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 <ignore-value.h>
37 #include "sysselect.h"
38 #include "blockinput.h"
42 #define write sys_write
47 #endif /* not WINDOWSNT */
49 #include <sys/types.h>
56 #define setpgrp setpgid
60 /* Get SI_SRPC_DOMAIN, if it is available. */
61 #ifdef HAVE_SYS_SYSTEMINFO_H
62 #include <sys/systeminfo.h>
65 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
69 #include <sys/param.h>
78 #ifdef HAVE_SYS_UTSNAME_H
79 #include <sys/utsname.h>
81 #endif /* HAVE_SYS_UTSNAME_H */
86 #include "termhooks.h"
89 #include "dispextern.h"
91 #include "cm.h" /* for reset_sys_modes */
95 /* In process.h which conflicts with the local copy. */
97 int _cdecl
_spawnlp (int, const char *, const char *, ...);
98 int _cdecl
_getpid (void);
99 extern char *getwd (char *);
102 #include "syssignal.h"
109 #ifndef HAVE_STRUCT_UTIMBUF
110 /* We want to use utime rather than utimes, but we couldn't find the
111 structure declaration. We'll use the traditional one. */
119 /* Declare here, including term.h is problematic on some systems. */
120 extern void tputs (const char *, int, int (*)(int));
122 static const int baud_convert
[] =
124 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
125 1800, 2400, 4800, 9600, 19200, 38400
128 void croak (char *) NO_RETURN
;
130 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
132 SIGMASKTYPE sigprocmask_set
;
135 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
137 /* Return the current working directory. Returns NULL on errors.
138 Any other returned value must be freed with free. This is used
139 only when get_current_dir_name is not defined on the system. */
141 get_current_dir_name (void)
145 struct stat dotstat
, pwdstat
;
146 /* If PWD is accurate, use it instead of calling getwd. PWD is
147 sometimes a nicer name, and using it may avoid a fatal error if a
148 parent directory is searchable but not readable. */
149 if ((pwd
= getenv ("PWD")) != 0
150 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
151 && stat (pwd
, &pwdstat
) == 0
152 && stat (".", &dotstat
) == 0
153 && dotstat
.st_ino
== pwdstat
.st_ino
154 && dotstat
.st_dev
== pwdstat
.st_dev
156 && strlen (pwd
) < MAXPATHLEN
160 buf
= (char *) malloc (strlen (pwd
) + 1);
168 size_t buf_size
= 1024;
169 buf
= (char *) malloc (buf_size
);
174 if (getcwd (buf
, buf_size
) == buf
)
178 int tmp_errno
= errno
;
184 buf
= (char *) realloc (buf
, buf_size
);
192 /* We need MAXPATHLEN here. */
193 buf
= (char *) malloc (MAXPATHLEN
+ 1);
196 if (getwd (buf
) == NULL
)
198 int tmp_errno
= errno
;
210 /* Discard pending input on all input descriptors. */
213 discard_tty_input (void)
216 struct emacs_tty buf
;
221 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
222 while (dos_keyread () != -1)
224 #else /* not MSDOS */
226 struct tty_display_info
*tty
;
227 for (tty
= tty_list
; tty
; tty
= tty
->next
)
229 if (tty
->input
) /* Is the device suspended? */
231 emacs_get_tty (fileno (tty
->input
), &buf
);
232 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
236 #endif /* not MSDOS */
237 #endif /* not WINDOWSNT */
243 /* Arrange for character C to be read as the next input from
245 XXX What if we have multiple ttys?
251 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
254 /* Should perhaps error if in batch mode */
256 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
257 #else /* no TIOCSTI */
258 error ("Cannot stuff terminal input characters in this version of Unix");
259 #endif /* no TIOCSTI */
265 init_baud_rate (int fd
)
275 #else /* not DOS_NT */
280 emacs_ospeed
= cfgetospeed (&sg
);
281 #endif /* not DOS_NT */
284 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
285 ? baud_convert
[emacs_ospeed
] : 9600);
292 int wait_debugging
; /* Set nonzero to make following function work under dbx
293 (at least for bsd). */
296 /* Wait for subprocess with process id `pid' to terminate and
297 make sure it will get eliminated (not remain forever as a zombie) */
300 wait_for_termination (int pid
)
304 #if defined (BSD_SYSTEM) || defined (HPUX)
305 /* Note that kill returns -1 even if the process is just a zombie now.
306 But inevitably a SIGCHLD interrupt should be generated
307 and child_sig will do wait3 and make the process go away. */
308 /* There is some indication that there is a bug involved with
309 termination of subprocesses, perhaps involving a kernel bug too,
310 but no idea what it is. Just as a hunch we signal SIGCHLD to see
311 if that causes the problem to go away or get worse. */
312 sigsetmask (sigmask (SIGCHLD
));
313 if (0 > kill (pid
, 0))
315 sigsetmask (SIGEMPTYMASK
);
316 kill (getpid (), SIGCHLD
);
322 sigpause (SIGEMPTYMASK
);
323 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
327 #else /* not WINDOWSNT */
328 sigblock (sigmask (SIGCHLD
));
330 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
332 sigunblock (sigmask (SIGCHLD
));
336 sigsuspend (&empty_mask
);
337 #endif /* not WINDOWSNT */
338 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
343 * flush any pending output
344 * (may flush input as well; it does not matter the way we use it)
348 flush_pending_output (int channel
)
350 /* FIXME: maybe this function should be removed */
353 /* Set up the terminal at the other end of a pseudo-terminal that
354 we will be controlling an inferior through.
355 It should not echo or do line-editing, since that is done
356 in Emacs. No padding needed for insertion into an Emacs buffer. */
359 child_setup_tty (int out
)
364 emacs_get_tty (out
, &s
);
365 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
366 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
368 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
369 Some versions of GNU Hurd do not have FFDLY? */
371 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
372 /* No output delays */
374 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
375 /* No output delays */
378 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
379 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
381 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
384 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
387 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
389 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
390 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
391 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
392 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
395 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
398 #ifdef SIGNALS_VIA_CHARACTERS
399 /* the QUIT and INTR character are used in process_send_signal
400 so set them here to something useful. */
401 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
402 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
403 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
404 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
405 #endif /* not SIGNALS_VIA_CHARACTERS */
408 /* Also, PTY overloads NUL and BREAK.
