#ifndef _SIGNAL_H #define _SIGNAL_H /* * The header defines all the ANSI and POSIX signals. * * Some additional signals are also supported. * * AMENDMENT HISTORY * ~~~~~~~~~~~~~~~~~ * 24 Jan 94 DJW - Small changes made as required for the first real * implementation of signal support in C68. * * 24 Aug 95 DJW - Incorporated changes required to support Richard * Zlidlicky signal routines. * In particular you can now define _OLDSIGNALDEF if you * want the old definitions, but otherwise the new * (more Unix SVR4 like) definitions are used. * * 20 Sep 95 DJW - Moved routines that were previously in section that * was protected by __LIBRARY__ into the sys/signal.h * header file instead. */ #ifndef _SYS_TYPES_H #include #endif #ifndef NULL #define NULL ((void *)0) #endif #ifdef __STDC__ #define _P_(params) params #else #define _P_(params) #endif /* * Here are types that are closely associated with signal handling. */ typedef int sig_atomic_t; #ifndef _SIGSET_T #define _SIGSET_T typedef unsigned long sigset_t; #endif #ifdef _OLDSIGNALDEF /* * Old definitions used before full signal support was * provided by the C68 libraries. Retained (temporarily) * to help with any transition activities. */ #define SIGABRT 1 /* IOT instruction */ #define SIGALRM 2 /* alarm clock */ #define SIGFPE 3 /* floating point exception */ #define SIGHUP 4 /* hangup */ #define SIGILL 5 /* illegal instruction */ #define SIGINT 6 /* terminal interrupt (DEL) */ #define SIGKILL 7 /* kill (cannot be caught or ignored) */ #define SIGPIPE 8 /* write on a pipe with no one to read it */ #define SIGQUIT 9 /* quit (ASCII FS) */ #define SIGSEGV 10 /* segmentation violation */ #define SIGTERM 11 /* software termination signal from kill */ #define SIGUSR1 12 /* user defined signal # 1 */ #define SIGUSR2 13 /* user defined signal # 2 */ #define _NSIG 13 /* number of signals used */ #endif /* _OLDSIGNALDEF */ #ifndef _OLDSIGNALDEF #define SIGHUP 1 /* hangup */ #define SIGINT 2 /* terminal interrupt (DEL) */ #define SIGQUIT 3 /* quit (ASCII FS) */ #define SIGILL 4 /* illegal instruction */ #define SIGPIPE 5 /* write on a pipe with no one to read it */ #define SIGSEGV 6 /* segement violation / illegal address */ #define SIGBUS 7 /* misaligned */ #define SIGFPE 8 /* floating point exception */ #define SIGKILL 9 /* kill (cannot be caught or ignored) */ #define SIGALRM 10 /* alarm clock */ #define SIGABRT 11 /* IOT instruction */ #define SIGTRACE 12 #define SIGWINCHD 13 /* window definition changed */ #define SIGWMREQ 14 /* wman callback */ #define SIGTERM 15 /* software termination signal from kill */ #define SIGUSR1 16 /* user defined signal # 1 */ #define SIGUSR2 17 /* user defined signal # 2 */ #define _NSIG 17 /* number of signals used */ #endif /* ! _OLDSIGNALDEF */ #define NSIG _NSIG /* * POSIX requires the following signals to be defined, even if they are * not supported. Here are the definitions, but they are not supported. */ #define SIGCHLD 0 /* child process terminated or stopped */ #define SIGCONT 0 /* continue if stopped */ #define SIGSTOP 0 /* stop signal */ #define SIGTSTP 0 /* interactive stop signal */ #define SIGTTIN 0 /* background process wants to read */ #define SIGTTOU 0 /* background process wants to write */ /* * The following are signals that are not on the list defined by POSIX, * but that some systems may try and use. The constants are recognised, * but they are not supported, and will have no effect. */ #ifndef _POSIX_SOURCE #define SIGIOT 1 /* SIGABRT for people who speak PDP-11 */ #define SIGUNUSED 0 /* spare code */ #define SIGSTKFLT 0 /* used by kernel to indicate stack fault */ #define SIGTRAP SIGTRACE /* trace trap (not reset when caught) */ #define SIGEMT 0 /* obsolete */ #endif /* _POSIX_SOURCE */ #ifdef _POSIX_SOURCE #define SA_NOCLDSTOP 1 /* signal parent if child stops */ #endif /* _POSIX_SOURCE */ /* * POSIX requires these values for use on system calls involving signals. */ #define SIG_BLOCK 0 /* for blocking signals */ #define SIG_UNBLOCK 1 /* for unblocking signals */ #define SIG_SETMASK 2 /* for setting the signal mask */ /* * Macros used as function pointers */ #define SIG_IGN ((void (*)(int))0) /* ignore signal */ #define SIG_DFL ((void (*)(int))1) /* default signal handling */ #define SIG_HOLD ((void (*)(int))2) #define SIG_ERR ((void (*)(int))-1) struct sigaction { void (*sa_handler)_P_((int)); /* SIG_DFL, SIG_IGN, or pointer to function */ sigset_t sa_mask; /* signals to be blocked during handler */ int sa_flags; /* special flags */ }; /* sigaction sa_flags: */ #define SA_RESETHAND 0x1 /* reset to SIG_DFL while handling */ typedef char * caddr_t; typedef struct { int si_signo; /* signal number */ int si_errno; /* error number */ int si_code; /* signal code */ pid_t si_pid; /* sending process ID */ uid_t si_uid; /* sending user ID */ int si_status; long si_band; caddr_t si_addr; } siginfo_t; /* * Function Prototypes for POSIX defined routines */ int kill _P_((pid_t, int)); int raise _P_((int)); int sigaction _P_((int, struct sigaction *,struct sigaction *)); int sigaddset _P_((sigset_t *, int)); int sigdelset _P_((sigset_t *, int)); int sigemptyset _P_((sigset_t *)); int sigfillset _P_((sigset_t *)); int sigismember _P_((sigset_t *, int)); void (*signal _P_((int, void (*)_P_((int)))))_P_((int)); int sigpending _P_((sigset_t *)); int sigprocmask _P_((int, sigset_t *, sigset_t *)); int sigsuspend _P_((sigset_t *)); /* * Function prototypes for Unix SVR4 routines */ void psignal _P_((int, const char *)); void psiginfo _P_((siginfo_t *, const char *)); int sighold _P_((int)); int sigrelse _P_((int)); int sigignore _P_((int)); int sigpause _P_((int)); void (*sigset _P_((int , void (*)_P_((int)))))_P_((int)); /* * Function prototypes of other signal related routines */ int fraise _P_((int,int)); int raiseu _P_((int,int)); /* takes extra uval arg */ int sigcleanup _P_((void)); #undef _P_ #endif /* _SIGNAL_H */