/* * 32bit -> 64bit ioctl wrapper for hwdep API * Copyright (c) by Takashi Iwai * * 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 * */ /* This file is included from hwdep.c */ #include struct snd_hwdep_dsp_image32 { u32 index; unsigned char name[64]; u32 image; /* pointer */ u32 length; u32 driver_data; } /* don't set packed attribute here */; static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw, struct snd_hwdep_dsp_image32 __user *src) { struct snd_hwdep_dsp_image __user *dst; compat_caddr_t ptr; u32 val; dst = compat_alloc_user_space(sizeof(*dst)); /* index and name */ if (copy_in_user(dst, src, 4 + 64)) return -EFAULT; if (get_user(ptr, &src->image) || put_user(compat_ptr(ptr), &dst->image)) return -EFAULT; if (get_user(val, &src->length) || put_user(val, &dst->length)) return -EFAULT; if (get_user(val, &src->driver_data) || put_user(val, &dst->driver_data)) return -EFAULT; return snd_hwdep_dsp_load(hw, dst); } enum { SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) }; static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, unsigned long arg) { struct snd_hwdep *hw = file->private_data; void __user *argp = compat_ptr(arg); switch (cmd) { case SNDRV_HWDEP_IOCTL_PVERSION: case SNDRV_HWDEP_IOCTL_INFO: case SNDRV_HWDEP_IOCTL_DSP_STATUS: return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); case SNDRV_HWDEP_IOCTL_DSP_LOAD32: return snd_hwdep_dsp_load_compat(hw, argp); } if (hw->ops.ioctl_compat) return hw->ops.ioctl_compat(hw, file, cmd, arg); return -ENOIOCTLCMD; } on>
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authorJens Axboe <axboe@fb.com>2017-01-27 11:56:06 -0700
committerJens Axboe <axboe@fb.com>2017-01-27 11:56:06 -0700
commitc14024dbb156c8392908aaa822097d27c6af8ec8 (patch)
tree02f6ffa664b16bd76750c05f62708a518de2acdc /sound/sh
parent08965c2eba135bdfb6e86cf25308e01421c7e0ce (diff)
parent3b4f18843e511193e7eb616710e838f5852e661d (diff)
Merge branch 'stable/for-jens-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-linus
Konrad writes: Please pull in your 'for-linus' branch two little fixes for Xen block front: One fix is for handling the XEN_PAGE_SIZE != PAGE_SIZE (4KB vs 64KB on ARM for example) mishandling while the other is fixing the accounting for the configuration changes.
Diffstat (limited to 'sound/sh')