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#include <sys/param.h>
#include <sys/disklabel.h>
#if __FreeBSD_version < 500000
#include <sys/diskslice.h>
#include <sys/stat.h>
#else
#include <sys/disk.h>
#include <errno.h>
#endif
#include <stddef.h>
#include "common.h"
unsigned int
sys_bsd_sectorsize(int fd)
{
#ifdef DIOCGSECTORSIZE
;{
unsigned int d;
if (ioctl(fd, DIOCGSECTORSIZE, &d) == 0)
return d;
}
#endif
#ifdef DIOCGDINFO
;{
struct disklabel dl;
if (ioctl(fd, DIOCGDINFO, &dl) == 0)
return dl.d_secsize;
}
#endif
#ifdef DIOCGSLICEINFO
;{
struct diskslices dss;
if (ioctl(fd, DIOCGSLICEINFO, &dss) == 0)
return dss.dss_secsize;
}
#endif
return 0;
}
int
sys_bsd_getsectors(int fd, unsigned long *s)
{
/* XXX */
struct disklabel dl;
#if defined(DIOCGMEDIASIZE) && defined(DIOCGSECTORSIZE)
;{
off_t fullsize;
unsigned sectsize;
if (ioctl(fd, DIOCGMEDIASIZE, &fullsize) == 0 &&
ioctl(fd, DIOCGSECTORSIZE, §size) == 0)
{
*s = fullsize / sectsize;
return 0;
}
}
#endif
#ifdef DIOCGSLICEINFO
/* XXX it is somehow ugly, but seems to work on 4.x. */
;{
struct diskslices dss;
struct stat st;
if (ioctl(fd, DIOCGSLICEINFO, &dss) == 0 &&
fstat(fd, &st) == 0)
{
int slice = 31 & (st.st_rdev >> 16);
/* If it have disklabel, fall to disklabel case,
* because it shows more exact info.
*/
if (slice != WHOLE_DISK_SLICE &&
dss.dss_slices[slice].ds_label != NULL &&
ioctl(fd, DIOCGDINFO, &dl) == 0) {
*s = (unsigned long) dl.d_secperunit;
return 0;
}
*s = dss.dss_slices[slice].ds_size;
return 0;
}
}
#endif
#ifdef DIOCGDINFO
/* Fallback method. */
if (ioctl(fd, DIOCGDINFO, &dl) == 0) {
*s = (unsigned long) dl.d_secperunit;
return 0;
}
#endif
return -1;
}
int
sys_bsd_ptsync(int fd)
{
#ifdef DIOCSYNCSLICEINFO
return ioctl(fd, DIOCSYNCSLICEINFO, NULL);
#else
/* XXX I suppose here GEOM systems which:
* 1) Don't allow writing to raw disk if it is mounted anywhere,
* 2) Automatically update GEOM structures after writing to disk.
* Hence, no explicit syncing is required.
*/
return 0;
#endif
}
int
sys_bsd_getgeometry(int fd, struct hd_geometry *g)
{
/* XXX */
struct disklabel dl;
#ifdef DIOCGDINFO
if (ioctl(fd, DIOCGDINFO, &dl) < 0)
#endif
return -1;
g->cylinders = dl.d_ncylinders;
g->heads = dl.d_ntracks;
g->sectors = dl.d_nsectors;
return 0;
}
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