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![Christian Brauner](/assets/img/avatar_default.png)
Convert to struct mnt_idmap.
Last cycle we merged the necessary infrastructure in
256c8aed2b
("fs: introduce dedicated idmap type for mounts").
This is just the conversion to struct mnt_idmap.
Currently we still pass around the plain namespace that was attached to a
mount. This is in general pretty convenient but it makes it easy to
conflate namespaces that are relevant on the filesystem with namespaces
that are relevent on the mount level. Especially for non-vfs developers
without detailed knowledge in this area this can be a potential source for
bugs.
Once the conversion to struct mnt_idmap is done all helpers down to the
really low-level helpers will take a struct mnt_idmap argument instead of
two namespace arguments. This way it becomes impossible to conflate the two
eliminating the possibility of any bugs. All of the vfs and all filesystems
only operate on struct mnt_idmap.
Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
689 lines
19 KiB
C
689 lines
19 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 <linux/fileattr.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_read_folio(struct file *file, struct folio *folio)
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{
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return block_read_full_folio(folio, 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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int hfsplus_write_begin(struct file *file, struct address_space *mapping,
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loff_t pos, unsigned len, 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, 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 bool hfsplus_release_folio(struct folio *folio, gfp_t mask)
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{
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struct inode *inode = folio->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;
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bool res = true;
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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 false;
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}
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if (!tree)
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return false;
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if (tree->node_size >= PAGE_SIZE) {
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nidx = folio->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 = false;
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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 = folio->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 = false;
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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(folio) : false;
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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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.dirty_folio = block_dirty_folio,
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.invalidate_folio = block_invalidate_folio,
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.read_folio = hfsplus_read_folio,
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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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.release_folio = hfsplus_release_folio,
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};
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const struct address_space_operations hfsplus_aops = {
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.dirty_folio = block_dirty_folio,
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.invalidate_folio = block_invalidate_folio,
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.read_folio = hfsplus_read_folio,
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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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.migrate_folio = buffer_migrate_folio,
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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 ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!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 ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!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 mnt_idmap *idmap,
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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(&nop_mnt_idmap, 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(&nop_mnt_idmap, 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(struct mnt_idmap *idmap, const struct path *path,
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struct kstat *stat, u32 request_mask,
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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 (request_mask & STATX_BTIME) {
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stat->result_mask |= STATX_BTIME;
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stat->btime = hfsp_mt2ut(hip->create_date);
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}
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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(&nop_mnt_idmap, 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);
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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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.fileattr_get = hfsplus_fileattr_get,
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.fileattr_set = hfsplus_fileattr_set,
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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(&nop_mnt_idmap, 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;
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hfsplus_file_truncate(inode);
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}
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hfsplus_mark_mdb_dirty(sb);
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}
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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;
|
|
|
|
WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_folder));
|
|
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;
|
|
|
|
WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_file));
|
|
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;
|
|
|
|
WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_folder));
|
|
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;
|
|
|
|
WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_file));
|
|
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;
|
|
}
|
|
|
|
int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa)
|
|
{
|
|
struct inode *inode = d_inode(dentry);
|
|
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
|
|
unsigned int flags = 0;
|
|
|
|
if (inode->i_flags & S_IMMUTABLE)
|
|
flags |= FS_IMMUTABLE_FL;
|
|
if (inode->i_flags & S_APPEND)
|
|
flags |= FS_APPEND_FL;
|
|
if (hip->userflags & HFSPLUS_FLG_NODUMP)
|
|
flags |= FS_NODUMP_FL;
|
|
|
|
fileattr_fill_flags(fa, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hfsplus_fileattr_set(struct mnt_idmap *idmap,
|
|
struct dentry *dentry, struct fileattr *fa)
|
|
{
|
|
struct inode *inode = d_inode(dentry);
|
|
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
|
|
unsigned int new_fl = 0;
|
|
|
|
if (fileattr_has_fsx(fa))
|
|
return -EOPNOTSUPP;
|
|
|
|
/* don't silently ignore unsupported ext2 flags */
|
|
if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (fa->flags & FS_IMMUTABLE_FL)
|
|
new_fl |= S_IMMUTABLE;
|
|
|
|
if (fa->flags & FS_APPEND_FL)
|
|
new_fl |= S_APPEND;
|
|
|
|
inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND);
|
|
|
|
if (fa->flags & FS_NODUMP_FL)
|
|
hip->userflags |= HFSPLUS_FLG_NODUMP;
|
|
else
|
|
hip->userflags &= ~HFSPLUS_FLG_NODUMP;
|
|
|
|
inode->i_ctime = current_time(inode);
|
|
mark_inode_dirty(inode);
|
|
|
|
return 0;
|
|
}
|