net-vpn/wireguard-modules: update EAPI 7 -> 8, migrate to linux-mod-r1

Bug: https://bugs.gentoo.org/908719

Signed-off-by: Mike Pagano <mpagano@gentoo.org>
Closes: https://bugs.gentoo.org/908719
Closes: https://github.com/gentoo/gentoo/pull/33972
Signed-off-by: Mike Pagano <mpagano@gentoo.org>

1 files changed, 98 insertions, 0 deletions

diff --git a/net-vpn/wireguard-modules/wireguard-modules-1.0.20220627-r1.ebuild b/net-vpn/wireguard-modules/wireguard-modules-1.0.20220627-r1.ebuild
new file mode 100644
index 000000000000..cb02e3c10175
--- /dev/null
+++ b/net-vpn/wireguard-modules/wireguard-modules-1.0.20220627-r1.ebuild
@@ -0,0 +1,98 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MODULES_OPTIONAL_IUSE="module"
+inherit linux-mod-r1
+
+DESCRIPTION="Simple yet fast and modern VPN that utilizes state-of-the-art cryptography"
+HOMEPAGE="https://www.wireguard.com/"
+
+if [[ ${PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://git.zx2c4.com/wireguard-linux-compat"
+else
+	SRC_URI="https://git.zx2c4.com/wireguard-linux-compat/snapshot/wireguard-linux-compat-${PV}.tar.xz"
+	S="${WORKDIR}/wireguard-linux-compat-${PV}"
+	# Please don't stabilize this package. Stable users should use gentoo-sources 5.4 or 5.10.
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86"
+fi
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="debug +module module-src"
+
+CONFIG_CHECK="NET INET NET_UDP_TUNNEL CRYPTO_ALGAPI"
+
+pkg_setup() {
+	if use module; then
+		linux-mod-r1_pkg_setup
+		if [[ -f $KERNEL_DIR/include/uapi/linux/wireguard.h ]]; then
+			eerror
+			eerror "WireGuard has been merged upstream into this kernel. Therefore,"
+			eerror "you no longer need this compatibility ebuild. Instead, simply"
+			eerror "enable CONFIG_WIREGUARD=y in your kernel configuration."
+			eerror
+			die "Use CONFIG_WIREGUARD=y for this kernel, and do not use this package."
+		elif kernel_is -lt 3 10 0 || kernel_is -ge 5 6 0; then
+			die "This version of ${PN} requires Linux >= 3.10 and < 5.6."
+		fi
+	fi
+}
+
+src_compile() {
+	local modlist=( wireguard=net:src::module )
+	local modargs=(
+		KERNELDIR=${KV_OUT_DIR}
+	)
+	use debug && modargs+=( CONFIG_WIREGUARD_DEBUG=y )
+	use module && linux-mod-r1_src_compile
+}
+
+src_install() {
+	use module && linux-mod-r1_src_install
+	use module-src && emake DESTDIR="${D}" PREFIX="${EPREFIX}/usr" -C src dkms-install
+}
+
+pkg_postinst() {
+	if use module-src && ! use module; then
+		einfo
+		einfo "You have enabled the module-src USE flag without the module USE"
+		einfo "flag. This means that sources are installed to"
+		einfo "${ROOT}/usr/src/wireguard instead of having the"
+		einfo "kernel module compiled. You will need to compile the module"
+		einfo "yourself. Most likely, you don't want this USE flag, and should"
+		einfo "rather use USE=module"
+		einfo
+	fi
+
+	if use module; then
+		linux-mod-r1_pkg_postinst
+		local old new
+		if [[ $(uname -r) != "${KV_FULL}" ]]; then
+			ewarn
+			ewarn "You have just built WireGuard for kernel ${KV_FULL}, yet the currently running"
+			ewarn "kernel is $(uname -r). If you intend to use this WireGuard module on the currently"
+			ewarn "running machine, you will first need to reboot it into the kernel ${KV_FULL}, for"
+			ewarn "which this module was built."
+			ewarn
+		elif [[ -f /sys/module/wireguard/version ]] && \
+		     old="$(< /sys/module/wireguard/version)" && \
+		     new="$(modinfo -F version "${ROOT}/lib/modules/${KV_FULL}/net/wireguard.ko" 2>/dev/null)" && \
+		     [[ $old != "$new" ]]; then
+			ewarn
+			ewarn "You appear to have just upgraded WireGuard from version v$old to v$new."
+			ewarn "However, the old version is still running on your system. In order to use the"
+			ewarn "new version, you will need to remove the old module and load the new one. As"
+			ewarn "root, you can accomplish this with the following commands:"
+			ewarn
+			ewarn "    # rmmod wireguard"
+			ewarn "    # modprobe wireguard"
+			ewarn
+			ewarn "Do note that doing this will remove current WireGuard interfaces, so you may want"
+			ewarn "to gracefully remove them yourself prior."
+			ewarn
+		fi
+	fi
+}