/*
- * refit/lib.c
+ * refind/lib.c
* General library functions
*
* Copyright (c) 2006-2009 Christoph Pfisterer
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
- * Modifications copyright (c) 2012-2013 Roderick W. Smith
- *
+ * Modifications copyright (c) 2012-2014 Roderick W. Smith
+ *
* Modifications distributed under the terms of the GNU General Public
* License (GPL) version 3 (GPLv3), a copy of which must be distributed
* with this source code or binaries made from it.
#include "screen.h"
#include "../include/refit_call_wrapper.h"
#include "../include/RemovableMedia.h"
-//#include "../include/UsbMass.h"
+#include "gpt.h"
#ifdef __MAKEWITH_GNUEFI
#define EfiReallocatePool ReallocatePool
#define REISERFS_SUPER_MAGIC_STRING "ReIsErFs"
#define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
#define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
+#define BTRFS_SIGNATURE "_BHRfS_M"
// variables
REFIT_VOLUME *SelfVolume = NULL;
REFIT_VOLUME **Volumes = NULL;
UINTN VolumesCount = 0;
+extern GPT_DATA *gPartitions;
// Maximum size for disk sectors
#define SECTOR_SIZE 4096
// isn't present.
VOID CleanUpPathNameSlashes(IN OUT CHAR16 *PathName) {
CHAR16 *NewName;
- UINTN i, FinalChar = 0;
+ UINTN i, Length, FinalChar = 0;
BOOLEAN LastWasSlash = FALSE;
- NewName = AllocateZeroPool(sizeof(CHAR16) * (StrLen(PathName) + 2));
+ Length = StrLen(PathName);
+ NewName = AllocateZeroPool(sizeof(CHAR16) * (Length + 2));
if (NewName != NULL) {
for (i = 0; i < StrLen(PathName); i++) {
if ((PathName[i] == L'/') || (PathName[i] == L'\\')) {
// called before running external programs to close open file handles
VOID UninitRefitLib(VOID)
{
+ // This piece of code was made to correspond to weirdness in ReinitRefitLib().
+ // See the comment on it there.
+ if(SelfRootDir == SelfVolume->RootDir)
+ SelfRootDir=0;
+
UninitVolumes();
if (SelfDir != NULL) {
return EFI_SUCCESS;
}
+//
+// EFI variable read and write functions
+//
+
+// From gummiboot: Retrieve a raw EFI variable.
+// Returns EFI status
+EFI_STATUS EfivarGetRaw(EFI_GUID *vendor, CHAR16 *name, CHAR8 **buffer, UINTN *size) {
+ CHAR8 *buf;
+ UINTN l;
+ EFI_STATUS err;
+
+ l = sizeof(CHAR16 *) * EFI_MAXIMUM_VARIABLE_SIZE;
+ buf = AllocatePool(l);
+ if (!buf)
+ return EFI_OUT_OF_RESOURCES;
+
+ err = refit_call5_wrapper(RT->GetVariable, name, vendor, NULL, &l, buf);
+ if (EFI_ERROR(err) == EFI_SUCCESS) {
+ *buffer = buf;
+ if (size)
+ *size = l;
+ } else
+ MyFreePool(buf);
+ return err;
+} // EFI_STATUS EfivarGetRaw()
+
+// From gummiboot: Set an EFI variable
+EFI_STATUS EfivarSetRaw(EFI_GUID *vendor, CHAR16 *name, CHAR8 *buf, UINTN size, BOOLEAN persistent) {
+ UINT32 flags;
+
+ flags = EFI_VARIABLE_BOOTSERVICE_ACCESS|EFI_VARIABLE_RUNTIME_ACCESS;
+ if (persistent)
+ flags |= EFI_VARIABLE_NON_VOLATILE;
+
+ return refit_call5_wrapper(RT->SetVariable, name, vendor, flags, size, buf);
+} // EFI_STATUS EfivarSetRaw()
+
//
// list functions
//
case FS_TYPE_REISERFS:
retval = L" ReiserFS";
break;
+ case FS_TYPE_BTRFS:
+ retval = L" Btrfs";
+ break;
case FS_TYPE_ISO9660:
retval = L" ISO-9660";
break;
return retval;
} // CHAR16 *FSTypeName()
-// Identify the filesystem type, if possible. Expects a Buffer containing
-// the first few (normally 4096) bytes of the filesystem, and outputs a
-// code representing the identified filesystem type.
