linux-kernel - [RFC PATCH mtd-utils 001/110] mkfs.ubifs: Clear direct

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 7 Jun 2024 12:24:26 +0800
From: Zhihao Cheng <chengzhihao1@...wei.com>
To: <richard@....at>, <david.oberhollenzer@...ma-star.at>,
	<miquel.raynal@...tlin.com>, <yi.zhang@...wei.com>, <xiangyang3@...wei.com>,
	<huangxiaojia2@...wei.com>
CC: <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH mtd-utils 001/110] mkfs.ubifs: Clear direct_write property when closing target

Direct writing is not allowd on an UBI volume, unless the volume is set
with direct_write property. The open_target sets direct_write property,
don't forget to clear direct_write property for UBI volume when closing
target.

Fixes: a48340c335dab ("mkfs.ubifs: use libubi to format UBI volume")
Signed-off-by: Zhihao Cheng <chengzhihao1@...wei.com>
---
 ubifs-utils/mkfs.ubifs/mkfs.ubifs.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
index 42a47f83..5ca01512 100644
--- a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
+++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
@@ -2832,7 +2832,7 @@ static int open_target(void)
 			return sys_err_msg("cannot open the UBI volume '%s'",
 					   output);
 		if (ubi_set_property(out_fd, UBI_VOL_PROP_DIRECT_WRITE, 1))
-			return sys_err_msg("ubi_set_property failed");
+			return sys_err_msg("ubi_set_property(set direct_write) failed");
 
 		if (!yes && check_volume_empty()) {
 			if (!prompt("UBI volume is not empty.  Format anyways?", false))
@@ -2859,10 +2859,14 @@ static int open_target(void)
  */
 static int close_target(void)
 {
+	if (out_fd >= 0) {
+		if (ubi && ubi_set_property(out_fd, UBI_VOL_PROP_DIRECT_WRITE, 0))
+			return sys_err_msg("ubi_set_property(clear direct_write) failed");
+		if (close(out_fd) == -1)
+			return sys_err_msg("cannot close the target '%s'", output);
+	}
 	if (ubi)
 		libubi_close(ubi);
-	if (out_fd >= 0 && close(out_fd) == -1)
-		return sys_err_msg("cannot close the target '%s'", output);
 	if (output)
 		free(output);
 	return 0;
-- 
2.13.6