1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
27 #include "blockinput.h"
30 #define min(x,y) ((x) > (y) ? (y) : (x))
32 /* In this file, open, read and write refer to the system calls,
33 not our sugared interfaces sys_open, sys_read and sys_write.
34 Contrariwise, for systems where we use the system calls directly,
35 define sys_read, etc. here as aliases for them. */
38 #define sys_write write
39 #endif /* `read' is not a macro */
49 #endif /* not WINDOWSNT */
52 #define sys_close close
59 #else /* `open' is a macro */
61 #endif /* `open' is a macro */
63 /* Does anyone other than VMS need this? */
65 #define sys_fwrite fwrite
75 #include <sys/types.h>
79 /* Get _POSIX_VDISABLE, if it is available. */
84 /* Get SI_SRPC_DOMAIN, if it is available. */
85 #ifdef HAVE_SYS_SYSTEMINFO_H
86 #include <sys/systeminfo.h>
89 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
93 #include <sys/param.h>
97 extern unsigned start
__asm__ ("start");
115 #include <sys/file.h>
123 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
127 #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG)
128 because the vms compiler doesn't grok `defined' */
136 #endif /* not 4.1 bsd */
139 #include <sys/ioctl.h>
144 #ifdef BROKEN_TIOCGWINSZ
150 #include <sys/utsname.h>
152 #ifndef MEMORY_IN_STRING_H
155 #if defined (TIOCGWINSZ) || defined (ISC4_0)
157 #include <sys/sioctl.h>
160 #include <sys/stream.h>
161 #include <sys/ptem.h>
163 #endif /* TIOCGWINSZ or ISC4_0 */
166 extern int quit_char
;
170 #include "termhooks.h"
171 #include "termchar.h"
172 #include "termopts.h"
173 #include "dispextern.h"
178 /* In process.h which conflicts with the local copy. */
180 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
181 int _CRTAPI1
_getpid (void);
184 #ifdef NONSYSTEM_DIR_LIBRARY
186 #endif /* NONSYSTEM_DIR_LIBRARY */
188 #include "syssignal.h"
195 #ifndef HAVE_STRUCT_UTIMBUF
196 /* We want to use utime rather than utimes, but we couldn't find the
197 structure declaration. We'll use the traditional one. */
205 #ifndef VFORK_RETURN_TYPE
206 #define VFORK_RETURN_TYPE int
209 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
215 #define LNOFLSH 0100000
218 static int baud_convert
[] =
223 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
224 1800, 2400, 4800, 9600, 19200, 38400
230 /* The file descriptor for Emacs's input terminal.
231 Under Unix, this is normally zero except when using X;
232 under VMS, we place the input channel number here. */
235 /* Specify a different file descriptor for further input operations. */
244 /* Discard pending input on descriptor input_fd. */
249 struct emacs_tty buf
;
254 /* Discarding input is not safe when the input could contain
255 replies from the X server. So don't do it. */
256 if (read_socket_hook
)
261 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
262 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
268 ioctl (input_fd
, TIOCFLUSH
, &zero
);
270 #else /* not Apollo */
271 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
272 while (dos_keyread () != -1)
274 #else /* not MSDOS */
275 EMACS_GET_TTY (input_fd
, &buf
);
276 EMACS_SET_TTY (input_fd
, &buf
, 0);
277 #endif /* not MSDOS */
278 #endif /* not Apollo */
280 #endif /* not WINDOWSNT */
285 /* Arrange for character C to be read as the next input from
291 if (read_socket_hook
)
294 /* Should perhaps error if in batch mode */
296 ioctl (input_fd
, TIOCSTI
, &c
);
297 #else /* no TIOCSTI */
298 error ("Cannot stuff terminal input characters in this version of Unix");
299 #endif /* no TIOCSTI */
312 #else /* not DOS_NT */
316 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
317 &sg
.class, 12, 0, 0, 0, 0 );
318 ospeed
= sg
.xmit_baud
;
324 tcgetattr (input_fd
, &sg
);
325 ospeed
= cfgetospeed (&sg
);
326 #if defined (USE_GETOBAUD) && defined (getobaud)
327 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
329 ospeed
= getobaud (sg
.c_cflag
);
331 #else /* neither VMS nor TERMIOS */
337 tcgetattr (input_fd
, &sg
);
339 ioctl (input_fd
, TCGETA
, &sg
);
341 ospeed
= sg
.c_cflag
& CBAUD
;
342 #else /* neither VMS nor TERMIOS nor TERMIO */
345 sg
.sg_ospeed
= B9600
;
346 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
348 ospeed
= sg
.sg_ospeed
;
349 #endif /* not HAVE_TERMIO */
350 #endif /* not HAVE_TERMIOS */
352 #endif /* not DOS_NT */
355 baud_rate
= (ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
356 ? baud_convert
[ospeed
] : 9600);
362 set_exclusive_use (fd
)
366 ioctl (fd
, FIOCLEX
, 0);
368 /* Ok to do nothing if this feature does not exist */
373 wait_without_blocking ()
376 wait3 (0, WNOHANG
| WUNTRACED
, 0);
378 croak ("wait_without_blocking");
380 synch_process_alive
= 0;
383 #endif /* not subprocesses */
385 int wait_debugging
; /* Set nonzero to make following function work under dbx
386 (at least for bsd). */
389 wait_for_termination_signal ()
392 /* Wait for subprocess with process id `pid' to terminate and
393 make sure it will get eliminated (not remain forever as a zombie) */
395 wait_for_termination (pid
)
404 status
= SYS$
FORCEX (&pid
, 0, 0);
407 #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5))
408 /* Note that kill returns -1 even if the process is just a zombie now.
409 But inevitably a SIGCHLD interrupt should be generated
410 and child_sig will do wait3 and make the process go away. */
411 /* There is some indication that there is a bug involved with
412 termination of subprocesses, perhaps involving a kernel bug too,
413 but no idea what it is. Just as a hunch we signal SIGCHLD to see
414 if that causes the problem to go away or get worse. */
415 sigsetmask (sigmask (SIGCHLD
));
416 if (0 > kill (pid
, 0))
418 sigsetmask (SIGEMPTYMASK
);
419 kill (getpid (), SIGCHLD
);
425 sigpause (SIGEMPTYMASK
);
426 #else /* not BSD, and not HPUX version >= 6 */
427 #if defined (UNIPLUS)
428 if (0 > kill (pid
, 0))
431 #else /* neither BSD nor UNIPLUS: random sysV */
432 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
433 sigblock (sigmask (SIGCHLD
));
434 if (0 > kill (pid
, 0))
436 sigunblock (sigmask (SIGCHLD
));
439 sigpause (SIGEMPTYMASK
);
440 #else /* not POSIX_SIGNALS */
441 #ifdef HAVE_SYSV_SIGPAUSE
443 if (0 > kill (pid
, 0))
449 #else /* not HAVE_SYSV_SIGPAUSE */
453 #else /* not WINDOWSNT */
454 if (0 > kill (pid
, 0))
456 /* Using sleep instead of pause avoids timing error.
457 If the inferior dies just before the sleep,
458 we lose just one second. */
460 #endif /* not WINDOWSNT */
461 #endif /* not HAVE_SYSV_SIGPAUSE */
462 #endif /* not POSIX_SIGNALS */
463 #endif /* not UNIPLUS */
464 #endif /* not BSD, and not HPUX version >= 6 */
466 #else /* not subprocesses */
469 #else /* not __DJGPP__ > 1 */
471 if (kill (pid
, 0) < 0)
477 if (status
== pid
|| status
== -1)
480 #endif /* not __DJGPP__ > 1*/
481 #endif /* not subprocesses */
488 * flush any pending output
489 * (may flush input as well; it does not matter the way we use it)
492 flush_pending_output (channel
)
496 /* If we try this, we get hit with SIGTTIN, because
497 the child's tty belongs to the child's pgrp. */
500 ioctl (channel
, TCFLSH
, 1);
504 /* 3rd arg should be ignored
505 but some 4.2 kernels actually want the address of an int
506 and nonzero means something different. */
507 ioctl (channel
, TIOCFLUSH
, &zero
);
514 /* Set up the terminal at the other end of a pseudo-terminal that
515 we will be controlling an inferior through.
516 It should not echo or do line-editing, since that is done
517 in Emacs. No padding needed for insertion into an Emacs buffer. */
519 child_setup_tty (out
)
525 EMACS_GET_TTY (out
, &s
);
527 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
528 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
529 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
531 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
532 /* No output delays */
534 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
535 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
537 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
540 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
543 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
545 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
546 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
548 /* Said to be unnecessary: */
549 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
550 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
553 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
554 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
555 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
556 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
559 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
563 /* AIX enhanced edit loses NULs, so disable it */
566 s
.main
.c_iflag
&= ~ASCEDIT
;
568 /* Also, PTY overloads NUL and BREAK.
569 don't ignore break, but don't signal either, so it looks like NUL. */
570 s
.main
.c_iflag
&= ~IGNBRK
;
571 s
.main
.c_iflag
&= ~BRKINT
;
572 /* QUIT and INTR work better as signals, so disable character forms */
573 s
.main
.c_cc
[VINTR
] = 0377;
574 #ifdef SIGNALS_VIA_CHARACTERS
575 /* the QUIT and INTR character are used in process_send_signal
576 so set them here to something useful. */
577 if (s
.main
.c_cc
[VQUIT
] == 0377)
578 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
579 if (s
.main
.c_cc
[VINTR
] == 0377)
580 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
581 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
582 /* QUIT and INTR work better as signals, so disable character forms */
583 s
.main
.c_cc
[VQUIT
] = 0377;
584 s
.main
.c_cc
[VINTR
] = 0377;
585 s
.main
.c_lflag
&= ~ISIG
;
586 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
587 s
.main
.c_cc
[VEOL
] = 0377;
588 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
591 #else /* not HAVE_TERMIO */
593 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
595 s
.main
.sg_flags
|= LPASS8
;
596 s
.main
.sg_erase
= 0377;
597 s
.main
.sg_kill
= 0377;
598 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
600 #endif /* not HAVE_TERMIO */
602 EMACS_SET_TTY (out
, &s
, 0);
611 ioctl (out
, FIOASYNC
, &zero
);
614 #endif /* not DOS_NT */
618 #endif /* subprocesses */
620 /* Record a signal code and the handler for it. */
624 SIGTYPE (*handler
) ();
627 /* Suspend the Emacs process; give terminal to its superior. */
632 /* "Foster" parentage allows emacs to return to a subprocess that attached
633 to the current emacs as a cheaper than starting a whole new process. This
634 is set up by KEPTEDITOR.COM. */
635 unsigned long parent_id
, foster_parent_id
;
638 fpid_string
= getenv ("EMACS_PARENT_PID");
639 if (fpid_string
!= NULL
)
641 sscanf (fpid_string
, "%x", &foster_parent_id
);
642 if (foster_parent_id
!= 0)
643 parent_id
= foster_parent_id
;
645 parent_id
= getppid ();
648 parent_id
= getppid ();
650 xfree (fpid_string
); /* On VMS, this was malloc'd */
652 if (parent_id
&& parent_id
!= 0xffffffff)
654 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
655 int status
= LIB$
ATTACH (&parent_id
) & 1;
656 signal (SIGINT
, oldsig
);
665 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
666 d_prompt
.a
= "Emacs: "; /* Just a reminder */
667 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
672 #if defined(SIGTSTP) && !defined(MSDOS)
675 int pgrp
= EMACS_GETPGRP (0);
676 EMACS_KILLPG (pgrp
, SIGTSTP
);
679 #else /* No SIGTSTP */
680 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
681 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
682 kill (getpid (), SIGQUIT
);
684 #else /* No SIGTSTP or USG_JOBCTRL */
686 /* On a system where suspending is not implemented,
687 instead fork a subshell and let it talk directly to the terminal
691 #endif /* no USG_JOBCTRL */
692 #endif /* no SIGTSTP */
696 /* Fork a subshell. */
701 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
703 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
706 struct save_signal saved_handlers
[5];
708 unsigned char *str
= 0;
711 saved_handlers
[0].code
= SIGINT
;
712 saved_handlers
[1].code
= SIGQUIT
;
713 saved_handlers
[2].code
= SIGTERM
;
715 saved_handlers
[3].code
= SIGIO
;
716 saved_handlers
[4].code
= 0;
718 saved_handlers
[3].code
= 0;
721 /* Mentioning current_buffer->buffer would mean including buffer.h,
722 which somehow wedges the hp compiler. So instead... */
724 dir
= intern ("default-directory");
725 if (NILP (Fboundp (dir
)))
727 dir
= Fsymbol_value (dir
);
731 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
732 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
733 len
= XSTRING (dir
)->size
;
734 bcopy (XSTRING (dir
)->data
, str
, len
);
735 if (str
[len
- 1] != '/') str
[len
++] = '/';
741 #else /* not WINDOWSNT */
746 save_signal_handlers (saved_handlers
);
747 synch_process_alive
= 1;
748 #endif /* __DJGPP__ > 1 */
752 error ("Can't spawn subshell");
756 #endif /* not WINDOWSNT */
760 #ifdef MSDOS /* MW, Aug 1993 */
763 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
766 sh
= (char *) egetenv ("SHELL");
770 /* Use our buffer's default directory for the subshell. */
775 close_process_descs (); /* Close Emacs's pipes/ptys */
778 #ifdef SET_EMACS_PRIORITY
780 extern int emacs_priority
;
782 if (emacs_priority
< 0)
783 nice (-emacs_priority
);
787 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
790 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
792 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
794 #else /* not MSDOS */
796 /* Waits for process completion */
797 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
799 write (1, "Can't execute subshell", 22);
802 #else /* not WINDOWSNT */
804 write (1, "Can't execute subshell", 22);
806 #endif /* not WINDOWSNT */
807 #endif /* not MSDOS */
810 /* Do this now if we did not do it before. */
811 #if !defined (MSDOS) || __DJGPP__ == 1
812 save_signal_handlers (saved_handlers
);
813 synch_process_alive
= 1;
817 wait_for_termination (pid
);
819 restore_signal_handlers (saved_handlers
);
820 synch_process_alive
= 0;
824 save_signal_handlers (saved_handlers
)
825 struct save_signal
*saved_handlers
;
827 while (saved_handlers
->code
)
829 saved_handlers
->handler
830 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
835 restore_signal_handlers (saved_handlers
)
836 struct save_signal
*saved_handlers
;
838 while (saved_handlers
->code
)
840 signal (saved_handlers
->code
, saved_handlers
->handler
);
853 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
854 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
856 interrupts_deferred
= 0;
864 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
868 if (read_socket_hook
)
872 sigunblock (sigmask (SIGWINCH
));
874 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
876 interrupts_deferred
= 0;
881 if (read_socket_hook
)
885 sigblock (sigmask (SIGWINCH
));
887 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
888 interrupts_deferred
= 1;
891 #else /* no FASYNC */
892 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
898 if (read_socket_hook
)
901 ioctl (input_fd
, FIOASYNC
, &on
);
902 interrupts_deferred
= 0;
909 if (read_socket_hook
)
912 ioctl (input_fd
, FIOASYNC
, &off
);
913 interrupts_deferred
= 1;
916 #else /* not FASYNC, not STRIDE */
927 if (read_socket_hook
)
931 sigaddset(&st
, SIGIO
);
932 ioctl (input_fd
, FIOASYNC
, &on
);
933 interrupts_deferred
= 0;
934 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
941 if (read_socket_hook
)
944 ioctl (input_fd
, FIOASYNC
, &off
);
945 interrupts_deferred
= 1;
952 if (read_socket_hook
)
955 croak ("request_sigio");
960 if (read_socket_hook
)
963 croak ("unrequest_sigio");
971 /* Saving and restoring the process group of Emacs's terminal. */
975 /* The process group of which Emacs was a member when it initially
978 If Emacs was in its own process group (i.e. inherited_pgroup ==
979 getpid ()), then we know we're running under a shell with job
980 control (Emacs would never be run as part of a pipeline).
