示例#1
0
文件: nfs3proc.c 项目: a342604203/nfs
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
    struct nfs3_linkargs	arg = {
        .fromfh		= NFS_FH(inode),
        .tofh		= NFS_FH(dir),
        .toname		= name->name,
        .tolen		= name->len
    };
    struct nfs3_linkres	res;
    struct rpc_message msg = {
        .rpc_proc	= &nfs3_procedures[NFS3PROC_LINK],
        .rpc_argp	= &arg,
        .rpc_resp	= &res,
    };
    int status = -ENOMEM;

    dprintk("NFS call  link %s\n", name->name);
    res.fattr = nfs_alloc_fattr();
    res.dir_attr = nfs_alloc_fattr();
    if (res.fattr == NULL || res.dir_attr == NULL)
        goto out;

    zql_control_test(NFS_SERVER(inode));
    status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
    nfs_post_op_update_inode(dir, res.dir_attr);
    nfs_post_op_update_inode(inode, res.fattr);
out:
    nfs_free_fattr(res.dir_attr);
    nfs_free_fattr(res.fattr);
    dprintk("NFS reply link: %d\n", status);
    return status;
}

static int
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
                  unsigned int len, struct iattr *sattr)
{
    struct nfs3_createdata *data;
    int status = -ENOMEM;

    if (len > NFS3_MAXPATHLEN)
        return -ENAMETOOLONG;

    dprintk("NFS call  symlink %pd\n", dentry);

    data = nfs3_alloc_createdata();
    if (data == NULL)
        goto out;
    data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
    data->arg.symlink.fromfh = NFS_FH(dir);
    data->arg.symlink.fromname = dentry->d_name.name;
    data->arg.symlink.fromlen = dentry->d_name.len;
    data->arg.symlink.pages = &page;
    data->arg.symlink.pathlen = len;
    data->arg.symlink.sattr = sattr;

    zql_control_test(NFS_SERVER(dir));
    status = nfs3_do_create(dir, dentry, data);

    nfs3_free_createdata(data);
out:
    dprintk("NFS reply symlink: %d\n", status);
    return status;
}

static int
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
    struct posix_acl *default_acl, *acl;
    struct nfs3_createdata *data;
    int status = -ENOMEM;

    dprintk("NFS call  mkdir %pd\n", dentry);

    data = nfs3_alloc_createdata();
    if (data == NULL)
        goto out;

    status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
    if (status)
        goto out;

    data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
    data->arg.mkdir.fh = NFS_FH(dir);
    data->arg.mkdir.name = dentry->d_name.name;
    data->arg.mkdir.len = dentry->d_name.len;
    data->arg.mkdir.sattr = sattr;

    zql_control_test(NFS_SERVER(dir));
    status = nfs3_do_create(dir, dentry, data);
    if (status != 0)
        goto out_release_acls;

    status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);

out_release_acls:
    posix_acl_release(acl);
    posix_acl_release(default_acl);
out:
    nfs3_free_createdata(data);
    dprintk("NFS reply mkdir: %d\n", status);
    return status;
}

static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
    struct nfs_fattr	*dir_attr;
    struct nfs3_diropargs	arg = {
        .fh		= NFS_FH(dir),
        .name		= name->name,
        .len		= name->len
    };
    struct rpc_message msg = {
        .rpc_proc	= &nfs3_procedures[NFS3PROC_RMDIR],
        .rpc_argp	= &arg,
    };
    int status = -ENOMEM;

    dprintk("NFS call  rmdir %s\n", name->name);
    dir_attr = nfs_alloc_fattr();
    if (dir_attr == NULL)
        goto out;

    msg.rpc_resp = dir_attr;
    zql_control_test(NFS_SERVER(dir));
    status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
    nfs_post_op_update_inode(dir, dir_attr);
    nfs_free_fattr(dir_attr);
out:
    dprintk("NFS reply rmdir: %d\n", status);
    return status;
}

