From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- security/apparmor/sid.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 security/apparmor/sid.c (limited to 'security/apparmor/sid.c') diff --git a/security/apparmor/sid.c b/security/apparmor/sid.c new file mode 100644 index 00000000..f0b34f76 --- /dev/null +++ b/security/apparmor/sid.c @@ -0,0 +1,55 @@ +/* + * AppArmor security module + * + * This file contains AppArmor security identifier (sid) manipulation fns + * + * Copyright 2009-2010 Canonical Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2 of the + * License. + * + * + * AppArmor allocates a unique sid for every profile loaded. If a profile + * is replaced it receives the sid of the profile it is replacing. + * + * The sid value of 0 is invalid. + */ + +#include +#include +#include + +#include "include/sid.h" + +/* global counter from which sids are allocated */ +static u32 global_sid; +static DEFINE_SPINLOCK(sid_lock); + +/* TODO FIXME: add sid to profile mapping, and sid recycling */ + +/** + * aa_alloc_sid - allocate a new sid for a profile + */ +u32 aa_alloc_sid(void) +{ + u32 sid; + + /* + * TODO FIXME: sid recycling - part of profile mapping table + */ + spin_lock(&sid_lock); + sid = (++global_sid); + spin_unlock(&sid_lock); + return sid; +} + +/** + * aa_free_sid - free a sid + * @sid: sid to free + */ +void aa_free_sid(u32 sid) +{ + ; /* NOP ATM */ +} -- cgit v1.3.1