-static UINT32 IdentifyFilesystemType(IN UINT8 *Buffer, IN UINTN BufferSize) {
- UINT32 FoundType = FS_TYPE_UNKNOWN;
+// Identify the filesystem type and record the filesystem's UUID/serial number,
+// if possible. Expects a Buffer containing the first few (normally 4096) bytes
+// of the filesystem. Sets the filesystem type code in Volume->FSType and the
+// UUID/serial number in Volume->VolUuid. Note that the UUID value is recognized
+// differently for each filesystem, and is currently supported only for
+// ext2/3/4fs and ReiserFS. If the UUID can't be determined, it's set to 0. Also, the UUID
+// is just read directly into memory; it is *NOT* valid when displayed by
+// GuidAsString() or used in other GUID/UUID-manipulating functions. (As I
+// write, it's being used merely to detect partitions that are part of a
+// RAID 1 array.)
+static VOID SetFilesystemData(IN UINT8 *Buffer, IN UINTN BufferSize, IN OUT REFIT_VOLUME *Volume) {
UINT32 *Ext2Incompat, *Ext2Compat;
UINT16 *Magic16;
char *MagicString;
- if (Buffer != NULL) {
+ if ((Buffer != NULL) && (Volume != NULL)) {
+ SetMem(&(Volume->VolUuid), sizeof(EFI_GUID), 0);
+ Volume->FSType = FS_TYPE_UNKNOWN;
if (BufferSize >= 512) {
Magic16 = (UINT16*) (Buffer + 510);
- if (*Magic16 == FAT_MAGIC)
- return FS_TYPE_FAT;
+ if (*Magic16 == FAT_MAGIC) {
+ Volume->FSType = FS_TYPE_FAT;
+ return;
+ } // if
} // search for FAT magic
if (BufferSize >= (1024 + 100)) {
Ext2Compat = (UINT32*) (Buffer + 1024 + 92);
Ext2Incompat = (UINT32*) (Buffer + 1024 + 96);
if ((*Ext2Incompat & 0x0040) || (*Ext2Incompat & 0x0200)) { // check for extents or flex_bg
- return FS_TYPE_EXT4;
+ Volume->FSType = FS_TYPE_EXT4;
} else if (*Ext2Compat & 0x0004) { // check for journal
- return FS_TYPE_EXT3;
+ Volume->FSType = FS_TYPE_EXT3;
} else { // none of these features; presume it's ext2...
- return FS_TYPE_EXT2;
+ Volume->FSType = FS_TYPE_EXT2;
}
+ CopyMem(&(Volume->VolUuid), Buffer + 1024 + 104, sizeof(EFI_GUID));
+ return;
}
} // search for ext2/3/4 magic
- if (BufferSize >= (65536 + 62)) {
+ if (BufferSize >= (65536 + 100)) {
MagicString = (char*) (Buffer + 65536 + 52);
if ((CompareMem(MagicString, REISERFS_SUPER_MAGIC_STRING, 8) == 0) ||
(CompareMem(MagicString, REISER2FS_SUPER_MAGIC_STRING, 9) == 0) ||
(CompareMem(MagicString, REISER2FS_JR_SUPER_MAGIC_STRING, 9) == 0)) {
- return FS_TYPE_REISERFS;
+ Volume->FSType = FS_TYPE_REISERFS;
+ CopyMem(&(Volume->VolUuid), Buffer + 65536 + 84, sizeof(EFI_GUID));
+ return;
} // if
} // search for ReiserFS magic
+ if (BufferSize >= (65536 + 64 + 8)) {
+ MagicString = (char*) (Buffer + 65536 + 64);
+ if (CompareMem(MagicString, BTRFS_SIGNATURE, 8) == 0) {
+ Volume->FSType = FS_TYPE_BTRFS;
+ return;
+ } // if
+ } // search for Btrfs magic
+
if (BufferSize >= (1024 + 2)) {
Magic16 = (UINT16*) (Buffer + 1024);
if ((*Magic16 == HFSPLUS_MAGIC1) || (*Magic16 == HFSPLUS_MAGIC2)) {
- return FS_TYPE_HFSPLUS;
+ Volume->FSType = FS_TYPE_HFSPLUS;
+ return;
}
} // search for HFS+ magic
} // if (Buffer != NULL)
- return FoundType;
-}
+} // UINT32 SetFilesystemData()
static VOID ScanVolumeBootcode(REFIT_VOLUME *Volume, BOOLEAN *Bootable)
{
UINT8 Buffer[SAMPLE_SIZE];
UINTN i;
MBR_PARTITION_INFO *MbrTable;
- BOOLEAN MbrTableFound;
+ BOOLEAN MbrTableFound = FALSE;
Volume->HasBootCode = FALSE;
Volume->OSIconName = NULL;
Volume->BlockIOOffset, SAMPLE_SIZE, Buffer);
if (!EFI_ERROR(Status)) {
- Volume->FSType = IdentifyFilesystemType(Buffer, SAMPLE_SIZE);
- if (*((UINT16 *)(Buffer + 510)) == 0xaa55 && Buffer[0] != 0) {
+ SetFilesystemData(Buffer, SAMPLE_SIZE, Volume);
