98 lines
2.0 KiB
Go
98 lines
2.0 KiB
Go
// Copyright 2009 The Go9p Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package go9p
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import (
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"strings"
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)
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// Opens the file associated with the fid. Returns nil if
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// the operation is successful.
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func (clnt *Clnt) Open(fid *Fid, mode uint8) error {
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tc := clnt.NewFcall()
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err := PackTopen(tc, fid.Fid, mode)
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if err != nil {
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return err
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}
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rc, err := clnt.Rpc(tc)
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if err != nil {
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return err
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}
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fid.Qid = rc.Qid
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fid.Iounit = rc.Iounit
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if fid.Iounit == 0 || fid.Iounit > clnt.Msize-IOHDRSZ {
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fid.Iounit = clnt.Msize - IOHDRSZ
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}
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fid.Mode = mode
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return nil
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}
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// Creates a file in the directory associated with the fid. Returns nil
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// if the operation is successful.
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func (clnt *Clnt) Create(fid *Fid, name string, perm uint32, mode uint8, ext string) error {
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tc := clnt.NewFcall()
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err := PackTcreate(tc, fid.Fid, name, perm, mode, ext, clnt.Dotu)
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if err != nil {
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return err
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}
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rc, err := clnt.Rpc(tc)
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if err != nil {
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return err
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}
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fid.Qid = rc.Qid
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fid.Iounit = rc.Iounit
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if fid.Iounit == 0 || fid.Iounit > clnt.Msize-IOHDRSZ {
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fid.Iounit = clnt.Msize - IOHDRSZ
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}
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fid.Mode = mode
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return nil
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}
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// Creates and opens a named file.
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// Returns the file if the operation is successful, or an Error.
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func (clnt *Clnt) FCreate(path string, perm uint32, mode uint8) (*File, error) {
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n := strings.LastIndex(path, "/")
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if n < 0 {
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n = 0
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}
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fid, err := clnt.FWalk(path[0:n])
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if err != nil {
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return nil, err
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}
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if path[n] == '/' {
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n++
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}
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err = clnt.Create(fid, path[n:], perm, mode, "")
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if err != nil {
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clnt.Clunk(fid)
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return nil, err
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}
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return &File{fid, 0}, nil
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}
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// Opens a named file. Returns the opened file, or an Error.
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func (clnt *Clnt) FOpen(path string, mode uint8) (*File, error) {
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fid, err := clnt.FWalk(path)
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if err != nil {
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return nil, err
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}
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err = clnt.Open(fid, mode)
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if err != nil {
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clnt.Clunk(fid)
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return nil, err
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}
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return &File{fid, 0}, nil
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}
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