recipes/unionfs/unionroot_0.1.1.bb

   1 LICENSE = "GPL"
   2
   3 DESCRIPTION = "Provides an init script that changes the root file-system to unionfs."
   4 DEPENDS = "busybox base-files"
   5 RDEPENDS_${PN} = "busybox base-files"
   6 SECTION = "base"
   7 PRIORITY = "optional"
   8
   9 SRC_URI = "file://init.unionroot"
  10
  11 inherit update-alternatives
  12
  13 ALTERNATIVE_NAME = "init"
  14 ALTERNATIVE_LINK = "/sbin/init"
  15 ALTERNATIVE_PATH = "/sbin/init.unionroot"
  16 ALTERNATIVE_PRIORITY = "100"
  17
  18 do_install () {
  19         install -d ${D}${base_sbindir}
  20         install -m 0755 ${WORKDIR}/init.unionroot ${D}${base_sbindir}/
  21 }
  22
  23 pkg_postinst () {
  24         # Alter /etc/fstab
  25         mv $D/${sysconfdir}/fstab $D/${sysconfdir}/fstab.old
  26         awk 'BEGIN { print "# Altered by unionroot" }
  27                    { if ( $2 == "/" )
  28                      {
  29                         print $1 "\t/media/realroot\t" $3 "\t" $4 "\t" $5 "\t" $6
  30                      }
  31                      else
  32                      {
  33                         print $0
  34                      }
  35                    }' $D/${sysconfdir}/fstab.old > $D/${sysconfdir}/fstab
  36 }
  37