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>
49 # include <sys/resource.h>
55 #define write sys_write
57 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
60 #endif /* not WINDOWSNT */
62 #include <sys/types.h>
66 /* Get SI_SRPC_DOMAIN, if it is available. */
67 #ifdef HAVE_SYS_SYSTEMINFO_H
68 #include <sys/systeminfo.h>
71 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
75 #include <sys/param.h>
82 #ifdef HAVE_SYS_UTSNAME_H
83 #include <sys/utsname.h>
85 #endif /* HAVE_SYS_UTSNAME_H */
90 #include "termhooks.h"
93 #include "dispextern.h"
95 #include "cm.h" /* for reset_sys_modes */
99 /* In process.h which conflicts with the local copy. */
101 int _cdecl
_spawnlp (int, const char *, const char *, ...);
102 int _cdecl
_getpid (void);
105 #include "syssignal.h"
108 static void emacs_get_tty (int, struct emacs_tty
*);
109 static int emacs_set_tty (int, struct emacs_tty
*, bool);
111 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
113 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
116 /* Declare here, including term.h is problematic on some systems. */
117 extern void tputs (const char *, int, int (*)(int));
119 static const int baud_convert
[] =
121 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
122 1800, 2400, 4800, 9600, 19200, 38400
126 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
128 /* Return the current working directory. Returns NULL on errors.
129 Any other returned value must be freed with free. This is used
130 only when get_current_dir_name is not defined on the system. */
132 get_current_dir_name (void)
135 char *pwd
= getenv ("PWD");
136 struct stat dotstat
, pwdstat
;
137 /* If PWD is accurate, use it instead of calling getcwd. PWD is
138 sometimes a nicer name, and using it may avoid a fatal error if a
139 parent directory is searchable but not readable. */
141 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
142 && stat (pwd
, &pwdstat
) == 0
143 && stat (".", &dotstat
) == 0
144 && dotstat
.st_ino
== pwdstat
.st_ino
145 && dotstat
.st_dev
== pwdstat
.st_dev
147 && strlen (pwd
) < MAXPATHLEN
151 buf
= malloc (strlen (pwd
) + 1);
158 size_t buf_size
= 1024;
159 buf
= malloc (buf_size
);
164 if (getcwd (buf
, buf_size
) == buf
)
168 int tmp_errno
= errno
;
174 buf
= realloc (buf
, buf_size
);
184 /* Discard pending input on all input descriptors. */
187 discard_tty_input (void)
190 struct emacs_tty buf
;
195 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
196 while (dos_keyread () != -1)
198 #else /* not MSDOS */
200 struct tty_display_info
*tty
;
201 for (tty
= tty_list
; tty
; tty
= tty
->next
)
203 if (tty
->input
) /* Is the device suspended? */
205 emacs_get_tty (fileno (tty
->input
), &buf
);
206 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
210 #endif /* not MSDOS */
211 #endif /* not WINDOWSNT */
217 /* Arrange for character C to be read as the next input from
219 XXX What if we have multiple ttys?
225 if (! (FRAMEP (selected_frame
)
226 && FRAME_LIVE_P (XFRAME (selected_frame
))
227 && FRAME_TERMCAP_P (XFRAME (selected_frame
))))
230 /* Should perhaps error if in batch mode */
232 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
233 #else /* no TIOCSTI */
234 error ("Cannot stuff terminal input characters in this version of Unix");
235 #endif /* no TIOCSTI */
241 init_baud_rate (int fd
)
251 #else /* not DOS_NT */
256 emacs_ospeed
= cfgetospeed (&sg
);
257 #endif /* not DOS_NT */
260 baud_rate
= (emacs_ospeed
< ARRAYELTS (baud_convert
)
261 ? baud_convert
[emacs_ospeed
] : 9600);
270 /* Wait for the subprocess with process id CHILD to terminate or change status.
271 CHILD must be a child process that has not been reaped.
272 If STATUS is non-null, store the waitpid-style exit status into *STATUS
273 and tell wait_reading_process_output that it needs to look around.
274 Use waitpid-style OPTIONS when waiting.
275 If INTERRUPTIBLE, this function is interruptible by a signal.
277 Return CHILD if successful, 0 if no status is available;
278 the latter is possible only when options & NOHANG. */
280 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
284 /* Invoke waitpid only with a known process ID; do not invoke
285 waitpid with a nonpositive argument. Otherwise, Emacs might
286 reap an unwanted process by mistake. For example, invoking
287 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
288 so that another thread running glib won't find them. */
291 while ((pid
= waitpid (child
, status
, options
)) < 0)
293 /* Check that CHILD is a child process that has not been reaped,
294 and that STATUS and OPTIONS are valid. Otherwise abort,
295 as continuing after this internal error could cause Emacs to
296 become confused and kill innocent-victim processes. */
300 /* Note: the MS-Windows emulation of waitpid calls QUIT
306 /* If successful and status is requested, tell wait_reading_process_output
307 that it needs to wake up and look around. */
308 if (pid
&& status
&& input_available_clear_time
)
309 *input_available_clear_time
= make_timespec (0, 0);
314 /* Wait for the subprocess with process id CHILD to terminate.
315 CHILD must be a child process that has not been reaped.
316 If STATUS is non-null, store the waitpid-style exit status into *STATUS
317 and tell wait_reading_process_output that it needs to look around.
318 If INTERRUPTIBLE, this function is interruptible by a signal. */
320 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
322 get_child_status (child
, status
, 0, interruptible
);
325 /* Report whether the subprocess with process id CHILD has changed status.
326 Termination counts as a change of status.
327 CHILD must be a child process that has not been reaped.
328 If STATUS is non-null, store the waitpid-style exit status into *STATUS
329 and tell wait_reading_process_output that it needs to look around.
330 Use waitpid-style OPTIONS to check status, but do not wait.
332 Return CHILD if successful, 0 if no status is available because
333 the process's state has not changed. */
335 child_status_changed (pid_t child
, int *status
, int options
)
337 return get_child_status (child
, status
, WNOHANG
| options
, 0);
341 /* Set up the terminal at the other end of a pseudo-terminal that
342 we will be controlling an inferior through.
343 It should not echo or do line-editing, since that is done
344 in Emacs. No padding needed for insertion into an Emacs buffer. */
347 child_setup_tty (int out
)
352 emacs_get_tty (out
, &s
);
353 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
354 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
356 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
357 Some versions of GNU Hurd do not have FFDLY? */
359 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
360 /* No output delays */
362 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
363 /* No output delays */
366 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
367 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
369 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
372 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
375 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
377 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
378 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
379 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
380 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
383 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
386 #ifdef SIGNALS_VIA_CHARACTERS
387 /* the QUIT and INTR character are used in process_send_signal
388 so set them here to something useful. */
389 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
390 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
391 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
392 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
393 #endif /* not SIGNALS_VIA_CHARACTERS */
396 /* Also, PTY overloads NUL and BREAK.
