import cryptsetup-2.3.7-5.el8

This commit is contained in:
CentOS Sources 2023-05-16 06:15:20 +00:00 committed by root
parent cd2c9eda52
commit 6b1d7a18a0
8 changed files with 884 additions and 2 deletions

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@ -0,0 +1,206 @@
From 6bc1378ddb5bbcc6ba592177c996576b0b3505f9 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Fri, 22 Oct 2021 13:06:48 +0200
Subject: [PATCH] Remove LUKS2 encryption data size restriction.
LUKS2 encryption with data shift required remaining
data size (size remaining after substracting --reduce-data-size value)
to be at least --reduce-data-size. This was wrong. Remaining
data size restriction should be correctly at least single sector
(whatever sector size is selected or auto-detected).
---
lib/luks2/luks2_reencrypt.c | 31 ++++++++++++-----------
tests/api-test-2.c | 6 ++---
tests/luks2-reencryption-test | 46 +++++++++++++++++++++++++++++------
3 files changed, 57 insertions(+), 26 deletions(-)
diff --git a/lib/luks2/luks2_reencrypt.c b/lib/luks2/luks2_reencrypt.c
index b45327ad..d0e0dc40 100644
--- a/lib/luks2/luks2_reencrypt.c
+++ b/lib/luks2/luks2_reencrypt.c
@@ -825,7 +825,7 @@ static int reencrypt_offset_backward_moved(struct luks2_hdr *hdr, json_object *j
linear_length += LUKS2_segment_size(hdr, sg, 0);
/* all active linear segments length */
- if (linear_length) {
+ if (linear_length && segs > 1) {
if (linear_length < data_shift)
return -EINVAL;
tmp = linear_length - data_shift;
@@ -1745,7 +1745,8 @@ static int reencrypt_set_encrypt_segments(struct crypt_device *cd, struct luks2_
int r;
uint64_t first_segment_offset, first_segment_length,
second_segment_offset, second_segment_length,
- data_offset = LUKS2_get_data_offset(hdr) << SECTOR_SHIFT;
+ data_offset = LUKS2_get_data_offset(hdr) << SECTOR_SHIFT,
+ data_size = dev_size - data_shift;
json_object *jobj_segment_first = NULL, *jobj_segment_second = NULL, *jobj_segments;
if (dev_size < data_shift)
@@ -1760,9 +1761,14 @@ static int reencrypt_set_encrypt_segments(struct crypt_device *cd, struct luks2_
* [future LUKS2 header (data shift size)][second data segment][gap (data shift size)][first data segment (data shift size)]
*/
first_segment_offset = dev_size;
- first_segment_length = data_shift;
- second_segment_offset = data_shift;
- second_segment_length = dev_size - 2 * data_shift;
+ if (data_size < data_shift) {
+ first_segment_length = data_size;
+ second_segment_length = second_segment_offset = 0;
+ } else {
+ first_segment_length = data_shift;
+ second_segment_offset = data_shift;
+ second_segment_length = data_size - data_shift;
+ }
} else if (data_shift) {
first_segment_offset = data_offset;
first_segment_length = dev_size;
@@ -2163,17 +2169,10 @@ static int reencrypt_move_data(struct crypt_device *cd, int devfd, uint64_t data
log_dbg(cd, "Going to move data from head of data device.");
- buffer_len = data_shift;
- if (!buffer_len)
- return -EINVAL;
-
offset = json_segment_get_offset(LUKS2_get_segment_jobj(hdr, 0), 0);
-
- /* this is nonsense anyway */
- if (buffer_len != json_segment_get_size(LUKS2_get_segment_jobj(hdr, 0), 0)) {
- log_dbg(cd, "buffer_len %" PRIu64", segment size %" PRIu64, buffer_len, json_segment_get_size(LUKS2_get_segment_jobj(hdr, 0), 0));
+ buffer_len = json_segment_get_size(LUKS2_get_segment_jobj(hdr, 0), 0);
+ if (!buffer_len || buffer_len > data_shift)
return -EINVAL;
- }
if (posix_memalign(&buffer, device_alignment(crypt_data_device(cd)), buffer_len))
return -ENOMEM;
@@ -2447,7 +2446,7 @@ static int reencrypt_init(struct crypt_device *cd,
* encryption initialization (or mount)
*/
if (move_first_segment) {
- if (dev_size < 2 * (params->data_shift << SECTOR_SHIFT)) {
+ if (dev_size < (params->data_shift << SECTOR_SHIFT)) {
log_err(cd, _("Device %s is too small."), device_path(crypt_data_device(cd)));
return -EINVAL;
}
@@ -3484,7 +3483,7 @@ int LUKS2_reencrypt_check_device_size(struct crypt_device *cd, struct luks2_hdr
check_size, check_size >> SECTOR_SHIFT, real_size, real_size >> SECTOR_SHIFT,
real_size - data_offset, (real_size - data_offset) >> SECTOR_SHIFT);
- if (real_size < data_offset || (check_size && (real_size - data_offset) < check_size)) {
