commit: 2de290b85e9d1c50e4e6f076a16fc803dfab4adc
Author: Chris PeBenito <chpebeni <AT> linux <DOT> microsoft <DOT> com>
AuthorDate: Thu Jun 23 19:29:50 2022 +0000
Commit: Jason Zaman <perfinion <AT> gentoo <DOT> org>
CommitDate: Sat Sep 3 18:41:55 2022 +0000
URL:
https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=2de290b8
mcs: Reorganize file.
Add more comments.
Signed-off-by: Chris PeBenito <chpebeni <AT> linux.microsoft.com>
Signed-off-by: Jason Zaman <perfinion <AT> gentoo.org>
policy/mcs | 53 ++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 36 insertions(+), 17 deletions(-)
diff --git a/policy/mcs b/policy/mcs
index c3d76d09..30129dcb 100644
--- a/policy/mcs
+++ b/policy/mcs
@@ -82,10 +82,15 @@ mlsconstrain { file lnk_file fifo_file } { create relabelto
}
((( h1 dom h2 ) and ( l2 eq h2 )) or
( t1 != mcs_constrained_type ));
-
+#
+# MCS policy for process classes
+#
mlsconstrain process { transition dyntransition ptrace sigkill sigstop signal
getsession getattr getsched setsched getrlimit setrlimit getpgid setpgid getcap
setcap share setexec setfscreate setcurrent setsockcreate }
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
+#
+# MCS policy for socket classes
+#
mlsconstrain socket_class_set { create ioctl read write setattr append bind
connect getopt setopt shutdown }
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
@@ -101,9 +106,16 @@ mlsconstrain unix_stream_socket connectto
mlsconstrain unix_dgram_socket sendto
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
+
+#
+# MCS policy for key class
+#
mlsconstrain key { create link read search setattr view write }
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
+#
+# MCS policy for SysV IPC
+#
mlsconstrain { ipc sem msgq shm } { create destroy setattr read unix_read
write unix_write }
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
@@ -116,9 +128,32 @@ mlsconstrain msgq enqueue
mlsconstrain shm lock
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
+#
+# MCS policy for context class
+#
mlsconstrain context contains
((( h1 dom h2 ) and ( l1 domby l2 )) or ( t1 != mcs_constrained_type ));
+#
+# MCS policy for network classes
+#
+
+# The node recvfrom/sendto ops, the recvfrom permission is a "write" operation
+# because the subject in this particular case is the remote domain which is
+# writing data out the network node which is acting as the object
+mlsconstrain { node } { recvfrom sendto }
+ (( l1 dom l2 ) or ( t1 != mcs_constrained_type ));
+
+mlsconstrain { packet peer } { recv }
+ (( l1 dom l2 ) or
+ (( t1 != mcs_constrained_type ) and ( t2 != mcs_constrained_type )));
+
+# The netif ingress/egress ops, the ingress permission is a "write" operation
+# because the subject in this particular case is the remote domain which is
+# writing data out the network interface which is acting as the object
+mlsconstrain { netif } { egress ingress }
+ (( l1 dom l2 ) or ( t1 != mcs_constrained_type ));
+
#
# MCS policy for SELinux-enabled databases
#
@@ -162,20 +197,4 @@ mlsconstrain db_language { drop getattr setattr
relabelfrom execute }
mlsconstrain db_blob { drop getattr setattr relabelfrom read write import
export }
(( h1 dom h2 ) or ( t1 != mcs_constrained_type ));
-# The node recvfrom/sendto ops, the recvfrom permission is a "write" operation
-# because the subject in this particular case is the remote domain which is
-# writing data out the network node which is acting as the object
-mlsconstrain { node } { recvfrom sendto }
- (( l1 dom l2 ) or ( t1 != mcs_constrained_type ));
-
-mlsconstrain { packet peer } { recv }
- (( l1 dom l2 ) or
- (( t1 != mcs_constrained_type ) and ( t2 != mcs_constrained_type )));
-
-# The netif ingress/egress ops, the ingress permission is a "write" operation
-# because the subject in this particular case is the remote domain which is
-# writing data out the network interface which is acting as the object
-mlsconstrain { netif } { egress ingress }
- (( l1 dom l2 ) or ( t1 != mcs_constrained_type ));
-
') dnl end enable_mcs
