1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2013 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/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
29 #endif /* HAVE_PWD_H */
37 #include "sysselect.h"
38 #include "blockinput.h"
40 #if defined DARWIN_OS || defined __FreeBSD__
41 # include <sys/sysctl.h>
45 /* Sparc/ARM machine/frame.h has 'struct frame' which conflicts with Emacs's
46 'struct frame', so rename it. */
47 # define frame freebsd_frame
48 # include <sys/user.h>
51 # include <sys/resource.h>
57 #define write sys_write
59 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
62 #endif /* not WINDOWSNT */
64 #include <sys/types.h>
68 /* Get SI_SRPC_DOMAIN, if it is available. */
69 #ifdef HAVE_SYS_SYSTEMINFO_H
70 #include <sys/systeminfo.h>
73 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
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 static void emacs_get_tty (int, struct emacs_tty
*);
111 static int emacs_set_tty (int, struct emacs_tty
*, bool);
113 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
115 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
118 /* Declare here, including term.h is problematic on some systems. */
119 extern void tputs (const char *, int, int (*)(int));
121 static const int baud_convert
[] =
123 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
124 1800, 2400, 4800, 9600, 19200, 38400
128 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
130 /* Return the current working directory. Returns NULL on errors.
131 Any other returned value must be freed with free. This is used
132 only when get_current_dir_name is not defined on the system. */
134 get_current_dir_name (void)
137 char *pwd
= getenv ("PWD");
138 struct stat dotstat
, pwdstat
;
139 /* If PWD is accurate, use it instead of calling getcwd. PWD is
140 sometimes a nicer name, and using it may avoid a fatal error if a
141 parent directory is searchable but not readable. */
143 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
144 && stat (pwd
, &pwdstat
) == 0
145 && stat (".", &dotstat
) == 0
146 && dotstat
.st_ino
== pwdstat
.st_ino
147 && dotstat
.st_dev
== pwdstat
.st_dev
149 && strlen (pwd
) < MAXPATHLEN
153 buf
= malloc (strlen (pwd
) + 1);
160 size_t buf_size
= 1024;
161 buf
= malloc (buf_size
);
166 if (getcwd (buf
, buf_size
) == buf
)
170 int tmp_errno
= errno
;
176 buf
= realloc (buf
, buf_size
);
186 /* Discard pending input on all input descriptors. */
189 discard_tty_input (void)
192 struct emacs_tty buf
;
197 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
198 while (dos_keyread () != -1)
200 #else /* not MSDOS */
202 struct tty_display_info
*tty
;
203 for (tty
= tty_list
; tty
; tty
= tty
->next
)
205 if (tty
->input
) /* Is the device suspended? */
207 emacs_get_tty (fileno (tty
->input
), &buf
);
208 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
212 #endif /* not MSDOS */
213 #endif /* not WINDOWSNT */
219 /* Arrange for character C to be read as the next input from
221 XXX What if we have multiple ttys?
227 if (! FRAME_TERMCAP_P (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
< sizeof baud_convert
/ sizeof baud_convert
[0]
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_emacs_time (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 * flush any pending output
342 * (may flush input as well; it does not matter the way we use it)
346 flush_pending_output (int channel
)
348 /* FIXME: maybe this function should be removed */
351 /* Set up the terminal at the other end of a pseudo-terminal that
352 we will be controlling an inferior through.
353 It should not echo or do line-editing, since that is done
354 in Emacs. No padding needed for insertion into an Emacs buffer. */
357 child_setup_tty (int out
)
362 emacs_get_tty (out
, &s
);
363 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
364 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
366 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
367 Some versions of GNU Hurd do not have FFDLY? */
369 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
370 /* No output delays */
372 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
373 /* No output delays */
376 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
377 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
379 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
382 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
385 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
387 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
388 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
389 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
390 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
393 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
396 #ifdef SIGNALS_VIA_CHARACTERS
397 /* the QUIT and INTR character are used in process_send_signal
398 so set them here to something useful. */
399 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
400 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
401 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
402 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
403 #endif /* not SIGNALS_VIA_CHARACTERS */
406 /* Also, PTY overloads NUL and BREAK.
407 don't ignore break, but don't signal either, so it looks like NUL. */
408 s
.main
.c_iflag
&= ~IGNBRK
;
409 s
.main
.c_iflag
&= ~BRKINT
;
410 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
411 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
412 would force it to 0377. That looks like duplicated code. */
413 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
416 /* We originally enabled ICANON (and set VEOF to 04), and then had
417 process.c send additional EOF chars to flush the output when faced
418 with long lines, but this leads to weird effects when the
419 subprocess has disabled ICANON and ends up seeing those spurious
420 extra EOFs. So we don't send EOFs any more in
421 process.c:send_process. First we tried to disable ICANON by
422 default, so if a subsprocess sets up ICANON, it's his problem (or
423 the Elisp package that talks to it) to deal with lines that are
424 too long. But this disables some features, such as the ability
425 to send EOF signals. So we re-enabled ICANON but there is no
426 more "send eof to flush" going on (which is wrong and unportable
427 in itself). The correct way to handle too much output is to
428 buffer what could not be written and then write it again when
429 select returns ok for writing. This has it own set of
430 problems. Write is now asynchronous, is that a problem? How much
431 do we buffer, and what do we do when that limit is reached? */
433 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
434 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
435 #if 0 /* These settings only apply to non-ICANON mode. */
436 s
.main
.c_cc
[VMIN
] = 1;
437 s
.main
.c_cc
[VTIME
] = 0;
440 emacs_set_tty (out
, &s
, 0);
441 #endif /* not WINDOWSNT */
443 #endif /* not MSDOS */
446 /* Record a signal code and the action for it. */
450 struct sigaction action
;
453 static void save_signal_handlers (struct save_signal
*);
454 static void restore_signal_handlers (struct save_signal
