public inbox for glibc-cvs@sourceware.org
help / color / mirror / Atom feed
From: H.J. Lu <hjl@sourceware.org>
To: glibc-cvs@sourceware.org
Subject: [glibc] Deleted branch hjl/cet/master
Date: Tue, 28 Apr 2020 17:59:45 +0000 (GMT) [thread overview]
Message-ID: <20200428175945.0A2513851C11@sourceware.org> (raw)
The branch 'hjl/cet/master' was deleted.
It previously pointed to:
e772a01f9c... Fix test
Diff:
!!! WARNING: THE FOLLOWING COMMITS ARE NO LONGER ACCESSIBLE (LOST):
-------------------------------------------------------------------
e772a01... Fix test
d0ce483... x86: Add --enable-cet=permissive
f9a69d5... rtld: Get architecture specific initializer in rtld_global
97547c7... CET: Rename CET_MAX to CET_CONTROL_MASK [BZ #25887]
commit e772a01f9cdbf8e9d824f793301437ff0bd725a6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 28 10:57:24 2020 -0700
Fix test
commit d0ce483f4c16edf07d6e2a3a028c7f15388f4735
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Apr 27 15:44:07 2020 -0700
x86: Add --enable-cet=permissive
When CET is enabled, it is an error to dlopen a non CET enabled shared
library in CET enabled application. It may be desirable to make CET
permissive, that is disable CET when dlopening a non CET enabled shared
library. With the new --enable-cet=permissive configure option, CET is
disabled when dlopening a non CET enabled shared library.
Add DEFAULT_DL_X86_FEATURE_1_1 to config.h.in:
/* The default value of _dl_x86_feature_1[1]. */
#define DEFAULT_DL_X86_FEATURE_1_1 0
--enable-cet changes it to
/* The default value of _dl_x86_feature_1[1]. */
#define DEFAULT_DL_X86_FEATURE_1_1 ((CET_ELF_PROPERTY << CET_IBT_SHIFT) | (CET_ELF_PROPERTY << CET_SHSTK_SHIFT))
enables CET features based on ELF property note.
--enable-cet=permissive it to
/* The default value of _dl_x86_feature_1[1]. */
#define DEFAULT_DL_X86_FEATURE_1_1 ((CET_PERMISSIVE << CET_IBT_SHIFT) | (CET_PERMISSIVE << CET_SHSTK_SHIFT))
which enable CET features permissively.
commit f9a69d5fd4c9a3fd4435b6e58a818e3ebe198b00
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 28 10:05:25 2020 -0700
rtld: Get architecture specific initializer in rtld_global
Include <dl-procruntime.c> to get architecture specific initializer in
rtld_global.
commit 97547c772180b927531ce073dd55f2bf646a133d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 28 07:46:17 2020 -0700
CET: Rename CET_MAX to CET_CONTROL_MASK [BZ #25887]
_dl_x86_feature_1[1] is used to control each CET feature, IBT and SHSTK:
/* Valid control values:
0: Enable CET features based on ELF property note.
1: Always disable CET features.
2: Always enable CET features.
3: Enable CET features permissively.
*/
#define CET_ELF_PROPERTY 0
#define CET_ALWAYS_OFF 1
#define CET_ALWAYS_ON 2
#define CET_PERMISSIVE 3
#define CET_MAX CET_PERMISSIVE
CET control value takes 2 bits. Rename CET_MAX to CET_CONTROL_MASK. Add
CET_IBT_SHIFT and CET_SHSTK_SHIFT.
reply other threads:[~2020-04-28 17:59 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200428175945.0A2513851C11@sourceware.org \
--to=hjl@sourceware.org \
--cc=glibc-cvs@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).