D40641.id127924.diff
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D40641.id127924.diff
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	diff --git a/sys/kern/kern_prot.c b/sys/kern/kern_prot.c
	--- a/sys/kern/kern_prot.c
	+++ b/sys/kern/kern_prot.c
	@@ -1316,6 +1316,19 @@
	return (supplementary_group_member(gid, cred));
	}

	+/*
	+ * Check if gid is a member of the real group set (i.e., real and supplementary
	+ * groups).
	+ */
	+int
	+realgroupmember(gid_t gid, struct ucred *cred)
	+{
	+ if (gid == cred->cr_rgid)
	+ return (1);
	+
	+ return (supplementary_group_member(gid, cred));
	+}
	+
	/*
	* Test the active securelevel against a given level. securelevel_gt()
	* implements (securelevel > level). securelevel_ge() implements
	diff --git a/sys/sys/ucred.h b/sys/sys/ucred.h
	--- a/sys/sys/ucred.h
	+++ b/sys/sys/ucred.h
	@@ -159,6 +159,7 @@
	void cru2xt(struct thread td, struct xucred xcr);
	void crsetgroups(struct ucred cr, int n, gid_t groups);
	int groupmember(gid_t gid, struct ucred *cred);
	+int realgroupmember(gid_t gid, struct ucred *cred);
	#endif /* _KERNEL */

	#endif /* !_SYS_UCRED_H_ */