From 182a32427b50aed5812833e3ecb8a6078160a501 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com>

Date: Tue, 7 Jan 2014 15:00:22 +0100

Subject: [PATCH] gpt-auto-generator: skip nonexistent devices

The devices we work with have eMMC chips for storage. The chips

provide four "hardware" partitions.  The first is /dev/mmcblk0, it

takes almost whole space and holds a GPT with several real partitions

(/dev/mmcblk0p?). Then there are three block devices (mmcblk0boot0,

mmcblk0boot1, rpmb) that are part of the same hardware as mmcblk0 that

are presented by the kernel as children of the latter. That relationship

makes gpt-auto-generator try to peek them but since they are not GPT

partitions blkid_do_safeprobe() returns -2 making verify_gpt_parition()

function return -ENODEV.

---

 src/gpt-auto-generator/gpt-auto-generator.c | 3 +++

 1 file changed, 3 insertions(+)

diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c

index 25440e7..0e8e959 100644

--- a/src/gpt-auto-generator/gpt-auto-generator.c

+++ b/src/gpt-auto-generator/gpt-auto-generator.c

@@ -298,6 +298,9 @@ static int enumerate_partitions(struct udev *udev, dev_t dev) {

                 r = verify_gpt_partition(node, &type_id, &nr, &fstype);

                 if (r < 0) {

+                        /* skip child devices which are not detected properly */

+                        if (r == -ENODEV)

+                                continue;

                         log_error("Failed to verify GPT partition %s: %s",

                                   node, strerror(-r));

                         return r;