1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2011
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
28 #endif /* HAVE_PWD_H */
31 #endif /* HAVE_LIMITS_H */
34 #include <allocator.h>
35 #include <careadlinkat.h>
36 #include <ignore-value.h>
39 #include "sysselect.h"
40 #include "blockinput.h"
44 #define write sys_write
49 #endif /* not WINDOWSNT */
51 #include <sys/types.h>
58 #define setpgrp setpgid
62 /* Get SI_SRPC_DOMAIN, if it is available. */
63 #ifdef HAVE_SYS_SYSTEMINFO_H
64 #include <sys/systeminfo.h>
67 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
71 #include <sys/param.h>
80 #ifdef HAVE_SYS_UTSNAME_H
81 #include <sys/utsname.h>
83 #endif /* HAVE_SYS_UTSNAME_H */
88 #include "termhooks.h"
91 #include "dispextern.h"
93 #include "cm.h" /* for reset_sys_modes */
97 /* In process.h which conflicts with the local copy. */
99 int _cdecl
_spawnlp (int, const char *, const char *, ...);
100 int _cdecl
_getpid (void);
101 extern char *getwd (char *);
104 #include "syssignal.h"
111 #ifndef HAVE_STRUCT_UTIMBUF
112 /* We want to use utime rather than utimes, but we couldn't find the
113 structure declaration. We'll use the traditional one. */
121 /* Declare here, including term.h is problematic on some systems. */
122 extern void tputs (const char *, int, int (*)(int));
124 static const int baud_convert
[] =
126 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
127 1800, 2400, 4800, 9600, 19200, 38400
130 void croak (char *) NO_RETURN
;
132 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
134 SIGMASKTYPE sigprocmask_set
;
137 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
139 /* Return the current working directory. Returns NULL on errors.
140 Any other returned value must be freed with free. This is used
141 only when get_current_dir_name is not defined on the system. */
143 get_current_dir_name (void)
147 struct stat dotstat
, pwdstat
;
148 /* If PWD is accurate, use it instead of calling getwd. PWD is
149 sometimes a nicer name, and using it may avoid a fatal error if a
150 parent directory is searchable but not readable. */
151 if ((pwd
= getenv ("PWD")) != 0
152 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
153 && stat (pwd
, &pwdstat
) == 0
154 && stat (".", &dotstat
) == 0
155 && dotstat
.st_ino
== pwdstat
.st_ino
156 && dotstat
.st_dev
== pwdstat
.st_dev
158 && strlen (pwd
) < MAXPATHLEN
162 buf
= (char *) malloc (strlen (pwd
) + 1);
170 size_t buf_size
= 1024;
171 buf
= (char *) malloc (buf_size
);
176 if (getcwd (buf
, buf_size
) == buf
)
180 int tmp_errno
= errno
;
186 buf
= (char *) realloc (buf
, buf_size
);
194 /* We need MAXPATHLEN here. */
195 buf
= (char *) malloc (MAXPATHLEN
+ 1);
198 if (getwd (buf
) == NULL
)
200 int tmp_errno
= errno
;
212 /* Discard pending input on all input descriptors. */
215 discard_tty_input (void)
218 struct emacs_tty buf
;
223 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
224 while (dos_keyread () != -1)
226 #else /* not MSDOS */
228 struct tty_display_info
*tty
;
229 for (tty
= tty_list
; tty
; tty
= tty
->next
)
231 if (tty
->input
) /* Is the device suspended? */
233 emacs_get_tty (fileno (tty
->input
), &buf
);
234 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
238 #endif /* not MSDOS */
239 #endif /* not WINDOWSNT */
245 /* Arrange for character C to be read as the next input from
247 XXX What if we have multiple ttys?
253 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
256 /* Should perhaps error if in batch mode */
258 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
259 #else /* no TIOCSTI */
260 error ("Cannot stuff terminal input characters in this version of Unix");
261 #endif /* no TIOCSTI */
267 init_baud_rate (int fd
)
277 #else /* not DOS_NT */
282 emacs_ospeed
= cfgetospeed (&sg
);
283 #endif /* not DOS_NT */
286 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
287 ? baud_convert
[emacs_ospeed
] : 9600);
294 int wait_debugging
; /* Set nonzero to make following function work under dbx
295 (at least for bsd). */
298 /* Wait for subprocess with process id `pid' to terminate and
299 make sure it will get eliminated (not remain forever as a zombie) */
302 wait_for_termination (int pid
)
306 #if defined (BSD_SYSTEM) || defined (HPUX)
307 /* Note that kill returns -1 even if the process is just a zombie now.
308 But inevitably a SIGCHLD interrupt should be generated
309 and child_sig will do wait3 and make the process go away. */
310 /* There is some indication that there is a bug involved with
311 termination of subprocesses, perhaps involving a kernel bug too,
312 but no idea what it is. Just as a hunch we signal SIGCHLD to see
313 if that causes the problem to go away or get worse. */
314 sigsetmask (sigmask (SIGCHLD
));
315 if (0 > kill (pid
, 0))
317 sigsetmask (SIGEMPTYMASK
);
318 kill (getpid (), SIGCHLD
);
324 sigpause (SIGEMPTYMASK
);
325 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
329 #else /* not WINDOWSNT */
330 sigblock (sigmask (SIGCHLD
));
332 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
334 sigunblock (sigmask (SIGCHLD
));
338 sigsuspend (&empty_mask
);
339 #endif /* not WINDOWSNT */
340 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
345 * flush any pending output
346 * (may flush input as well; it does not matter the way we use it)
350 flush_pending_output (int channel
)
352 /* FIXME: maybe this function should be removed */
355 /* Set up the terminal at the other end of a pseudo-terminal that
356 we will be controlling an inferior through.
357 It should not echo or do line-editing, since that is done
358 in Emacs. No padding needed for insertion into an Emacs buffer. */
361 child_setup_tty (int out
)
366 emacs_get_tty (out
, &s
);
367 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
368 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
370 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
371 Some versions of GNU Hurd do not have FFDLY? */
373 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
374 /* No output delays */
376 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
377 /* No output delays */
380 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
381 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
383 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
386 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
389 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
391 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
392 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
393 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
394 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
397 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
400 #ifdef SIGNALS_VIA_CHARACTERS
401 /* the QUIT and INTR character are used in process_send_signal
402 so set them here to something useful. */
403 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
404 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
405 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
406 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
407 #endif /* not SIGNALS_VIA_CHARACTERS */
410 /* Also, PTY overloads NUL and BREAK.
