From: Eric Biggers <ebiggers@google.com>
Date: Sun, 29 Oct 2023 05:03:00 +0000 (-0700)
Subject: smb: use crypto_shash_digest() in symlink_hash()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=783fa2c94f4150fe1b7f7d88b3baf6d98f82b41b;p=linux.git

smb: use crypto_shash_digest() in symlink_hash()

Simplify symlink_hash() by using crypto_shash_digest() instead of an
init+update+final sequence.  This should also improve performance.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
---

diff --git a/fs/smb/client/link.c b/fs/smb/client/link.c
index c66be4904e1fa..a1da50e66fbb6 100644
--- a/fs/smb/client/link.c
+++ b/fs/smb/client/link.c
@@ -42,23 +42,11 @@ symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
 
 	rc = cifs_alloc_hash("md5", &md5);
 	if (rc)
-		goto symlink_hash_err;
+		return rc;
 
-	rc = crypto_shash_init(md5);
-	if (rc) {
-		cifs_dbg(VFS, "%s: Could not init md5 shash\n", __func__);
-		goto symlink_hash_err;
-	}
-	rc = crypto_shash_update(md5, link_str, link_len);
-	if (rc) {
-		cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__);
-		goto symlink_hash_err;
-	}
-	rc = crypto_shash_final(md5, md5_hash);
+	rc = crypto_shash_digest(md5, link_str, link_len, md5_hash);
 	if (rc)
 		cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
-
-symlink_hash_err:
 	cifs_free_hash(&md5);
 	return rc;
 }