linux-ext4 - [PATCH 11/15] fscrypt: remove unnecessary check for non-logon key type

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Date:   Mon, 30 Apr 2018 15:51:45 -0700
From:   Eric Biggers <ebiggers3@...il.com>
To:     linux-fscrypt@...r.kernel.org, "Theodore Y . Ts'o" <tytso@....edu>
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, Eric Biggers <ebiggers@...gle.com>
Subject: [PATCH 11/15] fscrypt: remove unnecessary check for non-logon key type

From: Eric Biggers <ebiggers@...gle.com>

We're passing 'key_type_logon' to request_key(), so the found key is
guaranteed to be of type "logon".  Thus, there is no reason to check
later that the key is really a "logon" key.

Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/crypto/keyinfo.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c
index 0f6a65c6483b..0b48aa469453 100644
--- a/fs/crypto/keyinfo.c
+++ b/fs/crypto/keyinfo.c
@@ -89,12 +89,6 @@ static int validate_user_key(struct fscrypt_info *crypt_info,
 		return PTR_ERR(keyring_key);
 	down_read(&keyring_key->sem);
 
-	if (keyring_key->type != &key_type_logon) {
-		printk_once(KERN_WARNING
-				"%s: key type must be logon\n", __func__);
-		res = -ENOKEY;
-		goto out;
-	}
 	ukp = user_key_payload_locked(keyring_key);
 	if (!ukp) {
 		/* key was revoked before we acquired its semaphore */
-- 
2.17.0.441.gb46fe60e1d-goog