911 lines
25 KiB
C
Executable File
911 lines
25 KiB
C
Executable File
/*
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* linux/fs/ufs/inode.c
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*
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* Copyright (C) 1998
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* Daniel Pirkl <daniel.pirkl@email.cz>
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* Charles University, Faculty of Mathematics and Physics
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*
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* from
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*
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* linux/fs/ext2/inode.c
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* from
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*
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* linux/fs/minix/inode.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993
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* Big-endian to little-endian byte-swapping/bitmaps by
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* David S. Miller (davem@caip.rutgers.edu), 1995
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*/
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#include <asm/uaccess.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/time.h>
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/buffer_head.h>
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#include <linux/writeback.h>
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#include "ufs_fs.h"
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#include "ufs.h"
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#include "swab.h"
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#include "util.h"
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static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock);
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static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
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{
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struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
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int ptrs = uspi->s_apb;
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int ptrs_bits = uspi->s_apbshift;
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const long direct_blocks = UFS_NDADDR,
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indirect_blocks = ptrs,
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double_blocks = (1 << (ptrs_bits * 2));
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int n = 0;
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UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
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if (i_block < direct_blocks) {
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offsets[n++] = i_block;
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} else if ((i_block -= direct_blocks) < indirect_blocks) {
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offsets[n++] = UFS_IND_BLOCK;
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offsets[n++] = i_block;
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} else if ((i_block -= indirect_blocks) < double_blocks) {
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offsets[n++] = UFS_DIND_BLOCK;
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offsets[n++] = i_block >> ptrs_bits;
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offsets[n++] = i_block & (ptrs - 1);
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} else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
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offsets[n++] = UFS_TIND_BLOCK;
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offsets[n++] = i_block >> (ptrs_bits * 2);
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offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
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offsets[n++] = i_block & (ptrs - 1);
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} else {
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ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big");
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}
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return n;
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}
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/*
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* Returns the location of the fragment from
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* the beginning of the filesystem.
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*/
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static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock)
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{
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struct ufs_inode_info *ufsi = UFS_I(inode);
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struct super_block *sb = inode->i_sb;
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struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
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u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift;
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int shift = uspi->s_apbshift-uspi->s_fpbshift;
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sector_t offsets[4], *p;
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int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
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u64 ret = 0L;
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__fs32 block;
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__fs64 u2_block = 0L;
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unsigned flags = UFS_SB(sb)->s_flags;
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u64 temp = 0L;
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UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
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UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
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uspi->s_fpbshift, uspi->s_apbmask,
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(unsigned long long)mask);
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if (depth == 0)
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return 0;
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p = offsets;
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if (needs_lock)
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lock_ufs(sb);
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if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
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goto ufs2;
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block = ufsi->i_u1.i_data[*p++];
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if (!block)
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goto out;
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while (--depth) {
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struct buffer_head *bh;
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sector_t n = *p++;
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bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
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if (!bh)
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goto out;
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block = ((__fs32 *) bh->b_data)[n & mask];
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brelse (bh);
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if (!block)
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goto out;
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}
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ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask));
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goto out;
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ufs2:
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u2_block = ufsi->i_u1.u2_i_data[*p++];
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if (!u2_block)
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goto out;
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while (--depth) {
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struct buffer_head *bh;
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sector_t n = *p++;
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temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block);
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bh = sb_bread(sb, temp +(u64) (n>>shift));
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if (!bh)
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goto out;
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u2_block = ((__fs64 *)bh->b_data)[n & mask];
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brelse(bh);
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if (!u2_block)
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goto out;
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}
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temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block);
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ret = temp + (u64) (frag & uspi->s_fpbmask);
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out:
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if (needs_lock)
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unlock_ufs(sb);
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return ret;
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}
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/**
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* ufs_inode_getfrag() - allocate new fragment(s)
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* @inode: pointer to inode
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* @fragment: number of `fragment' which hold pointer
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* to new allocated fragment(s)
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* @new_fragment: number of new allocated fragment(s)
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* @required: how many fragment(s) we require
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* @err: we set it if something wrong
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* @phys: pointer to where we save physical number of new allocated fragments,
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* NULL if we allocate not data(indirect blocks for example).
