1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
29 #endif /* HAVE_PWD_H */
32 #endif /* HAVE_LIMITS_H */
38 #include "sysselect.h"
39 #include "blockinput.h"
43 #define write sys_write
48 #endif /* not WINDOWSNT */
50 #include <sys/types.h>
57 #define setpgrp setpgid
61 /* Get SI_SRPC_DOMAIN, if it is available. */
62 #ifdef HAVE_SYS_SYSTEMINFO_H
63 #include <sys/systeminfo.h>
66 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
70 #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 */
97 /* Include this last. If it is ncurses header file, it adds a lot of
98 defines that interfere with stuff in other headers. Someone responsible
99 for ncurses messed up bigtime. See bug#6812. */
105 /* In process.h which conflicts with the local copy. */
107 int _cdecl
_spawnlp (int, const char *, const char *, ...);
108 int _cdecl
_getpid (void);
109 extern char *getwd (char *);
112 #include "syssignal.h"
119 #ifndef HAVE_STRUCT_UTIMBUF
120 /* We want to use utime rather than utimes, but we couldn't find the
121 structure declaration. We'll use the traditional one. */
129 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
134 static const int baud_convert
[] =
136 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
137 1800, 2400, 4800, 9600, 19200, 38400
142 void croak (char *) NO_RETURN
;
144 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
146 SIGMASKTYPE sigprocmask_set
;
149 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
151 /* Return the current working directory. Returns NULL on errors.
152 Any other returned value must be freed with free. This is used
153 only when get_current_dir_name is not defined on the system. */
155 get_current_dir_name (void)
159 struct stat dotstat
, pwdstat
;
160 /* If PWD is accurate, use it instead of calling getwd. PWD is
161 sometimes a nicer name, and using it may avoid a fatal error if a
162 parent directory is searchable but not readable. */
163 if ((pwd
= getenv ("PWD")) != 0
164 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
165 && stat (pwd
, &pwdstat
) == 0
166 && stat (".", &dotstat
) == 0
167 && dotstat
.st_ino
== pwdstat
.st_ino
168 && dotstat
.st_dev
== pwdstat
.st_dev
170 && strlen (pwd
) < MAXPATHLEN
174 buf
= (char *) malloc (strlen (pwd
) + 1);
182 size_t buf_size
= 1024;
183 buf
= (char *) malloc (buf_size
);
188 if (getcwd (buf
, buf_size
) == buf
)
192 int tmp_errno
= errno
;
198 buf
= (char *) realloc (buf
, buf_size
);
206 /* We need MAXPATHLEN here. */
207 buf
= (char *) malloc (MAXPATHLEN
+ 1);
210 if (getwd (buf
) == NULL
)
212 int tmp_errno
= errno
;
224 /* Discard pending input on all input descriptors. */
227 discard_tty_input (void)
230 struct emacs_tty buf
;
235 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
236 while (dos_keyread () != -1)
238 #else /* not MSDOS */
240 struct tty_display_info
*tty
;
241 for (tty
= tty_list
; tty
; tty
= tty
->next
)
243 if (tty
->input
) /* Is the device suspended? */
245 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
246 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
250 #endif /* not MSDOS */
251 #endif /* not WINDOWSNT */
257 /* Arrange for character C to be read as the next input from
259 XXX What if we have multiple ttys?
265 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
268 /* Should perhaps error if in batch mode */
270 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
271 #else /* no TIOCSTI */
272 error ("Cannot stuff terminal input characters in this version of Unix");
273 #endif /* no TIOCSTI */
279 init_baud_rate (int fd
)
287 #else /* not DOS_NT */
292 emacs_ospeed
= cfgetospeed (&sg
);
293 #endif /* not DOS_NT */
296 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
297 ? baud_convert
[emacs_ospeed
] : 9600);
305 set_exclusive_use (int fd
)
308 ioctl (fd
, FIOCLEX
, 0);
310 /* Ok to do nothing if this feature does not exist */
314 int wait_debugging
; /* Set nonzero to make following function work under dbx
315 (at least for bsd). */
318 wait_for_termination_signal (void)
322 /* Wait for subprocess with process id `pid' to terminate and
323 make sure it will get eliminated (not remain forever as a zombie) */
326 wait_for_termination (int pid
)
330 #if defined (BSD_SYSTEM) || defined (HPUX)
331 /* Note that kill returns -1 even if the process is just a zombie now.
332 But inevitably a SIGCHLD interrupt should be generated
333 and child_sig will do wait3 and make the process go away. */
334 /* There is some indication that there is a bug involved with
335 termination of subprocesses, perhaps involving a kernel bug too,
336 but no idea what it is. Just as a hunch we signal SIGCHLD to see
337 if that causes the problem to go away or get worse. */
338 sigsetmask (sigmask (SIGCHLD
));
339 if (0 > kill (pid
, 0))
341 sigsetmask (SIGEMPTYMASK
);
342 kill (getpid (), SIGCHLD
);
348 sigpause (SIGEMPTYMASK
);
349 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
353 #else /* not WINDOWSNT */
354 sigblock (sigmask (SIGCHLD
));
356 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
358 sigunblock (sigmask (SIGCHLD
));
362 sigsuspend (&empty_mask
);
363 #endif /* not WINDOWSNT */
364 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
369 * flush any pending output
370 * (may flush input as well; it does not matter the way we use it)
374 flush_pending_output (int channel
)
377 /* If we try this, we get hit with SIGTTIN, because
378 the child's tty belongs to the child's pgrp. */
381 ioctl (channel
, TCFLSH
, 1);
385 /* 3rd arg should be ignored
386 but some 4.2 kernels actually want the address of an int
387 and nonzero means something different. */
388 ioctl (channel
, TIOCFLUSH
, &zero
);
394 /* Set up the terminal at the other end of a pseudo-terminal that
395 we will be controlling an inferior through.
396 It should not echo or do line-editing, since that is done
397 in Emacs. No padding needed for insertion into an Emacs buffer. */
400 child_setup_tty (int out
)
405 EMACS_GET_TTY (out
, &s
);
406 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
407 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
409 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
410 Some versions of GNU Hurd do not have FFDLY? */
412 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
413 /* No output delays */
415 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
416 /* No output delays */
419 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
420 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
422 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
425 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
428 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
430 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
431 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
432 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
433 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
436 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
439 #ifdef SIGNALS_VIA_CHARACTERS
440 /* the QUIT and INTR character are used in process_send_signal
441 so set them here to something useful. */
442 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
443 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
444 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
445 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
446 #endif /* not SIGNALS_VIA_CHARACTERS */
449 /* Also, PTY overloads NUL and BREAK.
