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The offsets[] array allows efficient seeking and tells us the maximum compressed data size. If the offsets are bogus the maximum compressed data size will be unrealistic. This could cause g_malloc() to abort and bogus offsets mean the image is broken anyway. Therefore we should refuse such images. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
35 lines
1.4 KiB
Plaintext
35 lines
1.4 KiB
Plaintext
QA output created by 075
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== check that the first sector can be read ==
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read 512/512 bytes at offset 0
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== block_size must be a multiple of 512 ==
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: block_size 513 must be a multiple of 512
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no file open, try 'help open'
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== block_size cannot be zero ==
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: block_size cannot be zero
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no file open, try 'help open'
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== huge block_size ===
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: block_size 4294966784 must be 64 MB or less
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no file open, try 'help open'
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== offsets_size overflow ===
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: n_blocks 4294967295 must be 536870911 or less
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no file open, try 'help open'
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== refuse images that require too many offsets ===
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: image requires too many offsets, try increasing block size
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no file open, try 'help open'
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== refuse images with non-monotonically increasing offsets ==
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: offsets not monotonically increasing at index 1, image file is corrupt
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no file open, try 'help open'
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== refuse images with invalid compressed block size ==
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qemu-io: can't open device TEST_DIR/simple-pattern.cloop: invalid compressed block size at index 1, image file is corrupt
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no file open, try 'help open'
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*** done
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