411 don't ignore break, but don't signal either, so it looks like NUL. */
412 s
.main
.c_iflag
&= ~IGNBRK
;
413 s
.main
.c_iflag
&= ~BRKINT
;
414 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
415 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
416 would force it to 0377. That looks like duplicated code. */
417 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
420 /* We originally enabled ICANON (and set VEOF to 04), and then had
421 proces.c send additional EOF chars to flush the output when faced
422 with long lines, but this leads to weird effects when the
423 subprocess has disabled ICANON and ends up seeing those spurious
424 extra EOFs. So we don't send EOFs any more in
425 process.c:send_process. First we tried to disable ICANON by
426 default, so if a subsprocess sets up ICANON, it's his problem (or
427 the Elisp package that talks to it) to deal with lines that are
428 too long. But this disables some features, such as the ability
429 to send EOF signals. So we re-enabled ICANON but there is no
430 more "send eof to flush" going on (which is wrong and unportable
431 in itself). The correct way to handle too much output is to
432 buffer what could not be written and then write it again when
433 select returns ok for writing. This has it own set of
434 problems. Write is now asynchronous, is that a problem? How much
435 do we buffer, and what do we do when that limit is reached? */
437 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
438 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
439 #if 0 /* These settings only apply to non-ICANON mode. */
440 s
.main
.c_cc
[VMIN
] = 1;
441 s
.main
.c_cc
[VTIME
] = 0;
444 emacs_set_tty (out
, &s
, 0);
445 #endif /* not WINDOWSNT */
447 #endif /* not MSDOS */
450 /* Record a signal code and the handler for it. */
454 void (*handler
) (int);
457 static void save_signal_handlers (struct save_signal
*);
458 static void restore_signal_handlers (struct save_signal
*);
460 /* Suspend the Emacs process; give terminal to its superior. */
465 #if defined (SIGTSTP) && !defined (MSDOS)
468 int pgrp
= EMACS_GETPGRP (0);
469 EMACS_KILLPG (pgrp
, SIGTSTP
);
472 #else /* No SIGTSTP */
473 /* On a system where suspending is not implemented,
474 instead fork a subshell and let it talk directly to the terminal
478 #endif /* no SIGTSTP */
481 /* Fork a subshell. */
486 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
488 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
491 struct save_signal saved_handlers
[5];
493 unsigned char *volatile str_volatile
= 0;
497 saved_handlers
[0].code
= SIGINT
;
498 saved_handlers
[1].code
= SIGQUIT
;
499 saved_handlers
[2].code
= SIGTERM
;
501 saved_handlers
[3].code
= SIGIO
;
502 saved_handlers
[4].code
= 0;
504 saved_handlers
[3].code
= 0;
507 /* Mentioning current_buffer->buffer would mean including buffer.h,
508 which somehow wedges the hp compiler. So instead... */
510 dir
= intern ("default-directory");
511 if (NILP (Fboundp (dir
)))
513 dir
= Fsymbol_value (dir
);
517 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
518 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
520 memcpy (str
, SDATA (dir
), len
);
521 if (str
[len
- 1] != '/') str
[len
++] = '/';
527 save_signal_handlers (saved_handlers
);
528 synch_process_alive
= 1;
532 error ("Can't spawn subshell");
539 #ifdef DOS_NT /* MW, Aug 1993 */
542 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
545 sh
= (char *) egetenv ("SHELL");
549 /* Use our buffer's default directory for the subshell. */
551 if (str
&& chdir ((char *) str
) != 0)
554 ignore_value (write (1, "Can't chdir\n", 12));
559 close_process_descs (); /* Close Emacs's pipes/ptys */
561 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
563 char *epwd
= getenv ("PWD");
564 char old_pwd
[MAXPATHLEN
+1+4];
566 /* If PWD is set, pass it with corrected value. */
569 strcpy (old_pwd
, epwd
);
570 if (str
[len
- 1] == '/')
572 setenv ("PWD", str
, 1);
575 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
577 putenv (old_pwd
); /* restore previous value */
579 #else /* not MSDOS */
581 /* Waits for process completion */
582 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
583 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
585 write (1, "Can't execute subshell", 22);
586 #else /* not WINDOWSNT */
587 execlp (sh
, sh
, (char *) 0);
588 ignore_value (write (1, "Can't execute subshell", 22));
590 #endif /* not WINDOWSNT */
591 #endif /* not MSDOS */
594 /* Do this now if we did not do it before. */
596 save_signal_handlers (saved_handlers
);
597 synch_process_alive
= 1;
601 wait_for_termination (pid
);
603 restore_signal_handlers (saved_handlers
);
604 synch_process_alive
= 0;
608 save_signal_handlers (struct save_signal
*saved_handlers
)
610 while (saved_handlers
->code
)
612 saved_handlers
->handler
613 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
619 restore_signal_handlers (struct save_signal
*saved_handlers
)
621 while (saved_handlers
->code
)
623 signal (saved_handlers
->code
, saved_handlers
->handler
);
629 /* If SIGIO is broken, don't do anything. */
646 unrequest_sigio (void)
653 int old_fcntl_flags
[MAXDESC
];
659 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
660 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
662 interrupts_deferred
= 0;
669 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
673 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
674 /* XXX Uhm, FASYNC is not used anymore here. */
675 /* XXX Yeah, but you need it for SIGIO, don't you? */
684 sigunblock (sigmask (SIGWINCH
));
686 sigunblock (sigmask (SIGIO
));
688 interrupts_deferred
= 0;
692 unrequest_sigio (void)
697 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
703 sigblock (sigmask (SIGWINCH
));
705 sigblock (sigmask (SIGIO
));
706 interrupts_deferred
= 1;
709 #else /* no FASYNC */
715 if (noninteractive
|| read_socket_hook
)
718 croak ("request_sigio");
722 unrequest_sigio (void)
724 if (noninteractive
|| read_socket_hook
)
727 croak ("unrequest_sigio");
736 /* Getting and setting emacs_tty structures. */
738 /* Set *TC to the parameters associated with the terminal FD.
739 Return zero if all's well, or -1 if we ran into an error we
740 couldn't deal with. */
742 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
744 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
746 /* We have those nifty POSIX tcmumbleattr functions. */
747 memset (&settings
->main
, 0, sizeof (settings
->main
));
748 if (tcgetattr (fd
, &settings
->main
) < 0)
752 /* We have survived the tempest. */
757 /* Set the parameters of the tty on FD according to the contents of
758 *SETTINGS. If FLUSHP is non-zero, we discard input.
759 Return 0 if all went well, and -1 if anything failed. */
762 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
764 /* Set the primary parameters - baud rate, character size, etcetera. */
767 /* We have those nifty POSIX tcmumbleattr functions.
768 William J. Smith <wjs@wiis.wang.com> writes:
769 "POSIX 1003.1 defines tcsetattr to return success if it was
770 able to perform any of the requested actions, even if some
771 of the requested actions could not be performed.
