/* Interfaces to system-dependent kernel and library entries.
- Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ Copyright (C) 1985-1988, 1993-1995, 1999-2011
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. If not, see <http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
-
#include <ctype.h>
#include <signal.h>
#include <stdio.h>
#include <pwd.h>
#include <grp.h>
#endif /* HAVE_PWD_H */
-#ifdef HAVE_LIMITS_H
#include <limits.h>
-#endif /* HAVE_LIMITS_H */
-#ifdef HAVE_UNISTD_H
#include <unistd.h>
-#endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif /* HAVE_ALLOCA_H */
-#include "lisp.h"
-/* Including stdlib.h isn't necessarily enough to get srandom
- declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
+#include <allocator.h>
+#include <careadlinkat.h>
+#include <ignore-value.h>
-/* The w32 build defines select stuff in w32.h, which is included by
- sys/select.h (included below). */
-#ifndef WINDOWSNT
+#include "lisp.h"
#include "sysselect.h"
-#endif
-
#include "blockinput.h"
#ifdef WINDOWSNT
#endif
#endif /* not WINDOWSNT */
-/* Does anyone other than VMS need this? */
-#ifndef fwrite
-#define sys_fwrite fwrite
-#else
-#undef fwrite
-#endif
-
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifdef HAVE_SETPGID
-#if !defined (USG) || defined (BSD_PGRPS)
+#if !defined (USG)
#undef setpgrp
#define setpgrp setpgid
#endif
#include "dosfns.h"
#include "msdos.h"
#include <sys/param.h>
-
-#if __DJGPP__ > 1
-extern int etext;
-extern unsigned start __asm__ ("start");
-#endif
-#endif
-
-#ifndef USE_CRT_DLL
-#ifndef errno
-extern int errno;
-#endif
#endif
#include <sys/file.h>
-
-#ifdef HAVE_FCNTL_H
#include <fcntl.h>
-#endif
-
-#ifndef MSDOS
-#include <sys/ioctl.h>
-#endif
#include "systty.h"
#include "syswait.h"
-#if defined (USG)
+#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#include <memory.h>
-#endif /* USG */
-
-extern int quit_char;
+#endif /* HAVE_SYS_UTSNAME_H */
#include "keyboard.h"
#include "frame.h"
#include "process.h"
#include "cm.h" /* for reset_sys_modes */
-/* For serial_configure and serial_open. */
-extern Lisp_Object QCport, QCspeed, QCprocess;
-extern Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven;
-extern Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary;
-
#ifdef WINDOWSNT
#include <direct.h>
/* In process.h which conflicts with the local copy. */
#endif
#endif
-/* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
-#ifndef LPASS8
-#define LPASS8 0
+static int emacs_get_tty (int, struct emacs_tty *);
+static int emacs_set_tty (int, struct emacs_tty *, int);
+#if defined TIOCNOTTY || defined USG5 || defined CYGWIN
+static void croak (char *) NO_RETURN;
#endif
+/* Declare here, including term.h is problematic on some systems. */
+extern void tputs (const char *, int, int (*)(int));
+
static const int baud_convert[] =
{
0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
1800, 2400, 4800, 9600, 19200, 38400
};
-#ifdef HAVE_SPEED_T
-#include <termios.h>
-#else
-#if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
-#else
-#if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
-#include <termios.h>
-#endif
-#endif
-#endif
-
-int emacs_ospeed;
-
-void croak P_ ((char *)) NO_RETURN;
-
-/* Temporary used by `sigblock' when defined in terms of signprocmask. */
-
-SIGMASKTYPE sigprocmask_set;
-
#if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
Any other returned value must be freed with free. This is used
only when get_current_dir_name is not defined on the system. */
char*
-get_current_dir_name ()
+get_current_dir_name (void)
{
char *buf;
char *pwd;
/* Discard pending input on all input descriptors. */
void
-discard_tty_input ()
+discard_tty_input (void)
{
#ifndef WINDOWSNT
struct emacs_tty buf;
{
if (tty->input) /* Is the device suspended? */
{
- EMACS_GET_TTY (fileno (tty->input), &buf);
- EMACS_SET_TTY (fileno (tty->input), &buf, 0);
+ emacs_get_tty (fileno (tty->input), &buf);
+ emacs_set_tty (fileno (tty->input), &buf, 0);
}
}
}
void
init_baud_rate (int fd)
{
+ int emacs_ospeed;
+
if (noninteractive)
emacs_ospeed = 0;
else
#ifdef DOS_NT
emacs_ospeed = 15;
#else /* not DOS_NT */
-#ifdef HAVE_TERMIOS
struct termios sg;
sg.c_cflag = B9600;
tcgetattr (fd, &sg);
emacs_ospeed = cfgetospeed (&sg);
-#else /* not TERMIOS */
-#ifdef HAVE_TERMIO
- struct termio sg;
-
- sg.c_cflag = B9600;
-#ifdef HAVE_TCATTR
- tcgetattr (fd, &sg);
-#else
- ioctl (fd, TCGETA, &sg);
-#endif
- emacs_ospeed = sg.c_cflag & CBAUD;
-#else /* neither TERMIOS nor TERMIO */
- struct sgttyb sg;
-
- sg.sg_ospeed = B9600;
- if (ioctl (fd, TIOCGETP, &sg) < 0)
- abort ();
- emacs_ospeed = sg.sg_ospeed;
-#endif /* not HAVE_TERMIO */
-#endif /* not HAVE_TERMIOS */
#endif /* not DOS_NT */
}
}
\f
-/*ARGSUSED*/
-void
-set_exclusive_use (fd)
- int fd;
-{
-#ifdef FIOCLEX
- ioctl (fd, FIOCLEX, 0);
-#endif
- /* Ok to do nothing if this feature does not exist */
-}
-\f
-#ifndef subprocesses
-wait_without_blocking ()
-{
-#ifdef BSD_SYSTEM
- wait3 (0, WNOHANG | WUNTRACED, 0);
-#else
- croak ("wait_without_blocking");
-#endif
- synch_process_alive = 0;
-}
+/* Set nonzero to make following function work under dbx
+ (at least for bsd). */
+int wait_debugging EXTERNALLY_VISIBLE;
-#endif /* not subprocesses */
-
-int wait_debugging; /* Set nonzero to make following function work under dbx
- (at least for bsd). */
-
-SIGTYPE
-wait_for_termination_signal ()
-{}
-
-/* Wait for subprocess with process id `pid' to terminate and
- make sure it will get eliminated (not remain forever as a zombie) */
+#ifndef MSDOS
-void
-wait_for_termination (pid)
- int pid;
+static void
+wait_for_termination_1 (int pid, int interruptible)
{
while (1)
{
-#ifdef subprocesses
#if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined(__GNU__)
/* Note that kill returns -1 even if the process is just a zombie now.
