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 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, or (at your option)
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; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
33 /* Including stdlib.h isn't necessarily enough to get srandom
34 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
36 #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets
37 random prototyped as returning `int'. It looks to me as
38 though the best way to DTRT is to prefer the rand48 functions
39 (per libc.info). -- fx */
40 extern long int random
P_ ((void));
42 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
43 some systems, and an unsigned long on others, like FreeBSD
45 extern void srandom
P_ ((unsigned int));
49 /* The w32 build defines select stuff in w32.h, which is included by
50 sys/select.h (included below). */
52 #include "sysselect.h"
55 #include "blockinput.h"
58 #include <sys/param.h>
61 /* Nonzero means delete a process right away if it exits (process.c). */
62 static int delete_exited_processes
;
68 #define write sys_write
73 #endif /* not WINDOWSNT */
75 /* Does anyone other than VMS need this? */
77 #define sys_fwrite fwrite
82 #include <sys/types.h>
87 #if !defined (USG) || defined (BSD_PGRPS)
89 #define setpgrp setpgid
93 /* Get SI_SRPC_DOMAIN, if it is available. */
94 #ifdef HAVE_SYS_SYSTEMINFO_H
95 #include <sys/systeminfo.h>
98 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
102 #include <sys/param.h>
106 extern unsigned start
__asm__ ("start");
128 #include <sys/file.h>
136 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
140 #include <sys/file.h>
148 #include <sys/ioctl.h>
154 #ifdef BROKEN_TIOCGWINSZ
159 #if defined (USG) || defined (DGUX)
160 #include <sys/utsname.h>
161 #ifndef MEMORY_IN_STRING_H
164 #if defined (TIOCGWINSZ) || defined (ISC4_0)
166 #include <sys/sioctl.h>
169 #include <sys/stream.h>
170 #include <sys/ptem.h>
172 #endif /* TIOCGWINSZ or ISC4_0 */
173 #endif /* USG or DGUX */
175 extern int quit_char
;
177 #include "keyboard.h"
180 #include "termhooks.h"
181 #include "termchar.h"
182 #include "termopts.h"
183 #include "dispextern.h"
185 #include "cm.h" /* for reset_sys_modes */
189 /* In process.h which conflicts with the local copy. */
191 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
192 int _CRTAPI1
_getpid (void);
193 extern char *getwd (char *);
196 #ifdef NONSYSTEM_DIR_LIBRARY
198 #endif /* NONSYSTEM_DIR_LIBRARY */
200 #include "syssignal.h"
207 #ifndef HAVE_STRUCT_UTIMBUF
208 /* We want to use utime rather than utimes, but we couldn't find the
209 structure declaration. We'll use the traditional one. */
217 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
223 #define LNOFLSH 0100000
226 static int baud_convert
[] =
231 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
232 1800, 2400, 4800, 9600, 19200, 38400
239 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
241 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
249 void croak
P_ ((char *)) NO_RETURN
;
252 void hft_init
P_ ((struct tty_display_info
*));
253 void hft_reset
P_ ((struct tty_display_info
*));
256 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
258 SIGMASKTYPE sigprocmask_set
;
261 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
263 /* Return the current working directory. Returns NULL on errors.
264 Any other returned value must be freed with free. This is used
265 only when get_current_dir_name is not defined on the system. */
267 get_current_dir_name ()
271 struct stat dotstat
, pwdstat
;
272 /* If PWD is accurate, use it instead of calling getwd. PWD is
273 sometimes a nicer name, and using it may avoid a fatal error if a
274 parent directory is searchable but not readable. */
275 if ((pwd
= getenv ("PWD")) != 0
276 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
277 && stat (pwd
, &pwdstat
) == 0
278 && stat (".", &dotstat
) == 0
279 && dotstat
.st_ino
== pwdstat
.st_ino
280 && dotstat
.st_dev
== pwdstat
.st_dev
282 && strlen (pwd
) < MAXPATHLEN
286 buf
= (char *) malloc (strlen (pwd
) + 1);
294 size_t buf_size
= 1024;
295 buf
= (char *) malloc (buf_size
);
300 if (getcwd (buf
, buf_size
) == buf
)
304 int tmp_errno
= errno
;
310 buf
= (char *) realloc (buf
, buf_size
);
318 /* We need MAXPATHLEN here. */
319 buf
= (char *) malloc (MAXPATHLEN
+ 1);
322 if (getwd (buf
) == NULL
)
324 int tmp_errno
= errno
;
336 /* Discard pending input on all input descriptors. */
342 struct emacs_tty buf
;
349 SYS$
QIOW (0, fileno (CURTTY()->input
), IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
350 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
355 struct tty_display_info
*tty
;
356 for (tty
= tty_list
; tty
; tty
= tty
->next
)
360 ioctl (fileno (tty
->input
), TIOCFLUSH
, &zero
);
363 #else /* not Apollo */
364 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
365 while (dos_keyread () != -1)
367 #else /* not MSDOS */
369 struct tty_display_info
*tty
;
370 for (tty
= tty_list
; tty
; tty
= tty
->next
)
372 if (tty
->input
) /* Is the device suspended? */
374 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
375 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
379 #endif /* not MSDOS */
380 #endif /* not Apollo */
382 #endif /* not WINDOWSNT */
388 /* Arrange for character C to be read as the next input from
390 XXX What if we have multiple ttys?
396 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
399 /* Should perhaps error if in batch mode */
401 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
402 #else /* no TIOCSTI */
403 error ("Cannot stuff terminal input characters in this version of Unix");
404 #endif /* no TIOCSTI */
410 init_baud_rate (int fd
)
416 #ifdef INIT_BAUD_RATE
421 #else /* not DOS_NT */
425 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &sg
, 0, 0,
426 &sg
.class, 12, 0, 0, 0, 0 );
427 emacs_ospeed
= sg
.xmit_baud
;
434 emacs_ospeed
= cfgetospeed (&sg
);
435 #if defined (USE_GETOBAUD) && defined (getobaud)
436 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
437 if (emacs_ospeed
== 0)
438 emacs_ospeed
= getobaud (sg
.c_cflag
);
440 #else /* neither VMS nor TERMIOS */
448 ioctl (fd
, TCGETA
, &sg
);
450 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
451 #else /* neither VMS nor TERMIOS nor TERMIO */
454 sg
.sg_ospeed
= B9600
;
455 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
457 emacs_ospeed
= sg
.sg_ospeed
;
458 #endif /* not HAVE_TERMIO */
459 #endif /* not HAVE_TERMIOS */
461 #endif /* not DOS_NT */
462 #endif /* not INIT_BAUD_RATE */
465 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
466 ? baud_convert
[emacs_ospeed
] : 9600);
474 set_exclusive_use (fd
)
478 ioctl (fd
, FIOCLEX
, 0);
480 /* Ok to do nothing if this feature does not exist */
485 wait_without_blocking ()
488 wait3 (0, WNOHANG
| WUNTRACED
, 0);
490 croak ("wait_without_blocking");
492 synch_process_alive
= 0;
495 #endif /* not subprocesses */
497 int wait_debugging
; /* Set nonzero to make following function work under dbx
498 (at least for bsd). */
501 wait_for_termination_signal ()
504 /* Wait for subprocess with process id `pid' to terminate and
505 make sure it will get eliminated (not remain forever as a zombie) */
508 wait_for_termination (pid
)
517 status
= SYS$
FORCEX (&pid
, 0, 0);
520 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
521 /* Note that kill returns -1 even if the process is just a zombie now.
522 But inevitably a SIGCHLD interrupt should be generated
523 and child_sig will do wait3 and make the process go away. */
524 /* There is some indication that there is a bug involved with
525 termination of subprocesses, perhaps involving a kernel bug too,
526 but no idea what it is. Just as a hunch we signal SIGCHLD to see
527 if that causes the problem to go away or get worse. */
528 sigsetmask (sigmask (SIGCHLD
));
529 if (0 > kill (pid
, 0))
531 sigsetmask (SIGEMPTYMASK
);
532 kill (getpid (), SIGCHLD
);
538 sigpause (SIGEMPTYMASK
);
539 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
540 #if defined (UNIPLUS)
541 if (0 > kill (pid
, 0))
544 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
545 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
546 sigblock (sigmask (SIGCHLD
));
548 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
550 sigunblock (sigmask (SIGCHLD
));
554 sigsuspend (&empty_mask
);
555 #else /* not POSIX_SIGNALS */
556 #ifdef HAVE_SYSV_SIGPAUSE
558 if (0 > kill (pid
, 0))
564 #else /* not HAVE_SYSV_SIGPAUSE */
568 #else /* not WINDOWSNT */
569 if (0 > kill (pid
, 0))
571 /* Using sleep instead of pause avoids timing error.
572 If the inferior dies just before the sleep,
573 we lose just one second. */
575 #endif /* not WINDOWSNT */
576 #endif /* not HAVE_SYSV_SIGPAUSE */
577 #endif /* not POSIX_SIGNALS */
578 #endif /* not UNIPLUS */
579 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
581 #else /* not subprocesses */
584 #else /* not __DJGPP__ > 1 */
586 if (kill (pid
, 0) < 0)
592 if (status
== pid
|| status
== -1)
595 #endif /* not __DJGPP__ > 1*/
596 #endif /* not subprocesses */
603 * flush any pending output
604 * (may flush input as well; it does not matter the way we use it)
608 flush_pending_output (channel
)
612 /* If we try this, we get hit with SIGTTIN, because
613 the child's tty belongs to the child's pgrp. */
616 ioctl (channel
, TCFLSH
, 1);
620 /* 3rd arg should be ignored
621 but some 4.2 kernels actually want the address of an int
622 and nonzero means something different. */
623 ioctl (channel
, TIOCFLUSH
, &zero
);
630 /* Set up the terminal at the other end of a pseudo-terminal that
631 we will be controlling an inferior through.
632 It should not echo or do line-editing, since that is done
633 in Emacs. No padding needed for insertion into an Emacs buffer. */
636 child_setup_tty (out
)
642 EMACS_GET_TTY (out
, &s
);
644 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
645 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
646 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
648 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
649 /* No output delays */
651 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
652 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
653 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
654 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
655 #ifdef INLCR /* Just being cautious, since I can't check how
656 widespread INLCR is--rms. */
657 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
661 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
664 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
667 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
669 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
670 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
672 /* Said to be unnecessary: */
673 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
674 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
677 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
678 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
679 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
680 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
683 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
686 #ifdef SIGNALS_VIA_CHARACTERS
687 /* the QUIT and INTR character are used in process_send_signal
688 so set them here to something useful. */
689 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
690 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
691 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
692 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
693 #endif /* not SIGNALS_VIA_CHARACTERS */
696 /* AIX enhanced edit loses NULs, so disable it */
699 s
.main
.c_iflag
&= ~ASCEDIT
;
701 /* Also, PTY overloads NUL and BREAK.
