/* Interfaces to system-dependent kernel and library entries.
- Copyright (C) 1985, 1986, 1987, 1988, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 87, 88, 93, 94 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)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
#include <signal.h>
#include <setjmp.h>
-#include "config.h"
+#include <config.h>
#include "lisp.h"
#include "blockinput.h"
#undef NULL
#include <sys/stat.h>
#include <errno.h>
-extern int errno;
-#ifndef VMS
-extern char *sys_errlist[];
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
+#include <dos.h>
+#include "dosfns.h"
+#include "msdos.h"
+#include <sys/param.h>
#endif
+extern int errno;
+
#ifdef VMS
#include <rms.h>
#include <ttdef.h>
#undef FASYNC
#endif
+#ifndef MSDOS
#include <sys/ioctl.h>
+#endif
#include "systty.h"
-
-#ifdef BSD
-#ifdef BSD4_1
-#include <wait.h>
-#else /* not 4.1 */
-#include <sys/wait.h>
-#endif /* not 4.1 */
-#endif /* BSD */
+#include "syswait.h"
#ifdef BROKEN_TIOCGWINSZ
#undef TIOCGWINSZ
#include "syssignal.h"
#include "systime.h"
+/* 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
+
static int baud_convert[] =
#ifdef BAUD_CONVERT
BAUD_CONVERT;
extern short ospeed;
/* The file descriptor for Emacs's input terminal.
- Under Unix, this is always left zero;
+ Under Unix, this is normaly zero except when using X;
under VMS, we place the input channel number here.
This allows us to write more code that works for both VMS and Unix. */
static int input_fd;
+\f
+/* Specify a different file descriptor for further input operations. */
+
+void
+change_input_fd (fd)
+ int fd;
+{
+ input_fd = fd;
+}
+
+/* Discard pending input on descriptor input_fd. */
discard_tty_input ()
{
#ifdef APOLLO
{
int zero = 0;
- ioctl (0, TIOCFLUSH, &zero);
+ ioctl (input_fd, TIOCFLUSH, &zero);
}
#else /* not Apollo */
+#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
+ while (dos_keyread () != -1)
+ ;
+#else /* not MSDOS */
EMACS_GET_TTY (input_fd, &buf);
EMACS_SET_TTY (input_fd, &buf, 0);
+#endif /* not MSDOS */
#endif /* not Apollo */
#endif /* not VMS */
}
#ifdef SIGTSTP
+/* Arrange for character C to be read as the next input from
+ the terminal. */
+
stuff_char (c)
char c;
{
/* Should perhaps error if in batch mode */
#ifdef TIOCSTI
- ioctl (0, TIOCSTI, &c);
+ ioctl (input_fd, TIOCSTI, &c);
#else /* no TIOCSTI */
- error ("Cannot stuff terminal input characters in this version of Unix.");
+ error ("Cannot stuff terminal input characters in this version of Unix");
#endif /* no TIOCSTI */
}
#endif /* SIGTSTP */
-
+\f
init_baud_rate ()
{
if (noninteractive)
ospeed = 0;
else
{
+#ifdef MSDOS
+ ospeed = 15;
+#else
#ifdef VMS
struct sensemode sg;
#ifdef HAVE_TERMIOS
struct termios sg;
- sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600;
- tcgetattr (0, &sg);
+ sg.c_cflag = B9600;
+ tcgetattr (input_fd, &sg);
ospeed = cfgetospeed (&sg);
#else /* neither VMS nor TERMIOS */
#ifdef HAVE_TERMIO
struct termio sg;
- sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600;
+ sg.c_cflag = B9600;
#ifdef HAVE_TCATTR
- tcgetattr (0, &sg);
+ tcgetattr (input_fd, &sg);
#else
ioctl (input_fd, TCGETA, &sg);
#endif
struct sgttyb sg;
sg.sg_ospeed = B9600;
- if (ioctl (0, TIOCGETP, &sg) < 0)
+ if (ioctl (input_fd, TIOCGETP, &sg) < 0)
abort ();
ospeed = sg.sg_ospeed;
#endif /* not HAVE_TERMIO */
#endif /* not HAVE_TERMIOS */
#endif /* not VMS */
+#endif /* not MSDOS */
}
baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0]
#endif
/* Ok to do nothing if this feature does not exist */
}
-
+\f
#ifndef subprocesses
wait_without_blocking ()
#endif
#endif
}
-
+\f
#ifndef VMS
/* Set up the terminal at the other end of a pseudo-terminal that
we will be controlling an inferior through.