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* @new: we set it if we allocate new block
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* @locked_page: for ufs_new_fragments()
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*/
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static struct buffer_head *
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ufs_inode_getfrag(struct inode *inode, u64 fragment,
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sector_t new_fragment, unsigned int required, int *err,
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long *phys, int *new, struct page *locked_page)
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{
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struct ufs_inode_info *ufsi = UFS_I(inode);
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struct super_block *sb = inode->i_sb;
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struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
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struct buffer_head * result;
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unsigned blockoff, lastblockoff;
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u64 tmp, goal, lastfrag, block, lastblock;
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void *p, *p2;
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UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
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"metadata %d\n", inode->i_ino, (unsigned long long)fragment,
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(unsigned long long)new_fragment, required, !phys);
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/* TODO : to be done for write support
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if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
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goto ufs2;
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*/
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block = ufs_fragstoblks (fragment);
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blockoff = ufs_fragnum (fragment);
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p = ufs_get_direct_data_ptr(uspi, ufsi, block);
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goal = 0;
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repeat:
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tmp = ufs_data_ptr_to_cpu(sb, p);
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lastfrag = ufsi->i_lastfrag;
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if (tmp && fragment < lastfrag) {
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if (!phys) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
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UFSD("EXIT, result %llu\n",
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(unsigned long long)tmp + blockoff);
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return result;
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}
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brelse (result);
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goto repeat;
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} else {
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*phys = uspi->s_sbbase + tmp + blockoff;
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return NULL;
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}
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}
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lastblock = ufs_fragstoblks (lastfrag);
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lastblockoff = ufs_fragnum (lastfrag);
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/*
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* We will extend file into new block beyond last allocated block
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*/
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if (lastblock < block) {
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/*
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* We must reallocate last allocated block
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*/
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if (lastblockoff) {
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p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
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tmp = ufs_new_fragments(inode, p2, lastfrag,
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ufs_data_ptr_to_cpu(sb, p2),
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uspi->s_fpb - lastblockoff,
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err, locked_page);
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if (!tmp) {
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if (lastfrag != ufsi->i_lastfrag)
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goto repeat;
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else
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return NULL;
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}
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lastfrag = ufsi->i_lastfrag;
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}
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tmp = ufs_data_ptr_to_cpu(sb,
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ufs_get_direct_data_ptr(uspi, ufsi,
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lastblock));
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if (tmp)
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goal = tmp + uspi->s_fpb;
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tmp = ufs_new_fragments (inode, p, fragment - blockoff,
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goal, required + blockoff,
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err,
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phys != NULL ? locked_page : NULL);
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} else if (lastblock == block) {
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/*
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* We will extend last allocated block
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*/
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tmp = ufs_new_fragments(inode, p, fragment -
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(blockoff - lastblockoff),
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ufs_data_ptr_to_cpu(sb, p),
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required + (blockoff - lastblockoff),
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err, phys != NULL ? locked_page : NULL);
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} else /* (lastblock > block) */ {
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/*
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* We will allocate new block before last allocated block
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*/
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if (block) {
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tmp = ufs_data_ptr_to_cpu(sb,
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ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
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if (tmp)
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goal = tmp + uspi->s_fpb;
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}
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tmp = ufs_new_fragments(inode, p, fragment - blockoff,
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goal, uspi->s_fpb, err,
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phys != NULL ? locked_page : NULL);
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}
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if (!tmp) {
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if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
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(blockoff && lastfrag != ufsi->i_lastfrag))
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goto repeat;
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*err = -ENOSPC;
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return NULL;
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}
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if (!phys) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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} else {
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*phys = uspi->s_sbbase + tmp + blockoff;
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result = NULL;
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*err = 0;
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*new = 1;
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}
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inode->i_ctime = CURRENT_TIME_SEC;
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if (IS_SYNC(inode))
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ufs_sync_inode (inode);
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mark_inode_dirty(inode);
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UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
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return result;
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/* This part : To be implemented ....
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Required only for writing, not required for READ-ONLY.
