From: Willem de Bruijn <will...@google.com>
Code coverage for the epoll_pwait2 syscall.
epoll62: Repeat basic test epoll1, but exercising the new syscall.
epoll63: Pass a timespec and exercise the timeout wakeup path.
Signed-off-by: Willem de Bruijn <will...@google.com>
---
.../filesystems/epoll/epoll_wakeup_test.c | 70 +++++++++++++++++++
1 file changed, 70 insertions(+)
diff --git a/tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c
b/tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c
index 8f82f99f7748..4d5656978746 100644
--- a/tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c
+++ b/tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
+#include <asm/unistd.h>
#include <poll.h>
#include <unistd.h>
#include <assert.h>
@@ -21,6 +22,18 @@ struct epoll_mtcontext
pthread_t waiter;
};
+#ifndef __NR_epoll_pwait2
+#define __NR_epoll_pwait2 -1
+#endif
+
+static inline int sys_epoll_pwait2(int fd, struct epoll_event *events,
+ int maxevents,
+ const struct timespec *timeout,
+ const sigset_t *sigset)
+{
+ return syscall(__NR_epoll_pwait2, fd, events, maxevents, timeout,
sigset);
+}
+
static void signal_handler(int signum)
{
}
@@ -3377,4 +3390,61 @@ TEST(epoll61)
close(ctx.evfd);
}
+/* Equivalent to basic test epoll1, but exercising epoll_pwait2. */
+TEST(epoll62)
+{
+ int efd;
+ int sfd[2];
+ struct epoll_event e;
+
+ ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
+
+ efd = epoll_create(1);
+ ASSERT_GE(efd, 0);
+
+ e.events = EPOLLIN;
+ ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
+
+ ASSERT_EQ(write(sfd[1], "w", 1), 1);
+
+ EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL), 1);
+ EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL), 1);
+
+ close(efd);
+ close(sfd[0]);
+ close(sfd[1]);
+}
+
+/* Epoll_pwait2 basic timeout test. */
+TEST(epoll63)
+{
+ const int cfg_delay_ms = 10;
+ unsigned long long tdiff;
+ struct timespec ts;
+ int efd;
+ int sfd[2];
+ struct epoll_event e;
+
+ ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
+
+ efd = epoll_create(1);
+ ASSERT_GE(efd, 0);
+
+ e.events = EPOLLIN;
+ ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
+
+ ts.tv_sec = 0;
+ ts.tv_nsec = cfg_delay_ms * 1000 * 1000;
+
+ tdiff = msecs();
+ EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, &ts, NULL), 0);
+ tdiff = msecs() - tdiff;
+
+ EXPECT_GE(tdiff, cfg_delay_ms);
+
+ close(efd);
+ close(sfd[0]);
+ close(sfd[1]);
+}
+
TEST_HARNESS_MAIN
--
2.29.2.454.gaff20da3a2-goog
