[PATCH v8 06/17] hfs: Implement fileattr_get for case sensitivity
From: Chuck Lever <cel@kernel.org>
Date: 2026-02-17 21:48:01
Also in:
linux-cifs, linux-ext4, linux-f2fs-devel, linux-fsdevel, linux-nfs, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), hfs filesystem, the rest · Maintainers:
Alexander Viro, Christian Brauner, Viacheslav Dubeyko, John Paul Adrian Glaubitz, Yangtao Li, Linus Torvalds
From: Chuck Lever <redacted> Report HFS case sensitivity behavior via the FS_XFLAG_CASEFOLD flag. HFS is always case-insensitive (using Mac OS Roman case folding) and always preserves case at rest. Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Chuck Lever <redacted> --- fs/hfs/dir.c | 1 + fs/hfs/hfs_fs.h | 2 ++ fs/hfs/inode.c | 13 +++++++++++++ 3 files changed, 16 insertions(+)
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 0c615c078650..f85ef69a8375 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c@@ -328,4 +328,5 @@ const struct inode_operations hfs_dir_inode_operations = { .rmdir = hfs_remove, .rename = hfs_rename, .setattr = hfs_inode_setattr, + .fileattr_get = hfs_fileattr_get, };
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index ac0e83f77a0f..1b23448c9a48 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h@@ -177,6 +177,8 @@ extern int hfs_get_block(struct inode *inode, sector_t block, extern const struct address_space_operations hfs_aops; extern const struct address_space_operations hfs_btree_aops; +struct file_kattr; +int hfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa); int hfs_write_begin(const struct kiocb *iocb, struct address_space *mapping, loff_t pos, unsigned int len, struct folio **foliop, void **fsdata);
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 878535db64d6..b3e6e46ddd14 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c@@ -18,6 +18,7 @@ #include <linux/uio.h> #include <linux/xattr.h> #include <linux/blkdev.h> +#include <linux/fileattr.h> #include "hfs_fs.h" #include "btree.h"
@@ -716,6 +717,17 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end, return ret; } +int hfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa) +{ + /* + * Report case-insensitive behavior: all name comparisons use + * Mac OS Roman case folding. FS_XFLAG_CASENONPRESERVING remains + * unset because original case is preserved on disk. + */ + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; + return 0; +} + static const struct file_operations hfs_file_operations = { .llseek = generic_file_llseek, .read_iter = generic_file_read_iter,
@@ -732,4 +744,5 @@ static const struct inode_operations hfs_file_inode_operations = { .lookup = hfs_file_lookup, .setattr = hfs_inode_setattr, .listxattr = generic_listxattr, + .fileattr_get = hfs_fileattr_get, };
--
2.53.0