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- /* Interfaces to system-dependent kernel and library entries.
- Copyright (C) 1985, 1986, 1987, 1988, 1990 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- /* This must precede sys/signal.h on certain machines. */
- #include <sys/types.h>
- #include <signal.h>
- #include <setjmp.h>
-
- #include "config.h"
- #include "lisp.h"
- #undef NULL
-
- #define min(x,y) ((x) > (y) ? (y) : (x))
-
- /* In this file, open, read and write refer to the system calls,
- not our sugared interfaces sys_open, sys_read and sys_write.
- Contrariwise, for systems where we use the system calls directly,
- define sys_read, etc. here as aliases for them. */
- #ifndef read
- #define sys_read read
- #define sys_write write
- #endif /* `read' is not a macro */
-
- #undef read
- #undef write
-
- #ifndef close
- #define sys_close close
- #else
- #undef close
- #endif
-
- #ifndef open
- #define sys_open open
- #else /* `open' is a macro */
- #undef open
- #endif /* `open' is a macro */
-
- #include <stdio.h>
- #include <sys/stat.h>
- #include <errno.h>
-
- extern int errno;
- #ifndef VMS
- extern char *sys_errlist[];
- #endif
-
- #ifdef VMS
- #include <rms.h>
- #include <ttdef.h>
- #include <tt2def.h>
- #include <iodef.h>
- #include <ssdef.h>
- #include <descrip.h>
- #include <fibdef.h>
- #include <atrdef.h>
- #include <ctype.h>
- #include <string.h>
- #ifdef __GNUC__
- #include <sys/file.h>
- #else
- #include <file.h>
- #endif
- #undef F_SETFL
- #ifndef RAB$C_BID
- #include <rab.h>
- #endif
- #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */
- #endif /* VMS */
-
- #ifndef BSD4_1
- #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG)
- because the vms compiler doesn't grok `defined' */
- #include <fcntl.h>
- #endif
- #ifdef USG
- #include <fcntl.h>
- #endif
- #endif /* not 4.1 bsd */
-
- /* Get DGUX definition for FASYNC - DJB */
- #ifdef DGUX
- #include <sys/file.h>
- #endif /* DGUX */
-
- #ifdef BSD
- #include <sys/ioctl.h>
- #ifdef BSD4_1
- #include <wait.h>
- #else /* not 4.1 */
- #include <sys/wait.h>
- #endif /* not 4.1 */
- #endif /* BSD */
-
- #ifdef STRIDE
- #include <sys/ioctl.h>
- #endif
-
- #ifdef NEED_TERMIOS
- #include <sys/termios.h>
- #endif
-
- #ifdef mips
- #include <sys/ioctl.h>
- #endif
-
- #ifdef _SEQUENT_
- #include <sys/stropts.h>
- #endif /* _SEQUENT_ */
-
- #ifdef AIX
- /* Get files for keyboard remapping */
- #define HFNKEYS 2
- #include <sys/hft.h>
- #include <sys/devinfo.h>
- #endif
-
- /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */
- #ifdef BSD4_1
- #undef LLITOUT
- #define LLITOUT 0
- #endif /* 4.1 */
-
- #ifdef HAVE_TERMIO
- #if defined(AIX) && defined(i386)
- #include <termios.h> /* needs to be before termio.h for aix ps/2 */
- #endif
- #ifndef NO_TERMIO
- #include <termio.h>
- #endif
- #ifdef HAVE_TCATTR
- #define TERMINAL struct termios
- #else /* not HAVE_TCATTR */
- #define TERMINAL struct termio
- #endif /* not HAVE_TCATTR */
-
- #ifdef IBMR2AIX
- #include <termios.h>
- #ifdef TIOCGETP
- #undef TIOCGETP
- #endif /* no TIOCGETP */
- #define TIOCGETP TCGETS
- #undef TIOCSETN
- #define TIOCSETN TCSETSW
- #undef TIOCSETP
- #define TIOCSETP TCSETSF
- #undef TCSETAW
- #define TCSETAW TCSETS
- #else /* not IBMR2AIX */
- #ifdef HAVE_TCATTR
- #include <termios.h>
- #endif /* HAVE_TCATTR */
- #undef TIOCGETP
- #define TIOCGETP TCGETA
- #undef TIOCSETN
- #define TIOCSETN TCSETAW
- #undef TIOCSETP
- #define TIOCSETP TCSETAF
- #endif /* not IBMR2AIX */
-
- /* Try to establish the correct character to disable terminal functions
- in a system-independent manner. Note that USG (at least) define
- _POSIX_VDISABLE as 0! */
- #ifdef _POSIX_VDISABLE
- #define CDISABLE _POSIX_VDISABLE
- #else /* not _POSIX_VDISABLE */
- #ifdef CDEL
- #define CDISABLE CDEL
- #else /* not CDEL */
- #define CDISABLE 255
- #endif /* not CDEL */
- #endif /* not _POSIX_VDISABLE */
-
- #ifndef OSPEED
- #define OSPEED(str) (str.c_cflag & CBAUD)
- #endif
- #ifndef SETOSPEED
- #define SETOSPEED(str,new) (str.c_cflag = (str.c_cflag & ~CBAUD) | (new))
- #endif
- #define TABS_OK(str) ((str.c_oflag & TABDLY) != TAB3)
- #endif /* HAVE_TERMIO */
-
- #ifndef HAVE_TCATTR /* If HAVE_TCATTR, this is a primitive. */
- #define tcgetattr(fd, addr) ioctl (fd, TIOCGETP, addr)
- #endif
-
- #ifdef XENIX
- #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
- #endif
-
- #ifdef BROKEN_TIOCGETC
- #undef TIOCGETC
- #endif
-
- #ifdef BROKEN_TIOCGWINSZ
- #undef TIOCGWINSZ
- #endif
-
- #ifndef HAVE_TERMIO
- #ifndef VMS
- #if defined(DGUX) && defined(_BSD_TTY_FLAVOR)
- #undef _BSD_TTY_FLAVOR
- /* DGUX 4.3 has it's own definition in sgtty.h, and it's different
- than the one in s-dgux.h */
- #endif
- #include <sgtty.h>
- #define TERMINAL struct sgttyb
- #ifndef OSPEED
- #define OSPEED(str) str.sg_ospeed
- #endif
- #ifndef SETOSPEED
- #define SETOSPEED(str,new) (str.sg_ospeed = (new))
- #endif
- #define TABS_OK(str) ((str.sg_flags & XTABS) != XTABS)
- #undef TCSETAW
- #define TCSETAW TIOCSETN
- #endif /* not VMS */
- #endif /* not HAVE_TERMIO */
-
- #ifdef USG
- #include <sys/utsname.h>
- #include <string.h>
- #ifndef MEMORY_IN_STRING_H
- #include <memory.h>
- #endif
- #ifdef TIOCGWINSZ
- #ifndef IRIS_4D
- #ifndef mips
- #ifndef aix386
- #ifndef NO_SIOCTL_H
- /* Some USG systems with TIOCGWINSZ need this file; some don't have it.
- We don't know how to distinguish them.
- If this #include gets an error, just delete it. */
- #include <sys/sioctl.h>
- #endif
- #ifdef NEED_PTEM_H
- #include <sys/stream.h>
- #include <sys/ptem.h>
- #endif
- #endif /* not aix386 */
- #endif /* not mips */
- #endif /* not IRIS_4D */
- #endif /* TIOCGWINSZ */
- #ifdef HAVE_TIMEVAL
- #ifdef HPUX
- #include <time.h>
- #else
- #include <sys/time.h>
- #endif
- #endif /* HAVE_TIMEVAL */
- #endif /* USG */
-
- #ifdef VMS
- #include "window.h"
- #endif
-
- #ifdef NEED_BSDTTY
- #include <sys/bsdtty.h>
- #endif
-
- #if defined (HPUX) && defined (HAVE_PTYS)
- #include <sys/ptyio.h>
- #endif
-
- #ifdef AIX
- #include <sys/pty.h>
- #include <unistd.h>
- #endif /* AIX */
-
- #ifdef SYSV_PTYS
- #include <sys/tty.h>
- #include <sys/pty.h>
- #endif
-
- #include "filetypes.h"
-
- /* FASYNC defined in this file. But, FASYNC don't working.
- so no problem, because unrequest_sigio only need. */
- #if defined (pfa)
- #include <sys/file.h>
- #endif
-
- #ifdef BROKEN_FIONREAD
- #undef FIONREAD
- #undef FASYNC
- #endif
-
- extern int quit_char;
-
- #include "termhooks.h"
- #include "termchar.h"
- #include "termopts.h"
- #include "dispextern.h"
-
- #ifdef NONSYSTEM_DIR_LIBRARY
- #include "ndir.h"
- #endif /* NONSYSTEM_DIR_LIBRARY */
-
- #include "emacssignal.h"
-
- /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
- testing SIGCHLD. */
-
- #ifndef VMS
- #ifdef SIGCLD
- #ifndef SIGCHLD
- #define SIGCHLD SIGCLD
- #endif /* not SIGCHLD */
- #endif /* SIGCLD */
- #endif /* not VMS */
-
- static int baud_convert[] =
- #ifdef BAUD_CONVERT
- BAUD_CONVERT;
- #else
- {
- 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
- 1800, 2400, 4800, 9600, 19200, 38400
- };
- #endif
-
- extern short ospeed;
-
- #ifdef VMS
- static struct iosb
- {
- short status;
- short offset;
- short termlen;
- short term;
- } input_iosb;
-
- int kbd_input_ast ();
-
- int waiting_for_ast;
- int stop_input;
- int input_ef = 0;
- int timer_ef = 0;
- int process_ef = 0;
- int input_eflist;
- int timer_eflist;
-
- static int input_chan;
- static $DESCRIPTOR (input_dsc, "TT");
- static int terminator_mask[2] = { 0, 0 };
-
- static struct sensemode {
- short status;
- unsigned char xmit_baud;
- unsigned char rcv_baud;
- unsigned char crfill;
- unsigned char lffill;
- unsigned char parity;
- unsigned char unused;
- char class;
- char type;
- short scr_wid;
- unsigned long tt_char : 24, scr_len : 8;
- unsigned long tt2_char;
- } sensemode_iosb;
- #define TERMINAL struct sensemode
- #define OSPEED(str) (str.xmit_baud)
- #define TABS_OK(str) ((str.tt_char & TT$M_MECHTAB) != 0)
- #endif /* VMS */
-
- discard_tty_input ()
- {
- TERMINAL buf;
-
- if (noninteractive)
- return;
-
- /* Discarding input is not safe when the input could contain
- replies from the X server. So don't do it. */
- if (read_socket_hook)
- return;
-
- #ifdef VMS
- end_kbd_input ();
- SYS$QIOW (0, input_chan, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0,
- &buf, 0, 0, terminator_mask, 0, 0);
- queue_kbd_input ();
- #else /* not VMS */
- #ifdef APOLLO
- {
- int zero = 0;
- ioctl (0, TIOCFLUSH, &zero);
- }
- #else /* not Apollo */
- tcgetattr (0, &buf);
- #ifndef HAVE_TCATTR
- ioctl (0, TIOCSETP, &buf);
- #else
- tcsetattr (0, TCSAFLUSH, &buf);
- #endif
- #endif /* not Apollo */
- #endif /* not VMS */
- }
-
- #ifdef SIGTSTP
-
- stuff_char (c)
- char c;
- {
- /* Should perhaps error if in batch mode */
- #ifdef TIOCSTI
- ioctl (0, TIOCSTI, &c);
- #else /* no TIOCSTI */
- error ("Cannot stuff terminal input characters in this version of Unix.");
- #endif /* no TIOCSTI */
- }
-
- #endif /* SIGTSTP */
-
- init_baud_rate ()
- {
- TERMINAL sg;
-
- if (noninteractive)
- ospeed = 0;
- else
- {
- #ifdef VMS
- SYS$QIOW (0, input_chan, IO$_SENSEMODE, &sg, 0, 0,
- &sg.class, 12, 0, 0, 0, 0 );
- #else
- SETOSPEED (sg, B9600);
- tcgetattr (0, &sg);
- #endif /* not VMS */
- ospeed = OSPEED (sg);
- }
-
- baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0]
- ? baud_convert[ospeed] : 9600);
- if (baud_rate == 0)
- baud_rate = 1200;
- }
-
- /*ARGSUSED*/
- set_exclusive_use (fd)
- int fd;
- {
- #ifdef FIOCLEX
- ioctl (fd, FIOCLEX, 0);
- #endif
- /* Ok to do nothing if this feature does not exist */
- }
-
- #ifndef subprocesses
-
- wait_without_blocking ()
- {
- #ifdef BSD
- wait3 (0, WNOHANG | WUNTRACED, 0);
- #else
- croak ("wait_without_blocking");
- #endif
- }
-
- #endif /* not subprocesses */
-
- int wait_debugging; /* Set nonzero to make following function work under dbx
- (at least for bsd). */
-
- /* Wait for subprocess with process id `pid' to terminate and
- make sure it will get eliminated (not remain forever as a zombie) */
-
- wait_for_termination (pid)
- int pid;
- {
- while (1)
- {
- #ifdef subprocesses
- #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5))
- /* Note that kill returns -1 even if the process is just a zombie now.
- But inevitably a SIGCHLD interrupt should be generated
- and child_sig will do wait3 and make the process go away. */
- /* There is some indication that there is a bug involved with
- termination of subprocesses, perhaps involving a kernel bug too,
- but no idea what it is. Just as a hunch we signal SIGCHLD to see
- if that causes the problem to go away or get worse. */
- #ifdef BSD4_1
- extern int synch_process_pid;
- sighold (SIGCHLD);
- if (synch_process_pid == 0)
- {
- sigrelse (SIGCHLD);
- break;
- }
- if (wait_debugging)
- sleep (1);
- else
- sigpause (SIGCHLD);
- #else /* not BSD4_1 */
- sigsetmask (sigmask (SIGCHLD));
- if (0 > kill (pid, 0))
- {
- sigsetmask (SIGEMPTYMASK);
- kill (getpid (), SIGCHLD);
- break;
- }
- if (wait_debugging)
- sleep (1);
- else
- sigpause (SIGEMPTYMASK);
- #endif /* not BSD4_1 */
- #else /* not BSD, and not HPUX version >= 6 */
- #ifdef UNIPLUS
- if (0 > kill (pid, 0))
- break;
- wait (0);
- #else /* neither BSD nor UNIPLUS: random sysV */
- #ifdef HAVE_SYSV_SIGPAUSE
- sighold (SIGCHLD);
- if (0 > kill (pid, 0))
- {
- sigrelse (SIGCHLD);
- break;
- }
- sigpause (SIGCHLD);
- #else /* not HAVE_SYSV_SIGPAUSE */
- if (0 > kill (pid, 0))
- break;
- /* Using sleep instead of pause avoids timing error.
