[linux-2.6-block.git] / fs / gfs2 / inode.h

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License version 2.
 */

#ifndef __INODE_DOT_H__
#define __INODE_DOT_H__

#include "util.h"

static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
{
	return !ip->i_height;
}

static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
{
	return ip->i_di.di_flags & GFS2_DIF_JDATA;
}

static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
{
	const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
	return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
}

static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
{
	const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
	return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
}

static inline int gfs2_is_dir(const struct gfs2_inode *ip)
{
	return S_ISDIR(ip->i_inode.i_mode);
}

static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
{
	inode->i_blocks = blocks <<
		(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
}

static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
{
	return inode->i_blocks >>
		(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
}

static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
{
	gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
	change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
	inode->i_blocks += change;
}

static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
				  u64 no_formal_ino)
{
	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
}

static inline void gfs2_inum_out(const struct gfs2_inode *ip,
				 struct gfs2_dirent *dent)
{
	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
}


void gfs2_set_iop(struct inode *inode);
struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, 
				u64 no_addr, u64 no_formal_ino,
				int skip_freeing);
struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);

int gfs2_inode_refresh(struct gfs2_inode *ip);

int gfs2_dinode_dealloc(struct gfs2_inode *inode);
int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
			   int is_root);
struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
			   unsigned int mode, dev_t dev);
int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
		struct gfs2_inode *ip);
int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
		   const struct gfs2_inode *ip);
int gfs2_permission(struct inode *inode, int mask);
int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
void gfs2_dinode_print(const struct gfs2_inode *ip);

#endif /* __INODE_DOT_H__ */
Commit	Line	Data
b3b94faa DT	1	/*
b3b94faa DT	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3a8a9a10	3	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
b3b94faa DT	4	*
	5	* This copyrighted material is made available to anyone wishing to use,
	6	* modify, copy, or redistribute it subject to the terms and conditions
e9fc2aa0	7	* of the GNU General Public License version 2.
b3b94faa DT	8	*/
	9
	10	#ifndef __INODE_DOT_H__
	11	#define __INODE_DOT_H__
	12
77658aad SW	13	#include "util.h"
77658aad SW	14
dbb7cae2	15	static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
b3b94faa	16	{
ecc30c79	17	return !ip->i_height;
b3b94faa DT	18	}
b3b94faa DT	19
dbb7cae2	20	static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
b3b94faa DT	21	{
	22	return ip->i_di.di_flags & GFS2_DIF_JDATA;
	23	}
	24
bf36a713 SW	25	static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
	26	{
	27	const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
	28	return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
	29	}
	30
5561093e SW	31	static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
	32	{
	33	const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
	34	return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
	35	}
	36
dbb7cae2	37	static inline int gfs2_is_dir(const struct gfs2_inode *ip)
18ec7d5c	38	{
b60623c2	39	return S_ISDIR(ip->i_inode.i_mode);
18ec7d5c SW	40	}
18ec7d5c SW	41
77658aad SW	42	static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
	43	{
	44	inode->i_blocks = blocks <<
	45	(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
	46	}
	47
	48	static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
9e2dbdac	49	{
77658aad	50	return inode->i_blocks >>
9e2dbdac SW	51	(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
	52	}
	53
77658aad SW	54	static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
	55	{
	56	gfs2_assert(GFS2_SB(inode), (change >= 0 \|\| inode->i_blocks > -change));
	57	change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
	58	inode->i_blocks += change;
	59	}
	60
dbb7cae2 SW	61	static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
	62	u64 no_formal_ino)
	63	{
	64	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
	65	}
	66
bb8d8a6f SW	67	static inline void gfs2_inum_out(const struct gfs2_inode *ip,
	68	struct gfs2_dirent *dent)
	69	{
	70	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
	71	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
	72	}
	73
	74
35dcc52e	75	void gfs2_set_iop(struct inode *inode);
bb9bcf06	76	struct inode gfs2_inode_lookup(struct super_block sb, unsigned type,
7a9f53b3 BM	77	u64 no_addr, u64 no_formal_ino,
7a9f53b3 BM	78	int skip_freeing);
dbb7cae2	79	struct inode gfs2_ilookup(struct super_block sb, u64 no_addr);
b3b94faa	80
b3b94faa DT	81	int gfs2_inode_refresh(struct gfs2_inode *ip);
b3b94faa DT	82
feaa7bba	83	int gfs2_dinode_dealloc(struct gfs2_inode *inode);
b3b94faa	84	int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
907b9bce	85	struct inode gfs2_lookupi(struct inode dir, const struct qstr *name,
a569c711	86	int is_root);
feaa7bba	87	struct inode gfs2_createi(struct gfs2_holder ghs, const struct qstr *name,
e7f14f4d	88	unsigned int mode, dev_t dev);
feaa7bba SW	89	int gfs2_rmdiri(struct gfs2_inode dip, const struct qstr name,
	90	struct gfs2_inode *ip);
	91	int gfs2_unlink_ok(struct gfs2_inode dip, const struct qstr name,
dbb7cae2	92	const struct gfs2_inode *ip);
f58ba889	93	int gfs2_permission(struct inode *inode, int mask);
b3b94faa	94	int gfs2_readlinki(struct gfs2_inode ip, char buf, unsigned int len);
b3b94faa	95	int gfs2_setattr_simple(struct gfs2_inode ip, struct iattr attr);
c752666c	96	struct inode gfs2_lookup_simple(struct inode dip, const char *name);
bb8d8a6f SW	97	void gfs2_dinode_out(const struct gfs2_inode ip, void buf);
bb8d8a6f SW	98	void gfs2_dinode_print(const struct gfs2_inode *ip);
b3b94faa DT	99
	100	#endif /* __INODE_DOT_H__ */
	101