+ if ((*((UINT16 *)(Buffer + 510)) == 0xaa55 && Buffer[0] != 0) && (FindMem(Buffer, 512, "EXFAT", 5) == -1)) {
*Bootable = TRUE;
Volume->HasBootCode = TRUE;
}
// check for MBR partition table
if (*((UINT16 *)(Buffer + 510)) == 0xaa55) {
- MbrTableFound = FALSE;
MbrTable = (MBR_PARTITION_INFO *)(Buffer + 446);
for (i = 0; i < 4; i++)
if (MbrTable[i].StartLBA && MbrTable[i].Size)
}
} /* VOID ScanVolumeBootcode() */
-// default volume badge icon based on disk kind
-static VOID ScanVolumeDefaultIcon(IN OUT REFIT_VOLUME *Volume)
+// Set default volume badge icon based on /.VolumeBadge.{icns|png} file or disk kind
+VOID SetVolumeBadgeIcon(REFIT_VOLUME *Volume)
{
- switch (Volume->DiskKind) {
- case DISK_KIND_INTERNAL:
- Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_INTERNAL);
- break;
- case DISK_KIND_EXTERNAL:
- Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_EXTERNAL);
- break;
- case DISK_KIND_OPTICAL:
- Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_OPTICAL);
- break;
- } // switch()
-}
+ if (Volume->VolBadgeImage == NULL) {
+ Volume->VolBadgeImage = egLoadIconAnyType(Volume->RootDir, L"", L".VolumeBadge", GlobalConfig.IconSizes[ICON_SIZE_BADGE]);
+ }
+
+ if (Volume->VolBadgeImage == NULL) {
+ switch (Volume->DiskKind) {
+ case DISK_KIND_INTERNAL:
+ Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_INTERNAL);
+ break;
+ case DISK_KIND_EXTERNAL:
+ Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_EXTERNAL);
+ break;
+ case DISK_KIND_OPTICAL:
+ Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_OPTICAL);
+ break;
+ case DISK_KIND_NET:
+ Volume->VolBadgeImage = BuiltinIcon(BUILTIN_ICON_VOL_NET);
+ break;
+ } // switch()
+ }
+} // VOID SetVolumeBadgeIcon()
// Return a string representing the input size in IEEE-1541 units.
// The calling function is responsible for freeing the allocated memory.
SPrint(TheValue, 255, L"%ld%s", SizeInIeee, Units);
} // if
return TheValue;
-} // CHAR16 *SizeInSIUnits()
+} // CHAR16 *SizeInIEEEUnits()
// Return a name for the volume. Ideally this should be the label for the
// filesystem it contains, but this function falls back to describing the
// this information can be extracted.
// The calling function is responsible for freeing the memory allocated
// for the name string.
-static CHAR16 *GetVolumeName(IN REFIT_VOLUME *Volume) {
- EFI_FILE_SYSTEM_INFO *FileSystemInfoPtr;
+static CHAR16 *GetVolumeName(REFIT_VOLUME *Volume) {
+ EFI_FILE_SYSTEM_INFO *FileSystemInfoPtr = NULL;
CHAR16 *FoundName = NULL;
CHAR16 *SISize, *TypeName;
- FileSystemInfoPtr = LibFileSystemInfo(Volume->RootDir);
- if (FileSystemInfoPtr != NULL) { // we have filesystem information (size, label)....
- if ((FileSystemInfoPtr->VolumeLabel != NULL) && (StrLen(FileSystemInfoPtr->VolumeLabel) > 0)) {
- FoundName = StrDuplicate(FileSystemInfoPtr->VolumeLabel);
- }
-
- // Special case: rEFInd HFS+ driver always returns label of "HFS+ volume", so wipe
- // this so that we can build a new name that includes the size....
- if ((FoundName != NULL) && (StrCmp(FoundName, L"HFS+ volume") == 0) && (Volume->FSType == FS_TYPE_HFSPLUS)) {
- MyFreePool(FoundName);
- FoundName = NULL;
- } // if rEFInd HFS+ driver suspected
-
- if (FoundName == NULL) { // filesystem has no name, so use fs type and size
- FoundName = AllocateZeroPool(sizeof(CHAR16) * 256);
- if (FoundName != NULL) {
- SISize = SizeInIEEEUnits(FileSystemInfoPtr->VolumeSize);
- SPrint(FoundName, 255, L"%s%s volume", SISize, FSTypeName(Volume->FSType));
- MyFreePool(SISize);
- } // if allocated memory OK
- } // if (FoundName == NULL)
-
- FreePool(FileSystemInfoPtr);
-
- } else { // fs driver not returning info; fall back on our own information....
