GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

userns: Free user namespaces in process context

Browse source 
Add the necessary boiler plate to move freeing of user namespaces into
work queue and thus into process context where things can sleep.

This is a necessary precursor to per user namespace sysctls.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2016-07-30 13:53:37 -05:00
parent 13bcc6a285
commit b032132c3c
2 changed files with 14 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/linux/user_namespace.h
View file

@ -39,6 +39,7 @@ struct user_namespace {
struct key *persistent_keyring_register;
struct rw_semaphore persistent_keyring_register_sem;
#endif
struct work_struct work;
};
extern struct user_namespace init_user_ns;
@ -54,12 +55,12 @@ static inline struct user_namespace *get_user_ns(struct user_namespace *ns)
extern int create_user_ns(struct cred *new);
extern int unshare_userns(unsigned long unshare_flags, struct cred **new_cred);
extern void free_user_ns(struct user_namespace *ns);
extern void __put_user_ns(struct user_namespace *ns);
static inline void put_user_ns(struct user_namespace *ns)
{
if (ns && atomic_dec_and_test(&ns->count))
free_user_ns(ns);
__put_user_ns(ns);
}
struct seq_operations;