/* * 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) 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 */ #define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility: set only the low 32 bit of the sigset. */ /* Type of a signal handler. */ typedef void __signalfn_t(int); typedef __signalfn_t __user *__sighandler_t; /* Fake signal functions */ #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ struct sigaction { unsigned int sa_flags; __sighandler_t sa_handler; sigset_t sa_mask; }; struct k_sigaction { struct sigaction sa; #ifdef CONFIG_BINFMT_IRIX void (*sa_restorer)(void); #endif }; /* 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) struct pt_regs; extern void do_signal(struct pt_regs *regs); extern void do_signal32(struct pt_regs *regs); extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set); extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info); extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set); extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info); extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info); #endif /* __KERNEL__ */ #endif /* _ASM_SIGNAL_H */