d20418ee51
The block layer read and write functions do not like requests which are bigger than INT_MAX bytes. Since the VDI bmap is read and written in a single operation, its size is therefore limited accordingly. This reduces the maximum VDI image size supported by QEMU to half of what it currently is (down to approximately 512 TB). The VDI test 084 has to be adapted accordingly. Actually, one could clearly see that it was broken from the "Could not open 'TEST_DIR/t.IMGFMT': Invalid argument" line for an image which was supposed to work just fine. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de>
117 lines
3.5 KiB
Bash
Executable file
117 lines
3.5 KiB
Bash
Executable file
#!/bin/bash
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#
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# Test case for VDI header corruption; image too large, and too many blocks.
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# Also simple test for creating dynamic and static VDI images.
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#
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# Copyright (C) 2013 Red Hat, Inc.
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#
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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 2 of the License, or
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# (at your option) any later version.
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#
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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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#
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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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#
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# creator
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owner=jcody@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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# This tests vdi-specific header fields
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_supported_fmt vdi
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_supported_proto file
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_supported_os Linux
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size=64M
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ds_offset=368 # disk image size field offset
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bs_offset=376 # block size field offset
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bii_offset=384 # block in image field offset
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echo
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echo "=== Statically allocated image creation ==="
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echo
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_make_test_img $size -o static
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_img_info
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stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
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_cleanup_test_img
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echo
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echo "=== Testing image size bounds ==="
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echo
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_make_test_img $size
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_img_info
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stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
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# check for image size too large
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# poke max image size, and appropriate blocks_in_image value
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echo "Test 1: Maximum size (512 TB - 128 MB):"
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poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\xf8\xff\xff\x01\x00"
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poke_file "$TEST_IMG" "$bii_offset" "\x80\xff\xff\x1f"
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_img_info
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echo
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echo "Test 2: Size too large (512 TB - 128 MB + 64 kB)"
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# This should be too large (-EINVAL):
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poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x01\xf8\xff\xff\x01\x00"
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_img_info
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echo
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echo "Test 3: Size valid (64M), but Blocks In Image too small (63)"
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# This sets the size to 64M, but with a blocks_in_image size that is
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# too small
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poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\x04\x00\x00\x00\x00"
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# For a 64M image, we would need a blocks_in_image value of at least 64,
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# so 63 should be too small and give us -ENOTSUP
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poke_file "$TEST_IMG" "$bii_offset" "\x3f\x00\x00\x00"
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_img_info
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echo
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echo "Test 4: Size valid (64M), but Blocks In Image exceeds max allowed"
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# Now check the bounds of blocks_in_image - 0x1fffff80 should be the max
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# value here, and we should get -ENOTSUP
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poke_file "$TEST_IMG" "$bii_offset" "\x81\xff\xff\x1f"
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_img_info
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# Finally, 1MB is the only block size supported. Verify that
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# a value != 1MB results in error, both smaller and larger
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echo
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echo "Test 5: Valid Image: 64MB, Blocks In Image 64, Block Size 1MB"
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poke_file "$TEST_IMG" "$bii_offset" "\x40\x00\x00\x00" # reset bii to valid
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poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x10\x00" # valid
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_img_info
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echo
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echo "Test 6: Block Size != 1MB; too small test (1MB - 1)"
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poke_file "$TEST_IMG" "$bs_offset" "\xff\xff\x0f\x00" # invalid (too small)
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_img_info
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echo
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echo "Test 7: Block Size != 1MB; too large test (1MB + 64KB)"
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poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x11\x00" # invalid (too large)
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_img_info
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# success, all done
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echo
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echo "*** done"
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rm -f $seq.full
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status=0
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