hosfs_rpmsg: merge hostfs_rpmsg to rpmsgfs

Signed-off-by: ligd <liguiding1@xiaomi.com>

include/nuttx/fs/dirent.h

@@ -207,6 +207,17 @@ struct fs_hostfsdir_s
 };
 #endif
 
+#ifdef CONFIG_FS_RPMSGFS
+/* RPMSGFS provides mapping to directories on the host machine in the
+ * sim environment.
+ */
+
+struct fs_rpmsgfsdir_s
+{
+  FAR void *fs_dir;                           /* Opaque pointer to remote DIR */
+};
+#endif
+
 #endif /* CONFIG_DISABLE_MOUNTPOINT */
 
 struct fs_dirent_s
@@ -288,6 +299,9 @@ struct fs_dirent_s
 #ifdef CONFIG_FS_HOSTFS
       struct fs_hostfsdir_s  hostfs;
 #endif
+#ifdef CONFIG_FS_RPMSGFS
+      struct fs_rpmsgfsdir_s rpmsgfs;
+#endif
 #endif /* !CONFIG_DISABLE_MOUNTPOINT */
   } u;
 

include/nuttx/fs/rpmsgfs.h

@@ -1,5 +1,5 @@
 /****************************************************************************
- * include/nuttx/fs/hostfs_rpmsg.h
+ * include/nuttx/fs/rpmsgfs.h
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -33,12 +33,8 @@ extern "C"
 #define EXTERN extern
 #endif
 
-#ifdef CONFIG_FS_HOSTFS_RPMSG
-int hostfs_rpmsg_init(FAR const char *cpu_name);
-#endif
-
-#ifdef CONFIG_FS_HOSTFS_RPMSG_SERVER
-int hostfs_rpmsg_server_init(void);
+#ifdef CONFIG_FS_RPMSGFS
+int rpmsgfs_server_init(void);
 #endif
 
 #undef EXTERN

include/sys/statfs.h

@@ -93,6 +93,7 @@
 #define HOSTFS_MAGIC          0x54534f48
 #define USERFS_MAGIC          0x52455355
 #define CROMFS_MAGIC          0x4d4f5243
+#define RPMSGFS_MAGIC         0x54534f47
 
 #if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
 #  define statfs64            statfs