diff options
Diffstat (limited to 'usr/src/uts/common/sys/fs/pc_node.h')
| -rw-r--r-- | usr/src/uts/common/sys/fs/pc_node.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/fs/pc_node.h b/usr/src/uts/common/sys/fs/pc_node.h new file mode 100644 index 0000000000..f29e82b7b0 --- /dev/null +++ b/usr/src/uts/common/sys/fs/pc_node.h @@ -0,0 +1,147 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (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 1989, 1992, 1997-1998, 2000, 2003 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 pcnode *); +extern void pc_mark_acc(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); +extern int pc_rename(struct pcnode *, struct pcnode *, char *, char *); +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); +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 */ |