Quentin Smith
65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
/* ISC license. */
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/* MT-unsafe */
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#include <errno.h>
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#include <signal.h>
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#include "sysdeps.h"
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#include "selfpipe-internal.h"
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#include "selfpipe.h"
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#ifdef HASSIGNALFD
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#include <sys/signalfd.h>
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int selfpipe_trapset (sigset_t const *set)
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{
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sigset_t old ;
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if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
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if (sigprocmask(SIG_SETMASK, set, &old) < 0) return -1 ;
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if (signalfd(selfpipe_fd, set, SFD_NONBLOCK | SFD_CLOEXEC) < 0)
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{
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int e = errno ;
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sigprocmask(SIG_SETMASK, &old, 0) ;
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errno = e ;
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return -1 ;
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}
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selfpipe_caught = *set ;
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return 0 ;
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}
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#else
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#include "sig.h"
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#include "nsig.h"
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int selfpipe_trapset (sigset_t const *set)
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{
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unsigned int i = 1 ;
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if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
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for (; i <= NSIG ; i++)
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{
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register int h = sigismember(set, i) ;
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if (h < 0) continue ;
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if (h)
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{
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if (sig_catcha(i, &selfpipe_ssa) < 0) break ;
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}
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else if (sigismember(&selfpipe_caught, i))
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{
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if (sig_restore(i) < 0) break ;
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}
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}
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if (i <= NSIG)
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{
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int e = errno ;
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sig_restoreto(set, i) ;
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errno = e ;
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return -1 ;
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}
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selfpipe_caught = *set ;
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return 0 ;
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}
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#endif
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