Initial commit

root-module/post-fs-data.sh

@@ -0,0 +1,52 @@
+#!/system/bin/sh
+# CamSwapper HAL Hook - Root module post-fs-data script
+# Runs BEFORE class_start hal.
+# Strategy: Use wrap. property to inject LD_PRELOAD into cameraserver.
+# On Pixel devices, the camera HAL is loaded in-process by cameraserver,
+# not as a separate provider service.
+
+MODDIR="${0%/*}"
+HOOK_LIB="$MODDIR/libcamera_hook.so"
+CONFIG_DIR="/data/local/camera_magic"
+
+mkdir -p "$CONFIG_DIR"
+chmod 755 "$CONFIG_DIR"
+
+if [ ! -f "$CONFIG_DIR/config.txt" ]; then
+    echo "enabled=0" > "$CONFIG_DIR/config.txt"
+    echo "source_mode=file" >> "$CONFIG_DIR/config.txt"
+    echo "video_path=/data/local/camera_magic/video.mp4" >> "$CONFIG_DIR/config.txt"
+    echo "rtsp_url=" >> "$CONFIG_DIR/config.txt"
+    chmod 644 "$CONFIG_DIR/config.txt"
+fi
+
+if [ ! -f "$HOOK_LIB" ]; then
+    echo "CameraHook: ERROR - libcamera_hook.so not found" > /dev/kmsg
+    exit 1
+fi
+
+chmod 644 "$HOOK_LIB"
+
+cp "$HOOK_LIB" "$CONFIG_DIR/libcamera_hook.so"
+chmod 644 "$CONFIG_DIR/libcamera_hook.so"
+
+# Apply SELinux policy rules
+if command -v magiskpolicy >/dev/null 2>&1; then
+    magiskpolicy --live \
+        "allow hal_camera_default magisk_file file { read open execute execute_no_trans map }" \
+        "allow hal_camera_default system_data_file dir { search open read }" \
+        "allow hal_camera_default system_data_file file { read open getattr }" \
+        "allow hal_camera_default self memfd { create read write map }" \
+        "allow hal_camera_default ashmem_device chr_file { read write open ioctl map }" \
+        "allow hal_camera_default logd unix_dgram_socket { sendto write }" \
+        "allow hal_camera_default logdw sock_file { write }" \
+        "allow cameraserver magisk_file file { read open execute execute_no_trans map }" \
+        "allow cameraserver magisk_file dir { search open read }" \
+        "allow cameraserver system_data_file dir { search open read }" \
+        "allow cameraserver system_data_file file { read open getattr map }" 2>/dev/null
+    echo "CameraHook: SELinux policy applied" > /dev/kmsg
+else
+    echo "CameraHook: magiskpolicy not found, relying on sepolicy.rule" > /dev/kmsg
+fi
+
+echo "CameraHook: post-fs-data complete, hook lib ready at $CONFIG_DIR/libcamera_hook.so" > /dev/kmsg