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1998-10-25 Ulrich Drepper <drepper@cygnus.com> * include/features.h: Define __USE_POSIS199506 is _POSIX_C_SOURCE is greater or equal than 199506L. * sysdeps/generic/bits/types.h (__fd_set): Define element as fds_bits only is __USE_XOPEN. Otherwise use __fds_bits. * sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/bits/types.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * locale/programs/charmap.c (parse_charmap): Accept tok_string for <code_set_name>. 1998-10-25 H.J. Lu <hjl@gnu.org> * locale/programs/ld-ctype.c (ctype_finish): Also check <space>. 1998-10-25 Ulrich Drepper <drepper@cygnus.com> * signal/signal.h: Include bits/sigthread.h only if __USE_POSIX199506. * sysdeps/unix/sysv/linux/bits/types.h: Include pthreadtypes.h only if __USE_POSIX199506 or __USE_UNIX98. 1998-10-24 22:34 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * string/bits/string2.h: Inline strdup+friends only if __USE_MISC || __USE_GNU (prevents namespace pollution). 1998-10-24 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/alpha/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Protect with __USE_BSD. * sysdeps/unix/sysv/linux/i386/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/mips/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * libio/ioseekoff.c (_IO_seekoff): Check the valid dir value. * libio/rewind.c (rewind): Clear the error. 1998-10-24 H.J. Lu <hjl@gnu.org> * grp/grp.h (getgrent_r, getgrgid_r, getgrnam_r): Add "__" to "buffer". 1998-10-24 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/alpha/bits/time.h (timeval): Protect with __need_timeval. * sysdeps/unix/sysv/linux/mips/bits/time.h (timeval): Likewise. * sysdeps/unix/sysv/linux/bits/time.h (timeval): Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * signal/signal.h (timespec, siginfo_t, sigwaitinfo, sigtimedwait, sigqueue): Protect with __USE_POSIX199309. 1998-10-24 H.J. Lu <hjl@gnu.org> * time/time.h (timespec): Protect with __USE_POSIX199309 instead of __USE_POSIX. 1998-10-24 H.J. Lu <hjl@gnu.org> * libio/fileops.c (_IO_new_file_seekoff): Always resync with the kernel file offset. * libio/oldfileops.c (_IO_old_file_seekoff): Likewise.
362 lines
12 KiB
C
362 lines
12 KiB
C
/* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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* ISO C Standard: 4.7 SIGNAL HANDLING <signal.h>
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*/
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#ifndef _SIGNAL_H
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#if !defined __need_sig_atomic_t && !defined __need_sigset_t
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# define _SIGNAL_H
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#endif
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#include <features.h>
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__BEGIN_DECLS
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#include <bits/sigset.h> /* __sigset_t, __sig_atomic_t. */
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/* An integral type that can be modified atomically, without the
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possibility of a signal arriving in the middle of the operation. */
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#ifndef __sig_atomic_t_defined
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# if defined __need_sig_atomic_t || defined _SIGNAL_H
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# undef __need_sig_atomic_t
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# define __sig_atomic_t_defined 1
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typedef __sig_atomic_t sig_atomic_t;
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# endif
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#endif
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#ifndef __sigset_t_defined
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# if defined __need_sigset_t || (defined _SIGNAL_H && defined __USE_POSIX)
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# undef __need_sigset_t
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# define __sigset_t_defined 1
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typedef __sigset_t sigset_t;
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# endif
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#endif
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#ifdef _SIGNAL_H
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#include <bits/types.h>
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#include <bits/signum.h>
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#if defined __USE_XOPEN && !defined pid_t
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typedef __pid_t pid_t;
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# define pid_t pid_t
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#endif /* Unix98 */
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/* Type of a signal handler. */
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typedef void (*__sighandler_t) __PMT ((int));
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/* The X/Open definition of `signal' specifies the SVID semantic. Use
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the additional function `sysv_signal' when X/Open compatibility is
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requested. */
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extern __sighandler_t __sysv_signal __P ((int __sig,
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__sighandler_t __handler));
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#ifdef __USE_GNU
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extern __sighandler_t sysv_signal __P ((int __sig, __sighandler_t __handler));
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#endif
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/* Set the handler for the signal SIG to HANDLER, returning the old
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handler, or SIG_ERR on error.
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By default `signal' has the BSD semantic. */
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#ifdef __USE_BSD
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extern __sighandler_t signal __P ((int __sig, __sighandler_t __handler));
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#else
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/* Make sure the used `signal' implementation is the SVID version. */
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# ifdef __REDIRECT
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extern __sighandler_t __REDIRECT (signal,
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__P ((int __sig, __sighandler_t __handler)),
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__sysv_signal);
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# else
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# define signal __sysv_signal
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# endif
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#endif
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#ifdef __USE_XOPEN
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/* The X/Open definition of `signal' conflicts with the BSD version.
