tests/btrfs/214

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test 214
   6 #
   7 # Test if the file capabilities aren't lost after full and incremental send
   8 #
   9 . ./common/preamble
  10 _begin_fstest auto quick send snapshot
  11
  12 _register_cleanup "cleanup"
  13
  14 # Import common functions.
  15 . ./common/filter
  16
  17 _supported_fs btrfs
  18 _require_scratch
  19 _require_command "$SETCAP_PROG" setcap
  20 _require_command "$GETCAP_PROG" getcap
  21
  22 FS1="$SCRATCH_MNT/fs1"
  23 FS2="$SCRATCH_MNT/fs2"
  24
  25 cleanup()
  26 {
  27         cd /
  28         rm -f $tmp.*
  29 }
  30
  31 check_capabilities()
  32 {
  33         local file
  34         local cap
  35         local ret
  36         file="$1"
  37         cap="$2"
  38         ret=$(_getcap "$file")
  39         if [ -z "$ret" ]; then
  40                 echo "$ret"
  41                 echo "missing capability in file $file"
  42         fi
  43         if [[ "$ret" != *$cap* ]]; then
  44                 echo "$cap"
  45                 echo "Capabilities do not match. Output: $ret"
  46         fi
  47 }
  48
  49 setup()
  50 {
  51         _scratch_mkfs >/dev/null
  52         _scratch_mount
  53
  54         $BTRFS_UTIL_PROG subvolume create "$FS1" > /dev/null
  55         $BTRFS_UTIL_PROG subvolume create "$FS2" > /dev/null
  56 }
  57
  58 full_nocap_inc_withcap_send()
  59 {
  60         local ret
  61
  62         setup
  63
  64         # Test full send containing a file without capabilities
  65         touch "$FS1/foo.bar"
  66         $BTRFS_UTIL_PROG subvolume snapshot -r "$FS1" "$FS1/snap_init" >/dev/null
  67         $BTRFS_UTIL_PROG send "$FS1/snap_init" -q | $BTRFS_UTIL_PROG receive "$FS2" -q
  68         # ensure that we don't have capabilities set
  69         ret=$(_getcap "$FS2/snap_init/foo.bar")
  70         if [ -n "$ret" ]; then
  71                 echo "File contains capabilities when it shouldn't"
  72         fi
  73
  74         # Test if incremental send brings the newly added capability
  75         $SETCAP_PROG "cap_sys_ptrace+ep cap_sys_nice+ep" "$FS1/foo.bar"
  76         $BTRFS_UTIL_PROG subvolume snapshot -r "$FS1" "$FS1/snap_inc" >/dev/null
  77         $BTRFS_UTIL_PROG send -p "$FS1/snap_init" "$FS1/snap_inc" -q | \
  78                                         $BTRFS_UTIL_PROG receive "$FS2" -q
  79         check_capabilities "$FS2/snap_inc/foo.bar" "cap_sys_ptrace,cap_sys_nice=ep"
  80
  81         _scratch_unmount
  82 }
  83
  84 roundtrip_send()
  85 {
  86         local files
  87
  88         # files should include foo.bar
  89         files="$1"
  90
  91         setup
  92
  93         # create files on fs1, must contain foo.bar
  94         for f in $files; do
  95                 touch "$FS1/$f"
  96         done
  97
  98         # Test full send, checking if the receiving side keeps the capabilities
  99         $SETCAP_PROG "cap_sys_ptrace+ep cap_sys_nice+ep" "$FS1/foo.bar"
 100         $BTRFS_UTIL_PROG subvolume snapshot -r "$FS1" "$FS1/snap_init" >/dev/null
 101         $BTRFS_UTIL_PROG send "$FS1/snap_init" -q | $BTRFS_UTIL_PROG receive "$FS2" -q
 102         check_capabilities "$FS2/snap_init/foo.bar" "cap_sys_ptrace,cap_sys_nice=ep"
 103
 104         # Test incremental send with different owner/group but same capabilities
 105         chgrp 100 "$FS1/foo.bar"
 106         $SETCAP_PROG "cap_sys_ptrace+ep cap_sys_nice+ep" "$FS1/foo.bar"
 107         $BTRFS_UTIL_PROG subvolume snapshot -r "$FS1" "$FS1/snap_inc" >/dev/null
 108         check_capabilities "$FS1/snap_inc/foo.bar" "cap_sys_ptrace,cap_sys_nice=ep"
 109         $BTRFS_UTIL_PROG send -p "$FS1/snap_init" "$FS1/snap_inc" -q | \
 110                                 $BTRFS_UTIL_PROG receive "$FS2" -q
 111         check_capabilities "$FS2/snap_inc/foo.bar" "cap_sys_ptrace,cap_sys_nice=ep"
 112
 113         # Test capabilities after incremental send with different group and capabilities
 114         chgrp 0 "$FS1/foo.bar"
 115         $SETCAP_PROG "cap_sys_time+ep cap_syslog+ep" "$FS1/foo.bar"
 116         $BTRFS_UTIL_PROG subvolume snapshot -r "$FS1" "$FS1/snap_inc2" >/dev/null
 117         check_capabilities "$FS1/snap_inc2/foo.bar" "cap_sys_time,cap_syslog=ep"
 118         $BTRFS_UTIL_PROG send -p "$FS1/snap_inc" "$FS1/snap_inc2" -q | \
 119                                 $BTRFS_UTIL_PROG receive "$FS2"  -q
 120         check_capabilities "$FS2/snap_inc2/foo.bar" "cap_sys_time,cap_syslog=ep"
 121
 122         _scratch_unmount
 123 }
 124
 125 # real QA test starts here
 126
 127 echo "Test full send + file without capabilities, then incremental send bringing a new capability"
 128 full_nocap_inc_withcap_send
 129
 130 echo "Testing if foo.bar alone can keep its capabilities"
 131 roundtrip_send "foo.bar"
 132
 133 echo "Test foo.bar being the first item among other files"
 134 roundtrip_send "foo.bar foo.bax foo.baz"
 135
 136 echo "Test foo.bar with objectid between two other files"
 137 roundtrip_send "foo1 foo.bar foo3"
 138
 139 echo "Test foo.bar being the last item among other files"
 140 roundtrip_send "foo1 foo2 foo.bar"
 141
 142 status=0
 143 exit