From e753a4d1af740a3cfeb4a4c994395f3a0a5a3c73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <cynerd@email.cz>
Date: Sun, 2 Sep 2018 22:55:51 +0200
Subject: alpine-amd64: try to change how we do chroot

---
 jobs/alpine-amd64.run | 63 +--------------------------------------------------
 jobs/alpine-amd64.sh  | 55 ++++++++++++++++++++++++++++++++++++++++++++
 scripts/uchroot       | 15 ++++++------
 3 files changed, 63 insertions(+), 70 deletions(-)
 create mode 100755 jobs/alpine-amd64.sh

diff --git a/jobs/alpine-amd64.run b/jobs/alpine-amd64.run
index 96bfb2b..80e8644 100755
--- a/jobs/alpine-amd64.run
+++ b/jobs/alpine-amd64.run
@@ -6,68 +6,7 @@ set -e
 if [ -n "$CLEAN" ]; then
 	echo_stage "Remove root"
 	flock --exclusive "$WORKSPACE/root.lock" uroot rm -rf "$WORKSPACE/root"
-	exit 0
 fi
 
-cat >abuild-system.conf <<EOF
-export CFLAGS="-Os -fomit-frame-pointer"
-export CXXFLAGS="\$CFLAGS"
-export CPPFLAGS="\$CFLAGS"
-export LDFLAGS="-Wl,--as-needed"
-
-export JOBS=4
-export MAKEFLAGS=-j\$JOBS
-
-USE_COLORS=1
-
-SRCDEST=/var/cache/distfiles
-REPODEST=\$HOME/packages/
-
-CLEANUP="srcdir bldroot pkgdir deps"
-ERROR_CLEANUP="bldroot deps"
-EOF
-
 export ROOT="$WORKSPACE/root"
-# TODO get latest uri from latest-releases.yml file
-flock --exclusive "$WORKSPACE/root.lock" /bin/sh -se <<EOF
-	. utils
-	if [ ! -d "$ROOT" ]; then
-		echo_stage "Setting up new root"
-		wget "http://dl-cdn.alpinelinux.org/alpine/edge/releases/x86_64/alpine-minirootfs-3.8.0-x86_64.tar.gz" -O alpine.tar.gz
-		gunzip alpine.tar.gz
-		tar -f alpine.tar --delete ./dev/null
-		mkdir "$ROOT"
-		uroot tar -xf alpine.tar -C "$ROOT"
-		chmod 755 "$ROOT" # This is intentional, tar changes access rights
-		uchroot "$ROOT" root /bin/sh -sxe <<EEOF
-			apk update
-			apk add alpine-sdk lua-aports
-			adduser -s /bin/sh -D build
-			addgroup build abuild
-			mkdir -p /var/cache/distfiles
-			chgrp abuild /var/cache/distfiles
-			chmod g+w /var/cache/distfiles
-EEOF
-		uchroot "$ROOT" build:build /bin/sh -sxe <<EEOF
-			cd && mkdir .abuild
-			echo 'PACKAGER_PRIVKEY="/home/build/.abuild/key.rsa"' > .abuild/abuild.conf
-EEOF
-		uroot cp ~/alpinelinux.rsa.key "$ROOT/home/build/.abuild/key.rsa"
-		uchroot "$ROOT" root chown build:build "/home/build/.abuild/key.rsa"
-		uroot cp ~/alpinelinux.rsa.key.pub "$ROOT/etc/apk/keys/cynerd@email.cz-5b8aeb6d.rsa.pub"
-		uroot cp abuild-system.conf "$ROOT/etc/abuild.conf"
-	fi
-
-	echo_stage "Update system"
-	uchroot "$ROOT" root /bin/sh -ce 'apk update && apk upgrade'
-
-	echo_stage "Update package sources"
-	git_clone "git@cynerd.cz:alpine-personal-pkgs" "aports"
-	uroot rm -rf "$ROOT/home/build/aports"
-	uroot mv aports "$ROOT/home/build/aports"
-	uchroot "$ROOT" root chown -R build:build /home/build/aports
-
-	echo_stage "Build packages"
-	# TODO generate list of repositories automatically
-	uchroot "$ROOT" build:build buildrepo --purge personal hacked
-EOF
+flock --exclusive "$WORKSPACE/root.lock" "$(readlink -f "$0" | sed 's/\.run$/\.sh/')"
diff --git a/jobs/alpine-amd64.sh b/jobs/alpine-amd64.sh
