From patchwork Mon Apr 1 07:01:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 10879239 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3DC3013B5 for ; Mon, 1 Apr 2019 07:01:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2BCAB287FE for ; Mon, 1 Apr 2019 07:01:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1F92928812; Mon, 1 Apr 2019 07:01:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1599C2880B for ; Mon, 1 Apr 2019 07:01:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731824AbfDAHBX (ORCPT ); Mon, 1 Apr 2019 03:01:23 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:48848 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725867AbfDAHBX (ORCPT ); Mon, 1 Apr 2019 03:01:23 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x316wgul175435; Mon, 1 Apr 2019 07:01:21 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : subject : message-id : references : mime-version : content-type : in-reply-to; s=corp-2018-07-02; bh=gexLmQGsVaCo1Yl+8gWMSHGGIveA9gqiMWP2FfO+esk=; b=PBm5NtvfN0+VHAuO8h5el/p0X9A14nQp8g2ge6d9dKPBloNzO2HiqJ560ZVb25CCUT1Z LMqkF6BA9KB7WRwMqTaE0E/tjESy/8wioJ7kHnZAV/YPkNr3z+sTzxaT1cpbqkJkEW+2 5Vt2DbVIl+O/D+M4Tv8N2iG2s3nLdse3zV9KrSO+I81cUWp2/UeH2jKhRcgaXotol93h ImbK/EaSFJo3TjGY8mAWXCssuz24WbKkyaZtzSdwGoFXKwxpOaX8c6OG+PiOkQBOGaXG 8ZMr4J/84CPJikVq1uYU+j5zCANdMEVEltuxH8lcuNHzbni1a1rNjLMoWypASrbybSkz Jw== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp2130.oracle.com with ESMTP id 2rhwycw57x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 01 Apr 2019 07:01:21 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id x3171K8L003449 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 1 Apr 2019 07:01:21 GMT Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x3171KbE020549; Mon, 1 Apr 2019 07:01:20 GMT Received: from localhost (/67.161.8.12) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 01 Apr 2019 00:01:20 -0700 Date: Mon, 1 Apr 2019 00:01:18 -0700 From: "Darrick J. Wong" To: linux-fsdevel , linux-ext4 , xfs Subject: [PATCH] e2fsprogs: create tools for formatting and fscking bootfs Message-ID: <20190401070118.GB1177@magnolia> References: <20190401070001.GJ1173@magnolia> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190401070001.GJ1173@magnolia> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9213 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=9 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904010052 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Darrick J. Wong Create tools and documentation for our new simple bootloader filesystem. Signed-off-by: Darrick J. Wong --- e2fsck/Makefile.in | 4 ++-- misc/Makefile.in | 8 ++++---- misc/ext4.5.in | 5 +++++ misc/mke2fs.conf.in | 3 +++ 4 files changed, 14 insertions(+), 6 deletions(-) diff --git a/e2fsck/Makefile.in b/e2fsck/Makefile.in index 9799274fa..69bd244d7 100644 --- a/e2fsck/Makefile.in +++ b/e2fsck/Makefile.in @@ -196,7 +196,7 @@ install: $(PROGS) $(MANPAGES) $(FMANPAGES) installdirs $(ES) " INSTALL $(root_sbindir)/$$i"; \ $(INSTALL_PROGRAM) $$i $(DESTDIR)$(root_sbindir)/$$i; \ done - $(Q) for i in ext2 ext3 ext4; do \ + $(Q) for i in ext2 ext3 ext4 bootfs; do \ $(ES) " LINK $(root_sbindir)/fsck.$$i"; \ (cd $(DESTDIR)$(root_sbindir); \ $(LN) $(LINK_INSTALL_FLAGS) e2fsck fsck.