mirror of
https://github.com/trapexit/mergerfs.git
synced 2026-10-19 16:16:48 +00:00
Antonio SJ Musumeci
ef1e01b5a5
Unit tests (29 new in tests/tests.cpp): - str::eq() and str::startswith() char* nullptr safety - str::from() u64/s64/int suffix parsing (K/M/G/T, overflow, invalid) - num::humanize() byte formatting (0, 512, 1K, 1M, 1G, 1T, non-exact) - RmdirErr priority error accumulation (ENOTEMPTY/EEXIST override rules) - HashSet inline-to-heap growth, empty string, and large insertion - fs::inode algorithm switching (valid/invalid names, passthrough raw ino, distinct inodes across algorithms) - RND::rand64() bounds (range, max, shrink_to_rand_elem) - Branches::Impl copy and move assignment re-links default_minfreespace Integration tests (5 new in tests/): - TEST_policy_lup: LUP policy create and search - TEST_rmdir_enotempty_priority: rmdir returns ENOTEMPTY for non-empty dirs - TEST_open_after_unlink: read/write via fd after unlink - TEST_api_xattr: mergerfs xattr API (fullpath, relpath, basepath, allpaths) - TEST_movefile_enospc: moveonenospc configuration round-trip Also: remove xattr nosys checks from TEST_cfg_xattr_modes, reformat integration test scripts to use temp_dir/cleanup_dir helpers, and minor parameter alignment changes in fuse_getxattr, fuse_init, fuse_rename.
229 lines
7.8 KiB
Python
Executable File
229 lines
7.8 KiB
Python
Executable File
#!/usr/bin/env python3
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import ctypes
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import errno
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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_dir
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from posix_parity import join
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from posix_parity import temp_dir
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libc = ctypes.CDLL(None, use_errno=True)
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libc.readlink.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_size_t]
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libc.readlink.restype = ctypes.c_ssize_t
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def readlink_raw(path: str, bufsiz: int):
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buf = ctypes.create_string_buffer(bufsiz)
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ctypes.set_errno(0)
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rv = libc.readlink(path.encode(), buf, bufsiz)
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err = ctypes.get_errno()
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return rv, err, bytes(buf)
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def compare_case(name: str,
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merge_path: str,
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native_path: str,
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bufsiz: int,
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expect_errno: int = None):
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m_rv, m_errno, m_buf = readlink_raw(merge_path, bufsiz)
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n_rv, n_errno, n_buf = readlink_raw(native_path, bufsiz)
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if m_rv != n_rv:
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return f"{name}: return mismatch mergerfs={m_rv} native={n_rv}"
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if m_errno != n_errno:
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return f"{name}: errno mismatch mergerfs={m_errno} native={n_errno}"
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if m_rv >= 0 and m_buf != n_buf:
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return f"{name}: buffer mismatch mergerfs={m_buf!r} native={n_buf!r}"
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if expect_errno is not None and n_errno != expect_errno:
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return f"{name}: expected errno={expect_errno}, got errno={n_errno}"
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return None
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def main():
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if len(sys.argv) != 2:
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print("usage: TEST_readlink_semantics <mountpoint>", file=sys.stderr)
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return 1
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mount = sys.argv[1]
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target = "target-abcdefghijklmnopqrstuvwxyz"
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with tempfile.TemporaryDirectory() as native_dir:
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merge_base = temp_dir(mount)
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try:
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native_base = join(native_dir, os.path.basename(merge_base))
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os.makedirs(native_base, exist_ok=True)
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paths = {
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"merge_link": join(merge_base, "readlink-semantics-link"),
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"native_link": join(native_base, "readlink-semantics-link"),
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"merge_regular": join(merge_base, "readlink-semantics-regular"),
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"native_regular": join(native_base, "readlink-semantics-regular"),
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"merge_notdir": join(merge_base, "readlink-semantics-notdir"),
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"native_notdir": join(native_base, "readlink-semantics-notdir"),
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"merge_loop": join(merge_base, "readlink-semantics-loop"),
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"native_loop": join(native_base, "readlink-semantics-loop"),
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"merge_private_dir": join(merge_base, "readlink-semantics-private"),
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"native_private_dir": join(native_base, "readlink-semantics-private"),
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}
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paths["merge_private_link"] = os.path.join(paths["merge_private_dir"], "link")
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paths["native_private_link"] = os.path.join(paths["native_private_dir"], "link")
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for p in (
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paths["merge_private_link"],
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paths["merge_link"],
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paths["merge_regular"],
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paths["merge_notdir"],
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paths["merge_loop"],
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):
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try:
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os.unlink(p)
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except FileNotFoundError:
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pass
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try:
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os.rmdir(paths["merge_private_dir"])
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except FileNotFoundError:
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pass
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except OSError:
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pass
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os.symlink(target, paths["merge_link"])
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os.symlink(target, paths["native_link"])
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with open(paths["merge_regular"], "w", encoding="ascii"):
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pass
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with open(paths["native_regular"], "w", encoding="ascii"):
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pass
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with open(paths["merge_notdir"], "w", encoding="ascii"):
