3226 nread
= cmdline
+ cmdline_size
- q
;
3231 nread
= cmdsize
+ 2;
3232 cmdline_size
= nread
+ 1;
3233 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3234 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3235 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3237 /* Command line is encoded in locale-coding-system; decode it. */
3238 cmd_str
= make_unibyte_string (q
, nread
);
3239 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3240 Vlocale_coding_system
, 0);
3241 unbind_to (count
, Qnil
);
3242 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3249 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3251 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3252 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3253 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3254 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3255 #undef _FILE_OFFSET_BITS
3257 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3262 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3263 #define _FILE_OFFSET_BITS 64
3264 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3266 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3269 system_process_attributes (Lisp_Object pid
)
3271 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3276 struct psinfo pinfo
;
3282 Lisp_Object attrs
= Qnil
;
3283 Lisp_Object decoded_cmd
;
3284 struct gcpro gcpro1
, gcpro2
;
3287 CHECK_NUMBER_OR_FLOAT (pid
);
3288 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3289 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3290 if (stat (procfn
, &st
) < 0)
3293 GCPRO2 (attrs
, decoded_cmd
);
3297 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3299 pw
= getpwuid (uid
);
3302 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3305 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3307 gr
= getgrgid (gid
);
3310 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3312 count
= SPECPDL_INDEX ();
3313 strcpy (fn
, procfn
);
3314 procfn_end
= fn
+ strlen (fn
);
3315 strcpy (procfn_end
, "/psinfo");
3316 fd
= emacs_open (fn
, O_RDONLY
, 0);
3321 record_unwind_protect (close_file_unwind
, fd
);
3322 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3325 if (nread
== sizeof pinfo
)
3327 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3328 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3329 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3333 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3334 state_str
[1] = '\0';
3335 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3338 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3339 need to get a string from it. */
3341 /* FIXME: missing: Qtpgid */
3353 Are they available? */
3355 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3356 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3357 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3358 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3359 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3362 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3363 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3365 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3368 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3369 range 0 .. 2**15, representing 0.0 .. 1.0. */
3370 attrs
= Fcons (Fcons (Qpcpu
,
3371 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3373 attrs
= Fcons (Fcons (Qpmem
,
3374 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3377 decoded_cmd
= (code_convert_string_norecord
3378 (build_unibyte_string (pinfo
.pr_fname
),
3379 Vlocale_coding_system
, 0));
3380 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3381 decoded_cmd
= (code_convert_string_norecord
3382 (build_unibyte_string (pinfo
.pr_psargs
),
3383 Vlocale_coding_system
, 0));
3384 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3386 unbind_to (count
, Qnil
);
3391 #elif defined __FreeBSD__
3393 static struct timespec
3394 timeval_to_timespec (struct timeval t
)
3396 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3400 make_lisp_timeval (struct timeval t
)
3402 return make_lisp_time (timeval_to_timespec (t
));
3406 system_process_attributes (Lisp_Object pid
)
3409 int pagesize
= getpagesize ();
3410 unsigned long npages
;
3416 char args
[MAXPATHLEN
];
3417 struct timespec t
, now
;
3419 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3420 struct kinfo_proc proc
;
3421 size_t proclen
= sizeof proc
;
3423 struct gcpro gcpro1
, gcpro2
;
3424 Lisp_Object attrs
= Qnil
;
3425 Lisp_Object decoded_comm
;
3427 CHECK_NUMBER_OR_FLOAT (pid
);
3428 CONS_TO_INTEGER (pid
, int, proc_id
);
3431 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3434 GCPRO2 (attrs
, decoded_comm
);
3436 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3439 pw
= getpwuid (proc
.ki_uid
);
3442 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3444 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3447 gr
= getgrgid (proc
.ki_svgid
);
3450 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3452 decoded_comm
= (code_convert_string_norecord
3453 (build_unibyte_string (proc
.ki_comm
),
3454 Vlocale_coding_system
, 0));
3456 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3458 char state
[2] = {'\0', '\0'};
3459 switch (proc
.ki_stat
)
3481 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3484 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3485 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3486 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3489 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3492 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3494 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3495 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3496 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3497 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3498 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3500 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3502 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3504 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3505 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3506 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3508 attrs
= Fcons (Fcons (Qcutime
,
3509 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3511 attrs
= Fcons (Fcons (Qcstime
,
3512 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3514 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3515 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3516 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3518 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3520 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3521 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3522 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3523 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3524 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3527 now
= current_timespec ();
3528 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3529 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3531 len
= sizeof fscale
;
3532 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3537 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3539 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3540 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3541 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3545 len
= sizeof npages
;
3546 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3548 double pmem
= (proc
.ki_flag
& P_INMEM
3549 ? 100.0 * proc
.ki_rssize
/ npages
3551 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3554 mib
[2] = KERN_PROC_ARGS
;
3556 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3559 for (i
= 0; i
< len
; i
++)
3561 if (! args
[i
] && i
< len
- 1)
3566 (code_convert_string_norecord
3567 (build_unibyte_string (args
),
3568 Vlocale_coding_system
, 0));
3570 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3577 /* The WINDOWSNT implementation is in w32.c.
