1 files changed, 119 insertions, 0 deletions

diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c
new file mode 100644
index 000000000000..9fbc3957a22d
--- /dev/null
+++ b/sound/core/timer_compat.c
@@ -0,0 +1,119 @@
+/*
+ *   32bit -> 64bit ioctl wrapper for timer API
+ *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+/* This file included from timer.c */
+
+#include <linux/compat.h>
+
+struct sndrv_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_info_compat(struct file *file,
+                                      struct sndrv_timer_info32 __user *_info)
+{
+        snd_timer_user_t *tu;
+        struct sndrv_timer_info32 info;
+        snd_timer_t *t;
+
+        tu = file->private_data;
+        snd_assert(tu->timeri != NULL, return -ENXIO);
+        t = tu->timeri->timer;
+        snd_assert(t != NULL, return -ENXIO);
+        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;
+        strlcpy(info.id, t->id, sizeof(info.id));
+        strlcpy(info.name, t->name, sizeof(info.name));
+        info.resolution = t->hw.resolution;
+        if (copy_to_user(_info, &info, sizeof(*_info)))
+                return -EFAULT;
+        return 0;
+}
+
+struct sndrv_timer_status32 {
+        struct compat_timespec tstamp;
+        u32 resolution;
+        u32 lost;
+        u32 overrun;
+        u32 queue;
+        unsigned char reserved[64];
+};
+
+static int snd_timer_user_status_compat(struct file *file,
+                                        struct sndrv_timer_status32 __user *_status)
+{
+        snd_timer_user_t *tu;
+        snd_timer_status_t status;
+        
+        tu = file->private_data;
+        snd_assert(tu->timeri != NULL, return -ENXIO);
+        memset(&status, 0, sizeof(status));
+        status.tstamp = tu->tstamp;
+        status.resolution = snd_timer_resolution(tu->timeri);
+        status.lost = tu->timeri->lost;
+        status.overrun = tu->overrun;
+        spin_lock_irq(&tu->qlock);
+        status.queue = tu->qused;
+        spin_unlock_irq(&tu->qlock);
+        if (copy_to_user(_status, &status, sizeof(status)))
+                return -EFAULT;
+        return 0;
+}
+
+/*
+ */
+
+enum {
+        SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct sndrv_timer_info32),
+        SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct sndrv_timer_status32),
+};
+
+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:
+        case SNDRV_TIMER_IOCTL_GINFO:
+        case SNDRV_TIMER_IOCTL_GPARAMS:
+        case SNDRV_TIMER_IOCTL_GSTATUS:
+        case SNDRV_TIMER_IOCTL_SELECT:
+        case SNDRV_TIMER_IOCTL_PARAMS:
+        case SNDRV_TIMER_IOCTL_START:
+        case SNDRV_TIMER_IOCTL_STOP:
+        case SNDRV_TIMER_IOCTL_CONTINUE:
+        case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
+                return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
+        case SNDRV_TIMER_IOCTL_INFO32:
+                return snd_timer_user_info_compat(file, argp);
+        case SNDRV_TIMER_IOCTL_STATUS32:
+                return snd_timer_user_status_compat(file, argp);
+        }
+        return -ENOIOCTLCMD;
+}