627 lines
15 KiB
C
627 lines
15 KiB
C
/* $NetBSD: bsddisklabel.c,v 1.20 2003/07/25 08:26:21 dsl Exp $ */
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/*
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* Copyright 1997 Piermont Information Systems Inc.
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* All rights reserved.
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*
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* Based on code written by Philip A. Nelson for Piermont Information
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* Systems Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Piermont Information Systems Inc.
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* 4. The name of Piermont Information Systems Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* bsddisklabel.c -- generate standard BSD disklabel */
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/* Included by appropriate arch/XXXX/md.c */
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/exec.h>
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#include <sys/utsname.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <machine/cpu.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <util.h>
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#include <dirent.h>
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#include "defs.h"
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#include "md.h"
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#include "endian.h"
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#include "msg_defs.h"
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#include "menu_defs.h"
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/* For the current state of this file blame abs@netbsd.org */
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/* Even though he wasn't the last to hack it, but he did admit doing so :-) */
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#define PART_ANY -1
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#define PART_EXTRA -2
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#define PART_TMP_MFS -3
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/* Defaults for things that might be defined in md.h */
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#ifndef PART_ROOT
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#define PART_ROOT A
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#endif
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#ifndef PART_SWAP
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#define PART_SWAP B
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#endif
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#ifndef PART_USR
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#define PART_USR PART_ANY
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#endif
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#ifndef DEFSWAPRAM
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#define DEFSWAPRAM 32
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#endif
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#ifndef DEFVARSIZE
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#define DEFVARSIZE 32
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#endif
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#ifndef DEFROOTSIZE
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#define DEFROOTSIZE 32
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#endif
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#ifndef DEFUSRSIZE
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#define DEFUSRSIZE 128
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#endif
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#ifndef DEFSWAPSIZE
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#define DEFSWAPSIZE 128
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#endif
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static int set_ptn_size(menudesc *, menu_ent *, void *);
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#define NUM_PTN_MENU (MAXPARTITIONS + 4)
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struct ptn_info {
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struct ptn_size {
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int ptn_id;
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char mount[20];
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int dflt_size;
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int size;
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int limit;
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char changed;
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} ptn_sizes[NUM_PTN_MENU];
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int menu_no;
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int free_parts;
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int free_space;
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struct ptn_size *pool_part;
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menu_ent ptn_menus[NUM_PTN_MENU];
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char ptn_titles[NUM_PTN_MENU][70];
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char exit_msg[70];
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};
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static int
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save_ptn(int ptn, int start, int size, int fstype, const char *mountpt)
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{
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static int maxptn;
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int p;
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if (maxptn == 0)
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maxptn = getmaxpartitions();
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if (ptn < 0 || bsdlabel[ptn].pi_fstype != FS_UNUSED) {
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ptn = getrawpartition() + 1;
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#ifdef PART_FIRST_FREE
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if (ptn < PART_FIRST_FREE)
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ptn = PART_FIRST_FREE;
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#endif
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for (;; ptn++) {
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if (ptn >= maxptn)
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return -1;
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if (ptn == PART_USR)
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continue;
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if (bsdlabel[ptn].pi_fstype == FS_UNUSED)
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break;
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}
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}
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if (fstype == FS_UNUSED)
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return ptn;
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bsdlabel[ptn].pi_fstype = fstype;
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bsdlabel[ptn].pi_offset = start;
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bsdlabel[ptn].pi_size = size;
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if (fstype == FS_BSDFFS) {
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bsdlabel[ptn].pi_frag = 8;
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bsdlabel[ptn].pi_fsize = 1024;
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bsdlabel[ptn].pi_flags |= PIF_NEWFS;
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}
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if (mountpt != NULL) {
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for (p = 0; p < maxptn; p++) {
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if (strcmp(bsdlabel[p].pi_mount, mountpt) == 0)
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bsdlabel[p].pi_flags &= ~PIF_MOUNT;
