543537bd92
This patch creates a new kstrdup library function and changes the "local" implementations in several places to use this function. Most of the changes come from the sound and net subsystems. The sound part had already been acknowledged by Takashi Iwai and the net part by David S. Miller. I left UML alone for now because I would need more time to read the code carefully before making changes there. Signed-off-by: Paulo Marques <pmarques@grupopie.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*
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* Information interface for ALSA driver
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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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 <sound/core.h>
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#include <sound/minors.h>
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#include <sound/info.h>
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#include <sound/version.h>
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#include <linux/utsname.h>
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#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
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/*
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* OSS compatible part
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*/
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static DECLARE_MUTEX(strings);
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static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
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static snd_info_entry_t *snd_sndstat_proc_entry;
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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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snd_assert(dev >= 0 && dev < SNDRV_OSS_INFO_DEV_COUNT, return -ENXIO);
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snd_assert(num >= 0 && num < SNDRV_CARDS, return -ENXIO);
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down(&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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up(&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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up(&strings);
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return 0;
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}
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extern void snd_card_info_read_oss(snd_info_buffer_t * buffer);
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static int snd_sndstat_show_strings(snd_info_buffer_t * 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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down(&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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up(&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(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
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{
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snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n");
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snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
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system_utsname.sysname,
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system_utsname.nodename,
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system_utsname.release,
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system_utsname.version,
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system_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 snd_info_minor_register(void)
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{
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snd_info_entry_t *entry;
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memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
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if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) {
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entry->c.text.read_size = 2048;
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entry->c.text.read = snd_sndstat_proc_read;
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if (snd_info_register(entry) < 0) {
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snd_info_free_entry(entry);
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entry = NULL;
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}
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}
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snd_sndstat_proc_entry = entry;
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return 0;
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}
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int snd_info_minor_unregister(void)
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{
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if (snd_sndstat_proc_entry) {
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snd_info_unregister(snd_sndstat_proc_entry);
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snd_sndstat_proc_entry = NULL;
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}
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return 0;
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}
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#endif /* CONFIG_SND_OSSEMUL */
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