Added in6140be90ec
However, when O_PATH fds are encountered we'd have to go by /proc/self/fd/ still, since the kernel people are reluctant to make the new syscalls work with them (https://lore.kernel.org/linux-fsdevel/20250206-steril-raumplanung-733224062432@brauner/) Hence getxattrat() and listxattrat() are not employed. While at it, remove the discrepancy between path being NULL and empty - I don't grok the "security issue" claimed earlier, but nowadays even the kernel treats the two as identical:e896474fe4
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