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![Arnd Bergmann](/assets/img/avatar_default.png)
The interpretation of on-disk timestamps in HFS and HFS+ differs between 32-bit and 64-bit kernels at the moment. Use 64-bit timestamps consistently so apply the current 64-bit behavior everyhere. According to the official documentation for HFS+ [1], inode timestamps are supposed to cover the time range from 1904 to 2040 as originally used in classic MacOS. The traditional Linux usage is to convert the timestamps into an unsigned 32-bit number based on the Unix epoch and from there to a time_t. On 32-bit systems, that wraps the time from 2038 to 1902, so the last two years of the valid time range become garbled. On 64-bit systems, all times before 1970 get turned into timestamps between 2038 and 2106, which is more convenient but also different from the documented behavior. Looking at the Darwin sources [2], it seems that MacOS is inconsistent in yet another way: all timestamps are wrapped around to a 32-bit unsigned number when written to the disk, but when read back, all numeric values lower than 2082844800U are assumed to be invalid, so we cannot represent the times before 1970 or the times after 2040. While all implementations seem to agree on the interpretation of values between 1970 and 2038, they often differ on the exact range they support when reading back values outside of the common range: MacOS (traditional): 1904-2040 Apple Documentation: 1904-2040 MacOS X source comments: 1970-2040 MacOS X source code: 1970-2038 32-bit Linux: 1902-2038 64-bit Linux: 1970-2106 hfsfuse: 1970-2040 hfsutils (32 bit, old libc) 1902-2038 hfsutils (32 bit, new libc) 1970-2106 hfsutils (64 bit) 1904-2040 hfsplus-utils 1904-2040 hfsexplorer 1904-2040 7-zip 1904-2040 Out of the above, the range from 1970 to 2106 seems to be the most useful, as it allows using HFS and HFS+ beyond year 2038, and this matches the behavior that most users would see today on Linux, as few people run 32-bit kernels any more. Link: [1] https://developer.apple.com/library/archive/technotes/tn/tn1150.html Link: [2] https://opensource.apple.com/source/hfs/hfs-407.30.1/core/MacOSStubs.c.auto.html Link: https://lore.kernel.org/lkml/20180711224625.airwna6gzyatoowe@eaf/ Suggested-by: "Ernesto A. Fernández" <ernesto.mnd.fernandez@gmail.com> Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com> Reviewed-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- v3: revert back to 1970-2106 time range fix bugs found in review merge both patches into one drop cc:stable tag v2: treat pre-1970 dates as invalid following MacOS X behavior, reword and expand changelog text
628 lines
17 KiB
C
628 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/hfsplus/inode.c
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*
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* Copyright (C) 2001
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* Brad Boyer (flar@allandria.com)
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* (C) 2003 Ardis Technologies <roman@ardistech.com>
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*
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* Inode handling routines
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*/
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#include <linux/blkdev.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <linux/pagemap.h>
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#include <linux/mpage.h>
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/uio.h>
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#include "hfsplus_fs.h"
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#include "hfsplus_raw.h"
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#include "xattr.h"
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static int hfsplus_readpage(struct file *file, struct page *page)
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{
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return block_read_full_page(page, hfsplus_get_block);
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}
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static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
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{
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return block_write_full_page(page, hfsplus_get_block, wbc);
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}
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static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
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{
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struct inode *inode = mapping->host;
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if (to > inode->i_size) {
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truncate_pagecache(inode, inode->i_size);
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hfsplus_file_truncate(inode);
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}
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}
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static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
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loff_t pos, unsigned len, unsigned flags,
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struct page **pagep, void **fsdata)
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{
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int ret;
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*pagep = NULL;
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ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
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hfsplus_get_block,
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&HFSPLUS_I(mapping->host)->phys_size);
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if (unlikely(ret))
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hfsplus_write_failed(mapping, pos + len);
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return ret;
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}
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static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
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{
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return generic_block_bmap(mapping, block, hfsplus_get_block);
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}
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static int hfsplus_releasepage(struct page *page, gfp_t mask)
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{
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struct inode *inode = page->mapping->host;
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struct super_block *sb = inode->i_sb;
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struct hfs_btree *tree;
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struct hfs_bnode *node;
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u32 nidx;
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int i, res = 1;
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switch (inode->i_ino) {
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case HFSPLUS_EXT_CNID:
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tree = HFSPLUS_SB(sb)->ext_tree;
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break;
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case HFSPLUS_CAT_CNID:
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tree = HFSPLUS_SB(sb)->cat_tree;
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break;
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case HFSPLUS_ATTR_CNID:
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tree = HFSPLUS_SB(sb)->attr_tree;
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break;
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default:
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BUG();
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return 0;
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}
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if (!tree)
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return 0;
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if (tree->node_size >= PAGE_SIZE) {
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nidx = page->index >>
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(tree->node_size_shift - PAGE_SHIFT);
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spin_lock(&tree->hash_lock);
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node = hfs_bnode_findhash(tree, nidx);
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if (!node)
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;
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else if (atomic_read(&node->refcnt))