702 don't ignore break, but don't signal either, so it looks like NUL. */
703 s
.main
.c_iflag
&= ~IGNBRK
;
704 s
.main
.c_iflag
&= ~BRKINT
;
705 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
706 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
707 would force it to 0377. That looks like duplicated code. */
708 #ifndef SIGNALS_VIA_CHARACTERS
709 /* QUIT and INTR work better as signals, so disable character forms */
710 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
711 s
.main
.c_cc
[VINTR
] = CDISABLE
;
712 s
.main
.c_lflag
&= ~ISIG
;
713 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
714 s
.main
.c_cc
[VEOL
] = CDISABLE
;
715 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
718 #else /* not HAVE_TERMIO */
720 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
722 s
.main
.sg_flags
|= LPASS8
;
723 s
.main
.sg_erase
= 0377;
724 s
.main
.sg_kill
= 0377;
725 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
727 #endif /* not HAVE_TERMIO */
729 EMACS_SET_TTY (out
, &s
, 0);
738 ioctl (out
, FIOASYNC
, &zero
);
741 #endif /* not DOS_NT */
745 #endif /* subprocesses */
747 /* Record a signal code and the handler for it. */
751 SIGTYPE (*handler
) P_ ((int));
754 static void save_signal_handlers
P_ ((struct save_signal
*));
755 static void restore_signal_handlers
P_ ((struct save_signal
*));
757 /* Suspend the Emacs process; give terminal to its superior. */
763 /* "Foster" parentage allows emacs to return to a subprocess that attached
764 to the current emacs as a cheaper than starting a whole new process. This
765 is set up by KEPTEDITOR.COM. */
766 unsigned long parent_id
, foster_parent_id
;
769 fpid_string
= getenv ("EMACS_PARENT_PID");
770 if (fpid_string
!= NULL
)
772 sscanf (fpid_string
, "%x", &foster_parent_id
);
773 if (foster_parent_id
!= 0)
774 parent_id
= foster_parent_id
;
776 parent_id
= getppid ();
779 parent_id
= getppid ();
781 xfree (fpid_string
); /* On VMS, this was malloc'd */
783 if (parent_id
&& parent_id
!= 0xffffffff)
785 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
786 int status
= LIB$
ATTACH (&parent_id
) & 1;
787 signal (SIGINT
, oldsig
);
796 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
797 d_prompt
.a
= "Emacs: "; /* Just a reminder */
798 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
803 #if defined (SIGTSTP) && !defined (MSDOS)
806 int pgrp
= EMACS_GETPGRP (0);
807 EMACS_KILLPG (pgrp
, SIGTSTP
);
810 #else /* No SIGTSTP */
811 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
812 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
813 kill (getpid (), SIGQUIT
);
815 #else /* No SIGTSTP or USG_JOBCTRL */
817 /* On a system where suspending is not implemented,
818 instead fork a subshell and let it talk directly to the terminal
822 #endif /* no USG_JOBCTRL */
823 #endif /* no SIGTSTP */
827 /* Fork a subshell. */
834 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
836 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
839 struct save_signal saved_handlers
[5];
841 unsigned char *str
= 0;
844 saved_handlers
[0].code
= SIGINT
;
845 saved_handlers
[1].code
= SIGQUIT
;
846 saved_handlers
[2].code
= SIGTERM
;
848 saved_handlers
[3].code
= SIGIO
;
849 saved_handlers
[4].code
= 0;
851 saved_handlers
[3].code
= 0;
854 /* Mentioning current_buffer->buffer would mean including buffer.h,
855 which somehow wedges the hp compiler. So instead... */
857 dir
= intern ("default-directory");
858 if (NILP (Fboundp (dir
)))
860 dir
= Fsymbol_value (dir
);
864 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
865 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
867 bcopy (SDATA (dir
), str
, len
);
868 if (str
[len
- 1] != '/') str
[len
++] = '/';
875 save_signal_handlers (saved_handlers
);
876 synch_process_alive
= 1;
877 #endif /* __DJGPP__ > 1 */
881 error ("Can't spawn subshell");
888 #ifdef DOS_NT /* MW, Aug 1993 */
891 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
894 sh
= (char *) egetenv ("SHELL");
898 /* Use our buffer's default directory for the subshell. */
900 chdir ((char *) str
);
903 close_process_descs (); /* Close Emacs's pipes/ptys */
906 #ifdef SET_EMACS_PRIORITY
908 extern EMACS_INT emacs_priority
;
910 if (emacs_priority
< 0)
911 nice (-emacs_priority
);
915 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
917 char *epwd
= getenv ("PWD");
918 char old_pwd
[MAXPATHLEN
+1+4];
920 /* If PWD is set, pass it with corrected value. */
923 strcpy (old_pwd
, epwd
);
924 if (str
[len
- 1] == '/')
926 setenv ("PWD", str
, 1);
931 putenv (old_pwd
); /* restore previous value */
933 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
935 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
937 #else /* not MSDOS */
939 /* Waits for process completion */
940 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
943 write (1, "Can't execute subshell", 22);
944 #else /* not WINDOWSNT */
945 execlp (sh
, sh
, (char *) 0);
946 write (1, "Can't execute subshell", 22);
948 #endif /* not WINDOWSNT */
949 #endif /* not MSDOS */
952 /* Do this now if we did not do it before. */
953 #if !defined (MSDOS) || __DJGPP__ == 1
954 save_signal_handlers (saved_handlers
);
955 synch_process_alive
= 1;
959 wait_for_termination (pid
);
961 restore_signal_handlers (saved_handlers
);
962 synch_process_alive
= 0;
965 #endif /* !MAC_OS8 */
968 save_signal_handlers (saved_handlers
)
969 struct save_signal
*saved_handlers
;
971 while (saved_handlers
->code
)
973 saved_handlers
->handler
974 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
980 restore_signal_handlers (saved_handlers
)
981 struct save_signal
*saved_handlers
;
983 while (saved_handlers
->code
)
985 signal (saved_handlers
->code
, saved_handlers
->handler
);
991 /* If SIGIO is broken, don't do anything. */
1003 request_sigio (void)
1008 unrequest_sigio (void)
1015 int old_fcntl_flags
[MAXDESC
];
1022 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
1023 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
1025 interrupts_deferred
= 0;
1033 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
1037 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
1038 /* XXX Uhm, FASYNC is not used anymore here. */
1039 /* XXX Yeah, but you need it for SIGIO, don't you? */
1048 sigunblock (sigmask (SIGWINCH
));
1050 sigunblock (sigmask (SIGIO
));
1052 interrupts_deferred
= 0;
1056 unrequest_sigio (void)
1061 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
1067 sigblock (sigmask (SIGWINCH
));
1069 sigblock (sigmask (SIGIO
));
1070 interrupts_deferred
= 1;
1073 #else /* no FASYNC */
1074 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
1081 if (noninteractive
|| read_socket_hook
)
1084 /* XXX CURTTY() is bogus here. */
1085 ioctl (fileno (CURTTY ()->input
), FIOASYNC
, &on
);
1086 interrupts_deferred
= 0;
1094 if (noninteractive
|| read_socket_hook
)
1097 /* XXX CURTTY() is bogus here. */
1098 ioctl (fileno (CURTTY ()->input
), FIOASYNC
, &off
);
1099 interrupts_deferred
= 1;
1102 #else /* not FASYNC, not STRIDE */
1106 #include <termios.h>
1114 if (noninteractive
|| read_socket_hook
)
1118 sigaddset (&st
, SIGIO
);
1119 ioctl (0, FIOASYNC
, &on
); /* XXX This fails for multiple ttys. */
1120 interrupts_deferred
= 0;
1121 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
1129 if (noninteractive
|| read_socket_hook
)
1132 ioctl (0, FIOASYNC
, &off
); /* XXX This fails for multiple ttys. */
1133 interrupts_deferred
= 1;
1136 #else /* ! _CX_UX */
1142 if (noninteractive
|| read_socket_hook
)
1145 croak ("request_sigio");
1151 if (noninteractive
|| read_socket_hook
)
1154 croak ("unrequest_sigio");
1161 #endif /* F_SETFL */
1164 /* Saving and restoring the process group of Emacs's terminal. */
1168 /* The process group of which Emacs was a member when it initially
1171 If Emacs was in its own process group (i.e. inherited_pgroup ==
1172 getpid ()), then we know we're running under a shell with job
1173 control (Emacs would never be run as part of a pipeline).
1176 If Emacs was not in its own process group, then we know we're
1177 running under a shell (or a caller) that doesn't know how to
1178 separate itself from Emacs (like sh). Emacs must be in its own
1179 process group in order to receive SIGIO correctly. In this
1180 situation, we put ourselves in our own pgroup, forcibly set the
1181 tty's pgroup to our pgroup, and make sure to restore and reinstate
1182 the tty's pgroup just like any other terminal setting. If
1183 inherited_group was not the tty's pgroup, then we'll get a
1184 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1185 it goes foreground in the future, which is what should happen.
1187 This variable is initialized in emacs.c. */
1188 int inherited_pgroup
;
1190 /* Split off the foreground process group to Emacs alone. When we are
1191 in the foreground, but not started in our own process group,
1192 redirect the tty device handle FD to point to our own process
1193 group. We need to be in our own process group to receive SIGIO
1196 narrow_foreground_group (int fd
)
1200 setpgrp (0, inherited_pgroup
);
1202 /* XXX inherited_pgroup should not be zero here, but GTK seems to
1204 if (! inherited_pgroup
)
1205 abort (); /* Should not happen. */
1207 if (inherited_pgroup
!= me
)
1208 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
1212 /* Set the tty to our original foreground group. */
1214 widen_foreground_group (int fd
)
1216 if (inherited_pgroup
!= getpid ())
1217 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
1218 setpgrp (0, inherited_pgroup
);
1221 #endif /* BSD_PGRPS */
1223 /* Getting and setting emacs_tty structures. */
1225 /* Set *TC to the parameters associated with the terminal FD.
1226 Return zero if all's well, or -1 if we ran into an error we
1227 couldn't deal with. */
1229 emacs_get_tty (fd
, settings
)
1231 struct emacs_tty
*settings
;
1233 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1235 /* We have those nifty POSIX tcmumbleattr functions. */
1236 bzero (&settings
->main
, sizeof (settings
->main
));
1237 if (tcgetattr (fd
, &settings
->main
) < 0)
1242 /* The SYSV-style interface? */
1243 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1248 /* Vehemently Monstrous System? :-) */
1249 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1250 &settings
->main
.class, 12, 0, 0, 0, 0)
1256 /* I give up - I hope you have the BSD ioctls. */
1257 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1259 #endif /* not DOS_NT */
1264 /* Suivant - Do we have to get struct ltchars data? */
1266 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1270 /* How about a struct tchars and a wordful of lmode bits? */
1272 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1273 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1277 /* We have survived the tempest. */
1282 /* Set the parameters of the tty on FD according to the contents of
1283 *SETTINGS. If FLUSHP is non-zero, we discard input.
1284 Return 0 if all went well, and -1 if anything failed. */
1287 emacs_set_tty (fd
, settings
, flushp
)
1289 struct emacs_tty
*settings
;
1292 /* Set the primary parameters - baud rate, character size, etcetera. */
1295 /* We have those nifty POSIX tcmumbleattr functions.
1296 William J. Smith <wjs@wiis.wang.com> writes:
1297 "POSIX 1003.1 defines tcsetattr to return success if it was
1298 able to perform any of the requested actions, even if some
1299 of the requested actions could not be performed.
1300 We must read settings back to ensure tty setup properly.
1301 AIX requires this to keep tty from hanging occasionally." */
1302 /* This make sure that we don't loop indefinitely in here. */
1303 for (i
= 0 ; i
< 10 ; i
++)
1304 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1315 bzero (&new, sizeof (new));
1316 /* Get the current settings, and see if they're what we asked for. */
1317 tcgetattr (fd
, &new);
1318 /* We cannot use memcmp on the whole structure here because under
1319 * aix386 the termios structure has some reserved field that may
1322 if ( new.c_iflag
== settings
->main
.c_iflag
1323 && new.c_oflag
== settings
->main
.c_oflag
1324 && new.c_cflag
== settings
->main
.c_cflag
1325 && new.c_lflag
== settings
->main
.c_lflag
1326 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1334 /* The SYSV-style interface? */
1335 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1340 /* Vehemently Monstrous System? :-) */
1341 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1342 &settings
->main
.class, 12, 0, 0, 0, 0)
1348 /* I give up - I hope you have the BSD ioctls. */
1349 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1351 #endif /* not DOS_NT */
1357 /* Suivant - Do we have to get struct ltchars data? */
1359 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1363 /* How about a struct tchars and a wordful of lmode bits? */
1365 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1366 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1370 /* We have survived the tempest. */
1377 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1382 #ifndef F_SETOWN_BUG
1384 int old_fcntl_owner
[MAXDESC
];
1385 #endif /* F_SETOWN */
1386 #endif /* F_SETOWN_BUG */
1388 /* This may also be defined in stdio,
1389 but if so, this does no harm,
1390 and using the same name avoids wasting the other one's space. */
1393 extern char *_sobuf
;
1395 #if defined (USG) || defined (DGUX)
1396 unsigned char _sobuf
[BUFSIZ
+8];
1398 char _sobuf
[BUFSIZ
];
1403 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1406 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1409 /* Initialize the terminal mode on all tty devices that are currently
1413 init_all_sys_modes (void)
1415 struct tty_display_info
*tty
;
1416 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1417 init_sys_modes (tty
);
1420 /* Initialize the terminal mode on the given tty device. */
1423 init_sys_modes (tty_out
)
1424 struct tty_display_info
*tty_out
;
1426 struct emacs_tty tty
;
1430 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1431 extern int (*interrupt_signal
) ();
1435 Vtty_erase_char
= Qnil
;
1440 if (!tty_out
->output
)
1441 return; /* The tty is suspended. */
1445 input_ef
= get_kbd_event_flag ();
1446 /* LIB$GET_EF (&input_ef); */
1447 SYS$
CLREF (input_ef
);
1448 waiting_for_ast
= 0;
1450 timer_ef
= get_timer_event_flag ();
1451 /* LIB$GET_EF (&timer_ef); */
1452 SYS$
CLREF (timer_ef
);
1456 LIB$
GET_EF (&process_ef
);
1457 SYS$
CLREF (process_ef
);
1459 if (input_ef
/ 32 != process_ef
/ 32)
1460 croak ("Input and process event flags in different clusters.");
1462 if (input_ef
/ 32 != timer_ef
/ 32)
1463 croak ("Input and timer event flags in different clusters.");
1465 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1466 ((unsigned) 1 << (process_ef
% 32));
1468 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1469 ((unsigned) 1 << (timer_ef
% 32));
1471 sys_access_reinit ();
1477 /* read_socket_hook is not global anymore. I think doing this
1478 unconditionally will not cause any problems. */
1479 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1481 narrow_foreground_group (fileno (tty_out
->input
));
1484 if (! tty_out
->old_tty
)
1485 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1487 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1489 tty
= *tty_out
->old_tty
;
1491 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1492 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1495 /* This allows meta to be sent on 8th bit. */
1496 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1498 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1499 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1500 #ifdef INLCR /* I'm just being cautious,
1501 since I can't check how widespread INLCR is--rms. */
1502 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1505 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1507 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1508 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1510 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1512 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1513 if (tty_out
->flow_control
)
1515 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1517 tty
.main
.c_iflag
&= ~IXANY
;
1521 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1522 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1524 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1526 if (tty_out
->meta_key
)
1528 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1529 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1532 if (tty_out
->input
== stdin
)
1534 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1535 /* Set up C-g for both SIGQUIT and SIGINT.
