Linux-2.6.12-rc2v2.6.12-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, 375 insertions, 0 deletions

diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
new file mode 100644
index 0000000..2958cde
--- /dev/null
+++ b/fs/ufs/namei.c
@@ -0,0 +1,375 @@
+/*
+ * linux/fs/ufs/namei.c
+ *
+ * Copyright (C) 1998
+ * Daniel Pirkl <daniel.pirkl@email.cz>
+ * Charles University, Faculty of Mathematics and Physics
+ *
+ *  from
+ *
+ *  linux/fs/ext2/namei.c
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ *  from
+ *
+ *  linux/fs/minix/namei.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ *  Big-endian to little-endian byte-swapping/bitmaps by
+ *        David S. Miller (davem@caip.rutgers.edu), 1995
+ */
+
+#include <linux/time.h>
+#include <linux/fs.h>
+#include <linux/ufs_fs.h>
+#include <linux/smp_lock.h>
+#include <linux/buffer_head.h>
+#include "swab.h"	/* will go away - see comment in mknod() */
+#include "util.h"
+
+/*
+#undef UFS_NAMEI_DEBUG
+*/
+#define UFS_NAMEI_DEBUG
+
+#ifdef UFS_NAMEI_DEBUG
+#define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
+#else
+#define UFSD(x)
+#endif
+
+static inline void ufs_inc_count(struct inode *inode)
+{
+	inode->i_nlink++;
+	mark_inode_dirty(inode);
+}
+
+static inline void ufs_dec_count(struct inode *inode)
+{
+	inode->i_nlink--;
+	mark_inode_dirty(inode);
+}
+
+static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode)
+{
+	int err = ufs_add_link(dentry, inode);
+	if (!err) {
+		d_instantiate(dentry, inode);
+		return 0;
+	}
+	ufs_dec_count(inode);
+	iput(inode);
+	return err;
+}
+
+static struct dentry *ufs_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
+{
+	struct inode * inode = NULL;
+	ino_t ino;
+	
+	if (dentry->d_name.len > UFS_MAXNAMLEN)
+		return ERR_PTR(-ENAMETOOLONG);
+
+	lock_kernel();
+	ino = ufs_inode_by_name(dir, dentry);
+	if (ino) {
+		inode = iget(dir->i_sb, ino);
+		if (!inode) {
+			unlock_kernel();
+			return ERR_PTR(-EACCES);
+		}
+	}
+	unlock_kernel();
+	d_add(dentry, inode);
+	return NULL;
+}
+
+/*
+ * By the time this is called, we already have created
+ * the directory cache entry for the new file, but it
+ * is so far negative - it has no inode.
+ *
+ * If the create succeeds, we fill in the inode information
+ * with d_instantiate(). 
+ */
+static int ufs_create (struct inode * dir, struct dentry * dentry, int mode,
+		struct nameidata *nd)
+{
+	struct inode * inode = ufs_new_inode(dir, mode);
+	int err = PTR_ERR(inode);
+	if (!IS_ERR(inode)) {
+		inode->i_op = &ufs_file_inode_operations;
+		inode->i_fop = &ufs_file_operations;
+		inode->i_mapping->a_ops = &ufs_aops;
+		mark_inode_dirty(inode);
+		lock_kernel();
+		err = ufs_add_nondir(dentry, inode);
+		unlock_kernel();
+	}
+	return err;
+}
+
+static int ufs_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
+{
+	struct inode *inode;
+	int err;
+
+	if (!old_valid_dev(rdev))
+		return -EINVAL;
+	inode = ufs_new_inode(dir, mode);
+	err = PTR_ERR(inode);
+	if (!IS_ERR(inode)) {
+		init_special_inode(inode, mode, rdev);
+		/* NOTE: that'll go when we get wide dev_t */
+		ufs_set_inode_dev(inode->i_sb, UFS_I(inode), rdev);
+		mark_inode_dirty(inode);
+		lock_kernel();
+		err = ufs_add_nondir(dentry, inode);
+		unlock_kernel();
+	}
+	return err;
+}
+
+static int ufs_symlink (struct inode * dir, struct dentry * dentry,
+	const char * symname)
+{
+	struct super_block * sb = dir->i_sb;
+	int err = -ENAMETOOLONG;
+	unsigned l = strlen(symname)+1;
+	struct inode * inode;
+
+	if (l > sb->s_blocksize)
+		goto out;
+
+	lock_kernel();
+	inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
+	err = PTR_ERR(inode);
+	if (IS_ERR(inode))
+		goto out;
+
+	if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
+		/* slow symlink */
+		inode->i_op = &page_symlink_inode_operations;
+		inode->i_mapping->a_ops = &ufs_aops;
+		err = page_symlink(inode, symname, l);
+		if (err)
+			goto out_fail;
+	} else {
+		/* fast symlink */
+		inode->i_op = &ufs_fast_symlink_inode_operations;
+		memcpy((char*)&UFS_I(inode)->i_u1.i_data,symname,l);
+		inode->i_size = l-1;
+	}
+	mark_inode_dirty(inode);
+
+	err = ufs_add_nondir(dentry, inode);
