From: Gao Xiang <hsiangkao@linux.alibaba.com>
Date: Wed, 11 Dec 2024 09:27:04 +0000 (+0800)
Subject: erofs-utils: mkfs: add `-U <clear|random>` support
X-Git-Tag: accepted/tizen/unified/20250610.081809~82
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=91e74ac65045a778bf7e23f418685c0b36779edd;p=platform%2Fupstream%2Ferofs-utils.git

erofs-utils: mkfs: add `-U <clear|random>` support

To match `mke2fs`.

Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241211092704.4008111-1-hsiangkao@linux.alibaba.com
---

diff --git a/man/mkfs.erofs.1 b/man/mkfs.erofs.1
index abdd9b9..0093839 100644
--- a/man/mkfs.erofs.1
+++ b/man/mkfs.erofs.1
@@ -110,6 +110,17 @@ Set the universally unique identifier (UUID) of the filesystem to
 .IR UUID .
 The format of the UUID is a series of hex digits separated by hyphens,
 like this: "c1b9d5a2-f162-11cf-9ece-0020afc76f16".
+The
+.I UUID
+parameter may also be one of the following:
+.RS 1.2i
+.TP
+.I clear
+clear the file system UUID
+.TP
+.I random
+generate a new randomly-generated UUID
+.RE
 .TP
 .B \-\-all-root
 Make all files owned by root.
diff --git a/mkfs/main.c b/mkfs/main.c
index d422787..17b1f46 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -617,7 +617,12 @@ static int mkfs_parse_options_cfg(int argc, char *argv[])
 			has_timestamp = true;
 			break;
 		case 'U':
-			if (erofs_uuid_parse(optarg, fixeduuid)) {
+			if (!strcmp(optarg, "clear")) {
+				memset(fixeduuid, 0, 16);
+			} else if (!strcmp(optarg, "random")) {
+				valid_fixeduuid = false;
+				break;
+			} else if (erofs_uuid_parse(optarg, fixeduuid)) {
 				erofs_err("invalid UUID %s", optarg);
 				return -EINVAL;
 			}