WebKit links these calls through GNU ld --wrap, so each export takes the
signature of the function it is named after and calls the libkernel_sys
or libSceLibcInternal implementation; the module now links both.
gethostbyname_r and sysinfo are names of host C library functions. Defining
them in libScePosixForWebKit made the library's own call to
::gethostbyname_r in Resolver.cpp bind to the new declaration, and the
guest_resolver test failed with "gethostbyname_r not implemented". Export
the two NIDs through a helper with the library's own prefix, the way
libSceAmpr re-exports the libc functions.
AnyPS5 resolves a title's imports by NID, so a title that imports a system
function that no AnyPS5 library provides fails to load with an unresolved
import. This declares 222 such exports across 11 PS5 system libraries that
AnyPS5 implements but does not provide.
Each declaration calls NotImplemented_nid_no_patch and returns 0; none of
them implements the function. A declaration with a credible prototype uses
it and cites the source with a pinned commit; the rest are declared without
parameters, which resolves the import without making an ABI claim. The
technical-debt files record the limitation per library.
The list is the intersection of the export table of the console's library
(function symbols only), the pinned aerolib names and the functions not yet
defined anywhere in the repo. Every name recomputes to its NID with
tools/nid_names.py.
libSceAudio3d and libSceVoice are left out because #8331 declares them.
Implement getservbyname (H1bArJPagV0) in libScePosixForWebKit. Cloud
Play (PPSA99600) imports it from this library only (registry index 408,
call site 0x1042124); once fnmatch (#3545) is in, its predicted load
stop is:
FAIL: unresolved ELF import H1bArJPagV0 from libScePosixForWebKit.prx
The ps5-payload-dev SDK stubs (f5d40f02, sce_stubs/) declare
getservbyname in libScePosixForWebKit.c and not in libkernel.c or
libSceLibcInternal.c. The call site is the service-name branch of a
getaddrinfo inside the title: a non-numeric service is looked up with
protocol "tcp", "udp" or "sctp" and the port is read big-endian at
offset 16 of the result, which fixes the servent layout used here
(name, aliases, 32-bit port, protocol at 0, 8, 16, 24).
The guest has no /etc/services and the console's file is unknown, so the
function searches 37 lines of FreeBSD 11.4 etc/services (8c639945):
ftp-data, ftp, ssh, telnet, smtp, domain, tftp, http, pop3, ntp, imap,
https, rtsp, submission, imaps and pop3s with their aliases and
protocols, in file order. None of their names or aliases appears on an
earlier line of the full file, so these lookups answer as the full file
would. The search follows files_servent in lib/libc/net/getservent.c
(8c639945): exact, case-sensitive match on the name or an alias, a null
protocol takes the first match, the port in network byte order, the
result in per-thread storage like getserv's NSS TLS state. Any other
name returns null without touching errno, as for a name the file lacks.
The repository's getaddrinfo still resolves service names through the
host, so there was no table to share; this is recorded in
TechnicalDebt.md.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Itamar Medyoni