new file mode 100755
index 0000000..e5a6df3
--- /dev/null
+++ b/jobs/alpine-amd64.sh
@@ -0,0 +1,55 @@
+#!/bin/sh
+. utils
+
+# TODO get latest uri from latest-releases.yml file
+
+if [ ! -d "$ROOT" ]; then
+	echo_stage "Setting up new root"
+	wget "http://dl-cdn.alpinelinux.org/alpine/edge/releases/x86_64/alpine-minirootfs-3.8.0-x86_64.tar.gz" -O alpine.tar.gz
+	gunzip alpine.tar.gz
+	tar -f alpine.tar --delete ./dev/null
+	mkdir "$ROOT"
+	uroot tar -xf alpine.tar -C "$ROOT"
+	chmod 755 "$ROOT" # This is intentional, tar changes access rights
+	uchroot "$ROOT" root /bin/sh <<EOF
+		set -ex
+		apk update
+		apk add alpine-sdk lua-aports
+		adduser -s /bin/sh -D -h /build build
+		addgroup build abuild
+		mkdir -p /var/cache/distfiles
+		chgrp abuild /var/cache/distfiles
+		chmod g+w /var/cache/distfiles
+EOF
+	uchroot "$ROOT" build 'mkdir .abuild && echo "PACKAGER_PRIVKEY=\"/build/.abuild/cynerd@email.cz-5b8aeb6d.rsa\"" > .abuild/abuild.conf'
+	uroot cp ~/alpinelinux.rsa.key "$ROOT/build/.abuild/cynerd@email.cz-5b8aeb6d.rsa"
+	uchroot "$ROOT" root 'chown build:build "/build/.abuild/cynerd@email.cz-5b8aeb6d.rsa"'
+	uroot cp ~/alpinelinux.rsa.key.pub "$ROOT/etc/apk/keys/cynerd@email.cz-5b8aeb6d.rsa.pub"
+	uroot cat >"$ROOT/etc/abuild.conf" <<EOF
+export CFLAGS="-Os -fomit-frame-pointer"
+export CXXFLAGS="\$CFLAGS"
+export CPPFLAGS="\$CFLAGS"
+export LDFLAGS="-Wl,--as-needed"
+
+export JOBS=4
+export MAKEFLAGS=-j\$JOBS
+
+USE_COLORS=1
+
+SRCDEST=/var/cache/distfiles
+REPODEST=\$HOME/packages/
+
+CLEANUP="srcdir bldroot pkgdir deps"
+ERROR_CLEANUP="bldroot deps"
+EOF
+fi
+
+echo_stage "Update system"
+uchroot "$ROOT" root 'apk update && apk upgrade'
+
+echo_stage "Get packages source"
+git_clone "git@cynerd.cz:alpine-personal-pkgs" "$ROOT/aports"
+uchroot "$ROOT" root "rm -rf /build/aports && chown -R build:build /aports && mv /aports /build/aports"
+
+echo_stage "Build packages"
+uchroot "$ROOT" build buildrepo --purge $(ls "$ROOT/build/aports")
diff --git a/scripts/uchroot b/scripts/uchroot
index 6aa76b2..b11981a 100755
--- a/scripts/uchroot
+++ b/scripts/uchroot
@@ -1,7 +1,7 @@
 #!/bin/sh
 set -e
-[ $# -ge 2 ] || {
-	echo "Usage: uchroot ROOT USER[:GROUP] [CMD] [ARG].." >&2
+[ $# -ge 1 ] || {
+	echo "Usage: uchroot ROOT [USER] [CMD]" >&2
 	exit 1
 }
 
@@ -11,8 +11,10 @@ fi
 ###############################################################
 
 ROOT="$1"
-USERSPEC="$2"
+USR="${2:-root}"
 shift 2
+[ $# -lt 1 ] && CMD="" || CMD="-c '$@'"
+
 [ -d "$ROOT" ] || {
 	echo "There is no such directory: $ROOT" >&2
 	exit 1
@@ -22,14 +24,11 @@ shift 2
 	exit 1
 }
 
-
+mount --rbind "$ROOT" "$ROOT"
 mount -t proc none "$ROOT/proc"
 mount --rbind /dev "$ROOT/dev"
 mount --rbind /sys "$ROOT/sys"
 cp -f /etc/resolv.conf "$ROOT/etc/resolv.conf"
 cp -f /etc/hosts "$ROOT/etc/hosts"
 
-if [ $# -lt 1 ]; then
-	set "/bin/sh"
-fi
-exec chroot --userspec="$USERSPEC" "$ROOT" "$@"
+exec chroot "$ROOT" /bin/sh -c ". /etc/profile && exec su $CMD -l $USR" "$0"
-- 
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