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res = 0;
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if (res && node) {
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hfs_bnode_unhash(node);
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hfs_bnode_free(node);
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}
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spin_unlock(&tree->hash_lock);
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} else {
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nidx = page->index <<
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(PAGE_SHIFT - tree->node_size_shift);
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i = 1 << (PAGE_SHIFT - tree->node_size_shift);
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spin_lock(&tree->hash_lock);
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do {
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node = hfs_bnode_findhash(tree, nidx++);
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if (!node)
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continue;
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if (atomic_read(&node->refcnt)) {
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res = 0;
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break;
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}
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hfs_bnode_unhash(node);
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hfs_bnode_free(node);
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} while (--i && nidx < tree->node_count);
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spin_unlock(&tree->hash_lock);
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}
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return res ? try_to_free_buffers(page) : 0;
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}
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static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
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{
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struct file *file = iocb->ki_filp;
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struct address_space *mapping = file->f_mapping;
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struct inode *inode = mapping->host;
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size_t count = iov_iter_count(iter);
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ssize_t ret;
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ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
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/*
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* In case of error extending write may have instantiated a few
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* blocks outside i_size. Trim these off again.
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*/
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if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
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loff_t isize = i_size_read(inode);
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loff_t end = iocb->ki_pos + count;
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if (end > isize)
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hfsplus_write_failed(mapping, end);
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}
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return ret;
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}
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static int hfsplus_writepages(struct address_space *mapping,
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struct writeback_control *wbc)
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{
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return mpage_writepages(mapping, wbc, hfsplus_get_block);
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}
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const struct address_space_operations hfsplus_btree_aops = {
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.readpage = hfsplus_readpage,
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.writepage = hfsplus_writepage,
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.write_begin = hfsplus_write_begin,
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.write_end = generic_write_end,
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.bmap = hfsplus_bmap,
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.releasepage = hfsplus_releasepage,
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};
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const struct address_space_operations hfsplus_aops = {
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.readpage = hfsplus_readpage,
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.writepage = hfsplus_writepage,
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.write_begin = hfsplus_write_begin,
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.write_end = generic_write_end,
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.bmap = hfsplus_bmap,
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.direct_IO = hfsplus_direct_IO,
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.writepages = hfsplus_writepages,
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};
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const struct dentry_operations hfsplus_dentry_operations = {
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.d_hash = hfsplus_hash_dentry,
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.d_compare = hfsplus_compare_dentry,
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};
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static void hfsplus_get_perms(struct inode *inode,
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struct hfsplus_perm *perms, int dir)
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{
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struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
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u16 mode;
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mode = be16_to_cpu(perms->mode);
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i_uid_write(inode, be32_to_cpu(perms->owner));
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if (!i_uid_read(inode) && !mode)
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inode->i_uid = sbi->uid;
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i_gid_write(inode, be32_to_cpu(perms->group));
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if (!i_gid_read(inode) && !mode)
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inode->i_gid = sbi->gid;
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if (dir) {
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mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
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mode |= S_IFDIR;
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} else if (!mode)
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mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
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inode->i_mode = mode;
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HFSPLUS_I(inode)->userflags = perms->userflags;
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if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
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inode->i_flags |= S_IMMUTABLE;
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else
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inode->i_flags &= ~S_IMMUTABLE;
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if (perms->rootflags & HFSPLUS_FLG_APPEND)
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inode->i_flags |= S_APPEND;
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else
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inode->i_flags &= ~S_APPEND;
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}
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static int hfsplus_file_open(struct inode *inode, struct file *file)
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{
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if (HFSPLUS_IS_RSRC(inode))
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inode = HFSPLUS_I(inode)->rsrc_inode;
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if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
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return -EOVERFLOW;
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atomic_inc(&HFSPLUS_I(inode)->opencnt);
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return 0;
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}