+ if (real_size < data_offset || (check_size && real_size < check_size)) {
log_err(cd, _("Device %s is too small."), device_path(crypt_data_device(cd)));
return -EINVAL;
}
diff --git a/tests/api-test-2.c b/tests/api-test-2.c
index a01a7a72..05ee8f94 100644
--- a/tests/api-test-2.c
+++ b/tests/api-test-2.c
@@ -4238,7 +4238,7 @@ static void Luks2Reencryption(void)
_cleanup_dmdevices();
OK_(create_dmdevice_over_loop(H_DEVICE, r_header_size));
- OK_(create_dmdevice_over_loop(L_DEVICE_OK, 12*1024*2+1));
+ OK_(create_dmdevice_over_loop(L_DEVICE_OK, 8*1024*2+1));
/* encryption with datashift and moved segment (data shift + 1 sector) */
OK_(crypt_init(&cd, DMDIR H_DEVICE));
@@ -4258,11 +4258,11 @@ static void Luks2Reencryption(void)
_cleanup_dmdevices();
OK_(create_dmdevice_over_loop(H_DEVICE, r_header_size));
- OK_(create_dmdevice_over_loop(L_DEVICE_OK, 12*1024*2));
+ OK_(create_dmdevice_over_loop(L_DEVICE_OK, 2*8200));
OK_(crypt_init(&cd, DMDIR H_DEVICE));
- /* encryption with datashift and moved segment (data shift + data offset > device size) */
+ /* encryption with datashift and moved segment (data shift + data offset <= device size) */
memset(&rparams, 0, sizeof(rparams));
params2.sector_size = 512;
params2.data_device = DMDIR L_DEVICE_OK;
diff --git a/tests/luks2-reencryption-test b/tests/luks2-reencryption-test
index 8efb2707..bf711c15 100755
--- a/tests/luks2-reencryption-test
+++ b/tests/luks2-reencryption-test
@@ -152,14 +152,30 @@ function open_crypt() # $1 pwd, $2 hdr
fi
}
+function wipe_dev_head() # $1 dev, $2 length (in MiBs)
+{
+ dd if=/dev/zero of=$1 bs=1M count=$2 conv=notrunc >/dev/null 2>&1
+}
+
function wipe_dev() # $1 dev
{
if [ -b $1 ] ; then
blkdiscard --zeroout $1 2>/dev/null || dd if=/dev/zero of=$1 bs=1M conv=notrunc >/dev/null 2>&1
+ if [ $# -gt 2 ]; then
+ dd if=/dev/urandom of=$1 bs=1M seek=$2 conv=notrunc >/dev/null 2>&1
+ fi
else
local size=$(stat --printf="%s" $1)
truncate -s 0 $1
- truncate -s $size $1
+ if [ $# -gt 2 ]; then
+ local diff=$((size-$2*1024*1024))
+ echo "size: $size, diff: $diff"
+ truncate -s $diff $1
+ # wipe_dev_head $1 $((diff/(1024*1024)))
+ dd if=/dev/urandom of=$1 bs=1M seek=$2 size=$((diff/(1024*1024))) conv=notrunc >/dev/null 2>&1
+ else
+ truncate -s $size $1
+ fi
fi
}
@@ -214,15 +230,16 @@ function check_hash() # $1 pwd, $2 hash, $3 hdr
$CRYPTSETUP remove $DEV_NAME || fail
}
+function check_hash_dev_head() # $1 dev, $2 len, $3 hash
+{
+ local hash=$(dd if=$1 bs=512 count=$2 2>/dev/null | sha256sum | cut -d' ' -f1)
+ [ $hash != "$3" ] && fail "HASH differs (expected: $3) (result $hash)"
+}
+
function check_hash_head() # $1 pwd, $2 len, $3 hash, $4 hdr
{
open_crypt $1 $4
- if [ -n "$4" ]; then
- echo $1 | $CRYPTSETUP resize $DEV_NAME --size $2 --header $4 || fail
- else
- echo $1 | $CRYPTSETUP resize $DEV_NAME --size $2 || fail
- fi
- check_hash_dev /dev/mapper/$DEV_NAME $3
+ check_hash_dev_head /dev/mapper/$DEV_NAME $2 $3
$CRYPTSETUP remove $DEV_NAME || fail
}
@@ -865,6 +882,21 @@ $CRYPTSETUP status $DEV_NAME >/dev/null 2>&1 || fail
$CRYPTSETUP close $DEV_NAME
echo $PWD1 | $CRYPTSETUP open $DEV --test-passphrase || fail
+# Small device encryption test
+preparebig 65
+# wipe only 1st MiB (final data size after encryption)
+wipe_dev $DEV 1
+check_hash_dev_head $DEV 2048 $HASH2
+echo $PWD1 | $CRYPTSETUP reencrypt $DEV --encrypt --reduce-device-size 64M -q $FAST_PBKDF_ARGON || fail
+check_hash_head $PWD1 2048 $HASH2
+
+wipe_dev_head $DEV 1
+check_hash_dev_head $DEV 2048 $HASH2
+echo $PWD1 | $CRYPTSETUP reencrypt $DEV --encrypt --reduce-device-size 64M --init-only -q $FAST_PBKDF_ARGON $DEV_NAME >/dev/null || fail
+check_hash_dev_head /dev/mapper/$DEV_NAME 2048 $HASH2
+echo $PWD1 | $CRYPTSETUP reencrypt $DEV -q || fail
+check_hash_dev_head /dev/mapper/$DEV_NAME 2048 $HASH2
+
echo "[3] Encryption with detached header"
preparebig 256
wipe_dev $DEV
--
2.38.1

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@ -0,0 +1,28 @@
From 23903951505cd4ad9f3469e037278494c14a7791 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Wed, 12 Oct 2022 12:05:00 +0200
Subject: [PATCH 3/5] Code cleanup.
Type cast is not needed here.
