1 files changed, 36 insertions, 0 deletions
diff --git a/release/src/router/busybox/miscutils/setsid.c b/release/src/router/busybox/miscutils/setsid.c
new file mode 100644
index 00000000..d7de1f14
--- /dev/null
+++ b/release/src/router/busybox/miscutils/setsid.c
@@ -0,0 +1,36 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setsid.c -- execute a command in a new session
+ * Rick Sladkey <jrs@world.std.com>
+ * In the public domain.
+ *
+ * 1999-02-22 Arkadiusz Mickiewicz <misiek@pld.ORG.PL>
+ * - added Native Language Support
+ *
+ * 2001-01-18 John Fremlin <vii@penguinpowered.com>
+ * - fork in case we are process group leader
+ *
+ * 2004-11-12 Paul Fox
+ * - busyboxed
+ */
+
+#include "libbb.h"
+
+int setsid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int setsid_main(int argc UNUSED_PARAM, char **argv)
+{
+	if (!argv[1])
+		bb_show_usage();
+
+	/* setsid() is allowed only when we are not a process group leader.
+	 * Otherwise our PID serves as PGID of some existing process group
+	 * and cannot be used as PGID of a new process group. */
+	if (getpgrp() == getpid())
+		if (fork_or_rexec(argv))
+			exit(EXIT_SUCCESS); /* parent */
+
+	setsid();  /* no error possible */
+
+	BB_EXECVP(argv[1], argv + 1);
+	bb_simple_perror_msg_and_die(argv[1]);
+}