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| author | Rich Felker <dalias@aerifal.cx> | 2011-02-19 10:51:13 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-02-19 10:51:13 -0500 |
| commit | a49c119276742d7d212fb88f83a8f559ca549e72 (patch) | |
| tree | a7da9765943b2858b98beee765258ae3b69a8ea2 | |
| parent | fb11b6b85e1e01daf17228be32d7f98b47517363 (diff) | |
| download | musl-a49c119276742d7d212fb88f83a8f559ca549e72.tar.gz musl-a49c119276742d7d212fb88f83a8f559ca549e72.tar.xz musl-a49c119276742d7d212fb88f83a8f559ca549e72.zip | |
prevent sigprocmask/pthread_sigmask from blocking implementation signals
this code was wrongly disabled because the old version was trying to be too clever and didn't work. replaced it with a simple version for now.
| -rw-r--r-- | src/signal/sigprocmask.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/signal/sigprocmask.c b/src/signal/sigprocmask.c index e89f8765..db27f12a 100644 --- a/src/signal/sigprocmask.c +++ b/src/signal/sigprocmask.c @@ -1,6 +1,7 @@ #include <signal.h> #include "syscall.h" #include "libc.h" +#include "pthread_impl.h" int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old) { @@ -10,11 +11,12 @@ int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old) int __sigprocmask(int how, const sigset_t *set, sigset_t *old) { sigset_t tmp; - /* Quickly mask out bits 32 and 33 (thread control signals) */ - if (0 && how != SIG_UNBLOCK && (set->__bits[4/sizeof *set->__bits] & 3UL<<(32&8*sizeof *set->__bits-1))) { + /* Disallow blocking thread control signals */ + if (how != SIG_UNBLOCK) { tmp = *set; set = &tmp; - tmp.__bits[4/sizeof *set->__bits] &= ~(3UL<<(32&8*sizeof *set->__bits-1)); + sigdelset(&tmp, SIGCANCEL); + sigdelset(&tmp, SIGSYSCALL); } return __libc_sigprocmask(how, set, old); } |