linux

iv/linux

History

Christian Göttsche 8bfbd046a3 selinux: deprecated fs ocon

The object context type `fs`, not to be confused with the well used
object context type `fscon`, was introduced in the initial git commit
1da177e4c3f4 ("Linux-2.6.12-rc2") but never actually used since.

The paper "A Security Policy Configuration for the Security-Enhanced
Linux" [1] mentions it under `7.2 File System Contexts` but also states:

    Currently, this configuration is unused.

The policy statement defining such object contexts is `fscon`, e.g.:

    fscon 2 3 gen_context(system_u:object_r:conA_t,s0) \
        gen_context(system_u:object_r:conB_t,s0)

It is not documented at selinuxproject.org or in the SELinux notebook
and not supported by the Reference Policy buildsystem - the statement is
not properly sorted - and thus not used in the Reference or Fedora
Policy.

Print a warning message at policy load for each such object context:

    SELinux:  void and deprecated fs ocon 02:03

This topic was initially highlighted by Nicolas Iooss [2].

[1]: https://media.defense.gov/2021/Jul/29/2002815735/-1/-1/0/SELINUX-SECURITY-POLICY-CONFIGURATION-REPORT.PDF
[2]: https://lore.kernel.org/selinux/CAJfZ7=mP2eJaq2BfO3y0VnwUJaY2cS2p=HZMN71z1pKjzaT0Eg@mail.gmail.com/

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: tweaked deprecation comment, description line wrapping]
Signed-off-by: Paul Moore <paul@paul-moore.com>

2023-05-23 15:37:56 -04:00

include

selinux: make header files self-including

2023-05-18 14:12:43 -04:00

selinux: deprecated fs ocon

2023-05-23 15:37:56 -04:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

avc.c

selinux: drop return at end of void function avc_insert()

2023-05-08 16:47:32 -04:00