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}
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strlcpy(bsdlabel[ptn].pi_mount, mountpt,
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sizeof bsdlabel[0].pi_mount);
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bsdlabel[ptn].pi_flags |= PIF_MOUNT;
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}
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return ptn;
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}
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static void
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set_ptn_menu_texts(struct ptn_info *pi)
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{
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struct ptn_size *p;
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menu_ent *m;
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int i;
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int sm = MEG / sectorsize;
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int size;
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for (i = 0; i < NUM_PTN_MENU; i++) {
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p = &pi->ptn_sizes[i];
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m = &pi->ptn_menus[i];
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m->opt_menu = OPT_NOMENU;
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m->opt_flags = 0;
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m->opt_action = set_ptn_size;
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if (p->mount[0] == 0)
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break;
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size = p->size;
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snprintf(pi->ptn_titles[i], sizeof pi->ptn_titles[0],
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"%6u%10u%10u %c %s",
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size / sm, size / dlcylsize, size,
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p == pi->pool_part ? '+' : ' ',
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p->mount);
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}
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if (pi->free_parts > 0 && i < NUM_PTN_MENU) {
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snprintf(pi->ptn_titles[i], sizeof pi->ptn_titles[0], "%s",
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msg_string(MSG_add_another_ptn));
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i++;
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}
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if (i < NUM_PTN_MENU) { /* it always is... */
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m = &pi->ptn_menus[i];
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current_cylsize = dlcylsize;
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m->opt_menu = MENU_sizechoice;
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m->opt_flags = OPT_SUB;
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m->opt_action = NULL;
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snprintf(pi->ptn_titles[i], sizeof pi->ptn_titles[0], "%s",
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msg_string(MSG_askunits));
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i++;
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}
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if (pi->free_space >= 0)
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snprintf(pi->exit_msg, sizeof pi->exit_msg,
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msg_string(MSG_fssizesok),
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pi->free_space / sizemult, multname, pi->free_parts);
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else
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snprintf(pi->exit_msg, sizeof pi->exit_msg,
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msg_string(MSG_fssizesbad),
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-pi->free_space / sizemult, multname, -pi->free_space);
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set_menu_numopts(pi->menu_no, i);
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}
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static int
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set_ptn_size(menudesc *m, menu_ent *opt, void *arg)
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{
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struct ptn_info *pi = arg;
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struct ptn_size *p;
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char answer[10];
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char dflt[10];
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char *cp;
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int size;
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int mult;
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p = pi->ptn_sizes + (opt - m->opts);
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if (pi->free_parts == 0 && p->size == 0)
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/* Don't allow 'free_parts' to go negative */
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return 0;
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if (p->mount[0] == 0) {
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msg_prompt_win(MSG_askfsmount, -1, 18, 0, 0,
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NULL, p->mount, sizeof p->mount);
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if (p->mount[0] == 0)
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return 0;
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}
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size = p->size;
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if (size == 0)
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size = p->dflt_size;
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size /= sizemult;
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snprintf(dflt, sizeof dflt, "%d", size);
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for (;;) {
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mult = sizemult;
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msg_prompt_win(MSG_askfssize, -1, 18, 0, 0,
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dflt, answer, sizeof answer,
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p->mount, multname);
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/* Some special cases when /usr is first given a size */
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if (p->size == 0 && !strcmp(p->mount, "/usr")) {
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/* Remove space for /usr from / */
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if (!pi->ptn_sizes[0].changed) {
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pi->ptn_sizes[0].size -= p->dflt_size;
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pi->free_space += p->dflt_size;
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}
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/* hack to add free space to default sized /usr */
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if (!strcmp(answer, dflt)) {
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size = p->dflt_size;
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pi->pool_part = p;
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goto adjust_free;
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}
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}
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size = strtoul(answer, &cp, 0);
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switch (*cp++) {
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default:
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continue;
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case 's':
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mult = 1;
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break;
