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_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG)
128 because the vms compiler doesn't grok `defined' */
136 #endif /* not 4.1 bsd */
139 #include <sys/ioctl.h>
145 #ifdef BROKEN_TIOCGWINSZ
151 #include <sys/utsname.h>
153 #ifndef MEMORY_IN_STRING_H
156 #if defined (TIOCGWINSZ) || defined (ISC4_0)
158 #include <sys/sioctl.h>
161 #include <sys/stream.h>
162 #include <sys/ptem.h>
164 #endif /* TIOCGWINSZ or ISC4_0 */
167 extern int quit_char
;
171 #include "termhooks.h"
172 #include "termchar.h"
173 #include "termopts.h"
174 #include "dispextern.h"
179 /* In process.h which conflicts with the local copy. */
181 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
182 int _CRTAPI1
_getpid (void);
185 #ifdef NONSYSTEM_DIR_LIBRARY
187 #endif /* NONSYSTEM_DIR_LIBRARY */
189 #include "syssignal.h"
196 #ifndef HAVE_STRUCT_UTIMBUF
197 /* We want to use utime rather than utimes, but we couldn't find the
198 structure declaration. We'll use the traditional one. */
206 #ifndef VFORK_RETURN_TYPE
207 #define VFORK_RETURN_TYPE int
210 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
216 #define LNOFLSH 0100000
219 static int baud_convert
[] =
224 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
225 1800, 2400, 4800, 9600, 19200, 38400
229 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
232 #if defined (HAVE_TERMIOS_H) && defined (LINUX)
234 /* HJL's version of libc is said to need this on the Alpha.
235 On the other hand, DEC OSF1 on the Alpha needs ospeed to be a short. */
236 extern speed_t ospeed
;
242 /* The file descriptor for Emacs's input terminal.
243 Under Unix, this is normally zero except when using X;
244 under VMS, we place the input channel number here. */
247 /* Specify a different file descriptor for further input operations. */
256 /* Discard pending input on descriptor input_fd. */
261 struct emacs_tty buf
;
266 /* Discarding input is not safe when the input could contain
267 replies from the X server. So don't do it. */
268 if (read_socket_hook
)
273 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
274 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
280 ioctl (input_fd
, TIOCFLUSH
, &zero
);
282 #else /* not Apollo */
283 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
284 while (dos_keyread () != -1)
286 #else /* not MSDOS */
287 EMACS_GET_TTY (input_fd
, &buf
);
288 EMACS_SET_TTY (input_fd
, &buf
, 0);
289 #endif /* not MSDOS */
290 #endif /* not Apollo */
292 #endif /* not WINDOWSNT */
297 /* Arrange for character C to be read as the next input from
303 if (read_socket_hook
)
306 /* Should perhaps error if in batch mode */
308 ioctl (input_fd
, TIOCSTI
, &c
);
309 #else /* no TIOCSTI */
310 error ("Cannot stuff terminal input characters in this version of Unix");
311 #endif /* no TIOCSTI */
322 #ifdef INIT_BAUD_RATE
327 #else /* not DOS_NT */
331 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
332 &sg
.class, 12, 0, 0, 0, 0 );
333 ospeed
= sg
.xmit_baud
;
339 tcgetattr (input_fd
, &sg
);
340 ospeed
= cfgetospeed (&sg
);
341 #if defined (USE_GETOBAUD) && defined (getobaud)
342 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
344 ospeed
= getobaud (sg
.c_cflag
);
346 #else /* neither VMS nor TERMIOS */
352 tcgetattr (input_fd
, &sg
);
354 ioctl (input_fd
, TCGETA
, &sg
);
356 ospeed
= sg
.c_cflag
& CBAUD
;
357 #else /* neither VMS nor TERMIOS nor TERMIO */
360 sg
.sg_ospeed
= B9600
;
361 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
363 ospeed
= sg
.sg_ospeed
;
364 #endif /* not HAVE_TERMIO */
365 #endif /* not HAVE_TERMIOS */
367 #endif /* not DOS_NT */
368 #endif /* not INIT_BAUD_RATE */
371 baud_rate
= (ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
372 ? baud_convert
[ospeed
] : 9600);
378 set_exclusive_use (fd
)
382 ioctl (fd
, FIOCLEX
, 0);
384 /* Ok to do nothing if this feature does not exist */
389 wait_without_blocking ()
392 wait3 (0, WNOHANG
| WUNTRACED
, 0);
394 croak ("wait_without_blocking");
396 synch_process_alive
= 0;
399 #endif /* not subprocesses */
401 int wait_debugging
; /* Set nonzero to make following function work under dbx
402 (at least for bsd). */
405 wait_for_termination_signal ()
408 /* Wait for subprocess with process id `pid' to terminate and
409 make sure it will get eliminated (not remain forever as a zombie) */
411 wait_for_termination (pid
)
420 status
= SYS$
FORCEX (&pid
, 0, 0);
423 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
424 /* Note that kill returns -1 even if the process is just a zombie now.
425 But inevitably a SIGCHLD interrupt should be generated
426 and child_sig will do wait3 and make the process go away. */
427 /* There is some indication that there is a bug involved with
428 termination of subprocesses, perhaps involving a kernel bug too,
429 but no idea what it is. Just as a hunch we signal SIGCHLD to see
430 if that causes the problem to go away or get worse. */
431 sigsetmask (sigmask (SIGCHLD
));
432 if (0 > kill (pid
, 0))
434 sigsetmask (SIGEMPTYMASK
);
435 kill (getpid (), SIGCHLD
);
441 sigpause (SIGEMPTYMASK
);
442 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
443 #if defined (UNIPLUS)
444 if (0 > kill (pid
, 0))
447 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
448 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
449 sigblock (sigmask (SIGCHLD
));
450 if (0 > kill (pid
, 0))
452 sigunblock (sigmask (SIGCHLD
));
455 sigpause (SIGEMPTYMASK
);
456 #else /* not POSIX_SIGNALS */
457 #ifdef HAVE_SYSV_SIGPAUSE
459 if (0 > kill (pid
, 0))
465 #else /* not HAVE_SYSV_SIGPAUSE */
469 #else /* not WINDOWSNT */
470 if (0 > kill (pid
, 0))
472 /* Using sleep instead of pause avoids timing error.
473 If the inferior dies just before the sleep,
474 we lose just one second. */
476 #endif /* not WINDOWSNT */
477 #endif /* not HAVE_SYSV_SIGPAUSE */
478 #endif /* not POSIX_SIGNALS */
479 #endif /* not UNIPLUS */
480 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
482 #else /* not subprocesses */
485 #else /* not __DJGPP__ > 1 */
487 if (kill (pid
, 0) < 0)
493 if (status
== pid
|| status
== -1)
496 #endif /* not __DJGPP__ > 1*/
497 #endif /* not subprocesses */
504 * flush any pending output
505 * (may flush input as well; it does not matter the way we use it)
508 flush_pending_output (channel
)
512 /* If we try this, we get hit with SIGTTIN, because
513 the child's tty belongs to the child's pgrp. */
516 ioctl (channel
, TCFLSH
, 1);
520 /* 3rd arg should be ignored
521 but some 4.2 kernels actually want the address of an int
522 and nonzero means something different. */
523 ioctl (channel
, TIOCFLUSH
, &zero
);
530 /* Set up the terminal at the other end of a pseudo-terminal that
531 we will be controlling an inferior through.
532 It should not echo or do line-editing, since that is done
533 in Emacs. No padding needed for insertion into an Emacs buffer. */
535 child_setup_tty (out
)
541 EMACS_GET_TTY (out
, &s
);
543 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
544 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
545 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
547 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
548 /* No output delays */
550 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
551 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
553 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
556 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
559 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
561 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
562 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
564 /* Said to be unnecessary: */
565 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
566 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
569 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
570 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
571 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
572 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
575 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
579 /* AIX enhanced edit loses NULs, so disable it */
582 s
.main
.c_iflag
&= ~ASCEDIT
;
584 /* Also, PTY overloads NUL and BREAK.
585 don't ignore break, but don't signal either, so it looks like NUL. */
586 s
.main
.c_iflag
&= ~IGNBRK
;
587 s
.main
.c_iflag
&= ~BRKINT
;
588 /* QUIT and INTR work better as signals, so disable character forms */
589 s
.main
.c_cc
[VINTR
] = 0377;
590 #ifdef SIGNALS_VIA_CHARACTERS
591 /* the QUIT and INTR character are used in process_send_signal
592 so set them here to something useful. */
593 if (s
.main
.c_cc
[VQUIT
] == 0377)
594 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
595 if (s
.main
.c_cc
[VINTR
] == 0377)
596 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
597 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
598 /* QUIT and INTR work better as signals, so disable character forms */
599 s
.main
.c_cc
[VQUIT
] = 0377;
600 s
.main
.c_cc
[VINTR
] = 0377;
601 s
.main
.c_lflag
&= ~ISIG
;
602 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
603 s
.main
.c_cc
[VEOL
] = 0377;
604 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
607 #else /* not HAVE_TERMIO */
609 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
611 s
.main
.sg_flags
|= LPASS8
;
612 s
.main
.sg_erase
= 0377;
613 s
.main
.sg_kill
= 0377;
614 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
616 #endif /* not HAVE_TERMIO */
618 EMACS_SET_TTY (out
, &s
, 0);
627 ioctl (out
, FIOASYNC
, &zero
);
630 #endif /* not DOS_NT */
634 #endif /* subprocesses */
636 /* Record a signal code and the handler for it. */
640 SIGTYPE (*handler
) ();
643 /* Suspend the Emacs process; give terminal to its superior. */
648 /* "Foster" parentage allows emacs to return to a subprocess that attached
649 to the current emacs as a cheaper than starting a whole new process. This
650 is set up by KEPTEDITOR.COM. */
651 unsigned long parent_id
, foster_parent_id
;
654 fpid_string
= getenv ("EMACS_PARENT_PID");
655 if (fpid_string
!= NULL
)
657 sscanf (fpid_string
, "%x", &foster_parent_id
);
658 if (foster_parent_id
!= 0)
659 parent_id
= foster_parent_id
;
661 parent_id
= getppid ();
664 parent_id
= getppid ();
666 xfree (fpid_string
); /* On VMS, this was malloc'd */
668 if (parent_id
&& parent_id
!= 0xffffffff)
670 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
671 int status
= LIB$
ATTACH (&parent_id
) & 1;
672 signal (SIGINT
, oldsig
);
681 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
682 d_prompt
.a
= "Emacs: "; /* Just a reminder */
683 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
688 #if defined(SIGTSTP) && !defined(MSDOS)
691 int pgrp
= EMACS_GETPGRP (0);
692 EMACS_KILLPG (pgrp
, SIGTSTP
);
695 #else /* No SIGTSTP */
696 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
697 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
698 kill (getpid (), SIGQUIT
);
700 #else /* No SIGTSTP or USG_JOBCTRL */
702 /* On a system where suspending is not implemented,
703 instead fork a subshell and let it talk directly to the terminal
707 #endif /* no USG_JOBCTRL */
708 #endif /* no SIGTSTP */
712 /* Fork a subshell. */
717 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
719 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
722 struct save_signal saved_handlers
[5];
724 unsigned char *str
= 0;
727 saved_handlers
[0].code
= SIGINT
;
728 saved_handlers
[1].code
= SIGQUIT
;
729 saved_handlers
[2].code
= SIGTERM
;
731 saved_handlers
[3].code
= SIGIO
;
732 saved_handlers
[4].code
= 0;
734 saved_handlers
[3].code
= 0;
737 /* Mentioning current_buffer->buffer would mean including buffer.h,
738 which somehow wedges the hp compiler. So instead... */
740 dir
= intern ("default-directory");
741 if (NILP (Fboundp (dir
)))
743 dir
= Fsymbol_value (dir
);
747 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
748 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
749 len
= XSTRING (dir
)->size
;
750 bcopy (XSTRING (dir
)->data
, str
, len
);
751 if (str
[len
- 1] != '/') str
[len
++] = '/';
757 #else /* not WINDOWSNT */
762 save_signal_handlers (saved_handlers
);
763 synch_process_alive
= 1;
764 #endif /* __DJGPP__ > 1 */
768 error ("Can't spawn subshell");
772 #endif /* not WINDOWSNT */
776 #ifdef MSDOS /* MW, Aug 1993 */
779 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
782 sh
= (char *) egetenv ("SHELL");
786 /* Use our buffer's default directory for the subshell. */
791 close_process_descs (); /* Close Emacs's pipes/ptys */
794 #ifdef SET_EMACS_PRIORITY
796 extern int emacs_priority
;
798 if (emacs_priority
< 0)
799 nice (-emacs_priority
);
803 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
806 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
808 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
810 #else /* not MSDOS */
812 /* Waits for process completion */
813 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
815 write (1, "Can't execute subshell", 22);
818 #else /* not WINDOWSNT */
820 write (1, "Can't execute subshell", 22);
822 #endif /* not WINDOWSNT */
823 #endif /* not MSDOS */
826 /* Do this now if we did not do it before. */
827 #if !defined (MSDOS) || __DJGPP__ == 1
828 save_signal_handlers (saved_handlers
);
829 synch_process_alive
= 1;
833 wait_for_termination (pid
);
835 restore_signal_handlers (saved_handlers
);
836 synch_process_alive
= 0;
840 save_signal_handlers (saved_handlers
)
841 struct save_signal
*saved_handlers
;
843 while (saved_handlers
->code
)
845 saved_handlers
->handler
846 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
851 restore_signal_handlers (saved_handlers
)
852 struct save_signal
*saved_handlers
;
854 while (saved_handlers
->code
)
856 signal (saved_handlers
->code
, saved_handlers
->handler
);
869 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
870 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
872 interrupts_deferred
= 0;
880 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
884 if (read_socket_hook
)
888 sigunblock (sigmask (SIGWINCH
));
890 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
892 interrupts_deferred
= 0;
897 if (read_socket_hook
)
901 sigblock (sigmask (SIGWINCH
));
903 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
904 interrupts_deferred
= 1;
907 #else /* no FASYNC */
908 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
914 if (read_socket_hook
)
917 ioctl (input_fd
, FIOASYNC
, &on
);
918 interrupts_deferred
= 0;
925 if (read_socket_hook
)
928 ioctl (input_fd
, FIOASYNC
, &off
);
929 interrupts_deferred
= 1;
932 #else /* not FASYNC, not STRIDE */
943 if (read_socket_hook
)
947 sigaddset(&st
, SIGIO
);
948 ioctl (input_fd
, FIOASYNC
, &on
);
949 interrupts_deferred
= 0;
950 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
957 if (read_socket_hook
)
960 ioctl (input_fd
, FIOASYNC
, &off
);
961 interrupts_deferred
= 1;
968 if (read_socket_hook
)
971 croak ("request_sigio");
976 if (read_socket_hook
)
979 croak ("unrequest_sigio");
987 /* Saving and restoring the process group of Emacs's terminal. */
991 /* The process group of which Emacs was a member when it initially
994 If Emacs was in its own process group (i.e. inherited_pgroup ==
995 getpid ()), then we know we're running under a shell with job
996 control (Emacs would never be run as part of a pipeline).
