[OE-core] [PATCH 1/2] busybox: Add support for busybox-init
Khem Raj
raj.khem at gmail.com
Fri Jan 22 20:49:09 UTC 2016
in config metadata we can configure busybox based init and device
initializer ( mdev ) using e.g.
VIRTUAL-RUNTIME_dev_manager = "busybox-mdev"
VIRTUAL-RUNTIME_login_manager = "busybox"
VIRTUAL-RUNTIME_init_manager = "busybox"
VIRTUAL-RUNTIME_initscripts = "initscripts"
VIRTUAL-RUNTIME_keymaps = "keymaps"
DISTRO_FEATURES_BACKFILL_CONSIDERED += "sysvinit"
busybox can be used to provide init system
combined with mdev it makes it a complete init
system for really tiny systems.
This patch uses above defines to configure features in busybox to enable
the init system and mdev in a configurable manner
Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
meta/recipes-core/busybox/busybox.inc | 15 +++++++++++++++
meta/recipes-core/busybox/busybox/init.cfg | 3 +++
meta/recipes-core/busybox/busybox/mdev.cfg | 11 +++++++++++
meta/recipes-core/busybox/busybox_1.24.1.bb | 6 ++++++
meta/recipes-core/busybox/files/inittab | 24 ++++++++++++++++++++++++
meta/recipes-core/busybox/files/rcK | 25 +++++++++++++++++++++++++
meta/recipes-core/busybox/files/rcS | 26 ++++++++++++++++++++++++++
meta/recipes-core/busybox/files/runlevel | 11 +++++++++++
8 files changed, 121 insertions(+)
create mode 100644 meta/recipes-core/busybox/busybox/init.cfg
create mode 100644 meta/recipes-core/busybox/busybox/mdev.cfg
create mode 100644 meta/recipes-core/busybox/files/inittab
create mode 100644 meta/recipes-core/busybox/files/rcK
create mode 100644 meta/recipes-core/busybox/files/rcS
create mode 100644 meta/recipes-core/busybox/files/runlevel
diff --git a/meta/recipes-core/busybox/busybox.inc b/meta/recipes-core/busybox/busybox.inc
index 9541123..e5710f0 100644
--- a/meta/recipes-core/busybox/busybox.inc
+++ b/meta/recipes-core/busybox/busybox.inc
@@ -275,6 +275,21 @@ do_install () {
install -m 0755 ${WORKDIR}/mdev-mount.sh ${D}${sysconfdir}/mdev
fi
fi
+ if grep "CONFIG_INIT=y" ${B}/.config; then
+ install -D -m 0777 ${WORKDIR}/rcS ${D}${sysconfdir}/init.d/rcS
+ install -D -m 0777 ${WORKDIR}/rcK ${D}${sysconfdir}/init.d/rcK
+ install -D -m 0755 ${WORKDIR}/runlevel ${D}${base_sbindir}/runlevel
+ if grep "CONFIG_FEATURE_USE_INITTAB=y" ${B}/.config; then
+ install -D -m 0777 ${WORKDIR}/inittab ${D}${sysconfdir}/inittab
+ tmp="${SERIAL_CONSOLES}"
+ for i in $tmp
+ do
+ j=`echo ${i} | sed s/\;/\ /g`
+ label=`echo ${i} | sed -e 's/tty//' -e 's/^.*;//' -e 's/;.*//'`
+ echo "tty$label::respawn:${base_sbindir}/getty ${j}" >> ${D}${sysconfdir}/inittab
+ done
+ fi
+ fi
if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then
if grep -q "CONFIG_SYSLOGD=y" ${B}/.config; then
diff --git a/meta/recipes-core/busybox/busybox/init.cfg b/meta/recipes-core/busybox/busybox/init.cfg
new file mode 100644
index 0000000..006d4c6
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/init.cfg
@@ -0,0 +1,3 @@
+CONFIG_INIT=y
+CONFIG_FEATURE_USE_INITTAB=y
+
diff --git a/meta/recipes-core/busybox/busybox/mdev.cfg b/meta/recipes-core/busybox/busybox/mdev.cfg
new file mode 100644
index 0000000..6aefe90
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/mdev.cfg
@@ -0,0 +1,11 @@
+CONFIG_MDEV=y
+CONFIG_FEATURE_MDEV_CONF=y
+CONFIG_FEATURE_MDEV_RENAME=y
+CONFIG_FEATURE_MDEV_RENAME_REGEXP=y
+CONFIG_FEATURE_MDEV_EXEC=y
+CONFIG_FEATURE_MDEV_LOAD_FIRMWARE=y
+
+CONFIG_SETSID=y
+CONFIG_CTTYHACK=y
+
+CONFIG_FEATURE_SHADOWPASSWDS=y
