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
31 #endif /* HAVE_PWD_H */
35 #include <allocator.h>
37 #include <careadlinkat.h>
38 #include <ignore-value.h>
42 #include "sysselect.h"
43 #include "blockinput.h"
46 #include <sys/param.h>
47 #include <sys/sysctl.h>
52 #include <sys/resource.h>
58 #define write sys_write
60 #endif /* not WINDOWSNT */
62 #include <sys/types.h>
66 /* Get SI_SRPC_DOMAIN, if it is available. */
67 #ifdef HAVE_SYS_SYSTEMINFO_H
68 #include <sys/systeminfo.h>
71 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
73 #include <sys/param.h>
82 #ifdef HAVE_SYS_UTSNAME_H
83 #include <sys/utsname.h>
85 #endif /* HAVE_SYS_UTSNAME_H */
90 #include "termhooks.h"
93 #include "dispextern.h"
95 #include "cm.h" /* for reset_sys_modes */
99 /* In process.h which conflicts with the local copy. */
101 int _cdecl
_spawnlp (int, const char *, const char *, ...);
102 int _cdecl
_getpid (void);
103 extern char *getwd (char *);
106 #include "syssignal.h"
109 static int emacs_get_tty (int, struct emacs_tty
*);
110 static int emacs_set_tty (int, struct emacs_tty
*, int);
111 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
112 static _Noreturn
void croak (char *);
115 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
117 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
120 /* Declare here, including term.h is problematic on some systems. */
121 extern void tputs (const char *, int, int (*)(int));
123 static const int baud_convert
[] =
125 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
126 1800, 2400, 4800, 9600, 19200, 38400
130 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
132 /* Return the current working directory. Returns NULL on errors.
133 Any other returned value must be freed with free. This is used
134 only when get_current_dir_name is not defined on the system. */
136 get_current_dir_name (void)
140 struct stat dotstat
, pwdstat
;
141 /* If PWD is accurate, use it instead of calling getwd. PWD is
142 sometimes a nicer name, and using it may avoid a fatal error if a
143 parent directory is searchable but not readable. */
144 if ((pwd
= getenv ("PWD")) != 0
145 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
146 && stat (pwd
, &pwdstat
) == 0
147 && stat (".", &dotstat
) == 0
148 && dotstat
.st_ino
== pwdstat
.st_ino
149 && dotstat
.st_dev
== pwdstat
.st_dev
151 && strlen (pwd
) < MAXPATHLEN
155 buf
= malloc (strlen (pwd
) + 1);
163 size_t buf_size
= 1024;
164 buf
= malloc (buf_size
);
169 if (getcwd (buf
, buf_size
) == buf
)
173 int tmp_errno
= errno
;
179 buf
= realloc (buf
, buf_size
);
187 /* We need MAXPATHLEN here. */
188 buf
= malloc (MAXPATHLEN
+ 1);
191 if (getwd (buf
) == NULL
)
193 int tmp_errno
= errno
;
205 /* Discard pending input on all input descriptors. */
208 discard_tty_input (void)
211 struct emacs_tty buf
;
216 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
217 while (dos_keyread () != -1)
219 #else /* not MSDOS */
221 struct tty_display_info
*tty
;
222 for (tty
= tty_list
; tty
; tty
= tty
->next
)
224 if (tty
->input
) /* Is the device suspended? */
226 emacs_get_tty (fileno (tty
->input
), &buf
);
227 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
231 #endif /* not MSDOS */
232 #endif /* not WINDOWSNT */
238 /* Arrange for character C to be read as the next input from
240 XXX What if we have multiple ttys?
246 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
249 /* Should perhaps error if in batch mode */
251 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
252 #else /* no TIOCSTI */
253 error ("Cannot stuff terminal input characters in this version of Unix");
254 #endif /* no TIOCSTI */
260 init_baud_rate (int fd
)
270 #else /* not DOS_NT */
275 emacs_ospeed
= cfgetospeed (&sg
);
276 #endif /* not DOS_NT */
279 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
280 ? baud_convert
[emacs_ospeed
] : 9600);
287 /* Set nonzero to make following function work under dbx
288 (at least for bsd). */
289 int wait_debugging EXTERNALLY_VISIBLE
;
294 wait_for_termination_1 (pid_t pid
, int interruptible
)
298 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
299 /* Note that kill returns -1 even if the process is just a zombie now.
300 But inevitably a SIGCHLD interrupt should be generated
301 and child_sig will do waitpid and make the process go away. */
302 /* There is some indication that there is a bug involved with
303 termination of subprocesses, perhaps involving a kernel bug too,
304 but no idea what it is. Just as a hunch we signal SIGCHLD to see
305 if that causes the problem to go away or get worse. */
306 sigsetmask (sigmask (SIGCHLD
));
307 if (0 > kill (pid
, 0))
309 sigsetmask (SIGEMPTYMASK
);
310 kill (getpid (), SIGCHLD
);
316 sigpause (SIGEMPTYMASK
);
317 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
321 #else /* not WINDOWSNT */
322 sigblock (sigmask (SIGCHLD
));
324 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
326 sigunblock (sigmask (SIGCHLD
));
330 sigsuspend (&empty_mask
);
331 #endif /* not WINDOWSNT */
332 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
338 /* Wait for subprocess with process id `pid' to terminate and
339 make sure it will get eliminated (not remain forever as a zombie) */
342 wait_for_termination (pid_t pid
)
344 wait_for_termination_1 (pid
, 0);
347 /* Like the above, but allow keyboard interruption. */
349 interruptible_wait_for_termination (pid_t pid
)
351 wait_for_termination_1 (pid
, 1);
355 * flush any pending output
356 * (may flush input as well; it does not matter the way we use it)
360 flush_pending_output (int channel
)
362 /* FIXME: maybe this function should be removed */
365 /* Set up the terminal at the other end of a pseudo-terminal that
366 we will be controlling an inferior through.
367 It should not echo or do line-editing, since that is done
368 in Emacs. No padding needed for insertion into an Emacs buffer. */
371 child_setup_tty (int out
)
376 emacs_get_tty (out
, &s
);
377 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
378 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
380 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
381 Some versions of GNU Hurd do not have FFDLY? */
383 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
384 /* No output delays */
386 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
387 /* No output delays */
390 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
391 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
393 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
396 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
399 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
401 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
402 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
403 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
404 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
407 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
410 #ifdef SIGNALS_VIA_CHARACTERS
411 /* the QUIT and INTR character are used in process_send_signal
412 so set them here to something useful. */
413 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
414 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
415 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
416 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
417 #endif /* not SIGNALS_VIA_CHARACTERS */
420 /* Also, PTY overloads NUL and BREAK.
