IPC :: Open3仍不成功在阿帕奇 [英] IPC::Open3 Fails Running Under Apache

问题描述

我有一个使用IPC :: Open3（或IPC :: Open2，既表现出这种问题）调用外部二进制（在这种情况下bogofilter），并通过对儿童输入文件句柄给它一些输入的模块，然后读结果从子输出句柄。在大多数环境中运行时，code正常工作。然而，主要使用这种模块是阿帕奇2.2.6下运行的Web服务。而这环境下，我得到的错误：

I have a module that uses IPC::Open3 (or IPC::Open2, both exhibit this problem) to call an external binary (bogofilter in this case) and feed it some input via the child-input filehandle, then reads the result from the child-output handle. The code works fine when run in most environments. However, the main use of this module is in a web service that runs under Apache 2.2.6. And under that environment, I get the error:

无法fdopen STDOUT：无效的参数

Cannot fdopen STDOUT: Invalid argument

这只有当code Apache下运行的情况。 previously中，code构建一个可怕的复杂的命令，其中包括了在此文档的输入，并与后台蜱运行它。这工作，但非常缓慢，容易出现以独特的方式令人费解打破。我不想有恢复到旧版本，但我不能破解这个。

This only happens when the code runs under Apache. Previously, the code constructed a horribly complex command, which included a here-document for the input, and ran it with back-ticks. THAT worked, but was very slow and prone to breaking in unique and perplexing ways. I would hate to have to revert to the old version, but I cannot crack this.

推荐答案

难道是因为mod_perl的2关闭标准输出？我刚刚发现这一点，并发布了关于它：

Could it be because mod_perl 2 closes STDOUT? I just discovered this and posted about it:

http://marc.info/?l=apache-modperl&m=126296015910250&w=2

我认为这是一个讨厌的错误，但似乎没有人去关心它迄今。如果你的问题是相关的，你想它来引起别人的注意张贴在mod_perl的名单上的跟进。

I think it's a nasty bug, but no one seems to care about it thus far. Post a follow up on the mod_perl list if your problem is related and you want it to get attention.

乔恩

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