/*
 * The READDIR implementation is somewhat hackish - we pass the user buffer
 * to the encode function, which installs it in the receive iovec.
 * The decode function itself doesn't perform any decoding, it just makes
 * sure the reply is syntactically correct.
 *
 * Also note that this implementation handles both plain readdir and
 * readdirplus.
 */
static int
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
                  u64 cookie, struct page **pages, unsigned int count, int plus)
{
    struct inode		*dir = dentry->d_inode;
    __be32			*verf = NFS_I(dir)->cookieverf;
    struct nfs3_readdirargs	arg = {
        .fh		= NFS_FH(dir),
        .cookie		= cookie,
        .verf		= {verf[0], verf[1]},
        .plus		= plus,
        .count		= count,
        .pages		= pages
    };
    struct nfs3_readdirres	res = {
        .verf		= verf,
        .plus		= plus
    };
    struct rpc_message	msg = {
        .rpc_proc	= &nfs3_procedures[NFS3PROC_READDIR],
        .rpc_argp	= &arg,
        .rpc_resp	= &res,
        .rpc_cred	= cred
    };
    int status = -ENOMEM;

    if (plus)
        msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];

    dprintk("NFS call  readdir%s %d\n",
            plus? "plus" : "", (unsigned int) cookie);

    res.dir_attr = nfs_alloc_fattr();
    if (res.dir_attr == NULL)
        goto out;

    zql_control_test(NFS_SERVER(dir));
    status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);

    nfs_invalidate_atime(dir);
    nfs_refresh_inode(dir, res.dir_attr);

    nfs_free_fattr(res.dir_attr);
out:
    dprintk("NFS reply readdir%s: %d\n",
            plus? "plus" : "", status);
    return status;
}

static int
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
                dev_t rdev)
{
    struct posix_acl *default_acl, *acl;
    struct nfs3_createdata *data;
    int status = -ENOMEM;

    dprintk("NFS call  mknod %pd %u:%u\n", dentry,
            MAJOR(rdev), MINOR(rdev));

    data = nfs3_alloc_createdata();
    if (data == NULL)
        goto out;

    status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
    if (status)
        goto out;

    data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
    data->arg.mknod.fh = NFS_FH(dir);
    data->arg.mknod.name = dentry->d_name.name;
    data->arg.mknod.len = dentry->d_name.len;
    data->arg.mknod.sattr = sattr;
    data->arg.mknod.rdev = rdev;

    switch (sattr->ia_mode & S_IFMT) {
    case S_IFBLK:
        data->arg.mknod.type = NF3BLK;
        break;
    case S_IFCHR:
        data->arg.mknod.type = NF3CHR;
        break;
    case S_IFIFO:
        data->arg.mknod.type = NF3FIFO;
        break;
    case S_IFSOCK:
        data->arg.mknod.type = NF3SOCK;
        break;
    default:
        status = -EINVAL;
        goto out;
    }

    zql_control_test(NFS_SERVER(dir));
    status = nfs3_do_create(dir, dentry, data);
    if (status != 0)
        goto out_release_acls;

    status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);

out_release_acls:
    posix_acl_release(acl);
    posix_acl_release(default_acl);
out:
    nfs3_free_createdata(data);
    dprintk("NFS reply mknod: %d\n", status);
    return status;
}

static int
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
                 struct nfs_fsstat *stat)
{
    struct rpc_message msg = {
        .rpc_proc	= &nfs3_procedures[NFS3PROC_FSSTAT],
        .rpc_argp	= fhandle,
        .rpc_resp	= stat,
    };
    int	status;

    dprintk("NFS call  fsstat\n");
    nfs_fattr_init(stat->fattr);
    zql_control_test(server);
    status = rpc_call_sync(server->client, &msg, 0);
    dprintk("NFS reply fsstat: %d\n", status);
    return status;
}

static int
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
               struct nfs_fsinfo *info)
{
    struct rpc_message msg = {
        .rpc_proc	= &nfs3_procedures[NFS3PROC_FSINFO],
        .rpc_argp	= fhandle,
        .rpc_resp	= info,
    };
    int	status;

    dprintk("NFS call  fsinfo\n");
    nfs_fattr_init(info->fattr);
    status = rpc_call_sync(client, &msg, 0);
    dprintk("NFS reply fsinfo: %d\n", status);
    return status;
}

/*
 * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
 * nfs_create_server
 */
static int
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
                 struct nfs_fsinfo *info)
{
    int	status;

    zql_control_test(server);
    status = do_proc_fsinfo(server->client, fhandle, info);
    if (status && server->nfs_client->cl_rpcclient != server->client)
        status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
    return status;
}
示例#2
0
static int
nfs3_proc_remove(struct inode *dir, struct qstr *name)
{
	struct nfs_removeargs arg = {
		.fh = NFS_FH(dir),
		.name.len = name->len,
		.name.name = name->name,
	};
	struct nfs_removeres res;
	struct rpc_message msg = {
		.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
		.rpc_argp = &arg,
		.rpc_resp = &res,
	};
	int status = -ENOMEM;

	dprintk("NFS call  remove %s\n", name->name);
	res.dir_attr = nfs_alloc_fattr();
	if (res.dir_attr == NULL)
		goto out;