450 don't ignore break, but don't signal either, so it looks like NUL. */
451 s
.main
.c_iflag
&= ~IGNBRK
;
452 s
.main
.c_iflag
&= ~BRKINT
;
453 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
454 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
455 would force it to 0377. That looks like duplicated code. */
456 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
459 /* We originally enabled ICANON (and set VEOF to 04), and then had
460 proces.c send additional EOF chars to flush the output when faced
461 with long lines, but this leads to weird effects when the
462 subprocess has disabled ICANON and ends up seeing those spurious
463 extra EOFs. So we don't send EOFs any more in
464 process.c:send_process. First we tried to disable ICANON by
465 default, so if a subsprocess sets up ICANON, it's his problem (or
466 the Elisp package that talks to it) to deal with lines that are
467 too long. But this disables some features, such as the ability
468 to send EOF signals. So we re-enabled ICANON but there is no
469 more "send eof to flush" going on (which is wrong and unportable
470 in itself). The correct way to handle too much output is to
471 buffer what could not be written and then write it again when
472 select returns ok for writing. This has it own set of
473 problems. Write is now asynchronous, is that a problem? How much
474 do we buffer, and what do we do when that limit is reached? */
476 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
477 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
478 #if 0 /* These settings only apply to non-ICANON mode. */
479 s
.main
.c_cc
[VMIN
] = 1;
480 s
.main
.c_cc
[VTIME
] = 0;
483 EMACS_SET_TTY (out
, &s
, 0);
484 #endif /* not WINDOWSNT */
489 /* Record a signal code and the handler for it. */
493 SIGTYPE (*handler
) (int);
496 static void save_signal_handlers (struct save_signal
*);
497 static void restore_signal_handlers (struct save_signal
*);
499 /* Suspend the Emacs process; give terminal to its superior. */
504 #if defined (SIGTSTP) && !defined (MSDOS)
507 int pgrp
= EMACS_GETPGRP (0);
508 EMACS_KILLPG (pgrp
, SIGTSTP
);
511 #else /* No SIGTSTP */
512 /* On a system where suspending is not implemented,
513 instead fork a subshell and let it talk directly to the terminal
517 #endif /* no SIGTSTP */
520 /* Fork a subshell. */
525 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
527 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
530 struct save_signal saved_handlers
[5];
532 unsigned char *str
= 0;
535 saved_handlers
[0].code
= SIGINT
;
536 saved_handlers
[1].code
= SIGQUIT
;
537 saved_handlers
[2].code
= SIGTERM
;
539 saved_handlers
[3].code
= SIGIO
;
540 saved_handlers
[4].code
= 0;
542 saved_handlers
[3].code
= 0;
545 /* Mentioning current_buffer->buffer would mean including buffer.h,
546 which somehow wedges the hp compiler. So instead... */
548 dir
= intern ("default-directory");
549 if (NILP (Fboundp (dir
)))
551 dir
= Fsymbol_value (dir
);
555 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
556 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
558 memcpy (str
, SDATA (dir
), len
);
559 if (str
[len
- 1] != '/') str
[len
++] = '/';
565 save_signal_handlers (saved_handlers
);
566 synch_process_alive
= 1;
570 error ("Can't spawn subshell");
577 #ifdef DOS_NT /* MW, Aug 1993 */
580 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
583 sh
= (char *) egetenv ("SHELL");
587 /* Use our buffer's default directory for the subshell. */
589 chdir ((char *) str
);
591 close_process_descs (); /* Close Emacs's pipes/ptys */
593 #ifdef SET_EMACS_PRIORITY
595 extern EMACS_INT emacs_priority
;
597 if (emacs_priority
< 0)
598 nice (-emacs_priority
);
602 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
604 char *epwd
= getenv ("PWD");
605 char old_pwd
[MAXPATHLEN
+1+4];
607 /* If PWD is set, pass it with corrected value. */
610 strcpy (old_pwd
, epwd
);
611 if (str
[len
- 1] == '/')
613 setenv ("PWD", str
, 1);
618 putenv (old_pwd
); /* restore previous value */
620 #else /* not MSDOS */
622 /* Waits for process completion */
623 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
626 write (1, "Can't execute subshell", 22);
627 #else /* not WINDOWSNT */
628 execlp (sh
, sh
, (char *) 0);
629 write (1, "Can't execute subshell", 22);
631 #endif /* not WINDOWSNT */
632 #endif /* not MSDOS */
635 /* Do this now if we did not do it before. */
637 save_signal_handlers (saved_handlers
);
638 synch_process_alive
= 1;
642 wait_for_termination (pid
);
644 restore_signal_handlers (saved_handlers
);
645 synch_process_alive
= 0;
649 save_signal_handlers (struct save_signal
*saved_handlers
)
651 while (saved_handlers
->code
)
653 saved_handlers
->handler
654 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
660 restore_signal_handlers (struct save_signal
*saved_handlers
)
662 while (saved_handlers
->code
)
664 signal (saved_handlers
->code
, saved_handlers
->handler
);
670 /* If SIGIO is broken, don't do anything. */
687 unrequest_sigio (void)
694 int old_fcntl_flags
[MAXDESC
];
700 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
701 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
703 interrupts_deferred
= 0;
710 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
714 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
715 /* XXX Uhm, FASYNC is not used anymore here. */
716 /* XXX Yeah, but you need it for SIGIO, don't you? */
725 sigunblock (sigmask (SIGWINCH
));
727 sigunblock (sigmask (SIGIO
));
729 interrupts_deferred
= 0;
733 unrequest_sigio (void)
738 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
744 sigblock (sigmask (SIGWINCH
));
746 sigblock (sigmask (SIGIO
));
747 interrupts_deferred
= 1;
750 #else /* no FASYNC */
756 if (noninteractive
|| read_socket_hook
)
759 croak ("request_sigio");
763 unrequest_sigio (void)
765 if (noninteractive
|| read_socket_hook
)
768 croak ("unrequest_sigio");
777 /* Getting and setting emacs_tty structures. */
779 /* Set *TC to the parameters associated with the terminal FD.
780 Return zero if all's well, or -1 if we ran into an error we
781 couldn't deal with. */
783 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
785 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
787 /* We have those nifty POSIX tcmumbleattr functions. */
788 memset (&settings
->main
, 0, sizeof (settings
->main
));
789 if (tcgetattr (fd
, &settings
->main
) < 0)
793 /* We have survived the tempest. */
798 /* Set the parameters of the tty on FD according to the contents of
799 *SETTINGS. If FLUSHP is non-zero, we discard input.
800 Return 0 if all went well, and -1 if anything failed. */
803 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
805 /* Set the primary parameters - baud rate, character size, etcetera. */
808 /* We have those nifty POSIX tcmumbleattr functions.
809 William J. Smith <wjs@wiis.wang.com> writes:
810 "POSIX 1003.1 defines tcsetattr to return success if it was
811 able to perform any of the requested actions, even if some
812 of the requested actions could not be performed.
813 We must read settings back to ensure tty setup properly.
814 AIX requires this to keep tty from hanging occasionally." */
815 /* This make sure that we don't loop indefinitely in here. */
816 for (i
= 0 ; i
< 10 ; i
++)
817 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
828 memset (&new, 0, sizeof (new));
829 /* Get the current settings, and see if they're what we asked for. */
830 tcgetattr (fd
, &new);
831 /* We cannot use memcmp on the whole structure here because under
832 * aix386 the termios structure has some reserved field that may
835 if ( new.c_iflag
== settings
->main
.c_iflag
836 && new.c_oflag
== settings
->main
.c_oflag
837 && new.c_cflag
== settings
->main
.c_cflag
838 && new.c_lflag
== settings
->main
.c_lflag
839 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
846 /* We have survived the tempest. */
853 int old_fcntl_owner
[MAXDESC
];
854 #endif /* F_SETOWN */
856 /* This may also be defined in stdio,
857 but if so, this does no harm,
858 and using the same name avoids wasting the other one's space. */
861 unsigned char _sobuf
[BUFSIZ
+8];
866 /* Initialize the terminal mode on all tty devices that are currently
870 init_all_sys_modes (void)
872 struct tty_display_info
*tty
;
873 for (tty
= tty_list
; tty
; tty
= tty
->next
)
874 init_sys_modes (tty
);
877 /* Initialize the terminal mode on the given tty device. */
880 init_sys_modes (struct tty_display_info
*tty_out
)
882 struct emacs_tty tty
;
884 Vtty_erase_char
= Qnil
;
889 if (!tty_out
->output
)
890 return; /* The tty is suspended. */
892 if (! tty_out
->old_tty
)
893 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
895 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
897 tty
= *tty_out
->old_tty
;
899 #if !defined (DOS_NT)
900 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
902 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
903 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
904 #ifdef INLCR /* I'm just being cautious,
905 since I can't check how widespread INLCR is--rms. */
906 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
909 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
911 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
912 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
914 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
916 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
917 if (tty_out
->flow_control
)
919 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
921 tty
.main
.c_iflag
&= ~IXANY
;
925 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
926 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
928 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
930 if (tty_out
->meta_key
)
932 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
933 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
936 if (tty_out
->input
== stdin
)
938 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
939 /* Set up C-g for both SIGQUIT and SIGINT.
