2008-07-31 15:45:08 +02:00
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/*
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* Advanced Linux Sound Architecture Control Program - Support routines
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* Copyright (c) by Jaroslav Kysela <perex@perex.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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2017-11-14 14:28:51 +01:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2008-07-31 15:45:08 +02:00
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <ctype.h>
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#include <dirent.h>
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2013-04-05 11:51:51 +02:00
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#include <syslog.h>
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2008-07-31 15:45:08 +02:00
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include "alsactl.h"
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int file_map(const char *filename, char **buf, size_t *bufsize)
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{
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struct stat stats;
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int fd;
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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return -1;
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}
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if (fstat(fd, &stats) < 0) {
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close(fd);
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return -1;
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}
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*buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
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if (*buf == MAP_FAILED) {
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close(fd);
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return -1;
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}
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*bufsize = stats.st_size;
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close(fd);
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return 0;
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}
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void file_unmap(void *buf, size_t bufsize)
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{
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munmap(buf, bufsize);
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}
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size_t line_width(const char *buf, size_t bufsize, size_t pos)
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{
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int esc = 0;
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size_t count;
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for (count = pos; count < bufsize; count++) {
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if (!esc && buf[count] == '\n')
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break;
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esc = buf[count] == '\\';
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}
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return count - pos;
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}
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2008-08-14 16:46:27 +02:00
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2010-05-26 10:37:58 +02:00
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void initfailed(int cardnumber, const char *reason, int exitcode)
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2008-08-14 16:46:27 +02:00
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{
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int fp;
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char *str;
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2010-05-26 10:37:58 +02:00
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char sexitcode[16];
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2008-08-14 16:46:27 +02:00
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if (statefile == NULL)
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return;
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if (snd_card_get_name(cardnumber, &str) < 0)
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return;
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2010-05-26 10:37:58 +02:00
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sprintf(sexitcode, "%i", exitcode);
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2008-08-14 16:46:27 +02:00
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fp = open(statefile, O_WRONLY|O_CREAT|O_APPEND, 0644);
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2021-03-05 21:43:45 +01:00
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(void)write(fp, str, strlen(str));
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(void)write(fp, ":", 1);
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(void)write(fp, reason, strlen(reason));
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(void)write(fp, ":", 1);
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(void)write(fp, sexitcode, strlen(sexitcode));
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(void)write(fp, "\n", 1);
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2008-08-14 16:46:27 +02:00
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close(fp);
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free(str);
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}
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2013-04-05 11:51:51 +02:00
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static void syslog_(int prio, const char *fcn, long line,
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const char *fmt, va_list ap)
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{
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char buf[1024];
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2020-06-20 08:46:53 +02:00
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snprintf(buf, sizeof(buf), "%s: %s:%ld: ", command, fcn, line);
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2013-04-05 11:51:51 +02:00
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buf[sizeof(buf)-1] = '\0';
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vsnprintf(buf + strlen(buf), sizeof(buf)-strlen(buf), fmt, ap);
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buf[sizeof(buf)-1] = '\0';
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2020-05-14 19:41:40 +02:00
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syslog(prio, "%s", buf);
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2013-04-05 11:51:51 +02:00
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}
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void info_(const char *fcn, long line, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (use_syslog) {
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syslog_(LOG_INFO, fcn, line, fmt, ap);
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} else {
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fprintf(stdout, "%s: %s:%ld: ", command, fcn, line);
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vfprintf(stdout, fmt, ap);
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putc('\n', stdout);
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}
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va_end(ap);
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}
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void error_(const char *fcn, long line, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (use_syslog) {
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syslog_(LOG_ERR, fcn, line, fmt, ap);
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} else {
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fprintf(stderr, "%s: %s:%ld: ", command, fcn, line);
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vfprintf(stderr, fmt, ap);
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putc('\n', stderr);
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}
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va_end(ap);
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}
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void cerror_(const char *fcn, long line, int cond, const char *fmt, ...)
