[$] Reconsidering O_CREAT|O_DIRECTORY

Date:
Thu, 30 Jul 2026 14:00:40 +0000

Description:
Linux provides a system call ( mkdir() )
to create a directory, and a few variants of open() that can open a
directory. There is, however, no
system call in Linux that can create and open a directory in a single, race-free call. Jori Koolstra has been working on remedying that
situation, most recently by repurposing a set of open() flags that currently return an error. There are, however, concerns that show just how hard it
can be to create user-space interfaces that do not present traps for application developers.

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Link to news story:
https://lwn.net/Articles/1085617/


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