diff options
| author | Tyler Hicks <tyhicks@canonical.com> | 2016-06-02 23:43:21 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-15 08:27:50 +0200 |
| commit | ad7c1399b7d0c6788b8f5fdb5c274110f3ce6017 (patch) | |
| tree | fadbfecaec0312180f9f09dae1f48d02d174f36e /include | |
| parent | 5afbd223e60a130f66bddf7598165ebe2b51f8db (diff) | |
kernel: Add noaudit variant of ns_capable()
commit 98f368e9e2630a3ce3e80fb10fb2e02038cf9578 upstream.
When checking the current cred for a capability in a specific user
namespace, it isn't always desirable to have the LSMs audit the check.
This patch adds a noaudit variant of ns_capable() for when those
situations arise.
The common logic between ns_capable() and the new ns_capable_noaudit()
is moved into a single, shared function to keep duplicated code to a
minimum and ease maintainability.
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/capability.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h index af9f0b9e80e6..5f8249d378a2 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -214,6 +214,7 @@ extern bool has_ns_capability_noaudit(struct task_struct *t, struct user_namespace *ns, int cap); extern bool capable(int cap); extern bool ns_capable(struct user_namespace *ns, int cap); +extern bool ns_capable_noaudit(struct user_namespace *ns, int cap); #else static inline bool has_capability(struct task_struct *t, int cap) { @@ -241,6 +242,10 @@ static inline bool ns_capable(struct user_namespace *ns, int cap) { return true; } +static inline bool ns_capable_noaudit(struct user_namespace *ns, int cap) +{ + return true; +} #endif /* CONFIG_MULTIUSER */ extern bool capable_wrt_inode_uidgid(const struct inode *inode, int cap); extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap); |