sys-fs/zfs: backport build fixes and non-root dracut boot fix

Closes: https://bugs.gentoo.org/855182
Closes: https://bugs.gentoo.org/854333
Signed-off-by: Sam James <sam@gentoo.org>

3 files changed, 417 insertions, 0 deletions

diff --git a/sys-fs/zfs/files/2.1.5-build-issues.patch b/sys-fs/zfs/files/2.1.5-build-issues.patch
new file mode 100644
index 000000000000..cca6561b16f7
--- /dev/null
+++ b/sys-fs/zfs/files/2.1.5-build-issues.patch
@@ -0,0 +1,74 @@
+https://github.com/openzfs/zfs/commit/a6e8113fed8a508ffda13cf1c4d8da99a4e8133a
+https://github.com/openzfs/zfs/commit/60e389ca10085acfa7cd35f79ab4465d968a942f
+Cherry-picked from https://github.com/openzfs/zfs/pull/13575
+
+https://bugs.gentoo.org/855182
+--- a/config/always-compiler-options.m4
++++ b/config/always-compiler-options.m4
+@@ -205,6 +205,29 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_NO_OMIT_FRAME_POINTER], [
+ 	AC_SUBST([NO_OMIT_FRAME_POINTER])
+ ])
+ 
++dnl #
++dnl # Check if cc supports -Winfinite-recursion option.
++dnl #
++AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_INFINITE_RECURSION], [
++	AC_MSG_CHECKING([whether $CC supports -Winfinite-recursion])
++
++	saved_flags="$CFLAGS"
++	CFLAGS="$CFLAGS -Werror -Winfinite-recursion"
++
++	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [
++		INFINITE_RECURSION=-Winfinite-recursion
++		AC_DEFINE([HAVE_INFINITE_RECURSION], 1,
++			[Define if compiler supports -Winfinite-recursion])
++		AC_MSG_RESULT([yes])
++	], [
++		INFINITE_RECURSION=
++		AC_MSG_RESULT([no])
++	])
++
++	CFLAGS="$saved_flags"
++	AC_SUBST([INFINITE_RECURSION])
++])
++
+ dnl #
+ dnl # Check if cc supports -fno-ipa-sra option.
+ dnl #
+--- a/config/zfs-build.m4
++++ b/config/zfs-build.m4
+@@ -211,6 +211,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS], [
+ 
+ 	ZFS_AC_CONFIG_ALWAYS_CC_NO_UNUSED_BUT_SET_VARIABLE
+ 	ZFS_AC_CONFIG_ALWAYS_CC_NO_BOOL_COMPARE
++	ZFS_AC_CONFIG_ALWAYS_CC_INFINITE_RECURSION
+ 	ZFS_AC_CONFIG_ALWAYS_CC_IMPLICIT_FALLTHROUGH
+ 	ZFS_AC_CONFIG_ALWAYS_CC_FRAME_LARGER_THAN
+ 	ZFS_AC_CONFIG_ALWAYS_CC_NO_FORMAT_TRUNCATION
+--- a/module/lua/ldo.c
++++ b/module/lua/ldo.c
+@@ -168,6 +168,13 @@ static void seterrorobj (lua_State *L, int errcode, StkId oldtop) {
+   L->top = oldtop + 1;
+ }
+ 
++/*
++ * Silence infinite recursion warning which was added to -Wall in gcc 12.1
++ */
++#if defined(HAVE_INFINITE_RECURSION)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Winfinite-recursion"
++#endif
+ 
+ l_noret luaD_throw (lua_State *L, int errcode) {
+   if (L->errorJmp) {  /* thread has an error handler? */
+@@ -190,6 +197,10 @@ l_noret luaD_throw (lua_State *L, int errcode) {
+   }
+ }
+ 
++#if defined(HAVE_INFINITE_RECURSION)
++#pragma GCC diagnostic pop
++#endif
++
+ 
+ int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
+   unsigned short oldnCcalls = L->nCcalls;
diff --git a/sys-fs/zfs/files/2.1.5-dracut-non-root.patch b/sys-fs/zfs/files/2.1.5-dracut-non-root.patch
new file mode 100644
index 000000000000..6d1caf92cd2d
--- /dev/null
+++ b/sys-fs/zfs/files/2.1.5-dracut-non-root.patch
@@ -0,0 +1,33 @@
+https://github.com/openzfs/zfs/pull/13589
+https://bugs.gentoo.org/854333
+
+From ef9d996669cc2ec596d4e90753b89b32a3f0ce59 Mon Sep 17 00:00:00 2001
+From: "Andrew J. Hesford" <ajh@sideband.org>
+Date: Fri, 24 Jun 2022 11:05:53 -0400
+Subject: [PATCH] Dracut module: fix parsing of root= kernel command-line
+ argument
+
+Some Dracut modules may read the `root=` kernel command-line argument
+and rewrite it; in particular, `rootfs-block` installs a command-line
+hook that to canonicalize arguments that specify block devices. If the
+`zfs` module is added to an initramfs (which it is, by default, as long
+as the core ZFS utilities are available) on a system that does not use a
+ZFS root filesystem, the `zfs` module will overwrite the `root` shell
+variable with the contents of the kernel command-line in the process of
+determining if it should control mounting the root. This breaks the
+initramfs. To solve this problem, only parse the kernel command-line
+directly if the `root` shell variable is empty; otherwise, rely on the
+parsing (and possible rewriting) done by other modules.