421 don't ignore break, but don't signal either, so it looks like NUL. */
422 s
.main
.c_iflag
&= ~IGNBRK
;
423 s
.main
.c_iflag
&= ~BRKINT
;
424 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
425 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
426 would force it to 0377. That looks like duplicated code. */
427 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
430 /* We originally enabled ICANON (and set VEOF to 04), and then had
431 process.c send additional EOF chars to flush the output when faced
432 with long lines, but this leads to weird effects when the
433 subprocess has disabled ICANON and ends up seeing those spurious
434 extra EOFs. So we don't send EOFs any more in
435 process.c:send_process. First we tried to disable ICANON by
436 default, so if a subsprocess sets up ICANON, it's his problem (or
437 the Elisp package that talks to it) to deal with lines that are
438 too long. But this disables some features, such as the ability
439 to send EOF signals. So we re-enabled ICANON but there is no
440 more "send eof to flush" going on (which is wrong and unportable
441 in itself). The correct way to handle too much output is to
442 buffer what could not be written and then write it again when
443 select returns ok for writing. This has it own set of
444 problems. Write is now asynchronous, is that a problem? How much
445 do we buffer, and what do we do when that limit is reached? */
447 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
448 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
449 #if 0 /* These settings only apply to non-ICANON mode. */
450 s
.main
.c_cc
[VMIN
] = 1;
451 s
.main
.c_cc
[VTIME
] = 0;
454 emacs_set_tty (out
, &s
, 0);
455 #endif /* not WINDOWSNT */
457 #endif /* not MSDOS */
460 /* Record a signal code and the handler for it. */
464 void (*handler
) (int);
467 static void save_signal_handlers (struct save_signal
*);
468 static void restore_signal_handlers (struct save_signal
*);
470 /* Suspend the Emacs process; give terminal to its superior. */
475 #if defined (SIGTSTP) && !defined (MSDOS)
478 int pgrp
= EMACS_GETPGRP (0);
479 EMACS_KILLPG (pgrp
, SIGTSTP
);
482 #else /* No SIGTSTP */
483 /* On a system where suspending is not implemented,
484 instead fork a subshell and let it talk directly to the terminal
488 #endif /* no SIGTSTP */
491 /* Fork a subshell. */
496 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
498 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
501 struct save_signal saved_handlers
[5];
503 unsigned char *volatile str_volatile
= 0;
507 saved_handlers
[0].code
= SIGINT
;
508 saved_handlers
[1].code
= SIGQUIT
;
509 saved_handlers
[2].code
= SIGTERM
;
511 saved_handlers
[3].code
= SIGIO
;
512 saved_handlers
[4].code
= 0;
514 saved_handlers
[3].code
= 0;
517 /* Mentioning current_buffer->buffer would mean including buffer.h,
518 which somehow wedges the hp compiler. So instead... */
520 dir
= intern ("default-directory");
521 if (NILP (Fboundp (dir
)))
523 dir
= Fsymbol_value (dir
);
527 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
528 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
530 memcpy (str
, SDATA (dir
), len
);
531 if (str
[len
- 1] != '/') str
[len
++] = '/';
537 save_signal_handlers (saved_handlers
);
538 synch_process_alive
= 1;
542 error ("Can't spawn subshell");
549 #ifdef DOS_NT /* MW, Aug 1993 */
552 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
555 sh
= (char *) egetenv ("SHELL");
559 /* Use our buffer's default directory for the subshell. */
561 if (str
&& chdir ((char *) str
) != 0)
564 ignore_value (write (1, "Can't chdir\n", 12));
569 close_process_descs (); /* Close Emacs's pipes/ptys */
571 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
573 char *epwd
= getenv ("PWD");
574 char old_pwd
[MAXPATHLEN
+1+4];
576 /* If PWD is set, pass it with corrected value. */
579 strcpy (old_pwd
, epwd
);
580 if (str
[len
- 1] == '/')
582 setenv ("PWD", str
, 1);
585 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
587 putenv (old_pwd
); /* restore previous value */
589 #else /* not MSDOS */
591 /* Waits for process completion */
592 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
593 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
595 write (1, "Can't execute subshell", 22);
596 #else /* not WINDOWSNT */
597 execlp (sh
, sh
, (char *) 0);
598 ignore_value (write (1, "Can't execute subshell", 22));
600 #endif /* not WINDOWSNT */
601 #endif /* not MSDOS */
604 /* Do this now if we did not do it before. */
606 save_signal_handlers (saved_handlers
);
607 synch_process_alive
= 1;
611 wait_for_termination (pid
);
613 restore_signal_handlers (saved_handlers
);
614 synch_process_alive
= 0;
618 save_signal_handlers (struct save_signal
*saved_handlers
)
620 while (saved_handlers
->code
)
622 saved_handlers
->handler
623 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
629 restore_signal_handlers (struct save_signal
*saved_handlers
)
631 while (saved_handlers
->code
)
633 signal (saved_handlers
->code
, saved_handlers
->handler
);
639 /* If SIGIO is broken, don't do anything. */
656 unrequest_sigio (void)
663 static int old_fcntl_flags
[MAXDESC
];
669 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
670 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
672 interrupts_deferred
= 0;
679 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
683 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
684 /* XXX Uhm, FASYNC is not used anymore here. */
685 /* XXX Yeah, but you need it for SIGIO, don't you? */
694 sigunblock (sigmask (SIGWINCH
));
696 sigunblock (sigmask (SIGIO
));
698 interrupts_deferred
= 0;
702 unrequest_sigio (void)
707 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
713 sigblock (sigmask (SIGWINCH
));
715 sigblock (sigmask (SIGIO
));
716 interrupts_deferred
= 1;
719 #else /* no FASYNC */
725 if (noninteractive
|| read_socket_hook
)
728 croak ("request_sigio");
732 unrequest_sigio (void)
734 if (noninteractive
|| read_socket_hook
)
737 croak ("unrequest_sigio");
746 /* Getting and setting emacs_tty structures. */
748 /* Set *TC to the parameters associated with the terminal FD.
749 Return zero if all's well, or -1 if we ran into an error we
750 couldn't deal with. */
752 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
754 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
756 /* We have those nifty POSIX tcmumbleattr functions. */
757 memset (&settings
->main
, 0, sizeof (settings
->main
));
758 if (tcgetattr (fd
, &settings
->main
) < 0)
762 /* We have survived the tempest. */
767 /* Set the parameters of the tty on FD according to the contents of
768 *SETTINGS. If FLUSHP is non-zero, we discard input.
769 Return 0 if all went well, and -1 if anything failed. */
772 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
774 /* Set the primary parameters - baud rate, character size, etcetera. */
777 /* We have those nifty POSIX tcmumbleattr functions.
778 William J. Smith <wjs@wiis.wang.com> writes:
779 "POSIX 1003.1 defines tcsetattr to return success if it was
780 able to perform any of the requested actions, even if some
781 of the requested actions could not be performed.