	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
	nfs_post_op_update_inode(dir, res.dir_attr);
	nfs_free_fattr(res.dir_attr);
out:
	dprintk("NFS reply remove: %d\n", status);
	return status;
}

static void
nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
	msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
}

static int
nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
{
	struct nfs_removeres *res;
	if (nfs3_async_handle_jukebox(task, dir))
		return 0;
	res = task->tk_msg.rpc_resp;
	nfs_post_op_update_inode(dir, res->dir_attr);
	return 1;
}

static void
nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
{
	msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
}

static int
nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
		      struct inode *new_dir)
{
	struct nfs_renameres *res;

	if (nfs3_async_handle_jukebox(task, old_dir))
		return 0;
	res = task->tk_msg.rpc_resp;

	nfs_post_op_update_inode(old_dir, res->old_fattr);
	nfs_post_op_update_inode(new_dir, res->new_fattr);
	return 1;
}

static int
nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
		 struct inode *new_dir, struct qstr *new_name)
{
	struct nfs_renameargs	arg = {
		.old_dir	= NFS_FH(old_dir),
		.old_name	= old_name,
		.new_dir	= NFS_FH(new_dir),
		.new_name	= new_name,
	};
	struct nfs_renameres res;
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_RENAME],
		.rpc_argp	= &arg,
		.rpc_resp	= &res,
	};
	int status = -ENOMEM;

	dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);

	res.old_fattr = nfs_alloc_fattr();
	res.new_fattr = nfs_alloc_fattr();
	if (res.old_fattr == NULL || res.new_fattr == NULL)
		goto out;

	status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
	nfs_post_op_update_inode(old_dir, res.old_fattr);
	nfs_post_op_update_inode(new_dir, res.new_fattr);
out:
	nfs_free_fattr(res.old_fattr);
	nfs_free_fattr(res.new_fattr);
	dprintk("NFS reply rename: %d\n", status);
	return status;
}

static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
	struct nfs3_linkargs	arg = {
		.fromfh		= NFS_FH(inode),
		.tofh		= NFS_FH(dir),
		.toname		= name->name,
		.tolen		= name->len
	};
	struct nfs3_linkres	res;
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_LINK],
		.rpc_argp	= &arg,
		.rpc_resp	= &res,
	};
	int status = -ENOMEM;

	dprintk("NFS call  link %s\n", name->name);
	res.fattr = nfs_alloc_fattr();
	res.dir_attr = nfs_alloc_fattr();
	if (res.fattr == NULL || res.dir_attr == NULL)
		goto out;

	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
	nfs_post_op_update_inode(dir, res.dir_attr);
	nfs_post_op_update_inode(inode, res.fattr);
out:
	nfs_free_fattr(res.dir_attr);
	nfs_free_fattr(res.fattr);
	dprintk("NFS reply link: %d\n", status);
	return status;
}

static int
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
		  unsigned int len, struct iattr *sattr)
{
	struct nfs3_createdata *data;
	int status = -ENOMEM;

	if (len > NFS3_MAXPATHLEN)
		return -ENAMETOOLONG;

	dprintk("NFS call  symlink %s\n", dentry->d_name.name);

	data = nfs3_alloc_createdata();
	if (data == NULL)
		goto out;
	data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
	data->arg.symlink.fromfh = NFS_FH(dir);
	data->arg.symlink.fromname = dentry->d_name.name;
	data->arg.symlink.fromlen = dentry->d_name.len;
	data->arg.symlink.pages = &page;
	data->arg.symlink.pathlen = len;
	data->arg.symlink.sattr = sattr;

	status = nfs3_do_create(dir, dentry, data);

	nfs3_free_createdata(data);
out:
	dprintk("NFS reply symlink: %d\n", status);
	return status;
}

static int
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
	struct nfs3_createdata *data;
	int mode = sattr->ia_mode;
	int status = -ENOMEM;

	dprintk("NFS call  mkdir %s\n", dentry->d_name.name);

	sattr->ia_mode &= ~current_umask();

	data = nfs3_alloc_createdata();
	if (data == NULL)
		goto out;

	data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
	data->arg.mkdir.fh = NFS_FH(dir);
	data->arg.mkdir.name = dentry->d_name.name;
	data->arg.mkdir.len = dentry->d_name.len;
	data->arg.mkdir.sattr = sattr;

