threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* 32-bit compatibility syscall for 64-bit systems for DH operations
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*
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* Copyright (C) 2016 Stephan Mueller <smueller@chronox.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/uaccess.h>
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#include "internal.h"
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/*
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* Perform the DH computation or DH based key derivation.
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*
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* If successful, 0 will be returned.
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*/
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long compat_keyctl_dh_compute(struct keyctl_dh_params __user *params,
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char __user *buffer, size_t buflen,
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struct compat_keyctl_kdf_params __user *kdf)
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{
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struct keyctl_kdf_params kdfcopy;
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struct compat_keyctl_kdf_params compat_kdfcopy;
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if (!kdf)
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return __keyctl_dh_compute(params, buffer, buflen, NULL);
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if (copy_from_user(&compat_kdfcopy, kdf, sizeof(compat_kdfcopy)) != 0)
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return -EFAULT;
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kdfcopy.hashname = compat_ptr(compat_kdfcopy.hashname);
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kdfcopy.otherinfo = compat_ptr(compat_kdfcopy.otherinfo);
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kdfcopy.otherinfolen = compat_kdfcopy.otherinfolen;
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memcpy(kdfcopy.__spare, compat_kdfcopy.__spare,
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sizeof(kdfcopy.__spare));
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return __keyctl_dh_compute(params, buffer, buflen, &kdfcopy);
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}
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