999 If Emacs was not in its own process group, then we know we're
1000 running under a shell (or a caller) that doesn't know how to
1001 separate itself from Emacs (like sh). Emacs must be in its own
1002 process group in order to receive SIGIO correctly. In this
1003 situation, we put ourselves in our own pgroup, forcibly set the
1004 tty's pgroup to our pgroup, and make sure to restore and reinstate
1005 the tty's pgroup just like any other terminal setting. If
1006 inherited_group was not the tty's pgroup, then we'll get a
1007 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1008 it goes foreground in the future, which is what should happen. */
1009 int inherited_pgroup
;
1011 /* Split off the foreground process group to Emacs alone.
1012 When we are in the foreground, but not started in our own process
1013 group, redirect the TTY to point to our own process group. We need
1014 to be in our own process group to receive SIGIO properly. */
1015 narrow_foreground_group ()
1019 setpgrp (0, inherited_pgroup
);
1020 if (inherited_pgroup
!= me
)
1021 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1025 /* Set the tty to our original foreground group. */
1026 widen_foreground_group ()
1028 if (inherited_pgroup
!= getpid ())
1029 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1030 setpgrp (0, inherited_pgroup
);
1033 #endif /* BSD_PGRPS */
1035 /* Getting and setting emacs_tty structures. */
1037 /* Set *TC to the parameters associated with the terminal FD.
1038 Return zero if all's well, or -1 if we ran into an error we
1039 couldn't deal with. */
1041 emacs_get_tty (fd
, settings
)
1043 struct emacs_tty
*settings
;
1045 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1047 /* We have those nifty POSIX tcmumbleattr functions. */
1048 if (tcgetattr (fd
, &settings
->main
) < 0)
1053 /* The SYSV-style interface? */
1054 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1059 /* Vehemently Monstrous System? :-) */
1060 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1061 &settings
->main
.class, 12, 0, 0, 0, 0)
1067 /* I give up - I hope you have the BSD ioctls. */
1068 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1070 #endif /* not DOS_NT */
1075 /* Suivant - Do we have to get struct ltchars data? */
1077 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1081 /* How about a struct tchars and a wordful of lmode bits? */
1083 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1084 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1088 /* We have survived the tempest. */
1093 /* Set the parameters of the tty on FD according to the contents of
1094 *SETTINGS. If FLUSHP is non-zero, we discard input.
1095 Return 0 if all went well, and -1 if anything failed. */
1098 emacs_set_tty (fd
, settings
, flushp
)
1100 struct emacs_tty
*settings
;
1103 /* Set the primary parameters - baud rate, character size, etcetera. */
1106 /* We have those nifty POSIX tcmumbleattr functions.
1107 William J. Smith <wjs@wiis.wang.com> writes:
1108 "POSIX 1003.1 defines tcsetattr() to return success if it was
1109 able to perform any of the requested actions, even if some
1110 of the requested actions could not be performed.
1111 We must read settings back to ensure tty setup properly.
1112 AIX requires this to keep tty from hanging occasionally." */
1113 /* This make sure that we don't loop indefinitely in here. */
1114 for (i
= 0 ; i
< 10 ; i
++)
1115 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1126 /* Get the current settings, and see if they're what we asked for. */
1127 tcgetattr (fd
, &new);
1128 /* We cannot use memcmp on the whole structure here because under
1129 * aix386 the termios structure has some reserved field that may
1132 if ( new.c_iflag
== settings
->main
.c_iflag
1133 && new.c_oflag
== settings
->main
.c_oflag
1134 && new.c_cflag
== settings
->main
.c_cflag
1135 && new.c_lflag
== settings
->main
.c_lflag
1136 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1144 /* The SYSV-style interface? */
1145 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1150 /* Vehemently Monstrous System? :-) */
1151 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1152 &settings
->main
.class, 12, 0, 0, 0, 0)
1158 /* I give up - I hope you have the BSD ioctls. */
1159 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1161 #endif /* not DOS_NT */
1167 /* Suivant - Do we have to get struct ltchars data? */
1169 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1173 /* How about a struct tchars and a wordful of lmode bits? */
1175 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1176 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1180 /* We have survived the tempest. */
1185 /* The initial tty mode bits */
1186 struct emacs_tty old_tty
;
1188 /* 1 if we have been through init_sys_modes. */
1191 /* 1 if outer tty status has been recorded. */
1195 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1200 #ifndef F_SETOWN_BUG
1202 int old_fcntl_owner
;
1203 #endif /* F_SETOWN */
1204 #endif /* F_SETOWN_BUG */
1206 /* This may also be defined in stdio,
1207 but if so, this does no harm,
1208 and using the same name avoids wasting the other one's space. */
1210 #if defined (USG) || defined (DGUX)
1211 unsigned char _sobuf
[BUFSIZ
+8];
1213 char _sobuf
[BUFSIZ
];
1217 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1220 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1225 struct emacs_tty tty
;
1229 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1230 extern int (*interrupt_signal
) ();
1234 Vtty_erase_char
= Qnil
;
1241 input_ef
= get_kbd_event_flag ();
1242 /* LIB$GET_EF (&input_ef); */
1243 SYS$
CLREF (input_ef
);
1244 waiting_for_ast
= 0;
1246 timer_ef
= get_timer_event_flag ();
1247 /* LIB$GET_EF (&timer_ef); */
1248 SYS$
CLREF (timer_ef
);
1252 LIB$
GET_EF (&process_ef
);
1253 SYS$
CLREF (process_ef
);
1255 if (input_ef
/ 32 != process_ef
/ 32)
1256 croak ("Input and process event flags in different clusters.");
1258 if (input_ef
/ 32 != timer_ef
/ 32)
1259 croak ("Input and timer event flags in different clusters.");
1261 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1262 ((unsigned) 1 << (process_ef
% 32));
1264 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1265 ((unsigned) 1 << (timer_ef
% 32));
1267 sys_access_reinit ();
1269 #endif /* not VMS */
1272 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1273 narrow_foreground_group ();
1276 #ifdef HAVE_WINDOW_SYSTEM
1277 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1278 needs the initialization code below. */
1279 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1282 EMACS_GET_TTY (input_fd
, &old_tty
);
1288 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1289 XSETINT (Vtty_erase_char
, old_tty
.main
.c_cc
[VERASE
]);
1292 /* This allows meta to be sent on 8th bit. */
1293 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1295 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1296 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1297 #ifdef INLCR /* I'm just being cautious,
1298 since I can't check how widespread INLCR is--rms. */
1299 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1302 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1304 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1305 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1307 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1309 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1312 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1314 tty
.main
.c_iflag
&= ~IXANY
;
1318 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1319 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1321 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1325 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1326 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1329 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1330 /* Set up C-g for both SIGQUIT and SIGINT.
1331 We don't know which we will get, but we handle both alike
1332 so which one it really gives us does not matter. */
1333 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1334 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1335 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1337 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1340 #if defined (mips) || defined (HAVE_TCATTR)
1342 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1345 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1346 #endif /* V_DSUSP */
1347 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1348 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1351 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1354 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1355 #endif /* VREPRINT */
1357 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1358 #endif /* VWERASE */
1360 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1361 #endif /* VDISCARD */
1363 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1366 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1368 #endif /* mips or HAVE_TCATTR */
1369 #ifdef SET_LINE_DISCIPLINE
1370 /* Need to explicitly request TERMIODISC line discipline or
1371 Ultrix's termios does not work correctly. */
1372 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1376 /* AIX enhanced edit loses NULs, so disable it. */
1377 tty
.main
.c_line
= 0;
1378 tty
.main
.c_iflag
&= ~ASCEDIT
;
1380 tty
.main
.c_cc
[VSTRT
] = 255;
1381 tty
.main
.c_cc
[VSTOP
] = 255;
1382 tty
.main
.c_cc
[VSUSP
] = 255;
1383 tty
.main
.c_cc
[VDSUSP
] = 255;
1384 #endif /* IBMR2AIX */
1388 tty
.main
.c_cc
[VSTART
] = '\021';
1391 tty
.main
.c_cc
[VSTOP
] = '\023';
1394 /* Also, PTY overloads NUL and BREAK.
1395 don't ignore break, but don't signal either, so it looks like NUL.
1396 This really serves a purpose only if running in an XTERM window
1397 or via TELNET or the like, but does no harm elsewhere. */
1398 tty
.main
.c_iflag
&= ~IGNBRK
;
1399 tty
.main
.c_iflag
&= ~BRKINT
;
1401 #else /* if not HAVE_TERMIO */
1403 tty
.main
.tt_char
|= TT$M_NOECHO
;
1405 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1407 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1409 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1410 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1411 #else /* not VMS (BSD, that is) */
1413 Vtty_erase_char
= tty
.main
.sg_erase
;
1414 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1416 tty
.main
.sg_flags
|= ANYP
;
1417 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1418 #endif /* not DOS_NT */
1419 #endif /* not VMS (BSD, that is) */
1420 #endif /* not HAVE_TERMIO */
1422 /* If going to use CBREAK mode, we must request C-g to interrupt
1423 and turn off start and stop chars, etc. If not going to use
1424 CBREAK mode, do this anyway so as to turn off local flow
1425 control for user coming over network on 4.2; in this case,
1426 only t_stopc and t_startc really matter. */
1429 /* Note: if not using CBREAK mode, it makes no difference how we
1431 tty
.tchars
= new_tchars
;
1432 tty
.tchars
.t_intrc
= quit_char
;
1435 tty
.tchars
.t_startc
= '\021';
1436 tty
.tchars
.t_stopc
= '\023';
1439 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1441 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1442 anything, and leaving it in breaks the meta key. Go figure. */
1443 tty
.lmode
&= ~LLITOUT
;
1450 #endif /* HAVE_TCHARS */
1451 #endif /* not HAVE_TERMIO */
1454 tty
.ltchars
= new_ltchars
;
1455 #endif /* HAVE_LTCHARS */
1456 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1458 internal_terminal_init ();
1462 EMACS_SET_TTY (input_fd
, &tty
, 0);
1464 /* This code added to insure that, if flow-control is not to be used,
1465 we have an unlocked terminal at the start. */
1468 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1472 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1476 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1478 if (!flow_control
) tcflow (input_fd
, TCOON
);
1486 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1487 to be only LF. This is the way that is done. */
1490 if (ioctl (1, HFTGETID
, &tty
) != -1)
1491 write (1, "\033[20l", 5);
1497 /* Appears to do nothing when in PASTHRU mode.