1536 We don't know which we will get, but we handle both alike
1537 so which one it really gives us does not matter. */
1538 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1542 /* We normally don't get interrupt or quit signals from tty
1543 devices other than our controlling terminal; therefore,
1544 we must handle C-g as normal input. Unfortunately, this
1545 means that the interrupt and quit feature must be
1546 disabled on secondary ttys, or we would not even see the
1549 Note that even though emacsclient could have special code
1550 to pass SIGINT to Emacs, we should _not_ enable
1551 interrupt/quit keys for emacsclient frames. This means
1552 that we can't break out of loops in C code from a
1553 secondary tty frame, but we can always decide what
1554 display the C-g came from, which is more important from a
1555 usability point of view. (Consider the case when two
1556 people work together using the same Emacs instance.) */
1557 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1558 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1560 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1561 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1563 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1567 #if defined (mips) || defined (HAVE_TCATTR)
1569 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1572 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1573 #endif /* V_DSUSP */
1574 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1575 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1578 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1581 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1582 #endif /* VREPRINT */
1584 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1585 #endif /* VWERASE */
1587 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1588 #endif /* VDISCARD */
1590 if (tty_out
->flow_control
)
1593 tty
.main
.c_cc
[VSTART
] = '\021';
1596 tty
.main
.c_cc
[VSTOP
] = '\023';
1602 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1605 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1608 #endif /* mips or HAVE_TCATTR */
1610 #ifdef SET_LINE_DISCIPLINE
1611 /* Need to explicitly request TERMIODISC line discipline or
1612 Ultrix's termios does not work correctly. */
1613 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1617 /* AIX enhanced edit loses NULs, so disable it. */
1618 tty
.main
.c_line
= 0;
1619 tty
.main
.c_iflag
&= ~ASCEDIT
;
1621 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1622 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1623 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1624 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1625 #endif /* IBMR2AIX */
1626 if (tty_out
->flow_control
)
1629 tty
.main
.c_cc
[VSTART
] = '\021';
1632 tty
.main
.c_cc
[VSTOP
] = '\023';
1635 /* Also, PTY overloads NUL and BREAK.
1636 don't ignore break, but don't signal either, so it looks like NUL.
1637 This really serves a purpose only if running in an XTERM window
1638 or via TELNET or the like, but does no harm elsewhere. */
1639 tty
.main
.c_iflag
&= ~IGNBRK
;
1640 tty
.main
.c_iflag
&= ~BRKINT
;
1642 #else /* if not HAVE_TERMIO */
1644 tty
.main
.tt_char
|= TT$M_NOECHO
;
1646 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1647 if (tty_out
->flow_control
)
1648 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1650 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1651 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1652 #else /* not VMS (BSD, that is) */
1654 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1655 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1657 tty
.main
.sg_flags
|= ANYP
;
1658 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1659 #endif /* not DOS_NT */
1660 #endif /* not VMS (BSD, that is) */
1661 #endif /* not HAVE_TERMIO */
1663 /* If going to use CBREAK mode, we must request C-g to interrupt
1664 and turn off start and stop chars, etc. If not going to use
1665 CBREAK mode, do this anyway so as to turn off local flow
1666 control for user coming over network on 4.2; in this case,
1667 only t_stopc and t_startc really matter. */
1670 /* Note: if not using CBREAK mode, it makes no difference how we
1672 tty
.tchars
= new_tchars
;
1673 tty
.tchars
.t_intrc
= quit_char
;
1674 if (tty_out
->flow_control
)
1676 tty
.tchars
.t_startc
= '\021';
1677 tty
.tchars
.t_stopc
= '\023';
1680 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1682 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1683 anything, and leaving it in breaks the meta key. Go figure. */
1684 tty
.lmode
&= ~LLITOUT
;
1691 #endif /* HAVE_TCHARS */
1692 #endif /* not HAVE_TERMIO */
1695 tty
.ltchars
= new_ltchars
;
1696 #endif /* HAVE_LTCHARS */
1697 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1698 if (!tty_out
->term_initted
)
1699 internal_terminal_init ();
1703 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1705 /* This code added to insure that, if flow-control is not to be used,
1706 we have an unlocked terminal at the start. */
1709 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1713 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1717 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1719 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1727 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1728 to be only LF. This is the way that is done. */
1731 if (ioctl (1, HFTGETID
, &tty
) != -1)
1732 write (1, "\033[20l", 5);
1738 /* Appears to do nothing when in PASTHRU mode.
1739 SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1740 interrupt_signal, oob_chars, 0, 0, 0, 0);
1742 queue_kbd_input (0);
1746 #ifndef F_SETOWN_BUG
1747 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1748 if (interrupt_input
)
1750 old_fcntl_owner
[fileno (tty_out
->input
)] =
1751 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1752 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1753 init_sigio (fileno (tty_out
->input
));
1757 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1758 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1759 init_sigio (gpm_fd
);
1761 #endif /* HAVE_GPM */
1763 #endif /* F_GETOWN */
1764 #endif /* F_SETOWN_BUG */
1765 #endif /* F_SETFL */
1768 if (interrupt_input
)
1769 init_sigio (fileno (tty_out
->input
));
1772 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1776 /* This symbol is defined on recent USG systems.
1777 Someone says without this call USG won't really buffer the file
1778 even with a call to setbuf. */
1779 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1781 setbuf (tty_out
->output
, (char *) _sobuf
);
1784 tty_set_terminal_modes (tty_out
->terminal
);
1786 if (!tty_out
->term_initted
)
1788 Lisp_Object tail
, frame
;
1789 FOR_EACH_FRAME (tail
, frame
)
1791 /* XXX This needs to be revised. */
1792 if (FRAME_TERMCAP_P (XFRAME (frame
))
1793 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1794 init_frame_faces (XFRAME (frame
));
1798 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1800 /* XXX This seems wrong on multi-tty. */
1801 if (display_completed
)
1802 direct_output_forward_char (0);
1806 Lisp_Object tail
, frame
;
1808 FOR_EACH_FRAME (tail
, frame
)
1810 if (FRAME_TERMCAP_P (XFRAME (frame
))
1811 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1812 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1816 tty_out
->term_initted
= 1;
1819 /* Return nonzero if safe to use tabs in output.
1820 At the time this is called, init_sys_modes has not been done yet. */
1823 tabs_safe_p (int fd
)
1825 struct emacs_tty etty
;
1827 EMACS_GET_TTY (fd
, &etty
);
1828 return EMACS_TTY_TABS_OK (&etty
);
1831 /* Get terminal size from system.
1832 Store number of lines into *HEIGHTP and width into *WIDTHP.
1833 We store 0 if there's no valid information. */
1836 get_tty_size (int fd
, int *widthp
, int *heightp
)
1842 struct winsize size
;
1844 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1845 *widthp
= *heightp
= 0;
1848 *widthp
= size
.ws_col
;
1849 *heightp
= size
.ws_row
;
1855 /* SunOS - style. */
1856 struct ttysize size
;
1858 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1859 *widthp
= *heightp
= 0;
1862 *widthp
= size
.ts_cols
;
1863 *heightp
= size
.ts_lines
;
1869 /* Use a fresh channel since the current one may have stale info
1870 (for example, from prior to a suspend); and to avoid a dependency
1871 in the init sequence. */
1873 struct sensemode tty
;
1875 SYS$
ASSIGN (&input_dsc
, &chan
, 0, 0);
1876 SYS$
QIOW (0, chan
, IO$_SENSEMODE
, &tty
, 0, 0,
1877 &tty
.class, 12, 0, 0, 0, 0);
1879 *widthp
= tty
.scr_wid
;
1880 *heightp
= tty
.scr_len
;
1884 *widthp
= ScreenCols ();
1885 *heightp
= ScreenRows ();
1886 #else /* system doesn't know size */
1890 #endif /* not VMS */
1891 #endif /* not SunOS-style */
1892 #endif /* not BSD-style */
1895 /* Set the logical window size associated with descriptor FD
1896 to HEIGHT and WIDTH. This is used mainly with ptys. */
1899 set_window_size (fd
, height
, width
)
1900 int fd
, height
, width
;
1905 struct winsize size
;
1906 size
.ws_row
= height
;
1907 size
.ws_col
= width
;
1909 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1910 return 0; /* error */
1917 /* SunOS - style. */
1918 struct ttysize size
;
1919 size
.ts_lines
= height
;
1920 size
.ts_cols
= width
;
1922 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1928 #endif /* not SunOS-style */
1929 #endif /* not BSD-style */
1934 /* Prepare all terminal devices for exiting Emacs. */
1937 reset_all_sys_modes (void)
1939 struct tty_display_info
*tty
;
1940 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1941 reset_sys_modes (tty
);
1944 /* Prepare the terminal for closing it; move the cursor to the
1945 bottom of the frame, turn off interrupt-driven I/O, etc. */
1948 reset_sys_modes (tty_out
)
1949 struct tty_display_info
*tty_out
;
1956 if (!tty_out
->term_initted
)
1959 if (!tty_out
->output
)
1960 return; /* The tty is suspended. */
1962 /* Go to and clear the last line of the terminal. */
1964 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1966 /* Code adapted from tty_clear_end_of_line. */
1967 if (tty_out
->TS_clr_line
)
1969 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1972 { /* have to do it the hard way */
1974 tty_turn_off_insert (tty_out
);
1976 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1978 fputc (' ', tty_out
->output
);
1982 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1983 fflush (tty_out
->output
);
1985 #if defined (IBMR2AIX) && defined (AIXHFT)
1987 /* HFT devices normally use ^J as a LF/CR. We forced it to
1988 do the LF only. Now, we need to reset it. */
1991 if (ioctl (1, HFTGETID
, &tty
) != -1)
1992 write (1, "\033[20h", 5);
1996 tty_reset_terminal_modes (tty_out
->terminal
);
2000 /* Avoid possible loss of output when changing terminal modes. */
2001 fsync (fileno (tty_out
->output
));
2006 #ifndef F_SETOWN_BUG
2007 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
2008 if (interrupt_input
)
2010 reset_sigio (fileno (tty_out
->input
));
2011 fcntl (fileno (tty_out
->input
), F_SETOWN
,
2012 old_fcntl_owner
[fileno (tty_out
->input
)]);
2014 #endif /* F_SETOWN */
2015 #endif /* F_SETOWN_BUG */
2017 fcntl (fileno (tty_out
->input
), F_SETFL
,
2018 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
2020 #endif /* F_SETFL */
2022 if (interrupt_input
)
2023 reset_sigio (fileno (tty_out
->input
));
2026 if (tty_out
->old_tty
)
2027 while (EMACS_SET_TTY (fileno (tty_out
->input
),
2028 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
2031 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
2035 #ifdef SET_LINE_DISCIPLINE
2036 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
2037 A different old line discipline is therefore not restored, yet.
2038 Restore the old line discipline by hand. */
2039 ioctl (0, TIOCSETD
, &tty_out
->old_tty
.main
.c_line
);
2047 widen_foreground_group (fileno (tty_out
->input
));
2053 /* Set up the proper status flags for use of a pty. */
2059 /* I'm told that TOICREMOTE does not mean control chars
2060 "can't be sent" but rather that they don't have
2061 input-editing or signaling effects.
2062 That should be good, because we have other ways
2063 to do those things in Emacs.
2064 However, telnet mode seems not to work on 4.2.
2065 So TIOCREMOTE is turned off now. */
2067 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
2068 will hang. In particular, the "timeout" feature (which
2069 causes a read to return if there is no data available)
2070 does this. Also it is known that telnet mode will hang
2071 in such a way that Emacs must be stopped (perhaps this
2072 is the same problem).
2074 If TIOCREMOTE is turned off, then there is a bug in
2075 hp-ux which sometimes loses data. Apparently the
2076 code which blocks the master process when the internal
2077 buffer fills up does not work. Other than this,
2078 though, everything else seems to work fine.
2080 Since the latter lossage is more benign, we may as well
2081 lose that way. -- cph */
2083 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
2086 ioctl (fd
, FIONBIO
, &on
);
2091 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
2092 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
2093 /* cause EMACS not to die when it should, i.e., when its own controlling */
2094 /* tty goes away. I've complained to the AIX developers, and they may */
2095 /* change this behavior, but I'm not going to hold my breath. */
2096 signal (SIGHUP
, SIG_IGN
);
2099 #endif /* HAVE_PTYS */
2103 /* Assigning an input channel is done at the start of Emacs execution.
