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 /* -1 if stack grows down as expected on most OS/ABI variants, 1 otherwise. */
1725 static int stack_direction
;
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_DANGER_ZONE
= 16 * 1024 };
1745 char *beg
, *end
, *addr
;
1748 end
= stack_bottom
+ stack_direction
* rlim
.rlim_cur
;
1750 addr
= beg
, beg
= end
, end
= addr
;
1751 addr
= (char *) siginfo
->si_addr
;
1752 /* If we're somewhere on stack and too close to
1753 one of its boundaries, most likely this is it. */
1754 if (beg
< addr
&& addr
< end
1755 && (addr
- beg
< STACK_DANGER_ZONE
1756 || end
- addr
< STACK_DANGER_ZONE
))
1757 siglongjmp (return_to_command_loop
, 1);
1761 /* Otherwise we can't do anything with this. */
1762 deliver_fatal_thread_signal (sig
);
1765 /* Return true if we have successfully set up SIGSEGV handler on alternate
1766 stack. Otherwise we just treat SIGSEGV among the rest of fatal signals. */
1771 struct sigaction sa
;
1774 stack_direction
= ((char *) &ss
< stack_bottom
) ? -1 : 1;
1776 ss
.ss_sp
= sigsegv_stack
;
1777 ss
.ss_size
= sizeof (sigsegv_stack
);
1779 if (sigaltstack (&ss
, NULL
) < 0)
1782 sigfillset (&sa
.sa_mask
);
1783 sa
.sa_sigaction
= handle_sigsegv
;
1784 sa
.sa_flags
= SA_SIGINFO
| SA_ONSTACK
| emacs_sigaction_flags ();
1785 return sigaction (SIGSEGV
, &sa
, NULL
) < 0 ? 0 : 1;
1788 #else /* not HAVE_STACK_OVERFLOW_HANDLING */
1796 #endif /* HAVE_STACK_OVERFLOW_HANDLING */
1799 deliver_arith_signal (int sig
)
1801 deliver_thread_signal (sig
, handle_arith_signal
);
1806 /* Handler for SIGDANGER. */
1808 handle_danger_signal (int sig
)
1810 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1812 /* It might be unsafe to call do_auto_save now. */
1813 force_auto_save_soon ();
1817 deliver_danger_signal (int sig
)
1819 deliver_process_signal (sig
, handle_danger_signal
);
1823 /* Treat SIG as a terminating signal, unless it is already ignored and
1824 we are in --batch mode. Among other things, this makes nohup work. */
1826 maybe_fatal_sig (int sig
)
1828 bool catch_sig
= !noninteractive
;
1831 struct sigaction old_action
;
1832 sigaction (sig
, 0, &old_action
);
1833 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1836 sigaction (sig
, &process_fatal_action
, 0);
1840 init_signals (bool dumping
)
1842 struct sigaction thread_fatal_action
;
1843 struct sigaction action
;
1845 sigemptyset (&empty_mask
);
1847 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1848 main_thread
= pthread_self ();
1851 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1854 sys_siglist
[SIGABRT
] = "Aborted";
1856 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1858 sys_siglist
[SIGALRM
] = "Alarm clock";
1860 sys_siglist
[SIGBUS
] = "Bus error";
1863 sys_siglist
[SIGCHLD
] = "Child status changed";
1866 sys_siglist
[SIGCONT
] = "Continued";
1869 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1872 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1875 sys_siglist
[SIGEMT
] = "Emulation trap";
1877 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1879 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1882 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1884 sys_siglist
[SIGHUP
] = "Hangup";
1885 sys_siglist
[SIGILL
] = "Illegal instruction";
1886 sys_siglist
[SIGINT
] = "Interrupt";
1888 sys_siglist
[SIGIO
] = "I/O possible";
1891 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1894 sys_siglist
[SIGIOT
] = "IOT trap";
1896 sys_siglist
[SIGKILL
] = "Killed";
1898 sys_siglist
[SIGLOST
] = "Resource lost";
1901 sys_siglist
[SIGLWP
] = "SIGLWP";
1904 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1907 sys_siglist
[SIGWIND
] = "SIGPHONE";
1909 sys_siglist
[SIGPIPE
] = "Broken pipe";
1911 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1914 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1917 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1920 sys_siglist
[SIGPWR
] = "Power-fail restart";
1922 sys_siglist
[SIGQUIT
] = "Quit";
1924 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1927 sys_siglist
[SIGSAK
] = "Secure attention";
1929 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1931 sys_siglist
[SIGSOUND
] = "Sound completed";
1934 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1937 sys_siglist
[SIGSTP
] = "Stopped (user)";
1940 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1942 sys_siglist
[SIGTERM
] = "Terminated";
1944 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1947 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1950 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1953 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1956 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1959 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1962 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1965 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1968 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1971 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1974 sys_siglist
