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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_FS_PC_NODE_H
#define _SYS_FS_PC_NODE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <vm/page.h>
#include <sys/buf.h>
#include <sys/vnode.h>
/*
* This overlays the fid structure (see vfs.h)
*
* 10 bytes max.
*/
struct pc_fid {
ushort_t pcfid_len;
uint32_t pcfid_block; /* dblock containing directory entry */
uint16_t pcfid_offset; /* offset within block of entry */
uint16_t pcfid_ctime; /* creation time of entry (~= i_gen) */
};
struct pcnode {
struct pcnode *pc_forw; /* active list ptrs, must be first */
struct pcnode *pc_back;
int pc_flags; /* see below */
struct vnode *pc_vn; /* vnode for pcnode */
uint_t pc_size; /* size of file */
pc_cluster32_t pc_scluster; /* starting cluster of file */
daddr_t pc_eblkno; /* disk blkno for entry */
int pc_eoffset; /* offset in disk block of entry */
struct pcdir pc_entry; /* directory entry of file */
pc_cluster32_t pc_lcluster; /* last cluster visited */
daddr_t pc_lindex; /* index of last cluster visited */
};
/*
* flags
*/
#define PC_MOD 0x01 /* file data has been modified */
#define PC_CHG 0x02 /* node data has been changed */
#define PC_INVAL 0x04 /* node is invalid */
#define PC_EXTERNAL 0x08 /* vnode ref is held externally */
#define PC_ACC 0x10 /* file data has been accessed */
#define PC_RELEHOLD 0x80 /* node is being released */
#define PCTOV(PCP) ((PCP)->pc_vn)
#define VTOPC(VP) ((struct pcnode *)((VP)->v_data))
/*
* Make a unique integer for a file
*/
#define pc_makenodeid(BN, OFF, ATTR, SCLUSTER, ENTPS) \
(ino_t)((ATTR) & PCA_DIR ? \
(uint32_t)(-(SCLUSTER) - 1) : \
((BN) * (ENTPS)) + ((OFF) / sizeof (struct pcdir)))
#define NPCHASH 1
#if NPCHASH == 1
#define PCFHASH(FSP, BN, O) 0
#define PCDHASH(FSP, SC) 0
#else
#define PCFHASH(FSP, BN, O) (((unsigned)FSP + BN + O) % NPCHASH)
#define PCDHASH(FSP, SC) (((unsigned)FSP + SC) % NPCHASH)
#endif
struct pchead {
struct pcnode *pch_forw;
struct pcnode *pch_back;
};
/*
* pcnode file and directory operations vectors
*/
extern struct vnodeops *pcfs_fvnodeops;
extern struct vnodeops *pcfs_dvnodeops;
extern const struct fs_operation_def pcfs_fvnodeops_template[];
extern const struct fs_operation_def pcfs_dvnodeops_template[];
extern struct pchead pcfhead[];
extern struct pchead pcdhead[];
/*
* pcnode routines
*/
extern void pc_init(void);
extern struct pcnode *pc_getnode(struct pcfs *, daddr_t, int, struct pcdir *);
extern void pc_rele(struct pcnode *);
extern void pc_mark_mod(struct pcfs *, struct pcnode *);
extern void pc_mark_acc(struct pcfs *, struct pcnode *);
extern int pc_nodesync(struct pcnode *);
extern int pc_nodeupdate(struct pcnode *);
extern int pc_bmap(struct pcnode *, daddr_t, daddr_t *, uint_t *);
extern int pc_balloc(struct pcnode *, daddr_t, int, daddr_t *);
extern int pc_bfree(struct pcnode *, pc_cluster32_t);
extern int pc_verify(struct pcfs *);
extern void pc_diskchanged(struct pcfs *);
extern void pc_mark_irrecov(struct pcfs *);
extern int pc_dirlook(struct pcnode *, char *, struct pcnode **);
extern int pc_direnter(struct pcnode *, char *, struct vattr *,
struct pcnode **);
extern int pc_dirremove(struct pcnode *, char *, struct vnode *, enum vtype,
caller_context_t *);
extern int pc_rename(struct pcnode *, struct pcnode *, char *, char *,
caller_context_t *);
extern int pc_blkatoff(struct pcnode *, offset_t, struct buf **,
struct pcdir **);
extern int pc_truncate(struct pcnode *, uint_t);
extern int pc_fileclsize(struct pcfs *, pc_cluster32_t, pc_cluster32_t *);
extern int pcfs_putapage(struct vnode *, page_t *, u_offset_t *, size_t *, int,
struct cred *);
extern void pc_badfs(struct pcfs *);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FS_PC_NODE_H */
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