kernel/tools/testing/selftests/efivarfs/efivarfs.sh

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