diff options
Diffstat (limited to 'Python/pythonrun.c')
| -rw-r--r-- | Python/pythonrun.c | 43 |
1 files changed, 19 insertions, 24 deletions
diff --git a/Python/pythonrun.c b/Python/pythonrun.c index 92e051b..e9f4765 100644 --- a/Python/pythonrun.c +++ b/Python/pythonrun.c @@ -1576,13 +1576,13 @@ static void initsigs(void) { #ifdef SIGPIPE - signal(SIGPIPE, SIG_IGN); + PyOS_setsig(SIGPIPE, SIG_IGN); #endif #ifdef SIGXFZ - signal(SIGXFZ, SIG_IGN); + PyOS_setsig(SIGXFZ, SIG_IGN); #endif #ifdef SIGXFSZ - signal(SIGXFSZ, SIG_IGN); + PyOS_setsig(SIGXFSZ, SIG_IGN); #endif PyOS_InitInterrupts(); /* May imply initsignal() */ } @@ -1646,18 +1646,14 @@ PyOS_getsig(int sig) { #ifdef HAVE_SIGACTION struct sigaction context; - /* Initialize context.sa_handler to SIG_ERR which makes about as - * much sense as anything else. It should get overwritten if - * sigaction actually succeeds and otherwise we avoid an - * uninitialized memory read. - */ - context.sa_handler = SIG_ERR; - sigaction(sig, NULL, &context); + if (sigaction(sig, NULL, &context) == -1) + return SIG_ERR; return context.sa_handler; #else PyOS_sighandler_t handler; handler = signal(sig, SIG_IGN); - signal(sig, handler); + if (handler != SIG_ERR) + signal(sig, handler); return handler; #endif } @@ -1666,20 +1662,19 @@ PyOS_sighandler_t PyOS_setsig(int sig, PyOS_sighandler_t handler) { #ifdef HAVE_SIGACTION - struct sigaction context; - PyOS_sighandler_t oldhandler; - /* Initialize context.sa_handler to SIG_ERR which makes about as - * much sense as anything else. It should get overwritten if - * sigaction actually succeeds and otherwise we avoid an - * uninitialized memory read. - */ - context.sa_handler = SIG_ERR; - sigaction(sig, NULL, &context); - oldhandler = context.sa_handler; + struct sigaction context, ocontext; context.sa_handler = handler; - sigaction(sig, &context, NULL); - return oldhandler; + sigemptyset(&context.sa_mask); + context.sa_flags = 0; + if (sigaction(sig, &context, &ocontext) == -1) + return SIG_ERR; + return ocontext.sa_handler; #else - return signal(sig, handler); + PyOS_sighandler_t oldhandler; + oldhandler = signal(sig, handler); +#ifdef HAVE_SIGINTERRUPT + siginterrupt(sig, 1); +#endif + return oldhandler; #endif } |