The call threw for lack of a signature. In the PS5 12.00 libkernel it takes
one int, passes it to syscall 601 (command 29) and returns the raw kernel
result. No dump is produced here, so it returns 0, as
sceCoredumpConfigDumpMode does.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RbLgECLQ2bpDM7oe2urGZK
Follow FreeBSD 11.4 sys_getresuid and sys_getresgid (sys/kern/kern_prot.c):
retrieve real, effective, and saved user and group IDs for the guest process,
which is assumed to run as root with IDs 0. Pointers that are not null receive 0,
null pointers are ignored, and 0 is returned leaving errno unchanged on success.
Cover both in guest_credentials test and update libkernel debt documentation.
Debt entries name the titles they were measured on. Use the title ID, or "a retail title" where the sentence needs no identification. No technical content changes.
siginterrupt is a libSceLibcInternal export (the public SDK's stub table has it there, not in the
kernel tables) and FreeBSD 11.4's lib/libc/gen/siginterrupt.c reads the signal's disposition,
sets or clears the signal's bit in _sigintr and SA_RESTART, and installs the disposition again.
libc cannot call libkernel, so, as the pthread hooks do, libc keeps a registered sigaction and
the address of the _sigintr set, and libkernel registers both from a static initializer when it
loads. A call before that throws; the set is written without libkernel's registration lock, as
FreeBSD's libc does. Builds on #8866, which adds the set.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
The public SDK's libkernel, libkernel_sys and libkernel_web stub tables declare _sigintr, the
sigset_t that FreeBSD's libc shares between signal and siginterrupt, and no built library
provided it (#8846). libkernel now exports the 16-byte object, zero at start, and signal records
a handler with SA_RESTART unless its signal is in the set, as lib/libc/gen/signal.c does.
siginterrupt, which fills the set, is a libSceLibcInternal export; libc does not link libkernel
and cannot reach the dispositions, so it stays out and a debt entry for signal says so.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
pthread_kill(thread, 0) returned 0 for every handle other than the caller's before it asked whether the thread was still alive. FreeBSD's _pthread_kill looks the thread up with _thr_find_thread before it checks for signal 0, so the call answers ESRCH for a thread that has ended or was never a thread. The liveness check now runs before the signal 0 shortcut; the calling thread still answers 0.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Keep main's WaitOnKey helpers from #8304 and build the measured
sceKernelSyncOnAddressWait results on them: the wait's ready check now
records whether the value differed, and Wake returns the waiters woken.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Since #8512 a raise redirects a target running host code once 50 ms have
passed since the raise began. A target inside a system call that is not a
wait, such as the NtWriteFile of an fwrite that holds its stream lock, can
stay there longer; the redirect then ran the handler with the lock held.
SONIC SUPERSTARS froze at frame 67 again on main this way, with its GC
raise delivered at ntdll!ZwWriteFile+20.
A target stopped right after a syscall instruction in ntdll now restarts
the 50 ms host-code window, so the raise keeps sampling until the call
returns and the target leaves host code, bounded by the 1 s retry limit.
guest_raise_in_system_call holds a writer in NtWriteFile on a slowly
drained pipe; it times out on main and passes with this change.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
kevent threw NotImplemented for EVFILT_WRITE with NOTE_LOWAT above 1 on a socket, although the socket readiness check already reports free send-buffer space (SO_SNDBUF less SIOCOUTQ on Linux). The write event now fires once that space reaches the mark, as FreeBSD 11's filt_sowrite compares sbspace with kn_sdata, and stays silent while the space is below it. The debt entry no longer says a write mark is limited to 1. Reference: https://github.com/freebsd/freebsd-src/blob/release/11.0.0/sys/kern/uipc_socket.c
FreeBSD 11.4 kern_mprotect masks the argument with VM_PROT_ALL instead of
refusing it (sys/vm/vm_mmap.c:613). sceKernelMprotect already does this
since #5770; the POSIX mprotect export still failed with EINVAL.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
FreeBSD 11's kern_pipe opens both ends with FREAD | FWRITE, so F_GETFL
reports O_RDWR on each. The host pipe ends are one-way, so the access
mode came back as O_RDONLY and O_WRONLY. Descriptors made by pipe() are
now marked in the guest descriptor table, the mark follows dup, dup2 and
F_DUPFD, and F_GETFL reports O_RDWR for them.