409 don't ignore break, but don't signal either, so it looks like NUL. */
410 s
.main
.c_iflag
&= ~IGNBRK
;
411 s
.main
.c_iflag
&= ~BRKINT
;
412 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
413 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
414 would force it to 0377. That looks like duplicated code. */
415 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
418 /* We originally enabled ICANON (and set VEOF to 04), and then had
419 proces.c send additional EOF chars to flush the output when faced
420 with long lines, but this leads to weird effects when the
421 subprocess has disabled ICANON and ends up seeing those spurious
422 extra EOFs. So we don't send EOFs any more in
423 process.c:send_process. First we tried to disable ICANON by
424 default, so if a subsprocess sets up ICANON, it's his problem (or
425 the Elisp package that talks to it) to deal with lines that are
426 too long. But this disables some features, such as the ability
427 to send EOF signals. So we re-enabled ICANON but there is no
428 more "send eof to flush" going on (which is wrong and unportable
429 in itself). The correct way to handle too much output is to
430 buffer what could not be written and then write it again when
431 select returns ok for writing. This has it own set of
432 problems. Write is now asynchronous, is that a problem? How much
433 do we buffer, and what do we do when that limit is reached? */
435 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
436 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
437 #if 0 /* These settings only apply to non-ICANON mode. */
438 s
.main
.c_cc
[VMIN
] = 1;
439 s
.main
.c_cc
[VTIME
] = 0;
442 emacs_set_tty (out
, &s
, 0);
443 #endif /* not WINDOWSNT */
445 #endif /* not MSDOS */
448 /* Record a signal code and the handler for it. */
452 SIGTYPE (*handler
) (int);
455 static void save_signal_handlers (struct save_signal
*);
456 static void restore_signal_handlers (struct save_signal
*);
458 /* Suspend the Emacs process; give terminal to its superior. */
463 #if defined (SIGTSTP) && !defined (MSDOS)
466 int pgrp
= EMACS_GETPGRP (0);
467 EMACS_KILLPG (pgrp
, SIGTSTP
);
470 #else /* No SIGTSTP */
471 /* On a system where suspending is not implemented,
472 instead fork a subshell and let it talk directly to the terminal
476 #endif /* no SIGTSTP */
479 /* Fork a subshell. */
484 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
486 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
489 struct save_signal saved_handlers
[5];
491 unsigned char *volatile str_volatile
= 0;
495 saved_handlers
[0].code
= SIGINT
;
496 saved_handlers
[1].code
= SIGQUIT
;
497 saved_handlers
[2].code
= SIGTERM
;
499 saved_handlers
[3].code
= SIGIO
;
500 saved_handlers
[4].code
= 0;
502 saved_handlers
[3].code
= 0;
505 /* Mentioning current_buffer->buffer would mean including buffer.h,
506 which somehow wedges the hp compiler. So instead... */
508 dir
= intern ("default-directory");
509 if (NILP (Fboundp (dir
)))
511 dir
= Fsymbol_value (dir
);
515 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
516 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
518 memcpy (str
, SDATA (dir
), len
);
519 if (str
[len
- 1] != '/') str
[len
++] = '/';
525 save_signal_handlers (saved_handlers
);
526 synch_process_alive
= 1;
530 error ("Can't spawn subshell");
537 #ifdef DOS_NT /* MW, Aug 1993 */
540 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
543 sh
= (char *) egetenv ("SHELL");
547 /* Use our buffer's default directory for the subshell. */
549 if (str
&& chdir ((char *) str
) != 0)
552 ignore_value (write (1, "Can't chdir\n", 12));
557 close_process_descs (); /* Close Emacs's pipes/ptys */
559 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
561 char *epwd
= getenv ("PWD");
562 char old_pwd
[MAXPATHLEN
+1+4];
564 /* If PWD is set, pass it with corrected value. */
567 strcpy (old_pwd
, epwd
);
568 if (str
[len
- 1] == '/')
570 setenv ("PWD", str
, 1);
573 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
575 putenv (old_pwd
); /* restore previous value */
577 #else /* not MSDOS */
579 /* Waits for process completion */
580 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
581 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
583 write (1, "Can't execute subshell", 22);
584 #else /* not WINDOWSNT */
585 execlp (sh
, sh
, (char *) 0);
586 ignore_value (write (1, "Can't execute subshell", 22));
588 #endif /* not WINDOWSNT */
589 #endif /* not MSDOS */
592 /* Do this now if we did not do it before. */
594 save_signal_handlers (saved_handlers
);
595 synch_process_alive
= 1;
599 wait_for_termination (pid
);
601 restore_signal_handlers (saved_handlers
);
602 synch_process_alive
= 0;
606 save_signal_handlers (struct save_signal
*saved_handlers
)
608 while (saved_handlers
->code
)
610 saved_handlers
->handler
611 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
617 restore_signal_handlers (struct save_signal
*saved_handlers
)
619 while (saved_handlers
->code
)
621 signal (saved_handlers
->code
, saved_handlers
->handler
);
627 /* If SIGIO is broken, don't do anything. */
644 unrequest_sigio (void)
651 int old_fcntl_flags
[MAXDESC
];
657 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
658 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
660 interrupts_deferred
= 0;
667 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
671 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
672 /* XXX Uhm, FASYNC is not used anymore here. */
673 /* XXX Yeah, but you need it for SIGIO, don't you? */
682 sigunblock (sigmask (SIGWINCH
));
684 sigunblock (sigmask (SIGIO
));
686 interrupts_deferred
= 0;
690 unrequest_sigio (void)
695 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
701 sigblock (sigmask (SIGWINCH
));
703 sigblock (sigmask (SIGIO
));
704 interrupts_deferred
= 1;
707 #else /* no FASYNC */
713 if (noninteractive
|| read_socket_hook
)
716 croak ("request_sigio");
720 unrequest_sigio (void)
722 if (noninteractive
|| read_socket_hook
)
725 croak ("unrequest_sigio");
734 /* Getting and setting emacs_tty structures. */
736 /* Set *TC to the parameters associated with the terminal FD.
737 Return zero if all's well, or -1 if we ran into an error we
738 couldn't deal with. */
740 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
742 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
744 /* We have those nifty POSIX tcmumbleattr functions. */
745 memset (&settings
->main
, 0, sizeof (settings
->main
));
746 if (tcgetattr (fd
, &settings
->main
) < 0)
750 /* We have survived the tempest. */
755 /* Set the parameters of the tty on FD according to the contents of
756 *SETTINGS. If FLUSHP is non-zero, we discard input.
757 Return 0 if all went well, and -1 if anything failed. */
760 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
762 /* Set the primary parameters - baud rate, character size, etcetera. */
765 /* We have those nifty POSIX tcmumbleattr functions.
766 William J. Smith <wjs@wiis.wang.com> writes:
767 "POSIX 1003.1 defines tcsetattr to return success if it was
768 able to perform any of the requested actions, even if some
769 of the requested actions could not be performed.
