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