diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/capability.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/capability.c b/kernel/capability.c index 0a3d2c863a1c..bf0c734d0c12 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -291,6 +291,60 @@ error: } /** + * has_capability - Does a task have a capability in init_user_ns + * @t: The task in question + * @cap: The capability to be tested for + * + * Return true if the specified task has the given superior capability + * currently in effect to the initial user namespace, false if not. + * + * Note that this does not set PF_SUPERPRIV on the task. + */ +bool has_capability(struct task_struct *t, int cap) +{ + int ret = security_real_capable(t, &init_user_ns, cap); + + return (ret == 0); +} + +/** + * has_capability - Does a task have a capability in a specific user ns + * @t: The task in question + * @ns: target user namespace + * @cap: The capability to be tested for + * + * Return true if the specified task has the given superior capability + * currently in effect to the specified user namespace, false if not. + * + * Note that this does not set PF_SUPERPRIV on the task. + */ +bool has_ns_capability(struct task_struct *t, + struct user_namespace *ns, int cap) +{ + int ret = security_real_capable(t, ns, cap); + + return (ret == 0); +} + +/** + * has_capability_noaudit - Does a task have a capability (unaudited) + * @t: The task in question + * @cap: The capability to be tested for + * + * Return true if the specified task has the given superior capability + * currently in effect to init_user_ns, false if not. Don't write an + * audit message for the check. + * + * Note that this does not set PF_SUPERPRIV on the task. + */ +bool has_capability_noaudit(struct task_struct *t, int cap) +{ + int ret = security_real_capable_noaudit(t, &init_user_ns, cap); + + return (ret == 0); +} + +/** * capable - Determine if the current task has a superior capability in effect * @cap: The capability to be tested for * |