397 don't ignore break, but don't signal either, so it looks like NUL. */
398 s
.main
.c_iflag
&= ~IGNBRK
;
399 s
.main
.c_iflag
&= ~BRKINT
;
400 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
401 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
402 would force it to 0377. That looks like duplicated code. */
403 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
406 /* We originally enabled ICANON (and set VEOF to 04), and then had
407 process.c send additional EOF chars to flush the output when faced
408 with long lines, but this leads to weird effects when the
409 subprocess has disabled ICANON and ends up seeing those spurious
410 extra EOFs. So we don't send EOFs any more in
411 process.c:send_process. First we tried to disable ICANON by
412 default, so if a subsprocess sets up ICANON, it's his problem (or
413 the Elisp package that talks to it) to deal with lines that are
414 too long. But this disables some features, such as the ability
415 to send EOF signals. So we re-enabled ICANON but there is no
416 more "send eof to flush" going on (which is wrong and unportable
417 in itself). The correct way to handle too much output is to
418 buffer what could not be written and then write it again when
419 select returns ok for writing. This has it own set of
420 problems. Write is now asynchronous, is that a problem? How much
421 do we buffer, and what do we do when that limit is reached? */
423 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
424 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
425 #if 0 /* These settings only apply to non-ICANON mode. */
426 s
.main
.c_cc
[VMIN
] = 1;
427 s
.main
.c_cc
[VTIME
] = 0;
430 emacs_set_tty (out
, &s
, 0);
431 #endif /* not WINDOWSNT */
433 #endif /* not MSDOS */
436 /* Record a signal code and the action for it. */
440 struct sigaction action
;
443 static void save_signal_handlers (struct save_signal
*);
444 static void restore_signal_handlers (struct save_signal
*);
446 /* Suspend the Emacs process; give terminal to its superior. */
454 /* On a system where suspending is not implemented,
455 instead fork a subshell and let it talk directly to the terminal
462 /* Fork a subshell. */
467 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
470 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
472 char oldwd
[MAX_UTF8_PATH
];
477 struct save_signal saved_handlers
[5];
478 char *str
= SSDATA (encode_current_directory ());
484 char *volatile str_volatile
= str
;
491 error ("Can't spawn subshell");
493 saved_handlers
[0].code
= SIGINT
;
494 saved_handlers
[1].code
= SIGQUIT
;
495 saved_handlers
[2].code
= SIGTERM
;
497 saved_handlers
[3].code
= SIGIO
;
498 saved_handlers
[4].code
= 0;
500 saved_handlers
[3].code
= 0;
504 save_signal_handlers (saved_handlers
);
511 #ifdef DOS_NT /* MW, Aug 1993 */
512 getcwd (oldwd
, sizeof oldwd
);
514 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
517 sh
= egetenv ("SHELL");
521 /* Use our buffer's default directory for the subshell. */
522 if (chdir (str
) != 0)
526 _exit (EXIT_CANCELED
);
530 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
532 char *epwd
= getenv ("PWD");
533 char old_pwd
[MAXPATHLEN
+1+4];
535 /* If PWD is set, pass it with corrected value. */
538 strcpy (old_pwd
, epwd
);
539 setenv ("PWD", str
, 1);
542 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
544 putenv (old_pwd
); /* restore previous value */
546 #else /* not MSDOS */
548 /* Waits for process completion */
549 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
550 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
552 write (1, "Can't execute subshell", 22);
553 #else /* not WINDOWSNT */
554 execlp (sh
, sh
, (char *) 0);
556 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
557 #endif /* not WINDOWSNT */
558 #endif /* not MSDOS */
561 /* Do this now if we did not do it before. */
563 save_signal_handlers (saved_handlers
);
567 wait_for_termination (pid
, &status
, 0);
569 restore_signal_handlers (saved_handlers
);
573 save_signal_handlers (struct save_signal
*saved_handlers
)
575 while (saved_handlers
->code
)
577 struct sigaction action
;
578 emacs_sigaction_init (&action
, SIG_IGN
);
579 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
585 restore_signal_handlers (struct save_signal
*saved_handlers
)
587 while (saved_handlers
->code
)
589 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
595 static int old_fcntl_flags
[FD_SETSIZE
];
602 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
603 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
604 interrupts_deferred
= 0;
613 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
627 sigemptyset (&unblocked
);
629 sigaddset (&unblocked
, SIGWINCH
);
631 sigaddset (&unblocked
, SIGIO
);
632 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
634 interrupts_deferred
= 0;
639 unrequest_sigio (void)
647 sigemptyset (&blocked
);
649 sigaddset (&blocked
, SIGWINCH
);
651 sigaddset (&blocked
, SIGIO
);
652 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
653 interrupts_deferred
= 1;
661 signal (SIGIO
, SIG_IGN
);
669 block_child_signal (sigset_t
*oldset
)
672 sigemptyset (&blocked
);
673 sigaddset (&blocked
, SIGCHLD
);
674 sigaddset (&blocked
, SIGINT
);
675 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
678 /* Unblock SIGCHLD. */
681 unblock_child_signal (sigset_t
const *oldset
)
683 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
688 /* Saving and restoring the process group of Emacs's terminal. */
690 /* The process group of which Emacs was a member when it initially
693 If Emacs was in its own process group (i.e. inherited_pgroup ==
694 getpid ()), then we know we're running under a shell with job
695 control (Emacs would never be run as part of a pipeline).
698 If Emacs was not in its own process group, then we know we're
699 running under a shell (or a caller) that doesn't know how to
700 separate itself from Emacs (like sh). Emacs must be in its own
701 process group in order to receive SIGIO correctly. In this
702 situation, we put ourselves in our own pgroup, forcibly set the
703 tty's pgroup to our pgroup, and make sure to restore and reinstate
704 the tty's pgroup just like any other terminal setting. If
705 inherited_group was not the tty's pgroup, then we'll get a
706 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
707 it goes foreground in the future, which is what should happen. */
709 static pid_t inherited_pgroup
;
712 init_foreground_group (void)
714 pid_t pgrp
= getpgrp ();
715 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
718 /* Block and unblock SIGTTOU. */
721 block_tty_out_signal (sigset_t
*oldset
)
725 sigemptyset (&blocked
);
726 sigaddset (&blocked
, SIGTTOU
);
727 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
732 unblock_tty_out_signal (sigset_t
const *oldset
)
735 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
739 /* Safely set a controlling terminal FD's process group to PGID.
740 If we are not in the foreground already, POSIX requires tcsetpgrp
741 to deliver a SIGTTOU signal, which would stop us. This is an
742 annoyance, so temporarily ignore the signal.
744 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
745 skip all this unless SIGTTOU is defined. */
747 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
752 block_tty_out_signal (&oldset
);
753 tcsetpgrp (fd
, pgid
);
754 unblock_tty_out_signal (&oldset
);
759 /* Split off the foreground process group to Emacs alone. When we are
760 in the foreground, but not started in our own process group,
761 redirect the tty device handle FD to point to our own process
762 group. FD must be the file descriptor of the controlling tty. */
764 narrow_foreground_group (int fd
)
766 if (inherited_pgroup
&& setpgid (0, 0) == 0)
767 tcsetpgrp_without_stopping (fd
, getpid ());
770 /* Set the tty to our original foreground group. */
772 widen_foreground_group (int fd
)
774 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
775 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
778 /* Getting and setting emacs_tty structures. */
780 /* Set *TC to the parameters associated with the terminal FD,
781 or clear it if the parameters are not available. */
783 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
785 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
787 /* We have those nifty POSIX tcmumbleattr functions. */
788 memset (&settings
->main
, 0, sizeof (settings
->main
));
789 tcgetattr (fd
, &settings
->main
);
794 /* Set the parameters of the tty on FD according to the contents of
795 *SETTINGS. If FLUSHP, discard input.
796 Return 0 if all went well, and -1 (setting errno) if anything failed. */
799 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
801 /* Set the primary parameters - baud rate, character size, etcetera. */
804 /* We have those nifty POSIX tcmumbleattr functions.
805 William J. Smith <wjs@wiis.wang.com> writes:
806 "POSIX 1003.1 defines tcsetattr to return success if it was
807 able to perform any of the requested actions, even if some
808 of the requested actions could not be performed.
809 We must read settings back to ensure tty setup properly.
810 AIX requires this to keep tty from hanging occasionally." */
811 /* This make sure that we don't loop indefinitely in here. */
812 for (i
= 0 ; i
< 10 ; i
++)
813 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
824 memset (&new, 0, sizeof (new));
825 /* Get the current settings, and see if they're what we asked for. */
826 tcgetattr (fd
, &new);
827 /* We cannot use memcmp on the whole structure here because under
828 * aix386 the termios structure has some reserved field that may
831 if ( new.c_iflag
== settings
->main
.c_iflag
832 && new.c_oflag
== settings
->main
.c_oflag
833 && new.c_cflag
== settings
->main
.c_cflag
834 && new.c_lflag
== settings
->main
.c_lflag
835 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
842 /* We have survived the tempest. */
849 static int old_fcntl_owner
[FD_SETSIZE
];
850 #endif /* F_SETOWN */
852 /* This may also be defined in stdio,
853 but if so, this does no harm,
854 and using the same name avoids wasting the other one's space. */
857 unsigned char _sobuf
[BUFSIZ
+8];
862 /* Initialize the terminal mode on all tty devices that are currently
866 init_all_sys_modes (void)
868 struct tty_display_info
*tty
;
869 for (tty
= tty_list
; tty
; tty
= tty
->next
)
870 init_sys_modes (tty
);
873 /* Initialize the terminal mode on the given tty device. */
876 init_sys_modes (struct tty_display_info
*tty_out
)
878 struct emacs_tty tty
;
879 Lisp_Object terminal
;
881 Vtty_erase_char
= Qnil
;
886 if (!tty_out
->output
)
887 return; /* The tty is suspended. */
889 narrow_foreground_group (fileno (tty_out
->input
));
891 if (! tty_out
->old_tty
)
892 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
894 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
896 tty
= *tty_out
->old_tty
;
898 #if !defined (DOS_NT)
899 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
901 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
902 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
903 #ifdef INLCR /* I'm just being cautious,
904 since I can't check how widespread INLCR is--rms. */
905 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
908 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
910 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
911 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
913 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
915 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
916 if (tty_out
->flow_control
)
918 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
920 tty
.main
.c_iflag
&= ~IXANY
;
924 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
925 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
927 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
929 if (tty_out
->meta_key
)
931 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
932 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
936 XSETTERMINAL(terminal
, tty_out
->terminal
);
937 if (!NILP (Fcontrolling_tty_p (terminal
)))
939 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
940 /* Set up C-g for both SIGQUIT and SIGINT.
