117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*
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* signal.h - signal handling
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*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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#ifndef _SIGNAL_HEADER_
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#define _SIGNAL_HEADER_
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typedef int sig_atomic_t;
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#define SIG_ERR (void (*)())-1
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#if defined(em22) || defined(em24) || defined(em44)
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#define SIG_DFL ((void (*)())-2)
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#define SIG_IGN ((void (*)())-3)
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#else
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#define SIG_DFL ((void (*)())0)
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#define SIG_IGN ((void (*)())1)
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#endif /* SIG_ERR */
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#define SIGHUP 1 /* hangup */
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#define SIGINT 2 /* interrupt */
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#define SIGQUIT 3 /* quit */
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#define SIGILL 4 /* illegal instruction (not reset when caught) */
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#define SIGTRAP 5 /* trace trap (not reset when caught) */
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#define SIGIOT 6 /* IOT instruction */
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#define SIGABRT 6 /* ANSI abort trap */
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#define SIGEMT 7 /* EMT instruction */
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#define SIGFPE 8 /* floating point exception */
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#define SIGKILL 9 /* kill (cannot be caught or ignored) */
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#define SIGBUS 10 /* bus error */
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#define SIGSEGV 11 /* segmentation violation */
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#define SIGSYS 12 /* bad argument to system call */
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#define SIGPIPE 13 /* write on a pipe with no one to read it */
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#define SIGALRM 14 /* alarm clock */
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#define SIGTERM 15 /* software termination signal from kill */
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#ifdef __USG
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#define SIGUSR1 16 /* user defined signal 1 */
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#define SIGUSR2 17 /* user defined signal 2 */
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#define SIGCLD 18 /* death of a child */
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#define SIGPWR 19 /* power-fail signal */
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#define _NSIG 20
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#elif defined(__BSD4_2)
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#define SIGURG 16 /* urgent condition */
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#define SIGSTOP 17 /* stop signal not from tty */
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#define SIGTSTP 18 /* stop signal from tty */
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#define SIGCONT 19 /* continue a stopped process */
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#define SIGCHLD 20 /* death of a child */
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#define SIGCLD 20 /* System V compat. */
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#define SIGTTIN 21 /* background tty read */
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#define SIGTTOU 22 /* background tty write */
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#define SIGIO 23 /* I/O possible signal */
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#define SIGPOLL SIGIO /* System V compat. */
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#define SIGXCPU 24 /* exceeded CPU time limit */
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#define SIGXFSZ 25 /* exceeded file size limit */
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#define SIGVTALRM 26 /* virtual time alarm */
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#define SIGPROF 27 /* profiling time alarm */
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#define SIGWINCH 28 /* window has changed */
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#define SIGLOST 29 /* resource lost */
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#define SIGUSR1 30 /* user defined signal 1 */
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#define SIGUSR2 31 /* user defined signal 2 */
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#define _NSIG 32
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#else
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#define _NSIG 16
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#endif /* __USG or __BSD4_2 */
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#ifdef __BSD4_2
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struct sigvec {
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int (*sv_handler)(); /* handler */
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int sv_mask; /* mask to apply */
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int sv_flags;
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};
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#define SV_ONSTACK 0x0001 /* take signal on signal stack */
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#define SV_INTERRUPT 0x0002 /* do not restart system on signal return */
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#define SV_RESETHAND 0x0004 /* reset signal handler to SIG_DFL when signal taken */
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#define sv_onstack sv_flags /* compat. */
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struct sigstack {
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char *ss_sp; /* signal stack pointer */
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int ss_onstack; /* current status */
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};
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struct sigcontext {
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int sc_onstack; /* sigstack state to restore */
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int sc_mask; /* signal mask to restore */
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int sc_sp; /* sp to restore */
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#ifdef vax
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int sc_fp; /* fp to restore */
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int sc_ap; /* ap to restore */
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#endif /* vax */
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int sc_pc; /* pc to retore */
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int sc_ps; /* psl to restore */
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};
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#define BADSIG SIG_ERR /* compat. */
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#define sigmask(m) (1 << ((m)-1))
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/*
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* These are only defined for shutting up the compiler.
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*/
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#ifdef __STDC__
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int sigvec(int sig, struct sigvec *vec, struct sigvec *ovec);
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int sigstack(struct sigstack *ss, struct sigstack *oss);
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int sigblock(int mask);
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int sigsetmask(int mask);
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int sigpause(int sigmask);
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#endif /* __STDC__ */
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#endif /* __BSD4_2 */
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#ifdef __STDC__
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void (*signal(int sig, void (*func)(int)))(int);
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int raise(int sig);
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#endif /* __STDC__ */
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#endif /* _SIGNAL_HEADER_ */
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