devctl commands for getting device info

share/sysdefs/devctl.h

@@ -2,6 +2,8 @@
 #define SHARE_SYSDEFS_DEVCTL_H_
 
 #define DEVCTL_GET_HANDLE 100
+#define DEVCTL_DEVLS_SZ   101
+#define DEVCTL_DEVLS_STAT 102
 
 #define DEV_TERMDEV_PUTCH 0
 
@@ -25,6 +27,12 @@ typedef struct {
   uint8_t fontw, fonth;
 } FbDevGetInfo;
 
+typedef struct {
+  bool present;
+  char name[0x100];
+  size_t nfns;
+} DevStat;
+
 #endif
 
 #endif // SHARE_SYSDEFS_DEVCTL_H_