782 We must read settings back to ensure tty setup properly.
783 AIX requires this to keep tty from hanging occasionally." */
784 /* This make sure that we don't loop indefinitely in here. */
785 for (i
= 0 ; i
< 10 ; i
++)
786 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
797 memset (&new, 0, sizeof (new));
798 /* Get the current settings, and see if they're what we asked for. */
799 tcgetattr (fd
, &new);
800 /* We cannot use memcmp on the whole structure here because under
801 * aix386 the termios structure has some reserved field that may
804 if ( new.c_iflag
== settings
->main
.c_iflag
805 && new.c_oflag
== settings
->main
.c_oflag
806 && new.c_cflag
== settings
->main
.c_cflag
807 && new.c_lflag
== settings
->main
.c_lflag
808 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
815 /* We have survived the tempest. */
822 static int old_fcntl_owner
[MAXDESC
];
823 #endif /* F_SETOWN */
825 /* This may also be defined in stdio,
826 but if so, this does no harm,
827 and using the same name avoids wasting the other one's space. */
830 unsigned char _sobuf
[BUFSIZ
+8];
835 /* Initialize the terminal mode on all tty devices that are currently
839 init_all_sys_modes (void)
841 struct tty_display_info
*tty
;
842 for (tty
= tty_list
; tty
; tty
= tty
->next
)
843 init_sys_modes (tty
);
846 /* Initialize the terminal mode on the given tty device. */
849 init_sys_modes (struct tty_display_info
*tty_out
)
851 struct emacs_tty tty
;
852 Lisp_Object terminal
;
854 Vtty_erase_char
= Qnil
;
859 if (!tty_out
->output
)
860 return; /* The tty is suspended. */
862 if (! tty_out
->old_tty
)
863 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
865 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
867 tty
= *tty_out
->old_tty
;
869 #if !defined (DOS_NT)
870 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
872 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
873 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
874 #ifdef INLCR /* I'm just being cautious,
875 since I can't check how widespread INLCR is--rms. */
876 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
879 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
881 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
882 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
884 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
886 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
887 if (tty_out
->flow_control
)
889 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
891 tty
.main
.c_iflag
&= ~IXANY
;
895 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
896 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
898 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
900 if (tty_out
->meta_key
)
902 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
903 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
907 XSETTERMINAL(terminal
, tty_out
->terminal
);
908 if (!NILP (Fcontrolling_tty_p (terminal
)))
910 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
911 /* Set up C-g for both SIGQUIT and SIGINT.
912 We don't know which we will get, but we handle both alike
913 so which one it really gives us does not matter. */
914 tty
.main
.c_cc
[VQUIT
] = quit_char
;
918 /* We normally don't get interrupt or quit signals from tty
919 devices other than our controlling terminal; therefore,
920 we must handle C-g as normal input. Unfortunately, this
921 means that the interrupt and quit feature must be
922 disabled on secondary ttys, or we would not even see the
925 Note that even though emacsclient could have special code
926 to pass SIGINT to Emacs, we should _not_ enable
927 interrupt/quit keys for emacsclient frames. This means
928 that we can't break out of loops in C code from a
929 secondary tty frame, but we can always decide what
930 display the C-g came from, which is more important from a
931 usability point of view. (Consider the case when two
932 people work together using the same Emacs instance.) */
933 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
934 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
936 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
937 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
939 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
944 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
947 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
949 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
950 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
953 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
956 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
957 #endif /* VREPRINT */
959 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
962 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
963 #endif /* VDISCARD */
965 if (tty_out
->flow_control
)
968 tty
.main
.c_cc
[VSTART
] = '\021';
971 tty
.main
.c_cc
[VSTOP
] = '\023';
977 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
980 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
985 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
986 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
987 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
988 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
989 if (tty_out
->flow_control
)
992 tty
.main
.c_cc
[VSTART
] = '\021';
995 tty
.main
.c_cc
[VSTOP
] = '\023';
998 /* Also, PTY overloads NUL and BREAK.
999 don't ignore break, but don't signal either, so it looks like NUL.
1000 This really serves a purpose only if running in an XTERM window
1001 or via TELNET or the like, but does no harm elsewhere. */
1002 tty
.main
.c_iflag
&= ~IGNBRK
;
1003 tty
.main
.c_iflag
&= ~BRKINT
;
1005 #endif /* not DOS_NT */
1007 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1008 if (!tty_out
->term_initted
)
1009 internal_terminal_init ();
1010 dos_ttraw (tty_out
);
1013 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1015 /* This code added to insure that, if flow-control is not to be used,
1016 we have an unlocked terminal at the start. */
1019 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1022 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1025 #if !defined (DOS_NT)
1027 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1032 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1033 if (interrupt_input
)
1035 old_fcntl_owner
[fileno (tty_out
->input
)] =
1036 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1037 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1038 init_sigio (fileno (tty_out
->input
));
1040 if (gpm_tty
== tty_out
)
1042 /* Arrange for mouse events to give us SIGIO signals. */
1043 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1044 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1045 init_sigio (gpm_fd
);
1047 #endif /* HAVE_GPM */
1049 #endif /* F_GETOWN */
1050 #endif /* F_SETFL */
1053 /* This symbol is defined on recent USG systems.
1054 Someone says without this call USG won't really buffer the file
1055 even with a call to setbuf. */
1056 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1058 setbuf (tty_out
->output
, (char *) _sobuf
);
1061 if (tty_out
->terminal
->set_terminal_modes_hook
)
1062 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1064 if (!tty_out
->term_initted
)
1066 Lisp_Object tail
, frame
;
1067 FOR_EACH_FRAME (tail
, frame
)
1069 /* XXX This needs to be revised. */
1070 if (FRAME_TERMCAP_P (XFRAME (frame
))
1071 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1072 init_frame_faces (XFRAME (frame
));
1076 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1078 /* We used to call "direct_output_forward_char(0)" here,
1079 but it's not clear why, since it may not do anything anyway. */
1083 Lisp_Object tail
, frame
;
1085 FOR_EACH_FRAME (tail
, frame
)
1087 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1088 || FRAME_MSDOS_P (XFRAME (frame
)))
1089 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1090 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1094 tty_out
->term_initted
= 1;
1097 /* Return nonzero if safe to use tabs in output.
1098 At the time this is called, init_sys_modes has not been done yet. */
1101 tabs_safe_p (int fd
)
1103 struct emacs_tty etty
;
1105 emacs_get_tty (fd
, &etty
);
1108 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1109 #else /* not TABDLY */
1111 #endif /* not TABDLY */
1117 /* Get terminal size from system.
1118 Store number of lines into *HEIGHTP and width into *WIDTHP.
1119 We store 0 if there's no valid information. */
1122 get_tty_size (int fd
, int *widthp
, int *heightp
)
1124 #if defined TIOCGWINSZ
1127 struct winsize size
;
1129 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1130 *widthp
= *heightp
= 0;
1133 *widthp
= size
.ws_col
;
1134 *heightp
= size
.ws_row
;
1137 #elif defined TIOCGSIZE
1139 /* SunOS - style. */
1140 struct ttysize size
;
1142 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1143 *widthp
= *heightp
= 0;
1146 *widthp
= size
.ts_cols
;
1147 *heightp
= size
.ts_lines
;
1150 #elif defined WINDOWSNT
1152 CONSOLE_SCREEN_BUFFER_INFO info
;
1153 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1155 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1156 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1159 *widthp
= *heightp
= 0;
1163 *widthp
= ScreenCols ();
1164 *heightp
= ScreenRows ();
1166 #else /* system doesn't know size */
1174 /* Set the logical window size associated with descriptor FD
1175 to HEIGHT and WIDTH. This is used mainly with ptys. */
1178 set_window_size (int fd
, int height
, int width
)
1183 struct winsize size
;
1184 size
.ws_row
= height
;
1185 size
.ws_col
= width
;
1187 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1188 return 0; /* error */
1195 /* SunOS - style. */
1196 struct ttysize size
;
1197 size
.ts_lines
= height
;
1198 size
.ts_cols
= width
;
1200 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1206 #endif /* not SunOS-style */
1207 #endif /* not BSD-style */
1212 /* Prepare all terminal devices for exiting Emacs. */
1215 reset_all_sys_modes (void)
1217 struct tty_display_info
*tty
;
1218 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1219 reset_sys_modes (tty
);
1222 /* Prepare the terminal for closing it; move the cursor to the
1223 bottom of the frame, turn off interrupt-driven I/O, etc. */
1226 reset_sys_modes (struct tty_display_info
*tty_out
)
1233 if (!tty_out
->term_initted
)
1236 if (!tty_out
->output
)
1237 return; /* The tty is suspended. */
1239 /* Go to and clear the last line of the terminal. */
1241 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1243 /* Code adapted from tty_clear_end_of_line. */
1244 if (tty_out
->TS_clr_line
)
1246 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1249 { /* have to do it the hard way */
1251 tty_turn_off_insert (tty_out
);
1253 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1255 fputc (' ', tty_out
->output
);
1259 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1260 fflush (tty_out
->output
);
1262 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1263 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1266 /* Avoid possible loss of output when changing terminal modes. */
1267 fsync (fileno (tty_out
->output
));
1271 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1272 if (interrupt_input
)
1274 reset_sigio (fileno (tty_out
->input
));
1275 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1276 old_fcntl_owner
[fileno (tty_out
->input
)]);
1278 #endif /* F_SETOWN */
1280 fcntl (fileno (tty_out
->input
), F_SETFL
,
1281 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1283 #endif /* F_SETFL */
1285 if (tty_out
->old_tty
)
1286 while (emacs_set_tty (fileno (tty_out
->input
),
1287 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1290 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1298 /* Set up the proper status flags for use of a pty. */
1303 /* I'm told that TOICREMOTE does not mean control chars
1304 "can't be sent" but rather that they don't have
1305 input-editing or signaling effects.
