113 lines · c
1// SPDX-License-Identifier: GPL-2.02 3/*4 * Copyright (C) 2022 Huawei Technologies Duesseldorf GmbH5 *6 * Author: Roberto Sassu <roberto.sassu@huawei.com>7 */8 9#include <linux/keyctl.h>10#include <test_progs.h>11 12#include "test_lookup_key.skel.h"13 14#define KEY_LOOKUP_CREATE 0x0115#define KEY_LOOKUP_PARTIAL 0x0216 17static bool kfunc_not_supported;18 19static int libbpf_print_cb(enum libbpf_print_level level, const char *fmt,20 va_list args)21{22 char *func;23 24 if (strcmp(fmt, "libbpf: extern (func ksym) '%s': not found in kernel or module BTFs\n"))25 return 0;26 27 func = va_arg(args, char *);28 29 if (strcmp(func, "bpf_lookup_user_key") && strcmp(func, "bpf_key_put") &&30 strcmp(func, "bpf_lookup_system_key"))31 return 0;32 33 kfunc_not_supported = true;34 return 0;35}36 37void test_lookup_key(void)38{39 libbpf_print_fn_t old_print_cb;40 struct test_lookup_key *skel;41 __u32 next_id;42 int ret;43 44 skel = test_lookup_key__open();45 if (!ASSERT_OK_PTR(skel, "test_lookup_key__open"))46 return;47 48 old_print_cb = libbpf_set_print(libbpf_print_cb);49 ret = test_lookup_key__load(skel);50 libbpf_set_print(old_print_cb);51 52 if (ret < 0 && kfunc_not_supported) {53 printf("%s:SKIP:bpf_lookup_*_key(), bpf_key_put() kfuncs not supported\n",54 __func__);55 test__skip();56 goto close_prog;57 }58 59 if (!ASSERT_OK(ret, "test_lookup_key__load"))60 goto close_prog;61 62 ret = test_lookup_key__attach(skel);63 if (!ASSERT_OK(ret, "test_lookup_key__attach"))64 goto close_prog;65 66 skel->bss->monitored_pid = getpid();67 skel->bss->key_serial = KEY_SPEC_THREAD_KEYRING;68 69 /* The thread-specific keyring does not exist, this test fails. */70 skel->bss->flags = 0;71 72 ret = bpf_prog_get_next_id(0, &next_id);73 if (!ASSERT_LT(ret, 0, "bpf_prog_get_next_id"))74 goto close_prog;75 76 /* Force creation of the thread-specific keyring, this test succeeds. */77 skel->bss->flags = KEY_LOOKUP_CREATE;78 79 ret = bpf_prog_get_next_id(0, &next_id);80 if (!ASSERT_OK(ret, "bpf_prog_get_next_id"))81 goto close_prog;82 83 /* Pass both lookup flags for parameter validation. */84 skel->bss->flags = KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL;85 86 ret = bpf_prog_get_next_id(0, &next_id);87 if (!ASSERT_OK(ret, "bpf_prog_get_next_id"))88 goto close_prog;89 90 /* Pass invalid flags. */91 skel->bss->flags = UINT64_MAX;92 93 ret = bpf_prog_get_next_id(0, &next_id);94 if (!ASSERT_LT(ret, 0, "bpf_prog_get_next_id"))95 goto close_prog;96 97 skel->bss->key_serial = 0;98 skel->bss->key_id = 1;99 100 ret = bpf_prog_get_next_id(0, &next_id);101 if (!ASSERT_OK(ret, "bpf_prog_get_next_id"))102 goto close_prog;103 104 skel->bss->key_id = UINT32_MAX;105 106 ret = bpf_prog_get_next_id(0, &next_id);107 ASSERT_LT(ret, 0, "bpf_prog_get_next_id");108 109close_prog:110 skel->bss->monitored_pid = 0;111 test_lookup_key__destroy(skel);112}113