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ecryptfs: show filename encryption options

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ecryptfs_show_options() prints most user-visible mount options but
omits the filename encryption cipher and key size.

Print ecryptfs_fn_cipher and ecryptfs_fn_key_bytes when filename
encryption is enabled so that the displayed mount options reflect the
active filename encryption settings.

Fixes: 87c94c4df0 ("eCryptfs: Filename Encryption: mount option")
Cc: <stable@vger.kernel.org>
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
This commit is contained in:
Yichong Chen
2026-07-20 22:12:46 -05:00
committed by Tyler Hicks
parent 95540462e6
commit 496ec2d085
1 changed files with 7 additions and 0 deletions
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fs/ecryptfs/super.c
+7
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@@ -150,6 +150,13 @@ static int ecryptfs_show_options(struct seq_file *m, struct dentry *root)
if (mount_crypt_stat->global_default_cipher_key_size)
seq_printf(m, ",ecryptfs_key_bytes=%zd",
mount_crypt_stat->global_default_cipher_key_size);
if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) {
seq_printf(m, ",ecryptfs_fn_cipher=%s",
mount_crypt_stat->global_default_fn_cipher_name);
if (mount_crypt_stat->global_default_fn_cipher_key_bytes)
seq_printf(m, ",ecryptfs_fn_key_bytes=%zd",
mount_crypt_stat->global_default_fn_cipher_key_bytes);
}
if (mount_crypt_stat->flags & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)
seq_printf(m, ",ecryptfs_passthrough");
if (mount_crypt_stat->flags & ECRYPTFS_XATTR_METADATA_ENABLED)