Add a testcase of pipe that child process sends message to parent process.
Signed-off-by: Yuan Tan <tanyuan@xxxxxxxxxxx>
---
tools/testing/selftests/nolibc/nolibc-test.c | 34 ++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 03b1d30f5507..43ba2884fd1e 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -767,6 +767,39 @@ int test_mmap_munmap(void)
return ret;
}
+int test_pipe(void)
+{
+ int pipefd[2];
+ char buf[32];
+ pid_t pid;
+ char *msg = "hello, nolibc";
+
+ if (pipe(pipefd) == -1)
+ return 1;
+
+ pid = fork();
+
+ switch (pid) {
+ case -1:
+ return 1;
+
+ case 0:
+ close(pipefd[0]);
+ write(pipefd[1], msg, strlen(msg));
+ close(pipefd[1]);
+ exit(EXIT_SUCCESS);
+
+ default:
+ close(pipefd[1]);
+ read(pipefd[0], buf, 32);
+ close(pipefd[0]);
+ wait(NULL);
+
+ if (strcmp(buf, msg))
+ return 1;
+ return 0;
+ }
+}
/* Run syscall tests between IDs <min> and <max>.
* Return 0 on success, non-zero on failure.
@@ -851,6 +884,7 @@ int run_syscall(int min, int max)
CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
+ CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
--
2.39.2
