[PATCH 6/6] add test for aio poll and io_pgetevents

[Christoph Hellwig]

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 harness/cases/22.t | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 harness/cases/22.t

diff --git a/harness/cases/22.t b/harness/cases/22.t
new file mode 100644
index 0000000..a9fec6b
--- /dev/null
+++ b/harness/cases/22.t
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2006-2018 Free Software Foundation, Inc.
+ * Copyright (C) 2018 Christoph Hellwig.
+ * License: LGPLv2.1 or later.
+ *
+ * Description: test aio poll and io_pgetevents signal handling.
+ *
+ * Very roughly based on glibc tst-pselect.c.
+ */
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/poll.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+
+static volatile int handler_called;
+
+static void
+handler(int sig)
+{
+	handler_called = 1;
+}
+
+int test_main(void)
+{
+	struct timespec to = { .tv_sec = 0, .tv_nsec = 500000000 };
+	pid_t parent = getpid(), p;
+	int pipe1[2], pipe2[2];
+	struct sigaction sa = { .sa_flags = 0 };
+	sigset_t sigmask;
+	struct io_context *ctx = NULL;
+	struct io_event ev;
+	struct iocb iocb;
+	struct iocb *iocbs[] = { &iocb };
+	int ret;
+
+	sigemptyset(&sa.sa_mask);
+
+	sa.sa_handler = handler;
+	if (sigaction(SIGUSR1, &sa, NULL) != 0) {
+		printf("sigaction(1) failed\n");
+		return 1;
+	}
+
+	sa.sa_handler = SIG_IGN;
+	if (sigaction(SIGCHLD, &sa, NULL) != 0) {
+		printf("sigaction(2) failed\n");
+		return 1;
+	}
+
+	sigemptyset(&sigmask);
+	sigaddset(&sigmask, SIGUSR1);
+	if (sigprocmask(SIG_BLOCK, &sigmask, NULL) != 0) {
+		printf("sigprocmask failed\n");
+		return 1;
+	}
+
+	if (pipe(pipe1) != 0 || pipe(pipe2) != 0) {
+		printf("pipe failed\n");
+		return 1;
+	}
+
+	sigprocmask(SIG_SETMASK, NULL, &sigmask);
+	sigdelset(&sigmask, SIGUSR1);
+
+	p = fork();
+	switch (p) {
+	case -1:
+		printf("fork failed\n");
+		exit(2);
+	case 0:
+		close(pipe1[1]);
+		close(pipe2[0]);
+
+		ret = io_setup(1, &ctx);
+		if (ret) {
+			printf("child: io_setup failed\n");
+			return 1;
+		}
+
+		io_prep_poll(&iocb, pipe1[0], POLLIN);
+		ret = io_submit(ctx, 1, iocbs);
+		if (ret != 1) {
+			printf("child: io_submit failed\n");
+			return 1;
+		}
+
+		do {
+			if (getppid() != parent) {
+				printf("parent died\n");
+				exit(2);
+			}
+			ret = io_pgetevents(ctx, 1, 1, &ev, &to, &sigmask);
+		} while (ret == 0);
+
+		if (ret != -EINTR) {
+			printf("child: io_pgetevents did not set errno to EINTR\n");
+			return 1;
+		}
+
+		do {
+			errno = 0;
+			ret = write(pipe2[1], "foo", 3);
+		} while (ret == -1 && errno == EINTR);
+
+		exit(0);
+	default:
+		close(pipe1[0]);
+		close(pipe2[1]);
+
+		io_prep_poll(&iocb, pipe2[0], POLLIN);
+
+		ret = io_setup(1, &ctx);
+		if (ret) {
+			printf("child: io_setup failed\n");
+			return 1;
+		}
+
+		ret = io_submit(ctx, 1, iocbs);
+		if (ret != 1) {
+			printf("child: io_submit failed\n");
+			return 1;
+		}
+
+		kill(p, SIGUSR1);
+
+		ret = io_pgetevents(ctx, 1, 1, &ev, NULL, &sigmask);
+		if (ret < 0) {
+			printf("parent: io_pgetevents failed\n");
+			return 1;
+		}
+		if (ret != 1) {
+			printf("parent: io_pgetevents did not report event\n");
+			return 1;
+		}
+		if (ev.obj != &iocb) {
+			printf("parent: io_pgetevents reports wrong fd\n");
+			return 1;
+		}
+		if (ev.res != POLLIN) {
+			printf("parent: io_pgetevents did not report readable fd\n");
+			return 1;
+		}
+
+		return 0;
+	}
+}
-- 
2.14.2