940 We don't know which we will get, but we handle both alike
941 so which one it really gives us does not matter. */
942 tty
.main
.c_cc
[VQUIT
] = quit_char
;
946 /* We normally don't get interrupt or quit signals from tty
947 devices other than our controlling terminal; therefore,
948 we must handle C-g as normal input. Unfortunately, this
949 means that the interrupt and quit feature must be
950 disabled on secondary ttys, or we would not even see the
953 Note that even though emacsclient could have special code
954 to pass SIGINT to Emacs, we should _not_ enable
955 interrupt/quit keys for emacsclient frames. This means
956 that we can't break out of loops in C code from a
957 secondary tty frame, but we can always decide what
958 display the C-g came from, which is more important from a
959 usability point of view. (Consider the case when two
960 people work together using the same Emacs instance.) */
961 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
962 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
964 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
965 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
967 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
972 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
975 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
977 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
978 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
981 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
984 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
985 #endif /* VREPRINT */
987 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
990 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
991 #endif /* VDISCARD */
993 if (tty_out
->flow_control
)
996 tty
.main
.c_cc
[VSTART
] = '\021';
999 tty
.main
.c_cc
[VSTOP
] = '\023';
1005 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1008 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1013 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1014 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1015 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1016 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1017 if (tty_out
->flow_control
)
1020 tty
.main
.c_cc
[VSTART
] = '\021';
1023 tty
.main
.c_cc
[VSTOP
] = '\023';
1026 /* Also, PTY overloads NUL and BREAK.
1027 don't ignore break, but don't signal either, so it looks like NUL.
1028 This really serves a purpose only if running in an XTERM window
1029 or via TELNET or the like, but does no harm elsewhere. */
1030 tty
.main
.c_iflag
&= ~IGNBRK
;
1031 tty
.main
.c_iflag
&= ~BRKINT
;
1033 #endif /* not DOS_NT */
1035 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1036 if (!tty_out
->term_initted
)
1037 internal_terminal_init ();
1038 dos_ttraw (tty_out
);
1041 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1043 /* This code added to insure that, if flow-control is not to be used,
1044 we have an unlocked terminal at the start. */
1047 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1050 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1053 #if !defined (DOS_NT)
1055 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1060 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1061 if (interrupt_input
)
1063 old_fcntl_owner
[fileno (tty_out
->input
)] =
1064 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1065 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1066 init_sigio (fileno (tty_out
->input
));
1068 if (gpm_tty
== tty_out
)
1070 /* Arrange for mouse events to give us SIGIO signals. */
1071 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1072 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1073 init_sigio (gpm_fd
);
1075 #endif /* HAVE_GPM */
1077 #endif /* F_GETOWN */
1078 #endif /* F_SETFL */
1081 /* This symbol is defined on recent USG systems.
1082 Someone says without this call USG won't really buffer the file
1083 even with a call to setbuf. */
1084 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1086 setbuf (tty_out
->output
, (char *) _sobuf
);
1089 if (tty_out
->terminal
->set_terminal_modes_hook
)
1090 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1092 if (!tty_out
->term_initted
)
1094 Lisp_Object tail
, frame
;
1095 FOR_EACH_FRAME (tail
, frame
)
1097 /* XXX This needs to be revised. */
1098 if (FRAME_TERMCAP_P (XFRAME (frame
))
1099 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1100 init_frame_faces (XFRAME (frame
));
1104 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1106 /* We used to call "direct_output_forward_char(0)" here,
1107 but it's not clear why, since it may not do anything anyway. */
1111 Lisp_Object tail
, frame
;
1113 FOR_EACH_FRAME (tail
, frame
)
1115 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1116 || FRAME_MSDOS_P (XFRAME (frame
)))
1117 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1118 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1122 tty_out
->term_initted
= 1;
1125 /* Return nonzero if safe to use tabs in output.
1126 At the time this is called, init_sys_modes has not been done yet. */
1129 tabs_safe_p (int fd
)
1131 struct emacs_tty etty
;
1133 EMACS_GET_TTY (fd
, &etty
);
1134 return EMACS_TTY_TABS_OK (&etty
);
1137 /* Get terminal size from system.
1138 Store number of lines into *HEIGHTP and width into *WIDTHP.
1139 We store 0 if there's no valid information. */
1142 get_tty_size (int fd
, int *widthp
, int *heightp
)
1148 struct winsize size
;
1150 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1151 *widthp
= *heightp
= 0;
1154 *widthp
= size
.ws_col
;
1155 *heightp
= size
.ws_row
;
1161 /* SunOS - style. */
1162 struct ttysize size
;
1164 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1165 *widthp
= *heightp
= 0;
1168 *widthp
= size
.ts_cols
;
1169 *heightp
= size
.ts_lines
;
1174 *widthp
= ScreenCols ();
1175 *heightp
= ScreenRows ();
1176 #else /* system doesn't know size */
1180 #endif /* not SunOS-style */
1181 #endif /* not BSD-style */
1184 /* Set the logical window size associated with descriptor FD
1185 to HEIGHT and WIDTH. This is used mainly with ptys. */
1188 set_window_size (int fd
, int height
, int width
)
1193 struct winsize size
;
1194 size
.ws_row
= height
;
1195 size
.ws_col
= width
;
1197 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1198 return 0; /* error */
1205 /* SunOS - style. */
1206 struct ttysize size
;
1207 size
.ts_lines
= height
;
1208 size
.ts_cols
= width
;
1210 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1216 #endif /* not SunOS-style */
1217 #endif /* not BSD-style */
1222 /* Prepare all terminal devices for exiting Emacs. */
1225 reset_all_sys_modes (void)
1227 struct tty_display_info
*tty
;
1228 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1229 reset_sys_modes (tty
);
1232 /* Prepare the terminal for closing it; move the cursor to the
1233 bottom of the frame, turn off interrupt-driven I/O, etc. */
1236 reset_sys_modes (struct tty_display_info
*tty_out
)
1243 if (!tty_out
->term_initted
)
1246 if (!tty_out
->output
)
1247 return; /* The tty is suspended. */
1249 /* Go to and clear the last line of the terminal. */
1251 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1253 /* Code adapted from tty_clear_end_of_line. */
1254 if (tty_out
->TS_clr_line
)
1256 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1259 { /* have to do it the hard way */
1261 tty_turn_off_insert (tty_out
);
1263 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1265 fputc (' ', tty_out
->output
);
1269 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1270 fflush (tty_out
->output
);
1272 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1273 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1276 /* Avoid possible loss of output when changing terminal modes. */
1277 fsync (fileno (tty_out
->output
));
1281 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1282 if (interrupt_input
)
1284 reset_sigio (fileno (tty_out
->input
));
1285 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1286 old_fcntl_owner
[fileno (tty_out
->input
)]);
1288 #endif /* F_SETOWN */
1290 fcntl (fileno (tty_out
->input
), F_SETFL
,
1291 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1293 #endif /* F_SETFL */
1295 if (tty_out
->old_tty
)
1296 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1297 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1300 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1308 /* Set up the proper status flags for use of a pty. */
1313 /* I'm told that TOICREMOTE does not mean control chars
1314 "can't be sent" but rather that they don't have
1315 input-editing or signaling effects.
1316 That should be good, because we have other ways
1317 to do those things in Emacs.
1318 However, telnet mode seems not to work on 4.2.
1319 So TIOCREMOTE is turned off now. */
1321 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1322 will hang. In particular, the "timeout" feature (which
1323 causes a read to return if there is no data available)
1324 does this. Also it is known that telnet mode will hang
1325 in such a way that Emacs must be stopped (perhaps this
1326 is the same problem).
1328 If TIOCREMOTE is turned off, then there is a bug in
1329 hp-ux which sometimes loses data. Apparently the
1330 code which blocks the master process when the internal
1331 buffer fills up does not work. Other than this,
1332 though, everything else seems to work fine.
