[PATCH] device-mapper: dm-crypt fix for zero-length key

From: Alasdair G Kergon
Date: Thu Nov 11 2004 - 12:50:44 EST


dm-crypt fix for zero-length key.

Signed-Off-By: Christophe Saout <christophe@xxxxxxxx>
Signed-Off-By: Alasdair G Kergon <agk@xxxxxxxxxx>
--- diff/drivers/md/dm-crypt.c 2004-11-10 15:05:04.000000000 +0000
+++ source/drivers/md/dm-crypt.c 2004-11-10 15:05:24.000000000 +0000
@@ -569,8 +569,8 @@
}

cc->key_size = key_size;
- if ((key_size == 0 && strcmp(argv[1], "-") != 0)
- || crypt_decode_key(cc->key, argv[1], key_size) < 0) {
+ if ((!key_size && strcmp(argv[1], "-") != 0) ||
+ (key_size && crypt_decode_key(cc->key, argv[1], key_size) < 0)) {
ti->error = PFX "Error decoding key";
goto bad1;
}
-
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