1 files changed, 53 insertions, 0 deletions
diff --git a/coreutils/nohup.c b/coreutils/nohup.c
new file mode 100644
index 0000000..21adfc1
--- /dev/null
+++ b/coreutils/nohup.c
@@ -0,0 +1,53 @@
+/* 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 Fischer
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "busybox.h"
+
+int nohup_main(int argc, char **argv)
+{
+	int temp, nullfd;
+	char *nohupout, *home = NULL;
+
+	xfunc_error_retval = 127;
+
+	if (argc<2) bb_show_usage();
+
+	nullfd = xopen(bb_dev_null, O_WRONLY|O_APPEND);
+	/* If stdin is a tty, detach from it. */
+	if (isatty(STDIN_FILENO)) dup2(nullfd, 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 dup2(nullfd, STDOUT_FILENO);
+
+	/* If we have a tty on strderr, announce filename and redirect to stdout.
+	 * Else redirect to /dev/null.
+	 */
+	temp = isatty(STDERR_FILENO);
+	if (temp) bb_error_msg("appending to %s", nohupout);
+	dup2(temp ? STDOUT_FILENO : nullfd, STDERR_FILENO);
+	close(nullfd);
+	signal (SIGHUP, SIG_IGN);
+
+	execvp(argv[1],argv+1);
+	if (00 && ENABLE_FEATURE_CLEAN_UP && home) free(nohupout);
+	bb_perror_msg_and_die("%s", argv[1]);
+}