8af6a2c64e
Paper over a coverity issue: *** CID 1372592: API usage errors (BAD_COMPARE) /lib/libefivar/efivar-dp-parse.c: 2723 in DevPathFromTextiSCSI() Truncating the result of "strcmp" to "unsigned short" may cause it to be misinterpreted as 0. Note that "strcmp" may return an integer besides -1, 0, or 1. We do this by making StrCmp return either 0 or 1 for equal or not-equal. There's a bug in the DevPathFromTextiSCSI cast of the return value and this workaround will fix it without breaking other users of StrCmp (all of which test for == 0). https://bugzilla.tianocore.org/show_bug.cgi?id=440 has been filed upstream to log this issue. CID: 1372592 Sponsored by: Netflix
636 lines
22 KiB
C
636 lines
22 KiB
C
/*-
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* Copyright (c) 2017 Netflix, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Taken from MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.h
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* hash a11928f3310518ab1c6fd34e8d0fdbb72de9602c 2017-Mar-01
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*/
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/** @file
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Definition for Device Path library.
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Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _UEFI_DEVICE_PATH_LIB_H_
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#define _UEFI_DEVICE_PATH_LIB_H_
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#include <Uefi.h>
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#include <Protocol/DevicePathUtilities.h>
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#include <Protocol/DebugPort.h>
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#include <Protocol/DevicePathToText.h>
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#include <Protocol/DevicePathFromText.h>
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#include <Guid/PcAnsi.h>
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#include <Library/DebugLib.h>
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#include <Library/PrintLib.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/PcdLib.h>
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#include <IndustryStandard/Bluetooth.h>
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#define IS_COMMA(a) ((a) == ',')
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#define IS_HYPHEN(a) ((a) == '-')
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#define IS_DOT(a) ((a) == '.')
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#define IS_LEFT_PARENTH(a) ((a) == '(')
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#define IS_RIGHT_PARENTH(a) ((a) == ')')
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#define IS_SLASH(a) ((a) == '/')
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#define IS_NULL(a) ((a) == '\0')
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//
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// Private Data structure
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//
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typedef struct {
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char *Str;
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UINTN Count;
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UINTN Capacity;
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} POOL_PRINT;
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typedef
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EFI_DEVICE_PATH_PROTOCOL *
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(*DEVICE_PATH_FROM_TEXT) (
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IN char *Str
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);
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typedef
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VOID
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(*DEVICE_PATH_TO_TEXT) (
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IN OUT POOL_PRINT *Str,
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IN VOID *DevicePath,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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);
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typedef struct {
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UINT8 Type;
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UINT8 SubType;
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DEVICE_PATH_TO_TEXT Function;
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} DEVICE_PATH_TO_TEXT_TABLE;
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typedef struct {
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UINT8 Type;
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const char *Text;
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} DEVICE_PATH_TO_TEXT_GENERIC_TABLE;
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typedef struct {
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const char *DevicePathNodeText;
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DEVICE_PATH_FROM_TEXT Function;
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} DEVICE_PATH_FROM_TEXT_TABLE;
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typedef struct {
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BOOLEAN ClassExist;
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UINT8 Class;
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BOOLEAN SubClassExist;
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UINT8 SubClass;
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} USB_CLASS_TEXT;
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#define USB_CLASS_AUDIO 1
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#define USB_CLASS_CDCCONTROL 2
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#define USB_CLASS_HID 3
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#define USB_CLASS_IMAGE 6
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#define USB_CLASS_PRINTER 7
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#define USB_CLASS_MASS_STORAGE 8
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#define USB_CLASS_HUB 9
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#define USB_CLASS_CDCDATA 10
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#define USB_CLASS_SMART_CARD 11
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#define USB_CLASS_VIDEO 14
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#define USB_CLASS_DIAGNOSTIC 220
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#define USB_CLASS_WIRELESS 224
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#define USB_CLASS_RESERVE 254
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#define USB_SUBCLASS_FW_UPDATE 1
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#define USB_SUBCLASS_IRDA_BRIDGE 2
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#define USB_SUBCLASS_TEST 3
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#define RFC_1700_UDP_PROTOCOL 17
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#define RFC_1700_TCP_PROTOCOL 6
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#pragma pack(1)
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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EFI_GUID Guid;
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UINT8 VendorDefinedData[1];
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} VENDOR_DEFINED_HARDWARE_DEVICE_PATH;
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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EFI_GUID Guid;
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UINT8 VendorDefinedData[1];
