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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: disk.c,v 1.3 1995/04/29 04:00:55 phk Exp $
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <err.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/diskslice.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;
if (Add_Chunk(d, 0, size, name,whole,0,0))
warn("Failed to add 'whole' chunk");
if (ds.dss_slices[COMPATIBILITY_SLICE].ds_offset)
if (Add_Chunk(d, 0, 1, "-",reserved,0,0))
warn("Failed to add MBR chunk");
for(i=BASE_SLICE;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;
if (Add_Chunk(d,ds.dss_slices[i].ds_offset,
ds.dss_slices[i].ds_size, sname,ce,subtype,flags))
warn("failed to add chunk for slice %d",i - 1);
if (ce == extended)
if (Add_Chunk(d,ds.dss_slices[i].ds_offset,
1, "-",reserved, subtype, flags))
warn("failed to add MBR chunk for slice %d",i - 1);
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) {
char pname[20];
for(j=0; j < dl->d_npartitions; j++) {
sprintf(pname,"%s%c",sname,j+'a');
if (j == 2 || j == 3)
continue;
if (!dl->d_partitions[j].p_size)
continue;
if (Add_Chunk(d,
dl->d_partitions[j].p_offset,
dl->d_partitions[j].p_size,
pname,part,0,0))
warn("Failed to add chunk for partition %c",j + 'a');
}
sprintf(pname,"%sd",sname);
if (!dl->d_partitions[3].p_size)
continue;
Add_Chunk(d,
dl->d_partitions[3].p_offset,
dl->d_partitions[3].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);
if(d->bootmgr) free(d->bootmgr);
if(d->boot1) free(d->boot1);
if(d->boot2) free(d->boot2);
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);
if(d2->bootmgr) {
d2->bootmgr = malloc(DOSPARTOFF);
memcpy(d2->bootmgr,d->bootmgr,DOSPARTOFF);
}
if(d2->boot1) {
d2->boot1 = malloc(512);
memcpy(d2->boot1,d->boot1,512);
}
if(d2->boot2) {
d2->boot2 = malloc(512*7);
memcpy(d2->boot2,d->boot2,512*7);
}
return d2;
}
void
Collapse_Disk(struct disk *d)
{
while(Collapse_Chunk(d,d->chunks))
;
}
static char * device_list[] = {"wd","sd",0};
char **
Disk_Names()
{
int i,j,k;
char disk[25];
char diskname[25];
struct stat st;
struct diskslices ds;
int fd;
static char **disks;
disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
k = 0;
for (j = 0; device_list[j]; j++) {
for (i = 0; i < 10; i++) {
sprintf(diskname, "%s%d", device_list[j], i);
sprintf(disk, "/dev/r%s", diskname);
if (stat(disk, &st) || !(st.st_mode & S_IFCHR))
continue;
if ((fd = open(disk, O_RDWR)) == -1)
continue;
if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
close(fd);
continue;
}
disks[k++] = strdup(diskname);
if(k == MAX_NO_DISKS)
return disks;
}
}
return disks;
}
void
Set_Boot_Mgr(struct disk *d, u_char *b)
{
if (d->bootmgr)
free(d->bootmgr);
d->bootmgr = malloc(DOSPARTOFF);
if(!d->bootmgr) err(1,"malloc failed");
memcpy(d->bootmgr,b,DOSPARTOFF);
}
void
Set_Boot_Blocks(struct disk *d, u_char *b1, u_char *b2)
{
if (d->boot1) free(d->boot1);
d->boot1 = malloc(512);
if(!d->boot1) err(1,"malloc failed");
memcpy(d->boot1,b1,512);
if (d->boot2) free(d->boot2);
d->boot2 = malloc(7*512);
if(!d->boot2) err(1,"malloc failed");
memcpy(d->boot2,b2,7*512);
}
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