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signal.h

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
 * Copyright (C) 1999 Silicon Graphics, Inc.
 */
#ifndef _ASM_SIGNAL_H
#define _ASM_SIGNAL_H

#include <linux/types.h>

#define _NSIG           128
#define _NSIG_BPW (sizeof(unsigned long) * 8)
#define _NSIG_WORDS     (_NSIG / _NSIG_BPW)

00018 typedef struct {
      unsigned long sig[_NSIG_WORDS];
} sigset_t;

typedef unsigned long old_sigset_t;       /* at least 32 bits */

#define SIGHUP           1    /* Hangup (POSIX).  */
#define SIGINT           2    /* Interrupt (ANSI).  */
#define SIGQUIT          3    /* Quit (POSIX).  */
#define SIGILL           4    /* Illegal instruction (ANSI).  */
#define SIGTRAP          5    /* Trace trap (POSIX).  */
#define SIGIOT           6    /* IOT trap (4.2 BSD).  */
#define SIGABRT          SIGIOT     /* Abort (ANSI).  */
#define SIGEMT           7
#define SIGFPE           8    /* Floating-point exception (ANSI).  */
#define SIGKILL          9    /* Kill, unblockable (POSIX).  */
#define SIGBUS          10    /* BUS error (4.2 BSD).  */
#define SIGSEGV         11    /* Segmentation violation (ANSI).  */
#define SIGSYS          12
#define SIGPIPE         13    /* Broken pipe (POSIX).  */
#define SIGALRM         14    /* Alarm clock (POSIX).  */
#define SIGTERM         15    /* Termination (ANSI).  */
#define SIGUSR1         16    /* User-defined signal 1 (POSIX).  */
#define SIGUSR2         17    /* User-defined signal 2 (POSIX).  */
#define SIGCHLD         18    /* Child status has changed (POSIX).  */
#define SIGCLD          SIGCHLD     /* Same as SIGCHLD (System V).  */
#define SIGPWR          19    /* Power failure restart (System V).  */
#define SIGWINCH  20    /* Window size change (4.3 BSD, Sun).  */
#define SIGURG          21    /* Urgent condition on socket (4.2 BSD).  */
#define SIGIO           22    /* I/O now possible (4.2 BSD).  */
#define SIGPOLL         SIGIO /* Pollable event occurred (System V).  */
#define SIGSTOP         23    /* Stop, unblockable (POSIX).  */
#define SIGTSTP         24    /* Keyboard stop (POSIX).  */
#define SIGCONT         25    /* Continue (POSIX).  */
#define SIGTTIN         26    /* Background read from tty (POSIX).  */
#define SIGTTOU         27    /* Background write to tty (POSIX).  */
#define SIGVTALRM 28    /* Virtual alarm clock (4.2 BSD).  */
#define SIGPROF         29    /* Profiling alarm clock (4.2 BSD).  */
#define SIGXCPU         30    /* CPU limit exceeded (4.2 BSD).  */
#define SIGXFSZ         31    /* File size limit exceeded (4.2 BSD).  */

/* These should not be considered constants from userland.  */
#define SIGRTMIN  32
#define SIGRTMAX  _NSIG

/*
 * SA_FLAGS values:
 *
 * SA_ONSTACK indicates that a registered stack_t will be used.
 * SA_RESTART flag to get restarting signals (which were the default long ago)
 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
 * SA_RESETHAND clears the handler when the signal is delivered.
 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
 * SA_NODEFER prevents the current signal from being masked in the handler.
 *
 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
 * Unix names RESETHAND and NODEFER respectively.
 */
#define SA_ONSTACK      0x08000000
#define SA_RESETHAND    0x80000000
#define SA_RESTART      0x10000000
#define SA_SIGINFO      0x00000008
#define SA_NODEFER      0x40000000
#define SA_NOCLDWAIT    0x00010000
#define SA_NOCLDSTOP    0x00000001

#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT      SA_RESETHAND

#define SA_RESTORER     0x04000000  /* Only for o32 */

/*
 * sigaltstack controls
 */
#define SS_ONSTACK     1
#define SS_DISABLE     2

#define MINSIGSTKSZ    2048
#define SIGSTKSZ       8192

#ifdef __KERNEL__

#ifdef CONFIG_TRAD_SIGNALS
#define sig_uses_siginfo(ka)  ((ka)->sa.sa_flags & SA_SIGINFO)
#else
#define sig_uses_siginfo(ka)  (1)
#endif

#endif /* __KERNEL__ */

#define SIG_BLOCK 1     /* for blocking signals */
#define SIG_UNBLOCK     2     /* for unblocking signals */
#define SIG_SETMASK     3     /* for setting the signal mask */

#include <asm-generic/signal.h>

struct sigaction {
      unsigned int      sa_flags;
      __sighandler_t    sa_handler;
      sigset_t    sa_mask;
};

00120 struct k_sigaction {
      struct sigaction sa;
};

/* IRIX compatible stack_t  */
typedef struct sigaltstack {
      void __user *ss_sp;
      size_t ss_size;
      int ss_flags;
} stack_t;

#ifdef __KERNEL__
#include <asm/sigcontext.h>
#include <asm/siginfo.h>

#define ptrace_signal_deliver(regs, cookie) do { } while (0)

#endif /* __KERNEL__ */

#endif /* _ASM_SIGNAL_H */

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