Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/distrib/utils/sysinst/bsddisklabel.c

703 lines
18 KiB
C
Raw Blame History

/* $NetBSD: bsddisklabel.c,v 1.45 2008/05/24 11:06:53 martin Exp $ */
/*
* Copyright 1997 Piermont Information Systems Inc.
* All rights reserved.
*
* Based on code written by Philip A. Nelson for Piermont Information
* Systems Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Piermont Information Systems Inc.
* 4. The name of Piermont Information Systems Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
/* bsddisklabel.c -- generate standard BSD disklabel */
/* Included by appropriate arch/XXXX/md.c */
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/exec.h>
#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <machine/cpu.h>
#include <stdio.h>
#include <stddef.h>
#include <util.h>
#include <dirent.h>
#include "defs.h"
#include "md.h"
#include "endian.h"
#include "msg_defs.h"
#include "menu_defs.h"
/* For the current state of this file blame abs@NetBSD.org */
/* Even though he wasn't the last to hack it, but he did admit doing so :-) */
#define PART_ANY -1
#define PART_EXTRA -2
#define PART_TMP_MFS -3
/* Defaults for things that might be defined in md.h */
#ifndef PART_ROOT
#define PART_ROOT PART_A
#endif
#ifndef PART_SWAP
#define PART_SWAP PART_B
#endif
#ifndef PART_USR
#define PART_USR PART_ANY
#endif
#ifndef DEFSWAPRAM
#define DEFSWAPRAM 32
#endif
#ifndef DEFVARSIZE
#define DEFVARSIZE 32
#endif
#ifndef DEFROOTSIZE
#define DEFROOTSIZE 32
#endif
#ifndef DEFUSRSIZE
#define DEFUSRSIZE 128
#endif
#ifndef DEFSWAPSIZE
#define DEFSWAPSIZE 128
#endif
int
save_ptn(int ptn, int start, int size, int fstype, const char *mountpt)
{
static int maxptn;
partinfo *p;
int pp;
if (maxptn == 0)
maxptn = getmaxpartitions();
if (ptn < 0 || bsdlabel[ptn].pi_fstype != FS_UNUSED) {
ptn = getrawpartition() + 1;
#ifdef PART_FIRST_FREE
if (ptn < PART_FIRST_FREE)
ptn = PART_FIRST_FREE;
#endif
for (;; ptn++) {
if (ptn >= maxptn)
return -1;
if (ptn == PART_USR)
continue;
if (bsdlabel[ptn].pi_fstype == FS_UNUSED)
break;
}
}
if (fstype == FS_UNUSED)
return ptn;
p = bsdlabel + ptn;
p->pi_offset = start;
p->pi_size = size;
set_ptype(p, fstype, mountpt ? PIF_NEWFS : 0);
if (mountpt != NULL) {
for (pp = 0; pp < maxptn; pp++) {
if (strcmp(bsdlabel[pp].pi_mount, mountpt) == 0)
bsdlabel[pp].pi_flags &= ~PIF_MOUNT;
}
strlcpy(p->pi_mount, mountpt, sizeof p->pi_mount);
p->pi_flags |= PIF_MOUNT;
}
return ptn;
}
void
set_ptn_titles(menudesc *m, int opt, void *arg)
{
struct ptn_info *pi = arg;
struct ptn_size *p;
int sm = MEG / sectorsize;
int size;
char inc_free[12];
p = &pi->ptn_sizes[opt];
if (p->mount[0] == 0) {
wprintw(m->mw, msg_string(MSG_add_another_ptn));
return;
}
size = p->size;
if (p == pi->pool_part)
snprintf(inc_free, sizeof inc_free, "(%u)",
(size + pi->free_space) / sm);
else
inc_free[0] = 0;
wprintw(m->mw, "%6u%8s%10u%10u %c %s",
size / sm, inc_free, size / dlcylsize, size,
p == pi->pool_part ? '+' : ' ', p->mount);
}
void
set_ptn_menu(struct ptn_info *pi)
{
struct ptn_size *p;
menu_ent *m;
for (m = pi->ptn_menus, p = pi->ptn_sizes;; m++, p++) {
m->opt_name = NULL;
m->opt_menu = OPT_NOMENU;
m->opt_flags = 0;
m->opt_action = set_ptn_size;
if (p->mount[0] == 0)
break;
}
if (pi->free_parts != 0)
m++;
m->opt_name = MSG_askunits;
m->opt_menu = MENU_sizechoice;
m->opt_flags = OPT_SUB;
m->opt_action = NULL;
m++;
if (pi->free_space >= 0)
snprintf(pi->exit_msg, sizeof pi->exit_msg,
msg_string(MSG_fssizesok),
pi->free_space / sizemult, multname, pi->free_parts);
else
snprintf(pi->exit_msg, sizeof pi->exit_msg,
msg_string(MSG_fssizesbad),
-pi->free_space / sizemult, multname, -pi->free_space);
set_menu_numopts(pi->menu_no, m - pi->ptn_menus);
}
int
set_ptn_size(menudesc *m, void *arg)
{
struct ptn_info *pi = arg;
struct ptn_size *p;
char answer[10];
char dflt[10];
char *cp;