1498 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1499 interrupt_signal, oob_chars, 0, 0, 0, 0);
1501 queue_kbd_input (0);
1506 #ifndef F_SETOWN_BUG
1507 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1509 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1511 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1512 fcntl (input_fd
, F_SETOWN
, getpid ());
1513 init_sigio (input_fd
);
1515 #endif /* F_GETOWN */
1516 #endif /* F_SETOWN_BUG */
1517 #endif /* F_SETFL */
1520 if (interrupt_input
)
1521 init_sigio (input_fd
);
1524 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1528 /* This symbol is defined on recent USG systems.
1529 Someone says without this call USG won't really buffer the file
1530 even with a call to setbuf. */
1531 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1533 setbuf (stdout
, _sobuf
);
1535 #ifdef HAVE_WINDOW_SYSTEM
1536 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1537 needs the initialization code below. */
1538 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1540 set_terminal_modes ();
1542 if (term_initted
&& no_redraw_on_reenter
)
1544 if (display_completed
)
1545 direct_output_forward_char (0);
1550 if (FRAMEP (Vterminal_frame
))
1551 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1557 /* Return nonzero if safe to use tabs in output.
1558 At the time this is called, init_sys_modes has not been done yet. */
1562 struct emacs_tty tty
;
1564 EMACS_GET_TTY (input_fd
, &tty
);
1565 return EMACS_TTY_TABS_OK (&tty
);
1568 /* Get terminal size from system.
1569 Store number of lines into *HEIGHTP and width into *WIDTHP.
1570 We store 0 if there's no valid information. */
1572 get_frame_size (widthp
, heightp
)
1573 int *widthp
, *heightp
;
1579 struct winsize size
;
1581 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1582 *widthp
= *heightp
= 0;
1585 *widthp
= size
.ws_col
;
1586 *heightp
= size
.ws_row
;
1592 /* SunOS - style. */
1593 struct ttysize size
;
1595 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1596 *widthp
= *heightp
= 0;
1599 *widthp
= size
.ts_cols
;
1600 *heightp
= size
.ts_lines
;
1606 struct sensemode tty
;
1608 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1609 &tty
.class, 12, 0, 0, 0, 0);
1610 *widthp
= tty
.scr_wid
;
1611 *heightp
= tty
.scr_len
;
1615 *widthp
= ScreenCols ();
1616 *heightp
= ScreenRows ();
1617 #else /* system doesn't know size */
1622 #endif /* not VMS */
1623 #endif /* not SunOS-style */
1624 #endif /* not BSD-style */
1627 /* Set the logical window size associated with descriptor FD
1628 to HEIGHT and WIDTH. This is used mainly with ptys. */
1631 set_window_size (fd
, height
, width
)
1632 int fd
, height
, width
;
1637 struct winsize size
;
1638 size
.ws_row
= height
;
1639 size
.ws_col
= width
;
1641 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1642 return 0; /* error */
1649 /* SunOS - style. */
1650 struct ttysize size
;
1651 size
.ts_lines
= height
;
1652 size
.ts_cols
= width
;
1654 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1660 #endif /* not SunOS-style */
1661 #endif /* not BSD-style */
1665 /* Prepare the terminal for exiting Emacs; move the cursor to the
1666 bottom of the frame, turn off interrupt-driven I/O, etc. */
1676 #ifdef HAVE_WINDOW_SYSTEM
1677 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1678 needs the clean-up code below. */
1679 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1682 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1683 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1684 /* clear_end_of_line may move the cursor */
1685 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1686 #if defined (IBMR2AIX) && defined (AIXHFT)
1688 /* HFT devices normally use ^J as a LF/CR. We forced it to
1689 do the LF only. Now, we need to reset it. */
1692 if (ioctl (1, HFTGETID
, &tty
) != -1)
1693 write (1, "\033[20h", 5);
1697 reset_terminal_modes ();
1701 /* Avoid possible loss of output when changing terminal modes. */
1702 fsync (fileno (stdout
));
1707 #ifndef F_SETOWN_BUG
1708 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1709 if (interrupt_input
)
1712 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1714 #endif /* F_SETOWN */
1715 #endif /* F_SETOWN_BUG */
1717 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1719 #endif /* F_SETFL */
1721 if (interrupt_input
)
1726 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1729 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1733 #ifdef SET_LINE_DISCIPLINE
1734 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1735 A different old line discipline is therefore not restored, yet.
1736 Restore the old line discipline by hand. */
1737 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1745 widen_foreground_group ();
1751 /* Set up the proper status flags for use of a pty. */
1756 /* I'm told that TOICREMOTE does not mean control chars
1757 "can't be sent" but rather that they don't have
1758 input-editing or signaling effects.
1759 That should be good, because we have other ways
1760 to do those things in Emacs.
1761 However, telnet mode seems not to work on 4.2.
1762 So TIOCREMOTE is turned off now. */
1764 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1765 will hang. In particular, the "timeout" feature (which
1766 causes a read to return if there is no data available)
1767 does this. Also it is known that telnet mode will hang
1768 in such a way that Emacs must be stopped (perhaps this
1769 is the same problem).
1771 If TIOCREMOTE is turned off, then there is a bug in
1772 hp-ux which sometimes loses data. Apparently the
1773 code which blocks the master process when the internal
1774 buffer fills up does not work. Other than this,
1775 though, everything else seems to work fine.
1777 Since the latter lossage is more benign, we may as well
1778 lose that way. -- cph */
1783 ioctl (fd
, FIONBIO
, &on
);
1788 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1789 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1790 /* cause EMACS not to die when it should, i.e., when its own controlling */
1791 /* tty goes away. I've complained to the AIX developers, and they may */
1792 /* change this behavior, but I'm not going to hold my breath. */
1793 signal (SIGHUP
, SIG_IGN
);
1796 #endif /* HAVE_PTYS */
1800 /* Assigning an input channel is done at the start of Emacs execution.
1801 This is called each time Emacs is resumed, also, but does nothing
1802 because input_chain is no longer zero. */
1810 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1816 /* Deassigning the input channel is done before exiting. */
1820 return SYS$
DASSGN (input_fd
);
1825 /* Request reading one character into the keyboard buffer.
1826 This is done as soon as the buffer becomes empty. */
1831 extern kbd_input_ast ();
1833 waiting_for_ast
= 0;
1835 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1836 &input_iosb
, kbd_input_ast
, 1,
1837 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1842 /* Ast routine that is called when keyboard input comes in
1843 in accord with the SYS$QIO above. */
1847 register int c
= -1;
1848 int old_errno
= errno
;
1849 extern EMACS_TIME
*input_available_clear_time
;
1851 if (waiting_for_ast
)
1852 SYS$
SETEF (input_ef
);
1853 waiting_for_ast
= 0;
1856 if (input_count
== 25)
1858 printf ("Ast # %d,", input_count
);
1859 printf (" iosb = %x, %x, %x, %x",
1860 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1863 if (input_iosb
.offset
)
1867 printf (", char = 0%o", c
);
1879 struct input_event e
;
1880 e
.kind
= ascii_keystroke
;
1881 XSETINT (e
.code
, c
);
1882 XSETFRAME (e
.frame_or_window
, selected_frame
);
1883 kbd_buffer_store_event (&e
);
1885 if (input_available_clear_time
)
1886 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1890 /* Wait until there is something in kbd_buffer. */
1892 wait_for_kbd_input ()
1894 extern int have_process_input
, process_exited
;
1896 /* If already something, avoid doing system calls. */
1897 if (detect_input_pending ())
1901 /* Clear a flag, and tell ast routine above to set it. */
1902 SYS$
CLREF (input_ef
);
1903 waiting_for_ast
= 1;
1904 /* Check for timing error: ast happened while we were doing that. */
1905 if (!detect_input_pending ())
1907 /* No timing error: wait for flag to be set. */
1908 set_waiting_for_input (0);
1909 SYS$
WFLOR (input_ef
, input_eflist
);
1910 clear_waiting_for_input (0);
1911 if (!detect_input_pending ())
1912 /* Check for subprocess input availability */
1914 int dsp
= have_process_input
|| process_exited
;
1916 SYS$
CLREF (process_ef
);
1917 if (have_process_input
)
1918 process_command_input ();
1923 update_mode_lines
++;
1924 prepare_menu_bars ();
1925 redisplay_preserve_echo_area ();
1929 waiting_for_ast
= 0;
1932 /* Get rid of any pending QIO, when we are about to suspend
1933 or when we want to throw away pending input.
1934 We wait for a positive sign that the AST routine has run
1935 and therefore there is no I/O request queued when we return.
1936 SYS$SETAST is used to avoid a timing error. */
1941 printf ("At end_kbd_input.\n");
1945 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1947 SYS$
CANCEL (input_fd
);
1952 /* Clear a flag, and tell ast routine above to set it. */
1953 SYS$
CLREF (input_ef
);
1954 waiting_for_ast
= 1;
1956 SYS$
CANCEL (input_fd
);
1958 SYS$
WAITFR (input_ef
);
1959 waiting_for_ast
= 0;
1962 /* Wait for either input available or time interval expiry. */
1964 input_wait_timeout (timeval
)
1965 int timeval
; /* Time to wait, in seconds */
1968 static int zero
= 0;
1969 static int large
= -10000000;
1971 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1973 /* If already something, avoid doing system calls. */
1974 if (detect_input_pending ())
1978 /* Clear a flag, and tell ast routine above to set it. */
1979 SYS$
CLREF (input_ef
);
1980 waiting_for_ast
= 1;
1981 /* Check for timing error: ast happened while we were doing that. */
1982 if (!detect_input_pending ())
1984 /* No timing error: wait for flag to be set. */
1986 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1987 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1989 waiting_for_ast
= 0;
1992 /* The standard `sleep' routine works some other way
1993 and it stops working if you have ever quit out of it.
1994 This one continues to work. */
2000 static int zero
= 0;
2001 static int large
= -10000000;
2003 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2006 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2007 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2023 croak ("request sigio");
2028 croak ("unrequest sigio");
2033 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2038 #ifndef SYSTEM_MALLOC
2045 /* Some systems that cannot dump also cannot implement these. */
2048 * Return the address of the start of the text segment prior to
2049 * doing an unexec. After unexec the return value is undefined.
2050 * See crt0.c for further explanation and _start.
2054 #ifndef HAVE_TEXT_START
2059 return ((char *) TEXT_START
);
2063 return ((char *) csrt
);
2064 #else /* not GOULD */
2065 extern int _start ();
2066 return ((char *) _start
);
2068 #endif /* TEXT_START */
2070 #endif /* not HAVE_TEXT_START */
2073 * Return the address of the start of the data segment prior to
2074 * doing an unexec. After unexec the return value is undefined.
2075 * See crt0.c for further information and definition of data_start.
2077 * Apparently, on BSD systems this is etext at startup. On
2078 * USG systems (swapping) this is highly mmu dependent and
2079 * is also dependent on whether or not the program is running
2080 * with shared text. Generally there is a (possibly large)
2081 * gap between end of text and start of data with shared text.
2083 * On Uniplus+ systems with shared text, data starts at a
2084 * fixed address. Each port (from a given oem) is generally
2085 * different, and the specific value of the start of data can
2086 * be obtained via the UniPlus+ specific "uvar" system call,
2087 * however the method outlined in crt0.c seems to be more portable.
2089 * Probably what will have to happen when a USG unexec is available,
2090 * at least on UniPlus, is temacs will have to be made unshared so
2091 * that text and data are contiguous. Then once loadup is complete,
2092 * unexec will produce a shared executable where the data can be
2093 * at the normal shared text boundary and the startofdata variable
2094 * will be patched by unexec to the correct value.
2102 return ((char *) DATA_START
);
2104 #ifdef ORDINARY_LINK
2106 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2107 * data_start isn't defined. We take the address of environ, which
2108 * is known to live at or near the start of the system crt0.c, and
2109 * we don't sweat the handful of bytes that might lose.
