From b6aae91a52cd95c03947d27bb786fe32bf73d51a Mon Sep 17 00:00:00 2001
From: Brad Stein <brad.stein@gmail.com>
Date: Fri, 4 Jul 2025 15:11:39 -0500
Subject: [PATCH] fixing daemon for cam

---
 scripts/daemon/lesavka-core.sh | 55 ++++++++++++++--------------------
 1 file changed, 22 insertions(+), 33 deletions(-)

diff --git a/scripts/daemon/lesavka-core.sh b/scripts/daemon/lesavka-core.sh
index dc66968..e6d36da 100644
--- a/scripts/daemon/lesavka-core.sh
+++ b/scripts/daemon/lesavka-core.sh
@@ -132,51 +132,40 @@ echo 333333  >"$F/streaming/uncompressed/u/f1/dwDefaultFrameInterval"  # 30 fp
 echo 333333  >"$F/streaming/uncompressed/u/f1/dwFrameInterval"
 
 # ── 3.  REQUIRED HEADER LINKS ──────────────────────────────────────
-mkdir -p "$F/streaming/header/h"
+header_h="$F/streaming/header/h"          # convenience variables
+fmt_dir="$F/streaming/uncompressed/u"
 
-# ----------------------------------------------------------------------
-#  DEBUG / DEFENSIVE  – show what exists and create again if needed
-# ----------------------------------------------------------------------
-if ! [ -d "$F/streaming/header/h" ]; then
-    echo "→ header/h vanished – recreating" >&2
-    mkdir -p "$F/streaming/header/h"
-fi
-echo "→ AFTER mkdir   : $(ls -ld $F/streaming/header/h)" >&2
-echo "→ PARENT header : $(ls -ld $F/streaming/header)"   >&2
-echo "→ CONTENTS      : $(ls $F/streaming/header)"        >&2
-# ----------------------------------------------------------------------
+mkdir -p "$header_h"
 
-# 3‑a  Link format #1 into the header *first*
-for _ in {1..50}; do                               # max 50 × 2 ms = 100 ms
-    [ -e "$F/streaming/header/h/bmInfo" ] && break
-    sleep 0.02
+# wait until the kernel has rebuilt the directory and added its attribute
+# files (bmInfo is always created by the driver)
+for _ in {1..50}; do
+    [ -e "$header_h/bmInfo" ] && break
+    sleep 0.010          # max 0.5 s total
 done
 
-ln -sf ../../uncompressed/u  "$F/streaming/header/h/1"
-echo 1 >"$F/streaming/header/h/bNumFormats"
-echo 0 >"$F/streaming/header/h/bmInfo"
+# ABSOLUTE symlink → no relative elements, name is “fmt” (not “1”)
+ln -sf "$fmt_dir"  "$header_h/fmt"
+echo 1 >"$header_h/bNumFormats"
+echo 0 >"$header_h/bmInfo"
 
-# 3‑b  Wait for the kernel to create the class/{fs,hs,ss} dirs (≤100 ms)
+# per‑speed class directories (absolute links)
 for s in fs hs ss; do
-    for _ in {1..20}; do
-        [ -d "$F/streaming/class/$s" ] && break
-        sleep 0.005
-    done
-    ln -sf ../../header/h  "$F/streaming/class/$s/h"
+    mkdir -p "$F/streaming/class/$s"
+    ln -sf "$header_h"  "$F/streaming/class/$s/h"
 done
 
-# 3‑c  CONTROL‑side header uses the same directory
-mkdir -p "$F/control/header/h"
+# control‑interface header – share the very same directory
+mkdir -p "$F/control/header"
+ln -sf "$header_h"  "$F/control/header/h"
 for s in fs hs ss; do
-    for _ in {1..20}; do
-        [ -d "$F/control/class/$s" ] && break || sleep 0.005
-    done
-    ln -sf ../../header/h  "$F/control/class/$s/h"
+    mkdir -p "$F/control/class/$s"
+    ln -sf "$header_h"  "$F/control/class/$s/h"
 done
 
-# Friendly string for the camera entity
+# friendly label
 mkdir -p "$F/control/header/strings/0x409"
-echo "Lesavka UVC" >"$F/control/header/strings/0x409/label"
+echo "Lesavka UVC" >"$F/control/header/strings/0x409/label"
 
 # ----------------------- configuration -----------------------------
 mkdir -p "$G/configs/c.1/strings/0x409"