diff options
| author | Peter Stephenson <pws@users.sourceforge.net> | 2007-05-01 09:35:04 +0000 |
|---|---|---|
| committer | Peter Stephenson <pws@users.sourceforge.net> | 2007-05-01 09:35:04 +0000 |
| commit | 6e5279f8b4ba43133cf1db1f76b8e536da98797d (patch) | |
| tree | e4cbc45db2250c6cac01a76ab30f5ccf87ee59ac /Src/signals.c | |
| parent | 19dccc355a3a6316a60abdb739bbec7f9ce9a362 (diff) | |
| download | zsh-6e5279f8b4ba43133cf1db1f76b8e536da98797d.tar.gz zsh-6e5279f8b4ba43133cf1db1f76b8e536da98797d.tar.xz zsh-6e5279f8b4ba43133cf1db1f76b8e536da98797d.zip | |
Guillaume Chazarain: 23364: fix race in POSIX signal blocking
by using local variables
Diffstat (limited to 'Src/signals.c')
| -rw-r--r-- | Src/signals.c | 33 |
1 files changed, 13 insertions, 20 deletions
diff --git a/Src/signals.c b/Src/signals.c index 8f5bc49b8..ba01e2bc9 100644 --- a/Src/signals.c +++ b/Src/signals.c @@ -200,15 +200,6 @@ signal_mask(int sig) * set. Return the old signal set. */ /**/ -#ifdef POSIX_SIGNALS - -/**/ -mod_export sigset_t dummy_sigset1, dummy_sigset2; - -/**/ -#else - -/**/ #ifndef BSD_SIGNALS sigset_t @@ -216,7 +207,11 @@ signal_block(sigset_t set) { sigset_t oset; -#ifdef SYSV_SIGNALS +#ifdef POSIX_SIGNALS + sigprocmask(SIG_BLOCK, &set, &oset); + +#else +# ifdef SYSV_SIGNALS int i; oset = blocked_set; @@ -226,7 +221,7 @@ signal_block(sigset_t set) sighold(i); } } -#else /* NO_SIGNAL_BLOCKING */ +# else /* NO_SIGNAL_BLOCKING */ /* We will just ignore signals if the system doesn't have * * the ability to block them. */ int i; @@ -238,7 +233,8 @@ signal_block(sigset_t set) signal_ignore(i); } } -#endif /* SYSV_SIGNALS */ +# endif /* SYSV_SIGNALS */ +#endif /* POSIX_SIGNALS */ return oset; } @@ -246,19 +242,17 @@ signal_block(sigset_t set) /**/ #endif /* BSD_SIGNALS */ -/**/ -#endif /* POSIX_SIGNALS */ - /* Unblock the signals in the given signal * * set. Return the old signal set. */ -#ifndef POSIX_SIGNALS - sigset_t signal_unblock(sigset_t set) { sigset_t oset; - + +#ifdef POSIX_SIGNALS + sigprocmask(SIG_UNBLOCK, &set, &oset); +#else # ifdef BSD_SIGNALS sigfillset(&oset); oset = sigsetmask(oset); @@ -288,12 +282,11 @@ signal_unblock(sigset_t set) } # endif /* SYSV_SIGNALS */ # endif /* BSD_SIGNALS */ +#endif /* POSIX_SIGNALS */ return oset; } -#endif /* POSIX_SIGNALS */ - /* set the process signal mask to * * be the given signal mask */ |