[SIGWINCH
] = "Window size changed";
1977 sys_siglist
[SIGWIND
] = "SIGWIND";
1980 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1983 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1986 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1988 /* Don't alter signal handlers if dumping. On some machines,
1989 changing signal handlers sets static data that would make signals
1990 fail to work right when the dumped Emacs is run. */
1994 sigfillset (&process_fatal_action
.sa_mask
);
1995 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1996 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1998 sigfillset (&thread_fatal_action
.sa_mask
);
1999 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
2000 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
2002 /* SIGINT may need special treatment on MS-Windows. See
2003 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
2004 Please update the doc of kill-emacs, kill-emacs-hook, and
2005 NEWS if you change this. */
2007 maybe_fatal_sig (SIGHUP
);
2008 maybe_fatal_sig (SIGINT
);
2009 maybe_fatal_sig (SIGTERM
);
2011 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
2012 However, in batch mode leave SIGPIPE alone, as that causes Emacs
2013 to behave more like typical batch applications do. */
2014 if (! noninteractive
)
2015 signal (SIGPIPE
, SIG_IGN
);
2017 sigaction (SIGQUIT
, &process_fatal_action
, 0);
2018 sigaction (SIGILL
, &thread_fatal_action
, 0);
2019 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
2021 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
2022 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
2023 interpreter's floating point operations, so treat SIGFPE as an
2024 arith-error if it arises in the main thread. */
2025 if (IEEE_FLOATING_POINT
)
2026 sigaction (SIGFPE
, &thread_fatal_action
, 0);
2029 emacs_sigaction_init (&action
, deliver_arith_signal
);
2030 sigaction (SIGFPE
, &action
, 0);
2034 add_user_signal (SIGUSR1
, "sigusr1");
2037 add_user_signal (SIGUSR2
, "sigusr2");
2039 sigaction (SIGABRT
, &thread_fatal_action
, 0);
2041 sigaction (SIGPRE
, &thread_fatal_action
, 0);
2044 sigaction (SIGORE
, &thread_fatal_action
, 0);
2047 sigaction (SIGUME
, &thread_fatal_action
, 0);
2050 sigaction (SIGDLK
, &process_fatal_action
, 0);
2053 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
2056 sigaction (SIGIOT
, &thread_fatal_action
, 0);
2059 sigaction (SIGEMT
, &thread_fatal_action
, 0);
2062 sigaction (SIGBUS
, &thread_fatal_action
, 0);
2064 if (!init_sigsegv ())
2065 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
2067 sigaction (SIGSYS
, &thread_fatal_action
, 0);
2069 sigaction (SIGTERM
, &process_fatal_action
, 0);
2071 signal (SIGPROF
, SIG_IGN
);
2074 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
2077 sigaction (SIGXCPU
, &process_fatal_action
, 0);
2080 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
2084 /* This just means available memory is getting low. */
2085 emacs_sigaction_init (&action
, deliver_danger_signal
);
2086 sigaction (SIGDANGER
, &action
, 0);
2089 /* AIX-specific signals. */
2091 sigaction (SIGGRANT
, &process_fatal_action
, 0);
2094 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
2097 sigaction (SIGMSG
, &process_fatal_action
, 0);
2100 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
2103 sigaction (SIGSAK
, &process_fatal_action
, 0);
2106 sigaction (SIGSOUND
, &process_fatal_action
, 0);
2109 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
2119 /* Figure out how many bits the system's random number generator uses.
2120 `random' and `lrand48' are assumed to return 31 usable bits.
2121 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2122 so we'll shift it and treat it like the 15-bit USG `rand'. */
2126 # define RAND_BITS 31
2127 # else /* !HAVE_RANDOM */
2128 # ifdef HAVE_LRAND48
2129 # define RAND_BITS 31
2130 # define random lrand48
2131 # else /* !HAVE_LRAND48 */
2132 # define RAND_BITS 15
2133 # if RAND_MAX == 32767
2134 # define random rand
2135 # else /* RAND_MAX != 32767 */
2136 # if RAND_MAX == 2147483647
2137 # define random() (rand () >> 16)
2138 # else /* RAND_MAX != 2147483647 */
2140 # define random rand
2142 # define random() (rand () >> 16)
2144 # endif /* RAND_MAX != 2147483647 */
2145 # endif /* RAND_MAX != 32767 */
2146 # endif /* !HAVE_LRAND48 */
2147 # endif /* !HAVE_RANDOM */
2148 #endif /* !RAND_BITS */
2151 seed_random (void *seed
, ptrdiff_t seed_size
)
2153 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2154 unsigned int arg
= 0;
2158 unsigned char *argp
= (unsigned char *) &arg
;
2159 unsigned char *seedp
= seed
;
2161 for (i
= 0; i
< seed_size
; i
++)
2162 argp
[i
% sizeof arg
] ^= seedp
[i
];
2166 # ifdef HAVE_LRAND48
2177 struct timespec t
= current_timespec ();
2178 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2179 seed_random (&v
, sizeof v
);
2183 * Return a nonnegative random integer out of whatever we've got.