child_setup_tty (out)
int out;
{
+#ifndef MSDOS
struct emacs_tty s;
EMACS_GET_TTY (out, &s);
input */
s.main.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on
output */
+ s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
#if 0
/* Said to be unnecessary: */
s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */
s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE
| CBREAK | TANDEM);
+ s.main.sg_flags |= LPASS8;
s.main.sg_erase = 0377;
s.main.sg_kill = 0377;
+ s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */
#endif /* not HAVE_TERMIO */
ioctl (out, FIOASYNC, &zero);
}
#endif /* RTU */
+#endif /* not MSDOS */
}
#endif /* not VMS */
{
EMACS_SET_TTY_PGRP (input_fd, &pid);
}
-
+\f
/* Record a signal code and the handler for it. */
struct save_signal
{
sys_suspend ()
{
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
+ int st;
+ char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */
+#endif
#ifdef VMS
/* "Foster" parentage allows emacs to return to a subprocess that attached
to the current emacs as a cheaper than starting a whole new process. This
}
return -1;
#else
-#ifdef SIGTSTP
+#if defined(SIGTSTP) && !defined(MSDOS)
{
-#ifdef USG
- int pgrp = getpgrp ();
-#else
- int pgrp = getpgrp (0);
-#endif
+ int pgrp = EMACS_GETPGRP (0);
EMACS_KILLPG (pgrp, SIGTSTP);
}
{
char *sh;
+#ifdef MSDOS /* MW, Aug 1993 */
+ getwd (oldwd);
+#endif
sh = (char *) egetenv ("SHELL");
if (sh == 0)
sh = "sh";
+
/* Use our buffer's default directory for the subshell. */
{
Lisp_Object dir;
which somehow wedges the hp compiler. So instead... */
dir = intern ("default-directory");
- /* Can't use NULL */
+ /* Can't use NILP */
if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil))
goto xyzzy;
dir = Fsymbol_value (dir);
}
#endif
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
+ st = system (sh);
+ chdir (oldwd);
+ if (st)
+ report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil));
+#else /* not MSDOS */
execlp (sh, sh, 0);
write (1, "Can't execute subshell", 22);
_exit (1);
+#endif /* not MSDOS */
}
save_signal_handlers (saved_handlers);
init_sigio ()
{
#ifdef FASYNC
- old_fcntl_flags = fcntl (0, F_GETFL, 0) & ~FASYNC;
+ old_fcntl_flags = fcntl (input_fd, F_GETFL, 0) & ~FASYNC;
#endif
request_sigio ();
}
#ifdef SIGWINCH
sigunblock (sigmask (SIGWINCH));
#endif
- fcntl (0, F_SETFL, old_fcntl_flags | FASYNC);
+ fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC);
interrupts_deferred = 0;
}
#ifdef SIGWINCH
sigblock (sigmask (SIGWINCH));
#endif
- fcntl (0, F_SETFL, old_fcntl_flags);
+ fcntl (input_fd, F_SETFL, old_fcntl_flags);
interrupts_deferred = 1;
}
request_sigio ()
{
int on = 1;
- ioctl (0, FIOASYNC, &on);
+ ioctl (input_fd, FIOASYNC, &on);
interrupts_deferred = 0;
}
{
int off = 0;
- ioctl (0, FIOASYNC, &off);
+ ioctl (input_fd, FIOASYNC, &off);
interrupts_deferred = 1;
}
#else /* not FASYNC, not STRIDE */
+#ifdef _CX_UX
+
+#include <termios.h>
+
+request_sigio ()
+{
+ int on = 1;
+ sigset_t st;
+
+ sigemptyset(&st);
+ sigaddset(&st, SIGIO);
