Convert to TAP13 output using ksft_ api. Child runs tests, increments test
counters, and prints test results.

Signed-off-by: Shuah Khan <shua...@osg.samsung.com>
---

Changes since v1:
- Add ksft_print_header()

 tools/testing/selftests/kcmp/kcmp_test.c | 48 +++++++++++++-------------------
 1 file changed, 19 insertions(+), 29 deletions(-)

diff --git a/tools/testing/selftests/kcmp/kcmp_test.c 
b/tools/testing/selftests/kcmp/kcmp_test.c
index a5a4da856dfe..563018d81c45 100644
--- a/tools/testing/selftests/kcmp/kcmp_test.c
+++ b/tools/testing/selftests/kcmp/kcmp_test.c
@@ -34,16 +34,14 @@ int main(int argc, char **argv)
        fd1 = open(kpath, O_RDWR | O_CREAT | O_TRUNC, 0644);
        pid1 = getpid();
 
-       if (fd1 < 0) {
-               perror("Can't create file");
-               ksft_exit_fail();
-       }
+       ksft_print_header();
+
+       if (fd1 < 0)
+               ksft_exit_fail_msg("Can't create file: %s\n", strerror(errno));
 
        pid2 = fork();
-       if (pid2 < 0) {
-               perror("fork failed");
-               ksft_exit_fail();
-       }
+       if (pid2 < 0)
+               ksft_exit_fail_msg("fork() failed: %s\n", strerror(errno));
 
        if (!pid2) {
                int pid2 = getpid();
@@ -51,14 +49,14 @@ int main(int argc, char **argv)
 
                fd2 = open(kpath, O_RDWR, 0644);
                if (fd2 < 0) {
-                       perror("Can't open file");
-                       ksft_exit_fail();
+                       ksft_print_msg("Can't open file: %s\n",
+                               strerror(errno));
+                       exit(KSFT_FAIL);
                }
 
                /* An example of output and arguments */
-               printf("pid1: %6d pid2: %6d FD: %2ld FILES: %2ld VM: %2ld "
-                      "FS: %2ld SIGHAND: %2ld IO: %2ld SYSVSEM: %2ld "
-                      "INV: %2ld\n",
+               ksft_print_msg(
+                       "pid1: %6d pid2: %6d FD: %2ld\n  FILES: %2ld VM: %2ld 
FS: %2ld SIGHAND: %2ld\n  IO: %2ld SYSVSEM: %2ld INV: %2ld\n",
                       pid1, pid2,
                       sys_kcmp(pid1, pid2, KCMP_FILE,          fd1, fd2),
                       sys_kcmp(pid1, pid2, KCMP_FILES,         0, 0),
@@ -74,28 +72,22 @@ int main(int argc, char **argv)
                /* This one should return same fd */
                ret = sys_kcmp(pid1, pid2, KCMP_FILE, fd1, fd1);
                if (ret) {
-                       printf("FAIL: 0 expected but %d returned (%s)\n",
+                       ksft_test_result_fail(
+                               "0 expected but %d returned (%s)\n",
                                ret, strerror(errno));
-                       ksft_inc_fail_cnt();
                        ret = -1;
-               } else {
-                       printf("PASS: 0 returned as expected\n");
-                       ksft_inc_pass_cnt();
-               }
+               } else
+                       ksft_test_result_pass("0 returned as expected\n");
 
                /* Compare with self */
                ret = sys_kcmp(pid1, pid1, KCMP_VM, 0, 0);
                if (ret) {
-                       printf("FAIL: 0 expected but %d returned (%s)\n",
+                       ksft_test_result_fail(
+                               "0 expected but %d returned (%s)\n",
                                ret, strerror(errno));
-                       ksft_inc_fail_cnt();
                        ret = -1;
-               } else {
-                       printf("PASS: 0 returned as expected\n");
-                       ksft_inc_pass_cnt();
-               }
-
-               ksft_print_cnts();
+               } else
+                       ksft_test_result_pass("0 returned as expected\n");
 
                if (ret)
                        ksft_exit_fail();
@@ -104,6 +96,4 @@ int main(int argc, char **argv)
        }
 
        waitpid(pid2, &status, P_ALL);
-
-       return ksft_exit_pass();
 }
-- 
2.11.0

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