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!
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
new file mode 100644
index 0000000..d564270
--- /dev/null
+++ b/fs/hfsplus/inode.c
@@ -0,0 +1,555 @@
+/*
+ * linux/fs/hfsplus/inode.c
+ *
+ * Copyright (C) 2001
+ * Brad Boyer (flar@allandria.com)
+ * (C) 2003 Ardis Technologies <roman@ardistech.com>
+ *
+ * Inode handling routines
+ */
+
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/pagemap.h>
+#include <linux/version.h>
+#include <linux/mpage.h>
+
+#include "hfsplus_fs.h"
+#include "hfsplus_raw.h"
+
+static int hfsplus_readpage(struct file *file, struct page *page)
+{
+ //printk("readpage: %lu\n", page->index);
+ return block_read_full_page(page, hfsplus_get_block);
+}
+
+static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
+{
+ //printk("writepage: %lu\n", page->index);
+ return block_write_full_page(page, hfsplus_get_block, wbc);
+}
+
+static int hfsplus_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
+{
+ return cont_prepare_write(page, from, to, hfsplus_get_block,
+ &HFSPLUS_I(page->mapping->host).phys_size);
+}
+
+static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
+{
+ return generic_block_bmap(mapping, block, hfsplus_get_block);
+}
+
+static int hfsplus_releasepage(struct page *page, int mask)
+{
+ struct inode *inode = page->mapping->host;
+ struct super_block *sb = inode->i_sb;
+ struct hfs_btree *tree;
+ struct hfs_bnode *node;
+ u32 nidx;
+ int i, res = 1;
+
+ switch (inode->i_ino) {
+ case HFSPLUS_EXT_CNID:
+ tree = HFSPLUS_SB(sb).ext_tree;
+ break;
+ case HFSPLUS_CAT_CNID:
+ tree = HFSPLUS_SB(sb).cat_tree;
+ break;
+ case HFSPLUS_ATTR_CNID:
+ tree = HFSPLUS_SB(sb).attr_tree;
+ break;
+ default:
+ BUG();
+ return 0;
+ }
+ if (tree->node_size >= PAGE_CACHE_SIZE) {
+ nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
+ spin_lock(&tree->hash_lock);
+ node = hfs_bnode_findhash(tree, nidx);
+ if (!node)
+ ;
+ else if (atomic_read(&node->refcnt))
+ res = 0;
+ if (res && node) {
+ hfs_bnode_unhash(node);
+ hfs_bnode_free(node);
+ }
+ spin_unlock(&tree->hash_lock);
+ } else {
+ nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
+ i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
+ spin_lock(&tree->hash_lock);
+ do {
+ node = hfs_bnode_findhash(tree, nidx++);
+ if (!node)
+ continue;
+ if (atomic_read(&node->refcnt)) {
+ res = 0;
+ break;
+ }
+ hfs_bnode_unhash(node);
+ hfs_bnode_free(node);
+ } while (--i && nidx < tree->node_count);
+ spin_unlock(&tree->hash_lock);
+ }
+ //printk("releasepage: %lu,%x = %d\n", page->index, mask, res);
+ return res ? try_to_free_buffers(page) : 0;
+}
+
+static int hfsplus_get_blocks(struct inode *inode, sector_t iblock, unsigned long max_blocks,
+ struct buffer_head *bh_result, int create)
+{
+ int ret;
+
+ ret = hfsplus_get_block(inode, iblock, bh_result, create);
+ if (!ret)
+ bh_result->b_size = (1 << inode->i_blkbits);
+ return ret;
+}
+
+static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
+ const struct iovec *iov, loff_t offset, unsigned long nr_segs)
+{
+ struct file *file = iocb->ki_filp;
+ struct inode *inode = file->f_dentry->d_inode->i_mapping->host;
+
+ return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+ offset, nr_segs, hfsplus_get_blocks, NULL);
+}
+
+static int hfsplus_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, hfsplus_get_block);
+}
+
+struct address_space_operations hfsplus_btree_aops = {
+ .readpage = hfsplus_readpage,
+ .writepage = hfsplus_writepage,
+ .sync_page = block_sync_page,
+ .prepare_write = hfsplus_prepare_write,
+ .commit_write = generic_commit_write,
+ .bmap = hfsplus_bmap,
+ .releasepage = hfsplus_releasepage,
+};
+
+struct address_space_operations hfsplus_aops = {
+ .readpage = hfsplus_readpage,
+ .writepage = hfsplus_writepage,
+ .sync_page = block_sync_page,
+ .prepare_write = hfsplus_prepare_write,
+ .commit_write = generic_commit_write,
+ .bmap = hfsplus_bmap,
+ .direct_IO = hfsplus_direct_IO,
+ .writepages = hfsplus_writepages,
