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>
79 #ifdef HAVE_SYS_UTSNAME_H
80 #include <sys/utsname.h>
82 #endif /* HAVE_SYS_UTSNAME_H */
87 #include "termhooks.h"
90 #include "dispextern.h"
92 #include "cm.h" /* for reset_sys_modes */
96 /* In process.h which conflicts with the local copy. */
98 int _cdecl
_spawnlp (int, const char *, const char *, ...);
99 int _cdecl
_getpid (void);
100 extern char *getwd (char *);
103 #include "syssignal.h"
110 #ifndef HAVE_STRUCT_UTIMBUF
111 /* We want to use utime rather than utimes, but we couldn't find the
112 structure declaration. We'll use the traditional one. */
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
129 void croak (char *) NO_RETURN
;
131 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
133 SIGMASKTYPE sigprocmask_set
;
136 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
138 /* Return the current working directory. Returns NULL on errors.
139 Any other returned value must be freed with free. This is used
140 only when get_current_dir_name is not defined on the system. */
142 get_current_dir_name (void)
146 struct stat dotstat
, pwdstat
;
147 /* If PWD is accurate, use it instead of calling getwd. PWD is
148 sometimes a nicer name, and using it may avoid a fatal error if a
149 parent directory is searchable but not readable. */
150 if ((pwd
= getenv ("PWD")) != 0
151 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
152 && stat (pwd
, &pwdstat
) == 0
153 && stat (".", &dotstat
) == 0
154 && dotstat
.st_ino
== pwdstat
.st_ino
155 && dotstat
.st_dev
== pwdstat
.st_dev
157 && strlen (pwd
) < MAXPATHLEN
161 buf
= (char *) malloc (strlen (pwd
) + 1);
169 size_t buf_size
= 1024;
170 buf
= (char *) malloc (buf_size
);
175 if (getcwd (buf
, buf_size
) == buf
)
179 int tmp_errno
= errno
;
185 buf
= (char *) realloc (buf
, buf_size
);
193 /* We need MAXPATHLEN here. */
194 buf
= (char *) malloc (MAXPATHLEN
+ 1);
197 if (getwd (buf
) == NULL
)
199 int tmp_errno
= errno
;
211 /* Discard pending input on all input descriptors. */
214 discard_tty_input (void)
217 struct emacs_tty buf
;
222 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
223 while (dos_keyread () != -1)
225 #else /* not MSDOS */
227 struct tty_display_info
*tty
;
228 for (tty
= tty_list
; tty
; tty
= tty
->next
)
230 if (tty
->input
) /* Is the device suspended? */
232 emacs_get_tty (fileno (tty
->input
), &buf
);
233 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
237 #endif /* not MSDOS */
238 #endif /* not WINDOWSNT */
244 /* Arrange for character C to be read as the next input from
246 XXX What if we have multiple ttys?
252 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
255 /* Should perhaps error if in batch mode */
257 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
258 #else /* no TIOCSTI */
259 error ("Cannot stuff terminal input characters in this version of Unix");
260 #endif /* no TIOCSTI */
266 init_baud_rate (int fd
)
276 #else /* not DOS_NT */
281 emacs_ospeed
= cfgetospeed (&sg
);
282 #endif /* not DOS_NT */
285 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
286 ? baud_convert
[emacs_ospeed
] : 9600);
293 int wait_debugging
; /* Set nonzero to make following function work under dbx
294 (at least for bsd). */
297 wait_for_termination_signal (void)
301 /* Wait for subprocess with process id `pid' to terminate and
302 make sure it will get eliminated (not remain forever as a zombie) */
305 wait_for_termination (int pid
)
309 #if defined (BSD_SYSTEM) || defined (HPUX)
310 /* Note that kill returns -1 even if the process is just a zombie now.
311 But inevitably a SIGCHLD interrupt should be generated
312 and child_sig will do wait3 and make the process go away. */
313 /* There is some indication that there is a bug involved with
314 termination of subprocesses, perhaps involving a kernel bug too,
315 but no idea what it is. Just as a hunch we signal SIGCHLD to see
316 if that causes the problem to go away or get worse. */
317 sigsetmask (sigmask (SIGCHLD
));
318 if (0 > kill (pid
, 0))
320 sigsetmask (SIGEMPTYMASK
);
321 kill (getpid (), SIGCHLD
);
327 sigpause (SIGEMPTYMASK
);
328 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
332 #else /* not WINDOWSNT */
333 sigblock (sigmask (SIGCHLD
));
335 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
337 sigunblock (sigmask (SIGCHLD
));
341 sigsuspend (&empty_mask
);
342 #endif /* not WINDOWSNT */
343 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
348 * flush any pending output
349 * (may flush input as well; it does not matter the way we use it)
353 flush_pending_output (int channel
)
355 /* FIXME: maybe this function should be removed */
358 /* Set up the terminal at the other end of a pseudo-terminal that
359 we will be controlling an inferior through.
360 It should not echo or do line-editing, since that is done
361 in Emacs. No padding needed for insertion into an Emacs buffer. */
364 child_setup_tty (int out
)
369 emacs_get_tty (out
, &s
);
370 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
371 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
373 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
374 Some versions of GNU Hurd do not have FFDLY? */
376 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
377 /* No output delays */
379 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
380 /* No output delays */
383 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
384 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
386 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
389 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
392 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
394 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
395 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
396 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
397 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
400 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
403 #ifdef SIGNALS_VIA_CHARACTERS
404 /* the QUIT and INTR character are used in process_send_signal
405 so set them here to something useful. */
406 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
407 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
408 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
409 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
410 #endif /* not SIGNALS_VIA_CHARACTERS */
413 /* Also, PTY overloads NUL and BREAK.
