From 5c01259b1256ebc59bf6d64b396e7464f21c2583 Mon Sep 17 00:00:00 2001 From: Yuan Tan Date: Tue, 1 Aug 2023 23:40:23 +0800 Subject: [PATCH] selftests/nolibc: add testcase for pipe MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add a test case of pipe that sends and receives message in a single process. Suggested-by: Thomas Weißschuh Suggested-by: Willy Tarreau Link: https://lore.kernel.org/all/c5de2d13-3752-4e1b-90d9-f58cca99c702@t-8ch.de/ Signed-off-by: Yuan Tan Reviewed-by: Thomas Weißschuh [wt: fixed the "len" type to size_t to address a sign-compare warning with upcoming patches] Signed-off-by: Willy Tarreau --- tools/testing/selftests/nolibc/nolibc-test.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index 4d39823..7952107 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -768,6 +768,27 @@ end: return !!ret; } +static int test_pipe(void) +{ + const char *const msg = "hello, nolibc"; + int pipefd[2]; + char buf[32]; + size_t len; + + if (pipe(pipefd) == -1) + return 1; + + write(pipefd[1], msg, strlen(msg)); + close(pipefd[1]); + len = read(pipefd[0], buf, sizeof(buf)); + close(pipefd[0]); + + if (len != strlen(msg)) + return 1; + + return !!memcmp(buf, msg, len); +} + /* Run syscall tests between IDs and . * Return 0 on success, non-zero on failure. @@ -853,6 +874,7 @@ 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; -- 2.7.4