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Fix keyslots size overflow when device too small.

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It properly failed but debug message was confusing.
Now it fails later properly with "device too small"
error message.
This commit is contained in:
Ondrej Kozina
2021-02-23 11:28:03 +01:00
parent 6a8bade7e6
commit 6e6e9f169e
1 changed files with 2 additions and 1 deletions
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3
lib/luks2/luks2_json_format.c
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@@ -247,7 +247,8 @@ int LUKS2_generate_hdr(
/* Decrease keyslots_size due to metadata device being too small */
if (!device_size(crypt_metadata_device(cd), &mdev_size) &&
((keyslots_size + get_min_offset(hdr)) > mdev_size) &&
device_fallocate(crypt_metadata_device(cd), keyslots_size + get_min_offset(hdr)))
device_fallocate(crypt_metadata_device(cd), keyslots_size + get_min_offset(hdr)) &&
(get_min_offset(hdr) <= mdev_size))
keyslots_size = mdev_size - get_min_offset(hdr);
}