[PATCH] erofs-utils: fsck: fix issues related to --extract=X

[Igor Ostapenko <igoreisberg@gmail.com>]

From: Igor Eisberg <igoreisberg@gmail.com>

Fix "--[no-]preserve[-owner/-perms] must be used..." error always thrown
for superuser when fsck used without --extract=X, due to default values
for preserve_owner/preserve_perms being already pre-set to true,
as if the --preserve option was explicitly given by the user.

Signed-off-by: Igor Ostapenko <igoreisberg@gmail.com>
---
 fsck/main.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/fsck/main.c b/fsck/main.c
index 5667f2a..9e3756d 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -95,7 +95,7 @@ static void erofsfsck_print_version(void)
 static int erofsfsck_parse_options_cfg(int argc, char **argv)
 {
 	int opt, ret;
-	bool no_preserve_owner = false, no_preserve_perms = false;
+	bool has_opt_preserve = false;
 
 	while ((opt = getopt_long(argc, argv, "Vd:p",
 				  long_options, NULL)) != -1) {
@@ -154,27 +154,27 @@ static int erofsfsck_parse_options_cfg(int argc, char **argv)
 			break;
 		case 6:
 			fsckcfg.preserve_owner = fsckcfg.preserve_perms = true;
-			no_preserve_owner = no_preserve_perms = false;
+			has_opt_preserve = true;
 			break;
 		case 7:
 			fsckcfg.preserve_owner = true;
-			no_preserve_owner = false;
+			has_opt_preserve = true;
 			break;
 		case 8:
 			fsckcfg.preserve_perms = true;
-			no_preserve_perms = false;
+			has_opt_preserve = true;
 			break;
 		case 9:
 			fsckcfg.preserve_owner = fsckcfg.preserve_perms = false;
-			no_preserve_owner = no_preserve_perms = true;
+			has_opt_preserve = true;
 			break;
 		case 10:
 			fsckcfg.preserve_owner = false;
-			no_preserve_owner = true;
+			has_opt_preserve = true;
 			break;
 		case 11:
 			fsckcfg.preserve_perms = false;
-			no_preserve_perms = true;
+			has_opt_preserve = true;
 			break;
 		default:
 			return -EINVAL;
@@ -195,8 +195,7 @@ static int erofsfsck_parse_options_cfg(int argc, char **argv)
 			erofs_err("--overwrite must be used together with --extract=X");
 			return -EINVAL;
 		}
-		if (fsckcfg.preserve_owner || fsckcfg.preserve_perms ||
-			  no_preserve_owner || no_preserve_perms) {
+		if (has_opt_preserve) {
 			erofs_err("--[no-]preserve[-owner/-perms] must be used together with --extract=X");
 			return -EINVAL;
 		}
-- 
2.30.2