#include <signal.h>
#include <setjmp.h>
-#include "config.h"
+#include <config.h>
#include "lisp.h"
#include "blockinput.h"
#undef NULL
#include <sys/ioctl.h>
#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 */
EMACS_GET_TTY (input_fd, &buf);
#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)
#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
/* 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.
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 */
{
EMACS_SET_TTY_PGRP (input_fd, &pid);
}
-
+\f
/* Record a signal code and the handler for it. */
struct save_signal
{
#ifdef SIGTSTP
{
-#ifdef USG
- int pgrp = getpgrp ();
-#else
- int pgrp = getpgrp (0);
-#endif
+ int pgrp = EMACS_GETPGRP (0);
EMACS_KILLPG (pgrp, SIGTSTP);
}
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;
}
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);
}
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
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_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 */
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 */
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;
+ }
}
}
\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
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 */
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 != '/')
#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.
+ */
+int
+mkdir (dpath, dmode)
+ char *dpath;
+ int dmode;
+{
+ 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);
+ }
+ 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)
+ {
+ errno = EIO; /* We don't know why, but */
+ return -1; /* /bin/rmdir 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);