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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SIGNAL_H_
#define _SIGNAL_H_
#include <errno.h>
#include <sys/cdefs.h>
#include <limits.h> /* For LONG_BIT */
#include <string.h> /* For memset() */
#include <sys/types.h>
#if defined(__LP64__)
/* For 64-bit, the kernel's struct sigaction doesn't match the POSIX one,
* so we need to expose our own and translate behind the scenes. */
# define sigaction __kernel_sigaction
# include <linux/signal.h>
# undef sigaction
#else
/* For 32-bit, we're stuck with the definitions we already shipped,
* even though they contain a sigset_t that's too small. */
# define __ARCH_SI_UID_T __kernel_uid32_t /* TODO: remove this when we switch to uapi. */
# include <linux/signal.h>
# undef __ARCH_SI_UID_T
#endif
__BEGIN_DECLS
typedef int sig_atomic_t;
/* _NSIG is used by the SIGRTMAX definition under <asm/signal.h>, however
* its definition is part of a #if __KERNEL__ .. #endif block in the original
* kernel headers and is thus not part of our cleaned-up versions.
*
* Looking at the current kernel sources, it is defined as 64 for all
* architectures except for the 'mips' one which set it to 128.
*/
#ifndef _NSIG
# define _NSIG 64
#endif
extern const char* const sys_siglist[];
extern const char* const sys_signame[];
typedef __sighandler_t sig_t; /* BSD compatibility. */
typedef __sighandler_t sighandler_t; /* glibc compatibility. */
#if __LP64__
struct sigaction {
unsigned int sa_flags;
union {
sighandler_t sa_handler;
void (*sa_sigaction)(int, struct siginfo*, void*);
};
sigset_t sa_mask;
void (*sa_restorer)(void);
};
#endif
extern int sigaction(int, const struct sigaction*, struct sigaction*);
extern sighandler_t signal(int, sighandler_t);
extern sighandler_t bsd_signal(int, sighandler_t);
extern sighandler_t sysv_signal(int, sighandler_t);
extern int siginterrupt(int, int);
extern int sigaddset(sigset_t*, int);
extern int sigdelset(sigset_t*, int);
extern int sigemptyset(sigset_t*);
extern int sigfillset(sigset_t*);
extern int sigismember(const sigset_t*, int);
extern int sigpending(sigset_t*) __nonnull((1));
extern int sigprocmask(int, const sigset_t*, sigset_t*);
extern int sigsuspend(const sigset_t*) __nonnull((1));
extern int sigwait(const sigset_t*, int*) __nonnull((1, 2));
extern int raise(int);
extern int kill(pid_t, int);
extern int killpg(int, int);
extern int sigaltstack(const stack_t*, stack_t*);
extern void psiginfo(const siginfo_t*, const char*);
extern void psignal(int, const char*);
__END_DECLS
#endif /* _SIGNAL_H_ */
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