ceph/src/test/test_get_blkdev_size.cc

   1 #include <stdio.h>
   2 #include <errno.h>
   3 #include <string.h>
   4 #include <fcntl.h>
   5 #include <inttypes.h>
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8 #include "include/uuid.h"
   9 #include "common/blkdev.h"
  10
  11 int main(int argc, char **argv)
  12 {
  13         int fd, ret;
  14         int64_t size;
  15
  16         if (argc != 2) {
  17                 fprintf(stderr, "usage: %s <blkdev>\n", argv[0]);
  18                 return -1;
  19         }
  20
  21         fd = open(argv[1], O_RDONLY);
  22         if (fd < 0) {
  23                 perror("open");
  24                 return -1;
  25         }
  26
  27         ret = get_block_device_size(fd, &size);
  28         if (ret < 0) {
  29                 fprintf(stderr, "get_block_device_size: %s\n", strerror(-ret));
  30                 return -1;
  31         }
  32
  33         fprintf(stdout, "%" PRId64, size);
  34
  35         return 0;
  36 }