cregit-Linux how code gets into the kernel

Release 4.13 sound/core/info_oss.c

Directory: sound/core
/*
 *  Information interface for ALSA driver
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   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
 *
 */

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela11177.62%125.00%
Takashi Iwai2819.58%125.00%
Ingo Molnar32.10%125.00%
Paulo Marques10.70%125.00%
Total143100.00%4100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela12396.85%133.33%
Takashi Iwai21.57%133.33%
Ingo Molnar21.57%133.33%
Total127100.00%3100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela11485.71%250.00%
Serge E. Hallyn1511.28%125.00%
Takashi Iwai43.01%125.00%
Total133100.00%4100.00%


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 */ }

Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela4877.42%250.00%
Takashi Iwai1422.58%250.00%
Total62100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela43283.72%538.46%
Takashi Iwai5310.27%430.77%
Serge E. Hallyn152.91%17.69%
Ingo Molnar91.74%17.69%
Paulo Marques40.78%17.69%
Paul Gortmaker30.58%17.69%
Total516100.00%13100.00%
Directory: sound/core
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