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freebsd/lib/libdisk/disk.c
David E. O'Brien 135c56336a Libraries should _never_ call exit() themselves (or its alternate spelling
`err()').  libdisk does! and additionally libdisk gets confused on Alpha
disks with foreign disklabels, throws up its hands and exits.  This is
the cause of the "going no where without my init" install bug on the Alpha.

So now on the Alpha, rather than call err(), we print the error string and
continue processing.

Submitted by:	jkh
2001-03-18 21:30:11 +00:00

651 lines
14 KiB
C

/*
* ----------------------------------------------------------------------------
* "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
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
#include <paths.h>
#include "libdisk.h"
#define DOSPTYP_EXTENDED 5
#define DOSPTYP_ONTRACK 84
const char *chunk_n[] = {
"whole",
"unknown",
"fat",
"freebsd",
"extended",
"part",
"unused",
NULL
};
struct disk *
Open_Disk(const char *name)
{
return Int_Open_Disk(name,0);
}
#ifndef PC98
static u_int32_t
Read_Int32(u_int32_t *p)
{
u_int8_t *bp = (u_int8_t *)p;
return bp[0] | (bp[1] << 8) | (bp[2] << 16) | (bp[3] << 24);
}
#endif
struct disk *
Int_Open_Disk(const char *name, u_long size)
{
int i,fd;
struct diskslices ds;
struct disklabel dl;
char device[64];
struct disk *d;
#ifdef PC98
unsigned char *p;
#else
struct dos_partition *dp;
void *p;
#endif
u_long offset = 0;
strcpy(device,_PATH_DEV);
strcat(device,name);
d = (struct disk *)malloc(sizeof *d);
if(!d) barfout(1,"malloc failed");
memset(d,0,sizeof *d);
fd = open(device,O_RDONLY);
if (fd < 0) {
#ifdef DEBUG
warn("open(%s) failed",device);
#endif
return 0;
}
memset(&dl,0,sizeof dl);
ioctl(fd,DIOCGDINFO,&dl);
i = ioctl(fd,DIOCGSLICEINFO,&ds);
if (i < 0) {
#ifdef DEBUG
warn("DIOCGSLICEINFO(%s) failed",device);
#endif
close(fd);
return 0;
}
#ifdef DEBUG
for(i=0;i<ds.dss_nslices;i++)
if(ds.dss_slices[i].ds_openmask)
printf(" open(%d)=0x%2x",
i,ds.dss_slices[i].ds_openmask);
printf("\n");
#endif
/* XXX --- ds.dss_slice[WHOLE_DISK_SLCIE].ds.size of MO disk is wrong!!! */
#ifdef PC98
if (!size)
size = dl.d_ncylinders * dl.d_ntracks * dl.d_nsectors;
#else
if (!size)
size = ds.dss_slices[WHOLE_DISK_SLICE].ds_size;
#endif
#ifdef PC98
p = (unsigned char*)read_block(fd,1);
#else
p = read_block(fd,0);
dp = (struct dos_partition*)(p+DOSPARTOFF);
for (i=0; i < NDOSPART; i++) {
if (Read_Int32(&dp->dp_start) >= size)
continue;
if (Read_Int32(&dp->dp_start) + Read_Int32(&dp->dp_size) >= size)
continue;
if (!Read_Int32(&dp->dp_size))
continue;
if (dp->dp_typ == DOSPTYP_ONTRACK) {
d->flags |= DISK_ON_TRACK;
offset = 63;
}
}
free(p);
#endif
d->bios_sect = dl.d_nsectors;
d->bios_hd = dl.d_ntracks;
d->name = strdup(name);
if (dl.d_ntracks && dl.d_nsectors)
d->bios_cyl = size/(dl.d_ntracks*dl.d_nsectors);
#ifdef PC98
if (Add_Chunk(d, -offset, size, name, whole, 0, 0, "-"))
#else
if (Add_Chunk(d, -offset, size, name, whole, 0, 0))
#endif
#ifdef DEBUG
warn("Failed to add 'whole' chunk");
#else
{}
#endif
#ifdef __i386__
#ifdef PC98
/* XXX -- Quick Hack!