772 We must read settings back to ensure tty setup properly.
773 AIX requires this to keep tty from hanging occasionally." */
774 /* This make sure that we don't loop indefinitely in here. */
775 for (i
= 0 ; i
< 10 ; i
++)
776 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
787 memset (&new, 0, sizeof (new));
788 /* Get the current settings, and see if they're what we asked for. */
789 tcgetattr (fd
, &new);
790 /* We cannot use memcmp on the whole structure here because under
791 * aix386 the termios structure has some reserved field that may
794 if ( new.c_iflag
== settings
->main
.c_iflag
795 && new.c_oflag
== settings
->main
.c_oflag
796 && new.c_cflag
== settings
->main
.c_cflag
797 && new.c_lflag
== settings
->main
.c_lflag
798 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
805 /* We have survived the tempest. */
812 int old_fcntl_owner
[MAXDESC
];
813 #endif /* F_SETOWN */
815 /* This may also be defined in stdio,
816 but if so, this does no harm,
817 and using the same name avoids wasting the other one's space. */
820 unsigned char _sobuf
[BUFSIZ
+8];
825 /* Initialize the terminal mode on all tty devices that are currently
829 init_all_sys_modes (void)
831 struct tty_display_info
*tty
;
832 for (tty
= tty_list
; tty
; tty
= tty
->next
)
833 init_sys_modes (tty
);
836 /* Initialize the terminal mode on the given tty device. */
839 init_sys_modes (struct tty_display_info
*tty_out
)
841 struct emacs_tty tty
;
843 Vtty_erase_char
= Qnil
;
848 if (!tty_out
->output
)
849 return; /* The tty is suspended. */
851 if (! tty_out
->old_tty
)
852 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
854 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
856 tty
= *tty_out
->old_tty
;
858 #if !defined (DOS_NT)
859 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
861 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
862 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
863 #ifdef INLCR /* I'm just being cautious,
864 since I can't check how widespread INLCR is--rms. */
865 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
868 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
870 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
871 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
873 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
875 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
876 if (tty_out
->flow_control
)
878 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
880 tty
.main
.c_iflag
&= ~IXANY
;
884 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
885 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
887 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
889 if (tty_out
->meta_key
)
891 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
892 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
895 if (tty_out
->input
== stdin
)
897 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
898 /* Set up C-g for both SIGQUIT and SIGINT.
899 We don't know which we will get, but we handle both alike
900 so which one it really gives us does not matter. */
901 tty
.main
.c_cc
[VQUIT
] = quit_char
;
905 /* We normally don't get interrupt or quit signals from tty
906 devices other than our controlling terminal; therefore,
907 we must handle C-g as normal input. Unfortunately, this
908 means that the interrupt and quit feature must be
909 disabled on secondary ttys, or we would not even see the
912 Note that even though emacsclient could have special code
913 to pass SIGINT to Emacs, we should _not_ enable
914 interrupt/quit keys for emacsclient frames. This means
915 that we can't break out of loops in C code from a
916 secondary tty frame, but we can always decide what
917 display the C-g came from, which is more important from a
918 usability point of view. (Consider the case when two
919 people work together using the same Emacs instance.) */
920 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
921 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
923 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
924 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
926 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
931 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
934 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
936 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
937 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
940 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
943 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
944 #endif /* VREPRINT */
946 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
949 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
950 #endif /* VDISCARD */
952 if (tty_out
->flow_control
)
955 tty
.main
.c_cc
[VSTART
] = '\021';
958 tty
.main
.c_cc
[VSTOP
] = '\023';
964 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
967 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
972 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
973 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
974 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
975 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
976 if (tty_out
->flow_control
)
979 tty
.main
.c_cc
[VSTART
] = '\021';
982 tty
.main
.c_cc
[VSTOP
] = '\023';
985 /* Also, PTY overloads NUL and BREAK.
986 don't ignore break, but don't signal either, so it looks like NUL.
987 This really serves a purpose only if running in an XTERM window
988 or via TELNET or the like, but does no harm elsewhere. */
989 tty
.main
.c_iflag
&= ~IGNBRK
;
990 tty
.main
.c_iflag
&= ~BRKINT
;
992 #endif /* not DOS_NT */
994 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
995 if (!tty_out
->term_initted
)
996 internal_terminal_init ();
1000 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1002 /* This code added to insure that, if flow-control is not to be used,
1003 we have an unlocked terminal at the start. */
1006 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1009 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1012 #if !defined (DOS_NT)
1014 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1019 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1020 if (interrupt_input
)
1022 old_fcntl_owner
[fileno (tty_out
->input
)] =
1023 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1024 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1025 init_sigio (fileno (tty_out
->input
));
1027 if (gpm_tty
== tty_out
)
1029 /* Arrange for mouse events to give us SIGIO signals. */
1030 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1031 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1032 init_sigio (gpm_fd
);
1034 #endif /* HAVE_GPM */
1036 #endif /* F_GETOWN */
1037 #endif /* F_SETFL */
1040 /* This symbol is defined on recent USG systems.
1041 Someone says without this call USG won't really buffer the file
1042 even with a call to setbuf. */
1043 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1045 setbuf (tty_out
->output
, (char *) _sobuf
);
1048 if (tty_out
->terminal
->set_terminal_modes_hook
)
1049 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1051 if (!tty_out
->term_initted
)
1053 Lisp_Object tail
, frame
;
1054 FOR_EACH_FRAME (tail
, frame
)
1056 /* XXX This needs to be revised. */
1057 if (FRAME_TERMCAP_P (XFRAME (frame
))
1058 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1059 init_frame_faces (XFRAME (frame
));
1063 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1065 /* We used to call "direct_output_forward_char(0)" here,
1066 but it's not clear why, since it may not do anything anyway. */
1070 Lisp_Object tail
, frame
;
1072 FOR_EACH_FRAME (tail
, frame
)
1074 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1075 || FRAME_MSDOS_P (XFRAME (frame
)))
1076 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1077 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1081 tty_out
->term_initted
= 1;
1084 /* Return nonzero if safe to use tabs in output.
1085 At the time this is called, init_sys_modes has not been done yet. */
1088 tabs_safe_p (int fd
)
1090 struct emacs_tty etty
;
1092 emacs_get_tty (fd
, &etty
);
1095 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1096 #else /* not TABDLY */
1098 #endif /* not TABDLY */
1104 /* Get terminal size from system.
1105 Store number of lines into *HEIGHTP and width into *WIDTHP.
1106 We store 0 if there's no valid information. */
1109 get_tty_size (int fd
, int *widthp
, int *heightp
)
1115 struct winsize size
;
1117 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1118 *widthp
= *heightp
= 0;
1121 *widthp
= size
.ws_col
;
1122 *heightp
= size
.ws_row
;
1128 /* SunOS - style. */
1129 struct ttysize size
;
1131 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1132 *widthp
= *heightp
= 0;
1135 *widthp
= size
.ts_cols
;
1136 *heightp
= size
.ts_lines
;
1141 *widthp
= ScreenCols ();
1142 *heightp
= ScreenRows ();
1143 #else /* system doesn't know size */
1147 #endif /* not SunOS-style */
1148 #endif /* not BSD-style */
1151 /* Set the logical window size associated with descriptor FD
1152 to HEIGHT and WIDTH. This is used mainly with ptys. */
1155 set_window_size (int fd
, int height
, int width
)
1160 struct winsize size
;
1161 size
.ws_row
= height
;
1162 size
.ws_col
= width
;
1164 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1165 return 0; /* error */
1172 /* SunOS - style. */
1173 struct ttysize size
;
1174 size
.ts_lines
= height
;
1175 size
.ts_cols
= width
;
1177 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1183 #endif /* not SunOS-style */
1184 #endif /* not BSD-style */
1189 /* Prepare all terminal devices for exiting Emacs. */
1192 reset_all_sys_modes (void)
1194 struct tty_display_info
*tty
;
1195 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1196 reset_sys_modes (tty
);
1199 /* Prepare the terminal for closing it; move the cursor to the
1200 bottom of the frame, turn off interrupt-driven I/O, etc. */
1203 reset_sys_modes (struct tty_display_info
*tty_out
)
1210 if (!tty_out
->term_initted
)
1213 if (!tty_out
->output
)
1214 return; /* The tty is suspended. */
1216 /* Go to and clear the last line of the terminal. */
1218 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1220 /* Code adapted from tty_clear_end_of_line. */
1221 if (tty_out
->TS_clr_line
)
1223 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1226 { /* have to do it the hard way */
1228 tty_turn_off_insert (tty_out
);
1230 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1232 fputc (' ', tty_out
->output
);
1236 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1237 fflush (tty_out
->output
);
1239 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1240 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1243 /* Avoid possible loss of output when changing terminal modes. */
1244 fsync (fileno (tty_out
->output
));
1248 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1249 if (interrupt_input
)
1251 reset_sigio (fileno (tty_out
->input
));
1252 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1253 old_fcntl_owner
[fileno (tty_out
->input
)]);
1255 #endif /* F_SETOWN */
1257 fcntl (fileno (tty_out
->input
), F_SETFL
,
1258 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1260 #endif /* F_SETFL */
1262 if (tty_out
->old_tty
)
1263 while (emacs_set_tty (fileno (tty_out
->input
),
1264 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1267 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1275 /* Set up the proper status flags for use of a pty. */
1280 /* I'm told that TOICREMOTE does not mean control chars
1281 "can't be sent" but rather that they don't have
1282 input-editing or signaling effects.
