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!

1 files changed, 330 insertions, 0 deletions

diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
new file mode 100644
index 00000000000..c55998262ae
--- /dev/null
+++ b/fs/hfs/dir.c
@@ -0,0 +1,330 @@
+/*
+ *  linux/fs/hfs/dir.c
+ *
+ * Copyright (C) 1995-1997  Paul H. Hargrove
+ * (C) 2003 Ardis Technologies <roman@ardistech.com>
+ * This file may be distributed under the terms of the GNU General Public License.
+ *
+ * This file contains directory-related functions independent of which
+ * scheme is being used to represent forks.
+ *
+ * Based on the minix file system code, (C) 1991, 1992 by Linus Torvalds
+ */
+
+#include "hfs_fs.h"
+#include "btree.h"
+
+/*
+ * hfs_lookup()
+ */
+static struct dentry *hfs_lookup(struct inode *dir, struct dentry *dentry,
+                                 struct nameidata *nd)
+{
+        hfs_cat_rec rec;
+        struct hfs_find_data fd;
+        struct inode *inode = NULL;
+        int res;
+
+        dentry->d_op = &hfs_dentry_operations;
+
+        hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
+        hfs_cat_build_key(fd.search_key, dir->i_ino, &dentry->d_name);
+        res = hfs_brec_read(&fd, &rec, sizeof(rec));
+        if (res) {
+                hfs_find_exit(&fd);
+                if (res == -ENOENT) {
+                        /* No such entry */
+                        inode = NULL;
+                        goto done;
+                }
+                return ERR_PTR(res);
+        }
+        inode = hfs_iget(dir->i_sb, &fd.search_key->cat, &rec);
+        hfs_find_exit(&fd);
+        if (!inode)
+                return ERR_PTR(-EACCES);
+done:
+        d_add(dentry, inode);
+        return NULL;
+}
+
+/*
+ * hfs_readdir
+ */
+static int hfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+{
+        struct inode *inode = filp->f_dentry->d_inode;
+        struct super_block *sb = inode->i_sb;
+        int len, err;
+        char strbuf[HFS_NAMELEN + 1];
+        union hfs_cat_rec entry;
+        struct hfs_find_data fd;
+        struct hfs_readdir_data *rd;
+        u16 type;
+
+        if (filp->f_pos >= inode->i_size)
+                return 0;
+
+        hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+        hfs_cat_build_key(fd.search_key, inode->i_ino, NULL);
+        err = hfs_brec_find(&fd);
+        if (err)
+                goto out;
+
+        switch ((u32)filp->f_pos) {
+        case 0:
+                /* This is completely artificial... */
+                if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
+                        goto out;
+                filp->f_pos++;
+                /* fall through */
+        case 1:
+                hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
+                if (entry.type != HFS_CDR_THD) {
+                        printk("HFS: bad catalog folder thread\n");
+                        err = -EIO;
+                        goto out;
+                }
+                //if (fd.entrylength < HFS_MIN_THREAD_SZ) {
+                //      printk("HFS: truncated catalog thread\n");
+                //      err = -EIO;
+                //      goto out;
+                //}
+                if (filldir(dirent, "..", 2, 1,
+                            be32_to_cpu(entry.thread.ParID), DT_DIR))
+                        goto out;
+                filp->f_pos++;
+                /* fall through */
+        default:
+                if (filp->f_pos >= inode->i_size)
+                        goto out;
+                err = hfs_brec_goto(&fd, filp->f_pos - 1);
+                if (err)
+                        goto out;
+        }
+
+        for (;;) {
+                if (be32_to_cpu(fd.key->cat.ParID) != inode->i_ino) {
+                        printk("HFS: walked past end of dir\n");
+                        err = -EIO;
+                        goto out;
+                }
+                hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
+                type = entry.type;
+                len = hfs_mac2triv(strbuf, &fd.key->cat.CName);
+                if (type == HFS_CDR_DIR) {
+                        if (fd.entrylength < sizeof(struct hfs_cat_dir)) {
+                                printk("HFS: small dir entry\n");
+                                err = -EIO;
+                                goto out;
+                        }
+                        if (filldir(dirent, strbuf, len, filp->f_pos,
+                                    be32_to_cpu(entry.dir.DirID), DT_DIR))
+                                break;
+                } else if (type == HFS_CDR_FIL) {
+                        if (fd.entrylength < sizeof(struct hfs_cat_file)) {
+                                printk("HFS: small file entry\n");
+                                err = -EIO;
+                                goto out;
+                        }
+                        if (filldir(dirent, strbuf, len, filp->f_pos,
+                                    be32_to_cpu(entry.file.FlNum), DT_REG))
+                                break;
+                } else {
+                        printk("HFS: bad catalog entry type %d\n", type);
+                        err = -EIO;
+                        goto out;
+                }
+                filp->f_pos++;
+                if (filp->f_pos >= inode->i_size)
+                        goto out;
+                err = hfs_brec_goto(&fd, 1);
+                if (err)
+                        goto out;
+        }
+        rd = filp->private_data;
+        if (!rd) {
+                rd = kmalloc(sizeof(struct hfs_readdir_data), GFP_KERNEL);
+                if (!rd) {
+                        err = -ENOMEM;
+                        goto out;
+                }
+                filp->private_data = rd;
+                rd->file = filp;
+                list_add(&rd->list, &HFS_I(inode)->open_dir_list);
+        }
+        memcpy(&rd->key, &fd.key, sizeof(struct hfs_cat_key));
+out:
+        hfs_find_exit(&fd);
+        return err;
+}
+
+static int hfs_dir_release(struct inode *inode, struct file *file)
+{
+        struct hfs_readdir_data *rd = file->private_data;
+        if (rd) {
+                list_del(&rd->list);
+                kfree(rd);
+        }
+        return 0;
+}
+
+/*
+ * hfs_create()
+ *
+ * This is the create() entry in the inode_operations structure for
+ * regular HFS directories.  The purpose is to create a new file in
+ * a directory and return a corresponding inode, given the inode for
+ * the directory and the name (and its length) of the new file.
