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security: remove security_sb_post_mountroot hook

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The security_sb_post_mountroot() hook is long-since obsolete, and is
fundamentally broken: it is never invoked if someone uses initramfs.
This is particularly damaging, because the existence of this hook has
been used as motivation for not using initramfs.

Stephen Smalley confirmed on 2007-07-19 that this hook was originally
used by SELinux but can now be safely removed:

     http://marc.info/?l=linux-kernel&m=118485683612916&w=2

Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Paris <eparis@parisplace.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
H. Peter Anvin
2007-12-29 16:20:25 -08:00
committed by James Morris
parent 42d7896ebc
commit bced95283e
4 changed files with 0 additions and 20 deletions
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6
security/dummy.c
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@@ -225,11 +225,6 @@ static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
}
static void dummy_sb_post_mountroot (void)
{
return;
}
static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
{
return;
@@ -1017,7 +1012,6 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, sb_umount_close);
set_to_dummy_if_null(ops, sb_umount_busy);
set_to_dummy_if_null(ops, sb_post_remount);
set_to_dummy_if_null(ops, sb_post_mountroot);
set_to_dummy_if_null(ops, sb_post_addmount);
set_to_dummy_if_null(ops, sb_pivotroot);
set_to_dummy_if_null(ops, sb_post_pivotroot);