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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $Id$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <err.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
#include <sys/queue.h>
#include "libdisk.h"
#define DOSPTYP_EXTENDED 5
#define DOSPTYP_ONTRACK 84
struct disk *
Open_Disk(char *name)
{
return Int_Open_Disk(name,0);
}
struct disk *
Int_Open_Disk(char *name, u_long size)
{
int i,fd;
struct diskslices ds;
char device[64];
struct disk *d;
strcpy(device,"/dev/r");
strcat(device,name);
fd = open(device,O_RDONLY);
if (fd < 0) {
warn("open(%s) failed",device);
return 0;
}
i = ioctl(fd,DIOCGSLICEINFO,&ds);
if (i < 0) {
warn("DIOCSLICEINFO(%s) failed",device);
close(fd);
return 0;
}
d = (struct disk *)malloc(sizeof *d);
if(!d) err(1,"malloc failed");
memset(d,0,sizeof *d);
d->name = strdup(name);
if (!size)
size = ds.dss_slices[WHOLE_DISK_SLICE].ds_size;
Add_Chunk(d, 0, size, name,whole,0,0);
for(i=2;i<ds.dss_nslices;i++) {
char sname[20];
chunk_e ce;
u_long flags=0;
int subtype=0;
if (! ds.dss_slices[i].ds_size)
continue;
sprintf(sname,"%ss%d",name,i-1);
switch (ds.dss_slices[i].ds_type) {
case 0xa5:
ce = freebsd;
break;
case 0x1:
case 0x6:
ce = fat;
break;
case DOSPTYP_EXTENDED:
ce = extended;
break;
default:
ce = foo;
subtype = -ds.dss_slices[i].ds_type;
break;
}
flags |= CHUNK_ALIGN;
Add_Chunk(d,ds.dss_slices[i].ds_offset,
ds.dss_slices[i].ds_size, sname,ce,subtype,flags);
if (ds.dss_slices[i].ds_type == 0xa5) {
struct disklabel *dl;
int j;
dl = read_disklabel(fd,
ds.dss_slices[i].ds_offset + LABELSECTOR);
if(dl) {
for(j=0; j < dl->d_npartitions; j++) {
char pname[20];
sprintf(pname,"%s%c",sname,j+'a');
if (j == 2)
continue;
if (!dl->d_partitions[j].p_size)
continue;
Add_Chunk(d,
dl->d_partitions[j].p_offset,
dl->d_partitions[j].p_size,
pname,part,0,0);
}
}
free(dl);
}
}
close(fd);
return d;
}
void
Debug_Disk(struct disk *d)
{
printf("Debug_Disk(%s)",d->name);
printf(" flags=%lx",d->flags);
printf(" real_geom=%lu/%lu/%lu",d->real_cyl,d->real_hd,d->real_sect);
printf(" bios_geom=%lu/%lu/%lu\n",d->bios_cyl,d->bios_hd,d->bios_sect);
Debug_Chunk(d->chunks);
}
void
Free_Disk(struct disk *d)
{
if(d->chunks)
Free_Chunk(d->chunks);
if(d->name)
free(d->name);
free(d);
}
struct disk *
Clone_Disk(struct disk *d)
{
struct disk *d2;
d2 = (struct disk*) malloc(sizeof *d2);
if(!d2) err(1,"malloc failed");
*d2 = *d;
d2->name = strdup(d2->name);
d2->chunks = Clone_Chunk(d2->chunks);
return d2;
}
void
Collapse_Disk(struct disk *d)
{
while(Collapse_Chunk(d,d->chunks))
;
}
int
Aligned(struct disk *d, u_long offset)
{
if (offset % d->bios_sect)
return 0;
return 1;
}
u_long
Prev_Aligned(struct disk *d, u_long offset)
{
return (offset / d->bios_sect) * d->bios_sect;
}
u_long
Next_Aligned(struct disk *d, u_long offset)
{
return Prev_Aligned(d,offset + d->bios_sect);
}
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