[LTP] [PATCH 1/7] Refactor input01 test
Andrea Cervesato
andrea.cervesato@suse.de
Mon Nov 25 13:18:57 CET 2024
From: Andrea Cervesato <andrea.cervesato@suse.com>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
testcases/kernel/input/Makefile | 5 +-
testcases/kernel/input/input01.c | 205 ++++++++--------------------------
testcases/kernel/input/input_common.h | 97 ++++++++++++++++
3 files changed, 148 insertions(+), 159 deletions(-)
diff --git a/testcases/kernel/input/Makefile b/testcases/kernel/input/Makefile
index 032254444e1a1e5d53e3299dfe5d7e4cba6a5162..e686005c69da8b83d954da754b2e5db93ae89da7 100644
--- a/testcases/kernel/input/Makefile
+++ b/testcases/kernel/input/Makefile
@@ -3,10 +3,13 @@
top_srcdir ?= ../../..
+LTPLIBS = uinput
+
include $(top_srcdir)/include/mk/testcases.mk
FILTER_OUT_MAKE_TARGETS := input_helper
+input01: LDLIBS += -lltpuinput
include $(top_srcdir)/include/mk/generic_leaf_target.mk
-$(MAKE_TARGETS): %: input_helper.o
+input02 input03 input04 input05 input06: %: input_helper.o
diff --git a/testcases/kernel/input/input01.c b/testcases/kernel/input/input01.c
index 95db3f43f37f361db2691beb0d077626e81b6368..0872204111b81fd19a1525ef7f099e8ddead9658 100644
--- a/testcases/kernel/input/input01.c
+++ b/testcases/kernel/input/input01.c
@@ -1,187 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2015 Cedric Hnyda <chnyda@suse.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 would 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; if not, write the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Copyright (C) 2024 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
*/
- /*
- * Create a virtual device (mouse), send events to /dev/uinput
- * and check that the events are well received in /dev/input/eventX
- */
-
-#include <linux/input.h>
-
-#include "input_helper.h"
-#include "test.h"
-#include "safe_macros.h"
-#include "lapi/fcntl.h"
-
-#define NB_TEST 20
+/*\
+ * [Description]
+ *
+ * Verify that /dev/input/eventX receive events sent from a virtual device,
+ * that in our case is a mouse.
+ */
-static void setup(void);
-static void send_events(void);
-static int verify_data(struct input_event *iev, int nb);
-static int check_events(void);
-static void cleanup(void);
+#include "input_common.h"
-static int fd;
-static int fd2;
+#define NUM_EVENTS 20
+#define MOVE_X 10
+#define MOVE_Y 1
-char *TCID = "input01";
+static int fd_send = -1;
+static int fd_recv = -1;
-int main(int ac, char **av)
+static void run(void)
{
- int lc;
- int pid;
-
- tst_parse_opts(ac, av, NULL, NULL);
-
- setup();
-
- for (lc = 0; TEST_LOOPING(lc); ++lc) {
- pid = tst_fork();
-
- switch (pid) {
- case 0:
- send_events();
- exit(0);
- case -1:
- tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
- default:
- if (check_events())
- tst_resm(TFAIL, "Wrong data read from eventX");
- else
- tst_resm(TPASS, "Data received from eventX");
- break;
- }
-
- SAFE_WAITPID(NULL, pid, NULL, 0);
- }
+ struct input_event iev[3];
- cleanup();
- tst_exit();
-}
+ tst_res(TINFO, "Sending relative move: (%i, %i)", MOVE_X, MOVE_Y);
-static void setup(void)
-{
- tst_require_root();
-
- fd = open_uinput();
- setup_mouse_events(fd);
- create_device(fd);
-
- fd2 = open_device();
-}
-
-static void send_events(void)
-{
- int nb;
-
- for (nb = 0; nb < NB_TEST; ++nb) {
- send_rel_move(fd, 10, 1);
+ for (int i = 0; i < NUM_EVENTS; i++) {
+ send_relative_move(fd_send, MOVE_X, MOVE_Y);
usleep(1000);
}
-}
-static int check_events(void)
-{
- int nb, rd;
- unsigned int i;
- struct input_event iev[64];
-
- nb = 0;
+ tst_res(TINFO, "Reading events back");
- while (nb < NB_TEST * 3) {
- rd = read(fd2, iev, sizeof(iev));
+ for (int i = 0; i < NUM_EVENTS; i++) {
+ SAFE_READ(0, fd_recv, iev, 3 * sizeof(struct input_event));
- if (rd < 0)
- tst_brkm(TBROK | TERRNO, cleanup, "read()");
+ TST_EXP_EQ_LI(iev[0].type, EV_REL);
+ TST_EXP_EQ_LI(iev[0].code, REL_X);
+ TST_EXP_EQ_LI(iev[0].value, MOVE_X);
