main/mkinitfs: fix mount relocation

1 files changed, 75 insertions, 28 deletions

diff --git a/main/mkinitfs/git.patch b/main/mkinitfs/git.patch
index a1ba95cbe0..14842a85e9 100644
--- a/main/mkinitfs/git.patch
+++ b/main/mkinitfs/git.patch
@@ -239,7 +239,7 @@ index fa74c10..b0e6c22 100644
  kernel/drivers/virtio
 +kernel/drivers/net/virtio_net*
 diff --git a/initramfs-init.in b/initramfs-init.in
-index 934fe92..0834175 100755
+index 934fe92..cdf50b9 100755
 --- a/initramfs-init.in
 +++ b/initramfs-init.in
 @@ -7,7 +7,7 @@ sysroot=/sysroot
@@ -290,7 +290,49 @@ index 934fe92..0834175 100755
  	apk add --quiet --initdb --repositories-file /tmp/repositories openssl\
  		|| return 1
  
-@@ -136,66 +111,12 @@ find_mnt() {
+@@ -110,92 +85,35 @@ unpack_apkovl() {
+ # find mount dir for given device in an fstab
+ # returns global MNTOPTS
+ find_mnt() {
+-	local search_dev="$1" fstab="$2"
+-	MNTOPTS=
+-	[ -r "$fstab" ] || return 1
+-	local dev mnt fs chk
++	local search_dev="$1"
++	local fstab="$2"
+ 	case "$search_dev" in
+-		UUID=*|LABEL=*|/dev/*);;
+-		*) search_dev=/dev/$search_dev;;
++	UUID*|LABEL*) search_dev=$(findfs "$search_dev");;
+ 	esac
+-	local search_real_dev=$(resolve_dev $search_dev)
++	MNTOPTS=
++	[ -r "$fstab" ] || return 1
++	local search_maj_min=$(stat -L -c '%t,%T' $search_dev)
+ 	while read dev mnt fs MNTOPTS chk; do
+-		local real_dev=$(resolve_dev $dev)
+-		local i j
+-		for i in "$search_dev" "$search_real_dev"; do
+-			[ -z "$i" ] && continue
+-			for j in "$dev" "$real_dev"; do
+-				[ -z "$j" ] && continue
+-				if [ "$i" = "$j" ]; then
+-					echo "$mnt"
+-					return
+-				fi
+-			done
+-		done
++		case "$dev" in
++		UUID*|LABEL*) dev=$(findfs "$dev");;
++		esac
++		if [ -b "$dev" ]; then
++			local maj_min=$(stat -L -c '%t,%T' $dev)
++			if [ "$maj_min" = "$search_maj_min" ]; then
++				echo "$mnt"
++				return
++			fi
++		fi
+ 	done < $fstab
  	MNTOPTS=
  }
  
@@ -357,7 +399,7 @@ index 934fe92..0834175 100755
  setup_inittab_console(){
  	while [ $# -gt 0 ]; do
  		local tty=${1%,*}
-@@ -225,44 +146,6 @@ setup_inittab_console(){
+@@ -225,44 +143,6 @@ setup_inittab_console(){
  	done
  }
  
@@ -402,7 +444,7 @@ index 934fe92..0834175 100755
  # determine the default interface to use if ip=dhcp is set
  # uses the first "eth" interface.
  ip_choose_if() {
-@@ -332,10 +215,6 @@ configure_ip() {
+@@ -332,10 +212,6 @@ configure_ip() {
  		ip_set "$device" "$client_ip" "$netmask" "$gw_ip"
  		eend $?
  	fi
@@ -413,7 +455,7 @@ index 934fe92..0834175 100755
  }
  
  # resolve an uuid or symlink to the real device
-@@ -346,37 +225,23 @@ resolve_dev() {
+@@ -346,37 +222,27 @@ resolve_dev() {
  	esac
  }
  
@@ -422,16 +464,21 @@ index 934fe92..0834175 100755
 -	local fstab="$1"
 -	local mnt=$(find_mnt $ALPINE_DEV $fstab)
 -	if [ -n "$mnt" ] && [ "$ALPINE_MNT" != "$mnt" ]; then
+-		mkdir -p "$mnt"
+-		mount -o move $ALPINE_MNT $mnt
+-		ALPINE_MNT=$mnt
 +# relocate mountpoint according given fstab
 +relocate_mount() {
-+	local dir="${1%%/}"
++	local dir="${1}"
 +	local fstab="$2"
-+	local mnt=$(find_mnt $dir $fstab)
-+	if [ -n "$mnt" ] && [ "$dir" != "$mnt" ]; then
- 		mkdir -p "$mnt"
--		mount -o move $ALPINE_MNT $mnt
--		ALPINE_MNT=$mnt
-+		mount -o move "$dir" "$mnt"
++	local dev=$(df -P "$dir" | tail -1 | awk '{print $1}')
++	local mnt=$(find_mnt $dev $fstab)
++	if [ -n "$mnt" ]; then
++		local oldmnt=$(awk -v d=$dev '$1==d {print $2}' /proc/mounts)
++		if [ "$oldmnt" != "$mnt" ]; then
++			mkdir -p "$mnt"
++			mount -o move "$oldmnt" "$mnt"
++		fi
  	fi
  }
  
@@ -459,7 +506,7 @@ index 934fe92..0834175 100755
  			| sed 's:/.boot_repository$::'
  	fi
  }
-@@ -438,63 +303,14 @@ if [ "$KOPT_dma" = no ]; then
+@@ -438,63 +304,14 @@ if [ "$KOPT_dma" = no ]; then
  	modprobe libata dma=0
  fi
  
