1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2012
3 Free Software Foundation, Inc.
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 */
33 #include <allocator.h>
35 #include <careadlinkat.h>
36 #include <ignore-value.h>
40 #include "sysselect.h"
41 #include "blockinput.h"
44 #include <sys/param.h>
45 #include <sys/sysctl.h>
50 #include <sys/resource.h>
56 #define write sys_write
58 #endif /* not WINDOWSNT */
60 #include <sys/types.h>
64 /* Get SI_SRPC_DOMAIN, if it is available. */
65 #ifdef HAVE_SYS_SYSTEMINFO_H
66 #include <sys/systeminfo.h>
69 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
71 #include <sys/param.h>
80 #ifdef HAVE_SYS_UTSNAME_H
81 #include <sys/utsname.h>
83 #endif /* HAVE_SYS_UTSNAME_H */
88 #include "termhooks.h"
91 #include "dispextern.h"
93 #include "cm.h" /* for reset_sys_modes */
97 /* In process.h which conflicts with the local copy. */
99 int _cdecl
_spawnlp (int, const char *, const char *, ...);
100 int _cdecl
_getpid (void);
101 extern char *getwd (char *);
104 #include "syssignal.h"
107 static int emacs_get_tty (int, struct emacs_tty
*);
108 static int emacs_set_tty (int, struct emacs_tty
*, int);
110 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
112 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
115 /* Declare here, including term.h is problematic on some systems. */
116 extern void tputs (const char *, int, int (*)(int));
118 static const int baud_convert
[] =
120 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
121 1800, 2400, 4800, 9600, 19200, 38400
125 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
127 /* Return the current working directory. Returns NULL on errors.
128 Any other returned value must be freed with free. This is used
129 only when get_current_dir_name is not defined on the system. */
131 get_current_dir_name (void)
135 struct stat dotstat
, pwdstat
;
136 /* If PWD is accurate, use it instead of calling getwd. PWD is
137 sometimes a nicer name, and using it may avoid a fatal error if a
138 parent directory is searchable but not readable. */
139 if ((pwd
= getenv ("PWD")) != 0
140 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
141 && stat (pwd
, &pwdstat
) == 0
142 && stat (".", &dotstat
) == 0
143 && dotstat
.st_ino
== pwdstat
.st_ino
144 && dotstat
.st_dev
== pwdstat
.st_dev
146 && strlen (pwd
) < MAXPATHLEN
150 buf
= malloc (strlen (pwd
) + 1);
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
);
182 /* We need MAXPATHLEN here. */
183 buf
= malloc (MAXPATHLEN
+ 1);
186 if (getwd (buf
) == NULL
)
188 int tmp_errno
= errno
;
200 /* Discard pending input on all input descriptors. */
203 discard_tty_input (void)
206 struct emacs_tty buf
;
211 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
212 while (dos_keyread () != -1)
214 #else /* not MSDOS */
216 struct tty_display_info
*tty
;
217 for (tty
= tty_list
; tty
; tty
= tty
->next
)
219 if (tty
->input
) /* Is the device suspended? */
221 emacs_get_tty (fileno (tty
->input
), &buf
);
222 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
226 #endif /* not MSDOS */
227 #endif /* not WINDOWSNT */
233 /* Arrange for character C to be read as the next input from
235 XXX What if we have multiple ttys?
241 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
244 /* Should perhaps error if in batch mode */
246 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
247 #else /* no TIOCSTI */
248 error ("Cannot stuff terminal input characters in this version of Unix");
249 #endif /* no TIOCSTI */
255 init_baud_rate (int fd
)
265 #else /* not DOS_NT */
270 emacs_ospeed
= cfgetospeed (&sg
);
271 #endif /* not DOS_NT */
274 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
275 ? baud_convert
[emacs_ospeed
] : 9600);
282 /* Set nonzero to make following function work under dbx
283 (at least for bsd). */
284 int wait_debugging EXTERNALLY_VISIBLE
;
289 wait_for_termination_1 (pid_t pid
, int interruptible
)
293 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
294 /* Note that kill returns -1 even if the process is just a zombie now.
295 But inevitably a SIGCHLD interrupt should be generated
296 and child_sig will do waitpid and make the process go away. */
297 /* There is some indication that there is a bug involved with
298 termination of subprocesses, perhaps involving a kernel bug too,
299 but no idea what it is. Just as a hunch we signal SIGCHLD to see
300 if that causes the problem to go away or get worse. */
301 sigset_t sigchild_mask
;
302 sigemptyset (&sigchild_mask
);
303 sigaddset (&sigchild_mask
, SIGCHLD
);
304 pthread_sigmask (SIG_SETMASK
, &sigchild_mask
, 0);
306 if (0 > kill (pid
, 0))
308 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
309 kill (getpid (), SIGCHLD
);
315 sigsuspend (&empty_mask
);
316 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
320 #else /* not WINDOWSNT */
322 sigemptyset (&blocked
);
323 sigaddset (&blocked
, SIGCHLD
);
324 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
326 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
328 pthread_sigmask (SIG_UNBLOCK
, &blocked
, 0);
332 sigsuspend (&empty_mask
);
333 #endif /* not WINDOWSNT */
334 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
340 /* Wait for subprocess with process id `pid' to terminate and
341 make sure it will get eliminated (not remain forever as a zombie) */
344 wait_for_termination (pid_t pid
)
346 wait_for_termination_1 (pid
, 0);
349 /* Like the above, but allow keyboard interruption. */
351 interruptible_wait_for_termination (pid_t pid
)
353 wait_for_termination_1 (pid
, 1);
357 * flush any pending output
358 * (may flush input as well; it does not matter the way we use it)
362 flush_pending_output (int channel
)
364 /* FIXME: maybe this function should be removed */
367 /* Set up the terminal at the other end of a pseudo-terminal that
368 we will be controlling an inferior through.
369 It should not echo or do line-editing, since that is done
370 in Emacs. No padding needed for insertion into an Emacs buffer. */
373 child_setup_tty (int out
)
378 emacs_get_tty (out
, &s
);
379 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
380 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
382 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
383 Some versions of GNU Hurd do not have FFDLY? */
385 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
386 /* No output delays */
388 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
389 /* No output delays */
392 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
393 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
395 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
398 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
401 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
403 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
404 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
405 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
406 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
409 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
412 #ifdef SIGNALS_VIA_CHARACTERS
413 /* the QUIT and INTR character are used in process_send_signal
414 so set them here to something useful. */
415 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
416 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
417 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
418 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
419 #endif /* not SIGNALS_VIA_CHARACTERS */
422 /* Also, PTY overloads NUL and BREAK.