1306 That should be good, because we have other ways
1307 to do those things in Emacs.
1308 However, telnet mode seems not to work on 4.2.
1309 So TIOCREMOTE is turned off now. */
1311 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1312 will hang. In particular, the "timeout" feature (which
1313 causes a read to return if there is no data available)
1314 does this. Also it is known that telnet mode will hang
1315 in such a way that Emacs must be stopped (perhaps this
1316 is the same problem).
1318 If TIOCREMOTE is turned off, then there is a bug in
1319 hp-ux which sometimes loses data. Apparently the
1320 code which blocks the master process when the internal
1321 buffer fills up does not work. Other than this,
1322 though, everything else seems to work fine.
1324 Since the latter lossage is more benign, we may as well
1325 lose that way. -- cph */
1327 #if defined (UNIX98_PTYS)
1330 ioctl (fd
, FIONBIO
, &on
);
1335 #endif /* HAVE_PTYS */
1338 #include <sys/socket.h>
1340 #endif /* HAVE_SOCKETS */
1343 #ifndef HAVE_H_ERRNO
1346 #endif /* TRY_AGAIN */
1349 init_system_name (void)
1351 #ifndef HAVE_GETHOSTNAME
1354 Vsystem_name
= build_string (uts
.nodename
);
1355 #else /* HAVE_GETHOSTNAME */
1356 unsigned int hostname_size
= 256;
1357 char *hostname
= alloca (hostname_size
);
1359 /* Try to get the host name; if the buffer is too short, try
1360 again. Apparently, the only indication gethostname gives of
1361 whether the buffer was large enough is the presence or absence
1362 of a '\0' in the string. Eech. */
1365 gethostname (hostname
, hostname_size
- 1);
1366 hostname
[hostname_size
- 1] = '\0';
1368 /* Was the buffer large enough for the '\0'? */
1369 if (strlen (hostname
) < hostname_size
- 1)
1372 hostname_size
<<= 1;
1373 hostname
= alloca (hostname_size
);
1376 /* Turn the hostname into the official, fully-qualified hostname.
1377 Don't do this if we're going to dump; this can confuse system
1378 libraries on some machines and make the dumped emacs core dump. */
1381 #endif /* not CANNOT_DUMP */
1382 if (! strchr (hostname
, '.'))
1385 #ifdef HAVE_GETADDRINFO
1386 struct addrinfo
*res
;
1387 struct addrinfo hints
;
1390 memset (&hints
, 0, sizeof (hints
));
1391 hints
.ai_socktype
= SOCK_STREAM
;
1392 hints
.ai_flags
= AI_CANONNAME
;
1394 for (count
= 0;; count
++)
1396 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1397 || ret
!= EAI_AGAIN
)
1402 Fsleep_for (make_number (1), Qnil
);
1407 struct addrinfo
*it
= res
;
1410 char *fqdn
= it
->ai_canonname
;
1411 if (fqdn
&& strchr (fqdn
, '.')
1412 && strcmp (fqdn
, "localhost.localdomain") != 0)
1418 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1419 strcpy (hostname
, it
->ai_canonname
);
1423 #else /* !HAVE_GETADDRINFO */
1425 for (count
= 0;; count
++)
1431 hp
= gethostbyname (hostname
);
1433 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1440 Fsleep_for (make_number (1), Qnil
);
1445 char *fqdn
= (char *) hp
->h_name
;
1447 if (!strchr (fqdn
, '.'))
1449 /* We still don't have a fully qualified domain name.
1450 Try to find one in the list of alternate names */
1451 char **alias
= hp
->h_aliases
;
1453 && (!strchr (*alias
, '.')
1454 || !strcmp (*alias
, "localhost.localdomain")))
1461 #endif /* !HAVE_GETADDRINFO */
1463 #endif /* HAVE_SOCKETS */
1464 Vsystem_name
= build_string (hostname
);
1465 #endif /* HAVE_GETHOSTNAME */
1468 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1469 if (*p
== ' ' || *p
== '\t')
1474 /* POSIX signals support - DJB */
1475 /* Anyone with POSIX signals should have ANSI C declarations */
1477 sigset_t empty_mask
;
1482 sys_signal (int signal_number
, signal_handler_t action
)
1484 struct sigaction new_action
, old_action
;
1485 sigemptyset (&new_action
.sa_mask
);
1486 new_action
.sa_handler
= action
;
1487 new_action
.sa_flags
= 0;
1488 #if defined (SA_RESTART)
1489 /* Emacs mostly works better with restartable system services. If this
1490 flag exists, we probably want to turn it on here.
1491 However, on some systems (only hpux11 at present) this resets the
1492 timeout of `select' which means that `select' never finishes if
1493 it keeps getting signals.
1494 We define BROKEN_SA_RESTART on those systems. */
1495 /* It's not clear why the comment above says "mostly works better". --Stef
1496 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1497 for pending input so we need long-running syscalls to be interrupted
1498 after a signal that sets the interrupt_input_pending flag. */
1499 /* Non-interactive keyboard input goes through stdio, where we always
1500 want restartable system calls. */
1501 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1504 new_action
.sa_flags
= SA_RESTART
;
1506 sigaction (signal_number
, &new_action
, &old_action
);
1507 return (old_action
.sa_handler
);
1510 #endif /* WINDOWSNT */
1513 /* If we're compiling with GCC, we don't need this function, since it
1514 can be written as a macro. */
1516 sys_sigmask (int sig
)
1519 sigemptyset (&mask
);
1520 sigaddset (&mask
, sig
);
1525 /* I'd like to have these guys return pointers to the mask storage in here,
1526 but there'd be trouble if the code was saving multiple masks. I'll be
1527 safe and pass the structure. It normally won't be more than 2 bytes
1531 sys_sigblock (sigset_t new_mask
)
1534 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1539 sys_sigunblock (sigset_t new_mask
)
1542 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1547 sys_sigsetmask (sigset_t new_mask
)
1550 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1554 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1555 pthread_t main_thread
;
1558 /* If we are on the main thread, handle the signal SIG with HANDLER.
