358 lines
12 KiB
C
358 lines
12 KiB
C
/*
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* Test code for VMState
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*
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* Copyright (c) 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <glib.h>
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#include "qemu-common.h"
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#include "migration/migration.h"
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#include "migration/vmstate.h"
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#include "block/coroutine.h"
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char temp_file[] = "/tmp/vmst.test.XXXXXX";
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int temp_fd;
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/* Fake yield_until_fd_readable() implementation so we don't have to pull the
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* coroutine code as dependency.
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*/
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void yield_until_fd_readable(int fd)
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{
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fd_set fds;
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FD_ZERO(&fds);
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FD_SET(fd, &fds);
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select(fd + 1, &fds, NULL, NULL, NULL);
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}
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/* Duplicate temp_fd and seek to the beginning of the file */
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static int dup_temp_fd(bool truncate)
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{
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int fd = dup(temp_fd);
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lseek(fd, 0, SEEK_SET);
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if (truncate) {
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g_assert_cmpint(ftruncate(fd, 0), ==, 0);
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}
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return fd;
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}
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typedef struct TestSruct {
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uint32_t a, b, c, e;
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uint64_t d, f;
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bool skip_c_e;
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} TestStruct;
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static const VMStateDescription vmstate_simple = {
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.name = "test",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(a, TestStruct),
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VMSTATE_UINT32(b, TestStruct),
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VMSTATE_UINT32(c, TestStruct),
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VMSTATE_UINT64(d, TestStruct),
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VMSTATE_END_OF_LIST()
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}
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};
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static void test_simple_save(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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TestStruct obj = { .a = 1, .b = 2, .c = 3, .d = 4 };
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vmstate_save_state(fsave, &vmstate_simple, &obj);
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g_assert(!qemu_file_get_error(fsave));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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uint8_t expected[] = {
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0, 0, 0, 1, /* a */
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0, 0, 0, 2, /* b */
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0, 0, 0, 3, /* c */
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0, 0, 0, 0, 0, 0, 0, 4, /* d */
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};
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uint8_t result[sizeof(expected)];
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g_assert_cmpint(qemu_get_buffer(loading, result, sizeof(result)), ==,
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sizeof(result));
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(memcmp(result, expected, sizeof(result)), ==, 0);
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/* Must reach EOF */
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qemu_get_byte(loading);
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g_assert_cmpint(qemu_file_get_error(loading), ==, -EIO);
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qemu_fclose(loading);
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}
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static void test_simple_load(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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uint8_t buf[] = {
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0, 0, 0, 10, /* a */
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0, 0, 0, 20, /* b */
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0, 0, 0, 30, /* c */
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0, 0, 0, 0, 0, 0, 0, 40, /* d */
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QEMU_VM_EOF, /* just to ensure we won't get EOF reported prematurely */
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};
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qemu_put_buffer(fsave, buf, sizeof(buf));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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TestStruct obj;
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vmstate_load_state(loading, &vmstate_simple, &obj, 1);
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(obj.a, ==, 10);
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g_assert_cmpint(obj.b, ==, 20);
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g_assert_cmpint(obj.c, ==, 30);
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g_assert_cmpint(obj.d, ==, 40);
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qemu_fclose(loading);
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}
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static const VMStateDescription vmstate_versioned = {
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.name = "test",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_UINT32(a, TestStruct),
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VMSTATE_UINT32_V(b, TestStruct, 2), /* Versioned field in the middle, so
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* we catch bugs more easily.
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*/
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VMSTATE_UINT32(c, TestStruct),
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VMSTATE_UINT64(d, TestStruct),
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VMSTATE_UINT32_V(e, TestStruct, 2),
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VMSTATE_UINT64_V(f, TestStruct, 2),
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VMSTATE_END_OF_LIST()
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}
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};
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static void test_load_v1(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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uint8_t buf[] = {
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0, 0, 0, 10, /* a */
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0, 0, 0, 30, /* c */
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0, 0, 0, 0, 0, 0, 0, 40, /* d */
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QEMU_VM_EOF, /* just to ensure we won't get EOF reported prematurely */
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};
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qemu_put_buffer(fsave, buf, sizeof(buf));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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TestStruct obj = { .b = 200, .e = 500, .f = 600 };
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vmstate_load_state(loading, &vmstate_versioned, &obj, 1);
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(obj.a, ==, 10);
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g_assert_cmpint(obj.b, ==, 200);
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g_assert_cmpint(obj.c, ==, 30);
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g_assert_cmpint(obj.d, ==, 40);
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g_assert_cmpint(obj.e, ==, 500);
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g_assert_cmpint(obj.f, ==, 600);
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qemu_fclose(loading);
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}
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static void test_load_v2(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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uint8_t buf[] = {
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0, 0, 0, 10, /* a */
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0, 0, 0, 20, /* b */
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0, 0, 0, 30, /* c */
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0, 0, 0, 0, 0, 0, 0, 40, /* d */
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0, 0, 0, 50, /* e */
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0, 0, 0, 0, 0, 0, 0, 60, /* f */
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QEMU_VM_EOF, /* just to ensure we won't get EOF reported prematurely */
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};
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qemu_put_buffer(fsave, buf, sizeof(buf));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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TestStruct obj;
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vmstate_load_state(loading, &vmstate_versioned, &obj, 2);
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g_assert_cmpint(obj.a, ==, 10);
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g_assert_cmpint(obj.b, ==, 20);
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g_assert_cmpint(obj.c, ==, 30);
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g_assert_cmpint(obj.d, ==, 40);