423 don't ignore break, but don't signal either, so it looks like NUL. */
424 s
.main
.c_iflag
&= ~IGNBRK
;
425 s
.main
.c_iflag
&= ~BRKINT
;
426 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
427 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
428 would force it to 0377. That looks like duplicated code. */
429 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
432 /* We originally enabled ICANON (and set VEOF to 04), and then had
433 process.c send additional EOF chars to flush the output when faced
434 with long lines, but this leads to weird effects when the
435 subprocess has disabled ICANON and ends up seeing those spurious
436 extra EOFs. So we don't send EOFs any more in
437 process.c:send_process. First we tried to disable ICANON by
438 default, so if a subsprocess sets up ICANON, it's his problem (or
439 the Elisp package that talks to it) to deal with lines that are
440 too long. But this disables some features, such as the ability
441 to send EOF signals. So we re-enabled ICANON but there is no
442 more "send eof to flush" going on (which is wrong and unportable
443 in itself). The correct way to handle too much output is to
444 buffer what could not be written and then write it again when
445 select returns ok for writing. This has it own set of
446 problems. Write is now asynchronous, is that a problem? How much
447 do we buffer, and what do we do when that limit is reached? */
449 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
450 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
451 #if 0 /* These settings only apply to non-ICANON mode. */
452 s
.main
.c_cc
[VMIN
] = 1;
453 s
.main
.c_cc
[VTIME
] = 0;
456 emacs_set_tty (out
, &s
, 0);
457 #endif /* not WINDOWSNT */
459 #endif /* not MSDOS */
462 /* Record a signal code and the action for it. */
466 struct sigaction action
;
469 static void save_signal_handlers (struct save_signal
*);
470 static void restore_signal_handlers (struct save_signal
*);
472 /* Suspend the Emacs process; give terminal to its superior. */
477 #if defined (SIGTSTP) && !defined (MSDOS)
480 int pgrp
= EMACS_GETPGRP (0);
481 EMACS_KILLPG (pgrp
, SIGTSTP
);
484 #else /* No SIGTSTP */
485 /* On a system where suspending is not implemented,
486 instead fork a subshell and let it talk directly to the terminal
490 #endif /* no SIGTSTP */
493 /* Fork a subshell. */
498 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
500 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
503 struct save_signal saved_handlers
[5];
505 unsigned char *volatile str_volatile
= 0;
509 saved_handlers
[0].code
= SIGINT
;
510 saved_handlers
[1].code
= SIGQUIT
;
511 saved_handlers
[2].code
= SIGTERM
;
513 saved_handlers
[3].code
= SIGIO
;
514 saved_handlers
[4].code
= 0;
516 saved_handlers
[3].code
= 0;
519 /* Mentioning current_buffer->buffer would mean including buffer.h,
520 which somehow wedges the hp compiler. So instead... */
522 dir
= intern ("default-directory");
523 if (NILP (Fboundp (dir
)))
525 dir
= Fsymbol_value (dir
);
529 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
530 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
532 memcpy (str
, SDATA (dir
), len
);
533 if (str
[len
- 1] != '/') str
[len
++] = '/';
539 save_signal_handlers (saved_handlers
);
540 synch_process_alive
= 1;
544 error ("Can't spawn subshell");
551 #ifdef DOS_NT /* MW, Aug 1993 */
554 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
557 sh
= (char *) egetenv ("SHELL");
561 /* Use our buffer's default directory for the subshell. */
563 if (str
&& chdir ((char *) str
) != 0)
566 ignore_value (write (1, "Can't chdir\n", 12));
571 close_process_descs (); /* Close Emacs's pipes/ptys */
573 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
575 char *epwd
= getenv ("PWD");
576 char old_pwd
[MAXPATHLEN
+1+4];
578 /* If PWD is set, pass it with corrected value. */
581 strcpy (old_pwd
, epwd
);
582 if (str
[len
- 1] == '/')
584 setenv ("PWD", str
, 1);
587 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
589 putenv (old_pwd
); /* restore previous value */
591 #else /* not MSDOS */
593 /* Waits for process completion */
594 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
595 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
597 write (1, "Can't execute subshell", 22);
598 #else /* not WINDOWSNT */
599 execlp (sh
, sh
, (char *) 0);
600 ignore_value (write (1, "Can't execute subshell", 22));
602 #endif /* not WINDOWSNT */
603 #endif /* not MSDOS */
606 /* Do this now if we did not do it before. */
608 save_signal_handlers (saved_handlers
);
609 synch_process_alive
= 1;
613 wait_for_termination (pid
);
615 restore_signal_handlers (saved_handlers
);
616 synch_process_alive
= 0;
620 save_signal_handlers (struct save_signal
*saved_handlers
)
622 while (saved_handlers
->code
)
624 struct sigaction action
;
625 emacs_sigaction_init (&action
, SIG_IGN
);
626 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
632 restore_signal_handlers (struct save_signal
*saved_handlers
)
634 while (saved_handlers
->code
)
636 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
642 static int old_fcntl_flags
[MAXDESC
];
649 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
650 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
651 interrupts_deferred
= 0;
659 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
672 sigemptyset (&unblocked
);
674 sigaddset (&unblocked
, SIGWINCH
);
676 sigaddset (&unblocked
, SIGIO
);
677 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
679 interrupts_deferred
= 0;
684 unrequest_sigio (void)
692 sigemptyset (&blocked
);
694 sigaddset (&blocked
, SIGWINCH
);
696 sigaddset (&blocked
, SIGIO
);
697 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
698 interrupts_deferred
= 1;
706 signal (SIGIO
, SIG_IGN
);
711 /* Getting and setting emacs_tty structures. */
713 /* Set *TC to the parameters associated with the terminal FD.
714 Return zero if all's well, or -1 if we ran into an error we
715 couldn't deal with. */
717 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
719 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
721 /* We have those nifty POSIX tcmumbleattr functions. */
722 memset (&settings
->main
, 0, sizeof (settings
->main
));
723 if (tcgetattr (fd
, &settings
->main
) < 0)
727 /* We have survived the tempest. */
732 /* Set the parameters of the tty on FD according to the contents of
733 *SETTINGS. If FLUSHP is non-zero, we discard input.
734 Return 0 if all went well, and -1 if anything failed. */
737 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
739 /* Set the primary parameters - baud rate, character size, etcetera. */
742 /* We have those nifty POSIX tcmumbleattr functions.
743 William J. Smith <wjs@wiis.wang.com> writes:
744 "POSIX 1003.1 defines tcsetattr to return success if it was
745 able to perform any of the requested actions, even if some
746 of the requested actions could not be performed.
