From: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 7 May 2010 16:45:48 +0000 (+0000)
Subject: Fix svn check in bug that broke CWD. Update the connect disconnect support in device... 
X-Git-Tag: edk2-stable201903~15881
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=208a8330d0029d4025f6f27f182d627bd9d7b38b

Fix svn check in bug that broke CWD. Update the connect disconnect support in device command to minimize operations.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10462 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/EmbeddedPkg/Ebl/EfiDevice.c b/EmbeddedPkg/Ebl/EfiDevice.c
index 70ba70383c..80dcfcb5cc 100644
--- a/EmbeddedPkg/Ebl/EfiDevice.c
+++ b/EmbeddedPkg/Ebl/EfiDevice.c
@@ -207,13 +207,14 @@ EblDeviceCmd (
   IN CHAR8  **Argv
   )
 {
+  EFI_STATUS    Status;
   UINTN         Index;
   UINTN         CurrentRow;
   UINTN         Max;
   EFI_OPEN_FILE *File;
 
   CurrentRow = 0;
-  
+
   // Need to call here to make sure Device Counts are valid
   EblUpdateDeviceLists ();
 
@@ -227,9 +228,15 @@ EblDeviceCmd (
       if (File != NULL) {
         if (File->FsBlockIoMedia->RemovableMedia) {
           if (File->FsBlockIoMedia->MediaPresent) {
-            gBS->DisconnectController (File->EfiHandle, NULL, NULL);
+            // Probe to see if media is present
+            Status = File->FsBlockIo->ReadBlocks (File->FsBlockIo, File->FsBlockIo->Media->MediaId, (EFI_LBA)0, 0, NULL);
+            if (Status == EFI_NO_MEDIA) {
+              gBS->DisconnectController (File->EfiHandle, NULL, NULL);
+            }
+          } else {
+            // Probe for media insertion and connect partition and filesystem drivers if needed
+            gBS->ConnectController (File->EfiHandle, NULL, NULL, TRUE);
           }
-          gBS->ConnectController (File->EfiHandle, NULL, NULL, TRUE);
         }
         EfiClose (File);
       }
diff --git a/EmbeddedPkg/Include/Library/EfiFileLib.h b/EmbeddedPkg/Include/Library/EfiFileLib.h
index 9d98b19000..9ec5246358 100644
--- a/EmbeddedPkg/Include/Library/EfiFileLib.h
+++ b/EmbeddedPkg/Include/Library/EfiFileLib.h
@@ -94,6 +94,7 @@ typedef struct {
   EFI_FILE_SYSTEM_INFO          *FsInfo;
   EFI_FILE_INFO                 *FsFileInfo;
   EFI_BLOCK_IO_MEDIA            *FsBlockIoMedia;  // Information valid for Fs#: or B#:
+  EFI_BLOCK_IO_PROTOCOL         *FsBlockIo;       // Information valid for Fs#: or B#:
 
   UINTN                         DiskOffset;       // Information valid for B#:
 
diff --git a/EmbeddedPkg/Library/EfiFileLib/EfiFileLib.c b/EmbeddedPkg/Library/EfiFileLib/EfiFileLib.c
index 1db7d7d035..c93304d537 100644
--- a/EmbeddedPkg/Library/EfiFileLib/EfiFileLib.c
+++ b/EmbeddedPkg/Library/EfiFileLib/EfiFileLib.c
@@ -409,6 +409,7 @@ EblFileDevicePath (
   Status = gBS->HandleProtocol (File->EfiHandle, &gEfiBlockIoProtocolGuid, (VOID **)&BlkIo);
   if (!EFI_ERROR (Status)) {
     File->FsBlockIoMedia = BlkIo->Media;
+    File->FsBlockIo = BlkIo;
 
     // If we are not opening the device this will get over written with file info
     File->MaxPosition = MultU64x32 (BlkIo->Media->LastBlock + 1, BlkIo->Media->BlockSize);
@@ -1732,6 +1733,15 @@ EfiSetCwd (
     return EFI_INVALID_PARAMETER;
   }
 
+  AsciiStrCpy (gCwd, File->DeviceName);
+  if (File->FileName == NULL) {
+    AsciiStrCat (gCwd, ":\\");
+  } else {
+    AsciiStrCat (gCwd, ":");
+    AsciiStrCat (gCwd, File->FileName);
+  }
+
+
   EfiClose (File);
   if (Path != Cwd) {
     FreePool (Path);