From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- fs/hfsplus/catalog.c | 358 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 358 insertions(+) create mode 100644 fs/hfsplus/catalog.c (limited to 'fs/hfsplus/catalog.c') diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c new file mode 100644 index 000000000000..94712790c8b3 --- /dev/null +++ b/fs/hfsplus/catalog.c @@ -0,0 +1,358 @@ +/* + * linux/fs/hfsplus/catalog.c + * + * Copyright (C) 2001 + * Brad Boyer (flar@allandria.com) + * (C) 2003 Ardis Technologies + * + * Handling of catalog records + */ + +#include + +#include "hfsplus_fs.h" +#include "hfsplus_raw.h" + +int hfsplus_cat_cmp_key(hfsplus_btree_key *k1, hfsplus_btree_key *k2) +{ + __be32 k1p, k2p; + + k1p = k1->cat.parent; + k2p = k2->cat.parent; + if (k1p != k2p) + return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1; + + return hfsplus_unistrcmp(&k1->cat.name, &k2->cat.name); +} + +void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 parent, struct qstr *str) +{ + int len; + + key->cat.parent = cpu_to_be32(parent); + if (str) { + hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len); + len = be16_to_cpu(key->cat.name.length); + } else { + key->cat.name.length = 0; + len = 0; + } + key->key_len = cpu_to_be16(6 + 2 * len); +} + +static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent, + struct hfsplus_unistr *name) +{ + int ustrlen; + + ustrlen = be16_to_cpu(name->length); + key->cat.parent = cpu_to_be32(parent); + key->cat.name.length = cpu_to_be16(ustrlen); + ustrlen *= 2; + memcpy(key->cat.name.unicode, name->unicode, ustrlen); + key->key_len = cpu_to_be16(6 + ustrlen); +} + +static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) +{ + if (inode->i_flags & S_IMMUTABLE) + perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; + else + perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; + if (inode->i_flags & S_APPEND) + perms->rootflags |= HFSPLUS_FLG_APPEND; + else + perms->rootflags &= ~HFSPLUS_FLG_APPEND; + HFSPLUS_I(inode).rootflags = perms->rootflags; + HFSPLUS_I(inode).userflags = perms->userflags; + perms->mode = cpu_to_be16(inode->i_mode); + perms->owner = cpu_to_be32(inode->i_uid); + perms->group = cpu_to_be32(inode->i_gid); +} + +static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode) +{ + if (S_ISDIR(inode->i_mode)) { + struct hfsplus_cat_folder *folder; + + folder = &entry->folder; + memset(folder, 0, sizeof(*folder)); + folder->type = cpu_to_be16(HFSPLUS_FOLDER); + folder->id = cpu_to_be32(inode->i_ino); + folder->create_date = folder->content_mod_date = + folder->attribute_mod_date = folder->access_date = hfsp_now2mt(); + hfsplus_set_perms(inode, &folder->permissions); + if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir) + /* invisible and namelocked */ + folder->user_info.frFlags = cpu_to_be16(0x5000); + return sizeof(*folder); + } else { + struct hfsplus_cat_file *file; + + file = &entry->file; + memset(file, 0, sizeof(*file)); + file->type = cpu_to_be16(HFSPLUS_FILE); + file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS); + file->id = cpu_to_be32(cnid); + file->create_date = file->content_mod_date = + file->attribute_mod_date = file->access_date = hfsp_now2mt(); + if (cnid == inode->i_ino) { + hfsplus_set_perms(inode, &file->permissions); + file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type); + file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator); + if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) + file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); + } else { + file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE); + file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR); + file->user_info.fdFlags = cpu_to_be16(0x100); + file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev); + } + return sizeof(*file); + } +} + +static int hfsplus_fill_cat_thread(struct super_block *sb, + hfsplus_cat_entry *entry, int type, + u32 parentid, struct qstr *str) +{ + entry->type = cpu_to_be16(type); + entry->thread.reserved = 0; + entry->thread.parentID = cpu_to_be32(parentid); + hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len); + return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2; +} + +/* Try to get a catalog entry for given catalog id */ +int hfsplus_find_cat(struct super_block *sb, u32 cnid, + struct hfs_find_data *fd) +{ + hfsplus_cat_entry tmp; + int err; + u16 type; + + hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL); + err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry)); + if (err) + return err; + + type = be16_to_cpu(tmp.type); + if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) { + printk("HFS+-fs: Found bad thread record in catalog\n"); + return -EIO; + } + + hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID), + &tmp.thread.nodeName); + return hfs_brec_find(fd); +} + +int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode) +{ + struct hfs_find_data fd; + struct super_block *sb; + hfsplus_cat_entry entry; + int entry_size; + int err; + + dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink); + sb = dir->i_sb; + hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + + hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); + entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ? + HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD, + dir->i_ino, str); + err = hfs_brec_find(&fd); + if (err != -ENOENT) { + if (!err) + err = -EEXIST; + goto err2; + } + err = hfs_brec_insert(&fd, &entry, entry_size); + if (err) + goto err2; + + hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); + entry_size = hfsplus_cat_build_record(&entry, cnid, inode); + err = hfs_brec_find(&fd); + if (err != -ENOENT) { + /* panic? */ + if (!err) + err = -EEXIST; + goto err1; + } + err = hfs_brec_insert(&fd, &entry, entry_size); + if (err) + goto err1; + + dir->i_size++; + dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(dir); + hfs_find_exit(&fd); + return 0; + +err1: + hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); + if (!hfs_brec_find(&fd)) + hfs_brec_remove(&fd); +err2: + hfs_find_exit(&fd); + return err; +} + +int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) +{ + struct super_block *sb; + struct hfs_find_data fd; + struct hfsplus_fork_raw fork; + struct list_head *pos; + int err, off; + u16 type; + + dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid); + sb = dir->i_sb; + hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + + if (!str) { + int len; + + hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); + err = hfs_brec_find(&fd); + if (err) + goto out; + + off = fd.entryoffset + offsetof(struct hfsplus_cat_thread, nodeName); + fd.search_key->cat.parent = cpu_to_be32(dir->i_ino); + hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.length, off, 2); + len = be16_to_cpu(fd.search_key->cat.name.length) * 2; + hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len); + fd.search_key->key_len = cpu_to_be16(6 + len); + } else + hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); + + err = hfs_brec_find(&fd); + if (err) + goto out; + + type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset); + if (type == HFSPLUS_FILE) { +#if 0 + off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork); + hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork)); + hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA); +#endif + + off = fd.entryoffset + offsetof(struct hfsplus_cat_file, rsrc_fork); + hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork)); + hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC); + } + + list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) { + struct hfsplus_readdir_data *rd = + list_entry(pos, struct hfsplus_readdir_data, list); + if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0) + rd->file->f_pos--; + } + + err = hfs_brec_remove(&fd); + if (err) + goto out; + + hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); + err = hfs_brec_find(&fd); + if (err) + goto out; + + err = hfs_brec_remove(&fd); + if (err) + goto out; + + dir->i_size--; + dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(dir); +out: + hfs_find_exit(&fd); + + return err; +} + +int hfsplus_rename_cat(u32 cnid, + struct inode *src_dir, struct qstr *src_name, + struct inode *dst_dir, struct qstr *dst_name) +{ + struct super_block *sb; + struct hfs_find_data src_fd, dst_fd; + hfsplus_cat_entry entry; + int entry_size, type; + int err = 0; + + dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name, + dst_dir->i_ino, dst_name->name); + sb = src_dir->i_sb; + hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd); + dst_fd = src_fd; + + /* find the old dir entry and read the data */ + hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); + err = hfs_brec_find(&src_fd); + if (err) + goto out; + + hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset, + src_fd.entrylength); + + /* create new dir entry with the data from the old entry */ + hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name); + err = hfs_brec_find(&dst_fd); + if (err != -ENOENT) { + if (!err) + err = -EEXIST; + goto out; + } + + err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength); + if (err) + goto out; + dst_dir->i_size++; + dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(dst_dir); + + /* finally remove the old entry */ + hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); + err = hfs_brec_find(&src_fd); + if (err) + goto out; + err = hfs_brec_remove(&src_fd); + if (err) + goto out; + src_dir->i_size--; + src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(src_dir); + + /* remove old thread entry */ + hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL); + err = hfs_brec_find(&src_fd); + if (err) + goto out; + type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset); + err = hfs_brec_remove(&src_fd); + if (err) + goto out; + + /* create new thread entry */ + hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL); + entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name); + err = hfs_brec_find(&dst_fd); + if (err != -ENOENT) { + if (!err) + err = -EEXIST; + goto out; + } + err = hfs_brec_insert(&dst_fd, &entry, entry_size); +out: + hfs_bnode_put(dst_fd.bnode); + hfs_find_exit(&src_fd); + return err; +} -- cgit v1.2.3-58-ga151