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Allow overriding HwId data from the config file

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To use this on a immutable system like ChromeOS you can create a file
in /var/lib/fwupd/daemon.conf which is used as an override.
This commit is contained in:
Richard Hughes 2021-11-09 19:09:07 +00:00
parent 2c72b24978
commit 4f3e2c3a57
2 changed files with 48 additions and 0 deletions
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9
data/daemon.conf
View File

@ -48,3 +48,12 @@ IgnorePower=false
# Only support installing firmware signed with a trusted key
OnlyTrusted=true
# these are only required when the SMBIOS or Device Tree data is invalid or missing
#Manufacturer=
#ProductName=
#ProductSku=
#Family=
#EnclosureKind=
#BaseboardProduct=
#BaseboardManufacturer=

39
libfwupdplugin/fu-hwids.c
View File

@ -351,6 +351,41 @@ fu_hwids_convert_integer_cb(FuSmbios *smbios, guint8 type, guint8 offset, GError
return g_strdup_printf("%x", tmp);
}
static gboolean
fu_hwids_setup_overrides(FuHwids *self, GError **error)
{
g_autofree gchar *localstatedir = fu_common_get_path(FU_PATH_KIND_LOCALSTATEDIR_PKG);
g_autofree gchar *sysconfigdir = fu_common_get_path(FU_PATH_KIND_SYSCONFDIR_PKG);
g_autoptr(GKeyFile) kf = g_key_file_new();
g_autoptr(GPtrArray) fns = g_ptr_array_new_with_free_func(g_free);
g_autoptr(GPtrArray) keys = fu_hwids_get_keys(self);
/* per-system configuration and optional overrides */
g_ptr_array_add(fns, g_build_filename(sysconfigdir, "daemon.conf", NULL));
g_ptr_array_add(fns, g_build_filename(localstatedir, "daemon.conf", NULL));
for (guint i = 0; i < fns->len; i++) {
const gchar *fn = g_ptr_array_index(fns, i);
if (g_file_test(fn, G_FILE_TEST_EXISTS)) {
g_debug("loading HwId overrides from %s", fn);
if (!g_key_file_load_from_file(kf, fn, G_KEY_FILE_NONE, error))
return FALSE;
} else {
g_debug("not loading HwId overrides from %s", fn);
}
}
/* all keys are optional */
for (guint i = 0; i < keys->len; i++) {
const gchar *key = g_ptr_array_index(keys, i);
g_autofree gchar *value = g_key_file_get_string(kf, "fwupd", key, NULL);
if (value != NULL)
fu_hwids_add_smbios_override(self, key, value);
}
/* success */
return TRUE;
}
/**
* fu_hwids_setup:
* @self: a #FuHwids
@ -429,6 +464,10 @@ fu_hwids_setup(FuHwids *self, FuSmbios *smbios, GError **error)
g_return_val_if_fail(FU_IS_SMBIOS(smbios) || smbios == NULL, FALSE);
g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
/* override using a config file */
if (!fu_hwids_setup_overrides(self, error))
return FALSE;
/* get all DMI data */
for (guint i = 0; map[i].key != NULL; i++) {
const gchar *contents_hdr = NULL;