414 don't ignore break, but don't signal either, so it looks like NUL. */
415 s
.main
.c_iflag
&= ~IGNBRK
;
416 s
.main
.c_iflag
&= ~BRKINT
;
417 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
418 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
419 would force it to 0377. That looks like duplicated code. */
420 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
423 /* We originally enabled ICANON (and set VEOF to 04), and then had
424 proces.c send additional EOF chars to flush the output when faced
425 with long lines, but this leads to weird effects when the
426 subprocess has disabled ICANON and ends up seeing those spurious
427 extra EOFs. So we don't send EOFs any more in
428 process.c:send_process. First we tried to disable ICANON by
429 default, so if a subsprocess sets up ICANON, it's his problem (or
430 the Elisp package that talks to it) to deal with lines that are
431 too long. But this disables some features, such as the ability
432 to send EOF signals. So we re-enabled ICANON but there is no
433 more "send eof to flush" going on (which is wrong and unportable
434 in itself). The correct way to handle too much output is to
435 buffer what could not be written and then write it again when
436 select returns ok for writing. This has it own set of
437 problems. Write is now asynchronous, is that a problem? How much
438 do we buffer, and what do we do when that limit is reached? */
440 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
441 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
442 #if 0 /* These settings only apply to non-ICANON mode. */
443 s
.main
.c_cc
[VMIN
] = 1;
444 s
.main
.c_cc
[VTIME
] = 0;
447 emacs_set_tty (out
, &s
, 0);
448 #endif /* not WINDOWSNT */
450 #endif /* not MSDOS */
453 /* Record a signal code and the handler for it. */
457 SIGTYPE (*handler
) (int);
460 static void save_signal_handlers (struct save_signal
*);
461 static void restore_signal_handlers (struct save_signal
*);
463 /* Suspend the Emacs process; give terminal to its superior. */
468 #if defined (SIGTSTP) && !defined (MSDOS)
471 int pgrp
= EMACS_GETPGRP (0);
472 EMACS_KILLPG (pgrp
, SIGTSTP
);
475 #else /* No SIGTSTP */
476 /* On a system where suspending is not implemented,
477 instead fork a subshell and let it talk directly to the terminal
481 #endif /* no SIGTSTP */
484 /* Fork a subshell. */
489 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
491 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
494 struct save_signal saved_handlers
[5];
496 unsigned char *str
= 0;
499 saved_handlers
[0].code
= SIGINT
;
500 saved_handlers
[1].code
= SIGQUIT
;
501 saved_handlers
[2].code
= SIGTERM
;
503 saved_handlers
[3].code
= SIGIO
;
504 saved_handlers
[4].code
= 0;
506 saved_handlers
[3].code
= 0;
509 /* Mentioning current_buffer->buffer would mean including buffer.h,
510 which somehow wedges the hp compiler. So instead... */
512 dir
= intern ("default-directory");
513 if (NILP (Fboundp (dir
)))
515 dir
= Fsymbol_value (dir
);
519 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
520 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
522 memcpy (str
, SDATA (dir
), len
);
523 if (str
[len
- 1] != '/') str
[len
++] = '/';
529 save_signal_handlers (saved_handlers
);
530 synch_process_alive
= 1;
534 error ("Can't spawn subshell");
541 #ifdef DOS_NT /* MW, Aug 1993 */
544 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
547 sh
= (char *) egetenv ("SHELL");
551 /* Use our buffer's default directory for the subshell. */
553 chdir ((char *) str
);
555 close_process_descs (); /* Close Emacs's pipes/ptys */
557 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
559 char *epwd
= getenv ("PWD");
560 char old_pwd
[MAXPATHLEN
+1+4];
562 /* If PWD is set, pass it with corrected value. */
565 strcpy (old_pwd
, epwd
);
566 if (str
[len
- 1] == '/')
568 setenv ("PWD", str
, 1);
573 putenv (old_pwd
); /* restore previous value */
575 #else /* not MSDOS */
577 /* Waits for process completion */
578 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
581 write (1, "Can't execute subshell", 22);
582 #else /* not WINDOWSNT */
583 execlp (sh
, sh
, (char *) 0);
584 write (1, "Can't execute subshell", 22);
586 #endif /* not WINDOWSNT */
587 #endif /* not MSDOS */
590 /* Do this now if we did not do it before. */
592 save_signal_handlers (saved_handlers
);
593 synch_process_alive
= 1;
597 wait_for_termination (pid
);
599 restore_signal_handlers (saved_handlers
);
600 synch_process_alive
= 0;
604 save_signal_handlers (struct save_signal
*saved_handlers
)
606 while (saved_handlers
->code
)
608 saved_handlers
->handler
609 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
615 restore_signal_handlers (struct save_signal
*saved_handlers
)
617 while (saved_handlers
->code
)
619 signal (saved_handlers
->code
, saved_handlers
->handler
);
625 /* If SIGIO is broken, don't do anything. */
642 unrequest_sigio (void)
649 int old_fcntl_flags
[MAXDESC
];
655 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
656 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
658 interrupts_deferred
= 0;
665 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
669 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
670 /* XXX Uhm, FASYNC is not used anymore here. */
671 /* XXX Yeah, but you need it for SIGIO, don't you? */
680 sigunblock (sigmask (SIGWINCH
));
682 sigunblock (sigmask (SIGIO
));
684 interrupts_deferred
= 0;
688 unrequest_sigio (void)
693 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
699 sigblock (sigmask (SIGWINCH
));
701 sigblock (sigmask (SIGIO
));
702 interrupts_deferred
= 1;
705 #else /* no FASYNC */
711 if (noninteractive
|| read_socket_hook
)
714 croak ("request_sigio");
718 unrequest_sigio (void)
720 if (noninteractive
|| read_socket_hook
)
723 croak ("unrequest_sigio");
732 /* Getting and setting emacs_tty structures. */
734 /* Set *TC to the parameters associated with the terminal FD.
735 Return zero if all's well, or -1 if we ran into an error we
736 couldn't deal with. */
738 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
740 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
742 /* We have those nifty POSIX tcmumbleattr functions. */
743 memset (&settings
->main
, 0, sizeof (settings
->main
));
744 if (tcgetattr (fd
, &settings
->main
) < 0)
748 /* We have survived the tempest. */
753 /* Set the parameters of the tty on FD according to the contents of
754 *SETTINGS. If FLUSHP is non-zero, we discard input.
755 Return 0 if all went well, and -1 if anything failed. */
758 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
760 /* Set the primary parameters - baud rate, character size, etcetera. */
763 /* We have those nifty POSIX tcmumbleattr functions.
764 William J. Smith <wjs@wiis.wang.com> writes:
765 "POSIX 1003.1 defines tcsetattr to return success if it was
766 able to perform any of the requested actions, even if some
767 of the requested actions could not be performed.
768 We must read settings back to ensure tty setup properly.
769 AIX requires this to keep tty from hanging occasionally." */
770 /* This make sure that we don't loop indefinitely in here. */
771 for (i
= 0 ; i
< 10 ; i
++)
772 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
783 memset (&new, 0, sizeof (new));
784 /* Get the current settings, and see if they're what we asked for. */
785 tcgetattr (fd
, &new);
786 /* We cannot use memcmp on the whole structure here because under
787 * aix386 the termios structure has some reserved field that may
790 if ( new.c_iflag
== settings
->main
.c_iflag
791 && new.c_oflag
== settings
->main
.c_oflag
792 && new.c_cflag
== settings
->main
.c_cflag
793 && new.c_lflag
== settings
->main
.c_lflag
794 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
801 /* We have survived the tempest. */
808 int old_fcntl_owner
[MAXDESC
];
809 #endif /* F_SETOWN */
811 /* This may also be defined in stdio,
812 but if so, this does no harm,
813 and using the same name avoids wasting the other one's space. */
816 unsigned char _sobuf
[BUFSIZ
+8];
821 /* Initialize the terminal mode on all tty devices that are currently
825 init_all_sys_modes (void)
827 struct tty_display_info
*tty
;
828 for (tty
= tty_list
; tty
; tty
= tty
->next
)
829 init_sys_modes (tty
);
832 /* Initialize the terminal mode on the given tty device. */
835 init_sys_modes (struct tty_display_info
*tty_out
)
837 struct emacs_tty tty
;
839 Vtty_erase_char
= Qnil
;
844 if (!tty_out
->output
)
845 return; /* The tty is suspended. */
847 if (! tty_out
->old_tty
)
848 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
850 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
852 tty
= *tty_out
->old_tty
;
854 #if !defined (DOS_NT)
855 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
857 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
858 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
859 #ifdef INLCR /* I'm just being cautious,
860 since I can't check how widespread INLCR is--rms. */
861 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
864 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
866 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
867 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
869 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
871 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
872 if (tty_out
->flow_control
)
874 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
876 tty
.main
.c_iflag
&= ~IXANY
;
880 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
881 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
883 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
885 if (tty_out
->meta_key
)
887 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
888 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
891 if (tty_out
->input
== stdin
)
893 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
894 /* Set up C-g for both SIGQUIT and SIGINT.
