[$] Fending off unwanted file descriptors

Date:
Thu, 05 Jun 2025 13:52:14 +0000

Description:
One of the more obscure features provided by Unix-domain sockets is the
ability to pass a file descriptor from one process to another. This
feature is often used to provide access to a specific file or network connection to a process running in a relatively unprivileged context. But
what if the recipient doesn't want a new file descriptor? A feature
added for the 6.16 release makes it possible to refuse that offer.

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Link to news story:
https://lwn.net/Articles/1023085/


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