---
lib/libdevmapper.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/lib/libdevmapper.c b/lib/libdevmapper.c
index 7fcf843f..6a239e14 100644
--- a/lib/libdevmapper.c
+++ b/lib/libdevmapper.c
@@ -1992,9 +1992,7 @@ static int _dm_target_query_crypt(struct crypt_device *cd, uint32_t get_flags,
/* cipher */
if (get_flags & DM_ACTIVE_CRYPT_CIPHER) {
- r = crypt_capi_to_cipher(CONST_CAST(char**)&cipher,
- CONST_CAST(char**)&integrity,
- rcipher, rintegrity);
+ r = crypt_capi_to_cipher(&cipher, &integrity, rcipher, rintegrity);
if (r < 0)
goto err;
}
--
2.38.1

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@ -0,0 +1,34 @@
From 19c15a652f878458493f0ac335110e2779f3cbe3 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Wed, 12 Oct 2022 11:59:09 +0200
Subject: [PATCH 4/5] Copy also integrity string in legacy mode.
So that it handles integrity string same as it does
with cipher string.
---
lib/utils_crypt.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/lib/utils_crypt.c b/lib/utils_crypt.c
index 4f4dbba8..93f846d7 100644
--- a/lib/utils_crypt.c
+++ b/lib/utils_crypt.c
@@ -284,7 +284,14 @@ int crypt_capi_to_cipher(char **org_c, char **org_i, const char *c_dm, const cha
if (strncmp(c_dm, "capi:", 4)) {
if (!(*org_c = strdup(c_dm)))
return -ENOMEM;
- *org_i = NULL;
+ if (i_dm) {
+ if (!(*org_i = strdup(i_dm))) {
+ free(*org_c);
+ *org_c = NULL;
+ return -ENOMEM;
+ }
+ } else
+ *org_i = NULL;
return 0;
}
--
2.38.1

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@ -0,0 +1,53 @@
From 3616da631f83a004a13a575a54df8123f0d65c29 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Mon, 17 Oct 2022 15:18:42 +0200
Subject: [PATCH 1/5] Fix cipher convert routines naming confusion.
The function names were in fact swaped.
---
lib/libdevmapper.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/lib/libdevmapper.c b/lib/libdevmapper.c
index 6c2eab78..0e45a789 100644
--- a/lib/libdevmapper.c
+++ b/lib/libdevmapper.c
@@ -481,7 +481,7 @@ static size_t int_log10(uint64_t x)
#define CAPIL 144 /* should be enough to fit whole capi string */
#define CAPIS "143" /* for sscanf of crypto API string + 16 + \0 */
-static int cipher_c2dm(const char *org_c, const char *org_i, unsigned tag_size,
+static int cipher_dm2c(const char *org_c, const char *org_i, unsigned tag_size,
char *c_dm, int c_dm_size,
char *i_dm, int i_dm_size)
{
@@ -543,7 +543,7 @@ static int cipher_c2dm(const char *org_c, const char *org_i, unsigned tag_size,
return 0;
}
-static int cipher_dm2c(char **org_c, char **org_i, const char *c_dm, const char *i_dm)
+static int cipher_c2dm(char **org_c, char **org_i, const char *c_dm, const char *i_dm)
{
char cipher[CLEN], mode[CLEN], iv[CLEN], auth[CLEN];
char tmp[CAPIL], dmcrypt_tmp[CAPIL*2], capi[CAPIL+1];
@@ -629,7 +629,7 @@ static char *get_dm_crypt_params(const struct dm_target *tgt, uint32_t flags)
if (!tgt)
return NULL;
- r = cipher_c2dm(tgt->u.crypt.cipher, tgt->u.crypt.integrity, tgt->u.crypt.tag_size,
+ r = cipher_dm2c(tgt->u.crypt.cipher, tgt->u.crypt.integrity, tgt->u.crypt.tag_size,
cipher_dm, sizeof(cipher_dm), integrity_dm, sizeof(integrity_dm));
if (r < 0)
return NULL;
@@ -2066,7 +2066,7 @@ static int _dm_target_query_crypt(struct crypt_device *cd, uint32_t get_flags,
/* cipher */
if (get_flags & DM_ACTIVE_CRYPT_CIPHER) {
- r = cipher_dm2c(CONST_CAST(char**)&cipher,
+ r = cipher_c2dm(CONST_CAST(char**)&cipher,
CONST_CAST(char**)&integrity,
rcipher, rintegrity);
if (r < 0)
--
2.38.1

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@ -0,0 +1,130 @@
From 3e4c69a01709d35322ffa17c5360608907a207d7 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Tue, 11 Oct 2022 11:48:13 +0200
Subject: [PATCH 5/5] Fix internal crypt segment compare routine.
The function is supposed to check if manipulated
active dm-crypt device matches the on-disk metadata.
Unfortunately it did not take into account differences
between normal cipher specification (aes-xts-plain64)
and capi format specification (capi:xts(aes)-plain64).
The internal query function always converted capi format
in normal format and therefor failed if capi format was
used in metadata.
Fixes: #759.
