tools/testing/selftests/efivarfs/efivarfs.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 efivarfs_mount=/sys/firmware/efi/efivars
   5 test_guid=210be57c-9849-4fc7-a635-e6382d1aec27
   6
   7 # Kselftest framework requirement - SKIP code is 4.
   8 ksft_skip=4
   9
  10 file_cleanup()
  11 {
  12         chattr -i $1
  13         rm -f $1
  14 }
  15
  16 check_prereqs()
  17 {
  18         local msg="skip all tests:"
  19
  20         if [ $UID != 0 ]; then
  21                 echo $msg must be run as root >&2
  22                 exit $ksft_skip
  23         fi
  24
  25         if ! grep -q "^\S\+ $efivarfs_mount efivarfs" /proc/mounts; then
  26                 echo $msg efivarfs is not mounted on $efivarfs_mount >&2
  27                 exit $ksft_skip
  28         fi
  29 }
  30
  31 run_test()
  32 {
  33         local test="$1"
  34
  35         echo "--------------------"
  36         echo "running $test"
  37         echo "--------------------"
  38
  39         if [ "$(type -t $test)" = 'function' ]; then
  40                 ( $test )
  41         else
  42                 ( ./$test )
  43         fi
  44
  45         if [ $? -ne 0 ]; then
  46                 echo "  [FAIL]"
  47                 rc=1
  48         else
  49                 echo "  [PASS]"
  50         fi
  51 }
  52
  53 test_create()
  54 {
  55         local attrs='\x07\x00\x00\x00'
  56         local file=$efivarfs_mount/$FUNCNAME-$test_guid
  57
  58         printf "$attrs\x00" > $file
  59
  60         if [ ! -e $file ]; then
  61                 echo "$file couldn't be created" >&2
  62                 exit 1
  63         fi
  64
  65         if [ $(stat -c %s $file) -ne 5 ]; then
  66                 echo "$file has invalid size" >&2
  67                 file_cleanup $file
  68                 exit 1
  69         fi
  70         file_cleanup $file
  71 }
  72
  73 test_create_empty()
  74 {
  75         local file=$efivarfs_mount/$FUNCNAME-$test_guid
  76
  77         : > $file
  78
  79         if [ ! -e $file ]; then
  80                 echo "$file can not be created without writing" >&2
  81                 exit 1
  82         fi
  83         file_cleanup $file
  84 }
  85
  86 test_create_read()
  87 {
  88         local file=$efivarfs_mount/$FUNCNAME-$test_guid
  89         ./create-read $file
  90         file_cleanup $file
  91 }
  92
  93 test_delete()
  94 {
  95         local attrs='\x07\x00\x00\x00'
  96         local file=$efivarfs_mount/$FUNCNAME-$test_guid
  97
  98         printf "$attrs\x00" > $file
  99
 100         if [ ! -e $file ]; then
 101                 echo "$file couldn't be created" >&2
 102                 exit 1
 103         fi
 104
 105         file_cleanup $file
 106
 107         if [ -e $file ]; then
 108                 echo "$file couldn't be deleted" >&2
 109                 exit 1
 110         fi
 111
 112 }
 113
 114 # test that we can remove a variable by issuing a write with only
 115 # attributes specified
 116 test_zero_size_delete()
 117 {
 118         local attrs='\x07\x00\x00\x00'
 119         local file=$efivarfs_mount/$FUNCNAME-$test_guid
 120
 121         printf "$attrs\x00" > $file
 122
 123         if [ ! -e $file ]; then
 124                 echo "$file does not exist" >&2
 125                 exit 1
 126         fi
 127
 128         chattr -i $file
 129         printf "$attrs" > $file
 130
 131         if [ -e $file ]; then
 132                 echo "$file should have been deleted" >&2
 133                 exit 1
 134         fi
 135 }
 136
 137 test_open_unlink()
 138 {
 139         local file=$efivarfs_mount/$FUNCNAME-$test_guid
 140         ./open-unlink $file
 141 }
 142
 143 # test that we can create a range of filenames
 144 test_valid_filenames()
 145 {
 146         local attrs='\x07\x00\x00\x00'
 147         local ret=0
 148
 149         local file_list="abc dump-type0-11-1-1362436005 1234 -"
 150         for f in $file_list; do
 151                 local file=$efivarfs_mount/$f-$test_guid
 152
 153                 printf "$attrs\x00" > $file
 154
 155                 if [ ! -e $file ]; then
 156                         echo "$file could not be created" >&2
 157                         ret=1
 158                 else
 159                         file_cleanup $file
 160                 fi
 161         done
 162
 163         exit $ret
 164 }
 165
 166 test_invalid_filenames()
 167 {
 168         local attrs='\x07\x00\x00\x00'
 169         local ret=0
 170
 171         local file_list="
 172                 -1234-1234-1234-123456789abc
 173                 foo
 174                 foo-bar
 175                 -foo-
 176                 foo-barbazba-foob-foob-foob-foobarbazfoo
 177                 foo-------------------------------------
 178                 -12345678-1234-1234-1234-123456789abc
 179                 a-12345678=1234-1234-1234-123456789abc
 180                 a-12345678-1234=1234-1234-123456789abc
 181                 a-12345678-1234-1234=1234-123456789abc
 182                 a-12345678-1234-1234-1234=123456789abc
 183                 1112345678-1234-1234-1234-123456789abc"
 184
 185         for f in $file_list; do
 186                 local file=$efivarfs_mount/$f
 187
 188                 printf "$attrs\x00" 2>/dev/null > $file
 189
 190                 if [ -e $file ]; then
 191                         echo "Creating $file should have failed" >&2
 192                         file_cleanup $file
 193                         ret=1
 194                 fi
 195         done
 196
 197         exit $ret
 198 }
 199
 200 check_prereqs
 201
 202 rc=0
 203
 204 run_test test_create
 205 run_test test_create_empty
 206 run_test test_create_read
 207 run_test test_delete
 208 run_test test_zero_size_delete
 209 run_test test_open_unlink
 210 run_test test_valid_filenames
 211 run_test test_invalid_filenames
 212
 213 exit $rc