cgroup: treat non-existing cgroups like empty ones, to deal with races

[elogind.git] / src / strv.c

diff --git a/src/strv.c b/src/strv.c
index a66369602bbbc98051fbd675628fcfdc1dea47f9..9dbab2937cd3c39c525d042c5056bc237a6a9913 100644 (file)
--- a/src/strv.c
+++ b/src/strv.c
@@ -539,3 +539,20 @@ fail:
         return NULL;
 
 }
+
+char *strv_env_get_with_length(char **l, const char *name, size_t k) {
+        char **i;
+
+        assert(name);
+
+        STRV_FOREACH(i, l)
+                if (strncmp(*i, name, k) == 0 &&
+                    (*i)[k] == '=')
+                        return *i + k + 1;
+
+        return NULL;
+}
+
+char *strv_env_get(char **l, const char *name) {
+        return strv_env_get_with_length(l, name, strlen(name));
+}