From: Petr Vorel <pvorel@suse.cz>
To: Mimi Zohar <zohar@linux.ibm.com>
Cc: linux-kselftest@vger.kernel.org, Shuah Khan <shuah@kernel.org>,
linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 4/5] selftests/ima: kexec_file_load syscall test
Date: Thu, 28 Feb 2019 23:20:39 +0100 [thread overview]
Message-ID: <20190228222039.GD20335@dell5510> (raw)
In-Reply-To: <1551223620-11586-5-git-send-email-zohar@linux.ibm.com>
Hi Mimi,
> The kernel can be configured to verify PE signed kernel images, IMA
> kernel image signatures, both types of signatures, or none. This test
> verifies only properly signed kernel images are loaded into memory,
> based on the kernel configuration and runtime policies.
> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
> --- a/tools/testing/selftests/ima/common_lib.sh
...
> +# Look for config option in Kconfig file.
> +# Return 1 for found and 0 for not found.
I'd revert the return value (for shell is 0 as ok),
but matter of preference.
> +kconfig_enabled()
> +{
> + local config="$1"
> + local msg="$2"
> +
> + grep -E -q $config $IKCONFIG
> + if [ $? -eq 0 ]; then
> + log_info "$msg"
> + return 1
> + fi
> + return 0
> +}
> +
> +# Attempt to get the kernel config first via proc, and then by
> +# extracting it from the kernel image or the configs.ko using
> +# scripts/extract-ikconfig.
> +# Return 1 for found and 0 for not found.
"and 0 for not found": This is not true as it uses log_skip which exits.
And you don't read this value anywhere.
> +get_kconfig()
> +{
> + local proc_config="/proc/config.gz"
> + local module_dir="/lib/modules/`uname -r`"
> + local configs_module="$module_dir/kernel/kernel/configs.ko"
> +
> + if [ ! -f $proc_config ]; then
> + modprobe configs > /dev/null 2>&1
> + fi
> + if [ -f $proc_config ]; then
> + cat $proc_config | gunzip > $IKCONFIG 2>/dev/null
> + if [ $? -eq 0 ]; then
> + return 1
> + fi
> + fi
> +
> + local extract_ikconfig="$module_dir/source/scripts/extract-ikconfig"
> + if [ ! -f $extract_ikconfig ]; then
> + log_skip "extract-ikconfig not found"
> + fi
> +
> + $extract_ikconfig $KERNEL_IMAGE > $IKCONFIG 2>/dev/null
> + if [ $? -eq 1 ]; then
> + if [ ! -f $configs_module ]; then
> + log_skip "CONFIG_IKCONFIG not enabled"
> + fi
> + $extract_ikconfig $configs_module > $IKCONFIG
> + if [ $? -eq 1 ]; then
> + log_skip "CONFIG_IKCONFIG not enabled"
> + fi
> + fi
> + return 1
> +}
Kind regards,
Petr
next prev parent reply other threads:[~2019-02-28 22:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-26 23:26 [PATCH v2 0/5] selftests/ima: add kexec and kernel module tests Mimi Zohar
2019-02-26 23:26 ` [PATCH v2 1/5] selftests/ima: cleanup the kexec selftest Mimi Zohar
2019-02-27 0:57 ` shuah
2019-02-26 23:26 ` [PATCH v2 2/5] selftests/ima: define a set of common functions Mimi Zohar
2019-02-27 1:01 ` shuah
2019-02-28 19:54 ` Petr Vorel
2019-02-26 23:26 ` [PATCH v2 3/5] selftests/ima: define common logging functions Mimi Zohar
2019-02-27 1:39 ` shuah
2019-02-28 20:18 ` Petr Vorel
2019-02-28 21:01 ` Petr Vorel
2019-02-26 23:26 ` [PATCH v2 4/5] selftests/ima: kexec_file_load syscall test Mimi Zohar
2019-02-27 1:54 ` shuah
2019-02-28 22:00 ` Petr Vorel
2019-03-10 17:48 ` Mimi Zohar
2019-03-11 8:34 ` Petr Vorel
2019-03-11 11:49 ` Mimi Zohar
2019-02-28 22:20 ` Petr Vorel [this message]
2019-02-26 23:27 ` [PATCH v2 5/5] selftests/ima: loading kernel modules Mimi Zohar
2019-02-27 1:59 ` shuah
2019-02-27 14:14 ` Mimi Zohar
2019-02-27 15:33 ` shuah
2019-02-27 18:37 ` Mimi Zohar
2019-02-28 23:14 ` Petr Vorel
2019-02-28 22:32 ` Petr Vorel
2019-03-10 17:48 ` Mimi Zohar
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