You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.3 KiB
40 lines
1.3 KiB
/* 32-bit compatibility syscall for 64-bit systems for DH operations
|
|
*
|
|
* Copyright (C) 2016 Stephan Mueller <smueller@chronox.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/uaccess.h>
|
|
|
|
#include "internal.h"
|
|
|
|
/*
|
|
* Perform the DH computation or DH based key derivation.
|
|
*
|
|
* If successful, 0 will be returned.
|
|
*/
|
|
long compat_keyctl_dh_compute(struct keyctl_dh_params __user *params,
|
|
char __user *buffer, size_t buflen,
|
|
struct compat_keyctl_kdf_params __user *kdf)
|
|
{
|
|
struct keyctl_kdf_params kdfcopy;
|
|
struct compat_keyctl_kdf_params compat_kdfcopy;
|
|
|
|
if (!kdf)
|
|
return __keyctl_dh_compute(params, buffer, buflen, NULL);
|
|
|
|
if (copy_from_user(&compat_kdfcopy, kdf, sizeof(compat_kdfcopy)) != 0)
|
|
return -EFAULT;
|
|
|
|
kdfcopy.hashname = compat_ptr(compat_kdfcopy.hashname);
|
|
kdfcopy.otherinfo = compat_ptr(compat_kdfcopy.otherinfo);
|
|
kdfcopy.otherinfolen = compat_kdfcopy.otherinfolen;
|
|
memcpy(kdfcopy.__spare, compat_kdfcopy.__spare,
|
|
sizeof(kdfcopy.__spare));
|
|
|
|
return __keyctl_dh_compute(params, buffer, buflen, &kdfcopy);
|
|
}
|
|
|