| fs.5 (115211) | fs.5 (119893) |
|---|---|
| 1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)fs.5 8.2 (Berkeley) 4/19/94 | 1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)fs.5 8.2 (Berkeley) 4/19/94 |
| 33.\" $FreeBSD: head/share/man/man5/fs.5 115211 2003-05-21 15:55:40Z ru $ | 33.\" $FreeBSD: head/share/man/man5/fs.5 119893 2003-09-08 19:57:22Z ru $ |
| 34.\" 35.Dd April 19, 1994 36.Dt FS 5 37.Os 38.Sh NAME 39.Nm fs , 40.Nm inode 41.Nd format of file system volume 42.Sh SYNOPSIS 43.In sys/param.h 44.In ufs/ffs/fs.h 45.Pp 46.In sys/types.h 47.In sys/lock.h 48.In ufs/ufs/quota.h 49.In ufs/ufs/inode.h 50.Sh DESCRIPTION 51The files | 34.\" 35.Dd April 19, 1994 36.Dt FS 5 37.Os 38.Sh NAME 39.Nm fs , 40.Nm inode 41.Nd format of file system volume 42.Sh SYNOPSIS 43.In sys/param.h 44.In ufs/ffs/fs.h 45.Pp 46.In sys/types.h 47.In sys/lock.h 48.In ufs/ufs/quota.h 49.In ufs/ufs/inode.h 50.Sh DESCRIPTION 51The files |
| 52.Aq Pa fs.h | 52.In fs.h |
| 53and | 53and |
| 54.Aq Pa inode.h | 54.In inode.h |
| 55declare several structures, defined variables and macros 56which are used to create and manage the underlying format of 57file system objects on random access devices (disks). 58.Pp 59The block size and number of blocks which 60comprise a file system are parameters of the file system. 61Sectors beginning at 62.Dv BBLOCK --- 6 unchanged lines hidden (view full) --- 69The actual file system begins at sector 70.Dv SBLOCK 71with the 72.Em super-block 73that is of size 74.Dv SBLOCKSIZE . 75The following structure describes the super-block and is 76from the file | 55declare several structures, defined variables and macros 56which are used to create and manage the underlying format of 57file system objects on random access devices (disks). 58.Pp 59The block size and number of blocks which 60comprise a file system are parameters of the file system. 61Sectors beginning at 62.Dv BBLOCK --- 6 unchanged lines hidden (view full) --- 69The actual file system begins at sector 70.Dv SBLOCK 71with the 72.Em super-block 73that is of size 74.Dv SBLOCKSIZE . 75The following structure describes the super-block and is 76from the file |
| 77.Aq Pa ufs/ffs/fs.h : | 77.In ufs/ffs/fs.h : |
| 78.Bd -literal 79/* 80 * Super block for an FFS filesystem. 81 */ 82struct fs { 83 int32_t fs_firstfield; /* historic filesystem linked list, */ 84 int32_t fs_unused_1; /* used for incore super blocks */ 85 int32_t fs_sblkno; /* offset of super-block in filesys */ --- 286 unchanged lines hidden (view full) --- 372.Ux 373file system. 374There is a unique inode allocated 375for each active file, 376each current directory, each mounted-on file, 377text file, and the root. 378An inode is `named' by its device/i-number pair. 379For further information, see the include file | 78.Bd -literal 79/* 80 * Super block for an FFS filesystem. 81 */ 82struct fs { 83 int32_t fs_firstfield; /* historic filesystem linked list, */ 84 int32_t fs_unused_1; /* used for incore super blocks */ 85 int32_t fs_sblkno; /* offset of super-block in filesys */ --- 286 unchanged lines hidden (view full) --- 372.Ux 373file system. 374There is a unique inode allocated 375for each active file, 376each current directory, each mounted-on file, 377text file, and the root. 378An inode is `named' by its device/i-number pair. 379For further information, see the include file |
| 380.Aq Pa ufs/ufs/inode.h . | 380.In ufs/ufs/inode.h . |
| 381.Sh HISTORY 382A super-block structure named filsys appeared in 383.At v6 . 384The file system described in this manual appeared 385in 386.Bx 4.2 . | 381.Sh HISTORY 382A super-block structure named filsys appeared in 383.At v6 . 384The file system described in this manual appeared 385in 386.Bx 4.2 . |