/* 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,
#undef fwrite
#endif
+#ifndef HAVE_H_ERRNO
+extern int h_errno;
+#endif
+
#include <stdio.h>
#include <sys/types.h>
#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"
#include "syswait.h"
#ifdef BROKEN_TIOCGWINSZ
#undef TIOCGWINSZ
+#undef TIOCSWINSZ
#endif
#ifdef USG
#ifndef MEMORY_IN_STRING_H
#include <memory.h>
#endif
-#ifdef TIOCGWINSZ
+#if defined (TIOCGWINSZ) || defined (ISC4_0)
#ifdef NEED_SIOCTL
#include <sys/sioctl.h>
#endif
#include <sys/stream.h>
#include <sys/ptem.h>
#endif
-#endif /* TIOCGWINSZ */
+#endif /* TIOCGWINSZ or ISC4_0 */
#endif /* USG */
extern int quit_char;
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 TIOCSTI
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 */
}
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;
+ sg.c_cflag = B9600;
tcgetattr (input_fd, &sg);
ospeed = cfgetospeed (&sg);
+#if defined (USE_GETOBAUD) && defined (getobaud)
+ /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
+ if (ospeed == 0)
+ ospeed = getobaud (sg.c_cflag);
+#endif
#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 (input_fd, &sg);
#else
#endif /* not HAVE_TERMIO */
#endif /* not HAVE_TERMIOS */
#endif /* not VMS */
+#endif /* not MSDOS */
}
baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0]
child_setup_tty (out)
int out;
{
+#ifndef MSDOS
struct emacs_tty s;
EMACS_GET_TTY (out, &s);
#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
s.main.c_oflag |= OPOST; /* Enable output postprocessing */
s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
+#ifdef NLDLY
s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
/* No output delays */
+#endif
s.main.c_lflag &= ~ECHO; /* Disable echo */
s.main.c_lflag |= ISIG; /* Enable signals */
- s.main.c_iflag &= ~IUCLC; /* Disable map of upper case to lower on
- input */
- s.main.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on
- output */
+#ifdef IUCLC
+ s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */
+#endif
+#ifdef OLCUC
+ s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */
+#endif
s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
#if 0
/* Said to be unnecessary: */
ioctl (out, FIOASYNC, &zero);
}
#endif /* RTU */
+#endif /* not MSDOS */
}
#endif /* not VMS */
}
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);
}
/* 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 ();
+ sys_subshell ();
+
+#endif /* no USG_JOBCTRL */
+#endif /* no SIGTSTP */
+#endif /* not VMS */
+}
+
+/* Fork a subshell. */
+
+sys_subshell ()
+{
+#ifndef VMS
+#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
+ int st;
+ char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */
+#endif
+ int pid;
struct save_signal saved_handlers[5];
+ Lisp_Object dir;
+ unsigned char *str = 0;
+ int len;
saved_handlers[0].code = SIGINT;
saved_handlers[1].code = SIGQUIT;
saved_handlers[3].code = 0;
#endif
+ /* Mentioning current_buffer->buffer would mean including buffer.h,
+ which somehow wedges the hp compiler. So instead... */
+
+ dir = intern ("default-directory");
+ /* Can't use NILP */
+ if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil))
+ goto xyzzy;
+ dir = Fsymbol_value (dir);
+ if (XTYPE (dir) != Lisp_String)
+ goto xyzzy;
+
+ dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil);
+ 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;
+ xyzzy:
+
+ pid = vfork ();
+
if (pid == -1)
error ("Can't spawn subshell");
if (pid == 0)
{
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;
- 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;
+ if (str)
chdir (str);
- }
- xyzzy:
+
#ifdef subprocesses
close_process_descs (); /* Close Emacs's pipes/ptys */
#endif
-#ifdef PRIO_PROCESS
+#ifdef SET_EMACS_PRIORITY
{
extern int emacs_priority;
- if (emacs_priority)
+ if (emacs_priority < 0)
nice (-emacs_priority);
}
#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);
synch_process_alive = 1;
wait_for_termination (pid);
restore_signal_handlers (saved_handlers);
-
-#endif /* no USG_JOBCTRL */
-#endif /* no SIGTSTP */
-#endif /* not VMS */
+#endif /* !VMS */
}
save_signal_handlers (saved_handlers)
#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 */
\f
/* Saving and restoring the process group of Emacs's terminal. */
-#ifdef BSD
+#ifdef BSD_PGRPS
/* The process group of which Emacs was a member when it initially
started.