+
+Signed-off-by: Andrew J. Hesford <ajh@sideband.org>
+--- a/contrib/dracut/90zfs/zfs-lib.sh.in
++++ b/contrib/dracut/90zfs/zfs-lib.sh.in
+@@ -88,7 +88,7 @@ decode_root_args() {
+         return
+     fi
+ 
+-    root=$(getarg root=)
++    [ -n  "$root" ] || root=$(getarg root=)
+     rootfstype=$(getarg rootfstype=)
+ 
+     # shellcheck disable=SC2249
diff --git a/sys-fs/zfs/zfs-2.1.5-r1.ebuild b/sys-fs/zfs/zfs-2.1.5-r1.ebuild
new file mode 100644
index 000000000000..7f0466ea0e20
--- /dev/null
+++ b/sys-fs/zfs/zfs-2.1.5-r1.ebuild
@@ -0,0 +1,310 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DISTUTILS_OPTIONAL=1
+PYTHON_COMPAT=( python3_{8..10} )
+
+inherit autotools bash-completion-r1 dist-kernel-utils distutils-r1 flag-o-matic linux-info pam systemd udev usr-ldscript
+
+DESCRIPTION="Userland utilities for ZFS Linux kernel module"
+HOMEPAGE="https://github.com/openzfs/zfs"
+
+if [[ ${PV} == "9999" ]]; then
+	inherit git-r3 linux-mod
+	EGIT_REPO_URI="https://github.com/openzfs/zfs.git"
+else
+	VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/openzfs.asc
+	inherit verify-sig
+
+	MY_P="${P/_rc/-rc}"
+	SRC_URI="https://github.com/openzfs/${PN}/releases/download/${MY_P}/${MY_P}.tar.gz"
+	SRC_URI+=" verify-sig? ( https://github.com/openzfs/${PN}/releases/download/${MY_P}/${MY_P}.tar.gz.asc )"
+	S="${WORKDIR}/${P%_rc?}"
+
+	if [[ ${PV} != *_rc* ]]; then
+		KEYWORDS="~amd64 ~arm64 ~ppc64 ~riscv"
+	fi
+fi
+
+LICENSE="BSD-2 CDDL MIT"
+# just libzfs soname major for now.
+# possible candidates: libuutil, libzpool, libnvpair. Those do not provide stable abi, but are considered.
+# see libsoversion_check() below as well
+SLOT="0/5"
+IUSE="custom-cflags debug dist-kernel kernel-builtin minimal nls pam python +rootfs test-suite"
+
+DEPEND="
+	net-libs/libtirpc:=
+	sys-apps/util-linux
+	sys-libs/zlib
+	virtual/libudev:=
+	dev-libs/openssl:0=
+	!minimal? ( ${PYTHON_DEPS} )
+	pam? ( sys-libs/pam )
+	python? (
+		virtual/python-cffi[${PYTHON_USEDEP}]
+	)
+"
+
+BDEPEND="virtual/awk
+	virtual/pkgconfig
+	nls? ( sys-devel/gettext )
+	python? (
+		dev-python/setuptools[${PYTHON_USEDEP}]
+		|| (
+			dev-python/packaging[${PYTHON_USEDEP}]
+			dev-python/distlib[${PYTHON_USEDEP}]
+		)
+	)
+"
+
+if [[ ${PV} != "9999" ]] ; then
+	BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-openzfs )"
+fi
+
+# awk is used for some scripts, completions, and the Dracut module
+RDEPEND="${DEPEND}
+	!kernel-builtin? ( ~sys-fs/zfs-kmod-${PV}:= )
+	!prefix? ( virtual/udev )
+	sys-fs/udev-init-scripts
+	virtual/awk
+	dist-kernel? ( virtual/dist-kernel:= )
+	rootfs? (
+		app-arch/cpio
+		app-misc/pax-utils
+		!<sys-kernel/genkernel-3.5.1.1
+	)
+	test-suite? (
+		app-shells/ksh
+		sys-apps/kmod[tools]
+		sys-apps/util-linux
+		sys-devel/bc
+		sys-block/parted
+		sys-fs/lsscsi
+		sys-fs/mdadm
+		sys-process/procps
+	)
+"
+