- if (rd == 0 || rd % sizeof(struct input_event)) {
- tst_resm(TINFO, "read() returned unexpected %i", rd);
- return 1;
- }
+ TST_EXP_EQ_LI(iev[1].type, EV_REL);
+ TST_EXP_EQ_LI(iev[1].code, REL_Y);
+ TST_EXP_EQ_LI(iev[1].value, MOVE_Y);
- for (i = 0; i < rd / sizeof(struct input_event); i++) {
- if (verify_data(&iev[i], nb++))
- return 1;
- }
+ TST_EXP_EQ_LI(iev[2].type, EV_SYN);
+ TST_EXP_EQ_LI(iev[2].code, 0);
+ TST_EXP_EQ_LI(iev[2].value, 0);
}
-
- return 0;
}
-static int verify_data(struct input_event *iev, int nb)
+static void setup(void)
{
- if (nb % 3 == 0) {
- if (iev->type != EV_REL) {
- tst_resm(TINFO,
- "%i: Unexpected event type %i expected %i",
- nb, iev->type, EV_REL);
- return 1;
- }
-
- if (iev->code != REL_X)
- return 1;
-
- if (iev->value != 10)
- return 1;
-
- return 0;
- }
-
- if (nb % 3 == 1) {
- if (iev->type != EV_REL) {
- tst_resm(TINFO,
- "%i: Unexpected event type %i expected %i",
- nb, iev->type, EV_REL);
- return 1;
- }
+ fd_send = open_uinput();
+ setup_mouse_events(fd_send);
+ create_input_device(fd_send);
- if (iev->code != REL_Y)
- return 1;
-
- if (iev->value != 1)
- return 1;
-
- return 0;
- }
-
- if (nb % 3 == 2) {
- if (iev->type != EV_SYN) {
- tst_resm(TINFO,
- "%i: Unexpected event type %i expected %i",
- nb, iev->type, EV_SYN);
- return 1;
- }
-
- if (iev->code != 0)
- return 1;
-
- if (iev->value != 0)
- return 1;
-
- return 0;
- }
- return 1;
+ fd_recv = open_event_device();
}
static void cleanup(void)
{
- if (fd2 > 0 && close(fd2))
- tst_resm(TWARN | TERRNO, "close(fd2)");
+ if (fd_send != -1)
+ destroy_input_device(fd_send);
- destroy_device(fd);
+ if (fd_recv != -1)
+ SAFE_CLOSE(fd_recv);
}
+
+static struct tst_test test = {
+ .test_all = run,
+ .setup = setup,
+ .cleanup = cleanup,
+ .needs_root = 1,
+};
diff --git a/testcases/kernel/input/input_common.h b/testcases/kernel/input/input_common.h
new file mode 100644
index 0000000000000000000000000000000000000000..0ac1624b3042f0bd14f063db76189dfc18d84674
--- /dev/null
+++ b/testcases/kernel/input/input_common.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2024 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+#ifndef INPUT_COMMON_H__
+#define INPUT_COMMON_H__
+
+#include <linux/input.h>
+#include <poll.h>
+
+#include "tst_test.h"
+#include "tst_uinput.h"
+
+static inline int open_event_device(void)
+{
+ int fd;
+ char path[1024];
+ char *device;
+ char *handlers;
+
+ memset(path, 0, sizeof(path));
+
+ handlers = get_input_field_value('H');
+ device = strtok(handlers, " ");
+
+ while (device) {
+ if (strstr(device, "event") != NULL) {
+ memset(path, 0, sizeof(path));
+ snprintf(path, sizeof(path), "/dev/input/%s", device);
+
+ if (!access(path, F_OK)) {
+ tst_res(TINFO, "Found event device: %s", path);
+ break;
+ }
+ }
+
+ device = strtok(NULL, " ");
+ }
+
+ free(handlers);
+
+ if (path[0] == '\0')
+ tst_brk(TBROK, "Can't find event device");
+
+ fd = SAFE_OPEN(path, O_RDONLY);
+
+ return fd;
+}
+
+static inline void send_event(
+ const int fd, const int event,
+ const int code, const int value)
+{
+ struct input_event ev = {
+ .type = event,
+ .code = code,
+ .value = value,
+ };
+
+ SAFE_WRITE(SAFE_WRITE_ALL, fd, &ev, sizeof(ev));
+}
+
+static inline void send_relative_move(const int fd, const int x, const int y)
+{
+ send_event(fd, EV_REL, REL_X, x);
+ send_event(fd, EV_REL, REL_Y, y);
+ send_event(fd, EV_SYN, 0, 0);
+}
+
+static inline void verify_no_events_queued(const int fd_recv)
+{
+ int num_bytes;
+ int num_events;
+ struct input_event ev;
+ struct pollfd fds = {
+ .fd = fd_recv,
+ .events = POLLIN
+ };
+
+ num_events = poll(&fds, 1, 30);
+
+ TST_EXP_EQ_LI(num_events, 0);
+ if (!num_events)
+ return;
+
+ num_bytes = SAFE_READ(0, fd_recv, &ev, sizeof(ev));
+ if (!num_bytes)
+ return;
+
+ tst_res(TFAIL, "Received unexpected event: "
+ "type=%i, code=%i, value=%i",
+ ev.type,
+ ev.code,
+ ev.value);
+}
+#endif
--
2.43.0
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