*);
456 /* Suspend the Emacs process; give terminal to its superior. */
464 /* On a system where suspending is not implemented,
465 instead fork a subshell and let it talk directly to the terminal
472 /* Fork a subshell. */
477 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
479 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
483 struct save_signal saved_handlers
[5];
485 unsigned char *volatile str_volatile
= 0;
489 saved_handlers
[0].code
= SIGINT
;
490 saved_handlers
[1].code
= SIGQUIT
;
491 saved_handlers
[2].code
= SIGTERM
;
493 saved_handlers
[3].code
= SIGIO
;
494 saved_handlers
[4].code
= 0;
496 saved_handlers
[3].code
= 0;
499 /* Mentioning current_buffer->buffer would mean including buffer.h,
500 which somehow wedges the hp compiler. So instead... */
502 dir
= intern ("default-directory");
503 if (NILP (Fboundp (dir
)))
505 dir
= Fsymbol_value (dir
);
509 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
510 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
512 memcpy (str
, SDATA (dir
), len
);
513 if (str
[len
- 1] != '/') str
[len
++] = '/';
519 save_signal_handlers (saved_handlers
);
523 error ("Can't spawn subshell");
530 #ifdef DOS_NT /* MW, Aug 1993 */
531 getcwd (oldwd
, sizeof oldwd
);
533 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
536 sh
= egetenv ("SHELL");
540 /* Use our buffer's default directory for the subshell. */
542 if (str
&& chdir ((char *) str
) != 0)
545 emacs_perror ((char *) str
);
546 _exit (EXIT_CANCELED
);
550 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
552 char *epwd
= getenv ("PWD");
553 char old_pwd
[MAXPATHLEN
+1+4];
555 /* If PWD is set, pass it with corrected value. */
558 strcpy (old_pwd
, epwd
);
559 if (str
[len
- 1] == '/')
561 setenv ("PWD", str
, 1);
564 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
566 putenv (old_pwd
); /* restore previous value */
568 #else /* not MSDOS */
570 /* Waits for process completion */
571 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
572 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
574 write (1, "Can't execute subshell", 22);
575 #else /* not WINDOWSNT */
576 execlp (sh
, sh
, (char *) 0);
578 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
579 #endif /* not WINDOWSNT */
580 #endif /* not MSDOS */
583 /* Do this now if we did not do it before. */
585 save_signal_handlers (saved_handlers
);
589 wait_for_termination (pid
, &status
, 0);
591 restore_signal_handlers (saved_handlers
);
595 save_signal_handlers (struct save_signal
*saved_handlers
)
597 while (saved_handlers
->code
)
599 struct sigaction action
;
600 emacs_sigaction_init (&action
, SIG_IGN
);
601 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
607 restore_signal_handlers (struct save_signal
*saved_handlers
)
609 while (saved_handlers
->code
)
611 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
617 static int old_fcntl_flags
[MAXDESC
];
624 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
625 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
626 interrupts_deferred
= 0;
634 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
647 sigemptyset (&unblocked
);
649 sigaddset (&unblocked
, SIGWINCH
);
651 sigaddset (&unblocked
, SIGIO
);
652 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
654 interrupts_deferred
= 0;
659 unrequest_sigio (void)
667 sigemptyset (&blocked
);
669 sigaddset (&blocked
, SIGWINCH
);
671 sigaddset (&blocked
, SIGIO
);
672 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
673 interrupts_deferred
= 1;
681 signal (SIGIO
, SIG_IGN
);
686 /* Saving and restoring the process group of Emacs's terminal. */
688 /* The process group of which Emacs was a member when it initially
691 If Emacs was in its own process group (i.e. inherited_pgroup ==
692 getpid ()), then we know we're running under a shell with job
693 control (Emacs would never be run as part of a pipeline).
696 If Emacs was not in its own process group, then we know we're
697 running under a shell (or a caller) that doesn't know how to
698 separate itself from Emacs (like sh). Emacs must be in its own
699 process group in order to receive SIGIO correctly. In this
700 situation, we put ourselves in our own pgroup, forcibly set the
701 tty's pgroup to our pgroup, and make sure to restore and reinstate
702 the tty's pgroup just like any other terminal setting. If
703 inherited_group was not the tty's pgroup, then we'll get a
704 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
705 it goes foreground in the future, which is what should happen. */
707 static pid_t inherited_pgroup
;
710 init_foreground_group (void)
712 pid_t pgrp
= getpgrp ();
713 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
716 /* Block and unblock SIGTTOU. */
719 block_tty_out_signal (void)
723 sigemptyset (&blocked
);
724 sigaddset (&blocked
, SIGTTOU
);
725 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
730 unblock_tty_out_signal (void)
733 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
737 /* Safely set a controlling terminal FD's process group to PGID.
738 If we are not in the foreground already, POSIX requires tcsetpgrp
739 to deliver a SIGTTOU signal, which would stop us. This is an
740 annoyance, so temporarily ignore the signal.
742 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
743 skip all this unless SIGTTOU is defined. */
745 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
749 block_tty_out_signal ();
750 tcsetpgrp (fd
, pgid
);
751 unblock_tty_out_signal ();
756 /* Split off the foreground process group to Emacs alone. When we are
757 in the foreground, but not started in our own process group,
758 redirect the tty device handle FD to point to our own process
759 group. FD must be the file descriptor of the controlling tty. */
761 narrow_foreground_group (int fd
)
763 if (inherited_pgroup
&& setpgid (0, 0) == 0)
764 tcsetpgrp_without_stopping (fd
, getpid ());
767 /* Set the tty to our original foreground group. */
769 widen_foreground_group (int fd
)
771 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
772 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
775 /* Getting and setting emacs_tty structures. */
777 /* Set *TC to the parameters associated with the terminal FD,
778 or clear it if the parameters are not available. */
780 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
782 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
784 /* We have those nifty POSIX tcmumbleattr functions. */
785 memset (&settings
->main
, 0, sizeof (settings
->main
));
786 tcgetattr (fd
, &settings
->main
);
791 /* Set the parameters of the tty on FD according to the contents of
792 *SETTINGS. If FLUSHP, discard input.
793 Return 0 if all went well, and -1 (setting errno) if anything failed. */
796 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
798 /* Set the primary parameters - baud rate, character size, etcetera. */
801 /* We have those nifty POSIX tcmumbleattr functions.
802 William J. Smith <wjs@wiis.wang.com> writes:
803 "POSIX 1003.1 defines tcsetattr to return success if it was
804 able to perform any of the requested actions, even if some
805 of the requested actions could not be performed.
806 We must read settings back to ensure tty setup properly.
807 AIX requires this to keep tty from hanging occasionally." */
808 /* This make sure that we don't loop indefinitely in here. */
809 for (i
= 0 ; i
< 10 ; i
++)
810 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
821 memset (&new, 0, sizeof (new));
822 /* Get the current settings, and see if they're what we asked for. */
823 tcgetattr (fd
, &new);
824 /* We cannot use memcmp on the whole structure here because under
825 * aix386 the termios structure has some reserved field that may
828 if ( new.c_iflag
== settings
->main
.c_iflag
829 && new.c_oflag
== settings
->main
.c_oflag
830 && new.c_cflag
== settings
->main
.c_cflag
831 && new.c_lflag
== settings
->main
.c_lflag
832 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
839 /* We have survived the tempest. */
846 static int old_fcntl_owner
[MAXDESC
];
847 #endif /* F_SETOWN */
849 /* This may also be defined in stdio,
850 but if so, this does no harm,
851 and using the same name avoids wasting the other one's space. */
854 unsigned char _sobuf
[BUFSIZ
+8];
859 /* Initialize the terminal mode on all tty devices that are currently
863 init_all_sys_modes (void)
865 struct tty_display_info
*tty
;
866 for (tty
= tty_list
; tty
; tty
= tty
->next
)
867 init_sys_modes (tty
);
870 /* Initialize the terminal mode on the given tty device. */
873 init_sys_modes (struct tty_display_info
*tty_out
)
875 struct emacs_tty tty
;
876 Lisp_Object terminal
;
878 Vtty_erase_char
= Qnil
;
883 if (!tty_out
->output
)
884 return; /* The tty is suspended. */
886 narrow_foreground_group (fileno (tty_out
->input
));
888 if (! tty_out
->old_tty
)
889 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
891 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
893 tty
= *tty_out
->old_tty
;
895 #if !defined (DOS_NT)
896 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
898 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
899 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
900 #ifdef INLCR /* I'm just being cautious,
901 since I can't check how widespread INLCR is--rms. */
902 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
905 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
907 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
908 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
910 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
912 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
913 if (tty_out
->flow_control
)
915 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
917 tty
.main
.c_iflag
&= ~IXANY
;
921 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
922 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
924 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
926 if (tty_out
->meta_key
)
928 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
929 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
933 XSETTERMINAL(terminal
, tty_out
->terminal
);
934 if (!NILP (Fcontrolling_tty_p (terminal
)))
936 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
937 /* Set up C-g for both SIGQUIT and SIGINT.
938 We don't know which we will get, but we handle both alike
939 so which one it really gives us does not matter. */
940 tty
.main
.c_cc
[VQUIT
] = quit_char
;
944 /* We normally don't get interrupt or quit signals from tty
945 devices other than our controlling terminal; therefore,
946 we must handle C-g as normal input. Unfortunately, this
947 means that the interrupt and quit feature must be
948 disabled on secondary ttys, or we would not even see the
951 Note that even though emacsclient could have special code
952 to pass SIGINT to Emacs, we should _not_ enable
953 interrupt/quit keys for emacsclient frames. This means
954 that we can't break out of loops in C code from a
955 secondary tty frame, but we can always decide what
956 display the C-g came from, which is more important from a
957 usability point of view. (Consider the case when two
958 people work together using the same Emacs instance.) */
959 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
960 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
962 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
963 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
965 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
970 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
973 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
975 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
976 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
979 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
982 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
983 #endif /* VREPRINT */
985 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
988 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
989 #endif /* VDISCARD */
991 if (tty_out
->flow_control
)
994 tty
.main
.c_cc
[VSTART
] = '\021';
997 tty
.main
.c_cc
[VSTOP
] = '\023';
1003 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1006 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1011 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1012 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1013 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1014 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1015 if (tty_out
->flow_control
)
1018 tty
.main
.c_cc
[VSTART
] = '\021';
1021 tty
.main
.c_cc
[VSTOP
] = '\023';
1024 /* Also, PTY overloads NUL and BREAK.
1025 don't ignore break, but don't signal either, so it looks like NUL.
1026 This really serves a purpose only if running in an XTERM window
1027 or via TELNET or the like, but does no harm elsewhere. */
1028 tty
.main
.c_iflag
&= ~IGNBRK
;
1029 tty
.main
.c_iflag
&= ~BRKINT
;
1031 #endif /* not DOS_NT */
1033 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1034 if (!tty_out
->term_initted
)
1035 internal_terminal_init ();
1036 dos_ttraw (tty_out
);
1039 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1041 /* This code added to insure that, if flow-control is not to be used,
1042 we have an unlocked terminal at the start. */
1045 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1048 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1051 #if !defined (DOS_NT)
1053 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1058 if (interrupt_input
)
1060 old_fcntl_owner
[fileno (tty_out
->input
)] =
1061 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1062 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1063 init_sigio (fileno (tty_out
->input
));
1065 if (gpm_tty
== tty_out
)
1067 /* Arrange for mouse events to give us SIGIO signals. */
1068 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1069 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1070 init_sigio (gpm_fd
);
1072 #endif /* HAVE_GPM */
1074 #endif /* F_GETOWN */
1077 /* This symbol is defined on recent USG systems.
1078 Someone says without this call USG won't really buffer the file
1079 even with a call to setbuf. */
1080 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1082 setbuf (tty_out
->output
, (char *) _sobuf
);
1085 if (tty_out
->terminal
->set_terminal_modes_hook
)
1086 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1088 if (!tty_out
->term_initted
)
1090 Lisp_Object tail
, frame
;
1091 FOR_EACH_FRAME (tail
, frame
)
1093 /* XXX This needs to be revised. */
1094 if (FRAME_TERMCAP_P (XFRAME (frame
))
1095 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1096 init_frame_faces (XFRAME (frame
));
1100 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1102 /* We used to call "direct_output_forward_char(0)" here,
1103 but it's not clear why, since it may not do anything anyway. */
1107 Lisp_Object tail
, frame
;
1109 FOR_EACH_FRAME (tail
, frame
)
1111 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1112 || FRAME_MSDOS_P (XFRAME (frame
)))
1113 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1114 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1118 tty_out
->term_initted
= 1;
1121 /* Return true if safe to use tabs in output.
1122 At the time this is called, init_sys_modes has not been done yet. */
1125 tabs_safe_p (int fd
)
1127 struct emacs_tty etty
;
1129 emacs_get_tty (fd
, &etty
);
1132 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1133 #else /* not TABDLY */
1135 #endif /* not TABDLY */
1141 /* Get terminal size from system.
