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/*-
* 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/endian.h>
#include <sys/lock.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <fs/ext2fs/fs.h>
#include <fs/ext2fs/inode.h>
#include <fs/ext2fs/ext2fs.h>
#include <fs/ext2fs/ext2_dinode.h>
#include <fs/ext2fs/ext2_extern.h>
#define XTIME_TO_NSEC(x) ((x & EXT3_NSEC_MASK) >> 2)
#define NSEC_TO_XTIME(t) (le32toh(t << 2) & EXT3_NSEC_MASK)
#ifdef EXT2FS_DEBUG
void
ext2_print_inode(struct inode *in)
{
int i;
struct ext4_extent_header *ehp;
struct ext4_extent *ep;
printf("Inode: %5ju", (uintmax_t)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: %5u Group: %5u Size: %ju\n",
in->i_uid, in->i_gid, (uintmax_t)in->i_size);
printf("Links: %3d Blockcount: %ju\n",
in->i_nlink, (uintmax_t)in->i_blocks);
printf("ctime: 0x%x", in->i_ctime);
printf("atime: 0x%x", in->i_atime);
printf("mtime: 0x%x", in->i_mtime);
if (E2DI_HAS_XTIME(in))
printf("crtime %#x ", in->i_birthtime);
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");
printf("Extents:\n");
ehp = (struct ext4_extent_header *)in->i_db;
printf("Header (magic 0x%x entries %d max %d depth %d gen %d)\n",
ehp->eh_magic, ehp->eh_ecount, ehp->eh_max, ehp->eh_depth,
ehp->eh_gen);
ep = (struct ext4_extent *)(char *)(ehp + 1);
printf("Index (blk %d len %d start_lo %d start_hi %d)\n", ep->e_blk,
ep->e_len, ep->e_start_lo, ep->e_start_hi);
printf("\n");
}
#endif /* EXT2FS_DEBUG */
/*
* raw ext2 inode to inode
*/
void
ext2_ei2i(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;
if (E2DI_HAS_XTIME(ip)) {
ip->i_atimensec = XTIME_TO_NSEC(ei->e2di_atime_extra);
ip->i_mtimensec = XTIME_TO_NSEC(ei->e2di_mtime_extra);
ip->i_ctimensec = XTIME_TO_NSEC(ei->e2di_ctime_extra);
ip->i_birthtime = ei->e2di_crtime;
ip->i_birthnsec = XTIME_TO_NSEC(ei->e2di_crtime_extra);
}
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_flag |= (ei->e2di_flags & EXT3_INDEX) ? IN_E3INDEX : 0;
ip->i_flag |= (ei->e2di_flags & EXT4_EXTENTS) ? IN_E4EXTENTS : 0;
ip->i_blocks = ei->e2di_nblock;
ip->i_facl = ei->e2di_facl;
if (E2DI_HAS_HUGE_FILE(ip)) {
ip->i_blocks |= (uint64_t)ei->e2di_nblock_high << 32;
ip->i_facl |= (uint64_t)ei->e2di_facl_high << 32;
if (ei->e2di_flags & EXT4_HUGE_FILE)
ip->i_blocks = fsbtodb(ip->i_e2fs, ip->i_blocks);
}
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 < EXT2_NDADDR; i++)
ip->i_db[i] = ei->e2di_blocks[i];
for (i = 0; i < EXT2_NIADDR; i++)
ip->i_ib[i] = ei->e2di_blocks[EXT2_NDIR_BLOCKS + i];
}
/*
* inode to raw ext2 inode
*/
void
ext2_i2ei(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;
if (E2DI_HAS_XTIME(ip)) {
ei->e2di_ctime_extra = NSEC_TO_XTIME(ip->i_ctimensec);
ei->e2di_mtime_extra = NSEC_TO_XTIME(ip->i_mtimensec);
ei->e2di_atime_extra = NSEC_TO_XTIME(ip->i_atimensec);
ei->e2di_crtime = ip->i_birthtime;
ei->e2di_crtime_extra = NSEC_TO_XTIME(ip->i_birthnsec);
}
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_flags |= (ip->i_flag & IN_E3INDEX) ? EXT3_INDEX : 0;
ei->e2di_flags |= (ip->i_flag & IN_E4EXTENTS) ? EXT4_EXTENTS : 0;
ei->e2di_nblock = ip->i_blocks & 0xffffffff;
ei->e2di_nblock_high = ip->i_blocks >> 32 & 0xffff;
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 < EXT2_NDADDR; i++)
ei->e2di_blocks[i] = ip->i_db[i];
for (i = 0; i < EXT2_NIADDR; i++)
ei->e2di_blocks[EXT2_NDIR_BLOCKS + i] = ip->i_ib[i];
}
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