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pass
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with open(paths["native_notdir"], "w", encoding="ascii"):
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pass
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os.symlink("readlink-semantics-loop", paths["merge_loop"])
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os.symlink("readlink-semantics-loop", paths["native_loop"])
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os.makedirs(paths["merge_private_dir"], exist_ok=True)
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os.makedirs(paths["native_private_dir"], exist_ok=True)
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os.symlink(target, paths["merge_private_link"])
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os.symlink(target, paths["native_private_link"])
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cases = []
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for bufsiz in (0, 1, 2, 5, 8, len(target), len(target) + 1):
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cases.append((
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f"success/truncation bufsiz={bufsiz}",
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paths["merge_link"],
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paths["native_link"],
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bufsiz,
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errno.EINVAL if bufsiz == 0 else None,
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))
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cases.extend([
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(
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"EINVAL non-symlink",
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paths["merge_regular"],
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paths["native_regular"],
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128,
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errno.EINVAL,
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),
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(
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"ENOENT missing path",
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join(merge_base, "readlink-semantics-missing"),
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join(native_base, "readlink-semantics-missing"),
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128,
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errno.ENOENT,
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),
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(
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"ENOTDIR non-directory prefix",
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os.path.join(paths["merge_notdir"], "child"),
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os.path.join(paths["native_notdir"], "child"),
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128,
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errno.ENOTDIR,
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),
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(
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"ELOOP prefix symlink loop",
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os.path.join(paths["merge_loop"], "child"),
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os.path.join(paths["native_loop"], "child"),
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128,
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errno.ELOOP,
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),
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(
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"ENAMETOOLONG long pathname",
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join(merge_base, "a" * 8192),
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join(native_base, "a" * 8192),
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128,
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errno.ENAMETOOLONG,
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),
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])
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os.chmod(paths["merge_private_dir"], 0o600)
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os.chmod(paths["native_private_dir"], 0o600)
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cases.append((
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"EACCES unreadable path prefix",
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paths["merge_private_link"],
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paths["native_private_link"],
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128,
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errno.EACCES if os.geteuid() != 0 else None,
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))
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for case in cases:
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err = compare_case(*case)
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if err is not None:
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print(err, end="")
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return 1
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# Explicitly guard the prior regression.
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rv, err, _ = readlink_raw(paths["merge_link"], 1)
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if rv != 1 or err != 0:
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print(f"bufsiz=1 expected rv=1 errno=0, got rv={rv} errno={err}", end="")
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return 1
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return 0
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finally:
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cleanup_dir(merge_base)
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try:
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os.chmod(paths["merge_private_dir"], 0o700)
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except (FileNotFoundError, PermissionError):
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pass
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try:
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os.chmod(paths["native_private_dir"], 0o700)
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except (FileNotFoundError, PermissionError):
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pass
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for p in (
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paths["merge_private_link"],
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paths["native_private_link"],
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paths["merge_link"],
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paths["native_link"],
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paths["merge_regular"],
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paths["native_regular"],
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paths["merge_notdir"],
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paths["native_notdir"],
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paths["merge_loop"],
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paths["native_loop"],
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):
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try:
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os.unlink(p)
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except FileNotFoundError:
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pass
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for p in (paths["merge_private_dir"], paths["native_private_dir"]):
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try:
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os.rmdir(p)
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except FileNotFoundError:
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pass
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except OSError:
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pass
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if __name__ == "__main__":
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raise SystemExit(main())
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