+ if (Volume->RootDir != NULL) {
+ FileSystemInfoPtr = LibFileSystemInfo(Volume->RootDir);
+ }
+
+ if ((FileSystemInfoPtr != NULL) && (FileSystemInfoPtr->VolumeLabel != NULL) &&
+ (StrLen(FileSystemInfoPtr->VolumeLabel) > 0)) {
+ FoundName = StrDuplicate(FileSystemInfoPtr->VolumeLabel);
+ }
+
+ // Special case: Old versions of the rEFInd HFS+ driver always returns label of "HFS+ volume", so wipe
+ // this so that we can build a new name that includes the size....
+ if ((FoundName != NULL) && (StrCmp(FoundName, L"HFS+ volume") == 0) && (Volume->FSType == FS_TYPE_HFSPLUS)) {
+ MyFreePool(FoundName);
+ FoundName = NULL;
+ } // if rEFInd HFS+ driver suspected
+
+ // If no filesystem name, try to use the partition name....
+ if ((FoundName == NULL) && (Volume->PartName != NULL) && (StrLen(Volume->PartName) > 0) &&
+ !IsIn(Volume->PartName, IGNORE_PARTITION_NAMES)) {
+ FoundName = StrDuplicate(Volume->PartName);
+ } // if use partition name
+
+ // No filesystem or acceptable partition name, so use fs type and size
+ if ((FoundName == NULL) && (FileSystemInfoPtr != NULL)) {
+ FoundName = AllocateZeroPool(sizeof(CHAR16) * 256);
+ if (FoundName != NULL) {
+ SISize = SizeInIEEEUnits(FileSystemInfoPtr->VolumeSize);
+ SPrint(FoundName, 255, L"%s%s volume", SISize, FSTypeName(Volume->FSType));
+ MyFreePool(SISize);
+ } // if allocated memory OK
+ } // if (FoundName == NULL)
+
+ MyFreePool(FileSystemInfoPtr);
+
+ if (FoundName == NULL) {
FoundName = AllocateZeroPool(sizeof(CHAR16) * 256);
if (FoundName != NULL) {
TypeName = FSTypeName(Volume->FSType); // NOTE: Don't free TypeName; function returns constant
if (StrLen(TypeName) > 0)
- SPrint(FoundName, 255, L"%s volume", FSTypeName(Volume->FSType));
+ SPrint(FoundName, 255, L"%s volume", TypeName);
else
SPrint(FoundName, 255, L"unknown volume");
} // if allocated memory OK
// TODO: Above could be improved/extended, in case filesystem name is not found,
// such as:
- // - use partition label
// - use or add disk/partition number (e.g., "(hd0,2)")
// Desperate fallback name....
return FoundName;
} // static CHAR16 *GetVolumeName()
+// Determine the unique GUID of the volume and store it.
+static VOID SetPartGuidAndName(REFIT_VOLUME *Volume, EFI_DEVICE_PATH_PROTOCOL *DevicePath) {
+ HARDDRIVE_DEVICE_PATH *HdDevicePath;
+
+ if (Volume == NULL)
+ return;
+
+ if ((DevicePath->Type == MEDIA_DEVICE_PATH) && (DevicePath->SubType == MEDIA_HARDDRIVE_DP)) {
+ HdDevicePath = (HARDDRIVE_DEVICE_PATH*) DevicePath;
+ if (HdDevicePath->SignatureType == SIGNATURE_TYPE_GUID) {
+ Volume->PartGuid = *((EFI_GUID*) HdDevicePath->Signature);
+ Volume->PartName = PartNameFromGuid(&(Volume->PartGuid));
+ } // if
+ } // if
+} // VOID SetPartGuid()
+
VOID ScanVolume(REFIT_VOLUME *Volume)
{
EFI_STATUS Status;
while (DevicePath != NULL && !IsDevicePathEndType(DevicePath)) {
NextDevicePath = NextDevicePathNode(DevicePath);
+ if (DevicePathType(DevicePath) == MEDIA_DEVICE_PATH) {
+ SetPartGuidAndName(Volume, DevicePath);
+ }
if (DevicePathType(DevicePath) == MESSAGING_DEVICE_PATH &&
(DevicePathSubType(DevicePath) == MSG_USB_DP ||
DevicePathSubType(DevicePath) == MSG_USB_CLASS_DP ||
}
// look at the BlockIO protocol
- Status = refit_call3_wrapper(BS->HandleProtocol, WholeDiskHandle, &BlockIoProtocol, (VOID **) &Volume->WholeDiskBlockIO);
+ Status = refit_call3_wrapper(BS->HandleProtocol, WholeDiskHandle, &BlockIoProtocol,
+ (VOID **) &Volume->WholeDiskBlockIO);
if (!EFI_ERROR(Status)) {
// check the media block size
Volume->HasBootCode = FALSE;
}
- // default volume icon based on disk kind
- ScanVolumeDefaultIcon(Volume);
-
// open the root directory of the volume
Volume->RootDir = LibOpenRoot(Volume->DeviceHandle);
+
+ // Set volume icon based on .VolumeBadge icon or disk kind
+ SetVolumeBadgeIcon(Volume);
+
+ Volume->VolName = GetVolumeName(Volume);
+
if (Volume->RootDir == NULL) {
Volume->IsReadable = FALSE;
return;
Volume->IsReadable = TRUE;
}
- Volume->VolName = GetVolumeName(Volume);
-
- // get custom volume icon if present
- if (!Volume->VolBadgeImage)
- Volume->VolBadgeImage = egLoadIconAnyType(Volume->RootDir, L"", L".VolumeBadge", 32);
+ // get custom volume icons if present
if (!Volume->VolIconImage)
- Volume->VolIconImage = egLoadIconAnyType(Volume->RootDir, L"", L".VolumeIcon", 128);
+ Volume->VolIconImage = egLoadIconAnyType(Volume->RootDir, L"", L".VolumeIcon", GlobalConfig.IconSizes[ICON_SIZE_BIG]);
} // ScanVolume()
static VOID ScanExtendedPartition(REFIT_VOLUME *WholeDiskVolume, MBR_PARTITION_INFO *MbrEntry)
if (!Bootable)
Volume->HasBootCode = FALSE;
- ScanVolumeDefaultIcon(Volume);
+ SetVolumeBadgeIcon(Volume);
AddListElement((VOID ***) &Volumes, &VolumesCount, Volume);
UINTN PartitionIndex;
UINTN SectorSum, i, VolNumber = 0;
UINT8 *SectorBuffer1, *SectorBuffer2;
+ EFI_GUID *UuidList;
+ EFI_GUID NullUuid = NULL_GUID_VALUE;
MyFreePool(Volumes);
Volumes = NULL;
VolumesCount = 0;
+ ForgetPartitionTables();
// get all filesystem handles
Status = LibLocateHandle(ByProtocol, &BlockIoProtocol, NULL, &HandleCount, &Handles);
- // was: &FileSystemProtocol
+ UuidList = AllocateZeroPool(sizeof(EFI_GUID) * HandleCount);
if (Status == EFI_NOT_FOUND) {
return; // no filesystems. strange, but true...
}
for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
Volume = AllocateZeroPool(sizeof(REFIT_VOLUME));
Volume->DeviceHandle = Handles[HandleIndex];
+ AddPartitionTable(Volume);
ScanVolume(Volume);
+ if (UuidList) {
+ UuidList[HandleIndex] = Volume->VolUuid;
+ for (i = 0; i < HandleIndex; i++) {
+ if ((CompareMem(&(Volume->VolUuid), &(UuidList[i]), sizeof(EFI_GUID)) == 0) &&
+ (CompareMem(&(Volume->VolUuid), &NullUuid, sizeof(EFI_GUID)) != 0)) { // Duplicate filesystem UUID
+ Volume->IsReadable = FALSE;
+ } // if
+ } // for
+ } // if
if (Volume->IsReadable)
Volume->VolNumber = VolNumber++;
else
Volume->BlockIO != Volume->WholeDiskBlockIO) {
for (VolumeIndex2 = 0; VolumeIndex2 < VolumesCount; VolumeIndex2++) {
if (Volumes[VolumeIndex2]->BlockIO == Volume->WholeDiskBlockIO &&
- Volumes[VolumeIndex2]->BlockIOOffset == 0)
+ Volumes[VolumeIndex2]->BlockIOOffset == 0) {
WholeDiskVolume = Volumes[VolumeIndex2];
+ }
}
}
MyFreePool(SectorBuffer1);
MyFreePool(SectorBuffer2);
}
-
} // for
} /* VOID ScanVolumes() */
if (!EFI_ERROR(Status)) {
// get the BlockIO protocol
- Status = refit_call3_wrapper(BS->HandleProtocol, WholeDiskHandle, &BlockIoProtocol, (VOID **) &Volume->WholeDiskBlockIO);
+ Status = refit_call3_wrapper(BS->HandleProtocol, WholeDiskHandle, &BlockIoProtocol,
+ (VOID **) &Volume->WholeDiskBlockIO);
if (EFI_ERROR(Status)) {
Volume->WholeDiskBlockIO = NULL;
CheckError(Status, L"from HandleProtocol");
LastBackslash = i;
} // for
PathOnly = StrDuplicate(FullPath);
- PathOnly[LastBackslash] = 0;
+ if (PathOnly != NULL)
+ PathOnly[LastBackslash] = 0;
} // if
return (PathOnly);
}
+/*++
+ *
+ * Routine Description:
+ *
+ * Find a substring.
