linux-ext4 - [PATCH 0/4] fscrypt: remove checks for encryption key after file open

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-next>] [day] [month] [year] [list]

Date:   Mon, 22 May 2017 17:39:41 -0700
From:   Eric Biggers <ebiggers3@...il.com>
To:     linux-fscrypt@...r.kernel.org
Cc:     Theodore Ts'o <tytso@....edu>, Jaegeuk Kim <jaegeuk@...nel.org>,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, Eric Biggers <ebiggers@...gle.com>
Subject: [PATCH 0/4] fscrypt: remove checks for encryption key after file open

From: Eric Biggers <ebiggers@...gle.com>

This series removes checks for a regular file's encryption key that occur
after we've already opened the file.  We're guaranteed to already have
the key in such places, since we require it in ->open().  open() fails
with ENOKEY otherwise, and a file descriptor is never made available.

This pertains to regular files only.  (Directories can be opened with or
without their key.)

Eric Biggers (4):
  ext4: don't bother checking for encryption key in ->mmap()
  f2fs: don't bother checking for encryption key in ->mmap()
  ubifs: don't bother checking for encryption key in ->mmap()
  f2fs: don't bother checking for encryption key in ->write_iter()

 fs/ext4/file.c  |  7 -------
 fs/f2fs/file.c  | 13 -------------
 fs/ubifs/file.c |  9 ---------
 3 files changed, 29 deletions(-)

-- 
2.13.0.303.g4ebf302169-goog