Subj : src/sbbs3/smbutil.c
To   : Git commit to main/sbbs/master
From : Rob Swindell (on Windows 11)
Date : Fri Feb 13 2026 12:34 am

https://gitlab.synchro.net/main/sbbs/-/commit/c322f624d537025462d70da5
Modified Files:
	src/sbbs3/smbutil.c
Log Message:
Rename msgbase files *before* packing to insure exclusive access

Even with the *.lock file created exclusively, there's still a race condition
where other processes could have the msgbase files open in which case the
final rename (e.g. from *.sd$ to *.sdt) would fail with an error and you'd end
up with a mix of files from before and after the pack operation.

This rename-first operation insures we're the only ones with the msgbase open
and since we have it locked, no one else should be able to open subsequently
either.

Updated the temp filename extenions to 4 chars now, so the operation goes like
this:

               ren                   pack                  ren
[*.shd/sdt/sid] -> [*.shd_/sdt_/sid_] -> [*.shd$/sdt$/sid$] -> [*.shd/sdt/sid]

Commented out the "duplicate index" message which was wrong (it's the header
that's duplicate, not the index) and a perfectly normal situation for mail
msgs to multiple recipients.

.