c65f78671f
This test reproduces an issue of the VFS block file system when the underlying block device has a coarser granularity than the block requests issued by the VFS client. I.e., if the underlying block device has a block size of 4K, writing a sequence of (non-4K-aligned) 512 blocks that crosss a 4K boundary corrupts the data on the block device. Issue #2262
88 lines
1.9 KiB
Plaintext
88 lines
1.9 KiB
Plaintext
#
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# \brief Test for using the block-session support of the libc_vfs plugin
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# \author Norman Feske
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# \date 2016-01-28
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#
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#
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# Build
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#
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build { core init server/ram_blk test/libc_vfs_block }
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create_boot_directory
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#
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# Generate config
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#
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set config {
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<config>
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<parent-provides>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="CPU"/>
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<service name="LOG"/>
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</parent-provides>
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<default-route>
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<any-service> <parent/> <any-child/> </any-service>
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</default-route>
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<start name="ram_blk">
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<resource name="RAM" quantum="2M"/>
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<provides> <service name="Block"/> </provides>
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<config size="16K" block_size="4096"/>
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</start>
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<start name="test-libc_vfs_block">
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<resource name="RAM" quantum="2M"/>
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<config>
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<vfs> <dir name="dev"> <block/> </dir> </vfs>
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<libc/>
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<!-- Populate the block device with a pattern and validate the
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write operation by reading back the content. -->
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<sequence>
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<write content="abcdefghIJKLMNOPqrstuvwxYZABCDEF"/>
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<expect content="abcdefghIJKLMNOPqrstuvwxYZABCDEF"/>
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</sequence>
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<!-- Write single 512 block. This requires the successive reading,
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modification, and writing of the compound 4096 block. -->
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<sequence>
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<write at="9" content="%"/>
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<expect content="abcdefghI%KLMNOPqrstuvwxYZABCDEF"/>
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</sequence>
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<!-- Reset the pattern and write multiple 512 blocks that cross
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a 4096 boundary. -->
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<sequence>
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<write content="abcdefghIJKLMNOPqrstuvwxYZABCDEF"/>
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<write at="15" content="123"/>
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<expect content="abcdefghIJKLMNO123stuvwxYZABCDEF"/>
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</sequence>
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</config>
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</start>
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</config>
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}
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install_config $config
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#
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# Boot modules
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#
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build_boot_image {
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core init
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ld.lib.so libc.lib.so libm.lib.so
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ram_blk test-libc_vfs_block
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}
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#
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# Execute test case
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#
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append qemu_args " -m 128 -nographic "
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run_genode_until {.*child "test-libc_vfs_block" exited with exit value 0.*} 60
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