linux-master/kernel/seccomp.c

179 static inline bool seccomp_cache_check_allow(const struct seccomp_filter *sfilter,
185 static inline void seccomp_cache_prepare(struct seccomp_filter *sfilter)
364  * @sfilter: The seccomp filter
369 static inline bool seccomp_cache_check_allow(const struct seccomp_filter *sfilter,
373 	const struct action_cache *cache = &sfilter->cache;
650 	struct seccomp_filter *sfilter;
675 	sfilter = kzalloc(sizeof(*sfilter), GFP_KERNEL | __GFP_NOWARN);
676 	if (!sfilter)
679 	mutex_init(&sfilter->notify_lock);
680 	ret = bpf_prog_create_from_user(&sfilter->prog, fprog,
683 		kfree(sfilter);
687 	refcount_set(&sfilter->refs, 1);
688 	refcount_set(&sfilter->users, 1);
689 	init_waitqueue_head(&sfilter->wqh);
691 	return sfilter;
802 static void seccomp_cache_prepare_bitmap(struct seccomp_filter *sfilter,
806 	struct sock_fprog_kern *fprog = sfilter->prog->orig_prog;
840  * @sfilter: The seccomp filter
844 static void seccomp_cache_prepare(struct seccomp_filter *sfilter)
846 	struct action_cache *cache = &sfilter->cache;
848 		sfilter->prev ? &sfilter->prev->cache : NULL;
850 	seccomp_cache_prepare_bitmap(sfilter, cache->allow_native,
856 	seccomp_cache_prepare_bitmap(sfilter, cache->allow_compat,