---
lib/setup.c | 36 ++++++++++++++++++++++++++----------
tests/api-test-2.c | 14 ++++++++++++--
2 files changed, 38 insertions(+), 12 deletions(-)
diff --git a/lib/setup.c b/lib/setup.c
index 6d7411b5..809049b9 100644
--- a/lib/setup.c
+++ b/lib/setup.c
@@ -2458,6 +2458,9 @@ static int _compare_crypt_devices(struct crypt_device *cd,
const struct dm_target *src,
const struct dm_target *tgt)
{
+ char *src_cipher = NULL, *src_integrity = NULL;
+ int r = -EINVAL;
+
/* for crypt devices keys are mandatory */
if (!src->u.crypt.vk || !tgt->u.crypt.vk)
return -EINVAL;
@@ -2465,21 +2468,30 @@ static int _compare_crypt_devices(struct crypt_device *cd,
/* CIPHER checks */
if (!src->u.crypt.cipher || !tgt->u.crypt.cipher)
return -EINVAL;
- if (strcmp(src->u.crypt.cipher, tgt->u.crypt.cipher)) {
- log_dbg(cd, "Cipher specs do not match.");
+
+ /*
+ * dm_query_target converts capi cipher specification to dm-crypt format.
+ * We need to do same for cipher specification requested in source
+ * device.
+ */
+ if (crypt_capi_to_cipher(&src_cipher, &src_integrity, src->u.crypt.cipher, src->u.crypt.integrity))
return -EINVAL;
+
+ if (strcmp(src_cipher, tgt->u.crypt.cipher)) {
+ log_dbg(cd, "Cipher specs do not match.");
+ goto out;
}
if (tgt->u.crypt.vk->keylength == 0 && crypt_is_cipher_null(tgt->u.crypt.cipher))
log_dbg(cd, "Existing device uses cipher null. Skipping key comparison.");
else if (_compare_volume_keys(src->u.crypt.vk, 0, tgt->u.crypt.vk, tgt->u.crypt.vk->key_description != NULL)) {
log_dbg(cd, "Keys in context and target device do not match.");
- return -EINVAL;
+ goto out;
}
- if (crypt_strcmp(src->u.crypt.integrity, tgt->u.crypt.integrity)) {
+ if (crypt_strcmp(src_integrity, tgt->u.crypt.integrity)) {
log_dbg(cd, "Integrity parameters do not match.");
- return -EINVAL;
+ goto out;
}
if (src->u.crypt.offset != tgt->u.crypt.offset ||
@@ -2487,15 +2499,19 @@ static int _compare_crypt_devices(struct crypt_device *cd,
src->u.crypt.iv_offset != tgt->u.crypt.iv_offset ||
src->u.crypt.tag_size != tgt->u.crypt.tag_size) {
log_dbg(cd, "Integer parameters do not match.");
- return -EINVAL;
+ goto out;
}
- if (device_is_identical(src->data_device, tgt->data_device) <= 0) {
+ if (device_is_identical(src->data_device, tgt->data_device) <= 0)
log_dbg(cd, "Data devices do not match.");
- return -EINVAL;
- }
+ else
+ r = 0;
- return 0;
+out:
+ free(src_cipher);
+ free(src_integrity);
+
+ return r;
}
static int _compare_integrity_devices(struct crypt_device *cd,
diff --git a/tests/api-test-2.c b/tests/api-test-2.c
index 0534677a..34002d1a 100644
--- a/tests/api-test-2.c
+++ b/tests/api-test-2.c
@@ -1585,8 +1585,8 @@ static void ResizeDeviceLuks2(void)
const char *mk_hex = "bb21158c733229347bd4e681891e213d94c685be6a5b84818afe7a78a6de7a1a";
size_t key_size = strlen(mk_hex) / 2;
- const char *cipher = "aes";
- const char *cipher_mode = "cbc-essiv:sha256";
+ const char *cipher = "aes", *capi_cipher = "capi:cbc(aes)";
+ const char *cipher_mode = "cbc-essiv:sha256", *capi_cipher_mode = "essiv:sha256";
uint64_t r_payload_offset, r_header_size, r_size;
/* Cannot use Argon2 in FIPS */
@@ -1728,6 +1728,16 @@ static void ResizeDeviceLuks2(void)
OK_(crypt_deactivate(cd, CDEVICE_1));
CRYPT_FREE(cd);
+ OK_(crypt_init(&cd, DMDIR L_DEVICE_OK));
+ OK_(crypt_set_pbkdf_type(cd, &pbkdf));
+ OK_(crypt_format(cd, CRYPT_LUKS2, capi_cipher, capi_cipher_mode, NULL, key, key_size, NULL));
+ OK_(crypt_activate_by_volume_key(cd, CDEVICE_1, key, key_size, 0));
+ OK_(crypt_resize(cd, CDEVICE_1, 8));
+ if (!t_device_size(DMDIR CDEVICE_1, &r_size))
+ EQ_(8, r_size >> SECTOR_SHIFT);
+ OK_(crypt_deactivate(cd, CDEVICE_1));
+ CRYPT_FREE(cd);
+
_cleanup_dmdevices();
}
--
2.38.1

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@ -0,0 +1,250 @@
From 9a9ddc7d22e14e14c9a6e97860cffada406adac3 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Tue, 11 Oct 2022 10:50:17 +0200
Subject: [PATCH 2/5] Move cipher_dm2c to crypto utilities.
