forked from Minki/linux
1025774ce4
Replace inode_setattr with opencoded variants of it in all callers. This moves the remaining call to vmtruncate into the filesystem methods where it can be replaced with the proper truncate sequence. In a few cases it was obvious that we would never end up calling vmtruncate so it was left out in the opencoded variant: spufs: explicitly checks for ATTR_SIZE earlier btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above In addition to that ncpfs called inode_setattr with handcrafted iattrs, which allowed to trim down the opencoded variant. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
573 lines
16 KiB
C
573 lines
16 KiB
C
/*
|
|
* linux/fs/hfsplus/inode.c
|
|
*
|
|
* Copyright (C) 2001
|
|
* Brad Boyer (flar@allandria.com)
|
|
* (C) 2003 Ardis Technologies <roman@ardistech.com>
|
|
*
|
|
* Inode handling routines
|
|
*/
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/mpage.h>
|
|
#include <linux/sched.h>
|
|
|
|
#include "hfsplus_fs.h"
|
|
#include "hfsplus_raw.h"
|
|
|
|
static int hfsplus_readpage(struct file *file, struct page *page)
|
|
{
|
|
return block_read_full_page(page, hfsplus_get_block);
|
|
}
|
|
|
|
static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
|
|
{
|
|
return block_write_full_page(page, hfsplus_get_block, wbc);
|
|
}
|
|
|
|
static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
|
|
loff_t pos, unsigned len, unsigned flags,
|
|
struct page **pagep, void **fsdata)
|
|
{
|
|
int ret;
|
|
|
|
*pagep = NULL;
|
|
ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
|
|
hfsplus_get_block,
|
|
&HFSPLUS_I(mapping->host).phys_size);
|
|
if (unlikely(ret)) {
|
|
loff_t isize = mapping->host->i_size;
|
|
if (pos + len > isize)
|
|
vmtruncate(mapping->host, isize);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
|
|
{
|
|
return generic_block_bmap(mapping, block, hfsplus_get_block);
|
|
}
|
|
|
|
static int hfsplus_releasepage(struct page *page, gfp_t mask)
|
|
{
|
|
struct inode *inode = page->mapping->host;
|
|
struct super_block *sb = inode->i_sb;
|
|
struct hfs_btree *tree;
|
|
struct hfs_bnode *node;
|
|
u32 nidx;
|
|
int i, res = 1;
|
|
|
|
switch (inode->i_ino) {
|
|
case HFSPLUS_EXT_CNID:
|
|
tree = HFSPLUS_SB(sb).ext_tree;
|
|
break;
|
|
case HFSPLUS_CAT_CNID:
|
|
tree = HFSPLUS_SB(sb).cat_tree;
|
|
break;
|
|
case HFSPLUS_ATTR_CNID:
|
|
tree = HFSPLUS_SB(sb).attr_tree;
|
|
break;
|
|
default:
|
|
BUG();
|
|
return 0;
|
|
}
|
|
if (!tree)
|
|
return 0;
|
|
if (tree->node_size >= PAGE_CACHE_SIZE) {
|
|
nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
|
|
spin_lock(&tree->hash_lock);
|
|
node = hfs_bnode_findhash(tree, nidx);
|
|
if (!node)
|
|
;
|
|
else if (atomic_read(&node->refcnt))
|
|
res = 0;
|
|
if (res && node) {
|
|
hfs_bnode_unhash(node);
|
|
hfs_bnode_free(node);
|
|
}
|
|
spin_unlock(&tree->hash_lock);
|
|
} else {
|
|
nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
|
|
i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
|
|
spin_lock(&tree->hash_lock);
|
|
do {
|
|
node = hfs_bnode_findhash(tree, nidx++);
|
|
if (!node)
|
|
continue;
|
|
if (atomic_read(&node->refcnt)) {
|
|
res = 0;
|
|
break;
|
|
}
|
|
hfs_bnode_unhash(node);
|
|
hfs_bnode_free(node);
|
|
} while (--i && nidx < tree->node_count);
|
|
spin_unlock(&tree->hash_lock);
|
|
}
|
|
return res ? try_to_free_buffers(page) : 0;
|
|
}
|
|
|
|
static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
|
|
const struct iovec *iov, loff_t offset, unsigned long nr_segs)
|
|
{
|
|
struct file *file = iocb->ki_filp;
|
|
struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
|
|
ssize_t ret;
|
|
|
|
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
|
|
offset, nr_segs, hfsplus_get_block, NULL);
|
|
|
|
/*
|
|
* In case of error extending write may have instantiated a few
|
|
* blocks outside i_size. Trim these off again.
