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 1989, 1992, 1997-1998, 2000, 2003 Sun Microsystems, Inc. 24 * All rights reserved. Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_FS_PC_NODE_H 28 #define _SYS_FS_PC_NODE_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include <vm/page.h> 37 #include <sys/buf.h> 38 #include <sys/vnode.h> 39 40 /* 41 * This overlays the fid structure (see vfs.h) 42 * 43 * 10 bytes max. 44 */ 45 struct pc_fid { 46 ushort_t pcfid_len; 47 uint32_t pcfid_block; /* dblock containing directory entry */ 48 uint16_t pcfid_offset; /* offset within block of entry */ 49 uint16_t pcfid_ctime; /* creation time of entry (~= i_gen) */ 50 }; 51 52 struct pcnode { 53 struct pcnode *pc_forw; /* active list ptrs, must be first */ 54 struct pcnode *pc_back; 55 int pc_flags; /* see below */ 56 struct vnode *pc_vn; /* vnode for pcnode */ 57 uint_t pc_size; /* size of file */ 58 pc_cluster32_t pc_scluster; /* starting cluster of file */ 59 daddr_t pc_eblkno; /* disk blkno for entry */ 60 int pc_eoffset; /* offset in disk block of entry */ 61 struct pcdir pc_entry; /* directory entry of file */ 62 pc_cluster32_t pc_lcluster; /* last cluster visited */ 63 daddr_t pc_lindex; /* index of last cluster visited */ 64 }; 65 66 /* 67 * flags 68 */ 69 #define PC_MOD 0x01 /* file data has been modified */ 70 #define PC_CHG 0x02 /* node data has been changed */ 71 #define PC_INVAL 0x04 /* node is invalid */ 72 #define PC_EXTERNAL 0x08 /* vnode ref is held externally */ 73 #define PC_ACC 0x10 /* file data has been accessed */ 74 #define PC_RELEHOLD 0x80 /* node is being released */ 75 76 #define PCTOV(PCP) ((PCP)->pc_vn) 77 #define VTOPC(VP) ((struct pcnode *)((VP)->v_data)) 78 79 /* 80 * Make a unique integer for a file 81 */ 82 #define pc_makenodeid(BN, OFF, ATTR, SCLUSTER, ENTPS) \ 83 (ino_t)((ATTR) & PCA_DIR ? \ 84 (uint32_t)(-(SCLUSTER) - 1) : \ 85 ((BN) * (ENTPS)) + ((OFF) / sizeof (struct pcdir))) 86 87 #define NPCHASH 1 88 89 #if NPCHASH == 1 90 #define PCFHASH(FSP, BN, O) 0 91 #define PCDHASH(FSP, SC) 0 92 #else 93 #define PCFHASH(FSP, BN, O) (((unsigned)FSP + BN + O) % NPCHASH) 94 #define PCDHASH(FSP, SC) (((unsigned)FSP + SC) % NPCHASH) 95 #endif 96 97 struct pchead { 98 struct pcnode *pch_forw; 99 struct pcnode *pch_back; 100 }; 101 102 /* 103 * pcnode file and directory operations vectors 104 */ 105 extern struct vnodeops *pcfs_fvnodeops; 106 extern struct vnodeops *pcfs_dvnodeops; 107 extern const struct fs_operation_def pcfs_fvnodeops_template[]; 108 extern const struct fs_operation_def pcfs_dvnodeops_template[]; 109 extern struct pchead pcfhead[]; 110 extern struct pchead pcdhead[]; 111 112 /* 113 * pcnode routines 114 */ 115 extern void pc_init(void); 116 extern struct pcnode *pc_getnode(struct pcfs *, daddr_t, int, struct pcdir *); 117 extern void pc_rele(struct pcnode *); 118 extern void pc_mark_mod(struct pcnode *); 119 extern void pc_mark_acc(struct pcnode *); 120 extern int pc_nodesync(struct pcnode *); 121 extern int pc_nodeupdate(struct pcnode *); 122 extern int pc_bmap(struct pcnode *, daddr_t, daddr_t *, uint_t *); 123 124 extern int pc_balloc(struct pcnode *, daddr_t, int, daddr_t *); 125 extern int pc_bfree(struct pcnode *, pc_cluster32_t); 126 extern int pc_verify(struct pcfs *); 127 extern void pc_diskchanged(struct pcfs *); 128 extern void pc_mark_irrecov(struct pcfs *); 129 130 extern int pc_dirlook(struct pcnode *, char *, struct pcnode **); 131 extern int pc_direnter(struct pcnode *, char *, struct vattr *, 132 struct pcnode **); 133 extern int pc_dirremove(struct pcnode *, char *, struct vnode *, enum vtype); 134 extern int pc_rename(struct pcnode *, struct pcnode *, char *, char *); 135 extern int pc_blkatoff(struct pcnode *, offset_t, struct buf **, 136 struct pcdir **); 137 extern int pc_truncate(struct pcnode *, uint_t); 138 extern int pc_fileclsize(struct pcfs *, pc_cluster32_t); 139 extern int pcfs_putapage(struct vnode *, page_t *, u_offset_t *, size_t *, int, 140 struct cred *); 141 extern void pc_badfs(struct pcfs *); 142 143 #ifdef __cplusplus 144 } 145 #endif 146 147 #endif /* _SYS_FS_PC_NODE_H */ 148