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/*
* Advanced Linux Sound Architecture Control Program - Support routines
* 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 <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <alsa/asoundlib.h>
#include "alsactl.h"
int file_map(const char *filename, char **buf, size_t *bufsize)
{
struct stat stats;
int fd;
fd = open(filename, O_RDONLY);
if (fd < 0) {
return -1;
}
if (fstat(fd, &stats) < 0) {
close(fd);
return -1;
}
*buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (*buf == MAP_FAILED) {
close(fd);
return -1;
}
*bufsize = stats.st_size;
close(fd);
return 0;
}
void file_unmap(void *buf, size_t bufsize)
{
munmap(buf, bufsize);
}
size_t line_width(const char *buf, size_t bufsize, size_t pos)
{
int esc = 0;
size_t count;
for (count = pos; count < bufsize; count++) {
if (!esc && buf[count] == '\n')
break;
esc = buf[count] == '\\';
}
return count - pos;
}
void initfailed(int cardnumber, const char *reason)
{
int fp;
char *str;
if (statefile == NULL)
return;
if (snd_card_get_name(cardnumber, &str) < 0)
return;
fp = open(statefile, O_WRONLY|O_CREAT|O_APPEND, 0644);
write(fp, str, strlen(str));
write(fp, ":", 1);
write(fp, reason, strlen(reason));
write(fp, "\n", 1);
close(fp);
free(str);
}
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