|
|
*/
|
|
if (unlikely((rw & WRITE) && ret < 0)) {
|
|
loff_t isize = i_size_read(inode);
|
|
loff_t end = offset + iov_length(iov, nr_segs);
|
|
|
|
if (end > isize)
|
|
vmtruncate(inode, isize);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int hfsplus_writepages(struct address_space *mapping,
|
|
struct writeback_control *wbc)
|
|
{
|
|
return mpage_writepages(mapping, wbc, hfsplus_get_block);
|
|
}
|
|
|
|
const struct address_space_operations hfsplus_btree_aops = {
|
|
.readpage = hfsplus_readpage,
|
|
.writepage = hfsplus_writepage,
|
|
.sync_page = block_sync_page,
|
|
.write_begin = hfsplus_write_begin,
|
|
.write_end = generic_write_end,
|
|
.bmap = hfsplus_bmap,
|
|
.releasepage = hfsplus_releasepage,
|
|
};
|
|
|
|
const struct address_space_operations hfsplus_aops = {
|
|
.readpage = hfsplus_readpage,
|
|
.writepage = hfsplus_writepage,
|
|
.sync_page = block_sync_page,
|
|
.write_begin = hfsplus_write_begin,
|
|
.write_end = generic_write_end,
|
|
.bmap = hfsplus_bmap,
|
|
.direct_IO = hfsplus_direct_IO,
|
|
.writepages = hfsplus_writepages,
|
|
};
|
|
|
|
const struct dentry_operations hfsplus_dentry_operations = {
|
|
.d_hash = hfsplus_hash_dentry,
|
|
.d_compare = hfsplus_compare_dentry,
|
|
};
|
|
|
|
static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
|
|
struct nameidata *nd)
|
|
{
|
|
struct hfs_find_data fd;
|
|
struct super_block *sb = dir->i_sb;
|
|
struct inode *inode = NULL;
|
|
int err;
|
|
|
|
if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
|
|
goto out;
|
|
|
|
inode = HFSPLUS_I(dir).rsrc_inode;
|
|
if (inode)
|
|
goto out;
|
|
|
|
inode = new_inode(sb);
|
|
if (!inode)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
inode->i_ino = dir->i_ino;
|
|
INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
|
|
mutex_init(&HFSPLUS_I(inode).extents_lock);
|
|
HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
|
|
|
|
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
|
|
err = hfsplus_find_cat(sb, dir->i_ino, &fd);
|
|
if (!err)
|
|
err = hfsplus_cat_read_inode(inode, &fd);
|
|
hfs_find_exit(&fd);
|
|
if (err) {
|
|
iput(inode);
|
|
return ERR_PTR(err);
|
|
}
|
|
HFSPLUS_I(inode).rsrc_inode = dir;
|
|
HFSPLUS_I(dir).rsrc_inode = inode;
|
|
igrab(dir);
|
|
hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
|
|
mark_inode_dirty(inode);
|
|
out:
|
|
d_add(dentry, inode);
|
|
return NULL;
|
|
}
|
|
|
|
static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
u16 mode;
|
|
|
|
mode = be16_to_cpu(perms->mode);
|
|
|
|
inode->i_uid = be32_to_cpu(perms->owner);
|
|
if (!inode->i_uid && !mode)
|
|
inode->i_uid = HFSPLUS_SB(sb).uid;
|
|
|
|
inode->i_gid = be32_to_cpu(perms->group);
|
|
if (!inode->i_gid && !mode)
|
|
inode->i_gid = HFSPLUS_SB(sb).gid;
|
|
|
|
if (dir) {
|
|
mode = mode ? (mode & S_IALLUGO) :
|
|
(S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
|
|
mode |= S_IFDIR;
|
|
} else if (!mode)
|
|
mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
|
|
~(HFSPLUS_SB(sb).umask));
|
|
inode->i_mode = mode;
|
|
|
|
HFSPLUS_I(inode).rootflags = perms->rootflags;
|
|
HFSPLUS_I(inode).userflags = perms->userflags;
|
|
if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
|
|
inode->i_flags |= S_IMMUTABLE;
|
|
else
|
|
inode->i_flags &= ~S_IMMUTABLE;
|
|
if (perms->rootflags & HFSPLUS_FLG_APPEND)
|
|
inode->i_flags |= S_APPEND;
|
|
else
|
|
inode->i_flags &= ~S_APPEND;
|
|
}
|
|
|
|
static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
|
|
{
|
|
if (inode->i_flags & S_IMMUTABLE)
|
|
perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
|
|
else
|
|
perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
|
|
if (inode->i_flags & S_APPEND)
|
|
perms->rootflags |= HFSPLUS_FLG_APPEND;
|
|
else
|
|
perms->rootflags &= ~HFSPLUS_FLG_APPEND;
|
|
perms->userflags = HFSPLUS_I(inode).userflags;
|
|
perms->mode = cpu_to_be16(inode->i_mode);
|
|
perms->owner = cpu_to_be32(inode->i_uid);
|
|
perms->group = cpu_to_be32(inode->i_gid);
|
|
perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
|
|
}
|
|
|
|
static int hfsplus_file_open(struct inode *inode, struct file *file)
|
|
{
|
|
if (HFSPLUS_IS_RSRC(inode))
|
|
inode = HFSPLUS_I(inode).rsrc_inode;
|
|
if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
|
|
return -EOVERFLOW;
|
|
atomic_inc(&HFSPLUS_I(inode).opencnt);
|
|
return 0;
|
|
}
|
|
|
|
static int hfsplus_file_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
|
|
if (HFSPLUS_IS_RSRC(inode))
|
|
inode = HFSPLUS_I(inode).rsrc_inode;
|
|
if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
|
|
mutex_lock(&inode->i_mutex);
|
|
hfsplus_file_truncate(inode);
|
|
if (inode->i_flags & S_DEAD) {
|
|
hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
|
|
hfsplus_delete_inode(inode);
|
|
}
|
|
mutex_unlock(&inode->i_mutex);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int error;
|
|
|
|
error = inode_change_ok(inode, attr);
|
|
if (error)
|
|
return error;
|
|
|
|
if ((attr->ia_valid & ATTR_SIZE) &&
|
|
attr->ia_size != i_size_read(inode)) {
|
|
error = vmtruncate(inode, attr->ia_size);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
setattr_copy(inode, attr);
|
|
mark_inode_dirty(inode);
|
|
return 0;
|
|
}
|
|
|
|
static const struct inode_operations hfsplus_file_inode_operations = {
|
|
.lookup = hfsplus_file_lookup,
|
|
.truncate = hfsplus_file_truncate,
|
|
.setattr = hfsplus_setattr,
|
|
.setxattr = hfsplus_setxattr,
|
|
.getxattr = hfsplus_getxattr,
|
|
.listxattr = hfsplus_listxattr,
|
|
};
|
|
|
|
static const struct file_operations hfsplus_file_operations = {
|
|
.llseek = generic_file_llseek,
|
|
.read = do_sync_read,
|
|
.aio_read = generic_file_aio_read,
|
|
.write = do_sync_write,
|
|
.aio_write = generic_file_aio_write,
|
|
.mmap = generic_file_mmap,
|
|
.splice_read = generic_file_splice_read,
|
|
.fsync = file_fsync,
|
|
.open = hfsplus_file_open,
|
|
.release = hfsplus_file_release,
|
|
.unlocked_ioctl = hfsplus_ioctl,
|
|
};
|
|
|
|
struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
|
|
{
|
|
struct inode *inode = new_inode(sb);
|
|
if (!inode)
|
|
return NULL;
|
|
|
|
inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
|
|
inode->i_mode = mode;
|
|
inode->i_uid = current_fsuid();
|
|
inode->i_gid = current_fsgid();
|
|
inode->i_nlink = 1;
|
|
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
|
|
INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
|
|
mutex_init(&HFSPLUS_I(inode).extents_lock);
|
|
atomic_set(&HFSPLUS_I(inode).opencnt, 0);
|
|
HFSPLUS_I(inode).flags = 0;
|
|
memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
|
|
memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
|
|
HFSPLUS_I(inode).alloc_blocks = 0;
|
|
HFSPLUS_I(inode).first_blocks = 0;
|
|
HFSPLUS_I(inode).cached_start = 0;
|
|
HFSPLUS_I(inode).cached_blocks = 0;
|
|
HFSPLUS_I(inode).phys_size = 0;
|
|
HFSPLUS_I(inode).fs_blocks = 0;
|
|
HFSPLUS_I(inode).rsrc_inode = NULL;
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
inode->i_size = 2;
|
|
HFSPLUS_SB(sb).folder_count++;
|
|