+};
+
+static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd)
+{
+ struct hfs_find_data fd;
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode = NULL;
+ int err;
+
+ if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
+ goto out;
+
+ inode = HFSPLUS_I(dir).rsrc_inode;
+ if (inode)
+ goto out;
+
+ inode = new_inode(sb);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+
+ inode->i_ino = dir->i_ino;
+ INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
+ init_MUTEX(&HFSPLUS_I(inode).extents_lock);
+ HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
+
+ hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ err = hfsplus_find_cat(sb, dir->i_ino, &fd);
+ if (!err)
+ err = hfsplus_cat_read_inode(inode, &fd);
+ hfs_find_exit(&fd);
+ if (err) {
+ iput(inode);
+ return ERR_PTR(err);
+ }
+ HFSPLUS_I(inode).rsrc_inode = dir;
+ HFSPLUS_I(dir).rsrc_inode = inode;
+ igrab(dir);
+ hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
+ mark_inode_dirty(inode);
+ {
+ void hfsplus_inode_check(struct super_block *sb);
+ atomic_inc(&HFSPLUS_SB(sb).inode_cnt);
+ hfsplus_inode_check(sb);
+ }
+out:
+ d_add(dentry, inode);
+ return NULL;
+}
+
+static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
+{
+ struct super_block *sb = inode->i_sb;
+ u16 mode;
+
+ mode = be16_to_cpu(perms->mode);
+
+ inode->i_uid = be32_to_cpu(perms->owner);
+ if (!inode->i_uid && !mode)
+ inode->i_uid = HFSPLUS_SB(sb).uid;
+
+ inode->i_gid = be32_to_cpu(perms->group);
+ if (!inode->i_gid && !mode)
+ inode->i_gid = HFSPLUS_SB(sb).gid;
+
+ if (dir) {
+ mode = mode ? (mode & S_IALLUGO) :
+ (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
+ mode |= S_IFDIR;
+ } else if (!mode)
+ mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
+ ~(HFSPLUS_SB(sb).umask));
+ inode->i_mode = mode;
+
+ HFSPLUS_I(inode).rootflags = perms->rootflags;
+ HFSPLUS_I(inode).userflags = perms->userflags;
+ if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
+ if (perms->rootflags & HFSPLUS_FLG_APPEND)
+ inode->i_flags |= S_APPEND;
+ else
+ inode->i_flags &= ~S_APPEND;
+}
+
+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;
+ perms->userflags = HFSPLUS_I(inode).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);
+ perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
+}
+
+static int hfsplus_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ /* MAY_EXEC is also used for lookup, if no x bit is set allow lookup,
+ * open_exec has the same test, so it's still not executable, if a x bit
+ * is set fall back to standard permission check.
+ */
+ if (S_ISREG(inode->i_mode) && mask & MAY_EXEC && !(inode->i_mode & 0111))
+ return 0;
+ return generic_permission(inode, mask, NULL);
+}
+
+
+static int hfsplus_file_open(struct inode *inode, struct file *file)
+{
+ if (HFSPLUS_IS_RSRC(inode))
+ inode = HFSPLUS_I(inode).rsrc_inode;
+ if (atomic_read(&file->f_count) != 1)
+ return 0;
+ atomic_inc(&HFSPLUS_I(inode).opencnt);
+ return 0;
+}
+
+static int hfsplus_file_release(struct inode *inode, struct file *file)
+{
+ struct super_block *sb = inode->i_sb;
+
+ if (HFSPLUS_IS_RSRC(inode))
+ inode = HFSPLUS_I(inode).rsrc_inode;
+ if (atomic_read(&file->f_count) != 0)
+ return 0;
+ if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
+ down(&inode->i_sem);
+ hfsplus_file_truncate(inode);
+ if (inode->i_flags & S_DEAD) {
+ hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
+ hfsplus_delete_inode(inode);
+ }
+ up(&inode->i_sem);
+ }
+ return 0;
+}
+
+extern struct inode_operations hfsplus_dir_inode_operations;
+extern struct file_operations hfsplus_dir_operations;
+
+static struct inode_operations hfsplus_file_inode_operations = {
+ .lookup = hfsplus_file_lookup,
+ .truncate = hfsplus_file_truncate,
+ .permission = hfsplus_permission,
+ .setxattr = hfsplus_setxattr,
+ .getxattr = hfsplus_getxattr,
+ .listxattr = hfsplus_listxattr,
+};
+
+static struct file_operations hfsplus_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = generic_file_read,
+ .write = generic_file_write,