747 We must read settings back to ensure tty setup properly.
748 AIX requires this to keep tty from hanging occasionally." */
749 /* This make sure that we don't loop indefinitely in here. */
750 for (i
= 0 ; i
< 10 ; i
++)
751 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
762 memset (&new, 0, sizeof (new));
763 /* Get the current settings, and see if they're what we asked for. */
764 tcgetattr (fd
, &new);
765 /* We cannot use memcmp on the whole structure here because under
766 * aix386 the termios structure has some reserved field that may
769 if ( new.c_iflag
== settings
->main
.c_iflag
770 && new.c_oflag
== settings
->main
.c_oflag
771 && new.c_cflag
== settings
->main
.c_cflag
772 && new.c_lflag
== settings
->main
.c_lflag
773 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
780 /* We have survived the tempest. */
787 static int old_fcntl_owner
[MAXDESC
];
788 #endif /* F_SETOWN */
790 /* This may also be defined in stdio,
791 but if so, this does no harm,
792 and using the same name avoids wasting the other one's space. */
795 unsigned char _sobuf
[BUFSIZ
+8];
800 /* Initialize the terminal mode on all tty devices that are currently
804 init_all_sys_modes (void)
806 struct tty_display_info
*tty
;
807 for (tty
= tty_list
; tty
; tty
= tty
->next
)
808 init_sys_modes (tty
);
811 /* Initialize the terminal mode on the given tty device. */
814 init_sys_modes (struct tty_display_info
*tty_out
)
816 struct emacs_tty tty
;
817 Lisp_Object terminal
;
819 Vtty_erase_char
= Qnil
;
824 if (!tty_out
->output
)
825 return; /* The tty is suspended. */
827 if (! tty_out
->old_tty
)
828 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
830 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
832 tty
= *tty_out
->old_tty
;
834 #if !defined (DOS_NT)
835 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
837 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
838 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
839 #ifdef INLCR /* I'm just being cautious,
840 since I can't check how widespread INLCR is--rms. */
841 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
844 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
846 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
847 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
849 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
851 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
852 if (tty_out
->flow_control
)
854 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
856 tty
.main
.c_iflag
&= ~IXANY
;
860 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
861 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
863 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
865 if (tty_out
->meta_key
)
867 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
868 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
872 XSETTERMINAL(terminal
, tty_out
->terminal
);
873 if (!NILP (Fcontrolling_tty_p (terminal
)))
875 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
876 /* Set up C-g for both SIGQUIT and SIGINT.
877 We don't know which we will get, but we handle both alike
878 so which one it really gives us does not matter. */
879 tty
.main
.c_cc
[VQUIT
] = quit_char
;
883 /* We normally don't get interrupt or quit signals from tty
884 devices other than our controlling terminal; therefore,
885 we must handle C-g as normal input. Unfortunately, this
886 means that the interrupt and quit feature must be
887 disabled on secondary ttys, or we would not even see the
890 Note that even though emacsclient could have special code
891 to pass SIGINT to Emacs, we should _not_ enable
892 interrupt/quit keys for emacsclient frames. This means
893 that we can't break out of loops in C code from a
894 secondary tty frame, but we can always decide what
895 display the C-g came from, which is more important from a
896 usability point of view. (Consider the case when two
897 people work together using the same Emacs instance.) */
898 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
899 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
901 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
902 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
904 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
909 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
912 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
914 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
915 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
918 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
921 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
922 #endif /* VREPRINT */
924 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
927 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
928 #endif /* VDISCARD */
930 if (tty_out
->flow_control
)
933 tty
.main
.c_cc
[VSTART
] = '\021';
936 tty
.main
.c_cc
[VSTOP
] = '\023';
942 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
945 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
950 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
951 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
952 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
953 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
954 if (tty_out
->flow_control
)
957 tty
.main
.c_cc
[VSTART
] = '\021';
960 tty
.main
.c_cc
[VSTOP
] = '\023';
963 /* Also, PTY overloads NUL and BREAK.
964 don't ignore break, but don't signal either, so it looks like NUL.
965 This really serves a purpose only if running in an XTERM window
966 or via TELNET or the like, but does no harm elsewhere. */
967 tty
.main
.c_iflag
&= ~IGNBRK
;
968 tty
.main
.c_iflag
&= ~BRKINT
;
970 #endif /* not DOS_NT */
972 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
973 if (!tty_out
->term_initted
)
974 internal_terminal_init ();
978 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
980 /* This code added to insure that, if flow-control is not to be used,
981 we have an unlocked terminal at the start. */
984 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
987 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
990 #if !defined (DOS_NT)
992 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
997 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1000 old_fcntl_owner
[fileno (tty_out
->input
)] =
1001 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1002 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1003 init_sigio (fileno (tty_out
->input
));
1005 if (gpm_tty
== tty_out
)
1007 /* Arrange for mouse events to give us SIGIO signals. */
1008 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1009 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1010 init_sigio (gpm_fd
);
1012 #endif /* HAVE_GPM */
1014 #endif /* F_GETOWN */
1015 #endif /* F_SETFL */
1018 /* This symbol is defined on recent USG systems.
1019 Someone says without this call USG won't really buffer the file
1020 even with a call to setbuf. */
1021 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1023 setbuf (tty_out
->output
, (char *) _sobuf
);
1026 if (tty_out
->terminal
->set_terminal_modes_hook
)
1027 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1029 if (!tty_out
->term_initted
)
1031 Lisp_Object tail
, frame
;
1032 FOR_EACH_FRAME (tail
, frame
)
1034 /* XXX This needs to be revised. */
1035 if (FRAME_TERMCAP_P (XFRAME (frame
))
1036 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1037 init_frame_faces (XFRAME (frame
));
1041 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1043 /* We used to call "direct_output_forward_char(0)" here,
1044 but it's not clear why, since it may not do anything anyway. */
1048 Lisp_Object tail
, frame
;
1050 FOR_EACH_FRAME (tail
, frame
)
1052 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1053 || FRAME_MSDOS_P (XFRAME (frame
)))
1054 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1055 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1059 tty_out
->term_initted
= 1;
1062 /* Return nonzero if safe to use tabs in output.
1063 At the time this is called, init_sys_modes has not been done yet. */
1066 tabs_safe_p (int fd
)
1068 struct emacs_tty etty
;
1070 emacs_get_tty (fd
, &etty
);
1073 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1074 #else /* not TABDLY */
1076 #endif /* not TABDLY */
1082 /* Get terminal size from system.
1083 Store number of lines into *HEIGHTP and width into *WIDTHP.
1084 We store 0 if there's no valid information. */
1087 get_tty_size (int fd
, int *widthp
, int *heightp
)
1089 #if defined TIOCGWINSZ
1092 struct winsize size
;
1094 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1095 *widthp
= *heightp
= 0;
1098 *widthp
= size
.ws_col
;
1099 *heightp
= size
.ws_row
;
1102 #elif defined TIOCGSIZE
1104 /* SunOS - style. */
1105 struct ttysize size
;
1107 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1108 *widthp
= *heightp
= 0;
1111 *widthp
= size
.ts_cols
;
1112 *heightp
= size
.ts_lines
;
1115 #elif defined WINDOWSNT
1117 CONSOLE_SCREEN_BUFFER_INFO info
;
1118 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1120 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1121 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1124 *widthp
= *heightp
= 0;
1128 *widthp
= ScreenCols ();
1129 *heightp
= ScreenRows ();
1131 #else /* system doesn't know size */
1139 /* Set the logical window size associated with descriptor FD
1140 to HEIGHT and WIDTH. This is used mainly with ptys. */
1143 set_window_size (int fd
, int height
, int width
)
1148 struct winsize size
;
1149 size
.ws_row
= height
;
1150 size
.ws_col
= width
;
1152 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1153 return 0; /* error */
1160 /* SunOS - style. */
1161 struct ttysize size
;
1162 size
.ts_lines
= height
;
1163 size
.ts_cols
= width
;
1165 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1171 #endif /* not SunOS-style */
1172 #endif /* not BSD-style */
1177 /* Prepare all terminal devices for exiting Emacs. */
1180 reset_all_sys_modes (void)
1182 struct tty_display_info
*tty
;
1183 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1184 reset_sys_modes (tty
);
1187 /* Prepare the terminal for closing it; move the cursor to the
1188 bottom of the frame, turn off interrupt-driven I/O, etc. */
1191 reset_sys_modes (struct tty_display_info
*tty_out
)
1198 if (!tty_out
->term_initted
)
1201 if (!tty_out
->output
)
1202 return; /* The tty is suspended. */
1204 /* Go to and clear the last line of the terminal. */
1206 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1208 /* Code adapted from tty_clear_end_of_line. */
1209 if (tty_out
->TS_clr_line
)
1211 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1214 { /* have to do it the hard way */
1216 tty_turn_off_insert (tty_out
);
1218 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1220 fputc (' ', tty_out
->output
);
1224 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1225 fflush (tty_out
->output
);
1227 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1228 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1231 /* Avoid possible loss of output when changing terminal modes. */
1232 fsync (fileno (tty_out
->output
));
1236 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1237 if (interrupt_input
)
1239 reset_sigio (fileno (tty_out
->input
));
1240 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1241 old_fcntl_owner
[fileno (tty_out
->input
)]);
1243 #endif /* F_SETOWN */
1245 fcntl (fileno (tty_out
->input
), F_SETFL
,
1246 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1248 #endif /* F_SETFL */
1250 if (tty_out
->old_tty
)
1251 while (emacs_set_tty (fileno (tty_out
->input
),
1252 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1255 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1263 /* Set up the proper status flags for use of a pty. */
1268 /* I'm told that TOICREMOTE does not mean control chars
1269 "can't be sent" but rather that they don't have
1270 input-editing or signaling effects.
1271 That should be good, because we have other ways
1272 to do those things in Emacs.
1273 However, telnet mode seems not to work on 4.2.
1274 So TIOCREMOTE is turned off now. */
1276 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1277 will hang. In particular, the "timeout" feature (which
1278 causes a read to return if there is no data available)
1279 does this. Also it is known that telnet mode will hang
1280 in such a way that Emacs must be stopped (perhaps this
1281 is the same problem).
1283 If TIOCREMOTE is turned off, then there is a bug in
1284 hp-ux which sometimes loses data. Apparently the
1285 code which blocks the master process when the internal
1286 buffer fills up does not work. Other than this,
1287 though, everything else seems to work fine.
1289 Since the latter lossage is more benign, we may as well
1290 lose that way. -- cph */
1292 #if defined (UNIX98_PTYS)
1295 ioctl (fd
, FIONBIO
, &on
);
1300 #endif /* HAVE_PTYS */
1303 #include <sys/socket.h>
1305 #endif /* HAVE_SOCKETS */
1308 #ifndef HAVE_H_ERRNO
1311 #endif /* TRY_AGAIN */
1314 init_system_name (void)
1316 #ifndef HAVE_GETHOSTNAME
1319 Vsystem_name
= build_string (uts
.nodename
);
1320 #else /* HAVE_GETHOSTNAME */
1321 unsigned int hostname_size
= 256;
1322 char *hostname
= alloca (hostname_size
);
1324 /* Try to get the host name; if the buffer is too short, try
1325 again. Apparently, the only indication gethostname gives of
1326 whether the buffer was large enough is the presence or absence
1327 of a '\0' in the string. Eech. */
1330 gethostname (hostname
, hostname_size
- 1);
1331 hostname
[hostname_size
- 1] = '\0';
1333 /* Was the buffer large enough for the '\0'? */
1334 if (strlen (hostname
) < hostname_size
- 1)
1337 hostname_size
<<= 1;
1338 hostname
= alloca (hostname_size
);
1341 /* Turn the hostname into the official, fully-qualified hostname.
1342 Don't do this if we're going to dump; this can confuse system
1343 libraries on some machines and make the dumped emacs core dump. */
1346 #endif /* not CANNOT_DUMP */
1347 if (! strchr (hostname
, '.'))
1350 #ifdef HAVE_GETADDRINFO
1351 struct addrinfo
*res
;
1352 struct addrinfo hints
;
1355 memset (&hints
, 0, sizeof (hints
));
1356 hints
.ai_socktype
= SOCK_STREAM
;
1357 hints
.ai_flags
= AI_CANONNAME
;
1359 for (count
= 0;; count
++)
1361 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1362 || ret
!= EAI_AGAIN
)
1367 Fsleep_for (make_number (1), Qnil
);
1372 struct addrinfo
*it
= res
;
1375 char *fqdn
= it
->ai_canonname
;
1376 if (fqdn
&& strchr (fqdn
, '.')
1377 && strcmp (fqdn
, "localhost.localdomain") != 0)
1383 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1384 strcpy (hostname
, it
->ai_canonname
);
1388 #else /* !HAVE_GETADDRINFO */
1390 for (count
= 0;; count
++)
1396 hp
= gethostbyname (hostname
);
1398 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1405 Fsleep_for (make_number (1), Qnil
);
1410 char *fqdn
= (char *) hp
->h_name
;
1412 if (!strchr (fqdn
, '.'))
1414 /* We still don't have a fully qualified domain name.
1415 Try to find one in the list of alternate names */
1416 char **alias
= hp
->h_aliases
;
1418 && (!strchr (*alias
, '.')
1419 || !strcmp (*alias
, "localhost.localdomain")))
1426 #endif /* !HAVE_GETADDRINFO */
1428 #endif /* HAVE_SOCKETS */
1429 Vsystem_name
= build_string (hostname
);
1430 #endif /* HAVE_GETHOSTNAME */
1433 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1434 if (*p
== ' ' || *p
== '\t')
1439 sigset_t empty_mask
;
1441 /* Store into *ACTION a signal action suitable for Emacs, with handler
1444 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1446 sigemptyset (&action
->sa_mask
);
1447 action
->sa_handler
= handler
;
1448 action
->sa_flags
= 0;
1449 #if defined (SA_RESTART)
1450 /* Emacs mostly works better with restartable system services. If this
1451 flag exists, we probably want to turn it on here.
1452 However, on some systems (only hpux11 at present) this resets the
1453 timeout of `select' which means that `select' never finishes if
1454 it keeps getting signals.
1455 We define BROKEN_SA_RESTART on those systems. */
1456 /* It's not clear why the comment above says "mostly works better". --Stef
1457 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1458 for pending input so we need long-running syscalls to be interrupted
1459 after a signal that sets the interrupt_input_pending flag. */
1460 /* Non-interactive keyboard input goes through stdio, where we always
1461 want restartable system calls. */
1462 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1465 action
->sa_flags
= SA_RESTART
;
1469 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1470 pthread_t main_thread
;
1473 /* If we are on the main thread, handle the signal SIG with HANDLER.
1474 Otherwise, redirect the signal to the main thread, blocking it from
1475 this thread. POSIX says any thread can receive a signal that is
1476 associated with a process, process group, or asynchronous event.
