2 * 32bit -> 64bit ioctl wrapper for raw MIDI API
3 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
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.
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.
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
21 /* This file included from rawmidi.c */
23 #include <linux/compat.h>
25 struct snd_rawmidi_params32 {
29 unsigned int no_active_sensing; /* avoid bit-field */
30 unsigned char reserved[16];
31 } __attribute__((packed));
33 static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
34 struct snd_rawmidi_params32 __user *src)
36 struct snd_rawmidi_params params;
39 if (get_user(params.stream, &src->stream) ||
40 get_user(params.buffer_size, &src->buffer_size) ||
41 get_user(params.avail_min, &src->avail_min) ||
42 get_user(val, &src->no_active_sensing))
44 params.no_active_sensing = val;
45 switch (params.stream) {
46 case SNDRV_RAWMIDI_STREAM_OUTPUT:
49 return snd_rawmidi_output_params(rfile->output, ¶ms);
50 case SNDRV_RAWMIDI_STREAM_INPUT:
53 return snd_rawmidi_input_params(rfile->input, ¶ms);
58 struct snd_rawmidi_status32 {
60 struct compat_timespec tstamp;
63 unsigned char reserved[16];
64 } __attribute__((packed));
66 static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
67 struct snd_rawmidi_status32 __user *src)
70 struct snd_rawmidi_status status;
72 if (get_user(status.stream, &src->stream))
75 switch (status.stream) {
76 case SNDRV_RAWMIDI_STREAM_OUTPUT:
79 err = snd_rawmidi_output_status(rfile->output, &status);
81 case SNDRV_RAWMIDI_STREAM_INPUT:
84 err = snd_rawmidi_input_status(rfile->input, &status);
92 if (compat_put_timespec(&status.tstamp, &src->tstamp) ||
93 put_user(status.avail, &src->avail) ||
94 put_user(status.xruns, &src->xruns))
100 #ifdef CONFIG_X86_X32
101 /* X32 ABI has 64bit timespec and 64bit alignment */
102 struct snd_rawmidi_status_x32 {
104 u32 rsvd; /* alignment */
105 struct timespec tstamp;
108 unsigned char reserved[16];
109 } __attribute__((packed));
111 #define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
113 static int snd_rawmidi_ioctl_status_x32(struct snd_rawmidi_file *rfile,
114 struct snd_rawmidi_status_x32 __user *src)
117 struct snd_rawmidi_status status;
119 if (get_user(status.stream, &src->stream))
122 switch (status.stream) {
123 case SNDRV_RAWMIDI_STREAM_OUTPUT:
126 err = snd_rawmidi_output_status(rfile->output, &status);
128 case SNDRV_RAWMIDI_STREAM_INPUT:
131 err = snd_rawmidi_input_status(rfile->input, &status);
139 if (put_timespec(&status.tstamp, &src->tstamp) ||
140 put_user(status.avail, &src->avail) ||
141 put_user(status.xruns, &src->xruns))
146 #endif /* CONFIG_X86_X32 */
149 SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
150 SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
151 #ifdef CONFIG_X86_X32
152 SNDRV_RAWMIDI_IOCTL_STATUS_X32 = _IOWR('W', 0x20, struct snd_rawmidi_status_x32),
153 #endif /* CONFIG_X86_X32 */
156 static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
158 struct snd_rawmidi_file *rfile;
159 void __user *argp = compat_ptr(arg);
161 rfile = file->private_data;
163 case SNDRV_RAWMIDI_IOCTL_PVERSION:
164 case SNDRV_RAWMIDI_IOCTL_INFO:
165 case SNDRV_RAWMIDI_IOCTL_DROP:
166 case SNDRV_RAWMIDI_IOCTL_DRAIN:
167 return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
168 case SNDRV_RAWMIDI_IOCTL_PARAMS32:
169 return snd_rawmidi_ioctl_params_compat(rfile, argp);
170 case SNDRV_RAWMIDI_IOCTL_STATUS32:
171 return snd_rawmidi_ioctl_status_compat(rfile, argp);
172 #ifdef CONFIG_X86_X32
173 case SNDRV_RAWMIDI_IOCTL_STATUS_X32:
174 return snd_rawmidi_ioctl_status_x32(rfile, argp);
175 #endif /* CONFIG_X86_X32 */