1a59d1b8e0
Based on 1 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* 32bit -> 64bit ioctl wrapper for hwdep API
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* Copyright (c) by Takashi Iwai <tiwai@suse.de>
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*/
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/* This file is included from hwdep.c */
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#include <linux/compat.h>
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struct snd_hwdep_dsp_image32 {
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u32 index;
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unsigned char name[64];
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u32 image; /* pointer */
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u32 length;
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u32 driver_data;
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} /* don't set packed attribute here */;
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static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_image32 __user *src)
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{
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struct snd_hwdep_dsp_image __user *dst;
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compat_caddr_t ptr;
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u32 val;
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dst = compat_alloc_user_space(sizeof(*dst));
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/* index and name */
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if (copy_in_user(dst, src, 4 + 64))
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return -EFAULT;
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if (get_user(ptr, &src->image) ||
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put_user(compat_ptr(ptr), &dst->image))
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return -EFAULT;
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if (get_user(val, &src->length) ||
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put_user(val, &dst->length))
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return -EFAULT;
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if (get_user(val, &src->driver_data) ||
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put_user(val, &dst->driver_data))
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return -EFAULT;
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return snd_hwdep_dsp_load(hw, dst);
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}
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enum {
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SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
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};
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static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd,
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unsigned long arg)
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{
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struct snd_hwdep *hw = file->private_data;
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void __user *argp = compat_ptr(arg);
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switch (cmd) {
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case SNDRV_HWDEP_IOCTL_PVERSION:
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case SNDRV_HWDEP_IOCTL_INFO:
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case SNDRV_HWDEP_IOCTL_DSP_STATUS:
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return snd_hwdep_ioctl(file, cmd, (unsigned long)argp);
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case SNDRV_HWDEP_IOCTL_DSP_LOAD32:
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return snd_hwdep_dsp_load_compat(hw, argp);
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}
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if (hw->ops.ioctl_compat)
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return hw->ops.ioctl_compat(hw, file, cmd, arg);
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return -ENOIOCTLCMD;
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}
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