[DFS/FEATURE] Support ISO9660

1. Not support link.
2. Fixup the DFS open flag with readonly.

Link: #9270

Signed-off-by: GuEe-GUI <[email protected]>

Author: GuEe-GUI

components/dfs/Kconfig

@@ -162,6 +162,13 @@ endif
         bool "Using devfs for device objects"
         default y
 
+if RT_USING_DFS_V1
+    config RT_USING_DFS_ISO9660
+        bool "Using ISO9660 filesystem"
+        depends on RT_USING_MEMHEAP
+        default n
+endif
+
     config RT_USING_DFS_ROMFS
         bool "Enable ReadOnly file system on flash"
         default n

components/dfs/dfs_v1/filesystems/iso9660/SConscript

@@ -0,0 +1,11 @@
+# RT-Thread building script for component
+
+from building import *
+
+cwd = GetCurrentDir()
+src = Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('Filesystem', src, depend = ['RT_USING_DFS', 'RT_USING_DFS_ISO9660'], CPPPATH = CPPPATH)
+
+Return('group')