ba122e68e0
support is partial in that it will refuse to create large files on filesystems that haven't been upgraded to EXT2_DYN_REV or that don't have the EXT2_FEATURE_RO_COMPAT_LARGE_FILE flag set in the superblock. MFC after: 2 weeks
136 lines
4.0 KiB
C
136 lines
4.0 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 into inodes 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 <gnu/ext2fs/inode.h>
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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_inode( in )
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struct inode *in;
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{
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int i;
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printf( "Inode: %5d", in->i_number);
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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", in->i_mode, in->i_flags, in->i_gen);
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printf( "User: %5lu Group: %5lu Size: %lu\n",
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(unsigned long)in->i_uid, (unsigned long)in->i_gid,
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(unsigned long)in->i_size);
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printf( "Links: %3d Blockcount: %d\n",
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in->i_nlink, in->i_blocks);
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printf( "ctime: 0x%x", in->i_ctime);
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printf( "atime: 0x%x", in->i_atime);
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printf( "mtime: 0x%x", in->i_mtime);
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printf( "BLOCKS: ");
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for(i=0; i < (in->i_blocks <= 24 ? ((in->i_blocks+1)/2): 12); i++)
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printf("%d ", in->i_db[i]);
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printf("\n");
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}
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/*
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* raw ext2 inode to inode
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*/
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void
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ext2_ei2i(ei, ip)
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struct ext2_inode *ei;
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struct inode *ip;
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{
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int i;
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ip->i_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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ip->i_mode = ei->i_links_count ? ei->i_mode : 0;
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ip->i_size = ei->i_size;
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if (S_ISREG(ip->i_mode))
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ip->i_size |= ((u_int64_t)ei->i_size_high) << 32;
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ip->i_atime = ei->i_atime;
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ip->i_mtime = ei->i_mtime;
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ip->i_ctime = ei->i_ctime;
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ip->i_flags = 0;
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ip->i_flags |= (ei->i_flags & EXT2_APPEND_FL) ? APPEND : 0;
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ip->i_flags |= (ei->i_flags & EXT2_IMMUTABLE_FL) ? IMMUTABLE : 0;
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ip->i_blocks = ei->i_blocks;
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ip->i_gen = ei->i_generation;
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ip->i_uid = ei->i_uid;
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ip->i_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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ip->i_db[i] = ei->i_block[i];
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for(i = 0; i < NIADDR; i++)
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ip->i_ib[i] = ei->i_block[EXT2_NDIR_BLOCKS + i];
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}
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/*
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* inode to raw ext2 inode
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*/
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void
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ext2_i2ei(ip, ei)
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struct inode *ip;
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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 = ip->i_mode;
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ei->i_links_count = ip->i_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 : ip->i_mtime;
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ei->i_size = ip->i_size;
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if (S_ISREG(ip->i_mode))
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ei->i_size_high = ip->i_size >> 32;
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ei->i_atime = ip->i_atime;
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ei->i_mtime = ip->i_mtime;
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ei->i_ctime = ip->i_ctime;
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ei->i_flags = ip->i_flags;
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ei->i_flags = 0;
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ei->i_flags |= (ip->i_flags & APPEND) ? EXT2_APPEND_FL: 0;
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ei->i_flags |= (ip->i_flags & IMMUTABLE) ? EXT2_IMMUTABLE_FL: 0;
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ei->i_blocks = ip->i_blocks;
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ei->i_generation = ip->i_gen;
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ei->i_uid = ip->i_uid;
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ei->i_gid = ip->i_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] = ip->i_db[i];
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for(i = 0; i < NIADDR; i++)
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ei->i_block[EXT2_NDIR_BLOCKS + i] = ip->i_ib[i];
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}
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