(Gets renamed to crypt_capi_to_cipher)
---
lib/libdevmapper.c | 84 +++-------------------------------------------
lib/utils_crypt.c | 72 +++++++++++++++++++++++++++++++++++++++
lib/utils_crypt.h | 11 ++++--
3 files changed, 85 insertions(+), 82 deletions(-)
diff --git a/lib/libdevmapper.c b/lib/libdevmapper.c
index 0e45a789..7fcf843f 100644
--- a/lib/libdevmapper.c
+++ b/lib/libdevmapper.c
@@ -476,27 +476,22 @@ static size_t int_log10(uint64_t x)
return r;
}
-#define CLEN 64 /* 2*MAX_CIPHER_LEN */
-#define CLENS "63" /* for sscanf length + '\0' */
-#define CAPIL 144 /* should be enough to fit whole capi string */
-#define CAPIS "143" /* for sscanf of crypto API string + 16 + \0 */
-
static int cipher_dm2c(const char *org_c, const char *org_i, unsigned tag_size,
char *c_dm, int c_dm_size,
char *i_dm, int i_dm_size)
{
int c_size = 0, i_size = 0, i;
- char cipher[CLEN], mode[CLEN], iv[CLEN+1], tmp[CLEN];
- char capi[CAPIL];
+ char cipher[MAX_CAPI_ONE_LEN], mode[MAX_CAPI_ONE_LEN], iv[MAX_CAPI_ONE_LEN+1],
+ tmp[MAX_CAPI_ONE_LEN], capi[MAX_CAPI_LEN];
if (!c_dm || !c_dm_size || !i_dm || !i_dm_size)
return -EINVAL;
- i = sscanf(org_c, "%" CLENS "[^-]-%" CLENS "s", cipher, tmp);
+ i = sscanf(org_c, "%" MAX_CAPI_ONE_LEN_STR "[^-]-%" MAX_CAPI_ONE_LEN_STR "s", cipher, tmp);
if (i != 2)
return -EINVAL;
- i = sscanf(tmp, "%" CLENS "[^-]-%" CLENS "s", mode, iv);
+ i = sscanf(tmp, "%" MAX_CAPI_ONE_LEN_STR "[^-]-%" MAX_CAPI_ONE_LEN_STR "s", mode, iv);
if (i == 1) {
memset(iv, 0, sizeof(iv));
strncpy(iv, mode, sizeof(iv)-1);
@@ -543,75 +538,6 @@ static int cipher_dm2c(const char *org_c, const char *org_i, unsigned tag_size,
return 0;
}
-static int cipher_c2dm(char **org_c, char **org_i, const char *c_dm, const char *i_dm)
-{
- char cipher[CLEN], mode[CLEN], iv[CLEN], auth[CLEN];
- char tmp[CAPIL], dmcrypt_tmp[CAPIL*2], capi[CAPIL+1];
- size_t len;
- int i;
-
- if (!c_dm)
- return -EINVAL;
-
- /* legacy mode */
- if (strncmp(c_dm, "capi:", 4)) {
- if (!(*org_c = strdup(c_dm)))
- return -ENOMEM;
- *org_i = NULL;
- return 0;
- }
-
- /* modes with capi: prefix */
- i = sscanf(c_dm, "capi:%" CAPIS "[^-]-%" CLENS "s", tmp, iv);
- if (i != 2)
- return -EINVAL;
-
- len = strlen(tmp);
- if (len < 2)
- return -EINVAL;
-
- if (tmp[len-1] == ')')
- tmp[len-1] = '\0';
-
- if (sscanf(tmp, "rfc4309(%" CAPIS "s", capi) == 1) {
- if (!(*org_i = strdup("aead")))
- return -ENOMEM;
- } else if (sscanf(tmp, "rfc7539(%" CAPIS "[^,],%" CLENS "s", capi, auth) == 2) {
- if (!(*org_i = strdup(auth)))
- return -ENOMEM;
- } else if (sscanf(tmp, "authenc(%" CLENS "[^,],%" CAPIS "s", auth, capi) == 2) {
- if (!(*org_i = strdup(auth)))
- return -ENOMEM;
- } else {
- if (i_dm) {
- if (!(*org_i = strdup(i_dm)))
- return -ENOMEM;
- } else
- *org_i = NULL;
- memset(capi, 0, sizeof(capi));
- strncpy(capi, tmp, sizeof(capi)-1);
- }
-
- i = sscanf(capi, "%" CLENS "[^(](%" CLENS "[^)])", mode, cipher);
- if (i == 2)
- i = snprintf(dmcrypt_tmp, sizeof(dmcrypt_tmp), "%s-%s-%s", cipher, mode, iv);
- else
- i = snprintf(dmcrypt_tmp, sizeof(dmcrypt_tmp), "%s-%s", capi, iv);
- if (i < 0 || (size_t)i >= sizeof(dmcrypt_tmp)) {
- free(*org_i);
- *org_i = NULL;
- return -EINVAL;
- }
-
- if (!(*org_c = strdup(dmcrypt_tmp))) {
- free(*org_i);
- *org_i = NULL;
- return -ENOMEM;
- }
-
- return 0;
-}
-
static char *_uf(char *buf, size_t buf_size, const char *s, unsigned u)
{
size_t r = snprintf(buf, buf_size, " %s:%u", s, u);
@@ -2066,7 +1992,7 @@ static int _dm_target_query_crypt(struct crypt_device *cd, uint32_t get_flags,
/* cipher */
if (get_flags & DM_ACTIVE_CRYPT_CIPHER) {
- r = cipher_c2dm(CONST_CAST(char**)&cipher,
+ r = crypt_capi_to_cipher(CONST_CAST(char**)&cipher,
CONST_CAST(char**)&integrity,
