cgroup-util: helper to cg_get_attribute and convert to uint64_t

A common pattern in the codebase is reading a cgroup memory value
and converting it to a uint64_t. Let's make it a helper and refactor a
few places to use it so it's more concise.

1 files changed, 1 insertions, 8 deletions

diff --git a/src/basic/limits-util.c b/src/basic/limits-util.c
index a74d8197ea..43f6b6f68a 100644
--- a/src/basic/limits-util.c
+++ b/src/basic/limits-util.c
@@ -120,16 +120,9 @@ uint64_t system_tasks_max(void) {
         if (r < 0)
                 log_debug_errno(r, "Failed to determine cgroup root path, ignoring: %m");
         else {
-                _cleanup_free_ char *value = NULL;
-
-                r = cg_get_attribute("pids", root, "pids.max", &value);
+                r = cg_get_attribute_as_uint64("pids", root, "pids.max", &b);
                 if (r < 0)
                         log_debug_errno(r, "Failed to read pids.max attribute of cgroup root, ignoring: %m");
-                else if (!streq(value, "max")) {
-                        r = safe_atou64(value, &b);
-                        if (r < 0)
-                                log_debug_errno(r, "Failed to parse pids.max attribute of cgroup root, ignoring: %m");
-                }
         }
 
         return MIN3(TASKS_MAX,