- If the inferior dies just before the sleep,
- we lose just one second. */
- sleep (1);
- #endif /* not HAVE_SYSV_SIGPAUSE */
- #endif /* not UNIPLUS */
- #endif /* not BSD, and not HPUX version >= 6 */
- #else /* not subprocesses */
- #ifndef BSD4_1
- if (0 > kill (pid, 0))
- break;
- sleep (1);
- #else /* BSD4_1 */
- int status;
- status = wait (0);
- if (status == pid || status == -1)
- break;
- #endif /* BSD4_1 */
- #endif /* not subprocesses */
- }
- }
-
- #ifdef subprocesses
-
- /*
- * flush any pending output
- * (may flush input as well; it does not matter the way we use it)
- */
-
- flush_pending_output (channel)
- int channel;
- {
- #ifdef TCFLSH
- ioctl (channel, TCFLSH, 1);
- #else
- #ifdef TIOCFLUSH
- int zero = 0;
- /* 3rd arg should be ignored
- but some 4.2 kernels actually want the address of an int
- and nonzero means something different. */
- ioctl (channel, TIOCFLUSH, &zero);
- #endif
- #endif
- }
-
- /* Set up the terminal at the other end of a pseudo-terminal that
- we will be controlling an inferior through.
- It should not echo or do line-editing, since that is done
- in Emacs. No padding needed for insertion into an Emacs buffer. */
-
- child_setup_tty (out)
- int out;
- {
- TERMINAL s;
-
- tcgetattr (out, &s);
- #ifdef HAVE_TERMIO
- s.c_oflag |= OPOST; /* Enable output postprocessing */
- s.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
- s.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); /* No output delays */
- s.c_lflag &= ~ECHO; /* Disable echo */
- s.c_lflag |= ISIG; /* Enable signals */
- s.c_iflag &= ~IUCLC; /* Disable map of upper case to lower on input */
- s.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on output */
- /* said to be unnecesary
- s.c_cc[VMIN] = 1; /* minimum number of characters to accept
- s.c_cc[VTIME] = 0; /* wait forever for at least 1 character
- */
- s.c_lflag |= ICANON; /* Enable erase/kill and eof processing */
- s.c_cc[VEOF] = 04; /* insure that EOF is Control-D */
- s.c_cc[VERASE] = 0377; /* disable erase processing */
- s.c_cc[VKILL] = 0377; /* disable kill processing */
- #ifdef IRIS_4D /* This is needed for the sake of process_send_signal.
- Probably a wide class of systems need something like this,
- but in 18.58, let's be cautious. */
- s.c_cc[VSWTCH] = 032;
- #endif
- #ifdef HPUX
- s.c_cflag = (s.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
- #endif /* HPUX */
-
- #ifdef AIX
- /* AIX enhanced edit loses NULs, so disable it */
- #ifndef IBMR2AIX
- s.c_line = 0;
- s.c_iflag &= ~ASCEDIT;
- #endif
- /* Also, PTY overloads NUL and BREAK.
- don't ignore break, but don't signal either, so it looks like NUL. */
- s.c_iflag &= ~IGNBRK;
- s.c_iflag &= ~BRKINT;
- #if defined(TIOCGPGRP) && defined(TIOCGLTC) && defined(TIOCGETC)
- /* the QUIT and INTR character are used in process_send_signal
- so set them here to something useful. */
- if (s.c_cc[VQUIT] == 0377)
- s.c_cc[VQUIT] = '\\'&037; /* Control-\ */
- if (s.c_cc[VINTR] == 0377)
- s.c_cc[VINTR] = 'C'&037; /* Control-C */
- #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
- /* QUIT and INTR are sent using system calls, so disable character forms. */
- s.c_cc[VQUIT] = 0377;
- s.c_cc[VINTR] = 0377;
- s.c_lflag &= ~ISIG;
- #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
- s.c_cc[VEOL] = 0377;
- s.c_cflag = (s.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
- #endif /* AIX */
-
- #else /* not HAVE_TERMIO */
- s.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | CBREAK | TANDEM);
- s.sg_erase = 0377;
- s.sg_kill = 0377;
- #endif /* not HAVE_TERMIO */
-
- #ifndef HAVE_TCATTR
- ioctl (out, TIOCSETN, &s);
- #else
- tcsetattr (out, TCSADRAIN, &s);
- #endif
-
- #ifdef BSD4_1
- if (interrupt_input)
- reset_sigio ();
- #endif /* BSD4_1 */
- #ifdef RTU
- {
- int zero = 0;
- ioctl (out, FIOASYNC, &zero);
- }
- #endif /* RTU */
- }
-
- #endif /* subprocesses */
-
- /*ARGSUSED*/
- setpgrp_of_tty (pid)
- int pid;
- {
- #ifdef IBMR2AIX
- tcsetpgrp ( 0, pid);
- #else
- #ifdef TIOCSPGRP
- ioctl (0, TIOCSPGRP, &pid);
- #else
- /* Just ignore this for now and hope for the best */
- #endif
- #endif
- }
-
- /* Record a signal code and the handler for it. */
- struct save_signal
- {
- int code;
- int (*handler) ();
- };
-
- /* Suspend the Emacs process; give terminal to its superior. */
-
- sys_suspend ()
- {
- #ifdef VMS
- unsigned long parent_id;
-
- parent_id = getppid ();
- if (parent_id && parent_id != 0xffffffff)
- {
- int oldsig = (int) signal (SIGINT, SIG_IGN);
- int status = LIB$ATTACH (&parent_id) & 1;
- signal (SIGINT, oldsig);
- return status;
- }
- return -1;
- #else
- #ifdef SIGTSTP
- #ifdef BSD
- killpg (getpgrp (0), SIGTSTP);
- #else
- kill (-getpgrp (0), SIGTSTP);
- #endif
-
- #else
- #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
- ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
- kill (getpid (), SIGQUIT);
-
- #else
-
- /* On a system where suspending is not implemented,
- instead fork a subshell and let it talk directly to the terminal
- while we wait. */
- int pid = fork ();
- struct save_signal saved_handlers[5];
-
- saved_handlers[0].code = SIGINT;
- saved_handlers[1].code = SIGQUIT;
- saved_handlers[2].code = SIGTERM;
- #ifdef SIGIO
- saved_handlers[3].code = SIGIO;
- saved_handlers[4].code = 0;
- #else
- saved_handlers[3].code = 0;
- #endif
-
- if (pid == -1)
- error ("Can't spawn subshell");
- if (pid == 0)
- {
- char *sh;
-
- sh = (char *) egetenv ("SHELL");
- if (sh == 0)
- sh = "sh";
- /* Use our buffer's default directory for the subshell. */
- {
- Lisp_Object dir;
- unsigned char *str;
- int len;
-
- /* mentioning current_buffer->buffer would mean including buffer.h,
- which somehow wedges the hp compiler. So instead... */
-
- dir = intern ("default-directory");
- /* Can't use NULL */
- if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil))
- goto xyzzy;
- dir = Fsymbol_value (dir);
- if (XTYPE (dir) != Lisp_String)
- goto xyzzy;
-
- str = (unsigned char *) alloca (XSTRING (dir)->size + 2);
- len = XSTRING (dir)->size;
- bcopy (XSTRING (dir)->data, str, len);
- if (str[len - 1] != '/') str[len++] = '/';
- str[len] = 0;
- chdir (str);
- }
- xyzzy:
- #ifdef subprocesses
- close_process_descs (); /* Close Emacs's pipes/ptys */
- #endif
- execlp (sh, sh, 0);
- write (1, "Can't execute subshell", 22);
- _exit (1);
- }
- save_signal_handlers (saved_handlers);
- wait_for_termination (pid);
- restore_signal_handlers (saved_handlers);
- #endif /* no USG_JOBCTRL */
- #endif /* no SIGTSTP */
- #endif /* not VMS */
- }
-
- save_signal_handlers (saved_handlers)
- struct save_signal *saved_handlers;
- {
- while (saved_handlers->code)
- {
- saved_handlers->handler
- = (int (*) ()) signal (saved_handlers->code, SIG_IGN);
- saved_handlers++;
- }
- }
-
- restore_signal_handlers (saved_handlers)
- struct save_signal *saved_handlers;
- {
- while (saved_handlers->code)
- {
- signal (saved_handlers->code, saved_handlers->handler);
- saved_handlers++;
- }
- }
-
- #ifdef F_SETFL
-
- int old_fcntl_flags;
-
- init_sigio ()
- {
- #ifdef FASYNC
- old_fcntl_flags = fcntl (0, F_GETFL, 0) & ~FASYNC;
- #endif
- request_sigio ();
- }
-
- reset_sigio ()
- {
- unrequest_sigio ();
- }
-
- #ifdef FASYNC /* F_SETFL does not imply existance of FASYNC */
-
- request_sigio ()
- {
- #ifdef SIGWINCH
- sigunblock (sigmask (SIGWINCH));
- #endif
- fcntl (0, F_SETFL, old_fcntl_flags | FASYNC);
-
- interrupts_deferred = 0;
- }
-
- unrequest_sigio ()
- {
- #ifdef SIGWINCH
- sigblock (sigmask (SIGWINCH));
- #endif
- fcntl (0, F_SETFL, old_fcntl_flags);
- interrupts_deferred = 1;
- }
-
- #else /* no FASYNC */
- #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
-
- request_sigio ()
- {
- int on = 1;
- ioctl (0, FIOASYNC, &on);
- interrupts_deferred = 0;
- }
-
- unrequest_sigio ()
- {
- int off = 0;
-
- ioctl (0, FIOASYNC, &off);
- interrupts_deferred = 1;
- }
-
- #else /* not FASYNC, not STRIDE */
-
- request_sigio ()
- {
- croak ("request_sigio");
- }
-
- unrequest_sigio ()
- {
- croak ("unrequest_sigio");
- }
-
- #endif /* STRIDE */
- #endif /* FASYNC */
- #endif /* F_SETFL */
-
- TERMINAL old_gtty; /* The initial tty mode bits */
-
- int term_initted; /* 1 if outer tty status has been recorded */
-
- #ifdef F_SETOWN
- int old_fcntl_owner;
- #endif /* F_SETOWN */
-
- #ifdef TIOCGLTC
- struct ltchars old_ltchars;
- #endif /* TIOCGLTC */
-
- #ifdef TIOCGETC
- struct tchars old_tchars;
- int old_lmode;
-
- int lmode; /* Current lmode value. */
- /* Needed as global for 4.1 */
- #endif /* TIOCGETC */
-
- /* This may also be defined in stdio,
- but if so, this does no harm,
- and using the same name avoids wasting the other one's space. */
-
- #if defined (USG) || defined (DGUX)
- unsigned char _sobuf[BUFSIZ+8];
- #else
- char _sobuf[BUFSIZ];
- #endif
-
- #ifdef TIOCGLTC
- static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1};
- #endif
- #ifdef TIOCGETC
- static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1};
- #endif
-
- init_sys_modes ()
- {
- TERMINAL tty;
- #ifdef TIOCGETC
- struct tchars tchars;
- #endif
- #ifdef VMS
- #if 0
- static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */
- extern int (*interrupt_signal) ();
- #endif
- #endif
-
- if (noninteractive)
- return;
-
- #ifdef VMS
- if (!input_ef)
- LIB$GET_EF (&input_ef);
- SYS$CLREF (input_ef);
- waiting_for_ast = 0;
- if (!timer_ef)
- LIB$GET_EF (&timer_ef);
- SYS$CLREF (timer_ef);
- if (!process_ef)
- {
- LIB$GET_EF (&process_ef);
- SYS$CLREF (process_ef);
- }
- if (input_ef / 32 != process_ef / 32)
- croak ("Input and process event flags in different clusters.");
- if (input_ef / 32 != timer_ef / 32)
- croak ("Input and process event flags in different clusters.");
- input_eflist = ((unsigned) 1 << (input_ef % 32)) |
- ((unsigned) 1 << (process_ef % 32));
- timer_eflist = ((unsigned) 1 << (input_ef % 32)) |
- ((unsigned) 1 << (timer_ef % 32));
- SYS$QIOW (0, input_chan, IO$_SENSEMODE, &old_gtty, 0, 0,
- &old_gtty.class, 12, 0, 0, 0, 0);
- #ifndef VMS4_4
- sys_access_reinit ();
- #endif
- #else /* not VMS */
- tcgetattr (0, &old_gtty);
- #endif /* not VMS */
- if (!read_socket_hook)
- {
- tty = old_gtty;
-
- #ifdef HAVE_TERMIO
- tty.c_iflag |= (IGNBRK); /* Ignore break condition */
- tty.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
- #ifdef ISTRIP
- tty.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
- #endif
- tty.c_lflag &= ~ECHO; /* Disable echo */
- tty.c_lflag &= ~ICANON; /* Disable erase/kill processing */
- #ifdef IEXTEN
- tty.c_iflag &= ~IEXTEN; /* Disable other editing characters. */
- #endif
- tty.c_lflag |= ISIG; /* Enable signals */
- if (flow_control)
- {
- tty.c_iflag |= IXON; /* Enable start/stop output control */
- #ifdef IXANY
- tty.c_iflag &= ~IXANY;
- #endif /* IXANY */
- }
- else
- tty.c_iflag &= ~IXON; /* Disable start/stop output control */
- tty.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
- tty.c_oflag &= ~TAB3; /* Disable tab expansion */
- #ifdef CS8
- tty.c_cflag |= CS8; /* allow 8th bit on input */
- tty.c_cflag &= ~PARENB; /* Don't check parity */
- #endif
- tty.c_cc[VINTR] = quit_char; /* ^G gives SIGINT */
- /* Set up C-g (usually) for both SIGQUIT and SIGINT.
- We don't know which we will get, but we handle both alike
- so which one it really gives us does not matter. */
- tty.c_cc[VQUIT] = quit_char;
- tty.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */
- tty.c_cc[VTIME] = 0; /* no matter how long that takes. */
- #ifdef VSWTCH
- tty.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use of C-z */
- #endif /* VSWTCH */
- #if defined (mips) || defined (HAVE_TCATTR)
- #ifdef VSUSP
- tty.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */
- #endif /* VSUSP */
- #ifdef V_DSUSP
- tty.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */
- #endif /* V_DSUSP */
- #ifdef VDSUSP /* Some systems use VDSUSP instead of VD_SUSP. */
- tty.c_cc[VDSUSP] = CDISABLE;
- #endif /* VDSUSP */
- #endif /* mips or HAVE_TCATTR */
-
- #ifdef AIX
- #ifndef IBMR2AIX
- /* AIX enhanced edit loses NULs, so disable it */
- tty.c_line = 0;
- tty.c_iflag &= ~ASCEDIT;
- #else
- tty.c_cc[VSTRT] = 255;
- tty.c_cc[VSTOP] = 255;
- tty.c_cc[VSUSP] = 255;
- tty.c_cc[VDSUSP] = 255;
- #endif /* IBMR2AIX */
- /* Also, PTY overloads NUL and BREAK.
