1 files changed, 122 insertions, 0 deletions
diff --git a/sound/core/seq/seq_compat.c b/sound/core/seq/seq_compat.c
new file mode 100644
index 000000000..54723566c
--- /dev/null
+++ b/sound/core/seq/seq_compat.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   32bit -> 64bit ioctl wrapper for sequencer API
+ *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
+ */
+
+/* This file included from seq.c */
+
+#include <linux/compat.h>
+#include <linux/slab.h>
+
+struct snd_seq_port_info32 {
+	struct snd_seq_addr addr;	/* client/port numbers */
+	char name[64];			/* port name */
+
+	u32 capability;	/* port capability bits */
+	u32 type;		/* port type bits */
+	s32 midi_channels;		/* channels per MIDI port */
+	s32 midi_voices;		/* voices per MIDI port */
+	s32 synth_voices;		/* voices per SYNTH port */
+
+	s32 read_use;			/* R/O: subscribers for output (from this port) */
+	s32 write_use;			/* R/O: subscribers for input (to this port) */
+
+	u32 kernel;			/* reserved for kernel use (must be NULL) */
+	u32 flags;		/* misc. conditioning */
+	unsigned char time_queue;	/* queue # for timestamping */
+	char reserved[59];		/* for future use */
+};
+
+static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
+					struct snd_seq_port_info32 __user *data32)
+{
+	int err = -EFAULT;
+	struct snd_seq_port_info *data;
+
+	data = kmalloc(sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	if (copy_from_user(data, data32, sizeof(*data32)) ||
+	    get_user(data->flags, &data32->flags) ||
+	    get_user(data->time_queue, &data32->time_queue))
+		goto error;
+	data->kernel = NULL;
+
+	err = snd_seq_kernel_client_ctl(client->number, cmd, data);
+	if (err < 0)
+		goto error;
+
+	if (copy_to_user(data32, data, sizeof(*data32)) ||
+	    put_user(data->flags, &data32->flags) ||
+	    put_user(data->time_queue, &data32->time_queue))
+		err = -EFAULT;
+
+ error:
+	kfree(data);
+	return err;
+}
+
+
+
+/*
+ */
+
+enum {
+	SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
+	SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
+	SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
+	SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
+	SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
+};
+
+static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct snd_seq_client *client = file->private_data;
+	void __user *argp = compat_ptr(arg);
+
+	if (snd_BUG_ON(!client))
+		return -ENXIO;
+
+	switch (cmd) {
+	case SNDRV_SEQ_IOCTL_PVERSION:
+	case SNDRV_SEQ_IOCTL_CLIENT_ID:
+	case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
+	case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
+	case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
+	case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
+	case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
+	case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
+	case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
+	case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
+	case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
+	case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
+	case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
+	case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
+	case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
+	case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
+	case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
+	case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
+	case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
+	case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
+	case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
+	case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
+	case SNDRV_SEQ_IOCTL_QUERY_SUBS:
+	case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
+	case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
+	case SNDRV_SEQ_IOCTL_RUNNING_MODE:
+		return snd_seq_ioctl(file, cmd, arg);
+	case SNDRV_SEQ_IOCTL_CREATE_PORT32:
+		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
+	case SNDRV_SEQ_IOCTL_DELETE_PORT32:
+		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
+	case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
+		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
+	case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
+		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
+	case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
+		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
+	}
+	return -ENOIOCTLCMD;
+}