+ *
+ * Arguments:
+ *
+ * String - Null-terminated string to search.
+ * StrCharSet - Null-terminated string to search for.
+ *
+ * Returns:
+ * The address of the first occurrence of the matching substring if successful, or NULL otherwise.
+ * --*/
+CHAR16* MyStrStr (CHAR16 *String, CHAR16 *StrCharSet)
+{
+ CHAR16 *Src;
+ CHAR16 *Sub;
+
+ if ((String == NULL) || (StrCharSet == NULL))
+ return NULL;
+
+ Src = String;
+ Sub = StrCharSet;
+
+ while ((*String != L'\0') && (*StrCharSet != L'\0')) {
+ if (*String++ != *StrCharSet) {
+ String = ++Src;
+ StrCharSet = Sub;
+ } else {
+ StrCharSet++;
+ }
+ }
+ if (*StrCharSet == L'\0') {
+ return Src;
+ } else {
+ return NULL;
+ }
+} // CHAR16 *MyStrStr()
+
+// Restrict TheString to at most Limit characters.
+// Does this in two ways:
+// - Locates stretches of two or more spaces and compresses
+// them down to one space.
+// - Truncates TheString
+// Returns TRUE if changes were made, FALSE otherwise
+BOOLEAN LimitStringLength(CHAR16 *TheString, UINTN Limit) {
+ CHAR16 *SubString, *TempString;
+ UINTN i;
+ BOOLEAN HasChanged = FALSE;
+
+ // SubString will be NULL or point WITHIN TheString
+ SubString = MyStrStr(TheString, L" ");
+ while (SubString != NULL) {
+ i = 0;
+ while (SubString[i] == L' ')
+ i++;
+ if (i >= StrLen(SubString)) {
+ SubString[0] = '\0';
+ HasChanged = TRUE;
+ } else {
+ TempString = StrDuplicate(&SubString[i]);
+ if (TempString != NULL) {
+ StrCpy(&SubString[1], TempString);
+ MyFreePool(TempString);
+ HasChanged = TRUE;
+ } else {
+ // memory allocation problem; abort to avoid potentially infinite loop!
+ break;
+ } // if/else
+ } // if/else
+ SubString = MyStrStr(TheString, L" ");
+ } // while
+
+ // If the string is still too long, truncate it....
+ if (StrLen(TheString) > Limit) {
+ TheString[Limit] = '\0';
+ HasChanged = TRUE;
+ } // if
+
+ return HasChanged;
+} // BOOLEAN LimitStringLength()
+
// Takes an input loadpath, splits it into disk and filename components, finds a matching
// DeviceVolume, and returns that and the filename (*loader).
VOID FindVolumeAndFilename(IN EFI_DEVICE_PATH *loadpath, OUT REFIT_VOLUME **DeviceVolume, OUT CHAR16 **loader) {
return (FoundString);
} // CHAR16 *FindCommaDelimited()
+// Return the position of SmallString within BigString, or -1 if
+// not found.
+INTN FindSubString(IN CHAR16 *SmallString, IN CHAR16 *BigString) {
+ INTN Position = -1;
+ UINTN i = 0, SmallSize, BigSize;
+ BOOLEAN Found = FALSE;
+
+ if ((SmallString == NULL) || (BigString == NULL))
+ return -1;
+
+ SmallSize = StrLen(SmallString);
+ BigSize = StrLen(BigString);
+ if ((SmallSize > BigSize) || (SmallSize == 0) || (BigSize == 0))
+ return -1;
+
+ while ((i <= (BigSize - SmallSize) && !Found)) {
+ if (CompareMem(BigString + i, SmallString, SmallSize) == 0) {
+ Found = TRUE;
+ Position = i;
+ } // if
+ i++;
+ } // while()
+ return Position;
+} // INTN FindSubString()
+
+// Take an input path name, which may include a volume specification and/or
+// a path, and return separate volume, path, and file names. For instance,
+// "BIGVOL:\EFI\ubuntu\grubx64.efi" will return a VolName of "BIGVOL", a Path
+// of "EFI\ubuntu", and a Filename of "grubx64.efi". If an element is missing,
+// the returned pointer is NULL. The calling function is responsible for
+// freeing the allocated memory.