+ ioctl (input_fd, FIOASYNC, &on);
+ interrupts_deferred = 0;
+ sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0);
+}
+
+unrequest_sigio ()
+{
+ int off = 0;
+
+ ioctl (input_fd, FIOASYNC, &off);
+ interrupts_deferred = 1;
+}
+
+#else /* ! _CX_UX */
+
request_sigio ()
{
croak ("request_sigio");
croak ("unrequest_sigio");
}
+#endif /* _CX_UX */
#endif /* STRIDE */
#endif /* FASYNC */
#endif /* F_SETFL */
setpgrp (0, inherited_pgroup);
if (inherited_pgroup != me)
- EMACS_SET_TTY_PGRP (0, &me);
+ EMACS_SET_TTY_PGRP (input_fd, &me);
setpgrp (0, me);
}
widen_foreground_group ()
{
if (inherited_pgroup != getpid ())
- EMACS_SET_TTY_PGRP (0, &inherited_pgroup);
+ EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup);
setpgrp (0, inherited_pgroup);
}
return -1;
#else
+#ifndef MSDOS
/* I give up - I hope you have the BSD ioctls. */
if (ioctl (fd, TIOCGETP, &settings->main) < 0)
return -1;
-
+#endif /* not MSDOS */
#endif
#endif
#endif
return -1;
#else
+#ifndef MSDOS
/* I give up - I hope you have the BSD ioctls. */
if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
return -1;
+#endif /* not MSDOS */
#endif
#endif
int lmode;
#endif
+#ifndef F_SETOWN_BUG
#ifdef F_SETOWN
int old_fcntl_owner;
#endif /* F_SETOWN */
+#endif /* F_SETOWN_BUG */
/* This may also be defined in stdio,
but if so, this does no harm,
tty.main.tt_char &= ~TT$M_TTSYNC;
tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON;
#else /* not VMS (BSD, that is) */
+#ifndef MSDOS
tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS);
if (meta_key)
tty.main.sg_flags |= ANYP;
tty.main.sg_flags |= interrupt_input ? RAW : CBREAK;
+#endif
#endif /* not VMS (BSD, that is) */
#endif /* not HAVE_TERMIO */
tty.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
-
tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode;
#ifdef ultrix
/* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
#ifdef HAVE_LTCHARS
tty.ltchars = new_ltchars;
#endif /* HAVE_LTCHARS */
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
+ internal_terminal_init ();
+ dos_ttraw ();
+#endif
EMACS_SET_TTY (input_fd, &tty, 0);
we have an unlocked terminal at the start. */
#ifdef TCXONC
- if (!flow_control) ioctl (0, TCXONC, 1);
+ if (!flow_control) ioctl (input_fd, TCXONC, 1);
#endif
#ifndef APOLLO
#ifdef TIOCSTART
- if (!flow_control) ioctl (0, TIOCSTART, 0);
+ if (!flow_control) ioctl (input_fd, TIOCSTART, 0);
#endif
#endif
}
#ifdef F_SETFL
+#ifndef F_SETOWN_BUG
#ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
if (interrupt_input)
{
- old_fcntl_owner = fcntl (0, F_GETOWN, 0);
- fcntl (0, F_SETOWN, getpid ());
+ old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0);
+ fcntl (input_fd, F_SETOWN, getpid ());
init_sigio ();
}
#endif /* F_GETOWN */
+#endif /* F_SETOWN_BUG */
#endif /* F_SETFL */
#ifdef BSD4_1
*widthp = tty.scr_wid;
*heightp = tty.scr_len;
+#else
+#ifdef MSDOS
+ *widthp = ScreenCols ();
+ *heightp = ScreenRows ();
#else /* system doesn't know size */
-
*widthp = 0;
*heightp = 0;
+#endif
#endif /* not VMS */