But inevitably a SIGCHLD interrupt should be generated
else
sigpause (SIGEMPTYMASK);
#else /* not BSD_SYSTEM, and not HPUX version >= 6 */
-#ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
+#ifdef WINDOWSNT
+ wait (0);
+ break;
+#else /* not WINDOWSNT */
sigblock (sigmask (SIGCHLD));
errno = 0;
if (kill (pid, 0) == -1 && errno == ESRCH)
}
sigsuspend (&empty_mask);
-#else /* not POSIX_SIGNALS */
-#ifdef HAVE_SYSV_SIGPAUSE
- sighold (SIGCHLD);
- if (0 > kill (pid, 0))
- {
- sigrelse (SIGCHLD);
- break;
- }
- sigpause (SIGCHLD);
-#else /* not HAVE_SYSV_SIGPAUSE */
-#ifdef WINDOWSNT
- wait (0);
- break;
-#else /* not WINDOWSNT */
- 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 WINDOWSNT */
-#endif /* not HAVE_SYSV_SIGPAUSE */
-#endif /* not POSIX_SIGNALS */
#endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
-#else /* not subprocesses */
-#if __DJGPP__ > 1
- break;
-#else /* not __DJGPP__ > 1 */
- if (kill (pid, 0) < 0)
- break;
- wait (0);
-#endif /* not __DJGPP__ > 1*/
-#endif /* not subprocesses */
+ if (interruptible)
+ QUIT;
}
}
-#ifdef subprocesses
+/* Wait for subprocess with process id `pid' to terminate and
+ make sure it will get eliminated (not remain forever as a zombie) */
+
+void
+wait_for_termination (int pid)
+{
+ wait_for_termination_1 (pid, 0);
+}
+
+/* Like the above, but allow keyboard interruption. */
+void
+interruptible_wait_for_termination (int pid)
+{
+ wait_for_termination_1 (pid, 1);
+}
/*
* flush any pending output
*/
void
-flush_pending_output (channel)
- int channel;
+flush_pending_output (int channel)
{
-#ifdef HAVE_TERMIOS
- /* If we try this, we get hit with SIGTTIN, because
- the child's tty belongs to the child's pgrp. */
-#else
-#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
-#endif
+ /* FIXME: maybe this function should be removed */
}
\f
/* Set up the terminal at the other end of a pseudo-terminal that
in Emacs. No padding needed for insertion into an Emacs buffer. */
void
-child_setup_tty (out)
- int out;
+child_setup_tty (int out)
{
-#ifndef DOS_NT
+#ifndef WINDOWSNT
struct emacs_tty s;
- EMACS_GET_TTY (out, &s);
-
-#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
+ emacs_get_tty (out, &s);
s.main.c_oflag |= OPOST; /* Enable output postprocessing */
s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
#ifdef NLDLY
#endif
s.main.c_oflag &= ~TAB3; /* Disable tab expansion */
s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
- s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */
- s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */
s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */
s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */
#endif /* not SIGNALS_VIA_CHARACTERS */
#ifdef AIX
-/* AIX enhanced edit loses NULs, so disable it */
-#ifndef IBMR2AIX
- s.main.c_line = 0;
- s.main.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.main.c_iflag &= ~IGNBRK;
/* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
would force it to 0377. That looks like duplicated code. */
- s.main.c_cc[VEOL] = CDISABLE;
s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
#endif /* AIX */
-#else /* not HAVE_TERMIO */
-
- 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 (out, &s, 0);
-
-#endif /* not DOS_NT */
+ /* We originally enabled ICANON (and set VEOF to 04), and then had
+ proces.c send additional EOF chars to flush the output when faced
+ with long lines, but this leads to weird effects when the
+ subprocess has disabled ICANON and ends up seeing those spurious
+ extra EOFs. So we don't send EOFs any more in
+ process.c:send_process. First we tried to disable ICANON by
+ default, so if a subsprocess sets up ICANON, it's his problem (or
+ the Elisp package that talks to it) to deal with lines that are
+ too long. But this disables some features, such as the ability
+ to send EOF signals. So we re-enabled ICANON but there is no
+ more "send eof to flush" going on (which is wrong and unportable
+ in itself). The correct way to handle too much output is to
+ buffer what could not be written and then write it again when
+ select returns ok for writing. This has it own set of
+ problems. Write is now asynchronous, is that a problem? How much
+ do we buffer, and what do we do when that limit is reached? */
+
+ s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */
+ s.main.c_cc[VEOF] = 'D'&037; /* Control-D */
+#if 0 /* These settings only apply to non-ICANON mode. */
+ s.main.c_cc[VMIN] = 1;
+ s.main.c_cc[VTIME] = 0;
+#endif
+
+ emacs_set_tty (out, &s, 0);
+#endif /* not WINDOWSNT */
}
+#endif /* not MSDOS */
-#endif /* subprocesses */
\f
/* Record a signal code and the handler for it. */
struct save_signal
{
int code;
- SIGTYPE (*handler) P_ ((int));
+ void (*handler) (int);
};
-static void save_signal_handlers P_ ((struct save_signal *));
-static void restore_signal_handlers P_ ((struct save_signal *));
+static void save_signal_handlers (struct save_signal *);
+static void restore_signal_handlers (struct save_signal *);
/* Suspend the Emacs process; give terminal to its superior. */
void
-sys_suspend ()
+sys_suspend (void)
{
#if defined (SIGTSTP) && !defined (MSDOS)
/* Fork a subshell. */
void
-sys_subshell ()
+sys_subshell (void)
{
#ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
int st;
int pid;
struct save_signal saved_handlers[5];
Lisp_Object dir;
- unsigned char *str = 0;
+ unsigned char *volatile str_volatile = 0;
+ unsigned char *str;
int len;
saved_handlers[0].code = SIGINT;
goto xyzzy;
dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil);
- str = (unsigned char *) alloca (SCHARS (dir) + 2);
+ str_volatile = str = (unsigned char *) alloca (SCHARS (dir) + 2);
len = SCHARS (dir);
- bcopy (SDATA (dir), str, len);
+ memcpy (str, SDATA (dir), len);
if (str[len - 1] != '/') str[len++] = '/';
str[len] = 0;
xyzzy:
#ifdef DOS_NT
pid = 0;
-#if __DJGPP__ > 1
save_signal_handlers (saved_handlers);
synch_process_alive = 1;
-#endif /* __DJGPP__ > 1 */
#else
pid = vfork ();
if (pid == -1)
if (pid == 0)
{
- char *sh = 0;
+ const char *sh = 0;
#ifdef DOS_NT /* MW, Aug 1993 */
getwd (oldwd);
sh = "sh";
/* Use our buffer's default directory for the subshell. */
- if (str)
- chdir ((char *) str);
-
-#ifdef subprocesses
- close_process_descs (); /* Close Emacs's pipes/ptys */
+ str = str_volatile;
