uint64_t mem, lim;
size_t ps;
long sc;
+ int r;
/* We return this as uint64_t in case we are running as 32bit process on a 64bit kernel with huge amounts of
* memory.
ps = page_size();
mem = (uint64_t) sc * (uint64_t) ps;
- if (cg_get_root_path(&root) < 0)
+ r = cg_get_root_path(&root);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to determine root cgroup, ignoring cgroup memory limit: %m");
return mem;
+ }
- if (cg_get_attribute("memory", root, "memory.limit_in_bytes", &value))
+ r = cg_all_unified();
+ if (r < 0) {
+ log_debug_errno(r, "Failed to determine root unified mode, ignoring cgroup memory limit: %m");
return mem;
+ }
+ if (r > 0) {
+ r = cg_get_attribute("memory", root, "memory.max", &value);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to read memory.max cgroup attribute, ignoring cgroup memory limit: %m");
+ return mem;
+ }
- if (safe_atou64(value, &lim) < 0)
+ if (streq(value, "max"))
+ return mem;
+ } else {
+ r = cg_get_attribute("memory", root, "memory.limit_in_bytes", &value);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to read memory.limit_in_bytes cgroup attribute, ignoring cgroup memory limit: %m");
+ return mem;
+ }
+ }
+
+ r = safe_atou64(value, &lim);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to parse cgroup memory limit '%s', ignoring: %m", value);
+ return mem;
+ }
+ if (lim == UINT64_MAX)
return mem;
/* Make sure the limit is a multiple of our own page size */