ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 04:33:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'master' into next

Browse Source
This commit is contained in:
James Morris
2009-03-24 10:52:46 +11:00
parent df7f54c012 8e0ee43bc2
commit 703a3cd728
1409 changed files with 58127 additions and 39827 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
kernel/user.c
View File

@@ -72,6 +72,7 @@ static void uid_hash_insert(struct user_struct *up, struct hlist_head *hashent)
static void uid_hash_remove(struct user_struct *up)
{
hlist_del_init(&up->uidhash_node);
put_user_ns(up->user_ns);
}
static struct user_struct *uid_hash_find(uid_t uid, struct hlist_head *hashent)
@@ -285,14 +286,12 @@ int __init uids_sysfs_init(void)
/* work function to remove sysfs directory for a user and free up
* corresponding structures.
*/
static void remove_user_sysfs_dir(struct work_struct *w)
static void cleanup_user_struct(struct work_struct *w)
{
struct user_struct *up = container_of(w, struct user_struct, work);
unsigned long flags;
int remove_user = 0;
if (up->user_ns != &init_user_ns)
return;
/* Make uid_hash_remove() + sysfs_remove_file() + kobject_del()
* atomic.
*/
@@ -311,9 +310,11 @@ static void remove_user_sysfs_dir(struct work_struct *w)
if (!remove_user)
goto done;
kobject_uevent(&up->kobj, KOBJ_REMOVE);
kobject_del(&up->kobj);
kobject_put(&up->kobj);
if (up->user_ns == &init_user_ns) {
kobject_uevent(&up->kobj, KOBJ_REMOVE);
kobject_del(&up->kobj);
kobject_put(&up->kobj);
}
sched_destroy_user(up);
key_put(up->uid_keyring);
@@ -334,8 +335,7 @@ static void free_user(struct user_struct *up, unsigned long flags)
atomic_inc(&up->__count);
spin_unlock_irqrestore(&uidhash_lock, flags);
put_user_ns(up->user_ns);
INIT_WORK(&up->work, remove_user_sysfs_dir);
INIT_WORK(&up->work, cleanup_user_struct);
schedule_work(&up->work);
}
@@ -357,12 +357,29 @@ static void free_user(struct user_struct *up, unsigned long flags)
sched_destroy_user(up);
key_put(up->uid_keyring);
key_put(up->session_keyring);
put_user_ns(up->user_ns);
kmem_cache_free(uid_cachep, up);
}
#endif
#if defined(CONFIG_RT_GROUP_SCHED) && defined(CONFIG_USER_SCHED)
/*
* We need to check if a setuid can take place. This function should be called
* before successfully completing the setuid.
*/
int task_can_switch_user(struct user_struct *up, struct task_struct *tsk)
{
return sched_rt_can_attach(up->tg, tsk);
}
#else
int task_can_switch_user(struct user_struct *up, struct task_struct *tsk)
{
return 1;
}
#endif
/*
* Locate the user_struct for the passed UID. If found, take a ref on it. The
* caller must undo that ref with free_uid().