1283 That should be good, because we have other ways
1284 to do those things in Emacs.
1285 However, telnet mode seems not to work on 4.2.
1286 So TIOCREMOTE is turned off now. */
1288 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1289 will hang. In particular, the "timeout" feature (which
1290 causes a read to return if there is no data available)
1291 does this. Also it is known that telnet mode will hang
1292 in such a way that Emacs must be stopped (perhaps this
1293 is the same problem).
1295 If TIOCREMOTE is turned off, then there is a bug in
1296 hp-ux which sometimes loses data. Apparently the
1297 code which blocks the master process when the internal
1298 buffer fills up does not work. Other than this,
1299 though, everything else seems to work fine.
1301 Since the latter lossage is more benign, we may as well
1302 lose that way. -- cph */
1304 #if defined(UNIX98_PTYS)
1307 ioctl (fd
, FIONBIO
, &on
);
1312 #endif /* HAVE_PTYS */
1315 #include <sys/socket.h>
1317 #endif /* HAVE_SOCKETS */
1320 #ifndef HAVE_H_ERRNO
1323 #endif /* TRY_AGAIN */
1326 init_system_name (void)
1328 #ifndef HAVE_GETHOSTNAME
1331 Vsystem_name
= build_string (uts
.nodename
);
1332 #else /* HAVE_GETHOSTNAME */
1333 unsigned int hostname_size
= 256;
1334 char *hostname
= (char *) alloca (hostname_size
);
1336 /* Try to get the host name; if the buffer is too short, try
1337 again. Apparently, the only indication gethostname gives of
1338 whether the buffer was large enough is the presence or absence
1339 of a '\0' in the string. Eech. */
1342 gethostname (hostname
, hostname_size
- 1);
1343 hostname
[hostname_size
- 1] = '\0';
1345 /* Was the buffer large enough for the '\0'? */
1346 if (strlen (hostname
) < hostname_size
- 1)
1349 hostname_size
<<= 1;
1350 hostname
= (char *) alloca (hostname_size
);
1353 /* Turn the hostname into the official, fully-qualified hostname.
1354 Don't do this if we're going to dump; this can confuse system
1355 libraries on some machines and make the dumped emacs core dump. */
1358 #endif /* not CANNOT_DUMP */
1359 if (! strchr (hostname
, '.'))
1362 #ifdef HAVE_GETADDRINFO
1363 struct addrinfo
*res
;
1364 struct addrinfo hints
;
1367 memset (&hints
, 0, sizeof (hints
));
1368 hints
.ai_socktype
= SOCK_STREAM
;
1369 hints
.ai_flags
= AI_CANONNAME
;
1371 for (count
= 0;; count
++)
1373 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1374 || ret
!= EAI_AGAIN
)
1379 Fsleep_for (make_number (1), Qnil
);
1384 struct addrinfo
*it
= res
;
1387 char *fqdn
= it
->ai_canonname
;
1388 if (fqdn
&& strchr (fqdn
, '.')
1389 && strcmp (fqdn
, "localhost.localdomain") != 0)
1395 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1396 strcpy (hostname
, it
->ai_canonname
);
1400 #else /* !HAVE_GETADDRINFO */
1402 for (count
= 0;; count
++)
1408 hp
= gethostbyname (hostname
);
1410 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1417 Fsleep_for (make_number (1), Qnil
);
1422 char *fqdn
= (char *) hp
->h_name
;
1424 if (!strchr (fqdn
, '.'))
1426 /* We still don't have a fully qualified domain name.
1427 Try to find one in the list of alternate names */
1428 char **alias
= hp
->h_aliases
;
1430 && (!strchr (*alias
, '.')
1431 || !strcmp (*alias
, "localhost.localdomain")))
1438 #endif /* !HAVE_GETADDRINFO */
1440 #endif /* HAVE_SOCKETS */
1441 Vsystem_name
= build_string (hostname
);
1442 #endif /* HAVE_GETHOSTNAME */
1445 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1446 if (*p
== ' ' || *p
== '\t')
1451 /* POSIX signals support - DJB */
1452 /* Anyone with POSIX signals should have ANSI C declarations */
1454 sigset_t empty_mask
, full_mask
;
1459 sys_signal (int signal_number
, signal_handler_t action
)
1461 struct sigaction new_action
, old_action
;
1462 sigemptyset (&new_action
.sa_mask
);
1463 new_action
.sa_handler
= action
;
1464 new_action
.sa_flags
= 0;
1465 #if defined (SA_RESTART)
1466 /* Emacs mostly works better with restartable system services. If this
1467 flag exists, we probably want to turn it on here.
1468 However, on some systems this resets the timeout of `select'
1469 which means that `select' never finishes if it keeps getting signals.
