[thirdparty/xfsprogs-dev.git] / include / xfs_dir2_sf.h

/*
 * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 * 
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 * 
 * http://www.sgi.com 
 * 
 * For further information regarding this notice, see: 
 * 
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef __XFS_DIR2_SF_H__
#define	__XFS_DIR2_SF_H__

/*
 * Directory layout when stored internal to an inode.
 *
 * Small directories are packed as tightly as possible so as to
 * fit into the literal area of the inode.
 */

struct dirent;
struct uio;
struct xfs_dabuf;
struct xfs_da_args;
struct xfs_dir2_block;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;

/*
 * Maximum size of a shortform directory.
 */
#define	XFS_DIR2_SF_MAX_SIZE	\
	(XFS_DINODE_MAX_SIZE - (uint)sizeof(xfs_dinode_core_t) - \
	 (uint)sizeof(xfs_agino_t))

/*
 * Inode number stored as 8 8-bit values.
 */
typedef	struct { __uint8_t i[8]; } xfs_dir2_ino8_t;

#define	XFS_DIR2_SF_GET_INO8_ARCH(di,arch)	\
	(xfs_ino_t)(DIRINO_GET_ARCH(&di,arch))
#define	XFS_DIR2_SF_GET_INO8(di)	        \
        XFS_DIR2_SF_GET_INO8_ARCH(di,ARCH_NOCONVERT)

/*
 * Inode number stored as 4 8-bit values.
 * Works a lot of the time, when all the inode numbers in a directory
 * fit in 32 bits.
 */
typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t;
#define	XFS_DIR2_SF_GET_INO4_ARCH(di,arch)	\
	(xfs_ino_t)(DIRINO4_GET_ARCH(&di,arch))
#define	XFS_DIR2_SF_GET_INO4(di)	        \
	XFS_DIR2_SF_GET_INO4_ARCH(di,ARCH_NOCONVERT)

typedef union {
	xfs_dir2_ino8_t	i8;
	xfs_dir2_ino4_t	i4;
} xfs_dir2_inou_t;
#define	XFS_DIR2_MAX_SHORT_INUM	((xfs_ino_t)0xffffffffULL)

/*
 * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t.
 * Only need 16 bits, this is the byte offset into the single block form.
 */
typedef struct { __uint8_t i[2]; } xfs_dir2_sf_off_t;

/*
 * The parent directory has a dedicated field, and the self-pointer must
 * be calculated on the fly.
 *
 * Entries are packed toward the top as tightly as possible.  The header
 * and the elements must be bcopy()'d out into a work area to get correct
 * alignment for the inode number fields.
 */
typedef struct xfs_dir2_sf_hdr {
	__uint8_t		count;		/* count of entries */
	__uint8_t		i8count;	/* count of 8-byte inode #s */
	xfs_dir2_inou_t		parent;		/* parent dir inode number */
} xfs_dir2_sf_hdr_t;

typedef struct xfs_dir2_sf_entry {
	__uint8_t		namelen;	/* actual name length */
	xfs_dir2_sf_off_t	offset;		/* saved offset */
	__uint8_t		name[1];	/* name, variable size */
	xfs_dir2_inou_t		inumber;	/* inode number, var. offset */
} xfs_dir2_sf_entry_t;

typedef struct xfs_dir2_sf {
	xfs_dir2_sf_hdr_t	hdr;		/* shortform header */
	xfs_dir2_sf_entry_t	list[1];	/* shortform entries */
} xfs_dir2_sf_t;

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_HDR_SIZE)
int xfs_dir2_sf_hdr_size(int i8count);
#define	XFS_DIR2_SF_HDR_SIZE(i8count)	xfs_dir2_sf_hdr_size(i8count)
#else
#define	XFS_DIR2_SF_HDR_SIZE(i8count)	\
	((uint)sizeof(xfs_dir2_sf_hdr_t) - \
	 ((i8count) == 0) * \
	 ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_INUMBERP)
xfs_dir2_inou_t *xfs_dir2_sf_inumberp(xfs_dir2_sf_entry_t *sfep);
#define	XFS_DIR2_SF_INUMBERP(sfep)	xfs_dir2_sf_inumberp(sfep)
#else
#define	XFS_DIR2_SF_INUMBERP(sfep)	\
	((xfs_dir2_inou_t *)&(sfep)->name[(sfep)->namelen])
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_GET_INUMBER)
xfs_intino_t xfs_dir2_sf_get_inumber_arch(xfs_dir2_sf_t *sfp, xfs_dir2_inou_t *from, 
                                            xfs_arch_t arch);
#define	XFS_DIR2_SF_GET_INUMBER_ARCH(sfp, from, arch)	\
	xfs_dir2_sf_get_inumber_arch(sfp, from, arch)