1477 On GNU/Linux that is not true, but for other systems (FreeBSD at
1480 handle_on_main_thread (int sig
, signal_handler_t handler
)
1482 /* Preserve errno, to avoid race conditions with signal handlers that
1483 might change errno. Races can occur even in single-threaded hosts. */
1484 int old_errno
= errno
;
1486 bool on_main_thread
= true;
1487 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1488 if (! pthread_equal (pthread_self (), main_thread
))
1491 sigemptyset (&blocked
);
1492 sigaddset (&blocked
, sig
);
1493 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1494 pthread_kill (main_thread
, sig
);
1495 on_main_thread
= false;
1504 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1505 static char *my_sys_siglist
[NSIG
];
1509 # define sys_siglist my_sys_siglist
1515 sigemptyset (&empty_mask
);
1517 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1518 main_thread
= pthread_self ();
1521 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1525 sys_siglist
[SIGABRT
] = "Aborted";
1528 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1531 sys_siglist
[SIGALRM
] = "Alarm clock";
1534 sys_siglist
[SIGBUS
] = "Bus error";
1537 sys_siglist
[SIGCLD
] = "Child status changed";
1540 sys_siglist
[SIGCHLD
] = "Child status changed";
1543 sys_siglist
[SIGCONT
] = "Continued";
1546 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1549 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1552 sys_siglist
[SIGEMT
] = "Emulation trap";
1555 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1558 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1561 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1564 sys_siglist
[SIGHUP
] = "Hangup";
1567 sys_siglist
[SIGILL
] = "Illegal instruction";
1570 sys_siglist
[SIGINT
] = "Interrupt";
1573 sys_siglist
[SIGIO
] = "I/O possible";
1576 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1579 sys_siglist
[SIGIOT
] = "IOT trap";
1582 sys_siglist
[SIGKILL
] = "Killed";
1585 sys_siglist
[SIGLOST
] = "Resource lost";
1588 sys_siglist
[SIGLWP
] = "SIGLWP";
1591 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1594 sys_siglist
[SIGWIND
] = "SIGPHONE";
1597 sys_siglist
[SIGPIPE
] = "Broken pipe";
1600 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1603 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1606 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1609 sys_siglist
[SIGPWR
] = "Power-fail restart";
1612 sys_siglist
[SIGQUIT
] = "Quit";
1615 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1618 sys_siglist
[SIGSAK
] = "Secure attention";
1621 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1624 sys_siglist
[SIGSOUND
] = "Sound completed";
1627 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1630 sys_siglist
[SIGSTP
] = "Stopped (user)";
1633 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1636 sys_siglist
[SIGTERM
] = "Terminated";
1639 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1642 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1645 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1648 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1651 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1654 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1657 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1660 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1663 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1666 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1669 sys_siglist
[SIGWINCH
] = "Window size changed";
1672 sys_siglist
[SIGWIND
] = "SIGWIND";
1675 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1678 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1681 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1690 /* Figure out how many bits the system's random number generator uses.
1691 `random' and `lrand48' are assumed to return 31 usable bits.
1692 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1693 so we'll shift it and treat it like the 15-bit USG `rand'. */
1697 # define RAND_BITS 31
1698 # else /* !HAVE_RANDOM */
1699 # ifdef HAVE_LRAND48
1700 # define RAND_BITS 31
1701 # define random lrand48
1702 # else /* !HAVE_LRAND48 */
1703 # define RAND_BITS 15
1704 # if RAND_MAX == 32767
1705 # define random rand
1706 # else /* RAND_MAX != 32767 */
1707 # if RAND_MAX == 2147483647
1708 # define random() (rand () >> 16)
1709 # else /* RAND_MAX != 2147483647 */
1711 # define random rand
1713 # define random() (rand () >> 16)
1715 # endif /* RAND_MAX != 2147483647 */
1716 # endif /* RAND_MAX != 32767 */
1717 # endif /* !HAVE_LRAND48 */
1718 # endif /* !HAVE_RANDOM */
1719 #endif /* !RAND_BITS */
1722 seed_random (void *seed
, ptrdiff_t seed_size
)
1724 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1725 unsigned int arg
= 0;
1729 unsigned char *argp
= (unsigned char *) &arg
;
1730 unsigned char *seedp
= seed
;
1732 for (i
= 0; i
< seed_size
; i
++)
1733 argp
[i
% sizeof arg
] ^= seedp
[i
];
1737 # ifdef HAVE_LRAND48
1748 EMACS_TIME t
= current_emacs_time ();
1749 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1750 seed_random (&v
, sizeof v
);
1754 * Return a nonnegative random integer out of whatever we've got.
1755 * It contains enough bits to make a random (signed) Emacs fixnum.
1756 * This suffices even for a 64-bit architecture with a 15-bit rand.
1763 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1764 val
= (random () ^ (val
<< RAND_BITS
)
1765 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1766 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1767 return val
& INTMASK
;
1770 #ifndef HAVE_SNPRINTF
1771 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1773 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1775 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1776 ptrdiff_t nbytes
= size
- 1;
1781 va_start (ap
, format
);
1782 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1786 if (nbytes
== size
- 1)
1788 /* Calculate the length of the string that would have been created
1789 had the buffer been large enough. */
1790 char stackbuf
[4000];
1792 ptrdiff_t bsize
= sizeof stackbuf
;
1793 va_start (ap
, format
);
1794 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1800 if (INT_MAX
< nbytes
)
1813 /* If a backtrace is available, output the top lines of it to stderr.
1814 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
1815 This function may be called from a signal handler, so it should
1816 not invoke async-unsafe functions like malloc. */
1818 emacs_backtrace (int backtrace_limit
)
1820 enum { BACKTRACE_LIMIT_MAX
= 500 };
1821 void *buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1822 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
1823 int npointers
= backtrace (buffer
, bounded_limit
+ 1);
1825 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
1826 backtrace_symbols_fd (buffer
, bounded_limit
, STDERR_FILENO
);
1827 if (bounded_limit
< npointers
)
1828 ignore_value (write (STDERR_FILENO
, "...\n", 4));
1832 /* Using emacs_abort lets GDB return from a breakpoint here. */
1836 fatal_error_backtrace (SIGABRT
, 10);
1841 emacs_open (const char *path
, int oflag
, int mode
)
1843 register int rtnval
;
1845 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1846 && (errno
== EINTR
))
1852 emacs_close (int fd
)
1855 register int rtnval
;
1857 while ((rtnval
= close (fd
)) == -1
1858 && (errno
== EINTR
))
1861 /* If close is interrupted SunOS 4.1 may or may not have closed the
1862 file descriptor. If it did the second close will fail with
1863 errno = EBADF. That means we have succeeded. */
1864 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1870 /* Maximum number of bytes to read or write in a single system call.
1871 This works around a serious bug in Linux kernels before 2.6.16; see
1872 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1873 It's likely to work around similar bugs in other operating systems, so do it
1874 on all platforms. Round INT_MAX down to a page size, with the conservative
1875 assumption that page sizes are at most 2**18 bytes (any kernel with a
1876 page size larger than that shouldn't have the bug). */
1877 #ifndef MAX_RW_COUNT
1878 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1881 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1882 Return the number of bytes read, which might be less than NBYTE.