941 We don't know which we will get, but we handle both alike
942 so which one it really gives us does not matter. */
943 tty
.main
.c_cc
[VQUIT
] = quit_char
;
947 /* We normally don't get interrupt or quit signals from tty
948 devices other than our controlling terminal; therefore,
949 we must handle C-g as normal input. Unfortunately, this
950 means that the interrupt and quit feature must be
951 disabled on secondary ttys, or we would not even see the
954 Note that even though emacsclient could have special code
955 to pass SIGINT to Emacs, we should _not_ enable
956 interrupt/quit keys for emacsclient frames. This means
957 that we can't break out of loops in C code from a
958 secondary tty frame, but we can always decide what
959 display the C-g came from, which is more important from a
960 usability point of view. (Consider the case when two
961 people work together using the same Emacs instance.) */
962 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
963 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
965 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
966 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
968 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
973 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
976 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
978 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
979 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
982 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
985 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
986 #endif /* VREPRINT */
988 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
991 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
992 #endif /* VDISCARD */
994 if (tty_out
->flow_control
)
997 tty
.main
.c_cc
[VSTART
] = '\021';
1000 tty
.main
.c_cc
[VSTOP
] = '\023';
1006 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1009 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1014 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1015 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1016 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1017 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1018 if (tty_out
->flow_control
)
1021 tty
.main
.c_cc
[VSTART
] = '\021';
1024 tty
.main
.c_cc
[VSTOP
] = '\023';
1027 /* Also, PTY overloads NUL and BREAK.
1028 don't ignore break, but don't signal either, so it looks like NUL.
1029 This really serves a purpose only if running in an XTERM window
1030 or via TELNET or the like, but does no harm elsewhere. */
1031 tty
.main
.c_iflag
&= ~IGNBRK
;
1032 tty
.main
.c_iflag
&= ~BRKINT
;
1034 #endif /* not DOS_NT */
1036 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1037 if (!tty_out
->term_initted
)
1038 internal_terminal_init ();
1039 dos_ttraw (tty_out
);
1042 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1044 /* This code added to insure that, if flow-control is not to be used,
1045 we have an unlocked terminal at the start. */
1048 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1051 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1054 #if !defined (DOS_NT)
1056 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1061 if (interrupt_input
)
1063 old_fcntl_owner
[fileno (tty_out
->input
)] =
1064 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1065 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1066 init_sigio (fileno (tty_out
->input
));
1068 if (gpm_tty
== tty_out
)
1070 /* Arrange for mouse events to give us SIGIO signals. */
1071 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1072 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1073 init_sigio (gpm_fd
);
1075 #endif /* HAVE_GPM */
1077 #endif /* F_GETOWN */
1080 /* This symbol is defined on recent USG systems.
1081 Someone says without this call USG won't really buffer the file
1082 even with a call to setbuf. */
1083 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1085 setbuf (tty_out
->output
, (char *) _sobuf
);
1088 if (tty_out
->terminal
->set_terminal_modes_hook
)
1089 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1091 if (!tty_out
->term_initted
)
1093 Lisp_Object tail
, frame
;
1094 FOR_EACH_FRAME (tail
, frame
)
1096 /* XXX This needs to be revised. */
1097 if (FRAME_TERMCAP_P (XFRAME (frame
))
1098 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1099 init_frame_faces (XFRAME (frame
));
1103 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1105 /* We used to call "direct_output_forward_char(0)" here,
1106 but it's not clear why, since it may not do anything anyway. */
1110 Lisp_Object tail
, frame
;
1112 FOR_EACH_FRAME (tail
, frame
)
1114 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1115 || FRAME_MSDOS_P (XFRAME (frame
)))
1116 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1117 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1121 tty_out
->term_initted
= 1;
1124 /* Return true if safe to use tabs in output.
1125 At the time this is called, init_sys_modes has not been done yet. */
1128 tabs_safe_p (int fd
)
1130 struct emacs_tty etty
;
1132 emacs_get_tty (fd
, &etty
);
1135 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1136 #else /* not TABDLY */
1138 #endif /* not TABDLY */
1144 /* Get terminal size from system.
1145 Store number of lines into *HEIGHTP and width into *WIDTHP.
1146 We store 0 if there's no valid information. */
1149 get_tty_size (int fd
, int *widthp
, int *heightp
)
1151 #if defined TIOCGWINSZ
1154 struct winsize size
;
1156 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1157 *widthp
= *heightp
= 0;
1160 *widthp
= size
.ws_col
;
1161 *heightp
= size
.ws_row
;
1164 #elif defined TIOCGSIZE
1166 /* SunOS - style. */
1167 struct ttysize size
;
1169 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1170 *widthp
= *heightp
= 0;
1173 *widthp
= size
.ts_cols
;
1174 *heightp
= size
.ts_lines
;
1177 #elif defined WINDOWSNT
1179 CONSOLE_SCREEN_BUFFER_INFO info
;
1180 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1182 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1183 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1186 *widthp
= *heightp
= 0;
1190 *widthp
= ScreenCols ();
1191 *heightp
= ScreenRows ();
1193 #else /* system doesn't know size */
1201 /* Set the logical window size associated with descriptor FD
1202 to HEIGHT and WIDTH. This is used mainly with ptys.
1203 Return a negative value on failure. */
1206 set_window_size (int fd
, int height
, int width
)
1211 struct winsize size
;
1212 size
.ws_row
= height
;
1213 size
.ws_col
= width
;
1215 return ioctl (fd
, TIOCSWINSZ
, &size
);
1220 /* SunOS - style. */
1221 struct ttysize size
;
1222 size
.ts_lines
= height
;
1223 size
.ts_cols
= width
;
1225 return ioctl (fd
, TIOCGSIZE
, &size
);
1228 #endif /* not SunOS-style */
1229 #endif /* not BSD-style */
1234 /* Prepare all terminal devices for exiting Emacs. */
1237 reset_all_sys_modes (void)
1239 struct tty_display_info
*tty
;
1240 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1241 reset_sys_modes (tty
);
1244 /* Prepare the terminal for closing it; move the cursor to the
1245 bottom of the frame, turn off interrupt-driven I/O, etc. */
1248 reset_sys_modes (struct tty_display_info
*tty_out
)
1255 if (!tty_out
->term_initted
)
1258 if (!tty_out
->output
)
1259 return; /* The tty is suspended. */
1261 /* Go to and clear the last line of the terminal. */
1263 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1265 /* Code adapted from tty_clear_end_of_line. */
1266 if (tty_out
->TS_clr_line
)
1268 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1271 { /* have to do it the hard way */
1273 tty_turn_off_insert (tty_out
);
1275 for (i
= cursorX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1277 fputc (' ', tty_out
->output
);
1281 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1282 fflush (tty_out
->output
);
1284 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1285 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1287 /* Avoid possible loss of output when changing terminal modes. */
1288 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1293 if (interrupt_input
)
1295 reset_sigio (fileno (tty_out
->input
));
1296 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1297 old_fcntl_owner
[fileno (tty_out
->input
)]);
1299 #endif /* F_SETOWN */
1300 fcntl (fileno (tty_out
->input
), F_SETFL
,
1301 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1304 if (tty_out
->old_tty
)
1305 while (emacs_set_tty (fileno (tty_out
->input
),
1306 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1309 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1313 widen_foreground_group (fileno (tty_out
->input
));
1318 /* Set up the proper status flags for use of a pty. */
1323 /* I'm told that TOICREMOTE does not mean control chars
1324 "can't be sent" but rather that they don't have
1325 input-editing or signaling effects.
