mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 10:30:20 +00:00
f540c0a4ad
1998-11-02 16:12 -0500 Zack Weinberg <zack@rabi.phys.columbia.edu> * sysdeps/generic/bits/signum.h: Define signals with their historical numbers when those are in the 1-15 range and consistent across platforms. Define compatibility aliases (SIGIOT, SIGCLD) if __USE_MISC. Define SIG_DFL, SIG_IGN, SIG_ERR as numeric constants cast appropriately instead of with fake function declarations (would cause link errors). If __USE_UNIX98, define SIG_HOLD. 1998-10-29 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/bits/sigaction.h (sigaction): Use union only if __USE_POSIX199309 is defined. * misc/sys/select.h (pselect): Declared only if __USE_GNU is defined. * sysdeps/unix/sysv/linux/netatalk/at.h: Include <linux/atalk.h> before <sys/socket.h> to make sockaddr_at available to <sys/socket.h>.
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/* The proper definitions for Linux's sigaction.
|
|
Copyright (C) 1993, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _SIGNAL_H
|
|
# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
|
|
#endif
|
|
|
|
/* Structure describing the action to be taken when a signal arrives. */
|
|
struct sigaction
|
|
{
|
|
/* Signal handler. */
|
|
#ifdef __USE_POSIX199309
|
|
union
|
|
{
|
|
/* Used if SA_SIGINFO is not set. */
|
|
__sighandler_t sa_handler;
|
|
/* Used if SA_SIGINFO is set. */
|
|
void (*sa_sigaction) __PMT ((int, siginfo_t *, void *));
|
|
}
|
|
__sigaction_handler;
|
|
# define sa_handler __sigaction_handler.sa_handler
|
|
# define sa_sigaction __sigaction_handler.sa_sigaction
|
|
#else
|
|
__sighandler_t sa_handler;
|
|
#endif
|
|
|
|
/* Additional set of signals to be blocked. */
|
|
__sigset_t sa_mask;
|
|
|
|
/* Special flags. */
|
|
int sa_flags;
|
|
|
|
/* Restore handler. */
|
|
void (*sa_restorer) __PMT ((void));
|
|
};
|
|
|
|
/* Bits in `sa_flags'. */
|
|
#define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */
|
|
#define SA_SIGINFO 4 /* Invoke signal-catching function with
|
|
three arguments instead of one. */
|
|
#if defined __USE_UNIX98 || defined __USE_MISC
|
|
# define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */
|
|
# define SA_RESTART 0x10000000 /* Restart syscall on signal return. */
|
|
# define SA_NODEFER 0x40000000 /* Don't automatically block the signal when
|
|
its handler is being executed. */
|
|
# define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */
|
|
#endif
|
|
#ifdef __USE_MISC
|
|
# define SA_INTERRUPT 0x20000000 /* Historical no-op. */
|
|
|
|
/* Some aliases for the SA_ constants. */
|
|
# define SA_NOMASK SA_NODEFER
|
|
# define SA_ONESHOT SA_RESETHAND
|
|
# define SA_STACK SA_ONSTACK
|
|
#endif
|
|
|
|
/* Values for the HOW argument to `sigprocmask'. */
|
|
#define SIG_BLOCK 0 /* Block signals. */
|
|
#define SIG_UNBLOCK 1 /* Unblock signals. */
|
|
#define SIG_SETMASK 2 /* Set the set of blocked signals. */
|