#endif /* not SunOS-style */
#endif
#ifdef F_SETFL
+#ifndef F_SETOWN_BUG
#ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
if (interrupt_input)
{
reset_sigio ();
- fcntl (0, F_SETOWN, old_fcntl_owner);
+ fcntl (input_fd, F_SETOWN, old_fcntl_owner);
}
#endif /* F_SETOWN */
+#endif /* F_SETOWN_BUG */
#endif /* F_SETFL */
#ifdef BSD4_1
if (interrupt_input)
while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR)
;
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
+ dos_ttcooked ();
+#endif
+
#ifdef AIX
hft_reset ();
#endif
if (dsp)
{
update_mode_lines++;
+ prepare_menu_bars ();
redisplay_preserve_echo_area ();
}
}
#endif /* not CANNOT_DUMP */
\f
-/* Get_system_name returns as its value
+/* get_system_name returns as its value
a string for the Lisp function system-name to return. */
#ifdef BSD4_1
/* 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 */
+static char *get_system_name_cache;
+static int get_system_name_predump_p;
#ifndef BSD4_1
#ifndef 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
+#else
+#ifndef CANNOT_DUMP
+ /* If the cached value is from before the dump, and we've dumped
+ since then, then the cached value is no good. */
+ if (get_system_name_predump_p && initialized && get_system_name_cache)
{
- char *end;
-
- if ((end = index (sp, ':')) != 0)
- *end = '\0';
+ xfree (get_system_name_cache);
+ get_system_name_cache = 0;
}
- strcpy (system_name_saved, sp);
-#else /* not VMS */
- gethostname (system_name_saved, sizeof (system_name_saved));
+#endif
+ if (!get_system_name_cache)
+ {
+ /* No cached value, so get the name from the system. */
+#ifdef VMS
+ char *sp;
+ if ((sp = egetenv ("SYS$NODE")) == 0)
+ sp = "vax-vms";
+ else
+ {
+ char *end;
+
+ if ((end = index (sp, ':')) != 0)
+ *end = '\0';
+ }
+ get_system_name_cache = (char *) xmalloc (strlen (sp) + 1);
+ strcpy (get_system_name_cache, sp);
+#else
+#ifndef HAVE_GETHOSTNAME
+ struct utsname uts;
+ uname (&uts);
+ get_system_name_cache = (char *) xmalloc (strlen (uts.nodename) + 1);
+ strcpy (get_system_name_cache, uts.nodename);
+#else /* HAVE_GETHOSTNAME */
+ {
+ int hostname_size = 256;
+ char *hostname = (char *) xmalloc (hostname_size);
+
+ /* Try to get the host name; if the buffer is too short, try
+ again. Apparently, the only indication gethostname gives of
+ whether the buffer was large enough is the presence or absence
+ of a '\0' in the string. Eech. */
+ for (;;)
+ {
+ gethostname (hostname, hostname_size - 1);
+ hostname[hostname_size - 1] = '\0';
+
+ /* Was the buffer large enough for the '\0'? */
+ if (strlen (hostname) < hostname_size - 1)
+ break;
+
+ hostname_size <<= 1;
+ hostname = (char *) xrealloc (hostname, hostname_size);
+ }
+ get_system_name_cache = hostname;
#ifdef HAVE_SOCKETS
- /* Turn the hostname into the official, fully-qualified hostname.
- Don't do this if we're going to dump; this can confuse system
- libraries on some machines and make the dumped emacs core dump. */
+ /* Turn the hostname into the official, fully-qualified hostname.