+ if (str && chdir ((char *) str) != 0)
+ {
+#ifndef DOS_NT
+ ignore_value (write (1, "Can't chdir\n", 12));
+ _exit (1);
#endif
+ }
-#ifdef SET_EMACS_PRIORITY
- {
- extern EMACS_INT emacs_priority;
-
- if (emacs_priority < 0)
- nice (-emacs_priority);
- }
-#endif
+ close_process_descs (); /* Close Emacs's pipes/ptys */
#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
{
setenv ("PWD", str, 1);
}
st = system (sh);
- chdir (oldwd);
+ chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */
if (epwd)
putenv (old_pwd); /* restore previous value */
}
#ifdef WINDOWSNT
/* Waits for process completion */
pid = _spawnlp (_P_WAIT, sh, sh, NULL);
- chdir (oldwd);
+ chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */
if (pid == -1)
write (1, "Can't execute subshell", 22);
#else /* not WINDOWSNT */
execlp (sh, sh, (char *) 0);
- write (1, "Can't execute subshell", 22);
+ ignore_value (write (1, "Can't execute subshell", 22));
_exit (1);
#endif /* not WINDOWSNT */
#endif /* not MSDOS */
}
/* Do this now if we did not do it before. */
-#if !defined (MSDOS) || __DJGPP__ == 1
+#ifndef MSDOS
save_signal_handlers (saved_handlers);
synch_process_alive = 1;
#endif
}
static void
-save_signal_handlers (saved_handlers)
- struct save_signal *saved_handlers;
+save_signal_handlers (struct save_signal *saved_handlers)
{
while (saved_handlers->code)
{
saved_handlers->handler
- = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN);
+ = (void (*) (int)) signal (saved_handlers->code, SIG_IGN);
saved_handlers++;
}
}
static void
-restore_signal_handlers (saved_handlers)
- struct save_signal *saved_handlers;
+restore_signal_handlers (struct save_signal *saved_handlers)
{
while (saved_handlers->code)
{
{
}
-void
+static void
reset_sigio (int fd)
{
}
#else
#ifdef F_SETFL
-int old_fcntl_flags[MAXDESC];
+static int old_fcntl_flags[MAXDESC];
void
-init_sigio (fd)
- int fd;
+init_sigio (int fd)
{
#ifdef FASYNC
old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC;
interrupts_deferred = 0;
}
-void
-reset_sigio (fd)
- int fd;
+static void
+reset_sigio (int fd)
{
#ifdef FASYNC
fcntl (fd, F_SETFL, old_fcntl_flags[fd]);
/* XXX Yeah, but you need it for SIGIO, don't you? */
void
-request_sigio ()
+request_sigio (void)
{
if (noninteractive)
return;
void
unrequest_sigio (void)
-{
+{
if (noninteractive)
return;
#ifndef MSDOS
void
-request_sigio ()
+request_sigio (void)
{
if (noninteractive || read_socket_hook)
return;
}
void
-unrequest_sigio ()
+unrequest_sigio (void)
{
if (noninteractive || read_socket_hook)
return;
#endif /* FASYNC */
#endif /* F_SETFL */
#endif /* SIGIO */
-\f
-/* Saving and restoring the process group of Emacs's terminal. */
-
-#ifdef BSD_PGRPS
-
-/* The process group of which Emacs was a member when it initially
- started.
-
- If Emacs was in its own process group (i.e. inherited_pgroup ==
- getpid ()), then we know we're running under a shell with job
- control (Emacs would never be run as part of a pipeline).
- Everything is fine.
-
- If Emacs was not in its own process group, then we know we're
- running under a shell (or a caller) that doesn't know how to
- separate itself from Emacs (like sh). Emacs must be in its own
- process group in order to receive SIGIO correctly. In this
- situation, we put ourselves in our own pgroup, forcibly set the
- tty's pgroup to our pgroup, and make sure to restore and reinstate
- the tty's pgroup just like any other terminal setting. If
- inherited_group was not the tty's pgroup, then we'll get a
- SIGTTmumble when we try to change the tty's pgroup, and a CONT if
- it goes foreground in the future, which is what should happen.
-
- This variable is initialized in emacs.c. */
-int inherited_pgroup;
-
-/* Split off the foreground process group to Emacs alone. When we are
- in the foreground, but not started in our own process group,
- redirect the tty device handle FD to point to our own process
- group. We need to be in our own process group to receive SIGIO
- properly. */
-static void
-narrow_foreground_group (int fd)
-{
- int me = getpid ();
- setpgrp (0, inherited_pgroup);
-#if 0
- /* XXX inherited_pgroup should not be zero here, but GTK seems to
- mess this up. */
- if (! inherited_pgroup)
- abort (); /* Should not happen. */
-#endif
- if (inherited_pgroup != me)
- EMACS_SET_TTY_PGRP (fd, &me); /* XXX This only works on the controlling tty. */
- setpgrp (0, me);
-}
-
-/* Set the tty to our original foreground group. */
-static void
-widen_foreground_group (int fd)
-{
- if (inherited_pgroup != getpid ())
- EMACS_SET_TTY_PGRP (fd, &inherited_pgroup);
- setpgrp (0, inherited_pgroup);
-}
-
-#endif /* BSD_PGRPS */
\f
/* Getting and setting emacs_tty structures. */
Return zero if all's well, or -1 if we ran into an error we
couldn't deal with. */
int
-emacs_get_tty (fd, settings)
- int fd;
- struct emacs_tty *settings;
+emacs_get_tty (int fd, struct emacs_tty *settings)
{
/* Retrieve the primary parameters - baud rate, character size, etcetera. */
-#ifdef HAVE_TCATTR
+#ifndef DOS_NT
/* We have those nifty POSIX tcmumbleattr functions. */
- bzero (&settings->main, sizeof (settings->main));
+ memset (&settings->main, 0, sizeof (settings->main));
if (tcgetattr (fd, &settings->main) < 0)
return -1;
-
-#else
-#ifdef HAVE_TERMIO
- /* The SYSV-style interface? */
- if (ioctl (fd, TCGETA, &settings->main) < 0)
- return -1;
-
-#else
-#ifndef DOS_NT
- /* I give up - I hope you have the BSD ioctls. */
- if (ioctl (fd, TIOCGETP, &settings->main) < 0)
- return -1;
-#endif /* not DOS_NT */
-#endif
-#endif
-
- /* Suivant - Do we have to get struct ltchars data? */
-#ifdef HAVE_LTCHARS
- if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0)
- return -1;
-#endif
-
- /* How about a struct tchars and a wordful of lmode bits? */
-#ifdef HAVE_TCHARS
- if (ioctl (fd, TIOCGETC, &settings->tchars) < 0
- || ioctl (fd, TIOCLGET, &settings->lmode) < 0)
- return -1;
#endif
/* We have survived the tempest. */
Return 0 if all went well, and -1 if anything failed. */
int
-emacs_set_tty (fd, settings, flushp)
- int fd;
- struct emacs_tty *settings;
- int flushp;
+emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
{
/* Set the primary parameters - baud rate, character size, etcetera. */
-#ifdef HAVE_TCATTR
+#ifndef DOS_NT
int i;
/* We have those nifty POSIX tcmumbleattr functions.
William J. Smith <wjs@wiis.wang.com> writes:
{
struct termios new;
- bzero (&new, sizeof (new));
+ memset (&new, 0, sizeof (new));
/* Get the current settings, and see if they're what we asked for. */
tcgetattr (fd, &new);
/* We cannot use memcmp on the whole structure here because under
else
continue;
}
-
-#else
-#ifdef HAVE_TERMIO
- /* The SYSV-style interface? */
- if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0)
- return -1;
-
-#else
-#ifndef DOS_NT
- /* I give up - I hope you have the BSD ioctls. */
- if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
- return -1;
-#endif /* not DOS_NT */
-
-#endif
-#endif
-
- /* Suivant - Do we have to get struct ltchars data? */
-#ifdef HAVE_LTCHARS
- if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0)
- return -1;
-#endif
-
- /* How about a struct tchars and a wordful of lmode bits? */
-#ifdef HAVE_TCHARS
- if (ioctl (fd, TIOCSETC, &settings->tchars) < 0
- || ioctl (fd, TIOCLSET, &settings->lmode) < 0)
- return -1;
#endif
/* We have survived the tempest. */
\f
#ifdef F_SETOWN
-int old_fcntl_owner[MAXDESC];
+static int old_fcntl_owner[MAXDESC];
#endif /* F_SETOWN */
/* This may also be defined in stdio,
char _sobuf[BUFSIZ];
#endif
-#ifdef HAVE_LTCHARS
-static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1};
-#endif
-#ifdef HAVE_TCHARS
-static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1};
-#endif
-
/* Initialize the terminal mode on all tty devices that are currently
open. */
/* Initialize the terminal mode on the given tty device. */
void
-init_sys_modes (tty_out)
- struct tty_display_info *tty_out;
+init_sys_modes (struct tty_display_info *tty_out)
{
struct emacs_tty tty;
if (!tty_out->output)
return; /* The tty is suspended. */
-
-#ifdef BSD_PGRPS
-#if 0
- /* read_socket_hook is not global anymore. I think doing this
- unconditionally will not cause any problems. */
- if (! read_socket_hook && EQ (Vinitial_window_system, Qnil))
-#endif
- narrow_foreground_group (fileno (tty_out->input));
-#endif
if (! tty_out->old_tty)
tty_out->old_tty = (struct emacs_tty *) xmalloc (sizeof (struct emacs_tty));
-
- EMACS_GET_TTY (fileno (tty_out->input), tty_out->old_tty);
+
+ emacs_get_tty (fileno (tty_out->input), tty_out->old_tty);
tty = *tty_out->old_tty;
-#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
+#if !defined (DOS_NT)
XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]);
tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
means that the interrupt and quit feature must be
disabled on secondary ttys, or we would not even see the
keypress.
-
+
Note that even though emacsclient could have special code
to pass SIGINT to Emacs, we should _not_ enable
interrupt/quit keys for emacsclient frames. This means
tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use
of C-z */
#endif /* VSWTCH */
-
-#if defined (__mips__) || defined (HAVE_TCATTR)
+
#ifdef VSUSP
- tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */
+ tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */
#endif /* VSUSP */
#ifdef V_DSUSP
- tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */
+ tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */
#endif /* V_DSUSP */
#ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
tty.main.c_cc[VDSUSP] = CDISABLE;
tty.main.c_cc[VSTOP] = CDISABLE;
#endif /* VSTOP */
}
-#endif /* mips or HAVE_TCATTR */
#ifdef AIX
-#ifndef IBMR2AIX
- /* AIX enhanced edit loses NULs, so disable it. */
- tty.main.c_line = 0;
- tty.main.c_iflag &= ~ASCEDIT;
-#else
tty.main.c_cc[VSTRT] = CDISABLE;
tty.main.c_cc[VSTOP] = CDISABLE;
tty.main.c_cc[VSUSP] = CDISABLE;
tty.main.c_cc[VDSUSP] = CDISABLE;
-#endif /* IBMR2AIX */
if (tty_out->flow_control)
{
#ifdef VSTART
tty.main.c_iflag &= ~IGNBRK;
tty.main.c_iflag &= ~BRKINT;
#endif
-#else /* if not HAVE_TERMIO */
-#ifndef DOS_NT
- XSETINT (Vtty_erase_char, tty.main.sg_erase);
- tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS);
- if (meta_key)
- tty.main.sg_flags |= ANYP;
- tty.main.sg_flags |= interrupt_input ? RAW : CBREAK;
#endif /* not DOS_NT */
-#endif /* not HAVE_TERMIO */
-
- /* 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. */
-#ifndef HAVE_TERMIO
-#ifdef HAVE_TCHARS
- /* Note: if not using CBREAK mode, it makes no difference how we
- set this */
- tty.tchars = new_tchars;
- tty.tchars.t_intrc = quit_char;
- if (tty_out->flow_control)
- {
- tty.tchars.t_startc = '\021';
- tty.tchars.t_stopc = '\023';
- }
-
- tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | tty_out->old_tty.lmode;
-
-#endif /* HAVE_TCHARS */
-#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 */
if (!tty_out->term_initted)
internal_terminal_init ();
dos_ttraw (tty_out);
#endif
- EMACS_SET_TTY (fileno (tty_out->input), &tty, 0);
+ emacs_set_tty (fileno (tty_out->input), &tty, 0);
/* This code added to insure that, if flow-control is not to be used,
we have an unlocked terminal at the start. */
if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0);
#endif
-#if defined (HAVE_TERMIOS) || defined (HPUX)
+#if !defined (DOS_NT)
#ifdef TCOON
if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON);
#endif
if (tty_out->term_initted && no_redraw_on_reenter)
{
- /* XXX This seems wrong on multi-tty. */
- if (display_completed)
- direct_output_forward_char (0);
+ /* We used to call "direct_output_forward_char(0)" here,
+ but it's not clear why, since it may not do anything anyway. */
}
else
{
{
struct emacs_tty etty;
- EMACS_GET_TTY (fd, &etty);
- return EMACS_TTY_TABS_OK (&etty);
+ emacs_get_tty (fd, &etty);
+#ifndef DOS_NT
+#ifdef TABDLY
+ return ((etty.main.c_oflag & TABDLY) != TAB3);
+#else /* not TABDLY */
+ return 1;
+#endif /* not TABDLY */
+#else /* DOS_NT */
+ return 0;
+#endif /* DOS_NT */
}
\f
/* Get terminal size from system.