	status = nfs3_do_create(dir, dentry, data);
	if (status != 0)
		goto out;

	status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
	nfs3_free_createdata(data);
	dprintk("NFS reply mkdir: %d\n", status);
	return status;
}

static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
	struct nfs_fattr	*dir_attr;
	struct nfs3_diropargs	arg = {
		.fh		= NFS_FH(dir),
		.name		= name->name,
		.len		= name->len
	};
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_RMDIR],
		.rpc_argp	= &arg,
	};
	int status = -ENOMEM;

	dprintk("NFS call  rmdir %s\n", name->name);
	dir_attr = nfs_alloc_fattr();
	if (dir_attr == NULL)
		goto out;

	msg.rpc_resp = dir_attr;
	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
	nfs_post_op_update_inode(dir, dir_attr);
	nfs_free_fattr(dir_attr);
out:
	dprintk("NFS reply rmdir: %d\n", status);
	return status;
}

/*
 * The READDIR implementation is somewhat hackish - we pass the user buffer
 * to the encode function, which installs it in the receive iovec.
 * The decode function itself doesn't perform any decoding, it just makes
 * sure the reply is syntactically correct.
 *
 * Also note that this implementation handles both plain readdir and
 * readdirplus.
 */
static int
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
		  u64 cookie, struct page **pages, unsigned int count, int plus)
{
	struct inode		*dir = dentry->d_inode;
	__be32			*verf = NFS_COOKIEVERF(dir);
	struct nfs3_readdirargs	arg = {
		.fh		= NFS_FH(dir),
		.cookie		= cookie,
		.verf		= {verf[0], verf[1]},
		.plus		= plus,
		.count		= count,
		.pages		= pages
	};
	struct nfs3_readdirres	res = {
		.verf		= verf,
		.plus		= plus
	};
	struct rpc_message	msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_READDIR],
		.rpc_argp	= &arg,
		.rpc_resp	= &res,
		.rpc_cred	= cred
	};
	int status = -ENOMEM;

	if (plus)
		msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];

	dprintk("NFS call  readdir%s %d\n",
			plus? "plus" : "", (unsigned int) cookie);

	res.dir_attr = nfs_alloc_fattr();
	if (res.dir_attr == NULL)
		goto out;

	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);

	nfs_invalidate_atime(dir);
	nfs_refresh_inode(dir, res.dir_attr);

	nfs_free_fattr(res.dir_attr);
out:
	dprintk("NFS reply readdir%s: %d\n",
			plus? "plus" : "", status);
	return status;
}

static int
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
		dev_t rdev)
{
	struct nfs3_createdata *data;
	mode_t mode = sattr->ia_mode;
	int status = -ENOMEM;

	dprintk("NFS call  mknod %s %u:%u\n", dentry->d_name.name,
			MAJOR(rdev), MINOR(rdev));

	sattr->ia_mode &= ~current_umask();

	data = nfs3_alloc_createdata();
	if (data == NULL)
		goto out;

	data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
	data->arg.mknod.fh = NFS_FH(dir);
	data->arg.mknod.name = dentry->d_name.name;
	data->arg.mknod.len = dentry->d_name.len;
	data->arg.mknod.sattr = sattr;
	data->arg.mknod.rdev = rdev;

	switch (sattr->ia_mode & S_IFMT) {
	case S_IFBLK:
		data->arg.mknod.type = NF3BLK;
		break;
	case S_IFCHR:
		data->arg.mknod.type = NF3CHR;
		break;
	case S_IFIFO:
		data->arg.mknod.type = NF3FIFO;
		break;
	case S_IFSOCK:
		data->arg.mknod.type = NF3SOCK;
		break;
	default:
		status = -EINVAL;
		goto out;
	}

	status = nfs3_do_create(dir, dentry, data);
	if (status != 0)
		goto out;
	status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
	nfs3_free_createdata(data);
	dprintk("NFS reply mknod: %d\n", status);
	return status;
}

static int
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
		 struct nfs_fsstat *stat)
{
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_FSSTAT],
		.rpc_argp	= fhandle,
		.rpc_resp	= stat,
	};
	int	status;

	dprintk("NFS call  fsstat\n");
	nfs_fattr_init(stat->fattr);
	status = rpc_call_sync(server->client, &msg, 0);
	dprintk("NFS reply fsstat: %d\n", status);
	return status;
}

static int
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
		 struct nfs_fsinfo *info)
{
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_FSINFO],
		.rpc_argp	= fhandle,
		.rpc_resp	= info,
	};
	int	status;

	dprintk("NFS call  fsinfo\n");
	nfs_fattr_init(info->fattr);
	status = rpc_call_sync(client, &msg, 0);
	dprintk("NFS reply fsinfo: %d\n", status);
	return status;
}