2104 This is called each time Emacs is resumed, also, but does nothing
2105 because input_chain is no longer zero. */
2112 if (fileno (CURTTY ()->input
)) == 0)
2114 status
= SYS$
ASSIGN (&input_dsc
, &fileno (CURTTY ()->input
)), 0, 0);
2120 /* Deassigning the input channel is done before exiting. */
2125 return SYS$
DASSGN (fileno (CURTTY ()->input
)));
2130 /* Request reading one character into the keyboard buffer.
2131 This is done as soon as the buffer becomes empty. */
2137 extern kbd_input_ast ();
2139 waiting_for_ast
= 0;
2141 status
= SYS$
QIO (0, fileno (CURTTY()->input
), IO$_READVBLK
,
2142 &input_iosb
, kbd_input_ast
, 1,
2143 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
2148 /* Ast routine that is called when keyboard input comes in
2149 in accord with the SYS$QIO above. */
2154 register int c
= -1;
2155 int old_errno
= errno
;
2156 extern EMACS_TIME
*input_available_clear_time
;
2158 if (waiting_for_ast
)
2159 SYS$
SETEF (input_ef
);
2160 waiting_for_ast
= 0;
2163 if (input_count
== 25)
2165 printf ("Ast # %d,", input_count
);
2166 printf (" iosb = %x, %x, %x, %x",
2167 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
2170 if (input_iosb
.offset
)
2174 printf (", char = 0%o", c
);
2186 struct input_event e
;
2189 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2190 XSETINT (e
.code
, c
);
2191 e
.frame_or_window
= selected_frame
;
2192 kbd_buffer_store_event (&e
);
2194 if (input_available_clear_time
)
2195 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2199 /* Wait until there is something in kbd_buffer. */
2202 wait_for_kbd_input ()
2204 extern int have_process_input
, process_exited
;
2206 /* If already something, avoid doing system calls. */
2207 if (detect_input_pending ())
2211 /* Clear a flag, and tell ast routine above to set it. */
2212 SYS$
CLREF (input_ef
);
2213 waiting_for_ast
= 1;
2214 /* Check for timing error: ast happened while we were doing that. */
2215 if (!detect_input_pending ())
2217 /* No timing error: wait for flag to be set. */
2218 set_waiting_for_input (0);
2219 SYS$
WFLOR (input_ef
, input_eflist
);
2220 clear_waiting_for_input ();
2221 if (!detect_input_pending ())
2222 /* Check for subprocess input availability */
2224 int dsp
= have_process_input
|| process_exited
;
2226 SYS$
CLREF (process_ef
);
2227 if (have_process_input
)
2228 process_command_input ();
2233 update_mode_lines
++;
2234 prepare_menu_bars ();
2235 redisplay_preserve_echo_area (18);
2239 waiting_for_ast
= 0;
2242 /* Get rid of any pending QIO, when we are about to suspend
2243 or when we want to throw away pending input.
2244 We wait for a positive sign that the AST routine has run
2245 and therefore there is no I/O request queued when we return.
2246 SYS$SETAST is used to avoid a timing error. */
2252 printf ("At end_kbd_input.\n");
2256 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2258 SYS$
CANCEL (fileno (CURTTY()->input
));
2263 /* Clear a flag, and tell ast routine above to set it. */
2264 SYS$
CLREF (input_ef
);
2265 waiting_for_ast
= 1;
2267 SYS$
CANCEL (fileno (CURTTY()->input
));
2269 SYS$
WAITFR (input_ef
);
2270 waiting_for_ast
= 0;
2273 /* Wait for either input available or time interval expiry. */
2276 input_wait_timeout (timeval
)
2277 int timeval
; /* Time to wait, in seconds */
2280 static int zero
= 0;
2281 static int large
= -10000000;
2283 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2285 /* If already something, avoid doing system calls. */
2286 if (detect_input_pending ())
2290 /* Clear a flag, and tell ast routine above to set it. */
2291 SYS$
CLREF (input_ef
);
2292 waiting_for_ast
= 1;
2293 /* Check for timing error: ast happened while we were doing that. */
2294 if (!detect_input_pending ())
2296 /* No timing error: wait for flag to be set. */
2298 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2299 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2301 waiting_for_ast
= 0;
2304 /* The standard `sleep' routine works some other way
2305 and it stops working if you have ever quit out of it.
2306 This one continues to work. */
2312 static int zero
= 0;
2313 static int large
= -10000000;
2315 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2318 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2319 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2340 croak ("request sigio");
2348 croak ("unrequest sigio");
2353 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2358 #ifndef SYSTEM_MALLOC
2365 /* Some systems that cannot dump also cannot implement these. */
2368 * Return the address of the start of the text segment prior to
2369 * doing an unexec. After unexec the return value is undefined.
2370 * See crt0.c for further explanation and _start.
2374 #if !(defined (__NetBSD__) && defined (__ELF__))
2375 #ifndef HAVE_TEXT_START
2380 return ((char *) TEXT_START
);
2384 return ((char *) csrt
);
2385 #else /* not GOULD */
2386 extern int _start ();
2387 return ((char *) _start
);
2389 #endif /* TEXT_START */
2391 #endif /* not HAVE_TEXT_START */
2395 * Return the address of the start of the data segment prior to
2396 * doing an unexec. After unexec the return value is undefined.
2397 * See crt0.c for further information and definition of data_start.
2399 * Apparently, on BSD systems this is etext at startup. On
2400 * USG systems (swapping) this is highly mmu dependent and
2401 * is also dependent on whether or not the program is running
2402 * with shared text. Generally there is a (possibly large)
2403 * gap between end of text and start of data with shared text.
2405 * On Uniplus+ systems with shared text, data starts at a
2406 * fixed address. Each port (from a given oem) is generally
2407 * different, and the specific value of the start of data can
2408 * be obtained via the UniPlus+ specific "uvar" system call,
2409 * however the method outlined in crt0.c seems to be more portable.
2411 * Probably what will have to happen when a USG unexec is available,
2412 * at least on UniPlus, is temacs will have to be made unshared so
2413 * that text and data are contiguous. Then once loadup is complete,
2414 * unexec will produce a shared executable where the data can be
2415 * at the normal shared text boundary and the startofdata variable
2416 * will be patched by unexec to the correct value.
2420 #ifndef start_of_data
2425 return ((char *) DATA_START
);
2427 #ifdef ORDINARY_LINK
2429 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2430 * data_start isn't defined. We take the address of environ, which
2431 * is known to live at or near the start of the system crt0.c, and
2432 * we don't sweat the handful of bytes that might lose.
2434 extern char **environ
;
2436 return ((char *) &environ
);
2438 extern int data_start
;
2439 return ((char *) &data_start
);
2440 #endif /* ORDINARY_LINK */
2441 #endif /* DATA_START */
2443 #endif /* start_of_data */
2444 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2446 /* init_system_name sets up the string for the Lisp function
2447 system-name to return. */
2453 extern Lisp_Object Vsystem_name
;
2458 #include <sys/socket.h>
2460 #endif /* HAVE_SOCKETS */
2461 #endif /* not VMS */
2462 #endif /* not BSD4_1 */
2465 #ifndef HAVE_H_ERRNO
2468 #endif /* TRY_AGAIN */
2474 Vsystem_name
= build_string (sysname
);
2478 if ((sp
= egetenv ("SYS$NODE")) == 0)
2479 Vsystem_name
= build_string ("vax-vms");
2480 else if ((end
= index (sp
, ':')) == 0)
2481 Vsystem_name
= build_string (sp
);
2483 Vsystem_name
= make_string (sp
, end
- sp
);
2485 #ifndef HAVE_GETHOSTNAME
2488 Vsystem_name
= build_string (uts
.nodename
);
2489 #else /* HAVE_GETHOSTNAME */
2490 unsigned int hostname_size
= 256;
2491 char *hostname
= (char *) alloca (hostname_size
);
2493 /* Try to get the host name; if the buffer is too short, try
2494 again. Apparently, the only indication gethostname gives of
2495 whether the buffer was large enough is the presence or absence
2496 of a '\0' in the string. Eech. */
2499 gethostname (hostname
, hostname_size
- 1);
2500 hostname
[hostname_size
- 1] = '\0';
2502 /* Was the buffer large enough for the '\0'? */
2503 if (strlen (hostname
) < hostname_size
- 1)
2506 hostname_size
<<= 1;
2507 hostname
= (char *) alloca (hostname_size
);
2510 /* Turn the hostname into the official, fully-qualified hostname.
2511 Don't do this if we're going to dump; this can confuse system
2512 libraries on some machines and make the dumped emacs core dump. */
2515 #endif /* not CANNOT_DUMP */
2516 if (! index (hostname
, '.'))
2520 for (count
= 0;; count
++)
2525 hp
= gethostbyname (hostname
);
2527 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2532 Fsleep_for (make_number (1), Qnil
);
2536 char *fqdn
= (char *) hp
->h_name
;
2541 if (!index (fqdn
, '.'))
2543 /* We still don't have a fully qualified domain name.
2544 Try to find one in the list of alternate names */
2545 char **alias
= hp
->h_aliases
;
2547 && (!index (*alias
, '.')
2548 || !strcmp (*alias
, "localhost.localdomain")))
2555 /* Convert the host name to lower case. */
2556 /* Using ctype.h here would introduce a possible locale
2557 dependence that is probably wrong for hostnames. */
2561 if (*p
>= 'A' && *p
<= 'Z')
2568 #endif /* HAVE_SOCKETS */
2569 /* We used to try using getdomainname here,
2570 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2571 getdomainname gets the NIS/YP domain which often is not the same
2572 as in Internet domain name. */
2573 #if 0 /* Turned off because sysinfo is not really likely to return the
2574 correct Internet domain. */
2575 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2576 if (! index (hostname
, '.'))
2578 /* The hostname is not fully qualified. Append the domain name. */
2580 int hostlen
= strlen (hostname
);
2581 int domain_size
= 256;
2585 char *domain
= (char *) alloca (domain_size
+ 1);
2586 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2587 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2588 if (sys_domain_size
<= 0)
2590 if (domain_size
< sys_domain_size
)
2592 domain_size
= sys_domain_size
;
2595 strcpy (fqdn
, hostname
);
2596 if (domain
[0] == '.')
2597 strcpy (fqdn
+ hostlen
, domain
);
2598 else if (domain
[0] != 0)
2600 fqdn
[hostlen
] = '.';
2601 strcpy (fqdn
+ hostlen
+ 1, domain
);
2607 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2609 Vsystem_name
= build_string (hostname
);
2610 #endif /* HAVE_GETHOSTNAME */
2615 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2616 if (*p
== ' ' || *p
== '\t')
2623 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2625 #include "sysselect.h"
2628 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2629 /* Cause explanatory error message at compile time,
2630 since the select emulation is not good enough for X. */
2631 int *x
= &x_windows_lose_if_no_select_system_call
;
2634 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2635 * Only checks read descriptors.
2637 /* How long to wait between checking fds in select */
2638 #define SELECT_PAUSE 1
2641 /* For longjmp'ing back to read_input_waiting. */
2643 jmp_buf read_alarm_throw
;
2645 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2646 The read_socket_hook function sets this to 1 while it is waiting. */
2648 int read_alarm_should_throw
;
2656 #else /* not BSD4_1 */
2657 signal (SIGALRM
, SIG_IGN
);
2658 #endif /* not BSD4_1 */
2659 SIGNAL_THREAD_CHECK (SIGALRM
);
2660 if (read_alarm_should_throw
)
2661 longjmp (read_alarm_throw
, 1);
2665 /* Only rfds are checked. */
2667 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2669 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2670 EMACS_TIME
*timeout
;
2672 /* XXX This needs to be updated for multi-tty support. Is there
2673 anybody who needs to emulate select these days? */
2678 extern int proc_buffered_char
[];
2679 #ifndef subprocesses
2680 int process_tick
= 0, update_tick
= 0;
2682 extern int process_tick
, update_tick
;
2686 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2687 /* If we're using X, then the native select will work; we only need the
2688 emulation for non-X usage. */
2689 if (!NILP (Vinitial_window_system
))
2690 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2692 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2693 local_timeout
= &timeoutval
;
2705 /* If we are looking only for the terminal, with no timeout,
2706 just read it and wait -- that's more efficient. */
2707 if (*local_timeout
== 100000 && process_tick
== update_tick
2708 && FD_ISSET (0, &orfds
))
2711 for (fd
= 1; fd
< nfds
; ++fd
)
2712 if (FD_ISSET (fd
, &orfds
))
2714 if (! detect_input_pending ())
2715 read_input_waiting ();
2721 /* Once a second, till the timer expires, check all the flagged read
2722 * descriptors to see if any input is available. If there is some then
2723 * set the corresponding bit in the return copy of rfds.
