Release 4.15 security/keys/compat_dh.c
/* 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);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Stephan Mueller | 114 | 86.36% | 1 | 50.00% |
Eric Biggers | 18 | 13.64% | 1 | 50.00% |
Total | 132 | 100.00% | 2 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Stephan Mueller | 122 | 87.14% | 1 | 50.00% |
Eric Biggers | 18 | 12.86% | 1 | 50.00% |
Total | 140 | 100.00% | 2 | 100.00% |
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