rcipher, rintegrity);
if (r < 0)
diff --git a/lib/utils_crypt.c b/lib/utils_crypt.c
index 83d0a2c5..4f4dbba8 100644
--- a/lib/utils_crypt.c
+++ b/lib/utils_crypt.c
@@ -31,6 +31,8 @@
#include "libcryptsetup.h"
#include "utils_crypt.h"
+#define MAX_CAPI_LEN_STR "143" /* for sscanf of crypto API string + 16 + \0 */
+
int crypt_parse_name_and_mode(const char *s, char *cipher, int *key_nums,
char *cipher_mode)
{
@@ -266,3 +268,73 @@ bool crypt_is_cipher_null(const char *cipher_spec)
return false;
return (strstr(cipher_spec, "cipher_null") || !strcmp(cipher_spec, "null"));
}
+
+int crypt_capi_to_cipher(char **org_c, char **org_i, const char *c_dm, const char *i_dm)
+{
+ char cipher[MAX_CAPI_ONE_LEN], mode[MAX_CAPI_ONE_LEN], iv[MAX_CAPI_ONE_LEN],
+ auth[MAX_CAPI_ONE_LEN], tmp[MAX_CAPI_LEN], dmcrypt_tmp[MAX_CAPI_LEN*2],
+ capi[MAX_CAPI_LEN+1];
+ size_t len;
+ int i;
+
+ if (!c_dm)
+ return -EINVAL;
+
+ /* legacy mode */
+ if (strncmp(c_dm, "capi:", 4)) {
+ if (!(*org_c = strdup(c_dm)))
+ return -ENOMEM;
+ *org_i = NULL;
+ return 0;
+ }
+
+ /* modes with capi: prefix */
+ i = sscanf(c_dm, "capi:%" MAX_CAPI_LEN_STR "[^-]-%" MAX_CAPI_ONE_LEN_STR "s", tmp, iv);
+ if (i != 2)
+ return -EINVAL;
+
+ len = strlen(tmp);
+ if (len < 2)
+ return -EINVAL;
+
+ if (tmp[len-1] == ')')
+ tmp[len-1] = '\0';
+
+ if (sscanf(tmp, "rfc4309(%" MAX_CAPI_LEN_STR "s", capi) == 1) {
+ if (!(*org_i = strdup("aead")))
+ return -ENOMEM;
+ } else if (sscanf(tmp, "rfc7539(%" MAX_CAPI_LEN_STR "[^,],%" MAX_CAPI_ONE_LEN_STR "s", capi, auth) == 2) {
+ if (!(*org_i = strdup(auth)))
+ return -ENOMEM;
+ } else if (sscanf(tmp, "authenc(%" MAX_CAPI_ONE_LEN_STR "[^,],%" MAX_CAPI_LEN_STR "s", auth, capi) == 2) {
+ if (!(*org_i = strdup(auth)))
+ return -ENOMEM;
+ } else {
+ if (i_dm) {
+ if (!(*org_i = strdup(i_dm)))
+ return -ENOMEM;
+ } else
+ *org_i = NULL;
+ memset(capi, 0, sizeof(capi));
+ strncpy(capi, tmp, sizeof(capi)-1);
+ }
+
+ i = sscanf(capi, "%" MAX_CAPI_ONE_LEN_STR "[^(](%" MAX_CAPI_ONE_LEN_STR "[^)])", mode, cipher);
+ if (i == 2)
+ i = snprintf(dmcrypt_tmp, sizeof(dmcrypt_tmp), "%s-%s-%s", cipher, mode, iv);
+ else
+ i = snprintf(dmcrypt_tmp, sizeof(dmcrypt_tmp), "%s-%s", capi, iv);
+ if (i < 0 || (size_t)i >= sizeof(dmcrypt_tmp)) {
+ free(*org_i);
+ *org_i = NULL;
+ return -EINVAL;
+ }
+
+ if (!(*org_c = strdup(dmcrypt_tmp))) {
+ free(*org_i);
+ *org_i = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
diff --git a/lib/utils_crypt.h b/lib/utils_crypt.h
index 5922350a..a4a9b6ca 100644
--- a/lib/utils_crypt.h
+++ b/lib/utils_crypt.h
@@ -27,9 +27,12 @@
#include <stdbool.h>
#include <unistd.h>
-#define MAX_CIPHER_LEN 32
-#define MAX_CIPHER_LEN_STR "31"
-#define MAX_KEYFILES 32
+#define MAX_CIPHER_LEN 32
+#define MAX_CIPHER_LEN_STR "31"
+#define MAX_KEYFILES 32
+#define MAX_CAPI_ONE_LEN 2 * MAX_CIPHER_LEN
+#define MAX_CAPI_ONE_LEN_STR "63" /* for sscanf length + '\0' */
+#define MAX_CAPI_LEN 144 /* should be enough to fit whole capi string */
int crypt_parse_name_and_mode(const char *s, char *cipher,
int *key_nums, char *cipher_mode);
@@ -46,4 +49,6 @@ void crypt_log_hex(struct crypt_device *cd,
bool crypt_is_cipher_null(const char *cipher_spec);
+int crypt_capi_to_cipher(char **org_c, char **org_i, const char *c_dm, const char *i_dm);
+
#endif /* _UTILS_CRYPT_H */
--
2.38.1

View File

@ -0,0 +1,154 @@
From c18dcfaa0b91eb48006232fbfadce9e6a9b4a790 Mon Sep 17 00:00:00 2001
From: Ondrej Kozina <okozina@redhat.com>
Date: Fri, 2 Dec 2022 15:39:36 +0100
Subject: [PATCH 2/2] Abort encryption when header and data devices are same.
If data device reduction is not requsted this led
to data corruption since LUKS metadata was written
over the data device.
