security: add cred argument to security_capable()

Expand security_capable() to include cred, so that it can be usable in a
wider range of call sites.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: James Morris <jmorris@namei.org>

3 files changed, 6 insertions, 7 deletions

diff --git a/include/linux/security.h b/include/linux/security.h
index c642bb8b8f5a..b2b7f9749f5e 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1662,7 +1662,7 @@ 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(int cap);
+int security_capable(const struct cred *cred, 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_sysctl(struct ctl_table *table, int op);
@@ -1856,9 +1856,9 @@ static inline int security_capset(struct cred *new,
         return cap_capset(new, old, effective, inheritable, permitted);
 }
 
-static inline int security_capable(int cap)
+static inline int security_capable(const struct cred *cred, int cap)
 {
-        return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
+        return cap_capable(current, cred, cap, SECURITY_CAP_AUDIT);
 }
 
 static inline int security_real_capable(struct task_struct *tsk, int cap)
diff --git a/kernel/capability.c b/kernel/capability.c
index 2f05303715a5..9e9385f132c8 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -306,7 +306,7 @@ int capable(int cap)
                 BUG();
         }
 
-        if (security_capable(cap) == 0) {
+        if (security_capable(current_cred(), cap) == 0) {
                 current->flags |= PF_SUPERPRIV;
                 return 1;
         }
diff --git a/security/security.c b/security/security.c
index 739e40362f44..7b7308ace8c5 100644
--- a/security/security.c
+++ b/security/security.c
@@ -154,10 +154,9 @@ int security_capset(struct cred *new, const struct cred *old,
                                     effective, inheritable, permitted);
 }
 
-int security_capable(int cap)
+int security_capable(const struct cred *cred, int cap)
 {
-        return security_ops->capable(current, current_cred(), cap,
-                                     SECURITY_CAP_AUDIT);
+        return security_ops->capable(current, cred, cap, SECURITY_CAP_AUDIT);
 }
 
 int security_real_capable(struct task_struct *tsk, int cap)