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Date: Fri, 23 Feb 2018 13:09:35 +0100
From: Julien Ramseier <j.ramseier@...il.com>
To: musl@...ts.openwall.com
Subject: [PATCH] sigtimedwait: allow failing with EINTR
According to POSIX, sigtimedwait(2) is allowed to fail
with EINTR, while sigwait(3) is not, so move the retry loop there.
---
diff --git a/src/signal/sigtimedwait.c b/src/signal/sigtimedwait.c
index 0739986b..97a526da 100644
--- a/src/signal/sigtimedwait.c
+++ b/src/signal/sigtimedwait.c
@@ -1,13 +1,8 @@
#include <signal.h>
-#include <errno.h>
#include "syscall.h"
#include "libc.h"
int sigtimedwait(const sigset_t *restrict mask, siginfo_t *restrict si, const struct timespec *restrict timeout)
{
- int ret;
- do ret = syscall_cp(SYS_rt_sigtimedwait, mask,
- si, timeout, _NSIG/8);
- while (ret<0 && errno==EINTR);
- return ret;
+ return syscall_cp(SYS_rt_sigtimedwait, mask, si, timeout, _NSIG/8);
}
diff --git a/src/signal/sigwait.c b/src/signal/sigwait.c
index c8822eea..53d04803 100644
--- a/src/signal/sigwait.c
+++ b/src/signal/sigwait.c
@@ -1,10 +1,13 @@
+#include <errno.h>
#include <signal.h>
int sigwait(const sigset_t *restrict mask, int *restrict sig)
{
+ int ret;
siginfo_t si;
- if (sigtimedwait(mask, &si, 0) < 0)
- return -1;
+ do ret = sigtimedwait(mask, &si, 0);
+ while (ret<0 && errno==EINTR);
+ if (ret<0) return -1;
*sig = si.si_signo;
return 0;
}
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