brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00
Code Issues Projects Releases Wiki Activity

efi_loader: correct device path check

Browse Source 
Since commit 226cddbe32 ("efi_loader: check device path in
InstallMultipleProtocolInterfaces") iPXE fails to access the network.

LocateDevicePath() returns EFI_SUCCESS even if a shorter path is found as a
partial match. It returns the remaining path. So to be sure that we found a
complete match we need to check that the remaining path refers to an end
node.

Provide debug output if a device path has already been installed.

Fixes: 226cddbe32 ("efi_loader: check device path in
       InstallMultipleProtocolInterfaces")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-05-20 19:55:18 +00:00
parent bb2b13d528
commit 20562893fa
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/efi_loader/efi_boottime.c
View File

@ -2360,7 +2360,10 @@ efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
r = EFI_CALL(efi_locate_device_path(protocol, &dp,
&old_handle));
if (r == EFI_SUCCESS) {
if (r == EFI_SUCCESS &&
dp->type == DEVICE_PATH_TYPE_END) {
EFI_PRINT("Path %pD already installed\n",
protocol_interface);
r = EFI_ALREADY_STARTED;
break;
}