diff options
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/sigvec.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/sysdeps/posix/sigvec.c b/sysdeps/posix/sigvec.c index d1b80e297a..52f514062c 100644 --- a/sysdeps/posix/sigvec.c +++ b/sysdeps/posix/sigvec.c @@ -23,7 +23,9 @@ /* Include macros to convert between `sigset_t' and old-style mask. */ #include <sigset-cvt-mask.h> -/* We use a wrapper handler to support SV_RESETHAND. */ +#ifndef SA_RESETHAND +/* When sigaction lacks the extension bit for it, + we use a wrapper handler to support SV_RESETHAND. */ struct sigvec_wrapper_data { __sighandler_t sw_handler; @@ -33,6 +35,7 @@ struct sigvec_wrapper_data static void sigvec_wrapper_handler __P ((int sig)); static struct sigvec_wrapper_data sigvec_wrapper_data[NSIG]; +#endif /* If VEC is non-NULL, set the handler for SIG to the `sv_handler' member @@ -48,7 +51,9 @@ __sigvec (sig, vec, ovec) { struct sigaction old; +#ifndef SA_RESETHAND if (vec == NULL || !(vec->sv_flags & SV_RESETHAND)) +#endif { struct sigaction new, *n; @@ -78,6 +83,10 @@ __sigvec (sig, vec, ovec) if (!(sv_flags & SV_INTERRUPT)) sa_flags |= SA_RESTART; #endif +#ifdef SA_RESETHAND + if (sv_flags & SV_RESETHAND) + sa_flags |= SA_RESETHAND; +#endif n = &new; new.sa_handler = handler; if (sigset_set_old_mask (&new.sa_mask, mask) < 0) @@ -88,6 +97,7 @@ __sigvec (sig, vec, ovec) if (__sigaction (sig, n, &old) < 0) return -1; } +#ifndef SA_RESETHAND else { __sighandler_t handler; @@ -106,6 +116,7 @@ __sigvec (sig, vec, ovec) if (__sigaction (sig, &wrapper, &old) < 0) return -1; } +#endif if (ovec != NULL) { @@ -117,12 +128,17 @@ __sigvec (sig, vec, ovec) handler = old.sa_handler; sv_flags = 0; sa_flags = old.sa_flags; +#ifndef SA_RESETHAND if (handler == sigvec_wrapper_handler) { handler = sigvec_wrapper_data[sig].sw_handler; /* should we use data->sw_mask?? */ sv_flags |= SV_RESETHAND; } +#else + if (sa_flags & SA_RESETHAND) + sv_flags |= SV_RESETHAND; +#endif mask = sigset_get_old_mask (&old.sa_mask); #ifdef SA_ONSTACK if (sa_flags & SA_ONSTACK) @@ -142,7 +158,7 @@ __sigvec (sig, vec, ovec) weak_alias (__sigvec, sigvec) - +#ifndef SA_RESETHAND static void sigvec_wrapper_handler (sig) int sig; @@ -163,3 +179,4 @@ sigvec_wrapper_handler (sig) (*handler) (sig); } +#endif |