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79 lines
2.5 KiB
79 lines
2.5 KiB
#!/usr/bin/env python3
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import os
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import sys
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import tempfile
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from posix_parity import cleanup_paths
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from posix_parity import compare_calls
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from posix_parity import fail
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from posix_parity import join
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from posix_parity import touch
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def main():
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if len(sys.argv) != 2:
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print("usage: TEST_posix_open_read_write <mountpoint>", file=sys.stderr)
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return 1
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mount = sys.argv[1]
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with tempfile.TemporaryDirectory() as native:
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merge_file = join(mount, "posix-rw/file")
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native_file = join(native, "posix-rw/file")
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merge_missing = join(mount, "posix-rw/missing")
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native_missing = join(native, "posix-rw/missing")
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merge_dir = join(mount, "posix-rw/dir")
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native_dir = join(native, "posix-rw/dir")
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merge_notdir = join(mount, "posix-rw/notdir")
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native_notdir = join(native, "posix-rw/notdir")
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cleanup_paths([merge_file, merge_notdir])
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touch(merge_file, b"123456", 0o644)
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touch(native_file, b"123456", 0o644)
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os.makedirs(merge_dir, exist_ok=True)
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os.makedirs(native_dir, exist_ok=True)
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touch(merge_notdir, b"x", 0o644)
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touch(native_notdir, b"x", 0o644)
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err = compare_calls("open ENOENT", lambda: os.open(merge_missing, os.O_RDONLY), lambda: os.open(native_missing, os.O_RDONLY))
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if err:
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return fail(err)
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err = compare_calls("open EISDIR", lambda: os.open(merge_dir, os.O_WRONLY), lambda: os.open(native_dir, os.O_WRONLY))
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if err:
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return fail(err)
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err = compare_calls(
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"open ENOTDIR",
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lambda: os.open(join(merge_notdir, "child"), os.O_RDONLY),
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lambda: os.open(join(native_notdir, "child"), os.O_RDONLY),
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)
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if err:
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return fail(err)
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mfd = os.open(merge_file, os.O_RDWR)
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nfd = os.open(native_file, os.O_RDWR)
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try:
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os.lseek(mfd, 0, os.SEEK_SET)
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os.lseek(nfd, 0, os.SEEK_SET)
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m_data = os.read(mfd, 6)
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n_data = os.read(nfd, 6)
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if m_data != n_data:
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return fail(f"read parity mismatch mergerfs={m_data!r} native={n_data!r}")
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os.lseek(mfd, 0, os.SEEK_SET)
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os.lseek(nfd, 0, os.SEEK_SET)
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mw = os.write(mfd, b"abc")
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nw = os.write(nfd, b"abc")
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if mw != nw:
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return fail(f"write count mismatch mergerfs={mw} native={nw}")
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finally:
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os.close(mfd)
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os.close(nfd)
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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