Linux Audio

Check our new training course

Loading...
v3.15
  1/*
  2 *   32bit -> 64bit ioctl wrapper for raw MIDI API
  3 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
  4 *
  5 *   This program is free software; you can redistribute it and/or modify
  6 *   it under the terms of the GNU General Public License as published by
  7 *   the Free Software Foundation; either version 2 of the License, or
  8 *   (at your option) any later version.
  9 *
 10 *   This program is distributed in the hope that it will be useful,
 11 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 *   GNU General Public License for more details.
 14 *
 15 *   You should have received a copy of the GNU General Public License
 16 *   along with this program; if not, write to the Free Software
 17 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 18 *
 19 */
 20
 21/* This file included from rawmidi.c */
 22
 23#include <linux/compat.h>
 24
 25struct snd_rawmidi_params32 {
 26	s32 stream;
 27	u32 buffer_size;
 28	u32 avail_min;
 29	unsigned int no_active_sensing; /* avoid bit-field */
 30	unsigned char reserved[16];
 31} __attribute__((packed));
 32
 33static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
 34					   struct snd_rawmidi_params32 __user *src)
 35{
 36	struct snd_rawmidi_params params;
 37	unsigned int val;
 38
 39	if (rfile->output == NULL)
 40		return -EINVAL;
 41	if (get_user(params.stream, &src->stream) ||
 42	    get_user(params.buffer_size, &src->buffer_size) ||
 43	    get_user(params.avail_min, &src->avail_min) ||
 44	    get_user(val, &src->no_active_sensing))
 45		return -EFAULT;
 46	params.no_active_sensing = val;
 47	switch (params.stream) {
 48	case SNDRV_RAWMIDI_STREAM_OUTPUT:
 49		return snd_rawmidi_output_params(rfile->output, &params);
 50	case SNDRV_RAWMIDI_STREAM_INPUT:
 51		return snd_rawmidi_input_params(rfile->input, &params);
 52	}
 53	return -EINVAL;
 54}
 55
 56struct snd_rawmidi_status32 {
 57	s32 stream;
 58	struct compat_timespec tstamp;
 59	u32 avail;
 60	u32 xruns;
 61	unsigned char reserved[16];
 62} __attribute__((packed));
 63
 64static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
 65					   struct snd_rawmidi_status32 __user *src)
 66{
 67	int err;
 68	struct snd_rawmidi_status status;
 69
 70	if (rfile->output == NULL)
 71		return -EINVAL;
 72	if (get_user(status.stream, &src->stream))
 73		return -EFAULT;
 74
 75	switch (status.stream) {
 76	case SNDRV_RAWMIDI_STREAM_OUTPUT:
 77		err = snd_rawmidi_output_status(rfile->output, &status);
 78		break;
 79	case SNDRV_RAWMIDI_STREAM_INPUT:
 80		err = snd_rawmidi_input_status(rfile->input, &status);
 81		break;
 82	default:
 83		return -EINVAL;
 84	}
 85	if (err < 0)
 86		return err;
 87
 88	if (put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) ||
 89	    put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) ||
 90	    put_user(status.avail, &src->avail) ||
 91	    put_user(status.xruns, &src->xruns))
 92		return -EFAULT;
 93
 94	return 0;
 95}
 96
 97enum {
 98	SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
 99	SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
100};
101
102static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
103{
104	struct snd_rawmidi_file *rfile;
105	void __user *argp = compat_ptr(arg);
106
107	rfile = file->private_data;
108	switch (cmd) {
109	case SNDRV_RAWMIDI_IOCTL_PVERSION:
110	case SNDRV_RAWMIDI_IOCTL_INFO:
111	case SNDRV_RAWMIDI_IOCTL_DROP:
112	case SNDRV_RAWMIDI_IOCTL_DRAIN:
113		return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
114	case SNDRV_RAWMIDI_IOCTL_PARAMS32:
115		return snd_rawmidi_ioctl_params_compat(rfile, argp);
116	case SNDRV_RAWMIDI_IOCTL_STATUS32:
117		return snd_rawmidi_ioctl_status_compat(rfile, argp);
118	}
119	return -ENOIOCTLCMD;
120}
v3.5.6
  1/*
  2 *   32bit -> 64bit ioctl wrapper for raw MIDI API
  3 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
  4 *
  5 *   This program is free software; you can redistribute it and/or modify
  6 *   it under the terms of the GNU General Public License as published by
  7 *   the Free Software Foundation; either version 2 of the License, or
  8 *   (at your option) any later version.
