linux-stable/sound/core/info_oss.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
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>
2019-05-30 11:26:35 -07:00

107 lines
2.8 KiB
C

// 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) {
if ((x = snd_sndstat_strings[num][dev]) != NULL) {
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 */
}