From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZFemO-0001SU-1x for barebox@lists.infradead.org; Thu, 16 Jul 2015 08:44:33 +0000 From: Michael Olbrich Date: Thu, 16 Jul 2015 10:43:53 +0200 Message-Id: <1437036236-19096-5-git-send-email-m.olbrich@pengutronix.de> In-Reply-To: <1437036236-19096-1-git-send-email-m.olbrich@pengutronix.de> References: <1437036236-19096-1-git-send-email-m.olbrich@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 4/7] efi: add helper to get the GPT partition UUID for a device To: barebox@lists.infradead.org Cc: Michael Olbrich Signed-off-by: Michael Olbrich --- common/efi-devicepath.c | 31 +++++++++++++++++++++++++++++++ include/efi.h | 1 + 2 files changed, 32 insertions(+) diff --git a/common/efi-devicepath.c b/common/efi-devicepath.c index a53c6d2e8b9b..fdb86afc8eca 100644 --- a/common/efi-devicepath.c +++ b/common/efi-devicepath.c @@ -1383,3 +1383,34 @@ u8 device_path_to_type(struct efi_device_path *dev_path) return device_path_type(dev_path); } + +char *device_path_to_partuuid(struct efi_device_path *dev_path) +{ + struct efi_device_path *dev_path_node; + struct harddrive_device_path *hd; + char *str = NULL;; + + dev_path = unpack_device_path(dev_path); + + for (dev_path_node = dev_path; !is_device_path_end(dev_path_node); + dev_path_node = next_device_path_node(dev_path_node)) { + + if (device_path_type(dev_path_node) != MEDIA_DEVICE_PATH) + continue; + + if (dev_path_node->sub_type != MEDIA_HARDDRIVE_DP) + continue; + + hd = (struct harddrive_device_path *)dev_path_node; + + if (hd->signature_type != SIGNATURE_TYPE_GUID) + continue; + + str = malloc(sizeof("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")+1); + sprintf(str, "%pU)", (efi_guid_t *)&(hd->signature[0])); + break; + } + + return str; +} + diff --git a/include/efi.h b/include/efi.h index e79a407bc2c8..b6ee42b3fd49 100644 --- a/include/efi.h +++ b/include/efi.h @@ -624,6 +624,7 @@ static inline int efi_compare_guid(efi_guid_t *a, efi_guid_t *b) char *device_path_to_str(struct efi_device_path *dev_path); u8 device_path_to_type(struct efi_device_path *dev_path); +char *device_path_to_partuuid(struct efi_device_path *dev_path); const char *efi_guid_string(efi_guid_t *g); -- 2.1.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox