security: Fix setting of PF_SUPERPRIV by __capable()
[linux-2.6.git] / security / selinux / hooks.c
index 3ae9bec..03fc6a8 100644 (file)
@@ -1738,24 +1738,34 @@ static inline u32 file_to_av(struct file *file)
 
 /* Hook functions begin here. */
 
-static int selinux_ptrace(struct task_struct *parent,
-                         struct task_struct *child,
-                         unsigned int mode)
+static int selinux_ptrace_may_access(struct task_struct *child,
+                                    unsigned int mode)
 {
        int rc;
 
-       rc = secondary_ops->ptrace(parent, child, mode);
+       rc = secondary_ops->ptrace_may_access(child, mode);
        if (rc)
                return rc;
 
        if (mode == PTRACE_MODE_READ) {
-               struct task_security_struct *tsec = parent->security;
+               struct task_security_struct *tsec = current->security;
                struct task_security_struct *csec = child->security;
                return avc_has_perm(tsec->sid, csec->sid,
                                    SECCLASS_FILE, FILE__READ, NULL);
        }
 
-       return task_has_perm(parent, child, PROCESS__PTRACE);
+       return task_has_perm(current, child, PROCESS__PTRACE);
+}
+
+static int selinux_ptrace_traceme(struct task_struct *parent)
+{
+       int rc;
+
+       rc = secondary_ops->ptrace_traceme(parent);
+       if (rc)
+               return rc;
+
+       return task_has_perm(parent, current, PROCESS__PTRACE);
 }
 
 static int selinux_capget(struct task_struct *target, kernel_cap_t *effective,
@@ -5346,7 +5356,8 @@ static int selinux_key_getsecurity(struct key *key, char **_buffer)
 static struct security_operations selinux_ops = {
        .name =                         "selinux",
 
-       .ptrace =                       selinux_ptrace,
+       .ptrace_may_access =            selinux_ptrace_may_access,
+       .ptrace_traceme =               selinux_ptrace_traceme,
        .capget =                       selinux_capget,
        .capset_check =                 selinux_capset_check,
        .capset_set =                   selinux_capset_set,