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open_without_symlink: Account when prefix is empty string

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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>
This commit is contained in:
Bogdan Purcareata 2016-01-08 15:38:35 +00:00 committed by Stéphane Graber
parent 020104c3ad
commit 01074e5b34
1 changed files with 1 additions and 1 deletions
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2
src/lxc/utils.c
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@ -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'",