[PATCH 2/2] selftests: capabilities: convert the test to use TAP13 ksft framework

From: Shuah Khan
Date: Tue Jul 25 2017 - 18:02:10 EST

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Convert the test to use TAP13 ksft framework for test output. Converting
error paths using err() and errx() will be done in another patch to make
it easier for review and change management.

Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
---
tools/testing/selftests/capabilities/test_execve.c | 85 +++++++++++++---------
.../testing/selftests/capabilities/validate_cap.c | 15 ++--
2 files changed, 62 insertions(+), 38 deletions(-)

diff --git a/tools/testing/selftests/capabilities/test_execve.c b/tools/testing/selftests/capabilities/test_execve.c
index 7f2e999839c2..7c38233292b0 100644
--- a/tools/testing/selftests/capabilities/test_execve.c
+++ b/tools/testing/selftests/capabilities/test_execve.c
@@ -18,6 +18,8 @@
#include <sys/prctl.h>
#include <sys/stat.h>

+#include "../kselftest.h"
+
#ifndef PR_CAP_AMBIENT
#define PR_CAP_AMBIENT 47
# define PR_CAP_AMBIENT_IS_SET 1
@@ -27,6 +29,7 @@
#endif

static int nerrs;
+static pid_t mpid; /* main() pid is used to avoid duplicate test counts */

static void vmaybe_write_file(bool enoent_ok, char *filename, char *fmt, va_list ap)
{
@@ -95,7 +98,7 @@ static bool create_and_enter_ns(uid_t inner_uid)
*/

if (unshare(CLONE_NEWNS) == 0) {
- printf("[NOTE]\tUsing global UIDs for tests\n");
+ ksft_print_msg("[NOTE]\tUsing global UIDs for tests\n");
if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0)
err(1, "PR_SET_KEEPCAPS");
if (setresuid(inner_uid, inner_uid, -1) != 0)
@@ -111,7 +114,7 @@ static bool create_and_enter_ns(uid_t inner_uid)

have_outer_privilege = true;
} else if (unshare(CLONE_NEWUSER | CLONE_NEWNS) == 0) {
- printf("[NOTE]\tUsing a user namespace for tests\n");
+ ksft_print_msg("[NOTE]\tUsing a user namespace for tests\n");
maybe_write_file("/proc/self/setgroups", "deny");
write_file("/proc/self/uid_map", "%d %d 1", inner_uid, outer_uid);
write_file("/proc/self/gid_map", "0 %d 1", outer_gid);
@@ -174,15 +177,16 @@ static bool fork_wait(void)
int status;
if (waitpid(child, &status, 0) != child ||
!WIFEXITED(status)) {
- printf("[FAIL]\tChild died\n");
+ ksft_print_msg("Child died\n");
nerrs++;
} else if (WEXITSTATUS(status) != 0) {
- printf("[FAIL]\tChild failed\n");
+ ksft_print_msg("Child failed\n");
nerrs++;
} else {
- printf("[OK]\tChild succeeded\n");
+ /* don't print this message for mpid */
+ if (getpid() != mpid)
+ ksft_test_result_pass("Passed\n");
}
-
return false;
} else {
err(1, "fork");
@@ -255,26 +259,29 @@ static int do_tests(int uid, const char *our_path)
err(1, "capng_apply");

if (uid == 0) {
- printf("[RUN]\tRoot => ep\n");
+ ksft_print_msg("[RUN]\tRoot => ep\n");
if (fork_wait())
exec_validate_cap(true, true, false, false);
} else {
- printf("[RUN]\tNon-root => no caps\n");
+ ksft_print_msg("[RUN]\tNon-root => no caps\n");
if (fork_wait())
exec_validate_cap(false, false, false, false);
}

- printf("[OK]\tCheck cap_ambient manipulation rules\n");
+ ksft_print_msg("Check cap_ambient manipulation rules\n");

/* We should not be able to add ambient caps yet. */
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != -1 || errno != EPERM) {
if (errno == EINVAL)
- printf("[FAIL]\tPR_CAP_AMBIENT_RAISE isn't supported\n");
+ ksft_test_result_fail(
+ "PR_CAP_AMBIENT_RAISE isn't supported\n");
else
- printf("[FAIL]\tPR_CAP_AMBIENT_RAISE should have failed eith EPERM on a non-inheritable cap\n");
+ ksft_test_result_fail(
+ "PR_CAP_AMBIENT_RAISE should have failed eith EPERM on a non-inheritable cap\n");
return 1;
}
- printf("[OK]\tPR_CAP_AMBIENT_RAISE failed on non-inheritable cap\n");
+ ksft_test_result_pass(
+ "PR_CAP_AMBIENT_RAISE failed on non-inheritable cap\n");

capng_update(CAPNG_ADD, CAPNG_INHERITABLE, CAP_NET_RAW);
capng_update(CAPNG_DROP, CAPNG_PERMITTED, CAP_NET_RAW);
@@ -282,22 +289,25 @@ static int do_tests(int uid, const char *our_path)
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
err(1, "capng_apply");
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_RAW, 0, 0, 0) != -1 || errno != EPERM) {
- printf("[FAIL]\tPR_CAP_AMBIENT_RAISE should have failed on a non-permitted cap\n");
+ ksft_test_result_fail(
+ "PR_CAP_AMBIENT_RAISE should have failed on a non-permitted cap\n");
return 1;
}
- printf("[OK]\tPR_CAP_AMBIENT_RAISE failed on non-permitted cap\n");
+ ksft_test_result_pass(
+ "PR_CAP_AMBIENT_RAISE failed on non-permitted cap\n");

capng_update(CAPNG_ADD, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
err(1, "capng_apply");
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
- printf("[FAIL]\tPR_CAP_AMBIENT_RAISE should have succeeded\n");
+ ksft_test_result_fail(
+ "PR_CAP_AMBIENT_RAISE should have succeeded\n");
return 1;
}
- printf("[OK]\tPR_CAP_AMBIENT_RAISE worked\n");
+ ksft_test_result_pass("PR_CAP_AMBIENT_RAISE worked\n");

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 1) {
- printf("[FAIL]\tPR_CAP_AMBIENT_IS_SET is broken\n");
+ ksft_test_result_fail("PR_CAP_AMBIENT_IS_SET is broken\n");
return 1;
}

@@ -305,7 +315,8 @@ static int do_tests(int uid, const char *our_path)
err(1, "PR_CAP_AMBIENT_CLEAR_ALL");

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
- printf("[FAIL]\tPR_CAP_AMBIENT_CLEAR_ALL didn't work\n");
+ ksft_test_result_fail(
+ "PR_CAP_AMBIENT_CLEAR_ALL didn't work\n");
return 1;
}

@@ -317,21 +328,21 @@ static int do_tests(int uid, const char *our_path)
err(1, "capng_apply");

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
- printf("[FAIL]\tDropping I should have dropped A\n");
+ ksft_test_result_fail("Dropping I should have dropped A\n");
return 1;
}

- printf("[OK]\tBasic manipulation appears to work\n");
+ ksft_test_result_pass("Basic manipulation appears to work\n");

capng_update(CAPNG_ADD, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
err(1, "capng_apply");
if (uid == 0) {
- printf("[RUN]\tRoot +i => eip\n");
+ ksft_print_msg("[RUN]\tRoot +i => eip\n");
if (fork_wait())
exec_validate_cap(true, true, true, false);
} else {
- printf("[RUN]\tNon-root +i => i\n");
+ ksft_print_msg("[RUN]\tNon-root +i => i\n");
if (fork_wait())
exec_validate_cap(false, false, true, false);
}
@@ -339,53 +350,54 @@ static int do_tests(int uid, const char *our_path)
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0)
err(1, "PR_CAP_AMBIENT_RAISE");

- printf("[RUN]\tUID %d +ia => eipa\n", uid);
+ ksft_print_msg("[RUN]\tUID %d +ia => eipa\n", uid);
if (fork_wait())
exec_validate_cap(true, true, true, true);

/* The remaining tests need real privilege */

if (!have_outer_privilege) {
- printf("[SKIP]\tSUID/SGID tests (needs privilege)\n");
+ ksft_test_result_skip("SUID/SGID tests (needs privilege)\n");
goto done;
}

if (uid == 0) {
- printf("[RUN]\tRoot +ia, suidroot => eipa\n");
+ ksft_print_msg("[RUN]\tRoot +ia, suidroot => eipa\n");
if (fork_wait())
exec_other_validate_cap("./validate_cap_suidroot",
true, true, true, true);

- printf("[RUN]\tRoot +ia, suidnonroot => ip\n");
+ ksft_print_msg("[RUN]\tRoot +ia, suidnonroot => ip\n");
if (fork_wait())
exec_other_validate_cap("./validate_cap_suidnonroot",
false, true, true, false);