- don't ignore break, but don't signal either, so it looks like NUL.
- This really serves a purpose only if running in an XTERM window
- or via TELNET or the like, but does no harm elsewhere. */
- tty.c_iflag &= ~IGNBRK;
- tty.c_iflag &= ~BRKINT;
- #endif /* AIX */
-
- #else /* if not HAVE_TERMIO */
- #ifdef VMS
- tty.tt_char |= TT$M_NOECHO | TT$M_EIGHTBIT;
- if (flow_control)
- tty.tt_char |= TT$M_TTSYNC;
- else
- tty.tt_char &= ~TT$M_TTSYNC;
- tty.tt2_char |= TT2$M_PASTHRU | TT2$M_XON;
- #else /* not VMS (BSD, that is) */
- tty.sg_flags &= ~(ECHO | CRMOD | XTABS);
- tty.sg_flags |= ANYP;
- tty.sg_flags |= interrupt_input ? RAW : CBREAK;
- #endif /* not VMS (BSD, that is) */
- #endif /* not HAVE_TERMIO */
-
- #ifdef VMS
- SYS$QIOW (0, input_chan, IO$_SETMODE, &input_iosb, 0, 0,
- &tty.class, 12, 0, 0, 0, 0);
- #else
- #ifndef HAVE_TCATTR
- ioctl (0, TIOCSETN, &tty);
- #else
- tcsetattr (0, TCSADRAIN, &tty);
- #endif
- #endif /* not VMS */
-
- /* This code added to insure that, if flow-control is not to be used,
- we have an unlocked screen at the start. */
- #ifdef TCXONC
- if (!flow_control) ioctl (0, TCXONC, 1);
- #endif
- #ifndef APOLLO
- #ifdef TIOCSTART
- if (!flow_control) ioctl (0, TIOCSTART, 0);
- #endif
- #endif
-
- #ifdef AIX
- hft_init ();
- #ifdef IBMR2AIX
- {
- /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
- to be only LF. This is the way that is done. */
- struct termio tty;
-
- if (ioctl (1, HFTGETID, &tty) != -1)
- write (1, "\033[20l", 5);
- }
- #endif
- #endif
-
- #ifdef F_SETFL
- #ifdef F_GETOWN /* F_SETFL does not imply existance of F_GETOWN */
- if (interrupt_input)
- {
- old_fcntl_owner = fcntl (0, F_GETOWN, 0);
- fcntl (0, F_SETOWN, getpid ());
- init_sigio ();
- }
- #endif /* F_GETOWN */
- #endif /* F_SETFL */
-
- /* If going to use CBREAK mode, we must request C-g to interrupt
- and turn off start and stop chars, etc.
- If not going to use CBREAK mode, do this anyway
- so as to turn off local flow control for user coming over
- network on 4.2; in this case, only t_stopc and t_startc really matter. */
- #ifdef TIOCGLTC
- ioctl (0, TIOCGLTC, &old_ltchars);
- #endif /* TIOCGLTC */
- #ifndef HAVE_TERMIO
- #ifdef TIOCGETC
- ioctl (0, TIOCGETC, &old_tchars);
- ioctl (0, TIOCLGET, &old_lmode);
-
- /* Note: if not using CBREAK mode, it makes no difference how we set this */
- tchars = new_tchars;
- tchars.t_intrc = quit_char;
- if (flow_control)
- {
- tchars.t_startc = '\021';
- tchars.t_stopc = '\023';
- }
- /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
- #ifndef LPASS8
- #define LPASS8 0
- #endif
-
- #ifdef BSD4_1
- #define LNOFLSH 0100000
- #endif
-
- lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_lmode;
-
- ioctl (0, TIOCSETC, &tchars);
- ioctl (0, TIOCLSET, &lmode);
- #endif /* TIOCGETC */
- #endif /* not HAVE_TERMIO */
- #ifdef TIOCGLTC
- ioctl (0, TIOCSLTC, &new_ltchars);
- #endif /* TIOCGLTC */
-
- #ifdef BSD4_1
- if (interrupt_input)
- init_sigio ();
- #endif
- #ifdef VMS
- /* Appears to do nothing when in PASTHRU mode.
- SYS$QIOW (0, input_chan, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
- interrupt_signal, oob_chars, 0, 0, 0, 0);
- */
- queue_kbd_input (0);
- #endif /* VMS */
- }
- #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
- #undef _IOFBF
- #endif
- #ifdef _IOFBF
- /* This symbol is defined on recent USG systems.
- Someone says without this call USG won't really buffer the file
- even with a call to setbuf. */
- setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf);
- #else
- setbuf (stdout, _sobuf);
- #endif
- set_terminal_modes ();
- if (term_initted && no_redraw_on_reenter)
- {
- if (display_completed)
- direct_output_forward_char (0);
- }
- else
- screen_garbaged = 1;
- term_initted = 1;
- }
-
- /* Return nonzero if safe to use tabs in output.
- At the time this is called, init_sys_modes has not been done yet. */
-
- tabs_safe_p ()
- {
- TERMINAL tty;
- if (noninteractive)
- return 1;
- #ifdef VMS
- SYS$QIOW (0, input_chan, IO$_SENSEMODE, &tty, 0, 0,
- &tty.class, 12, 0, 0, 0, 0);
- #else
- tcgetattr (0, &tty);
- #endif /* not VMS */
- return (TABS_OK (tty));
- }
-
- /* Get terminal size from system.
- Store number of lines into *heightp and width into *widthp.
- If zero or a negative number is stored, the value is not valid. */
-
- get_screen_size (widthp, heightp)
- int *widthp, *heightp;
- {
- /* Define the 4.3 names in terms of the Sun names
- if the latter exist and the former do not. */
- #ifdef TIOCGSIZE
- #ifndef TIOCGWINSZ
- #define TIOCGWINSZ TIOCGSIZE
- #define winsize ttysize
- #define ws_row ts_lines
- #define ws_col ts_cols
- #endif
- #endif /* Sun */
-
- /* Do it using the 4.3 names if possible. */
- #ifdef TIOCGWINSZ
- struct winsize size;
- *widthp = 0;
- *heightp = 0;
- if (ioctl (0, TIOCGWINSZ, &size) < 0)
- return;
- *widthp = size.ws_col;
- *heightp = size.ws_row;
- #else /* not TIOCGWNSIZ */
- #ifdef VMS
- TERMINAL tty;
- SYS$QIOW (0, input_chan, IO$_SENSEMODE, &tty, 0, 0,
- &tty.class, 12, 0, 0, 0, 0);
- *widthp = tty.scr_wid;
- *heightp = tty.scr_len;
- #else /* system doesn't know size */
- *widthp = 0;
- *heightp = 0;
- #endif /* system does not know size */
- #endif /* not TIOCGWINSZ */
- }
-
- reset_sys_modes ()
- {
- if (noninteractive)
- {
- fflush (stdout);
- return;
- }
- if (!term_initted)
- return;
- if (read_socket_hook)
- return;
- move_cursor (screen_height - 1, 0);
- clear_end_of_line (screen_width);
- /* clear_end_of_line may move the cursor */
- move_cursor (screen_height - 1, 0);
- /* Output raw CR so kernel can track the cursor hpos. */
- cmputc ('\r');
- #ifdef IBMR2AIX
- {
- /* HFT devices normally use ^J as a LF/CR. We forced it to
- do the LF only. Now, we need to reset it. */
- struct termio tty;
-
- if (ioctl (1, HFTGETID, &tty) != -1)
- write (1, "\033[20h", 5);
- }
- #endif
-
- reset_terminal_modes ();
- fflush (stdout);
- #ifdef BSD
- #ifndef BSD4_1
- /* Avoid possible loss of output when changing terminal modes. */
- fsync (fileno (stdout));
- #endif
- #endif
- #ifdef TIOCGLTC
- ioctl (0, TIOCSLTC, &old_ltchars);
- #endif /* TIOCGLTC */
- #ifndef HAVE_TERMIO
- #ifdef TIOCGETC
- ioctl (0, TIOCSETC, &old_tchars);
- ioctl (0, TIOCLSET, &old_lmode);
- #endif /* TIOCGETC */
- #endif /* not HAVE_TERMIO */
- #ifdef F_SETFL
- #ifdef F_SETOWN /* F_SETFL does not imply existance of F_SETOWN */
- if (interrupt_input)
- {
- reset_sigio ();
- fcntl (0, F_SETOWN, old_fcntl_owner);
- }
- #endif /* F_SETOWN */
- #endif /* F_SETFL */
- #ifdef BSD4_1
- if (interrupt_input)
- reset_sigio ();
- #endif /* BSD4_1 */
- #ifdef VMS
- end_kbd_input ();
- SYS$QIOW (0, input_chan, IO$_SETMODE, &input_iosb, 0, 0,
- &old_gtty.class, 12, 0, 0, 0, 0);
- #else /* not VMS */
- #ifndef HAVE_TCATTR
- while (ioctl (0, TCSETAW, &old_gtty) < 0 && errno == EINTR);
- #else
- while (tcsetattr (0, TCSADRAIN, &old_gtty) < 0 && errno == EINTR);
- #endif
- #endif /* not VMS */
-
- #ifdef AIX
- hft_reset ();
- #endif
- }
-
- #ifdef HAVE_PTYS
-
- /* Set up the proper status flags for use of a pty. */
-
- setup_pty (fd)
- int fd;
- {
- /* I'm told that TOICREMOTE does not mean control chars
- "can't be sent" but rather that they don't have
- input-editing or signaling effects.
- That should be good, because we have other ways
- to do those things in Emacs.
- However, telnet mode seems not to work on 4.2.
- So TIOCREMOTE is turned off now. */
-
- /* Under hp-ux, if TIOCREMOTE is turned on, some calls
- will hang. In particular, the "timeout" feature (which
- causes a read to return if there is no data available)
- does this. Also it is known that telnet mode will hang
- in such a way that Emacs must be stopped (perhaps this
- is the same problem).
-
- If TIOCREMOTE is turned off, then there is a bug in
- hp-ux which sometimes loses data. Apparently the
- code which blocks the master process when the internal
- buffer fills up does not work. Other than this,
- though, everything else seems to work fine.
-
- Since the latter lossage is more benign, we may as well
- lose that way. -- cph */
- #ifdef FIONBIO
- #ifdef SYSV_PTYS
- {
- int on = 1;
- ioctl (fd, FIONBIO, &on);
- }
- #endif
- #endif
- #ifdef IBMRTAIX
- /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
- /* ignore SIGHUP once we've started a child on a pty. Note that this may */
- /* cause EMACS not to die when it should, i.e., when its own controlling */
- /* tty goes away. I've complained to the AIX developers, and they may */
- /* change this behavior, but I'm not going to hold my breath. */
- signal (SIGHUP, SIG_IGN);
- #endif
- }
- #endif /* HAVE_PTYS */
-
- #ifdef VMS
-
- /* Assigning an input channel is done at the start of Emacs execution.
- This is called each time Emacs is resumed, also, but does nothing
- because input_chain is no longer zero. */
-
- init_vms_input ()
- {
- int status;
-
- if (input_chan == 0)
- {
- status = SYS$ASSIGN (&input_dsc, &input_chan, 0, 0);
- if (! (status & 1))
- LIB$STOP (status);
- }
- }
-
- /* Deassigning the input channel is done before exiting. */
-
- stop_vms_input ()
- {
- return SYS$DASSGN (input_chan);
- }
-
- short input_buffer;
-
- /* Request reading one character into the keyboard buffer.
- This is done as soon as the buffer becomes empty. */
-
- queue_kbd_input ()
- {
- int status;
- waiting_for_ast = 0;
- stop_input = 0;
- status = SYS$QIO (0, input_chan, IO$_READVBLK,
- &input_iosb, kbd_input_ast, 1,
- &input_buffer, 1, 0, terminator_mask, 0, 0);
- }
-
- int input_count;
-
- /* Ast routine that is called when keyboard input comes in
- in accord with the SYS$QIO above. */
-
- kbd_input_ast ()
- {
- register int c = -1;
- int old_errno = errno;
-
- if (waiting_for_ast)
- SYS$SETEF (input_ef);
- waiting_for_ast = 0;
- input_count++;
- #ifdef ASTDEBUG
- if (input_count == 25)
- exit (1);
- printf ("Ast # %d,", input_count);
- printf (" iosb = %x, %x, %x, %x",
- input_iosb.offset, input_iosb.status, input_iosb.termlen,
- input_iosb.term);
- #endif
- if (input_iosb.offset)
- {
- c = input_buffer;
- #ifdef ASTDEBUG
- printf (", char = 0%o", c);
- #endif
- }
- #ifdef ASTDEBUG
- printf ("\n");
- fflush (stdout);
- sleep (1);
- #endif
- if (! stop_input)
- queue_kbd_input ();
- if (c >= 0)
- kbd_buffer_store_char (c);
-
- errno = old_errno;
- }
-
- /* Wait until there is something in kbd_buffer. */
-
- wait_for_kbd_input ()
- {
- extern int have_process_input, process_exited;
-
- /* If already something, avoid doing system calls. */
- if (detect_input_pending ())
- {
- return;
- }
- /* Clear a flag, and tell ast routine above to set it. */
- SYS$CLREF (input_ef);
- waiting_for_ast = 1;
- /* Check for timing error: ast happened while we were doing that. */
- if (!detect_input_pending ())
- {
- /* No timing error: wait for flag to be set. */
- set_waiting_for_input (0);
- SYS$WFLOR (input_ef, input_eflist);
- clear_waiting_for_input (0);
- if (!detect_input_pending ())
- /* Check for subprocess input availability */
- {
- int dsp = have_process_input || process_exited;
-
- sys$clref (process_ef);
- if (have_process_input)
- process_command_input ();
- if (process_exited)
- process_exit ();
- if (dsp)
- {
- update_mode_lines++;
- redisplay_preserve_echo_area ();
- }
- }
- }
- waiting_for_ast = 0;
- }
-
- /* Get rid of any pending QIO, when we are about to suspend
- or when we want to throw away pending input.
- We wait for a positive sign that the AST routine has run
- and therefore there is no I/O request queued when we return.
- SYS$SETAST is used to avoid a timing error. */
-
- end_kbd_input ()
- {
- #ifdef ASTDEBUG
- printf ("At end_kbd_input.\n");
- fflush (stdout);
- sleep (1);
- #endif
- if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_char! */
- {
- SYS$CANCEL (input_chan);
- return;
- }
-
- SYS$SETAST (0);
- /* Clear a flag, and tell ast routine above to set it. */
- SYS$CLREF (input_ef);
- waiting_for_ast = 1;
- stop_input = 1;
- SYS$CANCEL (input_chan);
- SYS$SETAST (1);
- SYS$WAITFR (input_ef);
- waiting_for_ast = 0;
- }
-
- /* Wait for either input available or time interval expiry. */
-
- input_wait_timeout (timeval)
- int timeval; /* Time to wait, in seconds */
- {
- int time [2];
- static int zero = 0;
- static int large = -10000000;
-
- LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */
-
- /* If already something, avoid doing system calls. */
- if (detect_input_pending ())
- {
- return;
- }
- /* Clear a flag, and tell ast routine above to set it. */
- SYS$CLREF (input_ef);
- waiting_for_ast = 1;
- /* Check for timing error: ast happened while we were doing that. */
- if (!detect_input_pending ())
- {
- /* No timing error: wait for flag to be set. */
- SYS$CANTIM (1, 0);
- if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */
- SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */
- }
- waiting_for_ast = 0;
- }
-
- /* The standard `sleep' routine works some other way
- and it stops working if you have ever quit out of it.
