diff options
| author | Gabriel Krisman Bertazi <krisman@suse.de> | 2024-02-21 12:14:08 -0500 |
|---|---|---|
| committer | Gabriel Krisman Bertazi <krisman@suse.de> | 2024-02-27 16:55:34 -0500 |
| commit | 70dfe3f0d239c2e8abc6a7bea24411031f85b652 (patch) | |
| tree | e3ec8120884b9c412c92017300b564009e3aaa1d /fs/libfs.c | |
| parent | e6ca2883d987a31051b39c18b16c39e7ce3a2cc0 (diff) | |
libfs: Add helper to choose dentry operations at mount-time
In preparation to drop the similar helper that sets d_op at lookup time,
add a version to set the right d_op filesystem-wide, through sb->s_d_op.
The operations structures are shared across filesystems supporting
fscrypt and/or casefolding, therefore we can keep it in common libfs
code.
Reviewed-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240221171412.10710-7-krisman@suse.de
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Diffstat (limited to 'fs/libfs.c')
| -rw-r--r-- | fs/libfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 3993453c9787..c9d85f525ae8 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -1819,6 +1819,34 @@ void generic_set_encrypted_ci_d_ops(struct dentry *dentry) EXPORT_SYMBOL(generic_set_encrypted_ci_d_ops); /** + * generic_set_sb_d_ops - helper for choosing the set of + * filesystem-wide dentry operations for the enabled features + * @sb: superblock to be configured + * + * Filesystems supporting casefolding and/or fscrypt can call this + * helper at mount-time to configure sb->s_d_op to best set of dentry + * operations required for the enabled features. The helper must be + * called after these have been configured, but before the root dentry + * is created. + */ +void generic_set_sb_d_ops(struct super_block *sb) +{ +#if IS_ENABLED(CONFIG_UNICODE) + if (sb->s_encoding) { + sb->s_d_op = &generic_ci_dentry_ops; + return; + } +#endif +#ifdef CONFIG_FS_ENCRYPTION + if (sb->s_cop) { + sb->s_d_op = &generic_encrypted_dentry_ops; + return; + } +#endif +} +EXPORT_SYMBOL(generic_set_sb_d_ops); + +/** * inode_maybe_inc_iversion - increments i_version * @inode: inode with the i_version that should be updated * @force: increment the counter even if it's not necessary? |