diff options
Diffstat (limited to 'sys/sys/signal.h')
| -rw-r--r-- | sys/sys/signal.h | 225 |
1 files changed, 118 insertions, 107 deletions
diff --git a/sys/sys/signal.h b/sys/sys/signal.h index 4a0fee8..8d1e773 100644 --- a/sys/sys/signal.h +++ b/sys/sys/signal.h @@ -44,56 +44,65 @@ #include <sys/cdefs.h> #include <sys/_posix.h> +#include <sys/types.h> #include <machine/signal.h> /* sig_atomic_t; trap codes; sigcontext */ -#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) -#define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */ -#endif +/* + * sigset_t macros + */ +#define _SIG_WORDS 4 +#define _SIG_MAXSIG 128 +#define _SIG_IDX(sig) ((sig) - 1) +#define _SIG_WORD(sig) (_SIG_IDX(sig) >> 5) +#define _SIG_BIT(sig) (1 << (_SIG_IDX(sig) & 31)) -#define SIGHUP 1 /* hangup */ -#define SIGINT 2 /* interrupt */ -#define SIGQUIT 3 /* quit */ -#define SIGILL 4 /* illegal instruction (not reset when caught) */ +/* + * system defined signals + */ +#define SIGHUP 1 /* hangup */ +#define SIGINT 2 /* interrupt */ +#define SIGQUIT 3 /* quit */ +#define SIGILL 4 /* illegal instr. (not reset when caught) */ #ifndef _POSIX_SOURCE -#define SIGTRAP 5 /* trace trap (not reset when caught) */ +#define SIGTRAP 5 /* trace trap (not reset when caught) */ #endif -#define SIGABRT 6 /* abort() */ +#define SIGABRT 6 /* abort() */ #ifndef _POSIX_SOURCE -#define SIGIOT SIGABRT /* compatibility */ -#define SIGEMT 7 /* EMT instruction */ +#define SIGIOT SIGABRT /* compatibility */ +#define SIGEMT 7 /* EMT instruction */ #endif -#define SIGFPE 8 /* floating point exception */ -#define SIGKILL 9 /* kill (cannot be caught or ignored) */ +#define SIGFPE 8 /* floating point exception */ +#define SIGKILL 9 /* kill (cannot be caught or ignored) */ #ifndef _POSIX_SOURCE -#define SIGBUS 10 /* bus error */ +#define SIGBUS 10 /* bus error */ #endif -#define SIGSEGV 11 /* segmentation violation */ +#define SIGSEGV 11 /* segmentation violation */ #ifndef _POSIX_SOURCE -#define SIGSYS 12 /* non-existent system call invoked */ +#define SIGSYS 12 /* non-existent system call invoked */ #endif -#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 */ +#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 */ #ifndef _POSIX_SOURCE -#define SIGURG 16 /* urgent condition on IO channel */ +#define SIGURG 16 /* urgent condition on IO channel */ #endif -#define SIGSTOP 17 /* sendable stop signal not from tty */ -#define SIGTSTP 18 /* stop signal from tty */ -#define SIGCONT 19 /* continue a stopped process */ -#define SIGCHLD 20 /* to parent on child stop or exit */ -#define SIGTTIN 21 /* to readers pgrp upon background tty read */ -#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */ +#define SIGSTOP 17 /* sendable stop signal not from tty */ +#define SIGTSTP 18 /* stop signal from tty */ +#define SIGCONT 19 /* continue a stopped process */ +#define SIGCHLD 20 /* to parent on child stop or exit */ +#define SIGTTIN 21 /* to readers pgrp upon background tty read */ +#define SIGTTOU 22 /* like TTIN if (tp->t_local<OSTOP) */ #ifndef _POSIX_SOURCE -#define SIGIO 23 /* input/output possible signal */ -#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 size changes */ -#define SIGINFO 29 /* information request */ +#define SIGIO 23 /* input/output possible signal */ +#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 size