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Subject[PATCH] selftests: capabilities: convert error output to TAP13 ksft framework
Date
Convert errx() and err() usage to appropriate TAP13 ksft API.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
tools/testing/selftests/capabilities/test_execve.c | 105 ++++++++++++---------
.../testing/selftests/capabilities/validate_cap.c | 9 +-
2 files changed, 65 insertions(+), 49 deletions(-)

diff --git a/tools/testing/selftests/capabilities/test_execve.c b/tools/testing/selftests/capabilities/test_execve.c
index 7c38233292b0..cf6778441381 100644
--- a/tools/testing/selftests/capabilities/test_execve.c
+++ b/tools/testing/selftests/capabilities/test_execve.c
@@ -1,7 +1,6 @@
#define _GNU_SOURCE

#include <cap-ng.h>
-#include <err.h>
#include <linux/capability.h>
#include <stdbool.h>
#include <string.h>
@@ -39,29 +38,32 @@ static void vmaybe_write_file(bool enoent_ok, char *filename, char *fmt, va_list
int buf_len;

buf_len = vsnprintf(buf, sizeof(buf), fmt, ap);
- if (buf_len < 0) {
- err(1, "vsnprintf failed");
- }
- if (buf_len >= sizeof(buf)) {
- errx(1, "vsnprintf output truncated");
- }
+ if (buf_len < 0)
+ ksft_exit_fail_msg("vsnprintf failed - %s\n", strerror(errno));
+
+ if (buf_len >= sizeof(buf))
+ ksft_exit_fail_msg("vsnprintf output truncated\n");
+

fd = open(filename, O_WRONLY);
if (fd < 0) {
if ((errno == ENOENT) && enoent_ok)
return;
- err(1, "open of %s failed", filename);
+ ksft_exit_fail_msg("open of %s failed - %s\n",
+ filename, strerror(errno));
}
written = write(fd, buf, buf_len);
if (written != buf_len) {
if (written >= 0) {
- errx(1, "short write to %s", filename);
+ ksft_exit_fail_msg("short write to %s\n", filename);
} else {
- err(1, "write to %s failed", filename);
+ ksft_exit_fail_msg("write to %s failed - %s\n",
+ filename, strerror(errno));
}
}
if (close(fd) != 0) {
- err(1, "close of %s failed", filename);
+ ksft_exit_fail_msg("close of %s failed - %s\n",
+ filename, strerror(errno));
}
}

@@ -100,9 +102,10 @@ static bool create_and_enter_ns(uid_t inner_uid)
if (unshare(CLONE_NEWNS) == 0) {
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");
+ ksft_exit_fail_msg("PR_SET_KEEPCAPS - %s\n",
+ strerror(errno));
if (setresuid(inner_uid, inner_uid, -1) != 0)
- err(1, "setresuid");
+ ksft_exit_fail_msg("setresuid - %s\n", strerror(errno));

// Re-enable effective caps
capng_get_caps_process();
@@ -110,7 +113,8 @@ static bool create_and_enter_ns(uid_t inner_uid)
if (capng_have_capability(CAPNG_PERMITTED, i))
capng_update(CAPNG_ADD, CAPNG_EFFECTIVE, i);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg(
+ "capng_apply - %s\n", strerror(errno));

have_outer_privilege = true;
} else if (unshare(CLONE_NEWUSER | CLONE_NEWNS) == 0) {
@@ -121,11 +125,12 @@ static bool create_and_enter_ns(uid_t inner_uid)

have_outer_privilege = false;
} else {
- errx(1, "must be root or be able to create a userns");
+ ksft_exit_skip("must be root or be able to create a userns\n");
}

if (mount("none", "/", NULL, MS_REC | MS_PRIVATE, NULL) != 0)
- err(1, "remount everything private");
+ ksft_exit_fail_msg("remount everything private - %s\n",
+ strerror(errno));

return have_outer_privilege;
}
@@ -134,20 +139,22 @@ static void chdir_to_tmpfs(void)
{
char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd)) != cwd)
- err(1, "getcwd");
+ ksft_exit_fail_msg("getcwd - %s\n", strerror(errno));

if (mount("private_tmp", ".", "tmpfs", 0, "mode=0777") != 0)
- err(1, "mount private tmpfs");
+ ksft_exit_fail_msg("mount private tmpfs - %s\n",
+ strerror(errno));

if (chdir(cwd) != 0)
- err(1, "chdir to private tmpfs");
+ ksft_exit_fail_msg("chdir to private tmpfs - %s\n",
+ strerror(errno));
}

static void copy_fromat_to(int fromfd, const char *fromname, const char *toname)
{
int from = openat(fromfd, fromname, O_RDONLY);
if (from == -1)
- err(1, "open copy source");
+ ksft_exit_fail_msg("open copy source - %s\n", strerror(errno));

int to = open(toname, O_CREAT | O_WRONLY | O_EXCL, 0700);