+# PDEPEND in this form is needed to trick portage suggest
+# enabling dist-kernel if only 1 package have it set, without suggesting to disable
+PDEPEND="dist-kernel? ( ~sys-fs/zfs-kmod-${PV}[dist-kernel] )"
+
+REQUIRED_USE="
+	!minimal? ( ${PYTHON_REQUIRED_USE} )
+	python? ( !minimal )
+	test-suite? ( !minimal )
+"
+
+RESTRICT="test"
+
+PATCHES=(
+	# bug #855182
+	"${FILESDIR}"/${PV}-build-issues.patch
+	# bug #854333
+	"${FILESDIR}"/${PV}-dracut-non-root.patch
+)
+
+pkg_pretend() {
+	use rootfs || return 0
+
+	if has_version virtual/dist-kernel && ! use dist-kernel; then
+		ewarn "You have virtual/dist-kernel installed, but"
+		ewarn "USE=\"dist-kernel\" is not enabled for ${CATEGORY}/${PN}"
+		ewarn "It's recommended to globally enable dist-kernel USE flag"
+		ewarn "to auto-trigger initrd rebuilds with kernel updates"
+	fi
+}
+
+pkg_setup() {
+	if use kernel_linux; then
+		linux-info_pkg_setup
+
+		if ! linux_config_exists; then
+			ewarn "Cannot check the linux kernel configuration."
+		else
+			if use test-suite; then
+				if linux_chkconfig_present BLK_DEV_LOOP; then
+					eerror "The ZFS test suite requires loop device support enabled."
+					eerror "Please enable it:"
+					eerror "    CONFIG_BLK_DEV_LOOP=y"
+					eerror "in /usr/src/linux/.config or"
+					eerror "    Device Drivers --->"
+					eerror "        Block devices --->"
+					eerror "            [X] Loopback device support"
+				fi
+			fi
+		fi
+	fi
+}
+
+libsoversion_check() {
+	local bugurl libzfs_sover
+	bugurl="https://bugs.gentoo.org/enter_bug.cgi?form_name=enter_bug&product=Gentoo+Linux&component=Current+packages"
+
+	libzfs_sover="$(grep 'libzfs_la_LDFLAGS += -version-info' lib/libzfs/Makefile.am \
+		| grep -Eo '[0-9]+:[0-9]+:[0-9]+')"
+	libzfs_sover="${libzfs_sover%%:*}"
+
+	if [[ ${libzfs_sover} -ne $(ver_cut 2 ${SLOT}) ]]; then
+		echo
+		eerror "BUG BUG BUG BUG BUG BUG BUG BUG"
+		eerror "ebuild subslot does not match libzfs soversion!"
+		eerror "libzfs soversion: ${libzfs_sover}"
+		eerror "ebuild value: $(ver_cut 2 ${SLOT})"
+		eerror "This is a bug in the ebuild, please use the following URL to report it"
+		eerror "${bugurl}&short_desc=${CATEGORY}%2F${P}+update+subslot"
+		echo
+		# we want to abort for releases, but just print a warning for live ebuild
+		# to keep package installable
+		[[  ${PV} == "9999" ]] || die
+	fi
+}
+
+src_prepare() {
+	default
+	libsoversion_check
+
+	# Run unconditionally (bug #792627)
+	eautoreconf
+
+	if [[ ${PV} != "9999" ]]; then
+		# Set revision number
+		sed -i "s/\(Release:\)\(.*\)1/\1\2${PR}-gentoo/" META || die "Could not set Gentoo release"
+	fi
+
+	if use python; then
+		pushd contrib/pyzfs >/dev/null || die
+		distutils-r1_src_prepare
+		popd >/dev/null || die
+	fi
+
+	# prevent errors showing up on zfs-mount stop, #647688
+	# openrc will unmount all filesystems anyway.
