Don't allow mkfifo to create files such as "--help"

This patch checks if the name of FIFO to be created begins with "-" and
calls usage() if it does.

Regards,
Pavel Roskin

2 files changed, 2 insertions, 2 deletions

diff --git a/coreutils/mkfifo.c b/coreutils/mkfifo.c
index ef3d667..46b1343 100644
--- a/coreutils/mkfifo.c
+++ b/coreutils/mkfifo.c
@@ -60,7 +60,7 @@ extern int mkfifo_main(int argc, char **argv)
 		argc--;
 		argv++;
 	}
-	if (argc < 1)
+	if (argc < 1 || *argv[0] == '-')
 		usage(mkfifo_usage);
 	if (mkfifo(*argv, mode) < 0) {
 		perror("mkfifo");
diff --git a/mkfifo.c b/mkfifo.c
index ef3d667..46b1343 100644
--- a/mkfifo.c
+++ b/mkfifo.c
@@ -60,7 +60,7 @@ extern int mkfifo_main(int argc, char **argv)
 		argc--;
 		argv++;
 	}
-	if (argc < 1)
+	if (argc < 1 || *argv[0] == '-')
 		usage(mkfifo_usage);
 	if (mkfifo(*argv, mode) < 0) {
 		perror("mkfifo");