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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 #include <ansidecl.h>
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19 /* Including <sys/types.h> seems to be needed by ISC. */
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20 #include <sys/types.h>
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21 #include <signal.h>
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22
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23 extern void abort (void) ATTRIBUTE_NORETURN;
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24
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25 #ifdef SIG_SETMASK
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26 int
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27 sigsetmask (int set)
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28 {
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29 sigset_t new_sig;
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30 sigset_t old_sig;
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31
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32 sigemptyset (&new_sig);
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33 if (set != 0) {
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34 abort(); /* FIXME, we don't know how to translate old mask to new */
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35 }
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36 sigprocmask(SIG_SETMASK, &new_sig, &old_sig);
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37 return 1; /* FIXME, we always return 1 as old value. */
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38 }
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39 #endif
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