3578 The MSDOS implementation is in dosfns.c. */
3579 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3582 system_process_attributes (Lisp_Object pid
)
3587 #endif /* !defined (WINDOWSNT) */
3589 /* Wide character string collation. */
3591 #ifdef __STDC_ISO_10646__
3594 # if defined HAVE_USELOCALE || defined HAVE_SETLOCALE
3595 # include <locale.h>
3597 # ifndef HAVE_SETLOCALE
3598 # define setlocale(category, locale) ((char *) 0)
3602 str_collate (Lisp_Object s1
, Lisp_Object s2
)
3604 ptrdiff_t res
, len
, i
, i_byte
;
3606 Lisp_Object lc_collate
;
3607 # ifdef HAVE_USELOCALE
3608 locale_t loc
= 0, oldloc
= 0;
3610 char *oldloc
= NULL
;
3615 /* Convert byte stream to code points. */
3616 len
= SCHARS (s1
); i
= i_byte
= 0;
3617 SAFE_NALLOCA (p1
, 1, len
+ 1);
3619 FETCH_STRING_CHAR_ADVANCE (*(p1
+i
-1), s1
, i
, i_byte
);
3622 len
= SCHARS (s2
); i
= i_byte
= 0;
3623 SAFE_NALLOCA (p2
, 1, len
+ 1);
3625 FETCH_STRING_CHAR_ADVANCE (*(p2
+i
-1), s2
, i
, i_byte
);
3628 /* Create a new locale object, and set it. */
3630 Fgetenv_internal (build_string ("LC_COLLATE"), Vprocess_environment
);
3632 if (STRINGP (lc_collate
))
3634 #ifdef HAVE_USELOCALE
3635 loc
= newlocale (LC_COLLATE_MASK
, SSDATA (lc_collate
), 0);
3637 oldloc
= uselocale (loc
);
3639 oldloc
= setlocale (LC_COLLATE
, NULL
);
3642 oldloc
= xstrdup (oldloc
);
3643 setlocale (LC_COLLATE
, SSDATA (lc_collate
));
3648 res
= wcscoll (p1
, p2
);
3650 #ifdef HAVE_USELOCALE
3651 /* Free the locale object, and reset. */
3657 /* Restore the original locale. */
3658 setlocale (LC_COLLATE
, oldloc
);
3662 /* Return result. */
3666 #endif /* __STDC_ISO_10646__ */
3670 str_collate (Lisp_Object s1
, Lisp_Object s2
)
3672 Lisp_Object lc_collate
=
3673 Fgetenv_internal (build_string ("LC_COLLATE"), Vprocess_environment
);
3674 char *loc
= STRINGP (lc_collate
) ? SSDATA (lc_collate
) : NULL
;
3676 return w32_compare_strings (SDATA (s1
), SDATA (s2
), loc
);
3678 #endif /* WINDOWSNT */