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smb: use crypto_shash_digest() in symlink_hash()

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[ 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>
This commit is contained in:
Eric Biggers
2023-10-28 22:03:00 -07:00
committed by Greg Kroah-Hartman
parent 5b3c76351b
commit 69a1669a6b
1 changed files with 2 additions and 14 deletions
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16
fs/smb/client/link.c
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@@ -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;
}