770 We must read settings back to ensure tty setup properly.
771 AIX requires this to keep tty from hanging occasionally." */
772 /* This make sure that we don't loop indefinitely in here. */
773 for (i
= 0 ; i
< 10 ; i
++)
774 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
785 memset (&new, 0, sizeof (new));
786 /* Get the current settings, and see if they're what we asked for. */
787 tcgetattr (fd
, &new);
788 /* We cannot use memcmp on the whole structure here because under
789 * aix386 the termios structure has some reserved field that may
792 if ( new.c_iflag
== settings
->main
.c_iflag
793 && new.c_oflag
== settings
->main
.c_oflag
794 && new.c_cflag
== settings
->main
.c_cflag
795 && new.c_lflag
== settings
->main
.c_lflag
796 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
803 /* We have survived the tempest. */
810 int old_fcntl_owner
[MAXDESC
];
811 #endif /* F_SETOWN */
813 /* This may also be defined in stdio,
814 but if so, this does no harm,
815 and using the same name avoids wasting the other one's space. */
818 unsigned char _sobuf
[BUFSIZ
+8];
823 /* Initialize the terminal mode on all tty devices that are currently
827 init_all_sys_modes (void)
829 struct tty_display_info
*tty
;
830 for (tty
= tty_list
; tty
; tty
= tty
->next
)
831 init_sys_modes (tty
);
834 /* Initialize the terminal mode on the given tty device. */
837 init_sys_modes (struct tty_display_info
*tty_out
)
839 struct emacs_tty tty
;
841 Vtty_erase_char
= Qnil
;
846 if (!tty_out
->output
)
847 return; /* The tty is suspended. */
849 if (! tty_out
->old_tty
)
850 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
852 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
854 tty
= *tty_out
->old_tty
;
856 #if !defined (DOS_NT)
857 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
859 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
860 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
861 #ifdef INLCR /* I'm just being cautious,
862 since I can't check how widespread INLCR is--rms. */
863 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
866 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
868 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
869 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
871 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
873 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
874 if (tty_out
->flow_control
)
876 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
878 tty
.main
.c_iflag
&= ~IXANY
;
882 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
883 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
885 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
887 if (tty_out
->meta_key
)
889 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
890 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
893 if (tty_out
->input
== stdin
)
895 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
896 /* Set up C-g for both SIGQUIT and SIGINT.
897 We don't know which we will get, but we handle both alike
898 so which one it really gives us does not matter. */
899 tty
.main
.c_cc
[VQUIT
] = quit_char
;
903 /* We normally don't get interrupt or quit signals from tty
904 devices other than our controlling terminal; therefore,
905 we must handle C-g as normal input. Unfortunately, this
906 means that the interrupt and quit feature must be
907 disabled on secondary ttys, or we would not even see the
910 Note that even though emacsclient could have special code
911 to pass SIGINT to Emacs, we should _not_ enable
912 interrupt/quit keys for emacsclient frames. This means
913 that we can't break out of loops in C code from a
914 secondary tty frame, but we can always decide what
915 display the C-g came from, which is more important from a
916 usability point of view. (Consider the case when two
917 people work together using the same Emacs instance.) */
918 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
919 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
921 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
922 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
924 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
929 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
932 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
934 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
935 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
938 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
941 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
942 #endif /* VREPRINT */
944 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
947 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
948 #endif /* VDISCARD */
950 if (tty_out
->flow_control
)
953 tty
.main
.c_cc
[VSTART
] = '\021';
956 tty
.main
.c_cc
[VSTOP
] = '\023';
962 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
965 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
970 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
971 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
972 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
973 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
974 if (tty_out
->flow_control
)
977 tty
.main
.c_cc
[VSTART
] = '\021';
980 tty
.main
.c_cc
[VSTOP
] = '\023';
983 /* Also, PTY overloads NUL and BREAK.
984 don't ignore break, but don't signal either, so it looks like NUL.
985 This really serves a purpose only if running in an XTERM window
986 or via TELNET or the like, but does no harm elsewhere. */
987 tty
.main
.c_iflag
&= ~IGNBRK
;
988 tty
.main
.c_iflag
&= ~BRKINT
;
990 #endif /* not DOS_NT */
992 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
993 if (!tty_out
->term_initted
)
994 internal_terminal_init ();
998 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1000 /* This code added to insure that, if flow-control is not to be used,
1001 we have an unlocked terminal at the start. */
1004 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1007 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1010 #if !defined (DOS_NT)
1012 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1017 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1018 if (interrupt_input
)
1020 old_fcntl_owner
[fileno (tty_out
->input
)] =
1021 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1022 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1023 init_sigio (fileno (tty_out
->input
));
1025 if (gpm_tty
== tty_out
)
1027 /* Arrange for mouse events to give us SIGIO signals. */
1028 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1029 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1030 init_sigio (gpm_fd
);
1032 #endif /* HAVE_GPM */
1034 #endif /* F_GETOWN */
1035 #endif /* F_SETFL */
1038 /* This symbol is defined on recent USG systems.
1039 Someone says without this call USG won't really buffer the file
1040 even with a call to setbuf. */
1041 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1043 setbuf (tty_out
->output
, (char *) _sobuf
);
1046 if (tty_out
->terminal
->set_terminal_modes_hook
)
1047 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1049 if (!tty_out
->term_initted
)
1051 Lisp_Object tail
, frame
;
1052 FOR_EACH_FRAME (tail
, frame
)
1054 /* XXX This needs to be revised. */
1055 if (FRAME_TERMCAP_P (XFRAME (frame
))
1056 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1057 init_frame_faces (XFRAME (frame
));
1061 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1063 /* We used to call "direct_output_forward_char(0)" here,
1064 but it's not clear why, since it may not do anything anyway. */
1068 Lisp_Object tail
, frame
;
1070 FOR_EACH_FRAME (tail
, frame
)
1072 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1073 || FRAME_MSDOS_P (XFRAME (frame
)))
1074 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1075 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1079 tty_out
->term_initted
= 1;
1082 /* Return nonzero if safe to use tabs in output.
1083 At the time this is called, init_sys_modes has not been done yet. */
1086 tabs_safe_p (int fd
)
1088 struct emacs_tty etty
;
1090 emacs_get_tty (fd
, &etty
);
1093 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1094 #else /* not TABDLY */
1096 #endif /* not TABDLY */
1102 /* Get terminal size from system.
1103 Store number of lines into *HEIGHTP and width into *WIDTHP.
1104 We store 0 if there's no valid information. */
1107 get_tty_size (int fd
, int *widthp
, int *heightp
)
1113 struct winsize size
;
1115 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1116 *widthp
= *heightp
= 0;
1119 *widthp
= size
.ws_col
;
1120 *heightp
= size
.ws_row
;
1126 /* SunOS - style. */
1127 struct ttysize size
;
1129 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1130 *widthp
= *heightp
= 0;
1133 *widthp
= size
.ts_cols
;
1134 *heightp
= size
.ts_lines
;
1139 *widthp
= ScreenCols ();
1140 *heightp
= ScreenRows ();
1141 #else /* system doesn't know size */
1145 #endif /* not SunOS-style */
1146 #endif /* not BSD-style */
1149 /* Set the logical window size associated with descriptor FD
1150 to HEIGHT and WIDTH. This is used mainly with ptys. */
1153 set_window_size (int fd
, int height
, int width
)
1158 struct winsize size
;
1159 size
.ws_row
= height
;
1160 size
.ws_col
= width
;
1162 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1163 return 0; /* error */
1170 /* SunOS - style. */
1171 struct ttysize size
;
1172 size
.ts_lines
= height
;
1173 size
.ts_cols
= width
;
1175 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1181 #endif /* not SunOS-style */
1182 #endif /* not BSD-style */
1187 /* Prepare all terminal devices for exiting Emacs. */
1190 reset_all_sys_modes (void)
1192 struct tty_display_info
*tty
;
1193 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1194 reset_sys_modes (tty
);
1197 /* Prepare the terminal for closing it; move the cursor to the
1198 bottom of the frame, turn off interrupt-driven I/O, etc. */
1201 reset_sys_modes (struct tty_display_info
*tty_out
)
1208 if (!tty_out
->term_initted
)
1211 if (!tty_out
->output
)
1212 return; /* The tty is suspended. */
1214 /* Go to and clear the last line of the terminal. */
1216 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1218 /* Code adapted from tty_clear_end_of_line. */
1219 if (tty_out
->TS_clr_line
)
1221 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1224 { /* have to do it the hard way */
1226 tty_turn_off_insert (tty_out
);
1228 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1230 fputc (' ', tty_out
->output
);
1234 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1235 fflush (tty_out
->output
);
1237 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1238 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1241 /* Avoid possible loss of output when changing terminal modes. */
1242 fsync (fileno (tty_out
->output
));
1246 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1247 if (interrupt_input
)
1249 reset_sigio (fileno (tty_out
->input
));
1250 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1251 old_fcntl_owner
[fileno (tty_out
->input
)]);
1253 #endif /* F_SETOWN */
1255 fcntl (fileno (tty_out
->input
), F_SETFL
,
1256 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1258 #endif /* F_SETFL */
1260 if (tty_out
->old_tty
)
1261 while (emacs_set_tty (fileno (tty_out
->input
),
1262 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1265 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1273 /* Set up the proper status flags for use of a pty. */
1278 /* I'm told that TOICREMOTE does not mean control chars
1279 "can't be sent" but rather that they don't have
1280 input-editing or signaling effects.
