From: Chuck Lever <[email protected]> Report FAT's case sensitivity behavior via the file_kattr boolean fields. FAT filesystems are case-insensitive by default.
MSDOS supports a 'nocase' mount option that enables case-sensitive behavior; check this option when reporting case sensitivity. VFAT long filename entries preserve case; without VFAT, only uppercased 8.3 short names are stored. Check the isvfat option when reporting case preservation. Signed-off-by: Chuck Lever <[email protected]> --- fs/fat/fat.h | 3 +++ fs/fat/file.c | 19 +++++++++++++++++++ fs/fat/namei_msdos.c | 1 + fs/fat/namei_vfat.c | 1 + 4 files changed, 24 insertions(+) diff --git a/fs/fat/fat.h b/fs/fat/fat.h index d3e426de5f01..9e208eeb46c4 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -10,6 +10,8 @@ #include <linux/fs_context.h> #include <linux/fs_parser.h> +struct file_kattr; + /* * vfat shortname flags */ @@ -407,6 +409,7 @@ extern void fat_truncate_blocks(struct inode *inode, loff_t offset); extern int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags); +int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa); extern int fat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); diff --git a/fs/fat/file.c b/fs/fat/file.c index 4fc49a614fb8..655b0a650149 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -16,6 +16,7 @@ #include <linux/fsnotify.h> #include <linux/security.h> #include <linux/falloc.h> +#include <linux/fileattr.h> #include "fat.h" static long fat_fallocate(struct file *file, int mode, @@ -395,6 +396,23 @@ void fat_truncate_blocks(struct inode *inode, loff_t offset) fat_flush_inodes(inode->i_sb, inode, NULL); } +int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa) +{ + struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb); + + /* + * FAT filesystems are case-insensitive by default. MSDOS + * supports a 'nocase' mount option for case-sensitive behavior. + * + * VFAT long filename entries preserve case. Without VFAT, only + * uppercased 8.3 short names are stored. + */ + fa->case_insensitive = !sbi->options.nocase; + fa->case_nonpreserving = !sbi->options.isvfat; + return 0; +} +EXPORT_SYMBOL_GPL(fat_fileattr_get); + int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags) { @@ -574,5 +592,6 @@ EXPORT_SYMBOL_GPL(fat_setattr); const struct inode_operations fat_file_inode_operations = { .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 0b920ee40a7f..380add5c6c66 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -640,6 +640,7 @@ static const struct inode_operations msdos_dir_inode_operations = { .rename = msdos_rename, .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 5dbc4cbb8fce..6cf513f97afa 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -1180,6 +1180,7 @@ static const struct inode_operations vfat_dir_inode_operations = { .rename = vfat_rename2, .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; -- 2.52.0 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
