/* * 32bit -> 64bit ioctl wrapper for timer API * Copyright (c) by Takashi Iwai <tiwai@suse.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. * * 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 included from timer.c */ #include <linux/compat.h> struct snd_timer_info32 { u32 flags; s32 card; unsigned char id[64]; unsigned char name[80]; u32 reserved0; u32 resolution; unsigned char reserved[64]; }; static int snd_timer_user_info_compat(struct file *file, struct snd_timer_info32 __user *_info) { struct snd_timer_user *tu; struct snd_timer_info32 info; struct snd_timer *t; tu = file->private_data; if (snd_BUG_ON(!tu->timeri)) return -ENXIO; t = tu->timeri->timer; if (snd_BUG_ON(!t)) return -ENXIO; memset(&info, 0, sizeof(info)); info.card = t->card ? t->card->number : -1; if (t->hw.flags & SNDRV_TIMER_HW_SLAVE) info.flags |= SNDRV_TIMER_FLG_SLAVE; strlcpy(info.id, t->id, sizeof(info.id)); strlcpy(info.name, t->name, sizeof(info.name)); info.resolution = t->hw.resolution; if (copy_to_user(_info, &info, sizeof(*_info))) return -EFAULT; return 0; } struct snd_timer_status32 { struct compat_timespec tstamp; u32 resolution; u32 lost; u32 overrun; u32 queue; unsigned char reserved[64]; }; static int snd_timer_user_status_compat(struct file *file, struct snd_timer_status32 __user *_status) { struct snd_timer_user *tu; struct snd_timer_status status; tu = file->private_data; if (snd_BUG_ON(!tu->timeri)) return -ENXIO; memset(&status, 0, sizeof(status)); status.tstamp = tu->tstamp; status.resolution = snd_timer_resolution(tu->timeri); status.lost = tu->timeri->lost; status.overrun = tu->overrun; spin_lock_irq(&tu->qlock); status.queue = tu->qused; spin_unlock_irq(&tu->qlock); if (copy_to_user(_status, &status, sizeof(status))) return -EFAULT; return 0; } /* */ enum { SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32), SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32), }; static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) { void __user *argp = compat_ptr(arg); switch (cmd) { case SNDRV_TIMER_IOCTL_PVERSION: case SNDRV_TIMER_IOCTL_TREAD: case SNDRV_TIMER_IOCTL_GINFO: case SNDRV_TIMER_IOCTL_GPARAMS: case SNDRV_TIMER_IOCTL_GSTATUS: case SNDRV_TIMER_IOCTL_SELECT: case SNDRV_TIMER_IOCTL_PARAMS: case SNDRV_TIMER_IOCTL_START: case SNDRV_TIMER_IOCTL_START_OLD: case SNDRV_TIMER_IOCTL_STOP: case SNDRV_TIMER_IOCTL_STOP_OLD: case SNDRV_TIMER_IOCTL_CONTINUE: case SNDRV_TIMER_IOCTL_CONTINUE_OLD: case SNDRV_TIMER_IOCTL_PAUSE: case SNDRV_TIMER_IOCTL_PAUSE_OLD: case SNDRV_TIMER_IOCTL_NEXT_DEVICE: return snd_timer_user_ioctl(file, cmd, (unsigned long)argp); case SNDRV_TIMER_IOCTL_INFO32: return snd_timer_user_info_compat(file, argp); case SNDRV_TIMER_IOCTL_STATUS32: return snd_timer_user_status_compat(file, argp); } return -ENOIOCTLCMD; }