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Commit 3e297b61 authored by Al Viro's avatar Al Viro
Browse files

Restore LOOKUP_DIRECTORY hint handling in final lookup on open() 



	Lose want_dir argument, while we are at it - since now
nd->flags & LOOKUP_DIRECTORY is equivalent to it.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 01e77706

fs/namei.c

+10 −8
Original line number Diff line number Diff line
@@ -1610,8 +1610,7 @@ static struct file *finish_open(struct nameidata *nd, 


static struct file *do_last(struct nameidata *nd, struct path *path,

			    int open_flag, int acc_mode,

			    int mode, const char *pathname,

			    int *want_dir)

			    int mode, const char *pathname)

{

	struct dentry *dir = nd->path.dentry;

	struct file *filp;
@@ -1642,7 +1641,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path, 
	if (nd->last.name[nd->last.len]) {

		if (open_flag & O_CREAT)

			goto exit;

		*want_dir = 1;

		nd->flags |= LOOKUP_DIRECTORY;

	}



	/* just plain open? */
@@ -1656,8 +1655,10 @@ static struct file *do_last(struct nameidata *nd, struct path *path, 
		if (path->dentry->d_inode->i_op->follow_link)

			return NULL;

		error = -ENOTDIR;

		if (*want_dir && !path->dentry->d_inode->i_op->lookup)

		if (nd->flags & LOOKUP_DIRECTORY) {

			if (!path->dentry->d_inode->i_op->lookup)

				goto exit_dput;

		}

		path_to_nameidata(path, nd);

		audit_inode(pathname, nd->path.dentry);

		goto ok;
@@ -1766,7 +1767,6 @@ struct file *do_filp_open(int dfd, const char *pathname, 
	int count = 0;

	int flag = open_to_namei_flags(open_flag);

	int force_reval = 0;

	int want_dir = open_flag & O_DIRECTORY;



	if (!(open_flag & O_CREAT))

		mode = 0;
@@ -1828,7 +1828,9 @@ struct file *do_filp_open(int dfd, const char *pathname, 
		if (open_flag & O_EXCL)

			nd.flags |= LOOKUP_EXCL;

	}

	filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);

	if (open_flag & O_DIRECTORY)

		nd.flags |= LOOKUP_DIRECTORY;

	filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname);

	while (unlikely(!filp)) { /* trailing symlink */

		struct path holder;

		struct inode *inode = path.dentry->d_inode;
@@ -1866,7 +1868,7 @@ struct file *do_filp_open(int dfd, const char *pathname, 
		}

		holder = path;

		nd.flags &= ~LOOKUP_PARENT;

		filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);

		filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname);

		if (inode->i_op->put_link)

			inode->i_op->put_link(holder.dentry, &nd, cookie);

		path_put(&holder);