- This one continues to work. */
-
- sys_sleep (timeval)
- int timeval;
- {
- int time [2];
- static int zero = 0;
- static int large = -10000000;
-
- LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */
-
- SYS$CANTIM (1, 0);
- if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */
- SYS$WAITFR (timer_ef); /* Wait for timer expiry only */
- }
-
- init_sigio ()
- {
- request_sigio ();
- }
-
- reset_sigio ()
- {
- unrequest_sigio ();
- }
-
- request_sigio ()
- {
- croak ("request sigio");
- }
-
- unrequest_sigio ()
- {
- croak ("unrequest sigio");
- }
-
- #endif /* VMS */
-
- /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
- #ifndef CANNOT_DUMP
- #define NEED_STARTS
- #endif
-
- #ifndef SYSTEM_MALLOC
- #ifndef NEED_STARTS
- #define NEED_STARTS
- #endif
- #endif
-
- #ifdef NEED_STARTS
- /* Some systems that cannot dump also cannot implement these. */
-
- /*
- * Return the address of the start of the text segment prior to
- * doing an unexec. After unexec the return value is undefined.
- * See crt0.c for further explanation and _start.
- *
- */
-
- #ifndef CANNOT_UNEXEC
- char *
- start_of_text ()
- {
- #ifdef TEXT_START
- return ((char *) TEXT_START);
- #else
- #ifdef GOULD
- extern csrt ();
- return ((char *) csrt);
- #else /* not GOULD */
- extern int _start ();
- return ((char *) _start);
- #endif /* GOULD */
- #endif /* TEXT_START */
- }
- #endif /* not CANNOT_UNEXEC */
-
- /*
- * Return the address of the start of the data segment prior to
- * doing an unexec. After unexec the return value is undefined.
- * See crt0.c for further information and definition of data_start.
- *
- * Apparently, on BSD systems this is etext at startup. On
- * USG systems (swapping) this is highly mmu dependent and
- * is also dependent on whether or not the program is running
- * with shared text. Generally there is a (possibly large)
- * gap between end of text and start of data with shared text.
- *
- * On Uniplus+ systems with shared text, data starts at a
- * fixed address. Each port (from a given oem) is generally
- * different, and the specific value of the start of data can
- * be obtained via the UniPlus+ specific "uvar" system call,
- * however the method outlined in crt0.c seems to be more portable.
- *
- * Probably what will have to happen when a USG unexec is available,
- * at least on UniPlus, is temacs will have to be made unshared so
- * that text and data are contiguous. Then once loadup is complete,
- * unexec will produce a shared executable where the data can be
- * at the normal shared text boundry and the startofdata variable
- * will be patched by unexec to the correct value.
- *
- */
-
- char *
- start_of_data ()
- {
- #ifdef DATA_START
- return ((char *) DATA_START);
- #else
- extern int data_start;
- return ((char *) &data_start);
- #endif
- }
- #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
-
- #ifndef CANNOT_DUMP
- /* Some systems that cannot dump also cannot implement these. */
-
- /*
- * Return the address of the end of the text segment prior to
- * doing an unexec. After unexec the return value is undefined.
- */
-
- char *
- end_of_text ()
- {
- #ifdef TEXT_END
- return ((char *) TEXT_END);
- #else
- extern int etext;
- return ((char *) &etext);
- #endif
- }
-
- /*
- * Return the address of the end of the data segment prior to
- * doing an unexec. After unexec the return value is undefined.
- */
-
- char *
- end_of_data ()
- {
- #ifdef DATA_END
- return ((char *) DATA_END);
- #else
- extern int edata;
- return ((char *) &edata);
- #endif
- }
-
- #endif /* not CANNOT_DUMP */
-
- /* Get_system_name returns as its value
- a string for the Lisp function system-name to return. */
-
- #ifdef BSD4_1
- #include <whoami.h>
- #endif
-
- /* Can't have this within the function since `static' is #defined to
- * nothing for some USG systems.
- */
- #ifdef USG
- #ifdef HAVE_GETHOSTNAME
- static char get_system_name_name[256];
- #else /* not HAVE_GETHOSTNAME */
- static struct utsname get_system_name_name;
- #endif /* not HAVE_GETHOSTNAME */
- #endif /* USG */
-
- char *
- get_system_name ()
- {
- #ifdef USG
- #ifdef HAVE_GETHOSTNAME
- gethostname (get_system_name_name, sizeof (get_system_name_name));
- return get_system_name_name;
- #else /* not HAVE_GETHOSTNAME */
- uname (&get_system_name_name);
- return (get_system_name_name.nodename);
- #endif /* not HAVE_GETHOSTNAME */
- #else /* Not USG */
- #ifdef BSD4_1
- return sysname;
- #else /* not USG, not 4.1 */
- static char system_name_saved[32];
- #ifdef VMS
- char *sp;
- if ((sp = egetenv ("SYS$NODE")) == 0)
- sp = "vax-vms";
- else
- {
- char *end;
-
- if ((end = index (sp, ':')) != 0)
- *end = '\0';
- }
- strcpy (system_name_saved, sp);
- #else /* not VMS */
- gethostname (system_name_saved, sizeof (system_name_saved));
- #endif /* not VMS */
- return system_name_saved;
- #endif /* not USG, not 4.1 */
- #endif /* not USG */
- }
-
- #ifndef HAVE_SELECT
-
- /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
- * Only checks read descriptors.
- */
- /* How long to wait between checking fds in select */
- #define SELECT_PAUSE 1
- int select_alarmed;
-
- /* For longjmp'ing back to read_input_waiting. */
-
- jmp_buf read_alarm_throw;
-
- /* Nonzero if the alarm signal should throw back to read_input_waiting.
- The read_socket_hook function sets this to 1 while it is waiting. */
-
- int read_alarm_should_throw;
-
- select_alarm ()
- {
- select_alarmed = 1;
- #ifdef BSD4_1
- sigrelse (SIGALRM);
- #else /* not BSD4_1 */
- signal (SIGALRM, SIG_IGN);
- #endif /* not BSD4_1 */
- if (read_alarm_should_throw)
- longjmp (read_alarm_throw, 1);
- }
-
- /* Only rfds are checked. */
- int
- select (nfds, rfds, wfds, efds, timeout)
- int nfds;
- int *rfds, *wfds, *efds, *timeout;
- {
- int ravail = 0, orfds = 0, old_alarm;
- int timeoutval = timeout ? *timeout : 100000;
- int *local_timeout = &timeoutval;
- extern int kbd_count;
- extern int proc_buffered_char[];
- #ifndef subprocesses
- int process_tick = 0, update_tick = 0;
- #else
- extern int process_tick, update_tick;
- #endif
- int (*old_trap) ();
- char buf;
-
- if (rfds)
- {
- orfds = *rfds;
- *rfds = 0;
- }
- if (wfds)
- *wfds = 0;
- if (efds)
- *efds = 0;
-
- /* If we are looking only for the terminal, with no timeout,
- just read it and wait -- that's more efficient. */
- if (orfds == 1 && (!timeout || *timeout == 100000)
- && process_tick == update_tick)
- {
- if (!kbd_count)
- read_input_waiting ();
- *rfds = 1;
- return 1;
- }
-
- /* Once a second, till the timer expires, check all the flagged read
- * descriptors to see if any input is available. If there is some then
- * set the corresponding bit in the return copy of rfds.
- */
- while (1)
- {
- register int to_check, bit, fd;
-
- if (rfds)
- {
- for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++)
- {
- if (orfds & bit)
- {
- int avail = 0, status = 0;
-
- if (bit == 1)
- avail = detect_input_pending (); /* Special keyboard handler */
- else
- {
- #ifdef FIONREAD
- status = ioctl (fd, FIONREAD, &avail);
- #else /* no FIONREAD */
- /* Hoping it will return -1 if nothing available
- or 0 if all 0 chars requested are read. */
- if (proc_buffered_char[fd] >= 0)
- avail = 1;
- else
- {
- avail = read (fd, &buf, 1);
- if (avail > 0)
- proc_buffered_char[fd] = buf;
- }
- #endif /* no FIONREAD */
- }
- if (status >= 0 && avail > 0)
- {
- (*rfds) |= bit;
- ravail++;
- }
- }
- }
- }
- if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick)
- break;
- old_alarm = alarm (0);
- old_trap = (int (*)()) signal (SIGALRM, select_alarm);
- select_alarmed = 0;
- alarm (SELECT_PAUSE);
- /* Wait for a SIGALRM (or maybe a SIGTINT) */
- while (select_alarmed == 0 && *local_timeout != 0
- && process_tick == update_tick)
- {
- /* If we are interested in terminal input,
- wait by reading the terminal.
- That makes instant wakeup for terminal input at least. */
- if (orfds & 1)
- {
- read_input_waiting ();
- if (kbd_count)
- select_alarmed = 1;
- }
- else
- pause ();
- }
- (*local_timeout) -= SELECT_PAUSE;
- /* Reset the old alarm if there was one */
- alarm (0);
- signal (SIGALRM, old_trap);
- if (old_alarm != 0)
- {
- /* Reset or forge an interrupt for the original handler. */
- old_alarm -= SELECT_PAUSE;
- if (old_alarm <= 0)
- kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */
- else
- alarm (old_alarm);
- }
- if (*local_timeout == 0) /* Stop on timer being cleared */
- break;
- }
- return ravail;
- }
-
- /* Read keyboard input into the standard buffer,
- waiting for at least one character. */
-
- /* Make all keyboard buffers much bigger when using X windows. */
- #ifdef HAVE_X_WINDOWS
- #define BUFFER_SIZE_FACTOR 16
- #else
- #define BUFFER_SIZE_FACTOR 1
- #endif
-
- read_input_waiting ()
- {
- extern int kbd_count;
- extern unsigned char kbd_buffer[];
- extern unsigned char *kbd_ptr;
- int val;
-
- if (read_socket_hook)
- {
- read_alarm_should_throw = 0;
- if (! setjmp (read_alarm_throw))
- val = (*read_socket_hook) (0, kbd_buffer, 256 * BUFFER_SIZE_FACTOR);
- else
- val = -1;
- }
- else
- val = read (fileno (stdin), kbd_buffer, 1);
-
- if (val > 0)
- {
- kbd_ptr = kbd_buffer;
- kbd_count = val;
- }
- }
-
- #endif /* not HAVE_SELECT */
-
- #ifdef BSD4_1
- /* VARARGS */
- setpriority ()
- {
- return 0;
- }
-
- /*
- * Partially emulate 4.2 open call.
- * open is defined as this in 4.1.
- *
- * - added by Michael Bloom @ Citicorp/TTI
- *
- */
-
- int
- sys_open (path, oflag, mode)
- char *path;
- int oflag, mode;
- {
- if (oflag & O_CREAT)
- return creat (path, mode);
- else
- return open (path, oflag);
- }
-
- init_sigio ()
- {
- if (noninteractive)
- return;
- lmode = LINTRUP | lmode;
- ioctl (0, TIOCLSET, &lmode);
- }
-
- reset_sigio ()
- {
- if (noninteractive)
- return;
- lmode = ~LINTRUP & lmode;
- ioctl (0, TIOCLSET, &lmode);
- }
-
- request_sigio ()
- {
- sigrelse (SIGTINT);
-
- interrupts_deferred = 0;
- }
-
- unrequest_sigio ()
- {
- sighold (SIGTINT);
-
- interrupts_deferred = 1;
- }
-
- /* still inside #ifdef BSD4_1 */
- #ifdef subprocesses
-
- int sigheld; /* Mask of held signals */
-
- sigholdx (signum)
- int signum;
- {
- sigheld |= sigbit (signum);
- sighold (signum);
- }
-
- sigisheld (signum)
- int signum;
- {
- sigheld |= sigbit (signum);
- }
-
- sigunhold (signum)
- int signum;
- {
- sigheld &= ~sigbit (signum);
- sigrelse (signum);
- }
-
- sigfree () /* Free all held signals */
- {
- int i;
- for (i = 0; i < NSIG; i++)
- if (sigheld & sigbit (i))
- sigrelse (i);
- sigheld = 0;
- }
-
- sigbit (i)
- {
- return 1 << (i - 1);
- }
- #endif /* subprocesses */
- #endif /* BSD4_1 */
-
- /* POSIX signals support - DJB */
- /* Anyone with POSIX signals should have ANSI C declarations */
-
- #ifdef POSIX_SIGNALS
-
- sigset_t signal_empty_mask, signal_full_mask;
- static struct sigaction new_action, old_action;
-
- init_signals ()
- {
- #ifdef POSIX_SIGNALS
- sigemptyset (&signal_empty_mask);
- sigfillset (&signal_full_mask);
- #endif
- }
-
- typedef int (*signal_handler_t) ();
-
- signal_handler_t
- sys_signal (int signal_number, signal_handler_t action)
- {
- #ifdef DGUX
- /* This gets us restartable system calls for efficiency.
