1 files changed, 48 insertions, 0 deletions
diff --git a/util/sbase/setsid.c b/util/sbase/setsid.c
new file mode 100644
index 00000000..9a154d13
--- /dev/null
+++ b/util/sbase/setsid.c
@@ -0,0 +1,48 @@
+/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#include <unistd.h>
+
+#include "util.h"
+
+static int fflag = 0;
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-f] cmd [arg ...]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int savederrno;
+
+	ARGBEGIN {
+	case 'f':
+		fflag = 1;
+		break;
+	default:
+		usage();
+	} ARGEND
+
+	if (!argc)
+		usage();
+
+	if (fflag || getpgrp() == getpid()) {
+		switch (fork()) {
+		case -1:
+			eprintf("fork:");
+		case 0:
+			break;
+		default:
+			return 0;
+		}
+	}
+	if (setsid() < 0)
+		eprintf("setsid:");
+	execvp(argv[0], argv);
+	savederrno = errno;
+	weprintf("execvp %s:", argv[0]);
+
+	_exit(126 + (savederrno == ENOENT));
+}