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ufs2:
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u2_block = ufs_fragstoblks(fragment);
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u2_blockoff = ufs_fragnum(fragment);
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p = ufsi->i_u1.u2_i_data + block;
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goal = 0;
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repeat2:
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tmp = fs32_to_cpu(sb, *p);
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lastfrag = ufsi->i_lastfrag;
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*/
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}
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/**
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* ufs_inode_getblock() - allocate new block
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* @inode: pointer to inode
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* @bh: pointer to block which hold "pointer" to new allocated block
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* @fragment: number of `fragment' which hold pointer
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* to new allocated block
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* @new_fragment: number of new allocated fragment
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* (block will hold this fragment and also uspi->s_fpb-1)
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* @err: see ufs_inode_getfrag()
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* @phys: see ufs_inode_getfrag()
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* @new: see ufs_inode_getfrag()
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* @locked_page: see ufs_inode_getfrag()
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*/
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static struct buffer_head *
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ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
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u64 fragment, sector_t new_fragment, int *err,
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long *phys, int *new, struct page *locked_page)
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{
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struct super_block *sb = inode->i_sb;
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struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
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struct buffer_head * result;
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unsigned blockoff;
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u64 tmp, goal, block;
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void *p;
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block = ufs_fragstoblks (fragment);
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blockoff = ufs_fragnum (fragment);
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UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
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inode->i_ino, (unsigned long long)fragment,
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(unsigned long long)new_fragment, !phys);
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result = NULL;
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if (!bh)
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goto out;
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if (!buffer_uptodate(bh)) {
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ll_rw_block (READ, 1, &bh);
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wait_on_buffer (bh);
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if (!buffer_uptodate(bh))
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goto out;
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}
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if (uspi->fs_magic == UFS2_MAGIC)
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p = (__fs64 *)bh->b_data + block;
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else
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p = (__fs32 *)bh->b_data + block;
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repeat:
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tmp = ufs_data_ptr_to_cpu(sb, p);
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if (tmp) {
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if (!phys) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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if (tmp == ufs_data_ptr_to_cpu(sb, p))
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goto out;
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brelse (result);
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goto repeat;
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} else {
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*phys = uspi->s_sbbase + tmp + blockoff;
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goto out;
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}
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}
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if (block && (uspi->fs_magic == UFS2_MAGIC ?
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(tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
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(tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
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goal = tmp + uspi->s_fpb;
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else
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goal = bh->b_blocknr + uspi->s_fpb;
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tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
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uspi->s_fpb, err, locked_page);
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if (!tmp) {
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if (ufs_data_ptr_to_cpu(sb, p))
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goto repeat;
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goto out;
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}
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if (!phys) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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} else {
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*phys = uspi->s_sbbase + tmp + blockoff;
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*new = 1;
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}
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mark_buffer_dirty(bh);
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if (IS_SYNC(inode))
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sync_dirty_buffer(bh);
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inode->i_ctime = CURRENT_TIME_SEC;
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mark_inode_dirty(inode);
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UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
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out:
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brelse (bh);
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UFSD("EXIT\n");
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return result;
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}
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/**
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* ufs_getfrag_block() - `get_block_t' function, interface between UFS and
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* readpage, writepage and so on
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*/