895 We don't know which we will get, but we handle both alike
896 so which one it really gives us does not matter. */
897 tty
.main
.c_cc
[VQUIT
] = quit_char
;
901 /* We normally don't get interrupt or quit signals from tty
902 devices other than our controlling terminal; therefore,
903 we must handle C-g as normal input. Unfortunately, this
904 means that the interrupt and quit feature must be
905 disabled on secondary ttys, or we would not even see the
908 Note that even though emacsclient could have special code
909 to pass SIGINT to Emacs, we should _not_ enable
910 interrupt/quit keys for emacsclient frames. This means
911 that we can't break out of loops in C code from a
912 secondary tty frame, but we can always decide what
913 display the C-g came from, which is more important from a
914 usability point of view. (Consider the case when two
915 people work together using the same Emacs instance.) */
916 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
917 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
919 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
920 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
922 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
927 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
930 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
932 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
933 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
936 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
939 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
940 #endif /* VREPRINT */
942 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
945 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
946 #endif /* VDISCARD */
948 if (tty_out
->flow_control
)
951 tty
.main
.c_cc
[VSTART
] = '\021';
954 tty
.main
.c_cc
[VSTOP
] = '\023';
960 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
963 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
968 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
969 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
970 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
971 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
972 if (tty_out
->flow_control
)
975 tty
.main
.c_cc
[VSTART
] = '\021';
978 tty
.main
.c_cc
[VSTOP
] = '\023';
981 /* Also, PTY overloads NUL and BREAK.
982 don't ignore break, but don't signal either, so it looks like NUL.
983 This really serves a purpose only if running in an XTERM window
984 or via TELNET or the like, but does no harm elsewhere. */
985 tty
.main
.c_iflag
&= ~IGNBRK
;
986 tty
.main
.c_iflag
&= ~BRKINT
;
988 #endif /* not DOS_NT */
990 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
991 if (!tty_out
->term_initted
)
992 internal_terminal_init ();
996 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
998 /* This code added to insure that, if flow-control is not to be used,
999 we have an unlocked terminal at the start. */
1002 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1005 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1008 #if !defined (DOS_NT)
1010 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1015 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1016 if (interrupt_input
)
1018 old_fcntl_owner
[fileno (tty_out
->input
)] =
1019 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1020 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1021 init_sigio (fileno (tty_out
->input
));
1023 if (gpm_tty
== tty_out
)
1025 /* Arrange for mouse events to give us SIGIO signals. */
1026 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1027 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1028 init_sigio (gpm_fd
);
1030 #endif /* HAVE_GPM */
1032 #endif /* F_GETOWN */
1033 #endif /* F_SETFL */
1036 /* This symbol is defined on recent USG systems.
1037 Someone says without this call USG won't really buffer the file
1038 even with a call to setbuf. */
1039 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1041 setbuf (tty_out
->output
, (char *) _sobuf
);
1044 if (tty_out
->terminal
->set_terminal_modes_hook
)
1045 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1047 if (!tty_out
->term_initted
)
1049 Lisp_Object tail
, frame
;
1050 FOR_EACH_FRAME (tail
, frame
)
1052 /* XXX This needs to be revised. */
1053 if (FRAME_TERMCAP_P (XFRAME (frame
))
1054 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1055 init_frame_faces (XFRAME (frame
));
1059 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1061 /* We used to call "direct_output_forward_char(0)" here,
1062 but it's not clear why, since it may not do anything anyway. */
1066 Lisp_Object tail
, frame
;
1068 FOR_EACH_FRAME (tail
, frame
)
1070 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1071 || FRAME_MSDOS_P (XFRAME (frame
)))
1072 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1073 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1077 tty_out
->term_initted
= 1;
1080 /* Return nonzero if safe to use tabs in output.
1081 At the time this is called, init_sys_modes has not been done yet. */
1084 tabs_safe_p (int fd
)
1086 struct emacs_tty etty
;
1088 emacs_get_tty (fd
, &etty
);
1091 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1092 #else /* not TABDLY */
1094 #endif /* not TABDLY */
1100 /* Get terminal size from system.
1101 Store number of lines into *HEIGHTP and width into *WIDTHP.
1102 We store 0 if there's no valid information. */
1105 get_tty_size (int fd
, int *widthp
, int *heightp
)
1111 struct winsize size
;
1113 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1114 *widthp
= *heightp
= 0;
1117 *widthp
= size
.ws_col
;
1118 *heightp
= size
.ws_row
;
1124 /* SunOS - style. */
1125 struct ttysize size
;
1127 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1128 *widthp
= *heightp
= 0;
1131 *widthp
= size
.ts_cols
;
1132 *heightp
= size
.ts_lines
;
1137 *widthp
= ScreenCols ();
1138 *heightp
= ScreenRows ();
1139 #else /* system doesn't know size */
1143 #endif /* not SunOS-style */
1144 #endif /* not BSD-style */
1147 /* Set the logical window size associated with descriptor FD
1148 to HEIGHT and WIDTH. This is used mainly with ptys. */
1151 set_window_size (int fd
, int height
, int width
)
1156 struct winsize size
;
1157 size
.ws_row
= height
;
1158 size
.ws_col
= width
;
1160 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1161 return 0; /* error */
1168 /* SunOS - style. */
1169 struct ttysize size
;
1170 size
.ts_lines
= height
;
1171 size
.ts_cols
= width
;
1173 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1179 #endif /* not SunOS-style */
1180 #endif /* not BSD-style */
1185 /* Prepare all terminal devices for exiting Emacs. */
1188 reset_all_sys_modes (void)
1190 struct tty_display_info
*tty
;
1191 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1192 reset_sys_modes (tty
);
1195 /* Prepare the terminal for closing it; move the cursor to the
1196 bottom of the frame, turn off interrupt-driven I/O, etc. */
1199 reset_sys_modes (struct tty_display_info
*tty_out
)
1206 if (!tty_out
->term_initted
)
1209 if (!tty_out
->output
)
1210 return; /* The tty is suspended. */
1212 /* Go to and clear the last line of the terminal. */
1214 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1216 /* Code adapted from tty_clear_end_of_line. */
1217 if (tty_out
->TS_clr_line
)
1219 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1222 { /* have to do it the hard way */
1224 tty_turn_off_insert (tty_out
);
1226 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1228 fputc (' ', tty_out
->output
);
1232 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1233 fflush (tty_out
->output
);
1235 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1236 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1239 /* Avoid possible loss of output when changing terminal modes. */
1240 fsync (fileno (tty_out
->output
));
1244 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1245 if (interrupt_input
)
1247 reset_sigio (fileno (tty_out
->input
));
1248 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1249 old_fcntl_owner
[fileno (tty_out
->input
)]);
1251 #endif /* F_SETOWN */
1253 fcntl (fileno (tty_out
->input
), F_SETFL
,
1254 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1256 #endif /* F_SETFL */
1258 if (tty_out
->old_tty
)
1259 while (emacs_set_tty (fileno (tty_out
->input
),
1260 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1263 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1271 /* Set up the proper status flags for use of a pty. */
1276 /* I'm told that TOICREMOTE does not mean control chars
1277 "can't be sent" but rather that they don't have
1278 input-editing or signaling effects.
