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- #ifndef __SIGNAL_H
- #define __SIGNAL_H
- #pragma lib "/$M/lib/ape/libap.a"
- typedef int sig_atomic_t;
- /*
- * We don't give arg types for signal handlers, in spite of ANSI requirement
- * that it be 'int' (the signal number), because some programs need an
- * additional context argument. So the real type of signal handlers is
- * void handler(int sig, char *, struct Ureg *)
- * where the char * is the Plan 9 message and Ureg is defined in <ureg.h>
- */
- #define SIG_DFL ((void (*)())0)
- #define SIG_ERR ((void (*)())-1)
- #define SIG_IGN ((void (*)())1)
- #define SIGHUP 1 /* hangup */
- #define SIGINT 2 /* interrupt */
- #define SIGQUIT 3 /* quit */
- #define SIGILL 4 /* illegal instruction (not reset when caught)*/
- #define SIGABRT 5 /* used by abort */
- #define SIGFPE 6 /* floating point exception */
- #define SIGKILL 7 /* kill (cannot be caught or ignored) */
- #define SIGSEGV 8 /* segmentation violation */
- #define SIGPIPE 9 /* write on a pipe with no one to read it */
- #define SIGALRM 10 /* alarm clock */
- #define SIGTERM 11 /* software termination signal from kill */
- #define SIGUSR1 12 /* user defined signal 1 */
- #define SIGUSR2 13 /* user defined signal 2 */
- #define SIGBUS 14 /* bus error */
- /* The following symbols must be defined, but the signals needn't be supported */
- #define SIGCHLD 15 /* child process terminated or stopped */
- #define SIGCONT 16 /* continue if stopped */
- #define SIGSTOP 17 /* stop */
- #define SIGTSTP 18 /* interactive stop */
- #define SIGTTIN 19 /* read from ctl tty by member of background */
- #define SIGTTOU 20 /* write to ctl tty by member of background */
- #ifdef _BSD_EXTENSION
- #define NSIG 21
- #endif
- #ifdef __cplusplus
- extern "C" {
- #endif
- extern void (*signal(int, void (*)()))();
- extern int raise(int);
- #ifdef __cplusplus
- }
- #endif
- #ifdef _POSIX_SOURCE
- typedef long sigset_t;
- struct sigaction {
- void (*sa_handler)();
- sigset_t sa_mask;
- int sa_flags;
- };
- /* values for sa_flags */
- #define SA_NOCLDSTOP 1
- /* first argument to sigprocmask */
- #define SIG_BLOCK 1
- #define SIG_UNBLOCK 2
- #define SIG_SETMASK 3
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifdef __TYPES_H
- extern int kill(pid_t, int);
- #endif
- extern int sigemptyset(sigset_t *);
- extern int sigfillset(sigset_t *);
- extern int sigaddset(sigset_t *, int);
- extern int sigdelset(sigset_t *, int);
- extern int sigismember(const sigset_t *, int);
- extern int sigaction(int, const struct sigaction *, struct sigaction *);
- extern int sigprocmask(int, sigset_t *, sigset_t *);
- extern int sigpending(sigset_t *);
- extern int sigsuspend(const sigset_t *);
- #ifdef __cplusplus
- }
- #endif
- #endif /* _POSIX_SOURCE */
- #endif /* __SIGNAL_H */
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