- printf("[RUN]\tRoot +ia, sgidroot => eipa\n");
+ ksft_print_msg("[RUN]\tRoot +ia, sgidroot => eipa\n");
if (fork_wait())
exec_other_validate_cap("./validate_cap_sgidroot",
true, true, true, true);

if (fork_wait()) {
- printf("[RUN]\tRoot, gid != 0, +ia, sgidroot => eip\n");
+ ksft_print_msg(
+ "[RUN]\tRoot, gid != 0, +ia, sgidroot => eip\n");
if (setresgid(1, 1, 1) != 0)
err(1, "setresgid");
exec_other_validate_cap("./validate_cap_sgidroot",
true, true, true, false);
}

- printf("[RUN]\tRoot +ia, sgidnonroot => eip\n");
+ ksft_print_msg("[RUN]\tRoot +ia, sgidnonroot => eip\n");
if (fork_wait())
exec_other_validate_cap("./validate_cap_sgidnonroot",
true, true, true, false);
} else {
- printf("[RUN]\tNon-root +ia, sgidnonroot => i\n");
+ ksft_print_msg("[RUN]\tNon-root +ia, sgidnonroot => i\n");
if (fork_wait())
exec_other_validate_cap("./validate_cap_sgidnonroot",
false, false, true, false);

if (fork_wait()) {
- printf("[RUN]\tNon-root +ia, sgidroot => i\n");
+ ksft_print_msg("[RUN]\tNon-root +ia, sgidroot => i\n");
if (setresgid(1, 1, 1) != 0)
err(1, "setresgid");
exec_other_validate_cap("./validate_cap_sgidroot",
@@ -394,6 +406,7 @@ static int do_tests(int uid, const char *our_path)
}

done:
+ ksft_print_cnts();
return nerrs ? 1 : 0;
}

@@ -401,6 +414,8 @@ int main(int argc, char **argv)
{
char *tmp1, *tmp2, *our_path;

+ ksft_print_header();
+
/* Find our path */
tmp1 = strdup(argv[0]);
if (!tmp1)
@@ -411,13 +426,17 @@ int main(int argc, char **argv)
err(1, "strdup");
free(tmp1);

+ mpid = getpid();
+
if (fork_wait()) {
- printf("[RUN]\t+++ Tests with uid == 0 +++\n");
+ ksft_print_msg("[RUN]\t+++ Tests with uid == 0 +++\n");
return do_tests(0, our_path);
}

+ ksft_print_msg("==================================================\n");
+
if (fork_wait()) {
- printf("[RUN]\t+++ Tests with uid != 0 +++\n");
+ ksft_print_msg("[RUN]\t+++ Tests with uid != 0 +++\n");
return do_tests(1, our_path);
}

diff --git a/tools/testing/selftests/capabilities/validate_cap.c b/tools/testing/selftests/capabilities/validate_cap.c
index dd3c45f7b23c..9fd4345a8987 100644
--- a/tools/testing/selftests/capabilities/validate_cap.c
+++ b/tools/testing/selftests/capabilities/validate_cap.c
@@ -7,6 +7,8 @@
#include <sys/prctl.h>
#include <sys/auxv.h>

+#include "../kselftest.h"
+
#ifndef PR_CAP_AMBIENT
#define PR_CAP_AMBIENT 47
# define PR_CAP_AMBIENT_IS_SET 1
@@ -51,23 +53,26 @@ int main(int argc, char **argv)
capng_get_caps_process();

if (capng_have_capability(CAPNG_EFFECTIVE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 1)) {
- printf("[FAIL]\tWrong effective state%s\n", atsec);
+ ksft_print_msg("Wrong effective state%s\n", atsec);
return 1;
}
+
if (capng_have_capability(CAPNG_PERMITTED, CAP_NET_BIND_SERVICE) != bool_arg(argv, 2)) {
- printf("[FAIL]\tWrong permitted state%s\n", atsec);
+ ksft_print_msg("Wrong permitted state%s\n", atsec);
return 1;
}
+
if (capng_have_capability(CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 3)) {
- printf("[FAIL]\tWrong inheritable state%s\n", atsec);
+ ksft_print_msg("Wrong inheritable state%s\n", atsec);
return 1;
}

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != bool_arg(argv, 4)) {
- printf("[FAIL]\tWrong ambient state%s\n", atsec);
+ ksft_print_msg("Wrong ambient state%s\n", atsec);
return 1;
}

- printf("[OK]\tCapabilities after execve were correct\n");
+ ksft_print_msg("%s: Capabilities after execve were correct\n",
+ "validate_cap:");
return 0;
}
--
2.11.0

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