1279 That should be good, because we have other ways
1280 to do those things in Emacs.
1281 However, telnet mode seems not to work on 4.2.
1282 So TIOCREMOTE is turned off now. */
1284 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1285 will hang. In particular, the "timeout" feature (which
1286 causes a read to return if there is no data available)
1287 does this. Also it is known that telnet mode will hang
1288 in such a way that Emacs must be stopped (perhaps this
1289 is the same problem).
1291 If TIOCREMOTE is turned off, then there is a bug in
1292 hp-ux which sometimes loses data. Apparently the
1293 code which blocks the master process when the internal
1294 buffer fills up does not work. Other than this,
1295 though, everything else seems to work fine.
1297 Since the latter lossage is more benign, we may as well
1298 lose that way. -- cph */
1300 #if defined(UNIX98_PTYS)
1303 ioctl (fd
, FIONBIO
, &on
);
1308 #endif /* HAVE_PTYS */
1310 /* init_system_name sets up the string for the Lisp function
1311 system-name to return. */
1313 extern Lisp_Object Vsystem_name
;
1316 #include <sys/socket.h>
1318 #endif /* HAVE_SOCKETS */
1321 #ifndef HAVE_H_ERRNO
1324 #endif /* TRY_AGAIN */
1327 init_system_name (void)
1329 #ifndef HAVE_GETHOSTNAME
1332 Vsystem_name
= build_string (uts
.nodename
);
1333 #else /* HAVE_GETHOSTNAME */
1334 unsigned int hostname_size
= 256;
1335 char *hostname
= (char *) alloca (hostname_size
);
1337 /* Try to get the host name; if the buffer is too short, try
1338 again. Apparently, the only indication gethostname gives of
1339 whether the buffer was large enough is the presence or absence
1340 of a '\0' in the string. Eech. */
1343 gethostname (hostname
, hostname_size
- 1);
1344 hostname
[hostname_size
- 1] = '\0';
1346 /* Was the buffer large enough for the '\0'? */
1347 if (strlen (hostname
) < hostname_size
- 1)
1350 hostname_size
<<= 1;
1351 hostname
= (char *) alloca (hostname_size
);
1354 /* Turn the hostname into the official, fully-qualified hostname.
1355 Don't do this if we're going to dump; this can confuse system
1356 libraries on some machines and make the dumped emacs core dump. */
1359 #endif /* not CANNOT_DUMP */
1360 if (! strchr (hostname
, '.'))
1363 #ifdef HAVE_GETADDRINFO
1364 struct addrinfo
*res
;
1365 struct addrinfo hints
;
1368 memset (&hints
, 0, sizeof (hints
));
1369 hints
.ai_socktype
= SOCK_STREAM
;
1370 hints
.ai_flags
= AI_CANONNAME
;
1372 for (count
= 0;; count
++)
1374 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1375 || ret
!= EAI_AGAIN
)
1380 Fsleep_for (make_number (1), Qnil
);
1385 struct addrinfo
*it
= res
;
1388 char *fqdn
= it
->ai_canonname
;
1389 if (fqdn
&& strchr (fqdn
, '.')
1390 && strcmp (fqdn
, "localhost.localdomain") != 0)
1396 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1397 strcpy (hostname
, it
->ai_canonname
);
1401 #else /* !HAVE_GETADDRINFO */
1403 for (count
= 0;; count
++)
1409 hp
= gethostbyname (hostname
);
1411 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1418 Fsleep_for (make_number (1), Qnil
);
1423 char *fqdn
= (char *) hp
->h_name
;
1425 if (!strchr (fqdn
, '.'))
1427 /* We still don't have a fully qualified domain name.
1428 Try to find one in the list of alternate names */
1429 char **alias
= hp
->h_aliases
;
1431 && (!strchr (*alias
, '.')
1432 || !strcmp (*alias
, "localhost.localdomain")))
1439 #endif /* !HAVE_GETADDRINFO */
1441 #endif /* HAVE_SOCKETS */
1442 Vsystem_name
= build_string (hostname
);
1443 #endif /* HAVE_GETHOSTNAME */
1446 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1447 if (*p
== ' ' || *p
== '\t')
1452 /* POSIX signals support - DJB */
1453 /* Anyone with POSIX signals should have ANSI C declarations */
1455 sigset_t empty_mask
, full_mask
;
1460 sys_signal (int signal_number
, signal_handler_t action
)
1462 struct sigaction new_action
, old_action
;
1463 sigemptyset (&new_action
.sa_mask
);
1464 new_action
.sa_handler
= action
;
1465 new_action
.sa_flags
= 0;
1466 #if defined (SA_RESTART)
1467 /* Emacs mostly works better with restartable system services. If this
1468 flag exists, we probably want to turn it on here.
1469 However, on some systems this resets the timeout of `select'
1470 which means that `select' never finishes if it keeps getting signals.
1471 BROKEN_SA_RESTART is defined on those systems. */
1472 /* It's not clear why the comment above says "mostly works better". --Stef
1473 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1474 for pending input so we need long-running syscalls to be interrupted
1475 after a signal that sets the interrupt_input_pending flag. */
1476 /* Non-interactive keyboard input goes through stdio, where we always
1477 want restartable system calls. */
1478 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1481 new_action
.sa_flags
= SA_RESTART
;
1483 sigaction (signal_number
, &new_action
, &old_action
);
1484 return (old_action
.sa_handler
);
1487 #endif /* WINDOWSNT */
1490 /* If we're compiling with GCC, we don't need this function, since it
1491 can be written as a macro. */
1493 sys_sigmask (int sig
)
1496 sigemptyset (&mask
);
1497 sigaddset (&mask
, sig
);
1502 /* I'd like to have these guys return pointers to the mask storage in here,
1503 but there'd be trouble if the code was saving multiple masks. I'll be
1504 safe and pass the structure. It normally won't be more than 2 bytes
1508 sys_sigblock (sigset_t new_mask
)
1511 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1516 sys_sigunblock (sigset_t new_mask
)
1519 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1524 sys_sigsetmask (sigset_t new_mask
)
1527 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1532 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1533 static char *my_sys_siglist
[NSIG
];
1537 # define sys_siglist my_sys_siglist
1543 sigemptyset (&empty_mask
);
1544 sigfillset (&full_mask
);
1546 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1550 sys_siglist
[SIGABRT
] = "Aborted";
1553 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1556 sys_siglist
[SIGALRM
] = "Alarm clock";
1559 sys_siglist
[SIGBUS
] = "Bus error";
1562 sys_siglist
[SIGCLD
] = "Child status changed";
1565 sys_siglist
[SIGCHLD
] = "Child status changed";
1568 sys_siglist
[SIGCONT
] = "Continued";
1571 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1574 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1577 sys_siglist
[SIGEMT
] = "Emulation trap";
1580 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1583 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1586 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1589 sys_siglist
[SIGHUP
] = "Hangup";
1592 sys_siglist
[SIGILL
] = "Illegal instruction";
1595 sys_siglist
[SIGINT
] = "Interrupt";
1598 sys_siglist
[SIGIO
] = "I/O possible";
1601 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1604 sys_siglist
[SIGIOT
] = "IOT trap";
1607 sys_siglist
[SIGKILL
] = "Killed";
1610 sys_siglist
[SIGLOST
] = "Resource lost";
1613 sys_siglist
[SIGLWP
] = "SIGLWP";
1616 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1619 sys_siglist
[SIGWIND
] = "SIGPHONE";
1622 sys_siglist
[SIGPIPE
] = "Broken pipe";
1625 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1628 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1631 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1634 sys_siglist
[SIGPWR
] = "Power-fail restart";
1637 sys_siglist
[SIGQUIT
] = "Quit";
1640 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1643 sys_siglist
[SIGSAK
] = "Secure attention";
1646 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1649 sys_siglist
[SIGSOUND
] = "Sound completed";
1652 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1655 sys_siglist
[SIGSTP
] = "Stopped (user)";
1658 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1661 sys_siglist
[SIGTERM
] = "Terminated";
1664 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1667 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1670 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1673 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1676 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1679 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1682 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1685 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1688 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1691 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1694 sys_siglist
[SIGWINCH
] = "Window size changed";
1697 sys_siglist
[SIGWIND
] = "SIGWIND";
1700 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1703 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1706 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1715 /* Figure out how many bits the system's random number generator uses.