2184 * It contains enough bits to make a random (signed) Emacs fixnum.
2185 * This suffices even for a 64-bit architecture with a 15-bit rand.
2192 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2193 val
= (random () ^ (val
<< RAND_BITS
)
2194 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2195 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2196 return val
& INTMASK
;
2199 #ifndef HAVE_SNPRINTF
2200 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2202 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2204 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2205 ptrdiff_t nbytes
= size
- 1;
2210 va_start (ap
, format
);
2211 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2215 if (nbytes
== size
- 1)
2217 /* Calculate the length of the string that would have been created
2218 had the buffer been large enough. */
2219 char stackbuf
[4000];
2221 ptrdiff_t bsize
= sizeof stackbuf
;
2222 va_start (ap
, format
);
2223 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2229 if (INT_MAX
< nbytes
)
2242 /* If a backtrace is available, output the top lines of it to stderr.
2243 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2244 This function may be called from a signal handler, so it should
2245 not invoke async-unsafe functions like malloc. */
2247 emacs_backtrace (int backtrace_limit
)
2249 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2250 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2254 if (thread_backtrace_npointers
)
2256 buffer
= thread_backtrace_buffer
;
2257 npointers
= thread_backtrace_npointers
;
2261 buffer
= main_backtrace_buffer
;
2262 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2267 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2268 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2269 if (bounded_limit
< npointers
)
2270 emacs_write (STDERR_FILENO
, "...\n", 4);
2278 terminate_due_to_signal (SIGABRT
, 40);
2282 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2283 Use binary I/O on systems that care about text vs binary I/O.
2284 Arrange for subprograms to not inherit the file descriptor.
2285 Prefer a method that is multithread-safe, if available.
2286 Do not fail merely because the open was interrupted by a signal.
2287 Allow the user to quit. */
2290 emacs_open (const char *file
, int oflags
, int mode
)
2293 if (! (oflags
& O_TEXT
))
2295 oflags
|= O_CLOEXEC
;
2296 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2298 if (! O_CLOEXEC
&& 0 <= fd
)
2299 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2303 /* Open FILE as a stream for Emacs use, with mode MODE.
2304 Act like emacs_open with respect to threads, signals, and quits. */
2307 emacs_fopen (char const *file
, char const *mode
)
2309 int fd
, omode
, oflags
;
2311 char const *m
= mode
;
2315 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2316 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2317 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2318 default: emacs_abort ();
2324 case '+': omode
= O_RDWR
; break;
2325 case 'b': bflag
= O_BINARY
; break;
2326 case 't': bflag
= O_TEXT
; break;
2327 default: /* Ignore. */ break;
2330 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2331 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2334 /* Create a pipe for Emacs use. */
2337 emacs_pipe (int fd
[2])
2342 int result
= pipe2 (fd
, O_BINARY
| O_CLOEXEC
);
2343 if (! O_CLOEXEC
&& result
== 0)
2345 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2346 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2352 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2353 For the background behind this mess, please see Austin Group defect 529
2354 <http://austingroupbugs.net/view.php?id=529>. */
2356 #ifndef POSIX_CLOSE_RESTART
2357 # define POSIX_CLOSE_RESTART 1
2359 posix_close (int fd
, int flag
)
2361 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2362 eassert (flag
== POSIX_CLOSE_RESTART
);
2364 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2365 on a system that does not define POSIX_CLOSE_RESTART.
2367 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2368 closed, and retrying the close could inadvertently close a file
2369 descriptor allocated by some other thread. In other systems
2370 (e.g., HP/UX) FD is not closed. And in still other systems
2371 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2372 multithreaded program there can be no way to tell.
2374 So, in this case, pretend that the close succeeded. This works
2375 well on systems like GNU/Linux that close FD. Although it may
2376 leak a file descriptor on other systems, the leak is unlikely and
2377 it's better to leak than to close a random victim. */
2378 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2382 /* Close FD, retrying if interrupted. If successful, return 0;
2383 otherwise, return -1 and set errno to a non-EINTR value. Consider
2384 an EINPROGRESS error to be successful, as that's merely a signal
2385 arriving. FD is always closed when this function returns, even
2388 Do not call this function if FD is nonnegative and might already be closed,
2389 as that might close an innocent victim opened by some other thread. */
2392 emacs_close (int fd
)
2396 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2399 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2401 eassert (errno
!= EBADF
|| fd
< 0);
2402 return errno
== EINPROGRESS
? 0 : r
;
2407 /* Maximum number of bytes to read or write in a single system call.
2408 This works around a serious bug in Linux kernels before 2.6.16; see
2409 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2410 It's likely to work around similar bugs in other operating systems, so do it
2411 on all platforms. Round INT_MAX down to a page size, with the conservative
2412 assumption that page sizes are at most 2**18 bytes (any kernel with a
2413 page size larger than that shouldn't have the bug). */
2414 #ifndef MAX_RW_COUNT
2415 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2418 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2419 Return the number of bytes read, which might be less than NBYTE.
