util: virstoragefile: Move virStorageIs[File|Relative] to storage_source

There are no other files using it. Move it and make the functions
static.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>

src/util/virstoragefile.c

@@ -37,40 +37,6 @@
 VIR_LOG_INIT("util.storagefile");
 
 
-bool
-virStorageIsFile(const char *backing)
-{
-    char *colon;
-    char *slash;
-
-    if (!backing)
-        return false;
-
-    colon = strchr(backing, ':');
-    slash = strchr(backing, '/');
-
-    /* Reject anything that looks like a protocol (such as nbd: or
-     * rbd:); if someone really does want a relative file name that
-     * includes ':', they can always prefix './'.  */
-    if (colon && (!slash || colon < slash))
-        return false;
-    return true;
-}
-
-
-bool
-virStorageIsRelative(const char *backing)
-{
-    if (backing[0] == '/')
-        return false;
-
-    if (!virStorageIsFile(backing))
-        return false;
-
-    return true;
-}
-
-
 #ifdef WITH_UDEV
 /* virStorageFileGetSCSIKey
  * @path: Path to the SCSI device

src/util/virstoragefile.h

@@ -33,9 +33,6 @@ int virStorageFileParseBackingStoreStr(const char *str,
                                        unsigned int *chainIndex)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
 
-bool virStorageIsFile(const char *path);
-bool virStorageIsRelative(const char *backing);
-
 int virStorageFileGetSCSIKey(const char *path,
                              char **key,
                              bool ignoreError);