1142 Store number of lines into *HEIGHTP and width into *WIDTHP.
1143 We store 0 if there's no valid information. */
1146 get_tty_size (int fd
, int *widthp
, int *heightp
)
1148 #if defined TIOCGWINSZ
1151 struct winsize size
;
1153 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1154 *widthp
= *heightp
= 0;
1157 *widthp
= size
.ws_col
;
1158 *heightp
= size
.ws_row
;
1161 #elif defined TIOCGSIZE
1163 /* SunOS - style. */
1164 struct ttysize size
;
1166 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1167 *widthp
= *heightp
= 0;
1170 *widthp
= size
.ts_cols
;
1171 *heightp
= size
.ts_lines
;
1174 #elif defined WINDOWSNT
1176 CONSOLE_SCREEN_BUFFER_INFO info
;
1177 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1179 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1180 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1183 *widthp
= *heightp
= 0;
1187 *widthp
= ScreenCols ();
1188 *heightp
= ScreenRows ();
1190 #else /* system doesn't know size */
1198 /* Set the logical window size associated with descriptor FD
1199 to HEIGHT and WIDTH. This is used mainly with ptys. */
1202 set_window_size (int fd
, int height
, int width
)
1207 struct winsize size
;
1208 size
.ws_row
= height
;
1209 size
.ws_col
= width
;
1211 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1212 return 0; /* error */
1219 /* SunOS - style. */
1220 struct ttysize size
;
1221 size
.ts_lines
= height
;
1222 size
.ts_cols
= width
;
1224 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1230 #endif /* not SunOS-style */
1231 #endif /* not BSD-style */
1236 /* Prepare all terminal devices for exiting Emacs. */
1239 reset_all_sys_modes (void)
1241 struct tty_display_info
*tty
;
1242 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1243 reset_sys_modes (tty
);
1246 /* Prepare the terminal for closing it; move the cursor to the
1247 bottom of the frame, turn off interrupt-driven I/O, etc. */
1250 reset_sys_modes (struct tty_display_info
*tty_out
)
1257 if (!tty_out
->term_initted
)
1260 if (!tty_out
->output
)
1261 return; /* The tty is suspended. */
1263 /* Go to and clear the last line of the terminal. */
1265 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1267 /* Code adapted from tty_clear_end_of_line. */
1268 if (tty_out
->TS_clr_line
)
1270 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1273 { /* have to do it the hard way */
1275 tty_turn_off_insert (tty_out
);
1277 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1279 fputc (' ', tty_out
->output
);
1283 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1284 fflush (tty_out
->output
);
1286 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1287 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1289 /* Avoid possible loss of output when changing terminal modes. */
1290 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1295 if (interrupt_input
)
1297 reset_sigio (fileno (tty_out
->input
));
1298 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1299 old_fcntl_owner
[fileno (tty_out
->input
)]);
1301 #endif /* F_SETOWN */
1302 fcntl (fileno (tty_out
->input
), F_SETFL
,
1303 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1306 if (tty_out
->old_tty
)
1307 while (emacs_set_tty (fileno (tty_out
->input
),
1308 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1311 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1315 widen_foreground_group (fileno (tty_out
->input
));
1320 /* Set up the proper status flags for use of a pty. */
1325 /* I'm told that TOICREMOTE does not mean control chars
1326 "can't be sent" but rather that they don't have
1327 input-editing or signaling effects.
1328 That should be good, because we have other ways
1329 to do those things in Emacs.
1330 However, telnet mode seems not to work on 4.2.
1331 So TIOCREMOTE is turned off now. */
1333 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1334 will hang. In particular, the "timeout" feature (which
1335 causes a read to return if there is no data available)
1336 does this. Also it is known that telnet mode will hang
1337 in such a way that Emacs must be stopped (perhaps this
1338 is the same problem).
1340 If TIOCREMOTE is turned off, then there is a bug in
1341 hp-ux which sometimes loses data. Apparently the
1342 code which blocks the master process when the internal
1343 buffer fills up does not work. Other than this,
1344 though, everything else seems to work fine.
1346 Since the latter lossage is more benign, we may as well
1347 lose that way. -- cph */
1349 #if defined (UNIX98_PTYS)
1352 ioctl (fd
, FIONBIO
, &on
);
1357 #endif /* HAVE_PTYS */
1360 #include <sys/socket.h>
1362 #endif /* HAVE_SOCKETS */
1365 #ifndef HAVE_H_ERRNO
1368 #endif /* TRY_AGAIN */
1371 init_system_name (void)
1373 #ifndef HAVE_GETHOSTNAME
1376 Vsystem_name
= build_string (uts
.nodename
);
1377 #else /* HAVE_GETHOSTNAME */
1378 char *hostname_alloc
= NULL
;
1379 char hostname_buf
[256];
1380 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1381 char *hostname
= hostname_buf
;
1383 /* Try to get the host name; if the buffer is too short, try
1384 again. Apparently, the only indication gethostname gives of
1385 whether the buffer was large enough is the presence or absence
1386 of a '\0' in the string. Eech. */
1389 gethostname (hostname
, hostname_size
- 1);
1390 hostname
[hostname_size
- 1] = '\0';
1392 /* Was the buffer large enough for the '\0'? */
1393 if (strlen (hostname
) < hostname_size
- 1)
1396 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1397 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1400 /* Turn the hostname into the official, fully-qualified hostname.
1401 Don't do this if we're going to dump; this can confuse system
1402 libraries on some machines and make the dumped emacs core dump. */
1405 #endif /* not CANNOT_DUMP */
1406 if (! strchr (hostname
, '.'))
1409 #ifdef HAVE_GETADDRINFO
1410 struct addrinfo
*res
;
1411 struct addrinfo hints
;
1414 memset (&hints
, 0, sizeof (hints
));
1415 hints
.ai_socktype
= SOCK_STREAM
;
1416 hints
.ai_flags
= AI_CANONNAME
;
1418 for (count
= 0;; count
++)
1420 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1421 || ret
!= EAI_AGAIN
)
1426 Fsleep_for (make_number (1), Qnil
);
1431 struct addrinfo
*it
= res
;
1434 char *fqdn
= it
->ai_canonname
;
1435 if (fqdn
&& strchr (fqdn
, '.')