983 If Emacs was not in its own process group, then we know we're
984 running under a shell (or a caller) that doesn't know how to
985 separate itself from Emacs (like sh). Emacs must be in its own
986 process group in order to receive SIGIO correctly. In this
987 situation, we put ourselves in our own pgroup, forcibly set the
988 tty's pgroup to our pgroup, and make sure to restore and reinstate
989 the tty's pgroup just like any other terminal setting. If
990 inherited_group was not the tty's pgroup, then we'll get a
991 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
992 it goes foreground in the future, which is what should happen. */
993 int inherited_pgroup
;
995 /* Split off the foreground process group to Emacs alone.
996 When we are in the foreground, but not started in our own process
997 group, redirect the TTY to point to our own process group. We need
998 to be in our own process group to receive SIGIO properly. */
999 narrow_foreground_group ()
1003 setpgrp (0, inherited_pgroup
);
1004 if (inherited_pgroup
!= me
)
1005 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1009 /* Set the tty to our original foreground group. */
1010 widen_foreground_group ()
1012 if (inherited_pgroup
!= getpid ())
1013 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1014 setpgrp (0, inherited_pgroup
);
1017 #endif /* BSD_PGRPS */
1019 /* Getting and setting emacs_tty structures. */
1021 /* Set *TC to the parameters associated with the terminal FD.
1022 Return zero if all's well, or -1 if we ran into an error we
1023 couldn't deal with. */
1025 emacs_get_tty (fd
, settings
)
1027 struct emacs_tty
*settings
;
1029 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1031 /* We have those nifty POSIX tcmumbleattr functions. */
1032 if (tcgetattr (fd
, &settings
->main
) < 0)
1037 /* The SYSV-style interface? */
1038 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1043 /* Vehemently Monstrous System? :-) */
1044 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1045 &settings
->main
.class, 12, 0, 0, 0, 0)
1051 /* I give up - I hope you have the BSD ioctls. */
1052 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1054 #endif /* not DOS_NT */
1059 /* Suivant - Do we have to get struct ltchars data? */
1061 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1065 /* How about a struct tchars and a wordful of lmode bits? */
1067 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1068 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1072 /* We have survived the tempest. */
1077 /* Set the parameters of the tty on FD according to the contents of
1078 *SETTINGS. If FLUSHP is non-zero, we discard input.
1079 Return 0 if all went well, and -1 if anything failed. */
1082 emacs_set_tty (fd
, settings
, flushp
)
1084 struct emacs_tty
*settings
;
1087 /* Set the primary parameters - baud rate, character size, etcetera. */
1090 /* We have those nifty POSIX tcmumbleattr functions.
1091 William J. Smith <wjs@wiis.wang.com> writes:
1092 "POSIX 1003.1 defines tcsetattr() to return success if it was
1093 able to perform any of the requested actions, even if some
1094 of the requested actions could not be performed.
1095 We must read settings back to ensure tty setup properly.
1096 AIX requires this to keep tty from hanging occasionally." */
1097 /* This make sure that we don't loop indefinitely in here. */
1098 for (i
= 0 ; i
< 10 ; i
++)
1099 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1110 /* Get the current settings, and see if they're what we asked for. */
1111 tcgetattr (fd
, &new);
1112 /* We cannot use memcmp on the whole structure here because under
1113 * aix386 the termios structure has some reserved field that may
1116 if ( new.c_iflag
== settings
->main
.c_iflag
1117 && new.c_oflag
== settings
->main
.c_oflag
1118 && new.c_cflag
== settings
->main
.c_cflag
1119 && new.c_lflag
== settings
->main
.c_lflag
1120 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1128 /* The SYSV-style interface? */
1129 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1134 /* Vehemently Monstrous System? :-) */
1135 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1136 &settings
->main
.class, 12, 0, 0, 0, 0)
1142 /* I give up - I hope you have the BSD ioctls. */
1143 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1145 #endif /* not DOS_NT */
1151 /* Suivant - Do we have to get struct ltchars data? */
1153 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1157 /* How about a struct tchars and a wordful of lmode bits? */
1159 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1160 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1164 /* We have survived the tempest. */
1169 /* The initial tty mode bits */
1170 struct emacs_tty old_tty
;
1172 /* 1 if we have been through init_sys_modes. */
1175 /* 1 if outer tty status has been recorded. */
1179 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1184 #ifndef F_SETOWN_BUG
1186 int old_fcntl_owner
;
1187 #endif /* F_SETOWN */
1188 #endif /* F_SETOWN_BUG */
1190 /* This may also be defined in stdio,
1191 but if so, this does no harm,
1192 and using the same name avoids wasting the other one's space. */
1194 #if defined (USG) || defined (DGUX)
1195 unsigned char _sobuf
[BUFSIZ
+8];
1197 char _sobuf
[BUFSIZ
];
1201 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1204 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1209 struct emacs_tty tty
;
1213 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1214 extern int (*interrupt_signal
) ();
1223 input_ef
= get_kbd_event_flag ();
1224 /* LIB$GET_EF (&input_ef); */
1225 SYS$
CLREF (input_ef
);
1226 waiting_for_ast
= 0;
1228 timer_ef
= get_timer_event_flag ();
1229 /* LIB$GET_EF (&timer_ef); */
1230 SYS$
CLREF (timer_ef
);
1234 LIB$
GET_EF (&process_ef
);
1235 SYS$
CLREF (process_ef
);
1237 if (input_ef
/ 32 != process_ef
/ 32)
1238 croak ("Input and process event flags in different clusters.");
1240 if (input_ef
/ 32 != timer_ef
/ 32)
1241 croak ("Input and timer event flags in different clusters.");
1243 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1244 ((unsigned) 1 << (process_ef
% 32));
1246 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1247 ((unsigned) 1 << (timer_ef
% 32));
1249 sys_access_reinit ();
1251 #endif /* not VMS */
1254 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1255 narrow_foreground_group ();
1258 #ifdef HAVE_WINDOW_SYSTEM
1259 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1260 needs the initialization code below. */
1261 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1264 EMACS_GET_TTY (input_fd
, &old_tty
);
1270 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1272 /* This allows meta to be sent on 8th bit. */
1273 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1275 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1276 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1277 #ifdef INLCR /* I'm just being cautious,
1278 since I can't check how widespread INLCR is--rms. */
1279 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1282 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1284 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1285 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1287 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1289 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1292 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1294 tty
.main
.c_iflag
&= ~IXANY
;
1298 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1299 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1301 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1305 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1306 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1309 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1310 /* Set up C-g for both SIGQUIT and SIGINT.
1311 We don't know which we will get, but we handle both alike
1312 so which one it really gives us does not matter. */
1313 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1314 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1315 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1317 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1320 #if defined (mips) || defined (HAVE_TCATTR)
1322 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1325 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1326 #endif /* V_DSUSP */
1327 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1328 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1331 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1334 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1335 #endif /* VREPRINT */
1337 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1338 #endif /* VWERASE */
1340 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1341 #endif /* VDISCARD */
1343 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1346 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1348 #endif /* mips or HAVE_TCATTR */
1349 #ifdef SET_LINE_DISCIPLINE
1350 /* Need to explicitly request TERMIODISC line discipline or
1351 Ultrix's termios does not work correctly. */
1352 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1356 /* AIX enhanced edit loses NULs, so disable it. */
1357 tty
.main
.c_line
= 0;
1358 tty
.main
.c_iflag
&= ~ASCEDIT
;
1360 tty
.main
.c_cc
[VSTRT
] = 255;
1361 tty
.main
.c_cc
[VSTOP
] = 255;
1362 tty
.main
.c_cc
[VSUSP
] = 255;
1363 tty
.main
.c_cc
[VDSUSP
] = 255;
1364 #endif /* IBMR2AIX */
1365 /* Also, PTY overloads NUL and BREAK.
1366 don't ignore break, but don't signal either, so it looks like NUL.
1367 This really serves a purpose only if running in an XTERM window
1368 or via TELNET or the like, but does no harm elsewhere. */
1369 tty
.main
.c_iflag
&= ~IGNBRK
;
1370 tty
.main
.c_iflag
&= ~BRKINT
;
1372 #else /* if not HAVE_TERMIO */
1374 tty
.main
.tt_char
|= TT$M_NOECHO
;
1376 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1378 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1380 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1381 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1382 #else /* not VMS (BSD, that is) */
1384 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1386 tty
.main
.sg_flags
|= ANYP
;
1387 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1388 #endif /* not DOS_NT */
1389 #endif /* not VMS (BSD, that is) */
1390 #endif /* not HAVE_TERMIO */
1392 /* If going to use CBREAK mode, we must request C-g to interrupt
1393 and turn off start and stop chars, etc. If not going to use
1394 CBREAK mode, do this anyway so as to turn off local flow
1395 control for user coming over network on 4.2; in this case,
1396 only t_stopc and t_startc really matter. */
1399 /* Note: if not using CBREAK mode, it makes no difference how we
1401 tty
.tchars
= new_tchars
;
1402 tty
.tchars
.t_intrc
= quit_char
;
1405 tty
.tchars
.t_startc
= '\021';
1406 tty
.tchars
.t_stopc
= '\023';
1409 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1411 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1412 anything, and leaving it in breaks the meta key. Go figure. */
1413 tty
.lmode
&= ~LLITOUT
;
1420 #endif /* HAVE_TCHARS */
1421 #endif /* not HAVE_TERMIO */
1424 tty
.ltchars
= new_ltchars
;
1425 #endif /* HAVE_LTCHARS */
1426 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1428 internal_terminal_init ();
1432 EMACS_SET_TTY (input_fd
, &tty
, 0);
1434 /* This code added to insure that, if flow-control is not to be used,
1435 we have an unlocked terminal at the start. */
1438 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1442 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1446 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1448 if (!flow_control
) tcflow (input_fd
, TCOON
);
1456 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1457 to be only LF. This is the way that is done. */
1460 if (ioctl (1, HFTGETID
, &tty
) != -1)
1461 write (1, "\033[20l", 5);
1467 /* Appears to do nothing when in PASTHRU mode.
