linux-ext4 - [PATCH 2/2] tune2fs: Fix conversion of quota files

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, 20 Aug 2021 21:46:56 +0200
From:   Jan Kara <jack@...e.cz>
To:     Ted Tso <tytso@....edu>
Cc:     <linux-ext4@...r.kernel.org>, Jan Kara <jack@...e.cz>
Subject: [PATCH 2/2] tune2fs: Fix conversion of quota files

When tune2fs is enabling quota feature, it looks for old-style quota
files and tries to transfer limits stored in these files into newly
created hidded quota files. However the code doing the transfer setups
the quota scan wrongly and instead of transferring limits we transfer
usage. So not only quota limits are lost (at least they can still be
recovered from the old quota files) but also usage information may be
wrong if the accounting in e2fsprogs does not exactly match the
accounting in quota-tools (which is actually the case). Fix the setup of
the quota scan.

Signed-off-by: Jan Kara <jack@...e.cz>
---
 lib/support/mkquota.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/support/mkquota.c b/lib/support/mkquota.c
index fbc3833aee98..34ab632fb81c 100644
--- a/lib/support/mkquota.c
+++ b/lib/support/mkquota.c
@@ -569,14 +569,14 @@ static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
  */
 static errcode_t quota_read_all_dquots(struct quota_handle *qh,
                                        quota_ctx_t qctx,
-				       int update_limits EXT2FS_ATTR((unused)))
+				       int update_limits)
 {
 	struct scan_dquots_data scan_data;

 	scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
 	scan_data.check_consistency = 0;
-	scan_data.update_limits = 0;
-	scan_data.update_usage = 1;
+	scan_data.update_limits = update_limits;
+	scan_data.update_usage = 0;

 	return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
 }
-- 
2.26.2