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} VENDOR_DEFINED_MESSAGING_DEVICE_PATH;
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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EFI_GUID Guid;
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UINT8 VendorDefinedData[1];
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} VENDOR_DEFINED_MEDIA_DEVICE_PATH;
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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UINT32 Hid;
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UINT32 Uid;
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UINT32 Cid;
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CHAR8 HidUidCidStr[3];
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} ACPI_EXTENDED_HID_DEVICE_PATH_WITH_STR;
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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UINT16 NetworkProtocol;
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UINT16 LoginOption;
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UINT64 Lun;
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UINT16 TargetPortalGroupTag;
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CHAR8 TargetName[1];
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} ISCSI_DEVICE_PATH_WITH_NAME;
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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EFI_GUID Guid;
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UINT8 VendorDefinedData[1];
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} VENDOR_DEVICE_PATH_WITH_DATA;
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#pragma pack()
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#ifdef FreeBSD /* Remove these on FreeBSD */
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/**
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Returns the size of a device path in bytes.
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This function returns the size, in bytes, of the device path data structure
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specified by DevicePath including the end of device path node.
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If DevicePath is NULL or invalid, then 0 is returned.
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@param DevicePath A pointer to a device path data structure.
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@retval 0 If DevicePath is NULL or invalid.
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@retval Others The size of a device path in bytes.
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**/
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UINTN
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EFIAPI
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UefiDevicePathLibGetDevicePathSize (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
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);
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/**
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Creates a new copy of an existing device path.
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This function allocates space for a new copy of the device path specified by DevicePath.
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If DevicePath is NULL, then NULL is returned. If the memory is successfully
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allocated, then the contents of DevicePath are copied to the newly allocated
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buffer, and a pointer to that buffer is returned. Otherwise, NULL is returned.
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The memory for the new device path is allocated from EFI boot services memory.
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It is the responsibility of the caller to free the memory allocated.
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@param DevicePath A pointer to a device path data structure.
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@retval NULL DevicePath is NULL or invalid.
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@retval Others A pointer to the duplicated device path.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibDuplicateDevicePath (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
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);
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/**
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Creates a new device path by appending a second device path to a first device path.
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This function creates a new device path by appending a copy of SecondDevicePath
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to a copy of FirstDevicePath in a newly allocated buffer. Only the end-of-device-path
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device node from SecondDevicePath is retained. The newly created device path is
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returned. If FirstDevicePath is NULL, then it is ignored, and a duplicate of
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SecondDevicePath is returned. If SecondDevicePath is NULL, then it is ignored,
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and a duplicate of FirstDevicePath is returned. If both FirstDevicePath and
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SecondDevicePath are NULL, then a copy of an end-of-device-path is returned.
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If there is not enough memory for the newly allocated buffer, then NULL is returned.
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The memory for the new device path is allocated from EFI boot services memory.
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It is the responsibility of the caller to free the memory allocated.
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@param FirstDevicePath A pointer to a device path data structure.
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@param SecondDevicePath A pointer to a device path data structure.
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@retval NULL If there is not enough memory for the newly allocated buffer.
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@retval NULL If FirstDevicePath or SecondDevicePath is invalid.
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@retval Others A pointer to the new device path if success.
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Or a copy an end-of-device-path if both FirstDevicePath and SecondDevicePath are NULL.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibAppendDevicePath (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath, OPTIONAL
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IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath OPTIONAL
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);
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/**
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Creates a new path by appending the device node to the device path.
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This function creates a new device path by appending a copy of the device node
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specified by DevicePathNode to a copy of the device path specified by DevicePath
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in an allocated buffer. The end-of-device-path device node is moved after the
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end of the appended device node.
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If DevicePathNode is NULL then a copy of DevicePath is returned.