1468 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1469 interrupt_signal, oob_chars, 0, 0, 0, 0);
1471 queue_kbd_input (0);
1476 #ifndef F_SETOWN_BUG
1477 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1479 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1481 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1482 fcntl (input_fd
, F_SETOWN
, getpid ());
1483 init_sigio (input_fd
);
1485 #endif /* F_GETOWN */
1486 #endif /* F_SETOWN_BUG */
1487 #endif /* F_SETFL */
1490 if (interrupt_input
)
1491 init_sigio (input_fd
);
1494 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1498 /* This symbol is defined on recent USG systems.
1499 Someone says without this call USG won't really buffer the file
1500 even with a call to setbuf. */
1501 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1503 setbuf (stdout
, _sobuf
);
1505 #ifdef HAVE_WINDOW_SYSTEM
1506 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1507 needs the initialization code below. */
1508 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1510 set_terminal_modes ();
1512 if (term_initted
&& no_redraw_on_reenter
)
1514 if (display_completed
)
1515 direct_output_forward_char (0);
1521 if (FRAMEP (Vterminal_frame
))
1522 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1529 /* Return nonzero if safe to use tabs in output.
1530 At the time this is called, init_sys_modes has not been done yet. */
1534 struct emacs_tty tty
;
1536 EMACS_GET_TTY (input_fd
, &tty
);
1537 return EMACS_TTY_TABS_OK (&tty
);
1540 /* Get terminal size from system.
1541 Store number of lines into *HEIGHTP and width into *WIDTHP.
1542 We store 0 if there's no valid information. */
1544 get_frame_size (widthp
, heightp
)
1545 int *widthp
, *heightp
;
1551 struct winsize size
;
1553 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1554 *widthp
= *heightp
= 0;
1557 *widthp
= size
.ws_col
;
1558 *heightp
= size
.ws_row
;
1564 /* SunOS - style. */
1565 struct ttysize size
;
1567 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1568 *widthp
= *heightp
= 0;
1571 *widthp
= size
.ts_cols
;
1572 *heightp
= size
.ts_lines
;
1578 struct sensemode tty
;
1580 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1581 &tty
.class, 12, 0, 0, 0, 0);
1582 *widthp
= tty
.scr_wid
;
1583 *heightp
= tty
.scr_len
;
1587 *widthp
= ScreenCols ();
1588 *heightp
= ScreenRows ();
1589 #else /* system doesn't know size */
1594 #endif /* not VMS */
1595 #endif /* not SunOS-style */
1596 #endif /* not BSD-style */
1599 /* Set the logical window size associated with descriptor FD
1600 to HEIGHT and WIDTH. This is used mainly with ptys. */
1603 set_window_size (fd
, height
, width
)
1604 int fd
, height
, width
;
1609 struct winsize size
;
1610 size
.ws_row
= height
;
1611 size
.ws_col
= width
;
1613 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1614 return 0; /* error */
1621 /* SunOS - style. */
1622 struct ttysize size
;
1623 size
.ts_lines
= height
;
1624 size
.ts_cols
= width
;
1626 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1632 #endif /* not SunOS-style */
1633 #endif /* not BSD-style */
1637 /* Prepare the terminal for exiting Emacs; move the cursor to the
1638 bottom of the frame, turn off interrupt-driven I/O, etc. */
1648 #ifdef HAVE_WINDOW_SYSTEM
1649 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1650 needs the clean-up code below. */
1651 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1654 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1655 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1656 /* clear_end_of_line may move the cursor */
1657 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1658 #if defined (IBMR2AIX) && defined (AIXHFT)
1660 /* HFT devices normally use ^J as a LF/CR. We forced it to
1661 do the LF only. Now, we need to reset it. */
1664 if (ioctl (1, HFTGETID
, &tty
) != -1)
1665 write (1, "\033[20h", 5);
1669 reset_terminal_modes ();
1673 /* Avoid possible loss of output when changing terminal modes. */
1674 fsync (fileno (stdout
));
1679 #ifndef F_SETOWN_BUG
1680 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1681 if (interrupt_input
)
1684 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1686 #endif /* F_SETOWN */
1687 #endif /* F_SETOWN_BUG */
1689 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1691 #endif /* F_SETFL */
1693 if (interrupt_input
)
1698 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1701 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1705 #ifdef SET_LINE_DISCIPLINE
1706 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1707 A different old line discipline is therefore not restored, yet.
1708 Restore the old line discipline by hand. */
1709 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1717 widen_foreground_group ();
1723 /* Set up the proper status flags for use of a pty. */
1728 /* I'm told that TOICREMOTE does not mean control chars
1729 "can't be sent" but rather that they don't have
1730 input-editing or signaling effects.
1731 That should be good, because we have other ways
1732 to do those things in Emacs.
1733 However, telnet mode seems not to work on 4.2.
1734 So TIOCREMOTE is turned off now. */
1736 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1737 will hang. In particular, the "timeout" feature (which
1738 causes a read to return if there is no data available)
1739 does this. Also it is known that telnet mode will hang
1740 in such a way that Emacs must be stopped (perhaps this
1741 is the same problem).
1743 If TIOCREMOTE is turned off, then there is a bug in
1744 hp-ux which sometimes loses data. Apparently the
1745 code which blocks the master process when the internal
1746 buffer fills up does not work. Other than this,
1747 though, everything else seems to work fine.
1749 Since the latter lossage is more benign, we may as well
1750 lose that way. -- cph */
1755 ioctl (fd
, FIONBIO
, &on
);
1760 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1761 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1762 /* cause EMACS not to die when it should, i.e., when its own controlling */
1763 /* tty goes away. I've complained to the AIX developers, and they may */
1764 /* change this behavior, but I'm not going to hold my breath. */
1765 signal (SIGHUP
, SIG_IGN
);
1768 #endif /* HAVE_PTYS */
1772 /* Assigning an input channel is done at the start of Emacs execution.
1773 This is called each time Emacs is resumed, also, but does nothing
1774 because input_chain is no longer zero. */
1782 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1788 /* Deassigning the input channel is done before exiting. */
1792 return SYS$
DASSGN (input_fd
);
1797 /* Request reading one character into the keyboard buffer.
1798 This is done as soon as the buffer becomes empty. */
1803 extern kbd_input_ast ();
1805 waiting_for_ast
= 0;
1807 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1808 &input_iosb
, kbd_input_ast
, 1,
1809 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1814 /* Ast routine that is called when keyboard input comes in
1815 in accord with the SYS$QIO above. */
1819 register int c
= -1;
1820 int old_errno
= errno
;
1821 extern EMACS_TIME
*input_available_clear_time
;
1823 if (waiting_for_ast
)
1824 SYS$
SETEF (input_ef
);
1825 waiting_for_ast
= 0;
1828 if (input_count
== 25)
1830 printf ("Ast # %d,", input_count
);
1831 printf (" iosb = %x, %x, %x, %x",
1832 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1835 if (input_iosb
.offset
)
1839 printf (", char = 0%o", c
);
1851 struct input_event e
;
1852 e
.kind
= ascii_keystroke
;
1853 XSETINT (e
.code
, c
);
1854 XSETFRAME (e
.frame_or_window
, selected_frame
);
1855 kbd_buffer_store_event (&e
);
1857 if (input_available_clear_time
)
1858 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1862 /* Wait until there is something in kbd_buffer. */
1864 wait_for_kbd_input ()
1866 extern int have_process_input
, process_exited
;
1868 /* If already something, avoid doing system calls. */
1869 if (detect_input_pending ())
1873 /* Clear a flag, and tell ast routine above to set it. */
1874 SYS$
CLREF (input_ef
);
1875 waiting_for_ast
= 1;
1876 /* Check for timing error: ast happened while we were doing that. */
1877 if (!detect_input_pending ())
1879 /* No timing error: wait for flag to be set. */
1880 set_waiting_for_input (0);
1881 SYS$
WFLOR (input_ef
, input_eflist
);
1882 clear_waiting_for_input (0);
1883 if (!detect_input_pending ())
1884 /* Check for subprocess input availability */
1886 int dsp
= have_process_input
|| process_exited
;
1888 SYS$
CLREF (process_ef
);
1889 if (have_process_input
)
1890 process_command_input ();
1895 update_mode_lines
++;
1896 prepare_menu_bars ();
1897 redisplay_preserve_echo_area ();
1901 waiting_for_ast
= 0;
1904 /* Get rid of any pending QIO, when we are about to suspend
1905 or when we want to throw away pending input.
1906 We wait for a positive sign that the AST routine has run
1907 and therefore there is no I/O request queued when we return.
1908 SYS$SETAST is used to avoid a timing error. */
1913 printf ("At end_kbd_input.\n");
1917 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1919 SYS$
CANCEL (input_fd
);
1924 /* Clear a flag, and tell ast routine above to set it. */
1925 SYS$
CLREF (input_ef
);
1926 waiting_for_ast
= 1;
1928 SYS$
CANCEL (input_fd
);
1930 SYS$
WAITFR (input_ef
);
1931 waiting_for_ast
= 0;
1934 /* Wait for either input available or time interval expiry. */
1936 input_wait_timeout (timeval
)
1937 int timeval
; /* Time to wait, in seconds */
1940 static int zero
= 0;
1941 static int large
= -10000000;
1943 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1945 /* If already something, avoid doing system calls. */
1946 if (detect_input_pending ())
1950 /* Clear a flag, and tell ast routine above to set it. */
1951 SYS$
CLREF (input_ef
);
1952 waiting_for_ast
= 1;
1953 /* Check for timing error: ast happened while we were doing that. */
1954 if (!detect_input_pending ())
1956 /* No timing error: wait for flag to be set. */
1958 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1959 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1961 waiting_for_ast
= 0;
1964 /* The standard `sleep' routine works some other way
1965 and it stops working if you have ever quit out of it.
1966 This one continues to work. */
1972 static int zero
= 0;
1973 static int large
= -10000000;
1975 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1978 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1979 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1995 croak ("request sigio");
2000 croak ("unrequest sigio");
2005 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2010 #ifndef SYSTEM_MALLOC
2017 /* Some systems that cannot dump also cannot implement these. */
2020 * Return the address of the start of the text segment prior to
2021 * doing an unexec. After unexec the return value is undefined.
2022 * See crt0.c for further explanation and _start.
2026 #ifndef HAVE_TEXT_START
2031 return ((char *) TEXT_START
);
2035 return ((char *) csrt
);
2036 #else /* not GOULD */
2037 extern int _start ();
2038 return ((char *) _start
);
2040 #endif /* TEXT_START */
2042 #endif /* not HAVE_TEXT_START */
2045 * Return the address of the start of the data segment prior to
2046 * doing an unexec. After unexec the return value is undefined.
2047 * See crt0.c for further information and definition of data_start.
2049 * Apparently, on BSD systems this is etext at startup. On
2050 * USG systems (swapping) this is highly mmu dependent and
2051 * is also dependent on whether or not the program is running
2052 * with shared text. Generally there is a (possibly large)
2053 * gap between end of text and start of data with shared text.
2055 * On Uniplus+ systems with shared text, data starts at a
2056 * fixed address. Each port (from a given oem) is generally
2057 * different, and the specific value of the start of data can
2058 * be obtained via the UniPlus+ specific "uvar" system call,
2059 * however the method outlined in crt0.c seems to be more portable.
2061 * Probably what will have to happen when a USG unexec is available,
2062 * at least on UniPlus, is temacs will have to be made unshared so
2063 * that text and data are contiguous. Then once loadup is complete,
2064 * unexec will produce a shared executable where the data can be
2065 * at the normal shared text boundary and the startofdata variable
2066 * will be patched by unexec to the correct value.
