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
  92
  93         if [ -e $file ]; then
  94                 echo "$file couldn't be deleted" >&2
  95                 exit 1
  96         fi
  97
  98 }
  99
 100 # test that we can remove a variable by issuing a write with only
 101 # attributes specified
 102 test_zero_size_delete()
 103 {
 104         local attrs='\x07\x00\x00\x00'
 105         local file=$efivarfs_mount/$FUNCNAME-$test_guid
 106
 107         printf "$attrs\x00" > $file
 108
 109         if [ ! -e $file ]; then
 110                 echo "$file does not exist" >&2
 111                 exit 1
 112         fi
 113
 114         printf "$attrs" > $file
 115
 116         if [ -e $file ]; then
 117                 echo "$file should have been deleted" >&2
 118                 exit 1
 119         fi
 120 }
 121
 122 test_open_unlink()
 123 {
 124         local file=$efivarfs_mount/$FUNCNAME-$test_guid
 125         ./open-unlink $file
 126 }
 127
 128 # test that we can create a range of filenames
 129 test_valid_filenames()
 130 {
 131         local attrs='\x07\x00\x00\x00'
 132         local ret=0
 133
 134         local file_list="abc dump-type0-11-1-1362436005 1234 -"
 135         for f in $file_list; do
 136                 local file=$efivarfs_mount/$f-$test_guid
 137
 138                 printf "$attrs\x00" > $file
 139
 140                 if [ ! -e $file ]; then
 141                         echo "$file could not be created" >&2
 142                         ret=1
 143                 else
 144                         rm $file
 145                 fi
 146         done
 147
 148         exit $ret
 149 }
 150
 151 test_invalid_filenames()
 152 {
 153         local attrs='\x07\x00\x00\x00'
 154         local ret=0
 155
 156         local file_list="
 157                 -1234-1234-1234-123456789abc
 158                 foo
 159                 foo-bar
 160                 -foo-
 161                 foo-barbazba-foob-foob-foob-foobarbazfoo
 162                 foo-------------------------------------
 163                 -12345678-1234-1234-1234-123456789abc
 164                 a-12345678=1234-1234-1234-123456789abc
 165                 a-12345678-1234=1234-1234-123456789abc
 166                 a-12345678-1234-1234=1234-123456789abc
 167                 a-12345678-1234-1234-1234=123456789abc
 168                 1112345678-1234-1234-1234-123456789abc"
 169
 170         for f in $file_list; do
 171                 local file=$efivarfs_mount/$f
 172
 173                 printf "$attrs\x00" 2>/dev/null > $file
 174
 175                 if [ -e $file ]; then
 176                         echo "Creating $file should have failed" >&2
 177                         rm $file
 178                         ret=1
 179                 fi
 180         done
 181
 182         exit $ret
 183 }
 184
 185 check_prereqs
 186
 187 rc=0
 188
 189 run_test test_create
 190 run_test test_create_empty
 191 run_test test_create_read
 192 run_test test_delete
 193 run_test test_zero_size_delete
 194 run_test test_open_unlink
 195 run_test test_valid_filenames
 196 run_test test_invalid_filenames
 197
 198 exit $rc