TZUTC: -0800
MSGID: 53769.syncprog@1:103/705 2da99b1b
PID: Synchronet 3.21a-Linux master/c05a1c33b Dec 17 2025 GCC 12.2.0
TID: SBBSecho 3.33-Linux master/c05a1c33b Dec 17 2025 GCC 12.2.0
BBSID: VERT
CHRS: ASCII 1
FORMAT: flowed
https://gitlab.synchro.net/main/sbbs/-/commit/48922a15c6cb43b450835340
Modified Files:
	src/sbbs3/userdat.c userdat.h
Log Message:
logoutuserdat() uses new function fputuserdat() to reduce open/lock/r/w ops

Reduces from 4 to 1 the open/lock/read/write/close operatons of the userbase
(user.tab) file upon user log-off.

There's more places in sbbs where we do a lot of putuser* calls that could be
(now) optimized in a similar fashion, but logoutuserdat() is called often
(especially by the web, ftp, mail and services servers), so this one was
obvious place to reduce contention on the userbase file.
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