2727 register int to_check
, fd
;
2731 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2733 if (FD_ISSET (fd
, &orfds
))
2735 int avail
= 0, status
= 0;
2738 avail
= detect_input_pending (); /* Special keyboard handler */
2742 status
= ioctl (fd
, FIONREAD
, &avail
);
2743 #else /* no FIONREAD */
2744 /* Hoping it will return -1 if nothing available
2745 or 0 if all 0 chars requested are read. */
2746 if (proc_buffered_char
[fd
] >= 0)
2750 avail
= read (fd
, &buf
, 1);
2752 proc_buffered_char
[fd
] = buf
;
2754 #endif /* no FIONREAD */
2756 if (status
>= 0 && avail
> 0)
2764 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2767 turn_on_atimers (0);
2768 signal (SIGALRM
, select_alarm
);
2770 alarm (SELECT_PAUSE
);
2772 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2773 while (select_alarmed
== 0 && *local_timeout
!= 0
2774 && process_tick
== update_tick
)
2776 /* If we are interested in terminal input,
2777 wait by reading the terminal.
2778 That makes instant wakeup for terminal input at least. */
2779 if (FD_ISSET (0, &orfds
))
2781 read_input_waiting ();
2782 if (detect_input_pending ())
2788 (*local_timeout
) -= SELECT_PAUSE
;
2790 /* Reset the old alarm if there was one. */
2791 turn_on_atimers (1);
2793 if (*local_timeout
== 0) /* Stop on timer being cleared */
2798 #endif /* not WINDOWSNT */
2800 /* Read keyboard input into the standard buffer,
2801 waiting for at least one character. */
2804 read_input_waiting ()
2806 /* XXX This needs to be updated for multi-tty support. Is there
2807 anybody who needs to emulate select these days? */
2809 extern int quit_char
;
2811 if (read_socket_hook
)
2813 struct input_event hold_quit
;
2815 EVENT_INIT (hold_quit
);
2816 hold_quit
.kind
= NO_EVENT
;
2818 read_alarm_should_throw
= 0;
2819 if (! setjmp (read_alarm_throw
))
2820 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2824 if (hold_quit
.kind
!= NO_EVENT
)
2825 kbd_buffer_store_event (&hold_quit
);
2829 struct input_event e
;
2831 nread
= read (fileno (stdin
), buf
, 1);
2834 /* Scan the chars for C-g and store them in kbd_buffer. */
2835 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2836 e
.frame_or_window
= selected_frame
;
2838 for (i
= 0; i
< nread
; i
++)
2840 /* Convert chars > 0177 to meta events if desired.
2841 We do this under the same conditions that read_avail_input does. */
2842 if (read_socket_hook
== 0)
2844 /* If the user says she has a meta key, then believe her. */
2845 if (meta_key
== 1 && (buf
[i
] & 0x80))
2846 e
.modifiers
= meta_modifier
;
2851 XSETINT (e
.code
, buf
[i
]);
2852 kbd_buffer_store_event (&e
);
2853 /* Don't look at input that follows a C-g too closely.
2854 This reduces lossage due to autorepeat on C-g. */
2855 if (buf
[i
] == quit_char
)
2861 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2862 #define select sys_select
2865 #endif /* not HAVE_SELECT */
2866 #endif /* not VMS */
2867 #endif /* not MSDOS */
2876 lmode
= LINTRUP
| lmode
;
2877 ioctl (fd
, TIOCLSET
, &lmode
);
2886 lmode
= ~LINTRUP
& lmode
;
2887 ioctl (fd
, TIOCLSET
, &lmode
);
2897 interrupts_deferred
= 0;
2907 interrupts_deferred
= 1;
2910 /* still inside #ifdef BSD4_1 */
2913 int sigheld
; /* Mask of held signals */
2919 sigheld
|= sigbit (signum
);
2927 sigheld
|= sigbit (signum
);
2934 sigheld
&= ~sigbit (signum
);
2939 sigfree () /* Free all held signals */
2942 for (i
= 0; i
< NSIG
; i
++)
2943 if (sigheld
& sigbit (i
))
2951 return 1 << (i
- 1);
2953 #endif /* subprocesses */
2956 /* POSIX signals support - DJB */
2957 /* Anyone with POSIX signals should have ANSI C declarations */
2959 #ifdef POSIX_SIGNALS
2961 sigset_t empty_mask
, full_mask
;
2964 sys_signal (int signal_number
, signal_handler_t action
)
2966 struct sigaction new_action
, old_action
;
2967 sigemptyset (&new_action
.sa_mask
);
2968 new_action
.sa_handler
= action
;
2969 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT)
2970 /* Emacs mostly works better with restartable system services. If this
2971 flag exists, we probably want to turn it on here.
2972 However, on some systems this resets the timeout of `select'
2973 which means that `select' never finishes if it keeps getting signals.
2974 BROKEN_SA_RESTART is defined on those systems. */
2975 /* It's not clear why the comment above says "mostly works better". --Stef
2976 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
2977 for pending input so we need long-running syscalls to be interrupted
2978 after a signal that sets the interrupt_input_pending flag. */
2979 new_action
.sa_flags
= SA_RESTART
;
2981 new_action
.sa_flags
= 0;
2983 sigaction (signal_number
, &new_action
, &old_action
);
2984 return (old_action
.sa_handler
);
2988 /* If we're compiling with GCC, we don't need this function, since it
2989 can be written as a macro. */
2991 sys_sigmask (int sig
)
2994 sigemptyset (&mask
);
2995 sigaddset (&mask
, sig
);
3000 /* I'd like to have these guys return pointers to the mask storage in here,
3001 but there'd be trouble if the code was saving multiple masks. I'll be
3002 safe and pass the structure. It normally won't be more than 2 bytes
3006 sys_sigblock (sigset_t new_mask
)
3009 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
3014 sys_sigunblock (sigset_t new_mask
)
3017 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
3022 sys_sigsetmask (sigset_t new_mask
)
3025 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
3029 #endif /* POSIX_SIGNALS */
3031 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
3032 static char *my_sys_siglist
[NSIG
];
3036 # define sys_siglist my_sys_siglist
3042 #ifdef POSIX_SIGNALS
3043 sigemptyset (&empty_mask
);
3044 sigfillset (&full_mask
);
3047 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
3051 sys_siglist
[SIGABRT
] = "Aborted";
3054 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
3057 sys_siglist
[SIGALRM
] = "Alarm clock";
3060 sys_siglist
[SIGBUS
] = "Bus error";
3063 sys_siglist
[SIGCLD
] = "Child status changed";
3066 sys_siglist
[SIGCHLD
] = "Child status changed";
3069 sys_siglist
[SIGCONT
] = "Continued";
3072 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
3075 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
3078 sys_siglist
[SIGEMT
] = "Emulation trap";
3081 sys_siglist
[SIGFPE
] = "Arithmetic exception";
3084 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
3087 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
3090 sys_siglist
[SIGHUP
] = "Hangup";
3093 sys_siglist
[SIGILL
] = "Illegal instruction";
3096 sys_siglist
[SIGINT
] = "Interrupt";
3099 sys_siglist
[SIGIO
] = "I/O possible";
3102 sys_siglist
[SIGIOINT
] = "I/O intervention required";
3105 sys_siglist
[SIGIOT
] = "IOT trap";
3108 sys_siglist
[SIGKILL
] = "Killed";
3111 sys_siglist
[SIGLOST
] = "Resource lost";
3114 sys_siglist
[SIGLWP
] = "SIGLWP";
3117 sys_siglist
[SIGMSG
] = "Monitor mode data available";
3120 sys_siglist
[SIGWIND
] = "SIGPHONE";
3123 sys_siglist
[SIGPIPE
] = "Broken pipe";
3126 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
3129 sys_siglist
[SIGPROF
] = "Profiling timer expired";
3132 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
3135 sys_siglist
[SIGPWR
] = "Power-fail restart";
3138 sys_siglist
[SIGQUIT
] = "Quit";
3141 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
3144 sys_siglist
[SIGSAK
] = "Secure attention";
3147 sys_siglist
[SIGSEGV
] = "Segmentation violation";
3150 sys_siglist
[SIGSOUND
] = "Sound completed";
3153 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
3156 sys_siglist
[SIGSTP
] = "Stopped (user)";
3159 sys_siglist
[SIGSYS
] = "Bad argument to system call";
3162 sys_siglist
[SIGTERM
] = "Terminated";
3165 sys_siglist
[SIGTHAW
] = "SIGTHAW";
3168 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
3171 sys_siglist
[SIGTSTP
] = "Stopped (user)";
3174 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
3177 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
3180 sys_siglist
[SIGURG
] = "Urgent I/O condition";
3183 sys_siglist
[SIGUSR1
] = "User defined signal 1";
3186 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3189 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3192 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3195 sys_siglist
[SIGWINCH
] = "Window size changed";
3198 sys_siglist
[SIGWIND
] = "SIGWIND";
3201 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3204 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3207 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
3216 /* Figure out how many bits the system's random number generator uses.
3217 `random' and `lrand48' are assumed to return 31 usable bits.
3218 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3219 so we'll shift it and treat it like the 15-bit USG `rand'. */
3223 # define RAND_BITS 31
3224 # else /* !HAVE_RANDOM */
3225 # ifdef HAVE_LRAND48
3226 # define RAND_BITS 31
3227 # define random lrand48
3228 # else /* !HAVE_LRAND48 */
3229 # define RAND_BITS 15
3230 # if RAND_MAX == 32767
3231 # define random rand
3232 # else /* RAND_MAX != 32767 */
3233 # if RAND_MAX == 2147483647
3234 # define random() (rand () >> 16)
3235 # else /* RAND_MAX != 2147483647 */
3237 # define random rand
3239 # define random() (rand () >> 16)
3241 # endif /* RAND_MAX != 2147483647 */
3242 # endif /* RAND_MAX != 32767 */
3243 # endif /* !HAVE_LRAND48 */
3244 # endif /* !HAVE_RANDOM */
3245 #endif /* !RAND_BITS */
3252 srandom ((unsigned int)arg
);
3254 # ifdef HAVE_LRAND48
3257 srand ((unsigned int)arg
);
3263 * Build a full Emacs-sized word out of whatever we've got.
3264 * This suffices even for a 64-bit architecture with a 15-bit rand.
3269 long val
= random ();
3270 #if VALBITS > RAND_BITS
3271 val
= (val
<< RAND_BITS
) ^ random ();
3272 #if VALBITS > 2*RAND_BITS
3273 val
= (val
<< RAND_BITS
) ^ random ();
3274 #if VALBITS > 3*RAND_BITS
3275 val
= (val
<< RAND_BITS
) ^ random ();
3276 #if VALBITS > 4*RAND_BITS
3277 val
= (val
<< RAND_BITS
) ^ random ();
3278 #endif /* need at least 5 */
3279 #endif /* need at least 4 */
3280 #endif /* need at least 3 */
3281 #endif /* need at least 2 */
3282 return val
& ((1L << VALBITS
) - 1);
3285 #ifdef WRONG_NAME_INSQUE
3298 /* If any place else asks for the TERM variable,
3299 allow it to be overridden with the EMACS_TERM variable
3300 before attempting to translate the logical name TERM. As a last
3301 resort, ask for VAX C's special idea of the TERM variable. */
3308 static char buf
[256];
3309 static struct dsc$descriptor_s equiv
3310 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3311 static struct dsc$descriptor_s d_name
3312 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3315 if (!strcmp (name
, "TERM"))
3317 val
= (char *) getenv ("EMACS_TERM");
3322 d_name
.dsc$w_length
= strlen (name
);
3323 d_name
.dsc$a_pointer
= name
;
3324 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3326 char *str
= (char *) xmalloc (eqlen
+ 1);
3327 bcopy (buf
, str
, eqlen
);
3329 /* This is a storage leak, but a pain to fix. With luck,
3330 no one will ever notice. */
3333 return (char *) getenv (name
);
3338 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3339 to force a call on the debugger from within the image. */
3343 reset_all_sys_modes ();
3344 LIB$
SIGNAL (SS$_DEBUG
);
3350 #ifdef LINK_CRTL_SHARE
3351 #ifdef SHARABLE_LIB_BUG
3352 /* Variables declared noshare and initialized in sharable libraries
3353 cannot be shared. The VMS linker incorrectly forces you to use a private
3354 version which is uninitialized... If not for this "feature", we
3355 could use the C library definition of sys_nerr and sys_errlist. */
3357 char *sys_errlist
[] =
3361 "no such file or directory",
3363 "interrupted system call",
3365 "no such device or address",
3366 "argument list too long",
3367 "exec format error",
3370 "no more processes",
3371 "not enough memory",
3372 "permission denied",
3374 "block device required",
3375 "mount devices busy",
3377 "cross-device link",
3382 "file table overflow",
3383 "too many open files",
3387 "no space left on device",
3389 "read-only file system",
3395 "vax/vms specific error code nontranslatable error"
3397 #endif /* SHARABLE_LIB_BUG */
3398 #endif /* LINK_CRTL_SHARE */
3401 #ifndef HAVE_STRERROR
3407 extern char *sys_errlist
[];
3408 extern int sys_nerr
;
3410 if (errnum
>= 0 && errnum
< sys_nerr
)
3411 return sys_errlist
[errnum
];
3412 return (char *) "Unknown error";
3414 #endif /* not WINDOWSNT */
3415 #endif /* ! HAVE_STRERROR */
3418 emacs_open (path
, oflag
, mode
)
3422 register int rtnval
;
3425 if (oflag
& O_CREAT
)
3426 return creat (path
, mode
);
3429 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3430 && (errno
== EINTR
))
3440 register int rtnval
;
3442 while ((rtnval
= close (fd
)) == -1
3443 && (errno
== EINTR
))
3446 /* If close is interrupted SunOS 4.1 may or may not have closed the
3447 file descriptor. If it did the second close will fail with
3448 errno = EBADF. That means we have succeeded. */
3449 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3456 emacs_read (fildes
, buf
, nbyte
)
3461 register int rtnval
;
3463 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3464 && (errno
== EINTR
))
3470 emacs_write (fildes
, buf
, nbyte
)
3475 register int rtnval
, bytes_written
;
3481 rtnval
= write (fildes
, buf
, nbyte
);
3488 /* I originally used `QUIT' but that might causes files to
3489 be truncated if you hit C-g in the middle of it. --Stef */
3490 if (interrupt_input_pending
)
3491 handle_async_input ();
3496 return (bytes_written
? bytes_written
: -1);
3501 bytes_written
+= rtnval
;
3503 return (bytes_written
);
3508 * All of the following are for USG.
