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Only invoke RPM on RPM-enabled Linux distributions

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When calling "sepolgen generate" to automatically generate a SELinux
policy template, the command fails when it cannot invoke RPM related
commands on Linux distributions that do not support RPM by default:

Failed to retrieve rpm info for selinux-policy
Traceback (most recent call last):
  File "/usr/lib/python-exec/python2.7/sepolicy", line 643, in <module>
    args.func(args)
  File "/usr/lib/python-exec/python2.7/sepolicy", line 517, in generate
    print mypolicy.generate(args.path)
  File "/usr/lib64/python2.7/site-packages/sepolicy/generate.py", line 1370, in generate
    out += "%s # %s\n" % (self.write_spec(out_dir), _("Spec file"))
  File "/usr/lib64/python2.7/site-packages/sepolicy/generate.py", line 1219, in write_spec
    fd.write(self.generate_spec())
  File "/usr/lib64/python2.7/site-packages/sepolicy/generate.py", line 1181, in generate_spec
    selinux_policyver = get_rpm_nvr_list("selinux-policy")[1]
TypeError: 'NoneType' object has no attribute '__getitem__'

As the RPM related steps are only needed on RPM-enabled distributions,
we should ignore these steps on other Linux distribution platforms.

In this patch, we use the Python platform module to get the Linux
distribution, and only start the RPM-related activities on Linux
distributions that use RPM as their native package manager.

Signed-off-by: Sven Vermeulen <sven.vermeulen@siphos.be>
This commit is contained in:
Sven Vermeulen 2015-06-09 13:26:24 +02:00 committed by Stephen Smalley
parent 2b35dd5e10
commit 73b7ff410c
1 changed files with 5 additions and 2 deletions
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7
policycoreutils/sepolicy/sepolicy/generate.py
View file

@ -26,6 +26,7 @@ import re
import sepolicy
from sepolicy import get_all_types, get_all_attributes, get_all_roles
import time
import platform
from templates import executable
from templates import boolean
@ -1171,7 +1172,8 @@ allow %s_t %s_t:%s_socket name_%s;
newsh += re.sub("TEMPLATETYPE", self.name, t1)
newsh += self.generate_user_sh()
newsh += re.sub("TEMPLATEFILE", self.file_name, script.rpm)
if (platform.linux_distribution(full_distribution_name=0)[0] in ("redhat","centos","SuSE","fedora","mandrake","mandriva")):
newsh += re.sub("TEMPLATEFILE", self.file_name, script.rpm)
return newsh
@ -1367,6 +1369,7 @@ Warning %s does not exist
out += "%s # %s\n" % (self.write_if(out_dir), _("Interface file"))
out += "%s # %s\n" % (self.write_fc(out_dir), _("File Contexts file"))
if self.type != NEWTYPE:
out += "%s # %s\n" % (self.write_spec(out_dir), _("Spec file"))
if (platform.linux_distribution(full_distribution_name=0)[0] in ("redhat","centos","SuSE","fedora","mandrake","mandriva")):
out += "%s # %s\n" % (self.write_spec(out_dir), _("Spec file"))
out += "%s # %s\n" % (self.write_sh(out_dir), _("Setup Script"))
return out