+ Don't do this if we're going to dump; this can confuse system
+ libraries on some machines and make the dumped emacs core dump. */
#ifndef CANNOT_DUMP
- if (initialized)
+ if (initialized)
#endif /* not CANNOT_DUMP */
- {
- struct hostent *hp;
- hp = gethostbyname (system_name_saved);
- if (hp && strlen (hp->h_name) < sizeof(system_name_saved))
- strcpy (system_name_saved, hp->h_name);
- }
+ {
+ struct hostent *hp = gethostbyname (hostname);
+ if (hp)
+ {
+ char *fqdn = hp->h_name;
+ if (!index (fqdn, '.'))
+ {
+ /* We still don't have a fully qualified domain name.
+ Try to find one in the list of alternate names */
+ char **alias = hp->h_aliases;
+ while (*alias && !index (*alias, '.'))
+ alias++;
+ if (*alias)
+ fqdn = *alias;
+ }
+ hostname = (char *) xrealloc (hostname, strlen (fqdn) + 1);
+ strcpy (hostname, fqdn);
+ }
+ }
#endif /* HAVE_SOCKETS */
-#endif /* not VMS */
- return system_name_saved;
-#endif /* not USG, not 4.1 */
-#endif /* not USG */
-}
-
-#ifdef VMS
-#ifndef HAVE_GETHOSTNAME
-void gethostname(buf, len)
- char *buf;
- int len;
-{
- char *s;
- s = getenv ("SYS$NODE");
- if (s == NULL)
- buf[0] = '\0';
- else {
- strncpy (buf, s, len - 2);
- buf[len - 1] = '\0';
- } /* else */
-} /* static void gethostname */
-#endif /* ! HAVE_GETHOSTNAME */
+ get_system_name_cache = hostname;
+ }
+#endif /* HAVE_GETHOSTNAME */
#endif /* VMS */
-
+#ifndef CANNOT_DUMP
+ get_system_name_predump_p = !initialized;
+#endif
+ }
+ return (get_system_name_cache);
+#endif /* BSD4_1 */
+}
\f
#ifndef VMS
#ifndef HAVE_SELECT
#ifdef FIONREAD
status = ioctl (fd, FIONREAD, &avail);
#else /* no FIONREAD */
+#ifdef MSDOS
+ abort (); /* I don't think we need it. */
+#else /* not MSDOS */
/* Hoping it will return -1 if nothing available
or 0 if all 0 chars requested are read. */
if (proc_buffered_char[fd] >= 0)
if (avail > 0)
proc_buffered_char[fd] = buf;
}
+#endif /* not MSDOS */
#endif /* no FIONREAD */
}
if (status >= 0 && avail > 0)
while (select_alarmed == 0 && *local_timeout != 0
&& process_tick == update_tick)
{
+#ifdef MSDOS
+ sleep_or_kbd_hit (SELECT_PAUSE, (orfds & 1) != 0);
+ select_alarm ();
+#else /* not MSDOS */
/* If we are interested in terminal input,
wait by reading the terminal.
That makes instant wakeup for terminal input at least. */
}
else
pause ();
+#endif /* not MSDOS */
}
(*local_timeout) -= SELECT_PAUSE;
/* Reset the old alarm if there was one */
read_input_waiting ()
{
- char buf[256 * BUFFER_SIZE_FACTOR];
struct input_event e;
int nread, i;
extern int quit_char;
if (read_socket_hook)
{
+ struct input_event buf[256];
+
read_alarm_should_throw = 0;
if (! setjmp (read_alarm_throw))
- nread = (*read_socket_hook) (0, buf, 256 * BUFFER_SIZE_FACTOR, 1, 0);
+ nread = (*read_socket_hook) (0, buf, 256, 1, 0);
else
nread = -1;
+
+ /* Scan the chars for C-g and store them in kbd_buffer. */
+ for (i = 0; i < nread; i++)
+ {
+ kbd_buffer_store_event (&buf[i]);
+ /* Don't look at input that follows a C-g too closely.
