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efs_inode.h revision 1.1 
      1 /*	$NetBSD: efs_inode.h,v 1.1 2007/06/29 23:30:29 rumble Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2006 Stephen M. Rumble <rumble (at) ephemeral.org>
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #ifndef _FS_EFS_EFS_INODE_H_
     20 #define _FS_EFS_EFS_INODE_H_
     21 
     22 #include <fs/efs/efs_subr.h>
     23 
     24 /*
     25  * The efs_inode structure represents an in-core inode. It contains meta-data
     26  * corresponding directly to the efs_dinode structure in host byte order and
     27  * with native NetBSD flags and fields, a copy of the on-disk dinode structure,
     28  * as well as other bookkeeping information.
     29  */
     30 struct efs_inode {
     31 	struct genfs_node	ei_gnode;
     32 	struct lockf	       *ei_lockf;	/* advisory lock */
     33 	ino_t			ei_number;	/* inode number */
     34 	dev_t			ei_dev;		/* associated device */
     35 	struct vnode	       *ei_vp;		/* associated vnode */
     36 	LIST_ENTRY(efs_inode)	ei_hash;	/* inode hash chain */
     37 
     38 	/*
     39 	 * Host-ordered on-disk fields with native NetBSD types and flags.
     40 	 */
     41 	uint16_t        	ei_mode;        /* file type and permissions */
     42 	int16_t         	ei_nlink;       /* link count (minimum 2) */
     43 	uid_t			ei_uid;         /* user ID */
     44 	gid_t			ei_gid;         /* group ID */
     45 	int32_t         	ei_size;        /* file size (in bytes) */
     46 	time_t          	ei_atime;       /* file access time */
     47 	time_t          	ei_mtime;       /* file modification time */
     48 	time_t          	ei_ctime;       /* inode modification time */
     49 	int32_t         	ei_gen;         /* inode generation number */
     50 	int16_t         	ei_numextents;  /* number of extents in file */
     51 	uint8_t         	ei_version;     /* inode version */
     52 
     53 	/*
     54 	 * Copy of the on-disk inode structure, in EFS native format and
     55 	 * endianness.
     56 	 */
     57 	struct efs_dinode 	ei_di;
     58 };
     59 
     60 #define EFS_VTOI(vp)	((struct efs_inode *)(vp)->v_data)
     61 #define EFS_ITOV(eip)	((struct vnode *)(eip)->ei_vp)
     62 
     63 /*
     64  * File handle. The first two fields must match struct fid (see sys/fstypes.h).
     65  */
     66 struct efs_fid {
     67 	unsigned short	ef_len;			/* length of data in bytes */
     68 	unsigned short	ef_pad;			/* compat: historic align */
     69 	int32_t		ef_ino;			/* inode number */
     70 	int32_t		ef_gen;			/* inode generation number */
     71 };
     72 
     73 #endif /* !_FS_EFS_EFS_INODE_H_ */
     74