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From: David Howells <dhowells@redhat.com>
To: Mimi Zohar <zohar@linux.ibm.com>
Cc: dhowells@redhat.com, viro@zeniv.linux.org.uk,
	Mimi Zohar <zohar@linux.vnet.ibm.com>,
	linux-fsdevel@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] vfs: Move kernel_read_file() to fs/read_write.c
Date: Mon, 04 Mar 2019 16:22:20 +0000	[thread overview]
Message-ID: <12096.1551716540@warthog.procyon.org.uk> (raw)
In-Reply-To: <1551715930.10911.468.camel@linux.ibm.com>

Mimi Zohar <zohar@linux.ibm.com> wrote:

> > Move kernel_read_file() to fs/read_write.c and out of fs/exec.c as it's not
> > actually used by anything in the execve subsystem.
> 
> All files being opened by the kernel should be calling one of these
> helper routines.  Has that changed?

prepare_binprm() uses kernel_read() and has done since at least 2014.  The
binfmt drivers also use kernel_read().

Since kernel_read_file() is used by a bunch of things that aren't exec, even
if we switch exec to it, it should probably still go in fs/read_write.c since
it seems generic.

David

  parent reply	other threads:[~2019-03-04 16:22 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-04 15:11 David Howells
2019-03-04 16:12 ` Mimi Zohar
2019-03-04 16:22 ` David Howells [this message]
2019-03-04 16:49   ` Mimi Zohar
2019-03-05 23:18 David Howells

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