| ext2_bmap.c (170174) | ext2_bmap.c (202283) |
|---|---|
| 1/*- 2 * Copyright (c) 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 18 unchanged lines hidden (view full) --- 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ufs_bmap.c 8.7 (Berkeley) 3/21/95 | 1/*- 2 * Copyright (c) 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 18 unchanged lines hidden (view full) --- 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ufs_bmap.c 8.7 (Berkeley) 3/21/95 |
| 35 * $FreeBSD: head/sys/gnu/fs/ext2fs/ext2_bmap.c 170174 2007-06-01 01:12:45Z jeff $ | 35 * $FreeBSD: head/sys/fs/ext2fs/ext2_bmap.c 202283 2010-01-14 14:30:54Z lulf $ |
| 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bio.h> 41#include <sys/buf.h> 42#include <sys/proc.h> 43#include <sys/vnode.h> 44#include <sys/mount.h> 45#include <sys/resourcevar.h> 46#include <sys/stat.h> 47 | 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bio.h> 41#include <sys/buf.h> 42#include <sys/proc.h> 43#include <sys/vnode.h> 44#include <sys/mount.h> 45#include <sys/resourcevar.h> 46#include <sys/stat.h> 47 |
| 48#include <gnu/fs/ext2fs/inode.h> 49#include <gnu/fs/ext2fs/ext2_fs.h> 50#include <gnu/fs/ext2fs/ext2_fs_sb.h> 51#include <gnu/fs/ext2fs/ext2_mount.h> 52#include <gnu/fs/ext2fs/ext2_extern.h> | 48#include 49#include <fs/ext2fs/ext2fs.h> 50#include <fs/ext2fs/ext2_mount.h> 51#include <fs/ext2fs/ext2_extern.h> |
| 53 54/* | 52 53/* |
| 55 * Bmap converts a the logical block number of a file to its physical block | 54 * Bmap converts the logical block number of a file to its physical block |
| 56 * number on the disk. The conversion is done by using the logical block 57 * number to index into the array of block pointers described by the dinode. 58 */ 59int 60ext2_bmap(ap) 61 struct vop_bmap_args /* { 62 struct vnode *a_vp; 63 daddr_t a_bn; --- 24 unchanged lines hidden (view full) --- 88/* 89 * Indirect blocks are now on the vnode for the file. They are given negative 90 * logical block numbers. Indirect blocks are addressed by the negative 91 * address of the first data block to which they point. Double indirect blocks 92 * are addressed by one less than the address of the first indirect block to 93 * which they point. Triple indirect blocks are addressed by one less than 94 * the address of the first double indirect block to which they point. 95 * | 55 * number on the disk. The conversion is done by using the logical block 56 * number to index into the array of block pointers described by the dinode. 57 */ 58int 59ext2_bmap(ap) 60 struct vop_bmap_args /* { 61 struct vnode *a_vp; 62 daddr_t a_bn; --- 24 unchanged lines hidden (view full) --- 87/* 88 * Indirect blocks are now on the vnode for the file. They are given negative 89 * logical block numbers. Indirect blocks are addressed by the negative 90 * address of the first data block to which they point. Double indirect blocks 91 * are addressed by one less than the address of the first indirect block to 92 * which they point. Triple indirect blocks are addressed by one less than 93 * the address of the first double indirect block to which they point. 94 * |
| 96 * ufs_bmaparray does the bmap conversion, and if requested returns the | 95 * ext2_bmaparray does the bmap conversion, and if requested returns the |
| 97 * array of logical blocks which must be traversed to get to a block. 98 * Each entry contains the offset into that block that gets you to the 99 * next block and the disk address of the block (if it is assigned). 100 */ 101 102int 103ext2_bmaparray(vp, bn, bnp, runp, runb) 104 struct vnode *vp; --- 231 unchanged lines hidden --- | 96 * array of logical blocks which must be traversed to get to a block. 97 * Each entry contains the offset into that block that gets you to the 98 * next block and the disk address of the block (if it is assigned). 99 */ 100 101int 102ext2_bmaparray(vp, bn, bnp, runp, runb) 103 struct vnode *vp; --- 231 unchanged lines hidden --- |