/* Interfaces to system-dependent kernel and library entries.
- Copyright (C) 1985, 86, 87, 88, 93, 94 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
#include <signal.h>
#include <sys/stat.h>
#include <errno.h>
+/* Get _POSIX_VDISABLE, if it is available. */
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#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>
+
+#if __DJGPP__ > 1
+extern int etext;
+extern unsigned start __asm__ ("start");
+#endif
#endif
extern int errno;
#endif
#endif
+#ifndef VFORK_RETURN_TYPE
+#define VFORK_RETURN_TYPE int
+#endif
+
/* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
#ifndef LPASS8
#define LPASS8 0
#endif /* not BSD, and not HPUX version >= 6 */
#endif /* not VMS */
#else /* not subprocesses */
+#if __DJGPP__ > 1
+ break;
+#else /* not __DJGPP__ > 1 */
#ifndef BSD4_1
if (kill (pid, 0) < 0)
break;
if (status == pid || status == -1)
break;
#endif /* BSD4_1 */
+#endif /* not __DJGPP__ > 1*/
#endif /* not subprocesses */
}
}
#ifdef IUCLC
s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */
#endif
+#ifdef ISTRIP
+ s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
+#endif
#ifdef OLCUC
s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */
#endif
+ s.main.c_oflag &= ~TAB3; /* Disable tab expansion */
s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
#if 0
/* Said to be unnecessary: */
#ifdef WINDOWSNT
pid = -1;
#else /* not WINDOWSNT */
- pid = vfork ();
+#ifdef MSDOS
+ pid = 0;
+#if __DJGPP__ > 1
+ save_signal_handlers (saved_handlers);
+ synch_process_alive = 1;
+#endif /* __DJGPP__ > 1 */
+#else
+ pid = vfork ();
if (pid == -1)
error ("Can't spawn subshell");
+#endif
+
if (pid == 0)
#endif /* not WINDOWSNT */
{
- char *sh;
+ char *sh = 0;
#ifdef MSDOS /* MW, Aug 1993 */
getwd (oldwd);
+ if (sh == 0)
+ sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
#endif
- sh = (char *) egetenv ("SHELL");
+ if (sh == 0)
+ sh = (char *) egetenv ("SHELL");
if (sh == 0)
sh = "sh";
#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
st = system (sh);
chdir (oldwd);
+#if 0 /* This is also reported if last command executed in subshell failed, KFS */
if (st)
report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil));
+#endif
#else /* not MSDOS */
#ifdef WINDOWSNT
- restore_console ();
-
/* Waits for process completion */
pid = _spawnlp (_P_WAIT, sh, sh, NULL);
if (pid == -1)
#endif /* not MSDOS */
}
+ /* Do this now if we did not do it before. */
+#if !defined (MSDOS) || __DJGPP__ == 1
save_signal_handlers (saved_handlers);
synch_process_alive = 1;
+#endif
+
+#ifndef MSDOS
wait_for_termination (pid);
+#endif
restore_signal_handlers (saved_handlers);
+ synch_process_alive = 0;
#endif /* !VMS */
}
/* Set the parameters of the tty on FD according to the contents of
- *SETTINGS. If WAITP is non-zero, we wait for all queued output to
- be written before making the change; otherwise, we forget any
- queued input and make the change immediately.
+ *SETTINGS. If FLUSHP is non-zero, we discard input.
