[LTP] [PATCH v3 5/5] kernel/uevent: Add uevent03
Cyril Hrubis
chrubis@suse.cz
Mon Aug 26 16:01:24 CEST 2019
This time we create a virtual input device, a mouse, and validate the result.
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
---
runtest/uevent | 1 +
testcases/kernel/uevents/.gitignore | 1 +
testcases/kernel/uevents/Makefile | 4 +
testcases/kernel/uevents/uevent03.c | 248 ++++++++++++++++++++++++++++
4 files changed, 254 insertions(+)
create mode 100644 testcases/kernel/uevents/uevent03.c
diff --git a/runtest/uevent b/runtest/uevent
index 30b1114a4..0b59c8723 100644
--- a/runtest/uevent
+++ b/runtest/uevent
@@ -1,2 +1,3 @@
uevent01 uevent01
uevent02 uevent02
+uevent03 uevent03
diff --git a/testcases/kernel/uevents/.gitignore b/testcases/kernel/uevents/.gitignore
index 0afc95534..7818f7308 100644
--- a/testcases/kernel/uevents/.gitignore
+++ b/testcases/kernel/uevents/.gitignore
@@ -1,2 +1,3 @@
uevent01
uevent02
+uevent03
diff --git a/testcases/kernel/uevents/Makefile b/testcases/kernel/uevents/Makefile
index cba769739..d5ceb0719 100644
--- a/testcases/kernel/uevents/Makefile
+++ b/testcases/kernel/uevents/Makefile
@@ -2,5 +2,9 @@
top_srcdir ?= ../../..
+LTPLIBS = ltpuinput
+
+uevent03: LDLIBS += -lltpuinput
+
include $(top_srcdir)/include/mk/testcases.mk
include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/uevents/uevent03.c b/testcases/kernel/uevents/uevent03.c
new file mode 100644
index 000000000..991737e20
--- /dev/null
+++ b/testcases/kernel/uevents/uevent03.c
@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2019 Cyril Hrubis <chrubis@suse.cz>
+ */
+
+/*
+ * Very simple uevent netlink socket test.
+ *
+ * We fork a child that listens for a kernel events while parents creates and
+ * removes a virtual mouse which produces add and remove event for the device
+ * itself and for two event handlers called eventX and mouseY.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <sys/sysmacros.h>
+
+#include <linux/uinput.h>
+
+#include "tst_test.h"
+#include "tst_uinput.h"
+#include "uevent.h"
+
+static int mouse_fd;
+
+static void create_uinput_mouse(void)
+{
+ mouse_fd = open_uinput();
+ setup_mouse_events(mouse_fd);
+ create_input_device(mouse_fd);
+}
+
+static void destroy_uinput_mouse(void)
+{
+ destroy_input_device(mouse_fd);
+}
+
+static void get_minor_major(char *device, char *minor, char *major, size_t buf_sizes)
+{
+ char path[1024];
+ struct stat stbuf;
+
+ snprintf(path, sizeof(path), "/dev/input/%s", device);
+
+ SAFE_STAT(path, &stbuf);
+
+ snprintf(major, buf_sizes, "MAJOR=%i", major(stbuf.st_rdev));
+ snprintf(minor, buf_sizes, "MINOR=%i", minor(stbuf.st_rdev));
+}
+
+#define MINOR_MAJOR_SIZE 32
+
+static void verify_uevent(void)
+{
+ int pid, fd;
+ char sysname[64];
+ char add_msg[1024];
+ char rem_msg[1024];
+ char dev_path[1024];
+ char add_msg_event1[1024];
+ char rem_msg_event1[1024];
+ char dev_path_event1[1024];
+ char add_msg_event2[1024];
+ char rem_msg_event2[1024];
+ char dev_path_event2[1024];
+ char dev_name1[1024];
+ char dev_name2[1024];
+
+ char minor_event1[MINOR_MAJOR_SIZE];
+ char minor_event2[MINOR_MAJOR_SIZE];
+ char major_event1[MINOR_MAJOR_SIZE];
+ char major_event2[MINOR_MAJOR_SIZE];
+
+ char *handlers, *handler1, *handler2;
+
+ struct uevent_desc add = {
+ .msg = add_msg,
+ .value_cnt = 7,
+ .values = (const char*[]) {
+ "ACTION=add",
+ dev_path,
+ "SUBSYSTEM=input",
+ "NAME=\"virtual-device-ltp\"",
+ "PROP=0",
+ "EV=7",
+ "REL=3",