1326 That should be good, because we have other ways
1327 to do those things in Emacs.
1328 However, telnet mode seems not to work on 4.2.
1329 So TIOCREMOTE is turned off now. */
1331 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1332 will hang. In particular, the "timeout" feature (which
1333 causes a read to return if there is no data available)
1334 does this. Also it is known that telnet mode will hang
1335 in such a way that Emacs must be stopped (perhaps this
1336 is the same problem).
1338 If TIOCREMOTE is turned off, then there is a bug in
1339 hp-ux which sometimes loses data. Apparently the
1340 code which blocks the master process when the internal
1341 buffer fills up does not work. Other than this,
1342 though, everything else seems to work fine.
1344 Since the latter lossage is more benign, we may as well
1345 lose that way. -- cph */
1347 #if defined (UNIX98_PTYS)
1350 ioctl (fd
, FIONBIO
, &on
);
1355 #endif /* HAVE_PTYS */
1358 #include <sys/socket.h>
1360 #endif /* HAVE_SOCKETS */
1363 #ifndef HAVE_H_ERRNO
1366 #endif /* TRY_AGAIN */
1369 init_system_name (void)
1371 #ifndef HAVE_GETHOSTNAME
1374 Vsystem_name
= build_string (uts
.nodename
);
1375 #else /* HAVE_GETHOSTNAME */
1376 char *hostname_alloc
= NULL
;
1377 char hostname_buf
[256];
1378 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1379 char *hostname
= hostname_buf
;
1381 /* Try to get the host name; if the buffer is too short, try
1382 again. Apparently, the only indication gethostname gives of
1383 whether the buffer was large enough is the presence or absence
1384 of a '\0' in the string. Eech. */
1387 gethostname (hostname
, hostname_size
- 1);
1388 hostname
[hostname_size
- 1] = '\0';
1390 /* Was the buffer large enough for the '\0'? */
1391 if (strlen (hostname
) < hostname_size
- 1)
1394 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1395 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1398 /* Turn the hostname into the official, fully-qualified hostname.
1399 Don't do this if we're going to dump; this can confuse system
1400 libraries on some machines and make the dumped emacs core dump. */
1403 #endif /* not CANNOT_DUMP */
1404 if (! strchr (hostname
, '.'))
1407 #ifdef HAVE_GETADDRINFO
1408 struct addrinfo
*res
;
1409 struct addrinfo hints
;
1412 memset (&hints
, 0, sizeof (hints
));
1413 hints
.ai_socktype
= SOCK_STREAM
;
1414 hints
.ai_flags
= AI_CANONNAME
;
1416 for (count
= 0;; count
++)
1418 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1419 || ret
!= EAI_AGAIN
)
1424 Fsleep_for (make_number (1), Qnil
);
1429 struct addrinfo
*it
= res
;
1432 char *fqdn
= it
->ai_canonname
;
1433 if (fqdn
&& strchr (fqdn
, '.')
1434 && strcmp (fqdn
, "localhost.localdomain") != 0)
1440 ptrdiff_t len
= strlen (it
->ai_canonname
);
1441 if (hostname_size
<= len
)
1443 hostname_size
= len
+ 1;
1444 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1447 strcpy (hostname
, it
->ai_canonname
);
1451 #else /* !HAVE_GETADDRINFO */
1453 for (count
= 0;; count
++)
1459 hp
= gethostbyname (hostname
);
1461 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1468 Fsleep_for (make_number (1), Qnil
);
1473 char *fqdn
= (char *) hp
->h_name
;
1475 if (!strchr (fqdn
, '.'))
1477 /* We still don't have a fully qualified domain name.
1478 Try to find one in the list of alternate names */
1479 char **alias
= hp
->h_aliases
;
1481 && (!strchr (*alias
, '.')
1482 || !strcmp (*alias
, "localhost.localdomain")))
1489 #endif /* !HAVE_GETADDRINFO */
1491 #endif /* HAVE_SOCKETS */
1492 Vsystem_name
= build_string (hostname
);
1493 xfree (hostname_alloc
);
1494 #endif /* HAVE_GETHOSTNAME */
1497 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1498 if (*p
== ' ' || *p
== '\t')
1503 sigset_t empty_mask
;
1505 static struct sigaction process_fatal_action
;
1508 emacs_sigaction_flags (void)
1511 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1512 'select') to reset their timeout on some platforms (e.g.,
1513 HP-UX 11), which is not what we want. Also, when Emacs is
1514 interactive, we don't want SA_RESTART because we need to poll
1515 for pending input so we need long-running syscalls to be interrupted
1516 after a signal that sets pending_signals.
1518 Non-interactive keyboard input goes through stdio, where we
1519 always want restartable system calls. */
1526 /* Store into *ACTION a signal action suitable for Emacs, with handler
1529 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1531 sigemptyset (&action
->sa_mask
);
1533 /* When handling a signal, block nonfatal system signals that are caught
1534 by Emacs. This makes race conditions less likely. */
1535 sigaddset (&action
->sa_mask
, SIGALRM
);
1537 sigaddset (&action
->sa_mask
, SIGCHLD
);
1540 sigaddset (&action
->sa_mask
, SIGDANGER
);
1542 #ifdef PROFILER_CPU_SUPPORT
1543 sigaddset (&action
->sa_mask
, SIGPROF
);
1546 sigaddset (&action
->sa_mask
, SIGWINCH
);
1548 if (! noninteractive
)
1550 sigaddset (&action
->sa_mask
, SIGINT
);
1551 sigaddset (&action
->sa_mask
, SIGQUIT
);
1553 sigaddset (&action
->sa_mask
, SIGIO
);
1557 action
->sa_handler
= handler
;
1558 action
->sa_flags
= emacs_sigaction_flags ();
1561 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1562 static pthread_t main_thread
;
1565 /* SIG has arrived at the current process. Deliver it to the main
1566 thread, which should handle it with HANDLER.
1568 If we are on the main thread, handle the signal SIG with HANDLER.
1569 Otherwise, redirect the signal to the main thread, blocking it from
1570 this thread. POSIX says any thread can receive a signal that is
1571 associated with a process, process group, or asynchronous event.
1572 On GNU/Linux that is not true, but for other systems (FreeBSD at
1575 deliver_process_signal (int sig
, signal_handler_t handler
)
1577 /* Preserve errno, to avoid race conditions with signal handlers that
1578 might change errno. Races can occur even in single-threaded hosts. */
1579 int old_errno
= errno
;
1581 bool on_main_thread
= true;
1582 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1583 if (! pthread_equal (pthread_self (), main_thread
))
1586 sigemptyset (&blocked
);
1587 sigaddset (&blocked
, sig
);
1588 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1589 pthread_kill (main_thread
, sig
);
1590 on_main_thread
= false;
1599 /* Static location to save a fatal backtrace in a thread.
1600 FIXME: If two subsidiary threads fail simultaneously, the resulting
1601 backtrace may be garbage. */
1602 enum { BACKTRACE_LIMIT_MAX
= 500 };
1603 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1604 static int thread_backtrace_npointers
;
1606 /* SIG has arrived at the current thread.
