[orbis-kernel] Impl sys_getdirentries/sys_getdents

orbis-kernel/include/orbis/file.hpp

@@ -1,6 +1,8 @@
 #pragma once
 
+#include "KernelAllocator.hpp"
 #include "error/ErrorCode.hpp"
+#include "stat.hpp"
 #include "utils/Rc.hpp"
 #include "utils/SharedMutex.hpp"
 #include <cstdint>
@@ -43,5 +45,6 @@ struct File : RcBase {
   const FileOps *ops = nullptr;
   Ref<RcBase> device;
   std::uint64_t nextOff = 0;
+  utils::kvector<Dirent> dirEntries;
 };
 } // namespace orbis

orbis-kernel/include/orbis/stat.hpp

@@ -23,4 +23,25 @@ struct Stat {
   int32_t lspare;
   timespec birthtim; // time of file creation
 };
+
+struct Dirent {
+  uint32_t fileno;
+  uint16_t reclen;
+  uint8_t type;
+  uint8_t namlen;
+  char name[256];
+};
+
+enum {
+  kDtUnknown = 0,
+  kDtFifo = 1,
+  kDtChr = 2,
+  kDtDir = 4,
+  kDtBlk = 6,
+  kDtReg = 8,
+  kDtLnk = 10,
+  kDtSock = 12,
+  kDtWht = 14,
+};
+
 } // namespace orbis