+ .mmap = generic_file_mmap,
+ .sendfile = generic_file_sendfile,
+ .fsync = file_fsync,
+ .open = hfsplus_file_open,
+ .release = hfsplus_file_release,
+ .ioctl = hfsplus_ioctl,
+};
+
+struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
+{
+ struct inode *inode = new_inode(sb);
+ if (!inode)
+ return NULL;
+
+ {
+ void hfsplus_inode_check(struct super_block *sb);
+ atomic_inc(&HFSPLUS_SB(sb).inode_cnt);
+ hfsplus_inode_check(sb);
+ }
+ inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
+ inode->i_mode = mode;
+ inode->i_uid = current->fsuid;
+ inode->i_gid = current->fsgid;
+ inode->i_nlink = 1;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_blksize = HFSPLUS_SB(sb).alloc_blksz;
+ INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
+ init_MUTEX(&HFSPLUS_I(inode).extents_lock);
+ atomic_set(&HFSPLUS_I(inode).opencnt, 0);
+ HFSPLUS_I(inode).flags = 0;
+ memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
+ memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
+ HFSPLUS_I(inode).alloc_blocks = 0;
+ HFSPLUS_I(inode).first_blocks = 0;
+ HFSPLUS_I(inode).cached_start = 0;
+ HFSPLUS_I(inode).cached_blocks = 0;
+ HFSPLUS_I(inode).phys_size = 0;
+ HFSPLUS_I(inode).fs_blocks = 0;
+ HFSPLUS_I(inode).rsrc_inode = NULL;
+ if (S_ISDIR(inode->i_mode)) {
+ inode->i_size = 2;
+ HFSPLUS_SB(sb).folder_count++;
+ inode->i_op = &hfsplus_dir_inode_operations;
+ inode->i_fop = &hfsplus_dir_operations;
+ } else if (S_ISREG(inode->i_mode)) {
+ HFSPLUS_SB(sb).file_count++;
+ inode->i_op = &hfsplus_file_inode_operations;
+ inode->i_fop = &hfsplus_file_operations;
+ inode->i_mapping->a_ops = &hfsplus_aops;
+ HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
+ } else if (S_ISLNK(inode->i_mode)) {
+ HFSPLUS_SB(sb).file_count++;
+ inode->i_op = &page_symlink_inode_operations;
+ inode->i_mapping->a_ops = &hfsplus_aops;
+ HFSPLUS_I(inode).clump_blocks = 1;
+ } else
+ HFSPLUS_SB(sb).file_count++;
+ insert_inode_hash(inode);
+ mark_inode_dirty(inode);
+ sb->s_dirt = 1;
+
+ return inode;
+}
+
+void hfsplus_delete_inode(struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+
+ if (S_ISDIR(inode->i_mode)) {
+ HFSPLUS_SB(sb).folder_count--;
+ sb->s_dirt = 1;
+ return;
+ }
+ HFSPLUS_SB(sb).file_count--;
+ if (S_ISREG(inode->i_mode)) {
+ if (!inode->i_nlink) {
+ inode->i_size = 0;
+ hfsplus_file_truncate(inode);
+ }
+ } else if (S_ISLNK(inode->i_mode)) {
+ inode->i_size = 0;
+ hfsplus_file_truncate(inode);
+ }
+ sb->s_dirt = 1;
+}
+
+void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
+{
+ struct super_block *sb = inode->i_sb;
+ u32 count;
+ int i;
+
+ memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
+ sizeof(hfsplus_extent_rec));
+ for (count = 0, i = 0; i < 8; i++)
+ count += be32_to_cpu(fork->extents[i].block_count);
+ HFSPLUS_I(inode).first_blocks = count;
+ memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
+ HFSPLUS_I(inode).cached_start = 0;
+ HFSPLUS_I(inode).cached_blocks = 0;
+
+ HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
+ inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
+ HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+ inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
+ HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
+ if (!HFSPLUS_I(inode).clump_blocks)
+ HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
+ HFSPLUS_SB(sb).data_clump_blocks;
+}
+
+void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
+{
+ memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
+ sizeof(hfsplus_extent_rec));
+ fork->total_size = cpu_to_be64(inode->i_size);
+ fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
+}
+
+int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
+{
+ hfsplus_cat_entry entry;
+ int res = 0;
+ u16 type;
+
+ type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
+
+ HFSPLUS_I(inode).dev = 0;
+ inode->i_blksize = HFSPLUS_SB(inode->i_sb).alloc_blksz;
+ if (type == HFSPLUS_FOLDER) {
+ struct hfsplus_cat_folder *folder = &entry.folder;
