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https://github.com/eledio-devices/thirdparty-littlefs.git
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c25c893219
Removing the dependency to the parent pointer solves many issues with non-atomic updates of children's parent pointers with respect to any move operations. However, this comes with an embarrassingly terrible runtime as the only other option is to exhaustively check every dir entry to find a child's parent. Fortunately, deorphaning should be a relatively rare operation.
42 lines
1.1 KiB
Bash
Executable File
42 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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set -eu
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echo "=== Orphan tests ==="
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rm -rf blocks
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tests/test.py << TEST
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lfs_format(&lfs, &config) => 0;
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TEST
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echo "--- Orphan test ---"
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tests/test.py << TEST
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lfs_mount(&lfs, &config) => 0;
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lfs_mkdir(&lfs, "parent") => 0;
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lfs_mkdir(&lfs, "parent/orphan") => 0;
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lfs_mkdir(&lfs, "parent/child") => 0;
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lfs_remove(&lfs, "parent/orphan") => 0;
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TEST
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# remove most recent file, this should be the update to the previous
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# linked-list entry and should orphan the child
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rm -v "blocks/$(ls -t blocks | sed -n '/^[0-9a-f]*$/p' | sed -n '1p')"
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tests/test.py << TEST
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lfs_mount(&lfs, &config) => 0;
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lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERROR_NO_ENTRY;
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unsigned before = 0;
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lfs_traverse(&lfs, test_count, &before) => 0;
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test_log("before", before);
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lfs_deorphan(&lfs) => 0;
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lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERROR_NO_ENTRY;
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unsigned after = 0;
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lfs_traverse(&lfs, test_count, &after) => 0;
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test_log("after", after);
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int diff = before - after;
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diff => 2;
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lfs_unmount(&lfs) => 0;
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TEST
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echo "--- Results ---"
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tests/stats.py
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