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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSIGNALFD
#include <errno.h>
#include <signal.h>
#include <sys/signalfd.h>
#include <skalibs/selfpipe.h>
#include "selfpipe-internal.h"
int selfpipe_trapset (sigset_t const *set)
{
sigset_t old ;
if (selfpipe_fd < 0) return (errno = EBADF, 0) ;
if (sigprocmask(SIG_SETMASK, set, &old) < 0) return 0 ;
if (signalfd(selfpipe_fd, set, SFD_NONBLOCK | SFD_CLOEXEC) < 0)
{
int e = errno ;
sigprocmask(SIG_SETMASK, &old, 0) ;
errno = e ;
return 0 ;
}
selfpipe_caught = *set ;
return 1 ;
}
#else
#include <skalibs/nonposix.h>
#include <skalibs/bsdsnowflake.h>
#include <errno.h>
#include <signal.h>
#include <skalibs/nsig.h>
#include <skalibs/sig.h>
#include <skalibs/selfpipe.h>
#include "selfpipe-internal.h"
int selfpipe_trapset (sigset_t const *set)
{
unsigned int i = 1 ;
if (selfpipe_fd < 0) return (errno = EBADF, 0) ;
for (; i < SKALIBS_NSIG ; i++)
{
int h = sigismember(set, i) ;
if (h < 0) continue ;
if (h)
{
if (!sig_catch(i, &selfpipe_tophalf)) goto err ;
}
else if (sigismember(&selfpipe_caught, i))
{
if (!sig_restore(i)) goto err ;
}
}
sig_blocknone() ;
selfpipe_caught = *set ;
return 1 ;
err:
{
int e = errno ;
sig_restoreto(set, i) ;
errno = e ;
}
return 0 ;
}
#endif
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