FreeBSD-5.3/lib/libdisk/create_chunk.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/create_chunk.c,v 1.85 2004/04/21 23:21:13 grehan Exp $");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdarg.h>
#include <sys/param.h>
#include <sys/disklabel.h>
#ifdef PC98
#include <sys/diskpc98.h>
#else
#include <sys/diskmbr.h>
#endif
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <grp.h>
#include <paths.h>
#include <pwd.h>
#include "libdisk.h"
struct chunk *New_Chunk(void);
static int
Fixup_FreeBSD_Names(struct chunk *c)
{
struct chunk *c1, *c3;
uint j;
if (!strcmp(c->name, "X"))
return 0;
/* reset all names to "X" */
for (c1 = c->part; c1; c1 = c1->next) {
c1->oname = c1->name;
c1->name = malloc(12);
if (!c1->name)
return -1;
strcpy(c1->name,"X");
}
/* Allocate the first swap-partition we find */
for (c1 = c->part; c1; c1 = c1->next) {
if (c1->type == unused)
continue;
if (c1->subtype != FS_SWAP)
continue;
sprintf(c1->name, "%s%c", c->name, SWAP_PART + 'a');
break;
}
/* Allocate the first root-partition we find */
for (c1 = c->part; c1; c1 = c1->next) {
if (c1->type == unused)
continue;
if (!(c1->flags & CHUNK_IS_ROOT))
continue;
sprintf(c1->name, "%s%c", c->name, 0 + 'a');
break;
}
/* Try to give them the same as they had before */
for (c1 = c->part; c1; c1 = c1->next) {
if (strcmp(c1->name, "X"))
continue;
for (c3 = c->part; c3 ; c3 = c3->next)
if (c1 != c3 && !strcmp(c3->name, c1->oname))
goto newname;
strcpy(c1->name, c1->oname);
newname:
;
}
/* Allocate the rest sequentially */
for (c1 = c->part; c1; c1 = c1->next) {
const char order[] = "defghab";
if (c1->type == unused)
continue;
if (strcmp("X", c1->name))
continue;
for (j = 0; j < strlen(order); j++) {
sprintf(c1->name, "%s%c", c->name, order[j]);
for (c3 = c->part; c3 ; c3 = c3->next)
if (c1 != c3 && !strcmp(c3->name, c1->name))
goto match;
break;
match:
strcpy(c1->name, "X");
continue;
}
}
for (c1 = c->part; c1; c1 = c1->next) {
free(c1->oname);
c1->oname = 0;
}
return 0;
}
#ifndef PC98
static int
Fixup_Extended_Names(struct chunk *c)
{
struct chunk *c1;
int j = 5;
for (c1 = c->part; c1; c1 = c1->next) {
if (c1->type == unused)
continue;
free(c1->name);
c1->name = malloc(12);
if (!c1->name)
return -1;
sprintf(c1->name, "%ss%d", c->disk->chunks->name, j++);
if (c1->type == freebsd)
if (Fixup_FreeBSD_Names(c1) != 0)
return -1;
}
return 0;
}
#endif
#ifdef __powerpc__
static int
Fixup_Apple_Names(struct chunk *c)
{
struct chunk *c1;
for (c1 = c->part; c1; c1 = c1->next) {
if (c1->type == unused)
continue;
free(c1->name);
c1->name = strdup(c->name);
if (!c1->name)
return (-1);
}
return 0;
}
#endif
int
Fixup_Names(struct disk *d)
{
struct chunk *c1, *c2;
#if defined(__i386__) || defined(__ia64__) || defined(__amd64__)
struct chunk *c3;
int j, max;
#endif
c1 = d->chunks;
for (c2 = c1->part; c2 ; c2 = c2->next) {
if (c2->type == unused)
continue;
if (strcmp(c2->name, "X"))
continue;
#if defined(__i386__) || defined(__ia64__) || defined(__amd64__)
c2->oname = malloc(12);
if (!c2->oname)
return -1;
#ifdef __ia64__
max = d->gpt_size;
#else
max = NDOSPART;
#endif
for (j = 1; j <= max; j++) {
#ifdef __ia64__
sprintf(c2->oname, "%s%c%d", c1->name,
(c1->type == whole) ? 'p' : 's', j);
#else
sprintf(c2->oname, "%ss%d", c1->name, j);
#endif
for (c3 = c1->part; c3; c3 = c3->next)
if (c3 != c2 && !strcmp(c3->name, c2->oname))
goto match;
free(c2->name);
c2->name = c2->oname;
c2->oname = 0;
break;
match:
continue;
}
if (c2->oname)
free(c2->oname);
#else
free(c2->name);
c2->name = strdup(c1->name);
#endif /*__i386__*/
}
for (c2 = c1->part; c2; c2 = c2->next) {
if (c2->type == freebsd)
Fixup_FreeBSD_Names(c2);
#ifdef __powerpc__
else if (c2->type == apple)
Fixup_Apple_Names(c2);
#endif
#ifndef PC98
else if (c2->type == extended)
Fixup_Extended_Names(c2);
#endif
}
return 0;
}
int
Create_Chunk(struct disk *d, daddr_t offset, daddr_t size, chunk_e type,
int subtype, u_long flags, const char *sname)
{
int i;
#ifndef __ia64__
if (!(flags & CHUNK_FORCE_ALL)) {
daddr_t l;
#ifdef PC98
/* Never use the first cylinder */
if (!offset) {
offset += (d->bios_sect * d->bios_hd);
size -= (d->bios_sect * d->bios_hd);
}
#else
/* Never use the first track */
if (!offset) {
offset += d->bios_sect;
size -= d->bios_sect;
}
#endif /* PC98 */
/* Always end on cylinder boundary */
l = (offset + size) % (d->bios_sect * d->bios_hd);
size -= l;
}
#endif
i = Add_Chunk(d, offset, size, "X", type, subtype, flags, sname);
Fixup_Names(d);
return i;
}
struct chunk *
Create_Chunk_DWIM(struct disk *d, struct chunk *parent, daddr_t size,
chunk_e type, int subtype, u_long flags)
{
int i;
struct chunk *c1;
daddr_t offset;
if (!parent)
parent = d->chunks;
if ((parent->type == freebsd && type == part && parent->part == NULL)
|| (parent->type == apple && type == part && parent->part == NULL)) {
c1 = New_Chunk();
if (c1 == NULL)
return (NULL);
c1->disk = parent->disk;
c1->offset = parent->offset;
c1->size = parent->size;
c1->end = parent->offset + parent->size - 1;
c1->type = unused;
if (parent->sname != NULL)
c1->sname = strdup(parent->sname);
c1->name = strdup("-");
parent->part = c1;
}
for (c1 = parent->part; c1; c1 = c1->next) {
if (c1->type != unused)
continue;
if (c1->size < size)
continue;
offset = c1->offset;
goto found;
}
return 0;
found:
i = Add_Chunk(d, offset, size, "X", type, subtype, flags, "-");
if (i)
return 0;
Fixup_Names(d);
for (c1 = parent->part; c1; c1 = c1->next)
if (c1->offset == offset)
return c1;
/* barfout(1, "Serious internal trouble"); */
return 0;
}