+ This reduces lossage due to autorepeat on C-g. */
+ if (buf[i].kind == ascii_keystroke
+ && XINT(buf[i].code) == quit_char)
+ break;
+ }
}
else
- nread = read (fileno (stdin), buf, 1);
-
- /* Scan the chars for C-g and store them in kbd_buffer. */
- e.kind = ascii_keystroke;
- e.frame_or_window = selected_frame;
- e.modifiers = 0;
- for (i = 0; i < nread; i++)
{
- XSET (e.code, Lisp_Int, buf[i]);
- kbd_buffer_store_event (&e);
- /* Don't look at input that follows a C-g too closely.
- This reduces lossage due to autorepeat on C-g. */
- if (buf[i] == quit_char)
- break;
+ char buf[3];
+ nread = read (fileno (stdin), buf, 1);
+
+ /* Scan the chars for C-g and store them in kbd_buffer. */
+ e.kind = ascii_keystroke;
+ e.frame_or_window = selected_frame;
+ e.modifiers = 0;
+ for (i = 0; i < nread; i++)
+ {
+ /* Convert chars > 0177 to meta events if desired.
+ We do this under the same conditions that read_avail_input does. */
+ if (read_socket_hook == 0)
+ {
+ /* If the user says she has a meta key, then believe her. */
+ if (meta_key == 1 && (buf[i] & 0x80))
+ e.modifiers = meta_modifier;
+ if (meta_key != 2)
+ buf[i] &= ~0x80;
+ }
+
+ XSET (e.code, Lisp_Int, buf[i]);
+ kbd_buffer_store_event (&e);
+ /* Don't look at input that follows a C-g too closely.
+ This reduces lossage due to autorepeat on C-g. */
+ if (buf[i] == quit_char)
+ break;
+ }
}
}
#else
sigemptyset (&new_action.sa_mask);
new_action.sa_handler = action;
+#ifdef SA_RESTART
+ /* Emacs mostly works better with restartable system services. If this
+ * flag exists, we probably want to turn it on here.
+ */
+ new_action.sa_flags = SA_RESTART;
+#else
new_action.sa_flags = 0;
+#endif
sigaction (signal_number, &new_action, &old_action);
return (old_action.sa_handler);
#endif /* DGUX */
\f
#ifndef BSTRING
+#ifndef bzero
+
void
bzero (b, length)
register char *b;
#endif /* not VMS */
}
+#endif /* no bzero */
+
+#ifndef bcopy
/* 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)
*b2++ = *b1++;
#endif /* not VMS */
}
+#endif /* no bcopy */
+#ifndef bcmp
int
bcmp (b1, b2, length) /* This could be a macro! */
register char *b1;
return 0;
#endif /* not VMS */
}
+#endif /* no bcmp */
+
#endif /* not BSTRING */
\f
#ifndef HAVE_RANDOM
#endif /* SHAREABLE_LIB_BUG */
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */
+
+#ifndef HAVE_STRERROR
+char *
+strerror (errnum)
+ int errnum;
+{
+ extern char *sys_errlist[];
+ extern int sys_nerr;
+
+ if (errnum >= 0 && errnum < sys_nerr)
+ return sys_errlist[errnum];
+ return (char *) "Unknown error";
+}
+
+#endif /* ! HAVE_STRERROR */
\f
#ifdef INTERRUPTIBLE_OPEN
char *buf;
unsigned int nbyte;
{
- register int rtnval;
+ register int rtnval, bytes_written;
- while ((rtnval = write (fildes, buf, nbyte)) == -1
- && (errno == EINTR));
- return (rtnval);
+ bytes_written = 0;
+
+ while (nbyte > 0)
+ {
+ rtnval = write (fildes, buf, nbyte);
+
+ if (rtnval == -1)
+ {
+ if (errno == EINTR)
+ continue;
+ else
+ return (-1);
+ }
+
+ buf += rtnval;
+ nbyte -= rtnval;
+ bytes_written += rtnval;
+ }
+ return (bytes_written);
}
#endif /* INTERRUPTIBLE_IO */
\f
+#ifndef HAVE_VFORK
+
+/*
+ * Substitute fork for vfork on USG flavors.