- The "else" code will works as well. */
- return (berk_signal (signal_number, action));
- #else
- sigemptyset (&new_action.sa_mask);
- new_action.sa_handler = action;
- new_action.sa_flags = NULL;
- sigaction (signal_number, &new_action, &old_action);
- return (old_action.sa_handler);
- #endif /* DGUX */
- }
-
- int
- sys_sigpause (sigset_t new_mask)
- {
- /* pause emulating berk sigpause... */
- sigsuspend (&new_mask);
- return (EINTR);
- }
-
- /* I'd like to have these guys return pointers to the mask storage in here,
- but there'd be trouble if the code was saving multiple masks. I'll be
- safe and pass the structure. It normally won't be more than 2 bytes
- anyhow. - DJB */
-
- sigset_t
- sys_sigblock (sigset_t new_mask)
- {
- sigset_t old_mask;
- sigprocmask (SIG_BLOCK, &new_mask, &old_mask);
- return (old_mask);
- }
-
- sigset_t
- sys_sigunblock (sigset_t new_mask)
- {
- sigset_t old_mask;
- sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask);
- return (old_mask);
- }
-
- sigset_t
- sys_sigsetmask (sigset_t new_mask)
- {
- sigset_t old_mask;
- sigprocmask (SIG_SETMASK, &new_mask, &old_mask);
- return (old_mask);
- }
-
- #endif /* POSIX_SIGNALS */
-
- #ifndef BSTRING
-
- void
- bzero (b, length)
- register char *b;
- register int length;
- {
- #ifdef VMS
- short zero = 0;
- long max_str = 65535;
-
- while (length > max_str) {
- (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b);
- length -= max_str;
- b += max_str;
- }
- max_str = length;
- (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b);
- #else
- while (length-- > 0)
- *b++ = 0;
- #endif /* not VMS */
- }
-
- /* Saying `void' requires a declaration, above, where bcopy is used
- and that declaration causes pain for systems where bcopy is a macro. */
- bcopy (b1, b2, length)
- register char *b1;
- register char *b2;
- register int length;
- {
- #ifdef VMS
- long max_str = 65535;
-
- while (length > max_str) {
- (void) LIB$MOVC3 (&max_str, b1, b2);
- length -= max_str;
- b1 += max_str;
- b2 += max_str;
- }
- max_str = length;
- (void) LIB$MOVC3 (&max_str, b1, b2);
- #else
- while (length-- > 0)
- *b2++ = *b1++;
- #endif /* not VMS */
- }
-
- int
- bcmp (b1, b2, length) /* This could be a macro! */
- register char *b1;
- register char *b2;
- register int length;
- {
- #ifdef VMS
- struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1};
- struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2};
-
- return STR$COMPARE (&src1, &src2);
- #else
- while (length-- > 0)
- if (*b1++ != *b2++)
- return 1;
-
- return 0;
- #endif /* not VMS */
- }
- #endif /* not BSTRING */
-
- #ifdef BSD4_1
- long random ()
- {
- return (rand ());
- }
-
- srandom (arg)
- int arg;
- {
- srand (arg);
- }
- #endif /* BSD4_1 */
-
- #ifdef HPUX
- #ifdef X11
- #define HAVE_RANDOM
- #endif
- #endif
-
- #ifdef USG
- #ifndef HAVE_RANDOM
- /*
- * The BSD random returns numbers in the range of
- * 0 to 2e31 - 1. The USG rand(3C) returns numbers in the
- * range of 0 to 2e15 - 1. This is probably not significant
- * in this usage.
- */
-
- long
- random ()
- {
- /* Arrange to return a range centered on zero. */
- return rand () - (1 << 14);
- }
-
- srandom (arg)
- int arg;
- {
- srand (arg);
- }
-
- #endif /* HAVE_RANDOM */
- #endif /* USG */
-
-
- #ifdef VMS
-
- #ifdef getenv
- /* If any place else asks for the TERM variable,
- allow it to be overridden with the EMACS_TERM variable
- before attempting to translate the logical name TERM. As a last
- resort, ask for VAX C's special idea of the TERM variable. */
- #undef getenv
- char *
- sys_getenv (name)
- char *name;
- {
- register char *val;
- static char buf[256];
- static struct dsc$descriptor_s equiv
- = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf};
- static struct dsc$descriptor_s d_name
- = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
- short eqlen;
-
- if (!strcmp (name, "TERM"))
- {
- val = (char *) getenv ("EMACS_TERM");
- if (val)
- return val;
- }
-
- d_name.dsc$w_length = strlen (name);
- d_name.dsc$a_pointer = name;
- if (lib$sys_trnlog (&d_name, &eqlen, &equiv) == 1)
- {
- char *str = (char *) xmalloc (eqlen + 1);
- bcopy (buf, str, eqlen);
- str[eqlen] = '\0';
- /* This is a storage leak, but a pain to fix. With luck,
- no one will ever notice. */
- return str;
- }
- return (char *) getenv (name);
- }
- #endif /* getenv */
-
- #ifdef abort
- /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
- to force a call on the debugger from within the image. */
- #undef abort
- sys_abort ()
- {
- reset_sys_modes ();
- LIB$SIGNAL (SS$_DEBUG);
- }
- #endif /* abort */
- #endif /* VMS */
-
- #ifdef VMS
- #ifdef LINK_CRTL_SHARE
- #ifdef SHAREABLE_LIB_BUG
- /* Variables declared noshare and initialized in shareable libraries
- cannot be shared. The VMS linker incorrectly forces you to use a private
- version which is uninitialized... If not for this "feature", we
- could use the C library definition of sys_nerr and sys_errlist. */
- int sys_nerr = 35;
- char *sys_errlist[] =
- {
- "error 0",
- "not owner",
- "no such file or directory",
- "no such process",
- "interrupted system call",
- "i/o error",
- "no such device or address",
- "argument list too long",
- "exec format error",
- "bad file number",
- "no child process",
- "no more processes",
- "not enough memory",
- "permission denied",
- "bad address",
- "block device required",
- "mount devices busy",
- "file exists",
- "cross-device link",
- "no such device",
- "not a directory",
- "is a directory",
- "invalid argument",
- "file table overflow",
- "too many open files",
- "not a typewriter",
- "text file busy",
- "file too big",
- "no space left on device",
- "illegal seek",
- "read-only file system",
- "too many links",
- "broken pipe",
- "math argument",
- "result too large",
- "I/O stream empty",
- "vax/vms specific error code nontranslatable error"
- };
- #endif /* SHAREABLE_LIB_BUG */
- #endif /* LINK_CRTL_SHARE */
- #endif /* VMS */
-
- #ifdef INTERRUPTABLE_OPEN
-
- int
- /* VARARGS 2 */
- sys_open (path, oflag, mode)
- char *path;
- int oflag, mode;
- {
- register int rtnval;
-
- while ((rtnval = open (path, oflag, mode)) == -1
- && (errno == EINTR));
- return (rtnval);
- }
-
- #endif /* INTERRUPTABLE_OPEN */
-
- #ifdef INTERRUPTABLE_CLOSE
-
- sys_close (fd)
- int fd;
- {
- register int rtnval;
-
- while ((rtnval = close (fd)) == -1
- && (errno == EINTR));
- return rtnval;
- }
-
- #endif /* INTERRUPTABLE_CLOSE */
-
- #ifdef INTERRUPTABLE_IO
-
- int
- sys_read (fildes, buf, nbyte)
- int fildes;
- char *buf;
- unsigned int nbyte;
- {
- register int rtnval;
-
- while ((rtnval = read (fildes, buf, nbyte)) == -1
- && (errno == EINTR));
- return (rtnval);
- }
-
- int
- sys_write (fildes, buf, nbyte)
- int fildes;
- char *buf;
- unsigned int nbyte;
- {
- register int rtnval;
-
- while ((rtnval = write (fildes, buf, nbyte)) == -1
- && (errno == EINTR));
- return (rtnval);
- }
-
- #endif /* INTERRUPTABLE_IO */
-
- #ifdef USG
- /*
- * All of the following are for USG.
- *
- * On USG systems the system calls are interruptable by signals
- * that the user program has elected to catch. Thus the system call
- * must be retried in these cases. To handle this without massive
- * changes in the source code, we remap the standard system call names
- * to names for our own functions in sysdep.c that do the system call
- * with retries. Actually, for portability reasons, it is good
- * programming practice, as this example shows, to limit all actual
- * system calls to a single occurance in the source. Sure, this
- * adds an extra level of function call overhead but it is almost
- * always negligible. Fred Fish, Unisoft Systems Inc.
- */
-
- char *sys_siglist[NSIG + 1] =
- {
- #ifdef AIX
- /* AIX has changed the signals a bit */
- "bogus signal", /* 0 */
- "hangup", /* 1 SIGHUP */
- "interrupt", /* 2 SIGINT */
- "quit", /* 3 SIGQUIT */
- "illegal instruction", /* 4 SIGILL */
- "trace trap", /* 5 SIGTRAP */
- "IOT instruction", /* 6 SIGIOT */
- "crash likely", /* 7 SIGDANGER */
- "floating point exception", /* 8 SIGFPE */
- "kill", /* 9 SIGKILL */
- "bus error", /* 10 SIGBUS */
- "segmentation violation", /* 11 SIGSEGV */
- "bad argument to system call", /* 12 SIGSYS */
- "write on a pipe with no one to read it", /* 13 SIGPIPE */
- "alarm clock", /* 14 SIGALRM */
- "software termination signum", /* 15 SIGTERM */
- "user defined signal 1", /* 16 SIGUSR1 */
- "user defined signal 2", /* 17 SIGUSR2 */
- "death of a child", /* 18 SIGCLD */
- "power-fail restart", /* 19 SIGPWR */
- "bogus signal", /* 20 */
- "bogus signal", /* 21 */
- "bogus signal", /* 22 */
- "bogus signal", /* 23 */
- "bogus signal", /* 24 */
- "LAN I/O interrupt", /* 25 SIGAIO */
- "PTY I/O interrupt", /* 26 SIGPTY */
- "I/O intervention required", /* 27 SIGIOINT */
- "HFT grant", /* 28 SIGGRANT */
- "HFT retract", /* 29 SIGRETRACT */
- "HFT sound done", /* 30 SIGSOUND */
- "HFT input ready", /* 31 SIGMSG */
- #else /* not AIX */
- "bogus signal", /* 0 */
- "hangup", /* 1 SIGHUP */
- "interrupt", /* 2 SIGINT */
- "quit", /* 3 SIGQUIT */
- "illegal instruction", /* 4 SIGILL */
- "trace trap", /* 5 SIGTRAP */
- "IOT instruction", /* 6 SIGIOT */
- "EMT instruction", /* 7 SIGEMT */
- "floating point exception", /* 8 SIGFPE */
- "kill", /* 9 SIGKILL */
- "bus error", /* 10 SIGBUS */
- "segmentation violation", /* 11 SIGSEGV */
- "bad argument to system call", /* 12 SIGSYS */
- "write on a pipe with no one to read it", /* 13 SIGPIPE */
- "alarm clock", /* 14 SIGALRM */
- "software termination signum", /* 15 SIGTERM */
- "user defined signal 1", /* 16 SIGUSR1 */
- "user defined signal 2", /* 17 SIGUSR2 */
- "death of a child", /* 18 SIGCLD */
- "power-fail restart", /* 19 SIGPWR */
- #endif /* not AIX */
- 0
- };
-
- /*
- * Warning, this function may not duplicate 4.2 action properly
- * under error conditions.
- */
-
- #ifndef MAXPATHLEN
- /* In 4.1, param.h fails to define this. */
- #define MAXPATHLEN 1024
- #endif
-
- #ifndef HAVE_GETWD
-
- char *
- getwd (pathname)
- char *pathname;
- {
- char *npath, *spath;
- extern char *getcwd ();
-
- spath = npath = getcwd ((char *) 0, MAXPATHLEN);
- /* On Altos 3068, getcwd can return @hostname/dir, so discard
- up to first slash. Should be harmless on other systems. */
- while (*npath && *npath != '/')
- npath++;
- strcpy (pathname, npath);
- free (spath); /* getcwd uses malloc */
- return pathname;
- }
-
- #endif /* not HAVE_GETWD */
-
- #ifndef HAVE_RENAME
-
- /*
- * Emulate rename using unlink/link. Note that this is
- * only partially correct. Also, doesn't enforce restriction
- * that files be of same type (regular->regular, dir->dir, etc).
- */
-
- rename (from, to)
- #ifdef __STDC__ /* Avoid error if system has proper ANSI prototype. */
- const char *from;
- const char *to;
- #else
- char *from;
- char *to;
- #endif
- {
- if (access (from, 0) == 0)
- {
- unlink (to);
- if (link (from, to) == 0)
- if (unlink (from) == 0)
- return (0);
- }
- return (-1);
- }
- #endif /* not HAVE_RENAME */
-
- /* VARARGS */
- setpriority ()
- {
- return (0);
- }
-
- #ifndef HAVE_VFORK
-
- /*
- * Substitute fork(2) for vfork(2) on USG flavors.
- */
-
- vfork ()
- {
- return (fork ());
- }
-
- #endif /* not HAVE_VFORK */
-
- #ifdef MISSING_UTIMES
-
- /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */
-
- utimes ()
- {
- }
- #endif
-
- #ifdef IRIS_UTIME
-
- /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the
- utimbuf structure defined anywhere but in the man page. */
-
- struct utimbuf
- {
- long actime;
- long modtime;
- };
-
- utimes (name, tvp)
- char *name;
- struct timeval tvp[];
- {
- struct utimbuf utb;
- utb.actime = tvp[0].tv_sec;
- utb.modtime = tvp[1].tv_sec;
- utime (name, &utb);
- }
- #endif /* IRIS_UTIME */
-
-
- #if 0
- #ifdef HPUX
-
- /* HPUX curses library references perror, but as far as we know
- it won't be called. Anyway this definition will do for now. */
-
- perror ()
- {
- }
-
- #endif /* HPUX */
- #endif /* 0 */
-
- #ifndef HAVE_DUP2
-
- /*
- * Emulate BSD dup2(2). First close newd if it already exists.
- * Then, attempt to dup oldd. If not successful, call dup2 recursively
- * until we are, then close the unsuccessful ones.
- */
-
- dup2 (oldd, newd)
- int oldd;
- int newd;
- {
- register int fd, ret;
-
- sys_close (newd);
-
- #ifdef F_DUPFD
- fd = fcntl (oldd, F_DUPFD, newd);
- if (fd != newd)
- error ("cant dup2 (%i,%i) : %s", oldd, newd, sys_errlist[errno]);
- #else
- fd = dup (old);
- if (fd == -1)
- return -1;
- if (fd == new)
- return new;
- ret = dup2 (old,new);
- sys_close (fd);
- return ret;
- #endif
- }
-
- #endif /* not HAVE_DUP2 */
-
- /*
- * Gettimeofday. Simulate as much as possible. Only accurate
- * to nearest second. Emacs doesn't use tzp so ignore it for now.
- * Only needed when subprocesses are defined.
