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![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
816 lines
22 KiB
C
816 lines
22 KiB
C
/*
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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 <asm/system.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/ufs_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/smp_lock.h>
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#include <linux/buffer_head.h>
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#include "swab.h"
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#include "util.h"
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#undef UFS_INODE_DEBUG
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#undef UFS_INODE_DEBUG_MORE
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#ifdef UFS_INODE_DEBUG
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#define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
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#else
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#define UFSD(x)
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#endif
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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=%d \n",ptrs,double_blocks));
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if (i_block < 0) {
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ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0");
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} else 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 begining of the filesystem.
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*/
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u64 ufs_frag_map(struct inode *inode, sector_t frag)
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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 = %lu depth = %d\n",frag,depth));
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UFSD((": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask));
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if (depth == 0)
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return 0;
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p = offsets;
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lock_kernel();
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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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unlock_kernel();
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return ret;
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}
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static struct buffer_head * ufs_inode_getfrag (struct inode *inode,
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unsigned int fragment, unsigned int new_fragment,
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unsigned int required, int *err, int metadata, long *phys, int *new)
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{
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struct ufs_inode_info *ufsi = UFS_I(inode);
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struct super_block * sb;
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struct ufs_sb_private_info * uspi;
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struct buffer_head * result;
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unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
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unsigned tmp, goal;
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__fs32 * p, * p2;
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unsigned flags = 0;
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UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u, required %u\n",
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inode->i_ino, fragment, new_fragment, required))
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sb = inode->i_sb;
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uspi = UFS_SB(sb)->s_uspi;
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flags = UFS_SB(sb)->s_flags;
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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 = ufsi->i_u1.i_data + block;
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goal = 0;
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repeat:
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tmp = fs32_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 (metadata) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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if (tmp == fs32_to_cpu(sb, *p)) {
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UFSD(("EXIT, result %u\n", 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 = tmp;
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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 = ufsi->i_u1.i_data + lastblock;
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tmp = ufs_new_fragments (inode, p2, lastfrag,
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fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, err);
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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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goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb;
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tmp = ufs_new_fragments (inode, p, fragment - blockoff,
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goal, required + blockoff, err);
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}
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/*
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* We will extend last allocated block
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*/
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else if (lastblock == block) {
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tmp = ufs_new_fragments (inode, p, fragment - (blockoff - lastblockoff),
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fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), err);
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}
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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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else /* (lastblock > block) */ {
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if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1])))
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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, uspi->s_fpb, err);
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}
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if (!tmp) {
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if ((!blockoff && *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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/* The nullification of framgents done in ufs/balloc.c is
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* something I don't have the stomache to move into here right
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* now. -DaveM
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*/
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if (metadata) {
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result = sb_getblk(inode->i_sb, tmp + blockoff);
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} else {
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*phys = tmp;
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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 %u\n", 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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static struct buffer_head * ufs_block_getfrag (struct inode *inode,
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struct buffer_head *bh, unsigned int fragment, unsigned int new_fragment,
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unsigned int blocksize, int * err, int metadata, long *phys, int *new)
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{
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struct super_block * sb;
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struct ufs_sb_private_info * uspi;
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struct buffer_head * result;
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unsigned tmp, goal, block, blockoff;
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__fs32 * p;
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sb = inode->i_sb;
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uspi = UFS_SB(sb)->s_uspi;
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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 %u, new_fragment %u\n", inode->i_ino, fragment, new_fragment))
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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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p = (__fs32 *) bh->b_data + block;
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repeat:
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tmp = fs32_to_cpu(sb, *p);
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if (tmp) {
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if (metadata) {
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result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
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if (tmp == fs32_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 = tmp;
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goto out;
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}
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}
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if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]) + uspi->s_fpb))
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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, uspi->s_fpb, err);
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if (!tmp) {
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if (fs32_to_cpu(sb, *p))
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goto repeat;
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goto out;
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}
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/* The nullification of framgents done in ufs/balloc.c is
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* something I don't have the stomache to move into here right
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* now. -DaveM
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*/
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if (metadata) {
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result = sb_getblk(sb, tmp + blockoff);
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} else {
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*phys = tmp;
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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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out:
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brelse (bh);
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UFSD(("EXIT, result %u\n", tmp + blockoff))
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return result;
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}
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/*
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* This function gets the block which contains the fragment.
