Commit 4596c8aa authored by OGAWA Hirofumi's avatar OGAWA Hirofumi Committed by Linus Torvalds
Browse files

fat: fix VFAT_IOCTL_READDIR_xxx and cleanup for userland 



"struct dirent" is a kernel type here, but is a **different type** in
userspace!  This means both the structure and the IOCTL number is wrong!

So, this adds new "struct __fat_dirent" to generate correct IOCTL number.
And kernel stuff moves to under __KERNEL__.

Signed-off-by: default avatarOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8d44d974

include/linux/msdos_fs.h

+27 −20
Original line number Diff line number Diff line
@@ -2,11 +2,11 @@ 
#define _LINUX_MSDOS_FS_H



#include <linux/magic.h>

#include <asm/byteorder.h>



/*

 * The MS-DOS filesystem constants/structures

 */

#include <asm/byteorder.h>



#define SECTOR_SIZE	512		/* sector size (bytes) */

#define SECTOR_BITS	9		/* log2(SECTOR_SIZE) */
@@ -89,24 +89,22 @@ 
#define IS_FSINFO(x)	(le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 \

			 && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2)



struct __fat_dirent {

	long		d_ino;

	__kernel_off_t	d_off;

	unsigned short	d_reclen;

	char		d_name[256]; /* We must not include limits.h! */

};



/*

 * ioctl commands

 */

#define VFAT_IOCTL_READDIR_BOTH		_IOR('r', 1, struct dirent [2])

#define VFAT_IOCTL_READDIR_SHORT	_IOR('r', 2, struct dirent [2])

#define VFAT_IOCTL_READDIR_BOTH		_IOR('r', 1, struct __fat_dirent[2])

#define VFAT_IOCTL_READDIR_SHORT	_IOR('r', 2, struct __fat_dirent[2])

/* <linux/videotext.h> has used 0x72 ('r') in collision, so skip a few */

#define FAT_IOCTL_GET_ATTRIBUTES	_IOR('r', 0x10, __u32)

#define FAT_IOCTL_SET_ATTRIBUTES	_IOW('r', 0x11, __u32)



/*

 * vfat shortname flags

 */

#define VFAT_SFN_DISPLAY_LOWER	0x0001 /* convert to lowercase for display */

#define VFAT_SFN_DISPLAY_WIN95	0x0002 /* emulate win95 rule for display */

#define VFAT_SFN_DISPLAY_WINNT	0x0004 /* emulate winnt rule for display */

#define VFAT_SFN_CREATE_WIN95	0x0100 /* emulate win95 rule for create */

#define VFAT_SFN_CREATE_WINNT	0x0200 /* emulate winnt rule for create */



struct fat_boot_sector {

	__u8	ignored[3];	/* Boot strap short or near jump */

	__u8	system_id[8];	/* Name - can be used to special case
@@ -168,14 +166,6 @@ struct msdos_dir_slot { 
	__u8    name11_12[4];	/* last 2 characters in name */

};



struct fat_slot_info {

	loff_t i_pos;		/* on-disk position of directory entry */

	loff_t slot_off;	/* offset for slot or de start */

	int nr_slots;		/* number of slots + 1(de) in filename */

	struct msdos_dir_entry *de;

	struct buffer_head *bh;

};



#ifdef __KERNEL__



#include <linux/buffer_head.h>
@@ -184,6 +174,15 @@ struct fat_slot_info { 
#include <linux/fs.h>

#include <linux/mutex.h>



/*

 * vfat shortname flags

 */

#define VFAT_SFN_DISPLAY_LOWER	0x0001 /* convert to lowercase for display */

#define VFAT_SFN_DISPLAY_WIN95	0x0002 /* emulate win95 rule for display */

#define VFAT_SFN_DISPLAY_WINNT	0x0004 /* emulate winnt rule for display */

#define VFAT_SFN_CREATE_WIN95	0x0100 /* emulate win95 rule for create */

#define VFAT_SFN_CREATE_WINNT	0x0200 /* emulate winnt rule for create */



struct fat_mount_options {

	uid_t fs_uid;

	gid_t fs_gid;
@@ -267,6 +266,14 @@ struct msdos_inode_info { 
	struct inode vfs_inode;

};



struct fat_slot_info {

	loff_t i_pos;		/* on-disk position of directory entry */

	loff_t slot_off;	/* offset for slot or de start */

	int nr_slots;		/* number of slots + 1(de) in filename */

	struct msdos_dir_entry *de;

	struct buffer_head *bh;

};



static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb)

{

	return sb->s_fs_info;

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