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From be973ab9f6585be762ea0888c81b011222eabb13 Mon Sep 17 00:00:00 2001
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From: Jan Synacek <jsynacek@redhat.com>
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Date: Thu, 3 May 2018 11:21:27 +0200
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Subject: [PATCH] cryptsetup: support LUKS2 on-disk format
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Allow cryptsetup utility to activate LUKS2 devices (with appropriate
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libcryptsetup)
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The change itself doesn't enforce new libcryptsetup 2.x and is backward
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compatible with versions 1.x
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(cherry-picked from commit b3b4ebab02395933cde554b5a5d5c363dae3920d)
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Resolves: #1573838
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---
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src/cryptsetup/cryptsetup.c | 20 ++++++++++++++------
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1 file changed, 14 insertions(+), 6 deletions(-)
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diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
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index 69a015614..528c36c48 100644
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--- a/src/cryptsetup/cryptsetup.c
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+++ b/src/cryptsetup/cryptsetup.c
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@@ -36,7 +36,15 @@
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#include "libudev.h"
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#include "udev-util.h"
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-static const char *arg_type = NULL; /* CRYPT_LUKS1, CRYPT_TCRYPT or CRYPT_PLAIN */
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+/* libcryptsetup define for any LUKS version, compatible with libcryptsetup 1.x */
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+#ifndef CRYPT_LUKS
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+#define CRYPT_LUKS NULL
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+#endif
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+
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+/* internal helper */
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+#define ANY_LUKS "LUKS"
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+
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+static const char *arg_type = NULL; /* ANY_LUKS, CRYPT_LUKS1, CRYPT_LUKS2, CRYPT_TCRYPT or CRYPT_PLAIN */
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static char *arg_cipher = NULL;
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static unsigned arg_key_size = 0;
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static int arg_key_slot = CRYPT_ANY_SLOT;
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@@ -98,7 +106,7 @@ static int parse_one_option(const char *option) {
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} else if (startswith(option, "key-slot=")) {
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- arg_type = CRYPT_LUKS1;
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+ arg_type = ANY_LUKS;
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if (safe_atoi(option+9, &arg_key_slot) < 0) {
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log_error("key-slot= parse failure, ignoring.");
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return 0;
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@@ -138,7 +146,7 @@ static int parse_one_option(const char *option) {
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arg_hash = t;
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} else if (startswith(option, "header=")) {
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- arg_type = CRYPT_LUKS1;
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+ arg_type = ANY_LUKS;
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if (!path_is_absolute(option+7)) {
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log_error("Header path '%s' is not absolute, refusing.", option+7);
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@@ -168,7 +176,7 @@ static int parse_one_option(const char *option) {
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else if (STR_IN_SET(option, "allow-discards", "discard"))
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arg_discards = true;
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else if (streq(option, "luks"))
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- arg_type = CRYPT_LUKS1;
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+ arg_type = ANY_LUKS;
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else if (streq(option, "tcrypt"))
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arg_type = CRYPT_TCRYPT;
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else if (streq(option, "tcrypt-hidden")) {
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@@ -430,8 +438,8 @@ static int attach_luks_or_plain(struct crypt_device *cd,
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assert(name);
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assert(key_file || passwords);
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- if (!arg_type || streq(arg_type, CRYPT_LUKS1)) {
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- r = crypt_load(cd, CRYPT_LUKS1, NULL);
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+ if (!arg_type || STR_IN_SET(arg_type, ANY_LUKS, CRYPT_LUKS1)) {
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+ r = crypt_load(cd, CRYPT_LUKS, NULL);
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if (r < 0) {
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log_error("crypt_load() failed on device %s.\n", crypt_get_device_name(cd));
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return r;
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