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Date:   Fri, 23 Aug 2019 14:29:10 +0200
Message-ID: <s5hsgpsqd49.wl-tiwai@suse.de>
From:   Takashi Iwai <tiwai@suse.de>
To:     Scott Branden <scott.branden@broadcom.com>
Cc:     Luis Chamberlain <mcgrof@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        David Brown <david.brown@linaro.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Shuah Khan <shuah@kernel.org>, bjorn.andersson@linaro.org,
        Shuah Khan <skhan@linuxfoundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "Rafael J . Wysocki" <rafael@kernel.org>,
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        Colin Ian King <colin.king@canonical.com>,
        Kees Cook <keescook@chromium.org>,
        linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 1/7] fs: introduce kernel_pread_file* support
In-Reply-To: <20190822192451.5983-2-scott.branden@broadcom.com>
References: <20190822192451.5983-1-scott.branden@broadcom.com>
        <20190822192451.5983-2-scott.branden@broadcom.com>
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On Thu, 22 Aug 2019 21:24:45 +0200,
Scott Branden wrote:
> 
> Add kernel_pread_file* support to kernel to allow for partial read
> of files with an offset into the file.  Existing kernel_read_file
> functions call new kernel_pread_file functions with offset=0 and
> flags=KERNEL_PREAD_FLAG_WHOLE.

Would this change passes the security check like ima?
I thought security_kernel_post_read_file() checks the whole content
for calculating the hash...


thanks,

Takashi