1883 On error, set errno and return -1. */
1885 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1887 register ssize_t rtnval
;
1889 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1890 passes a size that large to emacs_read. */
1892 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1893 && (errno
== EINTR
))
1898 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1899 or if a partial write occurs. Return the number of bytes written, setting
1900 errno if this is less than NBYTE. */
1902 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1905 ptrdiff_t bytes_written
;
1911 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1918 /* I originally used `QUIT' but that might causes files to
1919 be truncated if you hit C-g in the middle of it. --Stef */
1920 process_pending_signals ();
1930 bytes_written
+= rtnval
;
1933 return (bytes_written
);
1936 static struct allocator
const emacs_norealloc_allocator
=
1937 { xmalloc
, NULL
, xfree
, memory_full
};
1939 /* Get the symbolic link value of FILENAME. Return a pointer to a
1940 NUL-terminated string. If readlink fails, return NULL and set
1941 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1942 Otherwise, allocate memory and return a pointer to that memory. If
1943 memory allocation fails, diagnose and fail without returning. If
1944 successful, store the length of the symbolic link into *LINKLEN. */
1946 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1948 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1949 &emacs_norealloc_allocator
, careadlinkatcwd
);
1954 * All of the following are for USG.
1956 * On USG systems the system calls are INTERRUPTIBLE by signals
1957 * that the user program has elected to catch. Thus the system call
1958 * must be retried in these cases. To handle this without massive
1959 * changes in the source code, we remap the standard system call names
1960 * to names for our own functions in sysdep.c that do the system call
1961 * with retries. Actually, for portability reasons, it is good
1962 * programming practice, as this example shows, to limit all actual
1963 * system calls to a single occurrence in the source. Sure, this
1964 * adds an extra level of function call overhead but it is almost
1965 * always negligible. Fred Fish, Unisoft Systems Inc.
1969 * Warning, this function may not duplicate 4.2 action properly
1970 * under error conditions.
1973 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
1976 /* In 4.1, param.h fails to define this. */
1977 #define MAXPATHLEN 1024
1981 getwd (char *pathname
)
1983 char *npath
, *spath
;
1984 extern char *getcwd (char *, size_t);
1986 BLOCK_INPUT
; /* getcwd uses malloc */
1987 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1993 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1994 up to first slash. Should be harmless on other systems. */
1995 while (*npath
&& *npath
!= '/')
1997 strcpy (pathname
, npath
);
1998 free (spath
); /* getcwd uses malloc */
2003 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2006 /* Directory routines for systems that don't have them. */
2008 #ifdef HAVE_DIRENT_H
2012 #if !defined (HAVE_CLOSEDIR)
2015 closedir (DIR *dirp
/* stream from opendir */)
2019 rtnval
= emacs_close (dirp
->dd_fd
);
2024 #endif /* not HAVE_CLOSEDIR */
2025 #endif /* HAVE_DIRENT_H */
2028 /* Return a struct timeval that is roughly equivalent to T.
2029 Use the least timeval not less than T.
2030 Return an extremal value if the result would overflow. */
2032 make_timeval (EMACS_TIME t
)
2035 tv
.tv_sec
= t
.tv_sec
;
2036 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2038 if (t
.tv_nsec
% 1000 != 0)
2040 if (tv
.tv_usec
< 999999)
2042 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2052 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2053 ATIME and MTIME, respectively.
2054 FD must be either negative -- in which case it is ignored --
2055 or a file descriptor that is open on FILE.
2056 If FD is nonnegative, then FILE can be NULL. */
2058 set_file_times (int fd
, const char *filename
,
2059 EMACS_TIME atime
, EMACS_TIME mtime
)
2061 struct timespec timespec
[2];
2062 timespec
[0] = atime
;
2063 timespec
[1] = mtime
;
2064 return fdutimens (fd
, filename
, timespec
);
2067 #ifndef HAVE_STRSIGNAL
2069 strsignal (int code
)
2073 if (0 <= code
&& code
< NSIG
)
2075 /* Cast to suppress warning if the table has const char *. */
2076 signame
= (char *) sys_siglist
[code
];
2081 #endif /* HAVE_STRSIGNAL */
2084 /* For make-serial-process */
2086 serial_open (char *port
)
2090 fd
= emacs_open ((char*) port
,
2103 error ("Could not open %s: %s",
2104 port
, emacs_strerror (errno
));
2107 ioctl (fd
, TIOCEXCL
, (char *) 0);
2113 #if !defined (HAVE_CFMAKERAW)
2114 /* Workaround for targets which are missing cfmakeraw. */
2115 /* Pasted from man page. */
2117 cfmakeraw (struct termios
*termios_p
)
2119 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2120 termios_p
->c_oflag
&= ~OPOST
;
2121 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2122 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2123 termios_p
->c_cflag
|= CS8
;
2125 #endif /* !defined (HAVE_CFMAKERAW */
2127 #if !defined (HAVE_CFSETSPEED)
2128 /* Workaround for targets which are missing cfsetspeed. */
2130 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2132 return (cfsetispeed (termios_p
, vitesse
)
2133 + cfsetospeed (termios_p
, vitesse
));
2137 /* For serial-process-configure */
2139 serial_configure (struct Lisp_Process
*p
,
2140 Lisp_Object contact
)
2142 Lisp_Object childp2
= Qnil
;
2143 Lisp_Object tem
= Qnil
;
2144 struct termios attr
;
2146 char summary
[4] = "???"; /* This usually becomes "8N1". */
2148 childp2
= Fcopy_sequence (p
->childp
);
2150 /* Read port attributes and prepare default configuration. */
2151 err
= tcgetattr (p
->outfd
, &attr
);
2153 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2155 #if defined (CLOCAL)
2156 attr
.c_cflag
|= CLOCAL
;
2159 attr
.c_cflag
|= CREAD
;
2162 /* Configure speed. */
2163 if (!NILP (Fplist_member (contact
, QCspeed
)))
2164 tem
= Fplist_get (contact
, QCspeed
);
2166 tem
= Fplist_get (p
->childp
, QCspeed
);
2168 err
= cfsetspeed (&attr
, XINT (tem
));
2170 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2171 emacs_strerror (errno
));
2172 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2174 /* Configure bytesize. */
2175 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2176 tem
= Fplist_get (contact
, QCbytesize
);
2178 tem
= Fplist_get (p
->childp
, QCbytesize
);
2180 tem
= make_number (8);
2182 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2183 error (":bytesize must be nil (8), 7, or 8");
2184 summary
[0] = XINT (tem
) + '0';
2185 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2186 attr
.c_cflag
&= ~CSIZE
;
2187 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2189 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2190 if (XINT (tem
) != 8)
2191 error ("Bytesize cannot be changed");
2193 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2195 /* Configure parity. */
2196 if (!NILP (Fplist_member (contact
, QCparity
)))
2197 tem
= Fplist_get (contact
, QCparity
);
2199 tem
= Fplist_get (p
->childp
, QCparity
);
2200 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2201 error (":parity must be nil (no parity), `even', or `odd'");
2202 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2203 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2204 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2209 else if (EQ (tem
, Qeven
))
2212 attr
.c_cflag
|= PARENB
;
2213 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2215 else if (EQ (tem
, Qodd
))
2218 attr
.c_cflag
|= (PARENB
| PARODD
);
2219 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2222 /* Don't error on no parity, which should be set by cfmakeraw. */
2224 error ("Parity cannot be configured");
2226 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2228 /* Configure stopbits. */
2229 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2230 tem
= Fplist_get (contact
, QCstopbits
);
2232 tem
= Fplist_get (p
->childp
, QCstopbits
);
2234 tem
= make_number (1);
2236 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2237 error (":stopbits must be nil (1 stopbit), 1, or 2");
2238 summary
[2] = XINT (tem
) + '0';
2239 #if defined (CSTOPB)
2240 attr
.c_cflag
&= ~CSTOPB
;
2241 if (XINT (tem
) == 2)
2242 attr
.c_cflag
|= CSTOPB
;
2244 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2245 if (XINT (tem
) != 1)
2246 error ("Stopbits cannot be configured");
2248 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2250 /* Configure flowcontrol. */
2251 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2252 tem
= Fplist_get (contact
, QCflowcontrol
);
2254 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2255 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2256 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2257 #if defined (CRTSCTS)
2258 attr
.c_cflag
&= ~CRTSCTS
;
2260 #if defined (CNEW_RTSCTS)
2261 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2263 #if defined (IXON) && defined (IXOFF)
2264 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2268 /* Already configured. */
2270 else if (EQ (tem
, Qhw
))
2272 #if defined (CRTSCTS)
2273 attr
.c_cflag
|= CRTSCTS
;
2274 #elif defined (CNEW_RTSCTS)
2275 attr
.c_cflag
|= CNEW_RTSCTS
;