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int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
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{
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struct super_block * sb = inode->i_sb;
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struct ufs_sb_info * sbi = UFS_SB(sb);
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struct ufs_sb_private_info * uspi = sbi->s_uspi;
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struct buffer_head * bh;
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int ret, err, new;
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unsigned long ptr,phys;
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u64 phys64 = 0;
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bool needs_lock = (sbi->mutex_owner != current);
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if (!create) {
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phys64 = ufs_frag_map(inode, fragment, needs_lock);
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UFSD("phys64 = %llu\n", (unsigned long long)phys64);
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if (phys64)
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map_bh(bh_result, sb, phys64);
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return 0;
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}
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/* This code entered only while writing ....? */
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err = -EIO;
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new = 0;
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ret = 0;
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bh = NULL;
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if (needs_lock)
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lock_ufs(sb);
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UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
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if (fragment >
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((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
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<< uspi->s_fpbshift))
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goto abort_too_big;
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err = 0;
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ptr = fragment;
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/*
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* ok, these macros clean the logic up a bit and make
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* it much more readable:
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*/
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#define GET_INODE_DATABLOCK(x) \
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ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
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bh_result->b_page)
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#define GET_INODE_PTR(x) \
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ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
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bh_result->b_page)
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#define GET_INDIRECT_DATABLOCK(x) \
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ufs_inode_getblock(inode, bh, x, fragment, \
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&err, &phys, &new, bh_result->b_page)
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#define GET_INDIRECT_PTR(x) \
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ufs_inode_getblock(inode, bh, x, fragment, \
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&err, NULL, NULL, NULL)
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if (ptr < UFS_NDIR_FRAGMENT) {
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bh = GET_INODE_DATABLOCK(ptr);
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goto out;
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}
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ptr -= UFS_NDIR_FRAGMENT;
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if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
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bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
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goto get_indirect;
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}
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|
ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
|
|
if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
|
|
bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
|
|
goto get_double;
|
|
}
|
|
ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
|
|
bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
|
|
bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
|
|
get_double:
|
|
bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
|
|
get_indirect:
|
|
bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
|
|
|
|
#undef GET_INODE_DATABLOCK
|
|
#undef GET_INODE_PTR
|
|
#undef GET_INDIRECT_DATABLOCK
|
|
#undef GET_INDIRECT_PTR
|
|
|
|
out:
|
|
if (err)
|
|
goto abort;
|
|
if (new)
|
|
set_buffer_new(bh_result);
|
|
map_bh(bh_result, sb, phys);
|
|
abort:
|
|
if (needs_lock)
|
|
unlock_ufs(sb);
|
|
|
|
return err;
|
|
|
|
abort_too_big:
|
|
ufs_warning(sb, "ufs_get_block", "block > big");
|
|
goto abort;
|
|
}
|
|
|
|
static int ufs_writepage(struct page *page, struct writeback_control *wbc)
|
|
{
|
|
return block_write_full_page(page,ufs_getfrag_block,wbc);
|
|
}
|
|
|
|
static int ufs_readpage(struct file *file, struct page *page)
|
|
{
|
|
return block_read_full_page(page,ufs_getfrag_block);
|
|
}
|
|
|
|
int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
|
|
{
|
|
return __block_write_begin(page, pos, len, ufs_getfrag_block);
|
|
}
|
|
|
|
static void ufs_write_failed(struct address_space *mapping, loff_t to)
|
|
{
|
|
struct inode *inode = mapping->host;
|
|
|
|
if (to > inode->i_size)
|
|
truncate_pagecache(inode, inode->i_size);
|
|
}
|
|
|
|
static int ufs_write_begin(struct file *file, struct address_space *mapping,
|
|
loff_t pos, unsigned len, unsigned flags,
|
|
struct page **pagep, void **fsdata)
|
|
{
|
|
int ret;
|
|
|
|
ret = block_write_begin(mapping, pos, len, flags, pagep,
|
|
ufs_getfrag_block);
|
|
if (unlikely(ret))
|
|
ufs_write_failed(mapping, pos + len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
|
|
{
|
|
return generic_block_bmap(mapping,block,ufs_getfrag_block);
|
|
}
|
|
|
|
const struct address_space_operations ufs_aops = {
|
|
.readpage = ufs_readpage,
|
|
.writepage = ufs_writepage,
|
|
.write_begin = ufs_write_begin,
|
|
.write_end = generic_write_end,
|
|
.bmap = ufs_bmap
|
|
};
|
|
|
|
static void ufs_set_inode_ops(struct inode *inode)
|
|
{
|
|
if (S_ISREG(inode->i_mode)) {
|
|
inode->i_op = &ufs_file_inode_operations;
|
|
inode->i_fop = &ufs_file_operations;
|
|
inode->i_mapping->a_ops = &ufs_aops;
|
|
} else if (S_ISDIR(inode->i_mode)) {
|
|
inode->i_op = &ufs_dir_inode_operations;
|
|
inode->i_fop = &ufs_dir_operations;
|
|
inode->i_mapping->a_ops = &ufs_aops;
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
if (!inode->i_blocks)
|
|
inode->i_op = &ufs_fast_symlink_inode_operations;
|
|
else {
|
|
inode->i_op = &ufs_symlink_inode_operations;
|
|
inode->i_mapping->a_ops = &ufs_aops;
|
|
}
|
|
} else
|
|
init_special_inode(inode, inode->i_mode,
|
|
ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
|
|
}
|
|
|
|
static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
|
|
{
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
struct super_block *sb = inode->i_sb;
|
|
umode_t mode;
|
|
|
|
/*
|
|
* Copy data to the in-core inode.