changes */ +#define SIGINFO 29 /* information request */ #endif -#define SIGUSR1 30 /* user defined signal 1 */ -#define SIGUSR2 31 /* user defined signal 2 */ +#define SIGUSR1 30 /* user defined signal 1 */ +#define SIGUSR2 31 /* user defined signal 2 */ /*- * Type of a signal handling function. @@ -113,56 +122,41 @@ */ typedef void __sighandler_t __P((int)); -#if defined(_P1003_1B_VISIBLE_HISTORICALLY) || \ - (!defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)) +#define SIG_DFL ((__sighandler_t *)0) +#define SIG_IGN ((__sighandler_t *)1) +#define SIG_HOLD ((__sighandler_t *)2) +#define SIG_ERR ((__sighandler_t *)-1) + union sigval { /* Members as suggested by Annex C of POSIX 1003.1b. */ - int sigval_int; - void *sigval_ptr; + int sigval_int; + void *sigval_ptr; }; -#endif /* !_ANSI_SOURCE && _P1003_1B_VISIBLE_HISTORICALLY */ - -#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) -/* POSIX 1003.1b required values. */ -#define SI_USER 0x10001 -#define SI_QUEUE 0x10002 -#define SI_TIMER 0x10003 -#define SI_ASYNCIO 0x10004 -#define SI_MESGQ 0x10005 - -/* Additional FreeBSD values. */ -#define SI_UNDEFINED 0 - -struct __siginfo { - struct sigcontext si_sc; - int si_signo; /* signal number */ +typedef struct { + int si_signo; /* signal number */ + int si_errno; /* errno association */ /* * Cause of signal, one of the SI_ macros or signal-specific * values, i.e. one of the FPE_... values for SIGFPE. This * value is equivalent to the second argument to an old-style * FreeBSD signal handler. */ - int si_code; - - union sigval si_value; -}; -#else /* ! _ANSI_SOURCE && ! _POSIX_SOURCE */ -struct __siginfo; -#endif /* ! _ANSI_SOURCE && ! _POSIX_SOURCE */ - -typedef struct __siginfo siginfo_t; - -#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) -typedef void __siginfohandler_t __P((int, siginfo_t *, void *)); -#endif /* ! _ANSI_SOURCE && ! _POSIX_SOURCE */ - -#define SIG_DFL ((__sighandler_t *)0) -#define SIG_IGN ((__sighandler_t *)1) -#define SIG_ERR ((__sighandler_t *)-1) - -#ifndef _ANSI_SOURCE -typedef unsigned int sigset_t; + int si_code; /* signal code */ + pid_t si_pid; /* sending process */ + uid_t si_uid; /* sender's ruid */ + int si_status; /* exit value */ + void *si_addr; /* faulting instruction */ + union sigval si_value; /* signal value */ + long si_band; /* band event for SIGPOLL */ + int __spare__[7]; /* gimme some slack */ +} siginfo_t; + +typedef struct { + unsigned int __bits[_SIG_WORDS]; +} sigset_t; + +#if !defined(_ANSI_SOURCE) /* * Signal vector "template" used in sigaction call. @@ -172,16 +166,19 @@ struct sigaction { void (*__sa_handler) __P((int)); void (*__sa_sigaction) __P((int, siginfo_t *, void *)); } __sigaction_u; /* signal handler */ - sigset_t sa_mask; /* signal mask to apply */ - int sa_flags; /* see signal options below */ + int sa_flags; /* see signal options below */ + sigset_t sa_mask; /* signal mask to apply */ }; + /* if SA_SIGINFO is set, sa_sigaction is to be used instead of sa_handler. */ #define sa_handler __sigaction_u.__sa_handler -#ifndef _POSIX_SOURCE + +#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */ + +#if !defined(_POSIX_SOURCE) + #define sa_sigaction __sigaction_u.