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g_assert_cmpint(obj.e, ==, 50);
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g_assert_cmpint(obj.f, ==, 60);
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qemu_fclose(loading);
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}
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static bool test_skip(void *opaque, int version_id)
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{
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TestStruct *t = (TestStruct *)opaque;
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return !t->skip_c_e;
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}
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static const VMStateDescription vmstate_skipping = {
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.name = "test",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_UINT32(a, TestStruct),
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VMSTATE_UINT32(b, TestStruct),
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VMSTATE_UINT32_TEST(c, TestStruct, test_skip),
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VMSTATE_UINT64(d, TestStruct),
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VMSTATE_UINT32_TEST(e, TestStruct, test_skip),
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VMSTATE_UINT64_V(f, TestStruct, 2),
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VMSTATE_END_OF_LIST()
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}
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};
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static void test_save_noskip(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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TestStruct obj = { .a = 1, .b = 2, .c = 3, .d = 4, .e = 5, .f = 6,
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.skip_c_e = false };
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vmstate_save_state(fsave, &vmstate_skipping, &obj);
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g_assert(!qemu_file_get_error(fsave));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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uint8_t expected[] = {
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0, 0, 0, 1, /* a */
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0, 0, 0, 2, /* b */
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0, 0, 0, 3, /* c */
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0, 0, 0, 0, 0, 0, 0, 4, /* d */
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0, 0, 0, 5, /* e */
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0, 0, 0, 0, 0, 0, 0, 6, /* f */
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};
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uint8_t result[sizeof(expected)];
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g_assert_cmpint(qemu_get_buffer(loading, result, sizeof(result)), ==,
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sizeof(result));
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(memcmp(result, expected, sizeof(result)), ==, 0);
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/* Must reach EOF */
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qemu_get_byte(loading);
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g_assert_cmpint(qemu_file_get_error(loading), ==, -EIO);
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qemu_fclose(loading);
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}
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static void test_save_skip(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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TestStruct obj = { .a = 1, .b = 2, .c = 3, .d = 4, .e = 5, .f = 6,
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.skip_c_e = true };
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vmstate_save_state(fsave, &vmstate_skipping, &obj);
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g_assert(!qemu_file_get_error(fsave));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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uint8_t expected[] = {
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0, 0, 0, 1, /* a */
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0, 0, 0, 2, /* b */
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0, 0, 0, 0, 0, 0, 0, 4, /* d */
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0, 0, 0, 0, 0, 0, 0, 6, /* f */
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};
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uint8_t result[sizeof(expected)];
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g_assert_cmpint(qemu_get_buffer(loading, result, sizeof(result)), ==,
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sizeof(result));
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(memcmp(result, expected, sizeof(result)), ==, 0);
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/* Must reach EOF */
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qemu_get_byte(loading);
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g_assert_cmpint(qemu_file_get_error(loading), ==, -EIO);
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qemu_fclose(loading);
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}
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static void test_load_noskip(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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uint8_t buf[] = {
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0, 0, 0, 10, /* a */
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0, 0, 0, 20, /* b */
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0, 0, 0, 30, /* c */
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0, 0, 0, 0, 0, 0, 0, 40, /* d */
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0, 0, 0, 50, /* e */
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0, 0, 0, 0, 0, 0, 0, 60, /* f */
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QEMU_VM_EOF, /* just to ensure we won't get EOF reported prematurely */
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};
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qemu_put_buffer(fsave, buf, sizeof(buf));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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TestStruct obj = { .skip_c_e = false };
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vmstate_load_state(loading, &vmstate_skipping, &obj, 2);
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(obj.a, ==, 10);
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g_assert_cmpint(obj.b, ==, 20);
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g_assert_cmpint(obj.c, ==, 30);
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g_assert_cmpint(obj.d, ==, 40);
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g_assert_cmpint(obj.e, ==, 50);
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g_assert_cmpint(obj.f, ==, 60);
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qemu_fclose(loading);
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}
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static void test_load_skip(void)
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{
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QEMUFile *fsave = qemu_fdopen(dup_temp_fd(true), "wb");
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uint8_t buf[] = {
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0, 0, 0, 10, /* a */
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0, 0, 0, 20, /* b */
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0, 0, 0, 0, 0, 0, 0, 40, /* d */
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0, 0, 0, 0, 0, 0, 0, 60, /* f */
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QEMU_VM_EOF, /* just to ensure we won't get EOF reported prematurely */
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};
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qemu_put_buffer(fsave, buf, sizeof(buf));
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qemu_fclose(fsave);
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QEMUFile *loading = qemu_fdopen(dup_temp_fd(false), "rb");
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TestStruct obj = { .skip_c_e = true, .c = 300, .e = 500 };
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vmstate_load_state(loading, &vmstate_skipping, &obj, 2);
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g_assert(!qemu_file_get_error(loading));
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g_assert_cmpint(obj.a, ==, 10);
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g_assert_cmpint(obj.b, ==, 20);
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g_assert_cmpint(obj.c, ==, 300);
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g_assert_cmpint(obj.d, ==, 40);
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g_assert_cmpint(obj.e, ==, 500);
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g_assert_cmpint(obj.f, ==, 60);
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qemu_fclose(loading);
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}
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int main(int argc, char **argv)
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{
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temp_fd = mkstemp(temp_file);
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/vmstate/simple/save", test_simple_save);
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g_test_add_func("/vmstate/simple/load", test_simple_load);
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g_test_add_func("/vmstate/versioned/load/v1", test_load_v1);
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g_test_add_func("/vmstate/versioned/load/v2", test_load_v2);
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g_test_add_func("/vmstate/field_exists/load/noskip", test_load_noskip);
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g_test_add_func("/vmstate/field_exists/load/skip", test_load_skip);
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g_test_add_func("/vmstate/field_exists/save/noskip", test_save_noskip);
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g_test_add_func("/vmstate/field_exists/save/skip", test_save_skip);
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g_test_run();
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close(temp_fd);
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unlink(temp_file);
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return 0;
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}
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