1607 If we are on the main thread, handle the signal SIG with HANDLER.
1608 Otherwise, this is a fatal error in the handling thread. */
1610 deliver_thread_signal (int sig
, signal_handler_t handler
)
1612 int old_errno
= errno
;
1614 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1615 if (! pthread_equal (pthread_self (), main_thread
))
1617 thread_backtrace_npointers
1618 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1619 sigaction (sig
, &process_fatal_action
, 0);
1620 pthread_kill (main_thread
, sig
);
1622 /* Avoid further damage while the main thread is exiting. */
1624 sigsuspend (&empty_mask
);
1632 #if !HAVE_DECL_SYS_SIGLIST
1634 # ifdef _sys_siglist
1635 # define sys_siglist _sys_siglist
1636 # elif HAVE_DECL___SYS_SIGLIST
1637 # define sys_siglist __sys_siglist
1639 # define sys_siglist my_sys_siglist
1640 static char const *sys_siglist
[NSIG
];
1645 # define sys_siglist_entries _sys_nsig
1647 # define sys_siglist_entries NSIG
1650 /* Handle bus errors, invalid instruction, etc. */
1652 handle_fatal_signal (int sig
)
1654 terminate_due_to_signal (sig
, 40);
1658 deliver_fatal_signal (int sig
)
1660 deliver_process_signal (sig
, handle_fatal_signal
);
1664 deliver_fatal_thread_signal (int sig
)
1666 deliver_thread_signal (sig
, handle_fatal_signal
);
1669 static _Noreturn
void
1670 handle_arith_signal (int sig
)
1672 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1673 xsignal0 (Qarith_error
);
1677 deliver_arith_signal (int sig
)
1679 deliver_thread_signal (sig
, handle_arith_signal
);
1684 /* Handler for SIGDANGER. */
1686 handle_danger_signal (int sig
)
1688 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1690 /* It might be unsafe to call do_auto_save now. */
1691 force_auto_save_soon ();
1695 deliver_danger_signal (int sig
)
1697 deliver_process_signal (sig
, handle_danger_signal
);
1701 /* Treat SIG as a terminating signal, unless it is already ignored and
1702 we are in --batch mode. Among other things, this makes nohup work. */
1704 maybe_fatal_sig (int sig
)
1706 bool catch_sig
= !noninteractive
;
1709 struct sigaction old_action
;
1710 sigaction (sig
, 0, &old_action
);
1711 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1714 sigaction (sig
, &process_fatal_action
, 0);
1718 init_signals (bool dumping
)
1720 struct sigaction thread_fatal_action
;
1721 struct sigaction action
;
1723 sigemptyset (&empty_mask
);
1725 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1726 main_thread
= pthread_self ();
1729 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1732 sys_siglist
[SIGABRT
] = "Aborted";
1734 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1736 sys_siglist
[SIGALRM
] = "Alarm clock";
1738 sys_siglist
[SIGBUS
] = "Bus error";
1741 sys_siglist
[SIGCHLD
] = "Child status changed";
1744 sys_siglist
[SIGCONT
] = "Continued";
1747 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1750 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1753 sys_siglist
[SIGEMT
] = "Emulation trap";
1755 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1757 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1760 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1762 sys_siglist
[SIGHUP
] = "Hangup";
1763 sys_siglist
[SIGILL
] = "Illegal instruction";
1764 sys_siglist
[SIGINT
] = "Interrupt";
1766 sys_siglist
[SIGIO
] = "I/O possible";
1769 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1772 sys_siglist
[SIGIOT
] = "IOT trap";
1774 sys_siglist
[SIGKILL
] = "Killed";
1776 sys_siglist
[SIGLOST
] = "Resource lost";
1779 sys_siglist
[SIGLWP
] = "SIGLWP";
1782 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1785 sys_siglist
[SIGWIND
] = "SIGPHONE";
1787 sys_siglist
[SIGPIPE
] = "Broken pipe";
1789 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1792 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1795 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1798 sys_siglist
[SIGPWR
] = "Power-fail restart";
1800 sys_siglist
[SIGQUIT
] = "Quit";
1802 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1805 sys_siglist
[SIGSAK
] = "Secure attention";
1807 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1809 sys_siglist
[SIGSOUND
] = "Sound completed";
1812 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1815 sys_siglist
[SIGSTP
] = "Stopped (user)";
1818 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1820 sys_siglist
[SIGTERM
] = "Terminated";
1822 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1825 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1828 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1831 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1834 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1837 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1840 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1843 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1846 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1849 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1852 sys_siglist
[SIGWINCH
] = "Window size changed";
1855 sys_siglist
[SIGWIND
] = "SIGWIND";
1858 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1861 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1864 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1866 /* Don't alter signal handlers if dumping. On some machines,
1867 changing signal handlers sets static data that would make signals
1868 fail to work right when the dumped Emacs is run. */
1872 sigfillset (&process_fatal_action
.sa_mask
);
1873 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1874 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1876 sigfillset (&thread_fatal_action
.sa_mask
);
1877 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1878 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1880 /* SIGINT may need special treatment on MS-Windows. See
1881 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1882 Please update the doc of kill-emacs, kill-emacs-hook, and
1883 NEWS if you change this. */
1885 maybe_fatal_sig (SIGHUP
);
1886 maybe_fatal_sig (SIGINT
);
1887 maybe_fatal_sig (SIGTERM
);
1889 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1890 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1891 to behave more like typical batch applications do. */
1892 if (! noninteractive
)
1893 signal (SIGPIPE
, SIG_IGN
);
1895 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1896 sigaction (SIGILL
, &thread_fatal_action
, 0);
1897 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1899 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1900 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1901 interpreter's floating point operations, so treat SIGFPE as an
1902 arith-error if it arises in the main thread. */
1903 if (IEEE_FLOATING_POINT
)
1904 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1907 emacs_sigaction_init (&action
, deliver_arith_signal
);
1908 sigaction (SIGFPE
, &action
, 0);
1912 add_user_signal (SIGUSR1
, "sigusr1");
1915 add_user_signal (SIGUSR2
, "sigusr2");
1917 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1919 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1922 sigaction (SIGORE
, &thread_fatal_action
, 0);
1925 sigaction (SIGUME
, &thread_fatal_action
, 0);
1928 sigaction (SIGDLK
, &process_fatal_action
, 0);
1931 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1934 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1937 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1940 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1942 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1944 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1946 sigaction (SIGTERM
, &process_fatal_action
, 0);
1948 signal (SIGPROF
, SIG_IGN
);
1951 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1954 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1958 /* This just means available memory is getting low. */
1959 emacs_sigaction_init (&action
, deliver_danger_signal
);
1960 sigaction (SIGDANGER
, &action
, 0);
1963 /* AIX-specific signals. */
1965 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1968 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1971 sigaction (SIGMSG
, &process_fatal_action
, 0);
1974 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1977 sigaction (SIGSAK
, &process_fatal_action
, 0);
1980 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1983 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1993 /* Figure out how many bits the system's random number generator uses.
1994 `random' and `lrand48' are assumed to return 31 usable bits.
1995 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1996 so we'll shift it and treat it like the 15-bit USG `rand'. */
2000 # define RAND_BITS 31
2001 # else /* !HAVE_RANDOM */
2002 # ifdef HAVE_LRAND48
2003 # define RAND_BITS 31
2004 # define random lrand48
2005 # else /* !HAVE_LRAND48 */
2006 # define RAND_BITS 15
2007 # if RAND_MAX == 32767
2008 # define random rand
2009 # else /* RAND_MAX != 32767 */
2010 # if RAND_MAX == 2147483647
2011 # define random() (rand () >> 16)
2012 # else /* RAND_MAX != 2147483647 */
2014 # define random rand
2016 # define random() (rand () >> 16)
2018 # endif /* RAND_MAX != 2147483647 */
2019 # endif /* RAND_MAX != 32767 */
2020 # endif /* !HAVE_LRAND48 */
2021 # endif /* !HAVE_RANDOM */
2022 #endif /* !RAND_BITS */
2025 seed_random (void *seed
, ptrdiff_t seed_size
)
2027 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2028 unsigned int arg
= 0;
2032 unsigned char *argp
= (unsigned char *) &arg
;
2033 unsigned char *seedp
= seed
;
2035 for (i
= 0; i
< seed_size
; i
++)
2036 argp
[i
% sizeof arg
] ^= seedp
[i
];
2040 # ifdef HAVE_LRAND48
2051 struct timespec t
= current_timespec ();
2052 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2053 seed_random (&v
, sizeof v
);
2057 * Return a nonnegative random integer out of whatever we've got.
2058 * It contains enough bits to make a random (signed) Emacs fixnum.
2059 * This suffices even for a 64-bit architecture with a 15-bit rand.
2066 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2067 val
= (random () ^ (val
<< RAND_BITS
)
2068 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2069 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2070 return val
& INTMASK
;
2073 #ifndef HAVE_SNPRINTF
2074 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2076 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2078 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2079 ptrdiff_t nbytes
= size
- 1;
2084 va_start (ap
, format
);
2085 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2089 if (nbytes
== size
- 1)
2091 /* Calculate the length of the string that would have been created
2092 had the buffer been large enough. */
2093 char stackbuf
[4000];
2095 ptrdiff_t bsize
= sizeof stackbuf
;
2096 va_start (ap
, format
);
2097 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2103 if (INT_MAX
< nbytes
)
2116 /* If a backtrace is available, output the top lines of it to stderr.
