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#!/bin/bash
#
# Copyright (C) 2008, 2009 by Marc Kleine-Budde <mkl@pengutronix.de>
#
# See CREDITS for details about who has contributed to this project.
#
# For further information about the PTXdist project and license conditions
# see the README file.
#
ptxd_make_image_fix_permissions_generate() {
case "${kind}" in
n)
# erase existing nodes
cat >&3 <<EOF
echo "creating device node: ${file##${PTXDIST_WORKSPACE}/}"
rm -rf -- "${file}" &&
mknod -- "${file}" ${type} ${major_should} ${minor_should} &&
chown -- ${uid_should}\:${gid_should} "${file}" &&
chmod -- ${prm_should} "${file}" || exit
EOF
;;
l)
;;
esac
}
export -f ptxd_make_image_fix_permissions_generate
ptxd_make_image_fix_permissions_check() {
local workdir="${1}"
local ifs_orig="${IFS}"
IFS=":"
# just care about dev-nodes, for now
egrep -h "^[n]:" "${ptxd_reply_perm_files[@]}" |
while read kind file uid_should gid_should prm_should type major_should minor_should; do
local fixup=false
file="${workdir}/${file#/}"
if [ \! -e "${file}" ]; then
fixup=true
else
local uid_is gid_is prm_is
eval $(stat -c"uid_is=%u gid_is=%g prm_is=%a" "${file}")
# check user/group and permissions
if [ \
${uid_is} -ne ${uid_should} -o \
${gid_is} -ne ${gid_should} -o \
0${prm_is} -ne 0${prm_should} ]; then
fixup=true
# for dev-nodes and pipes
elif [ "${kind}" = "n" ]; then
if [ \
"${type}" = "p" -a ! -p "${file}" -o \
"${type}" = "c" -a ! -c "${file}" -o \
"${type}" = "b" -a ! -b "${file}" ]; then
fixup=true
# for dev-nodes check major/minor
elif [ "${type}" != "p" ]; then
local major_is minor_is
eval $(stat -c"major_is=0x%t minor_is=0x%T" "${file}")
# convert from hex to dec
major_is=$(( major_is ))
minor_is=$(( minor_is ))
if [ \
${major_is} -ne ${major_should} -o \
${minor_is} -ne ${minor_should} ]; then
fixup=true
fi
fi
fi
fi
if [ "${fixup}" = "true" ]; then
ptxd_make_image_fix_permissions_generate
fi
done
IFS="${ifs_orig}"
}
export -f ptxd_make_image_fix_permissions_check
#
# ptxd_make_image_fix_permissions - create device nodes in nfsroots
#
ptxd_make_image_fix_permissions() {
ptxd_make_image_init &&
local fixscript="${PTXDIST_TEMPDIR}/${FUNCNAME}" &&
touch "${fixscript}" &&
chmod +x "${fixscript}" &&
# get permission files
local -a ptxd_reply_ipkg_file ptxd_reply_perm_files &&
ptxd_get_ipkg_files ${image_pkgs_selected_target} || return
set -- "${ptx_nfsroot}" "${ptx_nfsroot_dbg}"
exec 3> "${fixscript}"
while [ ${#} -ne 0 ]; do
ptxd_make_image_fix_permissions_check "${1}" || return
shift
done
exec 3>&-
# nothing to do!
if [ \! -s "${fixscript}" ]; then
return
fi
cat <<EOF
-------------------------------------------------------------------
For a proper NFS-root environment, some device nodes are essential.
In order to create them root privileges are required.
-------------------------------------------------------------------
EOF
read -t 5 -p "(Please press enter to start 'sudo' to gain root privileges.)"
if [ ${?} -ne 0 ]; then
cat >&2 <<EOF
WARNING: NFS-root might not be working correctly!
EOF
return
fi
if ! sudo "${fixscript}"; then
cat <<EOF
error: creation of device node(s) failed.
EOF
return 1
fi
echo
}
export -f ptxd_make_image_fix_permissions
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