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So they defined another function `bsd_signal'. */
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extern __sighandler_t bsd_signal __P ((int __sig, __sighandler_t __handler));
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#endif
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/* Send signal SIG to process number PID. If PID is zero,
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send SIG to all processes in the current process's process group.
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If PID is < -1, send SIG to all processes in process group - PID. */
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#ifdef __USE_POSIX
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extern int kill __P ((__pid_t __pid, int __sig));
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#endif /* Use POSIX. */
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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/* Send SIG to all processes in process group PGRP.
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If PGRP is zero, send SIG to all processes in
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the current process's process group. */
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extern int killpg __P ((__pid_t __pgrp, int __sig));
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#endif /* Use BSD || X/Open Unix. */
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/* Raise signal SIG, i.e., send SIG to yourself. */
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extern int raise __P ((int __sig));
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#ifdef __USE_SVID
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/* SVID names for the same things. */
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extern __sighandler_t ssignal __P ((int __sig, __sighandler_t __handler));
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extern int gsignal __P ((int __sig));
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#endif /* Use SVID. */
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#ifdef __USE_MISC
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/* Print a message describing the meaning of the given signal number. */
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extern void psignal __P ((int __sig, __const char *__s));
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#endif /* Use misc. */
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/* The `sigpause' function has two different interfaces. The original
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BSD definition defines the argument as a mask of the signal, while
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the more modern interface in X/Open defines it as the signal
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number. We go with the BSD version unless the user explicitly
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selects the X/Open version. */
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extern int __sigpause __P ((int __sig_or_mask, int __is_sig));
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#ifdef __USE_BSD
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/* Set the mask of blocked signals to MASK,
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wait for a signal to arrive, and then restore the mask. */
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extern int sigpause __P ((int __mask));
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# define sigpause(mask) __sigpause ((mask), 0)
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#else
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# ifdef __USE_XOPEN
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/* Remove a signal from the signal mask and suspend the process. */
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# define sigpause(sig) __sigpause ((sig), 1)
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# endif
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#endif
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#ifdef __USE_BSD
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/* None of the following functions should be used anymore. They are here
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only for compatibility. A single word (`int') is not guaranteed to be
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enough to hold a complete signal mask and therefore these functions
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simply do not work in many situations. Use `sigprocmask' instead. */
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/* Compute mask for signal SIG. */
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# define sigmask(sig) __sigmask(sig)
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/* Block signals in MASK, returning the old mask. */
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extern int sigblock __P ((int __mask));
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/* Set the mask of blocked signals to MASK, returning the old mask. */
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extern int sigsetmask __P ((int __mask));
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/* Return currently selected signal mask. */
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extern int siggetmask __P ((void));
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#endif /* Use BSD. */
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#ifdef __USE_MISC
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# define NSIG _NSIG
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#endif
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#ifdef __USE_GNU
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typedef __sighandler_t sighandler_t;
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#endif
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/* 4.4 BSD uses the name `sig_t' for this. */
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#ifdef __USE_BSD
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typedef __sighandler_t sig_t;
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#endif
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#ifdef __USE_POSIX
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# ifdef __USE_POSIX199309
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/* We need `struct timespec' later on. */
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# define __need_timespec
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# include <time.h>
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/* Get the `siginfo_t' type plus the needed symbols. */
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# include <bits/siginfo.h>
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# endif
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/* Clear all signals from SET. */
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extern int sigemptyset __P ((sigset_t *__set));
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/* Set all signals in SET. */
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extern int sigfillset __P ((sigset_t *__set));
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/* Add SIGNO to SET. */
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extern int sigaddset __P ((sigset_t *__set, int __signo));
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/* Remove SIGNO from SET. */
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extern int sigdelset __P ((sigset_t *__set, int __signo));
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/* Return 1 if SIGNO is in SET, 0 if not. */
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extern int sigismember __P ((__const sigset_t *__set, int __signo));
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# ifdef __USE_GNU
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/* Return non-empty value is SET is not empty. */
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extern int sigisemptyset __P ((__const sigset_t *__set));
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/* Build new signal set by combining the two inputs set using logical AND. */
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extern int sigandset __P ((sigset_t *__set, __const sigset_t *__left,
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__const sigset_t *__right));
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/* Build new signal set by combining the two inputs set using logical OR. */
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extern int sigorset __P ((sigset_t *__set, __const sigset_t *__left,
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__const sigset_t *__right));
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# endif /* GNU */
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/* Get the system-specific definitions of `struct sigaction'
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and the `SA_*' and `SIG_*'. constants. */
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# include <bits/sigaction.h>
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/* Get and/or change the set of blocked signals. */
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extern int sigprocmask __P ((int __how,
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__const sigset_t *__set, sigset_t *__oset));
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/* Change the set of blocked signals to SET,
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wait until a signal arrives, and restore the set of blocked signals. */
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extern int sigsuspend __P ((__const sigset_t *__set));
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/* Get and/or set the action for signal SIG. */
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extern int __sigaction __P ((int __sig, __const struct sigaction *__act,
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struct sigaction *__oact));
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extern int sigaction __P ((int __sig, __const struct sigaction *__act,
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struct sigaction *__oact));
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/* Put in SET all signals that are blocked and waiting to be delivered. */
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extern int sigpending __P ((sigset_t *__set));
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/* Select any of pending signals from SET or wait for any to arrive. */
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extern int sigwait __P ((__const sigset_t *__set, int *__sig));
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# ifdef __USE_POSIX199309
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/* Select any of pending signals from SET and place information in INFO. */
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extern int sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
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/* Select any of pending signals from SET and place information in INFO.
