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|
#!@SH@
#
# +DIRS - reference-counted directory management script
#
# Usage: ./+DIRS ADD|REMOVE [metadatadir]
# ./+DIRS CHECK-ADD|CHECK-REMOVE
#
# This script supports two actions, ADD and REMOVE, that will add or
# remove the directories needed by the package associated with
# <metadatadir>. The CHECK-ADD action will check whether any directories
# needed by the package are missing, and print an informative message
# noting those directories. The CHECK-REMOVE action will check whether
# any directories needed by the package still exist, and print an
# informative message noting those directories. The CHECK-ADD and
# CHECK-REMOVE actions return non-zero if they detect either missing
# or existing directories, respectively.
#
# Lines starting with "# DIR: " are data read by this script that
# name the directories that this package requires to exist to function
# correctly, e.g.
#
# # DIR: /etc/foo m
# # DIR: /var/log/foo/tmp mo foo-user foo-group 0700
#
# The second field in each DIRS entry is a set of flags with the following
# meaning:
#
# m create (make) the directory when ADDing
# o directory is owned by the package
#
CAT="@CAT@"
CHGRP="@CHGRP@"
CHMOD="@CHMOD@"
CHOWN="@CHOWN@"
ECHO="@ECHO@"
GREP="@GREP@"
MKDIR="@MKDIR@"
MV="@MV@"
PWD_CMD="@PWD_CMD@"
RM="@RM@"
RMDIR="@RMDIR@"
SED="@SED@"
SORT="@SORT@"
TEST="@TEST@"
TRUE="@TRUE@"
SELF=$0
ACTION=$1
PKG_METADATA_DIR="${2-`${PWD_CMD}`}"
PKG_REFCOUNT_DBDIR="@PKG_REFCOUNT_DBDIR@"
: ${PKGNAME=${PKG_METADATA_DIR##*/}}
PKG_REFCOUNT_DIRS_DBDIR="${PKG_REFCOUNT_DBDIR}/dirs"
exitcode=0
case $ACTION in
ADD)
${SED} -n "/^\# DIR: /{s/^\# DIR: //;p;}" ${SELF} | ${SORT} -u |
while read dir d_flags d_user d_group d_mode; do
case $dir in
""|[!/]*) continue ;;
esac
case $d_flags in
*m*) ;;
*) continue ;;
esac
shadow_dir="${PKG_REFCOUNT_DIRS_DBDIR}$dir"
perms="$shadow_dir/+PERMISSIONS"
preexist="$shadow_dir/+PREEXISTING"
token="$shadow_dir/${PKGNAME}"
if ${TEST} ! -d "$shadow_dir"; then
${MKDIR} $shadow_dir
${TEST} -d "$dir" &&
${ECHO} "${PKGNAME}" > $preexist
fi
${MKDIR} $dir
if ${TEST} -f "$token" && \
${GREP} "^${PKG_METADATA_DIR}$" $token >/dev/null; then
:
else
${ECHO} "${PKG_METADATA_DIR}" >> $token
fi
case $d_user/$d_group/$d_mode in
[!/]*/[!/]*/[!/]*)
${ECHO} "$d_user $d_group $d_mode" > $perms
;;
esac
case $d_user/$d_group/$d_mode in
[!/]*/[!/]*/[!/]*)
${CHOWN} $d_user $dir
${CHGRP} $d_group $dir
${CHMOD} $d_mode $dir
;;
esac
done
;;
REMOVE)
${SED} -n "/^\# DIR: /{s/^\# DIR: //;p;}" ${SELF} | ${SORT} -ru |
while read dir d_flags d_user d_group d_mode; do
case $dir in
""|[!/]*) continue ;;
esac
case $d_flags in
*m*) ;;
*) continue ;;
esac
shadow_dir="${PKG_REFCOUNT_DIRS_DBDIR}$dir"
perms="$shadow_dir/+PERMISSIONS"
preexist="$shadow_dir/+PREEXISTING"
token="$shadow_dir/${PKGNAME}"
tokentmp="$token.tmp.$$"
if ${TEST} -f "$token" && \
${GREP} "^${PKG_METADATA_DIR}$" $token >/dev/null; then
${CAT} "$token" | ${GREP} -v "^${PKG_METADATA_DIR}$" > $tokentmp
case `${CAT} $tokentmp | ${SED} -n "$="` in
"")
${TEST} -f "$preexist" ||
{ ${RMDIR} -p $dir 2>/dev/null || ${TRUE}; }
${RM} -f $perms $preexist $token $token.tmp.*
${RMDIR} -p $shadow_dir 2>/dev/null || ${TRUE}
;;
*)
${MV} -f $tokentmp $token
;;
esac
fi
done
;;
CHECK-ADD)
${SED} -n "/^\# DIR: /{s/^\# DIR: //;p;}" ${SELF} | ${SORT} -u |
{ while read dir d_flags d_user d_group d_mode; do
case $dir in
""|[!/]*) continue ;;
*) ${TEST} -d "$dir" && continue ;;
esac
case $d_flags in
*m*) ;;
*) continue ;;
esac
case "$printed_header" in
yes) ;;
*) printed_header=yes
${ECHO} "==========================================================================="
${ECHO} "The following directories should be created for ${PKGNAME}:"
${ECHO} ""
;;
esac
case $d_user/$d_group/$d_mode in
[!/]*/[!/]*/[!/]*)
${ECHO} " $dir (o=$d_user, g=$d_group, m=$d_mode)"
;;
*)
${ECHO} " $dir"
;;
esac
done
case "$printed_header" in
yes) ${ECHO} ""
${ECHO} "==========================================================================="
exit 1
;;
esac; }
${TEST} $? -eq 0 || exitcode=1
;;
CHECK-REMOVE)
${SED} -n "/^\# DIR: /{s/^\# DIR: //;p;}" ${SELF} | ${SORT} -ru |
{ while read dir d_flags d_user d_group d_mode; do
case $dir in
""|[!/]*) continue ;;
*) ${TEST} -d "$dir" || continue ;;
esac
case $d_flags in
*o*) ;;
*) continue ;;
esac
shadow_dir="${PKG_REFCOUNT_DIRS_DBDIR}$dir"
${TEST} -d "$shadow_dir" && continue # refcount isn't zero
case "$printed_header" in
yes) ;;
*) printed_header=yes
${ECHO} "==========================================================================="
${ECHO} "The following directories are no longer being used by ${PKGNAME},"
${ECHO} "and they can be removed if no other packages are using them:"
${ECHO} ""
;;
esac
${ECHO} " $dir"
done
case "$printed_header" in
yes) ${ECHO} ""
${ECHO} "==========================================================================="
exit 1
;;
esac; }
${TEST} $? -eq 0 || exitcode=1
;;
*)
${ECHO} "Usage: ./+DIRS ADD|REMOVE [metadatadir]"
${ECHO} " ./+DIRS CHECK-ADD|CHECK-REMOVE"
;;
esac
exit $exitcode
|