setpgrp (0, inherited_pgroup);
}
-#endif
+#endif /* BSD_PGRPS */
\f
/* Getting and setting emacs_tty structures. */
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
#endif
#endif /* not VMS */
-#ifdef BSD
+#ifdef BSD_PGRPS
if (! read_socket_hook && EQ (Vwindow_system, Qnil))
narrow_foreground_group ();
#endif
tty = old_tty;
#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
+#ifdef DGUX
+ /* This allows meta to be sent on 8th bit. */
+ tty.main.c_iflag &= ~INPCK; /* don't check input for parity */
+#endif
tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
#ifdef ISTRIP
tty.main.c_lflag &= ~ECHO; /* Disable echo */
tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */
#ifdef IEXTEN
- tty.main.c_iflag &= ~IEXTEN; /* Disable other editing characters. */
+ tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */
#endif
tty.main.c_lflag |= ISIG; /* Enable signals */
if (flow_control)
#ifdef VDISCARD
tty.main.c_cc[VDISCARD] = CDISABLE;
#endif /* VDISCARD */
+#ifdef VSTART
+ tty.main.c_cc[VSTART] = CDISABLE;
+#endif /* VSTART */
+#ifdef VSTOP
+ tty.main.c_cc[VSTOP] = CDISABLE;
+#endif /* VSTOP */
#endif /* mips or HAVE_TCATTR */
#ifdef AIX
#ifndef IBMR2AIX
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 */
#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);
#ifdef F_SETFL
#ifndef F_SETOWN_BUG
#ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
- if (interrupt_input)
+ if (interrupt_input
+ && ! read_socket_hook && EQ (Vwindow_system, Qnil))
{
old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0);
fcntl (input_fd, F_SETOWN, getpid ());
#else
setbuf (stdout, _sobuf);
#endif
- set_terminal_modes ();
+ if (! read_socket_hook && EQ (Vwindow_system, Qnil))
+ set_terminal_modes ();
+
if (term_initted && no_redraw_on_reenter)
{
if (display_completed)
EMACS_GET_TTY (input_fd, &tty);
return EMACS_TTY_TABS_OK (&tty);
}
-
+\f
/* 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. */
+ Store number of lines into *HEIGHTP and width into *WIDTHP.
+ We store 0 if there's no valid information. */
get_frame_size (widthp, heightp)
int *widthp, *heightp;
*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 /* not BSD-style */
}
+/* Set the logical window size associated with descriptor FD
+ to HEIGHT and WIDTH. This is used mainly with ptys. */
+
+int
+set_window_size (fd, height, width)
+ int fd, height, width;
+{
+#ifdef TIOCSWINSZ
+
+ /* BSD-style. */
+ struct winsize size;
+ size.ws_row = height;
+ size.ws_col = width;
+
+ if (ioctl (fd, TIOCSWINSZ, &size) == -1)
+ return 0; /* error */
+ else
+ return 1;
+
+#else
+#ifdef TIOCSSIZE
+
+ /* SunOS - style. */
+ struct ttysize size;
+ size.ts_lines = height;
+ size.ts_cols = width;
+
+ if (ioctl (fd, TIOCGSIZE, &size) == -1)
+ return 0;
+ else
+ return 1;
+#else
+ return -1;
+#endif /* not SunOS-style */
+#endif /* not BSD-style */
+}
+
\f
/* Prepare the terminal for exiting Emacs; move the cursor to the
bottom of the frame, turn off interrupt-driven I/O, etc. */
}
#endif /* F_SETOWN */
#endif /* F_SETOWN_BUG */
+#ifdef O_NDELAY
+ fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY);
+#endif
#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
-#ifdef BSD
+#ifdef BSD_PGRPS
widen_foreground_group ();
#endif
}
if (dsp)
{
update_mode_lines++;
+ prepare_menu_bars ();
redisplay_preserve_echo_area ();
}
}
*
*/
-#ifndef CANNOT_UNEXEC
+#if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START)
char *
start_of_text ()
{
#endif /* GOULD */
#endif /* TEXT_START */
}
-#endif /* not CANNOT_UNEXEC */
+#endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */
/*
* Return the address of the start of the data segment prior to
#endif /* not CANNOT_DUMP */
\f
-/* Get_system_name returns as its value
- a string for the Lisp function system-name to return. */
+/* init_system_name sets up the 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 */
+extern Lisp_Object Vsystem_name;
#ifndef BSD4_1
-#ifndef USG
#ifndef VMS
#ifdef HAVE_SOCKETS
#include <sys/socket.h>
#include <netdb.h>
#endif /* HAVE_SOCKETS */
#endif /* not VMS */
-#endif /* not USG */
#endif /* not BSD4_1 */
-char *
-get_system_name ()
+void
+init_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];
+ Vsystem_name = build_string (sysname);
+#else
#ifdef VMS
- char *sp;
+ char *sp, *end;
if ((sp = egetenv ("SYS$NODE")) == 0)
- sp = "vax-vms";
+ Vsystem_name = build_string ("vax-vms");
+ else if ((end = index (sp, ':')) == 0)
