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authorJan Alexander Steffens (heftig) <jan.steffens@gmail.com>2016-04-20 19:36:54 +0200
committerJan Alexander Steffens (heftig) <jan.steffens@gmail.com>2016-05-28 12:30:36 +0200
commitca819a23579114f57476a609314efbe7d1bf2aea (patch)
treeac5c6f320a6050b8b3b512bb225ea6db417e25a4
parenteb88a303b7d3e3f829800e36e543df9a7dd5d6e2 (diff)
downloaddevtools32-ca819a23579114f57476a609314efbe7d1bf2aea.tar.xz
makechrootpkg: Simplify chroot preparation (v2)
Copy both UID and primary GID of the invoker to the builduser. Mount srcdest and startdir read-write. v2: Fixed GnuPG keyring owner and moved running namcap from a heredoc to a function.
-rw-r--r--makechrootpkg.in144
1 files changed, 43 insertions, 101 deletions
diff --git a/makechrootpkg.in b/makechrootpkg.in
index 9cb25fc..9534c54 100644
--- a/makechrootpkg.in
+++ b/makechrootpkg.in
@@ -148,67 +148,38 @@ install_packages() {
prepare_chroot() {
$repack || rm -rf "$copydir/build"
- mkdir -p "$copydir/build"
- if ! grep -q 'BUILDDIR="/build"' "$copydir/etc/makepkg.conf"; then
- echo 'BUILDDIR="/build"' >> "$copydir/etc/makepkg.conf"
- fi
-
- # Read .makepkg.conf and gnupg pubring
- if [[ -r $USER_HOME/.gnupg/pubring.kbx ]]; then
- install -D "$USER_HOME/.gnupg/pubring.kbx" "$copydir/build/.gnupg/pubring.kbx"
- fi
- if [[ -r $USER_HOME/.gnupg/pubring.gpg ]]; then
- install -D "$USER_HOME/.gnupg/pubring.gpg" "$copydir/build/.gnupg/pubring.gpg"
- fi
-
- mkdir -p "$copydir/pkgdest"
- if ! grep -q 'PKGDEST="/pkgdest"' "$copydir/etc/makepkg.conf"; then
- echo 'PKGDEST="/pkgdest"' >> "$copydir/etc/makepkg.conf"
- fi
-
- mkdir -p "$copydir/srcpkgdest"
- if ! grep -q 'SRCPKGDEST="/srcpkgdest"' "$copydir/etc/makepkg.conf"; then
- echo 'SRCPKGDEST="/srcpkgdest"' >> "$copydir/etc/makepkg.conf"
- fi
-
- mkdir -p "$copydir/logdest"
- if ! grep -q 'LOGDEST="/logdest"' "$copydir/etc/makepkg.conf"; then
- echo 'LOGDEST="/logdest"' >> "$copydir/etc/makepkg.conf"
- fi
-
- # These two get bind-mounted read-only
- # XXX: makepkg dislikes having these dirs read-only, so separate them
- mkdir -p "$copydir/startdir" "$copydir/startdir_host"
- mkdir -p "$copydir/srcdest" "$copydir/srcdest_host"
- if ! grep -q 'SRCDEST="/srcdest"' "$copydir/etc/makepkg.conf"; then
- echo 'SRCDEST="/srcdest"' >> "$copydir/etc/makepkg.conf"
- fi
-
- builduser_uid=${SUDO_UID:-$UID}
+ local builduser_uid="${SUDO_UID:-$UID}"
+ local builduser_gid="$(id -g "$builduser_uid")"
+ local install="install -o $builduser_uid -g $builduser_gid"