1436 && strcmp (fqdn
, "localhost.localdomain") != 0)
1442 ptrdiff_t len
= strlen (it
->ai_canonname
);
1443 if (hostname_size
<= len
)
1445 hostname_size
= len
+ 1;
1446 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1449 strcpy (hostname
, it
->ai_canonname
);
1453 #else /* !HAVE_GETADDRINFO */
1455 for (count
= 0;; count
++)
1461 hp
= gethostbyname (hostname
);
1463 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1470 Fsleep_for (make_number (1), Qnil
);
1475 char *fqdn
= (char *) hp
->h_name
;
1477 if (!strchr (fqdn
, '.'))
1479 /* We still don't have a fully qualified domain name.
1480 Try to find one in the list of alternate names */
1481 char **alias
= hp
->h_aliases
;
1483 && (!strchr (*alias
, '.')
1484 || !strcmp (*alias
, "localhost.localdomain")))
1491 #endif /* !HAVE_GETADDRINFO */
1493 #endif /* HAVE_SOCKETS */
1494 Vsystem_name
= build_string (hostname
);
1495 xfree (hostname_alloc
);
1496 #endif /* HAVE_GETHOSTNAME */
1499 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1500 if (*p
== ' ' || *p
== '\t')
1505 sigset_t empty_mask
;
1507 static struct sigaction process_fatal_action
;
1510 emacs_sigaction_flags (void)
1513 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1514 'select') to reset their timeout on some platforms (e.g.,
1515 HP-UX 11), which is not what we want. Also, when Emacs is
1516 interactive, we don't want SA_RESTART because we need to poll
1517 for pending input so we need long-running syscalls to be interrupted
1518 after a signal that sets pending_signals.
1520 Non-interactive keyboard input goes through stdio, where we
1521 always want restartable system calls. */
1528 /* Store into *ACTION a signal action suitable for Emacs, with handler
1531 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1533 sigemptyset (&action
->sa_mask
);
1535 /* When handling a signal, block nonfatal system signals that are caught
1536 by Emacs. This makes race conditions less likely. */
1537 sigaddset (&action
->sa_mask
, SIGALRM
);
1538 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 if (! IEEE_FLOATING_POINT
)
1558 sigaddset (&action
->sa_mask
, SIGFPE
);
1560 action
->sa_handler
= handler
;
1561 action
->sa_flags
= emacs_sigaction_flags ();
1564 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1565 static pthread_t main_thread
;
1568 /* SIG has arrived at the current process. Deliver it to the main
1569 thread, which should handle it with HANDLER.
1571 If we are on the main thread, handle the signal SIG with HANDLER.
1572 Otherwise, redirect the signal to the main thread, blocking it from
1573 this thread. POSIX says any thread can receive a signal that is
1574 associated with a process, process group, or asynchronous event.
1575 On GNU/Linux that is not true, but for other systems (FreeBSD at
1578 deliver_process_signal (int sig
, signal_handler_t handler
)
1580 /* Preserve errno, to avoid race conditions with signal handlers that
1581 might change errno. Races can occur even in single-threaded hosts. */
1582 int old_errno
= errno
;
1584 bool on_main_thread
= true;
1585 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1586 if (! pthread_equal (pthread_self (), main_thread
))
1589 sigemptyset (&blocked
);
1590 sigaddset (&blocked
, sig
);
1591 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1592 pthread_kill (main_thread
, sig
);
1593 on_main_thread
= false;
1602 /* Static location to save a fatal backtrace in a thread.
1603 FIXME: If two subsidiary threads fail simultaneously, the resulting
1604 backtrace may be garbage. */
1605 enum { BACKTRACE_LIMIT_MAX
= 500 };
1606 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1607 static int thread_backtrace_npointers
;
1609 /* SIG has arrived at the current thread.
1610 If we are on the main thread, handle the signal SIG with HANDLER.
1611 Otherwise, this is a fatal error in the handling thread. */
1613 deliver_thread_signal (int sig
, signal_handler_t handler
)
1615 int old_errno
= errno
;
1617 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1618 if (! pthread_equal (pthread_self (), main_thread
))
1620 thread_backtrace_npointers
1621 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1622 sigaction (sig
, &process_fatal_action
, 0);
1623 pthread_kill (main_thread
, sig
);
1625 /* Avoid further damage while the main thread is exiting. */
1627 sigsuspend (&empty_mask
);
1635 #if !HAVE_DECL_SYS_SIGLIST
1637 # ifdef _sys_siglist
1638 # define sys_siglist _sys_siglist
1639 # elif HAVE_DECL___SYS_SIGLIST
1640 # define sys_siglist __sys_siglist
1642 # define sys_siglist my_sys_siglist
1643 static char const *sys_siglist
[NSIG
];
1648 # define sys_siglist_entries _sys_nsig
1650 # define sys_siglist_entries NSIG
1653 /* Handle bus errors, invalid instruction, etc. */
1655 handle_fatal_signal (int sig
)
1657 terminate_due_to_signal (sig
, 40);
1661 deliver_fatal_signal (int sig
)
1663 deliver_process_signal (sig
, handle_fatal_signal
);
1667 deliver_fatal_thread_signal (int sig
)
1669 deliver_thread_signal (sig
, handle_fatal_signal
);
1672 static _Noreturn
void
1673 handle_arith_signal (int sig
)
1675 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1676 xsignal0 (Qarith_error
);
1680 deliver_arith_signal (int sig
)
1682 deliver_thread_signal (sig
, handle_arith_signal
);
1687 /* Handler for SIGDANGER. */
1689 handle_danger_signal (int sig
)
1691 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1693 /* It might be unsafe to call do_auto_save now. */
1694 force_auto_save_soon ();
1698 deliver_danger_signal (int sig
)
1700 deliver_process_signal (sig
, handle_danger_signal
);
1704 /* Treat SIG as a terminating signal, unless it is already ignored and
1705 we are in --batch mode. Among other things, this makes nohup work. */
1707 maybe_fatal_sig (int sig
)
1709 bool catch_sig
= !noninteractive
;
1712 struct sigaction old_action
;
1713 sigaction (sig
, 0, &old_action
);
1714 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1717 sigaction (sig
, &process_fatal_action
, 0);
1721 init_signals (bool dumping
)
1723 struct sigaction thread_fatal_action
;
1724 struct sigaction action
;
1726 sigemptyset (&empty_mask
);
1728 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1729 main_thread
= pthread_self ();
1732 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1735 sys_siglist
[SIGABRT
] = "Aborted";
1737 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1739 sys_siglist
[SIGALRM
] = "Alarm clock";
1741 sys_siglist
[SIGBUS
] = "Bus error";
1743 sys_siglist
[SIGCHLD
] = "Child status changed";
1745 sys_siglist
[SIGCONT
] = "Continued";
1748 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1751 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1754 sys_siglist
[SIGEMT
] = "Emulation trap";
1756 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1758 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1761 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1763 sys_siglist
[SIGHUP
] = "Hangup";
1764 sys_siglist
[SIGILL
] = "Illegal instruction";
1765 sys_siglist
[SIGINT
] = "Interrupt";
1767 sys_siglist
[SIGIO
] = "I/O possible";
1770 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1773 sys_siglist
[SIGIOT
] = "IOT trap";
1775 sys_siglist
[SIGKILL
] = "Killed";
1777 sys_siglist
[SIGLOST
] = "Resource lost";
1780 sys_siglist
[SIGLWP
] = "SIGLWP";
1783 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1786 sys_siglist
[SIGWIND