2111 extern char **environ
;
2113 return((char *) &environ
);
2115 extern int data_start
;
2116 return ((char *) &data_start
);
2117 #endif /* ORDINARY_LINK */
2118 #endif /* DATA_START */
2120 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2123 /* Some systems that cannot dump also cannot implement these. */
2126 * Return the address of the end of the text segment prior to
2127 * doing an unexec. After unexec the return value is undefined.
2134 return ((char *) TEXT_END
);
2137 return ((char *) &etext
);
2142 * Return the address of the end of the data segment prior to
2143 * doing an unexec. After unexec the return value is undefined.
2150 return ((char *) DATA_END
);
2153 return ((char *) &edata
);
2157 #endif /* not CANNOT_DUMP */
2159 /* init_system_name sets up the string for the Lisp function
2160 system-name to return. */
2166 extern Lisp_Object Vsystem_name
;
2171 #include <sys/socket.h>
2173 #endif /* HAVE_SOCKETS */
2174 #endif /* not VMS */
2175 #endif /* not BSD4_1 */
2181 Vsystem_name
= build_string (sysname
);
2185 if ((sp
= egetenv ("SYS$NODE")) == 0)
2186 Vsystem_name
= build_string ("vax-vms");
2187 else if ((end
= index (sp
, ':')) == 0)
2188 Vsystem_name
= build_string (sp
);
2190 Vsystem_name
= make_string (sp
, end
- sp
);
2192 #ifndef HAVE_GETHOSTNAME
2195 Vsystem_name
= build_string (uts
.nodename
);
2196 #else /* HAVE_GETHOSTNAME */
2197 unsigned int hostname_size
= 256;
2198 char *hostname
= (char *) alloca (hostname_size
);
2200 /* Try to get the host name; if the buffer is too short, try
2201 again. Apparently, the only indication gethostname gives of
2202 whether the buffer was large enough is the presence or absence
2203 of a '\0' in the string. Eech. */
2206 gethostname (hostname
, hostname_size
- 1);
2207 hostname
[hostname_size
- 1] = '\0';
2209 /* Was the buffer large enough for the '\0'? */
2210 if (strlen (hostname
) < hostname_size
- 1)
2213 hostname_size
<<= 1;
2214 hostname
= (char *) alloca (hostname_size
);
2217 /* Turn the hostname into the official, fully-qualified hostname.
2218 Don't do this if we're going to dump; this can confuse system
2219 libraries on some machines and make the dumped emacs core dump. */
2222 #endif /* not CANNOT_DUMP */
2226 for (count
= 0;; count
++)
2231 hp
= gethostbyname (hostname
);
2233 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2238 Fsleep_for (make_number (1), Qnil
);
2242 char *fqdn
= (char *) hp
->h_name
;
2245 if (!index (fqdn
, '.'))
2247 /* We still don't have a fully qualified domain name.
2248 Try to find one in the list of alternate names */
2249 char **alias
= hp
->h_aliases
;
2250 while (*alias
&& !index (*alias
, '.'))
2257 /* Convert the host name to lower case. */
2258 /* Using ctype.h here would introduce a possible locale
2259 dependence that is probably wrong for hostnames. */
2263 if (*p
>= 'A' && *p
<= 'Z')
2270 #endif /* HAVE_SOCKETS */
2271 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) || HAVE_GETDOMAINNAME
2272 if (! index (hostname
, '.'))
2274 /* The hostname is not fully qualified. Append the domain name. */
2276 int hostlen
= strlen (hostname
);
2277 int domain_size
= 256;
2281 char *domain
= (char *) alloca (domain_size
+ 1);
2282 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2283 #if HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)
2284 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2285 if (sys_domain_size
<= 0)
2287 if (domain_size
< sys_domain_size
)
2289 domain_size
= sys_domain_size
;
2292 #else /* HAVE_GETDOMAINNAME */
2293 if (getdomainname (domain
, domain_size
- 1) != 0 || ! *domain
)
2295 domain
[domain_size
- 1] = '\0';
2296 if (strlen (domain
) == domain_size
- 1)
2301 /* If we get an answer which means "domain unknown",
2302 don't use a domain. */
2303 if (!strcmp (domain
, "(none)"))
2308 #endif /* HAVE_GETDOMAINNAME */
2309 strcpy (fqdn
, hostname
);
2310 if (domain
[0] == '.')
2311 strcpy (fqdn
+ hostlen
, domain
);
2314 fqdn
[hostlen
] = '.';
2315 strcpy (fqdn
+ hostlen
+ 1, domain
);
2321 #endif /*! ((HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) || HAVE_GETDOMAINNAME)*/
2322 Vsystem_name
= build_string (hostname
);
2323 #endif /* HAVE_GETHOSTNAME */
2328 for (p
= XSTRING (Vsystem_name
)->data
; *p
; p
++)
2329 if (*p
== ' ' || *p
== '\t')
2336 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2338 #include "sysselect.h"
2341 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2342 /* Cause explanatory error message at compile time,
2343 since the select emulation is not good enough for X. */
2344 int *x
= &x_windows_lose_if_no_select_system_call
;
2347 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2348 * Only checks read descriptors.
2350 /* How long to wait between checking fds in select */
2351 #define SELECT_PAUSE 1
2354 /* For longjmp'ing back to read_input_waiting. */
2356 jmp_buf read_alarm_throw
;
2358 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2359 The read_socket_hook function sets this to 1 while it is waiting. */
2361 int read_alarm_should_throw
;
2369 #else /* not BSD4_1 */
2370 signal (SIGALRM
, SIG_IGN
);
2371 #endif /* not BSD4_1 */
2372 if (read_alarm_should_throw
)
2373 longjmp (read_alarm_throw
, 1);
2377 /* Only rfds are checked. */
2379 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2381 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2382 EMACS_TIME
*timeout
;
2384 int ravail
= 0, old_alarm
;
2388 extern int proc_buffered_char
[];
2389 #ifndef subprocesses
2390 int process_tick
= 0, update_tick
= 0;
2392 extern int process_tick
, update_tick
;
2394 SIGTYPE (*old_trap
) ();
2397 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2398 /* If we're using X, then the native select will work; we only need the
2399 emulation for non-X usage. */
2400 if (!NILP (Vwindow_system
))
2401 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2403 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2404 local_timeout
= &timeoutval
;
2416 /* If we are looking only for the terminal, with no timeout,
2417 just read it and wait -- that's more efficient. */
2418 if (*local_timeout
== 100000 && process_tick
== update_tick
2419 && FD_ISSET (0, &orfds
))
2422 for (fd
= 1; fd
< nfds
; ++fd
)
2423 if (FD_ISSET (fd
, &orfds
))
2425 if (! detect_input_pending ())
2426 read_input_waiting ();
2432 /* Once a second, till the timer expires, check all the flagged read
2433 * descriptors to see if any input is available. If there is some then
2434 * set the corresponding bit in the return copy of rfds.
2438 register int to_check
, fd
;
2442 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2444 if (FD_ISSET (fd
, &orfds
))
2446 int avail
= 0, status
= 0;
2449 avail
= detect_input_pending (); /* Special keyboard handler */
2453 status
= ioctl (fd
, FIONREAD
, &avail
);
2454 #else /* no FIONREAD */
2455 /* Hoping it will return -1 if nothing available
2456 or 0 if all 0 chars requested are read. */
2457 if (proc_buffered_char
[fd
] >= 0)
2461 avail
= read (fd
, &buf
, 1);
2463 proc_buffered_char
[fd
] = buf
;
2465 #endif /* no FIONREAD */
2467 if (status
>= 0 && avail
> 0)
2475 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2477 old_alarm
= alarm (0);
2478 old_trap
= signal (SIGALRM
, select_alarm
);
2480 alarm (SELECT_PAUSE
);
2481 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2482 while (select_alarmed
== 0 && *local_timeout
!= 0
2483 && process_tick
== update_tick
)
2485 /* If we are interested in terminal input,
2486 wait by reading the terminal.
2487 That makes instant wakeup for terminal input at least. */
2488 if (FD_ISSET (0, &orfds
))
2490 read_input_waiting ();
2491 if (detect_input_pending ())
2497 (*local_timeout
) -= SELECT_PAUSE
;
2498 /* Reset the old alarm if there was one */
2500 signal (SIGALRM
, old_trap
);
2503 /* Reset or forge an interrupt for the original handler. */
2504 old_alarm
-= SELECT_PAUSE
;
2506 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2510 if (*local_timeout
== 0) /* Stop on timer being cleared */
2515 #endif /* not WINDOWSNT */
2517 /* Read keyboard input into the standard buffer,
2518 waiting for at least one character. */
2520 /* Make all keyboard buffers much bigger when using a window system. */
2521 #ifdef HAVE_WINDOW_SYSTEM
2522 #define BUFFER_SIZE_FACTOR 16
2524 #define BUFFER_SIZE_FACTOR 1
2527 read_input_waiting ()
2529 struct input_event e
;
2531 extern int quit_char
;
2533 if (read_socket_hook
)
2535 struct input_event buf
[256];
2537 read_alarm_should_throw
= 0;
2538 if (! setjmp (read_alarm_throw
))
2539 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2543 /* Scan the chars for C-g and store them in kbd_buffer. */
2544 for (i
= 0; i
< nread
; i
++)
2546 kbd_buffer_store_event (&buf
[i
]);
2547 /* Don't look at input that follows a C-g too closely.
2548 This reduces lossage due to autorepeat on C-g. */
2549 if (buf
[i
].kind
== ascii_keystroke
2550 && buf
[i
].code
== quit_char
)
2557 nread
= read (fileno (stdin
), buf
, 1);
2559 /* Scan the chars for C-g and store them in kbd_buffer. */
2560 e
.kind
= ascii_keystroke
;
2561 XSETFRAME (e
.frame_or_window
, selected_frame
);
2563 for (i
= 0; i
< nread
; i
++)
2565 /* Convert chars > 0177 to meta events if desired.
2566 We do this under the same conditions that read_avail_input does. */
2567 if (read_socket_hook
== 0)
2569 /* If the user says she has a meta key, then believe her. */
2570 if (meta_key
== 1 && (buf
[i
] & 0x80))
2571 e
.modifiers
= meta_modifier
;
2576 XSETINT (e
.code
, buf
[i
]);
2577 kbd_buffer_store_event (&e
);
2578 /* Don't look at input that follows a C-g too closely.
2579 This reduces lossage due to autorepeat on C-g. */
2580 if (buf
[i
] == quit_char
)
2586 #endif /* not HAVE_SELECT */
2587 #endif /* not VMS */
2588 #endif /* not MSDOS */
2592 * Partially emulate 4.2 open call.
2593 * open is defined as this in 4.1.
2595 * - added by Michael Bloom @ Citicorp/TTI
2600 sys_open (path
, oflag
, mode
)
2604 if (oflag
& O_CREAT
)
2605 return creat (path
, mode
);
2607 return open (path
, oflag
);
2615 lmode
= LINTRUP
| lmode
;
2616 ioctl (fd
, TIOCLSET
, &lmode
);
2623 lmode
= ~LINTRUP
& lmode
;
2624 ioctl (0, TIOCLSET
, &lmode
);
2631 interrupts_deferred
= 0;
2638 interrupts_deferred
= 1;
2641 /* still inside #ifdef BSD4_1 */
2644 int sigheld
; /* Mask of held signals */
2649 sigheld
|= sigbit (signum
);
2656 sigheld
|= sigbit (signum
);
2662 sigheld
&= ~sigbit (signum
);
2666 sigfree () /* Free all held signals */
2669 for (i
= 0; i
< NSIG
; i
++)
2670 if (sigheld
& sigbit (i
))
2677 return 1 << (i
- 1);
2679 #endif /* subprocesses */
2682 /* POSIX signals support - DJB */
2683 /* Anyone with POSIX signals should have ANSI C declarations */
2685 #ifdef POSIX_SIGNALS
2687 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2688 static struct sigaction new_action
, old_action
;
2692 sigemptyset (&empty_mask
);
2693 sigfillset (&full_mask
);
2697 sys_signal (int signal_number
, signal_handler_t action
)
2699 sigemptyset (&new_action
.sa_mask
);
2700 new_action
.sa_handler
= action
;
2702 /* Emacs mostly works better with restartable system services. If this
2703 * flag exists, we probably want to turn it on here.
