Changeset 66698 in vbox for trunk/src/VBox/Runtime

Timestamp:

Apr 27, 2017 3:48:29 PM (8 years ago)

Author:

vboxsync

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

115091

Message:

fatvfs: readonly check and build fix

File:

• trunk/src/VBox/Runtime/common/filesystem/fatvfs.cpp (modified) (5 diffs)

trunk/src/VBox/Runtime/common/filesystem/fatvfs.cpp

@@ -1749 +1749 @@
 {
     PRTFSFATFILE pThis = (PRTFSFATFILE)pvThis;
+    PRTFSFATVOL  pVol  = pThis->Core.pVol;
     AssertReturn(pSgBuf->cSegs != 0, VERR_INTERNAL_ERROR_3);
     RT_NOREF(fBlocking);
+
+    if (pVol->fReadOnly)
+        return VERR_WRITE_PROTECT;
 
     if (off == -1)
@@ -1790 +1794 @@
 
         /* Figure the disk offset. */
-        uint64_t offDisk = rtFsFatChain_FileOffsetToDiskOff(&pThis->Core.Clusters, (uint32_t)off, pThis->Core.pVol);
+        uint64_t offDisk = rtFsFatChain_FileOffsetToDiskOff(&pThis->Core.Clusters, (uint32_t)off, pVol);
         if (offDisk != UINT64_MAX)
         {
-            rc = RTVfsFileWriteAt(pThis->Core.pVol->hVfsBacking, offDisk, pbSrc, cbToWrite, NULL);
+            rc = RTVfsFileWriteAt(pVol->hVfsBacking, offDisk, pbSrc, cbToWrite, NULL);
             if (RT_SUCCESS(rc))
             {
@@ -2650 +2654 @@
                                         uint32_t *poffEntryInDir, uint32_t *pcFreeTail)
 {
+    /* First try make gcc happy. */
+    *pcFreeTail     = 0;
+    *poffEntryInDir = UINT32_MAX;
+
+    /*
+     * Scan the whole directory, buffer by buffer.
+     */
     uint32_t            offStartFreeEntries = UINT32_MAX;
     uint32_t            cFreeEntries        = 0;
@@ -2713 +2724 @@
         rtFsFatDir_ReleaseBufferAfterReading(pThis, uBufferLock);
     }
-
-    *pcFreeTail     = cFreeEntries;
-    *poffEntryInDir = UINT32_MAX;
+    *pcFreeTail = cFreeEntries;
     return VERR_DISK_FULL;
 }
@@ -2849 +2858 @@
     PRTFSFATVOL pVol = pThis->Core.pVol;
     *poffEntryInDir = UINT32_MAX;
+    if (pVol->fReadOnly)
+        return VERR_WRITE_PROTECT;
 
     /*