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/*
* lib/part/create.c
*
* Copyright (C) 1997,1998 Russell King
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "util/debug.h"
#include "util/error.h"
#include "part/part.h"
/* Prototype: u_int part_create(part_t *part, partinfo_t *pinfo)
* Function : Allocate a new partition slot `parn' and kernel partition number.
* Params : part - partitionable device
* : parn - partition number, or PARN_ALLOCATE to use first slot
* : pinfo - partition info structure to set new partition as
* Returns : FALSE on error
* Notes : Do not alter any structures on disk.
*/
u_int part_allocate(part_t *part, partinfo_t *pinfo)
{
u_int parn;
assert(part != NULL);
assert(part->scheme != NULL);
assert(pinfo != NULL);
dbg_printf("part_allocate(pinfo=[bs=0x%X, be=0x%X, type=0x%X])",
pinfo->blk_start, pinfo->blk_end, pinfo->type);
dbg_level_up();
clear_error();
do {
parn = part->scheme->allocate(part, pinfo);
if (parn == PARN_ERROR) {
if (!is_error_set())
set_error("unable to allocate slot for partition");
break;
}
if (part->scheme->validate_partno(part, parn)) {
if (part->nr_partitions == 0 || parn >= part->nr_partitions) {
partinfo_i_t **p;
u_int new_nr = parn + 1;
p = malloc(new_nr * sizeof(*p));
if (p) {
memset(p, 0, new_nr * sizeof(*p));
memcpy(p, part->partinfo, part->nr_partitions * sizeof(*p));
free(part->partinfo);
part->partinfo = p;
part->nr_partitions = new_nr;
} else {
set_error("out of memory");
break;
}
}
} else if (!is_error_set())
set_error("part_allocate: invalid partition number %d", parn);
} while (0);
dbg_level_down();
dbg_printf("ret=%d (kern_part_no=%d)", parn, pinfo->kern_part_no);
return parn;
}
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