logwrap: Replace sigprocmask with pthread_sigmask
sigprocmask has undefined behavior when called from a thread.
Replacing with pthread_sigmask to ensure correct behavior if
logwrap() gets called from a thread.
Change-Id: I77b6959d345eac8d7b90039ed8144ead8c19a00c
diff --git a/logwrapper/logwrap.c b/logwrapper/logwrap.c
index 99a462f..94e0229 100644
--- a/logwrapper/logwrap.c
+++ b/logwrapper/logwrap.c
@@ -69,7 +69,7 @@
sigemptyset(&chldset);
sigaddset(&chldset, SIGCHLD);
- sigprocmask(SIG_UNBLOCK, &chldset, NULL);
+ pthread_sigmask(SIG_UNBLOCK, &chldset, NULL);
while (!found_child) {
if (poll(poll_fds, remote_hung ? 1 : 2, -1) < 0) {
@@ -209,7 +209,7 @@
sigaddset(&blockset, SIGINT);
sigaddset(&blockset, SIGQUIT);
sigaddset(&blockset, SIGCHLD);
- sigprocmask(SIG_BLOCK, &blockset, &oldset);
+ pthread_sigmask(SIG_BLOCK, &blockset, &oldset);
pid = fork();
if (pid < 0) {
@@ -217,7 +217,7 @@
rc = -1;
goto err_fork;
} else if (pid == 0) {
- sigprocmask(SIG_SETMASK, &oldset, NULL);
+ pthread_sigmask(SIG_SETMASK, &oldset, NULL);
close(parent_ptty);
child_ptty = open(child_devname, O_RDWR);
@@ -287,7 +287,7 @@
}
sigaction(SIGCHLD, &oldchldact, NULL);
err_fork:
- sigprocmask(SIG_SETMASK, &oldset, NULL);
+ pthread_sigmask(SIG_SETMASK, &oldset, NULL);
err_ptty:
close(parent_ptty);
err_open: