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test: Check that "native" architecture is always filtered

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This commit is contained in:
Benjamin Berg
2021-09-17 14:00:39 +02:00
committed by Yu Watanabe
parent f833df3848
commit 08bf703cc1
1 changed files with 61 additions and 0 deletions
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61
src/test/test-seccomp.c
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@@ -890,6 +890,66 @@ static void test_load_syscall_filter_set_raw(void) {
assert_se(wait_for_terminate_and_check("syscallrawseccomp", pid, WAIT_LOG) == EXIT_SUCCESS);
}
static void test_native_syscalls_filtered(void) {
pid_t pid;
log_info("/* %s */", __func__);
if (!is_seccomp_available()) {
log_notice("Seccomp not available, skipping %s", __func__);
return;
}
if (!have_seccomp_privs()) {
log_notice("Not privileged, skipping %s", __func__);
return;
}
pid = fork();
assert_se(pid >= 0);
if (pid == 0) {
_cleanup_set_free_ Set *arch_s = NULL;
_cleanup_hashmap_free_ Hashmap *s = NULL;
/* Passing "native" or an empty set is equivalent, just do both here. */
assert_se(arch_s = set_new(NULL));
assert_se(seccomp_restrict_archs(arch_s) >= 0);
assert_se(set_put(arch_s, SCMP_ARCH_NATIVE) >= 0);
assert_se(seccomp_restrict_archs(arch_s) >= 0);
assert_se(access("/", F_OK) >= 0);
assert_se(poll(NULL, 0, 0) == 0);
assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, NULL, scmp_act_kill_process(), true) >= 0);
assert_se(access("/", F_OK) >= 0);
assert_se(poll(NULL, 0, 0) == 0);
assert_se(s = hashmap_new(NULL));
#if defined __NR_access && __NR_access >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_access + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has access()");
#endif
#if defined __NR_faccessat && __NR_faccessat >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has faccessat()");
#endif
#if defined __NR_faccessat2 && __NR_faccessat2 >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat2 + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has faccessat2()");
#endif
assert_se(!hashmap_isempty(s));
assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EUCLEAN), true) >= 0);
assert_se(access("/", F_OK) < 0);
assert_se(errno == EUCLEAN);
_exit(EXIT_SUCCESS);
}
assert_se(wait_for_terminate_and_check("nativeseccomp", pid, WAIT_LOG) == EXIT_SUCCESS);
}
static void test_lock_personality(void) {
unsigned long current;
pid_t pid;
@@ -1171,6 +1231,7 @@ int main(int argc, char *argv[]) {
test_memory_deny_write_execute_shmat();
test_restrict_archs();
test_load_syscall_filter_set_raw();
test_native_syscalls_filtered();
test_lock_personality();
test_restrict_suid_sgid();