diff options
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 3ac6f5b..192f88c 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1102,7 +1102,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts) if (opts->release_agent) return -EINVAL; opts->release_agent = - kstrndup(token + 14, PATH_MAX, GFP_KERNEL); + kstrndup(token + 14, PATH_MAX - 1, GFP_KERNEL); if (!opts->release_agent) return -ENOMEM; } else if (!strncmp(token, "name=", 5)) { @@ -1123,7 +1123,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts) if (opts->name) return -EINVAL; opts->name = kstrndup(name, - MAX_CGROUP_ROOT_NAMELEN, + MAX_CGROUP_ROOT_NAMELEN - 1, GFP_KERNEL); if (!opts->name) return -ENOMEM; @@ -1623,6 +1623,8 @@ static struct file_system_type cgroup_fs_type = { .kill_sb = cgroup_kill_sb, }; +static struct kobject *cgroup_kobj; + static inline struct cgroup *__d_cgrp(struct dentry *dentry) { return dentry->d_fsdata; @@ -1788,6 +1790,29 @@ out: return retval; } +/** + * cgroup_attach_task_current_cg - attach task 'tsk' to current task's cgroup + * @tsk: the task to be attached + */ +int cgroup_attach_task_current_cg(struct task_struct *tsk) +{ + struct cgroupfs_root *root; + struct cgroup *cur_cg; + int retval = 0; + + cgroup_lock(); + for_each_active_root(root) { + cur_cg = task_cgroup_from_root(current, root); + retval = cgroup_attach_task(cur_cg, tsk); + if (retval) + break; + } + cgroup_unlock(); + + return retval; +} +EXPORT_SYMBOL_GPL(cgroup_attach_task_current_cg); + /* * Attach task with pid 'pid' to cgroup 'cgrp'. Call with cgroup_mutex * held. May take task_lock of task @@ -3871,9 +3896,18 @@ int __init cgroup_init(void) hhead = css_set_hash(init_css_set.subsys); hlist_add_head(&init_css_set.hlist, hhead); BUG_ON(!init_root_id(&rootnode)); + + cgroup_kobj = kobject_create_and_add("cgroup", fs_kobj); + if (!cgroup_kobj) { + err = -ENOMEM; + goto out; + } + err = register_filesystem(&cgroup_fs_type); - if (err < 0) + if (err < 0) { + kobject_put(cgroup_kobj); goto out; + } proc_create("cgroups", 0, NULL, &proc_cgroupstats_operations); |