3510 * On USG systems the system calls are INTERRUPTIBLE by signals
3511 * that the user program has elected to catch. Thus the system call
3512 * must be retried in these cases. To handle this without massive
3513 * changes in the source code, we remap the standard system call names
3514 * to names for our own functions in sysdep.c that do the system call
3515 * with retries. Actually, for portability reasons, it is good
3516 * programming practice, as this example shows, to limit all actual
3517 * system calls to a single occurrence in the source. Sure, this
3518 * adds an extra level of function call overhead but it is almost
3519 * always negligible. Fred Fish, Unisoft Systems Inc.
3523 * Warning, this function may not duplicate 4.2 action properly
3524 * under error conditions.
3528 /* In 4.1, param.h fails to define this. */
3529 #define MAXPATHLEN 1024
3538 char *npath
, *spath
;
3539 extern char *getcwd ();
3541 BLOCK_INPUT
; /* getcwd uses malloc */
3542 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3548 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3549 up to first slash. Should be harmless on other systems. */
3550 while (*npath
&& *npath
!= '/')
3552 strcpy (pathname
, npath
);
3553 free (spath
); /* getcwd uses malloc */
3558 #endif /* HAVE_GETWD */
3561 * Emulate rename using unlink/link. Note that this is
3562 * only partially correct. Also, doesn't enforce restriction
3563 * that files be of same type (regular->regular, dir->dir, etc).
3572 if (access (from
, 0) == 0)
3575 if (link (from
, to
) == 0)
3576 if (unlink (from
) == 0)
3588 /* HPUX curses library references perror, but as far as we know
3589 it won't be called. Anyway this definition will do for now. */
3595 #endif /* not HAVE_PERROR */
3601 * Emulate BSD dup2. First close newd if it already exists.
3602 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3603 * until we are, then close the unsuccessful ones.
3610 register int fd
, ret
;
3615 return fcntl (oldd
, F_DUPFD
, newd
);
3622 ret
= dup2 (old
,new);
3628 #endif /* not HAVE_DUP2 */
3631 * Gettimeofday. Simulate as much as possible. Only accurate
3632 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3633 * Only needed when subprocesses are defined.
3638 #ifndef HAVE_GETTIMEOFDAY
3643 gettimeofday (tp
, tzp
)
3645 struct timezone
*tzp
;
3647 extern long time ();
3649 tp
->tv_sec
= time ((long *)0);
3652 tzp
->tz_minuteswest
= -1;
3659 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3662 * This function will go away as soon as all the stubs fixed. (fnf)
3669 printf ("%s not yet implemented\r\n", badfunc
);
3670 reset_all_sys_modes ();
3676 /* Directory routines for systems that don't have them. */
3678 #ifdef SYSV_SYSTEM_DIR
3682 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3686 register DIR *dirp
; /* stream from opendir */
3690 rtnval
= emacs_close (dirp
->dd_fd
);
3692 /* Some systems (like Solaris) allocate the buffer and the DIR all
3693 in one block. Why in the world are we freeing this ourselves
3695 #if ! (defined (sun) && defined (USG5_4))
3696 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3698 xfree ((char *) dirp
);
3702 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3703 #endif /* SYSV_SYSTEM_DIR */
3705 #ifdef NONSYSTEM_DIR_LIBRARY
3709 char *filename
; /* name of directory */
3711 register DIR *dirp
; /* -> malloc'ed storage */
3712 register int fd
; /* file descriptor for read */
3713 struct stat sbuf
; /* result of fstat */
3715 fd
= emacs_open (filename
, O_RDONLY
, 0);
3720 if (fstat (fd
, &sbuf
) < 0
3721 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3722 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3726 return 0; /* bad luck today */
3731 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3738 register DIR *dirp
; /* stream from opendir */
3740 emacs_close (dirp
->dd_fd
);
3741 xfree ((char *) dirp
);
3749 ino_t od_ino
; /* inode */
3750 char od_name
[DIRSIZ
]; /* filename */
3752 #endif /* not VMS */
3754 struct direct dir_static
; /* simulated directory contents */
3759 register DIR *dirp
; /* stream from opendir */
3762 register struct olddir
*dp
; /* -> directory data */
3764 register struct dir$_name
*dp
; /* -> directory data */
3765 register struct dir$_version
*dv
; /* -> version data */
3770 if (dirp
->dd_loc
>= dirp
->dd_size
)
3771 dirp
->dd_loc
= dirp
->dd_size
= 0;
3773 if (dirp
->dd_size
== 0 /* refill buffer */
3774 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3778 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3779 dirp
->dd_loc
+= sizeof (struct olddir
);
3781 if (dp
->od_ino
!= 0) /* not deleted entry */
3783 dir_static
.d_ino
= dp
->od_ino
;
3784 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3785 dir_static
.d_name
[DIRSIZ
] = '\0';
3786 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3787 dir_static
.d_reclen
= sizeof (struct direct
)
3789 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3790 return &dir_static
; /* -> simulated structure */
3793 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3794 if (dirp
->dd_loc
== 0)
3795 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3796 : dp
->dir$b_namecount
;
3797 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3798 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3799 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3800 dir_static
.d_reclen
= sizeof (struct direct
)
3802 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3803 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3804 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3805 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3812 /* readdirver is just like readdir except it returns all versions of a file
3813 as separate entries. */
3818 register DIR *dirp
; /* stream from opendir */
3820 register struct dir$_name
*dp
; /* -> directory data */
3821 register struct dir$_version
*dv
; /* -> version data */
3823 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3824 dirp
->dd_loc
= dirp
->dd_size
= 0;
3826 if (dirp
->dd_size
== 0 /* refill buffer */
3827 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3830 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3831 if (dirp
->dd_loc
== 0)
3832 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3833 : dp
->dir$b_namecount
;
3834 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3835 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3836 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3837 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3838 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3839 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3840 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3841 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3847 #endif /* NONSYSTEM_DIR_LIBRARY */
3851 set_file_times (filename
, atime
, mtime
)
3852 const char *filename
;
3853 EMACS_TIME atime
, mtime
;
3856 struct timeval tv
[2];
3859 return utimes (filename
, tv
);
3860 #else /* not HAVE_UTIMES */
3862 utb
.actime
= EMACS_SECS (atime
);
3863 utb
.modtime
= EMACS_SECS (mtime
);
3864 return utime (filename
, &utb
);
3865 #endif /* not HAVE_UTIMES */
3868 /* mkdir and rmdir functions, for systems which don't have them. */
3872 * Written by Robert Rother, Mariah Corporation, August 1985.
3874 * If you want it, it's yours. All I ask in return is that if you
3875 * figure out how to do this in a Bourne Shell script you send me
3877 * sdcsvax!rmr or rmr@uscd
3879 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3880 * subroutine. 11Mar86; hoptoad!gnu
3882 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3883 * subroutine didn't return EEXIST. It does now.
3889 #ifdef MKDIR_PROTOTYPE
3893 mkdir (dpath
, dmode
)
3898 int cpid
, status
, fd
;
3899 struct stat statbuf
;
3901 if (stat (dpath
, &statbuf
) == 0)
3903 errno
= EEXIST
; /* Stat worked, so it already exists */
3907 /* If stat fails for a reason other than non-existence, return error */
3908 if (errno
!= ENOENT
)
3911 synch_process_alive
= 1;
3912 switch (cpid
= fork ())
3915 case -1: /* Error in fork */
3916 return (-1); /* Errno is set already */
3918 case 0: /* Child process */
3920 * Cheap hack to set mode of new directory. Since this
3921 * child process is going away anyway, we zap its umask.
3922 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3923 * directory. Does anybody care?
3925 status
= umask (0); /* Get current umask */
3926 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3927 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3934 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3935 _exit (-1); /* Can't exec /bin/mkdir */
3937 default: /* Parent process */
3938 wait_for_termination (cpid
);
3941 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3942 || synch_process_termsig
!= 0)
3944 errno
= EIO
; /* We don't know why, but */
3945 return -1; /* /bin/mkdir failed */
3950 #endif /* not HAVE_MKDIR */
3957 int cpid
, status
, fd
;
3958 struct stat statbuf
;
3960 if (stat (dpath
, &statbuf
) != 0)
3962 /* Stat just set errno. We don't have to */
3966 synch_process_alive
= 1;
3967 switch (cpid
= fork ())
3970 case -1: /* Error in fork */
3971 return (-1); /* Errno is set already */
3973 case 0: /* Child process */
3974 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3981 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3982 _exit (-1); /* Can't exec /bin/rmdir */
3984 default: /* Parent process */
3985 wait_for_termination (cpid
);
3988 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3989 || synch_process_termsig
!= 0)
3991 errno
= EIO
; /* We don't know why, but */
3992 return -1; /* /bin/rmdir failed */
3997 #endif /* !HAVE_RMDIR */
4001 /* Functions for VMS */
4007 /* Return as a string the VMS error string pertaining to STATUS.
4008 Reuses the same static buffer each time it is called. */
4012 int status
; /* VMS status code */
4016 static char buf
[257];
4018 bufadr
[0] = sizeof buf
- 1;
4019 bufadr
[1] = (int) buf
;
4020 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
4021 return "untranslatable VMS error status";
4029 /* The following is necessary because 'access' emulation by VMS C (2.0) does
4030 * not work correctly. (It also doesn't work well in version 2.3.)
4035 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
4036 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
4040 unsigned short s_buflen
;
4041 unsigned short s_code
;
4043 unsigned short *s_retlenadr
;
4047 #define buflen s.s_buflen
4048 #define code s.s_code
4049 #define bufadr s.s_bufadr
4050 #define retlenadr s.s_retlenadr
4052 #define R_OK 4 /* test for read permission */
4053 #define W_OK 2 /* test for write permission */
4054 #define X_OK 1 /* test for execute (search) permission */
4055 #define F_OK 0 /* test for presence of file */
4058 sys_access (path
, mode
)
4062 static char *user
= NULL
;
4065 /* translate possible directory spec into .DIR file name, so brain-dead
4066 * access can treat the directory like a file. */
4067 if (directory_file_name (path
, dir_fn
))
4071 return access (path
, mode
);
4072 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
4078 unsigned short int dummy
;
4080 static int constant
= ACL$C_FILE
;
4081 DESCRIPTOR (path_desc
, path
);
4082 DESCRIPTOR (user_desc
, user
);
4086 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
4089 acces
|= CHP$M_READ
;
4091 acces
|= CHP$M_WRITE
;
4092 itemlst
[0].buflen
= sizeof (int);
4093 itemlst
[0].code
= CHP$_FLAGS
;
4094 itemlst
[0].bufadr
= (char *) &flags
;
4095 itemlst
[0].retlenadr
= &dummy
;
4096 itemlst
[1].buflen
= sizeof (int);
4097 itemlst
[1].code
= CHP$_ACCESS
;
4098 itemlst
[1].bufadr
= (char *) &acces
;
4099 itemlst
[1].retlenadr
= &dummy
;
4100 itemlst
[2].end
= CHP$_END
;
4101 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
4102 return stat
== SS$_NORMAL
? 0 : -1;
4106 #else /* not VMS4_4 */
4109 #define ACE$M_WRITE 2
4110 #define ACE$C_KEYID 1
4112 static unsigned short memid
, grpid
;
4113 static unsigned int uic
;
4115 /* Called from init_sys_modes, so it happens not very often
4116 but at least each time Emacs is loaded. */
4118 sys_access_reinit ()
4124 sys_access (filename
, type
)
4130 int status
, size
, i
, typecode
, acl_controlled
;
4131 unsigned int *aclptr
, *aclend
, aclbuf
[60];
4132 union prvdef prvmask
;
4134 /* Get UIC and GRP values for protection checking. */
4137 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
4140 memid
= uic
& 0xFFFF;
4144 if (type
!= 2) /* not checking write access */
4145 return access (filename
, type
);
4147 /* Check write protection. */
4149 #define CHECKPRIV(bit) (prvmask.bit)
4150 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
4152 /* Find privilege bits */
4153 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
4155 error ("Unable to find privileges: %s", vmserrstr (status
));
4156 if (CHECKPRIV (PRV$V_BYPASS
))
4157 return 0; /* BYPASS enabled */
4159 fab
.fab$b_fac
= FAB$M_GET
;
4160 fab
.fab$l_fna
= filename
;
4161 fab
.fab$b_fns
= strlen (filename
);
4162 fab
.fab$l_xab
= &xab
;
4163 xab
= cc$rms_xabpro
;
4164 xab
.xab$l_aclbuf
= aclbuf
;
4165 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
4166 status
= SYS$
OPEN (&fab
, 0, 0);
4169 SYS$
CLOSE (&fab
, 0, 0);
4170 /* Check system access */
4171 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
4173 /* Check ACL entries, if any */
4175 if (xab
.xab$w_acllen
> 0)
4178 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
4179 while (*aclptr
&& aclptr
< aclend
)
4181 size
= (*aclptr
& 0xff) / 4;
4182 typecode
= (*aclptr
>> 8) & 0xff;
4183 if (typecode
== ACE$C_KEYID
)
4184 for (i
= size
- 1; i
> 1; i
--)
4185 if (aclptr
[i
] == uic
)
4188 if (aclptr
[1] & ACE$M_WRITE
)
4189 return 0; /* Write access through ACL */
4191 aclptr
= &aclptr
[size
];
4193 if (acl_controlled
) /* ACL specified, prohibits write access */
4196 /* No ACL entries specified, check normal protection */
4197 if (WRITABLE (XAB$V_WLD
)) /* World writable */
4199 if (WRITABLE (XAB$V_GRP
) &&
4200 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4201 return 0; /* Group writable */
4202 if (WRITABLE (XAB$V_OWN
) &&
4203 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4204 return 0; /* Owner writable */
4206 return -1; /* Not writable */
4208 #endif /* not VMS4_4 */
4211 static char vtbuf
[NAM$C_MAXRSS
+1];
4213 /* translate a vms file spec to a unix path */
4215 sys_translate_vms (vfile
)
4226 /* leading device or logical name is a root directory */
4227 if (p
= strchr (vfile
, ':'))
4236 if (*p
== '[' || *p
== '<')
4238 while (*++vfile
!= *p
+ 2)
4242 if (vfile
[-1] == *p
)
4265 static char utbuf
[NAM$C_MAXRSS
+1];
4267 /* translate a unix path to a VMS file spec */
4269 sys_translate_unix (ufile
)
4292 if (index (&ufile
[1], '/'))
4299 if (index (&ufile
[1], '/'))
4306 if (strncmp (ufile
, "./", 2) == 0)
4313 ufile
++; /* skip the dot */
4314 if (index (&ufile
[1], '/'))
4319 else if (strncmp (ufile
, "../", 3) == 0)
4327 ufile
+= 2; /* skip the dots */
4328 if (index (&ufile
[1], '/'))
4353 extern char *getcwd ();
4355 #define MAXPATHLEN 1024
4357 ptr
= xmalloc (MAXPATHLEN
);
4358 val
= getcwd (ptr
, MAXPATHLEN
);
4364 strcpy (pathname
, ptr
);
4373 long item_code
= JPI$_OWNER
;
4374 unsigned long parent_id
;
4377 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4380 vaxc$errno
= status
;
4390 return (getgid () << 16) | getuid ();
4395 sys_read (fildes
, buf
, nbyte
)
4400 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4405 sys_write (fildes
, buf
, nbyte
)
4410 register int nwrote
, rtnval
= 0;
4412 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4418 return rtnval
? rtnval
: -1;
4419 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4420 return rtnval
? rtnval
: -1;
4421 return (rtnval
+ nwrote
);
4426 * VAX/VMS VAX C RTL really loses. It insists that records
4427 * end with a newline (carriage return) character, and if they
4428 * don't it adds one (nice of it isn't it!)
4430 * Thus we do this stupidity below.
4435 sys_write (fildes
, buf
, nbytes
)
4438 unsigned int nbytes
;
4445 fstat (fildes
, &st
);
4451 /* Handle fixed-length files with carriage control. */
4452 if (st
.st_fab_rfm
== FAB$C_FIX
4453 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4455 len
= st
.st_fab_mrs
;
4456 retval
= write (fildes
, p
, min (len
, nbytes
));
4459 retval
++; /* This skips the implied carriage control */
4463 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4464 while (*e
!= '\n' && e
> p
) e
--;
4465 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4466 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4468 retval
= write (fildes
, p
, len
);
4479 /* Create file NEW copying its attributes from file OLD. If
4480 OLD is 0 or does not exist, create based on the value of
4483 /* Protection value the file should ultimately have.
4484 Set by create_copy_attrs, and use by rename_sansversions. */
4485 static unsigned short int fab_final_pro
;
4488 creat_copy_attrs (old
, new)
4491 struct FAB fab
= cc$rms_fab
;
4492 struct XABPRO xabpro
;
4493 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4494 extern int vms_stmlf_recfm
;
4498 fab
.fab$b_fac
= FAB$M_GET
;
4499 fab
.fab$l_fna
= old
;
4500 fab
.fab$b_fns
= strlen (old
);
4501 fab
.fab$l_xab
= (char *) &xabpro
;
4502 xabpro
= cc$rms_xabpro
;
4503 xabpro
.xab$l_aclbuf
= aclbuf
;
4504 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4505 /* Call $OPEN to fill in the fab & xabpro fields. */
4506 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4508 SYS$
CLOSE (&fab
, 0, 0);
4509 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4510 if (xabpro
.xab$w_acllen
> 0)
4512 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4513 /* If the acl buffer was too short, redo open with longer one.
4514 Wouldn't need to do this if there were some system imposed
4515 limit on the size of an ACL, but I can't find any such. */
4517 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4518 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4519 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4520 SYS$
CLOSE (&fab
, 0, 0);
4526 xabpro
.xab$l_aclbuf
= 0;
4531 fab
.fab$l_fna
= new;
4532 fab
.fab$b_fns
= strlen (new);
4536 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4537 fab
.fab$b_rat
= FAB$M_CR
;
4540 /* Set the file protections such that we will be able to manipulate
4541 this file. Once we are done writing and renaming it, we will set
4542 the protections back. */
4544 fab_final_pro
= xabpro
.xab$w_pro
;
4546 SYS$
SETDFPROT (0, &fab_final_pro
);
4547 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4549 /* Create the new file with either default attrs or attrs copied
4551 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4553 SYS$
CLOSE (&fab
, 0, 0);
4554 /* As this is a "replacement" for creat, return a file descriptor
4555 opened for writing. */
4556 return open (new, O_WRONLY
);
4561 #include <varargs.h>
4564 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4569 sys_creat (va_alist
)
4572 va_list list_incrementer
;
4575 int rfd
; /* related file descriptor */
4576 int fd
; /* Our new file descriptor */
4583 extern int vms_stmlf_recfm
;
4586 va_start (list_incrementer
);
4587 name
= va_arg (list_incrementer
, char *);
4588 mode
= va_arg (list_incrementer
, int);
4590 rfd
= va_arg (list_incrementer
, int);
4591 va_end (list_incrementer
);
4594 /* Use information from the related file descriptor to set record
4595 format of the newly created file. */
4596 fstat (rfd
, &st_buf
);
4597 switch (st_buf
.st_fab_rfm
)
4600 strcpy (rfm
, "rfm = fix");
4601 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4602 strcpy (rat
, "rat = ");
4603 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4605 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4606 strcat (rat
, "ftn");
4607 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4608 strcat (rat
, "prn");
4609 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4610 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4611 strcat (rat
, ", blk");
4613 strcat (rat
, "blk");
4614 return creat (name
, 0, rfm
, rat
, mrs
);
4617 strcpy (rfm
, "rfm = vfc");
4618 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4619 strcpy (rat
, "rat = ");
4620 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4622 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4623 strcat (rat
, "ftn");
4624 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4625 strcat (rat
, "prn");
4626 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4627 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4628 strcat (rat
, ", blk");
4630 strcat (rat
, "blk");
4631 return creat (name
, 0, rfm
, rat
, fsz
);
4634 strcpy (rfm
, "rfm = stm");
4638 strcpy (rfm
, "rfm = stmcr");
4642 strcpy (rfm
, "rfm = stmlf");
4646 strcpy (rfm
, "rfm = udf");
4650 strcpy (rfm
, "rfm = var");
4653 strcpy (rat
, "rat = ");
4654 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4656 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4657 strcat (rat
, "ftn");
4658 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4659 strcat (rat
, "prn");
4660 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4661 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4662 strcat (rat
, ", blk");
4664 strcat (rat
, "blk");
4668 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4669 strcpy (rat
, "rat=cr");
4671 /* Until the VAX C RTL fixes the many bugs with modes, always use
4672 mode 0 to get the user's default protection. */
4673 fd
= creat (name
, 0, rfm
, rat
);
4674 if (fd
< 0 && errno
== EEXIST
)
4676 if (unlink (name
) < 0)
4677 report_file_error ("delete", build_string (name
));
4678 fd
= creat (name
, 0, rfm
, rat
);
4684 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4686 sys_fwrite (ptr
, size
, num
, fp
)
4687 register char * ptr
;
4690 register int tot
= num
* size
;
4698 * The VMS C library routine creat actually creates a new version of an
4699 * existing file rather than truncating the old version. There are times
4700 * when this is not the desired behavior, for instance, when writing an
4701 * auto save file (you only want one version), or when you don't have
4702 * write permission in the directory containing the file (but the file
4703 * itself is writable). Hence this routine, which is equivalent to
4704 * "close (creat (fn, 0));" on Unix if fn already exists.
4710 struct FAB xfab
= cc$rms_fab
;
4711 struct RAB xrab
= cc$rms_rab
;
4714 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4715 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4716 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4717 xfab
.fab$l_fna
= fn
;
4718 xfab
.fab$b_fns
= strlen (fn
);
4719 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4721 xrab
.rab$l_fab
= &xfab
;
4723 /* This gibberish opens the file, positions to the first record, and
4724 deletes all records from there until the end of file. */
4725 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4727 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4728 (SYS$
FIND (&xrab
) & 01) == 01 &&
4729 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4740 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4741 SYSPRV or a readable SYSUAF.DAT. */
4747 * Routine to read the VMS User Authorization File and return
4748 * a specific user's record.