+out:
+	unlock_kernel();
+	return err;
+
+out_fail:
+	ufs_dec_count(inode);
+	iput(inode);
+	goto out;
+}
+
+static int ufs_link (struct dentry * old_dentry, struct inode * dir,
+	struct dentry *dentry)
+{
+	struct inode *inode = old_dentry->d_inode;
+	int error;
+
+	lock_kernel();
+	if (inode->i_nlink >= UFS_LINK_MAX) {
+		unlock_kernel();
+		return -EMLINK;
+	}
+
+	inode->i_ctime = CURRENT_TIME_SEC;
+	ufs_inc_count(inode);
+	atomic_inc(&inode->i_count);
+
+	error = ufs_add_nondir(dentry, inode);
+	unlock_kernel();
+	return error;
+}
+
+static int ufs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
+{
+	struct inode * inode;
+	int err = -EMLINK;
+
+	if (dir->i_nlink >= UFS_LINK_MAX)
+		goto out;
+
+	lock_kernel();
+	ufs_inc_count(dir);
+
+	inode = ufs_new_inode(dir, S_IFDIR|mode);
+	err = PTR_ERR(inode);
+	if (IS_ERR(inode))
+		goto out_dir;
+
+	inode->i_op = &ufs_dir_inode_operations;
+	inode->i_fop = &ufs_dir_operations;
+
+	ufs_inc_count(inode);
+
+	err = ufs_make_empty(inode, dir);
+	if (err)
+		goto out_fail;
+
+	err = ufs_add_link(dentry, inode);
+	if (err)
+		goto out_fail;
+	unlock_kernel();
+
+	d_instantiate(dentry, inode);
+out:
+	return err;
+
+out_fail:
+	ufs_dec_count(inode);
+	ufs_dec_count(inode);
+	iput (inode);
+out_dir:
+	ufs_dec_count(dir);
+	unlock_kernel();
+	goto out;
+}
+
+static int ufs_unlink(struct inode * dir, struct dentry *dentry)
+{
+	struct inode * inode = dentry->d_inode;
+	struct buffer_head * bh;
+	struct ufs_dir_entry * de;
+	int err = -ENOENT;
+
+	lock_kernel();
+	de = ufs_find_entry (dentry, &bh);
+	if (!de)
+		goto out;
+
+	err = ufs_delete_entry (dir, de, bh);
+	if (err)
+		goto out;
+
+	inode->i_ctime = dir->i_ctime;
+	ufs_dec_count(inode);
+	err = 0;
+out:
+	unlock_kernel();
+	return err;
+}
+
+static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
+{
+	struct inode * inode = dentry->d_inode;
+	int err= -ENOTEMPTY;
+
+	lock_kernel();
+	if (ufs_empty_dir (inode)) {
+		err = ufs_unlink(dir, dentry);
+		if (!err) {
+			inode->i_size = 0;
+			ufs_dec_count(inode);
+			ufs_dec_count(dir);
+		}
+	}
+	unlock_kernel();
+	return err;
+}
+
+static int ufs_rename (struct inode * old_dir, struct dentry * old_dentry,
+	struct inode * new_dir,	struct dentry * new_dentry )
+{
+	struct inode *old_inode = old_dentry->d_inode;
+	struct inode *new_inode = new_dentry->d_inode;
+	struct buffer_head *dir_bh = NULL;
+	struct ufs_dir_entry *dir_de = NULL;
+	struct buffer_head *old_bh;
+	struct ufs_dir_entry *old_de;
+	int err = -ENOENT;
+
+	lock_kernel();
+	old_de = ufs_find_entry (old_dentry, &old_bh);
+	if (!old_de)
+		goto out;
+
+	if (S_ISDIR(old_inode->i_mode)) {
+		err = -EIO;
+		dir_de = ufs_dotdot(old_inode, &dir_bh);
+		if (!dir_de)
+			goto out_old;
+	}
+
+	if (new_inode) {
+		struct buffer_head *new_bh;
+		struct ufs_dir_entry *new_de;
+
+		err = -ENOTEMPTY;
+		if (dir_de && !ufs_empty_dir (new_inode))
+			goto out_dir;
+		err = -ENOENT;
+		new_de = ufs_find_entry (new_dentry, &new_bh);
+		if (!new_de)
+			goto out_dir;
+		ufs_inc_count(old_inode);
+		ufs_set_link(new_dir, new_de, new_bh, old_inode);
+		new_inode->i_ctime = CURRENT_TIME_SEC;
+		if (dir_de)
+			new_inode->i_nlink--;
+		ufs_dec_count(new_inode);
+	} else {
+		if (dir_de) {
+			err = -EMLINK;
+			if (new_dir->i_nlink >= UFS_LINK_MAX)
+				goto out_dir;
+		}
+		ufs_inc_count(old_inode);
+		err = ufs_add_link(new_dentry, old_inode);
+		if (err) {
+			ufs_dec_count(old_inode);
+			goto out_dir;
+		}
+		if (dir_de)
+			ufs_inc_count(new_dir);
+	}
+
+	ufs_delete_entry (old_dir, old_de, old_bh);
+
+	ufs_dec_count(old_inode);
+
+	if (dir_de) {
+		ufs_set_link(old_inode, dir_de, dir_bh, new_dir);
+		ufs_dec_count(old_dir);
+	}
+	unlock_kernel();
+	return 0;
+
+out_dir:
+	if (dir_de)
+		brelse(dir_bh);
+out_old:
+	brelse (old_bh);
+out:
+	unlock_kernel();
+	return err;
+}
+
+struct inode_operations ufs_dir_inode_operations = {
+	.create		= ufs_create,
+	.lookup		= ufs_lookup,
+	.link		= ufs_link,
+	.unlink		= ufs_unlink,
+	.symlink	= ufs_symlink,
+	.mkdir		= ufs_mkdir,
+	.rmdir		= ufs_rmdir,
+	.mknod		= ufs_mknod,
+	.rename		= ufs_rename,
+};