This patch switches code to SPDX one-line license identifiers according to
https://spdx.dev/learn/handling-license-info/
and replacing long license text headers.
I used C++ format on the first line in style
// SPDX-License-Identifier: <id>
except exported libcryptsetup.h, when only C comments are used.
The only additional changes are:
- switch backend utf8.c from LGPL2+ to LGPL2.1+ (as in systemd)
- add some additional formatting lines.
The read in kernel crypto backend is part of user crypto API
encryption call, we have to trust it here.
JSON fix is just one place where return code was not checked
for this particular function.
For now, the hash was set to sha256 (except for converted LUKS1 header).
This patch adds the same logic as in LUKS1 - hash aglorithms is
loaded from PBKDF setting.
Fixes#396.
The JSON structures should not be printed by default to debug log.
This flag introduces new debug level that prints JSON structures
and keeps default debug output separate.
