tyler.durden/audk
1
0
Fork 0
mirror of https://github.com/acidanthera/audk.git synced 2025-07-31 01:24:12 +02:00
Code Issues Packages Projects Releases Wiki Activity

MdeModulePkg: Ignore BootFileName if it is overloaded.

Browse Source 
Make sure "BootFileName" is not overloaded before use it in PXE driver.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: chenzhihui <chenzhihui4@huawei.com>
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
This commit is contained in:
Heyi Guo 2016-04-23 15:01:16 +08:00 committed by Fu Siyuan
parent a1522257a9
commit 61e0f079bc
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
View File

@ -2,7 +2,7 @@
Support for PxeBc dhcp functions. Support for PxeBc dhcp functions.
Copyright (c) 2013, Red Hat, Inc. Copyright (c) 2013, Red Hat, Inc.
Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at which accompanies this distribution. The full text of the license may be found at
@ -228,9 +228,13 @@ PxeBcParseCachedDhcpPacket (
// If the bootfile is not present and bootfilename is present in dhcp packet, just parse it. // If the bootfile is not present and bootfilename is present in dhcp packet, just parse it.
// And do not count dhcp option header, or else will destroy the serverhostname. // And do not count dhcp option header, or else will destroy the serverhostname.
// //
Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] = (EFI_DHCP4_PACKET_OPTION *) (&Offer->Dhcp4.Header.BootFileName[0] - // Make sure "BootFileName" is not overloaded.
//
if (Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD] == NULL ||
(Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD]->Data[0] & PXEBC_DHCP4_OVERLOAD_FILE) == 0) {
Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] = (EFI_DHCP4_PACKET_OPTION *) (&Offer->Dhcp4.Header.BootFileName[0] -
OFFSET_OF (EFI_DHCP4_PACKET_OPTION, Data[0])); OFFSET_OF (EFI_DHCP4_PACKET_OPTION, Data[0]));
}
} }
// //