+
+ if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
+ /* panic? */;
+ hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
+ sizeof(struct hfsplus_cat_folder));
+ hfsplus_get_perms(inode, &folder->permissions, 1);
+ inode->i_nlink = 1;
+ inode->i_size = 2 + be32_to_cpu(folder->valence);
+ inode->i_atime = hfsp_mt2ut(folder->access_date);
+ inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
+ inode->i_ctime = inode->i_mtime;
+ HFSPLUS_I(inode).fs_blocks = 0;
+ inode->i_op = &hfsplus_dir_inode_operations;
+ inode->i_fop = &hfsplus_dir_operations;
+ } else if (type == HFSPLUS_FILE) {
+ struct hfsplus_cat_file *file = &entry.file;
+
+ if (fd->entrylength < sizeof(struct hfsplus_cat_file))
+ /* panic? */;
+ hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
+ sizeof(struct hfsplus_cat_file));
+
+ hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
+ &file->data_fork : &file->rsrc_fork);
+ hfsplus_get_perms(inode, &file->permissions, 0);
+ inode->i_nlink = 1;
+ if (S_ISREG(inode->i_mode)) {
+ if (file->permissions.dev)
+ inode->i_nlink = be32_to_cpu(file->permissions.dev);
+ inode->i_op = &hfsplus_file_inode_operations;
+ inode->i_fop = &hfsplus_file_operations;
+ inode->i_mapping->a_ops = &hfsplus_aops;
+ } else if (S_ISLNK(inode->i_mode)) {
+ inode->i_op = &page_symlink_inode_operations;
+ inode->i_mapping->a_ops = &hfsplus_aops;
+ } else {
+ init_special_inode(inode, inode->i_mode,
+ be32_to_cpu(file->permissions.dev));
+ }
+ inode->i_atime = hfsp_mt2ut(file->access_date);
+ inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
+ inode->i_ctime = inode->i_mtime;
+ } else {
+ printk("HFS+-fs: bad catalog entry used to create inode\n");
+ res = -EIO;
+ }
+ return res;
+}
+
+int hfsplus_cat_write_inode(struct inode *inode)
+{
+ struct inode *main_inode = inode;
+ struct hfs_find_data fd;
+ hfsplus_cat_entry entry;
+
+ if (HFSPLUS_IS_RSRC(inode))
+ main_inode = HFSPLUS_I(inode).rsrc_inode;
+
+ if (!main_inode->i_nlink)
+ return 0;
+
+ if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
+ /* panic? */
+ return -EIO;
+
+ if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
+ /* panic? */
+ goto out;
+
+ if (S_ISDIR(main_inode->i_mode)) {
+ struct hfsplus_cat_folder *folder = &entry.folder;
+
+ if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
+ /* panic? */;
+ hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_folder));
+ /* simple node checks? */
+ hfsplus_set_perms(inode, &folder->permissions);
+ folder->access_date = hfsp_ut2mt(inode->i_atime);
+ folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
+ folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
+ folder->valence = cpu_to_be32(inode->i_size - 2);
+ hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_folder));
+ } else if (HFSPLUS_IS_RSRC(inode)) {
+ struct hfsplus_cat_file *file = &entry.file;
+ hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_file));
+ hfsplus_inode_write_fork(inode, &file->rsrc_fork);
+ hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_file));
+ } else {
+ struct hfsplus_cat_file *file = &entry.file;
+
+ if (fd.entrylength < sizeof(struct hfsplus_cat_file))
+ /* panic? */;
+ hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_file));
+ hfsplus_inode_write_fork(inode, &file->data_fork);
+ if (S_ISREG(inode->i_mode))
+ HFSPLUS_I(inode).dev = inode->i_nlink;
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
+ HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
+ hfsplus_set_perms(inode, &file->permissions);
+ if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
+ file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
+ else
+ file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
+ file->access_date = hfsp_ut2mt(inode->i_atime);
+ file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
+ file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
+ hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
+ sizeof(struct hfsplus_cat_file));
+ }
+out:
+ hfs_find_exit(&fd);
+ return 0;
+}