efi_loader: parameter checks simple network protocol
Check buffer pointers are not NULL as required by the UEFI 2.7 spec.
Return EFI_UNSUPPORTED instead of EFI_INVALID_PARAMETER when trying to
transmit with non-zero header_size.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index e0e222a..d71c663 100644
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -392,7 +392,7 @@
efi_timer_check();
/* Check parameters */
- if (!this) {
+ if (!this || !buffer) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
@@ -408,7 +408,7 @@
* TODO: We would need to create the header
* if header_size != 0
*/
- ret = EFI_INVALID_PARAMETER;
+ ret = EFI_UNSUPPORTED;
goto out;
}
@@ -466,7 +466,7 @@
efi_timer_check();
/* Check parameters */
- if (!this) {
+ if (!this || !buffer || !buffer_size) {
ret = EFI_INVALID_PARAMETER;
goto out;
}