2705 new_action
.sa_flags
= SA_RESTART
;
2707 new_action
.sa_flags
= 0;
2709 sigaction (signal_number
, &new_action
, &old_action
);
2710 return (old_action
.sa_handler
);
2714 /* If we're compiling with GCC, we don't need this function, since it
2715 can be written as a macro. */
2717 sys_sigmask (int sig
)
2720 sigemptyset (&mask
);
2721 sigaddset (&mask
, sig
);
2727 sys_sigpause (sigset_t new_mask
)
2729 /* pause emulating berk sigpause... */
2730 sigsuspend (&new_mask
);
2734 /* I'd like to have these guys return pointers to the mask storage in here,
2735 but there'd be trouble if the code was saving multiple masks. I'll be
2736 safe and pass the structure. It normally won't be more than 2 bytes
2740 sys_sigblock (sigset_t new_mask
)
2743 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2748 sys_sigunblock (sigset_t new_mask
)
2751 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2756 sys_sigsetmask (sigset_t new_mask
)
2759 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2763 #endif /* POSIX_SIGNALS */
2771 /* Figure out how many bits the system's random number generator uses.
2772 `random' and `lrand48' are assumed to return 31 usable bits.
2773 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2774 so we'll shift it and treat it like the 15-bit USG `rand'. */
2778 # define RAND_BITS 31
2779 # else /* !HAVE_RANDOM */
2780 # ifdef HAVE_LRAND48
2781 # define RAND_BITS 31
2782 # define random lrand48
2783 # else /* !HAVE_LRAND48 */
2784 # define RAND_BITS 15
2785 # if RAND_MAX == 32767
2786 # define random rand
2787 # else /* RAND_MAX != 32767 */
2788 # if RAND_MAX == 2147483647
2789 # define random() (rand () >> 16)
2790 # else /* RAND_MAX != 2147483647 */
2792 # define random rand
2794 # define random() (rand () >> 16)
2796 # endif /* RAND_MAX != 2147483647 */
2797 # endif /* RAND_MAX != 32767 */
2798 # endif /* !HAVE_LRAND48 */
2799 # endif /* !HAVE_RANDOM */
2800 #endif /* !RAND_BITS */
2807 srandom ((unsigned int)arg
);
2809 # ifdef HAVE_LRAND48
2812 srand ((unsigned int)arg
);
2818 * Build a full Emacs-sized word out of whatever we've got.
2819 * This suffices even for a 64-bit architecture with a 15-bit rand.
2824 long val
= random ();
2825 #if VALBITS > RAND_BITS
2826 val
= (val
<< RAND_BITS
) ^ random ();
2827 #if VALBITS > 2*RAND_BITS
2828 val
= (val
<< RAND_BITS
) ^ random ();
2829 #if VALBITS > 3*RAND_BITS
2830 val
= (val
<< RAND_BITS
) ^ random ();
2831 #if VALBITS > 4*RAND_BITS
2832 val
= (val
<< RAND_BITS
) ^ random ();
2833 #endif /* need at least 5 */
2834 #endif /* need at least 4 */
2835 #endif /* need at least 3 */
2836 #endif /* need at least 2 */
2837 return val
& ((1L << VALBITS
) - 1);
2840 #ifdef WRONG_NAME_INSQUE
2853 /* If any place else asks for the TERM variable,
2854 allow it to be overridden with the EMACS_TERM variable
2855 before attempting to translate the logical name TERM. As a last
2856 resort, ask for VAX C's special idea of the TERM variable. */
2863 static char buf
[256];
2864 static struct dsc$descriptor_s equiv
2865 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2866 static struct dsc$descriptor_s d_name
2867 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2870 if (!strcmp (name
, "TERM"))
2872 val
= (char *) getenv ("EMACS_TERM");
2877 d_name
.dsc$w_length
= strlen (name
);
2878 d_name
.dsc$a_pointer
= name
;
2879 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2881 char *str
= (char *) xmalloc (eqlen
+ 1);
2882 bcopy (buf
, str
, eqlen
);
2884 /* This is a storage leak, but a pain to fix. With luck,
2885 no one will ever notice. */
2888 return (char *) getenv (name
);
2893 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2894 to force a call on the debugger from within the image. */
2899 LIB$
SIGNAL (SS$_DEBUG
);
2905 #ifdef LINK_CRTL_SHARE
2906 #ifdef SHARABLE_LIB_BUG
2907 /* Variables declared noshare and initialized in sharable libraries
2908 cannot be shared. The VMS linker incorrectly forces you to use a private
2909 version which is uninitialized... If not for this "feature", we
2910 could use the C library definition of sys_nerr and sys_errlist. */
2912 char *sys_errlist
[] =
2916 "no such file or directory",
2918 "interrupted system call",
2920 "no such device or address",
2921 "argument list too long",
2922 "exec format error",
2925 "no more processes",
2926 "not enough memory",
2927 "permission denied",
2929 "block device required",
2930 "mount devices busy",
2932 "cross-device link",
2937 "file table overflow",
2938 "too many open files",
2942 "no space left on device",
2944 "read-only file system",
2950 "vax/vms specific error code nontranslatable error"
2952 #endif /* SHARABLE_LIB_BUG */
2953 #endif /* LINK_CRTL_SHARE */
2956 #ifndef HAVE_STRERROR
2962 extern char *sys_errlist
[];
2963 extern int sys_nerr
;
2965 if (errnum
>= 0 && errnum
< sys_nerr
)
2966 return sys_errlist
[errnum
];
2967 return (char *) "Unknown error";
2969 #endif /* not WINDOWSNT */
2970 #endif /* ! HAVE_STRERROR */
2972 #ifdef INTERRUPTIBLE_OPEN
2976 sys_open (path
, oflag
, mode
)
2980 register int rtnval
;
2982 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2983 && (errno
== EINTR
));
2987 #endif /* INTERRUPTIBLE_OPEN */
2989 #ifdef INTERRUPTIBLE_CLOSE
2995 register int rtnval
;
2997 while ((rtnval
= close (fd
)) == -1
2998 && (errno
== EINTR
))
3001 /* If close is interrupted SunOS 4.1 may or may not have closed the
3002 file descriptor. If it did the second close will fail with
3003 errno = EBADF. That means we have succeeded. */
3004 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3010 #endif /* INTERRUPTIBLE_CLOSE */
3012 #ifdef INTERRUPTIBLE_IO
3015 sys_read (fildes
, buf
, nbyte
)
3020 register int rtnval
;
3022 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3023 && (errno
== EINTR
));
3028 sys_write (fildes
, buf
, nbyte
)
3033 register int rtnval
, bytes_written
;
3039 rtnval
= write (fildes
, buf
, nbyte
);
3046 return (bytes_written
? bytes_written
: -1);
3051 bytes_written
+= rtnval
;
3053 return (bytes_written
);
3056 #endif /* INTERRUPTIBLE_IO */
3061 * Substitute fork for vfork on USG flavors.
3069 #endif /* not WINDOWSNT */
3070 #endif /* not HAVE_VFORK */
3074 * All of the following are for USG.
3076 * On USG systems the system calls are INTERRUPTIBLE by signals
3077 * that the user program has elected to catch. Thus the system call
3078 * must be retried in these cases. To handle this without massive
3079 * changes in the source code, we remap the standard system call names
3080 * to names for our own functions in sysdep.c that do the system call
3081 * with retries. Actually, for portability reasons, it is good
3082 * programming practice, as this example shows, to limit all actual
3083 * system calls to a single occurrence in the source. Sure, this
3084 * adds an extra level of function call overhead but it is almost
3085 * always negligible. Fred Fish, Unisoft Systems Inc.
3088 #ifndef HAVE_SYS_SIGLIST
3089 char *sys_siglist
[NSIG
+ 1] =
3092 /* AIX has changed the signals a bit */
3093 "bogus signal", /* 0 */
3094 "hangup", /* 1 SIGHUP */
3095 "interrupt", /* 2 SIGINT */
3096 "quit", /* 3 SIGQUIT */
3097 "illegal instruction", /* 4 SIGILL */
3098 "trace trap", /* 5 SIGTRAP */
3099 "IOT instruction", /* 6 SIGIOT */
3100 "crash likely", /* 7 SIGDANGER */
3101 "floating point exception", /* 8 SIGFPE */
3102 "kill", /* 9 SIGKILL */
3103 "bus error", /* 10 SIGBUS */
3104 "segmentation violation", /* 11 SIGSEGV */
3105 "bad argument to system call", /* 12 SIGSYS */
3106 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3107 "alarm clock", /* 14 SIGALRM */
3108 "software termination signum", /* 15 SIGTERM */
3109 "user defined signal 1", /* 16 SIGUSR1 */
3110 "user defined signal 2", /* 17 SIGUSR2 */
3111 "death of a child", /* 18 SIGCLD */
3112 "power-fail restart", /* 19 SIGPWR */
3113 "bogus signal", /* 20 */
3114 "bogus signal", /* 21 */
3115 "bogus signal", /* 22 */
3116 "bogus signal", /* 23 */
3117 "bogus signal", /* 24 */
3118 "LAN I/O interrupt", /* 25 SIGAIO */
3119 "PTY I/O interrupt", /* 26 SIGPTY */
3120 "I/O intervention required", /* 27 SIGIOINT */
3122 "HFT grant", /* 28 SIGGRANT */
3123 "HFT retract", /* 29 SIGRETRACT */
3124 "HFT sound done", /* 30 SIGSOUND */
3125 "HFT input ready", /* 31 SIGMSG */
3128 "bogus signal", /* 0 */
3129 "hangup", /* 1 SIGHUP */
3130 "interrupt", /* 2 SIGINT */
3131 "quit", /* 3 SIGQUIT */
3132 "illegal instruction", /* 4 SIGILL */
3133 "trace trap", /* 5 SIGTRAP */
3134 "IOT instruction", /* 6 SIGIOT */
3135 "EMT instruction", /* 7 SIGEMT */
3136 "floating point exception", /* 8 SIGFPE */
3137 "kill", /* 9 SIGKILL */
3138 "bus error", /* 10 SIGBUS */
3139 "segmentation violation", /* 11 SIGSEGV */
3140 "bad argument to system call", /* 12 SIGSYS */
3141 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3142 "alarm clock", /* 14 SIGALRM */
3143 "software termination signum", /* 15 SIGTERM */
3144 "user defined signal 1", /* 16 SIGUSR1 */
3145 "user defined signal 2", /* 17 SIGUSR2 */
3146 "death of a child", /* 18 SIGCLD */
3147 "power-fail restart", /* 19 SIGPWR */
3149 "window size change", /* 20 SIGWINCH */
3150 "urgent socket condition", /* 21 SIGURG */
3151 "pollable event occurred", /* 22 SIGPOLL */
3152 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
3153 "user stop requested from tty", /* 24 SIGTSTP */
3154 "stopped process has been continued", /* 25 SIGCONT */
3155 "background tty read attempted", /* 26 SIGTTIN */
3156 "background tty write attempted", /* 27 SIGTTOU */
3157 "virtual timer expired", /* 28 SIGVTALRM */
3158 "profiling timer expired", /* 29 SIGPROF */
3159 "exceeded cpu limit", /* 30 SIGXCPU */
3160 "exceeded file size limit", /* 31 SIGXFSZ */
3161 "process's lwps are blocked", /* 32 SIGWAITING */
3162 "special signal used by thread library", /* 33 SIGLWP */
3164 "Special Signal Used By CPR", /* 34 SIGFREEZE */
3167 "Special Signal Used By CPR", /* 35 SIGTHAW */
3170 #endif /* not AIX */
3173 #endif /* HAVE_SYS_SIGLIST */
3176 * Warning, this function may not duplicate 4.2 action properly
3177 * under error conditions.
3181 /* In 4.1, param.h fails to define this. */
3182 #define MAXPATHLEN 1024
3191 char *npath
, *spath
;
3192 extern char *getcwd ();
3194 BLOCK_INPUT
; /* getcwd uses malloc */
3195 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3198 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3199 up to first slash. Should be harmless on other systems. */
3200 while (*npath
&& *npath
!= '/')
3202 strcpy (pathname
, npath
);
3203 free (spath
); /* getcwd uses malloc */
3208 #endif /* HAVE_GETWD */
3211 * Emulate rename using unlink/link. Note that this is
3212 * only partially correct. Also, doesn't enforce restriction
3213 * that files be of same type (regular->regular, dir->dir, etc).
3222 if (access (from
, 0) == 0)
3225 if (link (from
, to
) == 0)
3226 if (unlink (from
) == 0)
3238 /* HPUX curses library references perror, but as far as we know
3239 it won't be called. Anyway this definition will do for now. */
3245 #endif /* not HAVE_PERROR */
3251 * Emulate BSD dup2. First close newd if it already exists.