2074 return ((char *) DATA_START
);
2076 #ifdef ORDINARY_LINK
2078 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2079 * data_start isn't defined. We take the address of environ, which
2080 * is known to live at or near the start of the system crt0.c, and
2081 * we don't sweat the handful of bytes that might lose.
2083 extern char **environ
;
2085 return((char *) &environ
);
2087 extern int data_start
;
2088 return ((char *) &data_start
);
2089 #endif /* ORDINARY_LINK */
2090 #endif /* DATA_START */
2092 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2095 /* Some systems that cannot dump also cannot implement these. */
2098 * Return the address of the end of the text segment prior to
2099 * doing an unexec. After unexec the return value is undefined.
2106 return ((char *) TEXT_END
);
2109 return ((char *) &etext
);
2114 * Return the address of the end of the data segment prior to
2115 * doing an unexec. After unexec the return value is undefined.
2122 return ((char *) DATA_END
);
2125 return ((char *) &edata
);
2129 #endif /* not CANNOT_DUMP */
2131 /* init_system_name sets up the string for the Lisp function
2132 system-name to return. */
2138 extern Lisp_Object Vsystem_name
;
2143 #include <sys/socket.h>
2145 #endif /* HAVE_SOCKETS */
2146 #endif /* not VMS */
2147 #endif /* not BSD4_1 */
2153 Vsystem_name
= build_string (sysname
);
2157 if ((sp
= egetenv ("SYS$NODE")) == 0)
2158 Vsystem_name
= build_string ("vax-vms");
2159 else if ((end
= index (sp
, ':')) == 0)
2160 Vsystem_name
= build_string (sp
);
2162 Vsystem_name
= make_string (sp
, end
- sp
);
2164 #ifndef HAVE_GETHOSTNAME
2167 Vsystem_name
= build_string (uts
.nodename
);
2168 #else /* HAVE_GETHOSTNAME */
2169 unsigned int hostname_size
= 256;
2170 char *hostname
= (char *) alloca (hostname_size
);
2172 /* Try to get the host name; if the buffer is too short, try
2173 again. Apparently, the only indication gethostname gives of
2174 whether the buffer was large enough is the presence or absence
2175 of a '\0' in the string. Eech. */
2178 gethostname (hostname
, hostname_size
- 1);
2179 hostname
[hostname_size
- 1] = '\0';
2181 /* Was the buffer large enough for the '\0'? */
2182 if (strlen (hostname
) < hostname_size
- 1)
2185 hostname_size
<<= 1;
2186 hostname
= (char *) alloca (hostname_size
);
2189 /* Turn the hostname into the official, fully-qualified hostname.
2190 Don't do this if we're going to dump; this can confuse system
2191 libraries on some machines and make the dumped emacs core dump. */
2194 #endif /* not CANNOT_DUMP */
2198 for (count
= 0; count
< 10; count
++)
2203 hp
= gethostbyname (hostname
);
2205 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2208 Fsleep_for (make_number (1), Qnil
);
2212 char *fqdn
= (char *) hp
->h_name
;
2215 if (!index (fqdn
, '.'))
2217 /* We still don't have a fully qualified domain name.
2218 Try to find one in the list of alternate names */
2219 char **alias
= hp
->h_aliases
;
2220 while (*alias
&& !index (*alias
, '.'))
2227 /* Convert the host name to lower case. */
2228 /* Using ctype.h here would introduce a possible locale
2229 dependence that is probably wrong for hostnames. */
2233 if (*p
>= 'A' && *p
<= 'Z')
2240 #endif /* HAVE_SOCKETS */
2241 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) || HAVE_GETDOMAINNAME
2242 if (! index (hostname
, '.'))
2244 /* The hostname is not fully qualified. Append the domain name. */
2246 int hostlen
= strlen (hostname
);
2247 int domain_size
= 256;
2251 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
);
2252 char *domain
= fqdn
+ hostlen
+ 1;
2253 #if HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)
2254 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2255 if (sys_domain_size
<= 0)
2257 if (domain_size
< sys_domain_size
)
2259 domain_size
= sys_domain_size
;
2262 #else /* HAVE_GETDOMAINNAME */
2263 if (getdomainname (domain
, domain_size
- 1) != 0 || ! *domain
)
2265 domain
[domain_size
- 1] = '\0';
2266 if (strlen (domain
) == domain_size
- 1)
2271 #endif /* HAVE_GETDOMAINNAME */
2272 strcpy (fqdn
, hostname
);
2273 fqdn
[hostlen
] = '.';
2278 #endif /*! ((HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) || HAVE_GETDOMAINNAME)*/
2279 Vsystem_name
= build_string (hostname
);
2280 #endif /* HAVE_GETHOSTNAME */
2285 for (p
= XSTRING (Vsystem_name
)->data
; *p
; p
++)
2286 if (*p
== ' ' || *p
== '\t')
2293 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2295 #include "sysselect.h"
2298 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2299 /* Cause explanatory error message at compile time,
2300 since the select emulation is not good enough for X. */
2301 int *x
= &x_windows_lose_if_no_select_system_call
;
2304 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2305 * Only checks read descriptors.
2307 /* How long to wait between checking fds in select */
2308 #define SELECT_PAUSE 1
2311 /* For longjmp'ing back to read_input_waiting. */
2313 jmp_buf read_alarm_throw
;
2315 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2316 The read_socket_hook function sets this to 1 while it is waiting. */
2318 int read_alarm_should_throw
;
2326 #else /* not BSD4_1 */
2327 signal (SIGALRM
, SIG_IGN
);
2328 #endif /* not BSD4_1 */
2329 if (read_alarm_should_throw
)
2330 longjmp (read_alarm_throw
, 1);
2334 /* Only rfds are checked. */
2336 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2338 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2339 EMACS_TIME
*timeout
;
2341 int ravail
= 0, old_alarm
;
2345 extern int proc_buffered_char
[];
2346 #ifndef subprocesses
2347 int process_tick
= 0, update_tick
= 0;
2349 extern int process_tick
, update_tick
;
2351 SIGTYPE (*old_trap
) ();
2354 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2355 /* If we're using X, then the native select will work; we only need the
2356 emulation for non-X usage. */
2357 if (!NILP (Vwindow_system
))
2358 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2360 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2361 local_timeout
= &timeoutval
;
2373 /* If we are looking only for the terminal, with no timeout,
2374 just read it and wait -- that's more efficient. */
2375 if (*local_timeout
== 100000 && process_tick
== update_tick
2376 && FD_ISSET (0, &orfds
))
2379 for (fd
= 1; fd
< nfds
; ++fd
)
2380 if (FD_ISSET (fd
, &orfds
))
2382 if (! detect_input_pending ())
2383 read_input_waiting ();
2389 /* Once a second, till the timer expires, check all the flagged read
2390 * descriptors to see if any input is available. If there is some then
2391 * set the corresponding bit in the return copy of rfds.
2395 register int to_check
, fd
;
2399 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2401 if (FD_ISSET (fd
, &orfds
))
2403 int avail
= 0, status
= 0;
2406 avail
= detect_input_pending (); /* Special keyboard handler */
2410 status
= ioctl (fd
, FIONREAD
, &avail
);
2411 #else /* no FIONREAD */
2412 /* Hoping it will return -1 if nothing available
2413 or 0 if all 0 chars requested are read. */
2414 if (proc_buffered_char
[fd
] >= 0)
2418 avail
= read (fd
, &buf
, 1);
2420 proc_buffered_char
[fd
] = buf
;
2422 #endif /* no FIONREAD */
2424 if (status
>= 0 && avail
> 0)
2432 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2434 old_alarm
= alarm (0);
2435 old_trap
= signal (SIGALRM
, select_alarm
);
2437 alarm (SELECT_PAUSE
);
2438 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2439 while (select_alarmed
== 0 && *local_timeout
!= 0
2440 && process_tick
== update_tick
)
2442 /* If we are interested in terminal input,
2443 wait by reading the terminal.
2444 That makes instant wakeup for terminal input at least. */
2445 if (FD_ISSET (0, &orfds
))
2447 read_input_waiting ();
2448 if (detect_input_pending ())
2454 (*local_timeout
) -= SELECT_PAUSE
;
2455 /* Reset the old alarm if there was one */
2457 signal (SIGALRM
, old_trap
);
2460 /* Reset or forge an interrupt for the original handler. */
2461 old_alarm
-= SELECT_PAUSE
;
2463 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2467 if (*local_timeout
== 0) /* Stop on timer being cleared */
2472 #endif /* not WINDOWSNT */
2474 /* Read keyboard input into the standard buffer,
2475 waiting for at least one character. */
2477 /* Make all keyboard buffers much bigger when using a window system. */
2478 #ifdef HAVE_WINDOW_SYSTEM
2479 #define BUFFER_SIZE_FACTOR 16
2481 #define BUFFER_SIZE_FACTOR 1
2484 read_input_waiting ()
2486 struct input_event e
;
2488 extern int quit_char
;
2490 if (read_socket_hook
)
2492 struct input_event buf
[256];
2494 read_alarm_should_throw
= 0;
2495 if (! setjmp (read_alarm_throw
))
2496 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2500 /* Scan the chars for C-g and store them in kbd_buffer. */
2501 for (i
= 0; i
< nread
; i
++)
2503 kbd_buffer_store_event (&buf
[i
]);
2504 /* Don't look at input that follows a C-g too closely.
2505 This reduces lossage due to autorepeat on C-g. */
2506 if (buf
[i
].kind
== ascii_keystroke
2507 && buf
[i
].code
== quit_char
)
2514 nread
= read (fileno (stdin
), buf
, 1);
2516 /* Scan the chars for C-g and store them in kbd_buffer. */
2517 e
.kind
= ascii_keystroke
;
2518 XSETFRAME (e
.frame_or_window
, selected_frame
);
2520 for (i
= 0; i
< nread
; i
++)
2522 /* Convert chars > 0177 to meta events if desired.
2523 We do this under the same conditions that read_avail_input does. */
2524 if (read_socket_hook
== 0)
2526 /* If the user says she has a meta key, then believe her. */
2527 if (meta_key
== 1 && (buf
[i
] & 0x80))
2528 e
.modifiers
= meta_modifier
;
2533 XSETINT (e
.code
, buf
[i
]);
2534 kbd_buffer_store_event (&e
);
2535 /* Don't look at input that follows a C-g too closely.
2536 This reduces lossage due to autorepeat on C-g. */
2537 if (buf
[i
] == quit_char
)
2543 #endif /* not HAVE_SELECT */
2544 #endif /* not VMS */
2545 #endif /* not MSDOS */
2549 * Partially emulate 4.2 open call.
2550 * open is defined as this in 4.1.
2552 * - added by Michael Bloom @ Citicorp/TTI
2557 sys_open (path
, oflag
, mode
)
2561 if (oflag
& O_CREAT
)
2562 return creat (path
, mode
);
2564 return open (path
, oflag
);
2572 lmode
= LINTRUP
| lmode
;
2573 ioctl (fd
, TIOCLSET
, &lmode
);
2580 lmode
= ~LINTRUP
& lmode
;
2581 ioctl (0, TIOCLSET
, &lmode
);
2588 interrupts_deferred
= 0;
2595 interrupts_deferred
= 1;
2598 /* still inside #ifdef BSD4_1 */
2601 int sigheld
; /* Mask of held signals */
2606 sigheld
|= sigbit (signum
);
2613 sigheld
|= sigbit (signum
);
2619 sigheld
&= ~sigbit (signum
);
2623 sigfree () /* Free all held signals */
2626 for (i
= 0; i
< NSIG
; i
++)
2627 if (sigheld
& sigbit (i
))
2634 return 1 << (i
- 1);
2636 #endif /* subprocesses */
2639 /* POSIX signals support - DJB */
2640 /* Anyone with POSIX signals should have ANSI C declarations */
2642 #ifdef POSIX_SIGNALS
2644 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2645 static struct sigaction new_action
, old_action
;
2649 sigemptyset (&empty_mask
);
2650 sigfillset (&full_mask
);
2654 sys_signal (int signal_number
, signal_handler_t action
)
2657 /* This gets us restartable system calls for efficiency.
2658 The "else" code will works as well. */
2659 return (berk_signal (signal_number
, action
));
2661 sigemptyset (&new_action
.sa_mask
);
2662 new_action
.sa_handler
= action
;
2664 /* Emacs mostly works better with restartable system services. If this
2665 * flag exists, we probably want to turn it on here.
