1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
29 #endif /* HAVE_PWD_H */
32 #endif /* HAVE_LIMITS_H */
38 #include "sysselect.h"
39 #include "blockinput.h"
43 #define write sys_write
48 #endif /* not WINDOWSNT */
50 #include <sys/types.h>
57 #define setpgrp setpgid
61 /* Get SI_SRPC_DOMAIN, if it is available. */
62 #ifdef HAVE_SYS_SYSTEMINFO_H
63 #include <sys/systeminfo.h>
66 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
70 #include <sys/param.h>
82 #ifdef HAVE_SYS_UTSNAME_H
83 #include <sys/utsname.h>
85 #endif /* HAVE_SYS_UTSNAME_H */
90 #include "termhooks.h"
93 #include "dispextern.h"
95 #include "cm.h" /* for reset_sys_modes */
97 /* Include this last. If it is ncurses header file, it adds a lot of
98 defines that interfere with stuff in other headers. Someone responsible
99 for ncurses messed up bigtime. See bug#6812. */
105 /* In process.h which conflicts with the local copy. */
107 int _cdecl
_spawnlp (int, const char *, const char *, ...);
108 int _cdecl
_getpid (void);
109 extern char *getwd (char *);
112 #include "syssignal.h"
119 #ifndef HAVE_STRUCT_UTIMBUF
120 /* We want to use utime rather than utimes, but we couldn't find the
121 structure declaration. We'll use the traditional one. */
129 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
134 static const int baud_convert
[] =
136 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
137 1800, 2400, 4800, 9600, 19200, 38400
142 void croak (char *) NO_RETURN
;
144 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
146 SIGMASKTYPE sigprocmask_set
;
149 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
151 /* Return the current working directory. Returns NULL on errors.
152 Any other returned value must be freed with free. This is used
153 only when get_current_dir_name is not defined on the system. */
155 get_current_dir_name (void)
159 struct stat dotstat
, pwdstat
;
160 /* If PWD is accurate, use it instead of calling getwd. PWD is
161 sometimes a nicer name, and using it may avoid a fatal error if a
162 parent directory is searchable but not readable. */
163 if ((pwd
= getenv ("PWD")) != 0
164 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
165 && stat (pwd
, &pwdstat
) == 0
166 && stat (".", &dotstat
) == 0
167 && dotstat
.st_ino
== pwdstat
.st_ino
168 && dotstat
.st_dev
== pwdstat
.st_dev
170 && strlen (pwd
) < MAXPATHLEN
174 buf
= (char *) malloc (strlen (pwd
) + 1);
182 size_t buf_size
= 1024;
183 buf
= (char *) malloc (buf_size
);
188 if (getcwd (buf
, buf_size
) == buf
)
192 int tmp_errno
= errno
;
198 buf
= (char *) realloc (buf
, buf_size
);
206 /* We need MAXPATHLEN here. */
207 buf
= (char *) malloc (MAXPATHLEN
+ 1);
210 if (getwd (buf
) == NULL
)
212 int tmp_errno
= errno
;
224 /* Discard pending input on all input descriptors. */
227 discard_tty_input (void)
230 struct emacs_tty buf
;
235 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
236 while (dos_keyread () != -1)
238 #else /* not MSDOS */
240 struct tty_display_info
*tty
;
241 for (tty
= tty_list
; tty
; tty
= tty
->next
)
243 if (tty
->input
) /* Is the device suspended? */
245 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
246 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
250 #endif /* not MSDOS */
251 #endif /* not WINDOWSNT */
257 /* Arrange for character C to be read as the next input from
259 XXX What if we have multiple ttys?
265 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
268 /* Should perhaps error if in batch mode */
270 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
271 #else /* no TIOCSTI */
272 error ("Cannot stuff terminal input characters in this version of Unix");
273 #endif /* no TIOCSTI */
279 init_baud_rate (int fd
)
287 #else /* not DOS_NT */
292 emacs_ospeed
= cfgetospeed (&sg
);
293 #endif /* not DOS_NT */
296 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
297 ? baud_convert
[emacs_ospeed
] : 9600);
304 int wait_debugging
; /* Set nonzero to make following function work under dbx
305 (at least for bsd). */
308 wait_for_termination_signal (void)
312 /* Wait for subprocess with process id `pid' to terminate and
313 make sure it will get eliminated (not remain forever as a zombie) */
316 wait_for_termination (int pid
)
320 #if defined (BSD_SYSTEM) || defined (HPUX)
321 /* Note that kill returns -1 even if the process is just a zombie now.
322 But inevitably a SIGCHLD interrupt should be generated
323 and child_sig will do wait3 and make the process go away. */
324 /* There is some indication that there is a bug involved with
325 termination of subprocesses, perhaps involving a kernel bug too,
326 but no idea what it is. Just as a hunch we signal SIGCHLD to see
327 if that causes the problem to go away or get worse. */
328 sigsetmask (sigmask (SIGCHLD
));
329 if (0 > kill (pid
, 0))
331 sigsetmask (SIGEMPTYMASK
);
332 kill (getpid (), SIGCHLD
);
338 sigpause (SIGEMPTYMASK
);
339 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
343 #else /* not WINDOWSNT */
344 sigblock (sigmask (SIGCHLD
));
346 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
348 sigunblock (sigmask (SIGCHLD
));
352 sigsuspend (&empty_mask
);
353 #endif /* not WINDOWSNT */
354 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
359 * flush any pending output
360 * (may flush input as well; it does not matter the way we use it)
364 flush_pending_output (int channel
)
367 /* If we try this, we get hit with SIGTTIN, because
368 the child's tty belongs to the child's pgrp. */
371 ioctl (channel
, TCFLSH
, 1);
375 /* 3rd arg should be ignored
376 but some 4.2 kernels actually want the address of an int
377 and nonzero means something different. */
378 ioctl (channel
, TIOCFLUSH
, &zero
);
384 /* Set up the terminal at the other end of a pseudo-terminal that
385 we will be controlling an inferior through.
386 It should not echo or do line-editing, since that is done
387 in Emacs. No padding needed for insertion into an Emacs buffer. */
390 child_setup_tty (int out
)
395 EMACS_GET_TTY (out
, &s
);
396 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
397 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
399 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
400 Some versions of GNU Hurd do not have FFDLY? */
402 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
403 /* No output delays */
405 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
406 /* No output delays */
409 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
410 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
412 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
415 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
418 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
420 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
421 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
422 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
423 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
426 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
429 #ifdef SIGNALS_VIA_CHARACTERS
430 /* the QUIT and INTR character are used in process_send_signal
431 so set them here to something useful. */
432 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
433 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
434 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
435 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
436 #endif /* not SIGNALS_VIA_CHARACTERS */
439 /* Also, PTY overloads NUL and BREAK.
