由于 cakeshell，CakePHP 2.x 警告 SplFileInfo

Question

我编写了一个 cakeshell 脚本，我计划使用 cronjob 来使用它。在手动运行它（在测试期间）时，有时我的网站会抛出 SplFileInfo 警告，例如：

Warning: SplFileInfo::openFile(/var/www/flat/app/tmp/cache/persistent/myapp_cake_core_file_map): 
failed to open stream: Permission denied in /var/www/flat/lib/Cake/Cache/Engine/FileEngine.php on line 313

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/models/myapp_cake_model_default_flat_list): 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/models/myapp_cake_model_default_flat_list) [http://php.net/splfileinfo.openfile]: 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): _cake_model_ cache was unable to write 'default_flat_list' to File cache [CORE/Cake/Cache/Cache.php, line 309]

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/persistent/myapp_cake_core_method_cache) [http://php.net/splfileinfo.openfile]: 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/persistent/myapp_cake_core_method_cache) [http://php.net/splfileinfo.openfile]: 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/models/myapp_cake_model_default_flat_list) [http://php.net/splfileinfo.openfile]: 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): SplFileInfo::openFile(/var/www/flat/app/tmp/cache/models/myapp_cake_model_default_flat_list) [http://php.net/splfileinfo.openfile]: 
failed to open stream: Permission denied [CORE/Cake/Cache/Engine/FileEngine.php, line 313]

Warning (512): _cake_model_ cache was unable to write 'default_flat_list' to File cache [CORE/Cake/Cache/Cache.php, line 309]

发生了什么？以及如何解决这个问题？

如果我检查缓存上的 tmp 目录并持久化某些文件，则它们处于 root 权限下。是这个原因吗？

[root@Apps103 persistent]# ls
total 40K
-rw-rw-r-- 1 apache   43 Apr 22 17:49 myapp_cake_core_cake_
-rw-rw-r-- 1 root     43 Apr 23 10:01 myapp_cake_core_cake_console_
-rw-rw-r-- 1 root     43 Apr 23 10:01 myapp_cake_core_cake_dev_
-rw-rw-r-- 1 apache   43 Apr 23 10:26 myapp_cake_core_cake_dev_en-us
-rw-rw-r-- 1 apache   43 Apr 23 10:26 myapp_cake_core_cake_en-us
-rw-rw-r-- 1 apache   43 Apr 23 10:26 myapp_cake_core_default_en-us
-rw-rw-r-- 1 root   4.3K Apr 23 10:01 myapp_cake_core_file_map
-rw-rw-r-- 1 root   4.3K Apr 23 10:01 myapp_cake_core_method_cache

我尝试了此链接的解决方案SplFileInfo::openFile(/app/tmp/cache/persistent/cake_core_cake_console_):failed to open stream:Permission returned in /lib/.../FileEngine.php line 293

我把它放在引导程序中

Cache::config('default', array(
    'engine' => 'File',
    'mask' => 0666,
));

// short  
Cache::config('short', array(
    'engine' => 'File',
    'duration' => '+1 hours',
    'path' => CACHE,
    'prefix' => 'cake_short_'
));

// long
Cache::config('long', array(
    'engine' => 'File',
    'duration' => '+1 week',
    'probability' => 100,
    'path' => CACHE . 'long' . DS,
));

但它不起作用。通常我会清理整个 tmp 目录以删除警告。然后它会再次正常工作。我不知道为什么，但如果我运行 shell，警告错误不会显示，直到第二天。我的 tmp 目录 (flat/app/tmp) 具有 apache 权限。

Answer 1

发生了什么？

tmp 文件夹通常位于应用程序目录中，并为所有请求共享，无论来源如何。一个相对常见的问题是通过 Web 请求创建的 tmp 文件对于控制台任务来说是只读的，反之亦然。

如果您以 root 身份运行 cli 任务，tmp 文件将以所有者 root 的身份创建 - 此后，Web 请求（由 apache 运行）可能会尝试删除或写入 tmp 目录，但无法修改现有 tmp 文件夹内容，因为文件归 root 所有。

如何解决这个问题？

要么让 cli 和 web 请求使用不同的tmp 目录，要么简单地确保 cli 和 web 用户都对 tmp 目录具有写入权限。

这意味着要么在 CakePHP 之前将 TMP 常量定义到 app/tmp 以外的位置，例如在cake.php中：

...
$ds = DIRECTORY_SEPARATOR;
define('TMP', '/tmp/myapp');
...

或者确保 tmp 文件夹对两个用户都是可写的，例如：

cd app
chmod -R 777 tmp