2420 On error, set errno and return -1. */
2422 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2426 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2427 passes a size that large to emacs_read. */
2429 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2430 && (errno
== EINTR
))
2435 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2436 or if a partial write occurs. If interrupted, process pending
2437 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2438 errno if this is less than NBYTE. */
2440 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2441 bool process_signals
)
2443 ptrdiff_t bytes_written
= 0;
2447 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2453 /* I originally used `QUIT' but that might causes files to
2454 be truncated if you hit C-g in the middle of it. --Stef */
2455 if (process_signals
&& pending_signals
)
2456 process_pending_signals ();
2468 return bytes_written
;
2471 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2472 interrupted or if a partial write occurs. Return the number of
2473 bytes written, setting errno if this is less than NBYTE. */
2475 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2477 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2480 /* Like emacs_write, but also process pending signals if interrupted. */
2482 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2484 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2487 /* Write a diagnostic to standard error that contains MESSAGE and a
2488 string derived from errno. Preserve errno. Do not buffer stderr.
2489 Do not process pending signals if interrupted. */
2491 emacs_perror (char const *message
)
2494 char const *error_string
= strerror (err
);
2495 char const *command
= (initial_argv
&& initial_argv
[0]
2496 ? initial_argv
[0] : "emacs");
2497 /* Write it out all at once, if it's short; this is less likely to
2498 be interleaved with other output. */
2500 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2501 command
, message
, error_string
);
2502 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2503 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2506 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2507 emacs_write (STDERR_FILENO
, ": ", 2);
2508 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2509 emacs_write (STDERR_FILENO
, ": ", 2);
2510 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2511 emacs_write (STDERR_FILENO
, "\n", 1);
2516 /* Return a struct timeval that is roughly equivalent to T.
2517 Use the least timeval not less than T.
2518 Return an extremal value if the result would overflow. */
2520 make_timeval (struct timespec t
)
2523 tv
.tv_sec
= t
.tv_sec
;
2524 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2526 if (t
.tv_nsec
% 1000 != 0)
2528 if (tv
.tv_usec
< 999999)
2530 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2540 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2541 ATIME and MTIME, respectively.
2542 FD must be either negative -- in which case it is ignored --
2543 or a file descriptor that is open on FILE.
2544 If FD is nonnegative, then FILE can be NULL. */
2546 set_file_times (int fd
, const char *filename
,
2547 struct timespec atime
, struct timespec mtime
)
2549 struct timespec timespec
[2];
2550 timespec
[0] = atime
;
2551 timespec
[1] = mtime
;
2552 return fdutimens (fd
, filename
, timespec
);
2555 /* Like strsignal, except async-signal-safe, and this function typically
2556 returns a string in the C locale rather than the current locale. */
2558 safe_strsignal (int code
)
2560 char const *signame
= 0;
2562 if (0 <= code
&& code
< sys_siglist_entries
)
2563 signame
= sys_siglist
[code
];
2565 signame
= "Unknown signal";
2571 /* For make-serial-process */
2573 serial_open (Lisp_Object port
)
2575 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2577 report_file_error ("Opening serial port", port
);
2579 ioctl (fd
, TIOCEXCL
, (char *) 0);
2585 #if !defined (HAVE_CFMAKERAW)
2586 /* Workaround for targets which are missing cfmakeraw. */
2587 /* Pasted from man page. */
2589 cfmakeraw (struct termios
*termios_p
)
2591 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2592 termios_p
->c_oflag
&= ~OPOST
;
2593 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2594 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2595 termios_p
->c_cflag
|= CS8
;
2597 #endif /* !defined (HAVE_CFMAKERAW */
2599 #if !defined (HAVE_CFSETSPEED)
2600 /* Workaround for targets which are missing cfsetspeed. */
2602 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2604 return (cfsetispeed (termios_p
, vitesse
)
2605 + cfsetospeed (termios_p
, vitesse
));
2609 /* For serial-process-configure */
2611 serial_configure (struct Lisp_Process
*p
,
2612 Lisp_Object contact
)
2614 Lisp_Object childp2
= Qnil
;
2615 Lisp_Object tem
= Qnil
;
2616 struct termios attr
;
2618 char summary
[4] = "???"; /* This usually becomes "8N1". */
2620 childp2
= Fcopy_sequence (p
->childp
);
2622 /* Read port attributes and prepare default configuration. */
2623 err
= tcgetattr (p
->outfd
, &attr
);
2625 report_file_error ("Failed tcgetattr", Qnil
);
2627 #if defined (CLOCAL)
2628 attr
.c_cflag
|= CLOCAL
;
2631 attr
.c_cflag
|= CREAD
;
2634 /* Configure speed. */
2635 if (!NILP (Fplist_member (contact
, QCspeed
)))
2636 tem
= Fplist_get (contact
, QCspeed
);
2638 tem
= Fplist_get (p