440 don't ignore break, but don't signal either, so it looks like NUL. */
441 s
.main
.c_iflag
&= ~IGNBRK
;
442 s
.main
.c_iflag
&= ~BRKINT
;
443 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
444 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
445 would force it to 0377. That looks like duplicated code. */
446 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
449 /* We originally enabled ICANON (and set VEOF to 04), and then had
450 proces.c send additional EOF chars to flush the output when faced
451 with long lines, but this leads to weird effects when the
452 subprocess has disabled ICANON and ends up seeing those spurious
453 extra EOFs. So we don't send EOFs any more in
454 process.c:send_process. First we tried to disable ICANON by
455 default, so if a subsprocess sets up ICANON, it's his problem (or
456 the Elisp package that talks to it) to deal with lines that are
457 too long. But this disables some features, such as the ability
458 to send EOF signals. So we re-enabled ICANON but there is no
459 more "send eof to flush" going on (which is wrong and unportable
460 in itself). The correct way to handle too much output is to
461 buffer what could not be written and then write it again when
462 select returns ok for writing. This has it own set of
463 problems. Write is now asynchronous, is that a problem? How much
464 do we buffer, and what do we do when that limit is reached? */
466 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
467 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
468 #if 0 /* These settings only apply to non-ICANON mode. */
469 s
.main
.c_cc
[VMIN
] = 1;
470 s
.main
.c_cc
[VTIME
] = 0;
473 EMACS_SET_TTY (out
, &s
, 0);
474 #endif /* not WINDOWSNT */
476 #endif /* not MSDOS */
479 /* Record a signal code and the handler for it. */
483 SIGTYPE (*handler
) (int);
486 static void save_signal_handlers (struct save_signal
*);
487 static void restore_signal_handlers (struct save_signal
*);
489 /* Suspend the Emacs process; give terminal to its superior. */
494 #if defined (SIGTSTP) && !defined (MSDOS)
497 int pgrp
= EMACS_GETPGRP (0);
498 EMACS_KILLPG (pgrp
, SIGTSTP
);
501 #else /* No SIGTSTP */
502 /* On a system where suspending is not implemented,
503 instead fork a subshell and let it talk directly to the terminal
507 #endif /* no SIGTSTP */
510 /* Fork a subshell. */
515 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
517 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
520 struct save_signal saved_handlers
[5];
522 unsigned char *str
= 0;
525 saved_handlers
[0].code
= SIGINT
;
526 saved_handlers
[1].code
= SIGQUIT
;
527 saved_handlers
[2].code
= SIGTERM
;
529 saved_handlers
[3].code
= SIGIO
;
530 saved_handlers
[4].code
= 0;
532 saved_handlers
[3].code
= 0;
535 /* Mentioning current_buffer->buffer would mean including buffer.h,
536 which somehow wedges the hp compiler. So instead... */
538 dir
= intern ("default-directory");
539 if (NILP (Fboundp (dir
)))
541 dir
= Fsymbol_value (dir
);
545 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
546 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
548 memcpy (str
, SDATA (dir
), len
);
549 if (str
[len
- 1] != '/') str
[len
++] = '/';
555 save_signal_handlers (saved_handlers
);
556 synch_process_alive
= 1;
560 error ("Can't spawn subshell");
567 #ifdef DOS_NT /* MW, Aug 1993 */
570 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
573 sh
= (char *) egetenv ("SHELL");
577 /* Use our buffer's default directory for the subshell. */
579 chdir ((char *) str
);
581 close_process_descs (); /* Close Emacs's pipes/ptys */
583 #ifdef SET_EMACS_PRIORITY
585 extern EMACS_INT emacs_priority
;
587 if (emacs_priority
< 0)
588 nice (-emacs_priority
);
592 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
594 char *epwd
= getenv ("PWD");
595 char old_pwd
[MAXPATHLEN
+1+4];
597 /* If PWD is set, pass it with corrected value. */
600 strcpy (old_pwd
, epwd
);
601 if (str
[len
- 1] == '/')
603 setenv ("PWD", str
, 1);
608 putenv (old_pwd
); /* restore previous value */
610 #else /* not MSDOS */
612 /* Waits for process completion */
613 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
616 write (1, "Can't execute subshell", 22);
617 #else /* not WINDOWSNT */
618 execlp (sh
, sh
, (char *) 0);
619 write (1, "Can't execute subshell", 22);
621 #endif /* not WINDOWSNT */
622 #endif /* not MSDOS */
625 /* Do this now if we did not do it before. */
627 save_signal_handlers (saved_handlers
);
628 synch_process_alive
= 1;
632 wait_for_termination (pid
);
634 restore_signal_handlers (saved_handlers
);
635 synch_process_alive
= 0;
639 save_signal_handlers (struct save_signal
*saved_handlers
)
641 while (saved_handlers
->code
)
643 saved_handlers
->handler
644 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
650 restore_signal_handlers (struct save_signal
*saved_handlers
)
652 while (saved_handlers
->code
)
654 signal (saved_handlers
->code
, saved_handlers
->handler
);
660 /* If SIGIO is broken, don't do anything. */
677 unrequest_sigio (void)
684 int old_fcntl_flags
[MAXDESC
];
690 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
691 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
693 interrupts_deferred
= 0;
700 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
704 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
705 /* XXX Uhm, FASYNC is not used anymore here. */
706 /* XXX Yeah, but you need it for SIGIO, don't you? */
715 sigunblock (sigmask (SIGWINCH
));
717 sigunblock (sigmask (SIGIO
));
719 interrupts_deferred
= 0;
723 unrequest_sigio (void)
728 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
734 sigblock (sigmask (SIGWINCH
));
736 sigblock (sigmask (SIGIO
));
737 interrupts_deferred
= 1;
740 #else /* no FASYNC */
746 if (noninteractive
|| read_socket_hook
)
749 croak ("request_sigio");
753 unrequest_sigio (void)
755 if (noninteractive
|| read_socket_hook
)
758 croak ("unrequest_sigio");
767 /* Getting and setting emacs_tty structures. */
769 /* Set *TC to the parameters associated with the terminal FD.
770 Return zero if all's well, or -1 if we ran into an error we
771 couldn't deal with. */
773 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
775 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
777 /* We have those nifty POSIX tcmumbleattr functions. */
778 memset (&settings
->main
, 0, sizeof (settings
->main
));
779 if (tcgetattr (fd
, &settings
->main
) < 0)
783 /* We have survived the tempest. */
788 /* Set the parameters of the tty on FD according to the contents of
789 *SETTINGS. If FLUSHP is non-zero, we discard input.
790 Return 0 if all went well, and -1 if anything failed. */
793 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
795 /* Set the primary parameters - baud rate, character size, etcetera. */
798 /* We have those nifty POSIX tcmumbleattr functions.
799 William J. Smith <wjs@wiis.wang.com> writes:
800 "POSIX 1003.1 defines tcsetattr to return success if it was
801 able to perform any of the requested actions, even if some
802 of the requested actions could not be performed.
