mirror of
https://github.com/phantomptr/ps5upload.git
synced 2026-10-22 03:42:55 -05:00
phantomptrandClaude Opus 5.5
c14782944d
Upload, install, convert and manage PS5 game packages over the network. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
84 lines
3.8 KiB
C
84 lines
3.8 KiB
C
#ifndef PS5UPLOAD2_PROC_IDENTITY_H
|
|
#define PS5UPLOAD2_PROC_IDENTITY_H
|
|
|
|
#include <string.h>
|
|
#include <sys/syscall.h>
|
|
#include <unistd.h>
|
|
|
|
/*
|
|
* Is this process name one of OURS?
|
|
*
|
|
* Every thread the payload creates shares the "ps5upload" prefix:
|
|
* "ps5upload.elf" (generic workers and main), plus the named helpers
|
|
* "ps5upload-wake", "ps5upload-fan" and "ps5upload-smp".
|
|
*
|
|
* That is only true because every thread entry point calls
|
|
* proc_name_set_self() as its first statement. It is NOT inherited: naming
|
|
* main alone was measured on a Phat 5.10 running v5.31.1 to leave the
|
|
* process listed as "payload.elf", because SYS_thr_set_name names only the
|
|
* CALLING thread and the kernel's representative thread is usually one of
|
|
* the ~15 unnamed workers. Any new pthread_create MUST name its thread too,
|
|
* or it reopens the reap gap described below.
|
|
*
|
|
* A prefix test rather than an exact compare is REQUIRED. The kinfo_proc
|
|
* record returned by sysctl(KERN_PROC_*) carries the name of whichever
|
|
* thread the kernel treats as representative, and that is not reliably the
|
|
* main thread: the SceShellCore FMEM dump in issue #289 listed our process
|
|
* as "ps5upload-wake". An exact compare against the main thread's name is
|
|
* exactly the bug that stopped runtime_reap_prior_instance from reaping its
|
|
* own wedged predecessor.
|
|
*
|
|
* It deliberately does NOT match "payload.elf" — the generic name elfldr
|
|
* gives every raw-streamed payload (elfldr.c:704 -> uri_get_filename falls
|
|
* back to the literal when there is no URI). Matching that would put kstuff,
|
|
* ShadowMountPlus, nanoDNS and every other payload on the console inside our
|
|
* SIGKILL radius.
|
|
*
|
|
* A bare prefix test is NOT enough, though: it also matches anything that
|
|
* merely STARTS WITH our prefix — "ps5uploader.elf", "ps5upload2-tool.elf",
|
|
* "ps5uploadX" — none of which are us. The byte immediately after the
|
|
* prefix must be a delimiter our four real names actually use: '\0'
|
|
* ("ps5upload.elf" truncated to 9 chars by the kernel's short tdname, or an
|
|
* exact 9-char name), '.' ("ps5upload.elf"), or '-' ("ps5upload-wake",
|
|
* "ps5upload-fan", "ps5upload-smp"). This function backs the kill radius of
|
|
* two SIGKILL loops (runtime_reap_prior_instance, runtime_sweep_our_instances),
|
|
* so a loose match here is a loose trigger finger against bystander homebrew.
|
|
*/
|
|
#define PS5UPLOAD2_PROC_PREFIX "ps5upload"
|
|
#define PS5UPLOAD2_PROC_PREFIX_LEN 9
|
|
|
|
/* The name every generic payload thread takes. Helpers with a dedicated
|
|
* role pass their own ("ps5upload-fan" and friends) — anything sharing the
|
|
* prefix satisfies proc_name_is_ours(). */
|
|
#define PS5UPLOAD2_PROC_NAME "ps5upload.elf"
|
|
|
|
/* Name the CALLING thread. Must be the first statement of every thread entry
|
|
* point: `-1` means "this thread", so it cannot be done on the creator's
|
|
* behalf from a pthread_create wrapper. Best-effort — a failure here costs
|
|
* identification, never correctness, so the return is deliberately ignored. */
|
|
#ifdef SYS_thr_set_name
|
|
static inline void proc_name_set_self(const char *name) {
|
|
(void)syscall(SYS_thr_set_name, -1, name);
|
|
}
|
|
#else
|
|
/* Host builds (the proc_identity selftest compiles this header on macOS and
|
|
* Linux) have no SYS_thr_set_name. Naming is a PS5-only concern, so the
|
|
* fallback is a no-op rather than a #error — it keeps the pure-logic
|
|
* proc_name_is_ours() tests buildable off-target. */
|
|
static inline void proc_name_set_self(const char *name) {
|
|
(void)name;
|
|
}
|
|
#endif
|
|
|
|
static inline int proc_name_is_ours(const char *name) {
|
|
if (!name) return 0;
|
|
if (strncmp(name, PS5UPLOAD2_PROC_PREFIX,
|
|
PS5UPLOAD2_PROC_PREFIX_LEN) != 0) {
|
|
return 0;
|
|
}
|
|
char delim = name[PS5UPLOAD2_PROC_PREFIX_LEN];
|
|
return (delim == '\0' || delim == '.' || delim == '-') ? 1 : 0;
|
|
}
|
|
|
|
#endif /* PS5UPLOAD2_PROC_IDENTITY_H */
|