From: Jo-Philipp Wich <jow@openwrt.org>
Date: Sun, 12 Apr 2015 20:18:15 +0000 (+0200)
Subject: block: reject mount sections with relative targets
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=cf8056385c287b98c70376034f0bfc59cc9261ed;p=oweals%2Ffstools.git

block: reject mount sections with relative targets

Specifying relative target paths leads to undefined results and confuses
users. Explicitely reject relative paths with a warning instead of doing
random stuff.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
---

diff --git a/block.c b/block.c
index aecf366..4c8dda9 100644
--- a/block.c
+++ b/block.c
@@ -274,6 +274,13 @@ static int mount_add(struct uci_section *s)
 	if (m->target && !strcmp(m->target, "/overlay"))
 		m->extroot = m->overlay = 1;
 
+	if (m->target && *m->target != '/') {
+		ULOG_WARN("ignoring mount section %s due to invalid target '%s'\n",
+		          s->e.name, m->target);
+		free(m);
+		return -1;
+	}
+
 	if (m->uuid)
 		vlist_add(&mounts, &m->node, m->uuid);
 	else if (m->label)