void
get_tty_size (int fd, int *widthp, int *heightp)
{
-
-#ifdef TIOCGWINSZ
+#if defined TIOCGWINSZ
/* BSD-style. */
struct winsize size;
*heightp = size.ws_row;
}
-#else
-#ifdef TIOCGSIZE
+#elif defined TIOCGSIZE
/* SunOS - style. */
struct ttysize size;
*heightp = size.ts_lines;
}
-#else
-#ifdef MSDOS
+#elif defined WINDOWSNT
+
+ CONSOLE_SCREEN_BUFFER_INFO info;
+ if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info))
+ {
+ *widthp = info.srWindow.Right - info.srWindow.Left + 1;
+ *heightp = info.srWindow.Bottom - info.srWindow.Top + 1;
+ }
+ else
+ *widthp = *heightp = 0;
+
+#elif defined MSDOS
+
*widthp = ScreenCols ();
*heightp = ScreenRows ();
+
#else /* system doesn't know size */
+
*widthp = 0;
*heightp = 0;
+
#endif
-#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;
+set_window_size (int fd, int height, int width)
{
#ifdef TIOCSWINSZ
bottom of the frame, turn off interrupt-driven I/O, etc. */
void
-reset_sys_modes (tty_out)
- struct tty_display_info *tty_out;
+reset_sys_modes (struct tty_display_info *tty_out)
{
if (noninteractive)
{
if (!tty_out->output)
return; /* The tty is suspended. */
-
+
/* Go to and clear the last line of the terminal. */
cmgoto (tty_out, FrameRows (tty_out) - 1, 0);
-
+
/* Code adapted from tty_clear_end_of_line. */
if (tty_out->TS_clr_line)
{
{ /* have to do it the hard way */
int i;
tty_turn_off_insert (tty_out);
-
+
for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++)
{
fputc (' ', tty_out->output);
}
}
-
+
cmgoto (tty_out, FrameRows (tty_out) - 1, 0);
fflush (tty_out->output);
-
+
if (tty_out->terminal->reset_terminal_modes_hook)
tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal);
#endif /* F_SETFL */
if (tty_out->old_tty)
- while (EMACS_SET_TTY (fileno (tty_out->input),
+ while (emacs_set_tty (fileno (tty_out->input),
tty_out->old_tty, 0) < 0 && errno == EINTR)
;
dos_ttcooked ();
#endif
-#ifdef BSD_PGRPS
- widen_foreground_group (fileno (tty_out->input));
-#endif
}
\f
#ifdef HAVE_PTYS
/* Set up the proper status flags for use of a pty. */
void
-setup_pty (fd)
- int fd;
+setup_pty (int fd)
{
/* I'm told that TOICREMOTE does not mean control chars
"can't be sent" but rather that they don't have
}
#endif /* HAVE_PTYS */
\f
-#if !defined(CANNOT_DUMP) || !defined(SYSTEM_MALLOC)
-/* 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.
- *
- */
-
-#if !(defined (__NetBSD__) && defined (__ELF__))
-#ifndef HAVE_TEXT_START
-char *
-start_of_text ()
-{
-#ifdef TEXT_START
- return ((char *) TEXT_START);
-#else
- extern int _start ();
- return ((char *) _start);
-#endif /* TEXT_START */
-}
-#endif /* not HAVE_TEXT_START */
-#endif
-
-/*
- * 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 boundary and the startofdata variable
- * will be patched by unexec to the correct value.
- *
- */
-
-#ifndef start_of_data
-char *
-start_of_data ()
-{
-#ifdef DATA_START
- return ((char *) DATA_START);
-#else
-#ifdef ORDINARY_LINK
- /*
- * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
- * data_start isn't defined. We take the address of environ, which
- * is known to live at or near the start of the system crt0.c, and
- * we don't sweat the handful of bytes that might lose.
- */
- extern char **environ;
-
- return ((char *) &environ);
-#else
- extern int data_start;
- return ((char *) &data_start);
-#endif /* ORDINARY_LINK */
-#endif /* DATA_START */
-}
-#endif /* start_of_data */
-#endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
-\f
-/* init_system_name sets up the string for the Lisp function
- system-name to return. */
-
-extern Lisp_Object Vsystem_name;
-
#ifdef HAVE_SOCKETS
#include <sys/socket.h>
#include <netdb.h>
#endif /* TRY_AGAIN */
void
-init_system_name ()
+init_system_name (void)
{
#ifndef HAVE_GETHOSTNAME
struct utsname uts;
#ifndef CANNOT_DUMP
if (initialized)
#endif /* not CANNOT_DUMP */
- if (! index (hostname, '.'))
+ if (! strchr (hostname, '.'))
{
int count;
#ifdef HAVE_GETADDRINFO
struct addrinfo hints;
int ret;
- memset (&hints, 0, sizeof(hints));
+ memset (&hints, 0, sizeof (hints));
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
while (it)
{
char *fqdn = it->ai_canonname;
- if (fqdn && index (fqdn, '.')
+ if (fqdn && strchr (fqdn, '.')
&& strcmp (fqdn, "localhost.localdomain") != 0)
break;
it = it->ai_next;
{
char *fqdn = (char *) hp->h_name;
- if (!index (fqdn, '.'))
+ if (!strchr (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, '.')