1716 `random' and `lrand48' are assumed to return 31 usable bits.
1717 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1718 so we'll shift it and treat it like the 15-bit USG `rand'. */
1722 # define RAND_BITS 31
1723 # else /* !HAVE_RANDOM */
1724 # ifdef HAVE_LRAND48
1725 # define RAND_BITS 31
1726 # define random lrand48
1727 # else /* !HAVE_LRAND48 */
1728 # define RAND_BITS 15
1729 # if RAND_MAX == 32767
1730 # define random rand
1731 # else /* RAND_MAX != 32767 */
1732 # if RAND_MAX == 2147483647
1733 # define random() (rand () >> 16)
1734 # else /* RAND_MAX != 2147483647 */
1736 # define random rand
1738 # define random() (rand () >> 16)
1740 # endif /* RAND_MAX != 2147483647 */
1741 # endif /* RAND_MAX != 32767 */
1742 # endif /* !HAVE_LRAND48 */
1743 # endif /* !HAVE_RANDOM */
1744 #endif /* !RAND_BITS */
1747 seed_random (long int arg
)
1750 srandom ((unsigned int)arg
);
1752 # ifdef HAVE_LRAND48
1755 srand ((unsigned int)arg
);
1761 * Build a full Emacs-sized word out of whatever we've got.
1762 * This suffices even for a 64-bit architecture with a 15-bit rand.
1767 long val
= random ();
1768 #if VALBITS > RAND_BITS
1769 val
= (val
<< RAND_BITS
) ^ random ();
1770 #if VALBITS > 2*RAND_BITS
1771 val
= (val
<< RAND_BITS
) ^ random ();
1772 #if VALBITS > 3*RAND_BITS
1773 val
= (val
<< RAND_BITS
) ^ random ();
1774 #if VALBITS > 4*RAND_BITS
1775 val
= (val
<< RAND_BITS
) ^ random ();
1776 #endif /* need at least 5 */
1777 #endif /* need at least 4 */
1778 #endif /* need at least 3 */
1779 #endif /* need at least 2 */
1780 return val
& ((1L << VALBITS
) - 1);
1783 #ifndef HAVE_STRERROR
1789 extern char *sys_errlist
[];
1790 extern int sys_nerr
;
1792 if (errnum
>= 0 && errnum
< sys_nerr
)
1793 return sys_errlist
[errnum
];
1794 return (char *) "Unknown error";
1796 #endif /* not WINDOWSNT */
1797 #endif /* ! HAVE_STRERROR */
1800 emacs_open (const char *path
, int oflag
, int mode
)
1802 register int rtnval
;
1804 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1805 && (errno
== EINTR
))
1811 emacs_close (int fd
)
1814 register int rtnval
;
1816 while ((rtnval
= close (fd
)) == -1
1817 && (errno
== EINTR
))
1820 /* If close is interrupted SunOS 4.1 may or may not have closed the
1821 file descriptor. If it did the second close will fail with
1822 errno = EBADF. That means we have succeeded. */
1823 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1830 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1832 register int rtnval
;
1834 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1835 && (errno
== EINTR
))
1841 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1843 register int rtnval
, bytes_written
;
1849 rtnval
= write (fildes
, buf
, nbyte
);
1856 /* I originally used `QUIT' but that might causes files to
1857 be truncated if you hit C-g in the middle of it. --Stef */
1858 process_pending_signals ();
1863 return (bytes_written
? bytes_written
: -1);
1868 bytes_written
+= rtnval
;
1870 return (bytes_written
);
1875 * All of the following are for USG.
1877 * On USG systems the system calls are INTERRUPTIBLE by signals
1878 * that the user program has elected to catch. Thus the system call
1879 * must be retried in these cases. To handle this without massive
1880 * changes in the source code, we remap the standard system call names
1881 * to names for our own functions in sysdep.c that do the system call
1882 * with retries. Actually, for portability reasons, it is good
1883 * programming practice, as this example shows, to limit all actual
1884 * system calls to a single occurrence in the source. Sure, this
1885 * adds an extra level of function call overhead but it is almost
1886 * always negligible. Fred Fish, Unisoft Systems Inc.
1890 * Warning, this function may not duplicate 4.2 action properly
1891 * under error conditions.
1895 /* In 4.1, param.h fails to define this. */
1896 #define MAXPATHLEN 1024
1902 getwd (char *pathname
)
1904 char *npath
, *spath
;
1905 extern char *getcwd (char *, size_t);
1907 BLOCK_INPUT
; /* getcwd uses malloc */
1908 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1914 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1915 up to first slash. Should be harmless on other systems. */
1916 while (*npath
&& *npath
!= '/')
1918 strcpy (pathname
, npath
);
1919 free (spath
); /* getcwd uses malloc */
1924 #endif /* HAVE_GETWD */
1927 * Emulate rename using unlink/link. Note that this is
1928 * only partially correct. Also, doesn't enforce restriction
1929 * that files be of same type (regular->regular, dir->dir, etc).
1935 rename (const char *from
, const char *to
)
1937 if (access (from
, 0) == 0)
1940 if (link (from
, to
) == 0)
1941 if (unlink (from
) == 0)
1950 #if defined(HPUX) && !defined(HAVE_PERROR)
1952 /* HPUX curses library references perror, but as far as we know
1953 it won't be called. Anyway this definition will do for now. */
1959 #endif /* HPUX and not HAVE_PERROR */
1964 * Emulate BSD dup2. First close newd if it already exists.
