硬盘支持（FAT32）

2026-04-24 11:14:01 +00:00 · 2026-04-22 21:43:09 +08:00
parent 6b5a19a19d
commit 0fe34d9a09
22 changed files with 2768 additions and 18 deletions
--- a/cmake/ensure_disk_image.cmake
+++ b/cmake/ensure_disk_image.cmake
@@ -0,0 +1,72 @@
+if(NOT DEFINED DISK_IMAGE OR "${DISK_IMAGE}" STREQUAL "")
+    message(FATAL_ERROR "ensure_disk_image: DISK_IMAGE is required")
+endif()
+
+if(NOT DEFINED DISK_MB OR "${DISK_MB}" STREQUAL "")
+    set(DISK_MB 64)
+endif()
+
+math(EXPR _disk_mb_int "${DISK_MB} + 0")
+if(_disk_mb_int LESS 4)
+    set(_disk_mb_int 4)
+endif()
+
+math(EXPR _disk_bytes "${_disk_mb_int} * 1024 * 1024")
+get_filename_component(_disk_dir "${DISK_IMAGE}" DIRECTORY)
+if(NOT EXISTS "${_disk_dir}")
+    file(MAKE_DIRECTORY "${_disk_dir}")
+endif()
+
+set(_need_create TRUE)
+if(EXISTS "${DISK_IMAGE}")
+    file(SIZE "${DISK_IMAGE}" _disk_size_now)
+    if(_disk_size_now GREATER_EQUAL _disk_bytes)
+        set(_need_create FALSE)
+    endif()
+endif()
+
+if(_need_create)
+    find_program(_python_exec NAMES python3 python py)
+    if(_python_exec)
+        execute_process(
+            COMMAND "${_python_exec}" "-c" "import os,sys; p=sys.argv[1]; sz=int(sys.argv[2]); d=os.path.dirname(p); d and os.makedirs(d, exist_ok=True); f=open(p,'ab'); f.truncate(sz); f.close()"
+                "${DISK_IMAGE}" "${_disk_bytes}"
+            RESULT_VARIABLE _python_result
+            OUTPUT_QUIET
+            ERROR_QUIET
+        )
+        if(_python_result EQUAL 0)
+            set(_need_create FALSE)
+        endif()
+    endif()
+endif()
+
+if(_need_create)
+    find_program(_dd_exec NAMES dd)
+    if(_dd_exec)
+        execute_process(
+            COMMAND "${_dd_exec}" "if=/dev/zero" "of=${DISK_IMAGE}" "bs=1M" "count=${_disk_mb_int}"
+            RESULT_VARIABLE _dd_result
+            OUTPUT_QUIET
+            ERROR_QUIET
+        )
+        if(_dd_result EQUAL 0)
+            set(_need_create FALSE)
+        endif()
+    endif()
+endif()
+
+if(_need_create)
+    message(FATAL_ERROR "ensure_disk_image: failed to create disk image '${DISK_IMAGE}' (${_disk_mb_int}MB)")
+endif()
+
+if(NOT EXISTS "${DISK_IMAGE}")
+    message(FATAL_ERROR "ensure_disk_image: disk image missing after create '${DISK_IMAGE}'")
+endif()
+
+file(SIZE "${DISK_IMAGE}" _disk_size_final)
+if(_disk_size_final LESS _disk_bytes)
+    message(FATAL_ERROR "ensure_disk_image: disk image too small (${_disk_size_final} bytes), expected >= ${_disk_bytes}")
+endif()
+
+message(STATUS "ensure_disk_image: ready '${DISK_IMAGE}' (${_disk_size_final} bytes)")