---
src/utils_reencrypt.c | 42 ++++++++++++++++++++++++++++++----
tests/luks2-reencryption-test | 16 +++++++++++++
tests/reencryption-compat-test | 20 +++++++++++++---
3 files changed, 70 insertions(+), 8 deletions(-)
diff --git a/src/utils_tools.c b/src/utils_tools.c
--- a/src/utils_tools.c
+++ b/src/utils_tools.c
@@ -624,3 +624,23 @@ int tools_reencrypt_progress(uint64_t si
return r;
}
+
+int reencrypt_is_header_detached(const char *header_device, const char *data_device)
+{
+ int r;
+ struct stat st;
+ struct crypt_device *cd;
+
+ if (!header_device)
+ return 0;
+
+ if (header_device && stat(header_device, &st) < 0 && errno == ENOENT)
+ return 1;
+
+ if ((r = crypt_init_data_device(&cd, header_device, data_device)))
+ return r;
+
+ r = crypt_get_metadata_device_name(cd) && crypt_get_device_name(cd) && strcmp(crypt_get_metadata_device_name(cd), crypt_get_device_name(cd));
+ crypt_free(cd);
+ return r;
+}
diff --git a/src/cryptsetup.h b/src/cryptsetup.h
--- a/src/cryptsetup.h
+++ b/src/cryptsetup.h
@@ -103,6 +103,7 @@ void tools_clear_line(void);
int tools_wipe_progress(uint64_t size, uint64_t offset, void *usrptr);
int tools_reencrypt_progress(uint64_t size, uint64_t offset, void *usrptr);
+int reencrypt_is_header_detached(const char *header_device, const char *data_device);
int tools_read_mk(const char *file, char **key, int keysize);
int tools_write_mk(const char *file, const char *key, int keysize);
diff --git a/src/cryptsetup.c b/src/cryptsetup.c
--- a/src/cryptsetup.c
+++ b/src/cryptsetup.c
@@ -2892,6 +2892,16 @@ static int action_encrypt_luks2(struct c
return -ENOTSUP;
}
+ if (!opt_data_shift) {
+ r = reencrypt_is_header_detached(opt_header_device, action_argv[0]);
+ if (r < 0)
+ return r;
+ if (!r) {
+ log_err(_("Encryption without detached header (--header) is not possible without data device size reduction (--reduce-device-size)."));
+ return -ENOTSUP;
+ }
+ }
+
if (!opt_header_device && opt_offset && opt_data_shift && (opt_offset > (imaxabs(opt_data_shift) / (2 * SECTOR_SIZE)))) {
log_err(_("Requested data offset must be less than or equal to half of --reduce-device-size parameter."));
return -EINVAL;
diff --git a/src/cryptsetup_reencrypt.c b/src/cryptsetup_reencrypt.c
--- a/src/cryptsetup_reencrypt.c
+++ b/src/cryptsetup_reencrypt.c
@@ -1553,6 +1553,17 @@ static int run_reencrypt(const char *dev
goto out;
}
+ if (rc.reencrypt_mode == ENCRYPT) {
+ r = reencrypt_is_header_detached(opt_header_device, action_argv[0]);
+ if (r < 0)
+ goto out;
+ if (!r && !opt_reduce_size) {
+ log_err(_("Encryption without detached header (--header) is not possible without data device size reduction (--reduce-device-size)."));
+ r = -ENOTSUP;
+ goto out;
+ }
+ }
+
log_dbg("Running reencryption.");
if (!rc.in_progress) {
diff --git a/tests/luks2-reencryption-test b/tests/luks2-reencryption-test
index bab54353..a647a8c2 100755
--- a/tests/luks2-reencryption-test
+++ b/tests/luks2-reencryption-test
@@ -1080,6 +1080,15 @@ $CRYPTSETUP status $DEV_NAME >/dev/null 2>&1 || fail
$CRYPTSETUP close $DEV_NAME
echo $PWD1 | $CRYPTSETUP open --header $IMG_HDR $DEV --test-passphrase || fail
+# Encrypt without size reduction must not allow header device same as data device
+wipe_dev_head $DEV 1
+echo $PWD1 | $CRYPTSETUP reencrypt $DEV --type luks2 --encrypt --header $DEV -q $FAST_PBKDF_ARGON 2>/dev/null && fail
+$CRYPTSETUP isLUKS $DEV 2>/dev/null && fail
+
+dd if=/dev/zero of=$IMG bs=4k count=1 >/dev/null 2>&1
+echo $PWD1 | $CRYPTSETUP reencrypt $IMG --type luks2 --encrypt --header $IMG -q $FAST_PBKDF_ARGON 2>/dev/null && fail
+$CRYPTSETUP isLUKS $IMG 2>/dev/null && fail
+
echo "[4] Reencryption with detached header"
wipe $PWD1 $IMG_HDR
echo $PWD1 | $CRYPTSETUP reencrypt -c aes-cbc-essiv:sha256 -s 128 --header $IMG_HDR -q $FAST_PBKDF_ARGON $DEV || fail
diff --git a/tests/reencryption-compat-test b/tests/reencryption-compat-test
index f6a84137..453831d1 100755
--- a/tests/reencryption-compat-test
+++ b/tests/reencryption-compat-test
@@ -11,5 +11,6 @@ IMG=reenc-data
IMG_HDR=$IMG.hdr
ORIG_IMG=reenc-data-orig
+DEV_LINK="reenc-test-link"
KEY1=key1
PWD1="93R4P4pIqAH8"
PWD2="1cND4319812f"
@@ -40,7 +41,7 @@ function remove_mapping()
[ -b /dev/mapper/$DEV_NAME2 ] && dmsetup remove --retry $DEV_NAME2
[ -b /dev/mapper/$DEV_NAME ] && dmsetup remove --retry $DEV_NAME
[ ! -z "$LOOPDEV1" ] && losetup -d $LOOPDEV1 >/dev/null 2>&1
- rm -f $IMG $IMG_HDR $ORIG_IMG $KEY1 >/dev/null 2>&1
+ rm -f $IMG $IMG_HDR $ORIG_IMG $KEY1 $DEV_LINK >/dev/null 2>&1
umount $MNT_DIR > /dev/null 2>&1
rmdir $MNT_DIR > /dev/null 2>&1
LOOPDEV1=""