+ local x
# We can't use useradd without chrooting, otherwise it invokes PAM modules
# which we might not be able to load (i.e. when building i686 packages on
# an x86_64 host).
- printf 'builduser:x:%d:100:builduser:/build:/bin/bash\n' "$builduser_uid" >>"$copydir/etc/passwd"
- chown -R "$builduser_uid" "$copydir"/{build,pkgdest,srcpkgdest,logdest,srcdest,startdir}
+ sed -e '/^builduser:/d' -i "$copydir"/etc/{passwd,group}
+ printf >>"$copydir/etc/group" 'builduser:x:%d:\n' $builduser_gid
+ printf >>"$copydir/etc/passwd" 'builduser:x:%d:%d:builduser:/build:/bin/bash\n' $builduser_uid $builduser_gid
- if [[ -n $MAKEFLAGS ]]; then
- sed -i '/^MAKEFLAGS=/d' "$copydir/etc/makepkg.conf"
- echo "MAKEFLAGS='${MAKEFLAGS}'" >> "$copydir/etc/makepkg.conf"
- fi
+ $install -d "$copydir"/{build,build/.gnupg,startdir,{pkg,srcpkg,src,log}dest}
- if [[ -n $PACKAGER ]]; then
- sed -i '/^PACKAGER=/d' "$copydir/etc/makepkg.conf"
- echo "PACKAGER='${PACKAGER}'" >> "$copydir/etc/makepkg.conf"
- fi
+ for x in .gnupg/pubring.{kbx,gpg}; do
+ [[ -r $USER_HOME/$x ]] || continue
+ $install -m 644 "$USER_HOME/$x" "$copydir/build/$x"
+ done
+
+ sed -e '/^MAKEFLAGS=/d' -e '/^PACKAGER=/d' -i "$copydir/etc/makepkg.conf"
+ for x in BUILDDIR=/build PKGDEST=/pkgdest SRCPKGDEST=/srcpkgdest SRCDEST=/srcdest LOGDEST=/logdest \
+ "MAKEFLAGS='$MAKEFLAGS'" "PACKAGER='$PACKAGER'"
+ do
+ grep -q "^$x" "$copydir/etc/makepkg.conf" && continue
+ echo "$x" >>"$copydir/etc/makepkg.conf"
+ done
- if [[ ! -f $copydir/etc/sudoers.d/builduser-pacman ]]; then
- cat > "$copydir/etc/sudoers.d/builduser-pacman" <<EOF
+ cat > "$copydir/etc/sudoers.d/builduser-pacman" <<EOF
Defaults env_keep += "HOME"
builduser ALL = NOPASSWD: /usr/bin/pacman
EOF
- chmod 440 "$copydir/etc/sudoers.d/builduser-pacman"
- fi
+ chmod 440 "$copydir/etc/sudoers.d/builduser-pacman"
# This is a little gross, but this way the script is recreated every time in the
# working copy
@@ -220,18 +191,30 @@ EOF
printf ' || exit\n'
if $run_namcap; then
- cat <<'EOF'
-pacman -S --needed --noconfirm namcap
-for pkgfile in /startdir/PKGBUILD /pkgdest/*; do
- echo "Checking ${pkgfile##*/}"
- sudo -u builduser namcap "$pkgfile" 2>&1 | tee "/logdest/${pkgfile##*/}-namcap.log"
-done
-EOF
+ declare -f _chrootnamcap
+ printf '_chrootnamcap || exit\n'
fi
} >"$copydir/chrootbuild"
chmod +x "$copydir/chrootbuild"
}
+# These functions aren't run in makechrootpkg,
+# so no global variables
+_chrootbuild() {
+ . /etc/profile
+ export HOME=/build
+ cd /startdir
+ sudo -u builduser makepkg "$@"
+}
+
+_chrootnamcap() {
+ pacman -S --needed --noconfirm namcap
+ for pkgfile in /startdir/PKGBUILD /pkgdest/*; do
+ echo "Checking ${pkgfile##*/}"
+ sudo -u builduser namcap "$pkgfile" 2>&1 | tee "/logdest/${pkgfile##*/}-namcap.log"
+ done
+}
+
download_sources() {
local builddir="$(mktemp -d)"
chmod 1777 "$builddir"
@@ -251,47 +234,6 @@ download_sources() {
rm -rf $builddir
}
-_chrootbuild() {
- # This function isn't run in makechrootpkg,
- # so no global variables
-
- . /etc/profile
- export HOME=/build
- shopt -s nullglob
-
- # XXX: Workaround makepkg disliking read-only dirs
- ln -sft /srcdest /srcdest_host/*
- ln -sft /startdir /startdir_host/*
-
- # XXX: Keep bzr and svn sources writable
- # Since makepkg 4.1.1 they get checked out via cp -a, copying the symlink
- for dir in /srcdest /startdir; do
- for vcs in bzr svn; do
- cd "$dir"
- for vcsdir in */.$vcs; do
- rm "${vcsdir%/.$vcs}"
- cp -a "${dir}_host/${vcsdir%/.$vcs}" .
- chown -R builduser "${vcsdir%/.$vcs}"
- done
- done
- done
-
- cd /startdir
-
- # XXX: Keep PKGBUILD writable for pkgver()
- rm PKGBUILD*
- cp /startdir_host/PKGBUILD* .
- chown builduser PKGBUILD*
-
- # Safety check
- if [[ ! -w PKGBUILD ]]; then
- echo "Can't write to PKGBUILD!"
- exit 1
- fi
-
- sudo -u builduser makepkg "$@"
-}
-
move_products() {
for pkgfile in "$copydir"/pkgdest/*; do
chown "$src_owner" "$pkgfile"
@@ -389,8 +331,8 @@ download_sources
prepare_chroot
if arch-nspawn "$copydir" \
- --bind-ro="$PWD:/startdir_host" \
- --bind-ro="$SRCDEST:/srcdest_host" \
+ --bind="$PWD:/startdir" \
+ --bind="$SRCDEST:/srcdest" \
"${bindmounts_ro[@]}" "${bindmounts_rw[@]}" \
/chrootbuild
then