From: Karel Zak <kzak@redhat.com>
Date: Tue, 13 Oct 2009 12:22:33 +0000 (+0200)
Subject: swapon: more robust progname probing
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01373d74ef13014262d599cd9c26c1ec724a2204;p=util-linux

swapon: more robust progname probing

Currently, the 'swapoff' is the default behavior. It means that if you
have a libtool wrapper script in your build directory the executed binary
name is 'lt-swapon' and then "swapon -a" is interpreted as "swapoff -a".

Any random argv[0] should not be interpreted as "swapoff".

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/mount/swapon.c b/mount/swapon.c
index d89c6a96..a66d59d6 100644
--- a/mount/swapon.c
+++ b/mount/swapon.c
@@ -791,6 +791,9 @@ main(int argc, char *argv[]) {
 
 	if (streq(progname, "swapon"))
 		return main_swapon(argc, argv);
-	else
+	else if (streq(progname, "swapoff"))
 		return main_swapoff(argc, argv);
+
+	errx(EXIT_FAILURE, _("'%s' is unsupported program name "
+			"(must be 'swapon' or 'swapoff')."), progname);
 }