|
|
*/
|
|
inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
|
|
set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink));
|
|
if (inode->i_nlink == 0) {
|
|
ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Linux now has 32-bit uid and gid, so we can support EFT.
|
|
*/
|
|
i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode));
|
|
i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode));
|
|
|
|
inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
|
|
inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
|
|
inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
|
|
inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
|
|
inode->i_mtime.tv_nsec = 0;
|
|
inode->i_atime.tv_nsec = 0;
|
|
inode->i_ctime.tv_nsec = 0;
|
|
inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
|
|
inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
|
|
ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
|
|
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
|
|
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
|
|
|
|
|
|
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
|
|
memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
|
|
sizeof(ufs_inode->ui_u2.ui_addr));
|
|
} else {
|
|
memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
|
|
sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
|
|
ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
|
|
{
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
struct super_block *sb = inode->i_sb;
|
|
umode_t mode;
|
|
|
|
UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
|
|
/*
|
|
* Copy data to the in-core inode.
|
|
*/
|
|
inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
|
|
set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink));
|
|
if (inode->i_nlink == 0) {
|
|
ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Linux now has 32-bit uid and gid, so we can support EFT.
|
|
*/
|
|
i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid));
|
|
i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid));
|
|
|
|
inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
|
|
inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
|
|
inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
|
|
inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
|
|
inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
|
|
inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
|
|
inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
|
|
inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
|
|
inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
|
|
ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
|
|
/*
|
|
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
|
|
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
|
|
*/
|
|
|
|
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
|
|
memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
|
|
sizeof(ufs2_inode->ui_u2.ui_addr));
|
|
} else {
|
|
memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
|
|
sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
|
|
ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
|
|
{
|
|
struct ufs_inode_info *ufsi;
|
|
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
|
|
struct buffer_head * bh;
|
|
struct inode *inode;
|
|
int err;
|
|
|
|
UFSD("ENTER, ino %lu\n", ino);
|
|
|
|
if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
|
|
ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
|
|
ino);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
|
|
inode = iget_locked(sb, ino);
|
|
if (!inode)
|
|
return ERR_PTR(-ENOMEM);
|
|
if (!(inode->i_state & I_NEW))
|
|
return inode;
|
|
|
|
ufsi = UFS_I(inode);
|
|
|
|
bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
|
|
if (!bh) {
|
|
ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
|
|
inode->i_ino);
|
|
goto bad_inode;
|
|
}
|
|
if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
|
|
struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
|
|
|
|
err = ufs2_read_inode(inode,
|
|
ufs2_inode + ufs_inotofsbo(inode->i_ino));
|
|
} else {
|
|
struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
|
|
|
|
err = ufs1_read_inode(inode,
|
|
ufs_inode + ufs_inotofsbo(inode->i_ino));
|
|
}
|
|
|
|
if (err)
|
|
goto bad_inode;
|
|
inode->i_version++;
|
|
ufsi->i_lastfrag =
|
|
(inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
|
|
ufsi->i_dir_start_lookup = 0;
|
|
ufsi->i_osync = 0;
|
|
|
|
ufs_set_inode_ops(inode);
|
|
|
|
brelse(bh);
|
|
|
|
UFSD("EXIT\n");
|
|
unlock_new_inode(inode);
|
|
return inode;
|
|
|
|
bad_inode:
|
|
iget_failed(inode);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
|
|
static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
|
|
ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
|
|
ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
|
|
|
|
ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode));
|
|
ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode));
|
|
|
|
ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
|
|
ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
|
|
ufs_inode->ui_atime.tv_usec = 0;
|
|
ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
|
|
ufs_inode->ui_ctime.tv_usec = 0;
|
|
ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
|
|
ufs_inode->ui_mtime.tv_usec = 0;
|
|
ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
|
|
ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
|
|
ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
|
|
|
|
if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
