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HomeBackend DevelopmentPHP Tutorial急100积分!!命名管道的问题

命名管道,读写分别为reader.php和writer.php(代码见下文)。
现在我需要通过浏览器来执行writer.php来向管道写数据,在shell里执行reader.php来读数据。
问题是提示写成功,但读取不到数据。
php文档有提示说在安全模式下会检查双方的UID,但设置为一致(都是48)也不行,(文档显示安全模式在php 5.4.0已经移除了)。如果读写都通过浏览器或者shell是可以读写成功。
请问这是怎么回事?该如何解决?谢谢!

操作系统:CentOS 7.0 64位
php:5.6.0

reader.php

<?php$pipe = "/tmp/xpipe";$mode = 0600;//posix_setuid(8899);posix_setuid(48);if(!file_exists($pipe)) {   echo "create pipe.\n";   umask(0);   posix_mkfifo($pipe,$mode);}//posix_setuid(48);echo "posix uid: ".posix_getuid()."\n";echo "my uid: ".getmyuid()."\n";$f = fopen($pipe,"r");while(true){    $ret = stream_get_line($f, 1024, "\n");    if($ret != false){        echo $ret."\n";    }else{        usleep(100000);    }}?>


writer.php
<?php$pipe = "/tmp/xpipe";$mode = 0600;//posix_setuid(8899);posix_setuid(48);if(!file_exists($pipe)) {   umask(0);   posix_mkfifo($pipe,$mode);}$f = fopen($pipe,"w");$msg = "some message [".Date("Y-m-d h:i:s")."]<br>\n";$ret = fwrite($f,$msg);echo "write pipe: ".$ret."<br>\n";fclose($f);//posix_setuid(48);echo "user: ".get_current_user()."<br>\n";echo "posix uid: ".posix_getuid()."<br>\n";echo "my uid: ".getmyuid()."<br>\n";echo $msg;?>


回复讨论(解决方案)

$mode = 0600; ?应该是不对的
至少应为 0644

我用相同的用户分别执行reader.php和writer.php

执行结果是成功的

$mode = 0600; ?应该是不对的
至少应为 0644



zuning老师一直都在论坛很活跃, 怎么又这么多时间啊, 你是做什么工作的?

web 方式的 php 和 shell 中的 php,怎么会是一个用户呢?

退休了,赋闲在家

$mode = 0600; ?应该是不对的
至少应为 0644


0666也试过,都不行。
用get_current_user和posix_getuid获取用户和uid都一样啊,奇了怪了

我用相同的用户分别执行reader.php和writer.php

执行结果是成功的



执行场景跟我一样?

晕~~~

环境1:
操作系统:CentOS  7.0
PHP: 5.6.0
Apache: 2.4.6

环境2:
操作系统:Ubuntu 13.10
PHP: 5.5.3
Apache: 2.4.6

"环境1"读写失败,"环境2"读写成功!!!!!!
谁能帮我解决下吗?我的实际运行环境是"环境1".

晕~~~

环境1:
操作系统:CentOS  7.0
PHP: 5.6.0
Apache: 2.4.6

环境2:
操作系统:Ubuntu 13.10
PHP: 5.5.3
Apache: 2.4.6

"环境1"读写失败,"环境2"读写成功!!!!!!
谁能帮我解决下吗?我的实际运行环境是"环境1".


查看一下/var/log/security,RH系列一般是SELinux权限没有解决


晕~~~

环境1:
操作系统:CentOS  7.0
PHP: 5.6.0
Apache: 2.4.6

环境2:
操作系统:Ubuntu 13.10
PHP: 5.5.3
Apache: 2.4.6

"环境1"读写失败,"环境2"读写成功!!!!!!
谁能帮我解决下吗?我的实际运行环境是"环境1".


查看一下/var/log/security,RH系列一般是SELinux权限没有解决

SELinux没启用,一直是关闭的。这玩意儿对php影响挺大,之前一个什么问题害得我查了半天,后来就干脆彻底关闭了。

开启display_errors,同时查看一下系统/PHP/Apache/安全类日志,失败总会留下日志的,这种无名的错误日志是最好的突破点

??是?限的??,另外你要考?一下???案的所?用?是否和apache的所?用?相同,只要?限足??且?於同一?用?就??是???的
若?是找不出???的?,你就改一下error的??等?,捕捉???容看看

??是?限的??,另外你要考?一下???案的所?用?是否和apache的所?用?相同,只要?限足??且?於同一?用?就??是???的
若?是找不出???的?,你就改一下error的??等?,捕捉???容看看


权限在代码里已经设置了啊,日志全打开了,也没见任何提示。怀疑是CentOS的问题,但又不知道在哪。

操作系统的原因,在centos7下必须都通过web方式,你可以在shell下用curl发起一个web请求来启用管道的另一端

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