// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/prevent_map_lookup.c */

#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

struct {
        __uint(type, BPF_MAP_TYPE_STACK_TRACE);
        __uint(max_entries, 1);
        __type(key, __u32);
        __type(value, __u64);
} map_stacktrace SEC(".maps");

struct {
        __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
        __uint(max_entries, 8);
        __uint(key_size, sizeof(int));
        __array(values, void (void));
} map_prog2_socket SEC(".maps");

SEC("perf_event")
__description("prevent map lookup in stack trace")
__failure __msg("cannot pass map_type 7 into func bpf_map_lookup_elem")
__naked void map_lookup_in_stack_trace(void)
{
        asm volatile ("                                 \
        r1 = 0;                                         \
        *(u64*)(r10 - 8) = r1;                          \
        r2 = r10;                                       \
        r2 += -8;                                       \
        r1 = %[map_stacktrace] ll;                      \
        call %[bpf_map_lookup_elem];                    \
        exit;                                           \
"       :
        : __imm(bpf_map_lookup_elem),
          __imm_addr(map_stacktrace)
        : __clobber_all);
}

SEC("socket")
__description("prevent map lookup in prog array")
__failure __msg("cannot pass map_type 3 into func bpf_map_lookup_elem")
__failure_unpriv
__naked void map_lookup_in_prog_array(void)
{
        asm volatile ("                                 \
        r1 = 0;                                         \
        *(u64*)(r10 - 8) = r1;                          \
        r2 = r10;                                       \
        r2 += -8;                                       \
        r1 = %[map_prog2_socket] ll;                    \
        call %[bpf_map_lookup_elem];                    \
        exit;                                           \
"       :
        : __imm(bpf_map_lookup_elem),
          __imm_addr(map_prog2_socket)
        : __clobber_all);
}

char _license[] SEC("license") = "GPL";