3252 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3253 * until we are, then close the unsuccessful ones.
3260 register int fd
, ret
;
3265 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3267 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3274 ret
= dup2 (old
,new);
3280 #endif /* not HAVE_DUP2 */
3283 * Gettimeofday. Simulate as much as possible. Only accurate
3284 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3285 * Only needed when subprocesses are defined.
3290 #ifndef HAVE_GETTIMEOFDAY
3294 gettimeofday (tp
, tzp
)
3296 struct timezone
*tzp
;
3298 extern long time ();
3300 tp
->tv_sec
= time ((long *)0);
3303 tzp
->tz_minuteswest
= -1;
3309 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3312 * This function will go away as soon as all the stubs fixed. (fnf)
3318 printf ("%s not yet implemented\r\n", badfunc
);
3327 char *sys_siglist
[NSIG
+ 1] =
3329 "null signal", /* 0 SIGNULL */
3330 "hangup", /* 1 SIGHUP */
3331 "interrupt", /* 2 SIGINT */
3332 "quit", /* 3 SIGQUIT */
3333 "illegal instruction", /* 4 SIGILL */
3334 "trace trap", /* 5 SIGTRAP */
3335 "abort termination", /* 6 SIGABRT */
3336 "SIGEMT", /* 7 SIGEMT */
3337 "floating point exception", /* 8 SIGFPE */
3338 "kill", /* 9 SIGKILL */
3339 "bus error", /* 10 SIGBUS */
3340 "segmentation violation", /* 11 SIGSEGV */
3341 "bad argument to system call", /* 12 SIGSYS */
3342 "write on a pipe with no reader", /* 13 SIGPIPE */
3343 "alarm clock", /* 14 SIGALRM */
3344 "software termination signal", /* 15 SIGTERM */
3345 "user defined signal 1", /* 16 SIGUSR1 */
3346 "user defined signal 2", /* 17 SIGUSR2 */
3347 "child stopped or terminated", /* 18 SIGCLD */
3348 "power-fail restart", /* 19 SIGPWR */
3349 "window size changed", /* 20 SIGWINCH */
3350 "undefined", /* 21 */
3351 "pollable event occurred", /* 22 SIGPOLL */
3352 "sendable stop signal not from tty", /* 23 SIGSTOP */
3353 "stop signal from tty", /* 24 SIGSTP */
3354 "continue a stopped process", /* 25 SIGCONT */
3355 "attempted background tty read", /* 26 SIGTTIN */
3356 "attempted background tty write", /* 27 SIGTTOU */
3357 "undefined", /* 28 */
3358 "undefined", /* 29 */
3359 "undefined", /* 30 */
3360 "undefined", /* 31 */
3361 "undefined", /* 32 */
3362 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3363 "I/O is possible", /* 34 SIGIO */
3364 "exceeded cpu time limit", /* 35 SIGXCPU */
3365 "exceeded file size limit", /* 36 SIGXFSZ */
3366 "virtual time alarm", /* 37 SIGVTALRM */
3367 "profiling time alarm", /* 38 SIGPROF */
3368 "undefined", /* 39 */
3369 "file record locks revoked", /* 40 SIGLOST */
3370 "undefined", /* 41 */
3371 "undefined", /* 42 */
3372 "undefined", /* 43 */
3373 "undefined", /* 44 */
3374 "undefined", /* 45 */
3375 "undefined", /* 46 */
3376 "undefined", /* 47 */
3377 "undefined", /* 48 */
3378 "undefined", /* 49 */
3379 "undefined", /* 50 */
3380 "undefined", /* 51 */
3381 "undefined", /* 52 */
3382 "undefined", /* 53 */
3383 "undefined", /* 54 */
3384 "undefined", /* 55 */
3385 "undefined", /* 56 */
3386 "undefined", /* 57 */
3387 "undefined", /* 58 */
3388 "undefined", /* 59 */
3389 "undefined", /* 60 */
3390 "undefined", /* 61 */
3391 "undefined", /* 62 */
3392 "undefined", /* 63 */
3393 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3399 /* Directory routines for systems that don't have them. */
3401 #ifdef SYSV_SYSTEM_DIR
3405 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3409 register DIR *dirp
; /* stream from opendir */
3413 rtnval
= sys_close (dirp
->dd_fd
);
3415 /* Some systems (like Solaris) allocate the buffer and the DIR all
3416 in one block. Why in the world are we freeing this ourselves
3418 #if ! (defined (sun) && defined (USG5_4))
3419 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3421 xfree ((char *) dirp
);
3425 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3426 #endif /* SYSV_SYSTEM_DIR */
3428 #ifdef NONSYSTEM_DIR_LIBRARY
3432 char *filename
; /* name of directory */
3434 register DIR *dirp
; /* -> malloc'ed storage */
3435 register int fd
; /* file descriptor for read */
3436 struct stat sbuf
; /* result of fstat */
3438 fd
= sys_open (filename
, 0);
3443 if (fstat (fd
, &sbuf
) < 0
3444 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3445 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3449 return 0; /* bad luck today */
3454 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3461 register DIR *dirp
; /* stream from opendir */
3463 sys_close (dirp
->dd_fd
);
3464 xfree ((char *) dirp
);
3472 ino_t od_ino
; /* inode */
3473 char od_name
[DIRSIZ
]; /* filename */
3475 #endif /* not VMS */
3477 struct direct dir_static
; /* simulated directory contents */
3482 register DIR *dirp
; /* stream from opendir */
3485 register struct olddir
*dp
; /* -> directory data */
3487 register struct dir$_name
*dp
; /* -> directory data */
3488 register struct dir$_version
*dv
; /* -> version data */
3493 if (dirp
->dd_loc
>= dirp
->dd_size
)
3494 dirp
->dd_loc
= dirp
->dd_size
= 0;
3496 if (dirp
->dd_size
== 0 /* refill buffer */
3497 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3501 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3502 dirp
->dd_loc
+= sizeof (struct olddir
);
3504 if (dp
->od_ino
!= 0) /* not deleted entry */
3506 dir_static
.d_ino
= dp
->od_ino
;
3507 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3508 dir_static
.d_name
[DIRSIZ
] = '\0';
3509 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3510 dir_static
.d_reclen
= sizeof (struct direct
)
3512 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3513 return &dir_static
; /* -> simulated structure */
3516 dp
= (struct dir$_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$t_name
[dirp
->dd_loc
];
3521 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3522 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3523 dir_static
.d_reclen
= sizeof (struct direct
)
3525 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3526 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3527 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3528 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3535 /* readdirver is just like readdir except it returns all versions of a file
3536 as separate entries. */
3541 register DIR *dirp
; /* stream from opendir */
3543 register struct dir$_name
*dp
; /* -> directory data */
3544 register struct dir$_version
*dv
; /* -> version data */
3546 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3547 dirp
->dd_loc
= dirp
->dd_size
= 0;
3549 if (dirp
->dd_size
== 0 /* refill buffer */
3550 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3553 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3554 if (dirp
->dd_loc
== 0)
3555 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3556 : dp
->dir$b_namecount
;
3557 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3558 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3559 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3560 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3561 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3562 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3563 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3564 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3570 #endif /* NONSYSTEM_DIR_LIBRARY */
3574 set_file_times (filename
, atime
, mtime
)
3576 EMACS_TIME atime
, mtime
;
3579 struct timeval tv
[2];
3582 return utimes (filename
, tv
);
3583 #else /* not HAVE_UTIMES */
3585 utb
.actime
= EMACS_SECS (atime
);
3586 utb
.modtime
= EMACS_SECS (mtime
);
3587 return utime (filename
, &utb
);
3588 #endif /* not HAVE_UTIMES */
3591 /* mkdir and rmdir functions, for systems which don't have them. */
3595 * Written by Robert Rother, Mariah Corporation, August 1985.
3597 * If you want it, it's yours. All I ask in return is that if you
3598 * figure out how to do this in a Bourne Shell script you send me
3600 * sdcsvax!rmr or rmr@uscd
3602 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3603 * subroutine. 11Mar86; hoptoad!gnu
3605 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3606 * subroutine didn't return EEXIST. It does now.
3612 #ifdef MKDIR_PROTOTYPE
3616 mkdir (dpath
, dmode
)
3621 int cpid
, status
, fd
;
3622 struct stat statbuf
;
3624 if (stat (dpath
, &statbuf
) == 0)
3626 errno
= EEXIST
; /* Stat worked, so it already exists */
3630 /* If stat fails for a reason other than non-existence, return error */
3631 if (errno
!= ENOENT
)
3634 synch_process_alive
= 1;
3635 switch (cpid
= fork ())
3638 case -1: /* Error in fork */
3639 return (-1); /* Errno is set already */
3641 case 0: /* Child process */
3643 * Cheap hack to set mode of new directory. Since this
3644 * child process is going away anyway, we zap its umask.
3645 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3646 * directory. Does anybody care?
3648 status
= umask (0); /* Get current umask */
3649 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3650 fd
= sys_open("/dev/null", 2);
3657 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3658 _exit (-1); /* Can't exec /bin/mkdir */
3660 default: /* Parent process */
3661 wait_for_termination (cpid
);
3664 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3666 errno
= EIO
; /* We don't know why, but */
3667 return -1; /* /bin/mkdir failed */
3672 #endif /* not HAVE_MKDIR */
3679 int cpid
, status
, fd
;
3680 struct stat statbuf
;
3682 if (stat (dpath
, &statbuf
) != 0)
3684 /* Stat just set errno. We don't have to */
3688 synch_process_alive
= 1;
3689 switch (cpid
= fork ())
3692 case -1: /* Error in fork */
3693 return (-1); /* Errno is set already */
3695 case 0: /* Child process */
3696 fd
= sys_open("/dev/null", 2);
3703 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3704 _exit (-1); /* Can't exec /bin/rmdir */
3706 default: /* Parent process */
3707 wait_for_termination (cpid
);
3710 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3712 errno
= EIO
; /* We don't know why, but */
3713 return -1; /* /bin/rmdir failed */
3718 #endif /* !HAVE_RMDIR */
3722 /* Functions for VMS */
3724 #include "vms-pwd.h"
3729 /* Return as a string the VMS error string pertaining to STATUS.
3730 Reuses the same static buffer each time it is called. */
3734 int status
; /* VMS status code */
3738 static char buf
[257];
3740 bufadr
[0] = sizeof buf
- 1;
3741 bufadr
[1] = (int) buf
;
3742 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3743 return "untranslatable VMS error status";
3751 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3752 * not work correctly. (It also doesn't work well in version 2.3.)
