~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/core/info_oss.c

Version: ~ [ linux-5.6-rc1 ] ~ [ linux-5.5.2 ] ~ [ linux-5.4.17 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.102 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.170 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.213 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.213 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *  Information interface for ALSA driver
  3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  4  *
  5  *
  6  *   This program is free software; you can redistribute it and/or modify
  7  *   it under the terms of the GNU General Public License as published by
  8  *   the Free Software Foundation; either version 2 of the License, or
  9  *   (at your option) any later version.
 10  *
 11  *   This program is distributed in the hope that it will be useful,
 12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14  *   GNU General Public License for more details.
 15  *
 16  *   You should have received a copy of the GNU General Public License
 17  *   along with this program; if not, write to the Free Software
 18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 19  *
 20  */
 21 
 22 #include <linux/slab.h>
 23 #include <linux/time.h>
 24 #include <linux/string.h>
 25 #include <linux/export.h>
 26 #include <sound/core.h>
 27 #include <sound/minors.h>
 28 #include <sound/info.h>
 29 #include <linux/utsname.h>
 30 #include <linux/mutex.h>
 31 
 32 /*
 33  *  OSS compatible part
 34  */
 35 
 36 static DEFINE_MUTEX(strings);
 37 static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
 38 
 39 int snd_oss_info_register(int dev, int num, char *string)
 40 {
 41         char *x;
 42 
 43         if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
 44                 return -ENXIO;
 45         if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
 46                 return -ENXIO;
 47         mutex_lock(&strings);
 48         if (string == NULL) {
 49                 if ((x = snd_sndstat_strings[num][dev]) != NULL) {
 50                         kfree(x);
 51                         x = NULL;
 52                 }
 53         } else {
 54                 x = kstrdup(string, GFP_KERNEL);
 55                 if (x == NULL) {
 56                         mutex_unlock(&strings);
 57                         return -ENOMEM;
 58                 }
 59         }
 60         snd_sndstat_strings[num][dev] = x;
 61         mutex_unlock(&strings);
 62         return 0;
 63 }
 64 EXPORT_SYMBOL(snd_oss_info_register);
 65 
 66 static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
 67 {
 68         int idx, ok = -1;
 69         char *str;
 70 
 71         snd_iprintf(buf, "\n%s:", id);
 72         mutex_lock(&strings);
 73         for (idx = 0; idx < SNDRV_CARDS; idx++) {
 74                 str = snd_sndstat_strings[idx][dev];
 75                 if (str) {
 76                         if (ok < 0) {
 77                                 snd_iprintf(buf, "\n");
 78                                 ok++;
 79                         }
 80                         snd_iprintf(buf, "%i: %s\n", idx, str);
 81                 }
 82         }
 83         mutex_unlock(&strings);
 84         if (ok < 0)
 85                 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
 86         return ok;
 87 }
 88 
 89 static void snd_sndstat_proc_read(struct snd_info_entry *entry,
 90                                   struct snd_info_buffer *buffer)
 91 {
 92         snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
 93         snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
 94                     init_utsname()->sysname,
 95                     init_utsname()->nodename,
 96                     init_utsname()->release,
 97                     init_utsname()->version,
 98                     init_utsname()->machine);
 99         snd_iprintf(buffer, "Config options: 0\n");
100         snd_iprintf(buffer, "\nInstalled drivers: \n");
101         snd_iprintf(buffer, "Type 10: ALSA emulation\n");
102         snd_iprintf(buffer, "\nCard config: \n");
103         snd_card_info_read_oss(buffer);
104         snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
105         snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
106         snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
107         snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
108         snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
109 }
110 
111 int __init snd_info_minor_register(void)
112 {
113         struct snd_info_entry *entry;
114 
115         memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
116         entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
117                                              snd_oss_root);
118         if (!entry)
119                 return -ENOMEM;
120         entry->c.text.read = snd_sndstat_proc_read;
121         return snd_info_register(entry); /* freed in error path */
122 }
123 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp