コード例 #1
0
ファイル: ufs.go プロジェクト: hugelgupf/ninep
func (*Ufs) Create(req *srv.Req) {
	fid := req.Fid.Aux.(*Fid)
	tc := req.Tc
	err := fid.stat()
	if err != nil {
		req.RespondError(err)
		return
	}

	path := fid.path + "/" + tc.Name
	var e error = nil
	var file *os.File = nil
	switch {
	case tc.Perm&ninep.DMDIR != 0:
		e = os.Mkdir(path, os.FileMode(tc.Perm&0777))

	case tc.Perm&ninep.DMSYMLINK != 0:
		e = os.Symlink(tc.Ext, path)

	case tc.Perm&ninep.DMLINK != 0:
		n, e := strconv.ParseUint(tc.Ext, 10, 0)
		if e != nil {
			break
		}

		ofid := req.Conn.FidGet(uint32(n))
		if ofid == nil {
			req.RespondError(srv.Eunknownfid)
			return
		}

		e = os.Link(ofid.Aux.(*Fid).path, path)
		ofid.DecRef()

	case tc.Perm&ninep.DMNAMEDPIPE != 0:
	case tc.Perm&ninep.DMDEVICE != 0:
		req.RespondError(&ninep.Error{"not implemented", ninep.EIO})
		return

	default:
		var mode uint32 = tc.Perm & 0777
		if req.Conn.Dotu {
			if tc.Perm&ninep.DMSETUID > 0 {
				mode |= syscall.S_ISUID
			}
			if tc.Perm&ninep.DMSETGID > 0 {
				mode |= syscall.S_ISGID
			}
		}
		file, e = os.OpenFile(path, omode2uflags(tc.Mode)|os.O_CREATE, os.FileMode(mode))
	}

	if file == nil && e == nil {
		file, e = os.OpenFile(path, omode2uflags(tc.Mode), 0)
	}

	if e != nil {
		req.RespondError(toError(e))
		return
	}

	fid.path = path
	fid.file = file
	err = fid.stat()
	if err != nil {
		req.RespondError(err)
		return
	}

	req.RespondRcreate(dir2Qid(fid.st), 0)
}