@@ -157,10 +164,11 @@ static void copy_fromat_to(int fromfd, const char *fromname, const char *toname)
if (sz == 0)
break;
if (sz < 0)
- err(1, "read");
+ ksft_exit_fail_msg("read - %s\n", strerror(errno));

if (write(to, buf, sz) != sz)
- err(1, "write"); /* no short writes on tmpfs */
+ /* no short writes on tmpfs */
+ ksft_exit_fail_msg("write - %s\n", strerror(errno));
}

close(from);
@@ -189,7 +197,8 @@ static bool fork_wait(void)
}
return false;
} else {
- err(1, "fork");
+ ksft_exit_fail_msg("fork - %s\n", strerror(errno));
+ return false;
}
}

@@ -199,7 +208,7 @@ static void exec_other_validate_cap(const char *name,
execl(name, name, (eff ? "1" : "0"),
(perm ? "1" : "0"), (inh ? "1" : "0"), (ambient ? "1" : "0"),
NULL);
- err(1, "execl");
+ ksft_exit_fail_msg("execl - %s\n", strerror(errno));
}

static void exec_validate_cap(bool eff, bool perm, bool inh, bool ambient)
@@ -213,7 +222,8 @@ static int do_tests(int uid, const char *our_path)

int ourpath_fd = open(our_path, O_RDONLY | O_DIRECTORY);
if (ourpath_fd == -1)
- err(1, "open '%s'", our_path);
+ ksft_exit_fail_msg("open '%s' - %s\n",
+ our_path, strerror(errno));

chdir_to_tmpfs();

@@ -225,30 +235,30 @@ static int do_tests(int uid, const char *our_path)
copy_fromat_to(ourpath_fd, "validate_cap",
"validate_cap_suidroot");
if (chown("validate_cap_suidroot", 0, -1) != 0)
- err(1, "chown");
+ ksft_exit_fail_msg("chown - %s\n", strerror(errno));
if (chmod("validate_cap_suidroot", S_ISUID | 0700) != 0)
- err(1, "chmod");
+ ksft_exit_fail_msg("chmod - %s\n", strerror(errno));

copy_fromat_to(ourpath_fd, "validate_cap",
"validate_cap_suidnonroot");
if (chown("validate_cap_suidnonroot", uid + 1, -1) != 0)
- err(1, "chown");
+ ksft_exit_fail_msg("chown - %s\n", strerror(errno));
if (chmod("validate_cap_suidnonroot", S_ISUID | 0700) != 0)
- err(1, "chmod");
+ ksft_exit_fail_msg("chmod - %s\n", strerror(errno));

copy_fromat_to(ourpath_fd, "validate_cap",
"validate_cap_sgidroot");
if (chown("validate_cap_sgidroot", -1, 0) != 0)
- err(1, "chown");
+ ksft_exit_fail_msg("chown - %s\n", strerror(errno));
if (chmod("validate_cap_sgidroot", S_ISGID | 0710) != 0)
- err(1, "chmod");
+ ksft_exit_fail_msg("chmod - %s\n", strerror(errno));

copy_fromat_to(ourpath_fd, "validate_cap",
"validate_cap_sgidnonroot");
if (chown("validate_cap_sgidnonroot", -1, gid + 1) != 0)
- err(1, "chown");
+ ksft_exit_fail_msg("chown - %s\n", strerror(errno));
if (chmod("validate_cap_sgidnonroot", S_ISGID | 0710) != 0)
- err(1, "chmod");
+ ksft_exit_fail_msg("chmod - %s\n", strerror(errno));
}

capng_get_caps_process();
@@ -256,7 +266,7 @@ static int do_tests(int uid, const char *our_path)
/* Make sure that i starts out clear */
capng_update(CAPNG_DROP, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg("capng_apply - %s\n", strerror(errno));

if (uid == 0) {
ksft_print_msg("[RUN]\tRoot => ep\n");
@@ -287,7 +297,7 @@ static int do_tests(int uid, const char *our_path)
capng_update(CAPNG_DROP, CAPNG_PERMITTED, CAP_NET_RAW);
capng_update(CAPNG_DROP, CAPNG_EFFECTIVE, CAP_NET_RAW);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg("capng_apply - %s\n", strerror(errno));
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_RAW, 0, 0, 0) != -1 || errno != EPERM) {
ksft_test_result_fail(
"PR_CAP_AMBIENT_RAISE should have failed on a non-permitted cap\n");
@@ -298,7 +308,7 @@ static int do_tests(int uid, const char *our_path)

capng_update(CAPNG_ADD, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg("capng_apply - %s\n", strerror(errno));
if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
ksft_test_result_fail(
"PR_CAP_AMBIENT_RAISE should have succeeded\n");
@@ -312,7 +322,8 @@ static int do_tests(int uid, const char *our_path)
}