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*/
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static 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_private_info * uspi = UFS_SB(sb)->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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if (!create) {
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phys64 = ufs_frag_map(inode, fragment);
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UFSD(("phys64 = %lu \n",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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lock_kernel();
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UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment))
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if (fragment < 0)
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goto abort_negative;
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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, 0, &phys, &new)
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#define GET_INODE_PTR(x) \
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ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL)
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#define GET_INDIRECT_DATABLOCK(x) \
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ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
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&err, 0, &phys, &new);
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#define GET_INDIRECT_PTR(x) \
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ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
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&err, 1, 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);
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if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
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bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
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goto get_double;
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}
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ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
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bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
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bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
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get_double:
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bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
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get_indirect:
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bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
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#undef GET_INODE_DATABLOCK
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#undef GET_INODE_PTR
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#undef GET_INDIRECT_DATABLOCK
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#undef GET_INDIRECT_PTR
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out:
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if (err)
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goto abort;
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if (new)
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set_buffer_new(bh_result);
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map_bh(bh_result, sb, phys);
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abort:
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unlock_kernel();
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return err;
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abort_negative:
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ufs_warning(sb, "ufs_get_block", "block < 0");
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goto abort;
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abort_too_big:
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ufs_warning(sb, "ufs_get_block", "block > big");
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goto abort;
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}
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|
|
struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment,
|
|
int create, int *err)
|
|
{
|
|
struct buffer_head dummy;
|
|
int error;
|
|
|
|
dummy.b_state = 0;
|
|
dummy.b_blocknr = -1000;
|
|
error = ufs_getfrag_block(inode, fragment, &dummy, create);
|
|
*err = error;
|
|
if (!error && buffer_mapped(&dummy)) {
|
|
struct buffer_head *bh;
|
|
bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
|
|
if (buffer_new(&dummy)) {
|
|
memset(bh->b_data, 0, inode->i_sb->s_blocksize);
|
|
set_buffer_uptodate(bh);
|
|
mark_buffer_dirty(bh);
|
|
}
|
|
return bh;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
|
|
int create, int * err)
|
|
{
|
|
struct buffer_head * bh;
|
|
|
|
UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment))
|
|
bh = ufs_getfrag (inode, fragment, create, err);
|
|
if (!bh || buffer_uptodate(bh))
|
|
return bh;
|
|
ll_rw_block (READ, 1, &bh);
|
|
wait_on_buffer (bh);
|
|
if (buffer_uptodate(bh))
|
|
return bh;
|
|
brelse (bh);
|
|
*err = -EIO;
|
|
return NULL;
|
|
}
|
|
|
|
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);
|
|
}
|
|
static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
|
|
{
|
|
return block_prepare_write(page,from,to,ufs_getfrag_block);
|
|
}
|
|
static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
|
|
{
|
|
return generic_block_bmap(mapping,block,ufs_getfrag_block);
|
|
}
|
|
struct address_space_operations ufs_aops = {
|
|
.readpage = ufs_readpage,
|
|
.writepage = ufs_writepage,
|
|
.sync_page = block_sync_page,
|
|
.prepare_write = ufs_prepare_write,
|
|
.commit_write = generic_commit_write,
|
|
.bmap = ufs_bmap
|
|
};
|
|
|
|
void ufs_read_inode (struct inode * inode)
|
|
{
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
struct super_block * sb;
|
|
struct ufs_sb_private_info * uspi;
|
|
struct ufs_inode * ufs_inode;
|
|
struct ufs2_inode *ufs2_inode;
|
|
struct buffer_head * bh;
|
|
mode_t mode;
|
|
unsigned i;
|
|
unsigned flags;
|
|
|
|
UFSD(("ENTER, ino %lu\n", inode->i_ino))
|
|
|
|
sb = inode->i_sb;
|
|
uspi = UFS_SB(sb)->s_uspi;
|
|
flags = UFS_SB(sb)->s_flags;
|
|
|
|
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);
|
|
goto bad_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 ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
|
|
goto ufs2_inode;
|
|
|
|
ufs_inode = (struct ufs_inode *) (bh->b_data + sizeof(struct ufs_inode) * ufs_inotofsbo(inode->i_ino));
|
|
|
|
/*
|
|
* Copy data to the in-core inode.
|
|
*/
|
|
inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
|
|
inode->i_nlink = 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);
|
|
|
|
/*
|
|
* Linux now has 32-bit uid and gid, so we can support EFT.