2667 new_action
.sa_flags
= SA_RESTART
;
2669 new_action
.sa_flags
= 0;
2671 sigaction (signal_number
, &new_action
, &old_action
);
2672 return (old_action
.sa_handler
);
2677 /* If we're compiling with GCC, we don't need this function, since it
2678 can be written as a macro. */
2680 sys_sigmask (int sig
)
2683 sigemptyset (&mask
);
2684 sigaddset (&mask
, sig
);
2690 sys_sigpause (sigset_t new_mask
)
2692 /* pause emulating berk sigpause... */
2693 sigsuspend (&new_mask
);
2697 /* I'd like to have these guys return pointers to the mask storage in here,
2698 but there'd be trouble if the code was saving multiple masks. I'll be
2699 safe and pass the structure. It normally won't be more than 2 bytes
2703 sys_sigblock (sigset_t new_mask
)
2706 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2711 sys_sigunblock (sigset_t new_mask
)
2714 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2719 sys_sigsetmask (sigset_t new_mask
)
2722 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2726 #endif /* POSIX_SIGNALS */
2734 /* Figure out how many bits the system's random number generator uses.
2735 `random' and `lrand48' are assumed to return 31 usable bits.
2736 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2737 so we'll shift it and treat it like the 15-bit USG `rand'. */
2741 # define RAND_BITS 31
2742 # else /* !HAVE_RANDOM */
2743 # ifdef HAVE_LRAND48
2744 # define RAND_BITS 31
2745 # define random lrand48
2746 # else /* !HAVE_LRAND48 */
2747 # define RAND_BITS 15
2748 # if RAND_MAX == 32767
2749 # define random rand
2750 # else /* RAND_MAX != 32767 */
2751 # if RAND_MAX == 2147483647
2752 # define random() (rand () >> 16)
2753 # else /* RAND_MAX != 2147483647 */
2755 # define random rand
2757 # define random() (rand () >> 16)
2759 # endif /* RAND_MAX != 2147483647 */
2760 # endif /* RAND_MAX != 32767 */
2761 # endif /* !HAVE_LRAND48 */
2762 # endif /* !HAVE_RANDOM */
2763 #endif /* !RAND_BITS */
2770 srandom ((unsigned int)arg
);
2772 # ifdef HAVE_LRAND48
2775 srand ((unsigned int)arg
);
2781 * Build a full Emacs-sized word out of whatever we've got.
2782 * This suffices even for a 64-bit architecture with a 15-bit rand.
2787 long val
= random ();
2788 #if VALBITS > RAND_BITS
2789 val
= (val
<< RAND_BITS
) ^ random ();
2790 #if VALBITS > 2*RAND_BITS
2791 val
= (val
<< RAND_BITS
) ^ random ();
2792 #if VALBITS > 3*RAND_BITS
2793 val
= (val
<< RAND_BITS
) ^ random ();
2794 #if VALBITS > 4*RAND_BITS
2795 val
= (val
<< RAND_BITS
) ^ random ();
2796 #endif /* need at least 5 */
2797 #endif /* need at least 4 */
2798 #endif /* need at least 3 */
2799 #endif /* need at least 2 */
2800 return val
& ((1L << VALBITS
) - 1);
2803 #ifdef WRONG_NAME_INSQUE
2816 /* If any place else asks for the TERM variable,
2817 allow it to be overridden with the EMACS_TERM variable
2818 before attempting to translate the logical name TERM. As a last
2819 resort, ask for VAX C's special idea of the TERM variable. */
2826 static char buf
[256];
2827 static struct dsc$descriptor_s equiv
2828 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2829 static struct dsc$descriptor_s d_name
2830 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2833 if (!strcmp (name
, "TERM"))
2835 val
= (char *) getenv ("EMACS_TERM");
2840 d_name
.dsc$w_length
= strlen (name
);
2841 d_name
.dsc$a_pointer
= name
;
2842 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2844 char *str
= (char *) xmalloc (eqlen
+ 1);
2845 bcopy (buf
, str
, eqlen
);
2847 /* This is a storage leak, but a pain to fix. With luck,
2848 no one will ever notice. */
2851 return (char *) getenv (name
);
2856 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2857 to force a call on the debugger from within the image. */
2862 LIB$
SIGNAL (SS$_DEBUG
);
2868 #ifdef LINK_CRTL_SHARE
2869 #ifdef SHARABLE_LIB_BUG
2870 /* Variables declared noshare and initialized in sharable libraries
2871 cannot be shared. The VMS linker incorrectly forces you to use a private
2872 version which is uninitialized... If not for this "feature", we
2873 could use the C library definition of sys_nerr and sys_errlist. */
2875 char *sys_errlist
[] =
2879 "no such file or directory",
2881 "interrupted system call",
2883 "no such device or address",
2884 "argument list too long",
2885 "exec format error",
2888 "no more processes",
2889 "not enough memory",
2890 "permission denied",
2892 "block device required",
2893 "mount devices busy",
2895 "cross-device link",
2900 "file table overflow",
2901 "too many open files",
2905 "no space left on device",
2907 "read-only file system",
2913 "vax/vms specific error code nontranslatable error"
2915 #endif /* SHARABLE_LIB_BUG */
2916 #endif /* LINK_CRTL_SHARE */
2919 #ifndef HAVE_STRERROR
2925 extern char *sys_errlist
[];
2926 extern int sys_nerr
;
2928 if (errnum
>= 0 && errnum
< sys_nerr
)
2929 return sys_errlist
[errnum
];
2930 return (char *) "Unknown error";
2932 #endif /* not WINDOWSNT */
2933 #endif /* ! HAVE_STRERROR */
2935 #ifdef INTERRUPTIBLE_OPEN
2939 sys_open (path
, oflag
, mode
)
2943 register int rtnval
;
2945 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2946 && (errno
== EINTR
));
2950 #endif /* INTERRUPTIBLE_OPEN */
2952 #ifdef INTERRUPTIBLE_CLOSE
2958 register int rtnval
;
2960 while ((rtnval
= close (fd
)) == -1
2961 && (errno
== EINTR
))
2964 /* If close is interrupted SunOS 4.1 may or may not have closed the
2965 file descriptor. If it did the second close will fail with
2966 errno = EBADF. That means we have succeeded. */
2967 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2973 #endif /* INTERRUPTIBLE_CLOSE */
2975 #ifdef INTERRUPTIBLE_IO
2978 sys_read (fildes
, buf
, nbyte
)
2983 register int rtnval
;
2985 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2986 && (errno
== EINTR
));
2991 sys_write (fildes
, buf
, nbyte
)
2996 register int rtnval
, bytes_written
;
3002 rtnval
= write (fildes
, buf
, nbyte
);
3009 return (bytes_written
? bytes_written
: -1);
3014 bytes_written
+= rtnval
;
3016 return (bytes_written
);
3019 #endif /* INTERRUPTIBLE_IO */
3024 * Substitute fork for vfork on USG flavors.
3032 #endif /* not WINDOWSNT */
3033 #endif /* not HAVE_VFORK */
3037 * All of the following are for USG.
3039 * On USG systems the system calls are INTERRUPTIBLE by signals
3040 * that the user program has elected to catch. Thus the system call
3041 * must be retried in these cases. To handle this without massive
3042 * changes in the source code, we remap the standard system call names
3043 * to names for our own functions in sysdep.c that do the system call
3044 * with retries. Actually, for portability reasons, it is good
3045 * programming practice, as this example shows, to limit all actual
3046 * system calls to a single occurrence in the source. Sure, this
3047 * adds an extra level of function call overhead but it is almost
3048 * always negligible. Fred Fish, Unisoft Systems Inc.
3051 #ifndef HAVE_SYS_SIGLIST
3052 char *sys_siglist
[NSIG
+ 1] =
3055 /* AIX has changed the signals a bit */
3056 "bogus signal", /* 0 */
3057 "hangup", /* 1 SIGHUP */
3058 "interrupt", /* 2 SIGINT */
3059 "quit", /* 3 SIGQUIT */
3060 "illegal instruction", /* 4 SIGILL */
3061 "trace trap", /* 5 SIGTRAP */
3062 "IOT instruction", /* 6 SIGIOT */
3063 "crash likely", /* 7 SIGDANGER */
3064 "floating point exception", /* 8 SIGFPE */
3065 "kill", /* 9 SIGKILL */
3066 "bus error", /* 10 SIGBUS */
3067 "segmentation violation", /* 11 SIGSEGV */
3068 "bad argument to system call", /* 12 SIGSYS */
3069 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3070 "alarm clock", /* 14 SIGALRM */
3071 "software termination signum", /* 15 SIGTERM */
3072 "user defined signal 1", /* 16 SIGUSR1 */
3073 "user defined signal 2", /* 17 SIGUSR2 */
3074 "death of a child", /* 18 SIGCLD */
3075 "power-fail restart", /* 19 SIGPWR */
3076 "bogus signal", /* 20 */
3077 "bogus signal", /* 21 */
3078 "bogus signal", /* 22 */
3079 "bogus signal", /* 23 */
3080 "bogus signal", /* 24 */
3081 "LAN I/O interrupt", /* 25 SIGAIO */
3082 "PTY I/O interrupt", /* 26 SIGPTY */
3083 "I/O intervention required", /* 27 SIGIOINT */
3085 "HFT grant", /* 28 SIGGRANT */
3086 "HFT retract", /* 29 SIGRETRACT */
3087 "HFT sound done", /* 30 SIGSOUND */
3088 "HFT input ready", /* 31 SIGMSG */
3091 "bogus signal", /* 0 */
3092 "hangup", /* 1 SIGHUP */
3093 "interrupt", /* 2 SIGINT */
3094 "quit", /* 3 SIGQUIT */
3095 "illegal instruction", /* 4 SIGILL */
3096 "trace trap", /* 5 SIGTRAP */
3097 "IOT instruction", /* 6 SIGIOT */
3098 "EMT instruction", /* 7 SIGEMT */
3099 "floating point exception", /* 8 SIGFPE */
3100 "kill", /* 9 SIGKILL */
3101 "bus error", /* 10 SIGBUS */
3102 "segmentation violation", /* 11 SIGSEGV */
3103 "bad argument to system call", /* 12 SIGSYS */
3104 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3105 "alarm clock", /* 14 SIGALRM */
3106 "software termination signum", /* 15 SIGTERM */
3107 "user defined signal 1", /* 16 SIGUSR1 */
3108 "user defined signal 2", /* 17 SIGUSR2 */
3109 "death of a child", /* 18 SIGCLD */
3110 "power-fail restart", /* 19 SIGPWR */
3112 "window size change", /* 20 SIGWINCH */
3113 "urgent socket condition", /* 21 SIGURG */
3114 "pollable event occurred", /* 22 SIGPOLL */
3115 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
3116 "user stop requested from tty", /* 24 SIGTSTP */
3117 "stopped process has been continued", /* 25 SIGCONT */
3118 "background tty read attempted", /* 26 SIGTTIN */
3119 "background tty write attempted", /* 27 SIGTTOU */
3120 "virtual timer expired", /* 28 SIGVTALRM */
3121 "profiling timer expired", /* 29 SIGPROF */
3122 "exceeded cpu limit", /* 30 SIGXCPU */
3123 "exceeded file size limit", /* 31 SIGXFSZ */
3124 "process's lwps are blocked", /* 32 SIGWAITING */
3125 "special signal used by thread library", /* 33 SIGLWP */
3127 "Special Signal Used By CPR", /* 34 SIGFREEZE */
3130 "Special Signal Used By CPR", /* 35 SIGTHAW */
3133 #endif /* not AIX */
3136 #endif /* HAVE_SYS_SIGLIST */
3139 * Warning, this function may not duplicate 4.2 action properly
3140 * under error conditions.
3144 /* In 4.1, param.h fails to define this. */
3145 #define MAXPATHLEN 1024
3154 char *npath
, *spath
;
3155 extern char *getcwd ();
3157 BLOCK_INPUT
; /* getcwd uses malloc */
3158 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3161 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3162 up to first slash. Should be harmless on other systems. */
3163 while (*npath
&& *npath
!= '/')
3165 strcpy (pathname
, npath
);
3166 free (spath
); /* getcwd uses malloc */
3171 #endif /* HAVE_GETWD */
3174 * Emulate rename using unlink/link. Note that this is
3175 * only partially correct. Also, doesn't enforce restriction
3176 * that files be of same type (regular->regular, dir->dir, etc).
3185 if (access (from
, 0) == 0)
3188 if (link (from
, to
) == 0)
3189 if (unlink (from
) == 0)
3201 /* HPUX curses library references perror, but as far as we know
3202 it won't be called. Anyway this definition will do for now. */
3208 #endif /* not HAVE_PERROR */
3214 * Emulate BSD dup2. First close newd if it already exists.
