Ejemplos de nfs4_create_server en C++ (Cpp)

Ejemplo n.º 1

Archivo: nfs4super.c Proyecto: AmesianX/netlink-mmap

/*
 * Get the superblock for the NFS4 root partition
 */
static struct dentry *
nfs4_remote_mount(struct file_system_type *fs_type, int flags,
		  const char *dev_name, void *info)
{
	struct nfs_mount_info *mount_info = info;
	struct nfs_server *server;
	struct dentry *mntroot = ERR_PTR(-ENOMEM);

	mount_info->set_security = nfs_set_sb_security;

	/* Get a volume representation */
	server = nfs4_create_server(mount_info, &nfs_v4);
	if (IS_ERR(server)) {
		mntroot = ERR_CAST(server);
		goto out;
	}

	mntroot = nfs_fs_mount_common(server, flags, dev_name, mount_info, &nfs_v4);

out:
	return mntroot;
}

Ejemplo n.º 2

Archivo: super.c Proyecto: WiseMan787/ralink_sdk

/*
 * Get the superblock for an NFS4 mountpoint
 */
static int nfs4_get_sb(struct file_system_type *fs_type,
	int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
{
	struct nfs4_mount_data *data = raw_data;
	struct super_block *s;
	struct nfs_server *server;
	struct sockaddr_in addr;
	rpc_authflavor_t authflavour;
	struct nfs_fh mntfh;
	struct dentry *mntroot;
	char *mntpath = NULL, *hostname = NULL, ip_addr[16];
	void *p;
	int error;

	if (data == NULL) {
		dprintk("%s: missing data argument\n", __FUNCTION__);
		return -EINVAL;
	}
	if (data->version <= 0 || data->version > NFS4_MOUNT_VERSION) {
		dprintk("%s: bad mount version\n", __FUNCTION__);
		return -EINVAL;
	}

	/* We now require that the mount process passes the remote address */
	if (data->host_addrlen != sizeof(addr))
		return -EINVAL;

	if (copy_from_user(&addr, data->host_addr, sizeof(addr)))
		return -EFAULT;

	if (addr.sin_family != AF_INET ||
	    addr.sin_addr.s_addr == INADDR_ANY
	    ) {
		dprintk("%s: mount program didn't pass remote IP address!\n",
				__FUNCTION__);
		return -EINVAL;
	}
	/* RFC3530: The default port for NFS is 2049 */
	if (addr.sin_port == 0)
		addr.sin_port = htons(NFS_PORT);

	/* Grab the authentication type */
	authflavour = RPC_AUTH_UNIX;
	if (data->auth_flavourlen != 0) {
		if (data->auth_flavourlen != 1) {
			dprintk("%s: Invalid number of RPC auth flavours %d.\n",
					__FUNCTION__, data->auth_flavourlen);
			error = -EINVAL;
			goto out_err_noserver;
		}

		if (copy_from_user(&authflavour, data->auth_flavours,
				   sizeof(authflavour))) {
			error = -EFAULT;
			goto out_err_noserver;
		}
	}

	p = nfs_copy_user_string(NULL, &data->hostname, 256);
	if (IS_ERR(p))
		goto out_err;
	hostname = p;

	p = nfs_copy_user_string(NULL, &data->mnt_path, 1024);
	if (IS_ERR(p))
		goto out_err;
	mntpath = p;

	dprintk("MNTPATH: %s\n", mntpath);

	p = nfs_copy_user_string(ip_addr, &data->client_addr,
				 sizeof(ip_addr) - 1);
	if (IS_ERR(p))
		goto out_err;

	/* Get a volume representation */
	server = nfs4_create_server(data, hostname, &addr, mntpath, ip_addr,
				    authflavour, &mntfh);
	if (IS_ERR(server)) {
		error = PTR_ERR(server);
		goto out_err_noserver;
	}

	/* Get a superblock - note that we may end up sharing one that already exists */
	s = sget(fs_type, nfs_compare_super, nfs_set_super, server);
	if (IS_ERR(s)) {
		error = PTR_ERR(s);
		goto out_free;
	}

	if (s->s_fs_info != server) {
		nfs_free_server(server);
		server = NULL;
	}

	if (!s->s_root) {
		/* initial superblock/root creation */
		s->s_flags = flags;
		nfs4_fill_super(s);
	}

	mntroot = nfs4_get_root(s, &mntfh);
	if (IS_ERR(mntroot)) {
		error = PTR_ERR(mntroot);
		goto error_splat_super;
	}

	s->s_flags |= MS_ACTIVE;
	mnt->mnt_sb = s;
	mnt->mnt_root = mntroot;
	kfree(mntpath);
	kfree(hostname);
	return 0;

out_err:
	error = PTR_ERR(p);
	goto out_err_noserver;

out_free:
	nfs_free_server(server);
out_err_noserver:
	kfree(mntpath);
	kfree(hostname);
	return error;

error_splat_super:
	up_write(&s->s_umount);
	deactivate_super(s);
	goto out_err_noserver;
}