- */
-
- #ifdef subprocesses
- #ifndef HAVE_GETTIMEOFDAY
- #ifdef HAVE_TIMEVAL
-
- /* ARGSUSED */
- gettimeofday (tp, tzp)
- struct timeval *tp;
- struct timezone *tzp;
- {
- extern long time ();
-
- tp->tv_sec = time ((long *)0);
- tp->tv_usec = 0;
- }
-
- #endif
- #endif
- #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
-
- /*
- * This function will go away as soon as all the stubs fixed. (fnf)
- */
-
- croak (badfunc)
- char *badfunc;
- {
- printf ("%s not yet implemented\r\n", badfunc);
- reset_sys_modes ();
- exit (1);
- }
-
- #endif /* USG */
-
- #ifdef DGUX
-
- char *sys_siglist[NSIG + 1] =
- {
- "null signal", /* 0 SIGNULL */
- "hangup", /* 1 SIGHUP */
- "interrupt", /* 2 SIGINT */
- "quit", /* 3 SIGQUIT */
- "illegal instruction", /* 4 SIGILL */
- "trace trap", /* 5 SIGTRAP */
- "abort termination", /* 6 SIGABRT */
- "SIGEMT", /* 7 SIGEMT */
- "floating point exception", /* 8 SIGFPE */
- "kill", /* 9 SIGKILL */
- "bus error", /* 10 SIGBUS */
- "segmentation violation", /* 11 SIGSEGV */
- "bad argument to system call", /* 12 SIGSYS */
- "write on a pipe with no reader", /* 13 SIGPIPE */
- "alarm clock", /* 14 SIGALRM */
- "software termination signal", /* 15 SIGTERM */
- "user defined signal 1", /* 16 SIGUSR1 */
- "user defined signal 2", /* 17 SIGUSR2 */
- "child stopped or terminated", /* 18 SIGCLD */
- "power-fail restart", /* 19 SIGPWR */
- "window size changed", /* 20 SIGWINCH */
- "undefined", /* 21 */
- "pollable event occured", /* 22 SIGPOLL */
- "sendable stop signal not from tty", /* 23 SIGSTOP */
- "stop signal from tty", /* 24 SIGSTP */
- "continue a stopped process", /* 25 SIGCONT */
- "attempted background tty read", /* 26 SIGTTIN */
- "attempted background tty write", /* 27 SIGTTOU */
- "undefined", /* 28 */
- "undefined", /* 29 */
- "undefined", /* 30 */
- "undefined", /* 31 */
- "undefined", /* 32 */
- "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
- "I/O is possible", /* 34 SIGIO */
- "exceeded cpu time limit", /* 35 SIGXCPU */
- "exceeded file size limit", /* 36 SIGXFSZ */
- "virtual time alarm", /* 37 SIGVTALRM */
- "profiling time alarm", /* 38 SIGPROF */
- "undefined", /* 39 */
- "file record locks revoked", /* 40 SIGLOST */
- "undefined", /* 41 */
- "undefined", /* 42 */
- "undefined", /* 43 */
- "undefined", /* 44 */
- "undefined", /* 45 */
- "undefined", /* 46 */
- "undefined", /* 47 */
- "undefined", /* 48 */
- "undefined", /* 49 */
- "undefined", /* 50 */
- "undefined", /* 51 */
- "undefined", /* 52 */
- "undefined", /* 53 */
- "undefined", /* 54 */
- "undefined", /* 55 */
- "undefined", /* 56 */
- "undefined", /* 57 */
- "undefined", /* 58 */
- "undefined", /* 59 */
- "undefined", /* 60 */
- "undefined", /* 61 */
- "undefined", /* 62 */
- "undefined", /* 63 */
- "notification message in mess. queue", /* 64 SIGDGNOTIFY */
- 0
- };
-
- #endif /* DGUX */
-
- /* Directory routines for systems that don't have them. */
-
- #ifdef SYSV_SYSTEM_DIR
-
- #include <dirent.h>
-
- #ifndef HAVE_CLOSEDIR
- int
- closedir (dirp)
- register DIR *dirp; /* stream from opendir */
- {
- sys_close (dirp->dd_fd);
- free ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */
- free ((char *) dirp);
- }
- #endif /* not HAVE_CLOSEDIR */
-
- #endif /* SYSV_SYSTEM_DIR */
-
- #ifdef NONSYSTEM_DIR_LIBRARY
-
- DIR *
- opendir (filename)
- char *filename; /* name of directory */
- {
- register DIR *dirp; /* -> malloc'ed storage */
- register int fd; /* file descriptor for read */
- struct stat sbuf; /* result of fstat() */
-
- fd = sys_open (filename, 0);
- if (fd < 0)
- return 0;
-
- if (fstat (fd, &sbuf) < 0
- || (sbuf.st_mode & S_IFMT) != S_IFDIR
- || (dirp = (DIR *) malloc (sizeof (DIR))) == 0)
- {
- sys_close (fd);
- return 0; /* bad luck today */
- }
-
- dirp->dd_fd = fd;
- dirp->dd_loc = dirp->dd_size = 0; /* refill needed */
-
- return dirp;
- }
-
- void
- closedir (dirp)
- register DIR *dirp; /* stream from opendir() */
- {
- sys_close (dirp->dd_fd);
- free ((char *) dirp);
- }
-
-
- #ifndef VMS
- #define DIRSIZ 14
- struct olddir
- {
- ino_t od_ino; /* inode */
- char od_name[DIRSIZ]; /* filename */
- };
- #endif /* not VMS */
-
- struct direct dir_static; /* simulated directory contents */
-
- /* ARGUSED */
- struct direct *
- readdir (dirp)
- register DIR *dirp; /* stream from opendir() */
- {
- #ifndef VMS
- register struct olddir *dp; /* -> directory data */
- #else /* VMS */
- register struct dir$_name *dp; /* -> directory data */
- register struct dir$_version *dv; /* -> version data */
- #endif /* VMS */
-
- for (; ;)
- {
- if (dirp->dd_loc >= dirp->dd_size)
- dirp->dd_loc = dirp->dd_size = 0;
-
- if (dirp->dd_size == 0 /* refill buffer */
- && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0)
- return 0;
-
- #ifndef VMS
- dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc];
- dirp->dd_loc += sizeof (struct olddir);
-
- if (dp->od_ino != 0) /* not deleted entry */
- {
- dir_static.d_ino = dp->od_ino;
- strncpy (dir_static.d_name, dp->od_name, DIRSIZ);
- dir_static.d_name[DIRSIZ] = '\0';
- dir_static.d_namlen = strlen (dir_static.d_name);
- dir_static.d_reclen = sizeof (struct direct)
- - MAXNAMLEN + 3
- + dir_static.d_namlen - dir_static.d_namlen % 4;
- return &dir_static; /* -> simulated structure */
- }
- #else /* VMS */
- dp = (struct dir$_name *) dirp->dd_buf;
- if (dirp->dd_loc == 0)
- dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1
- : dp->dir$b_namecount;
- dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc];
- dir_static.d_ino = dv->dir$w_fid_num;
- dir_static.d_namlen = dp->dir$b_namecount;
- dir_static.d_reclen = sizeof (struct direct)
- - MAXNAMLEN + 3
- + dir_static.d_namlen - dir_static.d_namlen % 4;
- strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount);
- dir_static.d_name[dir_static.d_namlen] = '\0';
- dirp->dd_loc = dirp->dd_size; /* only one record at a time */
- return &dir_static;
- #endif /* VMS */
- }
- }
-
- #ifdef VMS
- /* readdirver is just like readdir except it returns all versions of a file
- as separate entries. */
-
- /* ARGUSED */
- struct direct *
- readdirver (dirp)
- register DIR *dirp; /* stream from opendir() */
- {
- register struct dir$_name *dp; /* -> directory data */
- register struct dir$_version *dv; /* -> version data */
-
- if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name))
- dirp->dd_loc = dirp->dd_size = 0;
-
- if (dirp->dd_size == 0 /* refill buffer */
- && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0)
- return 0;
-
- dp = (struct dir$_name *) dirp->dd_buf;
- if (dirp->dd_loc == 0)
- dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1
- : dp->dir$b_namecount;
- dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc];
- strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount);
- sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version);
- dir_static.d_namlen = strlen (dir_static.d_name);
- dir_static.d_ino = dv->dir$w_fid_num;
- dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3
- + dir_static.d_namlen - dir_static.d_namlen % 4;
- dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name);
- return &dir_static;
- }
-
- #endif /* VMS */
-
- #endif /* NONSYSTEM_DIR_LIBRARY */
-
- /* Functions for VMS */
- #ifdef VMS
- #include "vms-pwd.h"
- #include <acldef.h>
- #include <chpdef.h>
- #include <jpidef.h>
-
- /* Return as a string the VMS error string pertaining to STATUS.
- Reuses the same static buffer each time it is called. */
-
- char *
- vmserrstr (status)
- int status; /* VMS status code */
- {
- int bufadr[2];
- short len;
- static char buf[257];
-
- bufadr[0] = sizeof buf - 1;
- bufadr[1] = (int) buf;
- if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1))
- return "untranslatable VMS error status";
- buf[len] = '\0';
- return buf;
- }
-
- #ifdef access
- #undef access
-
- /* The following is necessary because 'access' emulation by VMS C (2.0) does
- * not work correctly. (It also doesn't work well in version 2.3.)
- */
-
- #ifdef VMS4_4
-
- #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
- { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
-
- typedef union {
- struct {
- unsigned short s_buflen;
- unsigned short s_code;
- char *s_bufadr;
- unsigned short *s_retlenadr;
- } s;
- int end;
- } item;
-
- #define ITEMSETUP(CODE,VAR,RETLEN) \
- itemlst[cnt].s.s_buflen = sizeof (VAR); \
- itemlst[cnt].s.s_code = CODE; \
- itemlst[cnt].s.s_bufadr = (char *) &VAR; \
- itemlst[cnt++].s.s_retlenadr = (unsigned short *) &RETLEN
-
- #define R_OK 4 /* test for read permission */
- #define W_OK 2 /* test for write permission */
- #define X_OK 1 /* test for execute (search) permission */
- #define F_OK 0 /* test for presence of file */
-
- int
- sys_access (path, mode)
- char *path;
- int mode;
- {
- static char *user = NULL;
- char dir_fn[512];
-
- /* translate possible directory spec into .DIR file name, so brain-dead
- * access() can treat the directory like a file. */
- if (directory_file_name (path, dir_fn))
- path = dir_fn;
-
- if (mode == F_OK)
- return access (path, mode);
- if (user == NULL && (user = (char *) getenv ("USER")) == NULL)
- return -1;
- {
- int stat;
- int flags;
- int acces;
- int dummy;
- int cnt;
- int prvmask[2];
- item itemlst[8];
- struct FAB fab;
- struct XABPRO xab;
- char *aclbuf;
-
- flags = 0;
- acces = 0;
- if ((mode & X_OK) && ((stat = access(path, mode)) < 0 || mode == X_OK))
- return stat;
- if (mode & R_OK)
- flags |= CHP$M_READ;
- if (mode & W_OK)
- flags |= CHP$M_WRITE;
-
- acces = flags;
-
- /* Find privilege bits */
- stat = sys$setprv (0, 0, 0, prvmask);
-
- /* Open the file, and find the particulars. */
- fab = cc$rms_fab;
- fab.fab$b_fac = FAB$M_GET;
- fab.fab$l_fna = path;
- fab.fab$b_fns = strlen (path);
- fab.fab$l_xab = (char*) &xab;
- xab = cc$rms_xabpro;
- xab.xab$l_aclbuf = (char*) alloca(60); /* Use 60 initially */;
- xab.xab$w_aclsiz = 60;
- stat = sys$open (&fab, 0, 0);
- if (! (stat & 1))
- return -1;
- /* If ACL was not empty (2512) and error occurred, then deny access. */
- if ((xab.xab$l_aclsts != 2512) && (! (xab.xab$l_aclsts & 1)))
- return -1;
- sys$close (&fab, 0, 0);
-
- /* See if we allocated enough space for the ACL. If not, create a larger
- buffer (now that we now know the actual size), and do it again. */
-
- if(xab.xab$w_acllen > xab.xab$w_aclsiz){
- xab.xab$l_aclbuf = (char *) alloca(xab.xab$w_acllen);
- xab.xab$w_aclsiz = xab.xab$w_acllen;
- xab.xab$l_aclctx = 0;
- stat = sys$open (&fab, 0, 0);
- if (! (stat & 1))
- return -1;
- sys$close (&fab, 0, 0);
- };
- cnt=0;
- ITEMSETUP(CHP$_OWNER,xab.xab$l_uic,dummy);
- ITEMSETUP(CHP$_PROT,xab.xab$w_pro,dummy);
- ITEMSETUP(CHP$_ACCESS,acces,dummy);
- ITEMSETUP(CHP$_FLAGS,flags,dummy);
-
- if (xab.xab$w_acllen != 0)
- {
- itemlst[cnt].s.s_buflen = xab.xab$w_acllen;
- itemlst[cnt].s.s_code = CHP$_ACL;
- itemlst[cnt].s.s_bufadr = xab.xab$l_aclbuf;
- itemlst[cnt++].s.s_retlenadr = (unsigned short *) &dummy;
- };
-
- ITEMSETUP(CHP$_PRIV,prvmask,dummy);
- /* ITEMSETUP(CHP$_PRIVUSED,pused,pusedl); For diagnostic purposes only */
- itemlst[cnt].s.s_buflen = 0;
- itemlst[cnt].s.s_code = CHP$_END;
-
- /* SYS$CHECK_ACCESS can get privileges wrong. SYS$CHKPRO will not. */
- stat = SYS$CHKPRO(itemlst);
- return stat == SS$_NORMAL ? 0 : -1;
- }
- }
-
- #else /* not VMS4_4 */
-
- #include <prvdef.h>
- #define ACE$M_WRITE 2
- #define ACE$C_KEYID 1
-
- static unsigned short memid, grpid;
- static unsigned int uic;
-
- /* Called from init_sys_modes, so it happens not very often
- but at least each time Emacs is loaded. */
- sys_access_reinit ()
- {
- uic = 0;
- }
-
- int
- sys_access (filename, type)
- char * filename;
- int type;
- {
- struct FAB fab;
- struct XABPRO xab;
- int status, size, i, typecode, acl_controlled;
- unsigned int *aclptr, *aclend, aclbuf[60];
- union prvdef prvmask;
-
- /* Get UIC and GRP values for protection checking. */
- if (uic == 0)
- {
- status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0);
- if (! (status & 1))
- return -1;
- memid = uic & 0xFFFF;
- grpid = uic >> 16;
- }
-
- if (type != 2) /* not checking write access */
- return access (filename, type);
-
- /* Check write protection. */
-
- #define CHECKPRIV(bit) (prvmask.bit)
- #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
-
- /* Find privilege bits */
- status = sys$setprv (0, 0, 0, prvmask);
- if (! (status & 1))
- error ("Unable to find privileges: %s", vmserrstr (status));
- if (CHECKPRIV (PRV$V_BYPASS))
- return 0; /* BYPASS enabled */
- fab = cc$rms_fab;
- fab.fab$b_fac = FAB$M_GET;
- fab.fab$l_fna = filename;
- fab.fab$b_fns = strlen (filename);
