add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/security/selinux/ss/mls.h
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@@ -22,7 +22,10 @@
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 #ifndef _SS_MLS_H_
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 #define _SS_MLS_H_
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+#include <linux/jhash.h>
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+
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 #include "context.h"
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+#include "ebitmap.h"
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 #include "policydb.h"
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 int mls_compute_context_len(struct policydb *p, struct context *context);
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@@ -101,5 +104,13 @@
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 }
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 #endif
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+static inline u32 mls_range_hash(const struct mls_range *r, u32 hash)
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+{
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+	hash = jhash_2words(r->level[0].sens, r->level[1].sens, hash);
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+	hash = ebitmap_hash(&r->level[0].cat, hash);
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+	hash = ebitmap_hash(&r->level[1].cat, hash);
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+	return hash;
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+}
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+
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 #endif	/* _SS_MLS_H */
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