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Add Linux 6.8 and Version Enforce Patch
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minextu committed Mar 17, 2024
1 parent 7568d35 commit 18e617c
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Showing 9 changed files with 891 additions and 5 deletions.
2 changes: 1 addition & 1 deletion src/kernels/dkms.sh
Expand Up @@ -3,7 +3,7 @@ mode_name="dkms"
mode_desc="Select and use the dkms packages"

# version
pkgrel="1"
pkgrel="2"

# Version for GIT packages
pkgrel_git="1"
Expand Down
8 changes: 6 additions & 2 deletions src/zfs-dkms/PKGBUILD.sh
Expand Up @@ -10,8 +10,8 @@ pkgrel=${zfs_pkgrel}
makedepends=(${zfs_makedepends})
arch=("x86_64")
url="https://openzfs.org/"
source=("${zfs_src_target}")
sha256sums=("${zfs_src_hash}")
source=("${zfs_src_target}" "enforce-kernel-max-version.patch" "linux-6.8-compat.patch" "kernel-6.8-meta.patch")
sha256sums=("${zfs_src_hash}" "c5a9f546638c706844d5aff99f40366db1684679c3318d3a4093e0746748a711" "b875c877069a4c75c7b2b4b22d048e66f415b86f862ef6b3b83d3524694cc973" "1bc3b2e79e481b1bf41e78f9d142de8e97326288ecdc97f8db65496b7c4fd63b")
license=("CDDL")
depends=("${zfs_utils_pkgname}" "lsb-release" "dkms")
provides=("zfs" "zfs-headers" "spl" "spl-headers")
Expand All @@ -37,4 +37,8 @@ package() {
EOF

if [[ ! ${archzfs_package_group} =~ -rc$ ]]; then
sed -E -i "/^build()/i prepare() {\n cd \"${zfs_workdir}\"\n patch -Np1 -i \${srcdir}/enforce-kernel-max-version.patch\n patch -Np1 -i \${srcdir}/linux-6.8-compat.patch\n patch -Np1 -i \${srcdir}/kernel-6.8-meta.patch\n}" ${zfs_dkms_pkgbuild_path}/PKGBUILD
fi

pkgbuild_cleanup "${zfs_dkms_pkgbuild_path}/PKGBUILD"
300 changes: 300 additions & 0 deletions src/zfs-dkms/enforce-kernel-max-version.patch
@@ -0,0 +1,300 @@
From 2b481b5477d3a95d0eab723c6639f7114e146ae1 Mon Sep 17 00:00:00 2001
From: Rob Norris <robn@despairlabs.com>
Date: Tue, 12 Mar 2024 20:38:12 +1100
Subject: [PATCH] config/kernel: enforce kernel max version, with escape hatch

It's possible for OpenZFS to build correctly against a newer kernel than
it is supported for, but then not work correctly. This invariably
results in disappointment, confusion and/or anger.

Sometimes however we do actually want to compile against a newer kernel
than is supported, usually when testing a pre-release kernel. Add the
deliberately-verbose `--disable-supported-linux-version-check` option to
disable this check. This is lots to type, and so hopefully can be taken
as a very explicit signal that the user knows what they're doing.

Finally, if an unsupported kernel is used and the option is used, a big
warning message is displayed at the end of the configure run to really
try and make the point.

Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
---
config/ax_compare_version.m4 | 177 +++++++++++++++++++++++++++++++++++
config/kernel.m4 | 59 +++++++++++-
configure.ac | 2 +
3 files changed, 236 insertions(+), 2 deletions(-)
create mode 100644 config/ax_compare_version.m4

diff --git a/config/ax_compare_version.m4 b/config/ax_compare_version.m4
new file mode 100644
index 000000000000..ffb4997e8b14
--- /dev/null
+++ b/config/ax_compare_version.m4
@@ -0,0 +1,177 @@
+# ===========================================================================
+# https://www.gnu.org/software/autoconf-archive/ax_compare_version.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPARE_VERSION(VERSION_A, OP, VERSION_B, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+#
+# DESCRIPTION
+#
+# This macro compares two version strings. Due to the various number of
+# minor-version numbers that can exist, and the fact that string
+# comparisons are not compatible with numeric comparisons, this is not
+# necessarily trivial to do in a autoconf script. This macro makes doing
+# these comparisons easy.
+#
+# The six basic comparisons are available, as well as checking equality
+# limited to a certain number of minor-version levels.
+#
+# The operator OP determines what type of comparison to do, and can be one
+# of:
+#
+# eq - equal (test A == B)
+# ne - not equal (test A != B)
+# le - less than or equal (test A <= B)
+# ge - greater than or equal (test A >= B)
+# lt - less than (test A < B)
+# gt - greater than (test A > B)
+#
+# Additionally, the eq and ne operator can have a number after it to limit
+# the test to that number of minor versions.
+#
+# eq0 - equal up to the length of the shorter version
+# ne0 - not equal up to the length of the shorter version
+# eqN - equal up to N sub-version levels
+# neN - not equal up to N sub-version levels
+#
+# When the condition is true, shell commands ACTION-IF-TRUE are run,
+# otherwise shell commands ACTION-IF-FALSE are run. The environment
+# variable 'ax_compare_version' is always set to either 'true' or 'false'
+# as well.
+#
+# Examples:
+#
+# AX_COMPARE_VERSION([3.15.7],[lt],[3.15.8])
+# AX_COMPARE_VERSION([3.15],[lt],[3.15.8])
+#
+# would both be true.
+#
+# AX_COMPARE_VERSION([3.15.7],[eq],[3.15.8])
+# AX_COMPARE_VERSION([3.15],[gt],[3.15.8])
+#
+# would both be false.
+#
+# AX_COMPARE_VERSION([3.15.7],[eq2],[3.15.8])
+#
+# would be true because it is only comparing two minor versions.
+#
+# AX_COMPARE_VERSION([3.15.7],[eq0],[3.15])
+#
+# would be true because it is only comparing the lesser number of minor
+# versions of the two values.
+#
+# Note: The characters that separate the version numbers do not matter. An
+# empty string is the same as version 0. OP is evaluated by autoconf, not
+# configure, so must be a string, not a variable.
+#
+# The author would like to acknowledge Guido Draheim whose advice about
+# the m4_case and m4_ifvaln functions make this macro only include the
+# portions necessary to perform the specific comparison specified by the
+# OP argument in the final configure script.
+#
+# LICENSE
+#
+# Copyright (c) 2008 Tim Toolan <toolan@ele.uri.edu>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 13
+
+dnl #########################################################################
+AC_DEFUN([AX_COMPARE_VERSION], [
+ AC_REQUIRE([AC_PROG_AWK])
+
+ # Used to indicate true or false condition
+ ax_compare_version=false
+
+ # Convert the two version strings to be compared into a format that
+ # allows a simple string comparison. The end result is that a version
+ # string of the form 1.12.5-r617 will be converted to the form
+ # 0001001200050617. In other words, each number is zero padded to four
+ # digits, and non digits are removed.
+ AS_VAR_PUSHDEF([A],[ax_compare_version_A])
+ A=`echo "$1" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \
+ -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/[[^0-9]]//g'`
+
+ AS_VAR_PUSHDEF([B],[ax_compare_version_B])
+ B=`echo "$3" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \
+ -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \
+ -e 's/[[^0-9]]//g'`
+
+ dnl # In the case of le, ge, lt, and gt, the strings are sorted as necessary
+ dnl # then the first line is used to determine if the condition is true.
+ dnl # The sed right after the echo is to remove any indented white space.
+ m4_case(m4_tolower($2),
+ [lt],[
+ ax_compare_version=`echo "x$A
+x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/false/;s/x${B}/true/;1q"`
+ ],
+ [gt],[
+ ax_compare_version=`echo "x$A
+x$B" | sed 's/^ *//' | sort | sed "s/x${A}/false/;s/x${B}/true/;1q"`
+ ],
+ [le],[
+ ax_compare_version=`echo "x$A
+x$B" | sed 's/^ *//' | sort | sed "s/x${A}/true/;s/x${B}/false/;1q"`
+ ],
+ [ge],[
+ ax_compare_version=`echo "x$A
+x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/true/;s/x${B}/false/;1q"`
+ ],[
+ dnl Split the operator from the subversion count if present.
+ m4_bmatch(m4_substr($2,2),
+ [0],[
+ # A count of zero means use the length of the shorter version.
+ # Determine the number of characters in A and B.
+ ax_compare_version_len_A=`echo "$A" | $AWK '{print(length)}'`
+ ax_compare_version_len_B=`echo "$B" | $AWK '{print(length)}'`
+
+ # Set A to no more than B's length and B to no more than A's length.
+ A=`echo "$A" | sed "s/\(.\{$ax_compare_version_len_B\}\).*/\1/"`
+ B=`echo "$B" | sed "s/\(.\{$ax_compare_version_len_A\}\).*/\1/"`
+ ],
+ [[0-9]+],[
+ # A count greater than zero means use only that many subversions
+ A=`echo "$A" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"`
+ B=`echo "$B" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"`
+ ],
+ [.+],[
+ AC_WARNING(
+ [invalid OP numeric parameter: $2])
+ ],[])
+
+ # Pad zeros at end of numbers to make same length.
+ ax_compare_version_tmp_A="$A`echo $B | sed 's/./0/g'`"
+ B="$B`echo $A | sed 's/./0/g'`"
+ A="$ax_compare_version_tmp_A"
+
+ # Check for equality or inequality as necessary.
+ m4_case(m4_tolower(m4_substr($2,0,2)),
+ [eq],[
+ test "x$A" = "x$B" && ax_compare_version=true
+ ],
+ [ne],[
+ test "x$A" != "x$B" && ax_compare_version=true
+ ],[
+ AC_WARNING([invalid OP parameter: $2])
+ ])
+ ])
+
+ AS_VAR_POPDEF([A])dnl
+ AS_VAR_POPDEF([B])dnl
+
+ dnl # Execute ACTION-IF-TRUE / ACTION-IF-FALSE.
+ if test "$ax_compare_version" = "true" ; then
+ m4_ifvaln([$4],[$4],[:])dnl
+ m4_ifvaln([$5],[else $5])dnl
+ fi
+]) dnl AX_COMPARE_VERSION
diff --git a/config/kernel.m4 b/config/kernel.m4
index e3f8645774c5..a3f8efc48e88 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -497,10 +497,39 @@ AC_DEFUN([ZFS_AC_KERNEL], [

