storage: Correct the 'mode' check

Commit id '7c2d65dde2' changed the default value of mode to be -1 if not
supplied in the XML, which should cause creation of the volume using the
default mode of VIR_STORAGE_DEFAULT_VOL_PERM_MODE; however, the check
made was whether mode was '0' or not to use default or provided value.

This patch fixes the issue to check if the 'mode' was provided in the XML
and use that value.

(cherry picked from commit 691dd388aee99f8b06177540303b690586d5f5b3)

diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c
index db4973960af6922c05f1b26e072dd996b3435d85..f5ed843cba78de358de2b321795bfc35317087c4 100644 (file)
--- a/src/storage/storage_backend.c
+++ b/src/storage/storage_backend.c
@@ -486,6 +486,7 @@ virStorageBackendCreateRaw(virConnectPtr conn ATTRIBUTE_UNUSED,
     int fd = -1;
     int operation_flags;
     bool reflink_copy = false;
+    mode_t open_mode = VIR_STORAGE_DEFAULT_VOL_PERM_MODE;
 
     virCheckFlags(VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA |
                   VIR_STORAGE_VOL_CREATE_REFLINK,
@@ -518,11 +519,12 @@ virStorageBackendCreateRaw(virConnectPtr conn ATTRIBUTE_UNUSED,
     if (pool->def->type == VIR_STORAGE_POOL_NETFS)
         operation_flags |= VIR_FILE_OPEN_FORK;
 
+    if (vol->target.perms->mode != (mode_t) -1)
+        open_mode = vol->target.perms->mode;
+
     if ((fd = virFileOpenAs(vol->target.path,
                             O_RDWR | O_CREAT | O_EXCL,
-                            (vol->target.perms->mode ?
-                             VIR_STORAGE_DEFAULT_VOL_PERM_MODE :
-                             vol->target.perms->mode),
+                            open_mode,
                             vol->target.perms->uid,
                             vol->target.perms->gid,
                             operation_flags)) < 0) {