cgpt: add support for managing GPT platform required partition bit

Bit 0 in the GPT partition attributes is defined to indicate whether a
partition is required by the platform. This CL adds the support for
managing this bit to cgpt.

BUG=b:70807006
BRANCH=None
TEST=Run unit tests.

Change-Id: Iaf87c828438b3df6730de502ae420fcf4c61277b
Reviewed-on: https://chromium-review.googlesource.com/902196
Commit-Ready: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/cgpt/cgpt_show.c b/cgpt/cgpt_show.c
index cd4a6136..60d73ec7 100644
--- a/cgpt/cgpt_show.c
+++ b/cgpt/cgpt_show.c
@@ -136,9 +136,9 @@ void EntryDetails(GptEntry *entry, uint32_t index, int raw) {
                       priority, tries, successful);
     }
 
-    if (entry->attrs.fields.system) {
+    if (entry->attrs.fields.required) {
       clen += snprintf(contents + clen, sizeof(contents) - clen,
-                       "system=%d ", entry->attrs.fields.system);
+                       "required=%d ", entry->attrs.fields.required);
       require(clen < sizeof(contents));
     }
 
@@ -230,6 +230,9 @@ static int GptShow(struct drive *drive, CgptShowParams *params) {
       case 'P':
         printf("%d\n", GetPriority(drive, ANY_VALID, index));
         break;
+      case 'R':
+        printf("%d\n", GetRequired(drive, ANY_VALID, index));
+        break;
       case 'B':
         printf("%d\n", GetLegacyBoot(drive, ANY_VALID, index));
         break;