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0, 0) != 0)
- err(1, "PR_CAP_AMBIENT_CLEAR_ALL");
+ ksft_exit_fail_msg("PR_CAP_AMBIENT_CLEAR_ALL - %s\n",
+ strerror(errno));

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
ksft_test_result_fail(
@@ -321,11 +332,12 @@ 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");
+ ksft_exit_fail_msg("PR_CAP_AMBIENT_RAISE - %s\n",
+ strerror(errno));

capng_update(CAPNG_DROP, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg("capng_apply - %s\n", strerror(errno));

if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) {
ksft_test_result_fail("Dropping I should have dropped A\n");
@@ -336,7 +348,7 @@ static int do_tests(int uid, const char *our_path)

capng_update(CAPNG_ADD, CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE);
if (capng_apply(CAPNG_SELECT_CAPS) != 0)
- err(1, "capng_apply");
+ ksft_exit_fail_msg("capng_apply - %s\n", strerror(errno));
if (uid == 0) {
ksft_print_msg("[RUN]\tRoot +i => eip\n");
if (fork_wait())
@@ -348,7 +360,8 @@ 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");
+ ksft_exit_fail_msg("PR_CAP_AMBIENT_RAISE - %s\n",
+ strerror(errno));

ksft_print_msg("[RUN]\tUID %d +ia => eipa\n", uid);
if (fork_wait())
@@ -381,7 +394,8 @@ static int do_tests(int uid, const char *our_path)
ksft_print_msg(
"[RUN]\tRoot, gid != 0, +ia, sgidroot => eip\n");
if (setresgid(1, 1, 1) != 0)
- err(1, "setresgid");
+ ksft_exit_fail_msg("setresgid - %s\n",
+ strerror(errno));
exec_other_validate_cap("./validate_cap_sgidroot",
true, true, true, false);
}
@@ -399,7 +413,8 @@ static int do_tests(int uid, const char *our_path)
if (fork_wait()) {
ksft_print_msg("[RUN]\tNon-root +ia, sgidroot => i\n");
if (setresgid(1, 1, 1) != 0)
- err(1, "setresgid");
+ ksft_exit_fail_msg("setresgid - %s\n",
+ strerror(errno));
exec_other_validate_cap("./validate_cap_sgidroot",
false, false, true, false);
}
@@ -419,11 +434,11 @@ int main(int argc, char **argv)
/* Find our path */
tmp1 = strdup(argv[0]);
if (!tmp1)
- err(1, "strdup");
+ ksft_exit_fail_msg("strdup - %s\n", strerror(errno));
tmp2 = dirname(tmp1);
our_path = strdup(tmp2);
if (!our_path)
- err(1, "strdup");
+ ksft_exit_fail_msg("strdup - %s\n", strerror(errno));
free(tmp1);

mpid = getpid();
diff --git a/tools/testing/selftests/capabilities/validate_cap.c b/tools/testing/selftests/capabilities/validate_cap.c
index 9fd4345a8987..694cd73d4493 100644
--- a/tools/testing/selftests/capabilities/validate_cap.c
+++ b/tools/testing/selftests/capabilities/validate_cap.c
@@ -1,5 +1,4 @@
#include <cap-ng.h>
-#include <err.h>
#include <linux/capability.h>
#include <stdbool.h>
#include <string.h>
@@ -27,8 +26,10 @@ static bool bool_arg(char **argv, int i)
return false;
else if (!strcmp(argv[i], "1"))
return true;
- else
- errx(1, "wrong argv[%d]", i);
+ else {
+ ksft_exit_fail_msg("wrong argv[%d]\n", i);
+ return false;
+ }
}

int main(int argc, char **argv)
@@ -41,7 +42,7 @@ int main(int argc, char **argv)
*/

if (argc != 5)
- errx(1, "wrong argc");
+ ksft_exit_fail_msg("wrong argc\n");

#ifdef HAVE_GETAUXVAL
if (getauxval(AT_SECURE))
--
2.11.0
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