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Add blkid scan when attemting to open plain device.

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Warn user about existing device signatures on candidate ciphertext
device and prompt for action confirmation.

Fixes #411.
This commit is contained in:
Ondrej Kozina
2018-09-24 15:38:05 +02:00
committed by Milan Broz
parent b93b676336
commit ee689d88b4
3 changed files with 28 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/cryptsetup.c
View File

@@ -166,7 +166,7 @@ static void _set_activation_flags(uint32_t *flags)
static int action_open_plain(void)
{
struct crypt_device *cd = NULL;
char cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
char *msg, cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
struct crypt_params_plain params = {
.hash = opt_hash ?: DEFAULT_PLAIN_HASH,
.skip = opt_skip,
@@ -175,8 +175,8 @@ static int action_open_plain(void)
.sector_size = opt_sector_size,
};
char *password = NULL;
size_t passwordLen, key_size_max;
size_t key_size = (opt_key_size ?: DEFAULT_PLAIN_KEYBITS) / 8;
size_t passwordLen, key_size_max, signatures,
key_size = (opt_key_size ?: DEFAULT_PLAIN_KEYBITS) / 8;
uint32_t activate_flags = 0;
int r;
@@ -205,6 +205,27 @@ static int action_open_plain(void)
if ((r = crypt_init(&cd, action_argv[0])))
goto out;
/* Skip blkid scan when activating plain device with offset */
if (!opt_offset) {
/* Print all present signatures in read-only mode */
r = tools_detect_signatures(action_argv[0], 0, &signatures);
if (r < 0)
goto out;
}
if (signatures) {
r = asprintf(&msg, _("Detected device signature(s) on %s. Proceeding further may damage existing data."), action_argv[0]);
if (r == -1) {
r = -ENOMEM;
goto out;
}
r = yesDialog(msg, _("Operation aborted.\n")) ? 0 : -EINVAL;
free(msg);
if (r < 0)
goto out;
}
r = crypt_format(cd, CRYPT_PLAIN,
cipher, cipher_mode,
NULL, NULL,

6
tests/device-test
View File

@@ -97,11 +97,11 @@ if [ -z "$DM_PERF_CPU" ]; then
SKIP_COUNT=$((SKIP_COUNT+1))
else
# plain
echo -e "$PWD1" | $CRYPTSETUP open --type plain $DEV $DEV_NAME --perf-same_cpu_crypt --perf-submit_from_crypt_cpus || fail
echo -e "$PWD1" | $CRYPTSETUP open -q --type plain $DEV $DEV_NAME --perf-same_cpu_crypt --perf-submit_from_crypt_cpus || fail
$CRYPTSETUP status $DEV_NAME | grep -q same_cpu_crypt || fail
$CRYPTSETUP status $DEV_NAME | grep -q submit_from_crypt_cpus || fail
$CRYPTSETUP close $DEV_NAME || fail
echo -e "$PWD1" | $CRYPTSETUP open --type plain $DEV $DEV_NAME --perf-same_cpu_crypt --allow-discards || fail
echo -e "$PWD1" | $CRYPTSETUP open -q --type plain $DEV $DEV_NAME --perf-same_cpu_crypt --allow-discards || fail
$CRYPTSETUP status $DEV_NAME | grep -q same_cpu_crypt || fail
$CRYPTSETUP status $DEV_NAME | grep -q discards || fail
$CRYPTSETUP close $DEV_NAME || fail
@@ -152,7 +152,7 @@ else
echo -e "$PWD1" | $CRYPTSETUP open --type plain $DEV $DEV_NAME --sector-size 1234 >/dev/null 2>&1 && fail
for S in 512 1024 2048 4096; do
echo -n "[$S]"
echo -e "$PWD1" | $CRYPTSETUP open --type plain $DEV $DEV_NAME --sector-size $S || fail
echo -e "$PWD1" | $CRYPTSETUP open -q --type plain $DEV $DEV_NAME --sector-size $S || fail
check_sector_size $S
$CRYPTSETUP close $DEV_NAME || fail
done

2
tests/discards-test
View File

@@ -74,7 +74,7 @@ dmsetup table $DEV_NAME | grep allow_discards >/dev/null || fail
$CRYPTSETUP luksClose $DEV_NAME || fail
echo "[2] Allowing discards for plain device"
echo $PWD1 | $CRYPTSETUP create $DEV_NAME $DEV --hash sha1 --allow-discards || fail
echo $PWD1 | $CRYPTSETUP create -q $DEV_NAME $DEV --hash sha1 --allow-discards || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
$CRYPTSETUP resize $DEV_NAME --size 100 || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail