120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
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/*
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* 32bit -> 64bit ioctl wrapper for timer API
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* Copyright (c) by Takashi Iwai <tiwai@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* This file included from timer.c */
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#include <linux/compat.h>
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struct sndrv_timer_info32 {
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u32 flags;
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s32 card;
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unsigned char id[64];
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unsigned char name[80];
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u32 reserved0;
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u32 resolution;
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unsigned char reserved[64];
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};
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static int snd_timer_user_info_compat(struct file *file,
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struct sndrv_timer_info32 __user *_info)
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{
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snd_timer_user_t *tu;
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struct sndrv_timer_info32 info;
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snd_timer_t *t;
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tu = file->private_data;
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snd_assert(tu->timeri != NULL, return -ENXIO);
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t = tu->timeri->timer;
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snd_assert(t != NULL, return -ENXIO);
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memset(&info, 0, sizeof(info));
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info.card = t->card ? t->card->number : -1;
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if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
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info.flags |= SNDRV_TIMER_FLG_SLAVE;
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strlcpy(info.id, t->id, sizeof(info.id));
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strlcpy(info.name, t->name, sizeof(info.name));
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info.resolution = t->hw.resolution;
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if (copy_to_user(_info, &info, sizeof(*_info)))
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return -EFAULT;
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return 0;
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}
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struct sndrv_timer_status32 {
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struct compat_timespec tstamp;
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u32 resolution;
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u32 lost;
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u32 overrun;
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u32 queue;
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unsigned char reserved[64];
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};
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static int snd_timer_user_status_compat(struct file *file,
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struct sndrv_timer_status32 __user *_status)
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{
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snd_timer_user_t *tu;
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snd_timer_status_t status;
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tu = file->private_data;
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snd_assert(tu->timeri != NULL, return -ENXIO);
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memset(&status, 0, sizeof(status));
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status.tstamp = tu->tstamp;
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status.resolution = snd_timer_resolution(tu->timeri);
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status.lost = tu->timeri->lost;
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status.overrun = tu->overrun;
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spin_lock_irq(&tu->qlock);
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status.queue = tu->qused;
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spin_unlock_irq(&tu->qlock);
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if (copy_to_user(_status, &status, sizeof(status)))
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return -EFAULT;
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return 0;
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}
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/*
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*/
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enum {
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SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct sndrv_timer_info32),
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SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct sndrv_timer_status32),
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};
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static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
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{
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void __user *argp = compat_ptr(arg);
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switch (cmd) {
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case SNDRV_TIMER_IOCTL_PVERSION:
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case SNDRV_TIMER_IOCTL_TREAD:
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case SNDRV_TIMER_IOCTL_GINFO:
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case SNDRV_TIMER_IOCTL_GPARAMS:
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case SNDRV_TIMER_IOCTL_GSTATUS:
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case SNDRV_TIMER_IOCTL_SELECT:
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case SNDRV_TIMER_IOCTL_PARAMS:
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case SNDRV_TIMER_IOCTL_START:
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case SNDRV_TIMER_IOCTL_STOP:
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case SNDRV_TIMER_IOCTL_CONTINUE:
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case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
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return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
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case SNDRV_TIMER_IOCTL_INFO32:
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return snd_timer_user_info_compat(file, argp);
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case SNDRV_TIMER_IOCTL_STATUS32:
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return snd_timer_user_status_compat(file, argp);
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}
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return -ENOIOCTLCMD;
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}
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