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32b9d8b0ae
Currently the 'nvram_template' entry is mandatory when parsing the
firmware descriptor based on flash. QEMU is extending the firmware
descriptor spec to make the 'nvram_template' optional, depending
on the value of a new 'mode' field:
- "split"
* "executable" contains read-only CODE
* "nvram_template" contains read-write VARS
- "combined"
* "executable" contains read-write CODE and VARs
* "nvram_template" not present
- "stateless"
* "executable" contains read-only CODE and VARs
* "nvram_template" not present
In the latter case, the guest OS can write vars but the
firmware will make no attempt to persist them, so any changes
will be lost at poweroff.
For now we parse this new 'mode' but discard any firmware
which is not 'mode=split' when matching for a domain.
In the tests we have a mixture of files with and without the
mode attribute.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
285 lines
9.1 KiB
C
285 lines
9.1 KiB
C
#include <config.h>
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#include <inttypes.h>
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#include "testutils.h"
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#include "virfilewrapper.h"
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#include "qemu/qemu_firmware.h"
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#include "configmake.h"
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#define VIR_FROM_THIS VIR_FROM_QEMU
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/* A very basic test. Parse given JSON firmware description into
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* an internal structure, format it back and compare with the
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* contents of the file (minus some keys that are not parsed).
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*/
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static int
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testParseFormatFW(const void *opaque)
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{
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const char *filename = opaque;
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g_autofree char *inpath = NULL;
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g_autofree char *outpath = NULL;
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g_autoptr(qemuFirmware) fw = NULL;
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g_autoptr(virJSONValue) json = NULL;
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g_autofree char *expected = NULL;
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g_autofree char *actual = NULL;
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g_autofree char *buf = NULL;
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inpath = g_strdup_printf("%s/qemufirmwaredata/%s", abs_srcdir, filename);
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outpath = g_strdup_printf("%s/qemufirmwaredata/out/%s", abs_srcdir, filename);
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if (!(fw = qemuFirmwareParse(inpath)))
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return -1;
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if (virFileExists(outpath)) {
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if (virFileReadAll(outpath,
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1024 * 1024, /* 1MiB */
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&buf) < 0)
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return -1;
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} else {
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if (virFileReadAll(inpath,
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1024 * 1024, /* 1MiB */
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&buf) < 0)
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return -1;
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}
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if (!(json = virJSONValueFromString(buf)))
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return -1;
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/* Description and tags are not parsed. */
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if (virJSONValueObjectRemoveKey(json, "description", NULL) < 0 ||
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virJSONValueObjectRemoveKey(json, "tags", NULL) < 0)
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return -1;
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if (!(expected = virJSONValueToString(json, true)))
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return -1;
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if (!(actual = qemuFirmwareFormat(fw)))
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return -1;
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return virTestCompareToString(expected, actual);
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}
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static int
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testFWPrecedence(const void *opaque G_GNUC_UNUSED)
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{
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g_autofree char *fakehome = NULL;
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g_auto(GStrv) fwList = NULL;
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const char *expected[] = {
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PREFIX "/share/qemu/firmware/40-bios.json",
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SYSCONFDIR "/qemu/firmware/40-ovmf-sb-keys.json",
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PREFIX "/share/qemu/firmware/45-ovmf-sev-stateless.json",
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PREFIX "/share/qemu/firmware/50-ovmf-sb-keys.json",
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PREFIX "/share/qemu/firmware/55-ovmf-sb-combined.json",
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PREFIX "/share/qemu/firmware/61-ovmf.json",
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PREFIX "/share/qemu/firmware/70-aavmf.json",
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NULL
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};
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const char **e;
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GStrv f;
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fakehome = g_strdup(abs_srcdir "/qemufirmwaredata/home/user/.config");
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g_setenv("XDG_CONFIG_HOME", fakehome, TRUE);
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if (qemuFirmwareFetchConfigs(&fwList, false) < 0)
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return -1;
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if (!fwList) {
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fprintf(stderr, "Expected a non-NULL result, but got a NULL result\n");
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return -1;
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}
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for (e = expected, f = fwList; *f || *e;) {
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if (STRNEQ_NULLABLE(*f, *e)) {
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fprintf(stderr,
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"Unexpected path. Expected %s got %s \n",
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NULLSTR(*e), NULLSTR(*f));
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return -1;
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}
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if (*f)
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f++;
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if (*e)
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e++;
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}
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return 0;
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}
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struct supportedData {
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const char *machine;
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virArch arch;
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bool secure;
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const char *fwlist;
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unsigned int *interfaces;
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size_t ninterfaces;
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};
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static int
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testSupportedFW(const void *opaque)
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{
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const struct supportedData *data = opaque;
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uint64_t actualInterfaces;
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uint64_t expectedInterfaces = 0;
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bool actualSecure;
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virFirmware **expFWs = NULL;
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size_t nexpFWs = 0;
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virFirmware **actFWs = NULL;
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size_t nactFWs = 0;
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size_t i;
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int ret = -1;
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for (i = 0; i < data->ninterfaces; i++)
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expectedInterfaces |= 1ULL << data->interfaces[i];
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if (virFirmwareParseList(data->fwlist, &expFWs, &nexpFWs) < 0) {
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fprintf(stderr, "Unable to parse list of expected FW paths\n");
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return -1;
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}
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/* virFirmwareParseList() expects to see pairs of paths: ${FW}:${NVRAM}.