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{
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va_list ap;
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if (!cond && !debugflag)
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return;
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2013-12-29 20:03:21 +01:00
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va_start(ap, fmt);
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2013-04-05 11:51:51 +02:00
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if (use_syslog) {
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syslog_(LOG_ERR, fcn, line, fmt, ap);
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} else {
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fprintf(stderr, "%s: %s:%ld: ", command, fcn, line);
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vfprintf(stderr, fmt, ap);
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putc('\n', stderr);
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}
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2014-09-24 10:52:17 +02:00
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va_end(ap);
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2013-04-05 11:51:51 +02:00
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}
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void dbg_(const char *fcn, long line, const char *fmt, ...)
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{
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va_list ap;
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if (!debugflag)
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return;
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2013-12-29 20:03:21 +01:00
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va_start(ap, fmt);
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2013-04-05 11:51:51 +02:00
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if (use_syslog) {
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syslog_(LOG_DEBUG, fcn, line, fmt, ap);
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} else {
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fprintf(stderr, "%s: %s:%ld: ", command, fcn, line);
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vfprintf(stderr, fmt, ap);
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putc('\n', stderr);
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}
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2014-09-24 10:52:17 +02:00
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va_end(ap);
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2013-04-05 11:51:51 +02:00
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}
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2020-05-14 19:09:45 +02:00
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void error_handler(const char *file, int line, const char *function, int err, const char *fmt, ...)
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{
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char buf[2048];
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va_list arg;
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va_start(arg, fmt);
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vsnprintf(buf, sizeof(buf), fmt, arg);
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va_end(arg);
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if (use_syslog)
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syslog(LOG_ERR, "alsa-lib %s:%i:(%s) %s%s%s\n", file, line, function,
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buf, err ? ": " : "", err ? snd_strerror(err) : "");
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else
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fprintf(stderr, "alsa-lib %s:%i:(%s) %s%s%s\n", file, line, function,
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buf, err ? ": " : "", err ? snd_strerror(err) : "");
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}
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2021-03-07 19:58:33 +01:00
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int load_configuration(const char *file, snd_config_t **top, int *open_failed)
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{
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snd_config_t *config;
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snd_input_t *in;
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int err, stdio_flag, lock_fd = -EINVAL;
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*top = NULL;
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if (open_failed)
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*open_failed = 0;
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err = snd_config_top(&config);
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if (err < 0) {
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error("snd_config_top error: %s", snd_strerror(err));
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return err;
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}
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stdio_flag = !strcmp(file, "-");
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if (stdio_flag) {
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err = snd_input_stdio_attach(&in, stdin, 0);
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} else {
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lock_fd = state_lock(file, 10);
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err = lock_fd >= 0 ? snd_input_stdio_open(&in, file, "r") : lock_fd;
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}
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if (err < 0) {
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if (open_failed)
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*open_failed = 1;
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goto out;
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}
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err = snd_config_load(config, in);
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snd_input_close(in);
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if (lock_fd >= 0)
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state_unlock(lock_fd, file);
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if (err < 0) {
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error("snd_config_load error: %s", snd_strerror(err));
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out:
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snd_config_delete(config);
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snd_config_update_free_global();
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return err;
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} else {
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*top = config;
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return 0;
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}
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}
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2021-03-10 20:06:24 +01:00
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void snd_card_iterator_init(struct snd_card_iterator *iter, int cardno)
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{
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iter->card = cardno;
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iter->single = cardno >= 0;
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iter->first = true;
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iter->name[0] = '\0';
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}
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int snd_card_iterator_sinit(struct snd_card_iterator *iter, const char *cardname)
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{
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int cardno = -1;
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if (cardname) {
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cardno = snd_card_get_index(cardname);
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if (cardno < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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return cardno;
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}
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}
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snd_card_iterator_init(iter, cardno);
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return 0;
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}
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const char *snd_card_iterator_next(struct snd_card_iterator *iter)
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{
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if (iter->single) {
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if (iter->first) {
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iter->first = false;
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goto retval;
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}
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return NULL;
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}
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if (snd_card_next(&iter->card) < 0) {
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if (!ignore_nocards && iter->first)
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error("No soundcards found...");
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return NULL;
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}
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iter->first = false;
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if (iter->card < 0)
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return NULL;
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retval:
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snprintf(iter->name, sizeof(iter->name), "hw:%d", iter->card);
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return (const char *)iter->name;
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}
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int snd_card_iterator_error(struct snd_card_iterator *iter)
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{
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return iter->first ? (ignore_nocards ? 0 : -ENODEV) : 0;
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}
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