Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * 32bit -> 64bit ioctl wrapper for timer 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 timer.c */ | |
22 | ||
23 | #include <linux/compat.h> | |
24 | ||
91d2178e TS |
25 | /* |
26 | * ILP32/LP64 has different size for 'long' type. Additionally, the size | |
27 | * of storage alignment differs depending on architectures. Here, '__packed' | |
28 | * qualifier is used so that the size of this structure is multiple of 4 and | |
29 | * it fits to any architectures with 32 bit storage alignment. | |
30 | */ | |
31 | struct snd_timer_gparams32 { | |
32 | struct snd_timer_id tid; | |
33 | u32 period_num; | |
34 | u32 period_den; | |
35 | unsigned char reserved[32]; | |
36 | } __packed; | |
37 | ||
53d2f744 | 38 | struct snd_timer_info32 { |
1da177e4 LT |
39 | u32 flags; |
40 | s32 card; | |
41 | unsigned char id[64]; | |
42 | unsigned char name[80]; | |
43 | u32 reserved0; | |
44 | u32 resolution; | |
45 | unsigned char reserved[64]; | |
46 | }; | |
47 | ||
91d2178e TS |
48 | static int snd_timer_user_gparams_compat(struct file *file, |
49 | struct snd_timer_gparams32 __user *user) | |
50 | { | |
51 | struct snd_timer_gparams gparams; | |
52 | ||
53 | if (copy_from_user(&gparams.tid, &user->tid, sizeof(gparams.tid)) || | |
54 | get_user(gparams.period_num, &user->period_num) || | |
55 | get_user(gparams.period_den, &user->period_den)) | |
56 | return -EFAULT; | |
57 | ||
58 | return timer_set_gparams(&gparams); | |
59 | } | |
60 | ||
1da177e4 | 61 | static int snd_timer_user_info_compat(struct file *file, |
53d2f744 | 62 | struct snd_timer_info32 __user *_info) |
1da177e4 | 63 | { |
53d2f744 TI |
64 | struct snd_timer_user *tu; |
65 | struct snd_timer_info32 info; | |
66 | struct snd_timer *t; | |
1da177e4 LT |
67 | |
68 | tu = file->private_data; | |
7eaa943c TI |
69 | if (snd_BUG_ON(!tu->timeri)) |
70 | return -ENXIO; | |
1da177e4 | 71 | t = tu->timeri->timer; |
7eaa943c TI |
72 | if (snd_BUG_ON(!t)) |
73 | return -ENXIO; | |
1da177e4 LT |
74 | memset(&info, 0, sizeof(info)); |
75 | info.card = t->card ? t->card->number : -1; | |
76 | if (t->hw.flags & SNDRV_TIMER_HW_SLAVE) | |
77 | info.flags |= SNDRV_TIMER_FLG_SLAVE; | |
78 | strlcpy(info.id, t->id, sizeof(info.id)); | |
79 | strlcpy(info.name, t->name, sizeof(info.name)); | |
80 | info.resolution = t->hw.resolution; | |
81 | if (copy_to_user(_info, &info, sizeof(*_info))) | |
82 | return -EFAULT; | |
83 | return 0; | |
84 | } | |
85 | ||
53d2f744 | 86 | struct snd_timer_status32 { |
1da177e4 LT |
87 | struct compat_timespec tstamp; |
88 | u32 resolution; | |
89 | u32 lost; | |
90 | u32 overrun; | |
91 | u32 queue; | |
92 | unsigned char reserved[64]; | |
93 | }; | |
94 | ||
95 | static int snd_timer_user_status_compat(struct file *file, | |
53d2f744 | 96 | struct snd_timer_status32 __user *_status) |
1da177e4 | 97 | { |
53d2f744 | 98 | struct snd_timer_user *tu; |
3a72494a | 99 | struct snd_timer_status32 status; |
