diff options
Diffstat (limited to 'sys/fs/ext2fs/ext2_inode_cnv.c')
| -rw-r--r-- | sys/fs/ext2fs/ext2_inode_cnv.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/sys/fs/ext2fs/ext2_inode_cnv.c b/sys/fs/ext2fs/ext2_inode_cnv.c new file mode 100644 index 000000000000..b042a5a458f0 --- /dev/null +++ b/sys/fs/ext2fs/ext2_inode_cnv.c @@ -0,0 +1,138 @@ +/*- + * Copyright (c) 1995 The University of Utah and + * the Computer Systems Laboratory at the University of Utah (CSL). + * All rights reserved. + * + * Permission to use, copy, modify and distribute this software is hereby + * granted provided that (1) source code retains these copyright, permission, + * and disclaimer notices, and (2) redistributions including binaries + * reproduce the notices in supporting documentation, and (3) all advertising + * materials mentioning features or use of this software display the following + * acknowledgement: ``This product includes software developed by the + * Computer Systems Laboratory at the University of Utah.'' + * + * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS + * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF + * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * CSL requests users of this software to return to csl-dist@cs.utah.edu any + * improvements that they make and grant CSL redistribution rights. + * + * Utah $Hdr$ + * $FreeBSD$ + */ + +/* + * routines to convert on disk ext2 inodes into inodes and back + */ +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/lock.h> +#include <sys/stat.h> +#include <sys/vnode.h> + +#include <fs/ext2fs/inode.h> +#include <fs/ext2fs/ext2fs.h> +#include <fs/ext2fs/ext2_extern.h> +#include <fs/ext2fs/ext2_dinode.h> + +void +ext2_print_inode( in ) + struct inode *in; +{ + int i; + + printf( "Inode: %5d", in->i_number); + printf( /* "Inode: %5d" */ + " Type: %10s Mode: 0x%o Flags: 0x%x Version: %d\n", + "n/a", in->i_mode, in->i_flags, in->i_gen); + printf( "User: %5lu Group: %5lu Size: %lu\n", + (unsigned long)in->i_uid, (unsigned long)in->i_gid, + (unsigned long)in->i_size); + printf( "Links: %3d Blockcount: %d\n", + in->i_nlink, in->i_blocks); + printf( "ctime: 0x%x", in->i_ctime); + printf( "atime: 0x%x", in->i_atime); + printf( "mtime: 0x%x", in->i_mtime); + printf( "BLOCKS: "); + for(i=0; i < (in->i_blocks <= 24 ? ((in->i_blocks+1)/2): 12); i++) + printf("%d ", in->i_db[i]); + printf("\n"); +} + +/* + * raw ext2 inode to inode + */ +void +ext2_ei2i(ei, ip) + struct ext2fs_dinode *ei; + struct inode *ip; +{ + int i; + + ip->i_nlink = ei->e2di_nlink; + /* Godmar thinks - if the link count is zero, then the inode is + unused - according to ext2 standards. Ufs marks this fact + by setting i_mode to zero - why ? + I can see that this might lead to problems in an undelete. + */ + ip->i_mode = ei->e2di_nlink ? ei->e2di_mode : 0; + ip->i_size = ei->e2di_size; + if (S_ISREG(ip->i_mode)) + ip->i_size |= ((u_int64_t)ei->e2di_size_high) << 32; + ip->i_atime = ei->e2di_atime; + ip->i_mtime = ei->e2di_mtime; + ip->i_ctime = ei->e2di_ctime; + ip->i_flags = 0; + ip->i_flags |= (ei->e2di_flags & EXT2_APPEND) ? SF_APPEND : 0; + ip->i_flags |= (ei->e2di_flags & EXT2_IMMUTABLE) ? SF_IMMUTABLE : 0; + ip->i_flags |= (ei->e2di_flags & EXT2_NODUMP) ? UF_NODUMP : 0; + ip->i_blocks = ei->e2di_nblock; + ip->i_gen = ei->e2di_gen; + ip->i_uid = ei->e2di_uid; + ip->i_gid = ei->e2di_gid; + /* XXX use memcpy */ + for(i = 0; i < NDADDR; i++) + ip->i_db[i] = ei->e2di_blocks[i]; + for(i = 0; i < NIADDR; i++) + ip->i_ib[i] = ei->e2di_blocks[EXT2_NDIR_BLOCKS + i]; +} + +/* + * inode to raw ext2 inode + */ +void +ext2_i2ei(ip, ei) + struct inode *ip; + struct ext2fs_dinode *ei; +{ + int i; + + ei->e2di_mode = ip->i_mode; + ei->e2di_nlink = ip->i_nlink; + /* + Godmar thinks: if dtime is nonzero, ext2 says this inode + has been deleted, this would correspond to a zero link count + */ + ei->e2di_dtime = ei->e2di_nlink ? 0 : ip->i_mtime; + ei->e2di_size = ip->i_size; + if (S_ISREG(ip->i_mode)) + ei->e2di_size_high = ip->i_size >> 32; + ei->e2di_atime = ip->i_atime; + ei->e2di_mtime = ip->i_mtime; + ei->e2di_ctime = ip->i_ctime; + ei->e2di_flags = ip->i_flags; + ei->e2di_flags = 0; + ei->e2di_flags |= (ip->i_flags & SF_APPEND) ? EXT2_APPEND: 0; + ei->e2di_flags |= (ip->i_flags & SF_IMMUTABLE) ? EXT2_IMMUTABLE: 0; + ei->e2di_flags |= (ip->i_flags & UF_NODUMP) ? EXT2_NODUMP: 0; + ei->e2di_nblock = ip->i_blocks; + ei->e2di_gen = ip->i_gen; + ei->e2di_uid = ip->i_uid; + ei->e2di_gid = ip->i_gid; + /* XXX use memcpy */ + for(i = 0; i < NDADDR; i++) + ei->e2di_blocks[i] = ip->i_db[i]; + for(i = 0; i < NIADDR; i++) + ei->e2di_blocks[EXT2_NDIR_BLOCKS + i] = ip->i_ib[i]; +} |