[oe-core][PATCHv16 1/6] emptty: add version 0.15.0

[<rs@ti.com>]

From: Randolph Sapp <rs@ti.com>

Add emptty, a "Dead simple CLI Display Manager on TTY". This is a
relatively lightweight display manager that supports x11 as well as
wayland through both a CLI and an automatic login mechanism.

This can effectively replace the custom init scripts for both x11
(xserver-nodm-init) and wayland (weston-init) with a single tool with
more verbose logging capabilities.

This is split into two recipes. The emptty package provides the binary
and various agnostic configs while the emptty-conf package provides the
default configuration for the application itself. This RPROVIDES
virtual-emptty-conf, allowing other recipes to provide their own
configurations to override the default behavior.

Signed-off-by: Randolph Sapp <rs@ti.com>
---
 meta-selftest/files/static-group              |  1 +
 .../rootfs-postcommands.bbclass               | 14 ++++-
 .../conf/distro/include/default-providers.inc |  1 +
 meta/conf/distro/include/maintainers.inc      |  2 +
 meta/recipes-graphics/emptty/emptty-conf.bb   | 14 +++++
 meta/recipes-graphics/emptty/emptty.inc       | 27 +++++++++
 meta/recipes-graphics/emptty/emptty/pamconf   | 10 ++++
 meta/recipes-graphics/emptty/emptty_0.15.0.bb | 55 +++++++++++++++++++
 8 files changed, 123 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-graphics/emptty/emptty-conf.bb
 create mode 100644 meta/recipes-graphics/emptty/emptty.inc
 create mode 100644 meta/recipes-graphics/emptty/emptty/pamconf
 create mode 100644 meta/recipes-graphics/emptty/emptty_0.15.0.bb

diff --git a/meta-selftest/files/static-group b/meta-selftest/files/static-group
index 3fca4aa5c9..1c3c6b73e3 100644
--- a/meta-selftest/files/static-group
+++ b/meta-selftest/files/static-group
@@ -28,4 +28,5 @@ ptest:x:529:
 xuser:x:530:
 seat:x:531:
 audio:x:532:
+nopasswdlogin:x:533:
 nogroup:x:65534:
diff --git a/meta/classes-recipe/rootfs-postcommands.bbclass b/meta/classes-recipe/rootfs-postcommands.bbclass
index f0c7ee658d..a6a23b46a9 100644
--- a/meta/classes-recipe/rootfs-postcommands.bbclass
+++ b/meta/classes-recipe/rootfs-postcommands.bbclass
@@ -45,7 +45,7 @@ POSTINST_LOGFILE ?= "${localstatedir}/log/postinstall.log"
 SYSTEMD_DEFAULT_TARGET ?= '${@bb.utils.contains_any("IMAGE_FEATURES", [ "x11-base", "weston" ], "graphical.target", "multi-user.target", d)}'
 ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("DISTRO_FEATURES", "systemd", "set_systemd_default_target systemd_sysusers_check systemd_handle_machine_id", "", d)}'
 
-ROOTFS_POSTPROCESS_COMMAND += 'empty_var_volatile'
+ROOTFS_POSTPROCESS_COMMAND += 'empty_var_volatile add_emptty_inittab'
 
 ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("DISTRO_FEATURES", "overlayfs", "overlayfs_qa_check", "", d)}'
 
