| /* |
| * 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 exitcode) |
| { |
| int fp; |
| char *str; |
| char sexitcode[16]; |
| |
| if (statefile == NULL) |
| return; |
| if (snd_card_get_name(cardnumber, &str) < 0) |
| return; |
| sprintf(sexitcode, "%i", exitcode); |
| 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, ":", 1); |
| write(fp, sexitcode, strlen(sexitcode)); |
| write(fp, "\n", 1); |
| close(fp); |
| free(str); |
| } |