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
01074e5b · Bogdan Purcareata · Stéphane Graber · 020104c3 · 01074e5b
Commit 01074e5b authored Jan 08, 2016 by Bogdan Purcareata Committed by Stéphane Graber Jan 28, 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
@@ -1575,7 +1575,7 @@ 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'",