- fab.fab$l_xab = &xab;
- xab = cc$rms_xabpro;
- xab.xab$l_aclbuf = aclbuf;
- xab.xab$w_aclsiz = sizeof (aclbuf);
- status = sys$open (&fab, 0, 0);
- if (! (status & 1))
- return -1;
- sys$close (&fab, 0, 0);
- /* Check system access */
- if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS))
- return 0;
- /* Check ACL entries, if any */
- acl_controlled = 0;
- if (xab.xab$w_acllen > 0)
- {
- aclptr = aclbuf;
- aclend = &aclbuf[xab.xab$w_acllen / 4];
- while (*aclptr && aclptr < aclend)
- {
- size = (*aclptr & 0xff) / 4;
- typecode = (*aclptr >> 8) & 0xff;
- if (typecode == ACE$C_KEYID)
- for (i = size - 1; i > 1; i--)
- if (aclptr[i] == uic)
- {
- acl_controlled = 1;
- if (aclptr[1] & ACE$M_WRITE)
- return 0; /* Write access through ACL */
- }
- aclptr = &aclptr[size];
- }
- if (acl_controlled) /* ACL specified, prohibits write access */
- return -1;
- }
- /* No ACL entries specified, check normal protection */
- if (WRITEABLE (XAB$V_WLD)) /* World writeable */
- return 0;
- if (WRITEABLE (XAB$V_GRP) &&
- (unsigned short) (xab.xab$l_uic >> 16) == grpid)
- return 0; /* Group writeable */
- if (WRITEABLE (XAB$V_OWN) &&
- (xab.xab$l_uic & 0xFFFF) == memid)
- return 0; /* Owner writeable */
-
- return -1; /* Not writeable */
- }
- #endif /* not VMS4_4 */
- #endif /* access */
-
- static char vtbuf[NAM$C_MAXRSS+1];
-
- /* translate a vms file spec to a unix path */
- char *
- sys_translate_vms (vfile)
- char * vfile;
- {
- char * p;
- char * targ;
-
- if (!vfile)
- return 0;
-
- targ = vtbuf;
-
- /* leading device or logical name is a root directory */
- if (p = strchr (vfile, ':'))
- {
- *targ++ = '/';
- while (vfile < p)
- *targ++ = *vfile++;
- vfile++;
- *targ++ = '/';
- }
- p = vfile;
- if (*p == '[' || *p == '<')
- {
- while (*++vfile != *p + 2)
- switch (*vfile)
- {
- case '.':
- if (vfile[-1] == *p)
- *targ++ = '.';
- *targ++ = '/';
- break;
-
- case '-':
- *targ++ = '.';
- *targ++ = '.';
- break;
-
- default:
- *targ++ = *vfile;
- break;
- }
- vfile++;
- *targ++ = '/';
- }
- while (*vfile)
- *targ++ = *vfile++;
-
- return vtbuf;
- }
-
- static char utbuf[NAM$C_MAXRSS+1];
-
- /* translate a unix path to a VMS file spec */
- char *
- sys_translate_unix (ufile)
- char * ufile;
- {
- int slash_seen = 0;
- char *p;
- char * targ;
-
- if (!ufile)
- return 0;
-
- targ = utbuf;
-
- if (*ufile == '/')
- {
- ufile++;
- }
-
- while (*ufile)
- {
- switch (*ufile)
- {
- case '/':
- if (slash_seen)
- if (index (&ufile[1], '/'))
- *targ++ = '.';
- else
- *targ++ = ']';
- else
- {
- *targ++ = ':';
- if (index (&ufile[1], '/'))
- *targ++ = '[';
- slash_seen = 1;
- }
- break;
-
- case '.':
- if (strncmp (ufile, "./", 2) == 0)
- {
- if (!slash_seen)
- {
- *targ++ = '[';
- slash_seen = 1;
- }
- ufile++; /* skip the dot */
- if (index (&ufile[1], '/'))
- *targ++ = '.';
- else
- *targ++ = ']';
- }
- else if (strncmp (ufile, "../", 3) == 0)
- {
- if (!slash_seen)
- {
- *targ++ = '[';
- slash_seen = 1;
- }
- *targ++ = '-';
- ufile += 2; /* skip the dots */
- if (index (&ufile[1], '/'))
- *targ++ = '.';
- else
- *targ++ = ']';
- }
- else
- *targ++ = *ufile;
- break;
-
- default:
- *targ++ = *ufile;
- break;
- }
- ufile++;
- }
- *targ = '\0';
-
- return utbuf;
- }
-
- char *
- getwd (pathname)
- char *pathname;
- {
- char *ptr;
- strcpy (pathname, egetenv ("PATH"));
-
- ptr = pathname;
- while (*ptr)
- {
- if ('a' <= *ptr && *ptr <= 'z')
- *ptr -= 040;
- ptr++;
- }
- return pathname;
- }
-
- getppid ()
- {
- long item_code = JPI$_OWNER;
- unsigned long parent_id;
- int status;
-
- if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
- return parent_id;
- }
-
- #undef getuid
- unsigned
- sys_getuid ()
- {
- return (getgid () << 16) | getuid ();
- }
-
- int
- sys_read (fildes, buf, nbyte)
- int fildes;
- char *buf;
- unsigned int nbyte;
- {
- return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE));
- }
-
- #if 0
- int
- sys_write (fildes, buf, nbyte)
- int fildes;
- char *buf;
- unsigned int nbyte;
- {
- register int nwrote, rtnval = 0;
-
- while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) {
- nbyte -= nwrote;
- buf += nwrote;
- rtnval += nwrote;
- }
- if (nwrote < 0)
- return rtnval ? rtnval : -1;
- if ((nwrote = write (fildes, buf, nbyte)) < 0)
- return rtnval ? rtnval : -1;
- return (rtnval + nwrote);
- }
- #endif /* 0 */
-
- /*
- * VAX/VMS VAX C RTL really loses. It insists that records
- * end with a newline (carriage return) character, and if they
- * don't it adds one (nice of it isn't it!)
- *
- * Thus we do this stupidity below.
- */
-
- int
- sys_write (fildes, buf, nbytes)
- int fildes;
- char *buf;
- unsigned int nbytes;
- {
- register char *p;
- register char *e;
- int sum = 0;
- struct stat st;
-
- fstat (fildes, &st);
- p = buf;
- while (nbytes > 0)
- {
- int len, retval;
-
- /* Handle fixed-length files with carriage control. */
- if (st.st_fab_rfm == FAB$C_FIX
- && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0))
- {
- len = st.st_fab_mrs;
- retval = write (fildes, p, min (len, nbytes));
- if (retval != len)
- return -1;
- retval++; /* This skips the implied carriage control */
- }
- else
- {
- e = p + min (MAXIOSIZE, nbytes) - 1;
- while (*e != '\n' && e > p) e--;
- if (p == e) /* Ok.. so here we add a newline... sigh. */
- e = p + min (MAXIOSIZE, nbytes) - 1;
- len = e + 1 - p;
- retval = write (fildes, p, len);
- if (retval != len)
- return -1;
- }
- p += retval;
- sum += retval;
- nbytes -= retval;
- }
- return sum;
- }
-
- /* Create file NEW copying its attributes from file OLD. If
- OLD is 0 or does not exist, create based on the value of
- vms_stmlf_recfm. */
-
- /* Protection value the file should ultimately have.
- Set by create_copy_attrs, and use by rename_sansversions. */
- static unsigned short int fab_final_pro;
-
- int
- creat_copy_attrs (old, new)
- char *old, *new;
- {
- struct FAB fab = cc$rms_fab;
- struct XABPRO xabpro;
- char aclbuf[256]; /* Choice of size is arbitrary. See below. */
- extern int vms_stmlf_recfm;
-
- if (old)
- {
- fab.fab$b_fac = FAB$M_GET;
- fab.fab$l_fna = old;
- fab.fab$b_fns = strlen (old);
- fab.fab$l_xab = (char *) &xabpro;
- xabpro = cc$rms_xabpro;
- xabpro.xab$l_aclbuf = aclbuf;
- xabpro.xab$w_aclsiz = sizeof aclbuf;
- /* Call $OPEN to fill in the fab & xabpro fields. */
- if (sys$open (&fab, 0, 0) & 1)
- {
- sys$close (&fab, 0, 0);
- fab.fab$l_alq = 0; /* zero the allocation quantity */
- if (xabpro.xab$w_acllen > 0)
- {
- if (xabpro.xab$w_acllen > sizeof aclbuf)
- /* If the acl buffer was too short, redo open with longer one.
- Wouldn't need to do this if there were some system imposed
- limit on the size of an ACL, but I can't find any such. */
- {
- xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen);
- xabpro.xab$w_aclsiz = xabpro.xab$w_acllen;
- if (sys$open (&fab, 0, 0) & 1)
- sys$close (&fab, 0, 0);
- else
- old = 0;
- }
- }
- else
- xabpro.xab$l_aclbuf = 0;
- }
- else
- old = 0;
- }
- fab.fab$l_fna = new;
- fab.fab$b_fns = strlen (new);
- if (!old)
- {
- fab.fab$l_xab = 0;
- fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR;
- fab.fab$b_rat = FAB$M_CR;
- }
- /* Set the file protections such that we will be able to manipulate
- this file. Once we are done writing and renaming it, we will set
- the protections back. */
- if (old)
- fab_final_pro = xabpro.xab$w_pro;
- else
- sys$setdfprot (0, &fab_final_pro);
- xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */
- /* Create the new file with either default attrs or attrs copied
- from old file. */
- if (!(SYS$CREATE (&fab, 0, 0) & 1))
- return -1;
- sys$close (&fab, 0, 0);
- /* As this is a "replacement" for creat, return a file descriptor
- opened for writing. */
- return open (new, O_WRONLY);
- }
-
- #ifdef creat
- #undef creat
- #include <varargs.h>
- #ifdef __GNUC__
- #ifndef va_count
- #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
- #endif
- #endif
-
- sys_creat (va_alist)
- va_dcl
- {
- va_list list_incrementor;
- char *name;
- int mode;
- int rfd; /* related file descriptor */
- int fd; /* Our new file descriptor */
- int count;
- struct stat st_buf;
- char rfm[12];
- char rat[15];
- char mrs[13];
- char fsz[13];
- extern int vms_stmlf_recfm;
-
- va_count (count);
- va_start (list_incrementor);
- name = va_arg (list_incrementor, char *);
- mode = va_arg (list_incrementor, int);
- if (count > 2)
- rfd = va_arg (list_incrementor, int);
- va_end (list_incrementor);
- if (count > 2)
- {
- /* Use information from the related file descriptor to set record
- format of the newly created file. */
- fstat (rfd, &st_buf);
- switch (st_buf.st_fab_rfm)
- {
- case FAB$C_FIX:
- strcpy (rfm, "rfm = fix");
- sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs);
- strcpy (rat, "rat = ");
- if (st_buf.st_fab_rat & FAB$M_CR)
- strcat (rat, "cr");
- else if (st_buf.st_fab_rat & FAB$M_FTN)
- strcat (rat, "ftn");
- else if (st_buf.st_fab_rat & FAB$M_PRN)
- strcat (rat, "prn");
- if (st_buf.st_fab_rat & FAB$M_BLK)
- if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN))
- strcat (rat, ", blk");
- else
- strcat (rat, "blk");
- return creat (name, 0, rfm, rat, mrs);
-
- case FAB$C_VFC:
- strcpy (rfm, "rfm = vfc");
- sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz);
- strcpy (rat, "rat = ");
- if (st_buf.st_fab_rat & FAB$M_CR)
- strcat (rat, "cr");
- else if (st_buf.st_fab_rat & FAB$M_FTN)
- strcat (rat, "ftn");
- else if (st_buf.st_fab_rat & FAB$M_PRN)
- strcat (rat, "prn");
- if (st_buf.st_fab_rat & FAB$M_BLK)
- if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN))
- strcat (rat, ", blk");
- else
- strcat (rat, "blk");
- return creat (name, 0, rfm, rat, fsz);
-
- case FAB$C_STM:
- strcpy (rfm, "rfm = stm");
- break;
-
- case FAB$C_STMCR:
- strcpy (rfm, "rfm = stmcr");
- break;
-
- case FAB$C_STMLF:
- strcpy (rfm, "rfm = stmlf");
- break;
-
- case FAB$C_UDF:
- strcpy (rfm, "rfm = udf");
- break;
-
- case FAB$C_VAR:
- strcpy (rfm, "rfm = var");
- break;
- }
- strcpy (rat, "rat = ");
- if (st_buf.st_fab_rat & FAB$M_CR)
- strcat (rat, "cr");
- else if (st_buf.st_fab_rat & FAB$M_FTN)
- strcat (rat, "ftn");
- else if (st_buf.st_fab_rat & FAB$M_PRN)
- strcat (rat, "prn");
- if (st_buf.st_fab_rat & FAB$M_BLK)
- if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN))
- strcat (rat, ", blk");
- else
- strcat (rat, "blk");
- }
- else
- {
- strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var");
- strcpy (rat, "rat=cr");
- }
- /* Until the VAX C RTL fixes the many bugs with modes, always use
- mode 0 to get the user's default protection. */
- fd = creat (name, 0, rfm, rat);
- if (fd < 0 && errno == EEXIST)
- {
- if (unlink (name) < 0)
- report_file_error ("delete", build_string (name));
- fd = creat (name, 0, rfm, rat);
- }
- return fd;
- }
- #endif /* creat */
-
- /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
- sys_fwrite (ptr, size, num, fp)
- register char * ptr;
- FILE * fp;
- {
- register int tot = num * size;
-
- while (tot--)
- fputc (*ptr++, fp);
- }
-
- /*
- * The VMS C library routine creat() actually creates a new version of an
- * existing file rather than truncating the old version. There are times
- * when this is not the desired behavior, for instance, when writing an
- * auto save file (you only want one version), or when you don't have
- * write permission in the directory containing the file (but the file
- * itself is writable). Hence this routine, which is equivalent to
- * "close (creat (fn, 0));" on Unix if fn already exists.
- */
- int
- vms_truncate (fn)
- char *fn;
- {
- struct FAB xfab = cc$rms_fab;
- struct RAB xrab = cc$rms_rab;
- int status;
-
- xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */
- xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */
- xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */
- xfab.fab$l_fna = fn;
- xfab.fab$b_fns = strlen (fn);
- xfab.fab$l_dna = ";0"; /* default to latest version of the file */
- xfab.fab$b_dns = 2;
- xrab.rab$l_fab = &xfab;
-
- /* This gibberish opens the file, positions to the first record, and
- deletes all records from there until the end of file. */
- if ((sys$open (&xfab) & 01) == 01)
- {
- if ((sys$connect (&xrab) & 01) == 01 &&
- (sys$find (&xrab) & 01) == 01 &&
- (sys$truncate (&xrab) & 01) == 01)
- status = 0;
- else
- status = -1;
- }
- else
- status = -1;
- sys$close (&xfab);
- return status;
- }
-
- /* Define this symbol to actually read SYSUAF.DAT. This requires either
- SYSPRV or a readable SYSUAF.DAT. */
-
- #ifdef READ_SYSUAF
- /*
- * getuaf.c
- *
- * Routine to read the VMS User Authorization File and return
- * a specific user's record.