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If DevicePath is NULL then a copy of DevicePathNode, followed by an end-of-device
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path device node is returned.
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If both DevicePathNode and DevicePath are NULL then a copy of an end-of-device-path
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device node is returned.
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If there is not enough memory to allocate space for the new device path, then
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NULL is returned.
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The memory is allocated from EFI boot services memory. It is the responsibility
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of the caller to free the memory allocated.
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@param DevicePath A pointer to a device path data structure.
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@param DevicePathNode A pointer to a single device path node.
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@retval NULL If there is not enough memory for the new device path.
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@retval Others A pointer to the new device path if success.
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A copy of DevicePathNode followed by an end-of-device-path node
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if both FirstDevicePath and SecondDevicePath are NULL.
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A copy of an end-of-device-path node if both FirstDevicePath
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and SecondDevicePath are NULL.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibAppendDevicePathNode (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathNode OPTIONAL
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);
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/**
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Creates a new device path by appending the specified device path instance to the specified device
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path.
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This function creates a new device path by appending a copy of the device path
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instance specified by DevicePathInstance to a copy of the device path specified
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by DevicePath in a allocated buffer.
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The end-of-device-path device node is moved after the end of the appended device
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path instance and a new end-of-device-path-instance node is inserted between.
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If DevicePath is NULL, then a copy if DevicePathInstance is returned.
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If DevicePathInstance is NULL, then NULL is returned.
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If DevicePath or DevicePathInstance is invalid, then NULL is returned.
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If there is not enough memory to allocate space for the new device path, then
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NULL is returned.
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The memory is allocated from EFI boot services memory. It is the responsibility
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of the caller to free the memory allocated.
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@param DevicePath A pointer to a device path data structure.
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@param DevicePathInstance A pointer to a device path instance.
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@return A pointer to the new device path.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibAppendDevicePathInstance (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance OPTIONAL
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);
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/**
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Creates a copy of the current device path instance and returns a pointer to the next device path
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instance.
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This function creates a copy of the current device path instance. It also updates
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DevicePath to point to the next device path instance in the device path (or NULL
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if no more) and updates Size to hold the size of the device path instance copy.
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If DevicePath is NULL, then NULL is returned.
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If DevicePath points to a invalid device path, then NULL is returned.
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If there is not enough memory to allocate space for the new device path, then
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NULL is returned.
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The memory is allocated from EFI boot services memory. It is the responsibility
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of the caller to free the memory allocated.
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If Size is NULL, then ASSERT().
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@param DevicePath On input, this holds the pointer to the current
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device path instance. On output, this holds
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the pointer to the next device path instance
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or NULL if there are no more device path
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instances in the device path pointer to a
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device path data structure.
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@param Size On output, this holds the size of the device
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path instance, in bytes or zero, if DevicePath
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is NULL.
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@return A pointer to the current device path instance.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibGetNextDevicePathInstance (
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IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
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OUT UINTN *Size
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);
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/**
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Creates a device node.
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This function creates a new device node in a newly allocated buffer of size
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NodeLength and initializes the device path node header with NodeType and NodeSubType.
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The new device path node is returned.
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If NodeLength is smaller than a device path header, then NULL is returned.
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If there is not enough memory to allocate space for the new device path, then
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NULL is returned.
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The memory is allocated from EFI boot services memory. It is the responsibility
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of the caller to free the memory allocated.
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@param NodeType The device node type for the new device node.
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@param NodeSubType The device node sub-type for the new device node.
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@param NodeLength The length of the new device node.
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@return The new device path.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibCreateDeviceNode (
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IN UINT8 NodeType,
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IN UINT8 NodeSubType,
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IN UINT16 NodeLength
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);
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/**
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Determines if a device path is single or multi-instance.
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This function returns TRUE if the device path specified by DevicePath is
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multi-instance.
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Otherwise, FALSE is returned.
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If DevicePath is NULL or invalid, then FALSE is returned.
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@param DevicePath A pointer to a device path data structure.
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@retval TRUE DevicePath is multi-instance.
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@retval FALSE DevicePath is not multi-instance, or DevicePath
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is NULL or invalid.
