[Libcg-devel] [PATCH] api.c: fix infinite loop

[Nikola F. <nf...@re...>]

If getgrnam or getpwuid functions failed, the program entered
an infinite loop, because the rule pointer was never advanced.
This is now fixed by updating the pointer before continuing
to the next iteration.
---
 src/api.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/api.c b/src/api.c
index d6c9d3a..ef796ac 100644
--- a/src/api.c
+++ b/src/api.c
@@ -2775,13 +2775,17 @@ static struct cgroup_rule *cgroup_find_matching_rule_uid_gid(uid_t uid,
 			/* Get the group data. */
 			sp = &(rule->username[1]);
 			grp = getgrnam(sp);
-			if (!grp)
+			if (!grp) {
+				rule = rule->next;
 				continue;
+			}
 
 			/* Get the data for UID. */
 			usr = getpwuid(uid);
-			if (!usr)
+			if (!usr) {
+				rule = rule->next;
 				continue;
+			}
 
 			/* If UID is a member of group, we matched. */
 			for (i = 0; grp->gr_mem[i]; i++) {
-- 
2.4.3