1559 Otherwise, redirect the signal to the main thread, blocking it from
1560 this thread. POSIX says any thread can receive a signal that is
1561 associated with a process, process group, or asynchronous event.
1562 On GNU/Linux that is not true, but for other systems (FreeBSD at
1565 handle_on_main_thread (int sig
, signal_handler_t handler
)
1567 /* Preserve errno, to avoid race conditions with signal handlers that
1568 might change errno. Races can occur even in single-threaded hosts. */
1569 int old_errno
= errno
;
1571 bool on_main_thread
= true;
1572 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1573 if (! pthread_equal (pthread_self (), main_thread
))
1576 sigemptyset (&blocked
);
1577 sigaddset (&blocked
, sig
);
1578 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1579 pthread_kill (main_thread
, sig
);
1580 on_main_thread
= false;
1589 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1590 static char *my_sys_siglist
[NSIG
];
1594 # define sys_siglist my_sys_siglist
1600 sigemptyset (&empty_mask
);
1602 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1603 main_thread
= pthread_self ();
1606 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1610 sys_siglist
[SIGABRT
] = "Aborted";
1613 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1616 sys_siglist
[SIGALRM
] = "Alarm clock";
1619 sys_siglist
[SIGBUS
] = "Bus error";
1622 sys_siglist
[SIGCLD
] = "Child status changed";
1625 sys_siglist
[SIGCHLD
] = "Child status changed";
1628 sys_siglist
[SIGCONT
] = "Continued";
1631 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1634 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1637 sys_siglist
[SIGEMT
] = "Emulation trap";
1640 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1643 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1646 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1649 sys_siglist
[SIGHUP
] = "Hangup";
1652 sys_siglist
[SIGILL
] = "Illegal instruction";
1655 sys_siglist
[SIGINT
] = "Interrupt";
1658 sys_siglist
[SIGIO
] = "I/O possible";
1661 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1664 sys_siglist
[SIGIOT
] = "IOT trap";
1667 sys_siglist
[SIGKILL
] = "Killed";
1670 sys_siglist
[SIGLOST
] = "Resource lost";
1673 sys_siglist
[SIGLWP
] = "SIGLWP";
1676 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1679 sys_siglist
[SIGWIND
] = "SIGPHONE";
1682 sys_siglist
[SIGPIPE
] = "Broken pipe";
1685 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1688 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1691 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1694 sys_siglist
[SIGPWR
] = "Power-fail restart";
1697 sys_siglist
[SIGQUIT
] = "Quit";
1700 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1703 sys_siglist
[SIGSAK
] = "Secure attention";
1706 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1709 sys_siglist
[SIGSOUND
] = "Sound completed";
1712 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1715 sys_siglist
[SIGSTP
] = "Stopped (user)";
1718 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1721 sys_siglist
[SIGTERM
] = "Terminated";
1724 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1727 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1730 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1733 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1736 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1739 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1742 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1745 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1748 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1751 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1754 sys_siglist
[SIGWINCH
] = "Window size changed";
1757 sys_siglist
[SIGWIND
] = "SIGWIND";
1760 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1763 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1766 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1775 /* Figure out how many bits the system's random number generator uses.
1776 `random' and `lrand48' are assumed to return 31 usable bits.
1777 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1778 so we'll shift it and treat it like the 15-bit USG `rand'. */
1782 # define RAND_BITS 31
1783 # else /* !HAVE_RANDOM */
1784 # ifdef HAVE_LRAND48
1785 # define RAND_BITS 31
1786 # define random lrand48
1787 # else /* !HAVE_LRAND48 */
1788 # define RAND_BITS 15
1789 # if RAND_MAX == 32767
1790 # define random rand
1791 # else /* RAND_MAX != 32767 */
1792 # if RAND_MAX == 2147483647
1793 # define random() (rand () >> 16)
1794 # else /* RAND_MAX != 2147483647 */
1796 # define random rand
1798 # define random() (rand () >> 16)
1800 # endif /* RAND_MAX != 2147483647 */
1801 # endif /* RAND_MAX != 32767 */
1802 # endif /* !HAVE_LRAND48 */
1803 # endif /* !HAVE_RANDOM */
1804 #endif /* !RAND_BITS */
1807 seed_random (void *seed
, ptrdiff_t seed_size
)
1809 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1810 unsigned int arg
= 0;
1814 unsigned char *argp
= (unsigned char *) &arg
;
1815 unsigned char *seedp
= seed
;
1817 for (i
= 0; i
< seed_size
; i
++)
1818 argp
[i
% sizeof arg
] ^= seedp
[i
];
1822 # ifdef HAVE_LRAND48
1833 EMACS_TIME t
= current_emacs_time ();
1834 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1835 seed_random (&v
, sizeof v
);
1839 * Return a nonnegative random integer out of whatever we've got.
1840 * It contains enough bits to make a random (signed) Emacs fixnum.
1841 * This suffices even for a 64-bit architecture with a 15-bit rand.
1848 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1849 val
= (random () ^ (val
<< RAND_BITS
)
1850 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1851 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1852 return val
& INTMASK
;
1855 #ifndef HAVE_SNPRINTF
1856 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1858 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1860 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1861 ptrdiff_t nbytes
= size
- 1;
1866 va_start (ap
, format
);
1867 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1871 if (nbytes
== size
- 1)
1873 /* Calculate the length of the string that would have been created
1874 had the buffer been large enough. */
1875 char stackbuf
[4000];
1877 ptrdiff_t bsize
= sizeof stackbuf
;
1878 va_start (ap
, format
);
1879 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1885 if (INT_MAX
< nbytes
)
1898 /* If a backtrace is available, output the top lines of it to stderr.
1899 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
1900 This function may be called from a signal handler, so it should
1901 not invoke async-unsafe functions like malloc. */
1903 emacs_backtrace (int backtrace_limit
)
1905 enum { BACKTRACE_LIMIT_MAX
= 500 };
1906 void *buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1907 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
1908 int npointers
= backtrace (buffer
, bounded_limit
+ 1);
1910 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
1911 backtrace_symbols_fd (buffer
, bounded_limit
, STDERR_FILENO
);
1912 if (bounded_limit
< npointers
)
1913 ignore_value (write (STDERR_FILENO
, "...\n", 4));
1917 /* Using emacs_abort lets GDB return from a breakpoint here. */
1921 fatal_error_backtrace (SIGABRT
, 10);
1926 emacs_open (const char *path
, int oflag
, int mode
)
1928 register int rtnval
;
1930 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1931 && (errno
== EINTR
))
1937 emacs_close (int fd
)
1940 register int rtnval
;
1942 while ((rtnval
= close (fd
)) == -1
1943 && (errno
== EINTR
))
1946 /* If close is interrupted SunOS 4.1 may or may not have closed the
1947 file descriptor. If it did the second close will fail with
1948 errno = EBADF. That means we have succeeded. */
1949 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1955 /* Maximum number of bytes to read or write in a single system call.
1956 This works around a serious bug in Linux kernels before 2.6.16; see
1957 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1958 It's likely to work around similar bugs in other operating systems, so do it
1959 on all platforms. Round INT_MAX down to a page size, with the conservative
1960 assumption that page sizes are at most 2**18 bytes (any kernel with a
1961 page size larger than that shouldn't have the bug). */
1962 #ifndef MAX_RW_COUNT
1963 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1966 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1967 Return the number of bytes read, which might be less than NBYTE.