- */
-
- static struct UAF retuaf;
-
- struct UAF *
- get_uaf_name (uname)
- char * uname;
- {
- register status;
- struct FAB uaf_fab;
- struct RAB uaf_rab;
-
- uaf_fab = cc$rms_fab;
- uaf_rab = cc$rms_rab;
- /* initialize fab fields */
- uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT";
- uaf_fab.fab$b_fns = 21;
- uaf_fab.fab$b_fac = FAB$M_GET;
- uaf_fab.fab$b_org = FAB$C_IDX;
- uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL;
- /* initialize rab fields */
- uaf_rab.rab$l_fab = &uaf_fab;
- /* open the User Authorization File */
- status = sys$open (&uaf_fab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- status = sys$connect (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- /* read the requested record - index is in uname */
- uaf_rab.rab$l_kbf = uname;
- uaf_rab.rab$b_ksz = strlen (uname);
- uaf_rab.rab$b_rac = RAB$C_KEY;
- uaf_rab.rab$l_ubf = (char *)&retuaf;
- uaf_rab.rab$w_usz = sizeof retuaf;
- status = sys$get (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- /* close the User Authorization File */
- status = sys$disconnect (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- status = sys$close (&uaf_fab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- return &retuaf;
- }
-
- struct UAF *
- get_uaf_uic (uic)
- unsigned long uic;
- {
- register status;
- struct FAB uaf_fab;
- struct RAB uaf_rab;
-
- uaf_fab = cc$rms_fab;
- uaf_rab = cc$rms_rab;
- /* initialize fab fields */
- uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT";
- uaf_fab.fab$b_fns = 21;
- uaf_fab.fab$b_fac = FAB$M_GET;
- uaf_fab.fab$b_org = FAB$C_IDX;
- uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL;
- /* initialize rab fields */
- uaf_rab.rab$l_fab = &uaf_fab;
- /* open the User Authorization File */
- status = sys$open (&uaf_fab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- status = sys$connect (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- /* read the requested record - index is in uic */
- uaf_rab.rab$b_krf = 1; /* 1st alternate key */
- uaf_rab.rab$l_kbf = (char *) &uic;
- uaf_rab.rab$b_ksz = sizeof uic;
- uaf_rab.rab$b_rac = RAB$C_KEY;
- uaf_rab.rab$l_ubf = (char *)&retuaf;
- uaf_rab.rab$w_usz = sizeof retuaf;
- status = sys$get (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- /* close the User Authorization File */
- status = sys$disconnect (&uaf_rab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- status = sys$close (&uaf_fab);
- if (!(status&1))
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return 0;
- }
- return &retuaf;
- }
-
- static struct passwd retpw;
-
- struct passwd *
- cnv_uaf_pw (up)
- struct UAF * up;
- {
- char * ptr;
-
- /* copy these out first because if the username is 32 chars, the next
- section will overwrite the first byte of the UIC */
- retpw.pw_uid = up->uaf$w_mem;
- retpw.pw_gid = up->uaf$w_grp;
-
- /* I suppose this is not the best sytle, to possibly overwrite one
- byte beyond the end of the field, but what the heck... */
- ptr = &up->uaf$t_username[UAF$S_USERNAME];
- while (ptr[-1] == ' ')
- ptr--;
- *ptr = '\0';
- strcpy (retpw.pw_name, up->uaf$t_username);
-
- /* the rest of these are counted ascii strings */
- strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]);
- retpw.pw_gecos[up->uaf$t_owner[0]] = '\0';
- strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]);
- retpw.pw_dir[up->uaf$t_defdev[0]] = '\0';
- strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]);
- retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0';
- strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]);
- retpw.pw_shell[up->uaf$t_defcli[0]] = '\0';
-
- return &retpw;
- }
- #else /* not READ_SYSUAF */
- static struct passwd retpw;
- #endif /* not READ_SYSUAF */
-
- struct passwd *
- getpwnam (name)
- char * name;
- {
- #ifdef READ_SYSUAF
- struct UAF *up;
- #else
- char * user;
- char * dir;
- unsigned char * full;
- #endif /* READ_SYSUAF */
- char *ptr = name;
-
- while (*ptr)
- {
- if ('a' <= *ptr && *ptr <= 'z')
- *ptr -= 040;
- ptr++;
- }
- #ifdef READ_SYSUAF
- if (!(up = get_uaf_name (name)))
- return 0;
- return cnv_uaf_pw (up);
- #else
- if (strcmp (name, getenv ("USER")) == 0)
- {
- retpw.pw_uid = getuid ();
- retpw.pw_gid = getgid ();
- strcpy (retpw.pw_name, name);
- if (full = (unsigned char*) egetenv ("FULLNAME"))
- strcpy (retpw.pw_gecos, full);
- else
- *retpw.pw_gecos = '\0';
- strcpy (retpw.pw_dir, egetenv ("HOME"));
- *retpw.pw_shell = '\0';
- return &retpw;
- }
- else
- return 0;
- #endif /* not READ_SYSUAF */
- }
-
- struct passwd *
- getpwuid (uid)
- unsigned long uid;
- {
- #ifdef READ_SYSUAF
- struct UAF * up;
-
- if (!(up = get_uaf_uic (uid)))
- return 0;
- return cnv_uaf_pw (up);
- #else
- if (uid == sys_getuid ())
- return getpwnam (egetenv ("USER"));
- else
- return 0;
- #endif /* not READ_SYSUAF */
- }
-
- /* return total address space available to the current process. This is
- the sum of the current p0 size, p1 size and free page table entries
- available. */
- vlimit ()
- {
- int item_code;
- unsigned long free_pages;
- unsigned long frep0va;
- unsigned long frep1va;
- register status;
-
- item_code = JPI$_FREPTECNT;
- if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
- free_pages *= 512;
-
- item_code = JPI$_FREP0VA;
- if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
- item_code = JPI$_FREP1VA;
- if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
-
- return free_pages + frep0va + (0x7fffffff - frep1va);
- }
-
- define_logical_name (varname, string)
- char *varname;
- char *string;
- {
- struct dsc$descriptor_s strdsc =
- {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string};
- struct dsc$descriptor_s envdsc =
- {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname};
- struct dsc$descriptor_s lnmdsc =
- {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"};
-
- return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0);
- }
-
- delete_logical_name (varname)
- char *varname;
- {
- struct dsc$descriptor_s envdsc =
- {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname};
- struct dsc$descriptor_s lnmdsc =
- {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"};
-
- return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc);
- }
-
- ulimit ()
- {}
-
- setpriority ()
- {}
-
- setpgrp ()
- {}
-
- execvp ()
- {
- error ("execvp system call not implemented");
- }
-
- int
- rename (from, to)
- char *from, *to;
- {
- int status;
- struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab;
- struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam;
- char from_esn[NAM$C_MAXRSS];
- char to_esn[NAM$C_MAXRSS];
-
- from_fab.fab$l_fna = from;
- from_fab.fab$b_fns = strlen (from);
- from_fab.fab$l_nam = &from_nam;
- from_fab.fab$l_fop = FAB$M_NAM;
-
- from_nam.nam$l_esa = from_esn;
- from_nam.nam$b_ess = sizeof from_esn;
-
- to_fab.fab$l_fna = to;
- to_fab.fab$b_fns = strlen (to);
- to_fab.fab$l_nam = &to_nam;
- to_fab.fab$l_fop = FAB$M_NAM;
-
- to_nam.nam$l_esa = to_esn;
- to_nam.nam$b_ess = sizeof to_esn;
-
- status = SYS$RENAME (&from_fab, 0, 0, &to_fab);
-
- if (status & 1)
- return 0;
- else
- {
- if (status == RMS$_DEV)
- errno = EXDEV;
- else
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
- }
-
- /* This function renames a file like `rename', but it strips
- the version number from the "to" filename, such that the "to" file is
- will always be a new version. It also sets the file protection once it is
- finished. The protection that we will use is stored in fab_final_pro,
- and was set when we did a creat_copy_attrs to create the file that we
- are renaming.
-
- We could use the chmod function, but Eunichs uses 3 bits per user category
- to describe the protection, and VMS uses 4 (write and delete are seperate
- bits). To maintain portability, the VMS implementation of `chmod' wires
- the W and D bits together. */
-
-
- static struct fibdef fib; /* We need this initialized to zero */
- char vms_file_written[NAM$C_MAXRSS];
-
- int
- rename_sans_version (from,to)
- char *from, *to;
- {
- short int chan;
- int stat;
- short int iosb[4];
- int status;
- struct FAB to_fab = cc$rms_fab;
- struct NAM to_nam = cc$rms_nam;
- struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib};
- struct dsc$descriptor fib_attr[2]
- = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}};
- char to_esn[NAM$C_MAXRSS];
-
- $DESCRIPTOR (disk,to_esn);
-
- to_fab.fab$l_fna = to;
- to_fab.fab$b_fns = strlen (to);
- to_fab.fab$l_nam = &to_nam;
- to_fab.fab$l_fop = FAB$M_NAM;
-
- to_nam.nam$l_esa = to_esn;
- to_nam.nam$b_ess = sizeof to_esn;
-
- status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */
-
- if (to_nam.nam$l_fnb && NAM$M_EXP_VER)
- *(to_nam.nam$l_ver) = '\0';
-
- stat = rename (from, to_esn);
- if (stat < 0)
- return stat;
-
- strcpy (vms_file_written, to_esn);
-
- to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */
- to_fab.fab$b_fns = strlen (vms_file_written);
-
- /* Now set the file protection to the correct value */
- sys$open (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */
-
- /* Copy these fields into the fib */
- fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0];
- fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1];
- fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2];
-
- sys$close (&to_fab, 0, 0);
-
- stat = sys$assign (&disk, &chan, 0, 0); /* open a channel to the disk */
- if (!stat)
- lib$signal (stat);
- stat = sys$qiow (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d,
- 0, 0, 0, &fib_attr, 0);
- if (!stat)
- lib$signal (stat);
- stat = sys$dassgn (chan);
- if (!stat)
- lib$signal (stat);
- strcpy (vms_file_written, to_esn); /* We will write this to the screen*/
- return 0;
- }
-
- link (file, new)
- char * file, * new;
- {
- register status;
- struct FAB fab;
- struct NAM nam;
- unsigned short fid[3];
- char esa[NAM$C_MAXRSS];
-
- fab = cc$rms_fab;
- fab.fab$l_fop = FAB$M_OFP;
- fab.fab$l_fna = file;
- fab.fab$b_fns = strlen (file);
- fab.fab$l_nam = &nam;
-
- nam = cc$rms_nam;
- nam.nam$l_esa = esa;
- nam.nam$b_ess = NAM$C_MAXRSS;
-
- status = SYS$PARSE (&fab);
- if ((status & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
- status = SYS$SEARCH (&fab);
- if ((status & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
-
- fid[0] = nam.nam$w_fid[0];
- fid[1] = nam.nam$w_fid[1];
- fid[2] = nam.nam$w_fid[2];
-
- fab.fab$l_fna = new;
- fab.fab$b_fns = strlen (new);
-
- status = SYS$PARSE (&fab);
- if ((status & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
-
- nam.nam$w_fid[0] = fid[0];
- nam.nam$w_fid[1] = fid[1];
- nam.nam$w_fid[2] = fid[2];
-
- nam.nam$l_esa = nam.nam$l_name;
- nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver;
-
- status = SYS$ENTER (&fab);
- if ((status & 1) == 0)
- {
- errno = EVMSERR;
- vaxc$errno = status;
- return -1;
- }
-
- return 0;
- }
-
- croak (badfunc)
- char *badfunc;
- {
- printf ("%s not yet implemented\r\n", badfunc);
- reset_sys_modes ();
- exit (1);
- }
-
- long
- random ()
- {
- /* Arrange to return a range centered on zero. */
- return rand () - (1 << 30);
- }
-
- srandom (seed)
- {
- srand (seed);
- }
- #endif /* VMS */
-
- #ifdef WRONG_NAME_INSQUE
-
- insque(q,p)
- caddr_t q,p;
- {
- _insque(q,p);
- }
-
- #endif
-
- #ifdef AIX
-
- /* Called from init_sys_modes. */
- hft_init ()
- {
- int junk;
-
- /* If we're not on an HFT we shouldn't do any of this. We determine
- if we are on an HFT by trying to get an HFT error code. If this
- call fails, we're not on an HFT. */
- #ifdef IBMR2AIX
- if (ioctl (0, HFQERROR, &junk) < 0)
- return;
- #else /* not IBMR2AIX */
- if (ioctl (0, HFQEIO, 0) < 0)
- return;
- #endif /* not IBMR2AIX */
-
- /* On AIX the default hft keyboard mapping uses backspace rather than delete
- as the rubout key's ASCII code. Here this is changed. The bug is that
- there's no way to determine the old mapping, so in reset_sys_modes
- we need to assume that the normal map had been present. Of course, this
- code also doesn't help if on a terminal emulator which doesn't understand
- HFT VTD's. */
- {
- struct hfbuf buf;
- struct hfkeymap keymap;
-
- buf.hf_bufp = (char *)&keymap;
- buf.hf_buflen = sizeof (keymap);
- keymap.hf_nkeys = 2;
- keymap.hfkey[0].hf_kpos = 15;
- keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
- #ifdef IBMR2AIX
- keymap.hfkey[0].hf_keyidh = '<';
- #else /* not IBMR2AIX */
- keymap.hfkey[0].hf_page = '<';
- #endif /* not IBMR2AIX */
- keymap.hfkey[0].hf_char = 127;
- keymap.hfkey[1].hf_kpos = 15;
- keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
- #ifdef IBMR2AIX
- keymap.hfkey[1].hf_keyidh = '<';
- #else /* not IBMR2AIX */
- keymap.hfkey[1].hf_page = '<';
- #endif /* not IBMR2AIX */
- keymap.hfkey[1].hf_char = 127;
- hftctl (0, HFSKBD, &buf);
- }
- /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
- at times. */
- line_ins_del_ok = char_ins_del_ok = 0;
- }
-
- /* Reset the rubout key to backspace. */
-
- hft_reset ()
- {
- struct hfbuf buf;
- struct hfkeymap keymap;
- int junk;
-
- #ifdef IBMR2AIX
- if (ioctl (0, HFQERROR, &junk) < 0)
- return;
- #else /* not IBMR2AIX */
- if (ioctl (0, HFQEIO, 0) < 0)
- return;
- #endif /* not IBMR2AIX */
-
- buf.hf_bufp = (char *)&keymap;
- buf.hf_buflen = sizeof (keymap);
- keymap.hf_nkeys = 2;
- keymap.hfkey[0].hf_kpos = 15;
- keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
- #ifdef IBMR2AIX
- keymap.hfkey[0].hf_keyidh = '<';
- #else /* not IBMR2AIX */
- keymap.hfkey[0].hf_page = '<';
- #endif /* not IBMR2AIX */
- keymap.hfkey[0].hf_char = 8;
- keymap.hfkey[1].hf_kpos = 15;
- keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
- #ifdef IBMR2AIX
- keymap.hfkey[1].hf_keyidh = '<';
- #else /* not IBMR2AIX */
- keymap.hfkey[1].hf_page = '<';
- #endif /* not IBMR2AIX */
- keymap.hfkey[1].hf_char = 8;
- hftctl (0, HFSKBD, &buf);
- }
-
- #endif /* AIX */
-