* [LTP] [PATCH 2/3] lapi: Add epoll_pwait_supported() and epoll_pwait2_supported() check
2021-07-27 12:45 [LTP] [PATCH 0/3] epoll_pwait: Add test variants for epoll_pwait2 in epoll_pwait01 Xie Ziyao
2021-07-27 12:45 ` [LTP] [PATCH 1/3] tst_process_state: Add tst_process_state_wait2 to newlib Xie Ziyao
@ 2021-07-27 12:45 ` Xie Ziyao
2021-07-27 14:53 ` Cyril Hrubis
2021-07-27 12:45 ` [LTP] [PATCH 3/3] epoll_pwait: Add test variants for epoll_pwait2 in epoll_pwait01 Xie Ziyao
2 siblings, 1 reply; 7+ messages in thread
From: Xie Ziyao @ 2021-07-27 12:45 UTC (permalink / raw)
To: ltp
Add the function of checking whether epoll_pwait or epoll_pwait2 is supported.
Signed-off-by: Xie Ziyao <xieziyao@huawei.com>
---
include/lapi/epoll.h | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/include/lapi/epoll.h b/include/lapi/epoll.h
index e5b4387f1..fc068ae20 100644
--- a/include/lapi/epoll.h
+++ b/include/lapi/epoll.h
@@ -14,18 +14,32 @@
#define EPOLL_CLOEXEC 02000000
#endif
+static inline void epoll_pwait_supported(void)
+{
+ /* allow the tests to fail early */
+ tst_syscall(__NR_epoll_pwait);
+}
+
#ifndef HAVE_EPOLL_PWAIT
-int epoll_pwait(int epfd, struct epoll_event *events, int maxevents,
- int timeout, const sigset_t *sigmask)
+static inline int epoll_pwait(int epfd, struct epoll_event *events,
+ int maxevents, int timeout,
+ const sigset_t *sigmask)
{
return tst_syscall(__NR_epoll_pwait, epfd, events, maxevents,
timeout, sigmask, _NSIG / 8);
}
#endif
+static inline void epoll_pwait2_supported(void)
+{
+ /* allow the tests to fail early */
+ tst_syscall(__NR_epoll_pwait2);
+}
+
#ifndef HAVE_EPOLL_PWAIT2
-int epoll_pwait2(int epfd, struct epoll_event *events, int maxevents,
- const struct timespec *timeout, const sigset_t *sigmask)
+static inline int epoll_pwait2(int epfd, struct epoll_event *events,
+ int maxevents, const struct timespec *timeout,
+ const sigset_t *sigmask)
{
if (timeout == NULL)
return tst_syscall(__NR_epoll_pwait2, epfd, events, maxevents,
--
2.17.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [LTP] [PATCH 3/3] epoll_pwait: Add test variants for epoll_pwait2 in epoll_pwait01
2021-07-27 12:45 [LTP] [PATCH 0/3] epoll_pwait: Add test variants for epoll_pwait2 in epoll_pwait01 Xie Ziyao
2021-07-27 12:45 ` [LTP] [PATCH 1/3] tst_process_state: Add tst_process_state_wait2 to newlib Xie Ziyao
2021-07-27 12:45 ` [LTP] [PATCH 2/3] lapi: Add epoll_pwait_supported() and epoll_pwait2_supported() check Xie Ziyao
@ 2021-07-27 12:45 ` Xie Ziyao
2021-07-27 12:56 ` Xie Ziyao
2 siblings, 1 reply; 7+ messages in thread
From: Xie Ziyao @ 2021-07-27 12:45 UTC (permalink / raw)
To: ltp
Add test variants to switch between epoll_pwait and epoll_pwait2.
Signed-off-by: Xie Ziyao <xieziyao@huawei.com>
---
.../syscalls/epoll_pwait/epoll_pwait01.c | 234 ++++++------------
1 file changed, 80 insertions(+), 154 deletions(-)
diff --git a/testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c b/testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c
index 1f08112ad..08e36ee92 100644
--- a/testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c
+++ b/testcases/kernel/syscalls/epoll_pwait/epoll_pwait01.c
@@ -1,202 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2016 Fujitsu Ltd.
* Author: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.
+ * Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
*/
-/*
- * Description:
- * Basic test for epoll_pwait(2).
