1d82b7898f
Most architectures with the exception of alpha, mips, parisc and sparc use the same values for these flags. Move their definitions into asm-generic/signal-defs.h and allow the architectures with non-standard values to override them. Also, document the non-standard flag values in order to make it easier to add new generic flags in the future. A consequence of this change is that on powerpc and x86, the constants' values aside from SA_RESETHAND change signedness from unsigned to signed. This is not expected to impact realistic use of these constants. In particular the typical use of the constants where they are or'ed together and assigned to sa_flags (or another int variable) would not be affected. Signed-off-by: Peter Collingbourne <pcc@google.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://linux-review.googlesource.com/id/Ia3849f18b8009bf41faca374e701cdca36974528 Link: https://lkml.kernel.org/r/b6d0d1ec34f9ee93e1105f14f288fba5f89d1f24.1605235762.git.pcc@google.com Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
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* Copyright (C) 1999 Silicon Graphics, Inc.
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*/
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#ifndef _UAPI_ASM_SIGNAL_H
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#define _UAPI_ASM_SIGNAL_H
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#include <linux/types.h>
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#define _NSIG 128
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#define _NSIG_BPW (sizeof(unsigned long) * 8)
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#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
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typedef struct {
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unsigned long sig[_NSIG_WORDS];
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} sigset_t;
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typedef unsigned long old_sigset_t; /* at least 32 bits */
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#define SIGHUP 1 /* Hangup (POSIX). */
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#define SIGINT 2 /* Interrupt (ANSI). */
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#define SIGQUIT 3 /* Quit (POSIX). */
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#define SIGILL 4 /* Illegal instruction (ANSI). */
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#define SIGTRAP 5 /* Trace trap (POSIX). */
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#define SIGIOT 6 /* IOT trap (4.2 BSD). */
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#define SIGABRT SIGIOT /* Abort (ANSI). */
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#define SIGEMT 7
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#define SIGFPE 8 /* Floating-point exception (ANSI). */
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#define SIGKILL 9 /* Kill, unblockable (POSIX). */
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#define SIGBUS 10 /* BUS error (4.2 BSD). */
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#define SIGSEGV 11 /* Segmentation violation (ANSI). */
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#define SIGSYS 12
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#define SIGPIPE 13 /* Broken pipe (POSIX). */
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#define SIGALRM 14 /* Alarm clock (POSIX). */
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#define SIGTERM 15 /* Termination (ANSI). */
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#define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
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#define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
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#define SIGCHLD 18 /* Child status has changed (POSIX). */
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#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
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#define SIGPWR 19 /* Power failure restart (System V). */
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#define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
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#define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
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#define SIGIO 22 /* I/O now possible (4.2 BSD). */
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#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
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#define SIGSTOP 23 /* Stop, unblockable (POSIX). */
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#define SIGTSTP 24 /* Keyboard stop (POSIX). */
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#define SIGCONT 25 /* Continue (POSIX). */
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#define SIGTTIN 26 /* Background read from tty (POSIX). */
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#define SIGTTOU 27 /* Background write to tty (POSIX). */
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#define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
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#define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
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#define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
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#define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
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/* These should not be considered constants from userland. */
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#define SIGRTMIN 32
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#define SIGRTMAX _NSIG
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/*
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* SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
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* supported its use and no libc was using it, so the entire sa-restorer
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* functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
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* retaining only the SA_RESTORER definition as a reminder to avoid
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* accidental reuse of the mask bit.
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*/
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#define SA_ONSTACK 0x08000000
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#define SA_RESETHAND 0x80000000
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#define SA_RESTART 0x10000000
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#define SA_SIGINFO 0x00000008
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#define SA_NODEFER 0x40000000
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#define SA_NOCLDWAIT 0x00010000
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#define SA_NOCLDSTOP 0x00000001
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#define SA_NOMASK SA_NODEFER
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#define SA_ONESHOT SA_RESETHAND
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#define MINSIGSTKSZ 2048
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#define SIGSTKSZ 8192
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#define SIG_BLOCK 1 /* for blocking signals */
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#define SIG_UNBLOCK 2 /* for unblocking signals */
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#define SIG_SETMASK 3 /* for setting the signal mask */
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#include <asm-generic/signal-defs.h>
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#ifndef __KERNEL__
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struct sigaction {
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unsigned int sa_flags;
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__sighandler_t sa_handler;
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sigset_t sa_mask;
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};
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#endif
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/* IRIX compatible stack_t */
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typedef struct sigaltstack {
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void __user *ss_sp;
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size_t ss_size;
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int ss_flags;
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} stack_t;
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#endif /* _UAPI_ASM_SIGNAL_H */
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