1281 That should be good, because we have other ways
1282 to do those things in Emacs.
1283 However, telnet mode seems not to work on 4.2.
1284 So TIOCREMOTE is turned off now. */
1286 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1287 will hang. In particular, the "timeout" feature (which
1288 causes a read to return if there is no data available)
1289 does this. Also it is known that telnet mode will hang
1290 in such a way that Emacs must be stopped (perhaps this
1291 is the same problem).
1293 If TIOCREMOTE is turned off, then there is a bug in
1294 hp-ux which sometimes loses data. Apparently the
1295 code which blocks the master process when the internal
1296 buffer fills up does not work. Other than this,
1297 though, everything else seems to work fine.
1299 Since the latter lossage is more benign, we may as well
1300 lose that way. -- cph */
1302 #if defined(UNIX98_PTYS)
1305 ioctl (fd
, FIONBIO
, &on
);
1310 #endif /* HAVE_PTYS */
1313 #include <sys/socket.h>
1315 #endif /* HAVE_SOCKETS */
1318 #ifndef HAVE_H_ERRNO
1321 #endif /* TRY_AGAIN */
1324 init_system_name (void)
1326 #ifndef HAVE_GETHOSTNAME
1329 Vsystem_name
= build_string (uts
.nodename
);
1330 #else /* HAVE_GETHOSTNAME */
1331 unsigned int hostname_size
= 256;
1332 char *hostname
= (char *) alloca (hostname_size
);
1334 /* Try to get the host name; if the buffer is too short, try
1335 again. Apparently, the only indication gethostname gives of
1336 whether the buffer was large enough is the presence or absence
1337 of a '\0' in the string. Eech. */
1340 gethostname (hostname
, hostname_size
- 1);
1341 hostname
[hostname_size
- 1] = '\0';
1343 /* Was the buffer large enough for the '\0'? */
1344 if (strlen (hostname
) < hostname_size
- 1)
1347 hostname_size
<<= 1;
1348 hostname
= (char *) alloca (hostname_size
);
1351 /* Turn the hostname into the official, fully-qualified hostname.
1352 Don't do this if we're going to dump; this can confuse system
1353 libraries on some machines and make the dumped emacs core dump. */
1356 #endif /* not CANNOT_DUMP */
1357 if (! strchr (hostname
, '.'))
1360 #ifdef HAVE_GETADDRINFO
1361 struct addrinfo
*res
;
1362 struct addrinfo hints
;
1365 memset (&hints
, 0, sizeof (hints
));
1366 hints
.ai_socktype
= SOCK_STREAM
;
1367 hints
.ai_flags
= AI_CANONNAME
;
1369 for (count
= 0;; count
++)
1371 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1372 || ret
!= EAI_AGAIN
)
1377 Fsleep_for (make_number (1), Qnil
);
1382 struct addrinfo
*it
= res
;
1385 char *fqdn
= it
->ai_canonname
;
1386 if (fqdn
&& strchr (fqdn
, '.')
1387 && strcmp (fqdn
, "localhost.localdomain") != 0)
1393 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1394 strcpy (hostname
, it
->ai_canonname
);
1398 #else /* !HAVE_GETADDRINFO */
1400 for (count
= 0;; count
++)
1406 hp
= gethostbyname (hostname
);
1408 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1415 Fsleep_for (make_number (1), Qnil
);
1420 char *fqdn
= (char *) hp
->h_name
;
1422 if (!strchr (fqdn
, '.'))
1424 /* We still don't have a fully qualified domain name.
1425 Try to find one in the list of alternate names */
1426 char **alias
= hp
->h_aliases
;
1428 && (!strchr (*alias
, '.')
1429 || !strcmp (*alias
, "localhost.localdomain")))
1436 #endif /* !HAVE_GETADDRINFO */
1438 #endif /* HAVE_SOCKETS */
1439 Vsystem_name
= build_string (hostname
);
1440 #endif /* HAVE_GETHOSTNAME */
1443 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1444 if (*p
== ' ' || *p
== '\t')
1449 /* POSIX signals support - DJB */
1450 /* Anyone with POSIX signals should have ANSI C declarations */
1452 sigset_t empty_mask
, full_mask
;
1457 sys_signal (int signal_number
, signal_handler_t action
)
1459 struct sigaction new_action
, old_action
;
1460 sigemptyset (&new_action
.sa_mask
);
1461 new_action
.sa_handler
= action
;
1462 new_action
.sa_flags
= 0;
1463 #if defined (SA_RESTART)
1464 /* Emacs mostly works better with restartable system services. If this
1465 flag exists, we probably want to turn it on here.
1466 However, on some systems this resets the timeout of `select'
1467 which means that `select' never finishes if it keeps getting signals.
