linux如何给文件或目录添加apache权限

2016-11-30 00:00:00嘉辉 Linux认证

  在LAMP环境中,测试一个简单的php文件上传功能时,发现/var/log/apache2/error.log中出现如下php警告:

  [Tue Jan 31 09:40:27 2012] [error] [client 127.0.0.1] PHP Warning: move_uploaded_file(/home/leotody/32883679.jpeg): failed to open stream: Permission denied in /var/www/upload_file.php on line 25, referer: http://localhost/info.html

  [Tue Jan 31 09:40:27 2012] [error] [client 127.0.0.1] PHP Warning: move_uploaded_file(): Unable to move '/tmp/phps05ssU' to '/home/leotody/32883679.jpeg'in /var/www/upload_file.php on line 25, referer: http://localhost/info.html

  提示没有访问权限,文件上传的代码如下:

  if (file_exists("upload/" . $_FILES["file"]["name"]))

  {

  echo $_FILES["file"]["name"] . " already exists. ";

  }

  else

  {

  if(move_uploaded_file($_FILES["file"]["tmp_name"], "upload/".$_FILES["file"]["name"]))

  {

  echo "Stored in: " . "upload/" . $_FILES["file"]["name"];

  }

  else

  {

  echo "move error!";

  }

  }

  页面中显示"move error!",说明move_uploaded_file()函数执行失败。

  通过查找资料,发现网上有说是selinux启动的原因,检查系统并未启动selinux,查看upload目录默认权限ls -ld upload,结果为755:

  drwxr-xr-x 2 root root 4096 2012-01-31 10:59 upload

  将upload目录权限改为777,sudo chmod 777 upload,再测试上传功能成功。但这种修改权限的方法并不安全。

  故可以改upload目录的拥有者为www-data(即apache),sudo chown -R www-data:www-data upload,然后再测试上传功能成功。

  drwxr-xr-x 2 www-data www-data 4096 2012-01-31 10:59 upload

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