- * 1) epoll_pwait(2) with sigmask argument allows the caller to
- * safely wait until either a file descriptor becomes ready
- * or the timeout expires.
- * 2) epoll_pwait(2) with NULL sigmask argument fails if
- * interrupted by a signal handler, epoll_pwait(2) should
- * return -1 and set errno to EINTR.
+/*\
+ * [Description]
+ *
+ * Basic test for epoll_pwait and epoll_pwait2. Verify that,
+ *
+ * 1. epoll_pwait or epoll_pwait2 with sigmask argument allows the caller to
+ * safely wait until either a file descriptor becomes ready or the timeout
+ * expires.
+ * 2. epoll_pwait or epoll_pwait2 with NULL sigmask argument fails if
+ * interrupted by a signal handler. It should return -1 and set errno to EINTR.
*/
+#include <stdlib.h>
#include <sys/epoll.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-
-#include "test.h"
-#include "epoll_pwait.h"
-#include "safe_macros.h"
-char *TCID = "epoll_pwait01";
-int TST_TOTAL = 2;
+#include "tst_test.h"
+#include "epoll_pwait_var.h"
-static int epfd, fds[2];
+static int efd, sfd[2];
+static struct epoll_event e;
static sigset_t signalset;
-static struct epoll_event epevs;
static struct sigaction sa;
-static void setup(void);
-static void verify_sigmask(void);
-static void verify_nonsigmask(void);
-static void sighandler(int sig LTP_ATTRIBUTE_UNUSED);
-static void do_test(sigset_t *);
-static void do_child(void);
-static void cleanup(void);
-
-int main(int ac, char **av)
-{
- int lc;
-
- tst_parse_opts(ac, av, NULL, NULL);
-
- setup();
-
- for (lc = 0; TEST_LOOPING(lc); lc++) {
- tst_count = 0;
-
- do_test(&signalset);
- do_test(NULL);
- }
-
- cleanup();
- tst_exit();
-}
-
-static void setup(void)
-{
- if ((tst_kvercmp(2, 6, 19)) < 0) {
- tst_brkm(TCONF, NULL, "This test can only run on kernels "
- "that are 2.6.19 or higher");
- }
-
- tst_sig(FORK, DEF_HANDLER, cleanup);
-
- TEST_PAUSE;
-
- if (sigemptyset(&signalset) == -1)
- tst_brkm(TFAIL | TERRNO, NULL, "sigemptyset() failed");
-
- if (sigaddset(&signalset, SIGUSR1) == -1)
- tst_brkm(TFAIL | TERRNO, NULL, "sigaddset() failed");
-
- sa.sa_flags = 0;
- sa.sa_handler = sighandler;
- if (sigemptyset(&sa.sa_mask) == -1)
- tst_brkm(TFAIL | TERRNO, NULL, "sigemptyset() failed");
-
- if (sigaction(SIGUSR1, &sa, NULL) == -1)
- tst_brkm(TFAIL | TERRNO, NULL, "sigaction() failed");
-
- SAFE_PIPE(NULL, fds);
-
- epfd = epoll_create(1);
- if (epfd == -1) {
- tst_brkm(TBROK | TERRNO, cleanup,
- "failed to create epoll instance");
- }
-
- epevs.events = EPOLLIN;
- epevs.data.fd = fds[0];
-
- if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[0], &epevs) == -1) {
- tst_brkm(TBROK | TERRNO, cleanup,
- "failed to register epoll target");
- }
-}
+static void sighandler(int sig LTP_ATTRIBUTE_UNUSED) {}
static void verify_sigmask(void)
{
- if (TEST_RETURN == -1) {
- tst_resm(TFAIL | TTERRNO, "epoll_pwait() failed");
- return;
- }
+ TEST(do_epoll_pwait(efd, &e, 1, -1, &signalset));
- if (TEST_RETURN != 1) {
- tst_resm(TFAIL, "epoll_pwait() returned %li, expected 1",
- TEST_RETURN);
+ if (TST_RET != 1) {
+ tst_res(TFAIL, "do_epoll_pwait() returned %li, expected 1",
+ TST_RET);