2277 error ("Hardware flowcontrol (RTS/CTS) not supported");
2280 else if (EQ (tem
, Qsw
))
2282 #if defined (IXON) && defined (IXOFF)
2283 attr
.c_iflag
|= (IXON
| IXOFF
);
2285 error ("Software flowcontrol (XON/XOFF) not supported");
2288 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2290 /* Activate configuration. */
2291 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2293 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2295 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2296 pset_childp (p
, childp2
);
2298 #endif /* not DOS_NT */
2300 /* System depended enumeration of and access to system processes a-la ps(1). */
2304 /* Process enumeration and access via /proc. */
2307 list_system_processes (void)
2309 Lisp_Object procdir
, match
, proclist
, next
;
2310 struct gcpro gcpro1
, gcpro2
;
2311 register Lisp_Object tail
;
2313 GCPRO2 (procdir
, match
);
2314 /* For every process on the system, there's a directory in the
2315 "/proc" pseudo-directory whose name is the numeric ID of that
2317 procdir
= build_string ("/proc");
2318 match
= build_string ("[0-9]+");
2319 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2321 /* `proclist' gives process IDs as strings. Destructively convert
2322 each string into a number. */
2323 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2326 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2330 /* directory_files_internal returns the files in reverse order; undo
2332 proclist
= Fnreverse (proclist
);
2336 #elif defined BSD_SYSTEM
2339 list_system_processes (void)
2341 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2342 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2344 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2347 struct kinfo_proc
*procs
;
2350 struct gcpro gcpro1
;
2351 Lisp_Object proclist
= Qnil
;
2353 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2356 procs
= xmalloc (len
);
2357 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2364 len
/= sizeof (struct kinfo_proc
);
2365 for (i
= 0; i
< len
; i
++)
2367 #if defined DARWIN_OS || defined __NetBSD__
2368 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2369 #elif defined __OpenBSD__
2370 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2372 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2382 /* The WINDOWSNT implementation is in w32.c.
2383 The MSDOS implementation is in dosfns.c. */
2384 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2387 list_system_processes (void)
2392 #endif /* !defined (WINDOWSNT) */
2396 time_from_jiffies (unsigned long long tval
, long hz
)
2398 unsigned long long s
= tval
/ hz
;
2399 unsigned long long frac
= tval
% hz
;
2402 if (TYPE_MAXIMUM (time_t) < s
)
2404 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2405 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2406 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2409 /* This is reachable only in the unlikely case that HZ * HZ
2410 exceeds ULLONG_MAX. It calculates an approximation that is
2411 guaranteed to be in range. */
2412 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2413 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2414 ns
= frac
/ hz_per_ns
;
2417 return make_emacs_time (s
, ns
);
2421 ltime_from_jiffies (unsigned long long tval
, long hz
)
2423 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2424 return make_lisp_time (t
);
2431 EMACS_TIME up
= make_emacs_time (0, 0);
2434 fup
= fopen ("/proc/uptime", "r");
2438 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2439 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2441 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2442 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2443 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2446 if (TYPE_MAXIMUM (time_t) < upsec
)
2448 upsec
= TYPE_MAXIMUM (time_t);
2449 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2453 int upfraclen
= upfrac_end
- upfrac_start
;
2454 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2456 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2458 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2460 up
= make_emacs_time (upsec
, upfrac
);
2469 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2470 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2473 procfs_ttyname (int rdev
)
2476 char name
[PATH_MAX
];
2479 fdev
= fopen ("/proc/tty/drivers", "r");
2484 unsigned long minor_beg
, minor_end
;
2485 char minor
[25]; /* 2 32-bit numbers + dash */
2488 while (!feof (fdev
) && !ferror (fdev
))
2490 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2491 && major
== MAJOR (rdev
))
2493 minor_beg
= strtoul (minor
, &endp
, 0);
2495 minor_end
= minor_beg
;
2496 else if (*endp
== '-')
2497 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2501 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2503 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2511 return build_string (name
);
2514 static unsigned long
2515 procfs_get_total_memory (void)
2518 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2521 fmem
= fopen ("/proc/meminfo", "r");
2525 unsigned long entry_value
;
2526 char entry_name
[20]; /* the longest I saw is 13+1 */
2528 while (!feof (fmem
) && !ferror (fmem
))
2530 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2531 && strcmp (entry_name
, "MemTotal:") == 0)
2533 retval
= entry_value
;
2544 system_process_attributes (Lisp_Object pid
)
2546 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2550 long clocks_per_sec
;
2552 char procbuf
[1025], *p
, *q
;
2555 static char const default_cmd
[] = "???";
2556 const char *cmd
= default_cmd
;
2557 int cmdsize
= sizeof default_cmd
- 1;
2558 char *cmdline
= NULL
;
2559 ptrdiff_t cmdline_size
;
2562 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2565 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2566 long priority
, niceness
, rss
;
2567 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2568 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2570 Lisp_Object attrs
= Qnil
;
2571 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2572 struct gcpro gcpro1
, gcpro2
;
2574 CHECK_NUMBER_OR_FLOAT (pid
);
2575 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2576 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2577 if (stat (procfn
, &st
) < 0)
2580 GCPRO2 (attrs
, decoded_cmd
);
2584 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2586 pw
= getpwuid (uid
);
2589 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2592 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2594 gr
= getgrgid (gid
);
2597 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2599 strcpy (fn
, procfn
);
2600 procfn_end
= fn
+ strlen (fn
);
2601 strcpy (procfn_end
, "/stat");
2602 fd
= emacs_open (fn
, O_RDONLY
, 0);
2603 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2605 procbuf
[nread
] = '\0';
2608 p
= strchr (p
, '(');
2611 q
= strrchr (p
+ 1, ')');
2621 /* Command name is encoded in locale-coding-system; decode it. */
2622 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2623 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2624 Vlocale_coding_system
, 0);
2625 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2629 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2631 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2632 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2633 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2634 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2635 &u_time
, &s_time
, &cutime
, &cstime
,
2636 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2641 state_str
[1] = '\0';
2642 tem
= build_string (state_str
);
2643 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2645 /* Stops GCC whining about limited range of data type. */
2650 thcount_eint
= thcount
;
2651 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2652 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2653 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2654 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2655 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2656 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2657 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2658 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2659 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2660 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2661 if (clocks_per_sec
< 0)
2662 clocks_per_sec
= 100;
2663 attrs
= Fcons (Fcons (Qutime
,
2664 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2666 attrs
= Fcons (Fcons (Qstime
,
2667 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2669 attrs
= Fcons (Fcons (Qtime
,
2670 ltime_from_jiffies (s_time
+ u_time
,
2673 attrs
= Fcons (Fcons (Qcutime
,
2674 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2676 attrs
= Fcons (Fcons (Qcstime
,
2677 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2679 attrs
= Fcons (Fcons (Qctime
,
2680 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2682 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2683 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2684 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2685 tnow
= current_emacs_time ();
2686 telapsed
= get_up_time ();
2687 tboot
= sub_emacs_time (tnow
, telapsed
);
2688 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2689 tstart
= add_emacs_time (tboot