+VOID SplitPathName(CHAR16 *InPath, CHAR16 **VolName, CHAR16 **Path, CHAR16 **Filename) {
+ CHAR16 *Temp = NULL;
+
+ MyFreePool(*VolName);
+ MyFreePool(*Path);
+ MyFreePool(*Filename);
+ *VolName = *Path = *Filename = NULL;
+ Temp = StrDuplicate(InPath);
+ SplitVolumeAndFilename(&Temp, VolName); // VolName is NULL or has volume; Temp has rest of path
+ CleanUpPathNameSlashes(Temp);
+ *Path = FindPath(Temp); // *Path has path (may be 0-length); Temp unchanged.
+ *Filename = StrDuplicate(Temp + StrLen(*Path));
+ CleanUpPathNameSlashes(*Filename);
+ if (StrLen(*Path) == 0) {
+ MyFreePool(*Path);
+ *Path = NULL;
+ }
+ if (StrLen(*Filename) == 0) {
+ MyFreePool(*Filename);
+ *Filename = NULL;
+ }
+ MyFreePool(Temp);
+} // VOID SplitPathName
+
// Returns TRUE if SmallString is an element in the comma-delimited List,
// FALSE otherwise. Performs comparison case-insensitively (except on
// buggy EFIs with case-sensitive StriCmp() functions).
return Found;
} // BOOLEAN IsIn()
+// Returns TRUE if any element of List can be found as a substring of
+// BigString, FALSE otherwise. Performs comparisons case-insensitively.
+BOOLEAN IsInSubstring(IN CHAR16 *BigString, IN CHAR16 *List) {
+ UINTN i = 0, ElementLength;
+ BOOLEAN Found = FALSE;
+ CHAR16 *OneElement;
+
+ if (BigString && List) {
+ while (!Found && (OneElement = FindCommaDelimited(List, i++))) {
+ ElementLength = StrLen(OneElement);
+ if ((ElementLength <= StrLen(BigString)) && (StriSubCmp(OneElement, BigString)))
+ Found = TRUE;
+ } // while
+ } // if
+ return Found;
+} // BOOLEAN IsSubstringIn()
+
+// Returns TRUE if specified Volume, Directory, and Filename correspond to an
+// element in the comma-delimited List, FALSE otherwise. Note that Directory and
+// Filename must *NOT* include a volume or path specification (that's part of
+// the Volume variable), but the List elements may. Performs comparison
+// case-insensitively (except on buggy EFIs with case-sensitive StriCmp()
+// functions).
+BOOLEAN FilenameIn(REFIT_VOLUME *Volume, CHAR16 *Directory, CHAR16 *Filename, CHAR16 *List) {
+ UINTN i = 0;
+ BOOLEAN Found = FALSE;
+ CHAR16 *OneElement;
+ CHAR16 *TargetVolName = NULL, *TargetPath = NULL, *TargetFilename = NULL;
+
+ if (Filename && List) {
+ while (!Found && (OneElement = FindCommaDelimited(List, i++))) {
+ Found = TRUE;
+ SplitPathName(OneElement, &TargetVolName, &TargetPath, &TargetFilename);
+ VolumeNumberToName(Volume, &TargetVolName);
+ if (((TargetVolName != NULL) && ((Volume == NULL) || (StriCmp(TargetVolName, Volume->VolName) != 0))) ||
+ ((TargetPath != NULL) && (StriCmp(TargetPath, Directory) != 0)) ||
+ ((TargetFilename != NULL) && (StriCmp(TargetFilename, Filename) != 0))) {
+ Found = FALSE;
+ } // if
+ MyFreePool(OneElement);
+ } // while
+ } // if
+
+ MyFreePool(TargetVolName);
+ MyFreePool(TargetPath);
+ MyFreePool(TargetFilename);
+ return Found;
+} // BOOLEAN FilenameIn()
+
+// If *VolName is of the form "fs#", where "#" is a number, and if Volume points
+// to this volume number, returns with *VolName changed to the volume name, as
+// stored in the Volume data structure.
+// Returns TRUE if this substitution was made, FALSE otherwise.
+BOOLEAN VolumeNumberToName(REFIT_VOLUME *Volume, CHAR16 **VolName) {
+ BOOLEAN MadeSubstitution = FALSE;
+ UINTN VolNum;
+
+ if ((VolName == NULL) || (*VolName == NULL))
+ return FALSE;
+
+ if ((StrLen(*VolName) > 2) && (*VolName[0] == L'f') && (*VolName[1] == L's') && (*VolName[2] >= L'0') && (*VolName[2] <= L'9')) {
+ VolNum = Atoi(*VolName + 2);
+ if (VolNum == Volume->VolNumber) {
+ MyFreePool(*VolName);
+ *VolName = StrDuplicate(Volume->VolName);
+ MadeSubstitution = TRUE;
+ } // if
+ } // if
+ return MadeSubstitution;
+} // BOOLEAN VolumeMatchesNumber()
+
// Implement FreePool the way it should have been done to begin with, so that
// it doesn't throw an ASSERT message if fed a NULL pointer....
