[PATCH 6.6 004/102] smb: use crypto_shash_digest() in symlink_hash()

Greg Kroah-Hartman
2024-05-23T13:23:02Z

From: Eric Biggers <ebiggers@google.com>

[ Upstream commit 783fa2c94f4150fe1b7f7d88b3baf6d98f82b41b ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/client/link.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/fs/smb/client/link.c b/fs/smb/client/link.c
index 6c4ae52ddc04f..3ef34218a790d 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;
}
--
2.43.0