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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_FS_PC_NODE_H 27 #define _SYS_FS_PC_NODE_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <vm/page.h> 36 #include <sys/buf.h> 37 #include <sys/vnode.h> 38 39 /* 40 * This overlays the fid structure (see vfs.h) 41 * 42 * 10 bytes max. 43 */ 44 struct pc_fid { 45 ushort_t pcfid_len; 46 uint32_t pcfid_block; /* dblock containing directory entry */ 47 uint16_t pcfid_offset; /* offset within block of entry */ 48 uint16_t pcfid_ctime; /* creation time of entry (~= i_gen) */ 49 }; 50 51 struct pcnode { 52 struct pcnode *pc_forw; /* active list ptrs, must be first */ 53 struct pcnode *pc_back; 54 int pc_flags; /* see below */ 55 struct vnode *pc_vn; /* vnode for pcnode */ 56 uint_t pc_size; /* size of file */ 57 pc_cluster32_t pc_scluster; /* starting cluster of file */ 58 daddr_t pc_eblkno; /* disk blkno for entry */ 59 int pc_eoffset; /* offset in disk block of entry */ 60 struct pcdir pc_entry; /* directory entry of file */ 61 pc_cluster32_t pc_lcluster; /* last cluster visited */ 62 daddr_t pc_lindex; /* index of last cluster visited */ 63 }; 64 65 /* 66 * flags 67 */ 68 #define PC_MOD 0x01 /* file data has been modified */ 69 #define PC_CHG 0x02 /* node data has been changed */ 70 #define PC_INVAL 0x04 /* node is invalid */ 71 #define PC_EXTERNAL 0x08 /* vnode ref is held externally */ 72 #define PC_ACC 0x10 /* file data has been accessed */ 73 #define PC_RELEHOLD 0x80 /* node is being released */ 74 75 #define PCTOV(PCP) ((PCP)->pc_vn) 76 #define VTOPC(VP) ((struct pcnode *)((VP)->v_data)) 77 78 /* 79 * Make a unique integer for a file 80 */ 81 #define pc_makenodeid(BN, OFF, ATTR, SCLUSTER, ENTPS) \ 82 (ino_t)((ATTR) & PCA_DIR ? \ 83 (uint32_t)(-(SCLUSTER) - 1) : \ 84 ((BN) * (ENTPS)) + ((OFF) / sizeof (struct pcdir))) 85 86 #define NPCHASH 1 87 88 #if NPCHASH == 1 89 #define PCFHASH(FSP, BN, O) 0 90 #define PCDHASH(FSP, SC) 0 91 #else 92 #define PCFHASH(FSP, BN, O) (((unsigned)FSP + BN + O) % NPCHASH) 93 #define PCDHASH(FSP, SC) (((unsigned)FSP + SC) % NPCHASH) 94 #endif 95 96 struct pchead { 97 struct pcnode *pch_forw; 98 struct pcnode *pch_back; 99 }; 100 101 /* 102 * pcnode file and directory operations vectors 103 */ 104 extern struct vnodeops *pcfs_fvnodeops; 105 extern struct vnodeops *pcfs_dvnodeops; 106 extern const struct fs_operation_def pcfs_fvnodeops_template[]; 107 extern const struct fs_operation_def pcfs_dvnodeops_template[]; 108 extern struct pchead pcfhead[]; 109 extern struct pchead pcdhead[]; 110 111 /* 112 * pcnode routines 113 */ 114 extern void pc_init(void); 115 extern struct pcnode *pc_getnode(struct pcfs *, daddr_t, int, struct pcdir *); 116 extern void pc_rele(struct pcnode *); 117 extern void pc_mark_mod(struct pcfs *, struct pcnode *); 118 extern void pc_mark_acc(struct pcfs *, struct pcnode *); 119 extern int pc_nodesync(struct pcnode *); 120 extern int pc_nodeupdate(struct pcnode *); 121 extern int pc_bmap(struct pcnode *, daddr_t, daddr_t *, uint_t *); 122 123 extern int pc_balloc(struct pcnode *, daddr_t, int, daddr_t *); 124 extern int pc_bfree(struct pcnode *, pc_cluster32_t); 125 extern int pc_verify(struct pcfs *); 126 extern void pc_diskchanged(struct pcfs *); 127 extern void pc_mark_irrecov(struct pcfs *); 128 129 extern int pc_dirlook(struct pcnode *, char *, struct pcnode **); 130 extern int pc_direnter(struct pcnode *, char *, struct vattr *, 131 struct pcnode **); 132 extern int pc_dirremove(struct pcnode *, char *, struct vnode *, enum vtype); 133 extern int pc_rename(struct pcnode *, struct pcnode *, char *, char *); 134 extern int pc_blkatoff(struct pcnode *, offset_t, struct buf **, 135 struct pcdir **); 136 extern int pc_truncate(struct pcnode *, uint_t); 137 extern int pc_fileclsize(struct pcfs *, pc_cluster32_t, pc_cluster32_t *); 138 extern int pcfs_putapage(struct vnode *, page_t *, u_offset_t *, size_t *, int, 139 struct cred *); 140 extern void pc_badfs(struct pcfs *); 141 142 #ifdef __cplusplus 143 } 144 #endif 145 146 #endif /* _SYS_FS_PC_NODE_H */ 147