1da177e4 LT |
100 | |
101 | tu = file->private_data; | |
7eaa943c TI |
102 | if (snd_BUG_ON(!tu->timeri)) |
103 | return -ENXIO; | |
1da177e4 | 104 | memset(&status, 0, sizeof(status)); |
3a72494a TI |
105 | status.tstamp.tv_sec = tu->tstamp.tv_sec; |
106 | status.tstamp.tv_nsec = tu->tstamp.tv_nsec; | |
1da177e4 LT |
107 | status.resolution = snd_timer_resolution(tu->timeri); |
108 | status.lost = tu->timeri->lost; | |
109 | status.overrun = tu->overrun; | |
110 | spin_lock_irq(&tu->qlock); | |
111 | status.queue = tu->qused; | |
112 | spin_unlock_irq(&tu->qlock); | |
113 | if (copy_to_user(_status, &status, sizeof(status))) | |
114 | return -EFAULT; | |
115 | return 0; | |
116 | } | |
117 | ||
b24e7ad1 TI |
118 | #ifdef CONFIG_X86_X32 |
119 | /* X32 ABI has the same struct as x86-64 */ | |
120 | #define snd_timer_user_status_x32(file, s) \ | |
121 | snd_timer_user_status(file, s) | |
122 | #endif /* CONFIG_X86_X32 */ | |
123 | ||
1da177e4 LT |
124 | /* |
125 | */ | |
126 | ||
127 | enum { | |
91d2178e | 128 | SNDRV_TIMER_IOCTL_GPARAMS32 = _IOW('T', 0x04, struct snd_timer_gparams32), |
53d2f744 TI |
129 | SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32), |
130 | SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32), | |
b24e7ad1 TI |
131 | #ifdef CONFIG_X86_X32 |
132 | SNDRV_TIMER_IOCTL_STATUS_X32 = _IOW('T', 0x14, struct snd_timer_status), | |
133 | #endif /* CONFIG_X86_X32 */ | |
1da177e4 LT |
134 | }; |
135 | ||
136 | static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) | |
137 | { | |
138 | void __user *argp = compat_ptr(arg); | |
139 | ||
140 | switch (cmd) { | |
141 | case SNDRV_TIMER_IOCTL_PVERSION: | |
142 | case SNDRV_TIMER_IOCTL_TREAD: | |
143 | case SNDRV_TIMER_IOCTL_GINFO: | |
1da177e4 LT |
144 | case SNDRV_TIMER_IOCTL_GSTATUS: |
145 | case SNDRV_TIMER_IOCTL_SELECT: | |
146 | case SNDRV_TIMER_IOCTL_PARAMS: | |
147 | case SNDRV_TIMER_IOCTL_START: | |
8c50b37c | 148 | case SNDRV_TIMER_IOCTL_START_OLD: |
1da177e4 | 149 | case SNDRV_TIMER_IOCTL_STOP: |
8c50b37c | 150 | case SNDRV_TIMER_IOCTL_STOP_OLD: |
1da177e4 | 151 | case SNDRV_TIMER_IOCTL_CONTINUE: |
8c50b37c | 152 | case SNDRV_TIMER_IOCTL_CONTINUE_OLD: |
15790a6b | 153 | case SNDRV_TIMER_IOCTL_PAUSE: |
8c50b37c | 154 | case SNDRV_TIMER_IOCTL_PAUSE_OLD: |
1da177e4 LT |
155 | case SNDRV_TIMER_IOCTL_NEXT_DEVICE: |
156 | return snd_timer_user_ioctl(file, cmd, (unsigned long)argp); | |
91d2178e TS |
157 | case SNDRV_TIMER_IOCTL_GPARAMS32: |
158 | return snd_timer_user_gparams_compat(file, argp); | |
1da177e4 LT |
159 | case SNDRV_TIMER_IOCTL_INFO32: |
160 | return snd_timer_user_info_compat(file, argp); | |
161 | case SNDRV_TIMER_IOCTL_STATUS32: | |
162 | return snd_timer_user_status_compat(file, argp); | |
b24e7ad1 TI |
163 | #ifdef CONFIG_X86_X32 |
164 | case SNDRV_TIMER_IOCTL_STATUS_X32: | |
165 | return snd_timer_user_status_x32(file, argp); | |
166 | #endif /* CONFIG_X86_X32 */ | |
1da177e4 LT |
167 | } |
168 | return -ENOIOCTLCMD; | |
169 | } |