3215 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3216 * until we are, then close the unsuccessful ones.
3223 register int fd
, ret
;
3228 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3230 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3237 ret
= dup2 (old
,new);
3243 #endif /* not HAVE_DUP2 */
3246 * Gettimeofday. Simulate as much as possible. Only accurate
3247 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3248 * Only needed when subprocesses are defined.
3253 #ifndef HAVE_GETTIMEOFDAY
3257 gettimeofday (tp
, tzp
)
3259 struct timezone
*tzp
;
3261 extern long time ();
3263 tp
->tv_sec
= time ((long *)0);
3266 tzp
->tz_minuteswest
= -1;
3272 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3275 * This function will go away as soon as all the stubs fixed. (fnf)
3281 printf ("%s not yet implemented\r\n", badfunc
);
3290 char *sys_siglist
[NSIG
+ 1] =
3292 "null signal", /* 0 SIGNULL */
3293 "hangup", /* 1 SIGHUP */
3294 "interrupt", /* 2 SIGINT */
3295 "quit", /* 3 SIGQUIT */
3296 "illegal instruction", /* 4 SIGILL */
3297 "trace trap", /* 5 SIGTRAP */
3298 "abort termination", /* 6 SIGABRT */
3299 "SIGEMT", /* 7 SIGEMT */
3300 "floating point exception", /* 8 SIGFPE */
3301 "kill", /* 9 SIGKILL */
3302 "bus error", /* 10 SIGBUS */
3303 "segmentation violation", /* 11 SIGSEGV */
3304 "bad argument to system call", /* 12 SIGSYS */
3305 "write on a pipe with no reader", /* 13 SIGPIPE */
3306 "alarm clock", /* 14 SIGALRM */
3307 "software termination signal", /* 15 SIGTERM */
3308 "user defined signal 1", /* 16 SIGUSR1 */
3309 "user defined signal 2", /* 17 SIGUSR2 */
3310 "child stopped or terminated", /* 18 SIGCLD */
3311 "power-fail restart", /* 19 SIGPWR */
3312 "window size changed", /* 20 SIGWINCH */
3313 "undefined", /* 21 */
3314 "pollable event occurred", /* 22 SIGPOLL */
3315 "sendable stop signal not from tty", /* 23 SIGSTOP */
3316 "stop signal from tty", /* 24 SIGSTP */
3317 "continue a stopped process", /* 25 SIGCONT */
3318 "attempted background tty read", /* 26 SIGTTIN */
3319 "attempted background tty write", /* 27 SIGTTOU */
3320 "undefined", /* 28 */
3321 "undefined", /* 29 */
3322 "undefined", /* 30 */
3323 "undefined", /* 31 */
3324 "undefined", /* 32 */
3325 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3326 "I/O is possible", /* 34 SIGIO */
3327 "exceeded cpu time limit", /* 35 SIGXCPU */
3328 "exceeded file size limit", /* 36 SIGXFSZ */
3329 "virtual time alarm", /* 37 SIGVTALRM */
3330 "profiling time alarm", /* 38 SIGPROF */
3331 "undefined", /* 39 */
3332 "file record locks revoked", /* 40 SIGLOST */
3333 "undefined", /* 41 */
3334 "undefined", /* 42 */
3335 "undefined", /* 43 */
3336 "undefined", /* 44 */
3337 "undefined", /* 45 */
3338 "undefined", /* 46 */
3339 "undefined", /* 47 */
3340 "undefined", /* 48 */
3341 "undefined", /* 49 */
3342 "undefined", /* 50 */
3343 "undefined", /* 51 */
3344 "undefined", /* 52 */
3345 "undefined", /* 53 */
3346 "undefined", /* 54 */
3347 "undefined", /* 55 */
3348 "undefined", /* 56 */
3349 "undefined", /* 57 */
3350 "undefined", /* 58 */
3351 "undefined", /* 59 */
3352 "undefined", /* 60 */
3353 "undefined", /* 61 */
3354 "undefined", /* 62 */
3355 "undefined", /* 63 */
3356 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3362 /* Directory routines for systems that don't have them. */
3364 #ifdef SYSV_SYSTEM_DIR
3368 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3372 register DIR *dirp
; /* stream from opendir */
3376 rtnval
= sys_close (dirp
->dd_fd
);
3378 /* Some systems (like Solaris) allocate the buffer and the DIR all
3379 in one block. Why in the world are we freeing this ourselves
3381 #if ! (defined (sun) && defined (USG5_4))
3382 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3384 xfree ((char *) dirp
);
3388 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3389 #endif /* SYSV_SYSTEM_DIR */
3391 #ifdef NONSYSTEM_DIR_LIBRARY
3395 char *filename
; /* name of directory */
3397 register DIR *dirp
; /* -> malloc'ed storage */
3398 register int fd
; /* file descriptor for read */
3399 struct stat sbuf
; /* result of fstat */
3401 fd
= sys_open (filename
, 0);
3406 if (fstat (fd
, &sbuf
) < 0
3407 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3408 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3412 return 0; /* bad luck today */
3417 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3424 register DIR *dirp
; /* stream from opendir */
3426 sys_close (dirp
->dd_fd
);
3427 xfree ((char *) dirp
);
3435 ino_t od_ino
; /* inode */
3436 char od_name
[DIRSIZ
]; /* filename */
3438 #endif /* not VMS */
3440 struct direct dir_static
; /* simulated directory contents */
3445 register DIR *dirp
; /* stream from opendir */
3448 register struct olddir
*dp
; /* -> directory data */
3450 register struct dir$_name
*dp
; /* -> directory data */
3451 register struct dir$_version
*dv
; /* -> version data */
3456 if (dirp
->dd_loc
>= dirp
->dd_size
)
3457 dirp
->dd_loc
= dirp
->dd_size
= 0;
3459 if (dirp
->dd_size
== 0 /* refill buffer */
3460 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3464 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3465 dirp
->dd_loc
+= sizeof (struct olddir
);
3467 if (dp
->od_ino
!= 0) /* not deleted entry */
3469 dir_static
.d_ino
= dp
->od_ino
;
3470 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3471 dir_static
.d_name
[DIRSIZ
] = '\0';
3472 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3473 dir_static
.d_reclen
= sizeof (struct direct
)
3475 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3476 return &dir_static
; /* -> simulated structure */
3479 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3480 if (dirp
->dd_loc
== 0)
3481 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3482 : dp
->dir$b_namecount
;
3483 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3484 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3485 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3486 dir_static
.d_reclen
= sizeof (struct direct
)
3488 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3489 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3490 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3491 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3498 /* readdirver is just like readdir except it returns all versions of a file
3499 as separate entries. */
3504 register DIR *dirp
; /* stream from opendir */
3506 register struct dir$_name
*dp
; /* -> directory data */
3507 register struct dir$_version
*dv
; /* -> version data */
3509 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3510 dirp
->dd_loc
= dirp
->dd_size
= 0;
3512 if (dirp
->dd_size
== 0 /* refill buffer */
3513 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3516 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3517 if (dirp
->dd_loc
== 0)
3518 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3519 : dp
->dir$b_namecount
;
3520 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3521 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3522 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3523 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3524 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3525 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3526 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3527 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3533 #endif /* NONSYSTEM_DIR_LIBRARY */
3537 set_file_times (filename
, atime
, mtime
)
3539 EMACS_TIME atime
, mtime
;
3542 struct timeval tv
[2];
3545 return utimes (filename
, tv
);
3546 #else /* not HAVE_UTIMES */
3548 utb
.actime
= EMACS_SECS (atime
);
3549 utb
.modtime
= EMACS_SECS (mtime
);
3550 return utime (filename
, &utb
);
3551 #endif /* not HAVE_UTIMES */
3554 /* mkdir and rmdir functions, for systems which don't have them. */
3558 * Written by Robert Rother, Mariah Corporation, August 1985.
3560 * If you want it, it's yours. All I ask in return is that if you
3561 * figure out how to do this in a Bourne Shell script you send me
3563 * sdcsvax!rmr or rmr@uscd
3565 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3566 * subroutine. 11Mar86; hoptoad!gnu
3568 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3569 * subroutine didn't return EEXIST. It does now.
3575 #ifdef MKDIR_PROTOTYPE
3579 mkdir (dpath
, dmode
)
3584 int cpid
, status
, fd
;
3585 struct stat statbuf
;
3587 if (stat (dpath
, &statbuf
) == 0)
3589 errno
= EEXIST
; /* Stat worked, so it already exists */
3593 /* If stat fails for a reason other than non-existence, return error */
3594 if (errno
!= ENOENT
)
3597 synch_process_alive
= 1;
3598 switch (cpid
= fork ())
3601 case -1: /* Error in fork */
3602 return (-1); /* Errno is set already */
3604 case 0: /* Child process */
3606 * Cheap hack to set mode of new directory. Since this
3607 * child process is going away anyway, we zap its umask.
3608 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3609 * directory. Does anybody care?
3611 status
= umask (0); /* Get current umask */
3612 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3613 fd
= sys_open("/dev/null", 2);
3620 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3621 _exit (-1); /* Can't exec /bin/mkdir */
3623 default: /* Parent process */
3624 wait_for_termination (cpid
);
3627 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3629 errno
= EIO
; /* We don't know why, but */
3630 return -1; /* /bin/mkdir failed */
3635 #endif /* not HAVE_MKDIR */
3642 int cpid
, status
, fd
;
3643 struct stat statbuf
;
3645 if (stat (dpath
, &statbuf
) != 0)
3647 /* Stat just set errno. We don't have to */
3651 synch_process_alive
= 1;
3652 switch (cpid
= fork ())
3655 case -1: /* Error in fork */
3656 return (-1); /* Errno is set already */
3658 case 0: /* Child process */
3659 fd
= sys_open("/dev/null", 2);
3666 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3667 _exit (-1); /* Can't exec /bin/rmdir */
3669 default: /* Parent process */
3670 wait_for_termination (cpid
);
3673 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3675 errno
= EIO
; /* We don't know why, but */
3676 return -1; /* /bin/rmdir failed */
3681 #endif /* !HAVE_RMDIR */
3685 /* Functions for VMS */
3687 #include "vms-pwd.h"
3692 /* Return as a string the VMS error string pertaining to STATUS.
3693 Reuses the same static buffer each time it is called. */
3697 int status
; /* VMS status code */
3701 static char buf
[257];
3703 bufadr
[0] = sizeof buf
- 1;
3704 bufadr
[1] = (int) buf
;
3705 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3706 return "untranslatable VMS error status";
3714 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3715 * not work correctly. (It also doesn't work well in version 2.3.)
