socket() returned EPROTONOSUPPORT for every socket type it does not create.
FreeBSD 11.4's socreate returns EPROTOTYPE when no protocol is found, the
protocol is 0 and the type is not 0, and EPROTONOSUPPORT when a protocol was
given. Its inet domain (in_proto.c) has SOCK_RAW entries in every kernel and
a SOCK_SEQPACKET entry only with SCTP, and no SOCK_RDM or other type.
Return EPROTOTYPE for a type the inet domain never has, such as SOCK_RDM,
with protocol 0. SOCK_RAW and SOCK_SEQPACKET keep EPROTONOSUPPORT, since
whether the console creates them is not known. Test the unknown types and
mismatched protocols for AF_INET and AF_INET6, and list the socket types and
families that are not created in the library's technical debt file.
Written with AI assistance (Claude).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
poll threw for /dev/random and /dev/urandom, which select already treats as ready. FreeBSD 11.4's randomdev_poll, once the device is seeded, narrows a request that has POLLIN or POLLRDNORM to those bits and returns any other request whole, POLLOUT and the band bits included. poll now answers that, and the test that relied on the random device throwing uses a kqueue descriptor, which poll still does not support.
libkernel numbered guest sockets from GuestSockets::FirstDescriptor
(0x10000000), so a title that puts a socket in a 1024-bit fd_set writes
fd / 8 bytes past it. The Epic Online Services SDK does this on its
RtcNetworkThread and three titles stop there (#1794):
Palworld PPSA23126 (queeeef, main a11c8f7f7):
FATAL: unhandled exception 0xc0000005 on thread 37164 'RtcNetworkThread'
rip 0x00007ffcdb1ea2be eossdk-ps5-shipping.prx.guest.prx+0xdea2be
rcx 0000000010000005 rsi 0000000000400000 r12 0000000010000005
The Mound PPSA26223 (xXPBSXx, main 0a8b1d32b):
FATAL: unhandled exception 0xc0000005 on thread 'RtcNetworkThread',
rip eossdk-ps5-shipping.prx.guest.prx+0xefc6f4, rcx = 0x10000005,
rsi = 0x400000
Dying Light 2 PPSA02262 (tv7):
FATAL: unhandled exception 0xc0000005 on thread 'RtcNetworkThread'
rcx 0000000010000005 ... rsi 0000000000400000 ... r12 0000000010000005
On FreeBSD 11.4 (8c639945) FD_SETSIZE is 1024 (sys/sys/select.h:58-59)
and sockets take the lowest free entry of the one process descriptor
table that files use (kern_descrip.c:1643-1660 fdalloc,
uipc_syscalls.c kern_socket through falloc).
Every socket number is now a real host descriptor: a zero-access NUL
handle registered with _open_osfhandle on Windows (as directory
descriptors already are) and an F_DUPFD_CLOEXEC duplicate of the host
socket on Linux. The socket table maps that number to the socket, so
"is this a socket" is a table lookup instead of a range check at the 31
former FirstDescriptor comparisons. close releases both the socket entry
and the number, dup and dup2 duplicate the number through the host table
and keep the socket shared, dup2 of a file onto a socket number drops the
socket entry, and sceKernelClose now closes sockets too. sceNetSocket and
sceNetAccept take their ids from the same table instead of a counter from
32, so libkernel and libSceNet numbers never collide.
select polls guest sockets alongside libSceNet sockets, the random device,
stdio and (on Linux) host descriptors; poll throws only for an open
descriptor that is not a guest socket and reports POLLNVAL otherwise.
File calls that used to fail with EBADF on the socket range return
FreeBSD's answer for a socket: lseek ESPIPE (kern_lseek), ftruncate and
getdirentries EINVAL (invfo_truncate, getvnode), flock EOPNOTSUPP;
fstat on a socket throws. pread on a closed descriptor returns EBADF.
title failing on host descriptor numbers; these three titles are that
case, and this change keeps host numbering for files and only moves
sockets into it.
Tests: guest_socket_descriptors (new: socket below 1024, select on a
socket and a file together, close frees the number for a file, dup of a
socket, sceKernelClose), guest_select (socket and pipe together, Linux),
guest_poll, guest_dup, guest_socket_pair, guest_fstatfs,
guest_posix_filesystem and guest_sce_net updated.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 20378375b31eb5db922db6e55f45e44a4dae6445)
MarcZX10