#else
#define	XFS_DIR2_SF_GET_INUMBER_ARCH(sfp, from, arch)	\
	((sfp)->hdr.i8count == 0 ? \
		(xfs_intino_t)XFS_DIR2_SF_GET_INO4_ARCH(*(from), arch) : \
		(xfs_intino_t)XFS_DIR2_SF_GET_INO8_ARCH(*(from), arch))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_PUT_INUMBER)
void xfs_dir2_sf_put_inumber_arch(xfs_dir2_sf_t *sfp, xfs_ino_t *from,
			             xfs_dir2_inou_t *to, xfs_arch_t arch);
#define	XFS_DIR2_SF_PUT_INUMBER_ARCH(sfp,from,to,arch)	\
	xfs_dir2_sf_put_inumber_arch(sfp,from,to,arch)
#else
#define	XFS_DIR2_SF_PUT_INUMBER_ARCH(sfp,from,to,arch)	\
	if ((sfp)->hdr.i8count == 0) { \
            DIRINO4_COPY_ARCH(from,to,arch); \
        } else { \
            DIRINO_COPY_ARCH(from,to,arch); \
        }
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_GET_OFFSET)
xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset_arch(xfs_dir2_sf_entry_t *sfep, 
                                                    xfs_arch_t arch);
xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep);
#define	XFS_DIR2_SF_GET_OFFSET_ARCH(sfep,arch)	\
        xfs_dir2_sf_get_offset_arch(sfep,arch)
#else
#define	XFS_DIR2_SF_GET_OFFSET_ARCH(sfep,arch)	\
        INT_GET_UNALIGNED_16_ARCH(&(sfep)->offset.i,arch)
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_PUT_OFFSET)
void xfs_dir2_sf_put_offset_arch(xfs_dir2_sf_entry_t *sfep,
			            xfs_dir2_data_aoff_t off, xfs_arch_t arch);
#define	XFS_DIR2_SF_PUT_OFFSET_ARCH(sfep,off,arch) \
        xfs_dir2_sf_put_offset_arch(sfep,off,arch)
#else
#define	XFS_DIR2_SF_PUT_OFFSET_ARCH(sfep,off,arch)	\
        INT_SET_UNALIGNED_16_ARCH(&(sfep)->offset.i,off,arch)
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_ENTSIZE_BYNAME)
int xfs_dir2_sf_entsize_byname(xfs_dir2_sf_t *sfp, int len);
#define XFS_DIR2_SF_ENTSIZE_BYNAME(sfp,len)	\
	xfs_dir2_sf_entsize_byname(sfp,len)
#else
#define XFS_DIR2_SF_ENTSIZE_BYNAME(sfp,len)	/* space a name uses */ \
	((uint)sizeof(xfs_dir2_sf_entry_t) - 1 + (len) - \
	 ((sfp)->hdr.i8count == 0) * \
	 ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_ENTSIZE_BYENTRY)
int xfs_dir2_sf_entsize_byentry(xfs_dir2_sf_t *sfp, xfs_dir2_sf_entry_t *sfep);
#define XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep)	\
	xfs_dir2_sf_entsize_byentry(sfp,sfep)
#else
#define XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep)	/* space an entry uses */ \
	((uint)sizeof(xfs_dir2_sf_entry_t) - 1 + (sfep)->namelen - \
	 ((sfp)->hdr.i8count == 0) * \
	 ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_FIRSTENTRY)
xfs_dir2_sf_entry_t *xfs_dir2_sf_firstentry(xfs_dir2_sf_t *sfp);
#define XFS_DIR2_SF_FIRSTENTRY(sfp)	xfs_dir2_sf_firstentry(sfp)
#else
#define XFS_DIR2_SF_FIRSTENTRY(sfp)	/* first entry in struct */ \
	((xfs_dir2_sf_entry_t *) \
	 ((char *)(sfp) + XFS_DIR2_SF_HDR_SIZE(sfp->hdr.i8count)))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_NEXTENTRY)
xfs_dir2_sf_entry_t *xfs_dir2_sf_nextentry(xfs_dir2_sf_t *sfp,
					   xfs_dir2_sf_entry_t *sfep);
#define XFS_DIR2_SF_NEXTENTRY(sfp,sfep)		xfs_dir2_sf_nextentry(sfp,sfep)
#else
#define XFS_DIR2_SF_NEXTENTRY(sfp,sfep)		/* next entry in struct */ \
	((xfs_dir2_sf_entry_t *) \
		((char *)(sfep) + XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep)))
#endif

