Possible incompatible change with initgroups(3)?
Date: Fri, 19 Sep 2025 23:02:48 UTC
Today I updated my 16.0-CURRENT amd64 system from
main-n280279-b0e7b55a0e90 to main-n280498-b3468202994f and noticed
Postfix emits such error messages as below.
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Sep 20 03:00:11 rolling-vm-freebsd1 postfix/qmgr[2634]: fatal: initgroups: Socket operation on non-socket
Sep 20 03:00:11 rolling-vm-freebsd1 postfix/pickup[2635]: fatal: initgroups: Socket operation on non-socket
Sep 20 03:01:00 rolling-vm-freebsd1 postfix/showq[66274]: fatal: initgroups: Socket operation on non-socket
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So I rebuilt, reinstalled and restared Postfix. Then error message
disappeared.
I checked commit log between b0e7b55a0e90 and b3468202994f, and found
following one.
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commit 0b018cfd81d8
Author: Olivier Certner <olce@FreeBSD.org>
AuthorDate: Tue Sep 16 17:52:20 2025 +0200
Commit: Olivier Certner <olce@FreeBSD.org>
CommitDate: Wed Sep 17 14:16:06 2025 +0200
initgroups(3): Fix return value on allocation failure
We must not return ENOMEM, but rather -1 with 'errno' set to ENOMEM, as
described in the manual page and as other implementations are doing.
A malloc() failure actually already sets ENOMEM for us. Add comments
indicating which function set 'errno' each time we return.
While here, improve style and remove useless headers.
Reviewed by: kib, emaste
Fixes: 54404cfb13d4 ("In preparation for raising NGROUPS and NGROUPS_MAX, ...")
MFC after: 5 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D52580
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According to commit message, it is likely that the commit introduces
some incompatibility with initgroups(3) and that it causes error
messages of Postfix. And if it is correct, then __FreeBSD_version
should be bumped to force packages that use initgroups(3) to be
rebuilt.
---
Yasuhiro Kimura