tools/regression/fstest/tests/truncate/00.t

   1 #!/bin/sh
   2 # $FreeBSD$
   3
   4 desc="truncate descrease/increase file size"
   5
   6 dir=`dirname $0`
   7 . ${dir}/../misc.sh
   8
   9 echo "1..21"
  10
  11 n0=`namegen`
  12 n1=`namegen`
  13
  14 expect 0 mkdir ${n1} 0755
  15 cdir=`pwd`
  16 cd ${n1}
  17
  18 expect 0 create ${n0} 0644
  19 expect 0 truncate ${n0} 1234567
  20 expect 1234567 lstat ${n0} size
  21 expect 0 truncate ${n0} 567
  22 expect 567 lstat ${n0} size
  23 expect 0 unlink ${n0}
  24
  25 dd if=/dev/random of=${n0} bs=12345 count=1 >/dev/null 2>&1
  26 expect 0 truncate ${n0} 23456
  27 expect 23456 lstat ${n0} size
  28 expect 0 truncate ${n0} 1
  29 expect 1 lstat ${n0} size
  30 expect 0 unlink ${n0}
  31
  32 # successful truncate(2) updates ctime.
  33 expect 0 create ${n0} 0644
  34 ctime1=`${fstest} stat ${n0} ctime`
  35 sleep 1
  36 expect 0 truncate ${n0} 123
  37 ctime2=`${fstest} stat ${n0} ctime`
  38 test_check $ctime1 -lt $ctime2
  39 expect 0 unlink ${n0}
  40
  41 # unsuccessful truncate(2) does not update ctime.
  42 expect 0 create ${n0} 0644
  43 ctime1=`${fstest} stat ${n0} ctime`
  44 sleep 1
  45 expect EACCES -u 65534 truncate ${n0} 123
  46 ctime2=`${fstest} stat ${n0} ctime`
  47 test_check $ctime1 -eq $ctime2
  48 expect 0 unlink ${n0}
  49
  50 cd ${cdir}
  51 expect 0 rmdir ${n1}