int size, old_size;
int mult;
p = pi->ptn_sizes + m->cursel;
if (pi->free_parts == 0 && p->size == 0)
/* Don't allow 'free_parts' to go negative */
return 0;
if (p->mount[0] == 0) {
msg_prompt_win(MSG_askfsmount, -1, 18, 0, 0,
NULL, p->mount, sizeof p->mount);
if (p->mount[0] == 0)
return 0;
}
size = p->size;
old_size = size;
if (size == 0)
size = p->dflt_size;
size /= sizemult;
snprintf(dflt, sizeof dflt, "%d%s",
size, p == pi->pool_part ? "+" : "");
for (;;) {
mult = sizemult;
msg_prompt_win(MSG_askfssize, -1, 18, 0, 0,
dflt, answer, sizeof answer,
p->mount, multname);
/* Some special cases when /usr is first given a size */
if (old_size == 0 && !strcmp(p->mount, "/usr")) {
/* Remove space for /usr from / */
if (!pi->ptn_sizes[0].changed) {
pi->ptn_sizes[0].size -= p->dflt_size;
pi->free_space += p->dflt_size;
pi->ptn_sizes[0].changed = 1;
}
/* hack to add free space to default sized /usr */
if (!strcmp(answer, dflt)) {
size = p->dflt_size;
pi->pool_part = p;
goto adjust_free;
}
}
size = strtoul(answer, &cp, 0);
switch (*cp++) {
default:
continue;
case 's':
mult = 1;
break;
case 'c':
mult = dlcylsize;
break;
case 'm':
case 'M':
mult = MEG / sectorsize;
break;
case 'g':
case 'G':
mult = 1024 * MEG / sectorsize;
break;
case '+':
cp--;
if (cp != answer)
break;
mult = 1;
size = old_size;
break;
case 0:
cp--;
break;
}
if (*cp == 0 || *cp == '+')
break;
}
size = NUMSEC(size, mult, dlcylsize);
if (p->ptn_id == PART_TMP_MFS) {
p->size = size;
return 0;
}
if (p == pi->pool_part)
pi->pool_part = NULL;
if (*cp == '+' && p->limit == 0) {
pi->pool_part = p;
if (size == 0)
size = dlcylsize;
}
if (p->limit != 0 && size > p->limit)
size = p->limit;
adjust_free:
if (size != old_size)
p->changed = 1;
pi->free_space += old_size - size;
p->size = size;
if (size == 0) {
if (old_size != 0)
pi->free_parts++;
if (p->ptn_id == PART_EXTRA)
memmove(p, p + 1,
(char *)&pi->ptn_sizes[MAXPARTITIONS]
- (char *)p);
} else {
int f = pi->free_space;
if (old_size == 0)
pi->free_parts--;
if (f < mult && -f < mult) {
/*
* Round size to end of available space,
* but keep cylinder alignment
*/
if (f < 0)
f = -roundup(-f, dlcylsize);
else
f = rounddown(f, dlcylsize);
size += f;
if (size != 0) {
pi->free_space -= f;
p->size += f;
}
}
}
set_ptn_menu(pi);
return 0;
}
void
get_ptn_sizes(int part_start, int sectors, int no_swap)
{
int i;
int maxpart = getmaxpartitions();
int sm; /* sectors in 1MB */
struct ptn_size *p;
int size;
static struct ptn_info pi = { -1, {
#define PI_ROOT 0
{ PART_ROOT, { '/', '\0' },
DEFROOTSIZE, DEFROOTSIZE , 0, 0},
#define PI_SWAP 1
{ PART_SWAP, { 's', 'w', 'a', 'p', '\0' },
DEFSWAPSIZE, DEFSWAPSIZE, 0, 0 },
{ PART_TMP_MFS,
{ 't', 'm', 'p', ' ', '(', 'm', 'f', 's', ')', '\0' },
64, 0, 0, 0 },
#define PI_USR 3
{ PART_USR, { '/', 'u', 's', 'r', '\0' }, DEFUSRSIZE,
0, 0, 0 },
{ PART_ANY, { '/', 'v', 'a', 'r', '\0' }, DEFVARSIZE,
0, 0, 0 },
{ PART_ANY, { '/', 'h', 'o', 'm', 'e', '\0' }, 0,
0, 0, 0 },
}, {
{ NULL, OPT_NOMENU, 0, set_ptn_size },
{ MSG_askunits, MENU_sizechoice, OPT_SUB, NULL },
}, 0, 0, NULL, { 0 } };
if (maxpart > MAXPARTITIONS)
maxpart = MAXPARTITIONS; /* sanity */
msg_display(MSG_ptnsizes);
msg_table_add(MSG_ptnheaders);
if (pi.menu_no < 0) {
/* If there is a swap partition elsewhere, don't add one here.*/ if (no_swap)
pi.ptn_sizes[PI_SWAP].size = 0;
/* If installing X increase default size of /usr */
if (set_X11_selected())
pi.ptn_sizes[PI_USR].dflt_size += XNEEDMB;
/* Start of planning to give free space to / */
pi.pool_part = &pi.ptn_sizes[PI_ROOT];
/* Make size of root include default size of /usr */
pi.ptn_sizes[PI_ROOT].size += pi.ptn_sizes[PI_USR].dflt_size;
sm = MEG / sectorsize;
if (root_limit != 0) {
/* Bah - bios can not read all the disk, limit root */
pi.ptn_sizes[PI_ROOT].limit = root_limit - part_start;
/* Allocate a /usr partition if bios can't read
* everything except swap.