|
|
ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
|
|
ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
|
|
}
|
|
|
|
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
|
|
/* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
|
|
ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0];
|
|
} else if (inode->i_blocks) {
|
|
memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
|
|
sizeof(ufs_inode->ui_u2.ui_addr));
|
|
}
|
|
else {
|
|
memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
|
|
sizeof(ufs_inode->ui_u2.ui_symlink));
|
|
}
|
|
|
|
if (!inode->i_nlink)
|
|
memset (ufs_inode, 0, sizeof(struct ufs_inode));
|
|
}
|
|
|
|
static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
|
|
UFSD("ENTER\n");
|
|
ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
|
|
ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
|
|
|
|
ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode));
|
|
ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode));
|
|
|
|
ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
|
|
ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
|
|
ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
|
|
ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
|
|
ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
|
|
ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
|
|
ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
|
|
|
|
ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
|
|
ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
|
|
ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
|
|
|
|
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
|
|
/* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
|
|
ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
|
|
} else if (inode->i_blocks) {
|
|
memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
|
|
sizeof(ufs_inode->ui_u2.ui_addr));
|
|
} else {
|
|
memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
|
|
sizeof(ufs_inode->ui_u2.ui_symlink));
|
|
}
|
|
|
|
if (!inode->i_nlink)
|
|
memset (ufs_inode, 0, sizeof(struct ufs2_inode));
|
|
UFSD("EXIT\n");
|
|
}
|
|
|
|
static int ufs_update_inode(struct inode * inode, int do_sync)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
|
|
struct buffer_head * bh;
|
|
|
|
UFSD("ENTER, ino %lu\n", inode->i_ino);
|
|
|
|
if (inode->i_ino < UFS_ROOTINO ||
|
|
inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
|
|
ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
|
|
return -1;
|
|
}
|
|
|
|
bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
|
|
if (!bh) {
|
|
ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
|
|
return -1;
|
|
}
|
|
if (uspi->fs_magic == UFS2_MAGIC) {
|
|
struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
|
|
|
|
ufs2_update_inode(inode,
|
|
ufs2_inode + ufs_inotofsbo(inode->i_ino));
|
|
} else {
|
|
struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
|
|
|
|
ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
|
|
}
|
|
|
|
mark_buffer_dirty(bh);
|
|
if (do_sync)
|
|
sync_dirty_buffer(bh);
|
|
brelse (bh);
|
|
|
|
UFSD("EXIT\n");
|
|
return 0;
|
|
}
|
|
|
|
int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
|
|
{
|
|
int ret;
|
|
lock_ufs(inode->i_sb);
|
|
ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
|
|
unlock_ufs(inode->i_sb);
|
|
return ret;
|
|
}
|
|
|
|
int ufs_sync_inode (struct inode *inode)
|
|
{
|
|
return ufs_update_inode (inode, 1);
|
|
}
|
|
|
|
void ufs_evict_inode(struct inode * inode)
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{
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int want_delete = 0;
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if (!inode->i_nlink && !is_bad_inode(inode))
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want_delete = 1;
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truncate_inode_pages_final(&inode->i_data);
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if (want_delete) {
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loff_t old_i_size;
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/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
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lock_ufs(inode->i_sb);
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mark_inode_dirty(inode);
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ufs_update_inode(inode, IS_SYNC(inode));
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old_i_size = inode->i_size;
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inode->i_size = 0;
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if (inode->i_blocks && ufs_truncate(inode, old_i_size))
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ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
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unlock_ufs(inode->i_sb);
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}
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invalidate_inode_buffers(inode);
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clear_inode(inode);
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if (want_delete) {
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lock_ufs(inode->i_sb);
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ufs_free_inode(inode);
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unlock_ufs(inode->i_sb);
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}
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}
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