glibc/sysdeps/unix/sysv/linux/sigaction.h
Roland McGrath c14e4c326d * hurd/hurdstartup.c (_hurd_startup): Use new
exec_startup_get_info RPC from exec_startup.defs
	in place of old exec_startup from exec.defs.  Remove kludge to
	guess user entry and phdr locations, since the new RPC gives us
	that info.

	* sysdeps/generic/_strerror.c: Undo last change.
1995-10-26 03:59:27 +00:00

55 lines
2.1 KiB
C

/* The proper definitions for Linux's sigaction.
Copyright (C) 1993, 1994, 1995 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. */
/* Structure describing the action to be taken when a signal arrives. */
struct sigaction
{
/* Signal handler. */
__sighandler_t sa_handler;
/* Additional set of signals to be blocked. */
__sigset_t sa_mask;
/* Special flags. */
unsigned long sa_flags;
/* Restore handler. */
void (*sa_restorer) __P ((void));
};
/* Bits in `sa_flags'. */
#define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */
#ifdef __USE_MISC
#define SA_STACK 0x08000000 /* Use signal stack by using `sa_restorer'. */
#define SA_RESTART 0x10000000 /* Don't restart syscall on signal return. */
#define SA_INTERRUPT 0x20000000 /* Historical no-op. */
#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. */
/* Some aliases for the SA_ constants. */
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#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. */