3720 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3721 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3725 unsigned short s_buflen
;
3726 unsigned short s_code
;
3728 unsigned short *s_retlenadr
;
3732 #define buflen s.s_buflen
3733 #define code s.s_code
3734 #define bufadr s.s_bufadr
3735 #define retlenadr s.s_retlenadr
3737 #define R_OK 4 /* test for read permission */
3738 #define W_OK 2 /* test for write permission */
3739 #define X_OK 1 /* test for execute (search) permission */
3740 #define F_OK 0 /* test for presence of file */
3743 sys_access (path
, mode
)
3747 static char *user
= NULL
;
3750 /* translate possible directory spec into .DIR file name, so brain-dead
3751 * access can treat the directory like a file. */
3752 if (directory_file_name (path
, dir_fn
))
3756 return access (path
, mode
);
3757 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3763 unsigned short int dummy
;
3765 static int constant
= ACL$C_FILE
;
3766 DESCRIPTOR (path_desc
, path
);
3767 DESCRIPTOR (user_desc
, user
);
3771 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3774 acces
|= CHP$M_READ
;
3776 acces
|= CHP$M_WRITE
;
3777 itemlst
[0].buflen
= sizeof (int);
3778 itemlst
[0].code
= CHP$_FLAGS
;
3779 itemlst
[0].bufadr
= (char *) &flags
;
3780 itemlst
[0].retlenadr
= &dummy
;
3781 itemlst
[1].buflen
= sizeof (int);
3782 itemlst
[1].code
= CHP$_ACCESS
;
3783 itemlst
[1].bufadr
= (char *) &acces
;
3784 itemlst
[1].retlenadr
= &dummy
;
3785 itemlst
[2].end
= CHP$_END
;
3786 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3787 return stat
== SS$_NORMAL
? 0 : -1;
3791 #else /* not VMS4_4 */
3794 #define ACE$M_WRITE 2
3795 #define ACE$C_KEYID 1
3797 static unsigned short memid
, grpid
;
3798 static unsigned int uic
;
3800 /* Called from init_sys_modes, so it happens not very often
3801 but at least each time Emacs is loaded. */
3802 sys_access_reinit ()
3808 sys_access (filename
, type
)
3814 int status
, size
, i
, typecode
, acl_controlled
;
3815 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3816 union prvdef prvmask
;
3818 /* Get UIC and GRP values for protection checking. */
3821 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3824 memid
= uic
& 0xFFFF;
3828 if (type
!= 2) /* not checking write access */
3829 return access (filename
, type
);
3831 /* Check write protection. */
3833 #define CHECKPRIV(bit) (prvmask.bit)
3834 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3836 /* Find privilege bits */
3837 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3839 error ("Unable to find privileges: %s", vmserrstr (status
));
3840 if (CHECKPRIV (PRV$V_BYPASS
))
3841 return 0; /* BYPASS enabled */
3843 fab
.fab$b_fac
= FAB$M_GET
;
3844 fab
.fab$l_fna
= filename
;
3845 fab
.fab$b_fns
= strlen (filename
);
3846 fab
.fab$l_xab
= &xab
;
3847 xab
= cc$rms_xabpro
;
3848 xab
.xab$l_aclbuf
= aclbuf
;
3849 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3850 status
= SYS$
OPEN (&fab
, 0, 0);
3853 SYS$
CLOSE (&fab
, 0, 0);
3854 /* Check system access */
3855 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3857 /* Check ACL entries, if any */
3859 if (xab
.xab$w_acllen
> 0)
3862 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3863 while (*aclptr
&& aclptr
< aclend
)
3865 size
= (*aclptr
& 0xff) / 4;
3866 typecode
= (*aclptr
>> 8) & 0xff;
3867 if (typecode
== ACE$C_KEYID
)
3868 for (i
= size
- 1; i
> 1; i
--)
3869 if (aclptr
[i
] == uic
)
3872 if (aclptr
[1] & ACE$M_WRITE
)
3873 return 0; /* Write access through ACL */
3875 aclptr
= &aclptr
[size
];
3877 if (acl_controlled
) /* ACL specified, prohibits write access */
3880 /* No ACL entries specified, check normal protection */
3881 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3883 if (WRITABLE (XAB$V_GRP
) &&
3884 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3885 return 0; /* Group writable */
3886 if (WRITABLE (XAB$V_OWN
) &&
3887 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3888 return 0; /* Owner writable */
3890 return -1; /* Not writable */
3892 #endif /* not VMS4_4 */
3895 static char vtbuf
[NAM$C_MAXRSS
+1];
3897 /* translate a vms file spec to a unix path */
3899 sys_translate_vms (vfile
)
3910 /* leading device or logical name is a root directory */
3911 if (p
= strchr (vfile
, ':'))
3920 if (*p
== '[' || *p
== '<')
3922 while (*++vfile
!= *p
+ 2)
3926 if (vfile
[-1] == *p
)
3949 static char utbuf
[NAM$C_MAXRSS
+1];
3951 /* translate a unix path to a VMS file spec */
3953 sys_translate_unix (ufile
)
3976 if (index (&ufile
[1], '/'))
3983 if (index (&ufile
[1], '/'))
3990 if (strncmp (ufile
, "./", 2) == 0)
3997 ufile
++; /* skip the dot */
3998 if (index (&ufile
[1], '/'))
4003 else if (strncmp (ufile
, "../", 3) == 0)
4011 ufile
+= 2; /* skip the dots */
4012 if (index (&ufile
[1], '/'))
4037 extern char *getcwd ();
4039 #define MAXPATHLEN 1024
4041 ptr
= xmalloc (MAXPATHLEN
);
4042 val
= getcwd (ptr
, MAXPATHLEN
);
4048 strcpy (pathname
, ptr
);
4056 long item_code
= JPI$_OWNER
;
4057 unsigned long parent_id
;
4060 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4063 vaxc$errno
= status
;
4073 return (getgid () << 16) | getuid ();
4077 sys_read (fildes
, buf
, nbyte
)
4082 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4087 sys_write (fildes
, buf
, nbyte
)
4092 register int nwrote
, rtnval
= 0;
4094 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4100 return rtnval
? rtnval
: -1;
4101 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4102 return rtnval
? rtnval
: -1;
4103 return (rtnval
+ nwrote
);
4108 * VAX/VMS VAX C RTL really loses. It insists that records
4109 * end with a newline (carriage return) character, and if they
4110 * don't it adds one (nice of it isn't it!)
4112 * Thus we do this stupidity below.
4116 sys_write (fildes
, buf
, nbytes
)
4119 unsigned int nbytes
;
4126 fstat (fildes
, &st
);
4132 /* Handle fixed-length files with carriage control. */
4133 if (st
.st_fab_rfm
== FAB$C_FIX
4134 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4136 len
= st
.st_fab_mrs
;
4137 retval
= write (fildes
, p
, min (len
, nbytes
));
4140 retval
++; /* This skips the implied carriage control */
4144 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4145 while (*e
!= '\n' && e
> p
) e
--;
4146 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4147 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4149 retval
= write (fildes
, p
, len
);
4160 /* Create file NEW copying its attributes from file OLD. If
4161 OLD is 0 or does not exist, create based on the value of
4164 /* Protection value the file should ultimately have.
4165 Set by create_copy_attrs, and use by rename_sansversions. */
4166 static unsigned short int fab_final_pro
;
4169 creat_copy_attrs (old
, new)
4172 struct FAB fab
= cc$rms_fab
;
4173 struct XABPRO xabpro
;
4174 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4175 extern int vms_stmlf_recfm
;
4179 fab
.fab$b_fac
= FAB$M_GET
;
4180 fab
.fab$l_fna
= old
;
4181 fab
.fab$b_fns
= strlen (old
);
4182 fab
.fab$l_xab
= (char *) &xabpro
;
4183 xabpro
= cc$rms_xabpro
;
4184 xabpro
.xab$l_aclbuf
= aclbuf
;
4185 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4186 /* Call $OPEN to fill in the fab & xabpro fields. */
4187 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4189 SYS$
CLOSE (&fab
, 0, 0);
4190 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4191 if (xabpro
.xab$w_acllen
> 0)
4193 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4194 /* If the acl buffer was too short, redo open with longer one.
4195 Wouldn't need to do this if there were some system imposed
4196 limit on the size of an ACL, but I can't find any such. */
4198 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4199 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4200 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4201 SYS$
CLOSE (&fab
, 0, 0);
4207 xabpro
.xab$l_aclbuf
= 0;
4212 fab
.fab$l_fna
= new;
4213 fab
.fab$b_fns
= strlen (new);
4217 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4218 fab
.fab$b_rat
= FAB$M_CR
;
4221 /* Set the file protections such that we will be able to manipulate
4222 this file. Once we are done writing and renaming it, we will set
4223 the protections back. */
4225 fab_final_pro
= xabpro
.xab$w_pro
;
4227 SYS$
SETDFPROT (0, &fab_final_pro
);
4228 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4230 /* Create the new file with either default attrs or attrs copied
4232 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4234 SYS$
CLOSE (&fab
, 0, 0);
4235 /* As this is a "replacement" for creat, return a file descriptor
4236 opened for writing. */
4237 return open (new, O_WRONLY
);
4242 #include <varargs.h>
4245 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4249 sys_creat (va_alist
)
4252 va_list list_incrementer
;
4255 int rfd
; /* related file descriptor */
4256 int fd
; /* Our new file descriptor */
4263 extern int vms_stmlf_recfm
;
4266 va_start (list_incrementer
);
4267 name
= va_arg (list_incrementer
, char *);
4268 mode
= va_arg (list_incrementer
, int);
4270 rfd
= va_arg (list_incrementer
, int);
4271 va_end (list_incrementer
);
4274 /* Use information from the related file descriptor to set record
4275 format of the newly created file. */
4276 fstat (rfd
, &st_buf
);
4277 switch (st_buf
.st_fab_rfm
)
4280 strcpy (rfm
, "rfm = fix");
4281 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4282 strcpy (rat
, "rat = ");
4283 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4285 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4286 strcat (rat
, "ftn");
4287 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4288 strcat (rat
, "prn");
4289 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4290 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4291 strcat (rat
, ", blk");
4293 strcat (rat
, "blk");
4294 return creat (name
, 0, rfm
, rat
, mrs
);
4297 strcpy (rfm
, "rfm = vfc");
4298 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4299 strcpy (rat
, "rat = ");
4300 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4302 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4303 strcat (rat
, "ftn");
4304 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4305 strcat (rat
, "prn");
4306 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4307 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4308 strcat (rat
, ", blk");
4310 strcat (rat
, "blk");
4311 return creat (name
, 0, rfm
, rat
, fsz
);
4314 strcpy (rfm
, "rfm = stm");
4318 strcpy (rfm
, "rfm = stmcr");
4322 strcpy (rfm
, "rfm = stmlf");
4326 strcpy (rfm
, "rfm = udf");
4330 strcpy (rfm
, "rfm = var");
4333 strcpy (rat
, "rat = ");
4334 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4336 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4337 strcat (rat
, "ftn");
4338 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4339 strcat (rat
, "prn");
4340 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4341 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4342 strcat (rat
, ", blk");
4344 strcat (rat
, "blk");
4348 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4349 strcpy (rat
, "rat=cr");
4351 /* Until the VAX C RTL fixes the many bugs with modes, always use
4352 mode 0 to get the user's default protection. */
4353 fd
= creat (name
, 0, rfm
, rat
);
4354 if (fd
< 0 && errno
== EEXIST
)
4356 if (unlink (name
) < 0)
4357 report_file_error ("delete", build_string (name
));
4358 fd
= creat (name
, 0, rfm
, rat
);
4364 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4365 sys_fwrite (ptr
, size
, num
, fp
)
4366 register char * ptr
;
4369 register int tot
= num
* size
;
4376 * The VMS C library routine creat actually creates a new version of an
4377 * existing file rather than truncating the old version. There are times
4378 * when this is not the desired behavior, for instance, when writing an
4379 * auto save file (you only want one version), or when you don't have
4380 * write permission in the directory containing the file (but the file
4381 * itself is writable). Hence this routine, which is equivalent to
4382 * "close (creat (fn, 0));" on Unix if fn already exists.
4388 struct FAB xfab
= cc$rms_fab
;
4389 struct RAB xrab
= cc$rms_rab
;
4392 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4393 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4394 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4395 xfab
.fab$l_fna
= fn
;
4396 xfab
.fab$b_fns
= strlen (fn
);
4397 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4399 xrab
.rab$l_fab
= &xfab
;
4401 /* This gibberish opens the file, positions to the first record, and
4402 deletes all records from there until the end of file. */
4403 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4405 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4406 (SYS$
FIND (&xrab
) & 01) == 01 &&
4407 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4418 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4419 SYSPRV or a readable SYSUAF.DAT. */
4425 * Routine to read the VMS User Authorization File and return
4426 * a specific user's record.