$$i); \ @@ -215,7 +215,7 @@ install: $(PROGS) $(MANPAGES) $(FMANPAGES) installdirs $(ES) " INSTALL_DATA $(man5dir)/$$i"; \ $(INSTALL_DATA) $$i $(DESTDIR)$(man5dir)/$$i; \ done - $(Q) for i in ext2 ext3 ext4; do \ + $(Q) for i in ext2 ext3 ext4 bootfs; do \ $(ES) " LINK $(man8dir)/fsck.$$i.8"; \ (cd $(DESTDIR)$(man8dir); \ $(LN) $(LINK_INSTALL_FLAGS) e2fsck.8 fsck.$$i.8); \ diff --git a/misc/Makefile.in b/misc/Makefile.in index 22c984893..c961f26fd 100644 --- a/misc/Makefile.in +++ b/misc/Makefile.in @@ -545,7 +545,7 @@ install: all $(SMANPAGES) $(UMANPAGES) installdirs $(ES) " INSTALL $(sbindir)/$$i"; \ $(INSTALL_PROGRAM) $$i $(DESTDIR)$(sbindir)/$$i; \ done - $(Q) for i in ext2 ext3 ext4; do \ + $(Q) for i in ext2 ext3 ext4 bootfs; do \ $(ES) " LINK $(root_sbindir)/mkfs.$$i"; \ (cd $(DESTDIR)$(root_sbindir); \ $(LN) $(LINK_INSTALL_FLAGS) mke2fs mkfs.$$i); \ @@ -576,7 +576,7 @@ install: all $(SMANPAGES) $(UMANPAGES) installdirs done $(Q) $(RM) -f $(DESTDIR)$(man8dir)/mkfs.ext2.8.gz \ $(DESTDIR)$(man8dir)/mkfs.ext3.8.gz - $(Q) for i in ext2 ext3 ext4; do \ + $(Q) for i in ext2 ext3 ext4 bootfs; do \ $(ES) " LINK mkfs.$$i.8"; \ (cd $(DESTDIR)$(man8dir); \ $(LN) $(LINK_INSTALL_FLAGS) mke2fs.8 mkfs.$$i.8); \ @@ -595,7 +595,7 @@ install: all $(SMANPAGES) $(UMANPAGES) installdirs $(ES) " INSTALL_DATA $(man5dir)/$$i"; \ $(INSTALL_DATA) $$i $(DESTDIR)$(man5dir)/$$i; \ done - $(Q) for i in ext2 ext3; do \ + $(Q) for i in ext2 ext3 bootfs; do \ $(ES) " LINK $$i.5"; \ (cd $(DESTDIR)$(man5dir); \ $(LN) $(LINK_INSTALL_FLAGS) ext4.5 $$i.5); \ @@ -674,7 +674,7 @@ uninstall: for i in $(FMANPAGES); do \ $(RM) -f $(DESTDIR)$(man5dir)/$$i; \ done - $(Q) for i in ext2 ext3; do \ + $(Q) for i in ext2 ext3 bootfs; do \ $(ES) " LINK $$i.5"; \ $(RM) -f $(DESTDIR)$(man5dir)/$$i.5; \ done diff --git a/misc/ext4.5.in b/misc/ext4.5.in index ee5e17097..7eff9c1d1 100644 --- a/misc/ext4.5.in +++ b/misc/ext4.5.in @@ -9,6 +9,8 @@ ext2 \- the second extended file system ext3 \- the third extended file system .br ext4 \- the fourth extended file system +.br +bootfs \- the simple bootloader file system .SH DESCRIPTION The second, third, and fourth extended file systems, or ext2, ext3, and ext4 as they are commonly known, are Linux file systems that have @@ -19,6 +21,9 @@ previously intended for use with the ext2 and ext3 file systems can be mounted using the ext4 file system driver, and indeed in many modern Linux distributions, the ext4 file system driver has been configured to handle mount requests for ext2 and ext3 file systems. +bootfs is a simple bootloader filesystem that trades thirty years' worth of +filesystem design and speed improvements for safety in the face of poorly +written userspace software and bootloaders; it is basically ext3 with extents. .SH FILE SYSTEM FEATURES A file system formatted for ext2, ext3, or ext4 can have some collection of the following file system feature flags enabled. Some of diff --git a/misc/mke2fs.conf.in b/misc/mke2fs.conf.in index 00afd9128..b60f86f6d 100644 --- a/misc/mke2fs.conf.in +++ b/misc/mke2fs.conf.in @@ -10,6 +10,9 @@ ext3 = { features = has_journal } + bootfs = { + features = has_journal,extent + } ext4 = { features = has_journal,extent,huge_file,flex_bg,metadata_csum,64bit,dir_nlink,extra_isize inode_size = 256