1334 Since the latter lossage is more benign, we may as well
1335 lose that way. -- cph */
1337 #if defined(UNIX98_PTYS)
1340 ioctl (fd
, FIONBIO
, &on
);
1345 #endif /* HAVE_PTYS */
1347 /* init_system_name sets up the string for the Lisp function
1348 system-name to return. */
1350 extern Lisp_Object Vsystem_name
;
1353 #include <sys/socket.h>
1355 #endif /* HAVE_SOCKETS */
1358 #ifndef HAVE_H_ERRNO
1361 #endif /* TRY_AGAIN */
1364 init_system_name (void)
1366 #ifndef HAVE_GETHOSTNAME
1369 Vsystem_name
= build_string (uts
.nodename
);
1370 #else /* HAVE_GETHOSTNAME */
1371 unsigned int hostname_size
= 256;
1372 char *hostname
= (char *) alloca (hostname_size
);
1374 /* Try to get the host name; if the buffer is too short, try
1375 again. Apparently, the only indication gethostname gives of
1376 whether the buffer was large enough is the presence or absence
1377 of a '\0' in the string. Eech. */
1380 gethostname (hostname
, hostname_size
- 1);
1381 hostname
[hostname_size
- 1] = '\0';
1383 /* Was the buffer large enough for the '\0'? */
1384 if (strlen (hostname
) < hostname_size
- 1)
1387 hostname_size
<<= 1;
1388 hostname
= (char *) alloca (hostname_size
);
1391 /* Turn the hostname into the official, fully-qualified hostname.
1392 Don't do this if we're going to dump; this can confuse system
1393 libraries on some machines and make the dumped emacs core dump. */
1396 #endif /* not CANNOT_DUMP */
1397 if (! strchr (hostname
, '.'))
1400 #ifdef HAVE_GETADDRINFO
1401 struct addrinfo
*res
;
1402 struct addrinfo hints
;
1405 memset (&hints
, 0, sizeof (hints
));
1406 hints
.ai_socktype
= SOCK_STREAM
;
1407 hints
.ai_flags
= AI_CANONNAME
;
1409 for (count
= 0;; count
++)
1411 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1412 || ret
!= EAI_AGAIN
)
1417 Fsleep_for (make_number (1), Qnil
);
1422 struct addrinfo
*it
= res
;
1425 char *fqdn
= it
->ai_canonname
;
1426 if (fqdn
&& strchr (fqdn
, '.')
1427 && strcmp (fqdn
, "localhost.localdomain") != 0)
1433 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1434 strcpy (hostname
, it
->ai_canonname
);
1438 #else /* !HAVE_GETADDRINFO */
1440 for (count
= 0;; count
++)
1446 hp
= gethostbyname (hostname
);
1448 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1455 Fsleep_for (make_number (1), Qnil
);
1460 char *fqdn
= (char *) hp
->h_name
;
1462 if (!strchr (fqdn
, '.'))
1464 /* We still don't have a fully qualified domain name.
1465 Try to find one in the list of alternate names */
1466 char **alias
= hp
->h_aliases
;
1468 && (!strchr (*alias
, '.')
1469 || !strcmp (*alias
, "localhost.localdomain")))
1476 #endif /* !HAVE_GETADDRINFO */
1478 #endif /* HAVE_SOCKETS */
1479 Vsystem_name
= build_string (hostname
);
1480 #endif /* HAVE_GETHOSTNAME */
1483 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1484 if (*p
== ' ' || *p
== '\t')
1490 #if !defined (HAVE_SELECT)
1492 #include "sysselect.h"
1495 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
1496 /* Cause explanatory error message at compile time,
1497 since the select emulation is not good enough for X. */
1498 int *x
= &x_windows_lose_if_no_select_system_call
;
1501 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
1502 * Only checks read descriptors.
1504 /* How long to wait between checking fds in select */
1505 #define SELECT_PAUSE 1
1508 /* For longjmp'ing back to read_input_waiting. */
1510 jmp_buf read_alarm_throw
;
1512 /* Nonzero if the alarm signal should throw back to read_input_waiting.
1513 The read_socket_hook function sets this to 1 while it is waiting. */
1515 int read_alarm_should_throw
;
1518 select_alarm (int ignore
)
1521 signal (SIGALRM
, SIG_IGN
);
1522 SIGNAL_THREAD_CHECK (SIGALRM
);
1523 if (read_alarm_should_throw
)
1524 longjmp (read_alarm_throw
, 1);
1528 /* Only rfds are checked. */
1530 sys_select (int nfds
,
1531 SELECT_TYPE
*rfds
, SELECT_TYPE
*wfds
, SELECT_TYPE
*efds
,
1532 EMACS_TIME
*timeout
)
1534 /* XXX This needs to be updated for multi-tty support. Is there
1535 anybody who needs to emulate select these days? */
1540 extern int proc_buffered_char
[];
1541 extern int process_tick
, update_tick
;
1544 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
1545 /* If we're using X, then the native select will work; we only need the
1546 emulation for non-X usage. */
1547 if (!NILP (Vinitial_window_system
))
1548 return select (nfds
, rfds
, wfds
, efds
, timeout
);
1550 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
1551 local_timeout
= &timeoutval
;
1563 /* If we are looking only for the terminal, with no timeout,
1564 just read it and wait -- that's more efficient. */
1565 if (*local_timeout
== 100000 && process_tick
== update_tick
1566 && FD_ISSET (0, &orfds
))
1569 for (fd
= 1; fd
< nfds
; ++fd
)
1570 if (FD_ISSET (fd
, &orfds
))
1572 if (! detect_input_pending ())
1573 read_input_waiting ();
1579 /* Once a second, till the timer expires, check all the flagged read
1580 * descriptors to see if any input is available. If there is some then
1581 * set the corresponding bit in the return copy of rfds.
1585 register int to_check
, fd
;
1589 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
1591 if (FD_ISSET (fd
, &orfds
))
1593 int avail
= 0, status
= 0;
1596 avail
= detect_input_pending (); /* Special keyboard handler */
1600 status
= ioctl (fd
, FIONREAD
, &avail
);
1601 #else /* no FIONREAD */
1602 /* Hoping it will return -1 if nothing available
1603 or 0 if all 0 chars requested are read. */
1604 if (proc_buffered_char
[fd
] >= 0)
1608 avail
= read (fd
, &buf
, 1);
1610 proc_buffered_char
[fd
] = buf
;
1612 #endif /* no FIONREAD */
1614 if (status
>= 0 && avail
> 0)
1622 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
1625 turn_on_atimers (0);
1626 signal (SIGALRM
, select_alarm
);
1628 alarm (SELECT_PAUSE
);
1630 /* Wait for a SIGALRM (or maybe a SIGTINT) */
1631 while (select_alarmed
== 0 && *local_timeout
!= 0
1632 && process_tick
== update_tick
)
1634 /* If we are interested in terminal input,
1635 wait by reading the terminal.
1636 That makes instant wakeup for terminal input at least. */
1637 if (FD_ISSET (0, &orfds
))
1639 read_input_waiting ();
1640 if (detect_input_pending ())
1646 (*local_timeout
) -= SELECT_PAUSE
;
1648 /* Reset the old alarm if there was one. */
1649 turn_on_atimers (1);
1651 if (*local_timeout
== 0) /* Stop on timer being cleared */
1656 #endif /* not WINDOWSNT */
1658 /* Read keyboard input into the standard buffer,
1659 waiting for at least one character. */
1662 read_input_waiting (void)
1664 /* XXX This needs to be updated for multi-tty support. Is there
1665 anybody who needs to emulate select these days? */
1668 if (read_socket_hook
)
1670 struct input_event hold_quit
;
1672 EVENT_INIT (hold_quit
);
1673 hold_quit
.kind
= NO_EVENT
;
1675 read_alarm_should_throw
= 0;
1676 if (! setjmp (read_alarm_throw
))
1677 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
1681 if (hold_quit
.kind
!= NO_EVENT
)
1682 kbd_buffer_store_event (&hold_quit
);
1686 struct input_event e
;
1688 nread
= read (fileno (stdin
), buf
, 1);
1691 /* Scan the chars for C-g and store them in kbd_buffer. */
1692 e
.kind
= ASCII_KEYSTROKE_EVENT
;
1693 e
.frame_or_window
= selected_frame
;
1695 for (i
= 0; i
< nread
; i
++)
1697 /* Convert chars > 0177 to meta events if desired.
