bfs_sysvbfs.c revision 1.3.6.3
1 1.3.6.3 yamt /* $NetBSD: bfs_sysvbfs.c,v 1.3.6.3 2006/12/30 20:50:01 yamt Exp $ */ 2 1.3.6.2 yamt 3 1.3.6.2 yamt /*- 4 1.3.6.2 yamt * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 1.3.6.2 yamt * All rights reserved. 6 1.3.6.2 yamt * 7 1.3.6.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.3.6.2 yamt * by UCHIYAMA Yasushi. 9 1.3.6.2 yamt * 10 1.3.6.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.3.6.2 yamt * modification, are permitted provided that the following conditions 12 1.3.6.2 yamt * are met: 13 1.3.6.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.3.6.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.3.6.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.6.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.3.6.2 yamt * documentation and/or other materials provided with the distribution. 18 1.3.6.2 yamt * 3. All advertising materials mentioning features or use of this software 19 1.3.6.2 yamt * must display the following acknowledgement: 20 1.3.6.2 yamt * This product includes software developed by the NetBSD 21 1.3.6.2 yamt * Foundation, Inc. and its contributors. 22 1.3.6.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.3.6.2 yamt * contributors may be used to endorse or promote products derived 24 1.3.6.2 yamt * from this software without specific prior written permission. 25 1.3.6.2 yamt * 26 1.3.6.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.3.6.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.3.6.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.3.6.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.3.6.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.3.6.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.3.6.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.3.6.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.3.6.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.3.6.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.3.6.2 yamt * POSSIBILITY OF SUCH DAMAGE. 37 1.3.6.2 yamt */ 38 1.3.6.2 yamt 39 1.3.6.2 yamt #include <sys/cdefs.h> 40 1.3.6.2 yamt 41 1.3.6.3 yamt __KERNEL_RCSID(0, "$NetBSD: bfs_sysvbfs.c,v 1.3.6.3 2006/12/30 20:50:01 yamt Exp $"); 42 1.3.6.2 yamt 43 1.3.6.2 yamt #include <sys/param.h> 44 1.3.6.2 yamt #include <sys/types.h> 45 1.3.6.2 yamt #include <sys/systm.h> 46 1.3.6.2 yamt #include <sys/buf.h> 47 1.3.6.2 yamt #include <sys/malloc.h> 48 1.3.6.2 yamt #include <sys/kauth.h> 49 1.3.6.2 yamt #include <fs/sysvbfs/bfs.h> 50 1.3.6.2 yamt 51 1.3.6.2 yamt struct bc_io_ops { 52 1.3.6.2 yamt struct sector_io_ops io; 53 1.3.6.2 yamt struct vnode *vp; 54 1.3.6.2 yamt kauth_cred_t cred; 55 1.3.6.2 yamt }; 56 1.3.6.2 yamt 57 1.3.6.2 yamt #define STATIC 58 1.3.6.2 yamt 59 1.3.6.2 yamt STATIC boolean_t bc_read_n(void *, uint8_t *, daddr_t, int); 60 1.3.6.2 yamt STATIC boolean_t bc_read(void *, uint8_t *, daddr_t); 61 1.3.6.2 yamt STATIC boolean_t bc_write_n(void *, uint8_t *, daddr_t, int); 62 1.3.6.2 yamt STATIC boolean_t bc_write(void *, uint8_t *, daddr_t); 63 1.3.6.2 yamt 64 1.3.6.2 yamt int 65 1.3.6.2 yamt sysvbfs_bfs_init(struct bfs **bfsp, struct vnode *vp) 66 1.3.6.2 yamt { 67 1.3.6.2 yamt struct bc_io_ops *bio; 68 1.3.6.2 yamt 69 1.3.6.2 yamt if ((bio = malloc(sizeof(*bio), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 70 1.3.6.2 yamt printf("can't allocate I/O ops.