virtualenv python 可执行文件的奇怪权限问题(lubuntu-12.10) [英] strange permissions problems for virtualenv python executable (lubuntu-12.10)

问题描述

简而言之，我的问题是，当我尝试使用来自 virtualenvwrapper 的 mkvirtualenv 创建 virtualenv 时，出现以下错误:

In brief, my problem is that when I try to create a virtualenv using mkvirtualenv from virtualenvwrapper, I get the following error:

$ mkvirtualenv test
New python executable in test/bin/python
ERROR: The executable test/bin/python could not be run: [Errno 13] Permission denied

但是，当我查看二进制文件的权限时，据我所知，一切都应该没问题...

However, when I look at the permissions for the binary, as far as I can tell, everything should be fine...

$ ll ~/.virtualenvs/test/bin
total 2604
drwxr-xr-x 1 (username) staff       5 Feb  7 19:10 ./
drwxr-xr-x 1 (username) staff       5 Feb  7 18:51 ../
-rwxr-xr-x 1 (username) staff 2655776 Feb  7 19:10 python*
lrwxrwxrwx 1 (username) staff       6 Feb  7 19:10 python2 -> python*
lrwxrwxrwx 1 (username) staff       6 Feb  7 19:10 python2.7 -> python*

当我尝试以 root 身份运行时遇到类似的错误:

I get similar errors when I try to run as root:

$ sudo .virtualenvs/test/bin/python
sudo: unable to execute .virtualenvs/test/bin/python: Permission denied

我在我的 macbook 上运行 Lubuntu 12.10 和 Mountain Lion，并设置了一个分区用作两个安装之间的共享主目录，大致遵循此处的说明(http://mikeclaffey.com/dual-boot-osx-ubuntu/).据我所知，这一切都在 ubuntu 和山狮中正常工作，但我提到它只是因为这意味着我的 lubuntu 安装不是严格标准的.

I'm running Lubuntu 12.10 on my macbook, alongside Mountain Lion, and have set up a partition to use as a shared home directory between the two installs, roughly following the instructions here (http://mikeclaffey.com/dual-boot-osx-ubuntu/). As far as I can tell, this is all working correctly, both in ubuntu and mountain lion, but I mention it just because it means my lubuntu installation isn't strictly standard.

我已经使用 apt-get 安装了 python-setuptools 和 python-dev，然后使用 sudo easy_install pip 来获取 pip-1.2.1，然后是 sudo pip install virtualenv virtualenvwrapper，获取 virtualenv-1.8.4 和 virtualenvwrapper-3.6.

I've installed python-setuptools and python-dev using apt-get, then used sudo easy_install pip to get pip-1.2.1, followed by sudo pip install virtualenv virtualenvwrapper, to get virtualenv-1.8.4 and virtualenvwrapper-3.6.

更多细节:我在我的主目录中创建了 .virtualenvs，并添加了:

Further particulars: I've created .virtualenvs in my home directory, and added:

export WORKON_HOME=$HOME/.virtualenvs
source /usr/local/bin/virtualenvwrapper.sh
export PIP_VIRTUALENV_BASE=$WORKON_HOME

到我的.bashrc.

此外，我尝试使用 sudo apt-get install python-pip 而不是 easy_install(这将安装 pip-1.1，而不是 pip-1.2.1)，但得到相同的权限错误.

Also, I have tried using sudo apt-get install python-pip instead of easy_install (this installs pip-1.1, rather than pip-1.2.1), but get the same permission errors.

非常感谢任何帮助！

推荐答案

事实证明问题与我如何挂载共享分区有关.我已经安装了(在/etc/fstab 中):

It turns out the problem was to do with how I'd mounted my shared partition. I'd mounted with (in /etc/fstab):

UUID=....  /home   hfsplus   auto,user,nodev,rw    0    0

然而，'user' 选项自动包含'noexec' --- 因此，在virtualenv 将系统python 二进制文件复制到我的主分区后，由于'noexec' 标志，它无法运行.

However, the 'user' option automatically includes 'noexec' --- thus, after virtualenv had copied the system python binary to my home partition, it was unable to run because of the 'noexec' flag.

将我的 fstab 更改为读取:

Changing my fstab to read:

UUID=....  /home   hfsplus    auto,user,exec,nodev,rw   0   0

解决了问题.

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