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Last change
on this file since 77 was 2, checked in by bird, 22 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
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File size:
931 bytes
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| 1 | /* Version of sigsetmask.c
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| 2 | Written by Steve Chamberlain (sac@cygnus.com).
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| 3 | Contributed by Cygnus Support.
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| 4 | This file is in the public doamin. */
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| 5 |
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| 6 | /*
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| 7 |
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| 8 | @deftypefn Supplemental int sigsetmask (int @var{set})
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| 9 |
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| 10 | Sets the signal mask to the one provided in @var{set} and returns
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| 11 | the old mask (which, for libiberty's implementation, will always
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| 12 | be the value @code{1}).
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| 13 |
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| 14 | @end deftypefn
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| 15 |
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| 16 | */
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| 17 |
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| 18 | #define _POSIX_SOURCE
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| 19 | #include <ansidecl.h>
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| 20 | /* Including <sys/types.h> seems to be needed by ISC. */
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| 21 | #include <sys/types.h>
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| 22 | #include <signal.h>
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| 23 |
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| 24 | extern void abort PARAMS ((void)) ATTRIBUTE_NORETURN;
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| 25 |
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| 26 | #ifdef SIG_SETMASK
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| 27 | int
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| 28 | DEFUN(sigsetmask,(set),
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| 29 | int set)
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| 30 | {
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| 31 | sigset_t new;
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| 32 | sigset_t old;
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| 33 |
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| 34 | sigemptyset (&new);
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| 35 | if (set != 0) {
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| 36 | abort(); /* FIXME, we don't know how to translate old mask to new */
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| 37 | }
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| 38 | sigprocmask(SIG_SETMASK, &new, &old);
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| 39 | return 1; /* FIXME, we always return 1 as old value. */
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| 40 | }
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| 41 | #endif
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