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Diffstat (limited to 'kernel/capability.c')
-rw-r--r--kernel/capability.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/kernel/capability.c b/kernel/capability.c
index 1e1c0236f55b..7718d7dcadc7 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -299,7 +299,7 @@ bool has_ns_capability(struct task_struct *t,
int ret;
rcu_read_lock();
- ret = security_capable(__task_cred(t), ns, cap);
+ ret = security_capable(__task_cred(t), ns, cap, CAP_OPT_NONE);
rcu_read_unlock();
return (ret == 0);
@@ -340,7 +340,7 @@ bool has_ns_capability_noaudit(struct task_struct *t,
int ret;
rcu_read_lock();
- ret = security_capable_noaudit(__task_cred(t), ns, cap);
+ ret = security_capable(__task_cred(t), ns, cap, CAP_OPT_NOAUDIT);
rcu_read_unlock();
return (ret == 0);
@@ -363,7 +363,9 @@ bool has_capability_noaudit(struct task_struct *t, int cap)
return has_ns_capability_noaudit(t, &init_user_ns, cap);
}
-static bool ns_capable_common(struct user_namespace *ns, int cap, bool audit)
+static bool ns_capable_common(struct user_namespace *ns,
+ int cap,
+ unsigned int opts)
{
int capable;
@@ -372,8 +374,7 @@ static bool ns_capable_common(struct user_namespace *ns, int cap, bool audit)
BUG();
}
- capable = audit ? security_capable(current_cred(), ns, cap) :
- security_capable_noaudit(current_cred(), ns, cap);
+ capable = security_capable(current_cred(), ns, cap, opts);
if (capable == 0) {
current->flags |= PF_SUPERPRIV;
return true;
@@ -394,7 +395,7 @@ static bool ns_capable_common(struct user_namespace *ns, int cap, bool audit)
*/
bool ns_capable(struct user_namespace *ns, int cap)
{
- return ns_capable_common(ns, cap, true);
+ return ns_capable_common(ns, cap, CAP_OPT_NONE);
}
EXPORT_SYMBOL(ns_capable);
@@ -412,7 +413,7 @@ EXPORT_SYMBOL(ns_capable);
*/
bool ns_capable_noaudit(struct user_namespace *ns, int cap)
{
- return ns_capable_common(ns, cap, false);
+ return ns_capable_common(ns, cap, CAP_OPT_NOAUDIT);
}
EXPORT_SYMBOL(ns_capable_noaudit);
@@ -448,10 +449,11 @@ EXPORT_SYMBOL(capable);
bool file_ns_capable(const struct file *file, struct user_namespace *ns,
int cap)
{
+
if (WARN_ON_ONCE(!cap_valid(cap)))
return false;
- if (security_capable(file->f_cred, ns, cap) == 0)
+ if (security_capable(file->f_cred, ns, cap, CAP_OPT_NONE) == 0)
return true;
return false;
@@ -500,10 +502,12 @@ bool ptracer_capable(struct task_struct *tsk, struct user_namespace *ns)
{
int ret = 0; /* An absent tracer adds no restrictions */
const struct cred *cred;
+
rcu_read_lock();
cred = rcu_dereference(tsk->ptracer_cred);
if (cred)
- ret = security_capable_noaudit(cred, ns, CAP_SYS_PTRACE);
+ ret = security_capable(cred, ns, CAP_SYS_PTRACE,
+ CAP_OPT_NOAUDIT);
rcu_read_unlock();
return (ret == 0);
}