The shared guest_memory_module gained a .elf0 section, so on Windows its
data was no longer counted against flexible memory and
CheckGuestModuleUsesFlexibleMemory failed. Build the .elf0 variant as a
separate guest_memory_elf0_module, keep the shared module as on main, and
check that a .guest.prx module without .elf0 is rejected.
fstat on a guest socket descriptor passed the guest number to the host,
which has no such descriptor, and threw ("FillFileStat: fstat failed for
fd 268435460"); sceKernelFstat returned EBADF. FreeBSD fills the stat
buffer for a socket through soo_stat (sys/kern/sys_socket.c):
bzero((caddr_t)ub, sizeof (*ub));
ub->st_mode = S_IFSOCK;
...
if ((sb->sb_state & SBS_CANTRCVMORE) == 0 || sbavail(sb))
ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
ub->st_size = sbavail(sb) - sb->sb_ctl;
...
if ((sb->sb_state & SBS_CANTSENDMORE) == 0)
ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
and pru_sense_null (sys/kern/uipc_socket.c) adds
st_blksize = so->so_snd.sb_hiwat.
fstat and sceKernelFstat now answer a guest socket from the socket
table: S_IFSOCK, the read bits until the receive side is shut down and
drained, the write bits until the send side is shut down, st_size from
the bytes queued and st_blksize from the send buffer size, other fields
zero. shutdown records which side it closed. A closed socket descriptor
returns EBADF. The differences from the console (peer shutdown, the
host's FIONREAD and SO_SNDBUF, socketpair identity) are listed in
TechnicalDebt.md.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The mimalloc in PS5MC (PPSA99420) reads vm.overcommit at start-up and
stopped on the unsupported name. It reports FreeBSD's default, 0.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The dolphin_libretro core of RetroArch (PPSA99169) reads {CTL_HW,
HW_REALMEM} as the machine's memory size and stopped on the unsupported
MIB. It reports the same value as hw.physmem.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Map made every singly mapped section page private resident memory. A JIT
or shm_open section is file backed and committed: its bytes live in the
file, and its alias descriptors map duplicated handles, which the physical
page slots do not match, so a resident copy diverged from the file, and
committing its view on a demote failed with access denied
(guest_jit_shared_memory). Only direct memory backings, mapped through the
new GuestArenaMapDirect, now become resident; other sections keep main's
shared views. Shared pages are committed only while their section page is
reserved, as on main.
The socket host write tests map their direct memory a second time, so the
write-protected shared path they check is still the one they exercise.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01V1W4jdNSKTV7xwuS6xQPJV
A direct memory page mapped at one guest address now lives in private
MEM_WRITE_WATCH memory at that address, and its writes are collected with
GetWriteWatch like flexible memory: no fault is raised. A page mapped at a
second address moves its whole resident run into the section, behind a
read-only fence while it is copied, and every address becomes a view of it,
tracked by write protection. Unmapped resident pages that are not blank are
kept in a private reservation until they are mapped again, not in the
section.
Ported onto main's 4 KiB subpage tracking of shared views: resident runs
keep a per-page collected bit and enter the fresh ranges, so Fresh and
Armed collections select them like shared views; a demoted run carries its
collected bits into the views and reports every page once. MapAlias throws
through refuse() when a resident run extends outside the aliased range, and
the caller keeps main's fallback.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01V1W4jdNSKTV7xwuS6xQPJV
Read the optional aligned budget from param.json and apply it consistently to configured, available and mapped flexible memory. Add parser and allocation regression coverage.
The per-descriptor lock exists only in the Windows transfer path, so ShareDescriptor calls SharePositionedTransfer under _WIN32 like GuestFileLockShare. Linux failed to link libkernel with an undefined reference to it.
FreeBSD sysctl_find_oid returns ENOTDIR when the MIB continues below a leaf object. The supported hw.ncpu, hw.model, hw.physmem and kern.arandom MIBs threw an unsupported MIB error instead.
