FreeBSD-5.3/lib/libdisk/disk.c
/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> 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: src/lib/libdisk/disk.c,v 1.122 2004/05/16 22:08:16 stefanf Exp $");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <inttypes.h>
#include <err.h>
#include <sys/sysctl.h>
#include <sys/stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/uuid.h>
#include <sys/gpt.h>
#include <paths.h>
#include "libdisk.h"
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <uuid.h>
const enum platform platform =
#if defined (P_DEBUG)
P_DEBUG
#elif defined (PC98)
p_pc98
#elif defined(__i386__)
p_i386
#elif defined(__alpha__)
p_alpha
#elif defined(__sparc64__)
p_sparc64
#elif defined(__ia64__)
p_ia64
#elif defined(__ppc__)
p_ppc
#elif defined(__amd64__)
p_amd64
#else
IHAVENOIDEA
#endif
;
const char *
chunk_name(chunk_e type)
{
switch(type) {
case unused: return ("unused");
case mbr: return ("mbr");
case part: return ("part");
case gpt: return ("gpt");
case pc98: return ("pc98");
case sun: return ("sun");
case freebsd: return ("freebsd");
case fat: return ("fat");
case spare: return ("spare");
case efi: return ("efi");
case apple: return ("apple");
default: return ("??");
}
}
struct disk *
Open_Disk(const char *name)
{
char *conftxt;
size_t txtsize;
int error;
error = sysctlbyname("kern.geom.conftxt", NULL, &txtsize, NULL, 0);
if (error) {
warn("kern.geom.conftxt sysctl not available, giving up!");
return (NULL);
}
conftxt = malloc(txtsize+1);
if (conftxt == NULL) {
warn("cannot malloc memory for conftxt");
return (NULL);
}
error = sysctlbyname("kern.geom.conftxt", conftxt, &txtsize, NULL, 0);
if (error) {
warn("error reading kern.geom.conftxt from the system");
free(conftxt);
return (NULL);
}
conftxt[txtsize] = '\0'; /* in case kernel bug is still there */
return Int_Open_Disk(name, conftxt);
}
void
Debug_Disk(struct disk *d)
{
printf("Debug_Disk(%s)", d->name);
#ifndef __ia64__
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__) || defined(__amd64__)
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);
#else
/* Should be: error "Debug_Disk: unknown arch"; */
#endif
#else /* __ia64__ */
printf(" media size=%lu, sector size=%lu\n", d->media_size,
d->sector_size);
#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 !defined(__ia64__)
if (d->bootmgr)
free(d->bootmgr);
#endif
#endif
#if !defined(__ia64__)
if (d->boot1)
free(d->boot1);
#endif
#if defined(__i386__) || defined(__amd64__)
if (d->boot2)
free(d->boot2);
#endif
free(d);
}
#if 0
void
Collapse_Disk(struct disk *d)
{
while (Collapse_Chunk(d, d->chunks))
;
}
#endif
static int
qstrcmp(const void* a, const void* b)
{
const char *str1 = *(char* const*)a;
const char *str2 = *(char* const*)b;
return strcmp(str1, str2);
}
char **
Disk_Names()
{
int disk_cnt;
static char **disks;
int error;
size_t listsize;
char *disklist;
error = sysctlbyname("kern.disks", NULL, &listsize, NULL, 0);
if (error) {
warn("kern.disks sysctl not available");
return NULL;
}
if (listsize == 0)
return (NULL);
disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
if (disks == NULL)
return NULL;
disklist = (char *)malloc(listsize + 1);
if (disklist == NULL) {
free(disks);
return NULL;
}
memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
memset(disklist, 0, listsize + 1);
error = sysctlbyname("kern.disks", disklist, &listsize, NULL, 0);
if (error || disklist[0] == 0) {
free(disklist);
free(disks);
return NULL;
}
for (disk_cnt = 0; disk_cnt < MAX_NO_DISKS; disk_cnt++) {
disks[disk_cnt] = strsep(&disklist, " ");
if (disks[disk_cnt] == NULL)
break;
}
qsort(disks, disk_cnt, sizeof(char*), qstrcmp);
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
{
#if !defined(__ia64__)
#ifdef PC98
if (d->sector_size == 0)
return;
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 (d->sector_size == 0)
return;
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
#endif
}
int
Set_Boot_Blocks(struct disk *d, const u_char *b1, const u_char *b2)
{
#if defined(__i386__) || defined(__amd64__)
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);
#elif defined(__sparc64__)
if (d->boot1 != NULL)
free(d->boot1);
d->boot1 = malloc(16 * 512);
if (d->boot1 == NULL)
return (-1);
memcpy(d->boot1, b1, 16 * 512);
#elif defined(__ia64__)
/* nothing */
#else
/* Should be: #error "Set_Boot_Blocks: unknown arch"; */
#endif
return 0;
}
#ifdef PC98
const char *
slice_type_name( int type, int subtype )
{
switch (type) {
case whole:
return "whole";
case fat:
return "fat";
case freebsd:
switch (subtype) {
case 0xc494: return "freebsd";
default: return "unknown";
}
case unused:
return "unused";
default:
return "unknown";
}
}
#else /* PC98 */
const char *
slice_type_name( int type, int subtype )
{
switch (type) {
case whole:
return "whole";
case mbr:
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";
}
case fat:
return "fat";
case freebsd:
switch (subtype) {
case 165: return "freebsd";
default: return "unknown";
}
case extended:
return "extended";
case part:
return "part";
case efi:
return "efi";
case unused:
return "unused";
default:
return "unknown";
}
}
#endif /* PC98 */