Merge "img2simg: Add support for converting holes to "don't care" chunks"

#endif

void usage() {

  fprintf(stderr, "Usage: img2simg <raw_image_file> <sparse_image_file> [<block_size>]\n");

  fprintf(stderr, "Usage: img2simg [-s] <raw_image_file> <sparse_image_file> [<block_size>]\n");

}

int main(int argc, char* argv[]) {

  char *arg_in;

  char *arg_out;

  enum sparse_read_mode mode = SPARSE_READ_MODE_NORMAL;

  int extra;

  int in;

  int opt;

  int out;

  int ret;

  struct sparse_file* s;

  unsigned int block_size = 4096;

  off64_t len;

  if (argc < 3 || argc > 4) {

  while ((opt = getopt(argc, argv, "s")) != -1) {

    switch (opt) {

      case 's':

        mode = SPARSE_READ_MODE_HOLE;

        break;

      default:

        usage();

        exit(-1);

    }

  }

  extra = argc - optind;

  if (extra < 2 || extra > 3) {

    usage();

    exit(-1);

  }

  if (argc == 4) {

    block_size = atoi(argv[3]);

  if (extra == 3) {

    block_size = atoi(argv[optind + 2]);

  }

  if (block_size < 1024 || block_size % 4 != 0) {

    exit(-1);

  }

  if (strcmp(argv[1], "-") == 0) {

  arg_in = argv[optind];

  if (strcmp(arg_in, "-") == 0) {

    in = STDIN_FILENO;

  } else {

    in = open(argv[1], O_RDONLY | O_BINARY);

    in = open(arg_in, O_RDONLY | O_BINARY);

    if (in < 0) {

      fprintf(stderr, "Cannot open input file %s\n", argv[1]);

      fprintf(stderr, "Cannot open input file %s\n", arg_in);

      exit(-1);

    }

  }

  if (strcmp(argv[2], "-") == 0) {

  arg_out = argv[optind + 1];

  if (strcmp(arg_out, "-") == 0) {

    out = STDOUT_FILENO;

  } else {

    out = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);

    out = open(arg_out, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);

    if (out < 0) {

      fprintf(stderr, "Cannot open output file %s\n", argv[2]);

      fprintf(stderr, "Cannot open output file %s\n", arg_out);

      exit(-1);

    }

  }

  }

  sparse_file_verbose(s);

  ret = sparse_file_read(s, in, SPARSE_READ_MODE_NORMAL, false);

  ret = sparse_file_read(s, in, mode, false);

  if (ret) {

    fprintf(stderr, "Failed to read file\n");

    exit(-1);