3757 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3758 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3762 unsigned short s_buflen
;
3763 unsigned short s_code
;
3765 unsigned short *s_retlenadr
;
3769 #define buflen s.s_buflen
3770 #define code s.s_code
3771 #define bufadr s.s_bufadr
3772 #define retlenadr s.s_retlenadr
3774 #define R_OK 4 /* test for read permission */
3775 #define W_OK 2 /* test for write permission */
3776 #define X_OK 1 /* test for execute (search) permission */
3777 #define F_OK 0 /* test for presence of file */
3780 sys_access (path
, mode
)
3784 static char *user
= NULL
;
3787 /* translate possible directory spec into .DIR file name, so brain-dead
3788 * access can treat the directory like a file. */
3789 if (directory_file_name (path
, dir_fn
))
3793 return access (path
, mode
);
3794 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3800 unsigned short int dummy
;
3802 static int constant
= ACL$C_FILE
;
3803 DESCRIPTOR (path_desc
, path
);
3804 DESCRIPTOR (user_desc
, user
);
3808 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3811 acces
|= CHP$M_READ
;
3813 acces
|= CHP$M_WRITE
;
3814 itemlst
[0].buflen
= sizeof (int);
3815 itemlst
[0].code
= CHP$_FLAGS
;
3816 itemlst
[0].bufadr
= (char *) &flags
;
3817 itemlst
[0].retlenadr
= &dummy
;
3818 itemlst
[1].buflen
= sizeof (int);
3819 itemlst
[1].code
= CHP$_ACCESS
;
3820 itemlst
[1].bufadr
= (char *) &acces
;
3821 itemlst
[1].retlenadr
= &dummy
;
3822 itemlst
[2].end
= CHP$_END
;
3823 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3824 return stat
== SS$_NORMAL
? 0 : -1;
3828 #else /* not VMS4_4 */
3831 #define ACE$M_WRITE 2
3832 #define ACE$C_KEYID 1
3834 static unsigned short memid
, grpid
;
3835 static unsigned int uic
;
3837 /* Called from init_sys_modes, so it happens not very often
3838 but at least each time Emacs is loaded. */
3839 sys_access_reinit ()
3845 sys_access (filename
, type
)
3851 int status
, size
, i
, typecode
, acl_controlled
;
3852 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3853 union prvdef prvmask
;
3855 /* Get UIC and GRP values for protection checking. */
3858 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3861 memid
= uic
& 0xFFFF;
3865 if (type
!= 2) /* not checking write access */
3866 return access (filename
, type
);
3868 /* Check write protection. */
3870 #define CHECKPRIV(bit) (prvmask.bit)
3871 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3873 /* Find privilege bits */
3874 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3876 error ("Unable to find privileges: %s", vmserrstr (status
));
3877 if (CHECKPRIV (PRV$V_BYPASS
))
3878 return 0; /* BYPASS enabled */
3880 fab
.fab$b_fac
= FAB$M_GET
;
3881 fab
.fab$l_fna
= filename
;
3882 fab
.fab$b_fns
= strlen (filename
);
3883 fab
.fab$l_xab
= &xab
;
3884 xab
= cc$rms_xabpro
;
3885 xab
.xab$l_aclbuf
= aclbuf
;
3886 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3887 status
= SYS$
OPEN (&fab
, 0, 0);
3890 SYS$
CLOSE (&fab
, 0, 0);
3891 /* Check system access */
3892 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3894 /* Check ACL entries, if any */
3896 if (xab
.xab$w_acllen
> 0)
3899 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3900 while (*aclptr
&& aclptr
< aclend
)
3902 size
= (*aclptr
& 0xff) / 4;
3903 typecode
= (*aclptr
>> 8) & 0xff;
3904 if (typecode
== ACE$C_KEYID
)
3905 for (i
= size
- 1; i
> 1; i
--)
3906 if (aclptr
[i
] == uic
)
3909 if (aclptr
[1] & ACE$M_WRITE
)
3910 return 0; /* Write access through ACL */
3912 aclptr
= &aclptr
[size
];
3914 if (acl_controlled
) /* ACL specified, prohibits write access */
3917 /* No ACL entries specified, check normal protection */
3918 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3920 if (WRITABLE (XAB$V_GRP
) &&
3921 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3922 return 0; /* Group writable */
3923 if (WRITABLE (XAB$V_OWN
) &&
3924 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3925 return 0; /* Owner writable */
3927 return -1; /* Not writable */
3929 #endif /* not VMS4_4 */
3932 static char vtbuf
[NAM$C_MAXRSS
+1];
3934 /* translate a vms file spec to a unix path */
3936 sys_translate_vms (vfile
)
3947 /* leading device or logical name is a root directory */
3948 if (p
= strchr (vfile
, ':'))
3957 if (*p
== '[' || *p
== '<')
3959 while (*++vfile
!= *p
+ 2)
3963 if (vfile
[-1] == *p
)
3986 static char utbuf
[NAM$C_MAXRSS
+1];
3988 /* translate a unix path to a VMS file spec */
3990 sys_translate_unix (ufile
)
4013 if (index (&ufile
[1], '/'))
4020 if (index (&ufile
[1], '/'))
4027 if (strncmp (ufile
, "./", 2) == 0)
4034 ufile
++; /* skip the dot */
4035 if (index (&ufile
[1], '/'))
4040 else if (strncmp (ufile
, "../", 3) == 0)
4048 ufile
+= 2; /* skip the dots */
4049 if (index (&ufile
[1], '/'))
4074 extern char *getcwd ();
4076 #define MAXPATHLEN 1024
4078 ptr
= xmalloc (MAXPATHLEN
);
4079 val
= getcwd (ptr
, MAXPATHLEN
);
4085 strcpy (pathname
, ptr
);
4093 long item_code
= JPI$_OWNER
;
4094 unsigned long parent_id
;
4097 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4100 vaxc$errno
= status
;
4110 return (getgid () << 16) | getuid ();
4114 sys_read (fildes
, buf
, nbyte
)
4119 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4124 sys_write (fildes
, buf
, nbyte
)
4129 register int nwrote
, rtnval
= 0;
4131 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4137 return rtnval
? rtnval
: -1;
4138 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4139 return rtnval
? rtnval
: -1;
4140 return (rtnval
+ nwrote
);
4145 * VAX/VMS VAX C RTL really loses. It insists that records
4146 * end with a newline (carriage return) character, and if they
4147 * don't it adds one (nice of it isn't it!)
4149 * Thus we do this stupidity below.
4153 sys_write (fildes
, buf
, nbytes
)
4156 unsigned int nbytes
;
4163 fstat (fildes
, &st
);
4169 /* Handle fixed-length files with carriage control. */
4170 if (st
.st_fab_rfm
== FAB$C_FIX
4171 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4173 len
= st
.st_fab_mrs
;
4174 retval
= write (fildes
, p
, min (len
, nbytes
));
4177 retval
++; /* This skips the implied carriage control */
4181 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4182 while (*e
!= '\n' && e
> p
) e
--;
4183 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4184 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4186 retval
= write (fildes
, p
, len
);
4197 /* Create file NEW copying its attributes from file OLD. If
4198 OLD is 0 or does not exist, create based on the value of
4201 /* Protection value the file should ultimately have.
4202 Set by create_copy_attrs, and use by rename_sansversions. */
4203 static unsigned short int fab_final_pro
;
4206 creat_copy_attrs (old
, new)
4209 struct FAB fab
= cc$rms_fab
;
4210 struct XABPRO xabpro
;
4211 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4212 extern int vms_stmlf_recfm
;
4216 fab
.fab$b_fac
= FAB$M_GET
;
4217 fab
.fab$l_fna
= old
;
4218 fab
.fab$b_fns
= strlen (old
);
4219 fab
.fab$l_xab
= (char *) &xabpro
;
4220 xabpro
= cc$rms_xabpro
;
4221 xabpro
.xab$l_aclbuf
= aclbuf
;
4222 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4223 /* Call $OPEN to fill in the fab & xabpro fields. */
4224 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4226 SYS$
CLOSE (&fab
, 0, 0);
4227 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4228 if (xabpro
.xab$w_acllen
> 0)
4230 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4231 /* If the acl buffer was too short, redo open with longer one.
4232 Wouldn't need to do this if there were some system imposed
4233 limit on the size of an ACL, but I can't find any such. */
4235 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4236 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4237 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4238 SYS$
CLOSE (&fab
, 0, 0);
4244 xabpro
.xab$l_aclbuf
= 0;
4249 fab
.fab$l_fna
= new;
4250 fab
.fab$b_fns
= strlen (new);
4254 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4255 fab
.fab$b_rat
= FAB$M_CR
;
4258 /* Set the file protections such that we will be able to manipulate
4259 this file. Once we are done writing and renaming it, we will set
4260 the protections back. */
4262 fab_final_pro
= xabpro
.xab$w_pro
;
4264 SYS$
SETDFPROT (0, &fab_final_pro
);
4265 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4267 /* Create the new file with either default attrs or attrs copied
4269 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4271 SYS$
CLOSE (&fab
, 0, 0);
4272 /* As this is a "replacement" for creat, return a file descriptor
4273 opened for writing. */
4274 return open (new, O_WRONLY
);
4279 #include <varargs.h>
4282 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4286 sys_creat (va_alist
)
4289 va_list list_incrementer
;
4292 int rfd
; /* related file descriptor */
4293 int fd
; /* Our new file descriptor */
4300 extern int vms_stmlf_recfm
;
4303 va_start (list_incrementer
);
4304 name
= va_arg (list_incrementer
, char *);
4305 mode
= va_arg (list_incrementer
, int);
4307 rfd
= va_arg (list_incrementer
, int);
4308 va_end (list_incrementer
);
4311 /* Use information from the related file descriptor to set record
4312 format of the newly created file. */
4313 fstat (rfd
, &st_buf
);
4314 switch (st_buf
.st_fab_rfm
)
4317 strcpy (rfm
, "rfm = fix");
4318 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4319 strcpy (rat
, "rat = ");
4320 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4322 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4323 strcat (rat
, "ftn");
4324 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4325 strcat (rat
, "prn");
4326 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4327 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4328 strcat (rat
, ", blk");
4330 strcat (rat
, "blk");
4331 return creat (name
, 0, rfm
, rat
, mrs
);
4334 strcpy (rfm
, "rfm = vfc");
4335 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4336 strcpy (rat
, "rat = ");
4337 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4339 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4340 strcat (rat
, "ftn");
4341 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4342 strcat (rat
, "prn");
4343 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4344 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4345 strcat (rat
, ", blk");
4347 strcat (rat
, "blk");
4348 return creat (name
, 0, rfm
, rat
, fsz
);
4351 strcpy (rfm
, "rfm = stm");
4355 strcpy (rfm
, "rfm = stmcr");
4359 strcpy (rfm
, "rfm = stmlf");
4363 strcpy (rfm
, "rfm = udf");
4367 strcpy (rfm
, "rfm = var");
4370 strcpy (rat
, "rat = ");
4371 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4373 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4374 strcat (rat
, "ftn");
4375 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4376 strcat (rat
, "prn");
4377 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4378 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4379 strcat (rat
, ", blk");
4381 strcat (rat
, "blk");
4385 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4386 strcpy (rat
, "rat=cr");
4388 /* Until the VAX C RTL fixes the many bugs with modes, always use
4389 mode 0 to get the user's default protection. */
4390 fd
= creat (name
, 0, rfm
, rat
);
4391 if (fd
< 0 && errno
== EEXIST
)
4393 if (unlink (name
) < 0)
4394 report_file_error ("delete", build_string (name
));
4395 fd
= creat (name
, 0, rfm
, rat
);
4401 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4402 sys_fwrite (ptr
, size
, num
, fp
)
4403 register char * ptr
;
4406 register int tot
= num
* size
;
4413 * The VMS C library routine creat actually creates a new version of an
4414 * existing file rather than truncating the old version. There are times
4415 * when this is not the desired behavior, for instance, when writing an
4416 * auto save file (you only want one version), or when you don't have
4417 * write permission in the directory containing the file (but the file
4418 * itself is writable). Hence this routine, which is equivalent to
4419 * "close (creat (fn, 0));" on Unix if fn already exists.
4425 struct FAB xfab
= cc$rms_fab
;
4426 struct RAB xrab
= cc$rms_rab
;
4429 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4430 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4431 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4432 xfab
.fab$l_fna
= fn
;
4433 xfab
.fab$b_fns
= strlen (fn
);
4434 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4436 xrab
.rab$l_fab
= &xfab
;
4438 /* This gibberish opens the file, positions to the first record, and
4439 deletes all records from there until the end of file. */
4440 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4442 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4443 (SYS$
FIND (&xrab
) & 01) == 01 &&
4444 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4455 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4456 SYSPRV or a readable SYSUAF.DAT. */
4462 * Routine to read the VMS User Authorization File and return
4463 * a specific user's record.