+ && (!strchr (*alias, '.')
|| !strcmp (*alias, "localhost.localdomain")))
alias++;
if (*alias)
}
}
\f
-#ifndef MSDOS
-#if !defined (HAVE_SELECT)
-
-#include "sysselect.h"
-#undef select
-
-#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;
-#endif
-
-/* 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;
-
-SIGTYPE
-select_alarm ()
-{
- select_alarmed = 1;
- signal (SIGALRM, SIG_IGN);
- SIGNAL_THREAD_CHECK (SIGALRM);
- if (read_alarm_should_throw)
- longjmp (read_alarm_throw, 1);
-}
-
-#ifndef WINDOWSNT
-/* Only rfds are checked. */
-int
-sys_select (nfds, rfds, wfds, efds, timeout)
- int nfds;
- SELECT_TYPE *rfds, *wfds, *efds;
- EMACS_TIME *timeout;
-{
- /* XXX This needs to be updated for multi-tty support. Is there
- anybody who needs to emulate select these days? */
- int ravail = 0;
- SELECT_TYPE orfds;
- int timeoutval;
- int *local_timeout;
- extern int proc_buffered_char[];
-#ifndef subprocesses
- int process_tick = 0, update_tick = 0;
-#else
- extern int process_tick, update_tick;
-#endif
- 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 (Vinitial_window_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;
- FD_ZERO (rfds);
- }
- if (wfds)
- FD_ZERO (wfds);
- if (efds)
- FD_ZERO (efds);
-
- /* If we are looking only for the terminal, with no timeout,
- just read it and wait -- that's more efficient. */
- 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 ();
- 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, fd;
-
- if (rfds)
- {
- for (to_check = nfds, fd = 0; --to_check >= 0; fd++)
- {
- if (FD_ISSET (fd, &orfds))
- {
- int avail = 0, status = 0;
-
- if (fd == 0)
- 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)
- {
- FD_SET (fd, rfds);
- ravail++;
- }
- }
- }
- }
- if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick)
- break;
-
- turn_on_atimers (0);
- 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 (FD_ISSET (0, &orfds))
- {
- read_input_waiting ();
- if (detect_input_pending ())
- select_alarmed = 1;
- }
- else
- pause ();
- }
- (*local_timeout) -= SELECT_PAUSE;
-
- /* Reset the old alarm if there was one. */
- turn_on_atimers (1);
-
- if (*local_timeout == 0) /* Stop on timer being cleared */
- break;
- }
- return ravail;
-}
-#endif /* not WINDOWSNT */
-
-/* Read keyboard input into the standard buffer,
- waiting for at least one character. */
-
-void
-read_input_waiting ()
-{
- /* XXX This needs to be updated for multi-tty support. Is there
- anybody who needs to emulate select these days? */
- int nread, i;
- extern int quit_char;
-
- if (read_socket_hook)
- {
- struct input_event hold_quit;
-
- EVENT_INIT (hold_quit);
- hold_quit.kind = NO_EVENT;
-
- read_alarm_should_throw = 0;
- if (! setjmp (read_alarm_throw))
- nread = (*read_socket_hook) (0, 1, &hold_quit);
- else
- nread = -1;
-
- if (hold_quit.kind != NO_EVENT)
- kbd_buffer_store_event (&hold_quit);
- }
- else
- {
- struct input_event e;
- char buf[3];
- nread = read (fileno (stdin), buf, 1);
- EVENT_INIT (e);
-
- /* Scan the chars for C-g and store them in kbd_buffer. */
- e.kind = ASCII_KEYSTROKE_EVENT;
- 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;
- }
-
- XSETINT (e.code, 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;
- }
- }
-}
-
-#if !defined (HAVE_SELECT)
-#define select sys_select
-#endif
-
-#endif /* not HAVE_SELECT */
-#endif /* not MSDOS */
-\f
/* POSIX signals support - DJB */
/* Anyone with POSIX signals should have ANSI C declarations */
-#ifdef POSIX_SIGNALS
+sigset_t empty_mask;
-sigset_t empty_mask, full_mask;
+#ifndef WINDOWSNT
signal_handler_t
sys_signal (int signal_number, signal_handler_t action)
return (old_action.sa_handler);
}
+#endif /* WINDOWSNT */
+
#ifndef __GNUC__
/* If we're compiling with GCC, we don't need this function, since it
can be written as a macro. */
sys_sigblock (sigset_t new_mask)
{
sigset_t old_mask;
- sigprocmask (SIG_BLOCK, &new_mask, &old_mask);
+ pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
return (old_mask);
}
sys_sigunblock (sigset_t new_mask)
{
sigset_t old_mask;
- sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask);
+ pthread_sigmask (SIG_UNBLOCK, &new_mask, &old_mask);
return (old_mask);
}
sys_sigsetmask (sigset_t new_mask)
{
sigset_t old_mask;
- sigprocmask (SIG_SETMASK, &new_mask, &old_mask);
+ pthread_sigmask (SIG_SETMASK, &new_mask, &old_mask);
return (old_mask);
}
-#endif /* POSIX_SIGNALS */
\f
#if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
static char *my_sys_siglist[NSIG];
#endif
void
-init_signals ()
+init_signals (void)
{
-#ifdef POSIX_SIGNALS
sigemptyset (&empty_mask);
- sigfillset (&full_mask);
-#endif
#if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
if (! initialized)
#endif /* !RAND_BITS */
void
-seed_random (arg)
- long arg;
+seed_random (long int arg)
{
#ifdef HAVE_RANDOM
srandom ((unsigned int)arg);
}
/*
- * Build a full Emacs-sized word out of whatever we've got.
+ * Return a nonnegative random integer out of whatever we've got.
+ * It contains enough bits to make a random (signed) Emacs fixnum.
* This suffices even for a 64-bit architecture with a 15-bit rand.
*/
-long
-get_random ()
-{
- long val = random ();
-#if VALBITS > RAND_BITS
- val = (val << RAND_BITS) ^ random ();
-#if VALBITS > 2*RAND_BITS
- val = (val << RAND_BITS) ^ random ();
-#if VALBITS > 3*RAND_BITS
- val = (val << RAND_BITS) ^ random ();
-#if VALBITS > 4*RAND_BITS
- val = (val << RAND_BITS) ^ random ();
-#endif /* need at least 5 */
-#endif /* need at least 4 */
-#endif /* need at least 3 */
-#endif /* need at least 2 */
- return val & ((1L << VALBITS) - 1);
+EMACS_INT
+get_random (void)
+{
+ EMACS_UINT val = 0;
+ int i;
+ for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++)
+ val = (random () ^ (val << RAND_BITS)
+ ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS)));
+ val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS);
+ return val & INTMASK;
}
#ifndef HAVE_STRERROR
#ifndef WINDOWSNT
char *
-strerror (errnum)
- int errnum;
+strerror (int errnum)
{
extern char *sys_errlist[];
extern int sys_nerr;
#endif /* ! HAVE_STRERROR */
\f
int
-emacs_open (path, oflag, mode)
- const char *path;
- int oflag, mode;
+emacs_open (const char *path, int oflag, int mode)
{
register int rtnval;
}
int
-emacs_close (fd)
- int fd;
+emacs_close (int fd)
{
int did_retry = 0;
register int rtnval;
return rtnval;
}
-int
-emacs_read (fildes, buf, nbyte)
- int fildes;
- char *buf;
- unsigned int nbyte;
+/* Maximum number of bytes to read or write in a single system call.
