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Add a selabel_cmp() interface for comparing two label configurations, and implement it for the file backend (i.e. for file_contexts). This allows comparing two file_contexts configurations to see if the first is a subset of, equal/identical to, a superset of, or incomparable to the second. The motivating use case is to allow comparing two file_contexts.bin files in Android CTS to confirm that a device file_contexts.bin file contains all of the entries in the AOSP general file_contexts. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Please submit all bug reports and patches to selinux@tycho.nsa.gov. Subscribe via selinux-join@tycho.nsa.gov. Build dependencies on Fedora: yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python-devel setools-devel swig ustr-devel To build and install everything under a private directory, run: make DESTDIR=~/obj install install-pywrap 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.