Changeset 96124 in vbox for trunk/src/VBox/Runtime/r3/win

Timestamp:

Aug 8, 2022 11:14:54 PM (2 years ago)

Author:

vboxsync

Message:

IPRT: Added a RTFileDup API, only implemented on windows for now as I to tired to bother with dynamically checking for dup3 support. bugref:10261

File:

• trunk/src/VBox/Runtime/r3/win/fileio-win.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/r3/win/fileio-win.cpp

@@ -406 +406 @@
 
 
+RTDECL(int)  RTFileDup(RTFILE hFileSrc, uint64_t fFlags, PRTFILE phFileNew)
+{
+    /*
+     * Validate input.
+     */
+    AssertPtrReturn(phFileNew, VERR_INVALID_POINTER);
+    *phFileNew = NIL_RTFILE;
+    AssertPtrReturn(phFileNew, VERR_INVALID_POINTER);
+    AssertReturn(!(fFlags & ~(uint64_t)RTFILE_O_INHERIT), VERR_INVALID_FLAGS);
+
+    /*
+     * Do the job.
+     */
+    HANDLE hNew = INVALID_HANDLE_VALUE;
+    if (DuplicateHandle(GetCurrentProcess(), (HANDLE)RTFileToNative(hFileSrc),
+                        GetCurrentProcess(), &hNew, 0, RT_BOOL(fFlags & RTFILE_O_INHERIT), DUPLICATE_SAME_ACCESS))
+    {
+        *phFileNew = (RTFILE)hNew;
+        return VINF_SUCCESS;
+    }
+    return RTErrConvertFromWin32(GetLastError());
+}
+
+
 RTR3DECL(int)  RTFileClose(RTFILE hFile)
 {