AC_MSG_RESULT([$kernsrcver])

- AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [
- AC_MSG_ERROR([
+ AC_ARG_ENABLE([supported-linux-version-check],
+ AS_HELP_STRING([--disable-supported-linux-version-check],
+ [Do not check if building against a supported Linux version]))
+
+ AX_COMPARE_VERSION([$kernsrcver], [ge], [$ZFS_META_KVER_MIN], [
+ kern_min_version_ok=yes
+ ], [
+ kern_min_version_ok=no
+ ])
+
+ AX_COMPARE_VERSION([$kernsrcver], [ge], [$ZFS_META_KVER_MAX], [
+ AX_COMPARE_VERSION([$kernsrcver], [eq2], [$ZFS_META_KVER_MAX], [
+ kern_max_version_ok=yes
+ ], [
+ kern_max_version_ok=no
+ ])
+ ], [
+ kern_max_version_ok=yes
+ ])
+
+ AS_IF([test "x$enable_supported_linux_version_check" != "xno"], [
+ AS_IF([test "x$kern_min_version_ok" != "xyes"], [
+ AC_MSG_ERROR([
*** Cannot build against kernel version $kernsrcver.
*** The minimum supported kernel version is $ZFS_META_KVER_MIN.
+ ])
+ ])
+
+ AS_IF([test "x$kern_max_version_ok" != "xyes"], [
+ AC_MSG_ERROR([
+ *** Cannot build against kernel version $kernsrcver.
+ *** The maximum supported kernel version is $ZFS_META_KVER_MAX.
+ ])
])
])

@@ -513,6 +542,32 @@ AC_DEFUN([ZFS_AC_KERNEL], [
AC_SUBST(LINUX_VERSION)
])

+AC_DEFUN([ZFS_AC_KERNEL_VERSION_WARNING], [
+ AS_IF([test "x$enable_supported_linux_version_check" = "xno"], [
+ AS_IF([test "x$kern_min_version_ok" != "xyes" || \
+ test "x$kern_max_version_ok" != "xyes"], [
+ AC_MSG_WARN([
+
+ You are building OpenZFS against Linux version $kernsrcver.
+
+ This combination IS NOT SUPPORTED by the OpenZFS project. Even if it
+ appears to build and run correctly, there may be bugs that can cause
+ SERIOUS DATA LOSS.
+
+ YOU HAVE BEEN WARNED!
+
+ If you choose to continue, we'd appreciate if you could report your
+ results on the OpenZFS issue tracker at:
+
+ https://github.com/openzfs/zfs/issues/new
+
+ Your feedback will help us prepare a new OpenZFS release that supports
+ this version of Linux.
+ ])
+ ])
+ ])
+])
+
dnl #
dnl # Detect the QAT module to be built against, QAT provides hardware
dnl # acceleration for data compression:
diff --git a/configure.ac b/configure.ac
index 2ce049c58219..9e043862ed1f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,3 +87,5 @@ AC_CONFIG_FILES([


AC_OUTPUT
+
+ZFS_AC_KERNEL_VERSION_WARNING
9 changes: 9 additions & 0 deletions src/zfs-dkms/kernel-6.8-meta.patch
@@ -0,0 +1,9 @@
--- a/META
+++ b/META
@@ -6,5 +6,5 @@ Release: 1
Release-Tags: relext
License: CDDL
Author: OpenZFS
-Linux-Maximum: 6.7
+Linux-Maximum: 6.8
Linux-Minimum: 3.10

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