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qemu-img: abort when full_backing_filename not present

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...But only if we have the backing_filename. It means something Scary
happened and we can't really be quite exactly sure if we can trust the
backing_filename.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1450122916-4706-5-git-send-email-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
John Snow 2015-12-14 14:55:15 -05:00 committed by Max Reitz
parent 5c9d9ca597
commit 92d617abc5
1 changed files with 4 additions and 1 deletions
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qemu-img.c
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@ -2040,7 +2040,10 @@ static ImageInfoList *collect_image_info_list(const char *filename,
if (info->has_full_backing_filename) {
filename = info->full_backing_filename;
} else if (info->has_backing_filename) {
filename = info->backing_filename;
error_report("Could not determine absolute backing filename,"
" but backing filename '%s' present",
info->backing_filename);
goto err;
}
if (info->has_backing_filename_format) {
fmt = info->backing_filename_format;