@@ -524,7 +571,7 @@ index 934fe92..0834175 100755
  
  # optional blacklist
  for i in ${KOPT_blacklist/,/ }; do
-@@ -502,12 +318,8 @@ for i in ${KOPT_blacklist/,/ }; do
+@@ -502,12 +319,8 @@ for i in ${KOPT_blacklist/,/ }; do
  done
  
  # setup /dev
@@ -537,7 +584,7 @@ index 934fe92..0834175 100755
  [ -d /dev/pts ] || mkdir -m 755 /dev/pts
  [ -c /dev/ptmx ] || mknod -m 666 /dev/ptmx c 5 2
  # make sure /dev/null is setup correctly
-@@ -516,7 +328,6 @@ RC=$?
+@@ -516,7 +329,6 @@ RC=$?
  mount -t devpts -o gid=5,mode=0620,noexec,nosuid devpts /dev/pts
  [ -d /dev/shm ] || mkdir /dev/shm
  mount -t tmpfs -o nodev,nosuid,noexec shm /dev/shm
@@ -545,7 +592,7 @@ index 934fe92..0834175 100755
  
  # load available drivers to get access to modloop media
  ebegin "Loading boot drivers"
-@@ -528,34 +339,36 @@ if [ -f /etc/modules ] ; then
+@@ -528,34 +340,36 @@ if [ -f /etc/modules ] ; then
  		modprobe -q $module $args
  	done
  fi
@@ -595,7 +642,7 @@ index 934fe92..0834175 100755
  	fi
  
  	eend $?
-@@ -571,35 +384,11 @@ if [ -n "$KOPT_root" ]; then
+@@ -571,35 +385,11 @@ if [ -n "$KOPT_root" ]; then
  	exec /bin/busybox sh
  fi
  
@@ -634,7 +681,7 @@ index 934fe92..0834175 100755
  eend $?
  
  # early console?
-@@ -620,27 +409,24 @@ fi
+@@ -620,27 +410,24 @@ fi
  
  mount -t tmpfs -o $rootflags tmpfs $sysroot
  
@@ -674,7 +721,7 @@ index 934fe92..0834175 100755
  		;;
  esac
  
-@@ -660,26 +446,16 @@ if [ -f "$ovl" ]; then
+@@ -660,26 +447,16 @@ if [ -f "$ovl" ]; then
  	eend $? $errstr || ovlfiles=
  	# hack, incase /root/.ssh was included in apkovl
  	[ -d "$sysroot/root" ] && chmod 700 "$sysroot/root"
@@ -705,7 +752,7 @@ index 934fe92..0834175 100755
  
  	rc_add hwclock boot
  	rc_add modules boot
-@@ -695,17 +471,24 @@ if [ -f "$sysroot/etc/.default_boot_services" -o ! -f "$ovl" ]; then
+@@ -695,17 +472,24 @@ if [ -f "$sysroot/etc/.default_boot_services" -o ! -f "$ovl" ]; then
  	rm -f "$sysroot/etc/.default_boot_services"
  fi
  
@@ -736,7 +783,7 @@ index 934fe92..0834175 100755
  	eend 0
  else
  	KOPT_splash="no"
-@@ -723,13 +506,13 @@ if [ -f $sysroot/etc/fstab ]; then
+@@ -723,13 +507,13 @@ if [ -f $sysroot/etc/fstab ]; then
  	# move the ALPINE_MNT if ALPINE_DEV is specified in users fstab
  	# this is so a generated /etc/apk/repositories will use correct
  	# mount dir
@@ -748,15 +795,15 @@ index 934fe92..0834175 100755
 -rc_add modloop sysinit
  
 +	if [ -e /tmp/repositores ]; then
-+		cut -d/ -f1-3 < /tmp/repositories | while read dir; do
++		while read dir; do
 +			relocate_mount "$dir" "$sysroot"/etc/fstab
-+		done
++		done < /tmp/repositories
 +	fi
 +fi
  
  # hack so we get openrc
  pkgs="$pkgs alpine-base"
-@@ -776,11 +559,16 @@ if [ "$KOPT_keep_apk_new" != yes ]; then
+@@ -776,11 +560,16 @@ if [ "$KOPT_keep_apk_new" != yes ]; then
  	apkflags="$apkflags --clean-protected"
  	[ -n "$ovlfiles" ] && apkflags="$apkflags --overlay-from-stdin"
  fi
@@ -773,7 +820,7 @@ index 934fe92..0834175 100755
  eend $?
  
  # unmount ovl mount if needed
-@@ -788,9 +576,11 @@ if [ -n "$ovl_unmount" ]; then
+@@ -788,9 +577,11 @@ if [ -n "$ovl_unmount" ]; then
  	umount $ovl_unmount 2>/dev/null
  fi
  
@@ -782,13 +829,13 @@ index 934fe92..0834175 100755
 -	relocate_alpine_mnt "$sysroot"/etc/fstab
 +# remount according default fstab from package
 +if [ -z "$has_fstab" ] && [ -f "$sysroot"/etc/fstab ] && [ -f /tmp/repositories ]; then
-+	cut -d/ -f1-3 < /tmp/repositories | while read dir; do
++	while read dir; do
 +		relocate_mount "$dir" "$sysroot"/etc/fstab
-+	done
++	done < /tmp/repositories
  fi
  
  # generate repositories if none exists. this needs to be done after relocation
-@@ -810,10 +600,10 @@ fi
+@@ -810,10 +601,10 @@ fi
  setup_inittab_console $CONSOLE
  
  # copy alpine release info