+	sed -i "/^ZFS_UNMOUNT=/ s/yes/no/" "etc/default/zfs.in" || die
+}
+
+src_configure() {
+	use custom-cflags || strip-flags
+	use minimal || python_setup
+
+	local myconf=(
+		--bindir="${EPREFIX}/bin"
+		--enable-shared
+		--enable-sysvinit
+		--localstatedir="${EPREFIX}/var"
+		--sbindir="${EPREFIX}/sbin"
+		--with-config=user
+		--with-dracutdir="${EPREFIX}/usr/lib/dracut"
+		--with-linux="${KV_DIR}"
+		--with-linux-obj="${KV_OUT_DIR}"
+		--with-udevdir="$(get_udevdir)"
+		--with-pamconfigsdir="${EPREFIX}/unwanted_files"
+		--with-pammoduledir="$(getpam_mod_dir)"
+		--with-systemdunitdir="$(systemd_get_systemunitdir)"
+		--with-systemdpresetdir="$(systemd_get_systempresetdir)"
+		--with-vendor=gentoo
+		# Building zfs-mount-generator.c on musl breaks as strndupa
+		# isn't available. But systemd doesn't support musl anyway, so
+		# just disable building it.
+		$(use_enable !elibc_musl systemd)
+		$(use_enable debug)
+		$(use_enable nls)
+		$(use_enable pam)
+		$(use_enable python pyzfs)
+		--disable-static
+		$(usex minimal --without-python --with-python="${EPYTHON}")
+	)
+
+	econf "${myconf[@]}"
+}
+
+src_compile() {
+	default
+	if use python; then
+		pushd contrib/pyzfs >/dev/null || die
+		distutils-r1_src_compile
+		popd >/dev/null || die
+	fi
+}
+
+src_install() {
+	default
+
+	gen_usr_ldscript -a nvpair uutil zfsbootenv zfs zfs_core zpool
+
+	use pam && { rm -rv "${ED}/unwanted_files" || die ; }
+
+	use test-suite || { rm -r "${ED}"/usr/share/zfs/{test-runner,zfs-tests,runfiles,*sh} || die ; }
+
+	find "${ED}" -name '*.la' -delete || die
+
+	dobashcomp contrib/bash_completion.d/zfs
+	bashcomp_alias zfs zpool
+
+	# strip executable bit from conf.d file
+	fperms 0644 /etc/conf.d/zfs
+
+	if use python; then
+		pushd contrib/pyzfs >/dev/null || die
+		distutils-r1_src_install
+		popd >/dev/null || die
+	fi
+
+	# enforce best available python implementation
+	use minimal || python_fix_shebang "${ED}/bin"
+}
+
+pkg_postinst() {
+	udev_reload
+
+	# we always need userspace utils in sync with zfs-kmod
+	# so force initrd update for userspace as well, to avoid
+	# situation when zfs-kmod trigger initrd rebuild before
+	# userspace component is rebuilt
+	# KV_* variables are provided by linux-info.eclass
+	if [[ -z ${ROOT} ]] && use dist-kernel; then
+		dist-kernel_reinstall_initramfs "${KV_DIR}" "${KV_FULL}"
+	fi
+
+	if use rootfs; then
+		if ! has_version sys-kernel/genkernel && ! has_version sys-kernel/dracut; then
+			elog "Root on zfs requires an initramfs to boot"
+			elog "The following packages provide one and are tested on a regular basis:"
+			elog "  sys-kernel/dracut ( preferred, module maintained by zfs developers )"
+			elog "  sys-kernel/genkernel"
+		fi
+	fi
+
+	if ! use kernel-builtin && [[ ${PV} == "9999" ]]; then
+		einfo "Adding ${P} to the module database to ensure that the"
+		einfo "kernel modules and userland utilities stay in sync."
+		update_moduledb
+	fi
+
+	if systemd_is_booted || has_version sys-apps/systemd; then
+		einfo "Please refer to ${EROOT}/$(systemd_get_systempresetdir)/50-zfs.preset"
+		einfo "for default zfs systemd service configuration"
+	else
+		[[ -e "${EROOT}/etc/runlevels/boot/zfs-import" ]] || \
+			einfo "You should add zfs-import to the boot runlevel."
+		[[ -e "${EROOT}/etc/runlevels/boot/zfs-load-key" ]] || \
+			einfo "You should add zfs-load-key to the boot runlevel."
+		[[ -e "${EROOT}/etc/runlevels/boot/zfs-mount" ]]|| \
+			einfo "You should add zfs-mount to the boot runlevel."
+		[[ -e "${EROOT}/etc/runlevels/default/zfs-share" ]] || \
+			einfo "You should add zfs-share to the default runlevel."
+		[[ -e "${EROOT}/etc/runlevels/default/zfs-zed" ]] || \
+			einfo "You should add zfs-zed to the default runlevel."
+	fi
+}
+
+pkg_postrm() {
+	udev_reload
+
+	if ! use kernel-builtin && [[ ${PV} == "9999" ]]; then
+		remove_moduledb
+	fi
+}