\n"); 71 1.3.6.2 yamt return ENOMEM; 72 1.3.6.2 yamt } 73 1.3.6.2 yamt 74 1.3.6.2 yamt bio->io.read = bc_read; 75 1.3.6.2 yamt bio->io.read_n = bc_read_n; 76 1.3.6.2 yamt bio->io.write = bc_write; 77 1.3.6.2 yamt bio->io.write_n = bc_write_n; 78 1.3.6.2 yamt bio->vp = vp; 79 1.3.6.2 yamt bio->cred = NOCRED; /* sysvbfs layer check cred. */ 80 1.3.6.2 yamt 81 1.3.6.2 yamt return bfs_init2(bfsp, 0, (struct sector_io_ops *)bio, FALSE); 82 1.3.6.2 yamt } 83 1.3.6.2 yamt 84 1.3.6.2 yamt void 85 1.3.6.2 yamt sysvbfs_bfs_fini(struct bfs *bfs) 86 1.3.6.2 yamt { 87 1.3.6.2 yamt 88 1.3.6.2 yamt free(bfs->io, M_TEMP); 89 1.3.6.2 yamt bfs_fini(bfs); 90 1.3.6.2 yamt } 91 1.3.6.2 yamt 92 1.3.6.2 yamt STATIC boolean_t 93 1.3.6.2 yamt bc_read_n(void *self, uint8_t *buf, daddr_t block, int count) 94 1.3.6.2 yamt { 95 1.3.6.2 yamt int i; 96 1.3.6.2 yamt 97 1.3.6.2 yamt for (i = 0; i < count; i++) { 98 1.3.6.2 yamt if (!bc_read(self, buf, block)) 99 1.3.6.2 yamt return FALSE; 100 1.3.6.2 yamt buf += DEV_BSIZE; 101 1.3.6.2 yamt block++; 102 1.3.6.2 yamt } 103 1.3.6.2 yamt 104 1.3.6.2 yamt return TRUE; 105 1.3.6.2 yamt } 106 1.3.6.2 yamt 107 1.3.6.2 yamt STATIC boolean_t 108 1.3.6.2 yamt bc_read(void *self, uint8_t *buf, daddr_t block) 109 1.3.6.2 yamt { 110 1.3.6.2 yamt struct bc_io_ops *bio = self; 111 1.3.6.2 yamt struct buf *bp = NULL; 112 1.3.6.2 yamt 113 1.3.6.2 yamt if (bread(bio->vp, block, DEV_BSIZE, bio->cred, &bp) != 0) 114 1.3.6.2 yamt goto error_exit; 115 1.3.6.2 yamt memcpy(buf, bp->b_data, DEV_BSIZE); 116 1.3.6.2 yamt brelse(bp); 117 1.3.6.2 yamt 118 1.3.6.2 yamt return TRUE; 119 1.3.6.2 yamt error_exit: 120 1.3.6.3 yamt printf("%s: block %lld read failed.\n", __FUNCTION__, 121 1.3.6.3 yamt (long long int)block); 122 1.3.6.2 yamt 123 1.3.6.2 yamt if (bp != NULL) 124 1.3.6.2 yamt brelse(bp); 125 1.3.6.2 yamt return FALSE; 126 1.3.6.2 yamt } 127 1.3.6.2 yamt 128 1.3.6.2 yamt STATIC boolean_t 129 1.3.6.2 yamt bc_write_n(void *self, uint8_t *buf, daddr_t block, int count) 130 1.3.6.2 yamt { 131 1.3.6.2 yamt int i; 132 1.3.6.2 yamt 133 1.3.6.2 yamt for (i = 0; i < count; i++) { 134 1.3.6.2 yamt if (!bc_write(self, buf, block)) 135 1.3.6.2 yamt return FALSE; 136 1.3.6.2 yamt buf += DEV_BSIZE; 137 1.3.6.2 yamt block++; 138 1.3.6.2 yamt } 139 1.3.6.2 yamt 140 1.3.6.2 yamt return TRUE; 141 1.3.6.2 yamt } 142 1.3.6.2 yamt 143 1.3.6.2 yamt STATIC boolean_t 144 1.3.6.2 yamt bc_write(void *self, uint8_t *buf, daddr_t block) 145 1.3.6.2 yamt { 146 1.3.6.2 yamt struct bc_io_ops *bio = self; 147 1.3.6.2 yamt struct buf *bp; 148 1.3.6.2 yamt 149 1.3.6.2 yamt #if 0 150 1.3.6.2 yamt printf("%s: block=%lld\n", __FUNCTION__, block); 151 1.3.6.2 yamt #endif 152 1.3.6.2 yamt if ((bp = getblk(bio->vp, block, DEV_BSIZE, 0, 0)) == 0) { 153 1.3.6.2 yamt printf("getblk failed.\n"); 154 1.3.6.2 yamt return FALSE; 155 1.3.6.2 yamt } 156 1.3.6.2 yamt memcpy(bp->b_data, buf, DEV_BSIZE); 157 1.3.6.2 yamt 158 1.3.6.2 yamt if (bwrite(bp) != 0) { 159 1.3.6.2 yamt printf("bwrite failed.\n"); 160 1.3.6.2 yamt return FALSE; 161 1.3.6.2 yamt } 162 1.3.6.2 yamt 163 1.3.6.2 yamt return TRUE; 164 1.3.6.2 yamt } 165
Indexes created Mon Sep 29 18:09:42 GMT 2025