4466 static struct UAF retuaf
;
4469 get_uaf_name (uname
)
4476 uaf_fab
= cc$rms_fab
;
4477 uaf_rab
= cc$rms_rab
;
4478 /* initialize fab fields */
4479 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4480 uaf_fab
.fab$b_fns
= 21;
4481 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4482 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4483 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4484 /* initialize rab fields */
4485 uaf_rab
.rab$l_fab
= &uaf_fab
;
4486 /* open the User Authorization File */
4487 status
= SYS$
OPEN (&uaf_fab
);
4491 vaxc$errno
= status
;
4494 status
= SYS$
CONNECT (&uaf_rab
);
4498 vaxc$errno
= status
;
4501 /* read the requested record - index is in uname */
4502 uaf_rab
.rab$l_kbf
= uname
;
4503 uaf_rab
.rab$b_ksz
= strlen (uname
);
4504 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4505 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4506 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4507 status
= SYS$
GET (&uaf_rab
);
4511 vaxc$errno
= status
;
4514 /* close the User Authorization File */
4515 status
= SYS$
DISCONNECT (&uaf_rab
);
4519 vaxc$errno
= status
;
4522 status
= SYS$
CLOSE (&uaf_fab
);
4526 vaxc$errno
= status
;
4540 uaf_fab
= cc$rms_fab
;
4541 uaf_rab
= cc$rms_rab
;
4542 /* initialize fab fields */
4543 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4544 uaf_fab
.fab$b_fns
= 21;
4545 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4546 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4547 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4548 /* initialize rab fields */
4549 uaf_rab
.rab$l_fab
= &uaf_fab
;
4550 /* open the User Authorization File */
4551 status
= SYS$
OPEN (&uaf_fab
);
4555 vaxc$errno
= status
;
4558 status
= SYS$
CONNECT (&uaf_rab
);
4562 vaxc$errno
= status
;
4565 /* read the requested record - index is in uic */
4566 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4567 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4568 uaf_rab
.rab$b_ksz
= sizeof uic
;
4569 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4570 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4571 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4572 status
= SYS$
GET (&uaf_rab
);
4576 vaxc$errno
= status
;
4579 /* close the User Authorization File */
4580 status
= SYS$
DISCONNECT (&uaf_rab
);
4584 vaxc$errno
= status
;
4587 status
= SYS$
CLOSE (&uaf_fab
);
4591 vaxc$errno
= status
;
4597 static struct passwd retpw
;
4605 /* copy these out first because if the username is 32 chars, the next
4606 section will overwrite the first byte of the UIC */
4607 retpw
.pw_uid
= up
->uaf$w_mem
;
4608 retpw
.pw_gid
= up
->uaf$w_grp
;
4610 /* I suppose this is not the best style, to possibly overwrite one
4611 byte beyond the end of the field, but what the heck... */
4612 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4613 while (ptr
[-1] == ' ')
4616 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4618 /* the rest of these are counted ascii strings */
4619 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4620 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4621 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4622 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4623 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4624 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4625 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4626 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4630 #else /* not READ_SYSUAF */
4631 static struct passwd retpw
;
4632 #endif /* not READ_SYSUAF */
4643 unsigned char * full
;
4644 #endif /* READ_SYSUAF */
4649 if ('a' <= *ptr
&& *ptr
<= 'z')
4654 if (!(up
= get_uaf_name (name
)))
4656 return cnv_uaf_pw (up
);
4658 if (strcmp (name
, getenv ("USER")) == 0)
4660 retpw
.pw_uid
= getuid ();
4661 retpw
.pw_gid
= getgid ();
4662 strcpy (retpw
.pw_name
, name
);
4663 if (full
= egetenv ("FULLNAME"))
4664 strcpy (retpw
.pw_gecos
, full
);
4666 *retpw
.pw_gecos
= '\0';
4667 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4668 *retpw
.pw_shell
= '\0';
4673 #endif /* not READ_SYSUAF */
4683 if (!(up
= get_uaf_uic (uid
)))
4685 return cnv_uaf_pw (up
);
4687 if (uid
== sys_getuid ())
4688 return getpwnam (egetenv ("USER"));
4691 #endif /* not READ_SYSUAF */
4694 /* return total address space available to the current process. This is
4695 the sum of the current p0 size, p1 size and free page table entries
4700 unsigned long free_pages
;
4701 unsigned long frep0va
;
4702 unsigned long frep1va
;
4705 item_code
= JPI$_FREPTECNT
;
4706 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4709 vaxc$errno
= status
;
4714 item_code
= JPI$_FREP0VA
;
4715 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4718 vaxc$errno
= status
;
4721 item_code
= JPI$_FREP1VA
;
4722 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4725 vaxc$errno
= status
;
4729 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4732 define_logical_name (varname
, string
)
4736 struct dsc$descriptor_s strdsc
=
4737 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4738 struct dsc$descriptor_s envdsc
=
4739 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4740 struct dsc$descriptor_s lnmdsc
=
4741 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4743 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4746 delete_logical_name (varname
)
4749 struct dsc$descriptor_s envdsc
=
4750 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4751 struct dsc$descriptor_s lnmdsc
=
4752 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4754 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4765 error ("execvp system call not implemented");
4773 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4774 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4775 char from_esn
[NAM$C_MAXRSS
];
4776 char to_esn
[NAM$C_MAXRSS
];
4778 from_fab
.fab$l_fna
= from
;
4779 from_fab
.fab$b_fns
= strlen (from
);
4780 from_fab
.fab$l_nam
= &from_nam
;
4781 from_fab
.fab$l_fop
= FAB$M_NAM
;
4783 from_nam
.nam$l_esa
= from_esn
;
4784 from_nam
.nam$b_ess
= sizeof from_esn
;
4786 to_fab
.fab$l_fna
= to
;
4787 to_fab
.fab$b_fns
= strlen (to
);
4788 to_fab
.fab$l_nam
= &to_nam
;
4789 to_fab
.fab$l_fop
= FAB$M_NAM
;
4791 to_nam
.nam$l_esa
= to_esn
;
4792 to_nam
.nam$b_ess
= sizeof to_esn
;
4794 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4800 if (status
== RMS$_DEV
)
4804 vaxc$errno
= status
;
4809 /* This function renames a file like `rename', but it strips
4810 the version number from the "to" filename, such that the "to" file is
4811 will always be a new version. It also sets the file protection once it is
4812 finished. The protection that we will use is stored in fab_final_pro,
4813 and was set when we did a creat_copy_attrs to create the file that we
4816 We could use the chmod function, but Eunichs uses 3 bits per user category
4817 to describe the protection, and VMS uses 4 (write and delete are separate
4818 bits). To maintain portability, the VMS implementation of `chmod' wires
4819 the W and D bits together. */
4822 static struct fibdef fib
; /* We need this initialized to zero */
4823 char vms_file_written
[NAM$C_MAXRSS
];
4826 rename_sans_version (from
,to
)
4833 struct FAB to_fab
= cc$rms_fab
;
4834 struct NAM to_nam
= cc$rms_nam
;
4835 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4836 struct dsc$descriptor fib_attr
[2]
4837 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4838 char to_esn
[NAM$C_MAXRSS
];
4840 $
DESCRIPTOR (disk
,to_esn
);
4842 to_fab
.fab$l_fna
= to
;
4843 to_fab
.fab$b_fns
= strlen (to
);
4844 to_fab
.fab$l_nam
= &to_nam
;
4845 to_fab
.fab$l_fop
= FAB$M_NAM
;
4847 to_nam
.nam$l_esa
= to_esn
;
4848 to_nam
.nam$b_ess
= sizeof to_esn
;
4850 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4852 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4853 *(to_nam
.nam$l_ver
) = '\0';
4855 stat
= rename (from
, to_esn
);
4859 strcpy (vms_file_written
, to_esn
);
4861 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4862 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4864 /* Now set the file protection to the correct value */
4865 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4867 /* Copy these fields into the fib */
4868 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4869 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4870 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4872 SYS$
CLOSE (&to_fab
, 0, 0);
4874 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4877 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4878 0, 0, 0, &fib_attr
, 0);
4881 stat
= SYS$
DASSGN (chan
);
4884 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4894 unsigned short fid
[3];
4895 char esa
[NAM$C_MAXRSS
];
4898 fab
.fab$l_fop
= FAB$M_OFP
;
4899 fab
.fab$l_fna
= file
;
4900 fab
.fab$b_fns
= strlen (file
);
4901 fab
.fab$l_nam
= &nam
;
4904 nam
.nam$l_esa
= esa
;
4905 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4907 status
= SYS$
PARSE (&fab
);
4908 if ((status
& 1) == 0)
4911 vaxc$errno
= status
;
4914 status
= SYS$
SEARCH (&fab
);
4915 if ((status
& 1) == 0)
4918 vaxc$errno
= status
;
4922 fid
[0] = nam
.nam$w_fid
[0];
4923 fid
[1] = nam
.nam$w_fid
[1];
4924 fid
[2] = nam
.nam$w_fid
[2];
4926 fab
.fab$l_fna
= new;
4927 fab
.fab$b_fns
= strlen (new);
4929 status
= SYS$
PARSE (&fab
);
4930 if ((status
& 1) == 0)
4933 vaxc$errno
= status
;
4937 nam
.nam$w_fid
[0] = fid
[0];
4938 nam
.nam$w_fid
[1] = fid
[1];
4939 nam
.nam$w_fid
[2] = fid
[2];
4941 nam
.nam$l_esa
= nam
.nam$l_name
;
4942 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4944 status
= SYS$
ENTER (&fab
);
4945 if ((status
& 1) == 0)
4948 vaxc$errno
= status
;
4958 printf ("%s not yet implemented\r\n", badfunc
);
4966 /* Arrange to return a range centered on zero. */
4967 return rand () - (1 << 30);
4978 /* Called from init_sys_modes. */
4983 /* If we're not on an HFT we shouldn't do any of this. We determine
4984 if we are on an HFT by trying to get an HFT error code. If this
4985 call fails, we're not on an HFT. */
4987 if (ioctl (0, HFQERROR
, &junk
) < 0)
4989 #else /* not IBMR2AIX */
4990 if (ioctl (0, HFQEIO
, 0) < 0)
4992 #endif /* not IBMR2AIX */
4994 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4995 as the rubout key's ASCII code. Here this is changed. The bug is that
4996 there's no way to determine the old mapping, so in reset_sys_modes
4997 we need to assume that the normal map had been present. Of course, this
4998 code also doesn't help if on a terminal emulator which doesn't understand
5002 struct hfkeymap keymap
;
5004 buf
.hf_bufp
= (char *)&keymap
;
5005 buf
.hf_buflen
= sizeof (keymap
);
5006 keymap
.hf_nkeys
= 2;
5007 keymap
.hfkey
[0].hf_kpos
= 15;
5008 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5010 keymap
.hfkey
[0].hf_keyidh
= '<';
5011 #else /* not IBMR2AIX */
5012 keymap
.hfkey
[0].hf_page
= '<';
5013 #endif /* not IBMR2AIX */
5014 keymap
.hfkey
[0].hf_char
= 127;
5015 keymap
.hfkey
[1].hf_kpos
= 15;
5016 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5018 keymap
.hfkey
[1].hf_keyidh
= '<';
5019 #else /* not IBMR2AIX */
5020 keymap
.hfkey
[1].hf_page
= '<';
5021 #endif /* not IBMR2AIX */
5022 keymap
.hfkey
[1].hf_char
= 127;
5023 hftctl (0, HFSKBD
, &buf
);
5025 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
5027 line_ins_del_ok
= char_ins_del_ok
= 0;
5030 /* Reset the rubout key to backspace. */
5035 struct hfkeymap keymap
;
5039 if (ioctl (0, HFQERROR
, &junk
) < 0)
5041 #else /* not IBMR2AIX */
5042 if (ioctl (0, HFQEIO
, 0) < 0)
5044 #endif /* not IBMR2AIX */
5046 buf
.hf_bufp
= (char *)&keymap
;
5047 buf
.hf_buflen
= sizeof (keymap
);
5048 keymap
.hf_nkeys
= 2;
5049 keymap
.hfkey
[0].hf_kpos
= 15;
5050 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5052 keymap
.hfkey
[0].hf_keyidh
= '<';
5053 #else /* not IBMR2AIX */
5054 keymap
.hfkey
[0].hf_page
= '<';
5055 #endif /* not IBMR2AIX */
5056 keymap
.hfkey
[0].hf_char
= 8;
5057 keymap
.hfkey
[1].hf_kpos
= 15;
5058 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5060 keymap
.hfkey
[1].hf_keyidh
= '<';
5061 #else /* not IBMR2AIX */
5062 keymap
.hfkey
[1].hf_page
= '<';
5063 #endif /* not IBMR2AIX */
5064 keymap
.hfkey
[1].hf_char
= 8;
5065 hftctl (0, HFSKBD
, &buf
);
5072 /* These are included on Sunos 4.1 when we do not use shared libraries.
5073 X11 libraries may refer to these functions but (we hope) do not
5074 actually call them. */
5094 #endif /* USE_DL_STUBS */
5103 register int length
;
5107 long max_str
= 65535;
5109 while (length
> max_str
) {
5110 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5115 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5117 while (length
-- > 0)
5119 #endif /* not VMS */
5122 #endif /* no bzero */
5123 #endif /* BSTRING */
5125 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5128 /* Saying `void' requires a declaration, above, where bcopy is used
5129 and that declaration causes pain for systems where bcopy is a macro. */
5130 bcopy (b1
, b2
, length
)
5133 register int length
;
5136 long max_str
= 65535;
5138 while (length
> max_str
) {
5139 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5145 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5147 while (length
-- > 0)
5149 #endif /* not VMS */
5151 #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5156 bcmp (b1
, b2
, length
) /* This could be a macro! */
5159 register int length
;
5162 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5163 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5165 return STR$
COMPARE (&src1
, &src2
);
5167 while (length
-- > 0)
5172 #endif /* not VMS */
5174 #endif /* no bcmp */
5175 #endif /* not BSTRING */