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Diffstat (limited to 'drivers/md/dm-crypt.c')
-rw-r--r--drivers/md/dm-crypt.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 0ff22159a0ca..47d4e0d30bf0 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2414,9 +2414,21 @@ static int crypt_ctr_cipher_new(struct dm_target *ti, char *cipher_in, char *key
* capi:cipher_api_spec-iv:ivopts
*/
tmp = &cipher_in[strlen("capi:")];
- cipher_api = strsep(&tmp, "-");
- *ivmode = strsep(&tmp, ":");
- *ivopts = tmp;
+
+ /* Separate IV options if present, it can contain another '-' in hash name */
+ *ivopts = strrchr(tmp, ':');
+ if (*ivopts) {
+ **ivopts = '\0';
+ (*ivopts)++;
+ }
+ /* Parse IV mode */
+ *ivmode = strrchr(tmp, '-');
+ if (*ivmode) {
+ **ivmode = '\0';
+ (*ivmode)++;
+ }
+ /* The rest is crypto API spec */
+ cipher_api = tmp;
if (*ivmode && !strcmp(*ivmode, "lmk"))
cc->tfms_count = 64;
@@ -2486,11 +2498,8 @@ static int crypt_ctr_cipher_old(struct dm_target *ti, char *cipher_in, char *key
goto bad_mem;
chainmode = strsep(&tmp, "-");
- *ivopts = strsep(&tmp, "-");
- *ivmode = strsep(&*ivopts, ":");
-
- if (tmp)
- DMWARN("Ignoring unexpected additional cipher options");
+ *ivmode = strsep(&tmp, ":");
+ *ivopts = tmp;
/*
* For compatibility with the original dm-crypt mapping format, if