+ This works around a serious bug in Linux kernels before 2.6.16; see
+ <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
+ It's likely to work around similar bugs in other operating systems, so do it
+ on all platforms. Round INT_MAX down to a page size, with the conservative
+ assumption that page sizes are at most 2**18 bytes (any kernel with a
+ page size larger than that shouldn't have the bug). */
+#ifndef MAX_RW_COUNT
+#define MAX_RW_COUNT (INT_MAX >> 18 << 18)
+#endif
+
+/* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
+ Return the number of bytes read, which might be less than NBYTE.
+ On error, set errno and return -1. */
+EMACS_INT
+emacs_read (int fildes, char *buf, EMACS_INT nbyte)
{
- register int rtnval;
+ register ssize_t rtnval;
+
+ /* There is no need to check against MAX_RW_COUNT, since no caller ever
+ passes a size that large to emacs_read. */
while ((rtnval = read (fildes, buf, nbyte)) == -1
&& (errno == EINTR))
return (rtnval);
}
-int
-emacs_write (fildes, buf, nbyte)
- int fildes;
- const char *buf;
- unsigned int nbyte;
+/* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
+ or if a partial write occurs. Return the number of bytes written, setting
+ errno if this is less than NBYTE. */
+EMACS_INT
+emacs_write (int fildes, const char *buf, EMACS_INT nbyte)
{
- register int rtnval, bytes_written;
+ ssize_t rtnval;
+ EMACS_INT bytes_written;
bytes_written = 0;
while (nbyte > 0)
{
- rtnval = write (fildes, buf, nbyte);
+ rtnval = write (fildes, buf, min (nbyte, MAX_RW_COUNT));
- if (rtnval == -1)
+ if (rtnval < 0)
{
if (errno == EINTR)
{
continue;
}
else
- return (bytes_written ? bytes_written : -1);
+ break;
}
buf += rtnval;
nbyte -= rtnval;
bytes_written += rtnval;
}
+
return (bytes_written);
}
+
+static struct allocator const emacs_norealloc_allocator =
+ { xmalloc, NULL, xfree, memory_full };
+
+/* Get the symbolic link value of FILENAME. Return a pointer to a
+ NUL-terminated string. If readlink fails, return NULL and set
+ errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
+ Otherwise, allocate memory and return a pointer to that memory. If
+ memory allocation fails, diagnose and fail without returning. If
+ successful, store the length of the symbolic link into *LINKLEN. */
+char *
+emacs_readlink (char const *filename, char initial_buf[READLINK_BUFSIZE])
+{
+ return careadlinkat (AT_FDCWD, filename, initial_buf, READLINK_BUFSIZE,
+ &emacs_norealloc_allocator, careadlinkatcwd);
+}
\f
#ifdef USG
/*
* under error conditions.
*/
+#ifndef HAVE_GETWD
+
#ifndef MAXPATHLEN
/* In 4.1, param.h fails to define this. */
#define MAXPATHLEN 1024
#endif
-#ifndef HAVE_GETWD
-
char *
-getwd (pathname)
- char *pathname;
+getwd (char *pathname)
{
char *npath, *spath;
- extern char *getcwd ();
+ extern char *getcwd (char *, size_t);
BLOCK_INPUT; /* getcwd uses malloc */
spath = npath = getcwd ((char *) 0, MAXPATHLEN);
#ifndef HAVE_RENAME
-rename (from, to)
- const char *from;
- const char *to;
+int
+rename (const char *from, const char *to)
{
if (access (from, 0) == 0)
{
/* HPUX curses library references perror, but as far as we know
it won't be called. Anyway this definition will do for now. */
-perror ()
+void
+perror (void)
{
}
#endif /* HPUX and not HAVE_PERROR */
-#ifndef HAVE_DUP2
-
-/*
- * Emulate BSD dup2. 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;
-
- emacs_close (newd);
-
-#ifdef F_DUPFD
- return fcntl (oldd, F_DUPFD, newd);
-#else
- fd = dup (old);
- if (fd == -1)
- return -1;
- if (fd == new)
- return new;
- ret = dup2 (old,new);
- emacs_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 */
int
-gettimeofday (tp, tzp)
- struct timeval *tp;
- struct timezone *tzp;
+gettimeofday (struct timeval *tp, struct timezone *tzp)
{
- extern long time ();
+ extern long time (long);
tp->tv_sec = time ((long *)0);
tp->tv_usec = 0;
}
#endif
-#endif
-#endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
+#endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
/*
* This function will go away as soon as all the stubs fixed. (fnf)
*/
void
-croak (badfunc)
- char *badfunc;
+croak (char *badfunc)
{
printf ("%s not yet implemented\r\n", badfunc);
reset_all_sys_modes ();
\f
/* Directory routines for systems that don't have them. */
-#ifdef SYSV_SYSTEM_DIR
+#ifdef HAVE_DIRENT_H
#include <dirent.h>
int rtnval;
rtnval = emacs_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
- anyway? */
-#if ! defined (SOLARIS2)
- xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */
-#endif
xfree ((char *) dirp);
return rtnval;
}
#endif /* not HAVE_CLOSEDIR */
-#endif /* SYSV_SYSTEM_DIR */
+#endif /* HAVE_DIRENT_H */
\f
int
-set_file_times (filename, atime, mtime)
- const char *filename;
- EMACS_TIME atime, mtime;
+set_file_times (const char *filename, EMACS_TIME atime, EMACS_TIME mtime)
{
#ifdef HAVE_UTIMES
struct timeval tv[2];
* Make a directory.
