191 lines
6.0 KiB
C
191 lines
6.0 KiB
C
/*
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* Copyright (c) 1986 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef NSIG
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#include <sys/types.h>
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#define NSIG 32
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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 SIGIOT /* compatibility */
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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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#define SIGURG 16 /* urgent condition on IO channel */
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#define SIGSTOP 17 /* sendable 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 /* to parent on child stop or exit */
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#define SIGCLD SIGCHLD /* compatibility */
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#define SIGTTIN 21 /* to readers pgrp upon background tty read */
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#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
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#define SIGIO 23 /* input/output possible signal */
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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 size changes */
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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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typedef void (*sig_t) (int); /* type of signal function */
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#define SIG_ERR (sig_t) -1
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#define SIG_DFL (sig_t) 0
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#define SIG_IGN (sig_t) 1
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typedef unsigned long sigset_t;
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/*
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* Signal vector "template" used in sigaction call.
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*/
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struct sigaction {
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sig_t sa_handler; /* signal handler */
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sigset_t sa_mask; /* signal mask to apply */
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int sa_flags; /* see signal options below */
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};
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#define SA_ONSTACK 0x0001 /* take signal on signal stack */
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#define SA_RESTART 0x0002 /* restart system on signal return */
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#define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */
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#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
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/*
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* Flags for sigprocmask:
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*/
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#define SIG_BLOCK 1 /* block specified signal set */
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#define SIG_UNBLOCK 2 /* unblock specified signal set */
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#define SIG_SETMASK 3 /* set specified signal set */
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/*
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* Structure used in sigaltstack call.
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*/
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struct sigaltstack {
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char *ss_base; /* signal stack base */
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int ss_size; /* signal stack length */
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int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */
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};
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#define MINSIGSTKSZ 128 /* minimum allowable stack */
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#define SIGSTKSZ (MINSIGSTKSZ + 384) /* recommended stack size */
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/*
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* 4.3 compatibility:
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* Signal vector "template" used in sigvec call.
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*/
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struct sigvec {
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sig_t sv_handler; /* signal handler */
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long sv_mask; /* signal mask to apply */
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int sv_flags; /* see signal options below */
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};
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#define SV_ONSTACK SA_ONSTACK /* take signal on signal stack */
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#define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
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#define sv_onstack sv_flags /* isn't compatibility wonderful! */
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/*
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* 4.3 compatibility:
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* Structure used in sigstack call.
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*/
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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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/*
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* Information pushed on stack when a signal is delivered.
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* This is used by the kernel to restore state following
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* execution of the signal handler. It is also made available
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* to the handler to allow it to properly restore state if
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* a non-standard exit is performed.
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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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long sc_mask; /* signal mask to restore */
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int sc_align[2]; /* align to 16 bytes */
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int sc_r1; /* r1 to restore */
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int sc_r2; /* and other registers */
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int sc_r3;
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int sc_r4;
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int sc_r5;
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int sc_r6;
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int sc_r7;
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int sc_r8;
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int sc_r9;
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int sc_r10;
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int sc_r11;
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int sc_r12;
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int sc_r13;
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int sc_r14;
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int sc_r15;
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int sc_r16;
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int sc_r17;
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int sc_r18;
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int sc_r19;
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int sc_r20;
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int sc_r21;
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int sc_r22;
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int sc_r23;
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int sc_r24;
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int sc_r25;
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int sc_gp;
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int sc_sp; /* sp to restore */
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int sc_fp;
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int sc_ra;
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int sc_lo;
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int sc_hi;
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int sc_pc; /* pc to restore */
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};
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/*
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* Macro for converting signal number to a mask suitable for
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* sigblock().
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*/
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#define sigmask(m) (1L << ((m)-1))
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#define sigaddset(set, signo) (*(set) |= 1L << ((signo) - 1), 0)
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#define sigdelset(set, signo) (*(set) &= ~(1L << ((signo) - 1)), 0)
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#define sigemptyset(set) (*(set) = (sigset_t)0, (int)0)
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#define sigfillset(set) (*(set) = ~(sigset_t)0, (int)0)
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#define sigismember(set, signo) ((*(set) & (1L << ((signo) - 1))) != 0)
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#ifdef KERNEL
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/* Table of signal properties. */
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extern const char sigprop [NSIG + 1];
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/*
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* Send an interrupt to process.
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*/
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void sendsig (sig_t p, int sig, long mask);
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#else /* KERNEL */
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sig_t signal (int, sig_t);
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int sigaction (int signum, const struct sigaction *act,
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struct sigaction *oldact);
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int sigvec (int sig, struct sigvec *vec, struct sigvec *ovec);
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int kill (pid_t pid, int sig);
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int sigpause (int mask);
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int sigblock (int mask);
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int sigsetmask (int mask);
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int sigprocmask (int how, const sigset_t *set, sigset_t *oldset);
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int siginterrupt (int sig, int flag);
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int sigsuspend (const sigset_t *mask);
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#define BADSIG SIG_ERR
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#endif /* KERNEL */
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#endif /* NSIG */
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