1468 BROKEN_SA_RESTART is defined on those systems. */
1469 /* It's not clear why the comment above says "mostly works better". --Stef
1470 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1471 for pending input so we need long-running syscalls to be interrupted
1472 after a signal that sets the interrupt_input_pending flag. */
1473 /* Non-interactive keyboard input goes through stdio, where we always
1474 want restartable system calls. */
1475 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1478 new_action
.sa_flags
= SA_RESTART
;
1480 sigaction (signal_number
, &new_action
, &old_action
);
1481 return (old_action
.sa_handler
);
1484 #endif /* WINDOWSNT */
1487 /* If we're compiling with GCC, we don't need this function, since it
1488 can be written as a macro. */
1490 sys_sigmask (int sig
)
1493 sigemptyset (&mask
);
1494 sigaddset (&mask
, sig
);
1499 /* I'd like to have these guys return pointers to the mask storage in here,
1500 but there'd be trouble if the code was saving multiple masks. I'll be
1501 safe and pass the structure. It normally won't be more than 2 bytes
1505 sys_sigblock (sigset_t new_mask
)
1508 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1513 sys_sigunblock (sigset_t new_mask
)
1516 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1521 sys_sigsetmask (sigset_t new_mask
)
1524 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1529 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1530 static char *my_sys_siglist
[NSIG
];
1534 # define sys_siglist my_sys_siglist
1540 sigemptyset (&empty_mask
);
1541 sigfillset (&full_mask
);
1543 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1547 sys_siglist
[SIGABRT
] = "Aborted";
1550 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1553 sys_siglist
[SIGALRM
] = "Alarm clock";
1556 sys_siglist
[SIGBUS
] = "Bus error";
1559 sys_siglist
[SIGCLD
] = "Child status changed";
1562 sys_siglist
[SIGCHLD
] = "Child status changed";
1565 sys_siglist
[SIGCONT
] = "Continued";
1568 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1571 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1574 sys_siglist
[SIGEMT
] = "Emulation trap";
1577 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1580 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1583 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1586 sys_siglist
[SIGHUP
] = "Hangup";
1589 sys_siglist
[SIGILL
] = "Illegal instruction";
1592 sys_siglist
[SIGINT
] = "Interrupt";
1595 sys_siglist
[SIGIO
] = "I/O possible";
1598 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1601 sys_siglist
[SIGIOT
] = "IOT trap";
1604 sys_siglist
[SIGKILL
] = "Killed";
1607 sys_siglist
[SIGLOST
] = "Resource lost";
1610 sys_siglist
[SIGLWP
] = "SIGLWP";
1613 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1616 sys_siglist
[SIGWIND
] = "SIGPHONE";
1619 sys_siglist
[SIGPIPE
] = "Broken pipe";
1622 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1625 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1628 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1631 sys_siglist
[SIGPWR
] = "Power-fail restart";
1634 sys_siglist
[SIGQUIT
] = "Quit";
1637 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1640 sys_siglist
[SIGSAK
] = "Secure attention";
1643 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1646 sys_siglist
[SIGSOUND
] = "Sound completed";
1649 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1652 sys_siglist
[SIGSTP
] = "Stopped (user)";
1655 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1658 sys_siglist
[SIGTERM
] = "Terminated";
1661 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1664 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1667 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1670 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1673 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1676 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1679 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1682 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1685 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1688 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1691 sys_siglist
[SIGWINCH
] = "Window size changed";
1694 sys_siglist
[SIGWIND
] = "SIGWIND";
1697 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1700 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1703 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1712 /* Figure out how many bits the system's random number generator uses.
1713 `random' and `lrand48' are assumed to return 31 usable bits.
1714 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1715 so we'll shift it and treat it like the 15-bit USG `rand'. */
1719 # define RAND_BITS 31
1720 # else /* !HAVE_RANDOM */
1721 # ifdef HAVE_LRAND48
1722 # define RAND_BITS 31
1723 # define random lrand48
1724 # else /* !HAVE_LRAND48 */
1725 # define RAND_BITS 15
1726 # if RAND_MAX == 32767
1727 # define random rand
1728 # else /* RAND_MAX != 32767 */
1729 # if RAND_MAX == 2147483647
1730 # define random() (rand () >> 16)
1731 # else /* RAND_MAX != 2147483647 */
1733 # define random rand
1735 # define random() (rand () >> 16)
1737 # endif /* RAND_MAX != 2147483647 */
1738 # endif /* RAND_MAX != 32767 */
1739 # endif /* !HAVE_LRAND48 */
1740 # endif /* !HAVE_RANDOM */
1741 #endif /* !RAND_BITS */
1744 seed_random (long int arg
)
1747 srandom ((unsigned int)arg
);
1749 # ifdef HAVE_LRAND48
1752 srand ((unsigned int)arg
);
1758 * Build a full Emacs-sized word out of whatever we've got.
1759 * This suffices even for a 64-bit architecture with a 15-bit rand.
1764 long val
= random ();
1765 #if VALBITS > RAND_BITS
1766 val
= (val
<< RAND_BITS
) ^ random ();
1767 #if VALBITS > 2*RAND_BITS
1768 val
= (val
<< RAND_BITS
) ^ random ();
1769 #if VALBITS > 3*RAND_BITS
1770 val
= (val
<< RAND_BITS
) ^ random ();
1771 #if VALBITS > 4*RAND_BITS
1772 val
= (val
<< RAND_BITS
) ^ random ();
1773 #endif /* need at least 5 */
1774 #endif /* need at least 4 */
1775 #endif /* need at least 3 */
1776 #endif /* need at least 2 */
1777 return val
& ((1L << VALBITS
) - 1);
1780 #ifndef HAVE_STRERROR
1786 extern char *sys_errlist
[];
1787 extern int sys_nerr
;
1789 if (errnum
>= 0 && errnum
< sys_nerr
)
1790 return sys_errlist
[errnum
];
1791 return (char *) "Unknown error";
1793 #endif /* not WINDOWSNT */
1794 #endif /* ! HAVE_STRERROR */
1797 emacs_open (const char *path
, int oflag
, int mode
)
1799 register int rtnval
;
1801 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1802 && (errno
== EINTR
))
1808 emacs_close (int fd
)
1811 register int rtnval
;
1813 while ((rtnval
= close (fd
)) == -1
1814 && (errno
== EINTR
))
1817 /* If close is interrupted SunOS 4.1 may or may not have closed the
1818 file descriptor. If it did the second close will fail with
1819 errno = EBADF. That means we have succeeded. */
1820 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1827 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1829 register int rtnval
;
1831 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1832 && (errno
== EINTR
))
1838 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1840 register int rtnval
, bytes_written
;
1846 rtnval
= write (fildes
, buf
, nbyte
);
1853 /* I originally used `QUIT' but that might causes files to
1854 be truncated if you hit C-g in the middle of it. --Stef */
1855 process_pending_signals ();
1860 return (bytes_written
? bytes_written
: -1);
1865 bytes_written
+= rtnval
;
1867 return (bytes_written
);
1872 * All of the following are for USG.
1874 * On USG systems the system calls are INTERRUPTIBLE by signals
1875 * that the user program has elected to catch. Thus the system call
1876 * must be retried in these cases. To handle this without massive
1877 * changes in the source code, we remap the standard system call names
1878 * to names for our own functions in sysdep.c that do the system call
1879 * with retries. Actually, for portability reasons, it is good
1880 * programming practice, as this example shows, to limit all actual
1881 * system calls to a single occurrence in the source. Sure, this
1882 * adds an extra level of function call overhead but it is almost
1883 * always negligible. Fred Fish, Unisoft Systems Inc.
1887 * Warning, this function may not duplicate 4.2 action properly
1888 * under error conditions.
1894 /* In 4.1, param.h fails to define this. */
1895 #define MAXPATHLEN 1024
1899 getwd (char *pathname
)
1901 char *npath
, *spath
;
1902 extern char *getcwd (char *, size_t);
1904 BLOCK_INPUT
; /* getcwd uses malloc */
1905 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1911 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1912 up to first slash. Should be harmless on other systems. */
1913 while (*npath
&& *npath
!= '/')
1915 strcpy (pathname
, npath
);
1916 free (spath
); /* getcwd uses malloc */
1921 #endif /* HAVE_GETWD */
1924 * Emulate rename using unlink/link. Note that this is
1925 * only partially correct. Also, doesn't enforce restriction
1926 * that files be of same type (regular->regular, dir->dir, etc).