inode->i_op = &hfsplus_dir_inode_operations;
|
|
inode->i_fop = &hfsplus_dir_operations;
|
|
} else if (S_ISREG(inode->i_mode)) {
|
|
HFSPLUS_SB(sb).file_count++;
|
|
inode->i_op = &hfsplus_file_inode_operations;
|
|
inode->i_fop = &hfsplus_file_operations;
|
|
inode->i_mapping->a_ops = &hfsplus_aops;
|
|
HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
HFSPLUS_SB(sb).file_count++;
|
|
inode->i_op = &page_symlink_inode_operations;
|
|
inode->i_mapping->a_ops = &hfsplus_aops;
|
|
HFSPLUS_I(inode).clump_blocks = 1;
|
|
} else
|
|
HFSPLUS_SB(sb).file_count++;
|
|
insert_inode_hash(inode);
|
|
mark_inode_dirty(inode);
|
|
sb->s_dirt = 1;
|
|
|
|
return inode;
|
|
}
|
|
|
|
void hfsplus_delete_inode(struct inode *inode)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
HFSPLUS_SB(sb).folder_count--;
|
|
sb->s_dirt = 1;
|
|
return;
|
|
}
|
|
HFSPLUS_SB(sb).file_count--;
|
|
if (S_ISREG(inode->i_mode)) {
|
|
if (!inode->i_nlink) {
|
|
inode->i_size = 0;
|
|
hfsplus_file_truncate(inode);
|
|
}
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
inode->i_size = 0;
|
|
hfsplus_file_truncate(inode);
|
|
}
|
|
sb->s_dirt = 1;
|
|
}
|
|
|
|
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
u32 count;
|
|
int i;
|
|
|
|
memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
|
|
sizeof(hfsplus_extent_rec));
|
|
for (count = 0, i = 0; i < 8; i++)
|
|
count += be32_to_cpu(fork->extents[i].block_count);
|
|
HFSPLUS_I(inode).first_blocks = count;
|
|
memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
|
|
HFSPLUS_I(inode).cached_start = 0;
|
|
HFSPLUS_I(inode).cached_blocks = 0;
|
|
|
|
HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
|
|
inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
|
|
HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
|
|
inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
|
|
HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
|
|
if (!HFSPLUS_I(inode).clump_blocks)
|
|
HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
|
|
HFSPLUS_SB(sb).data_clump_blocks;
|
|
}
|
|
|
|
void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
|
|
{
|
|
memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
|
|
sizeof(hfsplus_extent_rec));
|
|
fork->total_size = cpu_to_be64(inode->i_size);
|
|
fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
|
|
}
|
|
|
|
int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
|
|
{
|
|
hfsplus_cat_entry entry;
|
|
int res = 0;
|
|
u16 type;
|
|
|
|
type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
|
|
|
|
HFSPLUS_I(inode).dev = 0;
|
|
if (type == HFSPLUS_FOLDER) {
|
|
struct hfsplus_cat_folder *folder = &entry.folder;
|
|
|
|
if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
|
|
/* panic? */;
|
|
hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
|
|
sizeof(struct hfsplus_cat_folder));
|
|
hfsplus_get_perms(inode, &folder->permissions, 1);
|
|
inode->i_nlink = 1;
|
|
inode->i_size = 2 + be32_to_cpu(folder->valence);
|
|
inode->i_atime = hfsp_mt2ut(folder->access_date);
|
|
inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
|
|
inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
|
|
HFSPLUS_I(inode).create_date = folder->create_date;
|
|
HFSPLUS_I(inode).fs_blocks = 0;
|
|
inode->i_op = &hfsplus_dir_inode_operations;
|
|
inode->i_fop = &hfsplus_dir_operations;
|
|
} else if (type == HFSPLUS_FILE) {
|
|
struct hfsplus_cat_file *file = &entry.file;
|
|
|
|
if (fd->entrylength < sizeof(struct hfsplus_cat_file))
|
|
/* panic? */;
|
|
hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
