fopen and freopen in an append mode gave the C runtime a descriptor with
_O_APPEND, which seeks to the end of the file and then writes. Streams on
separate descriptors overwrote each other's data. FreeBSD opens these
streams with O_APPEND, so every flush lands at the end of the file.
Open append streams with FILE_APPEND_DATA but without FILE_WRITE_DATA,
so Windows writes each flush at the end of the file. ftruncate and
flock reopen the file to get the access such a handle lacks.
A mounted folder uses the junction reparse tag and would otherwise be returned as a relative Volume GUID path. Only a drive path is reported, through the absolute-link text helpers.
Prospero Themes (PPSA90210) imports nmount (3YnXspQNyw8) from libkernel
and fails to load without it:
"./app.elf: symbol lookup error: ./app.elf: undefined symbol: 3YnXspQNyw8".
Mounting file systems is not supported, so it throws if called, like
execvp does for executable replacement. The title opens its theme
library without calling it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sovthwyu4H63RMbRVha2Sy
The Linux path mapped ENOTDIR from getdents64 to EINVAL, but a pipe or FIFO
still failed with ESPIPE from the lseek that reads the base offset first.
FreeBSD 11.4's kern_getdirentries returns EINVAL for any descriptor that is
not a directory vnode, pipes included, and EBADF for one that is not open.
Check the descriptor with fstat before the lseek: EBADF and other host
errors are passed through, and anything that is not a directory returns
EINVAL. The getdents64 error line is unchanged again, and the technical debt
entry is removed since no difference is left.
Written with AI assistance (Claude).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sceKernelGetdirentries on a descriptor that is not a directory returned
ENOTDIR from the host getdents64 on Linux, and ENOTDIR for every descriptor
missing from the directory table on Windows, including invalid ones.
FreeBSD 11.4's kern_getdirentries returns EINVAL when the vnode is not a
directory.
Return EINVAL for a regular file on both hosts and EBADF for an invalid
descriptor on Windows. Test getdents and getdirentries on a regular file and
list the pipe case, which still fails with ESPIPE on Linux, in the library's
technical debt file.
Written with AI assistance (Claude).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
poll threw for any descriptor that is neither a socket nor a pipe, so a title polling a file it also reads stopped there. FreeBSD 11.4 hands a vnode to VOP_POLL, and both vop_stdpoll and vop_nopoll return POLLIN, POLLRDNORM and POLLOUT of the requested events for every event poll accepts and never POLLPRI, POLLRDBAND or POLLWRBAND. A file, a directory or a file read from app0.zar now answers that without a host call. File::IsVnode tells such a descriptor apart from the host file type without throwing, so a host socket lent by libSceNet still reaches its own path.
lstat and readlink aborted on an absolute symbolic link because only a relative reparse point was accepted. Read the link text, and still refuse reparse points that are not symbolic links.
fcntl threw for F_GETLK with an F_UNLCK request on the hosts that use POSIX locks, as Linux's F_GETLK rejects that type. FreeBSD 11.4's kern_fcntl accepts it and lf_getlock reports the first overlapping lock that lf_blocks lets conflict: another owner's lock, one of the two being a write lock. For an F_UNLCK request that is exactly another owner's write lock, the same set an F_RDLCK request finds, so the host is asked with F_RDLCK and the reply is written back as for the other types.
FreeBSD's fstat looks the descriptor up before it copies the result
out, so a bad descriptor still fails with EBADF and an open one fails
with EFAULT when sb is null. fstat and sceKernelFstat threw
std::invalid_argument instead.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
FreeBSD's read, write, pread and pwrite reject a byte count above
IOSIZE_MAX with EINVAL before they look up the descriptor. write threw
std::invalid_argument for a negative count, and the others passed the
count on to the host, which reports EFAULT on Linux.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
read and write already fail with EFAULT for a null buffer and a
non-zero length and treat a zero-length null buffer as empty. The
sceKernel entry points threw std::invalid_argument for both. They now
do the same as read and write.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Titles that bundle OpenSSL load the console's CA file from the sandbox
directory and fail every HTTPS request without it. ProsperoRadio
(PPSA99001, libcurl 8.18.0 + OpenSSL 3.5.2) on main + #4796 + #4525:
[ProsperoRadio][http] https://all.api.radio-browser.info/json/servers: Problem with the SSL CA cert (path? access rights?) (error adding trust anchors from file: /gkbHtXc3Wq/common/cert/CA_LIST.cer)
SwanStation (PPSA98510) stops on the same file (#5001).
The guest path resolver now accepts exact-path providers, and libkernel
registers one for /<sceKernelGetFsSandboxRandomWord()>/common/cert/CA_LIST.cer.
On first use it writes a PEM bundle once per process to
cert_cache/CA_LIST.cer in the run directory, read-only: on Windows the
current user's ROOT and CA system stores, elsewhere SSL_CERT_FILE or the
first distro bundle that exists. Without a certificate the path keeps
resolving under the guest root and does not exist, as before. Every other
path under the sandbox word is unchanged. The console file's format and
the rest of its common/cert directory are unverified and recorded in
docs/dev/debt/libkernel.md.
With this change, #4796, #4525 and #5025 on Windows 11, 60 s each:
[ProsperoRadio][http] 11846160 bytes in 1458 ms: 1161 passes, 803 waits (679 woken) for 1428 ms
[ProsperoRadio][catalog] page offset=0 bytes=11846160 objects=10000 accepted=9549 total=9549
...
[ProsperoRadio][catalog] page offset=60000 bytes=1712035 objects=1494 accepted=1436 total=59371
[SwanStationPS5] update: latest 1.2.5, this 1.1.3, available
[SwanStationPS5] gamedb: index written
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Its callers (NativePositioned_nid_no_patch, the vectored transfer) already hold the
non-recursive per-descriptor lock, so locking again deadlocked every positioned transfer.
Co-Authored-By: Claude <noreply@anthropic.com>
On Windows the C runtime appends by seeking to the end and then writing,
so concurrent appends through different descriptors overwrite each other
and lose data. Write and writev on an O_APPEND descriptor now go through
WriteFile at the end-of-file offset, which Windows appends atomically,
and writev gathers its buffers into one append as FreeBSD writes the
whole vector at the end.
flock, fstatfs, ftruncate, fsync, fdatasync, getdirentries, fchmod, futimes and mmap on an archived descriptor acted on its null device and succeeded or failed with an unrelated errno. They now throw NotImplemented, each covered by the kernel archive test; mmap is noexcept, so its refusal is checked through the terminate handler.
sceKernelOpen and open give an archived file a read-only null-device descriptor. Reads, positioned, vectored and AIO reads, seeks, fstat and FIONREAD are served from the archive; dup, dup2 and F_DUPFD share the position. sceKernelStat and sceKernelCheckReachability see archived paths.
Writing opens fail with EROFS, O_CREAT|O_EXCL with EEXIST and O_DIRECTORY on a file with ENOTDIR. Opening an archived directory or one merged with the disk throws until getdents can list it.
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.
Adrià