803 We must read settings back to ensure tty setup properly.
804 AIX requires this to keep tty from hanging occasionally." */
805 /* This make sure that we don't loop indefinitely in here. */
806 for (i
= 0 ; i
< 10 ; i
++)
807 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
818 memset (&new, 0, sizeof (new));
819 /* Get the current settings, and see if they're what we asked for. */
820 tcgetattr (fd
, &new);
821 /* We cannot use memcmp on the whole structure here because under
822 * aix386 the termios structure has some reserved field that may
825 if ( new.c_iflag
== settings
->main
.c_iflag
826 && new.c_oflag
== settings
->main
.c_oflag
827 && new.c_cflag
== settings
->main
.c_cflag
828 && new.c_lflag
== settings
->main
.c_lflag
829 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
836 /* We have survived the tempest. */
843 int old_fcntl_owner
[MAXDESC
];
844 #endif /* F_SETOWN */
846 /* This may also be defined in stdio,
847 but if so, this does no harm,
848 and using the same name avoids wasting the other one's space. */
851 unsigned char _sobuf
[BUFSIZ
+8];
856 /* Initialize the terminal mode on all tty devices that are currently
860 init_all_sys_modes (void)
862 struct tty_display_info
*tty
;
863 for (tty
= tty_list
; tty
; tty
= tty
->next
)
864 init_sys_modes (tty
);
867 /* Initialize the terminal mode on the given tty device. */
870 init_sys_modes (struct tty_display_info
*tty_out
)
872 struct emacs_tty tty
;
874 Vtty_erase_char
= Qnil
;
879 if (!tty_out
->output
)
880 return; /* The tty is suspended. */
882 if (! tty_out
->old_tty
)
883 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
885 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
887 tty
= *tty_out
->old_tty
;
889 #if !defined (DOS_NT)
890 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
892 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
893 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
894 #ifdef INLCR /* I'm just being cautious,
895 since I can't check how widespread INLCR is--rms. */
896 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
899 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
901 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
902 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
904 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
906 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
907 if (tty_out
->flow_control
)
909 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
911 tty
.main
.c_iflag
&= ~IXANY
;
915 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
916 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
918 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
920 if (tty_out
->meta_key
)
922 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
923 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
926 if (tty_out
->input
== stdin
)
928 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
929 /* Set up C-g for both SIGQUIT and SIGINT.
930 We don't know which we will get, but we handle both alike
931 so which one it really gives us does not matter. */
932 tty
.main
.c_cc
[VQUIT
] = quit_char
;
936 /* We normally don't get interrupt or quit signals from tty
937 devices other than our controlling terminal; therefore,
938 we must handle C-g as normal input. Unfortunately, this
939 means that the interrupt and quit feature must be
940 disabled on secondary ttys, or we would not even see the
943 Note that even though emacsclient could have special code
944 to pass SIGINT to Emacs, we should _not_ enable
945 interrupt/quit keys for emacsclient frames. This means
946 that we can't break out of loops in C code from a
947 secondary tty frame, but we can always decide what
948 display the C-g came from, which is more important from a
949 usability point of view. (Consider the case when two
950 people work together using the same Emacs instance.) */
951 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
952 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
954 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
955 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
957 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
962 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
965 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
967 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
968 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
971 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
974 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
975 #endif /* VREPRINT */
977 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
980 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
981 #endif /* VDISCARD */
983 if (tty_out
->flow_control
)
986 tty
.main
.c_cc
[VSTART
] = '\021';
989 tty
.main
.c_cc
[VSTOP
] = '\023';
995 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
998 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1003 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1004 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1005 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1006 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1007 if (tty_out
->flow_control
)
1010 tty
.main
.c_cc
[VSTART
] = '\021';
1013 tty
.main
.c_cc
[VSTOP
] = '\023';
1016 /* Also, PTY overloads NUL and BREAK.
1017 don't ignore break, but don't signal either, so it looks like NUL.
1018 This really serves a purpose only if running in an XTERM window
1019 or via TELNET or the like, but does no harm elsewhere. */
1020 tty
.main
.c_iflag
&= ~IGNBRK
;
1021 tty
.main
.c_iflag
&= ~BRKINT
;
1023 #endif /* not DOS_NT */
1025 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1026 if (!tty_out
->term_initted
)
1027 internal_terminal_init ();
1028 dos_ttraw (tty_out
);
1031 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1033 /* This code added to insure that, if flow-control is not to be used,
1034 we have an unlocked terminal at the start. */
1037 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1040 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1043 #if !defined (DOS_NT)
1045 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1050 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1051 if (interrupt_input
)
1053 old_fcntl_owner
[fileno (tty_out
->input
)] =
1054 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1055 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1056 init_sigio (fileno (tty_out
->input
));
1058 if (gpm_tty
== tty_out
)
1060 /* Arrange for mouse events to give us SIGIO signals. */
1061 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1062 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1063 init_sigio (gpm_fd
);
1065 #endif /* HAVE_GPM */
1067 #endif /* F_GETOWN */
1068 #endif /* F_SETFL */
1071 /* This symbol is defined on recent USG systems.
1072 Someone says without this call USG won't really buffer the file
1073 even with a call to setbuf. */
1074 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1076 setbuf (tty_out
->output
, (char *) _sobuf
);
1079 if (tty_out
->terminal
->set_terminal_modes_hook
)
1080 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1082 if (!tty_out
->term_initted
)
1084 Lisp_Object tail
, frame
;
1085 FOR_EACH_FRAME (tail
, frame
)
1087 /* XXX This needs to be revised. */
1088 if (FRAME_TERMCAP_P (XFRAME (frame
))
1089 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1090 init_frame_faces (XFRAME (frame
));
1094 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1096 /* We used to call "direct_output_forward_char(0)" here,
1097 but it's not clear why, since it may not do anything anyway. */
1101 Lisp_Object tail
, frame
;
1103 FOR_EACH_FRAME (tail
, frame
)
1105 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1106 || FRAME_MSDOS_P (XFRAME (frame
)))
1107 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1108 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1112 tty_out
->term_initted
= 1;
1115 /* Return nonzero if safe to use tabs in output.
1116 At the time this is called, init_sys_modes has not been done yet. */
1119 tabs_safe_p (int fd
)
1121 struct emacs_tty etty
;
1123 EMACS_GET_TTY (fd
, &etty
);
1124 return EMACS_TTY_TABS_OK (&etty
);
1127 /* Get terminal size from system.
1128 Store number of lines into *HEIGHTP and width into *WIDTHP.
1129 We store 0 if there's no valid information. */
1132 get_tty_size (int fd
, int *widthp
, int *heightp
)
1138 struct winsize size
;
1140 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1141 *widthp
= *heightp
= 0;
1144 *widthp
= size
.ws_col
;
1145 *heightp
= size
.ws_row
;
1151 /* SunOS - style. */
1152 struct ttysize size
;
1154 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1155 *widthp
= *heightp
= 0;
1158 *widthp
= size
.ts_cols
;
1159 *heightp
= size
.ts_lines
;
1164 *widthp
= ScreenCols ();
1165 *heightp
= ScreenRows ();
1166 #else /* system doesn't know size */
1170 #endif /* not SunOS-style */
1171 #endif /* not BSD-style */
1174 /* Set the logical window size associated with descriptor FD
1175 to HEIGHT and WIDTH. This is used mainly with ptys. */
1178 set_window_size (int fd
, int height
, int width
)
1183 struct winsize size
;
1184 size
.ws_row
= height
;
1185 size
.ws_col
= width
;
1187 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1188 return 0; /* error */
1195 /* SunOS - style. */
1196 struct ttysize size
;
1197 size
.ts_lines
= height
;
1198 size
.ts_cols
= width
;
1200 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1206 #endif /* not SunOS-style */
1207 #endif /* not BSD-style */
1212 /* Prepare all terminal devices for exiting Emacs. */
1215 reset_all_sys_modes (void)
1217 struct tty_display_info
*tty
;
1218 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1219 reset_sys_modes (tty
);
1222 /* Prepare the terminal for closing it; move the cursor to the
1223 bottom of the frame, turn off interrupt-driven I/O, etc. */
1226 reset_sys_modes (struct tty_display_info
*tty_out
)
1233 if (!tty_out
->term_initted
)
1236 if (!tty_out
->output
)
1237 return; /* The tty is suspended. */
1239 /* Go to and clear the last line of the terminal. */
1241 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1243 /* Code adapted from tty_clear_end_of_line. */
1244 if (tty_out
->TS_clr_line
)
1246 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1249 { /* have to do it the hard way */
1251 tty_turn_off_insert (tty_out
);
1253 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1255 fputc (' ', tty_out
->output
);
1259 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1260 fflush (tty_out
->output
);
1262 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1263 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1266 /* Avoid possible loss of output when changing terminal modes. */
1267 fsync (fileno (tty_out
->output
));
1271 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1272 if (interrupt_input
)
1274 reset_sigio (fileno (tty_out
->input
));
1275 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1276 old_fcntl_owner
[fileno (tty_out
->input
)]);
1278 #endif /* F_SETOWN */
1280 fcntl (fileno (tty_out
->input
), F_SETFL
,
1281 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1283 #endif /* F_SETFL */
1285 if (tty_out
->old_tty
)
1286 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1287 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1290 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1298 /* Set up the proper status flags for use of a pty. */
1303 /* I'm told that TOICREMOTE does not mean control chars
1304 "can't be sent" but rather that they don't have
1305 input-editing or signaling effects.