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**/
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BOOLEAN
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EFIAPI
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UefiDevicePathLibIsDevicePathMultiInstance (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
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);
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/**
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Converts a device path to its text representation.
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@param DevicePath A Pointer to the device to be converted.
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@param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation
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of the display node is used, where applicable. If DisplayOnly
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is FALSE, then the longer text representation of the display node
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is used.
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@param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text
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representation for a device node can be used, where applicable.
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@return A pointer to the allocated text representation of the device path or
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NULL if DeviceNode is NULL or there was insufficient memory.
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**/
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CHAR16 *
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EFIAPI
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UefiDevicePathLibConvertDevicePathToText (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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);
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/**
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Converts a device node to its string representation.
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@param DeviceNode A Pointer to the device node to be converted.
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@param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation
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of the display node is used, where applicable. If DisplayOnly
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is FALSE, then the longer text representation of the display node
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is used.
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@param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text
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representation for a device node can be used, where applicable.
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@return A pointer to the allocated text representation of the device node or NULL if DeviceNode
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is NULL or there was insufficient memory.
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**/
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CHAR16 *
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EFIAPI
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UefiDevicePathLibConvertDeviceNodeToText (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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);
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/**
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Convert text to the binary representation of a device node.
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@param TextDeviceNode TextDeviceNode points to the text representation of a device
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node. Conversion starts with the first character and continues
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until the first non-device node character.
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@return A pointer to the EFI device node or NULL if TextDeviceNode is NULL or there was
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insufficient memory or text unsupported.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibConvertTextToDeviceNode (
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IN CONST CHAR16 *TextDeviceNode
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);
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/**
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Convert text to the binary representation of a device path.
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@param TextDevicePath TextDevicePath points to the text representation of a device
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path. Conversion starts with the first character and continues
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until the first non-device node character.
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@return A pointer to the allocated device path or NULL if TextDeviceNode is NULL or
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there was insufficient memory.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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UefiDevicePathLibConvertTextToDevicePath (
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IN CONST CHAR16 *TextDevicePath
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);
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#else
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/*
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* Small FreeBSD shim layer. Fast and lose hacks to make this code work with FreeBSD.
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*/
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#include <ctype.h>
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#define _PCD_GET_MODE_32_PcdMaximumDevicePathNodeCount 1000
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#define MAX_UINTN UINTPTR_MAX
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#define AllocatePool(x) malloc(x)
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|
#define AllocateZeroPool(x) calloc(1,x)
|
|
#define AsciiStrLen(s) strlen(s)
|
|
#define CopyGuid(dst, src) memcpy(dst, src, sizeof(uuid_t))
|
|
#define CopyMem(d, s, l) memcpy(d, s, l)
|
|
#define FreePool(x) free(x)
|
|
#define LShiftU64(x, s) ((x) << s)
|
|
#define ReadUnaligned64(x) le64dec(x)
|
|
#define ReallocatePool(old, new, ptr) realloc(ptr, new)
|
|
/*
|
|
* Quirky StrCmp returns 0 if equal, 1 if not. This is what the code
|
|
* expects, though that expectation is likely a bug (it casts the
|
|
* return value. EDK2's StrCmp returns values just like C's strcmp,
|
|
* but the parse code casts this to an UINTN, which is bogus. This
|
|
* definition papers over that bogusness to do the right thing. If
|
|
* iSCSI protocol string processing is ever fixed, we can remove this
|
|
* bletcherous kludge.
|
|
*/
|
|
#define StrCmp(a, b) (strcmp(a, b) != 0)
|
|
#define StrCpyS(d, l, s) strcpy(d, s)
|
|
#define StrHexToUint64(x) strtoll(x, NULL, 16)
|
|
#define StrHexToUintn(x) strtoll(x, NULL, 16)
|
|
#define StrLen(x) strlen(x)
|
|
#define StrSize(x) (strlen(x) + 1)
|
|
#define StrnCatS(d, l, s, len) strncat(d, s, len)
|
|
#define StrnCmp(a, b, n) strncmp(a, b, n)
|
|
#define StrnLenS(str, max) strlen(str)
|
|
#define Strtoi(x) strtol(x, NULL, 0)
|
|
#define Strtoi64(x, y) *(long long *)y = strtoll(x, NULL, 0)
|
|
#define SwapBytes64(u64) bswap64(u64)
|
|
#define UnicodeStrToAsciiStrS(src, dest, len) strlcpy(dest, src, len)
|
|
#define ZeroMem(p,l) memset(p, 0, l)
|
|
|
|
#undef ASSERT
|
|
#define ASSERT(x)
|
|
|
|
/*
|
|
* Define AllocateCopyPool and others so that we "forget" about the
|
|
* previous non-static deifnition since we want these to be static
|
|
* inlines.
|
|
*/
|
|
#define AllocateCopyPool AllocateCopyPoolFreeBSD
|
|
#define CompareGuid CompareGuidFreeBSD
|
|
#define StrHexToBytes StrHexToBytesFreeBSD
|
|
#define StrToGuid StrToGuidFreeBSD
|
|
#define WriteUnaligned64 WriteUnaligned64FreeBSD
|
|
|
|
static inline void *
|
|
AllocateCopyPool(size_t l, const void *p)
|
|
{
|
|
void *rv;
|
|
|
|
rv = malloc(l);
|
|
if (rv == NULL)
|
|
return NULL;
|
|
memcpy(rv, p, l);
|
|
return (rv);
|
|
}
|
|
|
|
static inline BOOLEAN
|
|
CompareGuid (const GUID *g1, const GUID *g2)
|
|
{
|
|
uint32_t ignored_status;
|
|
|
|
return (uuid_compare((const uuid_t *)g1, (const uuid_t *)g2,
|
|
&ignored_status) == 0);
|
|
}
|
|
|
|
static inline int
|
|
StrHexToBytes(const char *str, size_t len, uint8_t *buf, size_t buflen)
|
|
{
|
|
size_t i;
|
|
char hex[3];
|
|
|
|
/*
|
|
* Sanity check preconditions.
|
|
*/
|
|
if (buflen != len / 2 || (len % 1) == 1)
|
|
return 1;
|
|
for (i = 0; i < len; i += 2) {
|
|
if (!isxdigit(str[i]) || !isxdigit(str[i + 1]))
|
|
return 1;
|
|
hex[0] = str[i];
|
|
hex[1] = str[i + 1];
|
|
hex[2] = '\0';
|
|
buf[i / 2] = strtol(hex, NULL, 16);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
StrToGuid(const char *str, GUID *guid)
|
|
{
|
|
uint32_t status;
|
|
|
|
uuid_from_string(str, (uuid_t *)guid, &status);
|
|
}
|
|
|
|
static inline void
|
|
WriteUnaligned64(void *ptr, uint64_t val)
|
|
{
|
|
memcpy(ptr, &val, sizeof(val));
|
|
}
|
|
|
|
/*
|
|
* Hack to allow converting %g to %s in printfs. Hack because
|
|
* it's single entry, uses a static buffer, etc. Sufficient for
|
|
* the day for this file though. IF you ever have to convert
|
|
* two %g's in one format, punt. Did I mention this was super lame.
|
|
* Not to mention it's name.... Also, the error GUID is horrific.
|
|
*/
|
|
static inline const char *
|
|
guid_str(const GUID *g)
|
|
{
|
|
static char buf[36 + 1];
|
|
char *str = NULL;
|
|
int32_t ignored_status;
|
|
|
|
uuid_to_string((const uuid_t *)g, &str, &ignored_status);
|
|
if (str != NULL)
|
|
strlcpy(buf, str, sizeof(buf));
|
|
else
|
|
strlcpy(buf, "groot-cannot-decode-guid-groot-smash",
|
|
sizeof(buf)); /* ^^^^^^^ 36 characters ^^^^^^^ */
|
|
free(str);
|
|
return buf;
|
|
}
|
|
#define G(x) guid_str((const GUID *)(const void *)x)
|
|
#endif
|
|
|
|
#undef GLOBAL_REMOVE_IF_UNREFERENCED
|
|
#define GLOBAL_REMOVE_IF_UNREFERENCED static
|
|
|
|
#endif
|