Shinsuke Sugaya <******@****.***> 1576358545 +0900

		// don't spend all our time copying.
		copy(b.buf, b.buf[b.off:])
	} else if c > maxInt-c-n {
		panic(ErrTooLarge)
	} else {
		// Add b.off to account for b.buf[:b.off] being sliced off the front.
		b.buf = growSlice(b.buf[b.off:], b.off+n)
	}
	// Restore b.off and len(b.buf).
	b.off = 0
	b.buf = b.buf[:m+n]
	return m
}

                    len -= cnt;
                    off += cnt;
                } else {
                    if (log.isTraceEnabled()) {
                        log.trace(String.format("Wrote at %d remain %d off %d len %d", this.fp, len - w, off, w));
                    }
                    this.req.setParam(fh.getFid(), this.fp, len - w, b, off, w);
                    th.send(this.req, this.rsp);

        this.b = b;
        this.off = off;
    }

    /**
     * Sets the parameters for this write request.
     *
     * @param fid the file identifier
     * @param offset the file offset at which to write
     * @param remaining the number of bytes remaining to be written
     * @param b the data buffer containing bytes to write
     * @param off the offset in the buffer where data starts

        this.b = b;
        this.off = off;
        dataLength = len;
        command = SMB_COM_WRITE_ANDX;
    }

    void setParam(final int fid, final long offset, final int remaining, final byte[] b, final int off, final int len) {
        this.fid = fid;
        this.offset = offset;
        this.remaining = remaining;
        this.b = b;
        this.off = off;
        dataLength = len;

        assertEquals(remaining, getFieldValue(write, "remaining"), "Remaining should match constructor arg");
        assertEquals(buffer, getFieldValue(write, "b"), "Buffer reference should be set");
        assertEquals(off, getFieldValue(write, "off"), "Off should match constructor arg");
        assertEquals(len, getFieldValue(write, "count"), "Count should equal len");
    }

    /**
     * Test setParam method updates the write parameters
     */

    public void writeDirect(final byte[] b, int off, int len, final int flags) throws IOException {
        if (len <= 0) {
            return;
        }

        if (tmp == null) {
            throw new IOException("Bad file descriptor");
        }
        ensureOpen();

        if (LogStream.level >= 4) {
            SmbFile.log.println("write: fid=" + file.fid + ",off=" + off + ",len=" + len);
        }

            e.type = SMBUtil.readInt2(buffer, bufferIndex);
            bufferIndex += 2;
            int off = SMBUtil.readInt4(buffer, bufferIndex);
            bufferIndex += 4;
            off = (off & 0xFFFF) - this.converter;
            off = start + off;
            e.remark = readString(buffer, off, 128, false);

            if (log.isTraceEnabled()) {
                log.trace(e.toString());
            }

            e.type = readInt4(buffer, bufferIndex);
            bufferIndex += 4;
            int off = readInt4(buffer, bufferIndex);
            bufferIndex += 4;
            off = (off & 0xFFFF) - converter;
            off = start + off;
            e.commentOrMasterBrowser = readString(buffer, off, 48, false);

            if (LogStream.level >= 4) {
                log.println(e);
            }
        }

    @Override
    public synchronized void write(final byte[] b, int off, final int len) throws IOException {
        if (len > 0xFFFF) {
            throw new IOException("write too large: " + len);
        }
        if (off < 4) {
            throw new IOException("NetBIOS socket output buffer requires 4 bytes available before off");
        }

        off -= 4;

        b[off + 0] = (byte) SessionServicePacket.SESSION_MESSAGE;