@@ -265,10 +265,16 @@ $REENC $LOOPDEV1 -d $KEY1 $FAST_PBKDF -q
# FIXME echo $PWD1 | $REENC ...
echo "[4] Encryption of not yet encrypted device"
+# Encrypt without size reduction must not allow header device same as data device
+wipe_dev $LOOPDEV1
+echo $PWD1 | $REENC $LOOPDEV1 --type luks1 --new --header $LOOPDEV1 -q $FAST_PBKDF_ARGON 2>/dev/null && fail
+$CRYPTSETUP isLUKS $LOOPDEV1 2>/dev/null && fail
+echo $PWD1 | $REENC $IMG --type luks1 --new --header $IMG -q $FAST_PBKDF_ARGON 2>/dev/null && fail
+$CRYPTSETUP isLUKS $IMG 2>/dev/null && fail
+
# well, movin' zeroes :-)
OFFSET=2048
SIZE=$(blockdev --getsz $LOOPDEV1)
-wipe_dev $LOOPDEV1
dmsetup create $DEV_NAME2 --table "0 $(($SIZE - $OFFSET)) linear $LOOPDEV1 0" || fail
check_hash_dev /dev/mapper/$DEV_NAME2 $HASH3
dmsetup remove --retry $DEV_NAME2 || fail
--
2.38.1

View File

@ -5,7 +5,7 @@ Obsoletes: cryptsetup-python3
Summary: A utility for setting up encrypted disks
Name: cryptsetup
Version: 2.3.7
Release: 2%{?dist}
Release: 5%{?dist}
License: GPLv2+ and LGPLv2+
Group: Applications/System
URL: https://gitlab.com/cryptsetup/cryptsetup
@ -28,6 +28,13 @@ Patch3: %{name}-2.4.2-Fix-bogus-memory-allocation-if-LUKS2-header-size-is-.patc
Patch4: %{name}-2.5.0-Fix-typo-in-repair-prompt.patch
Patch5: %{name}-2.5.0-Fix-test-passphrase-when-device-in-reencryption.patch
Patch6: %{name}-2.5.0-Add-more-tests-for-test-passphrase-parameter.patch
Patch7: %{name}-2.5.0-Remove-LUKS2-encryption-data-size-restriction.patch
Patch8: %{name}-2.6.0-Fix-cipher-convert-routines-naming-confusion.patch
Patch9: %{name}-2.6.0-Move-cipher_dm2c-to-crypto-utilities.patch
Patch10: %{name}-2.6.0-Code-cleanup.patch
Patch11: %{name}-2.6.0-Copy-also-integrity-string-in-legacy-mode.patch
Patch12: %{name}-2.6.0-Fix-internal-crypt-segment-compare-routine.patch
Patch13: %{name}-2.6.1-Abort-encryption-when-header-and-data-devices-are-sa.patch
%description
The cryptsetup package contains a utility for setting up
@ -35,7 +42,7 @@ disk encryption using dm-crypt kernel module.
%package devel
Group: Development/Libraries
Requires: %{name} = %{version}-%{release}
Requires: %{name}-libs%{?_isa} = %{version}-%{release}
Requires: pkgconfig
Summary: Headers and libraries for using encrypted file systems
Provides: cryptsetup-luks-devel = %{version}-%{release}
@ -89,6 +96,13 @@ can be used for offline reencryption of disk in situ.
%patch4 -p1
%patch5 -p1
%patch6 -p1
%patch7 -p1
%patch8 -p1
%patch9 -p1
%patch10 -p1
%patch11 -p1
%patch12 -p1
%patch13 -p1
%patch0 -p1
chmod -x misc/dracut_90reencrypt/*
@ -148,6 +162,19 @@ rm -rf %{buildroot}/%{_libdir}/*.la
%clean
%changelog
* Tue Jan 10 2023 Daniel Zatovic <dzatovic@redhat.com> - 2.3.7-5
- change cryptsetup-devel dependency from cryptsetup to cryptsetup-libs
- Resolves: #2150254
* Wed Dec 21 2022 Daniel Zatovic <dzatovic@redhat.com> - 2.3.7-4
- patch: Remove LUKS2 encryption data size restriction.
- patch: Abort encryption when header and data devices are same.
- Resolves: #2150254
* Fri Nov 4 2022 Daniel Zatovic <dzatovic@redhat.com> - 2.3.7-3
- patch: Fix internal crypt segment compare routine
- Resolves: #2110810
* Thu Feb 24 2022 Ondrej Kozina <okozina@redhat.com> - 2.3.7-2
- patch: Fix cryptsetup --test-passphrase when device in
reencryption