99f4094f21
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
/*
|
|
* 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 in dinodes and back
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/vnode.h>
|
|
|
|
#include <ufs/ufs/quota.h>
|
|
#include <ufs/ufs/inode.h>
|
|
|
|
/*
|
|
* Undo the definitions in <ufs/ufs/inode.h> that would destroy the include
|
|
* of <gnu/ext2fs/ext2_fs.h>.
|
|
*/
|
|
#undef i_atime
|
|
#undef i_blocks
|
|
#undef i_ctime
|
|
#undef i_db
|
|
#undef i_flags
|
|
#undef i_gen
|
|
#undef i_gid
|
|
#undef i_ib
|
|
#undef i_mode
|
|
#undef i_mtime
|
|
#undef i_nlink
|
|
#undef i_rdev
|
|
#undef i_shortlink
|
|
#undef i_size
|
|
#undef i_uid
|
|
|
|
#include <gnu/ext2fs/ext2_fs.h>
|
|
#include <gnu/ext2fs/ext2_extern.h>
|
|
|
|
void
|
|
ext2_print_dinode( di )
|
|
struct dinode *di;
|
|
{
|
|
int i;
|
|
printf( /* "Inode: %5d" */
|
|
" Type: %10s Mode: 0x%o Flags: 0x%x Version: %d\n",
|
|
"n/a", di->di_mode, di->di_flags, di->di_gen);
|
|
printf( "User: %5lu Group: %5lu Size: %lu\n",
|
|
(unsigned long)di->di_uid, (unsigned long)di->di_gid,
|
|
(unsigned long)di->di_size);
|
|
printf( "Links: %3d Blockcount: %d\n",
|
|
di->di_nlink, di->di_blocks);
|
|
printf( "ctime: 0x%x", di->di_ctime);
|
|
printf( "atime: 0x%x", di->di_atime);
|
|
printf( "mtime: 0x%x", di->di_mtime);
|
|
printf( "BLOCKS: ");
|
|
for(i=0; i < (di->di_blocks <= 24 ? ((di->di_blocks+1)/2): 12); i++)
|
|
printf("%d ", di->di_db[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
void
|
|
ext2_print_inode( in )
|
|
struct inode *in;
|
|
{
|
|
printf( "Inode: %5d", in->i_number);
|
|
ext2_print_dinode(&in->i_din);
|
|
}
|
|
|
|
/*
|
|
* raw ext2 inode to dinode
|
|
*/
|
|
void
|
|
ext2_ei2di(ei, di)
|
|
struct ext2_inode *ei;
|
|
struct dinode *di;
|
|
{
|
|
int i;
|
|
|
|
di->di_nlink = ei->i_links_count;
|
|
/* 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.
|
|
*/
|
|
di->di_mode = ei->i_links_count ? ei->i_mode : 0;
|
|
di->di_size = ei->i_size;
|
|
di->di_atime = ei->i_atime;
|
|
di->di_mtime = ei->i_mtime;
|
|
di->di_ctime = ei->i_ctime;
|
|
di->di_flags = 0;
|
|
di->di_flags |= (ei->i_flags & EXT2_APPEND_FL) ? APPEND : 0;
|
|
di->di_flags |= (ei->i_flags & EXT2_IMMUTABLE_FL) ? IMMUTABLE : 0;
|
|
di->di_blocks = ei->i_blocks;
|
|
di->di_gen = ei->i_generation;
|
|
di->di_uid = ei->i_uid;
|
|
di->di_gid = ei->i_gid;
|
|
/* XXX use memcpy */
|
|
for(i = 0; i < NDADDR; i++)
|
|
di->di_db[i] = ei->i_block[i];
|
|
for(i = 0; i < NIADDR; i++)
|
|
di->di_ib[i] = ei->i_block[EXT2_NDIR_BLOCKS + i];
|
|
}
|
|
|
|
/*
|
|
* dinode to raw ext2 inode
|
|
*/
|
|
void
|
|
ext2_di2ei(di, ei)
|
|
struct dinode *di;
|
|
struct ext2_inode *ei;
|
|
{
|
|
int i;
|
|
|
|
ei->i_mode = di->di_mode;
|
|
ei->i_links_count = di->di_nlink;
|
|
/*
|
|
Godmar thinks: if dtime is nonzero, ext2 says this inode
|
|
has been deleted, this would correspond to a zero link count
|
|
*/
|
|
ei->i_dtime = ei->i_links_count ? 0 : di->di_mtime;
|
|
ei->i_size = di->di_size;
|
|
ei->i_atime = di->di_atime;
|
|
ei->i_mtime = di->di_mtime;
|
|
ei->i_ctime = di->di_ctime;
|
|
ei->i_flags = di->di_flags;
|
|
ei->i_flags = 0;
|
|
ei->i_flags |= (di->di_flags & APPEND) ? EXT2_APPEND_FL: 0;
|
|
ei->i_flags |= (di->di_flags & IMMUTABLE)
|
|
? EXT2_IMMUTABLE_FL: 0;
|
|
ei->i_blocks = di->di_blocks;
|
|
ei->i_generation = di->di_gen;
|
|
ei->i_uid = di->di_uid;
|
|
ei->i_gid = di->di_gid;
|
|
/* XXX use memcpy */
|
|
for(i = 0; i < NDADDR; i++)
|
|
ei->i_block[i] = di->di_db[i];
|
|
for(i = 0; i < NIADDR; i++)
|
|
ei->i_block[EXT2_NDIR_BLOCKS + i] = di->di_ib[i];
|
|
}
|