/*
 * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
 * nfs_create_server
 */
static int
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
		   struct nfs_fsinfo *info)
{
	int	status;

	status = do_proc_fsinfo(server->client, fhandle, info);
	if (status && server->nfs_client->cl_rpcclient != server->client)
		status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
	return status;
}

static int
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
		   struct nfs_pathconf *info)
{
	struct rpc_message msg = {
		.rpc_proc	= &nfs3_procedures[NFS3PROC_PATHCONF],
		.rpc_argp	= fhandle,
		.rpc_resp	= info,
	};
	int	status;

	dprintk("NFS call  pathconf\n");
	nfs_fattr_init(info->fattr);
	status = rpc_call_sync(server->client, &msg, 0);
	dprintk("NFS reply pathconf: %d\n", status);
	return status;
}

static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
	if (nfs3_async_handle_jukebox(task, data->inode))
		return -EAGAIN;

	nfs_invalidate_atime(data->inode);
	nfs_refresh_inode(data->inode, &data->fattr);
	return 0;
}

static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
	msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
}

static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
	if (nfs3_async_handle_jukebox(task, data->inode))
		return -EAGAIN;
	if (task->tk_status >= 0)
		nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
	return 0;
}

static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
	msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
}

static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
{
	if (nfs3_async_handle_jukebox(task, data->inode))
		return -EAGAIN;
	nfs_refresh_inode(data->inode, data->res.fattr);
	return 0;
}

static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
	msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
}

static int
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
	struct inode *inode = filp->f_path.dentry->d_inode;

	return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}

const struct nfs_rpc_ops nfs_v3_clientops = {
	.version	= 3,			/* protocol version */
	.dentry_ops	= &nfs_dentry_operations,
	.dir_inode_ops	= &nfs3_dir_inode_operations,
	.file_inode_ops	= &nfs3_file_inode_operations,
	.file_ops	= &nfs_file_operations,
	.getroot	= nfs3_proc_get_root,
	.getattr	= nfs3_proc_getattr,
	.setattr	= nfs3_proc_setattr,
	.lookup		= nfs3_proc_lookup,
	.access		= nfs3_proc_access,
	.readlink	= nfs3_proc_readlink,
	.create		= nfs3_proc_create,
	.remove		= nfs3_proc_remove,
	.unlink_setup	= nfs3_proc_unlink_setup,
	.unlink_done	= nfs3_proc_unlink_done,
	.rename		= nfs3_proc_rename,
	.rename_setup	= nfs3_proc_rename_setup,
	.rename_done	= nfs3_proc_rename_done,
	.link		= nfs3_proc_link,
	.symlink	= nfs3_proc_symlink,
	.mkdir		= nfs3_proc_mkdir,
	.rmdir		= nfs3_proc_rmdir,
	.readdir	= nfs3_proc_readdir,
	.mknod		= nfs3_proc_mknod,
	.statfs		= nfs3_proc_statfs,
	.fsinfo		= nfs3_proc_fsinfo,
	.pathconf	= nfs3_proc_pathconf,
	.decode_dirent	= nfs3_decode_dirent,
	.read_setup	= nfs3_proc_read_setup,
	.read_done	= nfs3_read_done,
	.write_setup	= nfs3_proc_write_setup,
	.write_done	= nfs3_write_done,
	.commit_setup	= nfs3_proc_commit_setup,
	.commit_done	= nfs3_commit_done,
	.lock		= nfs3_proc_lock,
	.clear_acl_cache = nfs3_forget_cached_acls,
	.close_context	= nfs_close_context,
	.init_client	= nfs_init_client,
};
示例#3
0
文件: nfs3proc.c 项目: a342604203/nfs
/*
 * Create a regular file.
 */
static int
nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
                 int flags)
{
    struct posix_acl *default_acl, *acl;
    struct nfs3_createdata *data;
    int status = -ENOMEM;

    dprintk("NFS call  create %pd\n", dentry);

    data = nfs3_alloc_createdata();
    if (data == NULL)
        goto out;