1306 That should be good, because we have other ways
1307 to do those things in Emacs.
1308 However, telnet mode seems not to work on 4.2.
1309 So TIOCREMOTE is turned off now. */
1311 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1312 will hang. In particular, the "timeout" feature (which
1313 causes a read to return if there is no data available)
1314 does this. Also it is known that telnet mode will hang
1315 in such a way that Emacs must be stopped (perhaps this
1316 is the same problem).
1318 If TIOCREMOTE is turned off, then there is a bug in
1319 hp-ux which sometimes loses data. Apparently the
1320 code which blocks the master process when the internal
1321 buffer fills up does not work. Other than this,
1322 though, everything else seems to work fine.
1324 Since the latter lossage is more benign, we may as well
1325 lose that way. -- cph */
1327 #if defined(UNIX98_PTYS)
1330 ioctl (fd
, FIONBIO
, &on
);
1335 #endif /* HAVE_PTYS */
1337 /* init_system_name sets up the string for the Lisp function
1338 system-name to return. */
1340 extern Lisp_Object Vsystem_name
;
1343 #include <sys/socket.h>
1345 #endif /* HAVE_SOCKETS */
1348 #ifndef HAVE_H_ERRNO
1351 #endif /* TRY_AGAIN */
1354 init_system_name (void)
1356 #ifndef HAVE_GETHOSTNAME
1359 Vsystem_name
= build_string (uts
.nodename
);
1360 #else /* HAVE_GETHOSTNAME */
1361 unsigned int hostname_size
= 256;
1362 char *hostname
= (char *) alloca (hostname_size
);
1364 /* Try to get the host name; if the buffer is too short, try
1365 again. Apparently, the only indication gethostname gives of
1366 whether the buffer was large enough is the presence or absence
1367 of a '\0' in the string. Eech. */
1370 gethostname (hostname
, hostname_size
- 1);
1371 hostname
[hostname_size
- 1] = '\0';
1373 /* Was the buffer large enough for the '\0'? */
1374 if (strlen (hostname
) < hostname_size
- 1)
1377 hostname_size
<<= 1;
1378 hostname
= (char *) alloca (hostname_size
);
1381 /* Turn the hostname into the official, fully-qualified hostname.
1382 Don't do this if we're going to dump; this can confuse system
1383 libraries on some machines and make the dumped emacs core dump. */
1386 #endif /* not CANNOT_DUMP */
1387 if (! strchr (hostname
, '.'))
1390 #ifdef HAVE_GETADDRINFO
1391 struct addrinfo
*res
;
1392 struct addrinfo hints
;
1395 memset (&hints
, 0, sizeof (hints
));
1396 hints
.ai_socktype
= SOCK_STREAM
;
1397 hints
.ai_flags
= AI_CANONNAME
;
1399 for (count
= 0;; count
++)
1401 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1402 || ret
!= EAI_AGAIN
)
1407 Fsleep_for (make_number (1), Qnil
);
1412 struct addrinfo
*it
= res
;
1415 char *fqdn
= it
->ai_canonname
;
1416 if (fqdn
&& strchr (fqdn
, '.')
1417 && strcmp (fqdn
, "localhost.localdomain") != 0)
1423 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1424 strcpy (hostname
, it
->ai_canonname
);
1428 #else /* !HAVE_GETADDRINFO */
1430 for (count
= 0;; count
++)
1436 hp
= gethostbyname (hostname
);
1438 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1445 Fsleep_for (make_number (1), Qnil
);
1450 char *fqdn
= (char *) hp
->h_name
;
1452 if (!strchr (fqdn
, '.'))
1454 /* We still don't have a fully qualified domain name.
1455 Try to find one in the list of alternate names */
1456 char **alias
= hp
->h_aliases
;
1458 && (!strchr (*alias
, '.')
1459 || !strcmp (*alias
, "localhost.localdomain")))
1466 #endif /* !HAVE_GETADDRINFO */
1468 #endif /* HAVE_SOCKETS */
1469 Vsystem_name
= build_string (hostname
);
1470 #endif /* HAVE_GETHOSTNAME */
1473 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1474 if (*p
== ' ' || *p
== '\t')
1479 /* POSIX signals support - DJB */
1480 /* Anyone with POSIX signals should have ANSI C declarations */
1482 sigset_t empty_mask
, full_mask
;
1487 sys_signal (int signal_number
, signal_handler_t action
)
1489 struct sigaction new_action
, old_action
;
1490 sigemptyset (&new_action
.sa_mask
);
1491 new_action
.sa_handler
= action
;
1492 new_action
.sa_flags
= 0;
1493 #if defined (SA_RESTART)
1494 /* Emacs mostly works better with restartable system services. If this
1495 flag exists, we probably want to turn it on here.
1496 However, on some systems this resets the timeout of `select'
1497 which means that `select' never finishes if it keeps getting signals.