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case 'c':
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mult = dlcylsize;
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break;
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case 'm':
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case 'M':
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mult = MEG / sectorsize;
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break;
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case 'g':
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case 'G':
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mult = 1024 * MEG / sectorsize;
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break;
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case '+':
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cp--;
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if (cp != answer)
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break;
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mult = 1;
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size = p->size;
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break;
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case 0:
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cp--;
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break;
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}
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if (*cp == 0 || *cp == '+')
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break;
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}
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size = NUMSEC(size, mult, dlcylsize);
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if (p == pi->pool_part)
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pi->pool_part = NULL;
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if (size != 0 && *cp == '+' && p->limit == 0)
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pi->pool_part = p;
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if (p->limit != 0 && size > p->limit)
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size = p->limit;
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adjust_free:
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if (size != p->size)
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p->changed = 1;
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pi->free_space += p->size - size;
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if (size == 0) {
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if (p->size != 0)
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pi->free_parts++;
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if (p->ptn_id == PART_EXTRA)
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memmove(p, p + 1,
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(char *)&pi->ptn_sizes[NUM_PTN_MENU - 1]
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- (char *)p);
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} else {
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int f = pi->free_space;
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if (p->size == 0)
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pi->free_parts--;
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if (f < mult && -f < mult) {
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/*
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* Round size to end of available space,
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* but keep cylinder alignment
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*/
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if (f < 0)
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f = -ROUNDUP(-f, dlcylsize);
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else
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f = ROUNDDOWN(f, dlcylsize);
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size += f;
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pi->free_space -= f;
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}
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}
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p->size = size;
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set_ptn_menu_texts(pi);
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return 0;
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}
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static void
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get_ptn_sizes(int layout_kind, int part_start, int sectors)
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{
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int i;
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int maxpart = getmaxpartitions();
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int sm; /* sectors in 1MB */
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struct ptn_size *p;
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int size;
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static struct ptn_info pi = { {
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#define PI_ROOT 0
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{ PART_ROOT, "/", DEFROOTSIZE, DEFROOTSIZE },
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#define PI_SWAP 1
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{ PART_SWAP, "swap", DEFSWAPSIZE, DEFSWAPSIZE },
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{ PART_TMP_MFS, "tmp (mfs)", 64 },
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#define PI_USR 3
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{ PART_USR, "/usr", DEFUSRSIZE },
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{ PART_ANY, "/var", DEFVARSIZE },
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{ PART_ANY, "/home", 0 },
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}, -1 };
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menu_ent *m;
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if (maxpart > MAXPARTITIONS)
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maxpart = MAXPARTITIONS; /* sanity */
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msg_display(MSG_ptnsizes);
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msg_table_add(MSG_ptnheaders);
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if (pi.menu_no < 0) {
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/* If installing X increase default size of /usr */
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if (sets_selected & SET_X11)
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pi.ptn_sizes[PI_USR].dflt_size += XNEEDMB;
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if (root_limit != 0 && part_start + sectors > root_limit) {
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/* root can't have all the space... */
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pi.ptn_sizes[PI_USR].size =
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pi.ptn_sizes[PI_USR].dflt_size;
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/* Give free space to /usr */
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pi.pool_part = &pi.ptn_sizes[PI_USR];
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pi.ptn_sizes[PI_ROOT].limit = root_limit - part_start;
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} else {
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/* Make size of root include default size of /usr */
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pi.ptn_sizes[PI_ROOT].size +=
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pi.ptn_sizes[PI_USR].dflt_size;
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/* Give free space to / */
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pi.pool_part = &pi.ptn_sizes[PI_ROOT];
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}
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/* Change preset sizes from MB to sectors */
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sm = MEG / sectorsize;
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pi.free_space = sectors;
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for (p = pi.ptn_sizes; p->mount[0]; p++) {
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p->size = NUMSEC(p->size, sm, dlcylsize);
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p->dflt_size = NUMSEC(p->dflt_size, sm, dlcylsize);
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pi.free_space -= p->size;
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}
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/* Steal space from swap to make things fit.. */
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if (pi.free_space < 0) {
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i = ROUNDUP(-pi.free_space, dlcylsize);
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if (i > pi.ptn_sizes[PI_SWAP].size)
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i = pi.ptn_sizes[PI_SWAP].size;
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pi.ptn_sizes[PI_SWAP].size -= i;
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pi.free_space += i;
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}
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/* Add space for 2 system dumps to / (traditional) */
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i = rammb * sm;
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i = ROUNDUP(i, dlcylsize);
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if (pi.free_space > i * 2)
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i *= 2;
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if (pi.free_space > i) {
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pi.ptn_sizes[PI_ROOT].size += i;
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pi.free_space -= i;
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}
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/* Ensure all of / is readable by the system boot code */
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i = pi.ptn_sizes[PI_ROOT].limit;
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if (i != 0 && (i -= pi.ptn_sizes[PI_ROOT].size) < 0) {
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pi.ptn_sizes[PI_ROOT].size += i;
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pi.free_space -= i;
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}
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/* Count free partition slots */
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pi.free_parts = -2; /* allow for root and swap */
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for (i = 0; i < maxpart; i++) {
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if (bsdlabel[i].pi_size == 0)
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pi.free_parts++;
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}
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/* Link data areas together for menu */
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for (i = 0; i < NUM_PTN_MENU; i++) {
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m = &pi.ptn_menus[i];
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m->opt_name = pi.ptn_titles[i];
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p = &pi.ptn_sizes[i];
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if (i != 0 && p->ptn_id == 0)
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p->ptn_id = PART_EXTRA;
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}
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pi.menu_no = new_menu(0, pi.ptn_menus, NUM_PTN_MENU,
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0, 9, 12, sizeof pi.ptn_titles[0],
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MC_SCROLL | MC_NOBOX | MC_NOCLEAR,
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NULL, NULL, NULL,
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"help", pi.exit_msg);
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if (pi.menu_no < 0)
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return;
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}
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do {
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set_ptn_menu_texts(&pi);
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process_menu(pi.menu_no, &pi);
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} while (pi.free_space < 0 || pi.free_parts < 0);
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/* Give any cylinder fragment to last partition */
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if (pi.pool_part != NULL || pi.free_space < dlcylsize) {
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for (p = pi.ptn_sizes + nelem(pi.ptn_sizes) - 1; ;p--) {
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if (p->size == 0) {
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if (p == pi.ptn_sizes)
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break;
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continue;
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}
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if (p->ptn_id == PART_TMP_MFS)
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continue;
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p->size += pi.free_space % dlcylsize;
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break;
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}
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}
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for (p = pi.ptn_sizes; p->mount[0]; p++, part_start += size) {
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size = p->size;
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if (p == pi.pool_part)
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size += ROUNDDOWN(pi.free_space, dlcylsize);
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i = p->ptn_id;
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if (i == PART_TMP_MFS) {
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tmp_mfs_size = size;
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size = 0;
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continue;
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}
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if (size == 0)
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continue;
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if (i == PART_SWAP) {
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save_ptn(i, part_start, size, FS_SWAP, NULL);
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continue;
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}
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save_ptn(i, part_start, size, FS_BSDFFS, p->mount);
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}
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}
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/*
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* md back-end code for menu-driven BSD disklabel editor.
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*/
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int
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make_bsd_partitions(void)
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{
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int i;
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int part;
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int maxpart = getmaxpartitions();
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int partstart;
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int part_raw, part_bsd;
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int ptend;
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partinfo *p;
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/*
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* Initialize global variables that track space used on this disk.
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* Standard 4.4BSD 8-partition labels always cover whole disk.
