linux-kernel - [PATCH 1/2] Kconfig: Allow disabling of CONFIG

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:	Thu, 14 Jul 2011 13:34:52 -0700
From:	Mike Waychison <mikew@...gle.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Mike Waychison <mikew@...gle.com>
Subject: [PATCH 1/2] Kconfig:  Allow disabling of CONFIG_DEVPORT

It would be useful to build kernels with disabled support of /dev/port
for systems where we do not want to allow an administrator to access IO
ports directly.

To do so however, CONFIG_DEVPORT needs to be user-selectable.  Give this
configuration option a name and help description.

Google-Bug-Id: 3177114
Signed-off-by: Mike Waychison <mikew@...gle.com>
---
 drivers/char/Kconfig |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 49502bc..12503f1 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -593,10 +593,15 @@ config TELCLOCK
 	  controlling the behavior of this hardware.
 
 config DEVPORT
-	bool
+	bool "Support for /dev/port"
 	depends on !M68K
 	depends on ISA || PCI
 	default y
+	help
+	  Enabling this option allows for access to the /dev/port
+	  character device.  This device maps IO ports onto a file
+	  interface, so that users with sufficient privilege can read
+	  and write to IO ports directly.  If unsure, say yes.
 
 source "drivers/s390/char/Kconfig"
 
-- 
1.7.3.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/