*/
if (pi.ptn_sizes[PI_ROOT].limit
< sectors - pi.ptn_sizes[PI_SWAP].size * sm) {
/* Root won't be able to access all the space */
/* Claw back space for /usr */
pi.ptn_sizes[PI_USR].size =
pi.ptn_sizes[PI_USR].dflt_size;
pi.ptn_sizes[PI_ROOT].size -=
pi.ptn_sizes[PI_USR].dflt_size;
pi.ptn_sizes[PI_ROOT].changed = 1;
/* Give free space to /usr */
pi.pool_part = &pi.ptn_sizes[PI_USR];
}
}
/* Change preset sizes from MB to sectors */
pi.free_space = sectors;
for (p = pi.ptn_sizes; p->mount[0]; p++) {
p->size = NUMSEC(p->size, sm, dlcylsize);
p->dflt_size = NUMSEC(p->dflt_size, sm, dlcylsize);
pi.free_space -= p->size;
}
/* Steal space from swap to make things fit.. */
if (pi.free_space < 0) {
i = roundup(-pi.free_space, dlcylsize);
if (i > pi.ptn_sizes[PI_SWAP].size)
i = pi.ptn_sizes[PI_SWAP].size;
pi.ptn_sizes[PI_SWAP].size -= i;
pi.free_space += i;
}
/* Add space for 2 system dumps to / (traditional) */
i = get_ramsize() * sm;
i = roundup(i, dlcylsize);
if (pi.free_space > i * 2)
i *= 2;
if (pi.free_space > i) {
pi.ptn_sizes[PI_ROOT].size += i;
pi.free_space -= i;
}
/* Ensure all of / is readable by the system boot code */
i = pi.ptn_sizes[PI_ROOT].limit;
if (i != 0 && (i -= pi.ptn_sizes[PI_ROOT].size) < 0) {
pi.ptn_sizes[PI_ROOT].size += i;
pi.free_space -= i;
}
/* Count free partition slots */
pi.free_parts = 0;
for (i = 0; i < maxpart; i++) {
if (bsdlabel[i].pi_size == 0)
pi.free_parts++;
}
for (i = 0; i < MAXPARTITIONS; i++) {
p = &pi.ptn_sizes[i];
if (i != 0 && p->ptn_id == 0)
p->ptn_id = PART_EXTRA;
if (p->size != 0)
pi.free_parts--;
}
pi.menu_no = new_menu(0, pi.ptn_menus, nelem(pi.ptn_menus),
3, -1, 12, 70,
MC_NOSHORTCUT |
MC_ALWAYS_SCROLL | MC_NOBOX | MC_NOCLEAR,
NULL, set_ptn_titles, NULL,
"help", pi.exit_msg);
if (pi.menu_no < 0)
return;
}
do {
set_ptn_menu(&pi);
current_cylsize = dlcylsize;
process_menu(pi.menu_no, &pi);
} while (pi.free_space < 0 || pi.free_parts < 0);
/* Give any cylinder fragment to last partition */
if (pi.pool_part != NULL || pi.free_space < dlcylsize) {
for (p = pi.ptn_sizes + nelem(pi.ptn_sizes) - 1; ;p--) {
if (p->size == 0) {
if (p == pi.ptn_sizes)
break;
continue;
}
if (p->ptn_id == PART_TMP_MFS)
continue;
p->size += pi.free_space % dlcylsize;
break;
}
}
for (p = pi.ptn_sizes; p->mount[0]; p++, part_start += size) {
size = p->size;
if (p == pi.pool_part) {
size += rounddown(pi.free_space, dlcylsize);
if (p->limit != 0 && size > p->limit)
size = p->limit;
}
i = p->ptn_id;
if (i == PART_TMP_MFS) {
tmp_mfs_size = size;
size = 0;
continue;
}
if (size == 0)
continue;
if (i == PART_SWAP) {
save_ptn(i, part_start, size, FS_SWAP, NULL);
continue;
}
save_ptn(i, part_start, size, FS_BSDFFS, p->mount);
}
}
/*
* md back-end code for menu-driven BSD disklabel editor.