|
|
*/
|
|
inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
|
|
inode->i_gid = 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_blksize = PAGE_SIZE; /* This is the optimal IO size (for stat) */
|
|
inode->i_version++;
|
|
ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
|
|
ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen);
|
|
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);
|
|
ufsi->i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
|
|
|
|
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
|
|
ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i];
|
|
}
|
|
else {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
|
|
ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i];
|
|
}
|
|
ufsi->i_osync = 0;
|
|
|
|
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;
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
if (!inode->i_blocks)
|
|
inode->i_op = &ufs_fast_symlink_inode_operations;
|
|
else {
|
|
inode->i_op = &page_symlink_inode_operations;
|
|
inode->i_mapping->a_ops = &ufs_aops;
|
|
}
|
|
} else
|
|
init_special_inode(inode, inode->i_mode,
|
|
ufs_get_inode_dev(sb, ufsi));
|
|
|
|
brelse (bh);
|
|
|
|
UFSD(("EXIT\n"))
|
|
return;
|
|
|
|
bad_inode:
|
|
make_bad_inode(inode);
|
|
return;
|
|
|
|
ufs2_inode :
|
|
UFSD(("Reading ufs2 inode, ino %lu\n", inode->i_ino))
|
|
|
|
ufs2_inode = (struct ufs2_inode *)(bh->b_data + sizeof(struct ufs2_inode) * ufs_inotofsbo(inode->i_ino));
|
|
|
|
/*
|
|
* Copy data to the in-core inode.
|
|
*/
|
|
inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
|
|
inode->i_nlink = 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);
|
|
|
|
/*
|
|
* Linux now has 32-bit uid and gid, so we can support EFT.
|
|
*/
|
|
inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid);
|
|
inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid);
|
|
|
|
inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
|
|
inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_atime.tv_sec);
|
|
inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_ctime.tv_sec);
|
|
inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs2_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 = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
|
|
inode->i_blksize = PAGE_SIZE; /*This is the optimal IO size(for stat)*/
|
|
|
|
inode->i_version++;
|
|
ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
|
|
ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen);
|
|
/*
|
|
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);
|
|
*/
|
|
ufsi->i_lastfrag= (inode->i_size + uspi->s_fsize- 1) >> uspi->s_fshift;
|
|
|
|
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
|
|
ufsi->i_u1.u2_i_data[i] =
|
|
ufs2_inode->ui_u2.ui_addr.ui_db[i];
|
|
}
|
|
else {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
|
|
ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i];
|
|
}
|
|
ufsi->i_osync = 0;
|
|
|
|
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;
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
if (!inode->i_blocks)
|
|
inode->i_op = &ufs_fast_symlink_inode_operations;
|
|
else {
|
|
inode->i_op = &page_symlink_inode_operations;
|
|
inode->i_mapping->a_ops = &ufs_aops;
|
|
}
|
|
} else /* TODO : here ...*/
|
|
init_special_inode(inode, inode->i_mode,
|
|
ufs_get_inode_dev(sb, ufsi));
|
|
|
|
brelse(bh);
|
|
|
|
UFSD(("EXIT\n"))
|
|
return;
|
|
}
|
|
|
|
static int ufs_update_inode(struct inode * inode, int do_sync)
|
|
{
|
|
struct ufs_inode_info *ufsi = UFS_I(inode);
|
|
struct super_block * sb;
|
|
struct ufs_sb_private_info * uspi;
|
|
struct buffer_head * bh;
|
|
struct ufs_inode * ufs_inode;
|
|
unsigned i;
|
|
unsigned flags;
|
|
|
|
UFSD(("ENTER, ino %lu\n", inode->i_ino))
|
|
|
|
sb = inode->i_sb;
|
|
uspi = UFS_SB(sb)->s_uspi;
|
|
flags = UFS_SB(sb)->s_flags;
|
|
|
|
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;
|
|
}
|
|
ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_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, inode->i_uid);
|
|
ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
|
|
|
|
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, ufsi->i_gen);
|
|
|
|
if ((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) {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
|
|
ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i];
|
|
}
|
|
else {
|
|
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
|
|
ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i];
|
|
}
|
|
|
|
if (!inode->i_nlink)
|
|
memset (ufs_inode, 0, sizeof(struct ufs_inode));
|
|
|
|
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, int wait)
|
|
{
|
|
int ret;
|
|
lock_kernel();
|
|
ret = ufs_update_inode (inode, wait);
|
|
unlock_kernel();
|
|
return ret;
|
|
}
|
|
|
|
int ufs_sync_inode (struct inode *inode)
|
|
{
|
|
return ufs_update_inode (inode, 1);
|
|
}
|
|
|
|
void ufs_delete_inode (struct inode * inode)
|
|
{
|
|
/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
|
|
lock_kernel();
|
|
mark_inode_dirty(inode);
|
|
ufs_update_inode(inode, IS_SYNC(inode));
|
|
inode->i_size = 0;
|
|
if (inode->i_blocks)
|
|
ufs_truncate (inode);
|
|
ufs_free_inode (inode);
|
|
unlock_kernel();
|
|
}
|