diff options
Diffstat (limited to 'SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c')
| -rw-r--r-- | SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c b/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c index df7db12b77..b2d2236380 100644 --- a/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c @@ -104,6 +104,7 @@ RngGetRNG ( /**
Returns information about the random number generation implementation.
+ @param[in] This A pointer to the EFI_RNG_PROTOCOL instance.
@param[in,out] RNGAlgorithmListSize On input, the size in bytes of RNGAlgorithmList.
On output with a return code of EFI_SUCCESS, the size
in bytes of the data returned in RNGAlgorithmList. On output
@@ -116,18 +117,27 @@ RngGetRNG ( is the default algorithm for the driver.
@retval EFI_SUCCESS The RNG algorithm list was returned successfully.
+ @retval EFI_UNSUPPORTED No supported algorithms found.
+ @retval EFI_DEVICE_ERROR The list of algorithms could not be retrieved due to a
+ hardware or firmware error.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
@retval EFI_BUFFER_TOO_SMALL The buffer RNGAlgorithmList is too small to hold the result.
**/
-UINTN
+EFI_STATUS
EFIAPI
-ArchGetSupportedRngAlgorithms (
- IN OUT UINTN *RNGAlgorithmListSize,
- OUT EFI_RNG_ALGORITHM *RNGAlgorithmList
+RngGetInfo (
+ IN EFI_RNG_PROTOCOL *This,
+ IN OUT UINTN *RNGAlgorithmListSize,
+ OUT EFI_RNG_ALGORITHM *RNGAlgorithmList
)
{
UINTN RequiredSize;
+ if ((This == NULL) || (RNGAlgorithmListSize == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
RequiredSize = 2 * sizeof (EFI_RNG_ALGORITHM);
if (*RNGAlgorithmListSize < RequiredSize) {
@@ -135,6 +145,10 @@ ArchGetSupportedRngAlgorithms ( return EFI_BUFFER_TOO_SMALL;
}
+ if (RNGAlgorithmList == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
CopyMem (&RNGAlgorithmList[0], &gEfiRngAlgorithmSp80090Ctr256Guid, sizeof (EFI_RNG_ALGORITHM));
// x86 platforms also support EFI_RNG_ALGORITHM_RAW via RDSEED
|