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authorJoshua Brindle <joshua.brindle@crunchydata.com>2019-09-04 14:03:23 -0700
committerPaul Moore <paul@paul-moore.com>2019-10-07 19:01:35 -0400
commit42345b68c2e3e2b6549fc34b937ff44240dfc3b6 (patch)
tree8a12d11993f408f24d60ec5615258fe5f0bd94a3 /security/selinux/include/security.h
parent3e3e24b42043eceb97ed834102c2d094dfd7aaa6 (diff)
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selinux: default_range glblub implementation
A policy developer can now specify glblub as a default_range default and the computed transition will be the intersection of the mls range of the two contexts. The glb (greatest lower bound) lub (lowest upper bound) of a range is calculated as the greater of the low sensitivities and the lower of the high sensitivities and the and of each category bitmap. This can be used by MLS solution developers to compute a context that satisfies, for example, the range of a network interface and the range of a user logging in. Some examples are: User Permitted Range | Network Device Label | Computed Label ---------------------|----------------------|---------------- s0-s1:c0.c12 | s0 | s0 s0-s1:c0.c12 | s0-s1:c0.c1023 | s0-s1:c0.c12 s0-s4:c0.c512 | s1-s1:c0.c1023 | s1-s1:c0.c512 s0-s15:c0,c2 | s4-s6:c0.c128 | s4-s6:c0,c2 s0-s4 | s2-s6 | s2-s4 s0-s4 | s5-s8 | INVALID s5-s8 | s0-s4 | INVALID Signed-off-by: Joshua Brindle <joshua.brindle@crunchydata.com> [PM: subject lines and checkpatch.pl fixes] Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/selinux/include/security.h')
-rw-r--r--security/selinux/include/security.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 111121281c47..ae840634e3c7 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -40,10 +40,11 @@
#define POLICYDB_VERSION_CONSTRAINT_NAMES 29
#define POLICYDB_VERSION_XPERMS_IOCTL 30
#define POLICYDB_VERSION_INFINIBAND 31
+#define POLICYDB_VERSION_GLBLUB 32
/* Range of policy versions we understand*/
#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
-#define POLICYDB_VERSION_MAX POLICYDB_VERSION_INFINIBAND
+#define POLICYDB_VERSION_MAX POLICYDB_VERSION_GLBLUB
/* Mask for just the mount related flags */
#define SE_MNTMASK 0x0f