1 files changed, 106 insertions, 0 deletions
diff --git a/sound/core/info_oss.c b/sound/core/info_oss.c
new file mode 100644
index 000000000..ebc714b2f
--- /dev/null
+++ b/sound/core/info_oss.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Information interface for ALSA driver
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/string.h>
+#include <linux/export.h>
+#include <sound/core.h>
+#include <sound/minors.h>
+#include <sound/info.h>
+#include <linux/utsname.h>
+#include <linux/mutex.h>
+
+/*
+ *  OSS compatible part
+ */
+
+static DEFINE_MUTEX(strings);
+static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
+
+int snd_oss_info_register(int dev, int num, char *string)
+{
+	char *x;
+
+	if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
+		return -ENXIO;
+	if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
+		return -ENXIO;
+	mutex_lock(&strings);
+	if (string == NULL) {
+		x = snd_sndstat_strings[num][dev];
+		kfree(x);
+		x = NULL;
+	} else {
+		x = kstrdup(string, GFP_KERNEL);
+		if (x == NULL) {
+			mutex_unlock(&strings);
+			return -ENOMEM;
+		}
+	}
+	snd_sndstat_strings[num][dev] = x;
+	mutex_unlock(&strings);
+	return 0;
+}
+EXPORT_SYMBOL(snd_oss_info_register);
+
+static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
+{
+	int idx, ok = -1;
+	char *str;
+
+	snd_iprintf(buf, "\n%s:", id);
+	mutex_lock(&strings);
+	for (idx = 0; idx < SNDRV_CARDS; idx++) {
+		str = snd_sndstat_strings[idx][dev];
+		if (str) {
+			if (ok < 0) {
+				snd_iprintf(buf, "\n");
+				ok++;
+			}
+			snd_iprintf(buf, "%i: %s\n", idx, str);
+		}
+	}
+	mutex_unlock(&strings);
+	if (ok < 0)
+		snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
+	return ok;
+}
+
+static void snd_sndstat_proc_read(struct snd_info_entry *entry,
+				  struct snd_info_buffer *buffer)
+{
+	snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
+	snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
+		    init_utsname()->sysname,
+		    init_utsname()->nodename,
+		    init_utsname()->release,
+		    init_utsname()->version,
+		    init_utsname()->machine);
+	snd_iprintf(buffer, "Config options: 0\n");
+	snd_iprintf(buffer, "\nInstalled drivers: \n");
+	snd_iprintf(buffer, "Type 10: ALSA emulation\n");
+	snd_iprintf(buffer, "\nCard config: \n");
+	snd_card_info_read_oss(buffer);
+	snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
+	snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
+	snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
+	snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
+	snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
+}
+
+int __init snd_info_minor_register(void)
+{
+	struct snd_info_entry *entry;
+
+	memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
+	entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
+					     snd_oss_root);
+	if (!entry)
+		return -ENOMEM;
+	entry->c.text.read = snd_sndstat_proc_read;
+	return snd_info_register(entry); /* freed in error path */
+}