__sa_sigaction -#endif -#ifndef _POSIX_SOURCE #define SA_ONSTACK 0x0001 /* take signal on signal stack */ #define SA_RESTART 0x0002 /* restart system call on signal return */ #define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */ @@ -191,17 +188,21 @@ struct sigaction { #ifdef COMPAT_SUNOS #define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */ #endif -#endif /* _POSIX_SOURCE */ -#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */ -/* - * Flags for sigprocmask: - */ -#define SIG_BLOCK 1 /* block specified signal set */ -#define SIG_UNBLOCK 2 /* unblock specified signal set */ -#define SIG_SETMASK 3 /* set specified signal set */ +#define NSIG 32 + +/* POSIX 1003.1b required values. */ +#define SI_USER 0x10001 +#define SI_QUEUE 0x10002 +#define SI_TIMER 0x10003 +#define SI_ASYNCIO 0x10004 +#define SI_MESGQ 0x10005 + +/* Additional FreeBSD values. */ +#define SI_UNDEFINED 0 + +typedef void __siginfohandler_t __P((int, siginfo_t *, void *)); -#ifndef _POSIX_SOURCE typedef __sighandler_t *sig_t; /* type of pointer to a signal function */ #ifdef _BSD_SIZE_T_ @@ -210,26 +211,32 @@ typedef _BSD_SIZE_T_ size_t; #endif /* - * Structure used in sigaltstack call. + * sigaltstack */ -struct sigaltstack { - char *ss_sp; /* signal stack base */ - size_t ss_size; /* signal stack length */ - int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */ -}; +typedef struct sigaltstack { + char *ss_sp; /* signal stack base */ + unsigned int ss_size; /* signal stack length */ + int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */ +} stack_t; + #define SS_ONSTACK 0x0001 /* take signal on alternate stack */ #define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */ #define MINSIGSTKSZ 8192 /* minimum allowable stack */ #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */ /* + * Suck in definition of ucontext_t + */ +#include <sys/ucontext.h> + +/* * 4.3 compatibility: * Signal vector "template" used in sigvec call. */ struct sigvec { - __sighandler_t *sv_handler; /* signal handler */ - int sv_mask; /* signal mask to apply */ - int sv_flags; /* see signal options below */ + __sighandler_t *sv_handler; /* signal handler */ + int sv_mask; /* signal mask to apply */ + int sv_flags; /* see signal options below */ }; #define SV_ONSTACK SA_ONSTACK @@ -244,8 +251,8 @@ struct sigvec { * Structure used in sigstack call. */ struct sigstack { - char *ss_sp; /* signal stack pointer */ - int ss_onstack; /* current status */ + char *ss_sp; /* signal stack pointer */ + int ss_onstack; /* current status */ }; /* @@ -256,21 +263,25 @@ struct sigstack { #define BADSIG SIG_ERR -#endif /* !_POSIX_SOURCE */ -#endif /* !_ANSI_SOURCE */ +#endif /* !_POSIX_SOURCE */ -#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY) +/* + * Flags for sigprocmask: + */ +#define SIG_BLOCK 1 /* block specified signal set */ +#define SIG_UNBLOCK 2 /* unblock specified signal set */ +#define SIG_SETMASK 3 /* set specified signal set */ struct sigevent { - int sigev_notify; /* Notification type */ - int sigev_signo; /* Signal number */ - union sigval sigev_value; /* Signal value */ + int sigev_notify; /* Notification type */ + int sigev_signo; /* Signal number */ + union sigval sigev_value; /* Signal value */ }; #define SIGEV_NONE 0 /* No async notification */ #define SIGEV_SIGNAL 1 /* Generate a queued signal */ -#endif /* ! _ANSI_SOURCE && _P1003_1B_VISIBLE_HISTORICALLY */ +#endif /* !_ANSI_SOURCE */ /* * For historical reasons; programs expect signal's return value to be |