(cherry picked from commit 6968aea8af578c4d56dc614cbe449274bb6e76e7)
PS5MC (PPSA99420, Kodi 22) imports getpriority (miQ1wVwSexE) from
libkernel.prx, one reference, next to chflags in its import order.
Predicted stop once the imports ahead of it are covered (not a run):
FAIL: unresolved ELF import miQ1wVwSexE from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 sys/kern/kern_resource.c sys_getpriority
(8c639945a44588f6cfdddfb057bb5aad88735da0) for the only guest process,
taken to run at nice 0 and to lead its own process group (as kill and
setsid already assume): PRIO_PROCESS and PRIO_PGRP with 0 or its pid,
and PRIO_USER with 0 or its uid 0, return 0; other ids give ESRCH and
an unknown which gives EINVAL. getpriority is a bare system call in
FreeBSD's libc (lib/libc/sys/Symbol.map), so errno is left unchanged
on success.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
(cherry picked from commit 63262245d274342b693fda146ae9feca3752b6e3)
Crimson Desert (PPSA25286) calls sceKernelStat with a null buffer at
start-up, and main throws "sceKernelStat: sb is null", which ends the
title in its first second.
FreeBSD 11.4 looks the path up first and only then copies the result
out, so a null buffer gets EFAULT for a path that exists and the lookup
error for one that does not (sys/kern/vfs_syscalls.c, sys_stat):
error = kern_statat(td, 0, AT_FDCWD, uap->path, UIO_USERSPACE,
&sb, NULL);
if (error == 0)
error = copyout(&sb, uap->ub, sizeof (sb));
sceKernelStat now does the same: the lookup and its errors are as
before, and a null buffer returns SCE_KERNEL_ERROR_EFAULT where the
status would be copied.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
PS5MC (PPSA99420, Kodi 22) imports chflags (ixrw0h2tWuI) from
libkernel.prx, one reference. Predicted stop once the imports ahead of
it (pthread_getthreadid_np, sendfile, wcstok, pause, setrlimit and the
termios calls) are covered (not a run):
FAIL: unresolved ELF import ixrw0h2tWuI from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 (8c639945a44588f6cfdddfb057bb5aad88735da0)
sys/kern/vfs_syscalls.c kern_chflagsat and setfflags, and
sys/ufs/ufs/ufs_vnops.c ufs_setattr, for a root caller: the lookup
through the guest resolver gives EFAULT, ENOENT and ENOTDIR (also for a
file reached through a trailing slash or used as a directory), a bit
outside the 17 UFS flags of sys/sys/stat.h (VNOVAL included) gives
EOPNOTSUPP, and SF_SNAPSHOT gives EPERM, since the snapshot flag cannot
be toggled. No host keeps BSD file flags and stat reports st_flags 0,
so flags 0 succeed without touching the file and any other flag throws
with the flags named. UF_READONLY and the other Windows-attribute flags
are not mapped to FILE_ATTRIBUTE_READONLY and its siblings: UFS stores
them without enforcing them, and on Windows the read-only attribute is
already the owner write bit of chmod.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
(cherry picked from commit 16e5b7ccd04e6467a5a282b6cfc9271304f42244)
Windows 10 1903 deletes a file with open handles by moving it into
$Extend\$Deleted until the last handle closes, so the next snapshot of a
watched file that a title (or the test) deleted saw a new path, tried to
watch that directory's changes, got ERROR_ACCESS_DENIED and threw from
the watch thread, which aborts the process; the path change was also
reported as NOTE_RENAME next to NOTE_DELETE. A snapshot with a pending
delete or no links now reports NOTE_DELETE alone and drops the parent
directory watch instead of replacing it, as the file has no directory
to be renamed or removed from any more.
FreeBSD sysctl_root rejects a write to a read-only node with EPERM before the node handler checks the MIB length, so a write with a short or long kern.proc.pathname MIB fails with EPERM. sysctlbyname for kern.proc.pathname now goes through sysctl with its 3-component MIB so it follows the same order.
Dean