libblkid/src/getsize.c

   1 /*
   2  * getsize.c --- get the size of a partition.
   3  *
   4  * Copyright (C) 1995, 1995 Theodore Ts'o.
   5  * Copyright (C) 2010 Karel Zak <kzak@redhat.com>
   6  *
   7  * %Begin-Header%
   8  * This file may be redistributed under the terms of the
   9  * GNU Lesser General Public License.
  10  * %End-Header%
  11  */
  12
  13 #include <stdio.h>
  14 #include <sys/stat.h>
  15 #include <sys/types.h>
  16
  17 #include "blkidP.h"
  18
  19 /**
  20  * blkid_get_dev_size:
  21  * @fd: file descriptor
  22  *
  23  * Returns: size (in bytes) of the block device or size of the regular file or 0.
  24  */
  25 blkid_loff_t blkid_get_dev_size(int fd)
  26 {
  27         unsigned long long bytes;
  28
  29         if (blkdev_get_size(fd, &bytes))
  30                 return 0;
  31
  32         return bytes;
  33 }
  34