From bfb9700bdf35417454a9bb8b67221d89d7c6e75a Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 30 Apr 2022 22:08:53 -0700 Subject: fscrypt: factor out fscrypt_policy_to_key_spec() Factor out a function that builds the fscrypt_key_specifier for an fscrypt_policy. Before this was only needed when finding the key for a file, but now it will also be needed for test_dummy_encryption support. Signed-off-by: Eric Biggers Link: https://lore.kernel.org/r/20220501050857.538984-4-ebiggers@kernel.org --- fs/crypto/keysetup.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) (limited to 'fs/crypto/keysetup.c') diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c index 6b509af13e0d..c35711896bd4 100644 --- a/fs/crypto/keysetup.c +++ b/fs/crypto/keysetup.c @@ -425,23 +425,9 @@ static int setup_file_encryption_key(struct fscrypt_info *ci, if (err) return err; - switch (ci->ci_policy.version) { - case FSCRYPT_POLICY_V1: - mk_spec.type = FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR; - memcpy(mk_spec.u.descriptor, - ci->ci_policy.v1.master_key_descriptor, - FSCRYPT_KEY_DESCRIPTOR_SIZE); - break; - case FSCRYPT_POLICY_V2: - mk_spec.type = FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER; - memcpy(mk_spec.u.identifier, - ci->ci_policy.v2.master_key_identifier, - FSCRYPT_KEY_IDENTIFIER_SIZE); - break; - default: - WARN_ON(1); - return -EINVAL; - } + err = fscrypt_policy_to_key_spec(&ci->ci_policy, &mk_spec); + if (err) + return err; key = fscrypt_find_master_key(ci->ci_inode->i_sb, &mk_spec); if (IS_ERR(key)) { -- cgit