1470 BROKEN_SA_RESTART is defined on those systems. */
1471 /* It's not clear why the comment above says "mostly works better". --Stef
1472 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1473 for pending input so we need long-running syscalls to be interrupted
1474 after a signal that sets the interrupt_input_pending flag. */
1475 /* Non-interactive keyboard input goes through stdio, where we always
1476 want restartable system calls. */
1477 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1480 new_action
.sa_flags
= SA_RESTART
;
1482 sigaction (signal_number
, &new_action
, &old_action
);
1483 return (old_action
.sa_handler
);
1486 #endif /* WINDOWSNT */
1489 /* If we're compiling with GCC, we don't need this function, since it
1490 can be written as a macro. */
1492 sys_sigmask (int sig
)
1495 sigemptyset (&mask
);
1496 sigaddset (&mask
, sig
);
1501 /* I'd like to have these guys return pointers to the mask storage in here,
1502 but there'd be trouble if the code was saving multiple masks. I'll be
1503 safe and pass the structure. It normally won't be more than 2 bytes
1507 sys_sigblock (sigset_t new_mask
)
1510 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1515 sys_sigunblock (sigset_t new_mask
)
1518 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1523 sys_sigsetmask (sigset_t new_mask
)
1526 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1531 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1532 static char *my_sys_siglist
[NSIG
];
1536 # define sys_siglist my_sys_siglist
1542 sigemptyset (&empty_mask
);
1543 sigfillset (&full_mask
);
1545 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1549 sys_siglist
[SIGABRT
] = "Aborted";
1552 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1555 sys_siglist
[SIGALRM
] = "Alarm clock";
1558 sys_siglist
[SIGBUS
] = "Bus error";
1561 sys_siglist
[SIGCLD
] = "Child status changed";
1564 sys_siglist
[SIGCHLD
] = "Child status changed";
1567 sys_siglist
[SIGCONT
] = "Continued";
1570 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1573 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1576 sys_siglist
[SIGEMT
] = "Emulation trap";
1579 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1582 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1585 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1588 sys_siglist
[SIGHUP
] = "Hangup";
1591 sys_siglist
[SIGILL
] = "Illegal instruction";
1594 sys_siglist
[SIGINT
] = "Interrupt";
1597 sys_siglist
[SIGIO
] = "I/O possible";
1600 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1603 sys_siglist
[SIGIOT
] = "IOT trap";
1606 sys_siglist
[SIGKILL
] = "Killed";
1609 sys_siglist
[SIGLOST
] = "Resource lost";
1612 sys_siglist
[SIGLWP
] = "SIGLWP";
1615 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1618 sys_siglist
[SIGWIND
] = "SIGPHONE";
1621 sys_siglist
[SIGPIPE
] = "Broken pipe";
1624 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1627 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1630 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1633 sys_siglist
[SIGPWR
] = "Power-fail restart";
1636 sys_siglist
[SIGQUIT
] = "Quit";
1639 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1642 sys_siglist
[SIGSAK
] = "Secure attention";
1645 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1648 sys_siglist
[SIGSOUND
] = "Sound completed";
1651 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1654 sys_siglist
[SIGSTP
] = "Stopped (user)";
1657 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1660 sys_siglist
[SIGTERM
] = "Terminated";
1663 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1666 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1669 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1672 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1675 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1678 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1681 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1684 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1687 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1690 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1693 sys_siglist
[SIGWINCH
] = "Window size changed";
1696 sys_siglist
[SIGWIND
] = "SIGWIND";
1699 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1702 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1705 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1714 /* Figure out how many bits the system's random number generator uses.
1715 `random' and `lrand48' are assumed to return 31 usable bits.
1716 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1717 so we'll shift it and treat it like the 15-bit USG `rand'. */
1721 # define RAND_BITS 31
1722 # else /* !HAVE_RANDOM */
1723 # ifdef HAVE_LRAND48
1724 # define RAND_BITS 31
1725 # define random lrand48
1726 # else /* !HAVE_LRAND48 */
1727 # define RAND_BITS 15
1728 # if RAND_MAX == 32767
1729 # define random rand
1730 # else /* RAND_MAX != 32767 */
1731 # if RAND_MAX == 2147483647
1732 # define random() (rand () >> 16)
1733 # else /* RAND_MAX != 2147483647 */
1735 # define random rand
1737 # define random() (rand () >> 16)
1739 # endif /* RAND_MAX != 2147483647 */
1740 # endif /* RAND_MAX != 32767 */
1741 # endif /* !HAVE_LRAND48 */
1742 # endif /* !HAVE_RANDOM */
1743 #endif /* !RAND_BITS */
1746 seed_random (long int arg
)
1749 srandom ((unsigned int)arg
);
1751 # ifdef HAVE_LRAND48
1754 srand ((unsigned int)arg
);
1760 * Build a full Emacs-sized word out of whatever we've got.
1761 * This suffices even for a 64-bit architecture with a 15-bit rand.
1766 long val
= random ();
1767 #if VALBITS > RAND_BITS
1768 val
= (val
<< RAND_BITS
) ^ random ();
1769 #if VALBITS > 2*RAND_BITS
1770 val
= (val
<< RAND_BITS
) ^ random ();
1771 #if VALBITS > 3*RAND_BITS
1772 val
= (val
<< RAND_BITS
) ^ random ();
1773 #if VALBITS > 4*RAND_BITS
1774 val
= (val
<< RAND_BITS
) ^ random ();
1775 #endif /* need at least 5 */
1776 #endif /* need at least 4 */
1777 #endif /* need at least 3 */
1778 #endif /* need at least 2 */
1779 return val
& ((1L << VALBITS
) - 1);
1782 #ifndef HAVE_STRERROR
1788 extern char *sys_errlist
[];
1789 extern int sys_nerr
;
1791 if (errnum
>= 0 && errnum
< sys_nerr
)
1792 return sys_errlist
[errnum
];
1793 return (char *) "Unknown error";
1795 #endif /* not WINDOWSNT */
1796 #endif /* ! HAVE_STRERROR */
1799 emacs_open (const char *path
, int oflag
, int mode
)
1801 register int rtnval
;
1803 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1804 && (errno
== EINTR
))
1810 emacs_close (int fd
)
1813 register int rtnval
;
1815 while ((rtnval
= close (fd
)) == -1
1816 && (errno
== EINTR
))
1819 /* If close is interrupted SunOS 4.1 may or may not have closed the
1820 file descriptor. If it did the second close will fail with
1821 errno = EBADF. That means we have succeeded. */
1822 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1829 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1831 register int rtnval
;
1833 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1834 && (errno
== EINTR
))
1840 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1842 register int rtnval
, bytes_written
;
1848 rtnval
= write (fildes
, buf
, nbyte
);
1855 /* I originally used `QUIT' but that might causes files to
1856 be truncated if you hit C-g in the middle of it. --Stef */
1857 process_pending_signals ();
1862 return (bytes_written
? bytes_written
: -1);
1867 bytes_written
+= rtnval
;
1869 return (bytes_written
);
1872 static struct allocator
const emacs_norealloc_allocator
=
1873 { xmalloc
, NULL
, xfree
, memory_full
};
1875 /* Get the symbolic link value of FILENAME. Return a pointer to a
1876 NUL-terminated string. If readlink fails, return NULL and set
1877 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1878 Otherwise, allocate memory and return a pointer to that memory. If
1879 memory allocation fails, diagnose and fail without returning. If
1880 successful, store the length of the symbolic link into *LINKLEN. */
1882 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1884 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1885 &emacs_norealloc_allocator
, careadlinkatcwd
);
1890 * All of the following are for USG.
1892 * On USG systems the system calls are INTERRUPTIBLE by signals
1893 * that the user program has elected to catch. Thus the system call
1894 * must be retried in these cases. To handle this without massive
1895 * changes in the source code, we remap the standard system call names
1896 * to names for our own functions in sysdep.c that do the system call
1897 * with retries. Actually, for portability reasons, it is good
1898 * programming practice, as this example shows, to limit all actual
1899 * system calls to a single occurrence in the source. Sure, this
1900 * adds an extra level of function call overhead but it is almost
1901 * always negligible. Fred Fish, Unisoft Systems Inc.
1905 * Warning, this function may not duplicate 4.2 action properly
1906 * under error conditions.
