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selftests/bpf: Replace CHECK with ASSERT_* in ns_current_pid_tgid test

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[ Upstream commit 84239a24d1 ]

Replace CHECK in selftest ns_current_pid_tgid with recommended ASSERT_* style.
I also shortened subtest name as the prefix of subtest name is covered
by the test name already.

This patch does fix a testing issue. Currently even if bss->user_{pid,tgid}
is not correct, the test still passed since the clone func returns 0.
I fixed it to return a non-zero value if bss->user_{pid,tgid} is incorrect.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240315184859.2975543-1-yonghong.song@linux.dev
Stable-dep-of: 21f0b0af97 ("selftests/bpf: Fix include of <sys/fcntl.h>")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yonghong Song 2024-03-15 11:48:59 -07:00 committed by Greg Kroah-Hartman
parent bedda119ba
commit d6e16c33e0
1 changed files with 19 additions and 17 deletions
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34
tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
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@ -20,19 +20,19 @@ static int test_current_pid_tgid(void *args)
{
struct test_ns_current_pid_tgid__bss *bss;
struct test_ns_current_pid_tgid *skel;
int err = -1, duration = 0;
int ret = -1, err;
pid_t tgid, pid;
struct stat st;
skel = test_ns_current_pid_tgid__open_and_load();
if (CHECK(!skel, "skel_open_load", "failed to load skeleton\n"))
goto cleanup;
if (!ASSERT_OK_PTR(skel, "test_ns_current_pid_tgid__open_and_load"))
goto out;
pid = syscall(SYS_gettid);
tgid = getpid();
err = stat("/proc/self/ns/pid", &st);
if (CHECK(err, "stat", "failed /proc/self/ns/pid: %d\n", err))
if (!ASSERT_OK(err, "stat /proc/self/ns/pid"))
goto cleanup;
bss = skel->bss;
@ -42,24 +42,26 @@ static int test_current_pid_tgid(void *args)
bss->user_tgid = 0;
err = test_ns_current_pid_tgid__attach(skel);
if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
if (!ASSERT_OK(err, "test_ns_current_pid_tgid__attach"))
goto cleanup;
/* trigger tracepoint */
usleep(1);
ASSERT_EQ(bss->user_pid, pid, "pid");
ASSERT_EQ(bss->user_tgid, tgid, "tgid");
err = 0;
if (!ASSERT_EQ(bss->user_pid, pid, "pid"))
goto cleanup;
if (!ASSERT_EQ(bss->user_tgid, tgid, "tgid"))
goto cleanup;
ret = 0;
cleanup:
test_ns_current_pid_tgid__destroy(skel);
return err;
out:
return ret;
}
static void test_ns_current_pid_tgid_new_ns(void)
{
int wstatus, duration = 0;
int wstatus;
pid_t cpid;
/* Create a process in a new namespace, this process
@ -68,21 +70,21 @@ static void test_ns_current_pid_tgid_new_ns(void)
cpid = clone(test_current_pid_tgid, child_stack + STACK_SIZE,
CLONE_NEWPID | SIGCHLD, NULL);
if (CHECK(cpid == -1, "clone", "%s\n", strerror(errno)))
if (!ASSERT_NEQ(cpid, -1, "clone"))
return;
if (CHECK(waitpid(cpid, &wstatus, 0) == -1, "waitpid", "%s\n", strerror(errno)))
if (!ASSERT_NEQ(waitpid(cpid, &wstatus, 0), -1, "waitpid"))
return;
if (CHECK(WEXITSTATUS(wstatus) != 0, "newns_pidtgid", "failed"))
if (!ASSERT_OK(WEXITSTATUS(wstatus), "newns_pidtgid"))
return;
}
/* TODO: use a different tracepoint */
void serial_test_ns_current_pid_tgid(void)
{
if (test__start_subtest("ns_current_pid_tgid_root_ns"))
if (test__start_subtest("root_ns_tp"))
test_current_pid_tgid(NULL);
if (test__start_subtest("ns_current_pid_tgid_new_ns"))
if (test__start_subtest("new_ns_tp"))
test_ns_current_pid_tgid_new_ns();
}