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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123// SPDX-License-Identifier: GPL-2.0-or-later/* * 32bit -> 64bit ioctl wrapper for timer API * Copyright (c) by Takashi Iwai <tiwai@suse.de> */
/* This file included from timer.c */
#include <linux/compat.h>
/* * ILP32/LP64 has different size for 'long' type. Additionally, the size * of storage alignment differs depending on architectures. Here, '__packed' * qualifier is used so that the size of this structure is multiple of 4 and * it fits to any architectures with 32 bit storage alignment. */struct snd_timer_gparams32 { struct snd_timer_id tid; u32 period_num; u32 period_den; unsigned char reserved[32];} __packed;
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_gparams_compat(struct file *file, struct snd_timer_gparams32 __user *user){ struct snd_timer_gparams gparams;
if (copy_from_user(&gparams.tid, &user->tid, sizeof(gparams.tid)) || get_user(gparams.period_num, &user->period_num) || get_user(gparams.period_den, &user->period_den)) return -EFAULT;
return timer_set_gparams(&gparams);}
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;
tu = file->private_data; if (!tu->timeri) return -EBADFD;
struct snd_timer *t __free(snd_timeri_timer) = snd_timeri_timer_get(tu->timeri); if (!t) return -EBADFD; 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; strscpy(info.id, t->id, sizeof(info.id)); strscpy(info.name, t->name, sizeof(info.name)); info.resolution = t->hw.resolution; if (copy_to_user(_info, &info, sizeof(*_info))) return -EFAULT; return 0;}
enum { SNDRV_TIMER_IOCTL_GPARAMS32 = _IOW('T', 0x04, struct snd_timer_gparams32), SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32), SNDRV_TIMER_IOCTL_STATUS_COMPAT32 = _IOW('T', 0x14, struct snd_timer_status32), SNDRV_TIMER_IOCTL_STATUS_COMPAT64 = _IOW('T', 0x14, struct snd_timer_status64),};
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_OLD: case SNDRV_TIMER_IOCTL_TREAD64: case SNDRV_TIMER_IOCTL_GINFO: 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, true); case SNDRV_TIMER_IOCTL_GPARAMS32: return snd_timer_user_gparams_compat(file, argp); case SNDRV_TIMER_IOCTL_INFO32: return snd_timer_user_info_compat(file, argp); case SNDRV_TIMER_IOCTL_STATUS_COMPAT32: return snd_timer_user_status32(file, argp); case SNDRV_TIMER_IOCTL_STATUS_COMPAT64: return snd_timer_user_status64(file, argp); } return -ENOIOCTLCMD;}
static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg){ struct snd_timer_user *tu = file->private_data;
guard(mutex)(&tu->ioctl_lock); return __snd_timer_user_ioctl_compat(file, cmd, arg);}