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# Exercise a few more corners of the fiemap-copying code.
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# Copyright (C) 2011-2012 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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# Require a fiemap-enabled FS.
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touch fiemap_chk # check a file rather than current dir for best coverage
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fiemap_capable_ fiemap_chk \
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|| skip_ "this file system lacks FIEMAP support"
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# Exercise the code that handles a file ending in a hole.
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printf x > k || framework_failure_
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dd bs=1k seek=128 of=k < /dev/null || framework_failure_
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# The first time through the outer loop, the input file, K, ends with a hole.
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# The second time through, we append a byte so that it does not.
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for append in no yes; do
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test $append = yes && printf y >> k
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for i in always never; do
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cp --sparse=$i k k2 || fail=1
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# Ensure that --sparse=always can restore holes.
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# Create a file starting with an "x", followed by 256K-1 0 bytes.
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printf x > k || framework_failure_
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dd bs=1k seek=1 of=k count=255 < /dev/zero || framework_failure_
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# cp should detect the all-zero blocks and convert some of them to holes.
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# How many it detects/converts currently depends on io_blksize.
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# Currently, on my F14/ext4 desktop, this K starts off with size 256KiB,
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# (note that the K in the preceding test starts off with size 4KiB).
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# cp from coreutils-8.9 with --sparse=always reduces the size to 32KiB.
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cp --sparse=always k k2 || fail=1
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test $(stat -c %b k2) -lt $(stat -c %b k) || fail=1
added
removed
tests/cp/fiemap-2.sh
