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Commit 78a3fa4f authored by Miklos Szeredi's avatar Miklos Szeredi
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ovl: use generic_readlink 



All filesystems that are backers for overlayfs would also use
generic_readlink().  Move this logic to the overlay itself, which is a nice
cleanup.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent cb348edb

fs/overlayfs/inode.c

+1 −20
Original line number Diff line number Diff line
@@ -176,25 +176,6 @@ static const char *ovl_get_link(struct dentry *dentry, 
	return p;

}



static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz)

{

	struct path realpath;

	struct inode *realinode;

	const struct cred *old_cred;

	int err;



	ovl_path_real(dentry, &realpath);

	realinode = realpath.dentry->d_inode;



	if (!realinode->i_op->readlink)

		return -EINVAL;



	old_cred = ovl_override_creds(dentry->d_sb);

	err = realinode->i_op->readlink(realpath.dentry, buf, bufsiz);

	revert_creds(old_cred);

	return err;

}



bool ovl_is_private_xattr(const char *name)

{

	return strncmp(name, OVL_XATTR_PREFIX,
@@ -381,7 +362,7 @@ static const struct inode_operations ovl_file_inode_operations = { 
static const struct inode_operations ovl_symlink_inode_operations = {

	.setattr	= ovl_setattr,

	.get_link	= ovl_get_link,

	.readlink	= ovl_readlink,

	.readlink	= generic_readlink,

	.getattr	= ovl_getattr,

	.setxattr	= generic_setxattr,

	.getxattr	= generic_getxattr,