1965 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1966 * until we are, then close the unsuccessful ones.
1970 dup2 (int oldd
, int newd
)
1972 register int fd
, ret
;
1977 return fcntl (oldd
, F_DUPFD
, newd
);
1984 ret
= dup2 (old
,new);
1990 #endif /* not HAVE_DUP2 */
1993 * Gettimeofday. Simulate as much as possible. Only accurate
1994 * to nearest second. Emacs doesn't use tzp so ignore it for now.
1995 * Only needed when subprocesses are defined.
1998 #ifndef HAVE_GETTIMEOFDAY
2002 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2004 extern long time (long);
2006 tp
->tv_sec
= time ((long *)0);
2009 tzp
->tz_minuteswest
= -1;
2014 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2017 * This function will go away as soon as all the stubs fixed. (fnf)
2021 croak (char *badfunc
)
2023 printf ("%s not yet implemented\r\n", badfunc
);
2024 reset_all_sys_modes ();
2030 /* Directory routines for systems that don't have them. */
2032 #ifdef HAVE_DIRENT_H
2036 #if !defined (HAVE_CLOSEDIR)
2039 closedir (DIR *dirp
/* stream from opendir */)
2043 rtnval
= emacs_close (dirp
->dd_fd
);
2044 xfree ((char *) dirp
);
2048 #endif /* not HAVE_CLOSEDIR */
2049 #endif /* HAVE_DIRENT_H */
2053 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2056 struct timeval tv
[2];
2059 return utimes (filename
, tv
);
2060 #else /* not HAVE_UTIMES */
2062 utb
.actime
= EMACS_SECS (atime
);
2063 utb
.modtime
= EMACS_SECS (mtime
);
2064 return utime (filename
, &utb
);
2065 #endif /* not HAVE_UTIMES */
2068 /* mkdir and rmdir functions, for systems which don't have them. */
2072 * Written by Robert Rother, Mariah Corporation, August 1985.
2074 * If you want it, it's yours. All I ask in return is that if you
2075 * figure out how to do this in a Bourne Shell script you send me
2077 * sdcsvax!rmr or rmr@uscd
2079 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2080 * subroutine. 11Mar86; hoptoad!gnu
2082 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2083 * subroutine didn't return EEXIST. It does now.
2090 mkdir (char *dpath
, int dmode
)
2092 int cpid
, status
, fd
;
2093 struct stat statbuf
;
2095 if (stat (dpath
, &statbuf
) == 0)
2097 errno
= EEXIST
; /* Stat worked, so it already exists */
2101 /* If stat fails for a reason other than non-existence, return error */
2102 if (errno
!= ENOENT
)
2105 synch_process_alive
= 1;
2106 switch (cpid
= fork ())
2109 case -1: /* Error in fork */
2110 return (-1); /* Errno is set already */
2112 case 0: /* Child process */
2114 * Cheap hack to set mode of new directory. Since this
2115 * child process is going away anyway, we zap its umask.
2116 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2117 * directory. Does anybody care?
2119 status
= umask (0); /* Get current umask */
2120 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2121 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2128 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2129 _exit (-1); /* Can't exec /bin/mkdir */
2131 default: /* Parent process */
2132 wait_for_termination (cpid
);
2135 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2136 || synch_process_termsig
!= 0)
2138 errno
= EIO
; /* We don't know why, but */
2139 return -1; /* /bin/mkdir failed */
2144 #endif /* not HAVE_MKDIR */
2150 int cpid
, status
, fd
;
2151 struct stat statbuf
;
2153 if (stat (dpath
, &statbuf
) != 0)
2155 /* Stat just set errno. We don't have to */
2159 synch_process_alive
= 1;
2160 switch (cpid
= fork ())
2163 case -1: /* Error in fork */
2164 return (-1); /* Errno is set already */
2166 case 0: /* Child process */
2167 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2174 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2175 _exit (-1); /* Can't exec /bin/rmdir */
2177 default: /* Parent process */
2178 wait_for_termination (cpid
);
2181 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2182 || synch_process_termsig
!= 0)
2184 errno
= EIO
; /* We don't know why, but */
2185 return -1; /* /bin/rmdir failed */
2190 #endif /* !HAVE_RMDIR */
2195 memset (void *b
, int n
, size_t length
)
2197 unsigned char *p
= b
;
2198 while (length
-- > 0)
2202 #endif /* !HAVE_MEMSET */
2206 memcpy (void *b1
, void *b2
, size_t length
)
2208 unsigned char *p1
= b1
, *p2
= b2
;
2209 while (length
-- > 0)
2213 #endif /* !HAVE_MEMCPY */
2215 #ifndef HAVE_MEMMOVE
2217 memmove (void *b1
, void *b2
, size_t length
)
2219 unsigned char *p1
= b1
, *p2
= b2
;
2220 if (p1
< p2
|| p1
>= p2
+ length
)
2221 while (length
-- > 0)
2227 while (length
-- > 0)
2232 #endif /* !HAVE_MEMCPY */
2236 memcmp (void *b1
, void *b2
, size_t length
)
2238 unsigned char *p1
= b1
, *p2
= b2
;
2239 while (length
-- > 0)
2241 return p1
[-1] < p2
[-1] ? -1 : 1;
2244 #endif /* !HAVE_MEMCMP */
2246 #ifndef HAVE_STRSIGNAL
2248 strsignal (int code
)
2252 if (0 <= code
&& code
< NSIG
)
2254 /* Cast to suppress warning if the table has const char *. */
2255 signame
= (char *) sys_siglist
[code
];
2260 #endif /* HAVE_STRSIGNAL */
2263 /* For make-serial-process */
2265 serial_open (char *port
)
2269 fd
= emacs_open ((char*) port
,
2282 error ("Could not open %s: %s",
2283 port
, emacs_strerror (errno
));
2286 ioctl (fd
, TIOCEXCL
, (char *) 0);
2292 #if !defined (HAVE_CFMAKERAW)
2293 /* Workaround for targets which are missing cfmakeraw. */
2294 /* Pasted from man page. */
2296 cfmakeraw (struct termios
*termios_p
)
2298 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2299 termios_p
->c_oflag
&= ~OPOST
;
2300 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2301 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2302 termios_p
->c_cflag
|= CS8
;
2304 #endif /* !defined (HAVE_CFMAKERAW */
2306 #if !defined (HAVE_CFSETSPEED)
2307 /* Workaround for targets which are missing cfsetspeed. */
2309 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2311 return (cfsetispeed (termios_p
, vitesse
)
2312 + cfsetospeed (termios_p
, vitesse
));
2316 /* For serial-process-configure */
2318 serial_configure (struct Lisp_Process
*p
,
2319 Lisp_Object contact
)
2321 Lisp_Object childp2
= Qnil
;
2322 Lisp_Object tem
= Qnil
;
2323 struct termios attr
;
2325 char summary
[4] = "???"; /* This usually becomes "8N1". */
2327 childp2
= Fcopy_sequence (p
->childp
);
2329 /* Read port attributes and prepare default configuration. */
2330 err
= tcgetattr (p
->outfd
, &attr
);
2332 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2334 #if defined (CLOCAL)
2335 attr
.c_cflag
|= CLOCAL
;
2338 attr
.c_cflag
|= CREAD
;
2341 /* Configure speed. */
2342 if (!NILP (Fplist_member (contact
, QCspeed
)))
2343 tem
= Fplist_get (contact
, QCspeed
);
2345 tem
= Fplist_get (p
->childp
, QCspeed
);
2347 err
= cfsetspeed (&attr
, XINT (tem
));
2349 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2350 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2352 /* Configure bytesize. */
2353 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2354 tem
= Fplist_get (contact
, QCbytesize
);
2356 tem
= Fplist_get (p
->childp
, QCbytesize
);
2358 tem
= make_number (8);
2360 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2361 error (":bytesize must be nil (8), 7, or 8");
2362 summary
[0] = XINT (tem
) + '0';
2363 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2364 attr
.c_cflag
&= ~CSIZE
;
2365 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2367 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2368 if (XINT (tem
) != 8)
2369 error ("Bytesize cannot be changed");
2371 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2373 /* Configure parity. */
2374 if (!NILP (Fplist_member (contact
, QCparity
)))
2375 tem
= Fplist_get (contact
, QCparity
);
2377 tem
= Fplist_get (p
->childp
, QCparity
);
2378 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2379 error (":parity must be nil (no parity), `even', or `odd'");
2380 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2381 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2382 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2387 else if (EQ (tem
