linux-kernel - [PATCH 1/2] efivarfs: Update inode modification time for successful writes

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 for Android: free password hash cracker in your pocket

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

Message-Id: <20200528194905.690-2-tony.luck@intel.com>
Date:   Thu, 28 May 2020 12:49:04 -0700
From:   Tony Luck <tony.luck@...el.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Tony Luck <tony.luck@...el.com>,
        Lennart Poettering <mzxreary@...inter.de>,
        Matthew Garrett <matthew.garrett@...ula.com>,
        Jeremy Kerr <jk@...abs.org>, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] efivarfs: Update inode modification time for successful writes

Some applications want to be able to see when EFI variables
have been updated.

Update the modification time for successful writes.

Reported-by: Lennart Poettering <mzxreary@...inter.de>
Signed-off-by: Tony Luck <tony.luck@...el.com>
---
 fs/efivarfs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c
index e9e27a271af0..4b8bc4560d70 100644
--- a/fs/efivarfs/file.c
+++ b/fs/efivarfs/file.c
@@ -51,6 +51,7 @@ static ssize_t efivarfs_file_write(struct file *file,
 	} else {
 		inode_lock(inode);
 		i_size_write(inode, datasize + sizeof(attributes));
+		inode->i_mtime = current_time(inode);
 		inode_unlock(inode);
 	}
 
-- 
2.21.1