->childp
, QCspeed
);
2640 err
= cfsetspeed (&attr
, XINT (tem
));
2642 report_file_error ("Failed cfsetspeed", tem
);
2643 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2645 /* Configure bytesize. */
2646 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2647 tem
= Fplist_get (contact
, QCbytesize
);
2649 tem
= Fplist_get (p
->childp
, QCbytesize
);
2651 tem
= make_number (8);
2653 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2654 error (":bytesize must be nil (8), 7, or 8");
2655 summary
[0] = XINT (tem
) + '0';
2656 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2657 attr
.c_cflag
&= ~CSIZE
;
2658 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2660 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2661 if (XINT (tem
) != 8)
2662 error ("Bytesize cannot be changed");
2664 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2666 /* Configure parity. */
2667 if (!NILP (Fplist_member (contact
, QCparity
)))
2668 tem
= Fplist_get (contact
, QCparity
);
2670 tem
= Fplist_get (p
->childp
, QCparity
);
2671 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2672 error (":parity must be nil (no parity), `even', or `odd'");
2673 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2674 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2675 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2680 else if (EQ (tem
, Qeven
))
2683 attr
.c_cflag
|= PARENB
;
2684 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2686 else if (EQ (tem
, Qodd
))
2689 attr
.c_cflag
|= (PARENB
| PARODD
);
2690 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2693 /* Don't error on no parity, which should be set by cfmakeraw. */
2695 error ("Parity cannot be configured");
2697 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2699 /* Configure stopbits. */
2700 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2701 tem
= Fplist_get (contact
, QCstopbits
);
2703 tem
= Fplist_get (p
->childp
, QCstopbits
);
2705 tem
= make_number (1);
2707 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2708 error (":stopbits must be nil (1 stopbit), 1, or 2");
2709 summary
[2] = XINT (tem
) + '0';
2710 #if defined (CSTOPB)
2711 attr
.c_cflag
&= ~CSTOPB
;
2712 if (XINT (tem
) == 2)
2713 attr
.c_cflag
|= CSTOPB
;
2715 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2716 if (XINT (tem
) != 1)
2717 error ("Stopbits cannot be configured");
2719 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2721 /* Configure flowcontrol. */
2722 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2723 tem
= Fplist_get (contact
, QCflowcontrol
);
2725 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2726 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2727 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2728 #if defined (CRTSCTS)
2729 attr
.c_cflag
&= ~CRTSCTS
;
2731 #if defined (CNEW_RTSCTS)
2732 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2734 #if defined (IXON) && defined (IXOFF)
2735 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2739 /* Already configured. */
2741 else if (EQ (tem
, Qhw
))
2743 #if defined (CRTSCTS)
2744 attr
.c_cflag
|= CRTSCTS
;
2745 #elif defined (CNEW_RTSCTS)
2746 attr
.c_cflag
|= CNEW_RTSCTS
;
2748 error ("Hardware flowcontrol (RTS/CTS) not supported");
2751 else if (EQ (tem
, Qsw
))
2753 #if defined (IXON) && defined (IXOFF)
2754 attr
.c_iflag
|= (IXON
| IXOFF
);
2756 error ("Software flowcontrol (XON/XOFF) not supported");
2759 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2761 /* Activate configuration. */
2762 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2764 report_file_error ("Failed tcsetattr", Qnil
);
2766 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2767 pset_childp (p
, childp2
);
2769 #endif /* not DOS_NT */
2771 /* System depended enumeration of and access to system processes a-la ps(1). */
2775 /* Process enumeration and access via /proc. */
2778 list_system_processes (void)
2780 Lisp_Object procdir
, match
, proclist
, next
;
2781 struct gcpro gcpro1
, gcpro2
;
2782 register Lisp_Object tail
;
2784 GCPRO2 (procdir
, match
);
2785 /* For every process on the system, there's a directory in the
2786 "/proc" pseudo-directory whose name is the numeric ID of that
2788 procdir
= build_string ("/proc");
2789 match
= build_string ("[0-9]+");
2790 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2792 /* `proclist' gives process IDs as strings. Destructively convert
2793 each string into a number. */
2794 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2797 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2801 /* directory_files_internal returns the files in reverse order; undo
2803 proclist
= Fnreverse (proclist
);
2807 #elif defined DARWIN_OS || defined __FreeBSD__
2810 list_system_processes (void)
2813 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2815 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2818 struct kinfo_proc
*procs
;
2821 struct gcpro gcpro1
;
2822 Lisp_Object proclist
= Qnil
;
2824 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2827 procs
= xmalloc (len
);
2828 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2835 len
/= sizeof (struct kinfo_proc
);
2836 for (i
= 0; i
< len
; i
++)
2839 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2841 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2851 /* The WINDOWSNT implementation is in w32.c.
