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linux-stable/fs/ufs/inode.c
Christoph Hellwig 907f4554e2 dquot: move dquot initialization responsibility into the filesystem 
Currently various places in the VFS call vfs_dq_init directly.  This means
we tie the quota code into the VFS.  Get rid of that and make the
filesystem responsible for the initialization.   For most metadata operations
this is a straight forward move into the methods, but for truncate and
open it's a bit more complicated.

For truncate we currently only call vfs_dq_init for the sys_truncate case
because open already takes care of it for ftruncate and open(O_TRUNC) - the
new code causes an additional vfs_dq_init for those which is harmless.

For open the initialization is moved from do_filp_open into the open method,
which means it happens slightly earlier now, and only for regular files.
The latter is fine because we don't need to initialize it for operations
on special files, and we already do it as part of the namespace operations
for directories.

Add a dquot_file_open helper that filesystems that support generic quotas
can use to fill in ->open.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
2010-03-05 00:20:30 +01:00

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/*
* linux/fs/ufs/inode.c
*
* Copyright (C) 1998
* Daniel Pirkl <daniel.pirkl@email.cz>
* Charles University, Faculty of Mathematics and Physics
*
* from
*
* linux/fs/ext2/inode.c
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* Laboratoire MASI - Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* from
*
* linux/fs/minix/inode.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993
* Big-endian to little-endian byte-swapping/bitmaps by
* David S. Miller (davem@caip.rutgers.edu), 1995
*/
#include <asm/uaccess.h>
#include <asm/system.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/quotaops.h>
#include "ufs_fs.h"
#include "ufs.h"
#include "swab.h"
#include "util.h"
static u64 ufs_frag_map(struct inode *inode, sector_t frag);
static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
{
struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
int ptrs = uspi->s_apb;
int ptrs_bits = uspi->s_apbshift;
const long direct_blocks = UFS_NDADDR,
indirect_blocks = ptrs,
double_blocks = (1 << (ptrs_bits * 2));
int n = 0;
UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
if (i_block < direct_blocks) {
offsets[n++] = i_block;
} else if ((i_block -= direct_blocks) < indirect_blocks) {
offsets[n++] = UFS_IND_BLOCK;
offsets[n++] = i_block;
} else if ((i_block -= indirect_blocks) < double_blocks) {
offsets[n++] = UFS_DIND_BLOCK;
offsets[n++] = i_block >> ptrs_bits;
offsets[n++] = i_block & (ptrs - 1);
} else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
offsets[n++] = UFS_TIND_BLOCK;
offsets[n++] = i_block >> (ptrs_bits * 2);
offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
offsets[n++] = i_block & (ptrs - 1);
} else {
ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big");
}
return n;
}
/*
* Returns the location of the fragment from
* the begining of the filesystem.
*/
static u64 ufs_frag_map(struct inode *inode, sector_t frag)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift;
int shift = uspi->s_apbshift-uspi->s_fpbshift;
sector_t offsets[4], *p;
int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
u64 ret = 0L;
__fs32 block;
__fs64 u2_block = 0L;
unsigned flags = UFS_SB(sb)->s_flags;
u64 temp = 0L;
UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
uspi->s_fpbshift, uspi->s_apbmask,
(unsigned long long)mask);
if (depth == 0)
return 0;
p = offsets;
lock_kernel();
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
block = ufsi->i_u1.i_data[*p++];
if (!block)
goto out;
while (--depth) {
struct buffer_head *bh;
sector_t n = *p++;
bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
if (!bh)
goto out;
block = ((__fs32 *) bh->b_data)[n & mask];
brelse (bh);
if (!block)
goto out;
}
ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask));
goto out;
ufs2:
u2_block = ufsi->i_u1.u2_i_data[*p++];
if (!u2_block)
goto out;
while (--depth) {
struct buffer_head *bh;
sector_t n = *p++;
temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block);
bh = sb_bread(sb, temp +(u64) (n>>shift));
if (!bh)
goto out;
u2_block = ((__fs64 *)bh->b_data)[n & mask];
brelse(bh);
if (!u2_block)
goto out;
}
temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block);
ret = temp + (u64) (frag & uspi->s_fpbmask);
out:
unlock_kernel();
return ret;
}
/**
* ufs_inode_getfrag() - allocate new fragment(s)
* @inode - pointer to inode
* @fragment - number of `fragment' which hold pointer
* to new allocated fragment(s)
* @new_fragment - number of new allocated fragment(s)
* @required - how many fragment(s) we require
* @err - we set it if something wrong
* @phys - pointer to where we save physical number of new allocated fragments,
* NULL if we allocate not data(indirect blocks for example).
