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freebsd/lib/libdisk/disk.c

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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
* ----------------------------------------------------------------------------
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <err.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], *buf;
struct disk *d;
u_long sector_size;
#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) return NULL;
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_SLICE].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
/* determine media sector size */
if ((buf = malloc(MAX_SEC_SIZE)) == NULL)
return NULL;
for (sector_size = MIN_SEC_SIZE; sector_size <= MAX_SEC_SIZE; sector_size *= 2) {
if (read(fd, buf, sector_size) == sector_size) {
d->sector_size = sector_size;
break;
}
}
free (buf);
if (sector_size > MAX_SEC_SIZE)
return NULL; /* could not determine sector size */
#ifdef PC98
p = (unsigned char*)read_block(fd, 1, sector_size);
#else
p = read_block(fd, 0, sector_size);
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) return NULL;
*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)
return NULL;
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
if (bootipl_size % d->sector_size != 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) return;
memcpy(d->bootipl, bootipl, bootipl_size);
}
if (bootmenu_size % d->sector_size != 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) return;
memcpy(d->bootmenu, bootmenu, bootmenu_size);
}
#else
if (s % d->sector_size != 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) return;
memcpy(d->bootmgr, b, s);
}
#endif
}
int
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) return -1;
memcpy(d->boot1, b1, 512);
if (d->boot2) free(d->boot2);
d->boot2 = malloc(15 * 512);
if(!d->boot2) return -1;
memcpy(d->boot2, b2, 15 * 512);
#elif defined(__alpha__)
if (d->boot1) free(d->boot1);
d->boot1 = malloc(15 * 512);
if(!d->boot1) return -1;
memcpy(d->boot1, b1, 15 * 512);
#endif
return 0;
}
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";
case 238: return "EFI GPT";
case 239: return "EFI Sys. Part.";
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";
}
}
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