1968 On error, set errno and return -1. */
1970 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1972 register ssize_t rtnval
;
1974 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1975 passes a size that large to emacs_read. */
1977 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1978 && (errno
== EINTR
))
1983 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1984 or if a partial write occurs. Return the number of bytes written, setting
1985 errno if this is less than NBYTE. */
1987 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1990 ptrdiff_t bytes_written
;
1996 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2003 /* I originally used `QUIT' but that might causes files to
2004 be truncated if you hit C-g in the middle of it. --Stef */
2005 process_pending_signals ();
2015 bytes_written
+= rtnval
;
2018 return (bytes_written
);
2021 static struct allocator
const emacs_norealloc_allocator
=
2022 { xmalloc
, NULL
, xfree
, memory_full
};
2024 /* Get the symbolic link value of FILENAME. Return a pointer to a
2025 NUL-terminated string. If readlink fails, return NULL and set
2026 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
2027 Otherwise, allocate memory and return a pointer to that memory. If
2028 memory allocation fails, diagnose and fail without returning. If
2029 successful, store the length of the symbolic link into *LINKLEN. */
2031 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
2033 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
2034 &emacs_norealloc_allocator
, careadlinkatcwd
);
2039 * All of the following are for USG.
2041 * On USG systems the system calls are INTERRUPTIBLE by signals
2042 * that the user program has elected to catch. Thus the system call
2043 * must be retried in these cases. To handle this without massive
2044 * changes in the source code, we remap the standard system call names
2045 * to names for our own functions in sysdep.c that do the system call
2046 * with retries. Actually, for portability reasons, it is good
2047 * programming practice, as this example shows, to limit all actual
2048 * system calls to a single occurrence in the source. Sure, this
2049 * adds an extra level of function call overhead but it is almost
2050 * always negligible. Fred Fish, Unisoft Systems Inc.
2054 * Warning, this function may not duplicate 4.2 action properly
2055 * under error conditions.
2058 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
2061 /* In 4.1, param.h fails to define this. */
2062 #define MAXPATHLEN 1024
2066 getwd (char *pathname
)
2068 char *npath
, *spath
;
2069 extern char *getcwd (char *, size_t);
2071 BLOCK_INPUT
; /* getcwd uses malloc */
2072 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2078 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2079 up to first slash. Should be harmless on other systems. */
2080 while (*npath
&& *npath
!= '/')
2082 strcpy (pathname
, npath
);
2083 free (spath
); /* getcwd uses malloc */
2088 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2091 * This function will go away as soon as all the stubs fixed. (fnf)
2095 croak (char *badfunc
)
2097 printf ("%s not yet implemented\r\n", badfunc
);
2098 reset_all_sys_modes ();
2104 /* Directory routines for systems that don't have them. */
2106 #ifdef HAVE_DIRENT_H
2110 #if !defined (HAVE_CLOSEDIR)
2113 closedir (DIR *dirp
/* stream from opendir */)
2117 rtnval
= emacs_close (dirp
->dd_fd
);
2122 #endif /* not HAVE_CLOSEDIR */
2123 #endif /* HAVE_DIRENT_H */
2126 /* Return a struct timeval that is roughly equivalent to T.
2127 Use the least timeval not less than T.
2128 Return an extremal value if the result would overflow. */
2130 make_timeval (EMACS_TIME t
)
2133 tv
.tv_sec
= t
.tv_sec
;
2134 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2136 if (t
.tv_nsec
% 1000 != 0)
2138 if (tv
.tv_usec
< 999999)
2140 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2150 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2151 ATIME and MTIME, respectively.
2152 FD must be either negative -- in which case it is ignored --
2153 or a file descriptor that is open on FILE.
2154 If FD is nonnegative, then FILE can be NULL. */
2156 set_file_times (int fd
, const char *filename
,
2157 EMACS_TIME atime
, EMACS_TIME mtime
)
2159 struct timespec timespec
[2];
2160 timespec
[0] = atime
;
2161 timespec
[1] = mtime
;
2162 return fdutimens (fd
, filename
, timespec
);
2165 #ifndef HAVE_STRSIGNAL
2167 strsignal (int code
)
2171 if (0 <= code
&& code
< NSIG
)
2173 /* Cast to suppress warning if the table has const char *. */
2174 signame
= (char *) sys_siglist
[code
];
2179 #endif /* HAVE_STRSIGNAL */
2182 /* For make-serial-process */
2184 serial_open (char *port
)
2188 fd
= emacs_open ((char*) port
,
2201 error ("Could not open %s: %s",
2202 port
, emacs_strerror (errno
));
2205 ioctl (fd
, TIOCEXCL
, (char *) 0);
2211 #if !defined (HAVE_CFMAKERAW)
2212 /* Workaround for targets which are missing cfmakeraw. */
2213 /* Pasted from man page. */
2215 cfmakeraw (struct termios
*termios_p
)
2217 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2218 termios_p
->c_oflag
&= ~OPOST
;
2219 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2220 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2221 termios_p
->c_cflag
|= CS8
;
2223 #endif /* !defined (HAVE_CFMAKERAW */
2225 #if !defined (HAVE_CFSETSPEED)
2226 /* Workaround for targets which are missing cfsetspeed. */
2228 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2230 return (cfsetispeed (termios_p
, vitesse
)
2231 + cfsetospeed (termios_p
, vitesse
));
2235 /* For serial-process-configure */
2237 serial_configure (struct Lisp_Process
*p
,
2238 Lisp_Object contact
)
2240 Lisp_Object childp2
= Qnil
;
2241 Lisp_Object tem
= Qnil
;
2242 struct termios attr
;
2244 char summary
[4] = "???"; /* This usually becomes "8N1". */
2246 childp2
= Fcopy_sequence (p
->childp
);
2248 /* Read port attributes and prepare default configuration. */
2249 err
= tcgetattr (p
->outfd
, &attr
);
2251 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2253 #if defined (CLOCAL)
2254 attr
.c_cflag
|= CLOCAL
;
2257 attr
.c_cflag
|= CREAD
;
2260 /* Configure speed. */
2261 if (!NILP (Fplist_member (contact
, QCspeed
)))
2262 tem
= Fplist_get (contact
, QCspeed
);
2264 tem
= Fplist_get (p
->childp
, QCspeed
);
2266 err
= cfsetspeed (&attr
, XINT (tem
));
2268 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2269 emacs_strerror (errno
));
2270 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2272 /* Configure bytesize. */
2273 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2274 tem
= Fplist_get (contact
, QCbytesize
);
2276 tem
= Fplist_get (p
->childp
, QCbytesize
);
2278 tem
= make_number (8);
2280 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2281 error (":bytesize must be nil (8), 7, or 8");
2282 summary
[0] = XINT (tem
) + '0';
2283 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2284 attr
.c_cflag
&= ~CSIZE
;
2285 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2287 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2288 if (XINT (tem
) != 8)
2289 error ("Bytesize cannot be changed");
2291 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2293 /* Configure parity. */
2294 if (!NILP (Fplist_member (contact
, QCparity
)))
2295 tem
= Fplist_get (contact
, QCparity
);
2297 tem
= Fplist_get (p
->childp
, QCparity
);
2298 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2299 error (":parity must be nil (no parity), `even', or `odd'");
2300 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2301 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2302 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2307 else if (EQ (tem
, Qeven
))
2310 attr
.c_cflag
|= PARENB
;
2311 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2313 else if (EQ (tem
, Qodd
))
2316 attr
.c_cflag
|= (PARENB
| PARODD
);
2317 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2320 /* Don't error on no parity, which should be set by cfmakeraw. */
2322 error ("Parity cannot be configured");
2324 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2326 /* Configure stopbits. */
2327 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2328 tem
= Fplist_get (contact
, QCstopbits
);
2330 tem
= Fplist_get (p
->childp
, QCstopbits
);
2332 tem
= make_number (1);
2334 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2335 error (":stopbits must be nil (1 stopbit), 1, or 2");
2336 summary
[2] = XINT (tem
) + '0';
2337 #if defined (CSTOPB)
2338 attr
.c_cflag
&= ~CSTOPB
;
2339 if (XINT (tem
) == 2)
2340 attr
.c_cflag
|= CSTOPB
;
2342 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2343 if (XINT (tem
) != 1)
2344 error ("Stopbits cannot be configured");
2346 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2348 /* Configure flowcontrol. */
2349 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2350 tem
= Fplist_get (contact
, QCflowcontrol
);
2352 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2353 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2354 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2355 #if defined (CRTSCTS)
2356 attr
.c_cflag
&= ~CRTSCTS
;
2358 #if defined (CNEW_RTSCTS)
2359 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2361 #if defined (IXON) && defined (IXOFF)
2362 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2366 /* Already configured. */
2368 else if (EQ (tem
, Qhw
))
