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From:   Masahiro Yamada <masahiroy@kernel.org>
Date:   Mon, 27 Jun 2022 10:26:06 +0900
Message-ID: <CAK7LNARA0OzE3UX6QdaCybZw6N0Sfa0uDCGNU+cV4hzKEf0wPA@mail.gmail.com>
Subject: Re: [PATCH 2/4] certs: fix and refactor CONFIG_SYSTEM_BLACKLIST_HASH_LIST
 build
To:     Jarkko Sakkinen <jarkko@kernel.org>
Cc:     =?UTF-8?B?TWlja2HDq2wgU2FsYcO8bg==?= <mic@digikod.net>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        David Howells <dhowells@redhat.com>,
        David Woodhouse <dwmw2@infradead.org>,
        keyrings@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Eric Snowberg <eric.snowberg@oracle.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Tyler Hicks <tyhicks@linux.microsoft.com>
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On Sun, Jun 26, 2022 at 3:16 PM Jarkko Sakkinen <jarkko@kernel.org> wrote:
>
> On Sun, Jun 19, 2022 at 07:12:31AM +0900, Masahiro Yamada wrote:
> > On Thu, Jun 16, 2022 at 3:51 AM Jarkko Sakkinen <jarkko@kernel.org> wro=
te:
> > >
> > > On Mon, Jun 13, 2022 at 02:34:36PM +0200, Micka=C3=ABl Sala=C3=BCn wr=
ote:
> > > >
> > > >
> > > > On 11/06/2022 19:22, Masahiro Yamada wrote:
> > > > > Commit addf466389d9 ("certs: Check that builtin blacklist hashes =
are
> > > > > valid") was applied 8 months after the submission.
> > > > >
> > > > > In the meantime, the base code had been removed by commit b8c96a6=
b466c
> > > > > ("certs: simplify $(srctree)/ handling and remove config_filename
> > > > > macro").
> > > > >
> > > > > Fix the Makefile.
> > > > >
> > > > > Create a local copy of $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST). It i=
s
> > > > > included from certs/blacklist_hashes.c and also works as a timest=
amp.
> > > > >
> > > > > Send error messages from check-blacklist-hashes.awk to stderr ins=
tead
> > > > > of stdout.
> > > > >
> > > > > Fixes: addf466389d9 ("certs: Check that builtin blacklist hashes =
are valid")
> > > > > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> > > >
> > > > Reviewed-by: Micka=C3=ABl Sala=C3=BCn <mic@linux.microsoft.com>
> > > >
> > > > As a side note, it may let an orphan certs/blacklist_hashes_checked=
 file but
> > > > we can't really do something about that and it's OK.
> > > >
> > > > Thanks!
> > > >
> > > > > ---
> > > > >
> > > > >   certs/.gitignore         |  2 +-
> > > > >   certs/Makefile           | 20 ++++++++++----------
> > > > >   certs/blacklist_hashes.c |  2 +-
> > > > >   3 files changed, 12 insertions(+), 12 deletions(-)
> > > > >
> > > > > diff --git a/certs/.gitignore b/certs/.gitignore
> > > > > index 56637aceaf81..cec5465f31c1 100644
> > > > > --- a/certs/.gitignore
> > > > > +++ b/certs/.gitignore
> > > > > @@ -1,5 +1,5 @@
> > > > >   # SPDX-License-Identifier: GPL-2.0-only
> > > > > -/blacklist_hashes_checked
> > > > > +/blacklist_hash_list
> > > > >   /extract-cert
> > > > >   /x509_certificate_list
> > > > >   /x509_revocation_list
> > > > > diff --git a/certs/Makefile b/certs/Makefile
> > > > > index cb1a9da3fc58..a8d628fd5f7b 100644
> > > > > --- a/certs/Makefile
> > > > > +++ b/certs/Makefile
> > > > > @@ -7,22 +7,22 @@ obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) +=3D syste=
m_keyring.o system_certificates.o c
> > > > >   obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) +=3D blacklist.o common.=
o
