[PATCH 5/5] cmd: Convert part uuid to use cmd_result

[Sean Anderson]

This is fairly straightforward. This allows
	part uuid mmc 0 foo
To be rewritten as
	env set foo $(part uuid mmc 0)
or even (if the variable is not required to be environmental)
	foo=$(part uuid mmc 0)

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
---

 cmd/part.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/cmd/part.c b/cmd/part.c
index 3395c17b89..97e70d79ff 100644
--- a/cmd/part.c
+++ b/cmd/part.c
@@ -19,9 +19,12 @@
 #include <config.h>
 #include <command.h>
 #include <env.h>
+#include <malloc.h>
 #include <part.h>
 #include <vsprintf.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 enum cmd_part_info {
 	CMD_PART_INFO_START = 0,
 	CMD_PART_INFO_SIZE,
@@ -43,12 +46,19 @@ static int do_part_uuid(int argc, char *const argv[])
 	if (part < 0)
 		return 1;
 
-	if (argc > 2)
+	if (argc > 2) {
 		env_set(argv[2], info.uuid);
-	else
-		printf("%s\n", info.uuid);
+	} else {
+		size_t result_size = sizeof(info.uuid) + 1;
 
-	return 0;
+		gd->cmd_result = malloc(result_size);
+		if (!gd->cmd_result)
+			return CMD_RET_FAILURE;
+
+		snprintf(gd->cmd_result, result_size, "%s\n", info.uuid);
+	}
+
+	return CMD_RET_SUCCESS;
 }
 
 static int do_part_list(int argc, char *const argv[])
-- 
2.30.1