}
#endif // 0
+bool is_cgroup_fs(const struct statfs *s) {
+ return is_fs_type(s, CGROUP_SUPER_MAGIC) ||
+ is_fs_type(s, CGROUP2_SUPER_MAGIC);
+}
+
+bool fd_is_cgroup_fs(int fd) {
+ struct statfs s;
+
+ if (fstatfs(fd, &s) < 0)
+ return -errno;
+
+ return is_cgroup_fs(&s);
+}
+
static const char *cgroup_controller_table[_CGROUP_CONTROLLER_MAX] = {
[CGROUP_CONTROLLER_CPU] = "cpu",
[CGROUP_CONTROLLER_CPUACCT] = "cpuacct",
#define DEFAULT_TASKS_MAX_PERCENTAGE 15U /* 15% of PIDs, 4915 on default settings */
#define DEFAULT_USER_TASKS_MAX_PERCENTAGE 33U /* 33% of PIDs, 10813 on default settings */
+typedef enum CGroupUnified {
+ CGROUP_UNIFIED_UNKNOWN = -1,
+ CGROUP_UNIFIED_NONE = 0, /* Both systemd and controllers on legacy */
+ CGROUP_UNIFIED_SYSTEMD = 1, /* Only systemd on unified */
+ CGROUP_UNIFIED_ALL = 2, /* Both systemd and controllers on unified */
+} CGroupUnified;
+
/*
* General rules:
*
int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
#endif // 0
+int cg_set_xattr(const char *controller, const char *path, const char *name, const void *value, size_t size, int flags);
+int cg_get_xattr(const char *controller, const char *path, const char *name, void *value, size_t size);
+
int cg_install_release_agent(const char *controller, const char *agent);
int cg_uninstall_release_agent(const char *controller);
#endif // 0
#if 0 /// UNNEEDED by elogind
-int cg_unified(void);
+int cg_all_unified(void);
+int cg_unified(const char *controller);
void cg_unified_flush(void);
bool cg_is_unified_wanted(void);
#endif // 0
bool cg_is_legacy_wanted(void);
+bool cg_is_unified_systemd_controller_wanted(void);
+bool cg_is_legacy_systemd_controller_wanted(void);
const char* cgroup_controller_to_string(CGroupController c) _const_;
CGroupController cgroup_controller_from_string(const char *s) _pure_;
int cg_cpu_shares_parse(const char *s, uint64_t *ret);
int cg_blkio_weight_parse(const char *s, uint64_t *ret);
#endif // 0
+
+bool is_cgroup_fs(const struct statfs *s);
+bool fd_is_cgroup_fs(int fd);
#include "stat-util.h"
#include "string-util.h"
+static bool is_physical_fs(const struct statfs *sfs) {
+ return !is_temporary_fs(sfs) && !is_cgroup_fs(sfs);
+}
+
int rm_rf_children(int fd, RemoveFlags flags, struct stat *root_dev) {
_cleanup_closedir_ DIR *d = NULL;
int ret = 0, r;
+ struct statfs sfs;
assert(fd >= 0);
if (!(flags & REMOVE_PHYSICAL)) {
- r = fd_is_temporary_fs(fd);
+ r = fstatfs(fd, &sfs);
if (r < 0) {
safe_close(fd);
- return r;
+ return -errno;
}
- if (!r) {
+ if (is_physical_fs(&sfs)) {
/* We refuse to clean physical file systems
* with this call, unless explicitly
* requested. This is extra paranoia just to
if (statfs(path, &s) < 0)
return -errno;
- if (!is_temporary_fs(&s)) {
+ if (is_physical_fs(&s)) {
log_error("Attempted to remove disk file system, and we can't allow that.");
return -EPERM;
}