Add a testcase of pipe that child process sends message to parent process.
Signed-off-by: Yuan Tan tanyuan@tinylab.org --- 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;