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Tests/Kernel: Add tests for verifying proper loop device support

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Liav A 2024-02-10 15:37:34 +02:00 committed by Andrew Kaster
parent 0734de9f9a
commit ec6e7077fe
3 changed files with 60 additions and 0 deletions
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4
Meta/build-root-filesystem.sh
View file

@ -110,6 +110,10 @@ if [ -f mnt/usr/Tests/Kernel/TestProcFSWrite ]; then
chown 0:0 mnt/usr/Tests/Kernel/TestProcFSWrite
chmod 4755 mnt/usr/Tests/Kernel/TestProcFSWrite
fi
if [ -f mnt/usr/Tests/Kernel/TestLoopDevice ]; then
chown 0:0 mnt/usr/Tests/Kernel/TestLoopDevice
chmod 4755 mnt/usr/Tests/Kernel/TestLoopDevice
fi
if [ -f mnt/res/kernel.map ]; then
chmod 0400 mnt/res/kernel.map

1
Tests/Kernel/CMakeLists.txt
View file

@ -50,6 +50,7 @@ set(LIBTEST_BASED_SOURCES
TestKernelFilePermissions.cpp
TestKernelPledge.cpp
TestKernelUnveil.cpp
TestLoopDevice.cpp
TestMemoryDeviceMmap.cpp
TestMunMap.cpp
TestProcFS.cpp

55
Tests/Kernel/TestLoopDevice.cpp Normal file
View file

@ -0,0 +1,55 @@
/*
* Copyright (c) 2024, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteString.h>
#include <AK/StringView.h>
#include <Kernel/API/Ioctl.h>
#include <LibTest/TestCase.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
static int open_loop_device(int loop_device_index)
{
auto loop_device_path = ByteString::formatted("/dev/loop/{}", loop_device_index);
return open(loop_device_path.view().characters_without_null_termination(), O_RDONLY);
}
TEST_CASE(create_attach_and_destory_loop_device)
{
constexpr char const* test_path = "/tmp/create_attach_and_destory_loop_device_test";
int devctl_fd = open("/dev/devctl", O_RDONLY);
VERIFY(devctl_fd >= 0);
auto cleanup_devctl_fd_guard = ScopeGuard([&] {
close(devctl_fd);
});
u8 buf[0x1000];
memset(buf, 0, sizeof(buf));
int fd = open(test_path, O_RDWR | O_CREAT, 0644);
VERIFY(fd >= 0);
auto cleanup_fd_guard = ScopeGuard([&] {
close(fd);
unlink(test_path);
});
auto rc = write(fd, buf, sizeof(buf));
VERIFY(rc == sizeof(buf));
int value = fd;
auto create_result = ioctl(devctl_fd, DEVCTL_CREATE_LOOP_DEVICE, &value);
EXPECT_EQ(create_result, 0);
auto loop_device_index = value;
auto loop_device_fd_or_error = open_loop_device(loop_device_index);
EXPECT(loop_device_fd_or_error >= 0);
auto cleanup_loop_device_fd_guard = ScopeGuard([&] {
close(loop_device_fd_or_error);
});
auto destroy_result = ioctl(devctl_fd, DEVCTL_DESTROY_LOOP_DEVICE, &loop_device_index);
EXPECT_EQ(destroy_result, 0);
}