1932 rename (const char *from
, const char *to
)
1934 if (access (from
, 0) == 0)
1937 if (link (from
, to
) == 0)
1938 if (unlink (from
) == 0)
1947 #if defined(HPUX) && !defined(HAVE_PERROR)
1949 /* HPUX curses library references perror, but as far as we know
1950 it won't be called. Anyway this definition will do for now. */
1956 #endif /* HPUX and not HAVE_PERROR */
1961 * Emulate BSD dup2. First close newd if it already exists.
1962 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1963 * until we are, then close the unsuccessful ones.
1967 dup2 (int oldd
, int newd
)
1969 register int fd
, ret
;
1974 return fcntl (oldd
, F_DUPFD
, newd
);
1981 ret
= dup2 (old
,new);
1987 #endif /* not HAVE_DUP2 */
1990 * Gettimeofday. Simulate as much as possible. Only accurate
1991 * to nearest second. Emacs doesn't use tzp so ignore it for now.
1992 * Only needed when subprocesses are defined.
1995 #ifndef HAVE_GETTIMEOFDAY
1999 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2001 extern long time (long);
2003 tp
->tv_sec
= time ((long *)0);
2006 tzp
->tz_minuteswest
= -1;
2011 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2014 * This function will go away as soon as all the stubs fixed. (fnf)
2018 croak (char *badfunc
)
2020 printf ("%s not yet implemented\r\n", badfunc
);
2021 reset_all_sys_modes ();
2027 /* Directory routines for systems that don't have them. */
2029 #ifdef HAVE_DIRENT_H
2033 #if !defined (HAVE_CLOSEDIR)
2036 closedir (DIR *dirp
/* stream from opendir */)
2040 rtnval
= emacs_close (dirp
->dd_fd
);
2041 xfree ((char *) dirp
);
2045 #endif /* not HAVE_CLOSEDIR */
2046 #endif /* HAVE_DIRENT_H */
2050 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2053 struct timeval tv
[2];
2056 return utimes (filename
, tv
);
2057 #else /* not HAVE_UTIMES */
2059 utb
.actime
= EMACS_SECS (atime
);
2060 utb
.modtime
= EMACS_SECS (mtime
);
2061 return utime (filename
, &utb
);
2062 #endif /* not HAVE_UTIMES */
2065 /* mkdir and rmdir functions, for systems which don't have them. */
2069 * Written by Robert Rother, Mariah Corporation, August 1985.
2071 * If you want it, it's yours. All I ask in return is that if you
2072 * figure out how to do this in a Bourne Shell script you send me
2074 * sdcsvax!rmr or rmr@uscd
2076 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2077 * subroutine. 11Mar86; hoptoad!gnu
2079 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2080 * subroutine didn't return EEXIST. It does now.
2087 mkdir (char *dpath
, int dmode
)
2089 int cpid
, status
, fd
;
2090 struct stat statbuf
;
2092 if (stat (dpath
, &statbuf
) == 0)
2094 errno
= EEXIST
; /* Stat worked, so it already exists */
2098 /* If stat fails for a reason other than non-existence, return error */
2099 if (errno
!= ENOENT
)
2102 synch_process_alive
= 1;
2103 switch (cpid
= fork ())
2106 case -1: /* Error in fork */
2107 return (-1); /* Errno is set already */
2109 case 0: /* Child process */
2111 * Cheap hack to set mode of new directory. Since this
2112 * child process is going away anyway, we zap its umask.
2113 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2114 * directory. Does anybody care?
2116 status
= umask (0); /* Get current umask */
2117 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2118 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2125 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2126 _exit (-1); /* Can't exec /bin/mkdir */
2128 default: /* Parent process */
2129 wait_for_termination (cpid
);
2132 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2133 || synch_process_termsig
!= 0)
2135 errno
= EIO
; /* We don't know why, but */
2136 return -1; /* /bin/mkdir failed */
2141 #endif /* not HAVE_MKDIR */
2147 int cpid
, status
, fd
;
2148 struct stat statbuf
;
2150 if (stat (dpath
, &statbuf
) != 0)
2152 /* Stat just set errno. We don't have to */
2156 synch_process_alive
= 1;
2157 switch (cpid
= fork ())
2160 case -1: /* Error in fork */
2161 return (-1); /* Errno is set already */
2163 case 0: /* Child process */
2164 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2171 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2172 _exit (-1); /* Can't exec /bin/rmdir */
2174 default: /* Parent process */
2175 wait_for_termination (cpid
);
2178 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2179 || synch_process_termsig
!= 0)
2181 errno
= EIO
; /* We don't know why, but */
2182 return -1; /* /bin/rmdir failed */
2187 #endif /* !HAVE_RMDIR */
2192 memset (void *b
, int n
, size_t length
)
2194 unsigned char *p
= b
;
2195 while (length
-- > 0)
2199 #endif /* !HAVE_MEMSET */
2203 memcpy (void *b1
, void *b2
, size_t length
)
2205 unsigned char *p1
= b1
, *p2
= b2
;
2206 while (length
-- > 0)
2210 #endif /* !HAVE_MEMCPY */
2212 #ifndef HAVE_MEMMOVE
2214 memmove (void *b1
, void *b2
, size_t length
)
2216 unsigned char *p1
= b1
, *p2
= b2
;
2217 if (p1
< p2
|| p1
>= p2
+ length
)
2218 while (length
-- > 0)
2224 while (length
-- > 0)
2229 #endif /* !HAVE_MEMCPY */
2233 memcmp (void *b1
, void *b2
, size_t length
)
2235 unsigned char *p1
= b1
, *p2
= b2
;
2236 while (length
-- > 0)
2238 return p1
[-1] < p2
[-1] ? -1 : 1;
2241 #endif /* !HAVE_MEMCMP */
2243 #ifndef HAVE_STRSIGNAL
2245 strsignal (int code
)
2249 if (0 <= code
&& code
< NSIG
)
2251 /* Cast to suppress warning if the table has const char *. */
2252 signame
= (char *) sys_siglist
[code
];
2257 #endif /* HAVE_STRSIGNAL */
2260 /* For make-serial-process */
2262 serial_open (char *port
)
2266 fd
= emacs_open ((char*) port
,
2279 error ("Could not open %s: %s",
2280 port
, emacs_strerror (errno
));
2283 ioctl (fd
, TIOCEXCL
, (char *) 0);
2289 #if !defined (HAVE_CFMAKERAW)
2290 /* Workaround for targets which are missing cfmakeraw. */
2291 /* Pasted from man page. */
2293 cfmakeraw (struct termios
*termios_p
)
2295 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2296 termios_p
->c_oflag
&= ~OPOST