2117 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2118 This function may be called from a signal handler, so it should
2119 not invoke async-unsafe functions like malloc. */
2121 emacs_backtrace (int backtrace_limit
)
2123 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2124 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2128 if (thread_backtrace_npointers
)
2130 buffer
= thread_backtrace_buffer
;
2131 npointers
= thread_backtrace_npointers
;
2135 buffer
= main_backtrace_buffer
;
2136 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2141 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2142 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2143 if (bounded_limit
< npointers
)
2144 emacs_write (STDERR_FILENO
, "...\n", 4);
2152 terminate_due_to_signal (SIGABRT
, 40);
2156 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2157 Arrange for subprograms to not inherit the file descriptor.
2158 Prefer a method that is multithread-safe, if available.
2159 Do not fail merely because the open was interrupted by a signal.
2160 Allow the user to quit. */
2163 emacs_open (const char *file
, int oflags
, int mode
)
2166 oflags
|= O_CLOEXEC
;
2167 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2169 if (! O_CLOEXEC
&& 0 <= fd
)
2170 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2174 /* Open FILE as a stream for Emacs use, with mode MODE.
2175 Act like emacs_open with respect to threads, signals, and quits. */
2178 emacs_fopen (char const *file
, char const *mode
)
2180 int fd
, omode
, oflags
;
2182 char const *m
= mode
;
2186 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2187 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2188 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2189 default: emacs_abort ();
2195 case '+': omode
= O_RDWR
; break;
2196 case 'b': bflag
= O_BINARY
; break;
2197 case 't': bflag
= O_TEXT
; break;
2198 default: /* Ignore. */ break;
2201 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2202 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2205 /* Create a pipe for Emacs use. */
2208 emacs_pipe (int fd
[2])
2213 int result
= pipe2 (fd
, O_CLOEXEC
);
2214 if (! O_CLOEXEC
&& result
== 0)
2216 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2217 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2223 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2224 For the background behind this mess, please see Austin Group defect 529
2225 <http://austingroupbugs.net/view.php?id=529>. */
2227 #ifndef POSIX_CLOSE_RESTART
2228 # define POSIX_CLOSE_RESTART 1
2230 posix_close (int fd
, int flag
)
2232 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2233 eassert (flag
== POSIX_CLOSE_RESTART
);
2235 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2236 on a system that does not define POSIX_CLOSE_RESTART.
2238 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2239 closed, and retrying the close could inadvertently close a file
2240 descriptor allocated by some other thread. In other systems
2241 (e.g., HP/UX) FD is not closed. And in still other systems
2242 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2243 multithreaded program there can be no way to tell.
2245 So, in this case, pretend that the close succeeded. This works
2246 well on systems like GNU/Linux that close FD. Although it may
2247 leak a file descriptor on other systems, the leak is unlikely and
2248 it's better to leak than to close a random victim. */
2249 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2253 /* Close FD, retrying if interrupted. If successful, return 0;
2254 otherwise, return -1 and set errno to a non-EINTR value. Consider
2255 an EINPROGRESS error to be successful, as that's merely a signal
2256 arriving. FD is always closed when this function returns, even
2259 Do not call this function if FD is nonnegative and might already be closed,
2260 as that might close an innocent victim opened by some other thread. */
2263 emacs_close (int fd
)
2267 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2270 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2272 eassert (errno
!= EBADF
|| fd
< 0);
2273 return errno
== EINPROGRESS
? 0 : r
;
2278 /* Maximum number of bytes to read or write in a single system call.
2279 This works around a serious bug in Linux kernels before 2.6.16; see
2280 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2281 It's likely to work around similar bugs in other operating systems, so do it
2282 on all platforms. Round INT_MAX down to a page size, with the conservative
2283 assumption that page sizes are at most 2**18 bytes (any kernel with a
2284 page size larger than that shouldn't have the bug). */
2285 #ifndef MAX_RW_COUNT
2286 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2289 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2290 Return the number of bytes read, which might be less than NBYTE.
2291 On error, set errno and return -1. */
2293 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2297 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2298 passes a size that large to emacs_read. */
2300 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2301 && (errno
== EINTR
))
2306 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2307 or if a partial write occurs. If interrupted, process pending
2308 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2309 errno if this is less than NBYTE. */
2311 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2312 bool process_signals
)
2314 ptrdiff_t bytes_written
= 0;
2318 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2324 /* I originally used `QUIT' but that might causes files to
2325 be truncated if you hit C-g in the middle of it. --Stef */
2326 if (process_signals
&& pending_signals
)
2327 process_pending_signals ();
2339 return bytes_written
;
2342 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2343 interrupted or if a partial write occurs. Return the number of
2344 bytes written, setting errno if this is less than NBYTE. */
2346 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2348 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2351 /* Like emacs_write, but also process pending signals if interrupted. */
2353 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2355 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2358 /* Write a diagnostic to standard error that contains MESSAGE and a
2359 string derived from errno. Preserve errno. Do not buffer stderr.
2360 Do not process pending signals if interrupted. */
2362 emacs_perror (char const *message
)
2365 char const *error_string
= strerror (err
);
2366 char const *command
= (initial_argv
&& initial_argv
[0]
2367 ? initial_argv
[0] : "emacs");
2368 /* Write it out all at once, if it's short; this is less likely to
2369 be interleaved with other output. */
2371 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2372 command
, message
, error_string
);
2373 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2374 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2377 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2378 emacs_write (STDERR_FILENO
, ": ", 2);
2379 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2380 emacs_write (STDERR_FILENO
, ": ", 2);
2381 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2382 emacs_write (STDERR_FILENO
, "\n", 1);
2387 /* Return a struct timeval that is roughly equivalent to T.
2388 Use the least timeval not less than T.
2389 Return an extremal value if the result would overflow. */
2391 make_timeval (struct timespec t
)
2394 tv
.tv_sec
= t
.tv_sec
;
2395 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2397 if (t
.tv_nsec
% 1000 != 0)
2399 if (tv
.tv_usec
< 999999)
2401 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2411 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2412 ATIME and MTIME, respectively.
2413 FD must be either negative -- in which case it is ignored --
2414 or a file descriptor that is open on FILE.
