Eamon Walsh wrote:
This patch removes the requirement that the new and related object
types differ in order to polyinstantiate by MLS level. This allows
MLS polyinstantiation to occur in the absence of explicit type_member
rules or when the type has not changed.
Potential users of this support include pam_namespace.so (directory
polyinstantiation) and the SELinux X support (property
polyinstantiation).
Signed-off-by: Eamon Walsh <ewalsh@xxxxxxxxxxxxx>
---
mls.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index fb5d70a..3bbcb53 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -537,15 +537,8 @@ int mls_compute_sid(struct context *scontext,
/* Use the process effective MLS attributes. */
return mls_context_cpy_low(newcontext, scontext);
case AVTAB_MEMBER:
- /* Only polyinstantiate the MLS attributes if
- the type is being polyinstantiated */
- if (newcontext->type != tcontext->type) {
- /* Use the process effective MLS attributes. */
- return mls_context_cpy_low(newcontext, scontext);
- } else {
- /* Use the related object MLS attributes. */
- return mls_context_cpy(newcontext, tcontext);
- }
+ /* Use the process effective MLS attributes. */
+ return mls_context_cpy_low(newcontext, scontext);
default:
return -EINVAL;
}
Should there be a patch to update mls.c in libsepol as well? I hope we
are keeping the kss and uss in sync.
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