> > > > >   obj-$(CONFIG_SYSTEM_REVOCATION_LIST) +=3D revocation_certificat=
es.o
> > > > >   ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),)
> > > > > -quiet_cmd_check_blacklist_hashes =3D CHECK   $(patsubst "%",%,$(=
2))
> > > > > -      cmd_check_blacklist_hashes =3D $(AWK) -f $(srctree)/script=
s/check-blacklist-hashes.awk $(2); touch $@
> > > > > -$(eval $(call config_filename,SYSTEM_BLACKLIST_HASH_LIST))
> > > > > +$(obj)/blacklist_hashes.o: $(obj)/blacklist_hash_list
> > > > > +CFLAGS_blacklist_hashes.o :=3D -I $(obj)
> > > > > -$(obj)/blacklist_hashes.o: $(obj)/blacklist_hashes_checked
> > > > > +quiet_cmd_check_and_copy_blacklist_hash_list =3D GEN     $@
> > > > > +      cmd_check_and_copy_blacklist_hash_list =3D \
> > > > > +   $(AWK) -f $(srctree)/scripts/check-blacklist-hashes.awk $(CON=
FIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
> > > > > +   cat $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) > $@
> > > > > -CFLAGS_blacklist_hashes.o +=3D -I$(srctree)
> > > > > -
> > > > > -targets +=3D blacklist_hashes_checked
> > > > > -$(obj)/blacklist_hashes_checked: $(SYSTEM_BLACKLIST_HASH_LIST_SR=
CPREFIX)$(SYSTEM_BLACKLIST_HASH_LIST_FILENAME) scripts/check-blacklist-hash=
es.awk FORCE
> > > > > -   $(call if_changed,check_blacklist_hashes,$(SYSTEM_BLACKLIST_H=
ASH_LIST_SRCPREFIX)$(CONFIG_SYSTEM_BLACKLIST_HASH_LIST))
> > > > > +$(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST)=
 FORCE
> > > > > +   $(call if_changed,check_and_copy_blacklist_hash_list)
> > > > >   obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) +=3D blacklist_hashes.o
> > > > >   else
> > > > >   obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) +=3D blacklist_nohashes.=
o
> > > > >   endif
> > > > > +targets +=3D blacklist_hash_list
> > > > >   quiet_cmd_extract_certs  =3D CERT    $@
> > > > >         cmd_extract_certs  =3D $(obj)/extract-cert $(extract-cert=
-in) $@
> > > > > @@ -33,7 +33,7 @@ $(obj)/system_certificates.o: $(obj)/x509_certi=
ficate_list
> > > > >   $(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(o=
bj)/extract-cert FORCE
> > > > >     $(call if_changed,extract_certs)
> > > > > -targets +=3D x509_certificate_list blacklist_hashes_checked
> > > > > +targets +=3D x509_certificate_list
> > > > >   # If module signing is requested, say by allyesconfig, but a ke=
y has not been
> > > > >   # supplied, then one will need to be generated to make sure the=
 build does not
> > > > > diff --git a/certs/blacklist_hashes.c b/certs/blacklist_hashes.c
> > > > > index d5961aa3d338..86d66fe11348 100644
> > > > > --- a/certs/blacklist_hashes.c
> > > > > +++ b/certs/blacklist_hashes.c
> > > > > @@ -2,6 +2,6 @@
> > > > >   #include "blacklist.h"
> > > > >   const char __initconst *const blacklist_hashes[] =3D {
> > > > > -#include CONFIG_SYSTEM_BLACKLIST_HASH_LIST
> > > > > +#include "blacklist_hash_list"
> > > > >     , NULL
> > > > >   };
> > >
> > > I'll make a PR for 1/4 and 2/4 so that they get into 5.19.
> > >
> > > BR, Jarkko
> >
> >
> > Thank you!
> >
> > What shall we do for 3/4 and 4/4?
> >
> > Do you have a plan to queue them up for the next MW?
> >
> > Or, shall I apply them to my kbuild tree with your reivewed-by?
>
> If possible, please do, thank you for taking the trouble.
>
> BR, Jarkko

Now, 3/4 and 4/4 applied to linux-kbuild.
Thanks.


--=20
Best Regards
Masahiro Yamada