4751 static struct UAF retuaf
;
4754 get_uaf_name (uname
)
4761 uaf_fab
= cc$rms_fab
;
4762 uaf_rab
= cc$rms_rab
;
4763 /* initialize fab fields */
4764 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4765 uaf_fab
.fab$b_fns
= 21;
4766 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4767 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4768 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4769 /* initialize rab fields */
4770 uaf_rab
.rab$l_fab
= &uaf_fab
;
4771 /* open the User Authorization File */
4772 status
= SYS$
OPEN (&uaf_fab
);
4776 vaxc$errno
= status
;
4779 status
= SYS$
CONNECT (&uaf_rab
);
4783 vaxc$errno
= status
;
4786 /* read the requested record - index is in uname */
4787 uaf_rab
.rab$l_kbf
= uname
;
4788 uaf_rab
.rab$b_ksz
= strlen (uname
);
4789 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4790 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4791 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4792 status
= SYS$
GET (&uaf_rab
);
4796 vaxc$errno
= status
;
4799 /* close the User Authorization File */
4800 status
= SYS$
DISCONNECT (&uaf_rab
);
4804 vaxc$errno
= status
;
4807 status
= SYS$
CLOSE (&uaf_fab
);
4811 vaxc$errno
= status
;
4825 uaf_fab
= cc$rms_fab
;
4826 uaf_rab
= cc$rms_rab
;
4827 /* initialize fab fields */
4828 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4829 uaf_fab
.fab$b_fns
= 21;
4830 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4831 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4832 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4833 /* initialize rab fields */
4834 uaf_rab
.rab$l_fab
= &uaf_fab
;
4835 /* open the User Authorization File */
4836 status
= SYS$
OPEN (&uaf_fab
);
4840 vaxc$errno
= status
;
4843 status
= SYS$
CONNECT (&uaf_rab
);
4847 vaxc$errno
= status
;
4850 /* read the requested record - index is in uic */
4851 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4852 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4853 uaf_rab
.rab$b_ksz
= sizeof uic
;
4854 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4855 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4856 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4857 status
= SYS$
GET (&uaf_rab
);
4861 vaxc$errno
= status
;
4864 /* close the User Authorization File */
4865 status
= SYS$
DISCONNECT (&uaf_rab
);
4869 vaxc$errno
= status
;
4872 status
= SYS$
CLOSE (&uaf_fab
);
4876 vaxc$errno
= status
;
4882 static struct passwd retpw
;
4890 /* copy these out first because if the username is 32 chars, the next
4891 section will overwrite the first byte of the UIC */
4892 retpw
.pw_uid
= up
->uaf$w_mem
;
4893 retpw
.pw_gid
= up
->uaf$w_grp
;
4895 /* I suppose this is not the best style, to possibly overwrite one
4896 byte beyond the end of the field, but what the heck... */
4897 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4898 while (ptr
[-1] == ' ')
4901 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4903 /* the rest of these are counted ascii strings */
4904 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4905 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4906 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4907 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4908 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4909 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4910 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4911 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4915 #else /* not READ_SYSUAF */
4916 static struct passwd retpw
;
4917 #endif /* not READ_SYSUAF */
4928 unsigned char * full
;
4929 #endif /* READ_SYSUAF */
4934 if ('a' <= *ptr
&& *ptr
<= 'z')
4939 if (!(up
= get_uaf_name (name
)))
4941 return cnv_uaf_pw (up
);
4943 if (strcmp (name
, getenv ("USER")) == 0)
4945 retpw
.pw_uid
= getuid ();
4946 retpw
.pw_gid
= getgid ();
4947 strcpy (retpw
.pw_name
, name
);
4948 if (full
= egetenv ("FULLNAME"))
4949 strcpy (retpw
.pw_gecos
, full
);
4951 *retpw
.pw_gecos
= '\0';
4952 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4953 *retpw
.pw_shell
= '\0';
4958 #endif /* not READ_SYSUAF */
4968 if (!(up
= get_uaf_uic (uid
)))
4970 return cnv_uaf_pw (up
);
4972 if (uid
== sys_getuid ())
4973 return getpwnam (egetenv ("USER"));
4976 #endif /* not READ_SYSUAF */
4979 /* return total address space available to the current process. This is
4980 the sum of the current p0 size, p1 size and free page table entries
4986 unsigned long free_pages
;
4987 unsigned long frep0va
;
4988 unsigned long frep1va
;
4991 item_code
= JPI$_FREPTECNT
;
4992 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4995 vaxc$errno
= status
;
5000 item_code
= JPI$_FREP0VA
;
5001 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
5004 vaxc$errno
= status
;
5007 item_code
= JPI$_FREP1VA
;
5008 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
5011 vaxc$errno
= status
;
5015 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
5019 define_logical_name (varname
, string
)
5023 struct dsc$descriptor_s strdsc
=
5024 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
5025 struct dsc$descriptor_s envdsc
=
5026 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
5027 struct dsc$descriptor_s lnmdsc
=
5028 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
5030 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
5034 delete_logical_name (varname
)
5037 struct dsc$descriptor_s envdsc
=
5038 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
5039 struct dsc$descriptor_s lnmdsc
=
5040 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
5042 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
5060 error ("execvp system call not implemented");
5069 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
5070 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
5071 char from_esn
[NAM$C_MAXRSS
];
5072 char to_esn
[NAM$C_MAXRSS
];
5074 from_fab
.fab$l_fna
= from
;
5075 from_fab
.fab$b_fns
= strlen (from
);
5076 from_fab
.fab$l_nam
= &from_nam
;
5077 from_fab
.fab$l_fop
= FAB$M_NAM
;
5079 from_nam
.nam$l_esa
= from_esn
;
5080 from_nam
.nam$b_ess
= sizeof from_esn
;
5082 to_fab
.fab$l_fna
= to
;
5083 to_fab
.fab$b_fns
= strlen (to
);
5084 to_fab
.fab$l_nam
= &to_nam
;
5085 to_fab
.fab$l_fop
= FAB$M_NAM
;
5087 to_nam
.nam$l_esa
= to_esn
;
5088 to_nam
.nam$b_ess
= sizeof to_esn
;
5090 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
5096 if (status
== RMS$_DEV
)
5100 vaxc$errno
= status
;
5105 /* This function renames a file like `rename', but it strips
5106 the version number from the "to" filename, such that the "to" file is
5107 will always be a new version. It also sets the file protection once it is
5108 finished. The protection that we will use is stored in fab_final_pro,
5109 and was set when we did a creat_copy_attrs to create the file that we
5112 We could use the chmod function, but Eunichs uses 3 bits per user category
5113 to describe the protection, and VMS uses 4 (write and delete are separate
5114 bits). To maintain portability, the VMS implementation of `chmod' wires
5115 the W and D bits together. */
5118 static struct fibdef fib
; /* We need this initialized to zero */
5119 char vms_file_written
[NAM$C_MAXRSS
];
5122 rename_sans_version (from
,to
)
5129 struct FAB to_fab
= cc$rms_fab
;
5130 struct NAM to_nam
= cc$rms_nam
;
5131 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
5132 struct dsc$descriptor fib_attr
[2]
5133 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
5134 char to_esn
[NAM$C_MAXRSS
];
5136 $
DESCRIPTOR (disk
,to_esn
);
5138 to_fab
.fab$l_fna
= to
;
5139 to_fab
.fab$b_fns
= strlen (to
);
5140 to_fab
.fab$l_nam
= &to_nam
;
5141 to_fab
.fab$l_fop
= FAB$M_NAM
;
5143 to_nam
.nam$l_esa
= to_esn
;
5144 to_nam
.nam$b_ess
= sizeof to_esn
;
5146 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
5148 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
5149 *(to_nam
.nam$l_ver
) = '\0';
5151 stat
= rename (from
, to_esn
);
5155 strcpy (vms_file_written
, to_esn
);
5157 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
5158 to_fab
.fab$b_fns
= strlen (vms_file_written
);
5160 /* Now set the file protection to the correct value */
5161 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
5163 /* Copy these fields into the fib */
5164 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
5165 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
5166 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
5168 SYS$
CLOSE (&to_fab
, 0, 0);
5170 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
5173 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
5174 0, 0, 0, &fib_attr
, 0);
5177 stat
= SYS$
DASSGN (chan
);
5180 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
5191 unsigned short fid
[3];
5192 char esa
[NAM$C_MAXRSS
];
5195 fab
.fab$l_fop
= FAB$M_OFP
;
5196 fab
.fab$l_fna
= file
;
5197 fab
.fab$b_fns
= strlen (file
);
5198 fab
.fab$l_nam
= &nam
;
5201 nam
.nam$l_esa
= esa
;
5202 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5204 status
= SYS$
PARSE (&fab
);
5205 if ((status
& 1) == 0)
5208 vaxc$errno
= status
;
5211 status
= SYS$
SEARCH (&fab
);
5212 if ((status
& 1) == 0)
5215 vaxc$errno
= status
;
5219 fid
[0] = nam
.nam$w_fid
[0];
5220 fid
[1] = nam
.nam$w_fid
[1];
5221 fid
[2] = nam
.nam$w_fid
[2];
5223 fab
.fab$l_fna
= new;
5224 fab
.fab$b_fns
= strlen (new);
5226 status
= SYS$
PARSE (&fab
);
5227 if ((status
& 1) == 0)
5230 vaxc$errno
= status
;
5234 nam
.nam$w_fid
[0] = fid
[0];
5235 nam
.nam$w_fid
[1] = fid
[1];
5236 nam
.nam$w_fid
[2] = fid
[2];
5238 nam
.nam$l_esa
= nam
.nam$l_name
;
5239 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5241 status
= SYS$
ENTER (&fab
);
5242 if ((status
& 1) == 0)
5245 vaxc$errno
= status
;
5256 printf ("%s not yet implemented\r\n", badfunc
);
5257 reset_all_sys_modes ();
5264 /* Arrange to return a range centered on zero. */
5265 return rand () - (1 << 30);
5277 /* Called from init_sys_modes. */
5279 hft_init (struct tty_display_info
*tty_out
)
5283 /* If we're not on an HFT we shouldn't do any of this. We determine
5284 if we are on an HFT by trying to get an HFT error code. If this
5285 call fails, we're not on an HFT. */
5287 if (ioctl (0, HFQERROR
, &junk
) < 0)
5289 #else /* not IBMR2AIX */
5290 if (ioctl (0, HFQEIO
, 0) < 0)
5292 #endif /* not IBMR2AIX */
5294 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5295 as the rubout key's ASCII code. Here this is changed. The bug is that
5296 there's no way to determine the old mapping, so in reset_sys_modes
5297 we need to assume that the normal map had been present. Of course, this
5298 code also doesn't help if on a terminal emulator which doesn't understand
5302 struct hfkeymap keymap
;
5304 buf
.hf_bufp
= (char *)&keymap
;
5305 buf
.hf_buflen
= sizeof (keymap
);
5306 keymap
.hf_nkeys
= 2;
5307 keymap
.hfkey
[0].hf_kpos
= 15;
5308 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5310 keymap
.hfkey
[0].hf_keyidh
= '<';
5311 #else /* not IBMR2AIX */
5312 keymap
.hfkey
[0].hf_page
= '<';
5313 #endif /* not IBMR2AIX */
5314 keymap
.hfkey
[0].hf_char
= 127;
5315 keymap
.hfkey
[1].hf_kpos
= 15;
5316 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5318 keymap
.hfkey
[1].hf_keyidh
= '<';
5319 #else /* not IBMR2AIX */
5320 keymap
.hfkey
[1].hf_page
= '<';
5321 #endif /* not IBMR2AIX */
5322 keymap
.hfkey
[1].hf_char
= 127;
5323 hftctl (0, HFSKBD
, &buf
);
5327 /* Reset the rubout key to backspace. */
5330 hft_reset (struct tty_display_info
*tty_out
)
5333 struct hfkeymap keymap
;
5337 if (ioctl (0, HFQERROR
, &junk
) < 0)
5339 #else /* not IBMR2AIX */
5340 if (ioctl (0, HFQEIO
, 0) < 0)
5342 #endif /* not IBMR2AIX */
5344 buf
.hf_bufp
= (char *)&keymap
;
5345 buf
.hf_buflen
= sizeof (keymap
);
5346 keymap
.hf_nkeys
= 2;
5347 keymap
.hfkey
[0].hf_kpos
= 15;
5348 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5350 keymap
.hfkey
[0].hf_keyidh
= '<';
5351 #else /* not IBMR2AIX */
5352 keymap
.hfkey
[0].hf_page
= '<';
5353 #endif /* not IBMR2AIX */
5354 keymap
.hfkey
[0].hf_char
= 8;
5355 keymap
.hfkey
[1].hf_kpos
= 15;
5356 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5358 keymap
.hfkey
[1].hf_keyidh
= '<';
5359 #else /* not IBMR2AIX */
5360 keymap
.hfkey
[1].hf_page
= '<';
5361 #endif /* not IBMR2AIX */
5362 keymap
.hfkey
[1].hf_char
= 8;
5363 hftctl (0, HFSKBD
, &buf
);
5370 /* These are included on Sunos 4.1 when we do not use shared libraries.
5371 X11 libraries may refer to these functions but (we hope) do not
5372 actually call them. */
5392 #endif /* USE_DL_STUBS */
5401 register int length
;
5405 long max_str
= 65535;
5407 while (length
> max_str
) {
5408 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5413 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5415 while (length
-- > 0)
5417 #endif /* not VMS */
5420 #endif /* no bzero */
5421 #endif /* BSTRING */
5423 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5426 /* Saying `void' requires a declaration, above, where bcopy is used
5427 and that declaration causes pain for systems where bcopy is a macro. */
5428 bcopy (b1
, b2
, length
)
5431 register int length
;
5434 long max_str
= 65535;
5436 while (length
> max_str
) {
5437 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5443 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5445 while (length
-- > 0)
5447 #endif /* not VMS */
5449 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5454 bcmp (b1
, b2
, length
) /* This could be a macro! */
5457 register int length
;
5460 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5461 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5463 return STR$
COMPARE (&src1
, &src2
);
5465 while (length
-- > 0)
5470 #endif /* not VMS */
5472 #endif /* no bcmp */
5473 #endif /* not BSTRING */
5475 #ifndef HAVE_STRSIGNAL
5482 if (0 <= code
&& code
< NSIG
)
5485 signame
= sys_errlist
[code
];
5487 /* Cast to suppress warning if the table has const char *. */
5488 signame
= (char *) sys_siglist
[code
];
5494 #endif /* HAVE_STRSIGNAL */
5496 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5497 (do not change this comment) */