;
2297 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2298 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2299 termios_p
->c_cflag
|= CS8
;
2301 #endif /* !defined (HAVE_CFMAKERAW */
2303 #if !defined (HAVE_CFSETSPEED)
2304 /* Workaround for targets which are missing cfsetspeed. */
2306 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2308 return (cfsetispeed (termios_p
, vitesse
)
2309 + cfsetospeed (termios_p
, vitesse
));
2313 /* For serial-process-configure */
2315 serial_configure (struct Lisp_Process
*p
,
2316 Lisp_Object contact
)
2318 Lisp_Object childp2
= Qnil
;
2319 Lisp_Object tem
= Qnil
;
2320 struct termios attr
;
2322 char summary
[4] = "???"; /* This usually becomes "8N1". */
2324 childp2
= Fcopy_sequence (p
->childp
);
2326 /* Read port attributes and prepare default configuration. */
2327 err
= tcgetattr (p
->outfd
, &attr
);
2329 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2331 #if defined (CLOCAL)
2332 attr
.c_cflag
|= CLOCAL
;
2335 attr
.c_cflag
|= CREAD
;
2338 /* Configure speed. */
2339 if (!NILP (Fplist_member (contact
, QCspeed
)))
2340 tem
= Fplist_get (contact
, QCspeed
);
2342 tem
= Fplist_get (p
->childp
, QCspeed
);
2344 err
= cfsetspeed (&attr
, XINT (tem
));
2346 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2347 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2349 /* Configure bytesize. */
2350 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2351 tem
= Fplist_get (contact
, QCbytesize
);
2353 tem
= Fplist_get (p
->childp
, QCbytesize
);
2355 tem
= make_number (8);
2357 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2358 error (":bytesize must be nil (8), 7, or 8");
2359 summary
[0] = XINT (tem
) + '0';
2360 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2361 attr
.c_cflag
&= ~CSIZE
;
2362 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2364 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2365 if (XINT (tem
) != 8)
2366 error ("Bytesize cannot be changed");
2368 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2370 /* Configure parity. */
2371 if (!NILP (Fplist_member (contact
, QCparity
)))
2372 tem
= Fplist_get (contact
, QCparity
);
2374 tem
= Fplist_get (p
->childp
, QCparity
);
2375 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2376 error (":parity must be nil (no parity), `even', or `odd'");
2377 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2378 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2379 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2384 else if (EQ (tem
, Qeven
))
2387 attr
.c_cflag
|= PARENB
;
2388 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2390 else if (EQ (tem
, Qodd
))
2393 attr
.c_cflag
|= (PARENB
| PARODD
);
2394 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2397 /* Don't error on no parity, which should be set by cfmakeraw. */
2399 error ("Parity cannot be configured");
2401 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2403 /* Configure stopbits. */
2404 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2405 tem
= Fplist_get (contact
, QCstopbits
);
2407 tem
= Fplist_get (p
->childp
, QCstopbits
);
2409 tem
= make_number (1);
2411 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2412 error (":stopbits must be nil (1 stopbit), 1, or 2");
2413 summary
[2] = XINT (tem
) + '0';
2414 #if defined (CSTOPB)
2415 attr
.c_cflag
&= ~CSTOPB
;
2416 if (XINT (tem
) == 2)
2417 attr
.c_cflag
|= CSTOPB
;
2419 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2420 if (XINT (tem
) != 1)
2421 error ("Stopbits cannot be configured");
2423 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2425 /* Configure flowcontrol. */
2426 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2427 tem
= Fplist_get (contact
, QCflowcontrol
);
2429 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2430 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2431 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2432 #if defined (CRTSCTS)
2433 attr
.c_cflag
&= ~CRTSCTS
;
2435 #if defined (CNEW_RTSCTS)
2436 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2438 #if defined (IXON) && defined (IXOFF)
2439 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2443 /* Already configured. */
2445 else if (EQ (tem
, Qhw
))
2447 #if defined (CRTSCTS)
2448 attr
.c_cflag
|= CRTSCTS
;
2449 #elif defined (CNEW_RTSCTS)
2450 attr
.c_cflag
|= CNEW_RTSCTS
;
2452 error ("Hardware flowcontrol (RTS/CTS) not supported");
2455 else if (EQ (tem
, Qsw
))
2457 #if defined (IXON) && defined (IXOFF)
2458 attr
.c_iflag
|= (IXON
| IXOFF
);
2460 error ("Software flowcontrol (XON/XOFF) not supported");
2463 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2465 /* Activate configuration. */
2466 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2468 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2470 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2471 p
->childp
= childp2
;
2474 #endif /* not DOS_NT */
2476 /* System depended enumeration of and access to system processes a-la ps(1). */
2480 /* Process enumeration and access via /proc. */
2483 list_system_processes (void)
2485 Lisp_Object procdir
, match
, proclist
, next
;
2486 struct gcpro gcpro1
, gcpro2
;
2487 register Lisp_Object tail
;
2489 GCPRO2 (procdir
, match
);
2490 /* For every process on the system, there's a directory in the
2491 "/proc" pseudo-directory whose name is the numeric ID of that
2493 procdir
= build_string ("/proc");
2494 match
= build_string ("[0-9]+");
2495 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2497 /* `proclist' gives process IDs as strings. Destructively convert
2498 each string into a number. */
2499 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2502 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2506 /* directory_files_internal returns the files in reverse order; undo
2508 proclist
= Fnreverse (proclist
);
2512 /* The WINDOWSNT implementation is in w32.c.