Return 0 if all went well, and -1 if anything failed. */
+
int
-emacs_set_tty (fd, settings, waitp)
+emacs_set_tty (fd, settings, flushp)
int fd;
struct emacs_tty *settings;
- int waitp;
+ int flushp;
{
/* Set the primary parameters - baud rate, character size, etcetera. */
#ifdef HAVE_TCATTR
AIX requires this to keep tty from hanging occasionally." */
/* This make sure that we don't loop indefinitely in here. */
for (i = 0 ; i < 10 ; i++)
- if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0)
+ if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0)
{
if (errno == EINTR)
continue;
#else
#ifdef HAVE_TERMIO
/* The SYSV-style interface? */
- if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0)
+ if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0)
return -1;
#else
#else
#ifndef DOS_NT
/* I give up - I hope you have the BSD ioctls. */
- if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
+ if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
return -1;
#endif /* not DOS_NT */
/* The initial tty mode bits */
struct emacs_tty old_tty;
-int term_initted; /* 1 if outer tty status has been recorded */
+/* 1 if we have been through init_sys_modes. */
+int term_initted;
+
+/* 1 if outer tty status has been recorded. */
+int old_tty_valid;
#ifdef BSD4_1
/* BSD 4.1 needs to keep track of the lmode bits in order to start
narrow_foreground_group ();
#endif
-#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_WINDOW_SYSTEM
/* Emacs' window system on MSDOG uses the `internal terminal' and therefore
needs the initialization code below. */
if (!read_socket_hook && EQ (Vwindow_system, Qnil))
{
EMACS_GET_TTY (input_fd, &old_tty);
+ old_tty_valid = 1;
+
tty = old_tty;
#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
#endif
tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
+#ifdef INLCR /* I'm just being cautious,
+ since I can't check how widespread INLCR is--rms. */
+ tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */
+#endif
#ifdef ISTRIP
tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
#endif
#endif /* VSTOP */
#endif /* mips or HAVE_TCATTR */
#ifdef SET_LINE_DISCIPLINE
- /* Need to explicitely request TERMIODISC line discipline or
+ /* Need to explicitly request TERMIODISC line discipline or
Ultrix's termios does not work correctly. */
tty.main.c_line = SET_LINE_DISCIPLINE;
#endif
#endif
#if defined (HAVE_TERMIOS) || defined (HPUX9)
+#ifdef TCOON
if (!flow_control) tcflow (input_fd, TCOON);
#endif
+#endif
#ifdef AIXHFT
hft_init ();
#else
setbuf (stdout, _sobuf);
#endif
+#ifdef HAVE_WINDOW_SYSTEM
+ /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
+ needs the initialization code below. */
if (! read_socket_hook && EQ (Vwindow_system, Qnil))
+#endif
set_terminal_modes ();
if (term_initted && no_redraw_on_reenter)
}
if (!term_initted)
return;
-#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_WINDOW_SYSTEM
/* Emacs' window system on MSDOG uses the `internal terminal' and therefore
needs the clean-up code below. */
if (read_socket_hook || !EQ (Vwindow_system, Qnil))
return;
#endif
cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0);
-#ifdef MSDOS
- if (!EQ (Vwindow_system, Qnil))
- {
- /* Change to grey on white. */
- putchar ('\e');
- putchar ('A');
- putchar (7);
- }
-#endif
clear_end_of_line (FRAME_WIDTH (selected_frame));
/* clear_end_of_line may move the cursor */
cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0);
reset_sigio ();
#endif /* BSD4_1 */
- while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR)
- ;
+ if (old_tty_valid)
+ 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 ();
* 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
+ * at the normal shared text boundary and the startofdata variable
* will be patched by unexec to the correct value.
*
*/
uname (&uts);
Vsystem_name = build_string (uts.nodename);
#else /* HAVE_GETHOSTNAME */
- int hostname_size = 256;
+ unsigned int hostname_size = 256;
char *hostname = (char *) alloca (hostname_size);
/* Try to get the host name; if the buffer is too short, try
}
if (hp)
{
- char *fqdn = hp->h_name;
+ char *fqdn = (char *) hp->h_name;
char *p;
if (!index (fqdn, '.'))
