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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Information interface for ALSA driver
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/string.h>
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#include <linux/export.h>
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#include <sound/core.h>
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#include <sound/minors.h>
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#include <sound/info.h>
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#include <linux/utsname.h>
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#include <linux/mutex.h>
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/*
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* OSS compatible part
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*/
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static DEFINE_MUTEX(strings);
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static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
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int snd_oss_info_register(int dev, int num, char *string)
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{
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char *x;
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if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
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return -ENXIO;
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if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
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return -ENXIO;
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mutex_lock(&strings);
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if (string == NULL) {
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if ((x = snd_sndstat_strings[num][dev]) != NULL) {
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kfree(x);
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x = NULL;
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}
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} else {
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x = kstrdup(string, GFP_KERNEL);
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if (x == NULL) {
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mutex_unlock(&strings);
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return -ENOMEM;
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}
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}
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snd_sndstat_strings[num][dev] = x;
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mutex_unlock(&strings);
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return 0;
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}
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EXPORT_SYMBOL(snd_oss_info_register);
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static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
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{
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int idx, ok = -1;
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char *str;
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snd_iprintf(buf, "\n%s:", id);
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mutex_lock(&strings);
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for (idx = 0; idx < SNDRV_CARDS; idx++) {
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str = snd_sndstat_strings[idx][dev];
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if (str) {
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if (ok < 0) {
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snd_iprintf(buf, "\n");
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ok++;
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}
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snd_iprintf(buf, "%i: %s\n", idx, str);
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}
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}
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mutex_unlock(&strings);
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if (ok < 0)
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snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
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return ok;
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}
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static void snd_sndstat_proc_read(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
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snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
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init_utsname()->sysname,
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init_utsname()->nodename,
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init_utsname()->release,
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init_utsname()->version,
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init_utsname()->machine);
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snd_iprintf(buffer, "Config options: 0\n");
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snd_iprintf(buffer, "\nInstalled drivers: \n");
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snd_iprintf(buffer, "Type 10: ALSA emulation\n");
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snd_iprintf(buffer, "\nCard config: \n");
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snd_card_info_read_oss(buffer);
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snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
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snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
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snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
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snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
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snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
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}
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int __init snd_info_minor_register(void)
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{
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struct snd_info_entry *entry;
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memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
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entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
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snd_oss_root);
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if (!entry)
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return -ENOMEM;
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entry->c.text.read = snd_sndstat_proc_read;
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return snd_info_register(entry); /* freed in error path */
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}
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