diff options
Diffstat (limited to 'security/selinux/ss/mls.c')
| -rw-r--r-- | security/selinux/ss/mls.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c index fbf9c5816c71..40de8d3f208e 100644 --- a/security/selinux/ss/mls.c +++ b/security/selinux/ss/mls.c @@ -517,6 +517,8 @@ int mls_compute_sid(struct context *scontext, { struct range_trans rtr; struct mls_range *r; + struct class_datum *cladatum; + int default_range = 0; if (!policydb.mls_enabled) return 0; @@ -530,6 +532,28 @@ int mls_compute_sid(struct context *scontext, r = hashtab_search(policydb.range_tr, &rtr); if (r) return mls_range_set(newcontext, r); + + if (tclass && tclass <= policydb.p_classes.nprim) { + cladatum = policydb.class_val_to_struct[tclass - 1]; + if (cladatum) + default_range = cladatum->default_range; + } + + switch (default_range) { + case DEFAULT_SOURCE_LOW: + return mls_context_cpy_low(newcontext, scontext); + case DEFAULT_SOURCE_HIGH: + return mls_context_cpy_high(newcontext, scontext); + case DEFAULT_SOURCE_LOW_HIGH: + return mls_context_cpy(newcontext, scontext); + case DEFAULT_TARGET_LOW: + return mls_context_cpy_low(newcontext, tcontext); + case DEFAULT_TARGET_HIGH: + return mls_context_cpy_high(newcontext, tcontext); + case DEFAULT_TARGET_LOW_HIGH: + return mls_context_cpy(newcontext, tcontext); + } + /* Fallthrough */ case AVTAB_CHANGE: if ((tclass == policydb.process_class) || (sock == true)) |