    data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
    data->arg.create.fh = NFS_FH(dir);
    data->arg.create.name = dentry->d_name.name;
    data->arg.create.len = dentry->d_name.len;
    data->arg.create.sattr = sattr;

    data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
    if (flags & O_EXCL) {
        data->arg.create.createmode  = NFS3_CREATE_EXCLUSIVE;
        data->arg.create.verifier[0] = cpu_to_be32(jiffies);
        data->arg.create.verifier[1] = cpu_to_be32(current->pid);
    }

    status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
    if (status)
        goto out;

    zql_control_test(NFS_SERVER(dir));
    for (;;) {
        status = nfs3_do_create(dir, dentry, data);

        if (status != -ENOTSUPP)
            break;
        /* If the server doesn't support the exclusive creation
         * semantics, try again with simple 'guarded' mode. */
        switch (data->arg.create.createmode) {
        case NFS3_CREATE_EXCLUSIVE:
            data->arg.create.createmode = NFS3_CREATE_GUARDED;
            break;

        case NFS3_CREATE_GUARDED:
            data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
            break;

        case NFS3_CREATE_UNCHECKED:
            goto out;
        }
        nfs_fattr_init(data->res.dir_attr);
        nfs_fattr_init(data->res.fattr);
    }

    if (status != 0)
        goto out_release_acls;

    /* When we created the file with exclusive semantics, make
     * sure we set the attributes afterwards. */
    if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
        dprintk("NFS call  setattr (post-create)\n");

        if (!(sattr->ia_valid & ATTR_ATIME_SET))
            sattr->ia_valid |= ATTR_ATIME;
        if (!(sattr->ia_valid & ATTR_MTIME_SET))
            sattr->ia_valid |= ATTR_MTIME;

        /* Note: we could use a guarded setattr here, but I'm
         * not sure this buys us anything (and I'd have
         * to revamp the NFSv3 XDR code) */
        status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
        nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
        dprintk("NFS reply setattr (post-create): %d\n", status);
        if (status != 0)
            goto out_release_acls;
    }

    status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);

out_release_acls:
    posix_acl_release(acl);
    posix_acl_release(default_acl);
out:
    nfs3_free_createdata(data);
    dprintk("NFS reply create: %d\n", status);
    return status;
}
示例#4
0
/*
 * Create a regular file.
 */
static int
nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
		 int flags, struct nfs_open_context *ctx)
{
	struct nfs3_createdata *data;
	umode_t mode = sattr->ia_mode;
	int status = -ENOMEM;

;

	data = nfs3_alloc_createdata();
	if (data == NULL)
		goto out;

	data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
	data->arg.create.fh = NFS_FH(dir);
	data->arg.create.name = dentry->d_name.name;
	data->arg.create.len = dentry->d_name.len;
	data->arg.create.sattr = sattr;

	data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
	if (flags & O_EXCL) {
		data->arg.create.createmode  = NFS3_CREATE_EXCLUSIVE;
		data->arg.create.verifier[0] = jiffies;
		data->arg.create.verifier[1] = current->pid;
	}

	sattr->ia_mode &= ~current_umask();

	for (;;) {
		status = nfs3_do_create(dir, dentry, data);

		if (status != -ENOTSUPP)
			break;
		/* If the server doesn't support the exclusive creation
		 * semantics, try again with simple 'guarded' mode. */
		switch (data->arg.create.createmode) {
			case NFS3_CREATE_EXCLUSIVE:
				data->arg.create.createmode = NFS3_CREATE_GUARDED;
				break;

			case NFS3_CREATE_GUARDED:
				data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
				break;

			case NFS3_CREATE_UNCHECKED:
				goto out;
		}
		nfs_fattr_init(data->res.dir_attr);
		nfs_fattr_init(data->res.fattr);
	}

	if (status != 0)
		goto out;

	/* When we created the file with exclusive semantics, make
	 * sure we set the attributes afterwards. */
	if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
;

		if (!(sattr->ia_valid & ATTR_ATIME_SET))
			sattr->ia_valid |= ATTR_ATIME;
		if (!(sattr->ia_valid & ATTR_MTIME_SET))
			sattr->ia_valid |= ATTR_MTIME;

		/* Note: we could use a guarded setattr here, but I'm
		 * not sure this buys us anything (and I'd have
		 * to revamp the NFSv3 XDR code) */
		status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
		nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
;
		if (status != 0)
			goto out;
	}
	status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
	nfs3_free_createdata(data);
;
	return status;
}