| commit | 8c1282b0ecc17fe1f2fa67af4e3814b07d993ac8 | [log] [tgz] |
|---|---|---|
| author | Dominick Grift <dac.override@gmail.com> | Wed Dec 11 14:44:23 2019 +0100 |
| committer | Petr Lautrbach <plautrba@redhat.com> | Wed May 13 11:09:03 2020 +0200 |
| tree | 3270ff7eb4ae37028bbfc823cc7fbeee995be8ff | |
| parent | c2c2dc610c995fc4caab6c98c03e13727476136e [diff] |
mcstrans: start early and stop late
It stopped too early, exposing a bug in sudo selinux_restore_tty():
SELINUX_ERR op=setxattr invalid_context="wheel.id:wheel.role:users.terminals.pty.pty_file:SystemLow"
avc: denied { mac_admin } for pid=859 comm="sudo" capability=33 scontext=wheel.id:wheel.role:sudo.wheel.subj:s0 tcontext=wheel.id:wheel.role:sudo.wheel.subj:s0 tclass=capability2 permissive=0
If we want to be able to reference human readable contexts in SELinuxContext= and nspawn -Z and -L then we need mcstrans ASAP
v2: stop late, but do stop
Signed-off-by: Dominick Grift <dac.override@gmail.com>
Acked-by: Petr Lautrbach <plautrba@redhat.com>
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SELinux libraries and tools are packaged in several Linux distributions:
Build dependencies on Fedora:
# For C libraries and programs dnf install \ audit-libs-devel \ bison \ bzip2-devel \ CUnit-devel \ diffutils \ flex \ gcc \ gettext \ glib2-devel \ make \ libcap-devel \ libcap-ng-devel \ pam-devel \ pcre-devel \ xmlto # For Python and Ruby bindings dnf install \ python3-devel \ ruby-devel \ swig
Build dependencies on Debian:
# For C libraries and programs apt-get install --no-install-recommends --no-install-suggests \ bison \ flex \ gawk \ gcc \ gettext \ make \ libaudit-dev \ libbz2-dev \ libcap-dev \ libcap-ng-dev \ libcunit1-dev \ libglib2.0-dev \ libpcre3-dev \ pkgconf \ python3 \ python3-distutils \ systemd \ xmlto # For Python and Ruby bindings apt-get install --no-install-recommends --no-install-suggests \ python3-dev \ ruby-dev \ swig
To build and install everything under a private directory, run:
make clean distclean make DESTDIR=~/obj install install-rubywrap install-pywrap
On Debian PYTHON_SETUP_ARGS=--install-layout=deb needs to be set when installing the python wrappers in order to create the correct python directory structure.
To run tests with the built libraries and programs, several paths (relative to $DESTDIR) need to be added to variables $LD_LIBRARY_PATH, $PATH and $PYTHONPATH. This can be done using ./scripts/env_use_destdir:
DESTDIR=~/obj ./scripts/env_use_destdir make test
Some tests require the reference policy to be installed (for example in python/sepolgen). In order to run these ones, instructions similar to the ones in section install of ./.travis.yml can be executed.
To install as the default system libraries and binaries (overwriting any previously installed ones - dangerous!), on x86_64, run:
make LIBDIR=/usr/lib64 SHLIBDIR=/lib64 install install-pywrap relabel
or on x86 (32-bit), run:
make install install-pywrap relabel
This may render your system unusable if the upstream SELinux userspace lacks library functions or other dependencies relied upon by your distribution. If it breaks, you get to keep both pieces.
To install libsepol on macOS (mainly for policy analysis):
cd libsepol; make PREFIX=/usr/local install
This requires GNU coreutils:
brew install coreutils