2415 If FD is nonnegative, then FILE can be NULL. */
2417 set_file_times (int fd
, const char *filename
,
2418 struct timespec atime
, struct timespec mtime
)
2420 struct timespec timespec
[2];
2421 timespec
[0] = atime
;
2422 timespec
[1] = mtime
;
2423 return fdutimens (fd
, filename
, timespec
);
2426 /* Like strsignal, except async-signal-safe, and this function typically
2427 returns a string in the C locale rather than the current locale. */
2429 safe_strsignal (int code
)
2431 char const *signame
= 0;
2433 if (0 <= code
&& code
< sys_siglist_entries
)
2434 signame
= sys_siglist
[code
];
2436 signame
= "Unknown signal";
2442 /* For make-serial-process */
2444 serial_open (Lisp_Object port
)
2446 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2448 report_file_error ("Opening serial port", port
);
2450 ioctl (fd
, TIOCEXCL
, (char *) 0);
2456 #if !defined (HAVE_CFMAKERAW)
2457 /* Workaround for targets which are missing cfmakeraw. */
2458 /* Pasted from man page. */
2460 cfmakeraw (struct termios
*termios_p
)
2462 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2463 termios_p
->c_oflag
&= ~OPOST
;
2464 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2465 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2466 termios_p
->c_cflag
|= CS8
;
2468 #endif /* !defined (HAVE_CFMAKERAW */
2470 #if !defined (HAVE_CFSETSPEED)
2471 /* Workaround for targets which are missing cfsetspeed. */
2473 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2475 return (cfsetispeed (termios_p
, vitesse
)
2476 + cfsetospeed (termios_p
, vitesse
));
2480 /* For serial-process-configure */
2482 serial_configure (struct Lisp_Process
*p
,
2483 Lisp_Object contact
)
2485 Lisp_Object childp2
= Qnil
;
2486 Lisp_Object tem
= Qnil
;
2487 struct termios attr
;
2489 char summary
[4] = "???"; /* This usually becomes "8N1". */
2491 childp2
= Fcopy_sequence (p
->childp
);
2493 /* Read port attributes and prepare default configuration. */
2494 err
= tcgetattr (p
->outfd
, &attr
);
2496 report_file_error ("Failed tcgetattr", Qnil
);
2498 #if defined (CLOCAL)
2499 attr
.c_cflag
|= CLOCAL
;
2502 attr
.c_cflag
|= CREAD
;
2505 /* Configure speed. */
2506 if (!NILP (Fplist_member (contact
, QCspeed
)))
2507 tem
= Fplist_get (contact
, QCspeed
);
2509 tem
= Fplist_get (p
->childp
, QCspeed
);
2511 err
= cfsetspeed (&attr
, XINT (tem
));
2513 report_file_error ("Failed cfsetspeed", tem
);
2514 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2516 /* Configure bytesize. */
2517 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2518 tem
= Fplist_get (contact
, QCbytesize
);
2520 tem
= Fplist_get (p
->childp
, QCbytesize
);
2522 tem
= make_number (8);
2524 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2525 error (":bytesize must be nil (8), 7, or 8");
2526 summary
[0] = XINT (tem
) + '0';
2527 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2528 attr
.c_cflag
&= ~CSIZE
;
2529 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2531 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2532 if (XINT (tem
) != 8)
2533 error ("Bytesize cannot be changed");
2535 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2537 /* Configure parity. */
2538 if (!NILP (Fplist_member (contact
, QCparity
)))
2539 tem
= Fplist_get (contact
, QCparity
);
2541 tem
= Fplist_get (p
->childp
, QCparity
);
2542 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2543 error (":parity must be nil (no parity), `even', or `odd'");
2544 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2545 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2546 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2551 else if (EQ (tem
, Qeven
))
2554 attr
.c_cflag
|= PARENB
;
2555 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2557 else if (EQ (tem
, Qodd
))
2560 attr
.c_cflag
|= (PARENB
| PARODD
);
2561 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2564 /* Don't error on no parity, which should be set by cfmakeraw. */
2566 error ("Parity cannot be configured");
2568 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2570 /* Configure stopbits. */
2571 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2572 tem
= Fplist_get (contact
, QCstopbits
);
2574 tem
= Fplist_get (p
->childp
, QCstopbits
);
2576 tem
= make_number (1);
2578 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2579 error (":stopbits must be nil (1 stopbit), 1, or 2");
2580 summary
[2] = XINT (tem
) + '0';
2581 #if defined (CSTOPB)
2582 attr
.c_cflag
&= ~CSTOPB
;
2583 if (XINT (tem
) == 2)
2584 attr
.c_cflag
|= CSTOPB
;
2586 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2587 if (XINT (tem
) != 1)
2588 error ("Stopbits cannot be configured");
2590 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2592 /* Configure flowcontrol. */
2593 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2594 tem
= Fplist_get (contact
, QCflowcontrol
);
2596 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2597 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2598 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2599 #if defined (CRTSCTS)
2600 attr
.c_cflag
&= ~CRTSCTS
;
2602 #if defined (CNEW_RTSCTS)
2603 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2605 #if defined (IXON) && defined (IXOFF)
2606 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2610 /* Already configured. */
2612 else if (EQ (tem
, Qhw
))
2614 #if defined (CRTSCTS)
2615 attr
.c_cflag
|= CRTSCTS
;
2616 #elif defined (CNEW_RTSCTS)
2617 attr
.c_cflag
|= CNEW_RTSCTS
;
2619 error ("Hardware flowcontrol (RTS/CTS) not supported");
2622 else if (EQ (tem
, Qsw
))
2624 #if defined (IXON) && defined (IXOFF)
2625 attr
.c_iflag
|= (IXON
| IXOFF
);
2627 error ("Software flowcontrol (XON/XOFF) not supported");
2630 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2632 /* Activate configuration. */
2633 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2635 report_file_error ("Failed tcsetattr", Qnil
);
2637 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2638 pset_childp (p
, childp2
);
2640 #endif /* not DOS_NT */
2642 /* System depended enumeration of and access to system processes a-la ps(1). */
2646 /* Process enumeration and access via /proc. */
2649 list_system_processes (void)
2651 Lisp_Object procdir
, match
, proclist
, next
;
2652 struct gcpro gcpro1
, gcpro2
;
2653 register Lisp_Object tail
;
2655 GCPRO2 (procdir
, match
);
2656 /* For every process on the system, there's a directory in the
2657 "/proc" pseudo-directory whose name is the numeric ID of that
2659 procdir
= build_string ("/proc");
2660 match
= build_string ("[0-9]+");
2661 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2663 /* `proclist' gives process IDs as strings. Destructively convert
2664 each string into a number. */
2665 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2668 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2672 /* directory_files_internal returns the files in reverse order; undo
2674 proclist
= Fnreverse (proclist
);
2678 #elif defined DARWIN_OS || defined __FreeBSD__
2681 list_system_processes (void)
2684 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2686 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2689 struct kinfo_proc
*procs
;
2692 struct gcpro gcpro1
;
2693 Lisp_Object proclist
= Qnil
;
2695 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2698 procs
= xmalloc (len
);
2699 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2706 len
/= sizeof (struct kinfo_proc
);
2707 for (i
= 0; i
< len
; i
++)
2710 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2712 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2722 /* The WINDOWSNT implementation is in w32.c.
2723 The MSDOS implementation is in dosfns.c. */
2724 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2727 list_system_processes (void)
2732 #endif /* !defined (WINDOWSNT) */
2734 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2735 static struct timespec
2736 time_from_jiffies (unsigned long long tval
, long hz
)
2738 unsigned long long s
= tval
/ hz
;
2739 unsigned long long frac
= tval
% hz
;
2742 if (TYPE_MAXIMUM (time_t) < s
)
2744 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2745 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2746 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2749 /* This is reachable only in the unlikely case that HZ * HZ
2750 exceeds ULLONG_MAX. It calculates an approximation that is
2751 guaranteed to be in range. */
2752 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2753 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2754 ns
= frac
/ hz_per_ns
;
2757 return make_timespec (s
, ns
);
2761 ltime_from_jiffies (unsigned long long tval
, long hz
)
2763 struct timespec t
= time_from_jiffies (tval
, hz
);
2764 return make_lisp_time (t
);
2767 static struct timespec
2771 struct timespec up
= make_timespec (0, 0);
2774 fup
= emacs_fopen ("/proc/uptime", "r");
2778 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2779 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2781 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2782 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2783 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2786 if (TYPE_MAXIMUM (time_t) < upsec
)
2788 upsec
= TYPE_MAXIMUM (time_t);
2789 upfrac
= TIMESPEC_RESOLUTION
- 1;
2793 int upfraclen
= upfrac_end
- upfrac_start
;
2794 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2796 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2798 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2800 up
= make_timespec (upsec
, upfrac
);
2809 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2810 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2813 procfs_ttyname (int rdev
)
2816 char name
[PATH_MAX
];
2819 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2825 unsigned long minor_beg
, minor_end
;
2826 char minor
[25]; /* 2 32-bit numbers + dash */
2829 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2831 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2832 && major
== MAJOR (rdev
))
2834 minor_beg
= strtoul (minor
, &endp
, 0);
2836 minor_end
= minor_beg
;
2837 else if (*endp
== '-')
2838 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2842 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2844 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2852 return build_string (name
);
2856 procfs_get_total_memory (void)
2859 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2863 fmem
= emacs_fopen ("/proc/meminfo", "r");
2867 uintmax_t entry_value
;
2871 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
2874 retval
= entry_value
;
2879 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
2897 system_process_attributes (Lisp_Object pid
)
2899 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2903 long clocks_per_sec
;
2905 char procbuf
[1025], *p
, *q
;
2908 static char const default_cmd
[] = "???";
2909 const char *cmd
= default_cmd
;
2910 int cmdsize
= sizeof default_cmd
- 1;
2911 char *cmdline
= NULL
;
2912 ptrdiff_t cmdline_size
;
2915 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2918 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2919 long priority
, niceness
, rss
;
2920 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2921 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
2923 Lisp_Object attrs
= Qnil
;
2924 Lisp_Object cmd_str
, decoded_cmd
;
2926 struct gcpro gcpro1
, gcpro2
;
2928 CHECK_NUMBER_OR_FLOAT (pid
);
2929 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2930 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2931 if (stat (procfn
, &st
) < 0)
2934 GCPRO2 (attrs
, decoded_cmd
);
2938 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2940 pw
= getpwuid (uid
);
2943 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2946 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2948 gr
= getgrgid (gid
);
2951 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2953 count
= SPECPDL_INDEX ();
2954 strcpy (fn
, procfn
);
2955 procfn_end
= fn
+ strlen (fn
);
2956 strcpy (procfn_end
, "/stat");
