[libvirt] [PATCH 1/1] security_util: verify xattrs only if ref is present

[Nikolay Shirokovskiy]

After 7cfb7aab573 commit starting a domain pullutes logs with
warnings like [1]. The reason is resource files do not
have timestamp before starting a domain and after destroying
domain the timestamp is cleared. Let's check the timestamp
only if attribute with refcounter is found.

[1] warning : virSecurityValidateTimestamp:198 : Invalid XATTR timestamp detected on \
    /some/path secdriver=dac

Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>
---
 src/security/security_util.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/src/security/security_util.c b/src/security/security_util.c
index 31f41cedfd..f33fe9dd7b 100644
--- a/src/security/security_util.c
+++ b/src/security/security_util.c
@@ -269,13 +269,9 @@ virSecurityGetRememberedLabel(const char *name,
     VIR_AUTOFREE(char *) attr_name = NULL;
     VIR_AUTOFREE(char *) value = NULL;
     unsigned int refcount = 0;
-    int rc;
 
     *label = NULL;
 
-    if ((rc = virSecurityValidateTimestamp(name, path)) < 0)
-        return rc;
-
     if (!(ref_name = virSecurityGetRefCountAttrName(name)))
         return -1;
 
@@ -288,6 +284,14 @@ virSecurityGetRememberedLabel(const char *name,
                              ref_name,
                              path);
         return -1;
+    } else {
+        int rc;
+
+        if ((rc = virSecurityValidateTimestamp(name, path)) < 0)
+            return rc;
+
+        if (rc == 1)
+            return -2;
     }
 
     if (virStrToLong_ui(value, NULL, 10, &refcount) < 0) {
@@ -357,10 +361,6 @@ virSecuritySetRememberedLabel(const char *name,
     VIR_AUTOFREE(char *) attr_name = NULL;
     VIR_AUTOFREE(char *) value = NULL;
     unsigned int refcount = 0;
-    int rc;
-
-    if ((rc = virSecurityValidateTimestamp(name, path)) < 0)
-        return rc;
 
     if (!(ref_name = virSecurityGetRefCountAttrName(name)))
         return -1;
@@ -375,6 +375,14 @@ virSecuritySetRememberedLabel(const char *name,
                                  path);
             return -1;
         }
+    } else {
+        int rc;
+
+        if ((rc = virSecurityValidateTimestamp(name, path)) < 0)
+            return rc;
+
+        if (rc == 1)
+            VIR_FREE(value);
     }
 
     if (value &&
-- 
2.23.0