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Refactor reencrypt_length() function.

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This commit is contained in:
Ondrej Kozina
2022-05-11 11:39:04 +02:00
parent 828ddad7c2
commit cfb54be9a3
1 changed files with 7 additions and 8 deletions
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15
lib/luks2/luks2_reencrypt.c
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@@ -842,8 +842,7 @@ static int reencrypt_offset(struct luks2_hdr *hdr,
}
static uint64_t reencrypt_length(struct crypt_device *cd,
struct luks2_hdr *hdr,
struct luks2_reencrypt *rh,
struct reenc_protection *rp,
uint64_t keyslot_area_length,
uint64_t length_max,
size_t alignment)
@@ -851,12 +850,12 @@ static uint64_t reencrypt_length(struct crypt_device *cd,
unsigned long dummy, optimal_alignment;
uint64_t length, soft_mem_limit;
if (rh->rp.type == REENC_PROTECTION_NONE)
if (rp->type == REENC_PROTECTION_NONE)
length = length_max ?: LUKS2_DEFAULT_NONE_REENCRYPTION_LENGTH;
else if (rh->rp.type == REENC_PROTECTION_CHECKSUM)
length = (keyslot_area_length / rh->rp.p.csum.hash_size) * rh->rp.p.csum.block_size;
else if (rh->rp.type == REENC_PROTECTION_DATASHIFT)
return rh->rp.p.ds.data_shift;
else if (rp->type == REENC_PROTECTION_CHECKSUM)
length = (keyslot_area_length / rp->p.csum.hash_size) * rp->p.csum.block_size;
else if (rp->type == REENC_PROTECTION_DATASHIFT)
return rp->p.ds.data_shift;
else
length = keyslot_area_length;
@@ -942,7 +941,7 @@ static int reencrypt_context_init(struct crypt_device *cd,
} else
rh->fixed_length = false;
rh->length = reencrypt_length(cd, hdr, rh, area_length, max_hotzone_size << SECTOR_SHIFT, alignment);
rh->length = reencrypt_length(cd, &rh->rp, area_length, max_hotzone_size << SECTOR_SHIFT, alignment);
if (!rh->length) {
log_dbg(cd, "Invalid reencryption length.");
return -EINVAL;