PHP无法读取/ var/tmp上的文件

Question

我有一个非常奇怪的错误.PHP无法读取存在的文件......有些想法？我没有安装SELinux.我正在使用fedora 17和php 5.4.

我已经尝试过我所知道的一切,但问题仍然存在.

[root@sqd var]# ls -lia 
total 92
  8194 drwxrwxrwx. 23 root   root   4096 ago 17 10:30 .
     2 dr-xr-xr-x. 19 root   root   4096 ago 13 16:00 ..
 32139 drwxr-xr-x.  2 root   root   4096 may 22 13:42 account
   288 drwxr-xr-x.  2 root   root   4096 feb  3  2012 adm
    13 drwxr-xr-x. 14 root   root   4096 ago  8 10:26 cache
796005 drwxr-xr-x   2 root   root   4096 feb  6  2012 cvs
   289 drwxr-xr-x.  3 root   root   4096 ago 21 18:07 db
   290 drwxr-xr-x.  3 root   root   4096 may 22 13:42 empty
263682 drwxr-xr-x.  3 root   root   4096 ago  7 11:15 ftp
   291 drwxr-xr-x.  2 root   root   4096 feb  3  2012 games
 35931 drwxrwx--T.  2 root   gdm    4096 jun  8 16:05 gdm
   292 drwxr-xr-x.  2 root   root   4096 feb  3  2012 gopher
    15 drwxr-xr-x. 45 root   root   4096 ago 10 10:42 lib
   296 drwxr-xr-x.  2 root   root   4096 feb  3  2012 local
   308 lrwxrwxrwx.  1 root   root     11 may 22 13:39 lock -> ../run/lock
    12 drwxr-xr-x. 14 root   root   4096 ago 26 03:17 log
   297 lrwxrwxrwx.  1 root   root     10 may 22 13:39 mail -> spool/mail
   298 drwxr-xr-x.  2 root   root   4096 feb  3  2012 nis
931987 drwxrwxrwx   3 nobody nobody 4096 ago 17 10:32 nodejs
   299 drwxr-xr-x.  2 root   root   4096 feb  3  2012 opt
   300 drwxr-xr-x.  2 root   root   4096 feb  3  2012 preserve
   307 lrwxrwxrwx.  1 root   root      6 may 22 13:39 run -> ../run
   301 drwxr-xr-x. 15 root   root   4096 may 22 13:43 spool
   305 drwxrwxrwx.  5 nobody nobody 4096 ago 30 14:13 tmp
262637 drwxr-xr-x.  7 root   root   4096 ago  7 11:20 www
   306 drwxr-xr-x.  2 root   root   4096 feb  3  2012 yp


[root@sqd var]# ls -lia tmp/
total 216
    305 drwxrwxrwx.  5 nobody nobody   4096 ago 30 14:13 .
   8194 drwxrwxrwx. 23 root   root     4096 ago 17 10:30 ..
   3030 -rwxrwxrwx   1 nobody nobody 199397 ago 30 14:13 file_thumb_5363_1_0.jpg

但

<?php
highlight_file(__FILE__);

var_dump(file_exists('/var/tmp/file_thumb_5363_1_0.jpg')); 

打印:

bool(false) 

Answer 1

Fedora的16推出的"概念私人TMP " /tmp和/var/tmp我会扔我的2美分,这一方向.

从手册:

2.3.3.Services Private/tmp
已修改systemd管理的许多服务,以利用其为其提供private/tmp目录的能力.之前发现使用/ tmp和/ var/tmp的特权服务可能会被非特权用户干扰,从而可能导致特权升级.将private/tmp目录用于服务可以防止这种漏洞利用.

为修改后的服务添加到systemd单元文件的指令是:

[服务]
PrivateTmp = true