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static int hfsplus_file_release(struct inode *inode, struct file *file)
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{
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struct super_block *sb = inode->i_sb;
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if (HFSPLUS_IS_RSRC(inode))
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inode = HFSPLUS_I(inode)->rsrc_inode;
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if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
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inode_lock(inode);
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hfsplus_file_truncate(inode);
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if (inode->i_flags & S_DEAD) {
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hfsplus_delete_cat(inode->i_ino,
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HFSPLUS_SB(sb)->hidden_dir, NULL);
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hfsplus_delete_inode(inode);
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}
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inode_unlock(inode);
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}
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return 0;
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}
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static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
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{
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struct inode *inode = d_inode(dentry);
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int error;
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error = setattr_prepare(dentry, attr);
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if (error)
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return error;
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if ((attr->ia_valid & ATTR_SIZE) &&
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attr->ia_size != i_size_read(inode)) {
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inode_dio_wait(inode);
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if (attr->ia_size > inode->i_size) {
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error = generic_cont_expand_simple(inode,
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attr->ia_size);
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if (error)
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return error;
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}
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truncate_setsize(inode, attr->ia_size);
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hfsplus_file_truncate(inode);
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inode->i_mtime = inode->i_ctime = current_time(inode);
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}
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setattr_copy(inode, attr);
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mark_inode_dirty(inode);
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return 0;
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}
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int hfsplus_getattr(const struct path *path, struct kstat *stat,
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u32 request_mask, unsigned int query_flags)
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{
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struct inode *inode = d_inode(path->dentry);
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struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
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if (inode->i_flags & S_APPEND)
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stat->attributes |= STATX_ATTR_APPEND;
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if (inode->i_flags & S_IMMUTABLE)
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stat->attributes |= STATX_ATTR_IMMUTABLE;
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if (hip->userflags & HFSPLUS_FLG_NODUMP)
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stat->attributes |= STATX_ATTR_NODUMP;
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stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE |
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STATX_ATTR_NODUMP;
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generic_fillattr(inode, stat);
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return 0;
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}
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int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
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int datasync)
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{
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struct inode *inode = file->f_mapping->host;
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struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
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struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
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int error = 0, error2;
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error = file_write_and_wait_range(file, start, end);
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if (error)
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return error;
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inode_lock(inode);
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/*
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* Sync inode metadata into the catalog and extent trees.
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*/
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sync_inode_metadata(inode, 1);
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/*
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* And explicitly write out the btrees.
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*/
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if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
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error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
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if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
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error2 =
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filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
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if (!error)
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error = error2;
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}
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if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
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if (sbi->attr_tree) {
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error2 =
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filemap_write_and_wait(
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sbi->attr_tree->inode->i_mapping);
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if (!error)
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error = error2;
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} else {
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pr_err("sync non-existent attributes tree\n");
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}
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}
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if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
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error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
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if (!error)
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error = error2;
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}
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if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
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blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
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inode_unlock(inode);
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return error;
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}
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static const struct inode_operations hfsplus_file_inode_operations = {
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.setattr = hfsplus_setattr,
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.getattr = hfsplus_getattr,
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.listxattr = hfsplus_listxattr,
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};
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static const struct file_operations hfsplus_file_operations = {