2513 The MSDOS implementation is in dosfns.c. */
2514 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2517 list_system_processes (void)
2522 #endif /* !defined (WINDOWSNT) */
2526 time_from_jiffies (unsigned long long tval
, long hz
,
2527 time_t *sec
, unsigned *usec
)
2529 unsigned long long ullsec
;
2533 tval
-= ullsec
* hz
;
2534 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2536 *usec
= tval
* 1000000 / hz
;
2538 *usec
= tval
/ (hz
/ 1000000);
2542 ltime_from_jiffies (unsigned long long tval
, long hz
)
2547 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2549 return list3 (make_number ((sec
>> 16) & 0xffff),
2550 make_number (sec
& 0xffff),
2551 make_number (usec
));
2555 get_up_time (time_t *sec
, unsigned *usec
)
2562 fup
= fopen ("/proc/uptime", "r");
2566 double uptime
, idletime
;
2568 /* The numbers in /proc/uptime use C-locale decimal point, but
2569 we already set ourselves to the C locale (see `fixup_locale'
2571 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2574 *usec
= (uptime
- *sec
) * 1000000;
2581 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2582 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2585 procfs_ttyname (int rdev
)
2588 char name
[PATH_MAX
];
2591 fdev
= fopen ("/proc/tty/drivers", "r");
2596 unsigned long minor_beg
, minor_end
;
2597 char minor
[25]; /* 2 32-bit numbers + dash */
2600 while (!feof (fdev
) && !ferror (fdev
))
2602 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2603 && major
== MAJOR (rdev
))
2605 minor_beg
= strtoul (minor
, &endp
, 0);
2607 minor_end
= minor_beg
;
2608 else if (*endp
== '-')
2609 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2613 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2615 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2623 return build_string (name
);
2626 static unsigned long
2627 procfs_get_total_memory (void)
2630 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2633 fmem
= fopen ("/proc/meminfo", "r");
2637 unsigned long entry_value
;
2638 char entry_name
[20]; /* the longest I saw is 13+1 */
2640 while (!feof (fmem
) && !ferror (fmem
))
2642 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2643 && strcmp (entry_name
, "MemTotal:") == 0)
2645 retval
= entry_value
;
2656 system_process_attributes (Lisp_Object pid
)
2658 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2662 long clocks_per_sec
;
2664 char procbuf
[1025], *p
, *q
;
2667 const char *cmd
= NULL
;
2668 char *cmdline
= NULL
;
2669 size_t cmdsize
= 0, cmdline_size
;
2671 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2672 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2673 long priority
, niceness
, rss
;
2674 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2677 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2679 Lisp_Object attrs
= Qnil
;
2680 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2681 struct gcpro gcpro1
, gcpro2
;
2682 EMACS_INT uid_eint
, gid_eint
;
2684 CHECK_NUMBER_OR_FLOAT (pid
);
2685 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2686 sprintf (procfn
, "/proc/%u", proc_id
);
2687 if (stat (procfn
, &st
) < 0)
2690 GCPRO2 (attrs
, decoded_cmd
);
2694 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2696 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2698 pw
= getpwuid (uid
);
2701 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2705 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2707 gr
= getgrgid (gid
);
2710 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2712 strcpy (fn
, procfn
);
2713 procfn_end
= fn
+ strlen (fn
);
2714 strcpy (procfn_end
, "/stat");
2715 fd
= emacs_open (fn
, O_RDONLY
, 0);
2716 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2718 procbuf
[nread
] = '\0';
2721 p
= strchr (p
, '(');
2724 q
= strrchr (p
+ 1, ')');
2739 /* Command name is encoded in locale-coding-system; decode it. */
2740 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2741 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2742 Vlocale_coding_system
, 0);
2743 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2747 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2749 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2750 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2751 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2752 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2753 &u_time
, &s_time
, &cutime
, &cstime
,
2754 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2759 state_str
[1] = '\0';
2760 tem
= build_string (state_str
);
2761 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2763 /* Stops GCC whining about limited range of data type. */
2768 thcount_eint
= thcount
;
2769 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2770 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2771 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2772 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2773 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2774 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2775 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2776 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2777 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2778 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2779 if (clocks_per_sec
< 0)
2780 clocks_per_sec
= 100;
2781 attrs
= Fcons (Fcons (Qutime
,
2782 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2784 attrs
= Fcons (Fcons (Qstime
,
2785 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2787 attrs
= Fcons (Fcons (Qtime
,
2788 ltime_from_jiffies (s_time
+ u_time
,
2791 attrs
= Fcons (Fcons (Qcutime
,
2792 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2794 attrs
= Fcons (Fcons (Qcstime
,
2795 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2797 attrs
= Fcons (Fcons (Qctime
,
2798 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2800 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2801 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2802 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2803 EMACS_GET_TIME (tnow
);
2804 get_up_time (&sec
, &usec
);
2805 EMACS_SET_SECS (telapsed
, sec
);
2806 EMACS_SET_USECS (telapsed
, usec
);
2807 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2808 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2809 EMACS_SET_SECS (tstart
, sec
);
2810 EMACS_SET_USECS (tstart
, usec
);
2811 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2812 attrs
= Fcons (Fcons (Qstart
,
2814 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2816 (EMACS_SECS (tstart
) & 0xffff),
2818 (EMACS_USECS (tstart
)))),
2820 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2821 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2822 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2823 attrs
= Fcons (Fcons (Qetime
,
2825 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2827 (EMACS_SECS (telapsed
) & 0xffff),
2829 (EMACS_USECS (telapsed
)))),
2831 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2832 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2835 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2836 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2839 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2846 strcpy (procfn_end
, "/cmdline");
2847 fd
= emacs_open (fn
, O_RDONLY
, 0);
2851 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2854 if (isspace (c
) || c
== '\\')
2855 cmdline_size
++; /* for later quoting, see below */
2859 cmdline
= xmalloc (cmdline_size
+ 1);
2860 lseek (fd
, 0L, SEEK_SET
);
2862 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2863 cmdline
[nread
++] = '\0';
2866 /* Assigning zero to `nread' makes us skip the following
2867 two loops, assign zero to cmdline_size, and enter the
2868 following `if' clause that handles unknown command
2872 /* We don't want trailing null characters. */
2873 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2875 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2877 /* Escape-quote whitespace and backslashes. */
2878 if (isspace (*p
) || *p
== '\\')
2880 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2884 else if (*p
== '\0')
2887 cmdline_size
= nread
;
2894 cmdsize
= strlen (cmd
);
2895 cmdline_size
= cmdsize
+ 2;
2896 cmdline
= xmalloc (cmdline_size
+ 1);
2897 strcpy (cmdline
, "[");
2898 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2901 /* Command line is encoded in locale-coding-system; decode it. */
2902 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2903 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2904 Vlocale_coding_system
, 0);
2906 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2913 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2915 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2916 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2917 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2918 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2919 #undef _FILE_OFFSET_BITS
2921 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2926 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2927 #define _FILE_OFFSET_BITS 64
2928 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2931 system_process_attributes (Lisp_Object pid
)
2933 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2938 struct psinfo pinfo
;
2941 int proc_id
, uid
, gid
;
2942 Lisp_Object attrs
= Qnil
;
2943 Lisp_Object decoded_cmd
, tem
;
2944 struct gcpro gcpro1
, gcpro2
;
2945 EMACS_INT uid_eint
, gid_eint
;
2947 CHECK_NUMBER_OR_FLOAT (pid
);
2948 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2949 sprintf (procfn
, "/proc/%u", proc_id
);
2950 if (stat (procfn
, &st
) < 0)
2953 GCPRO2 (attrs
, decoded_cmd
);
2957 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2959 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2961 pw
= getpwuid (uid
);
2964 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2968 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2970 gr
= getgrgid (gid
);
2973 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2975 strcpy (fn
, procfn
);
2976 procfn_end
= fn
+ strlen (fn
);
2977 strcpy (procfn_end
, "/psinfo");
2978 fd
= emacs_open (fn
, O_RDONLY
, 0);
2980 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2982 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2983 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2984 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2988 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2989 state_str
[1] = '\0';
2990 tem
= build_string (state_str
);
2991 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2994 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2995 need to get a string from it. */
2997 /* FIXME: missing: Qtpgid */
3009 Are they available? */
3011 attrs
= Fcons (Fcons (Qtime
,
3012 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3013 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3014 make_number (pinfo
.pr_time
.tv_nsec
))),
3017 attrs
= Fcons (Fcons (Qctime
,
3018 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3019 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3020 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3023 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3024 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3025 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3027 attrs
= Fcons (Fcons (Qstart
,
3028 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3029 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3030 make_number (pinfo
.pr_start
.tv_nsec
))),
3032 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3033 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3035 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3036 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3037 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3040 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3041 strlen (pinfo
.pr_fname
)),
3042 Vlocale_coding_system
, 0);
3043 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3045 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3046 strlen (pinfo
.pr_psargs
)),
3047 Vlocale_coding_system
, 0);
3048 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3058 /* The WINDOWSNT implementation is in w32.c.
3059 The MSDOS implementation is in dosfns.c. */
3060 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3063 system_process_attributes (Lisp_Object pid
)
3068 #endif /* !defined (WINDOWSNT) */