diff options
Diffstat (limited to 'src/api.c')
-rw-r--r-- | src/api.c | 76 |
1 files changed, 76 insertions, 0 deletions
@@ -3232,3 +3232,79 @@ out_exit: pthread_rwlock_unlock(&cg_mount_table_lock); return ret; } + + +int cgroup_get_all_controller_end(void **handle) +{ + FILE *proc_cgroup = (FILE *) *handle; + + if (!cgroup_initialized) + return ECGROUPNOTINITIALIZED; + + if (!proc_cgroup) + return ECGINVAL; + + fclose(proc_cgroup); + *handle = NULL; + + return 0; +} + + +int cgroup_get_all_controller_next(void **handle, struct controller_data *info) +{ + FILE *proc_cgroup = (FILE *) *handle; + int err = 0; + int hierarchy, num_cgroups, enabled; + char subsys_name[FILENAME_MAX]; + + if (!cgroup_initialized) + return ECGROUPNOTINITIALIZED; + + if (!proc_cgroup) + return ECGINVAL; + + if (!info) + return ECGINVAL; + + err = fscanf(proc_cgroup, "%s %d %d %d\n", subsys_name, + &hierarchy, &num_cgroups, &enabled); + + if (err != 4) + return ECGEOF; + + strncpy(info->name, subsys_name, FILENAME_MAX); + info->name[FILENAME_MAX-1] = '\0'; + info->hierarchy = hierarchy; + info->num_cgroups = num_cgroups; + info->enabled = enabled; + + return 0; +} + + +int cgroup_get_all_controller_begin(void **handle, struct controller_data *info) +{ + FILE *proc_cgroup = NULL; + char buf[FILENAME_MAX]; + + if (!cgroup_initialized) + return ECGROUPNOTINITIALIZED; + + if (!info) + return ECGINVAL; + + proc_cgroup = fopen("/proc/cgroups", "r"); + if (!proc_cgroup) { + last_errno = errno; + return ECGOTHER; + } + + if (!fgets(buf, FILENAME_MAX, proc_cgroup)) { + last_errno = errno; + return ECGOTHER; + } + *handle = proc_cgroup; + + return cgroup_get_all_controller_next(handle, info); +} |