^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/catalog.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) * Handling of catalog records
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "hfsplus_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "hfsplus_raw.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) const hfsplus_btree_key *k2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) __be32 k1p, k2p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) k1p = k1->cat.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) k2p = k2->cat.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) if (k1p != k2p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) const hfsplus_btree_key *k2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) __be32 k1p, k2p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) k1p = k1->cat.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) k2p = k2->cat.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (k1p != k2p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* Generates key for catalog file/folders record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int hfsplus_cat_build_key(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) hfsplus_btree_key *key, u32 parent, const struct qstr *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int len, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) key->cat.parent = cpu_to_be32(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) err = hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) str->name, str->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (unlikely(err < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) len = be16_to_cpu(key->cat.name.length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) key->key_len = cpu_to_be16(6 + 2 * len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Generates key for catalog thread record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) hfsplus_btree_key *key, u32 parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) key->cat.parent = cpu_to_be32(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) key->cat.name.length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) key->key_len = cpu_to_be16(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct hfsplus_unistr *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int ustrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ustrlen = be16_to_cpu(name->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) key->cat.parent = cpu_to_be32(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) key->cat.name.length = cpu_to_be16(ustrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ustrlen *= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) memcpy(key->cat.name.unicode, name->unicode, ustrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) key->key_len = cpu_to_be16(6 + ustrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (inode->i_flags & S_IMMUTABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (inode->i_flags & S_APPEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) perms->rootflags |= HFSPLUS_FLG_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) perms->rootflags &= ~HFSPLUS_FLG_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) perms->userflags = HFSPLUS_I(inode)->userflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) perms->mode = cpu_to_be16(inode->i_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) perms->owner = cpu_to_be32(i_uid_read(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) perms->group = cpu_to_be32(i_gid_read(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (S_ISREG(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) perms->dev = cpu_to_be32(inode->i_nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) perms->dev = cpu_to_be32(inode->i_rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) perms->dev = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) u32 cnid, struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct hfsplus_cat_folder *folder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) folder = &entry->folder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) memset(folder, 0, sizeof(*folder));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) folder->type = cpu_to_be16(HFSPLUS_FOLDER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) folder->flags |= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) folder->id = cpu_to_be32(inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) HFSPLUS_I(inode)->create_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) folder->create_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) folder->content_mod_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) folder->attribute_mod_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) folder->access_date = hfsp_now2mt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) hfsplus_cat_set_perms(inode, &folder->permissions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (inode == sbi->hidden_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* invisible and namelocked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) folder->user_info.frFlags = cpu_to_be16(0x5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return sizeof(*folder);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct hfsplus_cat_file *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) file = &entry->file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) memset(file, 0, sizeof(*file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) file->type = cpu_to_be16(HFSPLUS_FILE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) file->id = cpu_to_be32(cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) HFSPLUS_I(inode)->create_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) file->create_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) file->content_mod_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) file->attribute_mod_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) file->access_date = hfsp_now2mt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (cnid == inode->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) hfsplus_cat_set_perms(inode, &file->permissions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) file->user_info.fdType =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) cpu_to_be32(HFSP_SYMLINK_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) file->user_info.fdCreator =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) cpu_to_be32(HFSP_SYMLINK_CREATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) file->user_info.fdType =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) cpu_to_be32(sbi->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) file->user_info.fdCreator =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) cpu_to_be32(sbi->creator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (HFSPLUS_FLG_IMMUTABLE &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) (file->permissions.rootflags |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) file->permissions.userflags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) file->flags |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) cpu_to_be16(HFSPLUS_FILE_LOCKED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) file->user_info.fdType =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) cpu_to_be32(HFSP_HARDLINK_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) file->user_info.fdCreator =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) cpu_to_be32(HFSP_HFSPLUS_CREATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) file->user_info.fdFlags =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) cpu_to_be16(0x100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) file->create_date =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) HFSPLUS_I(sbi->hidden_dir)->create_date;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) file->permissions.dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) cpu_to_be32(HFSPLUS_I(inode)->linkid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return sizeof(*file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^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) static int hfsplus_fill_cat_thread(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) hfsplus_cat_entry *entry, int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) u32 parentid, const struct qstr *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) entry->type = cpu_to_be16(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) entry->thread.reserved = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) entry->thread.parentID = cpu_to_be32(parentid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) err = hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) str->name, str->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (unlikely(err < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /* Try to get a catalog entry for given catalog id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int hfsplus_find_cat(struct super_block *sb, u32 cnid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct hfs_find_data *fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) hfsplus_cat_entry tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) hfsplus_cat_build_key_with_cnid(sb, fd->search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) type = be16_to_cpu(tmp.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) pr_err("found bad thread record in catalog\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) pr_err("catalog name length corrupted\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) hfsplus_cat_build_key_uni(fd->search_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) be32_to_cpu(tmp.thread.parentID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) &tmp.thread.nodeName);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return hfs_brec_find(fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static void hfsplus_subfolders_inc(struct inode *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * Increment subfolder count. Note, the value is only meaningful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) HFSPLUS_I(dir)->subfolders++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void hfsplus_subfolders_dec(struct inode *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * Decrement subfolder count. Note, the value is only meaningful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Check for zero. Some subfolders may have been created
