linux-kernel - [RESEND PATCH v3 0/2] VT: Add ability to get font requirements

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]

Message-ID: <cover.1712053848.git.legion@kernel.org>
Date: Tue,  2 Apr 2024 12:32:55 +0200
From: Alexey Gladkov <legion@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	kbd@...ts.linux.dev,
	linux-api@...r.kernel.org,
	linux-fbdev@...r.kernel.org,
	linux-serial@...r.kernel.org
Subject: [RESEND PATCH v3 0/2] VT: Add ability to get font requirements

We now have KD_FONT_OP_SET_TALL, but in fact such large fonts cannot be
loaded. No console driver supports tall fonts. Unfortunately, userspace
cannot distinguish the lack of support in the driver from errors in the
font itself. In all cases, EINVAL will be returned.

This patchset adds a separate ioctl to obtain the font parameters
supported by the console driver.

v3:
* Added the use of the in_range macro.
* Squashed the commits that add ioctl to console divers.

v2:
* Instead of the KDFONTOP extension, a new ioctl has been added to
  obtain font information.

Alexey Gladkov (2):
  VT: Add KDFONTINFO ioctl
  VT: Allow to get max font width and height

 drivers/tty/vt/vt.c                 | 24 ++++++++++++++++++++++++
 drivers/tty/vt/vt_ioctl.c           | 13 +++++++++++++
 drivers/video/console/newport_con.c | 21 +++++++++++++++++----
 drivers/video/console/sticon.c      | 25 +++++++++++++++++++++++--
 drivers/video/console/vgacon.c      | 21 ++++++++++++++++++++-
 drivers/video/fbdev/core/fbcon.c    | 22 +++++++++++++++++++++-
 include/linux/console.h             |  2 ++
 include/linux/vt_kern.h             |  1 +
 include/uapi/linux/kd.h             | 13 ++++++++++++-
 9 files changed, 133 insertions(+), 9 deletions(-)

-- 
2.44.0