* Check MS-DOS MO
*/
if ((*p == 0xf0 || *p == 0xf8) &&
(*(p+1) == 0xff) &&
(*(p+2) == 0xff)) {
Add_Chunk(d, 0, size, name, fat, 0xa0a0, 0, name);
free(p);
goto pc98_mo_done;
}
free(p);
#endif /* PC98 */
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;
ds.dss_slices[i].ds_offset -= offset;
sprintf(sname,"%ss%d",name,i-1);
#ifdef PC98
subtype = ds.dss_slices[i].ds_type |
ds.dss_slices[i].ds_subtype << 8;
switch (ds.dss_slices[i].ds_type & 0x7f) {
case 0x14:
ce = freebsd;
break;
case 0x20:
case 0x21:
case 0x22:
case 0x23:
case 0x24:
ce = fat;
break;
#else /* IBM-PC */
subtype = ds.dss_slices[i].ds_type;
switch (ds.dss_slices[i].ds_type) {
case 0xa5:
ce = freebsd;
break;
case 0x1:
case 0x6:
case 0x4:
case 0xb:
case 0xc:
case 0xe:
ce = fat;
break;
case DOSPTYP_EXTENDED:
case 0xf:
ce = extended;
break;
#endif
default:
ce = unknown;
break;
}
#ifdef PC98
if (Add_Chunk(d,ds.dss_slices[i].ds_offset,
ds.dss_slices[i].ds_size, sname, ce, subtype, flags,
ds.dss_slices[i].ds_name))
#else
if (Add_Chunk(d, ds.dss_slices[i].ds_offset,
ds.dss_slices[i].ds_size, sname, ce, subtype, flags))
#endif
#ifdef DEBUG
warn("failed to add chunk for slice %d", i - 1);
#else
{}
#endif
#ifdef PC98
if ((ds.dss_slices[i].ds_type & 0x7f) != 0x14)
#else
if (ds.dss_slices[i].ds_type != 0xa5)
#endif
continue;
{
struct disklabel dl;
char pname[20];
int j,k;
strcpy(pname,_PATH_DEV);
strcat(pname,sname);
j = open(pname,O_RDONLY);
if (j < 0) {
#ifdef DEBUG
warn("open(%s)",pname);
#endif
continue;
}
k = ioctl(j,DIOCGDINFO,&dl);
if (k < 0) {
#ifdef DEBUG
warn("ioctl(%s,DIOCGDINFO)",pname);
#endif
close(j);
continue;
}
close(j);
for(j=0; j <= dl.d_npartitions; j++) {
if (j == RAW_PART)
continue;
if (j == 3)
continue;
if (j == dl.d_npartitions) {
j = 3;
dl.d_npartitions=0;
}
if (!dl.d_partitions[j].p_size)
continue;
if (dl.d_partitions[j].p_size +
dl.d_partitions[j].p_offset >
ds.dss_slices[i].ds_size)
continue;
sprintf(pname,"%s%c",sname,j+'a');
if (Add_Chunk(d,
dl.d_partitions[j].p_offset +
ds.dss_slices[i].ds_offset,
dl.d_partitions[j].p_size,
pname,part,
dl.d_partitions[j].p_fstype,
#ifdef PC98
0,
ds.dss_slices[i].ds_name) && j != 3)
#else
0) && j != 3)
#endif
#ifdef DEBUG
warn(
"Failed to add chunk for partition %c [%lu,%lu]",
j + 'a',dl.d_partitions[j].p_offset,
dl.d_partitions[j].p_size);
#else
{}
#endif
}
}
}
#endif /* __i386__ */
#ifdef __alpha__
{
struct disklabel dl;
char pname[20];
int j,k;
strcpy(pname,_PATH_DEV);
strcat(pname,name);
j = open(pname,O_RDONLY);
if (j < 0) {
#ifdef DEBUG
warn("open(%s)",pname);
#endif
goto nolabel;
}
k = ioctl(j,DIOCGDINFO,&dl);
if (k < 0) {
#ifdef DEBUG
warn("ioctl(%s,DIOCGDINFO)",pname);
#endif
close(j);
goto nolabel;
}
close(j);
All_FreeBSD(d, 1);
for(j=0; j <= dl.d_npartitions; j++) {
if (j == RAW_PART)
continue;
if (j == 3)
continue;
if (j == dl.d_npartitions) {
j = 3;
dl.d_npartitions=0;
}
if (!dl.d_partitions[j].p_size)
continue;
if (dl.d_partitions[j].p_size +
dl.d_partitions[j].p_offset >
ds.dss_slices[WHOLE_DISK_SLICE].ds_size)
continue;
sprintf(pname,"%s%c",name,j+'a');
if (Add_Chunk(d,
dl.d_partitions[j].p_offset,
dl.d_partitions[j].p_size,
pname,part,
dl.d_partitions[j].p_fstype,
0) && j != 3)
#ifdef DEBUG
warn(
