https://gitlab.synchro.net/main/sbbs/-/commit/7ed974a8719b7e69117f4e63
Modified Files:
src/doors/clans-src/src/door.c door.h structs.h system.c
Log Message:
Use the standard "x" flag with fopen() for online semaphore
Also, fix the race condition inherent in the check-then-use method.
Now, it tries to create the semaphore file using mode "w+bx" and if
that fails, someone is online. If it succeeds, nobody is online.
With this, I'm not sure that the _fsopen() is even needed... will
need to go through the maint and ibbs options.
Also, instead of a binary representation of the node number, use
"Node: %d\n"
Add /EXCLUSIVE option
This option asserts that there are no other copies of the game
running, and it is safe to remove online.flg if it exists.
Create/test the semaphore before reading dynamic data
Also, on node 0, wait for the semaphore rather than exit.
So, it's expected you will set everything up line this:
Regular door: clans /Nx /Sx /Dxxxx
IBBS import: clans /I
Maint: clans /M /EXCLUSIVE
The IBBS import and Maint events need to run on the same node so that
an import won't be running at the same time as maint. If that's not
possible, leave off the /EXCLUSIVE option to maint, and keep an eye
on the flag file because processes will build up waiting on the
semfile in the case of a crash.
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