/usr/bin/aubusy is in aufs-tools 1:4.9+20170918-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #!/bin/sh
# Copyright (C) 2011-2014 Junjiro R. Okajima
#
# This program, aufs 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 program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
verbose=0
if [ "$1" = -v ]
then
verbose=1
shift
fi
test $# -ne 2 &&
{
echo Invalid argument
echo Usage: $(basename $0) '[-v]' aufs_mntpnt branch_path
printf '\tprint PIDs which make the branch busy and un-removable.\n'
printf '\t-v prints additional information, the inode number in aufs,\n'
printf '\tthe branch index, and the actual inode number on that branch.\n'
} 1>&2 &&
exit 1
set -eu
f=/etc/default/aufs
test ! -e $f &&
echo $f is not installed 1>&2 &&
exit 1
. $f
mntent=$(FindMntEnt "$1")
test ! "$mntent" &&
echo No such aufs mount point "$1" 1>&2 &&
exit 1
mntpnt=$(echo $mntent | cut -f2 -d' ')
SetDir br "$2"
mntopts=$(MntOpts "$1")
si=$(echo $mntopts | sed -e 's/^.*,si=\([^,]*\),*.*$/\1/')
d=/sys/fs/aufs/si_$si
if [ -r $d/br0 ]
then
# it may be very long and shell may not be able to handle as wildcard
bindex=$(find $d -name 'br*' |
xargs -r grep -l "^${br}=" |
xargs -r basename |
cut -c3-)
else
bi=$(echo $mntpopts |
sed -e 's/^.*,br://' |
tr ':' '\n' |
rev |
cut -f2- -d= |
rev |
grep -n "^${br}=" |
cut -f1 -d:)
# the origin in aufs is zero.
bindex=$(($bi - 1))
fi
########################################
# here we go
lsof -FDiR "$mntpnt" |
awk -v g_ppid=$$ \
-v g_dev=$(stat -c %D "$mntpnt") \
-v root=$AUFS_ROOT_INO \
'
function pr()
{
if (inum) {
print pid, inum;
inum = "";
}
}
/^p/ {
pr();
pid = substr($0, 2);
do_print = 1;
next;
}
/^R/ {
ppid = substr($0, 2);
if (ppid == g_ppid)
do_print = 0;
next;
}
/^D/ {
dev = substr($0, 4);
if (dev != g_dev)
do_print = 0;
next;
}
/^i/ && do_print {
n = substr($0, 2);
if (n != root)
inum = inum " " n;
}
END {
pr();
}
' |
#tee /dev/tty |
while read pid ino
do
# it may be very long and shell may not be able to handle as parameters
echo "$ino" |
xargs -r auibusy "$mntpnt" $bindex |
{
if [ $verbose -eq 1 ]
then
sed -e s/^/$pid' /'
else
test $(wc -c) -ne 0 &&
echo $pid
fi
}
done |
uniq
|