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grub2-efi: added xfs sparse inode patch

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This commit is contained in:
Matt Housh 2019-03-02 11:15:09 -06:00
parent de573e5db5
commit 2f6ad3b323
3 changed files with 68 additions and 4 deletions
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5
grub2-efi/.signature
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@ -1,5 +1,6 @@
untrusted comment: verify with /etc/ports/opt.pub
RWSE3ohX2g5d/YJmUPwai4w+Twi2eTcGTxxLuh6HExjesdh+URSxqlpP1xWSFwLQ9xl2NyRwC0LMrQZ4S8i+m0oMo7kxShoIMAw=
SHA256 (Pkgfile) = 4e628b4ad1739b28f0c0935d429bcac90557297cb222adb6ca4e3fcb762aad14
RWSE3ohX2g5d/QFk2NegbA+5dHnlLfmYWTqNhUaYl7NG0gySX3Jag43+FNZ+zNMGiioT3VxebZd3uMQ0rIBMPdhV1kNBlWmJOQk=
SHA256 (Pkgfile) = 577d7e0756e3171bc0bc221bab0ad7a8a6c007710b6ca412bd00eaf9c136c2de
SHA256 (.footprint) = be3c0c176335de61fb03e01702968798c101216091640b618b61b467dcfd92d8
SHA256 (grub-2.02.tar.xz) = 810b3798d316394f94096ec2797909dbf23c858e48f7b3830826b8daa06b7b0f
SHA256 (grub2-xfs.patch) = fcd5a626d4af33665d041ce42df813f1f198d8230ea186481b155a5b676f3b87

7
grub2-efi/Pkgfile
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@ -5,12 +5,15 @@
name=grub2-efi
version=2.02
release=1
source=(http://ftp.gnu.org/gnu/grub/grub-$version.tar.xz)
release=2
source=(http://ftp.gnu.org/gnu/grub/grub-$version.tar.xz \
grub2-xfs.patch)
build() {
export CFLAGS="${CFLAGS} -Wno-error"
patch -d grub-$version -p1 -i $SRC/grub2-xfs.patch
# fix for glibc 'gets' removal
sed -i -e '/gets is a/d' grub-$version/grub-core/gnulib/stdio.in.h

60
grub2-efi/grub2-xfs.patch Normal file
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@ -0,0 +1,60 @@
From cda0a857dd7a27cd5d621747464bfe71e8727fff Mon Sep 17 00:00:00 2001
From: Daniel Kiper <daniel.kiper@oracle.com>
Date: Tue, 29 May 2018 16:16:02 +0200
Subject: xfs: Accept filesystem with sparse inodes
The sparse inode metadata format became a mkfs.xfs default in
xfsprogs-4.16.0, and such filesystems are now rejected by grub as
containing an incompatible feature.
In essence, this feature allows xfs to allocate inodes into fragmented
freespace. (Without this feature, if xfs could not allocate contiguous
space for 64 new inodes, inode creation would fail.)
In practice, the disk format change is restricted to the inode btree,
which as far as I can tell is not used by grub. If all you're doing
today is parsing a directory, reading an inode number, and converting
that inode number to a disk location, then ignoring this feature
should be fine, so I've added it to XFS_SB_FEAT_INCOMPAT_SUPPORTED
I did some brief testing of this patch by hacking up the regression
tests to completely fragment freespace on the test xfs filesystem, and
then write a large-ish number of inodes to consume any existing
contiguous 64-inode chunk. This way any files the grub tests add and
traverse would be in such a fragmented inode allocation. Tests passed,
but I'm not sure how to cleanly integrate that into the test harness.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Chris Murphy <lists@colorremedies.com>
---
grub-core/fs/xfs.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index c6031bd..3b00c74 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -79,9 +79,18 @@ GRUB_MOD_LICENSE ("GPLv3+");
#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1) /* sparse inode chunks */
#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2) /* metadata UUID */
-/* We do not currently verify metadata UUID so it is safe to read such filesystem */
+/*
+ * Directory entries with ftype are explicitly handled by GRUB code.
+ *
+ * We do not currently read the inode btrees, so it is safe to read filesystems
+ * with the XFS_SB_FEAT_INCOMPAT_SPINODES feature.
+ *
+ * We do not currently verify metadata UUID, so it is safe to read filesystems
+ * with the XFS_SB_FEAT_INCOMPAT_META_UUID feature.
+ */
#define XFS_SB_FEAT_INCOMPAT_SUPPORTED \
(XFS_SB_FEAT_INCOMPAT_FTYPE | \
+ XFS_SB_FEAT_INCOMPAT_SPINODES | \
XFS_SB_FEAT_INCOMPAT_META_UUID)
struct grub_xfs_sblock
--
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