spaceman/xfs_info.sh

   1 #!/bin/sh -f
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
   5 #
   6
   7 OPTS=""
   8 USAGE="Usage: xfs_info [-V] [-t mtab] [mountpoint|device|file]"
   9
  10 # Try to find a loop device associated with a file.  We only want to return
  11 # one loopdev (multiple loop devices can attach to a single file) so we grab
  12 # the last line and return it if it's actually a block device.
  13 try_find_loop_dev_for_file() {
  14         local x="$(losetup -O NAME -j "$1" 2> /dev/null | tail -n 1)"
  15         test -b "$x" && echo "$x"
  16 }
  17
  18 while getopts "t:V" c
  19 do
  20         case $c in
  21         t)      OPTS="-t $OPTARG" ;;
  22         V)      xfs_spaceman -p xfs_info -V
  23                 status=$?
  24                 exit $status
  25                 ;;
  26         *)      echo $USAGE 1>&2
  27                 exit 2
  28                 ;;
  29         esac
  30 done
  31 set -- extra "$@"
  32 shift $OPTIND
  33 case $# in
  34         1)
  35                 arg="$1"
  36
  37                 # See if we can map the arg to a loop device
  38                 loopdev="$(try_find_loop_dev_for_file "${arg}")"
  39                 test -n "${loopdev}" && arg="${loopdev}"
  40
  41                 # If we find a mountpoint for the device, do a live query;
  42                 # otherwise try reading the fs with xfs_db.
  43                 if mountpt="$(findmnt -t xfs -f -n -o TARGET "${arg}" 2> /dev/null)"; then
  44                         xfs_spaceman -p xfs_info -c "info" $OPTS "${mountpt}"
  45                         status=$?
  46                 else
  47                         xfs_db -p xfs_info -c "info" $OPTS "${arg}"
  48                         status=$?
  49                 fi
  50                 ;;
  51         *)      echo $USAGE 1>&2
  52                 exit 2
  53                 ;;
  54 esac
  55 exit $status