1 /*
2 * qtest vmcoreinfo test case
3 *
4 * Copyright Red Hat. 2025.
5 *
6 * Authors:
7 * Ani Sinha <anisinha@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 */
12
13 #include "qemu/osdep.h"
14 #include "qemu/units.h"
15 #include "libqos/libqos-pc.h"
16 #include "libqtest.h"
17 #include "standard-headers/linux/qemu_fw_cfg.h"
18 #include "libqos/fw_cfg.h"
19 #include "qemu/bswap.h"
20 #include "hw/misc/vmcoreinfo.h"
21
test_vmcoreinfo_write_basic(void)22 static void test_vmcoreinfo_write_basic(void)
23 {
24 QFWCFG *fw_cfg;
25 QOSState *qs;
26 FWCfgVMCoreInfo info;
27 size_t filesize;
28 uint16_t guest_format;
29 uint16_t host_format;
30 uint32_t size;
31 uint64_t paddr;
32
33 qs = qtest_pc_boot("-device vmcoreinfo");
34 fw_cfg = pc_fw_cfg_init(qs->qts);
35
36 memset(&info, 0 , sizeof(info));
37 /* read vmcoreinfo and read back the host format */
38 filesize = qfw_cfg_read_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME,
39 &info, sizeof(info));
40 g_assert_cmpint(filesize, ==, sizeof(info));
41
42 host_format = le16_to_cpu(info.host_format);
43 g_assert_cmpint(host_format, ==, FW_CFG_VMCOREINFO_FORMAT_ELF);
44
45 memset(&info, 0 , sizeof(info));
46 info.guest_format = cpu_to_le16(FW_CFG_VMCOREINFO_FORMAT_ELF);
47 info.size = cpu_to_le32(1 * MiB);
48 info.paddr = cpu_to_le64(0xffffff00);
49 info.host_format = cpu_to_le16(host_format);
50
51 /* write the values to the host */
52 filesize = qfw_cfg_write_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME,
53 &info, sizeof(info));
54 g_assert_cmpint(filesize, ==, sizeof(info));
55
56 memset(&info, 0 , sizeof(info));
57
58 /* now read back the values we wrote and compare that they are the same */
59 filesize = qfw_cfg_read_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME,
60 &info, sizeof(info));
61 g_assert_cmpint(filesize, ==, sizeof(info));
62
63 size = le32_to_cpu(info.size);
64 paddr = le64_to_cpu(info.paddr);
65 guest_format = le16_to_cpu(info.guest_format);
66
67 g_assert_cmpint(size, ==, 1 * MiB);
68 g_assert_cmpint(paddr, ==, 0xffffff00);
69 g_assert_cmpint(guest_format, ==, FW_CFG_VMCOREINFO_FORMAT_ELF);
70
71 pc_fw_cfg_uninit(fw_cfg);
72 qtest_shutdown(qs);
73 }
74
main(int argc,char ** argv)75 int main(int argc, char **argv)
76 {
77 const char *arch = qtest_get_arch();
78
79 g_test_init(&argc, &argv, NULL);
80
81 if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
82 /* skip for non-x86 */
83 exit(EXIT_SUCCESS);
84 }
85
86 qtest_add_func("vmcoreinfo/basic-write",
87 test_vmcoreinfo_write_basic);
88
89 return g_test_run();
90 }
91