diff options
Diffstat (limited to 'include/linux/nsproxy.h')
| -rw-r--r-- | include/linux/nsproxy.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h index 074f395b9ad2..cdb171efc7cb 100644 --- a/include/linux/nsproxy.h +++ b/include/linux/nsproxy.h @@ -42,6 +42,30 @@ struct nsproxy { extern struct nsproxy init_nsproxy; /* + * A structure to encompass all bits needed to install + * a partial or complete new set of namespaces. + * + * If a new user namespace is requested cred will + * point to a modifiable set of credentials. If a pointer + * to a modifiable set is needed nsset_cred() must be + * used and tested. + */ +struct nsset { + unsigned flags; + struct nsproxy *nsproxy; + struct fs_struct *fs; + const struct cred *cred; +}; + +static inline struct cred *nsset_cred(struct nsset *set) +{ + if (set->flags & CLONE_NEWUSER) + return (struct cred *)set->cred; + + return NULL; +} + +/* * the namespaces access rules are: * * 1. only current task is allowed to change tsk->nsproxy pointer or |