2957 fd
= emacs_open (fn
, O_RDONLY
, 0);
2962 record_unwind_protect_int (close_file_unwind
, fd
);
2963 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
2967 procbuf
[nread
] = '\0';
2970 p
= strchr (p
, '(');
2973 q
= strrchr (p
+ 1, ')');
2983 /* Command name is encoded in locale-coding-system; decode it. */
2984 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2985 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2986 Vlocale_coding_system
, 0);
2987 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2989 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
2990 utime stime cutime cstime priority nice thcount . start vsize rss */
2992 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
2993 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
2994 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2995 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2996 &u_time
, &s_time
, &cutime
, &cstime
,
2997 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
3002 state_str
[1] = '\0';
3003 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3004 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
3005 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
3006 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
3007 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3008 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
3009 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3010 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3011 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3013 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3015 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3016 if (clocks_per_sec
< 0)
3017 clocks_per_sec
= 100;
3018 attrs
= Fcons (Fcons (Qutime
,
3019 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3021 attrs
= Fcons (Fcons (Qstime
,
3022 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3024 attrs
= Fcons (Fcons (Qtime
,
3025 ltime_from_jiffies (s_time
+ u_time
,
3028 attrs
= Fcons (Fcons (Qcutime
,
3029 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3031 attrs
= Fcons (Fcons (Qcstime
,
3032 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3034 attrs
= Fcons (Fcons (Qctime
,
3035 ltime_from_jiffies (cstime
+ cutime
,
3038 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3039 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3040 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3042 tnow
= current_timespec ();
3043 telapsed
= get_up_time ();
3044 tboot
= timespec_sub (tnow
, telapsed
);
3045 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3046 tstart
= timespec_add (tboot
, tstart
);
3047 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3048 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3050 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3051 telapsed
= timespec_sub (tnow
, tstart
);
3052 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3053 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3054 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3057 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3058 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3061 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3064 unbind_to (count
, Qnil
);
3067 strcpy (procfn_end
, "/cmdline");
3068 fd
= emacs_open (fn
, O_RDONLY
, 0);
3071 ptrdiff_t readsize
, nread_incr
;
3073 record_unwind_protect_int (close_file_unwind
, fd
);
3074 nread
= cmdline_size
= 0;
3078 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3080 /* Leave room even if every byte needs escaping below. */
3081 readsize
= (cmdline_size
>> 1) - nread
;
3083 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3084 nread
+= max (0, nread_incr
);
3086 while (nread_incr
== readsize
);
3090 /* We don't want trailing null characters. */
3091 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3094 /* Escape-quote whitespace and backslashes. */
3095 q
= cmdline
+ cmdline_size
;
3100 if (c_isspace (c
) || c
== '\\')
3104 nread
= cmdline
+ cmdline_size
- q
;
3109 nread
= cmdsize
+ 2;
3110 cmdline_size
= nread
+ 1;
3111 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3112 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3114 /* Command line is encoded in locale-coding-system; decode it. */
3115 cmd_str
= make_unibyte_string (q
, nread
);
3116 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3117 Vlocale_coding_system
, 0);
3119 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3126 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3128 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3129 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3130 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3131 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3132 #undef _FILE_OFFSET_BITS
3134 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3139 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3140 #define _FILE_OFFSET_BITS 64
3141 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3143 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3146 system_process_attributes (Lisp_Object pid
)
3148 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3153 struct psinfo pinfo
;
3159 Lisp_Object attrs
= Qnil
;
3160 Lisp_Object decoded_cmd
;
3161 struct gcpro gcpro1
, gcpro2
;
3164 CHECK_NUMBER_OR_FLOAT (pid
);
3165 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3166 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3167 if (stat (procfn
, &st
) < 0)
3170 GCPRO2 (attrs
, decoded_cmd
);
3174 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3176 pw
= getpwuid (uid
);
3179 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3182 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3184 gr
= getgrgid (gid
);
3187 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3189 count
= SPECPDL_INDEX ();
3190 strcpy (fn
, procfn
);
3191 procfn_end
= fn
+ strlen (fn
);
3192 strcpy (procfn_end
, "/psinfo");
3193 fd
= emacs_open (fn
, O_RDONLY
, 0);
3198 record_unwind_protect (close_file_unwind
, fd
);
3199 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3202 if (nread
== sizeof pinfo
)
3204 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3205 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3206 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3210 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3211 state_str
[1] = '\0';
3212 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3215 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3216 need to get a string from it. */
3218 /* FIXME: missing: Qtpgid */
3230 Are they available? */
3232 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3233 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3234 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3235 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3236 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3239 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3240 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3242 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3245 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3246 range 0 .. 2**15, representing 0.0 .. 1.0. */
3247 attrs
= Fcons (Fcons (Qpcpu
,
3248 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3250 attrs
= Fcons (Fcons (Qpmem
,
3251 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3254 decoded_cmd
= (code_convert_string_norecord
3255 (build_unibyte_string (pinfo
.pr_fname
),
3256 Vlocale_coding_system
, 0));
3257 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3258 decoded_cmd
= (code_convert_string_norecord
3259 (build_unibyte_string (pinfo
.pr_psargs
),
3260 Vlocale_coding_system
, 0));
3261 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3263 unbind_to (count
, Qnil
);
3268 #elif defined __FreeBSD__
3270 static struct timespec
3271 timeval_to_timespec (struct timeval t
)
3273 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3277 make_lisp_timeval (struct timeval t
)
3279 return make_lisp_time (timeval_to_timespec (t
));
3283 system_process_attributes (Lisp_Object pid
)
3286 int pagesize
= getpagesize ();
3287 unsigned long npages
;
3293 char args
[MAXPATHLEN
];
3294 struct timespec t
, now
;
3296 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3297 struct kinfo_proc proc
;
3298 size_t proclen
= sizeof proc
;
3300 struct gcpro gcpro1
, gcpro2
;
3301 Lisp_Object attrs
= Qnil
;
3302 Lisp_Object decoded_comm
;
3304 CHECK_NUMBER_OR_FLOAT (pid
);
3305 CONS_TO_INTEGER (pid
, int, proc_id
);
3308 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3311 GCPRO2 (attrs
, decoded_comm
);
3313 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3316 pw
= getpwuid (proc
.ki_uid
);
3319 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3321 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3324 gr
= getgrgid (proc
.ki_svgid
);
3327 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3329 decoded_comm
= (code_convert_string_norecord
3330 (build_unibyte_string (proc
.ki_comm
),
3331 Vlocale_coding_system
, 0));
3333 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3335 char state
[2] = {'\0', '\0'};
3336 switch (proc
.ki_stat
)
3358 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3361 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3362 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3363 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3366 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3369 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3371 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3372 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3373 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3374 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3375 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3377 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3379 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3381 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3382 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3383 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3385 attrs
= Fcons (Fcons (Qcutime
,
3386 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3388 attrs
= Fcons (Fcons (Qcstime
,
3389 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3391 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3392 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3393 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3395 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3397 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3398 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3399 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3400 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3401 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3404 now
= current_timespec ();
3405 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3406 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3408 len
= sizeof fscale
;
3409 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3414 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3416 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3417 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3418 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3422 len
= sizeof npages
;
3423 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3425 double pmem
= (proc
.ki_flag
& P_INMEM
3426 ? 100.0 * proc
.ki_rssize
/ npages
3428 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3431 mib
[2] = KERN_PROC_ARGS
;
3433 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3436 for (i
= 0; i
< len
; i
++)
3438 if (! args
[i
] && i
< len
- 1)
3443 (code_convert_string_norecord
3444 (build_unibyte_string (args
),
3445 Vlocale_coding_system
, 0));
3447 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3454 /* The WINDOWSNT implementation is in w32.c.
3455 The MSDOS implementation is in dosfns.c. */
3456 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3459 system_process_attributes (Lisp_Object pid
)
3464 #endif /* !defined (WINDOWSNT) */