@@ -193,6 +193,18 @@ systemd_handle_machine_id() {
     fi
 }
 
+#
+# A hook function to work around limitations of legacy inittab behavior
+#
+add_emptty_inittab() {
+    [ -f ${IMAGE_ROOTFS}${sysconfdir}/inittab ] || return 0
+
+    if ${@bb.utils.contains_any("IMAGE_FEATURES", [ "x11-base", "weston" ], "true", "false", d)}
+    then
+	echo "7:5:respawn:${bindir}/emptty -t 7 -d" >> ${IMAGE_ROOTFS}${sysconfdir}/inittab
+    fi
+}
+
 #
 # A hook function to support read-only-rootfs IMAGE_FEATURES
 #
diff --git a/meta/conf/distro/include/default-providers.inc b/meta/conf/distro/include/default-providers.inc
index 5101ad78f8..e9a6d299bc 100644
--- a/meta/conf/distro/include/default-providers.inc
+++ b/meta/conf/distro/include/default-providers.inc
@@ -67,3 +67,4 @@ PREFERRED_PROVIDER_virtual/nativesdk-libsdl2 ?= "nativesdk-libsdl2"
 PREFERRED_RPROVIDER_virtual-libegl-icd ?= "mesa"
 PREFERRED_RPROVIDER_virtual-libglx-icd ?= "mesa"
 PREFERRED_RPROVIDER_virtual-x-terminal-emulator ?= "rxvt-unicode"
+PREFERRED_RPROVIDER_virtual-emptty-conf ?= "emptty-conf"
diff --git a/meta/conf/distro/include/maintainers.inc b/meta/conf/distro/include/maintainers.inc
index b5ab35d92a..81c7919aa4 100644
--- a/meta/conf/distro/include/maintainers.inc
+++ b/meta/conf/distro/include/maintainers.inc
@@ -171,6 +171,8 @@ RECIPE_MAINTAINER:pn-efivar = "Ross Burton <ross.burton@arm.com>"
 RECIPE_MAINTAINER:pn-efibootmgr = "Ross Burton <ross.burton@arm.com>"
 RECIPE_MAINTAINER:pn-elfutils = "Unassigned <unassigned@yoctoproject.org>"
 RECIPE_MAINTAINER:pn-ell = "Unassigned <unassigned@yoctoproject.org>"
+RECIPE_MAINTAINER:pn-emptty = "Randolph Sapp <rs@ti.com>"
+RECIPE_MAINTAINER:pn-emptty-conf = "Randolph Sapp <rs@ti.com>"
 RECIPE_MAINTAINER:pn-enchant2 = "Unassigned <unassigned@yoctoproject.org>"
 RECIPE_MAINTAINER:pn-encodings = "Unassigned <unassigned@yoctoproject.org>"
 RECIPE_MAINTAINER:pn-epiphany = "Unassigned <unassigned@yoctoproject.org>"
diff --git a/meta/recipes-graphics/emptty/emptty-conf.bb b/meta/recipes-graphics/emptty/emptty-conf.bb
new file mode 100644
index 0000000000..0b98e2e13e
--- /dev/null
+++ b/meta/recipes-graphics/emptty/emptty-conf.bb
@@ -0,0 +1,14 @@
+require emptty.inc
+
+SUMMARY += " (Default config)"
+
+do_configure[noexec] = "1"
+do_compile[noexec] = "1"
+
+do_install () {
+    oe_runmake -C ${S}/src/${GO_IMPORT} DESTDIR=${D} install-config
+}
+
+FILES:${PN} = "${sysconfdir}/emptty/conf"
+CONFFILES:${PN} = "${sysconfdir}/emptty/conf"
+RPROVIDES:${PN} += "virtual-emptty-conf"
diff --git a/meta/recipes-graphics/emptty/emptty.inc b/meta/recipes-graphics/emptty/emptty.inc
new file mode 100644
index 0000000000..d99c4d8c39
--- /dev/null
+++ b/meta/recipes-graphics/emptty/emptty.inc
@@ -0,0 +1,27 @@
+SUMMARY = "Dead simple CLI Display Manager on TTY"
+DESCRIPTION = "Emptty is a simple display manager with a command line greeter \
+It supports both X11 and Wayland sessions, exporting required variables and \
+creating user paths as necessary."
+
+HOMEPAGE = "https://github.com/tvrzna/emptty"
+BUGTRACKER = "https://github.com/tvrzna/emptty/issues"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://src/${GO_IMPORT}/LICENSE;md5=d1e4d12c7d1d17367ba5668706a405ba"
