68 lines
996 B
C
68 lines
996 B
C
#ifndef _NO_SIGSET
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#include <signal.h>
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#include <errno.h>
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#if defined(SIG_SETMASK) && NSIG <= 32 /* easier than trying to remove from Makefile */
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#undef sigemptyset
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int
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sigemptyset (sigset_t * set)
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{
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*set = (sigset_t) 0;
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return 0;
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}
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#undef sigfillset
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int
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sigfillset (sigset_t * set)
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{
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*set = ~((sigset_t) 0);
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return 0;
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}
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#undef sigaddset
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int
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sigaddset (sigset_t * set, int signo)
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{
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if (signo >= NSIG || signo <= 0)
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{
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errno = EINVAL;
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return -1;
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}
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*set |= 1 << (signo - 1);
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return 0;
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}
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#undef sigdelset
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int
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sigdelset (sigset_t * set, int signo)
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{
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if (signo >= NSIG || signo <= 0)
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{
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errno = EINVAL;
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return -1;
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}
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*set &= ~(1 << (signo - 1));
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return 0;
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}
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#undef sigismember
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int
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sigismember (const sigset_t * set, int signo)
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{
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if (signo >= NSIG || signo <= 0)
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{
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errno = EINVAL;
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return -1;
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}
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if (*set & (1 << (signo - 1)))
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return 1;
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else
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return 0;
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}
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#endif /* SIG_SETMASK */
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#endif /* _NO_SIGSET */
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