/*
 * Functions.
 */

extern int
	xfs_dir2_block_sfsize(struct xfs_inode *dp,
			      struct xfs_dir2_block *block,
			      xfs_dir2_sf_hdr_t *sfhp);

extern int
	xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_dabuf *bp,
			     int size, xfs_dir2_sf_hdr_t *sfhp);

extern int
	xfs_dir2_sf_addname(struct xfs_da_args *args);

extern int
	xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);

extern int
	xfs_dir2_sf_getdents(struct xfs_inode *dp, struct uio *uio, int *eofp,
			     struct xfs_dirent *dbp, xfs_dir2_put_t put);

extern int
	xfs_dir2_sf_lookup(struct xfs_da_args *args);

extern int
	xfs_dir2_sf_removename(struct xfs_da_args *args);

extern int
	xfs_dir2_sf_replace(struct xfs_da_args *args);

#endif	/* __XFS_DIR2_SF_H__ */
Commit	Line	Data
2bd0ea18	1	/*
0d3e0b37	2	* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
2bd0ea18 NS	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of version 2 of the GNU General Public License as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it would be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	11	*
	12	* Further, this software is distributed without any warranty that it is
	13	* free of the rightful claim of any third person regarding infringement
	14	* or the like. Any license provided herein, whether implied or
	15	* otherwise, applies only to this software file. Patent licenses, if
	16	* any, provided herein do not apply to combinations of this program with
	17	* other software, or any other product whatsoever.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write the Free Software Foundation, Inc., 59
	21	* Temple Place - Suite 330, Boston MA 02111-1307, USA.
	22	*
	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
	24	* Mountain View, CA 94043, or:
	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32	#ifndef __XFS_DIR2_SF_H__
	33	#define __XFS_DIR2_SF_H__
	34
	35	/*
	36	* Directory layout when stored internal to an inode.
	37	*
	38	* Small directories are packed as tightly as possible so as to
	39	* fit into the literal area of the inode.
	40	*/
	41
	42	struct dirent;
	43	struct uio;
	44	struct xfs_dabuf;
	45	struct xfs_da_args;
	46	struct xfs_dir2_block;
	47	struct xfs_inode;
	48	struct xfs_mount;
	49	struct xfs_trans;
	50
	51	/*
	52	* Maximum size of a shortform directory.
	53	*/
	54	#define XFS_DIR2_SF_MAX_SIZE \
	55	(XFS_DINODE_MAX_SIZE - (uint)sizeof(xfs_dinode_core_t) - \
	56	(uint)sizeof(xfs_agino_t))
	57
	58	/*
	59	* Inode number stored as 8 8-bit values.
	60	*/
	61	typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t;
	62
	63	#define XFS_DIR2_SF_GET_INO8_ARCH(di,arch) \
	64	(xfs_ino_t)(DIRINO_GET_ARCH(&di,arch))
	65	#define XFS_DIR2_SF_GET_INO8(di) \
	66	XFS_DIR2_SF_GET_INO8_ARCH(di,ARCH_NOCONVERT)
67
68	/*
69	* Inode number stored as 4 8-bit values.
70	* Works a lot of the time, when all the inode numbers in a directory
71	* fit in 32 bits.
72	*/
73	typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t;
74	#define XFS_DIR2_SF_GET_INO4_ARCH(di,arch) \
75	(xfs_ino_t)(DIRINO4_GET_ARCH(&di,arch))
76	#define XFS_DIR2_SF_GET_INO4(di) \
77	XFS_DIR2_SF_GET_INO4_ARCH(di,ARCH_NOCONVERT)
78
79	typedef union {
80	xfs_dir2_ino8_t i8;
81	xfs_dir2_ino4_t i4;
82	} xfs_dir2_inou_t;
83	#define XFS_DIR2_MAX_SHORT_INUM ((xfs_ino_t)0xffffffffULL)
84
85	/*
86	* Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t.
87	* Only need 16 bits, this is the byte offset into the single block form.
88	*/
89	typedef struct { __uint8_t i[2]; } xfs_dir2_sf_off_t;
90
91	/*
92	* The parent directory has a dedicated field, and the self-pointer must
93	* be calculated on the fly.
94	*
95	* Entries are packed toward the top as tightly as possible. The header
96	* and the elements must be bcopy()'d out into a work area to get correct
97	* alignment for the inode number fields.
98	*/
99	typedef struct xfs_dir2_sf_hdr {
100	__uint8_t count; /* count of entries */
101	__uint8_t i8count; /* count of 8-byte inode #s */
102	xfs_dir2_inou_t parent; /* parent dir inode number */
103	} xfs_dir2_sf_hdr_t;
104
105	typedef struct xfs_dir2_sf_entry {
106	__uint8_t namelen; /* actual name length */
107	xfs_dir2_sf_off_t offset; /* saved offset */
108	__uint8_t name[1]; /* name, variable size */
109	xfs_dir2_inou_t inumber; /* inode number, var. offset */
110	} xfs_dir2_sf_entry_t;
111
112	typedef struct xfs_dir2_sf {
113	xfs_dir2_sf_hdr_t hdr; /* shortform header */
114	xfs_dir2_sf_entry_t list[1]; /* shortform entries */
115	} xfs_dir2_sf_t;
116
117	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_HDR_SIZE)
118	int xfs_dir2_sf_hdr_size(int i8count);
119	#define XFS_DIR2_SF_HDR_SIZE(i8count) xfs_dir2_sf_hdr_size(i8count)
120	#else
121	#define XFS_DIR2_SF_HDR_SIZE(i8count) \
122	((uint)sizeof(xfs_dir2_sf_hdr_t) - \
123	((i8count) == 0) * \
124	((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
125	#endif
126
127	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_INUMBERP)
128	xfs_dir2_inou_t xfs_dir2_sf_inumberp(xfs_dir2_sf_entry_t sfep);
129	#define XFS_DIR2_SF_INUMBERP(sfep) xfs_dir2_sf_inumberp(sfep)
130	#else
131	#define XFS_DIR2_SF_INUMBERP(sfep) \
132	((xfs_dir2_inou_t *)&(sfep)->name[(sfep)->namelen])
133	#endif
134
135	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_GET_INUMBER)
136	xfs_intino_t xfs_dir2_sf_get_inumber_arch(xfs_dir2_sf_t sfp, xfs_dir2_inou_t from,
137	xfs_arch_t arch);
138	#define XFS_DIR2_SF_GET_INUMBER_ARCH(sfp, from, arch) \
139	xfs_dir2_sf_get_inumber_arch(sfp, from, arch)
140
141	#else
142	#define XFS_DIR2_SF_GET_INUMBER_ARCH(sfp, from, arch) \
143	((sfp)->hdr.i8count == 0 ? \
144	(xfs_intino_t)XFS_DIR2_SF_GET_INO4_ARCH(*(from), arch) : \
145	(xfs_intino_t)XFS_DIR2_SF_GET_INO8_ARCH(*(from), arch))
146	#endif
147
148	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_PUT_INUMBER)
149	void xfs_dir2_sf_put_inumber_arch(xfs_dir2_sf_t sfp, xfs_ino_t from,
150	xfs_dir2_inou_t *to, xfs_arch_t arch);
151	#define XFS_DIR2_SF_PUT_INUMBER_ARCH(sfp,from,to,arch) \
152	xfs_dir2_sf_put_inumber_arch(sfp,from,to,arch)
153	#else
154	#define XFS_DIR2_SF_PUT_INUMBER_ARCH(sfp,from,to,arch) \
155	if ((sfp)->hdr.i8count == 0) { \
156	DIRINO4_COPY_ARCH(from,to,arch); \
157	} else { \
158	DIRINO_COPY_ARCH(from,to,arch); \
159	}
160	#endif
161
162	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_GET_OFFSET)
163	xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset_arch(xfs_dir2_sf_entry_t *sfep,
164	xfs_arch_t arch);
165	xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep);
166	#define XFS_DIR2_SF_GET_OFFSET_ARCH(sfep,arch) \
167	xfs_dir2_sf_get_offset_arch(sfep,arch)