VOID MyFreePool(IN VOID *Pointer) {
return (Ejected > 0);
} // VOID EjectMedia()
+// Converts consecutive characters in the input string into a
+// number, interpreting the string as a hexadecimal number, starting
+// at the specified position and continuing for the specified number
+// of characters or until the end of the string, whichever is first.
+// NumChars must be between 1 and 16. Ignores invalid characters.
+UINT64 StrToHex(CHAR16 *Input, UINTN Pos, UINTN NumChars) {
+ UINT64 retval = 0x00;
+ UINTN NumDone = 0;
+ CHAR16 a;
+
+ if ((Input == NULL) || (StrLen(Input) < Pos) || (NumChars == 0) || (NumChars > 16)) {
+ return 0;
+ }
+
+ while ((StrLen(Input) >= Pos) && (NumDone < NumChars)) {
+ a = Input[Pos];
+ if ((a >= '0') && (a <= '9')) {
+ retval *= 0x10;
+ retval += (a - '0');
+ NumDone++;
+ }
+ if ((a >= 'a') && (a <= 'f')) {
+ retval *= 0x10;
+ retval += (a - 'a' + 0x0a);
+ NumDone++;
+ }
+ if ((a >= 'A') && (a <= 'F')) {
+ retval *= 0x10;
+ retval += (a - 'A' + 0x0a);
+ NumDone++;
+ }
+ Pos++;
+ } // while()
+ return retval;
+} // StrToHex()
+
+// Returns TRUE if UnknownString can be interpreted as a GUID, FALSE otherwise.
+// Note that the input string must have no extraneous spaces and must be
+// conventionally formatted as a 36-character GUID, complete with dashes in
+// appropriate places.
+BOOLEAN IsGuid(CHAR16 *UnknownString) {
+ UINTN Length, i;
+ BOOLEAN retval = TRUE;
+ CHAR16 a;
+
+ if (UnknownString == NULL)
+ return FALSE;
+
+ Length = StrLen(UnknownString);
+ if (Length != 36)
+ return FALSE;
+
+ for (i = 0; i < Length; i++) {
+ a = UnknownString[i];
+ if ((i == 8) || (i == 13) || (i == 18) || (i == 23)) {
+ if (a != '-')
+ retval = FALSE;
+ } else if (((a < 'a') || (a > 'f')) && ((a < 'A') || (a > 'F')) && ((a < '0') && (a > '9'))) {
+ retval = FALSE;
+ } // if/else if
+ } // for
+ return retval;
+} // BOOLEAN IsGuid()
// Return the GUID as a string, suitable for display to the user. Note that the calling
// function is responsible for freeing the allocated memory.
}
return TheString;
} // GuidAsString(EFI_GUID *GuidData)
+
+EFI_GUID StringAsGuid(CHAR16 * InString) {
+ EFI_GUID Guid = NULL_GUID_VALUE;
+
+ if (!IsGuid(InString)) {
+ return Guid;
+ }
+
+ Guid.Data1 = (UINT32) StrToHex(InString, 0, 8);
+ Guid.Data2 = (UINT16) StrToHex(InString, 9, 4);
+ Guid.Data3 = (UINT16) StrToHex(InString, 14, 4);
+ Guid.Data4[0] = (UINT8) StrToHex(InString, 19, 2);
+ Guid.Data4[1] = (UINT8) StrToHex(InString, 21, 2);
+ Guid.Data4[2] = (UINT8) StrToHex(InString, 23, 2);
+ Guid.Data4[3] = (UINT8) StrToHex(InString, 26, 2);
+ Guid.Data4[4] = (UINT8) StrToHex(InString, 28, 2);
+ Guid.Data4[5] = (UINT8) StrToHex(InString, 30, 2);
+ Guid.Data4[6] = (UINT8) StrToHex(InString, 32, 2);
+ Guid.Data4[7] = (UINT8) StrToHex(InString, 34, 2);
+
+ return Guid;
+} // EFI_GUID StringAsGuid()
+
+// Returns TRUE if the two GUIDs are equal, FALSE otherwise
+BOOLEAN GuidsAreEqual(EFI_GUID *Guid1, EFI_GUID *Guid2) {
+ return (CompareMem(Guid1, Guid2, 16) == 0);
+} // BOOLEAN CompareGuids()
+