2370 #if defined (CRTSCTS)
2371 attr
.c_cflag
|= CRTSCTS
;
2372 #elif defined (CNEW_RTSCTS)
2373 attr
.c_cflag
|= CNEW_RTSCTS
;
2375 error ("Hardware flowcontrol (RTS/CTS) not supported");
2378 else if (EQ (tem
, Qsw
))
2380 #if defined (IXON) && defined (IXOFF)
2381 attr
.c_iflag
|= (IXON
| IXOFF
);
2383 error ("Software flowcontrol (XON/XOFF) not supported");
2386 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2388 /* Activate configuration. */
2389 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2391 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2393 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2394 pset_childp (p
, childp2
);
2396 #endif /* not DOS_NT */
2398 /* System depended enumeration of and access to system processes a-la ps(1). */
2402 /* Process enumeration and access via /proc. */
2405 list_system_processes (void)
2407 Lisp_Object procdir
, match
, proclist
, next
;
2408 struct gcpro gcpro1
, gcpro2
;
2409 register Lisp_Object tail
;
2411 GCPRO2 (procdir
, match
);
2412 /* For every process on the system, there's a directory in the
2413 "/proc" pseudo-directory whose name is the numeric ID of that
2415 procdir
= build_string ("/proc");
2416 match
= build_string ("[0-9]+");
2417 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2419 /* `proclist' gives process IDs as strings. Destructively convert
2420 each string into a number. */
2421 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2424 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2428 /* directory_files_internal returns the files in reverse order; undo
2430 proclist
= Fnreverse (proclist
);
2434 #elif defined BSD_SYSTEM
2437 list_system_processes (void)
2439 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2440 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2442 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2445 struct kinfo_proc
*procs
;
2448 struct gcpro gcpro1
;
2449 Lisp_Object proclist
= Qnil
;
2451 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2454 procs
= xmalloc (len
);
2455 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2462 len
/= sizeof (struct kinfo_proc
);
2463 for (i
= 0; i
< len
; i
++)
2465 #if defined DARWIN_OS || defined __NetBSD__
2466 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2467 #elif defined __OpenBSD__
2468 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2470 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2480 /* The WINDOWSNT implementation is in w32.c.
2481 The MSDOS implementation is in dosfns.c. */
2482 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2485 list_system_processes (void)
2490 #endif /* !defined (WINDOWSNT) */
2494 time_from_jiffies (unsigned long long tval
, long hz
)
2496 unsigned long long s
= tval
/ hz
;
2497 unsigned long long frac
= tval
% hz
;
2500 if (TYPE_MAXIMUM (time_t) < s
)
2502 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2503 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2504 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2507 /* This is reachable only in the unlikely case that HZ * HZ
2508 exceeds ULLONG_MAX. It calculates an approximation that is
2509 guaranteed to be in range. */
2510 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2511 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2512 ns
= frac
/ hz_per_ns
;
2515 return make_emacs_time (s
, ns
);
2519 ltime_from_jiffies (unsigned long long tval
, long hz
)
2521 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2522 return make_lisp_time (t
);
2529 EMACS_TIME up
= make_emacs_time (0, 0);
2532 fup
= fopen ("/proc/uptime", "r");
2536 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2537 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2539 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2540 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2541 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2544 if (TYPE_MAXIMUM (time_t) < upsec
)
2546 upsec
= TYPE_MAXIMUM (time_t);
2547 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2551 int upfraclen
= upfrac_end
- upfrac_start
;
2552 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2554 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2556 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2558 up
= make_emacs_time (upsec
, upfrac
);
2567 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2568 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2571 procfs_ttyname (int rdev
)
2574 char name
[PATH_MAX
];
2577 fdev
= fopen ("/proc/tty/drivers", "r");
2582 unsigned long minor_beg
, minor_end
;
2583 char minor
[25]; /* 2 32-bit numbers + dash */
2586 while (!feof (fdev
) && !ferror (fdev
))
2588 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2589 && major
== MAJOR (rdev
))
2591 minor_beg
= strtoul (minor
, &endp
, 0);
2593 minor_end
= minor_beg
;
2594 else if (*endp
== '-')
2595 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2599 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2601 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2609 return build_string (name
);
2612 static unsigned long
2613 procfs_get_total_memory (void)
2616 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2619 fmem
= fopen ("/proc/meminfo", "r");
2623 unsigned long entry_value
;
2624 char entry_name
[20]; /* the longest I saw is 13+1 */
2626 while (!feof (fmem
) && !ferror (fmem
))
2628 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2629 && strcmp (entry_name
, "MemTotal:") == 0)
2631 retval
= entry_value
;
2642 system_process_attributes (Lisp_Object pid
)
2644 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2648 long clocks_per_sec
;
2650 char procbuf
[1025], *p
, *q
;
2653 static char const default_cmd
[] = "???";
2654 const char *cmd
= default_cmd
;
2655 int cmdsize
= sizeof default_cmd
- 1;
2656 char *cmdline
= NULL
;
2657 ptrdiff_t cmdline_size
;
2660 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2663 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2664 long priority
, niceness
, rss
;
2665 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2666 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2668 Lisp_Object attrs
= Qnil
;
2669 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2670 struct gcpro gcpro1
, gcpro2
;
2672 CHECK_NUMBER_OR_FLOAT (pid
);
2673 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2674 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2675 if (stat (procfn
, &st
) < 0)
2678 GCPRO2 (attrs
, decoded_cmd
);
2682 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2684 pw
= getpwuid (uid
);
2687 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2690 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2692 gr
= getgrgid (gid
);
2695 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2697 strcpy (fn
, procfn
);
2698 procfn_end
= fn
+ strlen (fn
);
2699 strcpy (procfn_end
, "/stat");
2700 fd
= emacs_open (fn
, O_RDONLY
, 0);
2701 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2703 procbuf
[nread
] = '\0';
2706 p
= strchr (p
, '(');
2709 q
= strrchr (p
+ 1, ')');
2719 /* Command name is encoded in locale-coding-system; decode it. */
2720 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2721 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2722 Vlocale_coding_system
, 0);
2723 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2727 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2729 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2730 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2731 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2732 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2733 &u_time
, &s_time
, &cutime
, &cstime
,
2734 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2739 state_str
[1] = '\0';
2740 tem
= build_string (state_str
);
2741 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2743 /* Stops GCC whining about limited range of data type. */
2748 thcount_eint
= thcount
;
2749 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2750 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2751 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2752 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2753 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2754 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2755 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2756 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2757 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2758 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2759 if (clocks_per_sec
< 0)
2760 clocks_per_sec
= 100;
2761 attrs
= Fcons (Fcons (Qutime
,
2762 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2764 attrs
= Fcons (Fcons (Qstime
,
2765 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2767 attrs
= Fcons (Fcons (Qtime
,
2768 ltime_from_jiffies (s_time
+ u_time
,
2771 attrs
= Fcons (Fcons (Qcutime
,
2772 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2774 attrs
= Fcons (Fcons (Qcstime
,
2775 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2777 attrs
= Fcons (Fcons (Qctime
,
2778 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2780 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2781 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2782 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2783 tnow
= current_emacs_time ();
2784 telapsed
= get_up_time ();
2785 tboot
= sub_emacs_time (tnow
, telapsed
);
2786 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2787 tstart
= add_emacs_time (tboot
, tstart
);
2788 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2789 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2790 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2791 telapsed
= sub_emacs_time (tnow
, tstart
);
2792 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2793 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2794 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2795 / EMACS_TIME_TO_DOUBLE (telapsed
));
2798 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2799 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2802 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2809 strcpy (procfn_end
, "/cmdline");
2810 fd
= emacs_open (fn
, O_RDONLY
, 0);
2814 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2816 if (emacs_read (fd
, &ch
, 1) != 1)
2819 if (c_isspace (c
) || c
== '\\')
2820 cmdline_size
++; /* for later quoting, see below */
2824 cmdline
= xmalloc (cmdline_size
+ 1);
2825 lseek (fd
, 0L, SEEK_SET
);
2827 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2828 cmdline
[nread
++] = '\0';
2831 /* Assigning zero to `nread' makes us skip the following
2832 two loops, assign zero to cmdline_size, and enter the
2833 following `if' clause that handles unknown command
2837 /* We don't want trailing null characters. */
2838 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2840 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2842 /* Escape-quote whitespace and backslashes. */
2843 if (c_isspace (*p
) || *p
== '\\')
2845 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2849 else if (*p
== '\0')
2852 cmdline_size
= nread
;
2856 cmdline_size
= cmdsize
+ 2;
2857 cmdline
= xmalloc (cmdline_size
+ 1);
2858 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2861 /* Command line is encoded in locale-coding-system; decode it. */
2862 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2863 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2864 Vlocale_coding_system
, 0);
2866 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2873 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2875 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2876 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2877 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2878 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2879 #undef _FILE_OFFSET_BITS
2881 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2886 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2887 #define _FILE_OFFSET_BITS 64
2888 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2890 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2893 system_process_attributes (Lisp_Object pid
)
2895 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2900 struct psinfo pinfo
;
2906 Lisp_Object attrs
= Qnil
;
2907 Lisp_Object decoded_cmd
, tem
;
2908 struct gcpro gcpro1
, gcpro2
;
2910 CHECK_NUMBER_OR_FLOAT (pid
);
2911 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2912 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2913 if (stat (procfn
, &st
) < 0)
2916 GCPRO2 (attrs
, decoded_cmd
);
2920 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2922 pw
= getpwuid (uid
);
2925 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2928 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2930 gr
= getgrgid (gid
);
2933 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2935 strcpy (fn
, procfn
);
2936 procfn_end
= fn
+ strlen (fn
);
2937 strcpy (procfn_end
, "/psinfo");
2938 fd
= emacs_open (fn
, O_RDONLY
, 0);
2940 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2942 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2943 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2944 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2948 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2949 state_str
[1] = '\0';
2950 tem
= build_string (state_str
);
2951 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2954 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2955 need to get a string from it. */
2957 /* FIXME: missing: Qtpgid */
2969 Are they available? */
2971 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2972 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2973 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2974 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2975 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2977 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2978 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2979 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2981 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2982 range 0 .. 2**15, representing 0.0 .. 1.0. */
2983 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2984 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2987 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2988 strlen (pinfo
.pr_fname
)),
2989 Vlocale_coding_system
, 0);
2990 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2992 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2993 strlen (pinfo
.pr_psargs
)),
2994 Vlocale_coding_system
, 0);
2995 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3005 #elif defined __FreeBSD__
3008 timeval_to_EMACS_TIME (struct timeval t
)
3010 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3014 make_lisp_timeval (struct timeval t
)
3016 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3020 system_process_attributes (Lisp_Object pid
)
3023 int pagesize
= getpagesize ();
3030 char args
[MAXPATHLEN
];
3033 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3034 struct kinfo_proc proc
;
3035 size_t proclen
= sizeof proc
;
3037 struct gcpro gcpro1
, gcpro2
;
3038 Lisp_Object attrs
= Qnil
;
3039 Lisp_Object decoded_comm
;
3041 CHECK_NUMBER_OR_FLOAT (pid
);
3042 CONS_TO_INTEGER (pid
, int, proc_id
);
3045 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3048 GCPRO2 (attrs
, decoded_comm
);
3050 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3053 pw
= getpwuid (proc
.ki_uid
);
3056 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3058 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3061 gr
= getgrgid (proc
.ki_svgid
);
3064 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3066 decoded_comm
= code_convert_string_norecord
3067 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3068 Vlocale_coding_system
, 0);
3070 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3072 char state
[2] = {'\0', '\0'};
3073 switch (proc
.ki_stat
)
3095 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3098 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3099 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3100 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3103 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3106 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3108 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3109 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3110 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3111 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3112 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3114 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3116 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3118 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3119 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3120 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3122 attrs
= Fcons (Fcons (Qcutime
,
3123 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3125 attrs
= Fcons (Fcons (Qcstime
,
3126 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3128 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3129 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3130 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3132 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3134 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3135 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3136 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3137 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3138 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3141 now
= current_emacs_time ();
3142 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3143 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3145 len
= sizeof fscale
;
3146 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3151 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3153 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3154 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3155 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3159 len
= sizeof npages
;
3160 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3162 double pmem
= (proc
.ki_flag
& P_INMEM
3163 ? 100.0 * proc
.ki_rssize
/ npages
3165 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3168 mib
[2] = KERN_PROC_ARGS
;
3170 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3173 for (i
= 0; i
< len
; i
++)
3175 if (! args
[i
] && i
< len
- 1)
3180 (code_convert_string_norecord
3181 (build_unibyte_string (args
),
3182 Vlocale_coding_system
, 0));
3184 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3191 /* The WINDOWSNT implementation is in w32.c.
3192 The MSDOS implementation is in dosfns.c. */
3193 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3196 system_process_attributes (Lisp_Object pid
)
3201 #endif /* !defined (WINDOWSNT) */