"Failed to add chunk for partition %c [%lu,%lu]",
j + 'a',dl.d_partitions[j].p_offset,
dl.d_partitions[j].p_size);
#else
{}
#endif
}
nolabel:;
}
#endif /* __alpha__ */
#ifdef PC98
pc98_mo_done:
#endif
close(fd);
Fixup_Names(d);
return d;
}
void
Debug_Disk(struct disk *d)
{
printf("Debug_Disk(%s)",d->name);
printf(" flags=%lx",d->flags);
#if 0
printf(" real_geom=%lu/%lu/%lu",d->real_cyl,d->real_hd,d->real_sect);
#endif
printf(" bios_geom=%lu/%lu/%lu = %lu\n",
d->bios_cyl,d->bios_hd,d->bios_sect,
d->bios_cyl*d->bios_hd*d->bios_sect);
#if defined(PC98)
printf(" boot1=%p, boot2=%p, bootipl=%p, bootmenu=%p\n",
d->boot1,d->boot2,d->bootipl,d->bootmenu);
#elif defined(__i386__)
printf(" boot1=%p, boot2=%p, bootmgr=%p\n",
d->boot1,d->boot2,d->bootmgr);
#elif defined(__alpha__)
printf(" boot1=%p, bootmgr=%p\n",
d->boot1,d->bootmgr);
#endif
Debug_Chunk(d->chunks);
}
void
Free_Disk(struct disk *d)
{
if(d->chunks) Free_Chunk(d->chunks);
if(d->name) free(d->name);
#ifdef PC98
if(d->bootipl) free(d->bootipl);
if(d->bootmenu) free(d->bootmenu);
#else
if(d->bootmgr) free(d->bootmgr);
#endif
if(d->boot1) free(d->boot1);
#if defined(__i386__)
if(d->boot2) free(d->boot2);
#endif
free(d);
}
struct disk *
Clone_Disk(struct disk *d)
{
struct disk *d2;
d2 = (struct disk*) malloc(sizeof *d2);
if(!d2) barfout(1,"malloc failed");
*d2 = *d;
d2->name = strdup(d2->name);
d2->chunks = Clone_Chunk(d2->chunks);
#ifdef PC98
if(d2->bootipl) {
d2->bootipl = malloc(d2->bootipl_size);
memcpy(d2->bootipl,d->bootipl,d2->bootipl_size);
}
if(d2->bootmenu) {
d2->bootmenu = malloc(d2->bootmenu_size);
memcpy(d2->bootmenu,d->bootmenu,d2->bootmenu_size);
}
#else
if(d2->bootmgr) {
d2->bootmgr = malloc(d2->bootmgr_size);
memcpy(d2->bootmgr,d->bootmgr,d2->bootmgr_size);
}
#endif
#if defined(__i386__)
if(d2->boot1) {
d2->boot1 = malloc(512);
memcpy(d2->boot1,d->boot1,512);
}
if(d2->boot2) {
d2->boot2 = malloc(512*15);
memcpy(d2->boot2,d->boot2,512*15);
}
#elif defined(__alpha__)
if(d2->boot1) {
d2->boot1 = malloc(512*15);
memcpy(d2->boot1,d->boot1,512*15);
}
#endif
return d2;
}
#if 0
void
Collapse_Disk(struct disk *d)
{
while(Collapse_Chunk(d,d->chunks))
;
}
#endif
#ifdef PC98
static char * device_list[] = {"wd", "aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
#else
static char * device_list[] = {"aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
#endif
char **
Disk_Names()
{
int i,j,k;
char disk[25];
char diskname[25];
struct stat st;
struct diskslices ds;
int fd;
static char **disks;
int error;
size_t listsize;
char *disklist, **dp;
disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
error = sysctlbyname("kern.disks", NULL, &listsize, NULL, 0);
if (!error) {
disklist = (char *)malloc(listsize);
error = sysctlbyname("kern.disks", disklist, &listsize, NULL, 0);
if (error)
barfout(1, "sysctlbyname(\"kern.disks\") failed");
k = 0;
for (dp = disks; ((*dp = strsep(&disklist, " ")) != NULL) && k < MAX_NO_DISKS; k++, dp++);
return disks;
}
warn("kern.disks sysctl not available");
k = 0;
for (j = 0; device_list[j]; j++) {
for (i = 0; i < MAX_NO_DISKS; i++) {
sprintf(diskname, "%s%d", device_list[j], i);
sprintf(disk, _PATH_DEV"%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) {
#ifdef DEBUG