] = "SIGPHONE";
1788 sys_siglist
[SIGPIPE
] = "Broken pipe";
1790 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1793 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1796 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1799 sys_siglist
[SIGPWR
] = "Power-fail restart";
1801 sys_siglist
[SIGQUIT
] = "Quit";
1803 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1806 sys_siglist
[SIGSAK
] = "Secure attention";
1808 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1810 sys_siglist
[SIGSOUND
] = "Sound completed";
1813 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1816 sys_siglist
[SIGSTP
] = "Stopped (user)";
1819 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1821 sys_siglist
[SIGTERM
] = "Terminated";
1823 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1826 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1829 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1832 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1835 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1838 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1841 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1844 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1847 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1850 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1853 sys_siglist
[SIGWINCH
] = "Window size changed";
1856 sys_siglist
[SIGWIND
] = "SIGWIND";
1859 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1862 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1865 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1867 /* Don't alter signal handlers if dumping. On some machines,
1868 changing signal handlers sets static data that would make signals
1869 fail to work right when the dumped Emacs is run. */
1873 sigfillset (&process_fatal_action
.sa_mask
);
1874 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1875 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1877 sigfillset (&thread_fatal_action
.sa_mask
);
1878 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1879 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1881 /* SIGINT may need special treatment on MS-Windows. See
1882 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1883 Please update the doc of kill-emacs, kill-emacs-hook, and
1884 NEWS if you change this. */
1886 maybe_fatal_sig (SIGHUP
);
1887 maybe_fatal_sig (SIGINT
);
1888 maybe_fatal_sig (SIGTERM
);
1890 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1891 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1892 to behave more like typical batch applications do. */
1893 if (! noninteractive
)
1894 signal (SIGPIPE
, SIG_IGN
);
1896 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1897 sigaction (SIGILL
, &thread_fatal_action
, 0);
1898 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1900 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1901 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1902 interpreter's floating point operations, so treat SIGFPE as an
1903 arith-error if it arises in the main thread. */
1904 if (IEEE_FLOATING_POINT
)
1905 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1908 emacs_sigaction_init (&action
, deliver_arith_signal
);
1909 sigaction (SIGFPE
, &action
, 0);
1913 add_user_signal (SIGUSR1
, "sigusr1");
1916 add_user_signal (SIGUSR2
, "sigusr2");
1918 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1920 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1923 sigaction (SIGORE
, &thread_fatal_action
, 0);
1926 sigaction (SIGUME
, &thread_fatal_action
, 0);
1929 sigaction (SIGDLK
, &process_fatal_action
, 0);
1932 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1935 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1938 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1941 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1943 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1945 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1947 sigaction (SIGTERM
, &process_fatal_action
, 0);
1949 signal (SIGPROF
, SIG_IGN
);
1952 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1955 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1958 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1962 /* This just means available memory is getting low. */
1963 emacs_sigaction_init (&action
, deliver_danger_signal
);
1964 sigaction (SIGDANGER
, &action
, 0);
1967 /* AIX-specific signals. */
1969 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1972 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1975 sigaction (SIGMSG
, &process_fatal_action
, 0);
1978 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1981 sigaction (SIGSAK
, &process_fatal_action
, 0);
1984 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1987 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1997 /* Figure out how many bits the system's random number generator uses.
1998 `random' and `lrand48' are assumed to return 31 usable bits.
1999 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2000 so we'll shift it and treat it like the 15-bit USG `rand'. */
2004 # define RAND_BITS 31
2005 # else /* !HAVE_RANDOM */
2006 # ifdef HAVE_LRAND48
2007 # define RAND_BITS 31
2008 # define random lrand48
2009 # else /* !HAVE_LRAND48 */
2010 # define RAND_BITS 15
2011 # if RAND_MAX == 32767
2012 # define random rand
2013 # else /* RAND_MAX != 32767 */
2014 # if RAND_MAX == 2147483647
2015 # define random() (rand () >> 16)
2016 # else /* RAND_MAX != 2147483647 */
2018 # define random rand
2020 # define random() (rand () >> 16)
2022 # endif /* RAND_MAX != 2147483647 */
2023 # endif /* RAND_MAX != 32767 */
2024 # endif /* !HAVE_LRAND48 */
2025 # endif /* !HAVE_RANDOM */
2026 #endif /* !RAND_BITS */
2029 seed_random (void *seed
, ptrdiff_t seed_size
)
2031 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2032 unsigned int arg
= 0;
2036 unsigned char *argp
= (unsigned char *) &arg
;
2037 unsigned char *seedp
= seed
;
2039 for (i
= 0; i
< seed_size
; i
++)
2040 argp
[i
% sizeof arg
] ^= seedp
[i
];
2044 # ifdef HAVE_LRAND48
2055 EMACS_TIME t
= current_emacs_time ();
2056 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2057 seed_random (&v
, sizeof v
);
2061 * Return a nonnegative random integer out of whatever we've got.
2062 * It contains enough bits to make a random (signed) Emacs fixnum.
2063 * This suffices even for a 64-bit architecture with a 15-bit rand.
2070 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2071 val
= (random () ^ (val
<< RAND_BITS
)
2072 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2073 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2074 return val
& INTMASK
;
2077 #ifndef HAVE_SNPRINTF
2078 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2080 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2082 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2083 ptrdiff_t nbytes
= size
- 1;
2088 va_start (ap
, format
);
2089 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2093 if (nbytes
== size
- 1)
2095 /* Calculate the length of the string that would have been created
2096 had the buffer been large enough. */
2097 char stackbuf
[4000];
2099 ptrdiff_t bsize
= sizeof stackbuf
;
2100 va_start (ap
, format
);
2101 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2107 if (INT_MAX
< nbytes
)
2120 /* If a backtrace is available, output the top lines of it to stderr.
