| #!/bin/bash |
| |
| # |
| # Copyright (C) 2007 Karel Zak <kzak@redhat.com> |
| # |
| # This file is part of util-linux. |
| # |
| # This file is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This file is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| TS_TOPDIR="${0%/*}/../.." |
| TS_DESC="move" |
| |
| . $TS_TOPDIR/functions.sh |
| ts_init "$*" |
| |
| ts_check_test_command "$TS_CMD_MOUNT" |
| ts_check_test_command "$TS_CMD_UMOUNT" |
| ts_check_test_command "$TS_CMD_FINDMNT" |
| ts_check_test_command "$TS_CMD_MOUNTPOINT" |
| |
| ts_skip_nonroot |
| |
| function mount_and_check { |
| # last arg must be an existing or to-be-mounted mountpoint |
| local mountpoint="${@: -1}" |
| |
| $TS_CMD_MOUNT "$@" \ |
| || ts_die "error: mount $*" |
| |
| $TS_CMD_MOUNTPOINT -q "$mountpoint" \ |
| || ts_die "error: mountpoint $mountpoint" |
| } |
| |
| DIR_PRIVATE="$TS_OUTDIR/mnt-move-private" |
| |
| DIR_SRC="$DIR_PRIVATE/mnt-move-src" |
| DIR_A="$DIR_PRIVATE/mnt-move-A" |
| DIR_B="$DIR_PRIVATE/mnt-move-B" |
| |
| # this may fail if there are mounted dirs left |
| rm -rf "$DIR_PRIVATE" || ts_die "cleanup failed, check manually!" |
| mkdir "$DIR_PRIVATE" || ts_die "error: mkdir DIR_PRIVATE" |
| |
| # create bind mount and make it private to be sure |
| # (kernel cannot move mount with shared parent) |
| mount_and_check --bind $DIR_PRIVATE $DIR_PRIVATE |
| mount_and_check --make-rprivate $DIR_PRIVATE |
| |
| # Is the bind mount still rw? |
| mkdir $DIR_SRC $DIR_A $DIR_B \ |
| || ts_die "error: mkdir on private bind mount" |
| |
| # bind |
| mount_and_check --bind $DIR_SRC $DIR_A |
| |
| # move |
| mount_and_check --move $DIR_A $DIR_B |
| |
| # BTW a basic test for findmnt(8) and mountpoint(1) |
| for f in `find $DIR_PRIVATE2 $DIR_PRIVATE`; do |
| xo="$($TS_CMD_MOUNTPOINT -q "$f" 2>&1)" |
| x=$? |
| yo="$($TS_CMD_FINDMNT --kernel --mountpoint "$f" 2>&1)" |
| y=$? |
| |
| [ "$x" = "$y" ] || ts_log "error: findmount vs. mountpoint: $x, $y, $f" |
| [ -z "$xo" ] || ts_log "error: mountpoint is not quiet: $x, $y, $f" |
| if [ "$y" = "0" -a "$yo" = "" ] || [ "$y" = "1" -a "$yo" != "" ]; then |
| ts_log "error, findmount return value vs. output: $x, $y, $f" |
| fi |
| done |
| |
| # clean up |
| $TS_CMD_UMOUNT $DIR_B || ts_log "error: umount DIR_B" |
| rmdir $DIR_SRC $DIR_A $DIR_B || ts_log "error: rmdir DIR_B" |
| $TS_CMD_UMOUNT $DIR_PRIVATE || ts_log "error: umount DIR_PRIVATE" |
| rmdir $DIR_PRIVATE || ts_log "error: rmdir DIR_PRIVATE" |
| |
| ts_log "Success" |
| ts_finalize |
| |