return;
}
- tst_resm(TPASS, "epoll_pwait(sigmask) blocked signal");
+ tst_res(TPASS, "do_epoll_pwait() with sigmask blocked signal");
}
static void verify_nonsigmask(void)
{
- if (TEST_RETURN != -1) {
- tst_resm(TFAIL, "epoll_wait() succeeded unexpectedly");
- return;
- }
-
- if (TEST_ERRNO == EINTR) {
- tst_resm(TPASS | TTERRNO, "epoll_wait() failed as expected");
- } else {
- tst_resm(TFAIL | TTERRNO, "epoll_wait() failed unexpectedly, "
- "expected EINTR");
- }
+ TST_EXP_FAIL(do_epoll_pwait(efd, &e, 1, -1, NULL), EINTR,
+ "do_epoll_pwait() without sigmask");
}
-static void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
+static void epoll_pwait_support(void)
{
-
+ if (tst_variant == 0)
+ epoll_pwait_supported();
+ else
+ epoll_pwait2_supported();
}
-static void do_test(sigset_t *sigmask)
+static void (*testcase_list[])(void) = {verify_sigmask, verify_nonsigmask};
+
+static void run(unsigned int n)
{
- pid_t cpid;
char b;
- cpid = tst_fork();
- if (cpid < 0)
- tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
+ epoll_pwait_support();
- if (cpid == 0)
- do_child();
+ if (!SAFE_FORK()) {
+ if (tst_process_state_wait2(getppid(), 'S') != 0)
+ tst_brk(TBROK | TERRNO,
+ "failed to wait for parent process's state");
- TEST(epoll_pwait(epfd, &epevs, 1, -1, sigmask));
-
- if (sigmask != NULL)
- verify_sigmask();
- else
- verify_nonsigmask();
+ SAFE_KILL(getppid(), SIGUSR1);
+ usleep(10000);
+ SAFE_WRITE(1, sfd[1], "w", 1);
+ exit(0);
+ }
- SAFE_READ(cleanup, 1, fds[0], &b, 1);
+ testcase_list[n]();
- tst_record_childstatus(cleanup, cpid);
+ SAFE_READ(1, sfd[0], &b, 1);
+ tst_reap_children();
}
-static void do_child(void)
+static void setup(void)
{
- if (tst_process_state_wait2(getppid(), 'S') != 0) {
- tst_brkm(TBROK | TERRNO, cleanup,
- "failed to wait for parent process's state");
- }
+ SAFE_SIGEMPTYSET(&signalset);
+ SAFE_SIGADDSET(&signalset, SIGUSR1);
- SAFE_KILL(cleanup, getppid(), SIGUSR1);
- usleep(10000);
- SAFE_WRITE(cleanup, 1, fds[1], "w", 1);
+ sa.sa_flags = 0;
+ sa.sa_handler = sighandler;
+ SAFE_SIGEMPTYSET(&sa.sa_mask);
+ SAFE_SIGACTION(SIGUSR1, &sa, NULL);
+
+ epoll_pwait_info();
- cleanup();
- tst_exit();
+ SAFE_SOCKETPAIR(AF_UNIX, SOCK_STREAM, 0, sfd);
+
+ efd = epoll_create(1);
+ if (efd == -1)
+ tst_brk(TBROK | TERRNO, "epoll_create()");
+
+ e.events = EPOLLIN;
+ if (epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e))
+ tst_brk(TBROK | TERRNO, "epoll_clt(..., EPOLL_CTL_ADD, ...)");
}
static void cleanup(void)
{
- if (epfd > 0 && close(epfd))
- tst_resm(TWARN | TERRNO, "failed to close epfd");
+ if (efd > 0)
+ SAFE_CLOSE(efd);
- if (close(fds[0]))
- tst_resm(TWARN | TERRNO, "close(fds[0]) failed");
+ if (sfd[0] > 0)
+ SAFE_CLOSE(sfd[0]);
- if (close(fds[1]))
- tst_resm(TWARN | TERRNO, "close(fds[1]) failed");
+ if (sfd[1] > 0)
+ SAFE_CLOSE(sfd[1]);
}
+
+static struct tst_test test = {
+ .test = run,
+ .setup = setup,
+ .cleanup = cleanup,
+ .forks_child = 1,
+ .min_kver = "2.6.19",
+ .test_variants = TEST_VARIANTS,
+ .tcnt = ARRAY_SIZE(testcase_list),
+};
--
2.17.1
^ permalink raw reply related [flat|nested] 7+ messages in thread