2121 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2122 This function may be called from a signal handler, so it should
2123 not invoke async-unsafe functions like malloc. */
2125 emacs_backtrace (int backtrace_limit
)
2127 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2128 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2132 if (thread_backtrace_npointers
)
2134 buffer
= thread_backtrace_buffer
;
2135 npointers
= thread_backtrace_npointers
;
2139 buffer
= main_backtrace_buffer
;
2140 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2145 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2146 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2147 if (bounded_limit
< npointers
)
2148 emacs_write (STDERR_FILENO
, "...\n", 4);
2156 terminate_due_to_signal (SIGABRT
, 40);
2160 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2161 Arrange for subprograms to not inherit the file descriptor.
2162 Prefer a method that is multithread-safe, if available.
2163 Do not fail merely because the open was interrupted by a signal.
2164 Allow the user to quit. */
2167 emacs_open (const char *file
, int oflags
, int mode
)
2170 oflags
|= O_CLOEXEC
;
2171 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2173 if (! O_CLOEXEC
&& 0 <= fd
)
2174 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2178 /* Open FILE as a stream for Emacs use, with mode MODE.
2179 Act like emacs_open with respect to threads, signals, and quits. */
2182 emacs_fopen (char const *file
, char const *mode
)
2184 int fd
, omode
, oflags
;
2186 char const *m
= mode
;
2190 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2191 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2192 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2193 default: emacs_abort ();
2199 case '+': omode
= O_RDWR
; break;
2200 case 'b': bflag
= O_BINARY
; break;
2201 case 't': bflag
= O_TEXT
; break;
2202 default: /* Ignore. */ break;
2205 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2206 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2209 /* Create a pipe for Emacs use. */
2212 emacs_pipe (int fd
[2])
2214 int result
= pipe2 (fd
, O_CLOEXEC
);
2215 if (! O_CLOEXEC
&& result
== 0)
2217 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2218 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
, char *buf
, ptrdiff_t nbyte
)
2295 register ssize_t rtnval
;
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
, char 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
, char 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 (EMACS_TIME 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 EMACS_TIME atime
, EMACS_TIME 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
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
/ EMACS_TIME_RESOLUTION
2745 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2746 ns
= frac
* EMACS_TIME_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
/ EMACS_TIME_RESOLUTION
2753 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2754 ns
= frac
/ hz_per_ns
;
2757 return make_emacs_time (s
, ns
);
2761 ltime_from_jiffies (unsigned long long tval
, long hz
)
2763 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2764 return make_lisp_time (t
);
2771 EMACS_TIME up
= make_emacs_time (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
= EMACS_TIME_RESOLUTION
- 1;
2793 int upfraclen
= upfrac_end
- upfrac_start
;
2794 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2796 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2798 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2800 up
= make_emacs_time (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
);
2855 static unsigned long
2856 procfs_get_total_memory (void)
2859 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2862 fmem
= emacs_fopen ("/proc/meminfo", "r");
2866 unsigned long entry_value
;
2867 char entry_name
[20]; /* the longest I saw is 13+1 */
2869 while (!feof (fmem
) && !ferror (fmem
))
2871 if (fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
) >= 2
2872 && strcmp (entry_name
, "MemTotal:") == 0)
2874 retval
= entry_value
;
2885 system_process_attributes (Lisp_Object pid
)
2887 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2891 long clocks_per_sec
;
2893 char procbuf
[1025], *p
, *q
;
2896 static char const default_cmd
[] = "???";
2897 const char *cmd
= default_cmd
;
2898 int cmdsize
= sizeof default_cmd
- 1;
2899 char *cmdline
= NULL
;
2900 ptrdiff_t cmdline_size
;
2903 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2906 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2907 long priority
, niceness
, rss
;
2908 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2909 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2911 Lisp_Object attrs
= Qnil
;
2912 Lisp_Object cmd_str
, decoded_cmd
;
2914 struct gcpro gcpro1
, gcpro2
;
2916 CHECK_NUMBER_OR_FLOAT (pid
);
2917 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2918 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2919 if (stat (procfn
, &st
) < 0)
2922 GCPRO2 (attrs
, decoded_cmd
);
2926 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2928 pw
= getpwuid (uid
);
2931 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2934 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2936 gr
= getgrgid (gid
);
2939 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2941 count
= SPECPDL_INDEX ();
2942 strcpy (fn
, procfn
);
2943 procfn_end
= fn
+ strlen (fn
);
2944 strcpy (procfn_end
, "/stat");
2945 fd
= emacs_open (fn
, O_RDONLY
, 0);
2950 record_unwind_protect_int (close_file_unwind
, fd
);
2951 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
2955 procbuf
[nread
] = '\0';
2958 p
= strchr (p
, '(');
2961 q
= strrchr (p
+ 1, ')');
2971 /* Command name is encoded in locale-coding-system; decode it. */
2972 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2973 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2974 Vlocale_coding_system
, 0);
2975 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2977 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
2978 utime stime cutime cstime priority nice thcount . start vsize rss */
2980 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
2981 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
2982 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2983 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2984 &u_time
, &s_time
, &cutime
, &cstime
,
2985 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
2990 state_str
[1] = '\0';
2991 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
2992 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
2993 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
2994 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
2995 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2996 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
2997 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2998 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2999 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3001 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3003 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3004 if (clocks_per_sec
< 0)
3005 clocks_per_sec
= 100;
3006 attrs
= Fcons (Fcons (Qutime
,
3007 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3009 attrs
= Fcons (Fcons (Qstime
,
3010 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3012 attrs
= Fcons (Fcons (Qtime
,
3013 ltime_from_jiffies (s_time
+ u_time
,
3016 attrs
= Fcons (Fcons (Qcutime
,
3017 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3019 attrs
= Fcons (Fcons (Qcstime
,
3020 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3022 attrs
= Fcons (Fcons (Qctime
,
3023 ltime_from_jiffies (cstime
+ cutime
,
3026 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3027 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3028 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3030 tnow
= current_emacs_time ();
3031 telapsed
= get_up_time ();
3032 tboot
= sub_emacs_time (tnow
, telapsed
);
3033 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3034 tstart
= add_emacs_time (tboot
, tstart
);
3035 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3036 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3038 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3039 telapsed
= sub_emacs_time (tnow
, tstart
);
3040 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3041 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3042 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
3043 / EMACS_TIME_TO_DOUBLE (telapsed
));
3046 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3047 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3050 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3053 unbind_to (count
, Qnil
);
3056 strcpy (procfn_end
, "/cmdline");
3057 fd
= emacs_open (fn
, O_RDONLY
, 0);
3060 ptrdiff_t readsize
