open_without_symlink: Account when prefix is empty string

In the current implementation, the open_without_symlink function will default to opening the root mount only if the passed rootfs prefix is null. It doesn't account for the case where this prefix is passed as an empty string. Properly handle this second case as well. Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

open_without_symlink: Account when prefix is empty string
5ee0980d · Bogdan Purcareata · Stéphane Graber · e4f62a4d · 5ee0980d
Commit 5ee0980d authored Jan 08, 2016 by Bogdan Purcareata Committed by Stéphane Graber Nov 17, 2016
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utils.c src/lxc/utils.c +1 -1

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--- a/src/lxc/utils.c
+++ b/src/lxc/utils.c
@@ -1267,7 +1267,7 @@ static int open_without_symlink(const char *target, const char *prefix_skip)
 	fulllen = strlen(target);

 	/* make sure prefix-skip makes sense */
-	if (prefix_skip) {
+	if (prefix_skip && strlen(prefix_skip) > 0) {
 		curlen = strlen(prefix_skip);
 		if (!is_subdir(target, prefix_skip, curlen)) {
 			ERROR("WHOA there - target '%s' didn't start with prefix '%s'",