, tstart
);
2690 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2691 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2692 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2693 telapsed
= sub_emacs_time (tnow
, tstart
);
2694 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2695 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2696 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2697 / EMACS_TIME_TO_DOUBLE (telapsed
));
2700 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2701 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2704 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2711 strcpy (procfn_end
, "/cmdline");
2712 fd
= emacs_open (fn
, O_RDONLY
, 0);
2716 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2718 if (emacs_read (fd
, &ch
, 1) != 1)
2721 if (c_isspace (c
) || c
== '\\')
2722 cmdline_size
++; /* for later quoting, see below */
2726 cmdline
= xmalloc (cmdline_size
+ 1);
2727 lseek (fd
, 0L, SEEK_SET
);
2729 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2730 cmdline
[nread
++] = '\0';
2733 /* Assigning zero to `nread' makes us skip the following
2734 two loops, assign zero to cmdline_size, and enter the
2735 following `if' clause that handles unknown command
2739 /* We don't want trailing null characters. */
2740 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2742 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2744 /* Escape-quote whitespace and backslashes. */
2745 if (c_isspace (*p
) || *p
== '\\')
2747 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2751 else if (*p
== '\0')
2754 cmdline_size
= nread
;
2758 cmdline_size
= cmdsize
+ 2;
2759 cmdline
= xmalloc (cmdline_size
+ 1);
2760 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2763 /* Command line is encoded in locale-coding-system; decode it. */
2764 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2765 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2766 Vlocale_coding_system
, 0);
2768 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2775 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2777 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2778 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2779 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2780 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2781 #undef _FILE_OFFSET_BITS
2783 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2788 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2789 #define _FILE_OFFSET_BITS 64
2790 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2792 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2795 system_process_attributes (Lisp_Object pid
)
2797 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2802 struct psinfo pinfo
;
2808 Lisp_Object attrs
= Qnil
;
2809 Lisp_Object decoded_cmd
, tem
;
2810 struct gcpro gcpro1
, gcpro2
;
2812 CHECK_NUMBER_OR_FLOAT (pid
);
2813 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2814 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2815 if (stat (procfn
, &st
) < 0)
2818 GCPRO2 (attrs
, decoded_cmd
);
2822 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2824 pw
= getpwuid (uid
);
2827 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2830 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2832 gr
= getgrgid (gid
);
2835 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2837 strcpy (fn
, procfn
);
2838 procfn_end
= fn
+ strlen (fn
);
2839 strcpy (procfn_end
, "/psinfo");
2840 fd
= emacs_open (fn
, O_RDONLY
, 0);
2842 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2844 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2845 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2846 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2850 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2851 state_str
[1] = '\0';
2852 tem
= build_string (state_str
);
2853 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2856 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2857 need to get a string from it. */
2859 /* FIXME: missing: Qtpgid */
2871 Are they available? */
2873 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2874 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2875 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2876 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2877 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2879 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2880 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2881 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2883 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2884 range 0 .. 2**15, representing 0.0 .. 1.0. */
2885 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2886 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2889 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2890 strlen (pinfo
.pr_fname
)),
2891 Vlocale_coding_system
, 0);
2892 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2894 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2895 strlen (pinfo
.pr_psargs
)),
2896 Vlocale_coding_system
, 0);
2897 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2907 #elif defined __FreeBSD__
2910 timeval_to_EMACS_TIME (struct timeval t
)
2912 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
2916 make_lisp_timeval (struct timeval t
)
2918 return make_lisp_time (timeval_to_EMACS_TIME (t
));
2922 system_process_attributes (Lisp_Object pid
)
2925 int pagesize
= getpagesize ();
2932 char args
[MAXPATHLEN
];
2935 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
2936 struct kinfo_proc proc
;
2937 size_t proclen
= sizeof proc
;
2939 struct gcpro gcpro1
, gcpro2
;
2940 Lisp_Object attrs
= Qnil
;
2941 Lisp_Object decoded_comm
;
2943 CHECK_NUMBER_OR_FLOAT (pid
);
2944 CONS_TO_INTEGER (pid
, int, proc_id
);
2947 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
2950 GCPRO2 (attrs
, decoded_comm
);
2952 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
2955 pw
= getpwuid (proc
.ki_uid
);
2958 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2960 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
2963 gr
= getgrgid (proc
.ki_svgid
);
2966 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2968 decoded_comm
= code_convert_string_norecord
2969 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
2970 Vlocale_coding_system
, 0);
2972 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
2974 char state
[2] = {'\0', '\0'};
2975 switch (proc
.ki_stat
)
2997 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3000 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3001 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3002 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3005 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3008 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3010 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3011 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3012 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3013 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3014 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3016 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3018 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3020 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3021 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3022 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3024 attrs
= Fcons (Fcons (Qcutime
,
3025 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3027 attrs
= Fcons (Fcons (Qcstime
,
3028 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3030 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3031 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3032 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3034 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3036 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3037 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3038 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3039 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3040 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3043 now
= current_emacs_time ();
3044 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3045 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3047 len
= sizeof fscale
;
3048 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3053 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3055 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3056 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3057 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3061 len
= sizeof npages
;
3062 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3064 double pmem
= (proc
.ki_flag
& P_INMEM
3065 ? 100.0 * proc
.ki_rssize
/ npages
3067 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3070 mib
[2] = KERN_PROC_ARGS
;
3072 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3075 for (i
= 0; i
< len
; i
++)
3077 if (! args
[i
] && i
< len
- 1)
3082 (code_convert_string_norecord
3083 (build_unibyte_string (args
),
3084 Vlocale_coding_system
, 0));
3086 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3093 /* The WINDOWSNT implementation is in w32.c.
3094 The MSDOS implementation is in dosfns.c. */
3095 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3098 system_process_attributes (Lisp_Object pid
)
3103 #endif /* !defined (WINDOWSNT) */