gfs.h revision 3898:c788126f2a20
11541Srgrimes/* 21541Srgrimes * CDDL HEADER START 31541Srgrimes * 41541Srgrimes * The contents of this file are subject to the terms of the 51541Srgrimes * Common Development and Distribution License (the "License"). 61541Srgrimes * You may not use this file except in compliance with the License. 71541Srgrimes * 81541Srgrimes * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 91541Srgrimes * or http://www.opensolaris.org/os/licensing. 101541Srgrimes * See the License for the specific language governing permissions 111541Srgrimes * and limitations under the License. 121541Srgrimes * 131541Srgrimes * When distributing Covered Code, include this CDDL HEADER in each 141541Srgrimes * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 151541Srgrimes * If applicable, add the following below this CDDL HEADER, with the 161541Srgrimes * fields enclosed by brackets "[]" replaced with your own identifying 171541Srgrimes * information: Portions Copyright [yyyy] [name of copyright owner] 181541Srgrimes * 191541Srgrimes * CDDL HEADER END 201541Srgrimes */ 211541Srgrimes/* 221541Srgrimes * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 231541Srgrimes * Use is subject to license terms. 241541Srgrimes */ 251541Srgrimes 261541Srgrimes#ifndef _SYS_GFS_H 271541Srgrimes#define _SYS_GFS_H 281541Srgrimes 291541Srgrimes#pragma ident "%Z%%M% %I% %E% SMI" 301541Srgrimes 311541Srgrimes#include <sys/types.h> 321541Srgrimes#include <sys/vnode.h> 331541Srgrimes#include <sys/vfs_opreg.h> 344934Ssmace#include <sys/mutex.h> 351541Srgrimes#include <sys/dirent.h> 361541Srgrimes#include <sys/uio.h> 372165Spaul#include <sys/list.h> 382165Spaul#include <sys/pathname.h> 392165Spaul 401938Sdg#ifdef __cplusplus 414934Ssmaceextern "C" { 421541Srgrimes#endif 434934Ssmace 441541Srgrimestypedef struct gfs_opsvec { 451541Srgrimes const char *gfsv_name; /* vnode description */ 461541Srgrimes const fs_operation_def_t *gfsv_template; /* ops template */ 471541Srgrimes vnodeops_t **gfsv_ops; /* ptr to result */ 481541Srgrimes} gfs_opsvec_t; 494934Ssmace 501541Srgrimesint gfs_make_opsvec(gfs_opsvec_t *); 514934Ssmace 521541Srgrimes#define GFS_CACHE_VNODE 0x1 531541Srgrimes 541541Srgrimestypedef struct gfs_dirent { 551541Srgrimes char *gfse_name; /* entry name */ 561541Srgrimes vnode_t *(*gfse_ctor)(vnode_t *); /* constructor */ 571541Srgrimes int gfse_flags; /* flags */ 581541Srgrimes list_node_t gfse_link; /* dynamic list */ 591541Srgrimes vnode_t *gfse_vnode; /* cached vnode */ 601541Srgrimes} gfs_dirent_t; 611541Srgrimes 621541Srgrimestypedef enum gfs_type { 632165Spaul GFS_DIR, 642165Spaul GFS_FILE 65} gfs_type_t; 66 67typedef struct gfs_file { 68 vnode_t *gfs_vnode; /* current vnode */ 69 vnode_t *gfs_parent; /* parent vnode */ 70 size_t gfs_size; /* size of private data structure */ 71 gfs_type_t gfs_type; /* type of vnode */ 72 int gfs_index; /* index in parent dir */ 73 ino64_t gfs_ino; /* inode for this vnode */ 74} gfs_file_t; 75 76typedef int (*gfs_readdir_cb)(vnode_t *, struct dirent64 *, int *, offset_t *, 77 offset_t *, void *); 78typedef int (*gfs_lookup_cb)(vnode_t *, const char *, vnode_t **, ino64_t *); 79typedef ino64_t (*gfs_inode_cb)(vnode_t *, int); 80 81typedef struct gfs_dir { 82 gfs_file_t gfsd_file; /* generic file attributes */ 83 gfs_dirent_t *gfsd_static; /* statically defined entries */ 84 int gfsd_nstatic; /* # static entries */ 85 kmutex_t gfsd_lock; /* protects entries */ 86 int gfsd_maxlen; /* maximum name length */ 87 gfs_readdir_cb gfsd_readdir; /* readdir() callback */ 88 gfs_lookup_cb gfsd_lookup; /* lookup() callback */ 89 gfs_inode_cb gfsd_inode; /* get an inode number */ 90} gfs_dir_t; 91 92struct vfs; 93 94extern vnode_t *gfs_file_create(size_t, vnode_t *, vnodeops_t *); 95extern vnode_t *gfs_dir_create(size_t, vnode_t *, vnodeops_t *, 96 gfs_dirent_t *, gfs_inode_cb, int, gfs_readdir_cb, gfs_lookup_cb); 97extern vnode_t *gfs_root_create(size_t, struct vfs *, vnodeops_t *, ino64_t, 98 gfs_dirent_t *, gfs_inode_cb, int, gfs_readdir_cb, gfs_lookup_cb); 99 100extern void *gfs_file_inactive(vnode_t *); 101extern void *gfs_dir_inactive(vnode_t *); 102 103extern int gfs_dir_lookup(vnode_t *, const char *, vnode_t **); 104extern int gfs_dir_readdir(vnode_t *, uio_t *, int *, void *); 105 106#define gfs_dir_lock(gd) mutex_enter(&(gd)->gfsd_lock) 107#define gfs_dir_unlock(gd) mutex_exit(&(gd)->gfsd_lock) 108 109#define gfs_file_parent(vp) (((gfs_file_t *)(vp)->v_data)->gfs_parent) 110 111#define gfs_file_index(vp) (((gfs_file_t *)(vp)->v_data)->gfs_index) 112#define gfs_file_set_index(vp, idx) \ 113 (((gfs_file_t *)(vp)->v_data)->gfs_index = (idx)) 114 115#define gfs_file_inode(vp) (((gfs_file_t *)(vp)->v_data)->gfs_ino) 116#define gfs_file_set_inode(vp, ino) \ 117 (((gfs_file_t *)(vp)->v_data)->gfs_ino = (ino)) 118 119typedef struct gfs_readdir_state { 120 struct dirent64 *grd_dirent; /* directory entry buffer */ 121 size_t grd_namlen; /* max file name length */ 122 size_t grd_ureclen; /* exported record size */ 123 ssize_t grd_oresid; /* original uio_resid */ 124 ino64_t grd_parent; /* inode of parent */ 125 ino64_t grd_self; /* inode of self */ 126} gfs_readdir_state_t; 127 128extern int gfs_readdir_init(gfs_readdir_state_t *, int, int, uio_t *, ino64_t, 129 ino64_t); 130extern int gfs_readdir_emit(gfs_readdir_state_t *, uio_t *, offset_t, ino64_t, 131 const char *); 132extern int gfs_readdir_emitn(gfs_readdir_state_t *, uio_t *, offset_t, ino64_t, 133 unsigned long); 134extern int gfs_readdir_pred(gfs_readdir_state_t *, uio_t *, offset_t *); 135extern int gfs_readdir_fini(gfs_readdir_state_t *, int, int *, int); 136 137extern int gfs_lookup_dot(vnode_t **, vnode_t *, vnode_t *, const char *); 138 139extern int gfs_vop_lookup(vnode_t *, char *, vnode_t **, pathname_t *, 140 int, vnode_t *, cred_t *); 141extern int gfs_vop_readdir(vnode_t *, uio_t *, cred_t *, int *); 142extern int gfs_vop_map(vnode_t *, offset_t, struct as *, caddr_t *, 143 size_t, uchar_t, uchar_t, uint_t, cred_t *); 144extern void gfs_vop_inactive(vnode_t *, cred_t *); 145 146 147#ifdef __cplusplus 148} 149#endif 150 151#endif /* _SYS_GFS_H */ 152