+ */
+
+vfork ()
+{
+ return (fork ());
+}
+
+#endif /* not HAVE_VFORK */
+\f
#ifdef USG
/*
* All of the following are for USG.
"user defined signal 2", /* 17 SIGUSR2 */
"death of a child", /* 18 SIGCLD */
"power-fail restart", /* 19 SIGPWR */
+#ifdef sun
+ "window size change", /* 20 SIGWINCH */
+ "urgent socket condition", /* 21 SIGURG */
+ "pollable event occured", /* 22 SIGPOLL */
+ "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
+ "user stop requested from tty", /* 24 SIGTSTP */
+ "stopped process has been continued", /* 25 SIGCONT */
+ "background tty read attempted", /* 26 SIGTTIN */
+ "background tty write attempted", /* 27 SIGTTOU */
+ "virtual timer expired", /* 28 SIGVTALRM */
+ "profiling timer expired", /* 29 SIGPROF */
+ "exceeded cpu limit", /* 30 SIGXCPU */
+ "exceeded file size limit", /* 31 SIGXFSZ */
+ "process's lwps are blocked", /* 32 SIGWAITING */
+ "special signal used by thread library", /* 33 SIGLWP */
+ "Special Signal Used By CPR", /* 34 SIGFREEZE */
+ "Special Signal Used By CPR", /* 35 SIGTHAW */
+#endif /* sun */
#endif /* not AIX */
0
};
BLOCK_INPUT; /* getcwd uses malloc */
spath = npath = getcwd ((char *) 0, MAXPATHLEN);
+ if (spath == 0)
+ return spath;
/* On Altos 3068, getcwd can return @hostname/dir, so discard
up to first slash. Should be harmless on other systems. */
while (*npath && *npath != '/')
#ifndef HAVE_RENAME
rename (from, to)
- char *from;
- char *to;
+ const char *from;
+ const char *to;
{
if (access (from, 0) == 0)
{
#endif
-#ifndef HAVE_VFORK
-
-/*
- * Substitute fork for vfork on USG flavors.
- */
-
-vfork ()
-{
- return (fork ());
-}
-
-#endif /* not HAVE_VFORK */
-
#ifdef MISSING_UTIMES
/* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */
#ifdef F_DUPFD
fd = fcntl (oldd, F_DUPFD, newd);
if (fd != newd)
- error ("can't dup2 (%i,%i) : %s", oldd, newd, sys_errlist[errno]);
+ error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno));
#else
fd = dup (old);
if (fd == -1)
#include <dirent.h>
-#ifndef HAVE_CLOSEDIR
+#if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
+
int
closedir (dirp)
register DIR *dirp; /* stream from opendir */
{
- sys_close (dirp->dd_fd);
+ int rtnval;
+
+ rtnval = sys_close (dirp->dd_fd);
/* Some systems (like Solaris) allocate the buffer and the DIR all
in one block. Why in the world are we freeing this ourselves
xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */
#endif
xfree ((char *) dirp);
+
+ return rtnval;
}
-#endif /* not HAVE_CLOSEDIR */
+#endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
#endif /* SYSV_SYSTEM_DIR */
#ifdef NONSYSTEM_DIR_LIBRARY
#endif /* VMS */
#endif /* NONSYSTEM_DIR_LIBRARY */
+
+\f
+/* mkdir and rmdir functions, for systems which don't have them. */
+
+#ifndef HAVE_MKDIR
+/*
+ * Written by Robert Rother, Mariah Corporation, August 1985.
+ *
+ * If you want it, it's yours. All I ask in return is that if you
+ * figure out how to do this in a Bourne Shell script you send me
+ * a copy.
