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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef _SYS_FS_CACHEFS_DIR_H
     28 #define	_SYS_FS_CACHEFS_DIR_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/types.h>
     33 #include <sys/fs/cachefs_fs.h>
     34 
     35 #ifdef __cplusplus
     36 extern "C" {
     37 #endif
     38 
     39 /*
     40  * c_dirent is stored on disk, so it needs to be the same 32-bit vs. 64-bit.
     41  */
     42 
     43 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
     44 #pragma pack(4)
     45 #endif
     46 
     47 struct c_dirent {
     48 	uint_t		d_length;	/* entry length */
     49 	uint_t		d_flag;		/* entry flags */
     50 	cfs_cid_t	d_id;		/* file id */
     51 	offset_t	d_offset;	/* disk offset of this entry */
     52 	cfs_fid_t	d_cookie;	/* back fid */
     53 	ushort_t	d_namelen;	/* name length, without null */
     54 	char		d_name[1];	/* name */
     55 };
     56 
     57 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
     58 #pragma pack()
     59 #endif
     60 
     61 #define	C_DIRSIZ(dp) \
     62 	(((dp)->d_namelen + (uint_t)sizeof (struct c_dirent) + 7) & ~7)
     63 
     64 #define	CDE_SIZE(NM) \
     65 	((strlen(NM) + sizeof (struct c_dirent) + 7) & ~7)
     66 
     67 /*
     68  * Various flags stored in c_dirent flag field.
     69  */
     70 #define	CDE_VALID	0x1		/* entry is valid */
     71 #define	CDE_COMPLETE	0x2		/* entry is complete */
     72 
     73 
     74 #if defined(_KERNEL) && defined(__STDC__)
     75 int cachefs_dir_look(cnode_t *dcp, char *nm, fid_t *cookiep, uint_t *flagp,
     76     u_offset_t *d_offsetp, cfs_cid_t *cidp);
     77 int cachefs_dir_new(cnode_t *dcp, cnode_t *cp);
     78 int cachefs_dir_enter(cnode_t *dcp, char *nm, fid_t *cookiep, cfs_cid_t *cidp,
     79     int issync);
     80 int cachefs_dir_rmentry(cnode_t *dcp, char *nm);
     81 void cachefs_dir_modentry(cnode_t *dcp, u_offset_t offset, fid_t *cookiep,
     82     cfs_cid_t *cidp);
     83 int cachefs_dir_read(struct cnode *dcp, struct uio *uiop, int *eofp);
     84 int cachefs_dir_fill(cnode_t *dcp, cred_t *cr);
     85 int cachefs_dir_empty(cnode_t *dcp);
     86 int cachefs_async_populate_dir(struct cachefs_populate_req *, cred_t *,
     87     vnode_t *, vnode_t *);
     88 
     89 #endif /* defined(_KERNEL) && defined(__STDC__) */
     90 
     91 #ifdef __cplusplus
     92 }
     93 #endif
     94 
     95 #endif /* _SYS_FS_CACHEFS_DIR_H */
     96