}
}
\f
+#ifndef MSDOS
#ifndef VMS
-#ifndef HAVE_SELECT
+#if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
+
+#include "sysselect.h"
+#undef select
-#ifdef HAVE_X_WINDOWS
+#if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
/* Cause explanatory error message at compile time,
since the select emulation is not good enough for X. */
int *x = &x_windows_lose_if_no_select_system_call;
#ifndef WINDOWSNT
/* Only rfds are checked. */
int
-select (nfds, rfds, wfds, efds, timeout)
+sys_select (nfds, rfds, wfds, efds, timeout)
int nfds;
- int *rfds, *wfds, *efds, *timeout;
+ SELECT_TYPE *rfds, *wfds, *efds;
+ EMACS_TIME *timeout;
{
- int ravail = 0, orfds = 0, old_alarm;
- int timeoutval = timeout ? *timeout : 100000;
- int *local_timeout = &timeoutval;
+ int ravail = 0, old_alarm;
+ SELECT_TYPE orfds;
+ int timeoutval;
+ int *local_timeout;
extern int proc_buffered_char[];
#ifndef subprocesses
int process_tick = 0, update_tick = 0;
SIGTYPE (*old_trap) ();
unsigned char buf;
+#if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
+ /* If we're using X, then the native select will work; we only need the
+ emulation for non-X usage. */
+ if (!NILP (Vwindow_system))
+ return select (nfds, rfds, wfds, efds, timeout);
+#endif
+ timeoutval = timeout ? EMACS_SECS (*timeout) : 100000;
+ local_timeout = &timeoutval;
+ FD_ZERO (&orfds);
if (rfds)
{
orfds = *rfds;
- *rfds = 0;
+ FD_ZERO (rfds);
}
if (wfds)
- *wfds = 0;
+ FD_ZERO (wfds);
if (efds)
- *efds = 0;
+ FD_ZERO (efds);
/* If we are looking only for the terminal, with no timeout,
just read it and wait -- that's more efficient. */
- if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick)
+ if (*local_timeout == 100000 && process_tick == update_tick
+ && FD_ISSET (0, &orfds))
{
+ int fd;
+ for (fd = 1; fd < nfds; ++fd)
+ if (FD_ISSET (fd, &orfds))
+ goto hardway;
if (! detect_input_pending ())
read_input_waiting ();
- *rfds = 1;
+ FD_SET (0, rfds);
return 1;
}
+ hardway:
/* 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;
+ register int to_check, fd;
if (rfds)
{
- for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++)
+ for (to_check = nfds, fd = 0; --to_check >= 0; fd++)
{
- if (orfds & bit)
+ if (FD_ISSET (fd, &orfds))
{
int avail = 0, status = 0;
- if (bit == 1)
+ if (fd == 0)
avail = detect_input_pending (); /* Special keyboard handler */
else
{
#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)
{
- (*rfds) |= bit;
+ FD_SET (fd, rfds);
ravail++;
}
}
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. */
- if (orfds & 1)
+ if (FD_ISSET (0, &orfds))
{
read_input_waiting ();
if (detect_input_pending ())
}
else
pause ();
-#endif /* not MSDOS */
}
(*local_timeout) -= SELECT_PAUSE;
/* Reset the old alarm if there was one */
/* 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
+/* Make all keyboard buffers much bigger when using a window system. */
+#ifdef HAVE_WINDOW_SYSTEM
#define BUFFER_SIZE_FACTOR 16
#else
#define BUFFER_SIZE_FACTOR 1
/* 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)
+ && buf[i].code == quit_char)
break;
}
}
#endif /* not HAVE_SELECT */
#endif /* not VMS */
+#endif /* not MSDOS */
\f
#ifdef BSD4_1
/*
#endif /* POSIX_SIGNALS */
\f
-#ifndef BSTRING
-
-#ifndef bzero
-
-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 */
-}
-
-#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)
- 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 (&length, b1, b2);
-#else
- while (length-- > 0)
- *b2++ = *b1++;
-#endif /* not VMS */
-}
-#endif /* no bcopy */
-
-#ifndef bcmp
-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 /* no bcmp */
-
-#endif /* not BSTRING */
-\f
#ifndef HAVE_RANDOM
#ifdef random
#define HAVE_RANDOM
\f
#ifdef VMS
#ifdef LINK_CRTL_SHARE
-#ifdef SHAREABLE_LIB_BUG
+#ifdef SHARABLE_LIB_BUG
/* Variables declared noshare and initialized in sharable libraries
cannot be shared. The VMS linker incorrectly forces you to use a private
version which is uninitialized... If not for this "feature", we
"I/O stream empty",
"vax/vms specific error code nontranslatable error"
};
-#endif /* SHAREABLE_LIB_BUG */
+#endif /* SHARABLE_LIB_BUG */
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */
sys_close (fd)
int fd;
{
+ int did_retry = 0;
register int rtnval;
while ((rtnval = close (fd)) == -1
- && (errno == EINTR));
+ && (errno == EINTR))
+ did_retry = 1;
+
+ /* If close is interrupted SunOS 4.1 may or may not have closed the
+ file descriptor. If it did the second close will fail with
+ errno = EBADF. That means we have succeeded. */
+ if (rtnval == -1 && did_retry && errno == EBADF)
+ return 0;
+
return rtnval;
}
* Substitute fork for vfork on USG flavors.