1498 BROKEN_SA_RESTART is defined on those systems. */
1499 /* It's not clear why the comment above says "mostly works better". --Stef
1500 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1501 for pending input so we need long-running syscalls to be interrupted
1502 after a signal that sets the interrupt_input_pending flag. */
1503 /* Non-interactive keyboard input goes through stdio, where we always
1504 want restartable system calls. */
1505 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1508 new_action
.sa_flags
= SA_RESTART
;
1510 sigaction (signal_number
, &new_action
, &old_action
);
1511 return (old_action
.sa_handler
);
1514 #endif /* WINDOWSNT */
1517 /* If we're compiling with GCC, we don't need this function, since it
1518 can be written as a macro. */
1520 sys_sigmask (int sig
)
1523 sigemptyset (&mask
);
1524 sigaddset (&mask
, sig
);
1529 /* I'd like to have these guys return pointers to the mask storage in here,
1530 but there'd be trouble if the code was saving multiple masks. I'll be
1531 safe and pass the structure. It normally won't be more than 2 bytes
1535 sys_sigblock (sigset_t new_mask
)
1538 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1543 sys_sigunblock (sigset_t new_mask
)
1546 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1551 sys_sigsetmask (sigset_t new_mask
)
1554 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1559 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1560 static char *my_sys_siglist
[NSIG
];
1564 # define sys_siglist my_sys_siglist
1570 sigemptyset (&empty_mask
);
1571 sigfillset (&full_mask
);
1573 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1577 sys_siglist
[SIGABRT
] = "Aborted";
1580 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1583 sys_siglist
[SIGALRM
] = "Alarm clock";
1586 sys_siglist
[SIGBUS
] = "Bus error";
1589 sys_siglist
[SIGCLD
] = "Child status changed";
1592 sys_siglist
[SIGCHLD
] = "Child status changed";
1595 sys_siglist
[SIGCONT
] = "Continued";
1598 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1601 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1604 sys_siglist
[SIGEMT
] = "Emulation trap";
1607 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1610 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1613 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1616 sys_siglist
[SIGHUP
] = "Hangup";
1619 sys_siglist
[SIGILL
] = "Illegal instruction";
1622 sys_siglist
[SIGINT
] = "Interrupt";
1625 sys_siglist
[SIGIO
] = "I/O possible";
1628 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1631 sys_siglist
[SIGIOT
] = "IOT trap";
1634 sys_siglist
[SIGKILL
] = "Killed";
1637 sys_siglist
[SIGLOST
] = "Resource lost";
1640 sys_siglist
[SIGLWP
] = "SIGLWP";
1643 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1646 sys_siglist
[SIGWIND
] = "SIGPHONE";
1649 sys_siglist
[SIGPIPE
] = "Broken pipe";
1652 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1655 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1658 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1661 sys_siglist
[SIGPWR
] = "Power-fail restart";
1664 sys_siglist
[SIGQUIT
] = "Quit";
1667 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1670 sys_siglist
[SIGSAK
] = "Secure attention";
1673 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1676 sys_siglist
[SIGSOUND
] = "Sound completed";
1679 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1682 sys_siglist
[SIGSTP
] = "Stopped (user)";
1685 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1688 sys_siglist
[SIGTERM
] = "Terminated";
1691 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1694 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1697 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1700 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1703 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1706 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1709 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1712 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1715 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1718 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1721 sys_siglist
[SIGWINCH
] = "Window size changed";
1724 sys_siglist
[SIGWIND
] = "SIGWIND";
1727 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1730 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1733 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1742 /* Figure out how many bits the system's random number generator uses.
1743 `random' and `lrand48' are assumed to return 31 usable bits.
1744 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1745 so we'll shift it and treat it like the 15-bit USG `rand'. */
1749 # define RAND_BITS 31
1750 # else /* !HAVE_RANDOM */
1751 # ifdef HAVE_LRAND48
1752 # define RAND_BITS 31
1753 # define random lrand48
1754 # else /* !HAVE_LRAND48 */
1755 # define RAND_BITS 15
1756 # if RAND_MAX == 32767
1757 # define random rand
1758 # else /* RAND_MAX != 32767 */
1759 # if RAND_MAX == 2147483647
1760 # define random() (rand () >> 16)
1761 # else /* RAND_MAX != 2147483647 */
1763 # define random rand
1765 # define random() (rand () >> 16)
1767 # endif /* RAND_MAX != 2147483647 */
1768 # endif /* RAND_MAX != 32767 */
1769 # endif /* !HAVE_LRAND48 */
1770 # endif /* !HAVE_RANDOM */
1771 #endif /* !RAND_BITS */
1774 seed_random (long int arg
)
1777 srandom ((unsigned int)arg
);
1779 # ifdef HAVE_LRAND48
1782 srand ((unsigned int)arg
);
1788 * Build a full Emacs-sized word out of whatever we've got.
1789 * This suffices even for a 64-bit architecture with a 15-bit rand.
1794 long val
= random ();
1795 #if VALBITS > RAND_BITS
1796 val
= (val
<< RAND_BITS
) ^ random ();
1797 #if VALBITS > 2*RAND_BITS
1798 val
= (val
<< RAND_BITS
) ^ random ();
1799 #if VALBITS > 3*RAND_BITS
1800 val
= (val
<< RAND_BITS
) ^ random ();
1801 #if VALBITS > 4*RAND_BITS
1802 val
= (val
<< RAND_BITS
) ^ random ();
1803 #endif /* need at least 5 */
1804 #endif /* need at least 4 */
1805 #endif /* need at least 3 */
1806 #endif /* need at least 2 */
1807 return val
& ((1L << VALBITS
) - 1);
1810 #ifndef HAVE_STRERROR
1816 extern char *sys_errlist
[];
1817 extern int sys_nerr
;
1819 if (errnum
>= 0 && errnum
< sys_nerr
)
1820 return sys_errlist
[errnum
];
1821 return (char *) "Unknown error";
1823 #endif /* not WINDOWSNT */
1824 #endif /* ! HAVE_STRERROR */
1827 emacs_open (const char *path
, int oflag
, int mode
)
1829 register int rtnval
;
1831 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1832 && (errno
== EINTR
))
1838 emacs_close (int fd
)
1841 register int rtnval
;
1843 while ((rtnval
= close (fd
)) == -1
1844 && (errno
== EINTR
))
1847 /* If close is interrupted SunOS 4.1 may or may not have closed the
1848 file descriptor. If it did the second close will fail with
1849 errno = EBADF. That means we have succeeded. */
1850 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1857 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1859 register int rtnval
;
1861 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1862 && (errno
== EINTR
))
1868 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1870 register int rtnval
, bytes_written
;
1876 rtnval
= write (fildes
, buf
, nbyte
);
1883 /* I originally used `QUIT' but that might causes files to
1884 be truncated if you hit C-g in the middle of it. --Stef */
1885 process_pending_signals ();
1890 return (bytes_written
? bytes_written
: -1);
1895 bytes_written
+= rtnval
;
1897 return (bytes_written
);
1902 * All of the following are for USG.
1904 * On USG systems the system calls are INTERRUPTIBLE by signals
1905 * that the user program has elected to catch. Thus the system call
1906 * must be retried in these cases. To handle this without massive
1907 * changes in the source code, we remap the standard system call names
1908 * to names for our own functions in sysdep.c that do the system call
1909 * with retries. Actually, for portability reasons, it is good
1910 * programming practice, as this example shows, to limit all actual
1911 * system calls to a single occurrence in the source. Sure, this
1912 * adds an extra level of function call overhead but it is almost
1913 * always negligible. Fred Fish, Unisoft Systems Inc.
1917 * Warning, this function may not duplicate 4.2 action properly
1918 * under error conditions.
1922 /* In 4.1, param.h fails to define this. */
1923 #define MAXPATHLEN 1024
1929 getwd (char *pathname
)
1931 char *npath
, *spath
;
1932 extern char *getcwd (char *, size_t);
1934 BLOCK_INPUT
; /* getcwd uses malloc */
1935 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1941 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1942 up to first slash. Should be harmless on other systems. */
1943 while (*npath
&& *npath
!= '/')
1945 strcpy (pathname
, npath
);
1946 free (spath
); /* getcwd uses malloc */
1951 #endif /* HAVE_GETWD */
1954 * Emulate rename using unlink/link. Note that this is
1955 * only partially correct. Also, doesn't enforce restriction
1956 * that files be of same type (regular->regular, dir->dir, etc).
