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cgroup-util: modernize cg_get_keyed_attribute()

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- assert on supplied keys being unique
- Reject duplicate attributes with -EBADMSG
- Rename 'ret_values' to just 'values', given we don't
  allocate the array
- Remove now unused cg_get_keyed_attribute_graceful()
This commit is contained in:
Mike Yuan
2025-05-19 21:24:18 +02:00
parent 88f4bf8a8b
commit dbe592a067
3 changed files with 35 additions and 83 deletions
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src/basic/cgroup-util.h
+1 -23
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@@ -226,31 +226,9 @@ int cg_is_delegated_fd(int fd);
int cg_has_coredump_receive(const char *path);
typedef enum {
CG_KEY_MODE_GRACEFUL = 1 << 0,
} CGroupKeyMode;
int cg_set_attribute(const char *controller, const char *path, const char *attribute, const char *value);
int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret);
int cg_get_keyed_attribute_full(const char *controller, const char *path, const char *attribute, char **keys, char **values, CGroupKeyMode mode);
static inline int cg_get_keyed_attribute(
const char *controller,
const char *path,
const char *attribute,
char **keys,
char **ret_values) {
return cg_get_keyed_attribute_full(controller, path, attribute, keys, ret_values, 0);
}
static inline int cg_get_keyed_attribute_graceful(
const char *controller,
const char *path,
const char *attribute,
char **keys,
char **ret_values) {
return cg_get_keyed_attribute_full(controller, path, attribute, keys, ret_values, CG_KEY_MODE_GRACEFUL);
}
int cg_get_keyed_attribute(const char *controller, const char *path, const char *attribute, char * const *keys, char **values);
int cg_get_attribute_as_uint64(const char *controller, const char *path, const char *attribute, uint64_t *ret);