^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/hfsplus/inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Brad Boyer (flar@allandria.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * (C) 2003 Ardis Technologies <roman@ardistech.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Inode handling routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mpage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/uio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "hfsplus_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "hfsplus_raw.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static int hfsplus_readpage(struct file *file, struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return block_read_full_page(page, hfsplus_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return block_write_full_page(page, hfsplus_get_block, wbc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct inode *inode = mapping->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (to > inode->i_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) truncate_pagecache(inode, inode->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) hfsplus_file_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) loff_t pos, unsigned len, unsigned flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct page **pagep, void **fsdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *pagep = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) hfsplus_get_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) &HFSPLUS_I(mapping->host)->phys_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) hfsplus_write_failed(mapping, pos + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return generic_block_bmap(mapping, block, hfsplus_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int hfsplus_releasepage(struct page *page, gfp_t mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct inode *inode = page->mapping->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct hfs_btree *tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct hfs_bnode *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u32 nidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int i, res = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) switch (inode->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) case HFSPLUS_EXT_CNID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) tree = HFSPLUS_SB(sb)->ext_tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) case HFSPLUS_CAT_CNID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) tree = HFSPLUS_SB(sb)->cat_tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) case HFSPLUS_ATTR_CNID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) tree = HFSPLUS_SB(sb)->attr_tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!tree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (tree->node_size >= PAGE_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) nidx = page->index >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) (tree->node_size_shift - PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) spin_lock(&tree->hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) node = hfs_bnode_findhash(tree, nidx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) else if (atomic_read(&node->refcnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (res && node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) hfs_bnode_unhash(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) hfs_bnode_free(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) spin_unlock(&tree->hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) nidx = page->index <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) (PAGE_SHIFT - tree->node_size_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) i = 1 << (PAGE_SHIFT - tree->node_size_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) spin_lock(&tree->hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) node = hfs_bnode_findhash(tree, nidx++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (atomic_read(&node->refcnt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) hfs_bnode_unhash(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) hfs_bnode_free(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) } while (--i && nidx < tree->node_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) spin_unlock(&tree->hash_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return res ? try_to_free_buffers(page) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct file *file = iocb->ki_filp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct address_space *mapping = file->f_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct inode *inode = mapping->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) size_t count = iov_iter_count(iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * In case of error extending write may have instantiated a few
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * blocks outside i_size. Trim these off again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) loff_t isize = i_size_read(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) loff_t end = iocb->ki_pos + count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (end > isize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) hfsplus_write_failed(mapping, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static int hfsplus_writepages(struct address_space *mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct writeback_control *wbc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return mpage_writepages(mapping, wbc, hfsplus_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) const struct address_space_operations hfsplus_btree_aops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .readpage = hfsplus_readpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .writepage = hfsplus_writepage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .write_begin = hfsplus_write_begin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .write_end = generic_write_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .bmap = hfsplus_bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .releasepage = hfsplus_releasepage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) const struct address_space_operations hfsplus_aops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .readpage = hfsplus_readpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .writepage = hfsplus_writepage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .write_begin = hfsplus_write_begin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .write_end = generic_write_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .bmap = hfsplus_bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .direct_IO = hfsplus_direct_IO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .writepages = hfsplus_writepages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) const struct dentry_operations hfsplus_dentry_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .d_hash = hfsplus_hash_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .d_compare = hfsplus_compare_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static void hfsplus_get_perms(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct hfsplus_perm *perms, int dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) u16 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) mode = be16_to_cpu(perms->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) i_uid_write(inode, be32_to_cpu(perms->owner));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!i_uid_read(inode) && !mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) inode->i_uid = sbi->uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) i_gid_write(inode, be32_to_cpu(perms->group));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!i_gid_read(inode) && !mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) inode->i_gid = sbi->gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) mode |= S_IFDIR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) } else if (!mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) inode->i_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) HFSPLUS_I(inode)->userflags = perms->userflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) inode->i_flags |= S_IMMUTABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) inode->i_flags &= ~S_IMMUTABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (perms->rootflags & HFSPLUS_FLG_APPEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) inode->i_flags |= S_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) inode->i_flags &= ~S_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static int hfsplus_file_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (HFSPLUS_IS_RSRC(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) inode = HFSPLUS_I(inode)->rsrc_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return -EOVERFLOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) atomic_inc(&HFSPLUS_I(inode)->opencnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int hfsplus_file_release(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (HFSPLUS_IS_RSRC(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) inode = HFSPLUS_I(inode)->rsrc_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) inode_lock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) hfsplus_file_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (inode->i_flags & S_DEAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) hfsplus_delete_cat(inode->i_ino,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) HFSPLUS_SB(sb)->hidden_dir, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) hfsplus_delete_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) inode_unlock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct inode *inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) error = setattr_prepare(dentry, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if ((attr->ia_valid & ATTR_SIZE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) attr->ia_size != i_size_read(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) inode_dio_wait(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (attr->ia_size > inode->i_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) error = generic_cont_expand_simple(inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) truncate_setsize(inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) hfsplus_file_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) inode->i_mtime = inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) setattr_copy(inode, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) int hfsplus_getattr(const struct path *path, struct kstat *stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) u32 request_mask, unsigned int query_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct inode *inode = d_inode(path->dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (inode->i_flags & S_APPEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) stat->attributes |= STATX_ATTR_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (inode->i_flags & S_IMMUTABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) stat->attributes |= STATX_ATTR_IMMUTABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (hip->userflags & HFSPLUS_FLG_NODUMP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) stat->attributes |= STATX_ATTR_NODUMP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) STATX_ATTR_NODUMP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) generic_fillattr(inode, stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int datasync)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct inode *inode = file->f_mapping->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) int error = 0, error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) error = file_write_and_wait_range(file, start, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) inode_lock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * Sync inode metadata into the catalog and extent trees.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) sync_inode_metadata(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * And explicitly write out the btrees.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) error2 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) error = error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (sbi->attr_tree) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) error2 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) filemap_write_and_wait(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) sbi->attr_tree->inode->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) error = error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) pr_err("sync non-existent attributes tree\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) error = error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) inode_unlock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static const struct inode_operations hfsplus_file_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) .setattr = hfsplus_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) .getattr = hfsplus_getattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) .listxattr = hfsplus_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static const struct file_operations hfsplus_file_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) .llseek = generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) .read_iter = generic_file_read_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .write_iter = generic_file_write_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .mmap = generic_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .fsync = hfsplus_file_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) .open = hfsplus_file_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .release = hfsplus_file_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .unlocked_ioctl = hfsplus_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct inode *inode = new_inode(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct hfsplus_inode_info *hip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) inode->i_ino = sbi->next_cnid++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) inode_init_owner(inode, dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) set_nlink(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) hip = HFSPLUS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) INIT_LIST_HEAD(&hip->open_dir_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) spin_lock_init(&hip->open_dir_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) mutex_init(&hip->extents_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) atomic_set(&hip->opencnt, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) hip->extent_state = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) hip->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) hip->userflags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) hip->subfolders = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) hip->alloc_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) hip->first_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) hip->cached_start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) hip->cached_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) hip->phys_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) hip->fs_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) hip->rsrc_inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) inode->i_size = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) sbi->folder_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) inode->i_op = &hfsplus_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) inode->i_fop = &hfsplus_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) } else if (S_ISREG(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) sbi->file_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) inode->i_op = &hfsplus_file_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) inode->i_fop = &hfsplus_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) inode->i_mapping->a_ops = &hfsplus_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) hip->clump_blocks = sbi->data_clump_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) } else if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) sbi->file_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) inode->i_op = &page_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) inode->i_mapping->a_ops = &hfsplus_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) hip->clump_blocks = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) sbi->file_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) insert_inode_hash(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) hfsplus_mark_mdb_dirty(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) void