+
+S = "${UNPACKDIR}"
+
+FILESEXTRAPATHS:append = ":${THISDIR}/emptty"
+
+GO_IMPORT = "github.com/tvrzna/emptty"
+GO_IMPORT_pam = "github.com/msteinert/pam"
+SRC_URI = "\
+    git://${GO_IMPORT}.git;protocol=https;branch=master;destsuffix=src/${GO_IMPORT} \
+    git://${GO_IMPORT_pam}.git;protocol=https;branch=master;name=pam;destsuffix=src/${GO_IMPORT_pam} \
+    file://pamconf \
+    "
+SRCREV = "bb203ad0a224731a7a2ff50deeb342ab79c4af09"
+SRCREV_pam = "50ded1b0e7864b9bf75005eb945a8ec826bcf69d"
+
+SRCREV_FORMAT .= "_pam"
+
+PR = "r1"
diff --git a/meta/recipes-graphics/emptty/emptty/pamconf b/meta/recipes-graphics/emptty/emptty/pamconf
new file mode 100644
index 0000000000..9cbfd6c4a5
--- /dev/null
+++ b/meta/recipes-graphics/emptty/emptty/pamconf
@@ -0,0 +1,10 @@
+#%PAM-1.0
+auth            sufficient      pam_succeed_if.so user ingroup nopasswdlogin
+auth            include         common-auth
+-auth           optional        pam_gnome_keyring.so
+-auth           optional        pam_kwallet5.so
+account         include         common-account
+session         include         common-session
+-session        optional        pam_gnome_keyring.so auto_start
+-session        optional        pam_kwallet5.so auto_start force_run
+password        include         common-password
diff --git a/meta/recipes-graphics/emptty/emptty_0.15.0.bb b/meta/recipes-graphics/emptty/emptty_0.15.0.bb
new file mode 100644
index 0000000000..732bb45ff1
--- /dev/null
+++ b/meta/recipes-graphics/emptty/emptty_0.15.0.bb
@@ -0,0 +1,55 @@
+require emptty.inc
+
+PACKAGECONFIG ?= "${@bb.utils.filter('DISTRO_FEATURES', 'pam x11', d)}"
+PACKAGECONFIG[pam] = ",,libpam,pam-plugin-succeed-if"
+PACKAGECONFIG[x11] = ",,virtual/libx11,util-linux-mcookie"
+
+DEPENDS += "${@bb.utils.contains('PACKAGECONFIG', 'pam', '', 'virtual/crypt', d)}"
+
+GO_TAGS = ""
+GO_TAGS:append = "${@bb.utils.contains('PACKAGECONFIG', 'pam', '', ',nopam', d)}"
+GO_TAGS:append = "${@bb.utils.contains('PACKAGECONFIG', 'x11', '', ',noxlib', d)}"
+
+GOBUILDFLAGS:append = " -tags=${GO_TAGS}"
+
+export GO111MODULE = "off"
+
+inherit go
+
+DEPENDS += "gzip"
+
+do_install () {
+    # general collateral
+    install -Dm755 ${B}/${GO_BUILD_BINDIR}/emptty ${D}${bindir}/emptty
+    install -d ${D}${mandir}/man1
+    gzip -cn ${S}/src/${GO_IMPORT}/res/emptty.1 > ${D}${mandir}/man1/emptty.1.gz
+
+    # pam config
+    if "${@bb.utils.contains('PACKAGECONFIG','pam','true','false',d)}"
+    then
+        install -Dm644 ${S}/pamconf ${D}${sysconfdir}/pam.d/emptty
+    fi
+
+    # systemd init service
+    if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}
+    then
+        oe_runmake -C ${S}/src/${GO_IMPORT} DESTDIR=${D} install-systemd
+    fi
+}
+
+FILES:${PN} = "\
+    ${systemd_system_unitdir}/emptty.service \
+    ${bindir}/emptty \
+    ${mandir}/man1/emptty.1.gz \
+    ${sysconfdir}/pam.d/emptty \
+"
+
+RDEPENDS:${PN} += "virtual-emptty-conf"
+SYSTEMD_SERVICE:${PN} = "emptty.service"
+
+inherit systemd
+
+USERADD_PACKAGES = "${PN}"
+GROUPADD_PARAM:${PN} = "-r nopasswdlogin"
+
+inherit useradd
-- 
2.53.0