warn("DIOCGSLICEINFO %s", disk);
#endif
close(fd);
continue;
}
close(fd);
disks[k++] = strdup(diskname);
if(k == MAX_NO_DISKS)
return disks;
}
}
return disks;
}
#ifdef PC98
void
Set_Boot_Mgr(struct disk *d, const u_char *bootipl, const size_t bootipl_size,
const u_char *bootmenu, const size_t bootmenu_size)
#else
void
Set_Boot_Mgr(struct disk *d, const u_char *b, const size_t s)
#endif
{
#ifdef PC98
/* XXX - assumes sector size of 512 */
if (bootipl_size % 512 != 0)
return;
if (d->bootipl)
free(d->bootipl);
if (!bootipl) {
d->bootipl = NULL;
} else {
d->bootipl_size = bootipl_size;
d->bootipl = malloc(bootipl_size);
if(!d->bootipl) barfout(1,"malloc failed");
memcpy(d->bootipl,bootipl,bootipl_size);
}
/* XXX - assumes sector size of 512 */
if (bootmenu_size % 512 != 0)
return;
if (d->bootmenu)
free(d->bootmenu);
if (!bootmenu) {
d->bootmenu = NULL;
} else {
d->bootmenu_size = bootmenu_size;
d->bootmenu = malloc(bootmenu_size);
if(!d->bootmenu) barfout(1,"malloc failed");
memcpy(d->bootmenu,bootmenu,bootmenu_size);
}
#else
/* XXX - assumes sector size of 512 */
if (s % 512 != 0)
return;
if (d->bootmgr)
free(d->bootmgr);
if (!b) {
d->bootmgr = NULL;
} else {
d->bootmgr_size = s;
d->bootmgr = malloc(s);
if(!d->bootmgr) barfout(1,"malloc failed");
memcpy(d->bootmgr,b,s);
}
#endif
}
void
Set_Boot_Blocks(struct disk *d, const u_char *b1, const u_char *b2)
{
#if defined(__i386__)
if (d->boot1) free(d->boot1);
d->boot1 = malloc(512);
if(!d->boot1) barfout(1,"malloc failed");
memcpy(d->boot1,b1,512);
if (d->boot2) free(d->boot2);
d->boot2 = malloc(15*512);
if(!d->boot2) barfout(1,"malloc failed");
memcpy(d->boot2,b2,15*512);
#elif defined(__alpha__)
if (d->boot1) free(d->boot1);
d->boot1 = malloc(15*512);
if(!d->boot1) barfout(1,"malloc failed");
memcpy(d->boot1,b1,15*512);
#endif
}
const char *
slice_type_name( int type, int subtype )
{
switch (type) {
case 0: return "whole";
#ifndef PC98
case 1: switch (subtype) {
case 1: return "fat (12-bit)";
case 2: return "XENIX /";
case 3: return "XENIX /usr";
case 4: return "fat (16-bit,<=32Mb)";
case 5: return "extended DOS";
case 6: return "fat (16-bit,>32Mb)";
case 7: return "NTFS/HPFS/QNX";
case 8: return "AIX bootable";
case 9: return "AIX data";
case 10: return "OS/2 bootmgr";
case 11: return "fat (32-bit)";
case 12: return "fat (32-bit,LBA)";
case 14: return "fat (16-bit,>32Mb,LBA)";
case 15: return "extended DOS, LBA";
case 18: return "Compaq Diagnostic";
case 84: return "OnTrack diskmgr";
case 100: return "Netware 2.x";
case 101: return "Netware 3.x";
case 115: return "SCO UnixWare";
case 128: return "Minix 1.1";
case 129: return "Minix 1.5";
case 130: return "linux_swap";
case 131: return "ext2fs";
case 166: return "OpenBSD FFS"; /* 0xA6 */
case 169: return "NetBSD FFS"; /* 0xA9 */
case 182: return "OpenBSD"; /* dedicated */
case 183: return "bsd/os";
case 184: return "bsd/os swap";
default: return "unknown";
}
#endif
case 2: return "fat";
case 3: switch (subtype) {
#ifdef PC98
case 0xc494: return "freebsd";
#else
case 165: return "freebsd";
#endif
default: return "unknown";
}
#ifndef PC98
case 4: return "extended";
case 5: return "part";
case 6: return "unused";
#endif
default: return "unknown";
}
}