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Diffstat (limited to 'tests/sparse-file')
| -rw-r--r-- | tests/sparse-file | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/sparse-file b/tests/sparse-file new file mode 100644 index 000000000..4d8c7a6bd --- /dev/null +++ b/tests/sparse-file @@ -0,0 +1,33 @@ +# -*- sh -*- +# Does the current (working-dir.) file system support sparse files? + +# Copyright (C) 2006 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301, USA. + +# Test whether we can create a sparse file. +# For example, on Darwin6.5 with a file system of type hfs, it's not possible. +# NTFS requires 128K before a hole appears in a sparse file. +t=sparse.$$ +dd bs=1 seek=128K of=$t < /dev/null 2> /dev/null +set x `du -sk $t` +kb_size=$2 +rm -f $t +if test $kb_size -ge 128; then + echo "$0: skipping this test, since this file system doesn't support" \ + sparse files 1>&2 + (exit 77); exit 77 +fi |