Changeset 83534 in vbox for trunk/src

Timestamp:

Apr 3, 2020 3:41:58 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

136853

Message:

Guest Control/VBoxService: Strip truncation bit in vgsvcGstCtrlSessionHandleFileOpen() when opening in read-only mode. bugref:9320

File:

• trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlSession.cpp (modified) (1 diff)

trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlSession.cpp

@@ -322 +322 @@
                 {
                     fFlags |= (uCreationMode << RTFILE_O_CREATE_MODE_SHIFT) & RTFILE_O_CREATE_MODE_MASK;
+                    /* If we're opening a file in read-only mode, strip truncation mode.
+                     * rtFileRecalcAndValidateFlags() will validate it anyway, but avoid asserting in debug builds. */
+                    if (fFlags & RTFILE_O_READ) 
+                        fFlags &= ~RTFILE_O_TRUNCATE;
                     rc = RTFileOpen(&pFile->hFile, pFile->szName, fFlags);
                     if (RT_SUCCESS(rc))