Run 40579197008 (main 771d8b5bf7) failed guest_posix_spawn. Under load the child
of CheckStoppedChild exits right after SIGCONT, so waitpid(WCONTINUED) reports the
exit instead of 0x13 (reproduced with 24 CPU spinners via ctest --repeat). The
child now sleeps 2 s after the stop.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
waitpid translated the stop and termination signal of a child from the
Linux numbering to the FreeBSD one on every non-Windows host. Darwin
already numbers its signals like FreeBSD, so on macOS the translation
broke them: a child stopped by SIGSTOP (17) was reported as stopped by
20, SIGBUS (10) as 30, SIGSYS (12) as 31, and a child killed by SIGUSR1 (30)
made waitpid report a missing guest equivalent.
macOS now passes the host signal through. The spawn test finds its own
executable with _NSGetExecutablePath on macOS instead of /proc/self/exe,
and also checks a child killed by SIGUSR1, whose number differs between
Linux and FreeBSD and which macOS used to reject.
The child environment was copied from _environ, which holds the ANSI code
page, so any non-ASCII variable made posix_spawn reject it as invalid UTF-8.
Read the wide environment block and convert each entry to UTF-8 instead.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Dusklight (PPSA99305) aborts on main as soon as its Select disc image
item is chosen: SDL's file dialog probes "zenity --version" through
posix_spawnp, and posix_spawnp throws "process creation not implemented".
FreeBSD 11.4's posix_spawn returns the error of the child's exec, and
an exec of a program that is in no directory of PATH (_PATH_DEFPATH
when PATH is unset) fails with ENOENT. Both calls now return ENOENT
without writing the process ID when the program is not in the guest
file system, and keep throwing when it is. SDL then reports the file
dialog as unsupported and the title stays on its menu.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
XPSemu (PPSA97358) imports eleven posix_spawn calls from
libSceLibcInternal.prx, one reference each, and no call site is known.
Predicted stop (import order, not measured), behind isnanf (idx 296):
`FAIL: unresolved ELF import 44hlATrd47U from libSceLibcInternal.prx`
(posix_spawnattr_init, idx 347), followed by p--TkNVsXjA, LG6O0oW9bQU,
Sj7y+JO5PcM, Ud8CbISKRGM, Hq9-2AMG+ks, IUfBO5UIZNc, Heh4KJwyoX8 (348-355),
UV4m0bznVtU, Ani6e+T-y6Q and 3Nr9caNHhyg (379-381).
The nine object calls follow FreeBSD release/11.4.0 (8c639945a445)
lib/libc/gen/posix_spawn.c: posix_spawnattr_init allocates a zeroed
attribute object (ENOMEM on failure), _destroy frees it, _setflags and
_setsigdefault store the value; posix_spawn_file_actions_init allocates an
empty list (-1 on failure, as in 11.4), _destroy frees it with its
entries, and _addopen (path copied), _adddup2 and _addclose append in
order after returning EBADF for a negative descriptor. Null or
uninitialized objects, which FreeBSD dereferences, throw.
posix_spawn and posix_spawnp throw "process creation not implemented",
as execvp does: FreeBSD validates no argument before rfork/vfork, and no
child process can be created here. TechnicalDebt records them.
guest_posix_spawn covers the attribute round trips, the recorded action
sequence, the EBADF cases and the throws. NIDs computed with
tools/nid_names.py and present in aerolib.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Adrià