Add setsid.

1 files changed, 34 insertions, 0 deletions

diff --git a/toys/setsid.c b/toys/setsid.c
new file mode 100644
index 00000000..949f392a
--- /dev/null
+++ b/toys/setsid.c
@@ -0,0 +1,34 @@
+/* vi: set sw=4 ts=4:
+ *
+ * setsid.c - Run program in a new session ID.
+ *
+ * Copyright 2006 Rob Landley <rob@landley.net>
+ *
+ * Not in SUSv3.
+ * See http://www.opengroup.org/onlinepubs/009695399/utilities/
+
+USE_SETSID(NEWTOY(setsid, "^<1t", TOYFLAG_USR|TOYFLAG_BIN))
+
+config SETSID
+	bool "setsid"
+	default y
+	help
+	  usage: setsid [-t] command [args...]
+
+	  Run process in a new session.
+
+	  -t	Grab tty (become foreground process, receiving keyboard signals)
+*/
+
+#include "toys.h"
+
+void setsid_main(void)
+{
+	while (setsid()<0)
+		if (vfork()) _exit(0);
+	if (toys.optflags) {
+		setpgid(0,0);
+		tcsetpgrp(0, getpid());
+	}
+	xexec(toys.optargs);
+}