1962 rename (const char *from
, const char *to
)
1964 if (access (from
, 0) == 0)
1967 if (link (from
, to
) == 0)
1968 if (unlink (from
) == 0)
1977 #if defined(HPUX) && !defined(HAVE_PERROR)
1979 /* HPUX curses library references perror, but as far as we know
1980 it won't be called. Anyway this definition will do for now. */
1986 #endif /* HPUX and not HAVE_PERROR */
1991 * Emulate BSD dup2. First close newd if it already exists.
1992 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1993 * until we are, then close the unsuccessful ones.
1997 dup2 (int oldd
, int newd
)
1999 register int fd
, ret
;
2004 return fcntl (oldd
, F_DUPFD
, newd
);
2011 ret
= dup2 (old
,new);
2017 #endif /* not HAVE_DUP2 */
2020 * Gettimeofday. Simulate as much as possible. Only accurate
2021 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2022 * Only needed when subprocesses are defined.
2025 #ifndef HAVE_GETTIMEOFDAY
2029 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2031 extern long time (long);
2033 tp
->tv_sec
= time ((long *)0);
2036 tzp
->tz_minuteswest
= -1;
2041 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2044 * This function will go away as soon as all the stubs fixed. (fnf)
2048 croak (char *badfunc
)
2050 printf ("%s not yet implemented\r\n", badfunc
);
2051 reset_all_sys_modes ();
2057 /* Directory routines for systems that don't have them. */
2059 #ifdef HAVE_DIRENT_H
2063 #if !defined (HAVE_CLOSEDIR)
2066 closedir (DIR *dirp
/* stream from opendir */)
2070 rtnval
= emacs_close (dirp
->dd_fd
);
2071 xfree ((char *) dirp
);
2075 #endif /* not HAVE_CLOSEDIR */
2076 #endif /* HAVE_DIRENT_H */
2080 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2083 struct timeval tv
[2];
2086 return utimes (filename
, tv
);
2087 #else /* not HAVE_UTIMES */
2089 utb
.actime
= EMACS_SECS (atime
);
2090 utb
.modtime
= EMACS_SECS (mtime
);
2091 return utime (filename
, &utb
);
2092 #endif /* not HAVE_UTIMES */
2095 /* mkdir and rmdir functions, for systems which don't have them. */
2099 * Written by Robert Rother, Mariah Corporation, August 1985.
2101 * If you want it, it's yours. All I ask in return is that if you
2102 * figure out how to do this in a Bourne Shell script you send me
2104 * sdcsvax!rmr or rmr@uscd
2106 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2107 * subroutine. 11Mar86; hoptoad!gnu
2109 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2110 * subroutine didn't return EEXIST. It does now.
2117 mkdir (char *dpath
, int dmode
)
2119 int cpid
, status
, fd
;
2120 struct stat statbuf
;
2122 if (stat (dpath
, &statbuf
) == 0)
2124 errno
= EEXIST
; /* Stat worked, so it already exists */
2128 /* If stat fails for a reason other than non-existence, return error */
2129 if (errno
!= ENOENT
)
2132 synch_process_alive
= 1;
2133 switch (cpid
= fork ())
2136 case -1: /* Error in fork */
2137 return (-1); /* Errno is set already */
2139 case 0: /* Child process */
2141 * Cheap hack to set mode of new directory. Since this
2142 * child process is going away anyway, we zap its umask.
2143 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2144 * directory. Does anybody care?
2146 status
= umask (0); /* Get current umask */
2147 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2148 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2155 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2156 _exit (-1); /* Can't exec /bin/mkdir */
2158 default: /* Parent process */
2159 wait_for_termination (cpid
);
2162 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2163 || synch_process_termsig
!= 0)
2165 errno
= EIO
; /* We don't know why, but */
2166 return -1; /* /bin/mkdir failed */
2171 #endif /* not HAVE_MKDIR */
2177 int cpid
, status
, fd
;
2178 struct stat statbuf
;
2180 if (stat (dpath
, &statbuf
) != 0)
2182 /* Stat just set errno. We don't have to */
2186 synch_process_alive
= 1;
2187 switch (cpid
= fork ())
2190 case -1: /* Error in fork */
2191 return (-1); /* Errno is set already */
2193 case 0: /* Child process */
2194 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2201 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2202 _exit (-1); /* Can't exec /bin/rmdir */
2204 default: /* Parent process */
2205 wait_for_termination (cpid
);
2208 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2209 || synch_process_termsig
!= 0)
2211 errno
= EIO
; /* We don't know why, but */
2212 return -1; /* /bin/rmdir failed */
2217 #endif /* !HAVE_RMDIR */
2222 memset (void *b
, int n
, size_t length
)
2224 unsigned char *p
= b
;
2225 while (length
-- > 0)
2229 #endif /* !HAVE_MEMSET */
2233 memcpy (void *b1
, void *b2
, size_t length
)
2235 unsigned char *p1
= b1
, *p2
= b2
;
2236 while (length
-- > 0)
2240 #endif /* !HAVE_MEMCPY */
2242 #ifndef HAVE_MEMMOVE
2244 memmove (void *b1
, void *b2
, size_t length
)
2246 unsigned char *p1
= b1
, *p2
= b2
;
2247 if (p1
< p2
|| p1
>= p2
+ length
)
2248 while (length
-- > 0)
2254 while (length
-- > 0)
2259 #endif /* !HAVE_MEMCPY */
2263 memcmp (void *b1
, void *b2
, size_t length
)
2265 unsigned char *p1
= b1
, *p2
= b2
;
2266 while (length
-- > 0)
2268 return p1
[-1] < p2
[-1] ? -1 : 1;
2271 #endif /* !HAVE_MEMCMP */
2273 #ifndef HAVE_STRSIGNAL
2275 strsignal (int code
)
2279 if (0 <= code
&& code
< NSIG
)
2281 /* Cast to suppress warning if the table has const char *. */
2282 signame
= (char *) sys_siglist
[code
];
2287 #endif /* HAVE_STRSIGNAL */
2290 /* For make-serial-process */
2292 serial_open (char *port
)
2296 fd
= emacs_open ((char*) port
,
2309 error ("Could not open %s: %s",
2310 port
, emacs_strerror (errno
));
2313 ioctl (fd
, TIOCEXCL
, (char *) 0);
2319 #if !defined (HAVE_CFMAKERAW)
2320 /* Workaround for targets which are missing cfmakeraw. */
2321 /* Pasted from man page. */
2323 cfmakeraw (struct termios
*termios_p
)
2325 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2326 termios_p
->c_oflag
&= ~OPOST
;
2327 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2328 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2329 termios_p
->c_cflag
|= CS8
;
2331 #endif /* !defined (HAVE_CFMAKERAW */
2333 #if !defined (HAVE_CFSETSPEED)
2334 /* Workaround for targets which are missing cfsetspeed. */
2336 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2338 return (cfsetispeed (termios_p
, vitesse
)
2339 + cfsetospeed (termios_p
, vitesse
));
2343 /* For serial-process-configure */
2345 serial_configure (struct Lisp_Process
*p
,
2346 Lisp_Object contact
)
2348 Lisp_Object childp2
= Qnil
;
2349 Lisp_Object tem
= Qnil
;
2350 struct termios attr
;
2352 char summary
[4] = "???"; /* This usually becomes "8N1". */
2354 childp2
= Fcopy_sequence (p
->childp
);
2356 /* Read port attributes and prepare default configuration. */
2357 err
= tcgetattr (p
->outfd
, &attr
);
2359 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2361 #if defined (CLOCAL)
2362 attr
.c_cflag
|= CLOCAL
;
2365 attr
.c_cflag
|= CREAD
;
2368 /* Configure speed. */
2369 if (!NILP (Fplist_member (contact
, QCspeed
)))
2370 tem
= Fplist_get (contact
, QCspeed
);
2372 tem
= Fplist_get (p
->childp
, QCspeed
);
2374 err
= cfsetspeed (&attr
, XINT (tem
));
2376 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2377 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2379 /* Configure bytesize. */
2380 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2381 tem
= Fplist_get (contact
, QCbytesize
);
2383 tem
= Fplist_get (p
->childp
, QCbytesize
);
2385 tem
= make_number (8);
2387 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2388 error (":bytesize must be nil (8), 7, or 8");
2389 summary
[0] = XINT (tem
) + '0';
2390 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2391 attr
.c_cflag
&= ~CSIZE
;
2392 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2394 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2395 if (XINT (tem
) != 8)
2396 error ("Bytesize cannot be changed");
2398 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2400 /* Configure parity. */
2401 if (!NILP (Fplist_member (contact
, QCparity
)))
2402 tem
= Fplist_get (contact
, QCparity
);
2404 tem
= Fplist_get (p
->childp
, QCparity
);
