gfiber-tools/raw_read.c

#include <fcntl.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>

int main(int argc, char **argv) {
  int infd;
  char buf[256];
  int len, wlen;

  int outfd = open("out", O_WRONLY | O_CREAT | O_TRUNC, 0644);
  if (outfd < 0) {
    perror("open out");
    return 1;
  }

  while (1) {
    infd = open("/tmp/Fifo_bdt_tiaudio", O_RDONLY);
    if (infd == -1) {
      perror("open /tmp/Fifo_bdt_tiaudio");
      return 1;
    }

    len = read(infd, buf, 256);
    if (len != 0) {
      printf("read %d bytes\n", len);
      wlen = write(outfd, &buf, len);
      if (len != wlen) {
        printf("write error, wrote %d/%d\n", wlen, len);
      }
    }
    close(infd);
  }
  return 0;
}