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- #include <errno.h>
- #include <signal.h>
- #include <string.h> /* For the real memset prototype. */
- sigset_t _sigintr attribute_hidden;
- __sighandler_t
- __bsd_signal (int sig, __sighandler_t handler)
- {
- struct sigaction act, oact;
-
- if (handler == SIG_ERR || sig < 1 || sig >= NSIG)
- {
- __set_errno (EINVAL);
- return SIG_ERR;
- }
- act.sa_handler = handler;
- if (__sigemptyset (&act.sa_mask) < 0
- || __sigaddset (&act.sa_mask, sig) < 0)
- return SIG_ERR;
- act.sa_flags = __sigismember (&_sigintr, sig) ? 0 : SA_RESTART;
- if (sigaction (sig, &act, &oact) < 0)
- return SIG_ERR;
- return oact.sa_handler;
- }
- weak_alias (__bsd_signal, bsd_signal)
- weak_alias (__bsd_signal, signal)
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