*/
+VFORK_RETURN_TYPE
vfork ()
{
return (fork ());
#ifdef sun
"window size change", /* 20 SIGWINCH */
"urgent socket condition", /* 21 SIGURG */
- "pollable event occured", /* 22 SIGPOLL */
+ "pollable event occurred", /* 22 SIGPOLL */
"stop (cannot be caught or ignored)", /* 23 SIGSTOP */
"user stop requested from tty", /* 24 SIGTSTP */
"stopped process has been continued", /* 25 SIGCONT */
dup2 (fd, 1);
dup2 (fd, 2);
}
- wait_for_termination (cpid);
- if (synch_process_death != 0 || synch_process_retcode != 0)
- return -1; /* /bin/rmdir failed */
+ execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
+ _exit (-1); /* Can't exec /bin/rmdir */
+
default: /* Parent process */
- while (cpid != wait (&status)); /* Wait for kid to finish */
+ wait_for_termination (cpid);
}
- if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
+ if (synch_process_death != 0 || synch_process_retcode != 0)
{
errno = EIO; /* We don't know why, but */
- return -1; /* /bin/mkdir failed */
+ return -1; /* /bin/rmdir failed */
}
return 0;
/* Check write protection. */
#define CHECKPRIV(bit) (prvmask.bit)
-#define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
+#define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
/* Find privilege bits */
status = SYS$SETPRV (0, 0, 0, prvmask);
return -1;
SYS$CLOSE (&fab, 0, 0);
/* Check system access */
- if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS))
+ if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS))
return 0;
/* Check ACL entries, if any */
acl_controlled = 0;
return -1;
}
/* No ACL entries specified, check normal protection */
- if (WRITEABLE (XAB$V_WLD)) /* World writeable */
+ if (WRITABLE (XAB$V_WLD)) /* World writable */
return 0;
- if (WRITEABLE (XAB$V_GRP) &&
+ if (WRITABLE (XAB$V_GRP) &&
(unsigned short) (xab.xab$l_uic >> 16) == grpid)
- return 0; /* Group writeable */
- if (WRITEABLE (XAB$V_OWN) &&
+ return 0; /* Group writable */
+ if (WRITABLE (XAB$V_OWN) &&
(xab.xab$l_uic & 0xFFFF) == memid)
- return 0; /* Owner writeable */
+ return 0; /* Owner writable */
- return -1; /* Not writeable */
+ return -1; /* Not writable */
}
#endif /* not VMS4_4 */
#endif /* access */
retpw.pw_uid = up->uaf$w_mem;
retpw.pw_gid = up->uaf$w_grp;
- /* I suppose this is not the best sytle, to possibly overwrite one
+ /* I suppose this is not the best style, to possibly overwrite one
byte beyond the end of the field, but what the heck... */
ptr = &up->uaf$t_username[UAF$S_USERNAME];
while (ptr[-1] == ' ')
}
#endif /* USE_DL_STUBS */
+\f
+#ifndef BSTRING
+
+#ifndef bzero
+
+void
+bzero (b, length)
+ register char *b;
+ register int length;
+{
+#ifdef VMS
+ short zero = 0;
+ long max_str = 65535;
+
+ while (length > max_str) {
+ (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b);
+ length -= max_str;
+ b += max_str;
+ }
+ max_str = length;
+ (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b);
+#else
+ while (length-- > 0)
+ *b++ = 0;
+#endif /* not VMS */
+}
+
+#endif /* no bzero */
+#endif /* BSTRING */
+
+#if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
+#undef bcopy
+
+/* Saying `void' requires a declaration, above, where bcopy is used
+ and that declaration causes pain for systems where bcopy is a macro. */
+bcopy (b1, b2, length)
+ register char *b1;
+ register char *b2;
+ register int length;
+{
+#ifdef VMS
+ long max_str = 65535;
+
+ while (length > max_str) {
+ (void) LIB$MOVC3 (&max_str, b1, b2);
+ length -= max_str;
+ b1 += max_str;
+ b2 += max_str;
+ }
+ max_str = length;
+ (void) LIB$MOVC3 (&length, b1, b2);
+#else
+ while (length-- > 0)
+ *b2++ = *b1++;
+#endif /* not VMS */
+}
+#endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
+
+#ifndef BSTRING
+#ifndef bcmp
+int
+bcmp (b1, b2, length) /* This could be a macro! */
+ register char *b1;
+ register char *b2;
+ register int length;
+{
+#ifdef VMS
+ struct dsc$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 /* no bcmp */
+#endif /* not BSTRING */