STRLCPY/criu

criu: Don't fail if ghost file has no parent dirs.

Due to way CRIU handles paths (as relative to workdir), there's a case,
where migration would fail. Simple example is a ghost file in filesystem
root (with root being cwd). For example, "/unlinked" becomes "unlinked".
And original code piece scans path for other slashes, which would be
missing in this case. But it's still a perfectly valid case, and there's
no need to fail. So if there's no parent dir - we just don't need to
create one and we can just return 0 here instead of failing.

Signed-off-by: Vitaly Ostrosablin <[email protected]>
Signed-off-by: Andrei Vagin <[email protected]>

Vitaly Ostrosablin committed with Andrei Vagin 6 years ago

88fbd37f

1 parent 8720f1da

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criu/files-reg.c

		skipped 1473 lines
1474	1474		struct stat st;
1475	1475
1476	1476		p = last_delim = strrchr(path, '/');
1477		-	if (!p) {
1478		-	pr_err("Path %s has no parent dir\n", path);
1479		-	return -1;
1480		-	}
	1477	+	if (!p)
	1478	+	return 0;
1481	1479		*p = '\0';
1482	1480
1483	1481		if (fstatat(mntns_root, path, &st, AT_EMPTY_PATH) == 0)
		skipped 478 lines