安装Python加密错误

时间：2014-09-29 10:09:55

标签： python cryptography pip

运行pip install cryptography时，我得到以下结果

pip install cryptography
Downloading/unpacking cryptography
Running setup.py egg_info for package cryptography
Traceback (most recent call last):
  File "<string>", line 16, in <module>
  File "/tmp/pip-build-root/cryptography/setup.py", line 174, in <module>
    "test": PyTest,
  File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command
    cmd_obj.run()
  File "<string>", line 14, in replacement_run
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 254, in find_sources
    mm.run()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 308, in run
    self.add_defaults()
  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 332, in add_defaults
    sdist.add_defaults(self)
  File "/usr/lib/python2.6/site-packages/setuptools/command/sdist.py", line 187, in add_defaults
    build_py = self.get_finalized_command('build_py')
  File "/usr/lib64/python2.6/distutils/cmd.py", line 319, in get_finalized_command
    cmd_obj.ensure_finalized()
  File "/usr/lib64/python2.6/distutils/cmd.py", line 117, in ensure_finalized
    self.finalize_options()
  File "/usr/lib/python2.6/site-packages/setuptools/command/build_py.py", line 61, in finalize_options
    _build_py.finalize_options(self)
  File "/usr/lib64/python2.6/distutils/command/build_py.py", line 50, in finalize_options
    ('force', 'force'))
  File "/usr/lib64/python2.6/distutils/cmd.py", line 305, in set_undefined_options
    src_cmd_obj.ensure_finalized()
  File "/usr/lib64/python2.6/distutils/cmd.py", line 117, in ensure_finalized
    self.finalize_options()
  File "/tmp/pip-build-root/cryptography/setup.py", line 88, in finalize_options
    self.distribution.ext_modules = get_ext_modules()
  File "/tmp/pip-build-root/cryptography/setup.py", line 65, in get_ext_modules
    from cryptography.hazmat.primitives import constant_time, padding
  File "cryptography/hazmat/primitives/constant_time.py", line 49, in <module>
    _ffi = cffi.FFI()
  File "/tmp/pip-build-root/cryptography/cffi-0.8.6-py2.6-linux-x86_64.egg/cffi/api.py", line 56, in __init__
    import _cffi_backend as backend
ImportError: /tmp/pip-build-root/cryptography/cffi-0.8.6-py2.6-linux-x86_64.egg/_cffi_backend.so: failed to map segment from shared object: Operation not permitted
Complete output from command python setup.py egg_info:
running egg_info

writing requirements to pip-egg-info/cryptography.egg-info/requires.txt

writing pip-egg-info/cryptography.egg-info/PKG-INFO

writing top-level names to pip-egg-info/cryptography.egg-info/top_level.txt

writing dependency_links to pip-egg-info/cryptography.egg-info/dependency_links.txt

warning: manifest_maker: standard file '-c' not found

Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/tmp/pip-build-root/cryptography/setup.py", line 174, in <module>

    "test": PyTest,

  File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup

    dist.run_commands()

  File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands

    self.run_command(cmd)

  File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command

    cmd_obj.run()

  File "<string>", line 14, in replacement_run

  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 254, in find_sources

    mm.run()

  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 308, in run

    self.add_defaults()

  File "/usr/lib/python2.6/site-packages/setuptools/command/egg_info.py", line 332, in add_defaults

    sdist.add_defaults(self)

  File "/usr/lib/python2.6/site-packages/setuptools/command/sdist.py", line 187, in add_defaults

    build_py = self.get_finalized_command('build_py')

  File "/usr/lib64/python2.6/distutils/cmd.py", line 319, in get_finalized_command

    cmd_obj.ensure_finalized()

  File "/usr/lib64/python2.6/distutils/cmd.py", line 117, in ensure_finalized

    self.finalize_options()

  File "/usr/lib/python2.6/site-packages/setuptools/command/build_py.py", line 61, in finalize_options

    _build_py.finalize_options(self)

  File "/usr/lib64/python2.6/distutils/command/build_py.py", line 50, in finalize_options

    ('force', 'force'))

  File "/usr/lib64/python2.6/distutils/cmd.py", line 305, in set_undefined_options

    src_cmd_obj.ensure_finalized()

  File "/usr/lib64/python2.6/distutils/cmd.py", line 117, in ensure_finalized

    self.finalize_options()

  File "/tmp/pip-build-root/cryptography/setup.py", line 88, in finalize_options

    self.distribution.ext_modules = get_ext_modules()

  File "/tmp/pip-build-root/cryptography/setup.py", line 65, in get_ext_modules

    from cryptography.hazmat.primitives import constant_time, padding

  File "cryptography/hazmat/primitives/constant_time.py", line 49, in <module>

     _ffi = cffi.FFI()

  File "/tmp/pip-build-root/cryptography/cffi-0.8.6-py2.6-linux-x86_64.egg/cffi/api.py", line 56, in  __init__

    import _cffi_backend as backend

ImportError: /tmp/pip-build-root/cryptography/cffi-0.8.6-py2.6-linux-x86_64.egg/_cffi_backend.so: failed to map segment from shared object: Operation not permitted

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-root/cryptography
Storing complete log in /root/.pip/pip.log

我猜他们错过了一些我错过的依赖项？

当我运行sudo yum install gcc libffi-devel python-devel openssl-devel来安装所需的依赖项时，我得到以下结果

sudo yum install gcc libffi-devel python-devel openssl-devel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.econdc.com
 * epel: mirrors.coreix.net
 * extras: centos.hyve.com
 * updates: mirror.sov.uk.goscomb.net
Setting up Install Process
Package gcc-4.4.7-4.el6.x86_64 already installed and latest version
Package libffi-devel-3.0.5-3.2.el6.x86_64 already installed and latest version
Package python-devel-2.6.6-52.el6.x86_64 already installed and latest version
Package openssl-devel-1.0.1e-16.el6_5.15.x86_64 already installed and latest version
Nothing to do

有没有人对我缺少的东西有任何建议？

4 个答案:

答案 0 :(得分：8)

Chroot和重新安装/tmp是不必要的，因为您使用pip提供此选项（pip help install）：

-b, --build <dir>    Directory to unpack packages into and build in.

只需将其设置为没有noexec的目录。

答案 1 :(得分：1)

我遇到了同样的问题，而且服务器的 / tmp安装了noexec。这导致了各种各样的问题。解决它的一种方法是创建一个＆＃34; chroot＆＃34;包含＆＃34; / tmp＆＃34;的环境允许文件执行的目录：

关注this article，了解如何规避此事。

  1. 创建＆＃34; chroot＆＃34;包含＆＃34; / tmp＆＃34;的环境允许文件执行的目录：

    mkdir -p / root / chroot / root / tmp
    mount --bind // root / chroot
    mount --bind / root / tmp / root / chroot / tmp
    chroot / root / chroot

  2. ＆＃34;的chroot＆＃34;进入你创造的环境：

    chroot / root / chroot

  3. 此时，你正处于＆＃34; chroot＆＃34;环境，可以运行您需要的任何命令。

    运行安装

  4. 完成后，键入以下命令：

    出口

    umount -l / root / chroot

答案 2 :(得分：1)

在某些系统上，这应该有效：

TMPDIR=~/tmp pip install cryptography

答案 3 :(得分：0)

此外，您可以在没有noexec标志的情况下挂载该卷，方法是从/ etc / fstab中删除它或执行mount -o remount exec /tmp

fstab解决方案不那么安全，它可以被视为安全漏洞，因为任何人都可以将脚本放在/ tmp上并执行它们。

更多信息here。

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