/* sigset.c - signal set manipulation functions */
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/* sigset.c - signal set manipulation functions */
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/* Copyright 2002, Red Hat Inc. */
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/* Copyright 2002, Red Hat Inc. */
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/* Note: these are currently grouped together in one file so that
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/* Note: these are currently grouped together in one file so that
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it will override the default version in the libc/unix
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it will override the default version in the libc/unix
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directory which has grouped all functions in one file. */
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directory which has grouped all functions in one file. */
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/* sigaddset function */
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/* sigaddset function */
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#include <signal.h>
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#include <signal.h>
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#include <bits/sigset.h>
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#include <bits/sigset.h>
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#include <errno.h>
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#include <errno.h>
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#include <string.h>
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#include <string.h>
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#include <machine/weakalias.h>
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#include <machine/weakalias.h>
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int
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int
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sigaddset (sigset_t *set, const int signo)
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sigaddset (sigset_t *set, const int signo)
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{
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{
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int index, mask;
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int index, mask;
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__sigset_t *st = (__sigset_t *)set;
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__sigset_t *st = (__sigset_t *)set;
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if (signo > NSIG)
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if (signo > NSIG)
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{
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{
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errno = EINVAL;
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errno = EINVAL;
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return -1;
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return -1;
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}
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}
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index = (signo - 1) / (8 * sizeof(long));
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index = (signo - 1) / (8 * sizeof(long));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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st->__val[index] |= mask;
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st->__val[index] |= mask;
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return 0;
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return 0;
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}
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}
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/* sigdelset function */
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/* sigdelset function */
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int
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int
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sigdelset (sigset_t *set, const int signo)
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sigdelset (sigset_t *set, const int signo)
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{
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{
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int index, mask;
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int index, mask;
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__sigset_t *st = (__sigset_t *)set;
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__sigset_t *st = (__sigset_t *)set;
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if (signo > NSIG)
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if (signo > NSIG)
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{
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{
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errno = EINVAL;
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errno = EINVAL;
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return -1;
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return -1;
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}
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}
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index = (signo - 1) / (8 * sizeof(long));
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index = (signo - 1) / (8 * sizeof(long));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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st->__val[index] &= ~mask;
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st->__val[index] &= ~mask;
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return 0;
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return 0;
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}
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}
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/* sigemptyset function */
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/* sigemptyset function */
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int
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int
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sigemptyset (sigset_t *set)
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sigemptyset (sigset_t *set)
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{
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{
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int size = NSIG / 8;
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int size = NSIG / 8;
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__sigset_t *st = (__sigset_t *)set;
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__sigset_t *st = (__sigset_t *)set;
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memset (st->__val, 0, size);
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memset (st->__val, 0, size);
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return 0;
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return 0;
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}
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}
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/* sigfillset function */
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/* sigfillset function */
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int
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int
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sigfillset (sigset_t *set)
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sigfillset (sigset_t *set)
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{
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{
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int size = NSIG / 8;
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int size = NSIG / 8;
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__sigset_t *st = (__sigset_t *)set;
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__sigset_t *st = (__sigset_t *)set;
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memset (st->__val, 0xff, size);
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memset (st->__val, 0xff, size);
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return 0;
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return 0;
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}
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}
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/* sigismember function */
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/* sigismember function */
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int
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int
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sigismember (const sigset_t *set, int signo)
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sigismember (const sigset_t *set, int signo)
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{
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{
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int index, mask;
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int index, mask;
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__sigset_t *st = (__sigset_t *)set;
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__sigset_t *st = (__sigset_t *)set;
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if (signo > NSIG)
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if (signo > NSIG)
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{
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{
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errno = EINVAL;
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errno = EINVAL;
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return -1;
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return -1;
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}
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}
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index = (signo - 1) / (8 * sizeof(long));
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index = (signo - 1) / (8 * sizeof(long));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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mask = 1 << ((signo - 1) % (8 * sizeof(long)));
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return (st->__val[index] & mask) != 0;
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return (st->__val[index] & mask) != 0;
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}
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}
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