, Qeven
))
2390 attr
.c_cflag
|= PARENB
;
2391 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2393 else if (EQ (tem
, Qodd
))
2396 attr
.c_cflag
|= (PARENB
| PARODD
);
2397 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2400 /* Don't error on no parity, which should be set by cfmakeraw. */
2402 error ("Parity cannot be configured");
2404 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2406 /* Configure stopbits. */
2407 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2408 tem
= Fplist_get (contact
, QCstopbits
);
2410 tem
= Fplist_get (p
->childp
, QCstopbits
);
2412 tem
= make_number (1);
2414 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2415 error (":stopbits must be nil (1 stopbit), 1, or 2");
2416 summary
[2] = XINT (tem
) + '0';
2417 #if defined (CSTOPB)
2418 attr
.c_cflag
&= ~CSTOPB
;
2419 if (XINT (tem
) == 2)
2420 attr
.c_cflag
|= CSTOPB
;
2422 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2423 if (XINT (tem
) != 1)
2424 error ("Stopbits cannot be configured");
2426 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2428 /* Configure flowcontrol. */
2429 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2430 tem
= Fplist_get (contact
, QCflowcontrol
);
2432 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2433 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2434 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2435 #if defined (CRTSCTS)
2436 attr
.c_cflag
&= ~CRTSCTS
;
2438 #if defined (CNEW_RTSCTS)
2439 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2441 #if defined (IXON) && defined (IXOFF)
2442 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2446 /* Already configured. */
2448 else if (EQ (tem
, Qhw
))
2450 #if defined (CRTSCTS)
2451 attr
.c_cflag
|= CRTSCTS
;
2452 #elif defined (CNEW_RTSCTS)
2453 attr
.c_cflag
|= CNEW_RTSCTS
;
2455 error ("Hardware flowcontrol (RTS/CTS) not supported");
2458 else if (EQ (tem
, Qsw
))
2460 #if defined (IXON) && defined (IXOFF)
2461 attr
.c_iflag
|= (IXON
| IXOFF
);
2463 error ("Software flowcontrol (XON/XOFF) not supported");
2466 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2468 /* Activate configuration. */
2469 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2471 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2473 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2474 p
->childp
= childp2
;
2477 #endif /* not DOS_NT */
2479 /* System depended enumeration of and access to system processes a-la ps(1). */
2483 /* Process enumeration and access via /proc. */
2486 list_system_processes (void)
2488 Lisp_Object procdir
, match
, proclist
, next
;
2489 struct gcpro gcpro1
, gcpro2
;
2490 register Lisp_Object tail
;
2492 GCPRO2 (procdir
, match
);
2493 /* For every process on the system, there's a directory in the
2494 "/proc" pseudo-directory whose name is the numeric ID of that
2496 procdir
= build_string ("/proc");
2497 match
= build_string ("[0-9]+");
2498 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2500 /* `proclist' gives process IDs as strings. Destructively convert
2501 each string into a number. */
2502 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2505 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2509 /* directory_files_internal returns the files in reverse order; undo
2511 proclist
= Fnreverse (proclist
);
2515 /* The WINDOWSNT implementation is in w32.c.
2516 The MSDOS implementation is in dosfns.c. */
2517 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2520 list_system_processes (void)
2525 #endif /* !defined (WINDOWSNT) */
2529 time_from_jiffies (unsigned long long tval
, long hz
,
2530 time_t *sec
, unsigned *usec
)
2532 unsigned long long ullsec
;
2536 tval
-= ullsec
* hz
;
2537 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2539 *usec
= tval
* 1000000 / hz
;
2541 *usec
= tval
/ (hz
/ 1000000);
2545 ltime_from_jiffies (unsigned long long tval
, long hz
)
2550 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2552 return list3 (make_number ((sec
>> 16) & 0xffff),
2553 make_number (sec
& 0xffff),
2554 make_number (usec
));
2558 get_up_time (time_t *sec
, unsigned *usec
)
2565 fup
= fopen ("/proc/uptime", "r");
2569 double uptime
, idletime
;
2571 /* The numbers in /proc/uptime use C-locale decimal point, but
2572 we already set ourselves to the C locale (see `fixup_locale'
2574 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2577 *usec
= (uptime
- *sec
) * 1000000;
2584 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2585 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2588 procfs_ttyname (int rdev
)
2591 char name
[PATH_MAX
];
2594 fdev
= fopen ("/proc/tty/drivers", "r");
2599 unsigned long minor_beg
, minor_end
;
2600 char minor
[25]; /* 2 32-bit numbers + dash */
2603 while (!feof (fdev
) && !ferror (fdev
))
2605 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2606 && major
== MAJOR (rdev
))
2608 minor_beg
= strtoul (minor
, &endp
, 0);
2610 minor_end
= minor_beg
;
2611 else if (*endp
== '-')
2612 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2616 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2618 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2626 return build_string (name
);
2629 static unsigned long
2630 procfs_get_total_memory (void)
2633 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2636 fmem
= fopen ("/proc/meminfo", "r");
2640 unsigned long entry_value
;
2641 char entry_name
[20]; /* the longest I saw is 13+1 */
2643 while (!feof (fmem
) && !ferror (fmem
))
2645 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2646 && strcmp (entry_name
, "MemTotal:") == 0)
2648 retval
= entry_value
;
2659 system_process_attributes (Lisp_Object pid
)
2661 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2665 long clocks_per_sec
;
2667 char procbuf
[1025], *p
, *q
;
2670 const char *cmd
= NULL
;
2671 char *cmdline
= NULL
;
2672 size_t cmdsize
= 0, cmdline_size
;
2674 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2675 unsigned long long utime
, stime
, cutime
, cstime
, start
;
2676 long priority
, nice
, rss
;
2677 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2680 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2682 Lisp_Object attrs
= Qnil
;
2683 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2684 struct gcpro gcpro1
, gcpro2
;
2685 EMACS_INT uid_eint
, gid_eint
;
2687 CHECK_NUMBER_OR_FLOAT (pid
);
2688 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2689 sprintf (procfn
, "/proc/%u", proc_id
);
2690 if (stat (procfn
, &st
) < 0)
2693 GCPRO2 (attrs
, decoded_cmd
);
2697 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2699 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2701 pw
= getpwuid (uid
);
2704 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2708 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2710 gr
= getgrgid (gid
);
2713 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2715 strcpy (fn
, procfn
);
2716 procfn_end
= fn
+ strlen (fn
);
2717 strcpy (procfn_end
, "/stat");
2718 fd
= emacs_open (fn
, O_RDONLY
, 0);
2719 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2721 procbuf
[nread
] = '\0';
2724 p
= strchr (p
, '(');
2727 q
= strrchr (p
+ 1, ')');
2742 /* Command name is encoded in locale-coding-system; decode it. */
2743 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2744 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2745 Vlocale_coding_system
, 0);
2746 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2750 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2752 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2753 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2754 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2755 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2756 &utime
, &stime
, &cutime
, &cstime
,
2757 &priority
, &nice
, &thcount
, &start
, &vsize
, &rss
);
2762 state_str
[1] = '\0';
2763 tem
= build_string (state_str
