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#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include "common.h"
int disksize(int fd, unsigned long long *sectors) {
int err;
long sz;
long long b;
err = ioctl(fd, BLKGETSIZE, &sz);
if (err) {
sz = 0;
if (errno != EFBIG)
return err;
}
err = ioctl(fd, BLKGETSIZE64, &b);
if (err || b == 0 || b == sz)
*sectors = sz;
else
*sectors = (b >> 9);
return 0;
}
int
is_probably_full_disk(char *name) {
#ifdef HDIO_GETGEO
struct hd_geometry geometry;
int fd, i = 0;
fd = open(name, O_RDONLY);
if (fd >= 0) {
i = ioctl(fd, HDIO_GETGEO, &geometry);
close(fd);
}
if (i==0)
return (fd >= 0 && geometry.start == 0);
#endif
/*
* The "silly heuristic" is still sexy for us, because
* for example Xen doesn't implement HDIO_GETGEO for virtual
* block devices (/dev/xvda).
*
* -- kzak@redhat.com (23-Feb-2006)
*/
while (*name)
name++;
return !isdigit(name[-1]);
}
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