Re: [PATCH v4 02/16] fat: Implement fileattr_get for case sensitivity

[OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>]

Chuck Lever <cel@kernel.org> writes:

> +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);

Hm, if "nocase" option is specified for msdos, it would be the case
preserving (ignores/breaks the spec though).

I.e. on msdos mount with "nocase" works like the following

    $ touch aAa.txT
    $ ls
    aAa.txT

Thanks.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>