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* Well, some images don't have a NVRAM store. In that case NULL was passed:
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* ${FW}:NULL. Now iterate over expected firmwares and fix this. */
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for (i = 0; i < nexpFWs; i++) {
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virFirmware *tmp = expFWs[i];
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if (STREQ(tmp->nvram, "NULL"))
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VIR_FREE(tmp->nvram);
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}
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if (qemuFirmwareGetSupported(data->machine, data->arch, false,
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&actualInterfaces, &actualSecure, &actFWs, &nactFWs) < 0) {
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fprintf(stderr, "Unable to get list of supported interfaces\n");
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goto cleanup;
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}
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if (actualInterfaces != expectedInterfaces) {
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fprintf(stderr,
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"Mismatch in supported interfaces. "
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"Expected 0x%" PRIx64 " got 0x%" PRIx64 "\n",
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expectedInterfaces, actualInterfaces);
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goto cleanup;
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}
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if (actualSecure != data->secure) {
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fprintf(stderr,
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"Mismatch in SMM requirement/support. "
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"Expected %d got %d\n",
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data->secure, actualSecure);
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goto cleanup;
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}
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for (i = 0; i < nactFWs; i++) {
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virFirmware *actFW = actFWs[i];
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virFirmware *expFW = NULL;
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if (i >= nexpFWs) {
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fprintf(stderr, "Unexpected FW image: %s NVRAM: %s\n",
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actFW->name, NULLSTR(actFW->nvram));
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goto cleanup;
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}
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expFW = expFWs[i];
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if (STRNEQ(actFW->name, expFW->name) ||
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STRNEQ_NULLABLE(actFW->nvram, expFW->nvram)) {
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fprintf(stderr, "Unexpected FW image: %s NVRAM: %s\n"
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"Expected: %s NVRAM: %s\n",
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actFW->name, NULLSTR(actFW->nvram),
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expFW->name, NULLSTR(expFW->nvram));
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goto cleanup;
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}
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}
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if (i < nexpFWs) {
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fprintf(stderr, "Expected FW image: %s NVRAM: %s got nothing\n",
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expFWs[i]->name, NULLSTR(expFWs[i]->nvram));
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goto cleanup;
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}
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ret = 0;
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cleanup:
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virFirmwareFreeList(actFWs, nactFWs);
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virFirmwareFreeList(expFWs, nexpFWs);
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return ret;
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}
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static int
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mymain(void)
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{
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int ret = 0;
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virFileWrapperAddPrefix(SYSCONFDIR "/qemu/firmware",
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abs_srcdir "/qemufirmwaredata/etc/qemu/firmware");
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virFileWrapperAddPrefix(PREFIX "/share/qemu/firmware",
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abs_srcdir "/qemufirmwaredata/usr/share/qemu/firmware");
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virFileWrapperAddPrefix("/home/user/.config/qemu/firmware",
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abs_srcdir "/qemufirmwaredata/home/user/.config/qemu/firmware");
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#define DO_PARSE_TEST(filename) \
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do { \
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if (virTestRun("QEMU FW " filename, \
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testParseFormatFW, filename) < 0) \
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ret = -1; \
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} while (0)
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DO_PARSE_TEST("usr/share/qemu/firmware/40-bios.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/45-ovmf-sev-stateless.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/50-ovmf-sb-keys.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/55-ovmf-sb-combined.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/60-ovmf-sb.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/61-ovmf.json");
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DO_PARSE_TEST("usr/share/qemu/firmware/70-aavmf.json");
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if (virTestRun("QEMU FW precedence test", testFWPrecedence, NULL) < 0)
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ret = -1;
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/* The @fwlist contains pairs of ${FW}:${NVRAM}. If there's
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* no NVRAM expected pass literal "NULL" and test fixes that
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* later. */
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#define DO_SUPPORTED_TEST(machine, arch, secure, fwlist, ...) \
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do { \
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unsigned int interfaces[] = {__VA_ARGS__}; \
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struct supportedData data = {machine, arch, secure, fwlist, \
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interfaces, G_N_ELEMENTS(interfaces)}; \
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if (virTestRun("QEMU FW SUPPORTED " machine " " #arch, \
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testSupportedFW, &data) < 0) \
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ret = -1; \
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} while (0)
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DO_SUPPORTED_TEST("pc-i440fx-3.1", VIR_ARCH_X86_64, false,
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"/usr/share/seabios/bios-256k.bin:NULL:"
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"/usr/share/OVMF/OVMF_CODE.fd:/usr/share/OVMF/OVMF_VARS.fd",
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VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS,
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VIR_DOMAIN_OS_DEF_FIRMWARE_EFI);
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DO_SUPPORTED_TEST("pc-i440fx-3.1", VIR_ARCH_I686, false,
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"/usr/share/seabios/bios-256k.bin:NULL",
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VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS);
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DO_SUPPORTED_TEST("pc-q35-3.1", VIR_ARCH_X86_64, true,
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"/usr/share/seabios/bios-256k.bin:NULL:"
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"/usr/share/OVMF/OVMF_CODE.secboot.fd:/usr/share/OVMF/OVMF_VARS.secboot.fd:"
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"/usr/share/OVMF/OVMF.sev.fd:NULL:"
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"/usr/share/OVMF/OVMF.secboot.fd:NULL:"
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"/usr/share/OVMF/OVMF_CODE.fd:/usr/share/OVMF/OVMF_VARS.fd",
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VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS,
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VIR_DOMAIN_OS_DEF_FIRMWARE_EFI);
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DO_SUPPORTED_TEST("pc-q35-3.1", VIR_ARCH_I686, false,
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"/usr/share/seabios/bios-256k.bin:NULL",
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VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS);
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DO_SUPPORTED_TEST("virt-3.1", VIR_ARCH_AARCH64, false,
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"/usr/share/AAVMF/AAVMF_CODE.fd:/usr/share/AAVMF/AAVMF_VARS.fd",
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VIR_DOMAIN_OS_DEF_FIRMWARE_EFI);
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virFileWrapperClearPrefixes();
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return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIR_TEST_MAIN(mymain)
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