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Wait the imte specified by TIMEOUT if no signal is pending. */
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extern int sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
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__const struct timespec *__timeout));
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/* Send signal SIG to the process PID. Associate data in VAL with the
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signal. */
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extern int sigqueue __P ((__pid_t __pid, int __sig,
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__const union sigval __val));
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# endif /* Use POSIX 199306. */
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#endif /* Use POSIX. */
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#ifdef __USE_BSD
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/* Names of the signals. This variable exists only for compatibility.
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Use `strsignal' instead (see <string.h>). */
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extern __const char *__const _sys_siglist[_NSIG];
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extern __const char *__const sys_siglist[_NSIG];
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/* Structure passed to `sigvec'. */
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struct sigvec
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{
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__sighandler_t sv_handler; /* Signal handler. */
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int sv_mask; /* Mask of signals to be blocked. */
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int sv_flags; /* Flags (see below). */
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# define sv_onstack sv_flags /* 4.2 BSD compatibility. */
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};
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/* Bits in `sv_flags'. */
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# define SV_ONSTACK (1 << 0)/* Take the signal on the signal stack. */
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# define SV_INTERRUPT (1 << 1)/* Do not restart system calls. */
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# define SV_RESETHAND (1 << 2)/* Reset handler to SIG_DFL on receipt. */
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/* If VEC is non-NULL, set the handler for SIG to the `sv_handler' member
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of VEC. The signals in `sv_mask' will be blocked while the handler runs.
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If the SV_RESETHAND bit is set in `sv_flags', the handler for SIG will be
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reset to SIG_DFL before `sv_handler' is entered. If OVEC is non-NULL,
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it is filled in with the old information for SIG. */
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extern int sigvec __P ((int __sig, __const struct sigvec *__vec,
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struct sigvec *__ovec));
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/* Get machine-dependent `struct sigcontext' and signal subcodes. */
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# include <bits/sigcontext.h>
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/* Restore the state saved in SCP. */
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extern int sigreturn __P ((struct sigcontext *__scp));
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#endif /* use BSD. */
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
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(causing them to fail with EINTR); if INTERRUPT is zero, make system
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calls be restarted after signal SIG. */
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extern int siginterrupt __P ((int __sig, int __interrupt));
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# include <bits/sigstack.h>
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/* Run signals handlers on the stack specified by SS (if not NULL).
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If OSS is not NULL, it is filled in with the old signal stack status.
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This interface is obsolete and on many platform not implemented. */
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extern int sigstack __P ((__const struct sigstack *__ss,
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struct sigstack *__oss));
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/* Alternate signal handler stack interface.
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This interface should always be preferred over `sigstack'. */
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extern int sigaltstack __P ((__const struct sigaltstack *__ss,
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struct sigaltstack *__oss));
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#endif /* use BSD or X/Open Unix. */
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#ifdef __USE_UNIX98
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/* Simplified interface for signal management. */
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/* Add SIG to the calling process' signal mask. */
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extern int sighold __P ((int __sig));
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/* Remove SIG from the calling process' signal mask. */
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extern int sigrelse __P ((int __sig));
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/* Set the disposition of SIG to SIG_IGN. */
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extern int sigignore __P ((int __sig));
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/* Set the disposition of SIG. */
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extern __sighandler_t sigset __P ((int __sig, __sighandler_t __disp));
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#endif /* use Unix98 */
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#ifdef __USE_POSIX199506
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/* Some of the functions for handling signals in threaded programs must
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be defined here. */
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# include <bits/sigthread.h>
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#endif
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/* The following functions are used internally in the C library and in
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other code which need deep insights. */
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/* Return number of available real-time signal with highest priority. */
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extern int __libc_current_sigrtmin __P ((void));
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/* Return number of available real-time signal with lowest priority. */
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extern int __libc_current_sigrtmax __P ((void));
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/* Allocate real-time signal with highest/lowest available priority. */
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extern int __libc_allocate_rtsig __P ((int __high));
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#endif /* signal.h */
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__END_DECLS
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#endif /* not signal.h */
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