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| author | Eric Biggers <ebiggers@google.com> | 2023-09-24 22:54:47 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2023-09-24 23:03:09 -0700 |
| commit | 5970fbad1036d1015abe45651628b39b5bcb8a22 (patch) | |
| tree | 1a57e1fb991838e1658d7087cb9515bc6446fb52 /fs/crypto | |
| parent | 6465e260f48790807eef06b583b38ca9789b6072 (diff) | |
| download | linux-5970fbad1036d1015abe45651628b39b5bcb8a22.tar.gz linux-5970fbad1036d1015abe45651628b39b5bcb8a22.tar.bz2 linux-5970fbad1036d1015abe45651628b39b5bcb8a22.zip | |
fscrypt: make it clearer that key_prefix is deprecated
fscrypt_operations::key_prefix should not be set by any filesystems that
aren't setting it already. This is already documented, but apparently
it's not sufficiently clear, as both ceph and btrfs have tried to set
it. Rename the field to legacy_key_prefix and improve the documentation
to hopefully make it clearer.
Link: https://lore.kernel.org/r/20230925055451.59499-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'fs/crypto')
| -rw-r--r-- | fs/crypto/keysetup_v1.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/crypto/keysetup_v1.c b/fs/crypto/keysetup_v1.c index 75dabd9b27f9..86b48a2b47d1 100644 --- a/fs/crypto/keysetup_v1.c +++ b/fs/crypto/keysetup_v1.c @@ -299,6 +299,7 @@ int fscrypt_setup_v1_file_key(struct fscrypt_info *ci, const u8 *raw_master_key) int fscrypt_setup_v1_file_key_via_subscribed_keyrings(struct fscrypt_info *ci) { + const struct super_block *sb = ci->ci_inode->i_sb; struct key *key; const struct fscrypt_key *payload; int err; @@ -306,8 +307,8 @@ int fscrypt_setup_v1_file_key_via_subscribed_keyrings(struct fscrypt_info *ci) key = find_and_lock_process_key(FSCRYPT_KEY_DESC_PREFIX, ci->ci_policy.v1.master_key_descriptor, ci->ci_mode->keysize, &payload); - if (key == ERR_PTR(-ENOKEY) && ci->ci_inode->i_sb->s_cop->key_prefix) { - key = find_and_lock_process_key(ci->ci_inode->i_sb->s_cop->key_prefix, + if (key == ERR_PTR(-ENOKEY) && sb->s_cop->legacy_key_prefix) { + key = find_and_lock_process_key(sb->s_cop->legacy_key_prefix, ci->ci_policy.v1.master_key_descriptor, ci->ci_mode->keysize, &payload); } |