diff --git a/starboard/common/file.cc b/starboard/common/file.cc
index 4ce81e6c2871..c0b59d5e08e0 100644
--- a/starboard/common/file.cc
+++ b/starboard/common/file.cc
@@ -86,11 +86,9 @@ bool SbFileDeleteRecursive(const char* path, bool preserve_root) {
 
   // The |path| points to a file. Remove it and return.
   if (err != kSbFileOk) {
-    return SbFileDelete(path);
+    return (unlink(path) == 0);
   }
 
-  SbFileInfo info;
-
   std::vector<char> entry(kSbFileMaxName);
 
   while (SbDirectoryGetNext(dir, entry.data(), kSbFileMaxName)) {
@@ -110,7 +108,7 @@ bool SbFileDeleteRecursive(const char* path, bool preserve_root) {
 
   // Don't forget to close and remove the directory before returning!
   if (DirectoryCloseLogFailure(path, dir)) {
-    return preserve_root ? true : SbFileDelete(path);
+    return preserve_root ? true : (rmdir(path) == 0);
   }
   return false;
 }
diff --git a/starboard/common/file.h b/starboard/common/file.h
index d9c1bbc0ef73..baf291d7b820 100644
--- a/starboard/common/file.h
+++ b/starboard/common/file.h
@@ -47,63 +47,52 @@ bool SbFileDeleteRecursive(const char* path, bool preserve_root);
 // functions call the corresponding SbFile function.
 class ScopedFile {
  public:
-  ScopedFile(const char* path,
-             int flags,
-             bool* out_created,
-             SbFileError* out_error)
-      : file_(kSbFileInvalid) {
-    file_ = SbFileOpen(path, flags, out_created, out_error);
+  ScopedFile(const char* path, int flags, int mode) : file_(-1) {
+    file_ = open(path, flags, mode);
   }
 
-  ScopedFile(const char* path, int flags, bool* out_created)
-      : file_(kSbFileInvalid) {
-    file_ = SbFileOpen(path, flags, out_created, NULL);
+  ScopedFile(const char* path, int flags) : file_(-1) {
+    file_ = SbFileOpen(path, flags);
   }
 
-  ScopedFile(const char* path, int flags) : file_(kSbFileInvalid) {
-    file_ = SbFileOpen(path, flags, NULL, NULL);
-  }
-
-  ~ScopedFile() { SbFileClose(file_); }
+  ~ScopedFile() { close(file_); }
 
-  SbFile file() const { return file_; }
+  int file() const { return file_; }
 
-  bool IsValid() const { return SbFileIsValid(file_); }
+  bool IsValid() const { return (file_ >= 0); }
 
-  int64_t Seek(SbFileWhence whence, int64_t offset) const {
-    return SbFileSeek(file_, whence, offset);
+  off_t Seek(int whence, off_t offset) const {
+    return lseek(file_, offset, whence);
   }
 
-  int Read(char* data, int size) const { return SbFileRead(file_, data, size); }
-
-  int ReadAll(char* data, int size) const {
-    return SbFileReadAll(file_, data, size);
+  ssize_t Read(void* data, size_t size) const {
+    return read(file_, data, size);
   }
 
-  int Write(const char* data, int size) const {
-    int result = SbFileWrite(file_, data, size);
+  int ReadAll(char* data, int size) const { return ReadAll(file_, data, size); }
+
+  ssize_t Write(const void* data, size_t size) const {
+    ssize_t result = write(file_, data, size);
     RecordFileWriteStat(result);
     return result;
   }
 
-  int WriteAll(const char* data, int size) const {
-    int result = SbFileWriteAll(file_, data, size);
+  ssize_t WriteAll(const void* data, size_t size) const {
+    ssize_t result = WriteAll(file_, data, size);
     RecordFileWriteStat(result);
     return result;
   }
 
-  bool Truncate(int64_t length) const { return SbFileTruncate(file_, length); }
+  int Truncate(off_t length) const { return ftruncate(file_, length); }
 
-  bool Flush() const { return SbFileFlush(file_); }
+  int Flush() const { return fsync(file_); }
 
-  bool GetInfo(SbFileInfo* out_info) const {
-    return SbFileGetInfo(file_, out_info);
-  }
+  int GetInfo(struct stat* out_info) const { return fstat(file_, out_info); }
 
   int64_t GetSize() const {
-    SbFileInfo file_info;
-    bool success = GetInfo(&file_info);
-    return (success ? file_info.size : -1);
+    struct stat file_info;
+    int success = GetInfo(&file_info);
+    return (success == 0 ? file_info.st_size : -1);
   }
 
   // disallow copy and move operations
@@ -111,7 +100,7 @@ class ScopedFile {
   ScopedFile& operator=(const ScopedFile&) = delete;
 
  private:
-  SbFile file_;
+  int file_;
 };
 
 }  // namespace starboard
diff --git a/starboard/loader_app/drain_file.cc b/starboard/loader_app/drain_file.cc
index 2b47e4fce7fd..6faf48748a90 100644
--- a/starboard/loader_app/drain_file.cc
+++ b/starboard/loader_app/drain_file.cc
@@ -165,7 +165,7 @@ bool TryDrain(const char* dir, const char* app_key) {
   path.append(filename);
 
   SbFileError error = kSbFileOk;
-  int file = open(path.c_str(), O_CREAT | O_WRONLY);
+  int file = open(path.c_str(), O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
 
   SB_DCHECK(file >= 0);
   SB_DCHECK(close(file));