*/
int
-mkdir (dpath, dmode)
- char *dpath;
- int dmode;
+mkdir (char *dpath, int dmode)
{
int cpid, status, fd;
struct stat statbuf;
#ifndef HAVE_RMDIR
int
-rmdir (dpath)
- char *dpath;
+rmdir (char *dpath)
{
int cpid, status, fd;
struct stat statbuf;
#endif /* !HAVE_RMDIR */
\f
-#ifndef BSTRING
-
-#ifndef bzero
-
-void
-bzero (b, length)
- register char *b;
- register int length;
-{
- while (length-- > 0)
- *b++ = 0;
-}
-
-#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;
-{
- while (length-- > 0)
- *b2++ = *b1++;
-}
-#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;
-{
- while (length-- > 0)
- if (*b1++ != *b2++)
- return 1;
-
- return 0;
-}
-#endif /* no bcmp */
-#endif /* not BSTRING */
-\f
#ifndef HAVE_STRSIGNAL
char *
-strsignal (code)
- int code;
+strsignal (int code)
{
char *signame = 0;
}
#endif /* HAVE_STRSIGNAL */
\f
-#ifdef HAVE_TERMIOS
+#ifndef DOS_NT
/* For make-serial-process */
-int serial_open (char *port)
+int
+serial_open (char *port)
{
int fd = -1;
return fd;
}
-#endif /* TERMIOS */
-
-#ifdef HAVE_TERMIOS
#if !defined (HAVE_CFMAKERAW)
/* Workaround for targets which are missing cfmakeraw. */
/* Pasted from man page. */
-static void cfmakeraw (struct termios *termios_p)
+static void
+cfmakeraw (struct termios *termios_p)
{
termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
termios_p->c_oflag &= ~OPOST;
#if !defined (HAVE_CFSETSPEED)
/* Workaround for targets which are missing cfsetspeed. */
-static int cfsetspeed (struct termios *termios_p, speed_t vitesse)
+static int
+cfsetspeed (struct termios *termios_p, speed_t vitesse)
{
return (cfsetispeed (termios_p, vitesse)
+ cfsetospeed (termios_p, vitesse));
/* For serial-process-configure */
void
serial_configure (struct Lisp_Process *p,
- Lisp_Object contact)
+ Lisp_Object contact)
{
Lisp_Object childp2 = Qnil;
Lisp_Object tem = Qnil;
CHECK_NUMBER (tem);
err = cfsetspeed (&attr, XINT (tem));
if (err != 0)
- error ("cfsetspeed(%d) failed: %s", XINT (tem), emacs_strerror (errno));
+ error ("cfsetspeed(%"pI"d) failed: %s", XINT (tem),
+ emacs_strerror (errno));
childp2 = Fplist_put (childp2, QCspeed, tem);
/* Configure bytesize. */
CHECK_NUMBER (tem);
if (XINT (tem) != 7 && XINT (tem) != 8)
error (":bytesize must be nil (8), 7, or 8");
- summary[0] = XINT(tem) + '0';
+ summary[0] = XINT (tem) + '0';
#if defined (CSIZE) && defined (CS7) && defined (CS8)
attr.c_cflag &= ~CSIZE;
attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8);
p->childp = childp2;
}
-#endif /* TERMIOS */
+#endif /* not DOS_NT */
\f
/* System depended enumeration of and access to system processes a-la ps(1). */
/* Process enumeration and access via /proc. */
Lisp_Object
-list_system_processes ()
+list_system_processes (void)
{
Lisp_Object procdir, match, proclist, next;
struct gcpro gcpro1, gcpro2;
#elif !defined (WINDOWSNT) && !defined (MSDOS)
Lisp_Object
-list_system_processes ()
+list_system_processes (void)
{
return Qnil;
}
size_t cmdsize = 0, cmdline_size;
unsigned char c;
int proc_id, ppid, uid, gid, pgrp, sess, tty, tpgid, thcount;
- unsigned long long utime, stime, cutime, cstime, start;
- long priority, nice, rss;
+ unsigned long long u_time, s_time, cutime, cstime, start;
+ long priority, niceness, rss;
unsigned long minflt, majflt, cminflt, cmajflt, vsize;
time_t sec;
unsigned usec;
- EMACS_TIME tnow, tstart, tboot, telapsed,ttotal;
+ EMACS_TIME tnow, tstart, tboot, telapsed;
double pcpu, pmem;
Lisp_Object attrs = Qnil;
Lisp_Object cmd_str, decoded_cmd, tem;
procfn_end = fn + strlen (fn);
strcpy (procfn_end, "/stat");
fd = emacs_open (fn, O_RDONLY, 0);
- if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof(procbuf) - 1)) > 0)
+ if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof (procbuf) - 1)) > 0)
{
procbuf[nread] = '\0';
p = procbuf;
sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
&c, &ppid, &pgrp, &sess, &tty, &tpgid,
&minflt, &cminflt, &majflt, &cmajflt,
- &utime, &stime, &cutime, &cstime,
- &priority, &nice, &thcount, &start, &vsize, &rss);
+ &u_time, &s_time, &cutime, &cstime,
+ &priority, &niceness, &thcount, &start, &vsize, &rss);
{
char state_str[2];
if (clocks_per_sec < 0)
clocks_per_sec = 100;
attrs = Fcons (Fcons (Qutime,
- ltime_from_jiffies (utime, clocks_per_sec)),
+ ltime_from_jiffies (u_time, clocks_per_sec)),
attrs);
attrs = Fcons (Fcons (Qstime,
- ltime_from_jiffies (stime, clocks_per_sec)),
+ ltime_from_jiffies (s_time, clocks_per_sec)),
attrs);
attrs = Fcons (Fcons (Qtime,
- ltime_from_jiffies (stime+utime, clocks_per_sec)),
+ ltime_from_jiffies (s_time + u_time,
+ clocks_per_sec)),
attrs);
attrs = Fcons (Fcons (Qcutime,
ltime_from_jiffies (cutime, clocks_per_sec)),
ltime_from_jiffies (cstime+cutime, clocks_per_sec)),
attrs);
attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs);
- attrs = Fcons (Fcons (Qnice, make_number (nice)), attrs);
+ attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs);
attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs);
EMACS_GET_TIME (tnow);
get_up_time (&sec, &usec);
make_number
(EMACS_USECS (telapsed)))),
attrs);
- time_from_jiffies (utime + stime, clocks_per_sec, &sec, &usec);
+ time_from_jiffies (u_time + s_time, clocks_per_sec, &sec, &usec);
pcpu = (sec + usec / 1000000.0) / (EMACS_SECS (telapsed) + EMACS_USECS (telapsed) / 1000000.0);
if (pcpu > 1.0)
pcpu = 1.0;
fd = emacs_open (fn, O_RDONLY, 0);
if (fd >= 0)
{
- for (cmdline_size = 0; emacs_read (fd, &c, 1) == 1; cmdline_size++)
+ char ch;
+ for (cmdline_size = 0; emacs_read (fd, &ch, 1) == 1; cmdline_size++)
{
+ c = ch;
if (isspace (c) || c == '\\')
cmdline_size++; /* for later quoting, see below */
}
#if PROCFS_FILE_OFFSET_BITS_HACK == 1
#define _FILE_OFFSET_BITS 64
+#ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
+#endif
#endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
Lisp_Object
strcpy (procfn_end, "/psinfo");
fd = emacs_open (fn, O_RDONLY, 0);
if (fd >= 0
- && (nread = read (fd, (char*)&pinfo, sizeof(struct psinfo)) > 0))
+ && (nread = read (fd, (char*)&pinfo, sizeof (struct psinfo)) > 0))
{
attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs);
attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs);
}
#endif /* !defined (WINDOWSNT) */
-
-
-/* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
- (do not change this comment) */
HCoop / bpt / emacs.git / blobdiff