fix possible fd leak via missing O_CLOEXEC in pthread_setname_np

[musl] / src / thread / pthread_setname_np.c

diff --git a/src/thread/pthread_setname_np.c b/src/thread/pthread_setname_np.c
index 82d35e1..fc2d230 100644 (file)
--- a/src/thread/pthread_setname_np.c
+++ b/src/thread/pthread_setname_np.c
@@ -19,7 +19,7 @@ int pthread_setname_np(pthread_t thread, const char *name)
 
        snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid);
        pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
-       if ((fd = open(f, O_WRONLY)) < 0 || write(fd, name, len) < 0) status = errno;
+       if ((fd = open(f, O_WRONLY|O_CLOEXEC)) < 0 || write(fd, name, len) < 0) status = errno;
        if (fd >= 0) close(fd);
        pthread_setcancelstate(cs, 0);
        return status;