*/
int
make_bsd_partitions(void)
{
int i;
int part;
int maxpart = getmaxpartitions();
int partstart;
int part_raw, part_bsd;
int ptend;
int no_swap = 0, valid_part = -1;
partinfo *p;
/*
* Initialize global variables that track space used on this disk.
* Standard 4.4BSD 8-partition labels always cover whole disk.
*/
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);
/* Set so we use the 'real' geometry for rounding, input in MB */
current_cylsize = dlcylsize;
set_sizemultname_meg();
/* Build standard partitions */
memset(&bsdlabel, 0, sizeof 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 = PART_C; /* for sanity... */
bsdlabel[part_raw].pi_offset = 0;
bsdlabel[part_raw].pi_size = dlsize;
if (part_raw == PART_D) {
/* Probably a system that expects an i386 style mbr */
part_bsd = PART_C;
bsdlabel[PART_C].pi_offset = ptstart;
bsdlabel[PART_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
#elif defined(PART_BOOT)
if (bootsize != 0) {
bsdlabel[PART_BOOT].pi_fstype = FS_BOOT;
bsdlabel[PART_BOOT].pi_size = bootsize;
bsdlabel[PART_BOOT].pi_offset = bootstart;
#if defined(PART_BOOT_PI_FLAGS)
bsdlabel[PART_BOOT].pi_flags |= PART_BOOT_PI_FLAGS;
#endif
#if defined(PART_BOOT_PI_MOUNT)
strlcpy(bsdlabel[PART_BOOT].pi_mount, PART_BOOT_PI_MOUNT,
sizeof bsdlabel[PART_BOOT].pi_mount);
#endif
}
#endif /* PART_BOOT w/o BOOT_SIZE */
#if defined(PART_SYSVBFS) && defined(SYSVBFS_SIZE)
bsdlabel[PART_SYSVBFS].pi_offset = partstart;
bsdlabel[PART_SYSVBFS].pi_fstype = FS_SYSVBFS;
bsdlabel[PART_SYSVBFS].pi_size = SYSVBFS_SIZE;
bsdlabel[PART_SYSVBFS].pi_flags |= PIF_NEWFS | PIF_MOUNT;
strlcpy(bsdlabel[PART_SYSVBFS].pi_mount, "/stand",
sizeof bsdlabel[PART_SYSVBFS].pi_mount);
partstart += SYSVBFS_SIZE;
#endif
#ifdef PART_REST
bsdlabel[PART_REST].pi_offset = 0;
bsdlabel[PART_REST].pi_size = ptstart;
#endif
if (layoutkind == 4) {
/*
* If 'oldlabel' is a default label created by the kernel it
* will have exactly one valid partition besides raw_part
* which covers the whole disk - but might lie outside the
* mbr partition we (by now) have offset by a few sectors.
* Check for this and and fix ut up.
*/
valid_part = -1;
for (i = 0; i < maxpart; i++) {
if (i == part_raw)
continue;
if (oldlabel[i].pi_size > 0 && PI_ISBSDFS(&oldlabel[i])) {
if (valid_part >= 0) {
/* nope, not the default case */
valid_part = -1;
break;
}
valid_part = i;
}
}
if (valid_part >= 0 && oldlabel[valid_part].pi_offset < ptstart) {
oldlabel[valid_part].pi_offset = ptstart;
oldlabel[valid_part].pi_size -= ptstart;
}
}
/*
* Save any partitions that are outside the area we are
* going to use.
* In particular this saves details of the other MBR
* partitions 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;
if (layoutkind == 4 && i == valid_part) {
int fstype = p->pi_fstype;
p->pi_fstype = 0;
strcpy(p->pi_mount, "/");
set_ptype(p, fstype, PIF_NEWFS);
}
}
} else {
if (p->pi_offset < ptstart + ptsize &&
p->pi_offset + p->pi_size > ptstart)
/* Not outside area we are allocating */
continue;
if (p->pi_fstype == FS_SWAP)
no_swap = 1;
}
bsdlabel[i] = oldlabel[i];
}
if (layoutkind != 4)
get_ptn_sizes(partstart, ptend - partstart, no_swap);
/*
* 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, bsddiskname, bsddiskname, sizeof bsddiskname);
/* save label to disk for MI code to update. */
(void) savenewlabel(bsdlabel, maxpart);
/* Everything looks OK. */
return (1);
}
Reference in New Issue View Git Blame Copy Permalink