+ */
+static int hfs_create(struct inode *dir, struct dentry *dentry, int mode,
+                      struct nameidata *nd)
+{
+        struct inode *inode;
+        int res;
+
+        inode = hfs_new_inode(dir, &dentry->d_name, mode);
+        if (!inode)
+                return -ENOSPC;
+
+        res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
+        if (res) {
+                inode->i_nlink = 0;
+                hfs_delete_inode(inode);
+                iput(inode);
+                return res;
+        }
+        d_instantiate(dentry, inode);
+        mark_inode_dirty(inode);
+        return 0;
+}
+
+/*
+ * hfs_mkdir()
+ *
+ * This is the mkdir() entry in the inode_operations structure for
+ * regular HFS directories.  The purpose is to create a new directory
+ * in a directory, given the inode for the parent directory and the
+ * name (and its length) of the new directory.
+ */
+static int hfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+{
+        struct inode *inode;
+        int res;
+
+        inode = hfs_new_inode(dir, &dentry->d_name, S_IFDIR | mode);
+        if (!inode)
+                return -ENOSPC;
+
+        res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
+        if (res) {
+                inode->i_nlink = 0;
+                hfs_delete_inode(inode);
+                iput(inode);
+                return res;
+        }
+        d_instantiate(dentry, inode);
+        mark_inode_dirty(inode);
+        return 0;
+}
+
+/*
+ * hfs_unlink()
+ *
+ * This is the unlink() entry in the inode_operations structure for
+ * regular HFS directories.  The purpose is to delete an existing
+ * file, given the inode for the parent directory and the name
+ * (and its length) of the existing file.
+ */
+static int hfs_unlink(struct inode *dir, struct dentry *dentry)
+{
+        struct inode *inode;
+        int res;
+
+        inode = dentry->d_inode;
+        res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name);
+        if (res)
+                return res;
+
+        inode->i_nlink--;
+        hfs_delete_inode(inode);
+        inode->i_ctime = CURRENT_TIME_SEC;
+        mark_inode_dirty(inode);
+
+        return res;
+}
+
+/*
+ * hfs_rmdir()
+ *
+ * This is the rmdir() entry in the inode_operations structure for
+ * regular HFS directories.  The purpose is to delete an existing
+ * directory, given the inode for the parent directory and the name
+ * (and its length) of the existing directory.
+ */
+static int hfs_rmdir(struct inode *dir, struct dentry *dentry)
+{
+        struct inode *inode;
+        int res;
+
+        inode = dentry->d_inode;
+        if (inode->i_size != 2)
+                return -ENOTEMPTY;
+        res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name);
+        if (res)
+                return res;
+        inode->i_nlink = 0;
+        inode->i_ctime = CURRENT_TIME_SEC;
+        hfs_delete_inode(inode);
+        mark_inode_dirty(inode);
+        return 0;
+}
+
+/*
+ * hfs_rename()
+ *
+ * This is the rename() entry in the inode_operations structure for
+ * regular HFS directories.  The purpose is to rename an existing
+ * file or directory, given the inode for the current directory and
+ * the name (and its length) of the existing file/directory and the
+ * inode for the new directory and the name (and its length) of the
+ * new file/directory.
+ * XXX: how do you handle must_be dir?
+ */
+static int hfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+                      struct inode *new_dir, struct dentry *new_dentry)
+{
+        int res;
+
+        /* Unlink destination if it already exists */
+        if (new_dentry->d_inode) {
+                res = hfs_unlink(new_dir, new_dentry);
+                if (res)
+                        return res;
+        }
+
+        res = hfs_cat_move(old_dentry->d_inode->i_ino,
+                           old_dir, &old_dentry->d_name,
+                           new_dir, &new_dentry->d_name);
+        if (!res)
+                hfs_cat_build_key((btree_key *)&HFS_I(old_dentry->d_inode)->cat_key,
+                                  new_dir->i_ino, &new_dentry->d_name);
+        return res;
+}
+
+struct file_operations hfs_dir_operations = {
+        .read           = generic_read_dir,
+        .readdir        = hfs_readdir,
+        .llseek         = generic_file_llseek,
+        .release        = hfs_dir_release,
+};
+
+struct inode_operations hfs_dir_inode_operations = {
+        .create         = hfs_create,
+        .lookup         = hfs_lookup,
+        .unlink         = hfs_unlink,
+        .mkdir          = hfs_mkdir,
+        .rmdir          = hfs_rmdir,
+        .rename         = hfs_rename,
+        .setattr        = hfs_inode_setattr,
+};