62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/* libc/sys/linux/signal.c - Signal handling functions */
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/* Written 2000 by Werner Almesberger */
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#include <signal.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <bits/sigset.h>
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#include <machine/syscall.h>
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/* avoid name space pollution */
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#define __NR___sgetmask __NR_sgetmask
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#define __NR___ssetmask __NR_ssetmask
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#define __NR___sigsuspend __NR_sigsuspend
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_syscall2(int,kill,pid_t,pid,int,sig)
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_syscall2(__sighandler_t,signal,int,signum,__sighandler_t,handler)
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_syscall3(int,sigaction,int,signum,const struct sigaction *,act,
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struct sigaction *,oldact)
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_syscall1(int,sigpending,sigset_t *,set)
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_syscall0(int,pause)
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_syscall1(unsigned int,alarm,unsigned int,seconds)
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_syscall3(int,sigprocmask,int,how,const sigset_t *,set,sigset_t *,oldset)
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static _syscall0(int,__sgetmask)
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static _syscall1(int,__ssetmask,int,newmask)
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static _syscall3(int,__sigsuspend,int,arg1,int,arg2,int,mask)
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int sigsuspend (const sigset_t *mask)
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{
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return __sigsuspend(0,0,((__sigset_t *)mask)->__val[0]);
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}
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int sigsetmask(int newmask) /* BSD */
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{
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return __ssetmask(newmask);
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}
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int sigmask(int signum) /* BSD */
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{
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return 1 << signum;
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}
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int sigblock(int mask) /* BSD */
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{
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return __ssetmask(mask | __sgetmask());
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}
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int raise(int sig)
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{
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return kill(getpid(),sig);
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}
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const char *const sys_siglist[] = {
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#include "siglist.inc"
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};
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