1912 /* In 4.1, param.h fails to define this. */
1913 #define MAXPATHLEN 1024
1917 getwd (char *pathname
)
1919 char *npath
, *spath
;
1920 extern char *getcwd (char *, size_t);
1922 BLOCK_INPUT
; /* getcwd uses malloc */
1923 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1929 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1930 up to first slash. Should be harmless on other systems. */
1931 while (*npath
&& *npath
!= '/')
1933 strcpy (pathname
, npath
);
1934 free (spath
); /* getcwd uses malloc */
1939 #endif /* HAVE_GETWD */
1942 * Emulate rename using unlink/link. Note that this is
1943 * only partially correct. Also, doesn't enforce restriction
1944 * that files be of same type (regular->regular, dir->dir, etc).
1950 rename (const char *from
, const char *to
)
1952 if (access (from
, 0) == 0)
1955 if (link (from
, to
) == 0)
1956 if (unlink (from
) == 0)
1965 #if defined(HPUX) && !defined(HAVE_PERROR)
1967 /* HPUX curses library references perror, but as far as we know
1968 it won't be called. Anyway this definition will do for now. */
1974 #endif /* HPUX and not HAVE_PERROR */
1979 * Emulate BSD dup2. First close newd if it already exists.
1980 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1981 * until we are, then close the unsuccessful ones.
1985 dup2 (int oldd
, int newd
)
1987 register int fd
, ret
;
1992 return fcntl (oldd
, F_DUPFD
, newd
);
1999 ret
= dup2 (old
,new);
2005 #endif /* not HAVE_DUP2 */
2008 * Gettimeofday. Simulate as much as possible. Only accurate
2009 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2010 * Only needed when subprocesses are defined.
2013 #ifndef HAVE_GETTIMEOFDAY
2017 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2019 extern long time (long);
2021 tp
->tv_sec
= time ((long *)0);
2024 tzp
->tz_minuteswest
= -1;
2029 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2032 * This function will go away as soon as all the stubs fixed. (fnf)
2036 croak (char *badfunc
)
2038 printf ("%s not yet implemented\r\n", badfunc
);
2039 reset_all_sys_modes ();
2045 /* Directory routines for systems that don't have them. */
2047 #ifdef HAVE_DIRENT_H
2051 #if !defined (HAVE_CLOSEDIR)
2054 closedir (DIR *dirp
/* stream from opendir */)
2058 rtnval
= emacs_close (dirp
->dd_fd
);
2059 xfree ((char *) dirp
);
2063 #endif /* not HAVE_CLOSEDIR */
2064 #endif /* HAVE_DIRENT_H */
2068 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2071 struct timeval tv
[2];
2074 return utimes (filename
, tv
);
2075 #else /* not HAVE_UTIMES */
2077 utb
.actime
= EMACS_SECS (atime
);
2078 utb
.modtime
= EMACS_SECS (mtime
);
2079 return utime (filename
, &utb
);
2080 #endif /* not HAVE_UTIMES */
2083 /* mkdir and rmdir functions, for systems which don't have them. */
2087 * Written by Robert Rother, Mariah Corporation, August 1985.
2089 * If you want it, it's yours. All I ask in return is that if you
2090 * figure out how to do this in a Bourne Shell script you send me
2092 * sdcsvax!rmr or rmr@uscd
2094 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2095 * subroutine. 11Mar86; hoptoad!gnu
2097 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2098 * subroutine didn't return EEXIST. It does now.
2105 mkdir (char *dpath
, int dmode
)
2107 int cpid
, status
, fd
;
2108 struct stat statbuf
;
2110 if (stat (dpath
, &statbuf
) == 0)
2112 errno
= EEXIST
; /* Stat worked, so it already exists */
2116 /* If stat fails for a reason other than non-existence, return error */
2117 if (errno
!= ENOENT
)
2120 synch_process_alive
= 1;
2121 switch (cpid
= fork ())
2124 case -1: /* Error in fork */
2125 return (-1); /* Errno is set already */
2127 case 0: /* Child process */
2129 * Cheap hack to set mode of new directory. Since this
2130 * child process is going away anyway, we zap its umask.
2131 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2132 * directory. Does anybody care?
2134 status
= umask (0); /* Get current umask */
2135 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2136 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2143 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2144 _exit (-1); /* Can't exec /bin/mkdir */
2146 default: /* Parent process */
2147 wait_for_termination (cpid
);
2150 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2151 || synch_process_termsig
!= 0)
2153 errno
= EIO
; /* We don't know why, but */
2154 return -1; /* /bin/mkdir failed */
2159 #endif /* not HAVE_MKDIR */
2165 int cpid
, status
, fd
;
2166 struct stat statbuf
;
2168 if (stat (dpath
, &statbuf
) != 0)
2170 /* Stat just set errno. We don't have to */
2174 synch_process_alive
= 1;
2175 switch (cpid
= fork ())
2178 case -1: /* Error in fork */
2179 return (-1); /* Errno is set already */
2181 case 0: /* Child process */
2182 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2189 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2190 _exit (-1); /* Can't exec /bin/rmdir */
2192 default: /* Parent process */
2193 wait_for_termination (cpid
);
2196 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2197 || synch_process_termsig
!= 0)
2199 errno
= EIO
; /* We don't know why, but */
2200 return -1; /* /bin/rmdir failed */
2205 #endif /* !HAVE_RMDIR */
2210 memset (void *b
, int n
, size_t length
)
2212 unsigned char *p
= b
;
2213 while (length
-- > 0)
2217 #endif /* !HAVE_MEMSET */
2221 memcpy (void *b1
, void *b2
, size_t length
)
2223 unsigned char *p1
= b1
, *p2
= b2
;
2224 while (length
-- > 0)
2228 #endif /* !HAVE_MEMCPY */
2230 #ifndef HAVE_MEMMOVE
2232 memmove (void *b1
, void *b2
, size_t length
)
2234 unsigned char *p1
= b1
, *p2
= b2
;
2235 if (p1
< p2
|| p1
>= p2
+ length
)
2236 while (length
-- > 0)
2242 while (length
-- > 0)
2247 #endif /* !HAVE_MEMCPY */
2251 memcmp (void *b1
, void *b2
, size_t length
)
2253 unsigned char *p1
= b1
, *p2
= b2
;
2254 while (length
-- > 0)
2256 return p1
[-1] < p2
[-1] ? -1 : 1;
2259 #endif /* !HAVE_MEMCMP */
2261 #ifndef HAVE_STRSIGNAL
2263 strsignal (int code
)
2267 if (0 <= code
&& code
< NSIG
)
2269 /* Cast to suppress warning if the table has const char *. */
2270 signame
= (char *) sys_siglist
[code
];
2275 #endif /* HAVE_STRSIGNAL */
2278 /* For make-serial-process */
2280 serial_open (char *port
)
2284 fd
= emacs_open ((char*) port
,
2297 error ("Could not open %s: %s",
