@@ -3,3 +3,4 @@ epoll_ctl02
epoll_ctl03
epoll_ctl04
epoll_ctl05
+epoll_ctl06
new file mode 100644
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that epoll receives EPOLLRDHUP event when we hang a reading
+ * half-socket we are polling on.
+ */
+
+#include <poll.h>
+#include <sys/epoll.h>
+#include "tst_test.h"
+
+static int sockfd;
+static int epfd;
+
+static void setup(void)
+{
+ sockfd = SAFE_SOCKET(AF_INET, SOCK_STREAM, 0);
+}
+
+static void cleanup(void)
+{
+ if (epfd > 0)
+ SAFE_CLOSE(epfd);
+
+ if (sockfd > 0)
+ SAFE_CLOSE(sockfd);
+}
+
+static void run(void)
+{
+ int res;
+ pid_t pid;
+ struct epoll_event evt_req;
+ struct epoll_event evt_rec;
+
+ pid = SAFE_FORK();
+ if (pid != 0) {
+ TST_CHECKPOINT_WAIT(0);
+
+ tst_res(TINFO, "Hang reading half-socket");
+ shutdown(sockfd, SHUT_RD);
+
+ TST_CHECKPOINT_WAKE(0);
+
+ return;
+ }
+
+ epfd = epoll_create1(0);
+ if (epfd == -1)
+ tst_brk(TBROK | TERRNO, "fail to create epoll instance");
+
+ tst_res(TINFO, "Looking at EPOLLRDHUP events");
+
+ evt_req.events = EPOLLRDHUP;
+ res = epoll_ctl(epfd, EPOLL_CTL_ADD, sockfd, &evt_req);
+ if (res == -1)
+ tst_brk(TBROK | TERRNO, "epoll_ctl failure");
+
+ TST_CHECKPOINT_WAKE_AND_WAIT(0);
+
+ res = epoll_wait(epfd, &evt_rec, 1, 2000);
+ if (res <= 0) {
+ tst_res(TFAIL | TERRNO, "epoll_wait() returned %i", res);
+ return;
+ }
+
+ if (evt_rec.events & evt_req.events)
+ tst_res(TPASS, "Received EPOLLRDHUP");
+ else
+ tst_res(TFAIL, "EPOLLRDHUP has not been received");
+
+ SAFE_CLOSE(epfd);
+}
+
+static struct tst_test test = {
+ .setup = setup,
+ .cleanup = cleanup,
+ .test_all = run,
+ .forks_child = 1,
+ .needs_checkpoints = 1,
+};
The epoll_ctl06 test verifies that EPOLLRDHUP event is correctly recognised by epoll. Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com> --- .../kernel/syscalls/epoll_ctl/.gitignore | 1 + .../kernel/syscalls/epoll_ctl/epoll_ctl06.c | 86 +++++++++++++++++++ 2 files changed, 87 insertions(+) create mode 100644 testcases/kernel/syscalls/epoll_ctl/epoll_ctl06.c