1 files changed, 78 insertions, 0 deletions
diff --git a/release/src/router/busybox/coreutils/nohup.c b/release/src/router/busybox/coreutils/nohup.c
new file mode 100644
index 00000000..f44e2af6
--- /dev/null
+++ b/release/src/router/busybox/coreutils/nohup.c
@@ -0,0 +1,78 @@
+/* vi: set sw=4 ts=4: */
+/* nohup - invoke a utility immune to hangups.
+ *
+ * Busybox version based on nohup specification at
+ * http://www.opengroup.org/onlinepubs/007904975/utilities/nohup.html
+ *
+ * Copyright 2006 Rob Landley <rob@landley.net>
+ * Copyright 2006 Bernhard Reutner-Fischer
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* Compat info: nohup (GNU coreutils 6.8) does this:
+# nohup true
+nohup: ignoring input and appending output to `nohup.out'
+# nohup true 1>/dev/null
+nohup: ignoring input and redirecting stderr to stdout
+# nohup true 2>zz
+# cat zz
+nohup: ignoring input and appending output to `nohup.out'
+# nohup true 2>zz 1>/dev/null
+# cat zz
+nohup: ignoring input
+# nohup true </dev/null 1>/dev/null
+nohup: redirecting stderr to stdout
+# nohup true </dev/null 2>zz 1>/dev/null
+# cat zz
+  (nothing)
+#
+*/
+
+int nohup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int nohup_main(int argc, char **argv)
+{
+	const char *nohupout;
+	char *home;
+
+	xfunc_error_retval = 127;
+
+	if (argc < 2) bb_show_usage();
+
+	/* If stdin is a tty, detach from it. */
+	if (isatty(STDIN_FILENO)) {
+		/* bb_error_msg("ignoring input"); */
+		close(STDIN_FILENO);
+		xopen(bb_dev_null, O_RDONLY); /* will be fd 0 (STDIN_FILENO) */
+	}
+
+	nohupout = "nohup.out";
+	/* Redirect stdout to nohup.out, either in "." or in "$HOME". */
+	if (isatty(STDOUT_FILENO)) {
+		close(STDOUT_FILENO);
+		if (open(nohupout, O_CREAT|O_WRONLY|O_APPEND, S_IRUSR|S_IWUSR) < 0) {
+			home = getenv("HOME");
+			if (home) {
+				nohupout = concat_path_file(home, nohupout);
+				xopen3(nohupout, O_CREAT|O_WRONLY|O_APPEND, S_IRUSR|S_IWUSR);
+			} else {
+				xopen(bb_dev_null, O_RDONLY); /* will be fd 1 */
+			}
+		}
+		bb_error_msg("appending output to %s", nohupout);
+	}
+
+	/* If we have a tty on stderr, redirect to stdout. */
+	if (isatty(STDERR_FILENO)) {
+		/* if (stdout_wasnt_a_tty)
+			bb_error_msg("redirecting stderr to stdout"); */
+		dup2(STDOUT_FILENO, STDERR_FILENO);
+	}
+
+	signal(SIGHUP, SIG_IGN);
+
+	BB_EXECVP(argv[1], argv+1);
+	bb_simple_perror_msg_and_die(argv[1]);
+}