Every export of pspnet_inet.prx but the address conversions starts with
sceKernelCheckThreadStack(), and fails without doing anything if the
thread has less than 0x1000 bytes of stack free (0xFE0 for socket()):
the socket calls with -1, without setting errno, and Init, Term,
GetErrno, GetPspError and SocketAbort with 0x80410005. Each function's
limit plus its own stack frame comes to that. pspautotests
net/inet/errnothread shows it on a thread with a 4 KB stack.
GetPspError is 0x80010000 | errno, and 0 for no error, rather than a
table of guesses, so 0x80010001 on a thread with no errno record yet
(net/inet/errnothread).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
errno:
- A thread that hasn't made a call yet reads 0x80410001 from GetErrno,
as the PSP has no errno record for it until then. errno is saved in
savestates now, in a new sceNet section version.
- socket(), close() and setsockopt() clear it when they succeed.
- Running out of descriptors is EMFILE, at 255 like the PSP, and an
unconnected UDP socket sending without an address EDESTADDRREQ, which
Winsock calls ENOTCONN.
- On Windows, ENOBUFS, EPROTOTYPE, ENOPROTOOPT, EMSGSIZE, ENETRESET and
EDESTADDRREQ now map to the PSP's errnos. They only did elsewhere.
All from pspautotests net/inet/errors, options and errnothread.
The socket table:
- Descriptor numbers are handed out round-robin up to 255, as on the PSP
(net/inet/states), rather than the lowest free one.
- Closing frees the slot even if the host's close fails, and Close and
CloseAll take the lock the rest of SocketManager does.
- accept no longer leaks the host socket when it runs out of numbers.
- bind no longer asks UPnP to forward port 0, and closing the socket
removes its forward, unless another socket still uses the port.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