2852 The MSDOS implementation is in dosfns.c. */
2853 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2856 list_system_processes (void)
2861 #endif /* !defined (WINDOWSNT) */
2863 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2864 static struct timespec
2865 time_from_jiffies (unsigned long long tval
, long hz
)
2867 unsigned long long s
= tval
/ hz
;
2868 unsigned long long frac
= tval
% hz
;
2871 if (TYPE_MAXIMUM (time_t) < s
)
2873 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2874 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2875 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2878 /* This is reachable only in the unlikely case that HZ * HZ
2879 exceeds ULLONG_MAX. It calculates an approximation that is
2880 guaranteed to be in range. */
2881 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2882 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2883 ns
= frac
/ hz_per_ns
;
2886 return make_timespec (s
, ns
);
2890 ltime_from_jiffies (unsigned long long tval
, long hz
)
2892 struct timespec t
= time_from_jiffies (tval
, hz
);
2893 return make_lisp_time (t
);
2896 static struct timespec
2900 struct timespec up
= make_timespec (0, 0);
2903 fup
= emacs_fopen ("/proc/uptime", "r");
2907 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2908 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2910 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2911 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2912 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2915 if (TYPE_MAXIMUM (time_t) < upsec
)
2917 upsec
= TYPE_MAXIMUM (time_t);
2918 upfrac
= TIMESPEC_RESOLUTION
- 1;
2922 int upfraclen
= upfrac_end
- upfrac_start
;
2923 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2925 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2927 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2929 up
= make_timespec (upsec
, upfrac
);
2938 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2939 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2942 procfs_ttyname (int rdev
)
2945 char name
[PATH_MAX
];
2948 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2954 unsigned long minor_beg
, minor_end
;
2955 char minor
[25]; /* 2 32-bit numbers + dash */
2958 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2960 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2961 && major
== MAJOR (rdev
))
2963 minor_beg
= strtoul (minor
, &endp
, 0);
2965 minor_end
= minor_beg
;
2966 else if (*endp
== '-')
2967 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2971 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2973 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2981 return build_string (name
);
2985 procfs_get_total_memory (void)
2988 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2992 fmem
= emacs_fopen ("/proc/meminfo", "r");
2996 uintmax_t entry_value
;
3000 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
3003 retval
= entry_value
;
3008 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
3026 system_process_attributes (Lisp_Object pid
)
3028 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3032 long clocks_per_sec
;
3034 char procbuf
[1025], *p
, *q
;
3037 static char const default_cmd
[] = "???";
3038 const char *cmd
= default_cmd
;
3039 int cmdsize
= sizeof default_cmd
- 1;
3040 char *cmdline
= NULL
;
3041 ptrdiff_t cmdline_size
;
3044 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
3047 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
3048 long priority
, niceness
, rss
;
3049 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
3050 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
3052 Lisp_Object attrs
= Qnil
;
3053 Lisp_Object cmd_str
, decoded_cmd
;
3055 struct gcpro gcpro1
, gcpro2
;
3057 CHECK_NUMBER_OR_FLOAT (pid
);
3058 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3059 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3060 if (stat (procfn
, &st
) < 0)
3063 GCPRO2 (attrs
, decoded_cmd
);
3067 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3069 pw
= getpwuid (uid
);
3072 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3075 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3077 gr
= getgrgid (gid
);
3080 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3082 count
= SPECPDL_INDEX ();
3083 strcpy (fn
, procfn
);
3084 procfn_end
= fn
+ strlen (fn
);
3085 strcpy (procfn_end
, "/stat");
3086 fd
= emacs_open (fn
, O_RDONLY
, 0);
3091 record_unwind_protect_int (close_file_unwind
, fd
);
3092 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
3096 procbuf
[nread
] = '\0';
3099 p
= strchr (p
, '(');
3102 q
= strrchr (p
+ 1, ')');
3112 /* Command name is encoded in locale-coding-system; decode it. */
3113 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
3114 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3115 Vlocale_coding_system
, 0);
3116 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3118 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
3119 utime stime cutime cstime priority nice thcount . start vsize rss */
3121 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
3122 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
3123 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
3124 &minflt
, &cminflt
, &majflt
, &cmajflt
,
3125 &u_time
, &s_time
, &cutime
, &cstime
,
3126 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
3131 state_str
[1] = '\0';
3132 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3133 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
3134 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
3135 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
3136 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3137 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
3138 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3139 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3140 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3142 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3144 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3145 if (clocks_per_sec
< 0)
3146 clocks_per_sec
= 100;
3147 attrs
= Fcons (Fcons (Qutime
,
3148 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3150 attrs
= Fcons (Fcons (Qstime
,
3151 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3153 attrs
= Fcons (Fcons (Qtime
,
3154 ltime_from_jiffies (s_time
+ u_time
,
3157 attrs
= Fcons (Fcons (Qcutime
,
3158 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3160 attrs
= Fcons (Fcons (Qcstime
,
3161 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3163 attrs
= Fcons (Fcons (Qctime
,
3164 ltime_from_jiffies (cstime
+ cutime
,
3167 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3168 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3169 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3171 tnow
= current_timespec ();
3172 telapsed
= get_up_time ();
3173 tboot
= timespec_sub (tnow
, telapsed
);
3174 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3175 tstart
= timespec_add (tboot
, tstart
);
3176 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3177 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3179 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3180 telapsed
= timespec_sub (tnow
, tstart
);
3181 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3182 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3183 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3186 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3187 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3190 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3193 unbind_to (count
, Qnil
);
3196 strcpy (procfn_end
, "/cmdline");
3197 fd
= emacs_open (fn
, O_RDONLY
, 0);
3200 ptrdiff_t readsize
, nread_incr
;
3201 record_unwind_protect_int (close_file_unwind
, fd
);
3202 record_unwind_protect_nothing ();
3203 nread
= cmdline_size
= 0;
3207 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3208 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3210 /* Leave room even if every byte needs escaping below. */
3211 readsize
= (cmdline_size
>> 1) - nread
;
3213 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3214 nread
+= max (0, nread_incr
);
3216 while (nread_incr
