41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
"""
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Copyright 2017 Oliver Smith
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This file is part of pmbootstrap.
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pmbootstrap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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pmbootstrap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
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"""
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import os
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import pmb.helpers.run
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def check_grsec(args):
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"""
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Check if the current kernel is based on the grsec patchset, and if
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the chroot_deny_chmod option is enabled. Raise an exception in that
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case, with a link to a wiki page. Otherwise, do nothing.
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"""
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path = "/proc/sys/kernel/grsecurity/chroot_deny_chmod"
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if not os.path.exists(path):
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return
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status = pmb.helpers.run.root(
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args, ["cat", path], return_stdout=True).rstrip()
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if status != "0":
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link = "https://github.com/postmarketOS/pmbootstrap/wiki/Troubleshooting:grsec"
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raise RuntimeError("You're running a kernel based on the grsec"
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" patchset. To get pmbootstrap working, you"
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" will need to disable some options with"
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" sysctl: <" + link + ">")
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