diff options
Diffstat (limited to 'futility/updater_quirks.c')
| -rw-r--r-- | futility/updater_quirks.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/futility/updater_quirks.c b/futility/updater_quirks.c index e4056b05..b3dea936 100644 --- a/futility/updater_quirks.c +++ b/futility/updater_quirks.c @@ -476,10 +476,10 @@ void updater_register_quirks(struct updater_config *cfg) } /* - * Gets the default quirk config string for target image. + * Gets the default quirk config string from target image name. * Returns a string (in same format as --quirks) to load or NULL if no quirks. */ -const char * const updater_get_default_quirks(struct updater_config *cfg) +const char * const updater_get_model_quirks(struct updater_config *cfg) { const char *pattern = cfg->image.ro_version; int i; @@ -500,6 +500,51 @@ const char * const updater_get_default_quirks(struct updater_config *cfg) } /* + * Gets the quirk config string from target image CBFS. + * Returns a string (in same format as --quirks) to load or NULL if no quirks. + */ +char *updater_get_cbfs_quirks(struct updater_config *cfg) +{ + const char *entry_name = "updater_quirks"; + const char *cbfs_region = "FW_MAIN_A"; + struct firmware_section cbfs_section; + + /* Before invoking cbfstool, try to search for CBFS file name. */ + find_firmware_section(&cbfs_section, &cfg->image, cbfs_region); + if (!cbfs_section.size || !memmem(cbfs_section.data, cbfs_section.size, + entry_name, strlen(entry_name))) { + if (!cbfs_section.size) + VB2_DEBUG("Missing region: %s\n", cbfs_region); + else + VB2_DEBUG("Cannot find entry: %s\n", entry_name); + return NULL; + } + + const char *tmp_path = get_firmware_image_temp_file( + &cfg->image, &cfg->tempfiles); + uint8_t *data = NULL; + uint32_t size = 0; + + /* Although the name exists, it may not be a real file. */ + if (!cbfs_file_exists(tmp_path, cbfs_region, entry_name)) { + VB2_DEBUG("Found string '%s' but not a file.\n", entry_name); + return NULL; + } + + VB2_DEBUG("Found %s from CBFS %s\n", entry_name, cbfs_region); + tmp_path = cbfs_extract_file(tmp_path, cbfs_region, entry_name, + &cfg->tempfiles); + if (!tmp_path || + vb2_read_file(tmp_path, &data, &size) != VB2_SUCCESS) { + ERROR("Failed to read [%s] from CBFS [%s].\n", + entry_name, cbfs_region); + return NULL; + } + VB2_DEBUG("Got quirks (%u bytes): %s\n", size, data); + return (char *)data; +} + +/* * Overrides signature id if the device was shipped with known * special rootkey. */ |