hfsplus_delete_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) HFSPLUS_SB(sb)->folder_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) hfsplus_mark_mdb_dirty(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) HFSPLUS_SB(sb)->file_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (S_ISREG(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (!inode->i_nlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) inode->i_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) hfsplus_file_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) } else if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) inode->i_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) hfsplus_file_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) hfsplus_mark_mdb_dirty(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) u32 count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) for (count = 0, i = 0; i < 8; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) count += be32_to_cpu(fork->extents[i].block_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) hip->first_blocks = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) hip->cached_start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) hip->cached_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) hip->fs_blocks =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) hip->clump_blocks =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (!hip->clump_blocks) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) sbi->rsrc_clump_blocks :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) sbi->data_clump_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) void hfsplus_inode_write_fork(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct hfsplus_fork_raw *fork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) sizeof(hfsplus_extent_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) fork->total_size = cpu_to_be64(inode->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) hfsplus_cat_entry entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) int res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) u16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) HFSPLUS_I(inode)->linkid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (type == HFSPLUS_FOLDER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct hfsplus_cat_folder *folder = &entry.folder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) /* panic? */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) sizeof(struct hfsplus_cat_folder));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) hfsplus_get_perms(inode, &folder->permissions, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) set_nlink(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) inode->i_size = 2 + be32_to_cpu(folder->valence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) inode->i_atime = hfsp_mt2ut(folder->access_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) HFSPLUS_I(inode)->create_date = folder->create_date;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) HFSPLUS_I(inode)->fs_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) HFSPLUS_I(inode)->subfolders =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) be32_to_cpu(folder->subfolders);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) inode->i_op = &hfsplus_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) inode->i_fop = &hfsplus_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) } else if (type == HFSPLUS_FILE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) struct hfsplus_cat_file *file = &entry.file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (fd->entrylength < sizeof(struct hfsplus_cat_file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /* panic? */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) sizeof(struct hfsplus_cat_file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) &file->rsrc_fork : &file->data_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) hfsplus_get_perms(inode, &file->permissions, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) set_nlink(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (S_ISREG(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (file->permissions.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) set_nlink(inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) be32_to_cpu(file->permissions.dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) inode->i_op = &hfsplus_file_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) inode->i_fop = &hfsplus_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) inode->i_mapping->a_ops = &hfsplus_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) } else if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) inode->i_op = &page_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) inode->i_mapping->a_ops = &hfsplus_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) init_special_inode(inode, inode->i_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) be32_to_cpu(file->permissions.dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) inode->i_atime = hfsp_mt2ut(file->access_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) HFSPLUS_I(inode)->create_date = file->create_date;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) pr_err("bad catalog entry used to create inode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) res = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) int hfsplus_cat_write_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct inode *main_inode = inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) struct hfs_find_data fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) hfsplus_cat_entry entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) if (HFSPLUS_IS_RSRC(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) main_inode = HFSPLUS_I(inode)->rsrc_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (!main_inode->i_nlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) /* panic? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /* panic? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (S_ISDIR(main_inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) struct hfsplus_cat_folder *folder = &entry.folder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* panic? */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) sizeof(struct hfsplus_cat_folder));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) /* simple node checks? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) hfsplus_cat_set_perms(inode, &folder->permissions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) folder->access_date = hfsp_ut2mt(inode->i_atime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) folder->valence = cpu_to_be32(inode->i_size - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) folder->subfolders =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) cpu_to_be32(HFSPLUS_I(inode)->subfolders);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) sizeof(struct hfsplus_cat_folder));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) } else if (HFSPLUS_IS_RSRC(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct hfsplus_cat_file *file = &entry.file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) sizeof(struct hfsplus_cat_file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) hfsplus_inode_write_fork(inode, &file->rsrc_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) sizeof(struct hfsplus_cat_file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) struct hfsplus_cat_file *file = &entry.file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (fd.entrylength < sizeof(struct hfsplus_cat_file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) /* panic? */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) sizeof(struct hfsplus_cat_file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) hfsplus_inode_write_fork(inode, &file->data_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) hfsplus_cat_set_perms(inode, &file->permissions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (HFSPLUS_FLG_IMMUTABLE &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) (file->permissions.rootflags |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) file->permissions.userflags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) file->access_date = hfsp_ut2mt(inode->i_atime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) sizeof(struct hfsplus_cat_file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) hfs_find_exit(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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