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|
*/
|
|
if (ptsize == 0)
|
|
ptsize = dlsize - ptstart;
|
|
if (dlsize == 0)
|
|
dlsize = ptstart + ptsize;
|
|
|
|
partstart = ptstart;
|
|
ptend = ptstart + ptsize;
|
|
|
|
/* Ask for layout type -- standard or special */
|
|
msg_display(MSG_layout,
|
|
ptsize / (MEG / sectorsize),
|
|
DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE,
|
|
DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE + XNEEDMB);
|
|
|
|
process_menu(MENU_layout, NULL);
|
|
|
|
md_set_sizemultname();
|
|
|
|
/* Build standard partitions */
|
|
emptylabel(bsdlabel);
|
|
|
|
/* Set initial partition types to unused */
|
|
for (part = 0 ; part < maxpart ; ++part)
|
|
bsdlabel[part].pi_fstype = FS_UNUSED;
|
|
|
|
/* Whole disk partition */
|
|
part_raw = getrawpartition();
|
|
if (part_raw == -1)
|
|
part_raw = C; /* for sanity... */
|
|
bsdlabel[part_raw].pi_offset = 0;
|
|
bsdlabel[part_raw].pi_size = dlsize;
|
|
|
|
if (part_raw == D) {
|
|
/* Probably a system that expects an i386 style mbr */
|
|
part_bsd = C;
|
|
bsdlabel[C].pi_offset = ptstart;
|
|
bsdlabel[C].pi_size = ptsize;
|
|
} else {
|
|
part_bsd = part_raw;
|
|
}
|
|
|
|
#if defined(PART_BOOT) && defined(BOOT_SIZE)
|
|
i = BOOT_SIZE;
|
|
if (i >= 1024) {
|
|
/* Treat big numbers as a byte count */
|
|
i = (i + dlcylsize * sectorsize - 1) / (dlcylsize * sectorsize);
|
|
i *= dlcylsize;
|
|
}
|
|
bsdlabel[PART_BOOT].pi_fstype = FS_BOOT;
|
|
bsdlabel[PART_BOOT].pi_size = i;
|
|
#ifdef BOOT_HIGH
|
|
bsdlabel[PART_BOOT].pi_offset = ptend - i;
|
|
ptend -= i;
|
|
#else
|
|
bsdlabel[PART_BOOT].pi_offset = ptstart;
|
|
partstart += i;
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef PART_REST
|
|
bsdlabel[PART_REST].pi_offset = 0;
|
|
bsdlabel[PART_REST].pi_size = ptstart;
|
|
#endif
|
|
|
|
/*
|
|
* Save any partitions that are outside the area we are
|
|
* going to use.
|
|
* In particular this saves details of the other MBR
|
|
* partitons on a multiboot i386 system.
|
|
*/
|
|
for (i = maxpart; i--;) {
|
|
if (bsdlabel[i].pi_size != 0)
|
|
/* Don't overwrite special partitions */
|
|
continue;
|
|
p = &oldlabel[i];
|
|
if (p->pi_fstype == FS_UNUSED || p->pi_size == 0)
|
|
continue;
|
|
if (layoutkind == 4) {
|
|
if (PI_ISBSDFS(p))
|
|
p->pi_flags |= PIF_MOUNT;
|
|
} else {
|
|
if (p->pi_offset < ptstart + ptsize &&
|
|
p->pi_offset + p->pi_size > ptstart)
|
|
/* Not outside area we are allocating */
|
|
continue;
|
|
}
|
|
bsdlabel[i] = oldlabel[i];
|
|
}
|
|
|
|
if (layoutkind == 4) {
|
|
/* XXX Check we have a sensible layout */
|
|
;
|
|
} else
|
|
get_ptn_sizes(layoutkind, partstart, ptend - partstart);
|
|
|
|
/*
|
|
* OK, we have a partition table. Give the user the chance to
|
|
* edit it and verify it's OK, or abort altogether.
|
|
*/
|
|
edit_check:
|
|
if (edit_and_check_label(bsdlabel, maxpart, part_raw, part_bsd) == 0) {
|
|
msg_display(MSG_abort);
|
|
return 0;
|
|
}
|
|
if (md_check_partitions() == 0)
|
|
goto edit_check;
|
|
|
|
/* Disk name */
|
|
msg_prompt(MSG_packname, "mydisk", bsddiskname, DISKNAME_SIZE);
|
|
|
|
/* save label to disk for MI code to update. */
|
|
(void) savenewlabel(bsdlabel, maxpart);
|
|
|
|
/* Everything looks OK. */
|
|
return (1);
|
|
}
|