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * by an implementation ignorant of this counter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (HFSPLUS_I(dir)->subfolders)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) HFSPLUS_I(dir)->subfolders--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int hfsplus_create_cat(u32 cnid, struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) const struct qstr *str, struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct super_block *sb = dir->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct hfs_find_data fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) hfsplus_cat_entry entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int entry_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) str->name, cnid, inode->i_nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * Fail early and avoid ENOSPC during the btree operations. We may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * have to split the root node at most once.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) err = hfs_bmap_reserve(fd.tree, 2 * fd.tree->depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) entry_size = hfsplus_fill_cat_thread(sb, &entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) S_ISDIR(inode->i_mode) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) dir->i_ino, str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (unlikely(entry_size < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) err = entry_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) err = hfs_brec_find(&fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (err != -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) err = hfs_brec_insert(&fd, &entry, entry_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) err = hfs_brec_find(&fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (err != -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* panic? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) err = hfs_brec_insert(&fd, &entry, entry_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) dir->i_size++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) hfsplus_subfolders_inc(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) dir->i_mtime = dir->i_ctime = current_time(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) hfs_find_exit(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (!hfs_brec_find(&fd, hfs_find_rec_by_key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) hfs_brec_remove(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) hfs_find_exit(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) int hfsplus_delete_cat(u32 cnid, struct inode *dir, const struct qstr *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct super_block *sb = dir->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct hfs_find_data fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct hfsplus_fork_raw fork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct list_head *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int err, off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) u16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * Fail early and avoid ENOSPC during the btree operations. We may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * have to split the root node at most once.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) err = hfs_bmap_reserve(fd.tree, 2 * (int)fd.tree->depth - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (!str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) err = hfs_brec_find(&fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) off = fd.entryoffset +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) offsetof(struct hfsplus_cat_thread, nodeName);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) hfs_bnode_read(fd.bnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) &fd.search_key->cat.name.length, off, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) hfs_bnode_read(fd.bnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) &fd.search_key->cat.name.unicode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) off + 2, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) fd.search_key->key_len = cpu_to_be16(6 + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) err = hfs_brec_find(&fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (type == HFSPLUS_FILE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) off = fd.entryoffset +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) offsetof(struct hfsplus_cat_file, rsrc_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* we only need to take spinlock for exclusion with ->release() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) spin_lock(&HFSPLUS_I(dir)->open_dir_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct hfsplus_readdir_data *rd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) list_entry(pos, struct hfsplus_readdir_data, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) rd->file->f_pos--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) spin_unlock(&HFSPLUS_I(dir)->open_dir_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) err = hfs_brec_remove(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) err = hfs_brec_find(&fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) err = hfs_brec_remove(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) dir->i_size--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (type == HFSPLUS_FOLDER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) hfsplus_subfolders_dec(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) dir->i_mtime = dir->i_ctime = current_time(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (HFSPLUS_SB(sb)->attr_tree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) hfsplus_delete_all_attrs(dir, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) hfs_find_exit(&fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) int hfsplus_rename_cat(u32 cnid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct inode *src_dir, const struct qstr *src_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct inode *dst_dir, const struct qstr *dst_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct super_block *sb = src_dir->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct hfs_find_data src_fd, dst_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) hfsplus_cat_entry entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) int entry_size, type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) hfs_dbg(CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) cnid, src_dir->i_ino, src_name->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) dst_dir->i_ino, dst_name->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) dst_fd = src_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * Fail early and avoid ENOSPC during the btree operations. We may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * have to split the root node at most twice.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) err = hfs_bmap_reserve(src_fd.tree, 4 * (int)src_fd.tree->depth - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) /* find the old dir entry and read the data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) err = hfsplus_cat_build_key(sb, src_fd.search_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) src_dir->i_ino, src_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) src_fd.entrylength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) type = be16_to_cpu(entry.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) /* create new dir entry with the data from the old entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) err = hfsplus_cat_build_key(sb, dst_fd.search_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) dst_dir->i_ino, dst_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (err != -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) dst_dir->i_size++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (type == HFSPLUS_FOLDER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) hfsplus_subfolders_inc(dst_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) dst_dir->i_mtime = dst_dir->i_ctime = current_time(dst_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /* finally remove the old entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) err = hfsplus_cat_build_key(sb, src_fd.search_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) src_dir->i_ino, src_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) err = hfs_brec_remove(&src_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) src_dir->i_size--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (type == HFSPLUS_FOLDER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) hfsplus_subfolders_dec(src_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) src_dir->i_mtime = src_dir->i_ctime = current_time(src_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* remove old thread entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) err = hfs_brec_remove(&src_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* create new thread entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) hfsplus_cat_build_key_with_cnid(sb, dst_fd.search_key, cnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) dst_dir->i_ino, dst_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (unlikely(entry_size < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) err = entry_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (err != -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) err = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) err = hfs_brec_insert(&dst_fd, &entry, entry_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) hfs_bnode_put(dst_fd.bnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) hfs_find_exit(&src_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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