  9 *
 10 *   This program is distributed in the hope that it will be useful,
 11 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 *   GNU General Public License for more details.
 14 *
 15 *   You should have received a copy of the GNU General Public License
 16 *   along with this program; if not, write to the Free Software
 17 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 18 *
 19 */
 20
 21/* This file included from rawmidi.c */
 22
 23#include <linux/compat.h>
 24
 25struct snd_rawmidi_params32 {
 26	s32 stream;
 27	u32 buffer_size;
 28	u32 avail_min;
 29	unsigned int no_active_sensing; /* avoid bit-field */
 30	unsigned char reserved[16];
 31} __attribute__((packed));
 32
 33static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
 34					   struct snd_rawmidi_params32 __user *src)
 35{
 36	struct snd_rawmidi_params params;
 37	unsigned int val;
 38
 39	if (rfile->output == NULL)
 40		return -EINVAL;
 41	if (get_user(params.stream, &src->stream) ||
 42	    get_user(params.buffer_size, &src->buffer_size) ||
 43	    get_user(params.avail_min, &src->avail_min) ||
 44	    get_user(val, &src->no_active_sensing))
 45		return -EFAULT;
 46	params.no_active_sensing = val;
 47	switch (params.stream) {
 48	case SNDRV_RAWMIDI_STREAM_OUTPUT:
 49		return snd_rawmidi_output_params(rfile->output, &params);
 50	case SNDRV_RAWMIDI_STREAM_INPUT:
 51		return snd_rawmidi_input_params(rfile->input, &params);
 52	}
 53	return -EINVAL;
 54}
 55
 56struct snd_rawmidi_status32 {
 57	s32 stream;
 58	struct compat_timespec tstamp;
 59	u32 avail;
 60	u32 xruns;
 61	unsigned char reserved[16];
 62} __attribute__((packed));
 63
 64static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
 65					   struct snd_rawmidi_status32 __user *src)
 66{
 67	int err;
 68	struct snd_rawmidi_status status;
 69
 70	if (rfile->output == NULL)
 71		return -EINVAL;
 72	if (get_user(status.stream, &src->stream))
 73		return -EFAULT;
 74
 75	switch (status.stream) {
 76	case SNDRV_RAWMIDI_STREAM_OUTPUT:
 77		err = snd_rawmidi_output_status(rfile->output, &status);
 78		break;
 79	case SNDRV_RAWMIDI_STREAM_INPUT:
 80		err = snd_rawmidi_input_status(rfile->input, &status);
 81		break;
 82	default:
 83		return -EINVAL;
 84	}
 85	if (err < 0)
 86		return err;
 87
 88	if (put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) ||
 89	    put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) ||
 90	    put_user(status.avail, &src->avail) ||
 91	    put_user(status.xruns, &src->xruns))
 92		return -EFAULT;
 93
 94	return 0;
 95}
 96
 97enum {
 98	SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
 99	SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
100};
101
102static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
103{
104	struct snd_rawmidi_file *rfile;
105	void __user *argp = compat_ptr(arg);
106
107	rfile = file->private_data;
108	switch (cmd) {
109	case SNDRV_RAWMIDI_IOCTL_PVERSION:
110	case SNDRV_RAWMIDI_IOCTL_INFO:
111	case SNDRV_RAWMIDI_IOCTL_DROP:
112	case SNDRV_RAWMIDI_IOCTL_DRAIN:
113		return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
114	case SNDRV_RAWMIDI_IOCTL_PARAMS32:
115		return snd_rawmidi_ioctl_params_compat(rfile, argp);
116	case SNDRV_RAWMIDI_IOCTL_STATUS32:
117		return snd_rawmidi_ioctl_status_compat(rfile, argp);
118	}
119	return -ENOIOCTLCMD;
120}