Contributors: 3
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Stephan Mueller |
121 |
85.82% |
1 |
33.33% |
| Eric Biggers |
18 |
12.77% |
1 |
33.33% |
| Thomas Gleixner |
2 |
1.42% |
1 |
33.33% |
| Total |
141 |
|
3 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* 32-bit compatibility syscall for 64-bit systems for DH operations
*
* Copyright (C) 2016 Stephan Mueller <smueller@chronox.de>
*/
#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);
}