Commit 9c3a66f5c4 for qemu.org

commit 9c3a66f5c40ddf2d45b449459162651cb0126a33
Author: Markus Armbruster <armbru@redhat.com>
Date:   Fri Nov 21 13:14:32 2025 +0100

    blkdebug: Use error_setg_file_open() for a better error message

    The error message changes from

        Could not read blkdebug config file: REASON

    to

        Could not open 'FNAME': REASON

    I think the exact file name is more useful to know than the file's
    purpose.

    Signed-off-by: Markus Armbruster <armbru@redhat.com>
    Message-ID: <20251121121438.1249498-10-armbru@redhat.com>

diff --git a/block/blkdebug.c b/block/blkdebug.c
index c54aee0c84..8a4a8cb85e 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -288,7 +288,7 @@ static int read_config(BDRVBlkdebugState *s, const char *filename,
     if (filename) {
         f = fopen(filename, "r");
         if (f == NULL) {
-            error_setg_errno(errp, errno, "Could not read blkdebug config file");
+            error_setg_file_open(errp, errno, filename);
             return -errno;
         }