);
2764 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2766 /* Stops GCC whining about limited range of data type. */
2771 thcount_eint
= thcount
;
2772 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2773 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2774 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2775 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2776 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2777 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2778 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2779 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2780 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2781 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2782 if (clocks_per_sec
< 0)
2783 clocks_per_sec
= 100;
2784 attrs
= Fcons (Fcons (Qutime
,
2785 ltime_from_jiffies (utime
, clocks_per_sec
)),
2787 attrs
= Fcons (Fcons (Qstime
,
2788 ltime_from_jiffies (stime
, clocks_per_sec
)),
2790 attrs
= Fcons (Fcons (Qtime
,
2791 ltime_from_jiffies (stime
+utime
, clocks_per_sec
)),
2793 attrs
= Fcons (Fcons (Qcutime
,
2794 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2796 attrs
= Fcons (Fcons (Qcstime
,
2797 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2799 attrs
= Fcons (Fcons (Qctime
,
2800 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2802 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2803 attrs
= Fcons (Fcons (Qnice
, make_number (nice
)), attrs
);
2804 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2805 EMACS_GET_TIME (tnow
);
2806 get_up_time (&sec
, &usec
);
2807 EMACS_SET_SECS (telapsed
, sec
);
2808 EMACS_SET_USECS (telapsed
, usec
);
2809 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2810 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2811 EMACS_SET_SECS (tstart
, sec
);
2812 EMACS_SET_USECS (tstart
, usec
);
2813 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2814 attrs
= Fcons (Fcons (Qstart
,
2816 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2818 (EMACS_SECS (tstart
) & 0xffff),
2820 (EMACS_USECS (tstart
)))),
2822 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2823 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2824 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2825 attrs
= Fcons (Fcons (Qetime
,
2827 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2829 (EMACS_SECS (telapsed
) & 0xffff),
2831 (EMACS_USECS (telapsed
)))),
2833 time_from_jiffies (utime
+ stime
, clocks_per_sec
, &sec
, &usec
);
2834 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2837 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2838 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2841 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2848 strcpy (procfn_end
, "/cmdline");
2849 fd
= emacs_open (fn
, O_RDONLY
, 0);
2852 for (cmdline_size
= 0; emacs_read (fd
, &c
, 1) == 1; cmdline_size
++)
2854 if (isspace (c
) || c
== '\\')
2855 cmdline_size
++; /* for later quoting, see below */
2859 cmdline
= xmalloc (cmdline_size
+ 1);
2860 lseek (fd
, 0L, SEEK_SET
);
2862 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2863 cmdline
[nread
++] = '\0';
2866 /* Assigning zero to `nread' makes us skip the following
2867 two loops, assign zero to cmdline_size, and enter the
2868 following `if' clause that handles unknown command
2872 /* We don't want trailing null characters. */
2873 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2875 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2877 /* Escape-quote whitespace and backslashes. */
2878 if (isspace (*p
) || *p
== '\\')
2880 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2884 else if (*p
== '\0')
2887 cmdline_size
= nread
;
2894 cmdsize
= strlen (cmd
);
2895 cmdline_size
= cmdsize
+ 2;
2896 cmdline
= xmalloc (cmdline_size
+ 1);
2897 strcpy (cmdline
, "[");
2898 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2901 /* Command line is encoded in locale-coding-system; decode it. */
2902 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2903 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2904 Vlocale_coding_system
, 0);
2906 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2913 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2915 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2916 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2917 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2918 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2919 #undef _FILE_OFFSET_BITS
2921 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2926 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2927 #define _FILE_OFFSET_BITS 64
2928 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2931 system_process_attributes (Lisp_Object pid
)
2933 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2938 struct psinfo pinfo
;
2941 int proc_id
, uid
, gid
;
2942 Lisp_Object attrs
= Qnil
;
2943 Lisp_Object decoded_cmd
, tem
;
2944 struct gcpro gcpro1
, gcpro2
;
2945 EMACS_INT uid_eint
, gid_eint
;
2947 CHECK_NUMBER_OR_FLOAT (pid
);
2948 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2949 sprintf (procfn
, "/proc/%u", proc_id
);
2950 if (stat (procfn
, &st
) < 0)
2953 GCPRO2 (attrs
, decoded_cmd
);
2957 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2959 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2961 pw
= getpwuid (uid
);
2964 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2968 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2970 gr
= getgrgid (gid
);
2973 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2975 strcpy (fn
, procfn
);
2976 procfn_end
= fn
+ strlen (fn
);
2977 strcpy (procfn_end
, "/psinfo");
2978 fd
= emacs_open (fn
, O_RDONLY
, 0);
2980 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2982 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2983 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2984 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2988 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2989 state_str
[1] = '\0';
2990 tem
= build_string (state_str
);
2991 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2994 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2995 need to get a string from it. */
2997 /* FIXME: missing: Qtpgid */
3009 Are they available? */
3011 attrs
= Fcons (Fcons (Qtime
,
3012 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3013 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3014 make_number (pinfo
.pr_time
.tv_nsec
))),
3017 attrs
= Fcons (Fcons (Qctime
,
3018 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3019 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3020 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3023 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3024 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3025 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3027 attrs
= Fcons (Fcons (Qstart
,
3028 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3029 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3030 make_number (pinfo
.pr_start
.tv_nsec
))),
3032 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3033 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3035 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3036 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3037 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3040 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3041 strlen (pinfo
.pr_fname
)),
3042 Vlocale_coding_system
, 0);
3043 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3045 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3046 strlen (pinfo
.pr_psargs
)),
3047 Vlocale_coding_system
, 0);
3048 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3058 /* The WINDOWSNT implementation is in w32.c.
3059 The MSDOS implementation is in dosfns.c. */
3060 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3063 system_process_attributes (Lisp_Object pid
)
3068 #endif /* !defined (WINDOWSNT) */