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Move cipher parsing outside LUKS2 header generator function.

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Let's make LUKS2_generate_hdr as clean as possible. Cipher
specification string can be constructed in upper layers.

This will make future LUKS2_generate_hdr extension easier.
This commit is contained in:
Ondrej Kozina
2023-05-17 12:44:08 +02:00
parent fd91de82ad
commit 6a8fa14007
3 changed files with 14 additions and 14 deletions
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3
lib/luks2/luks2.h
View File

@@ -378,8 +378,7 @@ int LUKS2_generate_hdr(
struct crypt_device *cd,
struct luks2_hdr *hdr,
const struct volume_key *vk,
const char *cipherName,
const char *cipherMode,
const char *cipher_spec,
const char *integrity,
const char *uuid,
unsigned int sector_size,

13
lib/luks2/luks2_json_format.c
View File

@@ -204,8 +204,7 @@ int LUKS2_generate_hdr(
struct crypt_device *cd,
struct luks2_hdr *hdr,
const struct volume_key *vk,
const char *cipherName,
const char *cipherMode,
const char *cipher_spec,
const char *integrity,
const char *uuid,
unsigned int sector_size, /* in bytes */
@@ -214,7 +213,6 @@ int LUKS2_generate_hdr(
uint64_t keyslots_size_bytes)
{
struct json_object *jobj_segment, *jobj_keyslots, *jobj_segments, *jobj_config;
char cipher[128];
uuid_t partitionUuid;
int r, digest;
@@ -245,13 +243,6 @@ int LUKS2_generate_hdr(
uuid_unparse(partitionUuid, hdr->uuid);
if (*cipherMode != '\0')
r = snprintf(cipher, sizeof(cipher), "%s-%s", cipherName, cipherMode);
else
r = snprintf(cipher, sizeof(cipher), "%s", cipherName);
if (r < 0 || (size_t)r >= sizeof(cipher))
return -EINVAL;
hdr->jobj = json_object_new_object();
if (!hdr->jobj) {
r = -ENOMEM;
@@ -293,7 +284,7 @@ int LUKS2_generate_hdr(
goto err;
}
jobj_segment = json_segment_create_crypt(data_offset, 0, NULL, cipher, integrity, sector_size, 0);
jobj_segment = json_segment_create_crypt(data_offset, 0, NULL, cipher_spec, integrity, sector_size, 0);
if (!jobj_segment) {
r = -EINVAL;
goto err;