9ab4cfc599
main changes are: - many things are more dynamic; e.g., the inode size is a new parameter in the superblock instead of a constant. - extensions are controlled by new flags in the superblock. - directory entries may have a file type field. These changes are not used yet, except for a spelling change which affects ext2_cnv.c
161 lines
4.8 KiB
C
161 lines
4.8 KiB
C
/*
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* Copyright (c) 1995 The University of Utah and
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* the Computer Systems Laboratory at the University of Utah (CSL).
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* All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software is hereby
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* granted provided that (1) source code retains these copyright, permission,
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* and disclaimer notices, and (2) redistributions including binaries
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* reproduce the notices in supporting documentation, and (3) all advertising
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* materials mentioning features or use of this software display the following
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* acknowledgement: ``This product includes software developed by the
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* Computer Systems Laboratory at the University of Utah.''
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*
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* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
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* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
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* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* CSL requests users of this software to return to csl-dist@cs.utah.edu any
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* improvements that they make and grant CSL redistribution rights.
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*
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* Utah $Hdr$
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* $FreeBSD$
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*/
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/*
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* routines to convert on disk ext2 inodes in dinodes and back
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/lock.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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/*
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* Undo the definitions in <ufs/ufs/inode.h> that would destroy the include
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* of <gnu/ext2fs/ext2_fs.h>.
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*/
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#undef i_atime
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#undef i_blocks
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#undef i_ctime
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#undef i_db
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#undef i_flags
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#undef i_gen
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#undef i_gid
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#undef i_ib
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#undef i_mode
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#undef i_mtime
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#undef i_nlink
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#undef i_rdev
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#undef i_shortlink
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#undef i_size
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#undef i_uid
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#include <gnu/ext2fs/ext2_fs.h>
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#include <gnu/ext2fs/ext2_extern.h>
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void
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ext2_print_dinode( di )
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struct dinode *di;
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{
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int i;
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printf( /* "Inode: %5d" */
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" Type: %10s Mode: 0x%o Flags: 0x%x Version: %d\n",
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"n/a", di->di_mode, di->di_flags, di->di_gen);
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printf( "User: %5lu Group: %5lu Size: %lu\n",
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(unsigned long)di->di_uid, (unsigned long)di->di_gid,
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(unsigned long)di->di_size);
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printf( "Links: %3d Blockcount: %d\n",
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di->di_nlink, di->di_blocks);
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printf( "ctime: 0x%x", di->di_ctime);
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printf( "atime: 0x%x", di->di_atime);
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printf( "mtime: 0x%x", di->di_mtime);
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printf( "BLOCKS: ");
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for(i=0; i < (di->di_blocks <= 24 ? ((di->di_blocks+1)/2): 12); i++)
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printf("%d ", di->di_db[i]);
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printf("\n");
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}
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void
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ext2_print_inode( in )
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struct inode *in;
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{
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printf( "Inode: %5d", in->i_number);
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ext2_print_dinode(&in->i_din);
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}
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/*
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* raw ext2 inode to dinode
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*/
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void
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ext2_ei2di(ei, di)
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struct ext2_inode *ei;
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struct dinode *di;
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{
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int i;
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di->di_nlink = ei->i_links_count;
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/* Godmar thinks - if the link count is zero, then the inode is
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unused - according to ext2 standards. Ufs marks this fact
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by setting i_mode to zero - why ?
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I can see that this might lead to problems in an undelete.
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*/
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di->di_mode = ei->i_links_count ? ei->i_mode : 0;
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di->di_size = ei->i_size;
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di->di_atime = ei->i_atime;
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di->di_mtime = ei->i_mtime;
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di->di_ctime = ei->i_ctime;
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di->di_flags = 0;
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di->di_flags |= (ei->i_flags & EXT2_APPEND_FL) ? APPEND : 0;
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di->di_flags |= (ei->i_flags & EXT2_IMMUTABLE_FL) ? IMMUTABLE : 0;
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di->di_blocks = ei->i_blocks;
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di->di_gen = ei->i_generation;
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di->di_uid = ei->i_uid;
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di->di_gid = ei->i_gid;
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/* XXX use memcpy */
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for(i = 0; i < NDADDR; i++)
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di->di_db[i] = ei->i_block[i];
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for(i = 0; i < NIADDR; i++)
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di->di_ib[i] = ei->i_block[EXT2_NDIR_BLOCKS + i];
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}
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/*
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* dinode to raw ext2 inode
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*/
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void
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ext2_di2ei(di, ei)
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struct dinode *di;
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struct ext2_inode *ei;
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{
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int i;
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ei->i_mode = di->di_mode;
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ei->i_links_count = di->di_nlink;
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/*
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Godmar thinks: if dtime is nonzero, ext2 says this inode
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has been deleted, this would correspond to a zero link count
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*/
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ei->i_dtime = ei->i_links_count ? 0 : di->di_mtime;
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ei->i_size = di->di_size;
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ei->i_atime = di->di_atime;
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ei->i_mtime = di->di_mtime;
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ei->i_ctime = di->di_ctime;
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ei->i_flags = di->di_flags;
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ei->i_flags = 0;
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ei->i_flags |= (di->di_flags & APPEND) ? EXT2_APPEND_FL: 0;
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ei->i_flags |= (di->di_flags & IMMUTABLE)
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? EXT2_IMMUTABLE_FL: 0;
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ei->i_blocks = di->di_blocks;
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ei->i_generation = di->di_gen;
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ei->i_uid = di->di_uid;
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ei->i_gid = di->di_gid;
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/* XXX use memcpy */
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for(i = 0; i < NDADDR; i++)
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ei->i_block[i] = di->di_db[i];
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for(i = 0; i < NIADDR; i++)
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ei->i_block[EXT2_NDIR_BLOCKS + i] = di->di_ib[i];
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}
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