# eio_mknod

(PECL eio >= 0.0.1dev)

eio_mknod — Create a special or ordinary file

### 说明

eio_mknod ( string `$path` , int `$mode` , int `$dev` [, int `$pri` = EIO_PRI_DEFAULT [, callable `$callback` = NULL [, mixed `$data` = NULL ]]] ) : resource

eio_mknod() creates ordinary or special(often) file.

Warning

本函数还未编写文档，仅有参数列表。

### 参数

`path`

  Path for the new node(file).

`mode`

  Specifies both the permissions to use and the type of node to be created. It should be a combination (using bitwise OR) of one of the file types listed below and the permissions for the new node(e.g. 0640). Possible file types are: `EIO_S_IFREG`(regular file), `EIO_S_IFCHR`(character file), `EIO_S_IFBLK`(block special file), `EIO_S_IFIFO`(FIFO - named pipe) and `EIO_S_IFSOCK`(UNIX domain socket). To specify permissions EIO_S_I* constants could be used.

`dev`

  If the file type is `EIO_S_IFCHR` or `EIO_S_IFBLK` then dev specifies the major and minor numbers of the newly created device special file. Otherwise `dev` ignored. See mknod(2) man page for details.

`pri`

  请求的优先级：`EIO_PRI_DEFAULT`，`EIO_PRI_MIN`，`EIO_PRI_MAX` 或 `NULL`。如果是 `NULL`，`pri` 将设为 `EIO_PRI_DEFAULT`。

`callback`

  `callback` 函数在请求完成时被调用。其应匹配一下原型：

      void callback(mixed $data, int $result[, resource $req]);

  `data`

    传递给请求的用户数据。

  `result`

    针对请求的结果的值。通常是相应的系统调用返回的值。

  `req`

    可选的请求资源，可被 eio_get_last_error() 之类的函数使用。

`data`

  Arbitrary variable passed to `callback`.

### 返回值

eio_mknod() returns request resource on success or `FALSE` on error.

### 范例

Example #1 eio_mknod() example

    <?php
    // FIFO name
    $temp_filename = "/tmp/eio-temp-fifo";

    /* Is called when eio_mknod() finishes */
    function my_mknod_callback($data, $result) {
        $s = stat($data);
        var_dump($s);

        if ($result == 0) {
            echo "eio_mknod_ok";
        }

        @unlink($data);
    }

    eio_mknod($temp_filename, EIO_S_IFIFO, 0,
        EIO_PRI_DEFAULT, "my_mknod_callback", $temp_filename);
    eio_event_loop();
    ?>

以上例程的输出类似于：

    array(26) {
      [0]=>
      int(17)
      [1]=>
      int(2337608)
      [2]=>
      int(4096)
      [3]=>
      int(1)
      [4]=>
      int(1000)
      [5]=>
      int(100)
      [6]=>
      int(0)
      [7]=>
      int(0)
      [8]=>
      int(1318241261)
      [9]=>
      int(1318241261)
      [10]=>
      int(1318241261)
      [11]=>
      int(4096)
      [12]=>
      int(0)
      ["dev"]=>
      int(17)
      ["ino"]=>
      int(2337608)
      ["mode"]=>
      int(4096)
      ["nlink"]=>
      int(1)
      ["uid"]=>
      int(1000)
      ["gid"]=>
      int(100)
      ["rdev"]=>
      int(0)
      ["size"]=>
      int(0)
      ["atime"]=>
      int(1318241261)
      ["mtime"]=>
      int(1318241261)
      ["ctime"]=>
      int(1318241261)
      ["blksize"]=>
      int(4096)
      ["blocks"]=>
      int(0)
    }
    eio_mknod_ok

### 参见

- eio_open