2298 port
, emacs_strerror (errno
));
2301 ioctl (fd
, TIOCEXCL
, (char *) 0);
2307 #if !defined (HAVE_CFMAKERAW)
2308 /* Workaround for targets which are missing cfmakeraw. */
2309 /* Pasted from man page. */
2311 cfmakeraw (struct termios
*termios_p
)
2313 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2314 termios_p
->c_oflag
&= ~OPOST
;
2315 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2316 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2317 termios_p
->c_cflag
|= CS8
;
2319 #endif /* !defined (HAVE_CFMAKERAW */
2321 #if !defined (HAVE_CFSETSPEED)
2322 /* Workaround for targets which are missing cfsetspeed. */
2324 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2326 return (cfsetispeed (termios_p
, vitesse
)
2327 + cfsetospeed (termios_p
, vitesse
));
2331 /* For serial-process-configure */
2333 serial_configure (struct Lisp_Process
*p
,
2334 Lisp_Object contact
)
2336 Lisp_Object childp2
= Qnil
;
2337 Lisp_Object tem
= Qnil
;
2338 struct termios attr
;
2340 char summary
[4] = "???"; /* This usually becomes "8N1". */
2342 childp2
= Fcopy_sequence (p
->childp
);
2344 /* Read port attributes and prepare default configuration. */
2345 err
= tcgetattr (p
->outfd
, &attr
);
2347 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2349 #if defined (CLOCAL)
2350 attr
.c_cflag
|= CLOCAL
;
2353 attr
.c_cflag
|= CREAD
;
2356 /* Configure speed. */
2357 if (!NILP (Fplist_member (contact
, QCspeed
)))
2358 tem
= Fplist_get (contact
, QCspeed
);
2360 tem
= Fplist_get (p
->childp
, QCspeed
);
2362 err
= cfsetspeed (&attr
, XINT (tem
));
2364 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2365 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2367 /* Configure bytesize. */
2368 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2369 tem
= Fplist_get (contact
, QCbytesize
);
2371 tem
= Fplist_get (p
->childp
, QCbytesize
);
2373 tem
= make_number (8);
2375 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2376 error (":bytesize must be nil (8), 7, or 8");
2377 summary
[0] = XINT (tem
) + '0';
2378 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2379 attr
.c_cflag
&= ~CSIZE
;
2380 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2382 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2383 if (XINT (tem
) != 8)
2384 error ("Bytesize cannot be changed");
2386 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2388 /* Configure parity. */
2389 if (!NILP (Fplist_member (contact
, QCparity
)))
2390 tem
= Fplist_get (contact
, QCparity
);
2392 tem
= Fplist_get (p
->childp
, QCparity
);
2393 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2394 error (":parity must be nil (no parity), `even', or `odd'");
2395 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2396 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2397 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2402 else if (EQ (tem
, Qeven
))
2405 attr
.c_cflag
|= PARENB
;
2406 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2408 else if (EQ (tem
, Qodd
))
2411 attr
.c_cflag
|= (PARENB
| PARODD
);
2412 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2415 /* Don't error on no parity, which should be set by cfmakeraw. */
2417 error ("Parity cannot be configured");
2419 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2421 /* Configure stopbits. */
2422 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2423 tem
= Fplist_get (contact
, QCstopbits
);
2425 tem
= Fplist_get (p
->childp
, QCstopbits
);
2427 tem
= make_number (1);
2429 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2430 error (":stopbits must be nil (1 stopbit), 1, or 2");
2431 summary
[2] = XINT (tem
) + '0';
2432 #if defined (CSTOPB)
2433 attr
.c_cflag
&= ~CSTOPB
;
2434 if (XINT (tem
) == 2)
2435 attr
.c_cflag
|= CSTOPB
;
2437 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2438 if (XINT (tem
) != 1)
2439 error ("Stopbits cannot be configured");
2441 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2443 /* Configure flowcontrol. */
2444 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2445 tem
= Fplist_get (contact
, QCflowcontrol
);
2447 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2448 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2449 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2450 #if defined (CRTSCTS)
2451 attr
.c_cflag
&= ~CRTSCTS
;
2453 #if defined (CNEW_RTSCTS)
2454 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2456 #if defined (IXON) && defined (IXOFF)
2457 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2461 /* Already configured. */
2463 else if (EQ (tem
, Qhw
))
2465 #if defined (CRTSCTS)
2466 attr
.c_cflag
|= CRTSCTS
;
2467 #elif defined (CNEW_RTSCTS)
2468 attr
.c_cflag
|= CNEW_RTSCTS
;
2470 error ("Hardware flowcontrol (RTS/CTS) not supported");
2473 else if (EQ (tem
, Qsw
))
2475 #if defined (IXON) && defined (IXOFF)
2476 attr
.c_iflag
|= (IXON
| IXOFF
);
2478 error ("Software flowcontrol (XON/XOFF) not supported");
2481 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2483 /* Activate configuration. */
2484 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2486 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2488 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2489 p
->childp
= childp2
;
2492 #endif /* not DOS_NT */
2494 /* System depended enumeration of and access to system processes a-la ps(1). */
2498 /* Process enumeration and access via /proc. */
2501 list_system_processes (void)
2503 Lisp_Object procdir
, match
, proclist
, next
;
2504 struct gcpro gcpro1
, gcpro2
;
2505 register Lisp_Object tail
;
2507 GCPRO2 (procdir
, match
);
2508 /* For every process on the system, there's a directory in the
2509 "/proc" pseudo-directory whose name is the numeric ID of that
2511 procdir
= build_string ("/proc");
2512 match
= build_string ("[0-9]+");
2513 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2515 /* `proclist' gives process IDs as strings. Destructively convert
2516 each string into a number. */
2517 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2520 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2524 /* directory_files_internal returns the files in reverse order; undo
2526 proclist
= Fnreverse (proclist
);
2530 /* The WINDOWSNT implementation is in w32.c.
