From 52105bb4870e9b0728a185275fe001d69ff6b92c Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Sat, 17 Dec 2022 20:28:51 -0500
Subject: [PATCH] cryptsetup-fido2: Remove plain mode parameters from
 `acquire_fido2_key_auto()`

`acquire_fido2_key_auto()` will not be used in PLAIN mode, and
parameters such as the salt will be acquired from the LUKS header.
Parameters intended for PLAIN mode are useless in
`acquire_fido2_key_auto()`.
---
 src/cryptsetup/cryptsetup.c   | 1 -
 src/shared/cryptsetup-fido2.c | 7 +++----
 src/shared/cryptsetup-fido2.h | 6 ------
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index 389bf4fdcf1..a79a08e566b 100644
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -1121,7 +1121,6 @@ static int attach_luks_or_plain_or_bitlk_by_fido2(
                                                 name,
                                                 friendly,
                                                 arg_fido2_device,
-                                                key_file, arg_keyfile_size, arg_keyfile_offset,
                                                 until,
                                                 arg_headless,
                                                 &decrypted_key, &decrypted_key_size,
diff --git a/src/shared/cryptsetup-fido2.c b/src/shared/cryptsetup-fido2.c
index a3bdedba1d8..285b82a7e2b 100644
--- a/src/shared/cryptsetup-fido2.c
+++ b/src/shared/cryptsetup-fido2.c
@@ -132,9 +132,6 @@ int acquire_fido2_key_auto(
                 const char *name,
                 const char *friendly_name,
                 const char *fido2_device,
-                const char *key_file,
-                size_t key_file_size,
-                uint64_t key_file_offset,
                 usec_t until,
                 bool headless,
                 void **ret_decrypted_key,
@@ -252,7 +249,9 @@ int acquire_fido2_key_auto(
                                 fido2_device,
                                 rp,
                                 cid, cid_size,
-                                key_file, key_file_size, key_file_offset,
+                                /* key_file= */ NULL, /* salt is read from LUKS header instead of key_file */
+                                /* key_file_size= */ 0,
+                                /* key_file_offset= */ 0,
                                 salt, salt_size,
                                 until,
                                 headless,
diff --git a/src/shared/cryptsetup-fido2.h b/src/shared/cryptsetup-fido2.h
index 371bf21f0e6..d96bb403ff7 100644
--- a/src/shared/cryptsetup-fido2.h
+++ b/src/shared/cryptsetup-fido2.h
@@ -34,9 +34,6 @@ int acquire_fido2_key_auto(
                 const char *name,
                 const char *friendly_name,
                 const char *fido2_device,
-                const char *key_file,
-                size_t key_file_size,
-                uint64_t key_file_offset,
                 usec_t until,
                 bool headless,
                 void **ret_decrypted_key,
@@ -73,9 +70,6 @@ static inline int acquire_fido2_key_auto(
                 const char *name,
                 const char *friendly_name,
                 const char *fido2_device,
-                const char *key_file,
-                size_t key_file_size,
-                uint64_t key_file_offset,
                 usec_t until,
                 bool headless,
                 void **ret_decrypted_key,
-- 
2.47.3