1698 We do this under the same conditions that read_avail_input does. */
1699 if (read_socket_hook
== 0)
1701 /* If the user says she has a meta key, then believe her. */
1702 if (meta_key
== 1 && (buf
[i
] & 0x80))
1703 e
.modifiers
= meta_modifier
;
1708 XSETINT (e
.code
, buf
[i
]);
1709 kbd_buffer_store_event (&e
);
1710 /* Don't look at input that follows a C-g too closely.
1711 This reduces lossage due to autorepeat on C-g. */
1712 if (buf
[i
] == quit_char
)
1718 #if !defined (HAVE_SELECT)
1719 #define select sys_select
1722 #endif /* not HAVE_SELECT */
1723 #endif /* not MSDOS */
1725 /* POSIX signals support - DJB */
1726 /* Anyone with POSIX signals should have ANSI C declarations */
1728 sigset_t empty_mask
, full_mask
;
1733 sys_signal (int signal_number
, signal_handler_t action
)
1735 struct sigaction new_action
, old_action
;
1736 sigemptyset (&new_action
.sa_mask
);
1737 new_action
.sa_handler
= action
;
1738 new_action
.sa_flags
= 0;
1739 #if defined (SA_RESTART)
1740 /* Emacs mostly works better with restartable system services. If this
1741 flag exists, we probably want to turn it on here.
1742 However, on some systems this resets the timeout of `select'
1743 which means that `select' never finishes if it keeps getting signals.
1744 BROKEN_SA_RESTART is defined on those systems. */
1745 /* It's not clear why the comment above says "mostly works better". --Stef
1746 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1747 for pending input so we need long-running syscalls to be interrupted
1748 after a signal that sets the interrupt_input_pending flag. */
1749 /* Non-interactive keyboard input goes through stdio, where we always
1750 want restartable system calls. */
1751 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1754 new_action
.sa_flags
= SA_RESTART
;
1756 sigaction (signal_number
, &new_action
, &old_action
);
1757 return (old_action
.sa_handler
);
1760 #endif /* WINDOWSNT */
1763 /* If we're compiling with GCC, we don't need this function, since it
1764 can be written as a macro. */
1766 sys_sigmask (int sig
)
1769 sigemptyset (&mask
);
1770 sigaddset (&mask
, sig
);
1775 /* I'd like to have these guys return pointers to the mask storage in here,
1776 but there'd be trouble if the code was saving multiple masks. I'll be
1777 safe and pass the structure. It normally won't be more than 2 bytes
1781 sys_sigblock (sigset_t new_mask
)
1784 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1789 sys_sigunblock (sigset_t new_mask
)
1792 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1797 sys_sigsetmask (sigset_t new_mask
)
1800 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1805 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1806 static char *my_sys_siglist
[NSIG
];
1810 # define sys_siglist my_sys_siglist
1816 sigemptyset (&empty_mask
);
1817 sigfillset (&full_mask
);
1819 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1823 sys_siglist
[SIGABRT
] = "Aborted";
1826 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1829 sys_siglist
[SIGALRM
] = "Alarm clock";
1832 sys_siglist
[SIGBUS
] = "Bus error";
1835 sys_siglist
[SIGCLD
] = "Child status changed";
1838 sys_siglist
[SIGCHLD
] = "Child status changed";
1841 sys_siglist
[SIGCONT
] = "Continued";
1844 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1847 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1850 sys_siglist
[SIGEMT
] = "Emulation trap";
1853 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1856 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1859 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1862 sys_siglist
[SIGHUP
] = "Hangup";
1865 sys_siglist
[SIGILL
] = "Illegal instruction";
1868 sys_siglist
[SIGINT
] = "Interrupt";
1871 sys_siglist
[SIGIO
] = "I/O possible";
1874 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1877 sys_siglist
[SIGIOT
] = "IOT trap";
1880 sys_siglist
[SIGKILL
] = "Killed";
1883 sys_siglist
[SIGLOST
] = "Resource lost";
1886 sys_siglist
[SIGLWP
] = "SIGLWP";
1889 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1892 sys_siglist
[SIGWIND
] = "SIGPHONE";
1895 sys_siglist
[SIGPIPE
] = "Broken pipe";
1898 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1901 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1904 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1907 sys_siglist
[SIGPWR
] = "Power-fail restart";
1910 sys_siglist
[SIGQUIT
] = "Quit";
1913 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1916 sys_siglist
[SIGSAK
] = "Secure attention";
1919 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1922 sys_siglist
[SIGSOUND
] = "Sound completed";
1925 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1928 sys_siglist
[SIGSTP
] = "Stopped (user)";
1931 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1934 sys_siglist
[SIGTERM
] = "Terminated";
1937 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1940 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1943 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1946 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1949 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1952 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1955 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1958 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1961 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1964 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1967 sys_siglist
[SIGWINCH
] = "Window size changed";
1970 sys_siglist
[SIGWIND
] = "SIGWIND";
1973 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1976 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1979 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1988 /* Figure out how many bits the system's random number generator uses.
1989 `random' and `lrand48' are assumed to return 31 usable bits.
1990 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1991 so we'll shift it and treat it like the 15-bit USG `rand'. */
1995 # define RAND_BITS 31
1996 # else /* !HAVE_RANDOM */
1997 # ifdef HAVE_LRAND48
1998 # define RAND_BITS 31
1999 # define random lrand48
2000 # else /* !HAVE_LRAND48 */
2001 # define RAND_BITS 15
2002 # if RAND_MAX == 32767
2003 # define random rand
2004 # else /* RAND_MAX != 32767 */
2005 # if RAND_MAX == 2147483647
2006 # define random() (rand () >> 16)
2007 # else /* RAND_MAX != 2147483647 */
2009 # define random rand
2011 # define random() (rand () >> 16)
2013 # endif /* RAND_MAX != 2147483647 */
2014 # endif /* RAND_MAX != 32767 */
2015 # endif /* !HAVE_LRAND48 */
2016 # endif /* !HAVE_RANDOM */
2017 #endif /* !RAND_BITS */
2020 seed_random (long int arg
)
2023 srandom ((unsigned int)arg
);
2025 # ifdef HAVE_LRAND48
2028 srand ((unsigned int)arg
);
2034 * Build a full Emacs-sized word out of whatever we've got.
2035 * This suffices even for a 64-bit architecture with a 15-bit rand.
2040 long val
= random ();
2041 #if VALBITS > RAND_BITS
2042 val
= (val
<< RAND_BITS
) ^ random ();
2043 #if VALBITS > 2*RAND_BITS
2044 val
= (val
<< RAND_BITS
) ^ random ();
2045 #if VALBITS > 3*RAND_BITS
2046 val
= (val
<< RAND_BITS
) ^ random ();
2047 #if VALBITS > 4*RAND_BITS
2048 val
= (val
<< RAND_BITS
) ^ random ();
2049 #endif /* need at least 5 */
2050 #endif /* need at least 4 */
2051 #endif /* need at least 3 */
2052 #endif /* need at least 2 */
2053 return val
& ((1L << VALBITS
) - 1);
2056 #ifndef HAVE_STRERROR
2062 extern char *sys_errlist
[];
2063 extern int sys_nerr
;
2065 if (errnum
>= 0 && errnum
< sys_nerr
)
2066 return sys_errlist
[errnum
];
2067 return (char *) "Unknown error";
2069 #endif /* not WINDOWSNT */
2070 #endif /* ! HAVE_STRERROR */
2073 emacs_open (const char *path
, int oflag
, int mode
)
2075 register int rtnval
;
2077 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2078 && (errno
== EINTR
))
2084 emacs_close (int fd
)
2087 register int rtnval
;
2089 while ((rtnval
= close (fd
)) == -1
2090 && (errno
== EINTR
))
2093 /* If close is interrupted SunOS 4.1 may or may not have closed the
2094 file descriptor. If it did the second close will fail with
2095 errno = EBADF. That means we have succeeded. */
2096 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2103 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
2105 register int rtnval
;
2107 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2108 && (errno
== EINTR
))
2114 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
2116 register int rtnval
, bytes_written
;
2122 rtnval
= write (fildes
, buf
, nbyte
);
2129 /* I originally used `QUIT' but that might causes files to
2130 be truncated if you hit C-g in the middle of it. --Stef */
2131 process_pending_signals ();
2136 return (bytes_written
? bytes_written
: -1);
2141 bytes_written
+= rtnval
;
2143 return (bytes_written
);
2148 * All of the following are for USG.
