wild 0.10.0 gives no canonical PLT entry to a DSO function whose address a
non-PIE executable takes (wild-linker/wild#2469, fixed after the release by
#2480), so the absolute personality pointer in .eh_frame names a local stub
and every exception reaching main is unhandled.
Co-Authored-By: Claude <[email protected]>
On a new knote EV_FORCEONESHOT is dropped from the flags; on an
existing one it sets EV_ONESHOT and fires the knote, as
kqueue_register does at l.1339-1341. A modify no longer ORs
EV_ONESHOT, EV_CLEAR or EV_DISPATCH into the knote.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
A knote registered or modified with EV_DISABLE stays registered but is
not polled, fired or reported until an EV_ENABLE change re-arms it, as
kern_event.c does with KN_DISABLED. EV_DISPATCH reports an event once
and then disables the knote, and EV_FORCEONESHOT registers as oneshot.
A negative nevents fails with EINVAL instead of throwing.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
A read-only open, stat or reachability check of a missing path listed its
directory twice: once for a case-insensitive match of the name and again for
a case-insensitive match of the relinked <name>.guest.prx (#5434). Both
names are now matched in the same listing. Precedence and the ambiguous-name
errors are unchanged.
Follows mlockall (#4386) for XPSemu (PPSA97358, QEMU os-posix.c), which
imports munlockall (NpLBpgVV7PU) from libkernel.prx. Predicted stop:
FAIL: unresolved ELF import NpLBpgVV7PU from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 sys/vm/vm_mmap.c sys_munlockall
(8c639945a44588f6cfdddfb057bb5aad88735da0): checks PRIV_VM_MUNLOCK,
clears wire state and returns 0. To match, munlockall unlocks ranges
locked by mlock (through VirtualUnlock on Windows, tolerating
ERROR_NOT_LOCKED, and munlockall on Linux).
The Windows error for a refused FindFirstChangeNotification was one string shared
by WatchParent and WatchContents, so the log could not tell which handle or path
was denied. Build it from the watcher, the path the API was given and
GetLastError instead.
Still throws: the EVFILT_VNODE attach path is vfs_kqfilter, which returns only
EINVAL, ENOMEM or 0, with EBADF from fget before it, and consults no directory
permission, so no FreeBSD errno stands for a host that refuses to notify.
With libSceNet sockets on ordinary descriptor numbers (#4391), poll on a
libSceNet socket threw "neither a socket nor a pipe": poll only knew
libkernel sockets and pipes, while select already asks libSceNet through
its poller. libSceNet now lends libkernel the host socket behind a
descriptor, together with an owner that keeps it open, so poll puts it in
the same WSAPoll or poll call as libkernel sockets. ProsperoLight
(PPSA99002) stopped here on Linux and now reaches its PC list.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EvDbpwUPTa78oCAJqe7m9K
fcntl on a guest socket handled F_GETFL and F_SETFL only and failed every other command with EINVAL, so libcurl's fcntl(fd, F_SETFD, FD_CLOEXEC) on a new socket failed (ProsperoRadio PPSA99001, traced by screamm on #4796). Record FD_CLOEXEC per socket descriptor: F_SETFD sets or clears it, F_GETFD reads it, SOCK_CLOEXEC sets it at creation, and dup, dup2 and close start without it, as FreeBSD's kern_fcntl and kern_dup do.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
With libSceNet sockets on ordinary descriptor numbers (#4391), a title
that makes a libSceNet socket non-blocking with plain fcntl(F_GETFL) and
fcntl(F_SETFL, O_NONBLOCK) reached File::Fcntl, whose classification
throws for a socket. libSceNet now registers a status control with
libkernel, like its option setter: F_GETFL returns O_RDWR with the
socket's non-blocking flag, F_SETFL sets it through SO_NBIO, as fcntl
already does for libkernel sockets. ProsperoLight (PPSA99002) stopped
here on Linux.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017WeVmjnnPPKdxVTpr2Vjtw
lstat of a Windows symbolic link threw, although symlink creates links
with relative targets on Windows and readlink reads them. Report such a
link as S_IFLNK with its own identity and times and the length of its
target as st_size, through the reparse reader readlink already used,
now shared from libkernel. Links with absolute targets, junctions and
other reparse points still throw, as for readlink.
Guest descriptors are host C runtime descriptors. Closing descriptor 0, 1
or 2 closed the host process's standard stream, and the runtime then gave
that number to the next file opened anywhere in the process, including
files libkernel opens itself, such as the APR reader's. The title's next
close of the same number closed that file mid-read.
close and sceKernelClose now fail with EBADF for descriptors 0 to 2 that
were open when libkernel loaded, and leave them open. A standard
descriptor that was not open at load can still be opened and closed by
the guest.
PPSA21703 calls sceKernelClose(0) repeatedly while loading asset
bundles, which made APR reads return 0 or a part of the requested bytes
and raised UCRT invalid parameter reports from close.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
A mapping without MAP_FIXED treated its address as the lowest place it
could go, and a hint at or above the end of the guest arena threw on the
host. FreeBSD 11.4's vm_mmap_object places such mappings with
vm_map_find_min, which takes the address as a hint only: it tries at or
above it, then again from its minimum address.
GuestArenaAllocateFromHint does the same in the arena: at or above the
hint when it lies below the arena's end and a range fits there, otherwise
from the arena's start. MapPlaced and the Windows mmap_aligned use it for
hinted mappings; GuestArenaAllocateAtOrAbove keeps its meaning for the
callers that need a range above an address.
PS5CEMU-HAR (PPSA99360) reserves its JIT range with
sceKernelReserveVirtualRange and a hint near its own code, a host address
above the arena here, and aborted with "mapping address hint is above the
guest address space arena" when launching a 3DS title.
Morrowind imports rtprio_thread, pthread_setconcurrency and pthread_getconcurrency and stops at start-up. Report every guest thread as normal priority and accept a set without applying it; store the concurrency level as a hint. Recorded in the libkernel debt.