4429 static struct UAF retuaf
;
4432 get_uaf_name (uname
)
4439 uaf_fab
= cc$rms_fab
;
4440 uaf_rab
= cc$rms_rab
;
4441 /* initialize fab fields */
4442 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4443 uaf_fab
.fab$b_fns
= 21;
4444 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4445 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4446 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4447 /* initialize rab fields */
4448 uaf_rab
.rab$l_fab
= &uaf_fab
;
4449 /* open the User Authorization File */
4450 status
= SYS$
OPEN (&uaf_fab
);
4454 vaxc$errno
= status
;
4457 status
= SYS$
CONNECT (&uaf_rab
);
4461 vaxc$errno
= status
;
4464 /* read the requested record - index is in uname */
4465 uaf_rab
.rab$l_kbf
= uname
;
4466 uaf_rab
.rab$b_ksz
= strlen (uname
);
4467 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4468 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4469 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4470 status
= SYS$
GET (&uaf_rab
);
4474 vaxc$errno
= status
;
4477 /* close the User Authorization File */
4478 status
= SYS$
DISCONNECT (&uaf_rab
);
4482 vaxc$errno
= status
;
4485 status
= SYS$
CLOSE (&uaf_fab
);
4489 vaxc$errno
= status
;
4503 uaf_fab
= cc$rms_fab
;
4504 uaf_rab
= cc$rms_rab
;
4505 /* initialize fab fields */
4506 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4507 uaf_fab
.fab$b_fns
= 21;
4508 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4509 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4510 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4511 /* initialize rab fields */
4512 uaf_rab
.rab$l_fab
= &uaf_fab
;
4513 /* open the User Authorization File */
4514 status
= SYS$
OPEN (&uaf_fab
);
4518 vaxc$errno
= status
;
4521 status
= SYS$
CONNECT (&uaf_rab
);
4525 vaxc$errno
= status
;
4528 /* read the requested record - index is in uic */
4529 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4530 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4531 uaf_rab
.rab$b_ksz
= sizeof uic
;
4532 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4533 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4534 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4535 status
= SYS$
GET (&uaf_rab
);
4539 vaxc$errno
= status
;
4542 /* close the User Authorization File */
4543 status
= SYS$
DISCONNECT (&uaf_rab
);
4547 vaxc$errno
= status
;
4550 status
= SYS$
CLOSE (&uaf_fab
);
4554 vaxc$errno
= status
;
4560 static struct passwd retpw
;
4568 /* copy these out first because if the username is 32 chars, the next
4569 section will overwrite the first byte of the UIC */
4570 retpw
.pw_uid
= up
->uaf$w_mem
;
4571 retpw
.pw_gid
= up
->uaf$w_grp
;
4573 /* I suppose this is not the best style, to possibly overwrite one
4574 byte beyond the end of the field, but what the heck... */
4575 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4576 while (ptr
[-1] == ' ')
4579 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4581 /* the rest of these are counted ascii strings */
4582 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4583 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4584 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4585 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4586 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4587 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4588 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4589 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4593 #else /* not READ_SYSUAF */
4594 static struct passwd retpw
;
4595 #endif /* not READ_SYSUAF */
4606 unsigned char * full
;
4607 #endif /* READ_SYSUAF */
4612 if ('a' <= *ptr
&& *ptr
<= 'z')
4617 if (!(up
= get_uaf_name (name
)))
4619 return cnv_uaf_pw (up
);
4621 if (strcmp (name
, getenv ("USER")) == 0)
4623 retpw
.pw_uid
= getuid ();
4624 retpw
.pw_gid
= getgid ();
4625 strcpy (retpw
.pw_name
, name
);
4626 if (full
= egetenv ("FULLNAME"))
4627 strcpy (retpw
.pw_gecos
, full
);
4629 *retpw
.pw_gecos
= '\0';
4630 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4631 *retpw
.pw_shell
= '\0';
4636 #endif /* not READ_SYSUAF */
4646 if (!(up
= get_uaf_uic (uid
)))
4648 return cnv_uaf_pw (up
);
4650 if (uid
== sys_getuid ())
4651 return getpwnam (egetenv ("USER"));
4654 #endif /* not READ_SYSUAF */
4657 /* return total address space available to the current process. This is
4658 the sum of the current p0 size, p1 size and free page table entries
4663 unsigned long free_pages
;
4664 unsigned long frep0va
;
4665 unsigned long frep1va
;
4668 item_code
= JPI$_FREPTECNT
;
4669 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4672 vaxc$errno
= status
;
4677 item_code
= JPI$_FREP0VA
;
4678 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4681 vaxc$errno
= status
;
4684 item_code
= JPI$_FREP1VA
;
4685 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4688 vaxc$errno
= status
;
4692 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4695 define_logical_name (varname
, string
)
4699 struct dsc$descriptor_s strdsc
=
4700 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4701 struct dsc$descriptor_s envdsc
=
4702 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4703 struct dsc$descriptor_s lnmdsc
=
4704 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4706 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4709 delete_logical_name (varname
)
4712 struct dsc$descriptor_s envdsc
=
4713 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4714 struct dsc$descriptor_s lnmdsc
=
4715 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4717 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4728 error ("execvp system call not implemented");
4736 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4737 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4738 char from_esn
[NAM$C_MAXRSS
];
4739 char to_esn
[NAM$C_MAXRSS
];
4741 from_fab
.fab$l_fna
= from
;
4742 from_fab
.fab$b_fns
= strlen (from
);
4743 from_fab
.fab$l_nam
= &from_nam
;
4744 from_fab
.fab$l_fop
= FAB$M_NAM
;
4746 from_nam
.nam$l_esa
= from_esn
;
4747 from_nam
.nam$b_ess
= sizeof from_esn
;
4749 to_fab
.fab$l_fna
= to
;
4750 to_fab
.fab$b_fns
= strlen (to
);
4751 to_fab
.fab$l_nam
= &to_nam
;
4752 to_fab
.fab$l_fop
= FAB$M_NAM
;
4754 to_nam
.nam$l_esa
= to_esn
;
4755 to_nam
.nam$b_ess
= sizeof to_esn
;
4757 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4763 if (status
== RMS$_DEV
)
4767 vaxc$errno
= status
;
4772 /* This function renames a file like `rename', but it strips
4773 the version number from the "to" filename, such that the "to" file is
4774 will always be a new version. It also sets the file protection once it is
4775 finished. The protection that we will use is stored in fab_final_pro,
4776 and was set when we did a creat_copy_attrs to create the file that we
4779 We could use the chmod function, but Eunichs uses 3 bits per user category
4780 to describe the protection, and VMS uses 4 (write and delete are separate
4781 bits). To maintain portability, the VMS implementation of `chmod' wires
4782 the W and D bits together. */
4785 static struct fibdef fib
; /* We need this initialized to zero */
4786 char vms_file_written
[NAM$C_MAXRSS
];
4789 rename_sans_version (from
,to
)
4796 struct FAB to_fab
= cc$rms_fab
;
4797 struct NAM to_nam
= cc$rms_nam
;
4798 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4799 struct dsc$descriptor fib_attr
[2]
4800 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4801 char to_esn
[NAM$C_MAXRSS
];
4803 $
DESCRIPTOR (disk
,to_esn
);
4805 to_fab
.fab$l_fna
= to
;
4806 to_fab
.fab$b_fns
= strlen (to
);
4807 to_fab
.fab$l_nam
= &to_nam
;
4808 to_fab
.fab$l_fop
= FAB$M_NAM
;
4810 to_nam
.nam$l_esa
= to_esn
;
4811 to_nam
.nam$b_ess
= sizeof to_esn
;
4813 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4815 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4816 *(to_nam
.nam$l_ver
) = '\0';
4818 stat
= rename (from
, to_esn
);
4822 strcpy (vms_file_written
, to_esn
);
4824 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4825 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4827 /* Now set the file protection to the correct value */
4828 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4830 /* Copy these fields into the fib */
4831 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4832 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4833 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4835 SYS$
CLOSE (&to_fab
, 0, 0);
4837 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4840 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4841 0, 0, 0, &fib_attr
, 0);
4844 stat
= SYS$
DASSGN (chan
);
4847 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4857 unsigned short fid
[3];
4858 char esa
[NAM$C_MAXRSS
];
4861 fab
.fab$l_fop
= FAB$M_OFP
;
4862 fab
.fab$l_fna
= file
;
4863 fab
.fab$b_fns
= strlen (file
);
4864 fab
.fab$l_nam
= &nam
;
4867 nam
.nam$l_esa
= esa
;
4868 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4870 status
= SYS$
PARSE (&fab
);
4871 if ((status
& 1) == 0)
4874 vaxc$errno
= status
;
4877 status
= SYS$
SEARCH (&fab
);
4878 if ((status
& 1) == 0)
4881 vaxc$errno
= status
;
4885 fid
[0] = nam
.nam$w_fid
[0];
4886 fid
[1] = nam
.nam$w_fid
[1];
4887 fid
[2] = nam
.nam$w_fid
[2];
4889 fab
.fab$l_fna
= new;
4890 fab
.fab$b_fns
= strlen (new);
4892 status
= SYS$
PARSE (&fab
);
4893 if ((status
& 1) == 0)
4896 vaxc$errno
= status
;
4900 nam
.nam$w_fid
[0] = fid
[0];
4901 nam
.nam$w_fid
[1] = fid
[1];
4902 nam
.nam$w_fid
[2] = fid
[2];
4904 nam
.nam$l_esa
= nam
.nam$l_name
;
4905 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4907 status
= SYS$
ENTER (&fab
);
4908 if ((status
& 1) == 0)
4911 vaxc$errno
= status
;
4921 printf ("%s not yet implemented\r\n", badfunc
);
4929 /* Arrange to return a range centered on zero. */
4930 return rand () - (1 << 30);
4941 /* Called from init_sys_modes. */
4946 /* If we're not on an HFT we shouldn't do any of this. We determine
4947 if we are on an HFT by trying to get an HFT error code. If this
4948 call fails, we're not on an HFT. */
4950 if (ioctl (0, HFQERROR
, &junk
) < 0)
4952 #else /* not IBMR2AIX */
4953 if (ioctl (0, HFQEIO
, 0) < 0)
4955 #endif /* not IBMR2AIX */
4957 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4958 as the rubout key's ASCII code. Here this is changed. The bug is that
4959 there's no way to determine the old mapping, so in reset_sys_modes
4960 we need to assume that the normal map had been present. Of course, this
4961 code also doesn't help if on a terminal emulator which doesn't understand
4965 struct hfkeymap keymap
;
4967 buf
.hf_bufp
= (char *)&keymap
;
4968 buf
.hf_buflen
= sizeof (keymap
);
4969 keymap
.hf_nkeys
= 2;
4970 keymap
.hfkey
[0].hf_kpos
= 15;
4971 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4973 keymap
.hfkey
[0].hf_keyidh
= '<';
4974 #else /* not IBMR2AIX */
4975 keymap
.hfkey
[0].hf_page
= '<';
4976 #endif /* not IBMR2AIX */
4977 keymap
.hfkey
[0].hf_char
= 127;
4978 keymap
.hfkey
[1].hf_kpos
= 15;
4979 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4981 keymap
.hfkey
[1].hf_keyidh
= '<';
4982 #else /* not IBMR2AIX */
4983 keymap
.hfkey
[1].hf_page
= '<';
4984 #endif /* not IBMR2AIX */
4985 keymap
.hfkey
[1].hf_char
= 127;
4986 hftctl (0, HFSKBD
, &buf
);
4988 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4990 line_ins_del_ok
= char_ins_del_ok
= 0;
4993 /* Reset the rubout key to backspace. */
4998 struct hfkeymap keymap
;
5002 if (ioctl (0, HFQERROR
, &junk
) < 0)
5004 #else /* not IBMR2AIX */
5005 if (ioctl (0, HFQEIO
, 0) < 0)
5007 #endif /* not IBMR2AIX */
5009 buf
.hf_bufp
= (char *)&keymap
;
5010 buf
.hf_buflen
= sizeof (keymap
);
5011 keymap
.hf_nkeys
= 2;
5012 keymap
.hfkey
[0].hf_kpos
= 15;
5013 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5015 keymap
.hfkey
[0].hf_keyidh
= '<';
5016 #else /* not IBMR2AIX */
5017 keymap
.hfkey
[0].hf_page
= '<';
5018 #endif /* not IBMR2AIX */
5019 keymap
.hfkey
[0].hf_char
= 8;
5020 keymap
.hfkey
[1].hf_kpos
= 15;
5021 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5023 keymap
.hfkey
[1].hf_keyidh
= '<';
5024 #else /* not IBMR2AIX */
5025 keymap
.hfkey
[1].hf_page
= '<';
5026 #endif /* not IBMR2AIX */
5027 keymap
.hfkey
[1].hf_char
= 8;
5028 hftctl (0, HFSKBD
, &buf
);
5035 /* These are included on Sunos 4.1 when we do not use shared libraries.
5036 X11 libraries may refer to these functions but (we hope) do not
5037 actually call them. */
5057 #endif /* USE_DL_STUBS */
5066 register int length
;
5070 long max_str
= 65535;
5072 while (length
> max_str
) {
5073 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5078 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5080 while (length
-- > 0)
5082 #endif /* not VMS */
5085 #endif /* no bzero */
5086 #endif /* BSTRING */
5088 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5091 /* Saying `void' requires a declaration, above, where bcopy is used
5092 and that declaration causes pain for systems where bcopy is a macro. */
5093 bcopy (b1
, b2
, length
)
5096 register int length
;
5099 long max_str
= 65535;
5101 while (length
> max_str
) {
5102 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5108 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5110 while (length
-- > 0)
5112 #endif /* not VMS */
5114 #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5119 bcmp (b1
, b2
, length
) /* This could be a macro! */
5122 register int length
;
5125 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5126 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5128 return STR$
COMPARE (&src1
, &src2
);
5130 while (length
-- > 0)
5135 #endif /* not VMS */
5137 #endif /* no bcmp */
5138 #endif /* not BSTRING */