2150 * On USG systems the system calls are INTERRUPTIBLE by signals
2151 * that the user program has elected to catch. Thus the system call
2152 * must be retried in these cases. To handle this without massive
2153 * changes in the source code, we remap the standard system call names
2154 * to names for our own functions in sysdep.c that do the system call
2155 * with retries. Actually, for portability reasons, it is good
2156 * programming practice, as this example shows, to limit all actual
2157 * system calls to a single occurrence in the source. Sure, this
2158 * adds an extra level of function call overhead but it is almost
2159 * always negligible. Fred Fish, Unisoft Systems Inc.
2163 * Warning, this function may not duplicate 4.2 action properly
2164 * under error conditions.
2168 /* In 4.1, param.h fails to define this. */
2169 #define MAXPATHLEN 1024
2175 getwd (char *pathname
)
2177 char *npath
, *spath
;
2178 extern char *getcwd (char *, size_t);
2180 BLOCK_INPUT
; /* getcwd uses malloc */
2181 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2187 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2188 up to first slash. Should be harmless on other systems. */
2189 while (*npath
&& *npath
!= '/')
2191 strcpy (pathname
, npath
);
2192 free (spath
); /* getcwd uses malloc */
2197 #endif /* HAVE_GETWD */
2200 * Emulate rename using unlink/link. Note that this is
2201 * only partially correct. Also, doesn't enforce restriction
2202 * that files be of same type (regular->regular, dir->dir, etc).
2208 rename (const char *from
, const char *to
)
2210 if (access (from
, 0) == 0)
2213 if (link (from
, to
) == 0)
2214 if (unlink (from
) == 0)
2223 #if defined(HPUX) && !defined(HAVE_PERROR)
2225 /* HPUX curses library references perror, but as far as we know
2226 it won't be called. Anyway this definition will do for now. */
2232 #endif /* HPUX and not HAVE_PERROR */
2237 * Emulate BSD dup2. First close newd if it already exists.
2238 * Then, attempt to dup oldd. If not successful, call dup2 recursively
2239 * until we are, then close the unsuccessful ones.
2243 dup2 (int oldd
, int newd
)
2245 register int fd
, ret
;
2250 return fcntl (oldd
, F_DUPFD
, newd
);
2257 ret
= dup2 (old
,new);
2263 #endif /* not HAVE_DUP2 */
2266 * Gettimeofday. Simulate as much as possible. Only accurate
2267 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2268 * Only needed when subprocesses are defined.
2271 #ifndef HAVE_GETTIMEOFDAY
2276 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2278 extern long time (long);
2280 tp
->tv_sec
= time ((long *)0);
2283 tzp
->tz_minuteswest
= -1;
2288 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2291 * This function will go away as soon as all the stubs fixed. (fnf)
2295 croak (char *badfunc
)
2297 printf ("%s not yet implemented\r\n", badfunc
);
2298 reset_all_sys_modes ();
2304 /* Directory routines for systems that don't have them. */
2306 #ifdef HAVE_DIRENT_H
2310 #if !defined (HAVE_CLOSEDIR)
2313 closedir (DIR *dirp
/* stream from opendir */)
2317 rtnval
= emacs_close (dirp
->dd_fd
);
2318 xfree ((char *) dirp
);
2322 #endif /* not HAVE_CLOSEDIR */
2323 #endif /* HAVE_DIRENT_H */
2327 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2330 struct timeval tv
[2];
2333 return utimes (filename
, tv
);
2334 #else /* not HAVE_UTIMES */
2336 utb
.actime
= EMACS_SECS (atime
);
2337 utb
.modtime
= EMACS_SECS (mtime
);
2338 return utime (filename
, &utb
);
2339 #endif /* not HAVE_UTIMES */
2342 /* mkdir and rmdir functions, for systems which don't have them. */
2346 * Written by Robert Rother, Mariah Corporation, August 1985.
2348 * If you want it, it's yours. All I ask in return is that if you
2349 * figure out how to do this in a Bourne Shell script you send me
2351 * sdcsvax!rmr or rmr@uscd
2353 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2354 * subroutine. 11Mar86; hoptoad!gnu
2356 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2357 * subroutine didn't return EEXIST. It does now.
2364 mkdir (char *dpath
, int dmode
)
2366 int cpid
, status
, fd
;
2367 struct stat statbuf
;
2369 if (stat (dpath
, &statbuf
) == 0)
2371 errno
= EEXIST
; /* Stat worked, so it already exists */
2375 /* If stat fails for a reason other than non-existence, return error */
2376 if (errno
!= ENOENT
)
2379 synch_process_alive
= 1;
2380 switch (cpid
= fork ())
2383 case -1: /* Error in fork */
2384 return (-1); /* Errno is set already */
2386 case 0: /* Child process */
2388 * Cheap hack to set mode of new directory. Since this
2389 * child process is going away anyway, we zap its umask.
2390 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2391 * directory. Does anybody care?
2393 status
= umask (0); /* Get current umask */
2394 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2395 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2402 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2403 _exit (-1); /* Can't exec /bin/mkdir */
2405 default: /* Parent process */
2406 wait_for_termination (cpid
);
2409 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2410 || synch_process_termsig
!= 0)
2412 errno
= EIO
; /* We don't know why, but */
2413 return -1; /* /bin/mkdir failed */
2418 #endif /* not HAVE_MKDIR */
2424 int cpid
, status
, fd
;
2425 struct stat statbuf
;
2427 if (stat (dpath
, &statbuf
) != 0)
2429 /* Stat just set errno. We don't have to */
2433 synch_process_alive
= 1;
2434 switch (cpid
= fork ())
2437 case -1: /* Error in fork */
2438 return (-1); /* Errno is set already */
2440 case 0: /* Child process */
2441 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2448 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2449 _exit (-1); /* Can't exec /bin/rmdir */
2451 default: /* Parent process */
2452 wait_for_termination (cpid
);
2455 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2456 || synch_process_termsig
!= 0)
2458 errno
= EIO
; /* We don't know why, but */
2459 return -1; /* /bin/rmdir failed */
2464 #endif /* !HAVE_RMDIR */
2469 memset (void *b
, int n
, size_t length
)
2471 unsigned char *p
= b
;
2472 while (length
-- > 0)
2476 #endif /* !HAVE_MEMSET */
2480 memcpy (void *b1
, void *b2
, size_t length
)
2482 unsigned char *p1
= b1
, *p2
= b2
;
2483 while (length
-- > 0)
2487 #endif /* !HAVE_MEMCPY */
2489 #ifndef HAVE_MEMMOVE
2491 memmove (void *b1
, void *b2
, size_t length
)
2493 unsigned char *p1
= b1
, *p2
= b2
;
2494 if (p1
< p2
|| p1
>= p2
+ length
)
2495 while (length
-- > 0)
2501 while (length
-- > 0)
2506 #endif /* !HAVE_MEMCPY */
2510 memcmp (void *b1
, void *b2
, size_t length
)
2512 unsigned char *p1
= b1
, *p2
= b2
;
2513 while (length
-- > 0)
2515 return p1
[-1] < p2
[-1] ? -1 : 1;
2518 #endif /* !HAVE_MEMCMP */
2520 #ifndef HAVE_STRSIGNAL
2522 strsignal (int code
)
2526 if (0 <= code
&& code
< NSIG
)
2528 /* Cast to suppress warning if the table has const char *. */
2529 signame
= (char *) sys_siglist
[code
];
2534 #endif /* HAVE_STRSIGNAL */
2537 /* For make-serial-process */
2539 serial_open (char *port
)
2543 fd
= emacs_open ((char*) port
,
2556 error ("Could not open %s: %s",
2557 port
, emacs_strerror (errno
));
2560 ioctl (fd
, TIOCEXCL
, (char *) 0);
2566 #if !defined (HAVE_CFMAKERAW)
2567 /* Workaround for targets which are missing cfmakeraw. */
2568 /* Pasted from man page. */
2570 cfmakeraw (struct termios
*termios_p
)
2572 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2573 termios_p
->c_oflag
&= ~OPOST
;
2574 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2575 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2576 termios_p
->c_cflag
|= CS8
;
2578 #endif /* !defined (HAVE_CFMAKERAW */
2580 #if !defined (HAVE_CFSETSPEED)
2581 /* Workaround for targets which are missing cfsetspeed. */
2583 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2585 return (cfsetispeed (termios_p
, vitesse
)
2586 + cfsetospeed (termios_p
, vitesse
));
2590 /* For serial-process-configure */
2592 serial_configure (struct Lisp_Process
*p
,
2593 Lisp_Object contact
)
2595 Lisp_Object childp2
= Qnil
;
2596 Lisp_Object tem
= Qnil
;
2597 struct termios attr
;
2599 char summary
[4] = "???"; /* This usually becomes "8N1". */
2601 childp2
= Fcopy_sequence (p
->childp
);
2603 /* Read port attributes and prepare default configuration. */
2604 err
= tcgetattr (p
->outfd
, &attr
);
2606 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2608 #if defined (CLOCAL)
2609 attr
.c_cflag
|= CLOCAL
;
2612 attr
.c_cflag
|= CREAD
;
2615 /* Configure speed. */
2616 if (!NILP (Fplist_member (contact
, QCspeed
)))
2617 tem
= Fplist_get (contact
, QCspeed
);
2619 tem
= Fplist_get (p
->childp
, QCspeed
);
2621 err
= cfsetspeed (&attr
, XINT (tem
));
2623 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2624 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2626 /* Configure bytesize. */
2627 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2628 tem
= Fplist_get (contact
, QCbytesize
);
2630 tem
= Fplist_get (p
->childp
, QCbytesize
);
2632 tem
= make_number (8);
2634 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2635 error (":bytesize must be nil (8), 7, or 8");
2636 summary
[0] = XINT (tem
) + '0';
2637 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2638 attr
.c_cflag
&= ~CSIZE
;
2639 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2641 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2642 if (XINT (tem
) != 8)
2643 error ("Bytesize cannot be changed");
2645 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2647 /* Configure parity. */
2648 if (!NILP (Fplist_member (contact
, QCparity
)))
2649 tem
= Fplist_get (contact
, QCparity
);
2651 tem
= Fplist_get (p
->childp
, QCparity
);
2652 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2653 error (":parity must be nil (no parity), `even', or `odd'");
2654 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2655 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2656 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2661 else if (EQ (tem
, Qeven
))
2664 attr
.c_cflag
|= PARENB
;
2665 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2667 else if (EQ (tem
, Qodd
))
2670 attr
.c_cflag
|= (PARENB
| PARODD
);
2671 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2674 /* Don't error on no parity, which should be set by cfmakeraw. */
2676 error ("Parity cannot be configured");
2678 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2680 /* Configure stopbits. */
2681 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2682 tem
= Fplist_get (contact
, QCstopbits
);
2684 tem
= Fplist_get (p
->childp
, QCstopbits
);
2686 tem
= make_number (1);
2688 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2689 error (":stopbits must be nil (1 stopbit), 1, or 2");
2690 summary
[2] = XINT (tem
) + '0';
2691 #if defined (CSTOPB)
2692 attr
.c_cflag
&= ~CSTOPB
;
2693 if (XINT (tem
) == 2)
2694 attr
.c_cflag
|= CSTOPB
;
2696 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2697 if (XINT (tem
) != 1)
2698 error ("Stopbits cannot be configured");
2700 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2702 /* Configure flowcontrol. */
2703 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2704 tem
= Fplist_get (contact
, QCflowcontrol
);
2706 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2707 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2708 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2709 #if defined (CRTSCTS)
2710 attr
.c_cflag
&= ~CRTSCTS
;
2712 #if defined (CNEW_RTSCTS)
2713 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2715 #if defined (IXON) && defined (IXOFF)
2716 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2720 /* Already configured. */
2722 else if (EQ (tem
, Qhw
))
2724 #if defined (CRTSCTS)
2725 attr
.c_cflag
|= CRTSCTS
;
2726 #elif defined (CNEW_RTSCTS)
2727 attr
.c_cflag
|= CNEW_RTSCTS
;
2729 error ("Hardware flowcontrol (RTS/CTS) not supported");
2732 else if (EQ (tem
, Qsw
))
2734 #if defined (IXON) && defined (IXOFF)
2735 attr
.c_iflag
|= (IXON
| IXOFF
);
2737 error ("Software flowcontrol (XON/XOFF) not supported");
2740 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2742 /* Activate configuration. */
2743 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2745 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2747 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2748 p
->childp
= childp2
;
2751 #endif /* not DOS_NT */
2753 /* System depended enumeration of and access to system processes a-la ps(1). */
2757 /* Process enumeration and access via /proc. */
2760 list_system_processes (void)
2762 Lisp_Object procdir
, match
, proclist
, next
;
2763 struct gcpro gcpro1
, gcpro2
;
2764 register Lisp_Object tail
;
2766 GCPRO2 (procdir
, match
);
2767 /* For every process on the system, there's a directory in the
2768 "/proc" pseudo-directory whose name is the numeric ID of that
2770 procdir
= build_string ("/proc");
2771 match
= build_string ("[0-9]+");
2772 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2774 /* `proclist' gives process IDs as strings. Destructively convert
2775 each string into a number. */
2776 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2779 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2783 /* directory_files_internal returns the files in reverse order; undo
2785 proclist
= Fnreverse (proclist
);
2789 /* The WINDOWSNT implementation is in w32.c.