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.llseek = generic_file_llseek,
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.read_iter = generic_file_read_iter,
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.write_iter = generic_file_write_iter,
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.mmap = generic_file_mmap,
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.splice_read = generic_file_splice_read,
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.fsync = hfsplus_file_fsync,
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.open = hfsplus_file_open,
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.release = hfsplus_file_release,
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.unlocked_ioctl = hfsplus_ioctl,
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};
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struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
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umode_t mode)
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{
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struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
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struct inode *inode = new_inode(sb);
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struct hfsplus_inode_info *hip;
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if (!inode)
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return NULL;
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inode->i_ino = sbi->next_cnid++;
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inode_init_owner(inode, dir, mode);
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set_nlink(inode, 1);
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inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
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hip = HFSPLUS_I(inode);
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INIT_LIST_HEAD(&hip->open_dir_list);
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spin_lock_init(&hip->open_dir_lock);
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mutex_init(&hip->extents_lock);
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atomic_set(&hip->opencnt, 0);
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hip->extent_state = 0;
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hip->flags = 0;
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hip->userflags = 0;
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hip->subfolders = 0;
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memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
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memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
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hip->alloc_blocks = 0;
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hip->first_blocks = 0;
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hip->cached_start = 0;
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hip->cached_blocks = 0;
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hip->phys_size = 0;
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hip->fs_blocks = 0;
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hip->rsrc_inode = NULL;
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if (S_ISDIR(inode->i_mode)) {
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inode->i_size = 2;
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sbi->folder_count++;
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inode->i_op = &hfsplus_dir_inode_operations;
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inode->i_fop = &hfsplus_dir_operations;
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} else if (S_ISREG(inode->i_mode)) {
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sbi->file_count++;
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inode->i_op = &hfsplus_file_inode_operations;
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inode->i_fop = &hfsplus_file_operations;
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inode->i_mapping->a_ops = &hfsplus_aops;
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hip->clump_blocks = sbi->data_clump_blocks;
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} else if (S_ISLNK(inode->i_mode)) {
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sbi->file_count++;
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inode->i_op = &page_symlink_inode_operations;
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inode_nohighmem(inode);
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inode->i_mapping->a_ops = &hfsplus_aops;
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hip->clump_blocks = 1;
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} else
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sbi->file_count++;
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insert_inode_hash(inode);
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mark_inode_dirty(inode);
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hfsplus_mark_mdb_dirty(sb);
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return inode;
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}
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void hfsplus_delete_inode(struct inode *inode)
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{
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struct super_block *sb = inode->i_sb;
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if (S_ISDIR(inode->i_mode)) {
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HFSPLUS_SB(sb)->folder_count--;
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hfsplus_mark_mdb_dirty(sb);
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return;
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}
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HFSPLUS_SB(sb)->file_count--;
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if (S_ISREG(inode->i_mode)) {
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if (!inode->i_nlink) {
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inode->i_size = 0;
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hfsplus_file_truncate(inode);
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}
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} else if (S_ISLNK(inode->i_mode)) {
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inode->i_size = 0;
|
|
hfsplus_file_truncate(inode);
|
|
}
|
|
hfsplus_mark_mdb_dirty(sb);
|
|
}
|
|
|
|
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
|
|
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
|
|
u32 count;
|
|
int i;
|
|
|
|
memcpy(&hip->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);
|
|
hip->first_blocks = count;
|
|
memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
|
|
hip->cached_start = 0;
|
|
hip->cached_blocks = 0;
|
|
|
|
hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
|
|
hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
|
|
hip->fs_blocks =
|
|
(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
|
|
inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
|
|
hip->clump_blocks =
|
|
be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
|
|
if (!hip->clump_blocks) {
|
|
hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
|
|
sbi->rsrc_clump_blocks :
|
|
sbi->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)->linkid = 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);
|
|
set_nlink(inode, 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;
|
|
if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
|
|
HFSPLUS_I(inode)->subfolders =
|
|
be32_to_cpu(folder->subfolders);
|
|
}
|
|
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_RSRC(inode) ?
|
|
&file->rsrc_fork : &file->data_fork);
|
|
hfsplus_get_perms(inode, &file->permissions, 0);
|
|
set_nlink(inode, 1);
|
|
if (S_ISREG(inode->i_mode)) {
|
|
if (file->permissions.dev)
|
|
set_nlink(inode,
|
|
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_nohighmem(inode);
|
|
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 {
|
|
pr_err("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_cat_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);
|
|
if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
|
|
folder->subfolders =
|
|
cpu_to_be32(HFSPLUS_I(inode)->subfolders);
|
|
}
|
|
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);
|
|
hfsplus_cat_set_perms(inode, &file->permissions);
|
|
if (HFSPLUS_FLG_IMMUTABLE &
|
|
(file->permissions.rootflags |
|
|
file->permissions.userflags))
|
|
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));
|
|
}
|
|
|
|
set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
|
|
out:
|
|
hfs_find_exit(&fd);
|
|
return 0;
|
|
}
|