60473f0c23674bbde9f1b3cf1a2222a89c254886
PATH_MAX is supposed to include the terminating NUL byte. But we already check that there is no NUL byte in the specified path. Hence the maximum length we can expect is PATH_MAX - 1. This doesn't change much, but makes this use of PATH_MAX consistent with the rest of the codebase.
systemd - System and Service Manager
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