2531 The MSDOS implementation is in dosfns.c. */
2532 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2535 list_system_processes (void)
2540 #endif /* !defined (WINDOWSNT) */
2544 time_from_jiffies (unsigned long long tval
, long hz
,
2545 time_t *sec
, unsigned *usec
)
2547 unsigned long long ullsec
;
2551 tval
-= ullsec
* hz
;
2552 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2554 *usec
= tval
* 1000000 / hz
;
2556 *usec
= tval
/ (hz
/ 1000000);
2560 ltime_from_jiffies (unsigned long long tval
, long hz
)
2565 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2567 return list3 (make_number ((sec
>> 16) & 0xffff),
2568 make_number (sec
& 0xffff),
2569 make_number (usec
));
2573 get_up_time (time_t *sec
, unsigned *usec
)
2580 fup
= fopen ("/proc/uptime", "r");
2584 double uptime
, idletime
;
2586 /* The numbers in /proc/uptime use C-locale decimal point, but
2587 we already set ourselves to the C locale (see `fixup_locale'
2589 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2592 *usec
= (uptime
- *sec
) * 1000000;
2599 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2600 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2603 procfs_ttyname (int rdev
)
2606 char name
[PATH_MAX
];
2609 fdev
= fopen ("/proc/tty/drivers", "r");
2614 unsigned long minor_beg
, minor_end
;
2615 char minor
[25]; /* 2 32-bit numbers + dash */
2618 while (!feof (fdev
) && !ferror (fdev
))
2620 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2621 && major
== MAJOR (rdev
))
2623 minor_beg
= strtoul (minor
, &endp
, 0);
2625 minor_end
= minor_beg
;
2626 else if (*endp
== '-')
2627 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2631 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2633 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2641 return build_string (name
);
2644 static unsigned long
2645 procfs_get_total_memory (void)
2648 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2651 fmem
= fopen ("/proc/meminfo", "r");
2655 unsigned long entry_value
;
2656 char entry_name
[20]; /* the longest I saw is 13+1 */
2658 while (!feof (fmem
) && !ferror (fmem
))
2660 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2661 && strcmp (entry_name
, "MemTotal:") == 0)
2663 retval
= entry_value
;
2674 system_process_attributes (Lisp_Object pid
)
2676 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2680 long clocks_per_sec
;
2682 char procbuf
[1025], *p
, *q
;
2685 const char *cmd
= NULL
;
2686 char *cmdline
= NULL
;
2687 size_t cmdsize
= 0, cmdline_size
;
2689 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2690 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2691 long priority
, niceness
, rss
;
2692 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2695 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2697 Lisp_Object attrs
= Qnil
;
2698 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2699 struct gcpro gcpro1
, gcpro2
;
2700 EMACS_INT uid_eint
, gid_eint
;
2702 CHECK_NUMBER_OR_FLOAT (pid
);
2703 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2704 sprintf (procfn
, "/proc/%u", proc_id
);
2705 if (stat (procfn
, &st
) < 0)
2708 GCPRO2 (attrs
, decoded_cmd
);
2712 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2714 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2716 pw
= getpwuid (uid
);
2719 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2723 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2725 gr
= getgrgid (gid
);
2728 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2730 strcpy (fn
, procfn
);
2731 procfn_end
= fn
+ strlen (fn
);
2732 strcpy (procfn_end
, "/stat");
2733 fd
= emacs_open (fn
, O_RDONLY
, 0);
2734 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2736 procbuf
[nread
] = '\0';
2739 p
= strchr (p
, '(');
2742 q
= strrchr (p
+ 1, ')');
2757 /* Command name is encoded in locale-coding-system; decode it. */
2758 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2759 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2760 Vlocale_coding_system
, 0);
2761 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2765 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2767 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2768 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2769 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2770 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2771 &u_time
, &s_time
, &cutime
, &cstime
,
2772 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2777 state_str
[1] = '\0';
2778 tem
= build_string (state_str
);
2779 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2781 /* Stops GCC whining about limited range of data type. */
2786 thcount_eint
= thcount
;
2787 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2788 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2789 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2790 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2791 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2792 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2793 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2794 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2795 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2796 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2797 if (clocks_per_sec
< 0)
2798 clocks_per_sec
= 100;
2799 attrs
= Fcons (Fcons (Qutime
,
2800 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2802 attrs
= Fcons (Fcons (Qstime
,
2803 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2805 attrs
= Fcons (Fcons (Qtime
,
2806 ltime_from_jiffies (s_time
+ u_time
,
2809 attrs
= Fcons (Fcons (Qcutime
,
2810 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2812 attrs
= Fcons (Fcons (Qcstime
,
2813 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2815 attrs
= Fcons (Fcons (Qctime
,
2816 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2818 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2819 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2820 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2821 EMACS_GET_TIME (tnow
);
2822 get_up_time (&sec
, &usec
);
2823 EMACS_SET_SECS (telapsed
, sec
);
2824 EMACS_SET_USECS (telapsed
, usec
);
2825 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2826 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2827 EMACS_SET_SECS (tstart
, sec
);
2828 EMACS_SET_USECS (tstart
, usec
);
2829 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2830 attrs
= Fcons (Fcons (Qstart
,
2832 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2834 (EMACS_SECS (tstart
) & 0xffff),
2836 (EMACS_USECS (tstart
)))),
2838 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2839 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2840 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2841 attrs
= Fcons (Fcons (Qetime
,
2843 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2845 (EMACS_SECS (telapsed
) & 0xffff),
2847 (EMACS_USECS (telapsed
)))),
2849 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2850 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2853 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2854 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2857 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2864 strcpy (procfn_end
, "/cmdline");
2865 fd
= emacs_open (fn
, O_RDONLY
, 0);
2869 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2872 if (isspace (c
) || c
== '\\')
2873 cmdline_size
++; /* for later quoting, see below */
2877 cmdline
= xmalloc (cmdline_size
+ 1);
2878 lseek (fd
, 0L, SEEK_SET
);
2880 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2881 cmdline
[nread
++] = '\0';
2884 /* Assigning zero to `nread' makes us skip the following
2885 two loops, assign zero to cmdline_size, and enter the
2886 following `if' clause that handles unknown command
2890 /* We don't want trailing null characters. */
2891 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2893 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2895 /* Escape-quote whitespace and backslashes. */
2896 if (isspace (*p
) || *p
== '\\')
2898 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2902 else if (*p
== '\0')
2905 cmdline_size
= nread
;
2912 cmdsize
= strlen (cmd
);
2913 cmdline_size
= cmdsize
+ 2;
2914 cmdline
= xmalloc (cmdline_size
+ 1);
2915 strcpy (cmdline
, "[");
2916 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2919 /* Command line is encoded in locale-coding-system; decode it. */
2920 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2921 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2922 Vlocale_coding_system
, 0);
2924 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2931 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2933 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2934 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2935 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2936 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2937 #undef _FILE_OFFSET_BITS
2939 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2944 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2945 #define _FILE_OFFSET_BITS 64
2946 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2949 system_process_attributes (Lisp_Object pid
)
2951 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2956 struct psinfo pinfo
;
2959 int proc_id
, uid
, gid
;
2960 Lisp_Object attrs
= Qnil
;
2961 Lisp_Object decoded_cmd
, tem
;
2962 struct gcpro gcpro1
, gcpro2
;
2963 EMACS_INT uid_eint
, gid_eint
;
2965 CHECK_NUMBER_OR_FLOAT (pid
);
2966 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2967 sprintf (procfn
, "/proc/%u", proc_id
);
2968 if (stat (procfn
, &st
) < 0)
2971 GCPRO2 (attrs
, decoded_cmd
);
2975 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2977 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2979 pw
= getpwuid (uid
);
2982 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2986 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2988 gr
= getgrgid (gid
);
2991 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2993 strcpy (fn
, procfn
);
2994 procfn_end
= fn
+ strlen (fn
);
2995 strcpy (procfn_end
, "/psinfo");
2996 fd
= emacs_open (fn
, O_RDONLY
, 0);
2998 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3000 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3001 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3002 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3006 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3007 state_str
[1] = '\0';
3008 tem
= build_string (state_str
);
3009 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3012 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3013 need to get a string from it. */
3015 /* FIXME: missing: Qtpgid */
3027 Are they available? */
3029 attrs
= Fcons (Fcons (Qtime
,
3030 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3031 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3032 make_number (pinfo
.pr_time
.tv_nsec
))),
3035 attrs
= Fcons (Fcons (Qctime
,
3036 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3037 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3038 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3041 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3042 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3043 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3045 attrs
= Fcons (Fcons (Qstart
,
3046 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3047 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3048 make_number (pinfo
.pr_start
.tv_nsec
))),
3050 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3051 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3053 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3054 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3055 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3058 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3059 strlen (pinfo
.pr_fname
)),
3060 Vlocale_coding_system
, 0);
3061 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3063 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3064 strlen (pinfo
.pr_psargs
)),
3065 Vlocale_coding_system
, 0);
3066 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3076 /* The WINDOWSNT implementation is in w32.c.
3077 The MSDOS implementation is in dosfns.c. */
3078 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3081 system_process_attributes (Lisp_Object pid
)
3086 #endif /* !defined (WINDOWSNT) */