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Get the SMBIOS table on Windows

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Fixes https://github.com/fwupd/fwupd/issues/4253
This commit is contained in:
Richard Hughes 2022-02-07 10:40:57 +00:00
parent 97e6c1d7c2
commit 2fd4ea5ddc
1 changed files with 49 additions and 0 deletions
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49
libfwupdplugin/fu-smbios.c
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@ -11,6 +11,10 @@
#include <gio/gio.h>
#include <string.h>
#ifdef _WIN32
#include <sysinfoapi.h>
#endif
#include "fwupd-error.h"
#include "fu-common.h"
@ -788,6 +792,13 @@ fu_smbios_setup_from_path(FuSmbios *self, const gchar *path, GError **error)
return fu_smbios_setup_from_path_dmi(self, path, error);
}
#ifdef _WIN32
#define FU_SMBIOS_FT_SIG_ACPI 0x41435049
#define FU_SMBIOS_FT_SIG_FIRM 0x4649524D
#define FU_SMBIOS_FT_SIG_RSMB 0x52534D42
#define FU_SMBIOS_FT_RAW_OFFSET 0x08
#endif
/**
* fu_smbios_setup:
* @self: a #FuSmbios
@ -802,6 +813,43 @@ fu_smbios_setup_from_path(FuSmbios *self, const gchar *path, GError **error)
gboolean
fu_smbios_setup(FuSmbios *self, GError **error)
{
#ifdef _WIN32
gsize bufsz;
guint rc;
g_autofree guint8 *buf = NULL;
rc = GetSystemFirmwareTable(FU_SMBIOS_FT_SIG_RSMB, 0, 0, 0);
if (rc <= 0) {
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_INVALID_FILE,
"failed to access RSMB [%u]",
(guint)GetLastError());
return FALSE;
}
if (rc < FU_SMBIOS_FT_RAW_OFFSET || rc > 0x1000000) {
g_set_error_literal(error,
FWUPD_ERROR,
FWUPD_ERROR_INVALID_FILE,
"RSMB impossible size");
return FALSE;
}
bufsz = rc;
buf = g_malloc0(bufsz);
rc = GetSystemFirmwareTable(FU_SMBIOS_FT_SIG_RSMB, 0, buf, (DWORD)bufsz);
if (rc <= 0) {
g_set_error(error,
FWUPD_ERROR,
FWUPD_ERROR_INVALID_FILE,
"failed to read RSMB [%u]",
(guint)GetLastError());
return FALSE;
}
return fu_smbios_setup_from_data(self,
buf + FU_SMBIOS_FT_RAW_OFFSET,
bufsz - FU_SMBIOS_FT_RAW_OFFSET,
error);
#else
g_autofree gchar *path = NULL;
g_autofree gchar *path_dt = NULL;
g_autofree gchar *sysfsfwdir = NULL;
@ -847,6 +895,7 @@ fu_smbios_setup(FuSmbios *self, GError **error)
FWUPD_ERROR_INVALID_FILE,
"neither SMBIOS or DT found");
return FALSE;
#endif
}
static void