fix(native): controllers reach Steam and the install-script evaluator no longer blocks game moves

app/src/main/cpp/fakeinput_steam.cpp

@@ -2311,7 +2311,15 @@ __attribute__((visibility("hidden"))) static bool is_deck_sysfs_path(const char
   if (!path) return false;
   if (!strncmp(path, "/sys/devices/droiddeck", 22) || !strncmp(path, "/sys/class/hidraw", 17)) return true;
   const char *listing = deck_listing_dir();
-  return listing && !strncmp(path, listing, strlen(listing));
+  if (!listing) return false;
+  if (!strncmp(path, listing, strlen(listing))) return true;
+  // Without proot, a descriptor's /proc/self/fd link names the stand-in where it really is (the
+  // listing's parent holds devices/ and class-hidraw/), not /sys
+  const char *slash = strrchr(listing, '/');
+  if (!slash || slash == listing) return false;
+  size_t root = static_cast<size_t>(slash - listing);
+  return !strncmp(path, listing, root) && path[root] == '/' &&
+         (!strncmp(path + root, "/devices", 8) || !strncmp(path + root, "/class-hidraw", 13));
 }
 
 __attribute__((visibility("hidden"))) static bool is_deck_sysfs_fd(int fd) {

tools/linuxfs/overlay/usr/local/bin/droiddeck-game-env

@@ -1147,6 +1147,10 @@ def main():
     if scripts and install_scripts_done(scripts, env):
         print("droiddeck-game-env: install scripts already run in this prefix; evaluator skipped", file=sys.stderr)
         return 0
+    if scripts and not env.get("DBUS_SESSION_BUS_ADDRESS"):
+        # libdbus would autolaunch a session bus under the evaluator's reaper, which then waits for it
+        # forever: Steam keeps seeing the app as running and cannot move or update it
+        env["DBUS_SESSION_BUS_ADDRESS"] = "disabled:"
     try:
         digest = scripts_digest(scripts) if scripts else None
     except OSError:

tools/nativeguest/hook/fileops.c

@@ -13,6 +13,7 @@ int faccessat(int dirfd, const char *pathname, int mode, int flags) {
         errno = EFAULT;
         return -1;
     }
+    DDNATV_AT_REMAP(dirfd, pathname);
 
     struct stat st;
     int stat_flags = (flags & AT_SYMLINK_NOFOLLOW) ? AT_SYMLINK_NOFOLLOW : 0;
@@ -328,6 +329,7 @@ ssize_t readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz) {
     }
     static ssize_t (*orig_readlinkat)(int, const char *, char *, size_t) = NULL;
     if (!orig_readlinkat) orig_readlinkat = (ssize_t (*)(int, const char *, char *, size_t))dlsym(RTLD_NEXT, "readlinkat");
+    DDNATV_AT_REMAP(dirfd, pathname);
     char pbuf[PATH_MAX];
     const char *target = (pathname && pathname[0] == '/') ? rewrite_path(pathname, pbuf, sizeof(pbuf)) : pathname;
     ssize_t ret = orig_readlinkat ? orig_readlinkat(dirfd, target, buf, bufsiz) : -1;

tools/nativeguest/hook/files.c

@@ -121,6 +121,7 @@ int openat(int dirfd, const char *pathname, int flags, ...) {
     static int (*orig_openat)(int, const char *, int, ...) = NULL;
     if (!orig_openat) orig_openat = (int (*)(int, const char *, int, ...))dlsym(RTLD_NEXT, "openat");
     init_ddnatv_hook();
+    DDNATV_AT_REMAP(dirfd, pathname);
     char exe_buf[PATH_MAX];
     if (is_proc_self_exe(pathname)) {
         if (g_real_exe[0] != '\0') {
@@ -513,6 +514,7 @@ int lstat(const char *pathname, struct stat *statbuf) {
 int fstatat(int dirfd, const char *pathname, struct stat *statbuf, int flags) {
     static int (*orig_fstatat)(int, const char *, struct stat *, int) = NULL;
     if (!orig_fstatat) orig_fstatat = (int (*)(int, const char *, struct stat *, int))dlsym(RTLD_NEXT, "fstatat");
+    DDNATV_AT_REMAP(dirfd, pathname);
     char buf[PATH_MAX];
     const char *target = (pathname && pathname[0] == '/') ? rewrite_path(pathname, buf, sizeof(buf)) : pathname;
     int ret = orig_fstatat ? orig_fstatat(dirfd, target, statbuf, flags) : -1;
@@ -607,6 +609,7 @@ int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct
     __asm__ volatile("" : "+r"(pathname), "+r"(statxbuf));
     static int (*orig_statx)(int, const char *, int, unsigned int, struct statx *) = NULL;
     if (!orig_statx) orig_statx = (int (*)(int, const char *, int, unsigned int, struct statx *))dlsym(RTLD_NEXT, "statx");
+    DDNATV_AT_REMAP(dirfd, pathname);
     char buf[PATH_MAX];
     const char *target = (pathname && pathname[0] == '/') ? rewrite_path(pathname, buf, sizeof(buf)) : pathname;
     int ret = orig_statx ? orig_statx(dirfd, target, flags, mask, statxbuf) : -1;