init: become session leader

Before exec()ing we need to become session leader otherwise some shells will not be able to correctly initialize job control. Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

init: become session leader
79d5bcf1 · Christian Brauner · Stéphane Graber · 25af2ac7 · 79d5bcf1
Unverified Commit 79d5bcf1 authored Oct 10, 2017 by Christian Brauner Committed by Stéphane Graber Oct 17, 2017
Hide whitespace changes
Inline Side-by-side

Showing with 5 additions and 1 deletion

lxc_init.c src/lxc/tools/lxc_init.c +5 -1

No files found.
--- a/src/lxc/tools/lxc_init.c
+++ b/src/lxc/tools/lxc_init.c
@@ -77,7 +77,7 @@ static void usage(void) {

 int main(int argc, char *argv[])
 {
-	pid_t pid;
+	pid_t pid, sid;
 	int err;
 	char **aargv;
 	sigset_t mask, omask;
@@ -189,6 +189,10 @@ int main(int argc, char *argv[])
 			exit(EXIT_FAILURE);
 		}

+		sid = setsid();
+		if (sid < 0)
+			DEBUG("Failed to make child session leader");
+
 		NOTICE("About to exec '%s'", aargv[0]);

 		ret = execvp(aargv[0], aargv);