#ifndef _DX_TAG_H
#define _DX_TAG_H


#define DX_TAG(in)	(IS_TAGGED(in))


#ifdef CONFIG_DX_TAG_NFSD
#define DX_TAG_NFSD	1
#else
#define DX_TAG_NFSD	0
#endif


#ifdef CONFIG_TAGGING_NONE

#define MAX_UID		0xFFFFFFFF
#define MAX_GID		0xFFFFFFFF

#define INOTAG_TAG(cond, uid, gid, tag)	(0)

#define TAGINO_UID(cond, uid, tag)	(uid)
#define TAGINO_GID(cond, gid, tag)	(gid)

#endif


#ifdef CONFIG_TAGGING_GID16

#define MAX_UID		0xFFFFFFFF
#define MAX_GID		0x0000FFFF

#define INOTAG_TAG(cond, uid, gid, tag)	\
	((cond) ? (((gid) >> 16) & 0xFFFF) : 0)

#define TAGINO_UID(cond, uid, tag)	(uid)
#define TAGINO_GID(cond, gid, tag)	\
	((cond) ? (((gid) & 0xFFFF) | ((tag) << 16)) : (gid))

#endif


#ifdef CONFIG_TAGGING_ID24

#define MAX_UID		0x00FFFFFF
#define MAX_GID		0x00FFFFFF

#define INOTAG_TAG(cond, uid, gid, tag)	\
	((cond) ? ((((uid) >> 16) & 0xFF00) | (((gid) >> 24) & 0xFF)) : 0)

#define TAGINO_UID(cond, uid, tag)	\
	((cond) ? (((uid) & 0xFFFFFF) | (((tag) & 0xFF00) << 16)) : (uid))
#define TAGINO_GID(cond, gid, tag)	\
	((cond) ? (((gid) & 0xFFFFFF) | (((tag) & 0x00FF) << 24)) : (gid))

#endif


#ifdef CONFIG_TAGGING_UID16

#define MAX_UID		0x0000FFFF
#define MAX_GID		0xFFFFFFFF

#define INOTAG_TAG(cond, uid, gid, tag)	\
	((cond) ? (((uid) >> 16) & 0xFFFF) : 0)

#define TAGINO_UID(cond, uid, tag)	\
	((cond) ? (((uid) & 0xFFFF) | ((tag) << 16)) : (uid))
#define TAGINO_GID(cond, gid, tag)	(gid)

#endif


#ifdef CONFIG_TAGGING_INTERN

#define MAX_UID		0xFFFFFFFF
#define MAX_GID		0xFFFFFFFF

#define INOTAG_TAG(cond, uid, gid, tag)	\
	((cond) ? (tag) : 0)

#define TAGINO_UID(cond, uid, tag)	(uid)
#define TAGINO_GID(cond, gid, tag)	(gid)

#endif


#ifndef CONFIG_TAGGING_NONE
#define dx_current_fstag(sb)	\
	((sb)->s_flags & MS_TAGGED ? dx_current_tag(): 0)
#else
#define dx_current_fstag(sb)	(0)
#endif

#ifndef CONFIG_TAGGING_INTERN
#define TAGINO_TAG(cond, tag)	(0)
#else
#define TAGINO_TAG(cond, tag)	((cond) ? (tag) : 0)
#endif

#define INOTAG_UID(cond, uid, gid)	\
	((cond) ? ((uid) & MAX_UID) : (uid))
#define INOTAG_GID(cond, uid, gid)	\
	((cond) ? ((gid) & MAX_GID) : (gid))


static inline uid_t dx_map_uid(uid_t uid)
{
	if ((uid > MAX_UID) && (uid != -1))
		uid = -2;
	return (uid & MAX_UID);
}

static inline gid_t dx_map_gid(gid_t gid)
{
	if ((gid > MAX_GID) && (gid != -1))
		gid = -2;
	return (gid & MAX_GID);
}


#ifdef	CONFIG_VSERVER_LEGACY
#define FIOC_GETTAG	_IOR('x', 1, long)
#define FIOC_SETTAG	_IOW('x', 2, long)
#define FIOC_SETTAGJ	_IOW('x', 3, long)
#endif

#ifdef	CONFIG_PROPAGATE

int dx_parse_tag(char *string, tag_t *tag, int remove);

void __dx_propagate_tag(struct nameidata *nd, struct inode *inode);

#define dx_propagate_tag(n,i)	__dx_propagate_tag(n,i)

#else
#define dx_propagate_tag(n,i)	do { } while (0)
#endif

#endif /* _DX_TAG_H */