1 files changed, 32 insertions, 9 deletions

diff --git a/include/linux/security.h b/include/linux/security.h
index b92b5e453f64..1f2ab6353c00 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -48,7 +48,8 @@ struct audit_krule;
  * These functions are in security/capability.c and are used
  * as the default capabilities functions
  */
-extern int cap_capable(struct task_struct *tsk, int cap, int audit);
+extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
+                       int cap, int audit);
 extern int cap_settime(struct timespec *ts, struct timezone *tz);
 extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
 extern int cap_ptrace_traceme(struct task_struct *parent);
@@ -1251,9 +1252,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  *      @permitted contains the permitted capability set.
  *      Return 0 and update @new if permission is granted.
  * @capable:
- *      Check whether the @tsk process has the @cap capability.
+ *      Check whether the @tsk process has the @cap capability in the indicated
+ *      credentials.
  *      @tsk contains the task_struct for the process.
+ *      @cred contains the credentials to use.
  *      @cap contains the capability <include/linux/capability.h>.
+ *      @audit: Whether to write an audit message or not
  *      Return 0 if the capability is granted for @tsk.
  * @acct:
  *      Check permission before enabling or disabling process accounting.  If
@@ -1346,7 +1350,8 @@ struct security_operations {
                        const kernel_cap_t *effective,
                        const kernel_cap_t *inheritable,
                        const kernel_cap_t *permitted);
-        int (*capable) (struct task_struct *tsk, int cap, int audit);
+        int (*capable) (struct task_struct *tsk, const struct cred *cred,
+                        int cap, int audit);
         int (*acct) (struct file *file);
         int (*sysctl) (struct ctl_table *table, int op);
         int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
@@ -1628,8 +1633,9 @@ int security_capset(struct cred *new, const struct cred *old,
                     const kernel_cap_t *effective,
                     const kernel_cap_t *inheritable,
                     const kernel_cap_t *permitted);
-int security_capable(struct task_struct *tsk, int cap);
-int security_capable_noaudit(struct task_struct *tsk, int cap);
+int security_capable(int cap);
+int security_real_capable(struct task_struct *tsk, int cap);
+int security_real_capable_noaudit(struct task_struct *tsk, int cap);
 int security_acct(struct file *file);
 int security_sysctl(struct ctl_table *table, int op);
 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
@@ -1826,14 +1832,31 @@ static inline int security_capset(struct cred *new,
         return cap_capset(new, old, effective, inheritable, permitted);
 }
 
-static inline int security_capable(struct task_struct *tsk, int cap)
+static inline int security_capable(int cap)
 {
-        return cap_capable(tsk, cap, SECURITY_CAP_AUDIT);
+        return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
 }
 
-static inline int security_capable_noaudit(struct task_struct *tsk, int cap)
+static inline int security_real_capable(struct task_struct *tsk, int cap)
 {
-        return cap_capable(tsk, cap, SECURITY_CAP_NOAUDIT);
+        int ret;
+
+        rcu_read_lock();
+        ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
+        rcu_read_unlock();
+        return ret;
+}
+
+static inline
+int security_real_capable_noaudit(struct task_struct *tsk, int cap)
+{
+        int ret;
+
+        rcu_read_lock();
+        ret = cap_capable(tsk, __task_cred(tsk), cap,
+                               SECURITY_CAP_NOAUDIT);
+        rcu_read_unlock();
+        return ret;
 }
 
 static inline int security_acct(struct file *file)