diff --git a/meta/recipes-core/busybox/busybox_1.24.1.bb b/meta/recipes-core/busybox/busybox_1.24.1.bb
index 5e19d9c..8adee53 100644
--- a/meta/recipes-core/busybox/busybox_1.24.1.bb
+++ b/meta/recipes-core/busybox/busybox_1.24.1.bb
@@ -39,6 +39,12 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
file://sha256sum.cfg \
file://getopts.cfg \
file://resize.cfg \
+ ${@["", "file://init.cfg"][(d.getVar('VIRTUAL-RUNTIME_init_manager', True) == 'busybox')]} \
+ ${@["", "file://mdev.cfg"][(d.getVar('VIRTUAL-RUNTIME_dev_manager', True) == 'busybox-mdev')]} \
+ file://inittab \
+ file://rcS \
+ file://rcK \
+ file://runlevel \
"
SRC_URI_append_libc-musl = " file://musl.cfg "
diff --git a/meta/recipes-core/busybox/files/inittab b/meta/recipes-core/busybox/files/inittab
new file mode 100644
index 0000000..bfec4a7
--- /dev/null
+++ b/meta/recipes-core/busybox/files/inittab
@@ -0,0 +1,24 @@
+# This is run first except when booting in single-user mode.
+
+# Startup the system
+null::sysinit:/bin/mount -t proc proc /proc
+null::sysinit:/bin/mount -t sysfs sysfs /sys
+null::sysinit:/bin/mount -t devtmpfs devtmpfs /dev
+null::sysinit:/bin/mount -o remount,rw /
+null::sysinit:/bin/mkdir -p /dev/pts
+null::sysinit:/bin/mount -t devpts devpts /dev/pts
+null::sysinit:/bin/mount -a
+
+::sysinit:/etc/init.d/rcS
+
+# Stuff to do before rebooting
+::ctrlaltdel:/sbin/reboot
+::shutdown:/etc/init.d/rcK
+::shutdown:/sbin/swapoff -a
+::shutdown:/bin/umount -a -r
+
+# Stuff to do when restarting the init process
+::restart:/sbin/init
+
+# set hostname
+null::sysinit:/bin/busybox hostname -F /etc/hostname
diff --git a/meta/recipes-core/busybox/files/rcK b/meta/recipes-core/busybox/files/rcK
new file mode 100644
index 0000000..050086e
--- /dev/null
+++ b/meta/recipes-core/busybox/files/rcK
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# Stop all init scripts in /etc/init.d
+# executing them in reversed numerical order.
+#
+for i in /etc/rc6.d/K??*; do
+ # Ignore dangling symlinks (if any).
+ [ ! -f "$i" ] && continue
+
+ case "$i" in
+ *.sh)
+ # Source shell script for speed.
+ (
+ trap - INT QUIT TSTP
+ set stop
+ . $i
+ )
+ ;;
+ *)
+ # No sh extension, so fork subprocess.
+ $i stop
+ ;;
+ esac
+done
+
diff --git a/meta/recipes-core/busybox/files/rcS b/meta/recipes-core/busybox/files/rcS
new file mode 100644
index 0000000..d18c26b
--- /dev/null
+++ b/meta/recipes-core/busybox/files/rcS
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+# Stop all init scripts in /etc/init.d
+# executing them in reversed numerical order.
+#
+
+for i in /etc/rcS.d/S??* /etc/rc5.d/S??* ;do
+ # Ignore dangling symlinks (if any).
+ [ ! -f "$i" ] && continue
+
+ case "$i" in
+ *.sh)
+ # Source shell script for speed.
+ (
+ trap - INT QUIT TSTP
+ set stop
+ . $i
+ )
+ ;;
+ *)
+ # No sh extension, so fork subprocess.
+ $i start
+ ;;
+ esac
+done
+
diff --git a/meta/recipes-core/busybox/files/runlevel b/meta/recipes-core/busybox/files/runlevel
new file mode 100644
index 0000000..866f3b5
--- /dev/null
+++ b/meta/recipes-core/busybox/files/runlevel
@@ -0,0 +1,11 @@
+#!/bin/sh
+# busybox init does not have LSB ( sysvinit ) like initlevels
+# so lets fake it to 5 which is what we default anyway
+# this helps with opkg post installs where it tries to invoke
+# update-rc.d ad post install step.
+# for package upgrades
+# See code in update-rc.d around line 190 where it calls runlevel
+# program
+#
+echo "5"
+
--
2.7.0
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