+ Vsystem_name = build_string (sp);
else
+ Vsystem_name = make_string (sp, end - sp);
+#else
+#ifndef HAVE_GETHOSTNAME
+ struct utsname uts;
+ uname (&uts);
+ Vsystem_name = build_string (uts.nodename);
+#else /* HAVE_GETHOSTNAME */
+ int hostname_size = 256;
+ char *hostname = (char *) alloca (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 (;;)
{
- char *end;
+ gethostname (hostname, hostname_size - 1);
+ hostname[hostname_size - 1] = '\0';
- if ((end = index (sp, ':')) != 0)
- *end = '\0';
+ /* Was the buffer large enough for the '\0'? */
+ if (strlen (hostname) < hostname_size - 1)
+ break;
+
+ hostname_size <<= 1;
+ hostname = (char *) alloca (hostname_size);
}
- strcpy (system_name_saved, sp);
-#else /* not VMS */
- gethostname (system_name_saved, sizeof (system_name_saved));
#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
#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);
+ int count;
+ for (count = 0; count < 10; count++)
+ {
+#ifdef TRY_AGAIN
+ h_errno = 0;
+#endif
+ hp = gethostbyname (hostname);
+#ifdef TRY_AGAIN
+ if (! (hp == 0 && h_errno == TRY_AGAIN))
+#endif
+ break;
+ Fsleep_for (make_number (1), Qnil);
+ }
+ if (hp)
+ {
+ char *fqdn = hp->h_name;
+ char *p;
+
+ 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 = fqdn;
+#if 0
+ /* Convert the host name to lower case. */
+ /* Using ctype.h here would introduce a possible locale
+ dependence that is probably wrong for hostnames. */
+ p = hostname;
+ while (*p)
+ {
+ if (*p >= 'A' && *p <= 'Z')
+ *p += 'a' - 'A';
+ p++;
+ }
+#endif
+ }
}
#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 */
+ Vsystem_name = build_string (hostname);
+#endif /* HAVE_GETHOSTNAME */
#endif /* VMS */
-
+#endif /* BSD4_1 */
+ {
+ unsigned char *p;
+ for (p = XSTRING (Vsystem_name)->data; *p; p++)
+ if (*p == ' ' || *p == '\t')
+ *p = '-';
+ }
+}
\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++)
{
- /* 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)
+ 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++)
{
- /* 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;
- }
+ /* 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;
+ 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 */
#endif /* not BSTRING */
\f
#ifndef HAVE_RANDOM
-#ifdef USG
+#ifndef random
+
/*
* The BSD random returns numbers in the range of
* 0 to 2e31 - 1. The USG rand returns numbers in the
long
random ()
{
- /* Arrange to return a range centered on zero. */
- return (rand () << 15) + rand () - (1 << 29);
+#ifdef HAVE_LRAND48
+ return lrand48 ();
+#else
+/* The BSD rand returns numbers in the range of 0 to 2e31 - 1,
+ with unusable least significant bits. The USG rand returns
+ numbers in the range of 0 to 2e15 - 1, all usable. Let us
+ build a usable 30 bit number from either. */
+#ifdef USG
+ return (rand () << 15) + rand ();
+#else
+ return (rand () & 0x3fff8000) + (rand () >> 16);
+#endif
+#endif
}
srandom (arg)
int arg;
{
+#ifdef HAVE_LRAND48
+ return srand48 ();
+#else
srand (arg);
+#endif
}
-#endif /* USG */
-
-#ifdef BSD4_1
-long random ()
-{
- /* Arrange to return a range centered on zero. */
- return (rand () << 15) + rand () - (1 << 29);
-}
-
-srandom (arg)
- int arg;
-{
- srand (arg);
-}
-#endif /* BSD4_1 */
-#endif
+#endif /* no random */
+#endif /* not HAVE_RANDOM */
\f
#ifdef WRONG_NAME_INSQUE
#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
if (errno == EINTR)
continue;
else
- return (-1);
+ return (bytes_written ? bytes_written : -1);
}
buf += rtnval;
"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 */
+#ifdef SIGFREEZE
+ "Special Signal Used By CPR", /* 34 SIGFREEZE */
+#endif
+#ifdef SIGTHAW
+ "Special Signal Used By CPR", /* 35 SIGTHAW */
+#endif
+#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 != '/')
#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
/*
* 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;
dup2 (fd, 1);
dup2 (fd, 2);
}
- execl ("/bin/rmdir", "rmdir", 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)
+ return -1; /* /bin/rmdir failed */
+ default: /* Parent process */
+ while (cpid != wait (&status)); /* Wait for kid to finish */
}
- if (synch_process_death != 0 || synch_process_retcode != 0)
+ if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
{
errno = EIO; /* We don't know why, but */
- return -1; /* /bin/rmdir failed */
+ return -1; /* /bin/mkdir failed */
}
return 0;
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);