Date: Fri, 28 Nov 2025 21:29:17 +0000 From: Olivier Certner <olce@FreeBSD.org> To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Subject: git: 7007c34bf1 - main - releases/15.0R/relnotes: 'cr_gid' split out of cr_groups[0] Message-ID: <692a142d.33160.536a6735@gitrepo.freebsd.org>
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The branch main has been updated by olce: URL: https://cgit.FreeBSD.org/doc/commit/?id=7007c34bf120feb80e460ce928bb697da98b0505 commit 7007c34bf120feb80e460ce928bb697da98b0505 Author: Olivier Certner <olce@FreeBSD.org> AuthorDate: 2025-11-28 21:27:39 +0000 Commit: Olivier Certner <olce@FreeBSD.org> CommitDate: 2025-11-28 21:28:41 +0000 releases/15.0R/relnotes: 'cr_gid' split out of cr_groups[0] In particular, mention what has to be checked. Sponsored by: The FreeBSD Foundation --- website/content/en/releases/15.0R/relnotes.adoc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/website/content/en/releases/15.0R/relnotes.adoc b/website/content/en/releases/15.0R/relnotes.adoc index 01370dc18a..ef8e511f35 100644 --- a/website/content/en/releases/15.0R/relnotes.adoc +++ b/website/content/en/releases/15.0R/relnotes.adoc @@ -770,6 +770,12 @@ The SOCK_SEQPACKET socket has been brought to the specification and now behaves a datagram socket. Applications that were using SOCK_SEQPACKET incorrectly and relied on old implementation bugs may need to be adjusted. gitref:d15792780760[repository=src] +The effective group ID is now stored in the new `cr_gid` field of `struct cred` and has been removed as the first element of `cr_groups[]`, which now only contains the supplementary groups. +All downstream and out-of-tree modules using `cr_groups[0]` must be fixed to use `cr_gid` instead, and surrounding code that loops on `cr_groups[]` elements excluding `cr_groups[0]`, i.e., that intends to act on supplementary groups only, also needs to be adjusted as now supplementary groups start at `&cr_groups[0]` instead of `&cr_groups[1]`. +Code that needs to be portable to both 15.0 and earlier versions can use `cr_gid`, which existed also previously as a macro, and can test the truth value of `&cr_groups[0] != &cr_gid` to know how to browse the supplementary groups adequately. +gitref:be1f7435ef218b1df35[repository=src] +(Sponsored by the FreeBSD Foundation.) + [[drivers]] == Devices and Drivershelp
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