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Date: Sat, 15 Nov 2025 15:43:11 +0100
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Subject: Re: Cygwin API to atomically create a new file with an ACL?
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From: Thomas Wolff via Cygwin <cygwin AT cygwin DOT com>
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Am 15.11.2025 um 13:58 schrieb Aurélien Couderc via Cygwin:
> Does Cygwin have an API to atomically create a new file with an ACL?
>
> Aurélien
I don't think there's such an API in POSIX. Instead it's the purpose of 
the directory default ACL entries to support this.
While the manual pages of setfacl/getfacl are lousy, a fairly lucid 
description is in 7.6. POSIX Access Control Lists | Administration Guide 
| Red Hat Gluster Storage | 3 | Red Hat Documentation 
<https://docs.redhat.com/en/documentation/red_hat_gluster_storage/3/html/administration_guide/sect-posix_access_control_lists>.
Thomas

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