, nread_incr
;
3061 record_unwind_protect_int (close_file_unwind
, fd
);
3062 record_unwind_protect_nothing ();
3063 nread
= cmdline_size
= 0;
3067 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3068 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3070 /* Leave room even if every byte needs escaping below. */
3071 readsize
= (cmdline_size
>> 1) - nread
;
3073 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3074 nread
+= max (0, nread_incr
);
3076 while (nread_incr
== readsize
);
3080 /* We don't want trailing null characters. */
3081 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3084 /* Escape-quote whitespace and backslashes. */
3085 q
= cmdline
+ cmdline_size
;
3090 if (c_isspace (c
) || c
== '\\')
3094 nread
= cmdline
+ cmdline_size
- q
;
3099 nread
= cmdsize
+ 2;
3100 cmdline_size
= nread
+ 1;
3101 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3102 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3103 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3105 /* Command line is encoded in locale-coding-system; decode it. */
3106 cmd_str
= make_unibyte_string (q
, nread
);
3107 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3108 Vlocale_coding_system
, 0);
3109 unbind_to (count
, Qnil
);
3110 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3117 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3119 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3120 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3121 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3122 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3123 #undef _FILE_OFFSET_BITS
3125 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3130 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3131 #define _FILE_OFFSET_BITS 64
3132 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3134 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3137 system_process_attributes (Lisp_Object pid
)
3139 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3144 struct psinfo pinfo
;
3150 Lisp_Object attrs
= Qnil
;
3151 Lisp_Object decoded_cmd
;
3152 struct gcpro gcpro1
, gcpro2
;
3155 CHECK_NUMBER_OR_FLOAT (pid
);
3156 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3157 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3158 if (stat (procfn
, &st
) < 0)
3161 GCPRO2 (attrs
, decoded_cmd
);
3165 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3167 pw
= getpwuid (uid
);
3170 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3173 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3175 gr
= getgrgid (gid
);
3178 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3180 count
= SPECPDL_INDEX ();
3181 strcpy (fn
, procfn
);
3182 procfn_end
= fn
+ strlen (fn
);
3183 strcpy (procfn_end
, "/psinfo");
3184 fd
= emacs_open (fn
, O_RDONLY
, 0);
3189 record_unwind_protect (close_file_unwind
, fd
);
3190 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3193 if (nread
== sizeof pinfo
)
3195 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3196 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3197 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3201 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3202 state_str
[1] = '\0';
3203 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3206 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3207 need to get a string from it. */
3209 /* FIXME: missing: Qtpgid */
3221 Are they available? */
3223 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3224 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3225 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3226 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3227 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3230 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3231 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3233 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3236 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3237 range 0 .. 2**15, representing 0.0 .. 1.0. */
3238 attrs
= Fcons (Fcons (Qpcpu
,
3239 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3241 attrs
= Fcons (Fcons (Qpmem
,
3242 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3245 decoded_cmd
= (code_convert_string_norecord
3246 (make_unibyte_string (pinfo
.pr_fname
,
3247 strlen (pinfo
.pr_fname
)),
3248 Vlocale_coding_system
, 0));
3249 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3250 decoded_cmd
= (code_convert_string_norecord
3251 (make_unibyte_string (pinfo
.pr_psargs
,
3252 strlen (pinfo
.pr_psargs
)),
3253 Vlocale_coding_system
, 0));
3254 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3256 unbind_to (count
, Qnil
);
3261 #elif defined __FreeBSD__
3264 timeval_to_EMACS_TIME (struct timeval t
)
3266 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3270 make_lisp_timeval (struct timeval t
)
3272 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3276 system_process_attributes (Lisp_Object pid
)
3279 int pagesize
= getpagesize ();
3286 char args
[MAXPATHLEN
];
3289 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3290 struct kinfo_proc proc
;
3291 size_t proclen
= sizeof proc
;
3293 struct gcpro gcpro1
, gcpro2
;
3294 Lisp_Object attrs
= Qnil
;
3295 Lisp_Object decoded_comm
;
3297 CHECK_NUMBER_OR_FLOAT (pid
);
3298 CONS_TO_INTEGER (pid
, int, proc_id
);
3301 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3304 GCPRO2 (attrs
, decoded_comm
);
3306 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3309 pw
= getpwuid (proc
.ki_uid
);
3312 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3314 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3317 gr
= getgrgid (proc
.ki_svgid
);
3320 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3322 decoded_comm
= code_convert_string_norecord
3323 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3324 Vlocale_coding_system
, 0);
3326 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3328 char state
[2] = {'\0', '\0'};
3329 switch (proc
.ki_stat
)
3351 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3354 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3355 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3356 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3359 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3362 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3364 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3365 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3366 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3367 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3368 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3370 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3372 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3374 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3375 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3376 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3378 attrs
= Fcons (Fcons (Qcutime
,
3379 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3381 attrs
= Fcons (Fcons (Qcstime
,
3382 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3384 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3385 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3386 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3388 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3390 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3391 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3392 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3393 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3394 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3397 now
= current_emacs_time ();
3398 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3399 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3401 len
= sizeof fscale
;
3402 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3407 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3409 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3410 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3411 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3415 len
= sizeof npages
;
3416 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3418 double pmem
= (proc
.ki_flag
& P_INMEM
3419 ? 100.0 * proc
.ki_rssize
/ npages
3421 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3424 mib
[2] = KERN_PROC_ARGS
;
3426 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3429 for (i
= 0; i
< len
; i
++)
3431 if (! args
[i
] && i
< len
- 1)
3436 (code_convert_string_norecord
3437 (build_unibyte_string (args
),
3438 Vlocale_coding_system
, 0));
3440 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3447 /* The WINDOWSNT implementation is in w32.c.
3448 The MSDOS implementation is in dosfns.c. */
3449 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3452 system_process_attributes (Lisp_Object pid
)
3457 #endif /* !defined (WINDOWSNT) */