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1c85e6a35d
filesystem expands the inode to 256 bytes to make space for 64-bit block pointers. It also adds a file-creation time field, an ability to use jumbo blocks per inode to allow extent like pointer density, and space for extended attributes (up to twice the filesystem block size worth of attributes, e.g., on a 16K filesystem, there is space for 32K of attributes). UFS2 fully supports and runs existing UFS1 filesystems. New filesystems built using newfs can be built in either UFS1 or UFS2 format using the -O option. In this commit UFS1 is the default format, so if you want to build UFS2 format filesystems, you must specify -O 2. This default will be changed to UFS2 when UFS2 proves itself to be stable. In this commit the boot code for reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c) as there is insufficient space in the boot block. Once the size of the boot block is increased, this code can be defined. Things to note: the definition of SBSIZE has changed to SBLOCKSIZE. The header file <ufs/ufs/dinode.h> must be included before <ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and ufs_lbn_t. Still TODO: Verify that the first level bootstraps work for all the architectures. Convert the utility ffsinfo to understand UFS2 and test growfs. Add support for the extended attribute storage. Update soft updates to ensure integrity of extended attribute storage. Switch the current extended attribute interfaces to use the extended attribute storage. Add the extent like functionality (framework is there, but is currently never used). Sponsored by: DARPA & NAI Labs. Reviewed by: Poul-Henning Kamp <phk@freebsd.org>
149 lines
5.8 KiB
C
149 lines
5.8 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)restore.h 8.3 (Berkeley) 9/13/94
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* $FreeBSD$
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*/
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/*
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* Flags
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*/
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extern int bflag; /* set input block size */
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extern int dflag; /* print out debugging info */
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extern int hflag; /* restore heirarchies */
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extern int mflag; /* restore by name instead of inode number */
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extern int Nflag; /* do not write the disk */
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extern int uflag; /* unlink symlink targets */
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extern int vflag; /* print out actions taken */
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extern int yflag; /* always try to recover from tape errors */
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/*
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* Global variables
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*/
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extern char *dumpmap; /* map of inodes on this dump tape */
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extern char *usedinomap; /* map of inodes that are in use on this fs */
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extern ino_t maxino; /* highest numbered inode in this filesystem */
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extern long dumpnum; /* location of the dump on this tape */
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extern long volno; /* current volume being read */
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extern long ntrec; /* number of TP_BSIZE records per tape block */
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extern time_t dumptime; /* time that this dump begins */
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extern time_t dumpdate; /* time that this dump was made */
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extern char command; /* opration being performed */
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extern FILE *terminal; /* file descriptor for the terminal input */
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extern int Bcvt; /* need byte swapping on inodes and dirs */
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/*
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* Each file in the filesystem is described by one of these entries
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*/
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struct entry {
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char *e_name; /* the current name of this entry */
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u_char e_namlen; /* length of this name */
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char e_type; /* type of this entry, see below */
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short e_flags; /* status flags, see below */
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ino_t e_ino; /* inode number in previous file sys */
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long e_index; /* unique index (for dumpped table) */
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struct entry *e_parent; /* pointer to parent directory (..) */
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struct entry *e_sibling; /* next element in this directory (.) */
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struct entry *e_links; /* hard links to this inode */
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struct entry *e_entries; /* for directories, their entries */
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struct entry *e_next; /* hash chain list */
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};
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/* types */
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#define LEAF 1 /* non-directory entry */
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#define NODE 2 /* directory entry */
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#define LINK 4 /* synthesized type, stripped by addentry */
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/* flags */
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#define EXTRACT 0x0001 /* entry is to be replaced from the tape */
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#define NEW 0x0002 /* a new entry to be extracted */
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#define KEEP 0x0004 /* entry is not to change */
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#define REMOVED 0x0010 /* entry has been removed */
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#define TMPNAME 0x0020 /* entry has been given a temporary name */
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#define EXISTED 0x0040 /* directory already existed during extract */
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/*
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* Constants associated with entry structs
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*/
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#define HARDLINK 1
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#define SYMLINK 2
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#define TMPHDR "RSTTMP"
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/*
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* The entry describes the next file available on the tape
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*/
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struct context {
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short action; /* action being taken on this file */
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mode_t mode; /* mode of file */
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ino_t ino; /* inumber of file */
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uid_t uid; /* file owner */
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gid_t gid; /* file group */
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int file_flags; /* status flags (chflags) */
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int rdev; /* device number of file */
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time_t atime_sec; /* access time seconds */
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time_t mtime_sec; /* modified time seconds */
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int atime_nsec; /* access time nanoseconds */
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int mtime_nsec; /* modified time nanoseconds */
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off_t size; /* size of file */
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char *name; /* name of file */
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} curfile;
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/* actions */
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#define USING 1 /* extracting from the tape */
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#define SKIP 2 /* skipping */
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#define UNKNOWN 3 /* disposition or starting point is unknown */
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/*
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* Definitions for library routines operating on directories.
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*/
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typedef struct rstdirdesc RST_DIR;
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/*
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* Flags to setdirmodes.
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*/
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#define FORCE 0x0001
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/*
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* Useful macros
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*/
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#define TSTINO(ino, map) \
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(map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY)))
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#define SETINO(ino, map) \
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map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY)
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#define dprintf if (dflag) fprintf
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#define vprintf if (vflag) fprintf
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#define GOOD 1
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#define FAIL 0
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