168	#else
169	#define XFS_DIR2_SF_GET_OFFSET_ARCH(sfep,arch) \
170	INT_GET_UNALIGNED_16_ARCH(&(sfep)->offset.i,arch)
171	#endif
172
173	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_PUT_OFFSET)
174	void xfs_dir2_sf_put_offset_arch(xfs_dir2_sf_entry_t *sfep,
175	xfs_dir2_data_aoff_t off, xfs_arch_t arch);
176	#define XFS_DIR2_SF_PUT_OFFSET_ARCH(sfep,off,arch) \
177	xfs_dir2_sf_put_offset_arch(sfep,off,arch)
178	#else
179	#define XFS_DIR2_SF_PUT_OFFSET_ARCH(sfep,off,arch) \
180	INT_SET_UNALIGNED_16_ARCH(&(sfep)->offset.i,off,arch)
181	#endif
182
183	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_ENTSIZE_BYNAME)
184	int xfs_dir2_sf_entsize_byname(xfs_dir2_sf_t *sfp, int len);
185	#define XFS_DIR2_SF_ENTSIZE_BYNAME(sfp,len) \
186	xfs_dir2_sf_entsize_byname(sfp,len)
187	#else
188	#define XFS_DIR2_SF_ENTSIZE_BYNAME(sfp,len) /* space a name uses */ \
189	((uint)sizeof(xfs_dir2_sf_entry_t) - 1 + (len) - \
190	((sfp)->hdr.i8count == 0) * \
191	((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
192	#endif
193
194	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_ENTSIZE_BYENTRY)
195	int xfs_dir2_sf_entsize_byentry(xfs_dir2_sf_t sfp, xfs_dir2_sf_entry_t sfep);
196	#define XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep) \
197	xfs_dir2_sf_entsize_byentry(sfp,sfep)
198	#else
199	#define XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep) /* space an entry uses */ \
200	((uint)sizeof(xfs_dir2_sf_entry_t) - 1 + (sfep)->namelen - \
201	((sfp)->hdr.i8count == 0) * \
202	((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)))
203	#endif
204
205	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_FIRSTENTRY)
206	xfs_dir2_sf_entry_t xfs_dir2_sf_firstentry(xfs_dir2_sf_t sfp);
207	#define XFS_DIR2_SF_FIRSTENTRY(sfp) xfs_dir2_sf_firstentry(sfp)
208	#else
209	#define XFS_DIR2_SF_FIRSTENTRY(sfp) /* first entry in struct */ \
210	((xfs_dir2_sf_entry_t *) \
211	((char *)(sfp) + XFS_DIR2_SF_HDR_SIZE(sfp->hdr.i8count)))
212	#endif
213
214	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_SF_NEXTENTRY)
215	xfs_dir2_sf_entry_t xfs_dir2_sf_nextentry(xfs_dir2_sf_t sfp,
216	xfs_dir2_sf_entry_t *sfep);
217	#define XFS_DIR2_SF_NEXTENTRY(sfp,sfep) xfs_dir2_sf_nextentry(sfp,sfep)
218	#else
219	#define XFS_DIR2_SF_NEXTENTRY(sfp,sfep) /* next entry in struct */ \
220	((xfs_dir2_sf_entry_t *) \
221	((char *)(sfep) + XFS_DIR2_SF_ENTSIZE_BYENTRY(sfp,sfep)))
222	#endif
223
224	/*
225	* Functions.
226	*/
227
228	extern int
229	xfs_dir2_block_sfsize(struct xfs_inode *dp,
230	struct xfs_dir2_block *block,
231	xfs_dir2_sf_hdr_t *sfhp);
232
233	extern int
234	xfs_dir2_block_to_sf(struct xfs_da_args args, struct xfs_dabuf bp,
235	int size, xfs_dir2_sf_hdr_t *sfhp);
236
237	extern int
238	xfs_dir2_sf_addname(struct xfs_da_args *args);
239
240	extern int
241	xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);
242
243	extern int
244	xfs_dir2_sf_getdents(struct xfs_inode dp, struct uio uio, int *eofp,
0e266570	245	struct xfs_dirent *dbp, xfs_dir2_put_t put);
2bd0ea18 NS	246
	247	extern int
	248	xfs_dir2_sf_lookup(struct xfs_da_args *args);
	249
	250	extern int
	251	xfs_dir2_sf_removename(struct xfs_da_args *args);
	252
	253	extern int
	254	xfs_dir2_sf_replace(struct xfs_da_args *args);
	255
	256	#endif /* __XFS_DIR2_SF_H__ */