diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/core/rawmidi_compat.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/core/rawmidi_compat.c')
-rw-r--r-- | sound/core/rawmidi_compat.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c new file mode 100644 index 00000000000..d97631c3f3a --- /dev/null +++ b/sound/core/rawmidi_compat.c | |||
@@ -0,0 +1,120 @@ | |||
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 | |||
25 | struct sndrv_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 | |||
33 | static int snd_rawmidi_ioctl_params_compat(snd_rawmidi_file_t *rfile, | ||
34 | struct sndrv_rawmidi_params32 __user *src) | ||
35 | { | ||
36 | snd_rawmidi_params_t 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, ¶ms); | ||
50 | case SNDRV_RAWMIDI_STREAM_INPUT: | ||
51 | return snd_rawmidi_input_params(rfile->input, ¶ms); | ||
52 | } | ||
53 | return -EINVAL; | ||
54 | } | ||
55 | |||
56 | struct sndrv_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 | |||
64 | static int snd_rawmidi_ioctl_status_compat(snd_rawmidi_file_t *rfile, | ||
65 | struct sndrv_rawmidi_status32 __user *src) | ||
66 | { | ||
67 | int err; | ||
68 | snd_rawmidi_status_t 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 | |||
97 | enum { | ||
98 | SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct sndrv_rawmidi_params32), | ||
99 | SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct sndrv_rawmidi_status32), | ||
100 | }; | ||
101 | |||
102 | static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) | ||
103 | { | ||
104 | snd_rawmidi_file_t *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 | } | ||