From: Andreas Reichel <[email protected]> To decide wether a volume is on the boot medium, add a function that extracts the part of the device path that describes the boot medium (in the use cases we have atm).
Signed-off-by: Andreas Reichel <[email protected]> --- include/utils.h | 1 + utils.c | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/include/utils.h b/include/utils.h index b8eddd1..e7c76fc 100644 --- a/include/utils.h +++ b/include/utils.h @@ -41,5 +41,6 @@ EFI_STATUS get_volumes(VOLUME_DESC **volumes, UINTN *count); EFI_STATUS close_volumes(VOLUME_DESC *volumes, UINTN count); EFI_DEVICE_PATH *FileDevicePathFromConfig(EFI_HANDLE device, CHAR16 *payloadpath); +CHAR16 *GetBootMediumPath(CHAR16 *input); #endif // __H_UTILS__ diff --git a/utils.c b/utils.c index 5aff01b..c544eeb 100644 --- a/utils.c +++ b/utils.c @@ -271,3 +271,28 @@ EFI_DEVICE_PATH *FileDevicePathFromConfig(EFI_HANDLE device, return appendeddevpath; } + +CHAR16 *GetBootMediumPath(CHAR16 *input) +{ + CHAR16 *dst; + UINTN len; + + len = StrLen(input); + + dst = mmalloc((len + 1) * sizeof(CHAR16)); + if (!dst) { + return NULL; + } + + StrCpy(dst, input); + + for (UINTN i = len; i > 0; i--) + { + if (dst[i * sizeof(CHAR16)] == L'/') { + dst[i * sizeof(CHAR16)] = L'\0'; + break; + } + } + + return dst; +} -- 2.18.0 -- You received this message because you are subscribed to the Google Groups "EFI Boot Guard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/efibootguard-dev/20180905162030.28077-2-andreas.reichel.ext%40siemens.com. For more options, visit https://groups.google.com/d/optout.