== readsize
);
3220 /* We don't want trailing null characters. */
3221 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3224 /* Escape-quote whitespace and backslashes. */
3225 q
= cmdline
+ cmdline_size
;
3230 if (c_isspace (c
) || c
== '\\')
3234 nread
= cmdline
+ cmdline_size
- q
;
3239 nread
= cmdsize
+ 2;
3240 cmdline_size
= nread
+ 1;
3241 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3242 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3243 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3245 /* Command line is encoded in locale-coding-system; decode it. */
3246 cmd_str
= make_unibyte_string (q
, nread
);
3247 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3248 Vlocale_coding_system
, 0);
3249 unbind_to (count
, Qnil
);
3250 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3257 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3259 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3260 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3261 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3262 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3263 #undef _FILE_OFFSET_BITS
3265 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3270 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3271 #define _FILE_OFFSET_BITS 64
3272 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3274 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3277 system_process_attributes (Lisp_Object pid
)
3279 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3284 struct psinfo pinfo
;
3290 Lisp_Object attrs
= Qnil
;
3291 Lisp_Object decoded_cmd
;
3292 struct gcpro gcpro1
, gcpro2
;
3295 CHECK_NUMBER_OR_FLOAT (pid
);
3296 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3297 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3298 if (stat (procfn
, &st
) < 0)
3301 GCPRO2 (attrs
, decoded_cmd
);
3305 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3307 pw
= getpwuid (uid
);
3310 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3313 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3315 gr
= getgrgid (gid
);
3318 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3320 count
= SPECPDL_INDEX ();
3321 strcpy (fn
, procfn
);
3322 procfn_end
= fn
+ strlen (fn
);
3323 strcpy (procfn_end
, "/psinfo");
3324 fd
= emacs_open (fn
, O_RDONLY
, 0);
3329 record_unwind_protect (close_file_unwind
, fd
);
3330 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3333 if (nread
== sizeof pinfo
)
3335 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3336 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3337 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3341 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3342 state_str
[1] = '\0';
3343 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3346 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3347 need to get a string from it. */
3349 /* FIXME: missing: Qtpgid */
3361 Are they available? */
3363 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3364 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3365 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3366 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3367 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3370 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3371 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3373 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3376 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3377 range 0 .. 2**15, representing 0.0 .. 1.0. */
3378 attrs
= Fcons (Fcons (Qpcpu
,
3379 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3381 attrs
= Fcons (Fcons (Qpmem
,
3382 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3385 decoded_cmd
= (code_convert_string_norecord
3386 (build_unibyte_string (pinfo
.pr_fname
),
3387 Vlocale_coding_system
, 0));
3388 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3389 decoded_cmd
= (code_convert_string_norecord
3390 (build_unibyte_string (pinfo
.pr_psargs
),
3391 Vlocale_coding_system
, 0));
3392 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3394 unbind_to (count
, Qnil
);
3399 #elif defined __FreeBSD__
3401 static struct timespec
3402 timeval_to_timespec (struct timeval t
)
3404 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3408 make_lisp_timeval (struct timeval t
)
3410 return make_lisp_time (timeval_to_timespec (t
));
3414 system_process_attributes (Lisp_Object pid
)
3417 int pagesize
= getpagesize ();
3418 unsigned long npages
;
3424 char args
[MAXPATHLEN
];
3425 struct timespec t
, now
;
3427 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3428 struct kinfo_proc proc
;
3429 size_t proclen
= sizeof proc
;
3431 struct gcpro gcpro1
, gcpro2
;
3432 Lisp_Object attrs
= Qnil
;
3433 Lisp_Object decoded_comm
;
3435 CHECK_NUMBER_OR_FLOAT (pid
);
3436 CONS_TO_INTEGER (pid
, int, proc_id
);
3439 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3442 GCPRO2 (attrs
, decoded_comm
);
3444 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3447 pw
= getpwuid (proc
.ki_uid
);
3450 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3452 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3455 gr
= getgrgid (proc
.ki_svgid
);
3458 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3460 decoded_comm
= (code_convert_string_norecord
3461 (build_unibyte_string (proc
.ki_comm
),
3462 Vlocale_coding_system
, 0));
3464 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3466 char state
[2] = {'\0', '\0'};
3467 switch (proc
.ki_stat
)
3489 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3492 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3493 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3494 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3497 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3500 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3502 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3503 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3504 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3505 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3506 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3508 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3510 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3512 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3513 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3514 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3516 attrs
= Fcons (Fcons (Qcutime
,
3517 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3519 attrs
= Fcons (Fcons (Qcstime
,
3520 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3522 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3523 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3524 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3526 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3528 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3529 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3530 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3531 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3532 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3535 now
= current_timespec ();
3536 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3537 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3539 len
= sizeof fscale
;
3540 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3545 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3547 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3548 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3549 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3553 len
= sizeof npages
;
3554 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3556 double pmem
= (proc
.ki_flag
& P_INMEM
3557 ? 100.0 * proc
.ki_rssize
/ npages
3559 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3562 mib
[2] = KERN_PROC_ARGS
;
3564 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3567 for (i
= 0; i
< len
; i
++)
3569 if (! args
[i
] && i
< len
- 1)
3574 (code_convert_string_norecord
3575 (build_unibyte_string (args
),
3576 Vlocale_coding_system
, 0));
3578 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3585 /* The WINDOWSNT implementation is in w32.c.
