@@ -25,7 +25,7 @@
#include <sound/asound.h>
/** version of the sequencer */
-#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION (1, 0, 1)
+#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION (1, 0, 2)
/**
* definition of sequencer event types
@@ -357,7 +357,8 @@ struct snd_seq_client_info {
unsigned char event_filter[32]; /* event filter bitmap */
int num_ports; /* RO: number of ports */
int event_lost; /* number of lost events */
- char reserved[64]; /* for future use */
+ int owner; /* RO: card number[kernel] / PID[user] */
+ char reserved[64 - sizeof(int)]; /* for future use */
};
@@ -364,6 +364,7 @@ static int snd_seq_open(struct inode *inode, struct file *file)
/* fill client data */
user->file = file;
sprintf(client->name, "Client-%d", c);
+ client->data.user.owner = get_pid(task_pid(current));
/* make others aware this new client */
snd_seq_system_client_ev_client_start(c);
@@ -380,6 +381,7 @@ static int snd_seq_release(struct inode *inode, struct file *file)
seq_free_client(client);
if (client->data.user.fifo)
snd_seq_fifo_delete(&client->data.user.fifo);
+ put_pid(client->data.user.owner);
kfree(client);
}
@@ -1197,6 +1199,21 @@ static void get_client_info(struct snd_seq_client *cptr,
info->event_lost = cptr->event_lost;
memcpy(info->event_filter, cptr->event_filter, 32);
info->num_ports = cptr->num_ports;
+
+ switch (cptr->type) {
+ case USER_CLIENT:
+ info->owner = pid_vnr(cptr->data.user.owner);
+ break;
+
+ case KERNEL_CLIENT:
+ info->owner = cptr->data.kernel.card ? cptr->data.kernel.card->number : -1;
+ break;
+
+ default:
+ info->owner = -1;
+ break;
+ }
+
memset(info->reserved, 0, sizeof(info->reserved));
}
@@ -2271,6 +2288,7 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index,
client->accept_input = 1;
client->accept_output = 1;
+ client->data.kernel.card = card;
va_start(args, name_fmt);
vsnprintf(client->name, sizeof(client->name), name_fmt, args);
@@ -33,6 +33,7 @@
struct snd_seq_user_client {
struct file *file; /* file struct of client */
/* ... */
+ struct pid* owner;
/* fifo */
struct snd_seq_fifo *fifo; /* queue for incoming events */
@@ -41,6 +42,7 @@ struct snd_seq_user_client {
struct snd_seq_kernel_client {
/* ... */
+ struct snd_card* card;
};