+ * sdcsvax!rmr or rmr@uscd
+ *
+ * Severely hacked over by John Gilmore to make a 4.2BSD compatible
+ * subroutine. 11Mar86; hoptoad!gnu
+ *
+ * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
+ * subroutine didn't return EEXIST. It does now.
+ */
+
+/*
+ * Make a directory.
+ */
+#ifdef MKDIR_PROTOTYPE
+MKDIR_PROTOTYPE
+#else
+int
+mkdir (dpath, dmode)
+ char *dpath;
+ int dmode;
+#endif
+{
+ int cpid, status, fd;
+ struct stat statbuf;
+
+ if (stat (dpath, &statbuf) == 0)
+ {
+ errno = EEXIST; /* Stat worked, so it already exists */
+ return -1;
+ }
+
+ /* If stat fails for a reason other than non-existence, return error */
+ if (errno != ENOENT)
+ return -1;
+
+ synch_process_alive = 1;
+ switch (cpid = fork ())
+ {
+
+ case -1: /* Error in fork */
+ return (-1); /* Errno is set already */
+
+ case 0: /* Child process */
+ /*
+ * Cheap hack to set mode of new directory. Since this
+ * child process is going away anyway, we zap its umask.
+ * FIXME, this won't suffice to set SUID, SGID, etc. on this
+ * directory. Does anybody care?
+ */
+ status = umask (0); /* Get current umask */
+ status = umask (status | (0777 & ~dmode)); /* Set for mkdir */
+ fd = sys_open("/dev/null", 2);
+ if (fd >= 0)
+ {
+ dup2 (fd, 0);
+ dup2 (fd, 1);
+ dup2 (fd, 2);
+ }
+ execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
+ _exit (-1); /* Can't exec /bin/mkdir */
+
+ default: /* Parent process */
+ wait_for_termination (cpid);
+ }
+
+ if (synch_process_death != 0 || synch_process_retcode != 0)
+ {
+ errno = EIO; /* We don't know why, but */
+ return -1; /* /bin/mkdir failed */
+ }
+
+ return 0;
+}
+#endif /* not HAVE_MKDIR */
+
+#ifndef HAVE_RMDIR
+int
+rmdir (dpath)
+ char *dpath;
+{
+ int cpid, status, fd;
+ struct stat statbuf;
+
+ if (stat (dpath, &statbuf) != 0)
+ {
+ /* Stat just set errno. We don't have to */
+ return -1;
+ }
+
+ synch_process_alive = 1;
+ switch (cpid = fork ())
+ {
+
+ case -1: /* Error in fork */
+ return (-1); /* Errno is set already */
+
+ case 0: /* Child process */
+ fd = sys_open("/dev/null", 2);
+ if (fd >= 0)
+ {
+ dup2 (fd, 0);
+ dup2 (fd, 1);
+ dup2 (fd, 2);
+ }
+ wait_for_termination (cpid);
+ if (synch_process_death != 0 || synch_process_retcode != 0)
+ return -1; /* /bin/rmdir failed */
+ default: /* Parent process */
+ while (cpid != wait (&status)); /* Wait for kid to finish */
+ }
+
+ if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
+ {
+ errno = EIO; /* We don't know why, but */
+ return -1; /* /bin/mkdir failed */
+ }
+
+ return 0;
+}
+#endif /* !HAVE_RMDIR */
+
+
\f
/* Functions for VMS */
#ifdef VMS
getwd (pathname)
char *pathname;
{
- char *ptr;
+ char *ptr, *val;
extern char *getcwd ();
#define MAXPATHLEN 1024
ptr = xmalloc (MAXPATHLEN);
- getcwd (ptr, MAXPATHLEN);
+ val = getcwd (ptr, MAXPATHLEN);
+ if (val == 0)
+ {
+ xfree (ptr);
+ return val;
+ }
strcpy (pathname, ptr);
xfree (ptr);
HCoop / bpt / emacs.git / blobdiff