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Message-Id: <20180104080325.14716-7-hch@lst.de>
Date: Thu, 4 Jan 2018 09:03:25 +0100
From: Christoph Hellwig <hch@....de>
To: linux-aio@...ck.org
Cc: Avi Kivity <avi@...lladb.com>, linux-fsdevel@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] add test for aio poll and io_pgetevents
Signed-off-by: Christoph Hellwig <hch@....de>
---
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
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