* @new - we set it if we allocate new block
* @locked_page - for ufs_new_fragments()
*/
static struct buffer_head *
ufs_inode_getfrag(struct inode *inode, u64 fragment,
sector_t new_fragment, unsigned int required, int *err,
long *phys, int *new, struct page *locked_page)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned blockoff, lastblockoff;
u64 tmp, goal, lastfrag, block, lastblock;
void *p, *p2;
UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
"metadata %d\n", inode->i_ino, (unsigned long long)fragment,
(unsigned long long)new_fragment, required, !phys);
/* TODO : to be done for write support
if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
*/
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
p = ufs_get_direct_data_ptr(uspi, ufsi, block);
goal = 0;
repeat:
tmp = ufs_data_ptr_to_cpu(sb, p);
lastfrag = ufsi->i_lastfrag;
if (tmp && fragment < lastfrag) {
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
UFSD("EXIT, result %llu\n",
(unsigned long long)tmp + blockoff);
return result;
}
brelse (result);
goto repeat;
} else {
*phys = uspi->s_sbbase + tmp + blockoff;
return NULL;
}
}
lastblock = ufs_fragstoblks (lastfrag);
lastblockoff = ufs_fragnum (lastfrag);
/*
* We will extend file into new block beyond last allocated block
*/
if (lastblock < block) {
/*
* We must reallocate last allocated block
*/
if (lastblockoff) {
p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
tmp = ufs_new_fragments(inode, p2, lastfrag,
ufs_data_ptr_to_cpu(sb, p2),
uspi->s_fpb - lastblockoff,
err, locked_page);
if (!tmp) {
if (lastfrag != ufsi->i_lastfrag)
goto repeat;
else
return NULL;
}
lastfrag = ufsi->i_lastfrag;
}
tmp = ufs_data_ptr_to_cpu(sb,
ufs_get_direct_data_ptr(uspi, ufsi,
lastblock));
if (tmp)
goal = tmp + uspi->s_fpb;
tmp = ufs_new_fragments (inode, p, fragment - blockoff,
goal, required + blockoff,
err,
phys != NULL ? locked_page : NULL);
} else if (lastblock == block) {
/*
* We will extend last allocated block
*/
tmp = ufs_new_fragments(inode, p, fragment -
(blockoff - lastblockoff),
ufs_data_ptr_to_cpu(sb, p),
required + (blockoff - lastblockoff),
err, phys != NULL ? locked_page : NULL);
} else /* (lastblock > block) */ {
/*
* We will allocate new block before last allocated block
*/
if (block) {
tmp = ufs_data_ptr_to_cpu(sb,
ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
if (tmp)
goal = tmp + uspi->s_fpb;
}
tmp = ufs_new_fragments(inode, p, fragment - blockoff,
goal, uspi->s_fpb, err,
phys != NULL ? locked_page : NULL);
}
if (!tmp) {
if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
(blockoff && lastfrag != ufsi->i_lastfrag))
goto repeat;
*err = -ENOSPC;
return NULL;
}
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
} else {
*phys = uspi->s_sbbase + tmp + blockoff;
result = NULL;
*err = 0;
*new = 1;
}
inode->i_ctime = CURRENT_TIME_SEC;
if (IS_SYNC(inode))
ufs_sync_inode (inode);
mark_inode_dirty(inode);
UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
return result;
/* This part : To be implemented ....
Required only for writing, not required for READ-ONLY.
