The title id now comes from GetAppTitleId, so param.json has one parser and
its validation (a missing file or titleId throws). Another pid returns EPERM
and a null info returns 0 without writing, as shadPS4 does. app_id stays 1,
the running title's id in libSceSystemService, which is inferred, not
measured.
guest_app_info runs the call without param.json in a child process and
checks that the field between app_id and the title id is left alone.
AI-assisted (Claude Code).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sceKernelGetAppInfo fills the app id and the title id of the calling
process: app id 1, the running title's id in libSceSystemService, and the
titleId of /app0/sce_sys/param.json at offset 0x10, up to 9 characters and a
terminator. Only those fields are written, since callers declare the
structure with different sizes. Another pid returns ESRCH and a null info
EFAULT.
AI-assisted (Claude Code).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Scott Schuster