3586 The MSDOS implementation is in dosfns.c. */
3587 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3590 system_process_attributes (Lisp_Object pid
)
3595 #endif /* !defined (WINDOWSNT) */
3597 /* Wide character string collation. */
3599 #ifdef __STDC_ISO_10646__
3602 # if defined HAVE_NEWLOCALE || defined HAVE_SETLOCALE
3603 # include <locale.h>
3606 # define LC_COLLATE 0
3608 # ifndef LC_COLLATE_MASK
3609 # define LC_COLLATE_MASK 0
3611 # ifndef HAVE_NEWLOCALE
3616 # define freelocale emacs_freelocale
3617 # define locale_t emacs_locale_t
3618 # define newlocale emacs_newlocale
3619 # define wcscoll_l emacs_wcscoll_l
3621 typedef char const *locale_t
;
3624 newlocale (int category_mask
, char const *locale
, locale_t loc
)
3630 freelocale (locale_t loc
)
3635 emacs_setlocale (int category
, char const *locale
)
3637 # ifdef HAVE_SETLOCALE
3639 char *loc
= setlocale (category
, locale
);
3650 wcscoll_l (wchar_t const *a
, wchar_t const *b
, locale_t loc
)
3653 char *oldloc
= emacs_setlocale (LC_COLLATE
, NULL
);
3661 char *oldcopy
= SAFE_ALLOCA (strlen (oldloc
) + 1);
3662 strcpy (oldcopy
, oldloc
);
3663 if (! emacs_setlocale (LC_COLLATE
, loc
))
3668 result
= wcscoll (a
, b
);
3670 if (! emacs_setlocale (LC_COLLATE
, oldcopy
))
3682 str_collate (Lisp_Object s1
, Lisp_Object s2
)
3685 ptrdiff_t len
, i
, i_byte
;
3687 Lisp_Object lc_collate
;
3691 /* Convert byte stream to code points. */
3692 len
= SCHARS (s1
); i
= i_byte
= 0;
3693 SAFE_NALLOCA (p1
, 1, len
+ 1);
3695 FETCH_STRING_CHAR_ADVANCE (*(p1
+i
-1), s1
, i
, i_byte
);
3698 len
= SCHARS (s2
); i
= i_byte
= 0;
3699 SAFE_NALLOCA (p2
, 1, len
+ 1);
3701 FETCH_STRING_CHAR_ADVANCE (*(p2
+i
-1), s2
, i
, i_byte
);
3705 Fgetenv_internal (build_string ("LC_COLLATE"), Vprocess_environment
);
3707 if (STRINGP (lc_collate
))
3709 locale_t loc
= newlocale (LC_COLLATE_MASK
, SSDATA (lc_collate
), 0);
3711 error ("Wrong locale: %s", strerror (errno
));
3713 res
= wcscoll_l (p1
, p2
, loc
);
3720 res
= wcscoll (p1
, p2
);
3724 error ("Wrong argument: %s", strerror (err
));
3729 #endif /* __STDC_ISO_10646__ */
3733 str_collate (Lisp_Object s1
, Lisp_Object s2
)
3735 Lisp_Object lc_collate
=
3736 Fgetenv_internal (build_string ("LC_COLLATE"), Vprocess_environment
);
3737 char *loc
= STRINGP (lc_collate
) ? SSDATA (lc_collate
) : NULL
;
3739 return w32_compare_strings (SDATA (s1
), SDATA (s2
), loc
);
3741 #endif /* WINDOWSNT */