ufs2:
u2_block = ufs_fragstoblks(fragment);
u2_blockoff = ufs_fragnum(fragment);
p = ufsi->i_u1.u2_i_data + block;
goal = 0;
repeat2:
tmp = fs32_to_cpu(sb, *p);
lastfrag = ufsi->i_lastfrag;
*/
}
/**
* ufs_inode_getblock() - allocate new block
* @inode - pointer to inode
* @bh - pointer to block which hold "pointer" to new allocated block
* @fragment - number of `fragment' which hold pointer
* to new allocated block
* @new_fragment - number of new allocated fragment
* (block will hold this fragment and also uspi->s_fpb-1)
* @err - see ufs_inode_getfrag()
* @phys - see ufs_inode_getfrag()
* @new - see ufs_inode_getfrag()
* @locked_page - see ufs_inode_getfrag()
*/
static struct buffer_head *
ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
u64 fragment, sector_t new_fragment, int *err,
long *phys, int *new, struct page *locked_page)
{
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned blockoff;
u64 tmp, goal, block;
void *p;
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
inode->i_ino, (unsigned long long)fragment,
(unsigned long long)new_fragment, !phys);
result = NULL;
if (!bh)
goto out;
if (!buffer_uptodate(bh)) {
ll_rw_block (READ, 1, &bh);
wait_on_buffer (bh);
if (!buffer_uptodate(bh))
goto out;
}
if (uspi->fs_magic == UFS2_MAGIC)
p = (__fs64 *)bh->b_data + block;
else
p = (__fs32 *)bh->b_data + block;
repeat:
tmp = ufs_data_ptr_to_cpu(sb, p);
if (tmp) {
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == ufs_data_ptr_to_cpu(sb, p))
goto out;
brelse (result);
goto repeat;
} else {
*phys = uspi->s_sbbase + tmp + blockoff;
goto out;
}
}
if (block && (uspi->fs_magic == UFS2_MAGIC ?
(tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
(tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
uspi->s_fpb, err, locked_page);
if (!tmp) {
if (ufs_data_ptr_to_cpu(sb, p))
goto repeat;
goto out;
}
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
} else {
*phys = uspi->s_sbbase + tmp + blockoff;
*new = 1;
}
mark_buffer_dirty(bh);
if (IS_SYNC(inode))
sync_dirty_buffer(bh);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
out:
brelse (bh);
UFSD("EXIT\n");
return result;
}
/**
* ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and
* readpage, writepage and so on
*/
int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
struct super_block * sb = inode->i_sb;
struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * bh;
int ret, err, new;
unsigned long ptr,phys;
u64 phys64 = 0;
if (!create) {
phys64 = ufs_frag_map(inode, fragment);
UFSD("phys64 = %llu\n", (unsigned long long)phys64);
if (phys64)
map_bh(bh_result, sb, phys64);
return 0;
}
/* This code entered only while writing ....? */
err = -EIO;
new = 0;
ret = 0;
bh = NULL;
lock_kernel();
UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
if (fragment >
((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
<< uspi->s_fpbshift))
goto abort_too_big;
err = 0;
ptr = fragment;
/*
* ok, these macros clean the logic up a bit and make
* it much more readable:
*/
#define GET_INODE_DATABLOCK(x) \
ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
bh_result->b_page)
#define GET_INODE_PTR(x) \
ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
bh_result->b_page)
#define GET_INDIRECT_DATABLOCK(x) \
ufs_inode_getblock(inode, bh, x, fragment, \
&err, &phys, &new, bh_result->b_page)
#define GET_INDIRECT_PTR(x) \
ufs_inode_getblock(inode, bh, x, fragment, \
&err, NULL, NULL, NULL)
if (ptr < UFS_NDIR_FRAGMENT) {
bh = GET_INODE_DATABLOCK(ptr);
goto out;
}
ptr -= UFS_NDIR_FRAGMENT;
if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
goto get_indirect;
}
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:
unlock_kernel();
return err;
abort_too_big:
ufs_warning(sb, "ufs_get_block", "block > big");
goto abort;
}
static 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);
}
int __ufs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
ufs_getfrag_block);
}
static int ufs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
*pagep = NULL;
return __ufs_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
}
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,
.sync_page = block_sync_page,
.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 = &page_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;
mode_t mode;
/*
* 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);
return -1;
}
/*
* 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_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;
mode_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);
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);
return -1;
}
/*
* 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 = 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, 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, 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, inode->i_uid);
ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
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, 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)
{
loff_t old_i_size;
if (!is_bad_inode(inode))
vfs_dq_init(inode);
truncate_inode_pages(&inode->i_data, 0);
if (is_bad_inode(inode))
goto no_delete;
/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
lock_kernel();
mark_inode_dirty(inode);
ufs_update_inode(inode, IS_SYNC(inode));
old_i_size = inode->i_size;
inode->i_size = 0;
if (inode->i_blocks && ufs_truncate(inode, old_i_size))
ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
ufs_free_inode (inode);
unlock_kernel();
return;
no_delete:
clear_inode(inode); /* We must guarantee clearing of inode... */
}
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