libblkid: support LIBBLKID_DEBUG= env.

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/shlibs/blkid/src/cache.c b/shlibs/blkid/src/cache.c
index 6f53dc99aa57d7a93f530268b2e4cd42f5c935d9..feec6ddfceb8b66dedfe542f84a94a630a7e9dfe 100644 (file)
--- a/shlibs/blkid/src/cache.c
+++ b/shlibs/blkid/src/cache.c
@@ -79,8 +79,10 @@ void blkid_init_debug(int mask)
 
        if (!mask)
        {
-               char *dstr = getenv("BLKID_DEBUG");
+               char *dstr = getenv("LIBBLKID_DEBUG");
 
+               if (!dstr)
+                       dstr = getenv("BLKID_DEBUG");   /* for backward compatibility */
                if (dstr)
                        blkid_debug_mask = strtoul(dstr, 0, 0);
        } else