2405 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2406 error (":parity must be nil (no parity), `even', or `odd'");
2407 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2408 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2409 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2414 else if (EQ (tem
, Qeven
))
2417 attr
.c_cflag
|= PARENB
;
2418 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2420 else if (EQ (tem
, Qodd
))
2423 attr
.c_cflag
|= (PARENB
| PARODD
);
2424 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2427 /* Don't error on no parity, which should be set by cfmakeraw. */
2429 error ("Parity cannot be configured");
2431 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2433 /* Configure stopbits. */
2434 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2435 tem
= Fplist_get (contact
, QCstopbits
);
2437 tem
= Fplist_get (p
->childp
, QCstopbits
);
2439 tem
= make_number (1);
2441 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2442 error (":stopbits must be nil (1 stopbit), 1, or 2");
2443 summary
[2] = XINT (tem
) + '0';
2444 #if defined (CSTOPB)
2445 attr
.c_cflag
&= ~CSTOPB
;
2446 if (XINT (tem
) == 2)
2447 attr
.c_cflag
|= CSTOPB
;
2449 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2450 if (XINT (tem
) != 1)
2451 error ("Stopbits cannot be configured");
2453 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2455 /* Configure flowcontrol. */
2456 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2457 tem
= Fplist_get (contact
, QCflowcontrol
);
2459 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2460 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2461 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2462 #if defined (CRTSCTS)
2463 attr
.c_cflag
&= ~CRTSCTS
;
2465 #if defined (CNEW_RTSCTS)
2466 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2468 #if defined (IXON) && defined (IXOFF)
2469 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2473 /* Already configured. */
2475 else if (EQ (tem
, Qhw
))
2477 #if defined (CRTSCTS)
2478 attr
.c_cflag
|= CRTSCTS
;
2479 #elif defined (CNEW_RTSCTS)
2480 attr
.c_cflag
|= CNEW_RTSCTS
;
2482 error ("Hardware flowcontrol (RTS/CTS) not supported");
2485 else if (EQ (tem
, Qsw
))
2487 #if defined (IXON) && defined (IXOFF)
2488 attr
.c_iflag
|= (IXON
| IXOFF
);
2490 error ("Software flowcontrol (XON/XOFF) not supported");
2493 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2495 /* Activate configuration. */
2496 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2498 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2500 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2501 p
->childp
= childp2
;
2504 #endif /* not DOS_NT */
2506 /* System depended enumeration of and access to system processes a-la ps(1). */
2510 /* Process enumeration and access via /proc. */
2513 list_system_processes (void)
2515 Lisp_Object procdir
, match
, proclist
, next
;
2516 struct gcpro gcpro1
, gcpro2
;
2517 register Lisp_Object tail
;
2519 GCPRO2 (procdir
, match
);
2520 /* For every process on the system, there's a directory in the
2521 "/proc" pseudo-directory whose name is the numeric ID of that
2523 procdir
= build_string ("/proc");
2524 match
= build_string ("[0-9]+");
2525 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2527 /* `proclist' gives process IDs as strings. Destructively convert
2528 each string into a number. */
2529 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2532 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2536 /* directory_files_internal returns the files in reverse order; undo
2538 proclist
= Fnreverse (proclist
);
2542 /* The WINDOWSNT implementation is in w32.c.
2543 The MSDOS implementation is in dosfns.c. */
2544 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2547 list_system_processes (void)
2552 #endif /* !defined (WINDOWSNT) */
2556 time_from_jiffies (unsigned long long tval
, long hz
,
2557 time_t *sec
, unsigned *usec
)
2559 unsigned long long ullsec
;
2563 tval
-= ullsec
* hz
;
2564 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2566 *usec
= tval
* 1000000 / hz
;
2568 *usec
= tval
/ (hz
/ 1000000);
2572 ltime_from_jiffies (unsigned long long tval
, long hz
)
2577 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2579 return list3 (make_number ((sec
>> 16) & 0xffff),
2580 make_number (sec
& 0xffff),
2581 make_number (usec
));
2585 get_up_time (time_t *sec
, unsigned *usec
)
2592 fup
= fopen ("/proc/uptime", "r");
2596 double uptime
, idletime
;
2598 /* The numbers in /proc/uptime use C-locale decimal point, but
2599 we already set ourselves to the C locale (see `fixup_locale'
2601 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2604 *usec
= (uptime
- *sec
) * 1000000;
2611 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2612 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2615 procfs_ttyname (int rdev
)
2618 char name
[PATH_MAX
];
2621 fdev
= fopen ("/proc/tty/drivers", "r");
2626 unsigned long minor_beg
, minor_end
;
2627 char minor
[25]; /* 2 32-bit numbers + dash */
2630 while (!feof (fdev
) && !ferror (fdev
))
2632 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2633 && major
== MAJOR (rdev
))
2635 minor_beg
= strtoul (minor
, &endp
, 0);
2637 minor_end
= minor_beg
;
2638 else if (*endp
== '-')
2639 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2643 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2645 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2653 return build_string (name
);
2656 static unsigned long
2657 procfs_get_total_memory (void)
2660 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2663 fmem
= fopen ("/proc/meminfo", "r");
2667 unsigned long entry_value
;
2668 char entry_name
[20]; /* the longest I saw is 13+1 */
2670 while (!feof (fmem
) && !ferror (fmem
))
2672 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2673 && strcmp (entry_name
, "MemTotal:") == 0)
2675 retval
= entry_value
;
2686 system_process_attributes (Lisp_Object pid
)
2688 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2692 long clocks_per_sec
;
2694 char procbuf
[1025], *p
, *q
;
2697 const char *cmd
= NULL
;
2698 char *cmdline
= NULL
;
2699 size_t cmdsize
= 0, cmdline_size
;
2701 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2702 unsigned long long utime
, stime
, cutime
, cstime
, start
;
2703 long priority
, nice
, rss
;
2704 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2707 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2709 Lisp_Object attrs
= Qnil
;
2710 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2711 struct gcpro gcpro1
, gcpro2
;
2712 EMACS_INT uid_eint
, gid_eint
;
2714 CHECK_NUMBER_OR_FLOAT (pid
);
2715 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2716 sprintf (procfn
, "/proc/%u", proc_id
);
2717 if (stat (procfn
, &st
) < 0)
2720 GCPRO2 (attrs
, decoded_cmd
);
2724 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2726 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2728 pw
= getpwuid (uid
);
2731 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2735 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2737 gr
= getgrgid (gid
);
2740 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2742 strcpy (fn
, procfn
);
2743 procfn_end
= fn
+ strlen (fn
);
2744 strcpy (procfn_end
, "/stat");
2745 fd
= emacs_open (fn
, O_RDONLY
, 0);
2746 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2748 procbuf
[nread
] = '\0';
2751 p
= strchr (p
, '(');
2754 q
= strrchr (p
+ 1, ')');
2769 /* Command name is encoded in locale-coding-system; decode it. */
2770 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2771 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2772 Vlocale_coding_system
, 0);
2773 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2777 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2779 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2780 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2781 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2782 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2783 &utime
, &stime
, &cutime
, &cstime
,
2784 &priority
, &nice
, &thcount
, &start
, &vsize
, &rss
);
2789 state_str
[1] = '\0';
2790 tem
= build_string (state_str
);
2791 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2793 /* Stops GCC whining about limited range of data type. */
2798 thcount_eint
= thcount
;
2799 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2800 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2801 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2802 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2803 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2804 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2805 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2806 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2807 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2808 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2809 if (clocks_per_sec
< 0)
2810 clocks_per_sec
= 100;
2811 attrs
= Fcons (Fcons (Qutime
,
2812 ltime_from_jiffies (utime
, clocks_per_sec
)),
2814 attrs
= Fcons (Fcons (Qstime
,
2815 ltime_from_jiffies (stime
, clocks_per_sec
)),
2817 attrs
= Fcons (Fcons (Qtime
,
2818 ltime_from_jiffies (stime
+utime
, clocks_per_sec
)),
2820 attrs
= Fcons (Fcons (Qcutime
,
2821 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2823 attrs
= Fcons (Fcons (Qcstime
,
2824 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2826 attrs
= Fcons (Fcons (Qctime
,
2827 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2829 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2830 attrs
= Fcons (Fcons (Qnice
, make_number (nice
)), attrs
);
2831 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2832 EMACS_GET_TIME (tnow
);
2833 get_up_time (&sec
, &usec
);
2834 EMACS_SET_SECS (telapsed
, sec
);
2835 EMACS_SET_USECS (telapsed
, usec
);
2836 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2837 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2838 EMACS_SET_SECS (tstart
, sec
);
2839 EMACS_SET_USECS (tstart
, usec
);
2840 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2841 attrs
= Fcons (Fcons (Qstart
,
2843 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2845 (EMACS_SECS (tstart
) & 0xffff),
2847 (EMACS_USECS (tstart
)))),
2849 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2850 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2851 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2852 attrs
= Fcons (Fcons (Qetime
,
2854 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2856 (EMACS_SECS (telapsed
) & 0xffff),
2858 (EMACS_USECS (telapsed
)))),
2860 time_from_jiffies (utime
+ stime
, clocks_per_sec
, &sec
, &usec
);
2861 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2864 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2865 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2868 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2875 strcpy (procfn_end
, "/cmdline");
2876 fd
= emacs_open (fn
, O_RDONLY
, 0);
2879 for (cmdline_size
= 0; emacs_read (fd
, &c
, 1) == 1; cmdline_size
++)
2881 if (isspace (c
) || c
== '\\')
2882 cmdline_size
++; /* for later quoting, see below */
2886 cmdline
= xmalloc (cmdline_size
+ 1);
2887 lseek (fd
, 0L, SEEK_SET
);
2889 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2890 cmdline
[nread
++] = '\0';
2893 /* Assigning zero to `nread' makes us skip the following
2894 two loops, assign zero to cmdline_size, and enter the
2895 following `if' clause that handles unknown command
2899 /* We don't want trailing null characters. */
2900 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2902 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2904 /* Escape-quote whitespace and backslashes. */
2905 if (isspace (*p
) || *p
== '\\')
2907 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2911 else if (*p
== '\0')
2914 cmdline_size
= nread
;
2921 cmdsize
= strlen (cmd
);
2922 cmdline_size
= cmdsize
+ 2;
2923 cmdline
= xmalloc (cmdline_size
+ 1);
2924 strcpy (cmdline
, "[");
2925 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2928 /* Command line is encoded in locale-coding-system; decode it. */
2929 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2930 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2931 Vlocale_coding_system
, 0);
2933 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2940 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2942 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2943 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2944 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2945 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2946 #undef _FILE_OFFSET_BITS
2948 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2953 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2954 #define _FILE_OFFSET_BITS 64
2955 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2958 system_process_attributes (Lisp_Object pid
)
2960 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2965 struct psinfo pinfo
;
2968 int proc_id
, uid
, gid
;
2969 Lisp_Object attrs
= Qnil
;
2970 Lisp_Object decoded_cmd
, tem
;
2971 struct gcpro gcpro1
, gcpro2
;
2972 EMACS_INT uid_eint
, gid_eint
;
2974 CHECK_NUMBER_OR_FLOAT (pid
);
2975 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2976 sprintf (procfn
, "/proc/%u", proc_id
);
2977 if (stat (procfn
, &st
) < 0)
2980 GCPRO2 (attrs
, decoded_cmd
);
2984 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2986 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2988 pw
= getpwuid (uid
);
2991 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2995 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2997 gr
= getgrgid (gid
);
3000 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3002 strcpy (fn
, procfn
);
3003 procfn_end
= fn
+ strlen (fn
);
3004 strcpy (procfn_end
, "/psinfo");
3005 fd
= emacs_open (fn
, O_RDONLY
, 0);
3007 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3009 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3010 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3011 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3015 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3016 state_str
[1] = '\0';
3017 tem
= build_string (state_str
);
3018 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3021 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3022 need to get a string from it. */
3024 /* FIXME: missing: Qtpgid */
3036 Are they available? */
3038 attrs
= Fcons (Fcons (Qtime
,
3039 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3040 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3041 make_number (pinfo
.pr_time
.tv_nsec
))),
3044 attrs
= Fcons (Fcons (Qctime
,
3045 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3046 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3047 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3050 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3051 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3052 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3054 attrs
= Fcons (Fcons (Qstart
,
3055 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3056 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3057 make_number (pinfo
.pr_start
.tv_nsec
))),
3059 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3060 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3062 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3063 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3064 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3067 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3068 strlen (pinfo
.pr_fname
)),
3069 Vlocale_coding_system
, 0);
3070 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3072 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3073 strlen (pinfo
.pr_psargs
)),
3074 Vlocale_coding_system
, 0);
3075 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3085 /* The WINDOWSNT implementation is in w32.c.
3086 The MSDOS implementation is in dosfns.c. */
3087 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3090 system_process_attributes (Lisp_Object pid
)
3095 #endif /* !defined (WINDOWSNT) */
3098 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
3099 (do not change this comment) */