From 3ea3e3078f7f8d3b2dcb2371e48aecc204d71491 Mon Sep 17 00:00:00 2001 From: Michael Olbrich Date: Mon, 17 Dec 2018 14:58:54 +0100 Subject: image-ext2: avoid existing filesystem check on block devices mke2fs checks if the target contains a filesystem. Make sure none is found on block devices by overwriting the first 2048 bytes of the device. Signed-off-by: Michael Olbrich --- image-ext2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/image-ext2.c b/image-ext2.c index 272198d..8ce76be 100644 --- a/image-ext2.c +++ b/image-ext2.c @@ -73,6 +73,9 @@ static int ext2_generate_mke2fs(struct image *image) if (label && label[0] == '\0') label = NULL; + if (is_block_device(imageoutfile(image))) + pad_file(image, NULL, 2048, 0x0, MODE_OVERWRITE); + return systemp(image, "%s%s -t %s%s -E 'root_owner=%s,%s'%s -d '%s' %s %s%s '%s' %lld", ext->conf_env, get_opt("mke2fs"), image->handler->type, ext->usage_type_args, root_owner, options, ext->size_features, -- cgit v1.2.3