|
|
sizeof(struct hfsplus_cat_file));
|
|
|
|
hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
|
|
&file->data_fork : &file->rsrc_fork);
|
|
hfsplus_get_perms(inode, &file->permissions, 0);
|
|
inode->i_nlink = 1;
|
|
if (S_ISREG(inode->i_mode)) {
|
|
if (file->permissions.dev)
|
|
inode->i_nlink = be32_to_cpu(file->permissions.dev);
|
|
inode->i_op = &hfsplus_file_inode_operations;
|
|
inode->i_fop = &hfsplus_file_operations;
|
|
inode->i_mapping->a_ops = &hfsplus_aops;
|
|
} else if (S_ISLNK(inode->i_mode)) {
|
|
inode->i_op = &page_symlink_inode_operations;
|
|
inode->i_mapping->a_ops = &hfsplus_aops;
|
|
} else {
|
|
init_special_inode(inode, inode->i_mode,
|
|
be32_to_cpu(file->permissions.dev));
|
|
}
|
|
inode->i_atime = hfsp_mt2ut(file->access_date);
|
|
inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
|
|
inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
|
|
HFSPLUS_I(inode).create_date = file->create_date;
|
|
} else {
|
|
printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
|
|
res = -EIO;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int hfsplus_cat_write_inode(struct inode *inode)
|
|
{
|
|
struct inode *main_inode = inode;
|
|
struct hfs_find_data fd;
|
|
hfsplus_cat_entry entry;
|
|
|
|
if (HFSPLUS_IS_RSRC(inode))
|
|
main_inode = HFSPLUS_I(inode).rsrc_inode;
|
|
|
|
if (!main_inode->i_nlink)
|
|
return 0;
|
|
|
|
if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
|
|
/* panic? */
|
|
return -EIO;
|
|
|
|
if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
|
|
/* panic? */
|
|
goto out;
|
|
|
|
if (S_ISDIR(main_inode->i_mode)) {
|
|
struct hfsplus_cat_folder *folder = &entry.folder;
|
|
|
|
if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
|
|
/* panic? */;
|
|
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_folder));
|
|
/* simple node checks? */
|
|
hfsplus_set_perms(inode, &folder->permissions);
|
|
folder->access_date = hfsp_ut2mt(inode->i_atime);
|
|
folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
|
|
folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
|
|
folder->valence = cpu_to_be32(inode->i_size - 2);
|
|
hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_folder));
|
|
} else if (HFSPLUS_IS_RSRC(inode)) {
|
|
struct hfsplus_cat_file *file = &entry.file;
|
|
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_file));
|
|
hfsplus_inode_write_fork(inode, &file->rsrc_fork);
|
|
hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_file));
|
|
} else {
|
|
struct hfsplus_cat_file *file = &entry.file;
|
|
|
|
if (fd.entrylength < sizeof(struct hfsplus_cat_file))
|
|
/* panic? */;
|
|
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_file));
|
|
hfsplus_inode_write_fork(inode, &file->data_fork);
|
|
if (S_ISREG(inode->i_mode))
|
|
HFSPLUS_I(inode).dev = inode->i_nlink;
|
|
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
|
|
HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
|
|
hfsplus_set_perms(inode, &file->permissions);
|
|
if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
|
|
file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
|
|
else
|
|
file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
|
|
file->access_date = hfsp_ut2mt(inode->i_atime);
|
|
file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
|
|
file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
|
|
hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
|
|
sizeof(struct hfsplus_cat_file));
|
|
}
|
|
out:
|
|
hfs_find_exit(&fd);
|
|
return 0;
|
|
}
|