2790 The MSDOS implementation is in dosfns.c. */
2791 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2794 list_system_processes (void)
2799 #endif /* !defined (WINDOWSNT) */
2803 time_from_jiffies (unsigned long long tval
, long hz
,
2804 time_t *sec
, unsigned *usec
)
2806 unsigned long long ullsec
;
2810 tval
-= ullsec
* hz
;
2811 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2813 *usec
= tval
* 1000000 / hz
;
2815 *usec
= tval
/ (hz
/ 1000000);
2819 ltime_from_jiffies (unsigned long long tval
, long hz
)
2824 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2826 return list3 (make_number ((sec
>> 16) & 0xffff),
2827 make_number (sec
& 0xffff),
2828 make_number (usec
));
2832 get_up_time (time_t *sec
, unsigned *usec
)
2839 fup
= fopen ("/proc/uptime", "r");
2843 double uptime
, idletime
;
2845 /* The numbers in /proc/uptime use C-locale decimal point, but
2846 we already set ourselves to the C locale (see `fixup_locale'
2848 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2851 *usec
= (uptime
- *sec
) * 1000000;
2858 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2859 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2862 procfs_ttyname (int rdev
)
2865 char name
[PATH_MAX
];
2868 fdev
= fopen ("/proc/tty/drivers", "r");
2873 unsigned long minor_beg
, minor_end
;
2874 char minor
[25]; /* 2 32-bit numbers + dash */
2877 while (!feof (fdev
) && !ferror (fdev
))
2879 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2880 && major
== MAJOR (rdev
))
2882 minor_beg
= strtoul (minor
, &endp
, 0);
2884 minor_end
= minor_beg
;
2885 else if (*endp
== '-')
2886 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2890 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2892 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2900 return build_string (name
);
2903 static unsigned long
2904 procfs_get_total_memory (void)
2907 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2910 fmem
= fopen ("/proc/meminfo", "r");
2914 unsigned long entry_value
;
2915 char entry_name
[20]; /* the longest I saw is 13+1 */
2917 while (!feof (fmem
) && !ferror (fmem
))
2919 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2920 && strcmp (entry_name
, "MemTotal:") == 0)
2922 retval
= entry_value
;
2933 system_process_attributes (Lisp_Object pid
)
2935 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2939 long clocks_per_sec
;
2941 char procbuf
[1025], *p
, *q
;
2944 const char *cmd
= NULL
;
2945 char *cmdline
= NULL
;
2946 size_t cmdsize
= 0, cmdline_size
;
2948 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2949 unsigned long long utime
, stime
, cutime
, cstime
, start
;
2950 long priority
, nice
, rss
;
2951 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2954 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2956 Lisp_Object attrs
= Qnil
;
2957 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2958 struct gcpro gcpro1
, gcpro2
;
2959 EMACS_INT uid_eint
, gid_eint
;
2961 CHECK_NUMBER_OR_FLOAT (pid
);
2962 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2963 sprintf (procfn
, "/proc/%u", proc_id
);
2964 if (stat (procfn
, &st
) < 0)
2967 GCPRO2 (attrs
, decoded_cmd
);
2971 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2973 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2975 pw
= getpwuid (uid
);
2978 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2982 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2984 gr
= getgrgid (gid
);
2987 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2989 strcpy (fn
, procfn
);
2990 procfn_end
= fn
+ strlen (fn
);
2991 strcpy (procfn_end
, "/stat");
2992 fd
= emacs_open (fn
, O_RDONLY
, 0);
2993 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2995 procbuf
[nread
] = '\0';
2998 p
= strchr (p
, '(');
3001 q
= strrchr (p
+ 1, ')');
3016 /* Command name is encoded in locale-coding-system; decode it. */
3017 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
3018 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3019 Vlocale_coding_system
, 0);
3020 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3024 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
3026 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
3027 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
3028 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
3029 &minflt
, &cminflt
, &majflt
, &cmajflt
,
3030 &utime
, &stime
, &cutime
, &cstime
,
3031 &priority
, &nice
, &thcount
, &start
, &vsize
, &rss
);
3036 state_str
[1] = '\0';
3037 tem
= build_string (state_str
);
3038 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3040 /* Stops GCC whining about limited range of data type. */
3045 thcount_eint
= thcount
;
3046 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
3047 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
3048 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
3049 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3050 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
3051 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3052 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3053 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
3054 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
3055 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3056 if (clocks_per_sec
< 0)
3057 clocks_per_sec
= 100;
3058 attrs
= Fcons (Fcons (Qutime
,
3059 ltime_from_jiffies (utime
, clocks_per_sec
)),
3061 attrs
= Fcons (Fcons (Qstime
,
3062 ltime_from_jiffies (stime
, clocks_per_sec
)),
3064 attrs
= Fcons (Fcons (Qtime
,
3065 ltime_from_jiffies (stime
+utime
, clocks_per_sec
)),
3067 attrs
= Fcons (Fcons (Qcutime
,
3068 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3070 attrs
= Fcons (Fcons (Qcstime
,
3071 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3073 attrs
= Fcons (Fcons (Qctime
,
3074 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
3076 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3077 attrs
= Fcons (Fcons (Qnice
, make_number (nice
)), attrs
);
3078 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
3079 EMACS_GET_TIME (tnow
);
3080 get_up_time (&sec
, &usec
);
3081 EMACS_SET_SECS (telapsed
, sec
);
3082 EMACS_SET_USECS (telapsed
, usec
);
3083 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
3084 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
3085 EMACS_SET_SECS (tstart
, sec
);
3086 EMACS_SET_USECS (tstart
, usec
);
3087 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
3088 attrs
= Fcons (Fcons (Qstart
,
3090 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
3092 (EMACS_SECS (tstart
) & 0xffff),
3094 (EMACS_USECS (tstart
)))),
3096 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
3097 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
3098 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
3099 attrs
= Fcons (Fcons (Qetime
,
3101 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
3103 (EMACS_SECS (telapsed
) & 0xffff),
3105 (EMACS_USECS (telapsed
)))),
3107 time_from_jiffies (utime
+ stime
, clocks_per_sec
, &sec
, &usec
);
3108 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
3111 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3112 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3115 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3122 strcpy (procfn_end
, "/cmdline");
3123 fd
= emacs_open (fn
, O_RDONLY
, 0);
3126 for (cmdline_size
= 0; emacs_read (fd
, &c
, 1) == 1; cmdline_size
++)
3128 if (isspace (c
) || c
== '\\')
3129 cmdline_size
++; /* for later quoting, see below */
3133 cmdline
= xmalloc (cmdline_size
+ 1);
3134 lseek (fd
, 0L, SEEK_SET
);
3136 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
3137 cmdline
[nread
++] = '\0';
3140 /* Assigning zero to `nread' makes us skip the following
3141 two loops, assign zero to cmdline_size, and enter the
3142 following `if' clause that handles unknown command
3146 /* We don't want trailing null characters. */
3147 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
3149 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
3151 /* Escape-quote whitespace and backslashes. */
3152 if (isspace (*p
) || *p
== '\\')
3154 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
3158 else if (*p
== '\0')
3161 cmdline_size
= nread
;
3168 cmdsize
= strlen (cmd
);
3169 cmdline_size
= cmdsize
+ 2;
3170 cmdline
= xmalloc (cmdline_size
+ 1);
3171 strcpy (cmdline
, "[");
3172 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
3175 /* Command line is encoded in locale-coding-system; decode it. */
3176 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
3177 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3178 Vlocale_coding_system
, 0);
3180 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3187 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3189 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3190 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3191 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3192 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3193 #undef _FILE_OFFSET_BITS
3195 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3200 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3201 #define _FILE_OFFSET_BITS 64
3202 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3205 system_process_attributes (Lisp_Object pid
)
3207 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3212 struct psinfo pinfo
;
3215 int proc_id
, uid
, gid
;
3216 Lisp_Object attrs
= Qnil
;
3217 Lisp_Object decoded_cmd
, tem
;
3218 struct gcpro gcpro1
, gcpro2
;
3219 EMACS_INT uid_eint
, gid_eint
;
3221 CHECK_NUMBER_OR_FLOAT (pid
);
3222 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
3223 sprintf (procfn
, "/proc/%u", proc_id
);
3224 if (stat (procfn
, &st
) < 0)
3227 GCPRO2 (attrs
, decoded_cmd
);
3231 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
3233 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
3235 pw
= getpwuid (uid
);
3238 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3242 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
3244 gr
= getgrgid (gid
);
3247 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3249 strcpy (fn
, procfn
);
3250 procfn_end
= fn
+ strlen (fn
);
3251 strcpy (procfn_end
, "/psinfo");
3252 fd
= emacs_open (fn
, O_RDONLY
, 0);
3254 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3256 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3257 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3258 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3262 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3263 state_str
[1] = '\0';
3264 tem
= build_string (state_str
);
3265 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3268 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3269 need to get a string from it. */
3271 /* FIXME: missing: Qtpgid */
3283 Are they available? */
3285 attrs
= Fcons (Fcons (Qtime
,
3286 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3287 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3288 make_number (pinfo
.pr_time
.tv_nsec
))),
3291 attrs
= Fcons (Fcons (Qctime
,
3292 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3293 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3294 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3297 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3298 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3299 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3301 attrs
= Fcons (Fcons (Qstart
,
3302 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3303 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3304 make_number (pinfo
.pr_start
.tv_nsec
))),
3306 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3307 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3309 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3310 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3311 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3314 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3315 strlen (pinfo
.pr_fname
)),
3316 Vlocale_coding_system
, 0);
3317 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3319 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3320 strlen (pinfo
.pr_psargs
)),
3321 Vlocale_coding_system
, 0);
3322 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3332 /* The WINDOWSNT implementation is in w32.c.
3333 The MSDOS implementation is in dosfns.c. */
3334 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3337 system_process_attributes (Lisp_Object pid
)
3342 #endif /* !defined (WINDOWSNT) */
3345 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
3346 (do not change this comment) */