+ }
+ };
+
+ struct uevent_desc add_event1 = {
+ .msg = add_msg_event1,
+ .value_cnt = 6,
+ .values = (const char*[]) {
+ "ACTION=add",
+ "SUBSYSTEM=input",
+ dev_name1,
+ dev_path_event1,
+ minor_event1,
+ major_event1,
+ }
+ };
+
+ struct uevent_desc add_event2 = {
+ .msg = add_msg_event2,
+ .value_cnt = 6,
+ .values = (const char*[]) {
+ "ACTION=add",
+ "SUBSYSTEM=input",
+ dev_name2,
+ dev_path_event2,
+ minor_event2,
+ major_event2,
+ }
+ };
+
+ struct uevent_desc rem_event1 = {
+ .msg = rem_msg_event1,
+ .value_cnt = 6,
+ .values = (const char*[]) {
+ "ACTION=remove",
+ "SUBSYSTEM=input",
+ dev_name1,
+ dev_path_event1,
+ minor_event1,
+ major_event1,
+ }
+ };
+
+ struct uevent_desc rem_event2 = {
+ .msg = rem_msg_event2,
+ .value_cnt = 6,
+ .values = (const char*[]) {
+ "ACTION=remove",
+ "SUBSYSTEM=input",
+ dev_name2,
+ dev_path_event2,
+ minor_event2,
+ major_event2,
+ }
+ };
+
+ struct uevent_desc rem = {
+ .msg = rem_msg,
+ .value_cnt = 7,
+ .values = (const char*[]) {
+ "ACTION=remove",
+ dev_path,
+ "SUBSYSTEM=input",
+ "NAME=\"virtual-device-ltp\"",
+ "PROP=0",
+ "EV=7",
+ "REL=3",
+ }
+ };
+
+ const struct uevent_desc *const uevents[] = {
+ &add,
+ &add_event1,
+ &add_event2,
+ &rem_event1,
+ &rem_event2,
+ &rem,
+ NULL
+ };
+
+ fd = open_uevent_netlink();
+
+ create_uinput_mouse();
+
+ SAFE_IOCTL(mouse_fd, UI_GET_SYSNAME(sizeof(sysname)), sysname);
+ handlers = get_input_handlers();
+
+ tst_res(TINFO, "Sysname: %s", sysname);
+ tst_res(TINFO, "Handlers: %s", handlers);
+
+ handler1 = strtok(handlers, " ");
+ if (!handler1)
+ tst_brk(TBROK, "Expected mouseX and eventY handlers!");
+
+ get_minor_major(handler1, minor_event1, major_event1, MINOR_MAJOR_SIZE);
+
+ handler2 = strtok(NULL, " ");
+ if (!handler2)
+ tst_brk(TBROK, "Expected mouseX and eventY handlers!");
+
+ get_minor_major(handler2, minor_event2, major_event2, MINOR_MAJOR_SIZE);
+
+ destroy_uinput_mouse();
+
+ snprintf(add_msg, sizeof(add_msg),
+ "add@/devices/virtual/input/%s", sysname);
+
+ snprintf(rem_msg, sizeof(rem_msg),
+ "remove@/devices/virtual/input/%s", sysname);
+
+ snprintf(dev_path, sizeof(dev_path),
+ "DEVPATH=/devices/virtual/input/%s", sysname);
+
+
+ snprintf(add_msg_event1, sizeof(add_msg_event1),
+ "add@/devices/virtual/input/%s/%s", sysname, handler1);
+
+ snprintf(rem_msg_event1, sizeof(rem_msg_event1),
+ "remove@/devices/virtual/input/%s/%s", sysname, handler1);
+
+ snprintf(dev_path_event1, sizeof(dev_path_event1),
+ "DEVPATH=/devices/virtual/input/%s/%s", sysname, handler1);
+
+ snprintf(dev_name1, sizeof(dev_name1),
+ "DEVNAME=input/%s", handler1);
+
+
+ snprintf(add_msg_event2, sizeof(add_msg_event2),
+ "add@/devices/virtual/input/%s/%s", sysname, handler2);
+
+ snprintf(rem_msg_event2, sizeof(rem_msg_event2),
+ "remove@/devices/virtual/input/%s/%s", sysname, handler2);
+
+ snprintf(dev_path_event2, sizeof(dev_path_event2),
+ "DEVPATH=/devices/virtual/input/%s/%s", sysname, handler2);
+
+ snprintf(dev_name2, sizeof(dev_name2),
+ "DEVNAME=input/%s", handler2);
+
+ free(handlers);
+
+ pid = SAFE_FORK();
+ if (!pid) {
+ wait_for_uevents(fd, uevents);
+ exit(0);
+ }
+
+ SAFE_CLOSE(fd);
+ wait_for_pid(pid);
+}
+
+static struct tst_test test = {
+ .test_all = verify_uevent,
+ .forks_child = 1,
+ .needs_tmpdir = 1,
+ .needs_checkpoints = 1,
+ .needs_drivers = (const char *const[]) {
+ "uinput",
+ NULL
+ },
+ .needs_root = 1,
+};
--
2.21.0
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