/* $NetBSD: mbr.c,v 1.6 1998/02/24 05:36:03 jonathan Exp $ */ /* * Copyright 1997 Piermont Information Systems Inc. * All rights reserved. * * Copyright 1997 Piermont Information Systems Inc. * All rights reserved. * * 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 develooped 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. * */ /* mbr.c -- DOS Master Boot Record editing code */ #include #include #include "defs.h" #include "md.h" #include "msg_defs.h" #include "menu_defs.h" struct part_id { int id; char *name; } part_ids[] = { {0, "unused"}, {1, "Primary DOS, 12 bit FAT"}, {4, "Primary DOS, 16 bit FAT <32M"}, {5, "Extended DOS"}, {6, "Primary DOS, 16-bit FAT >32MB"}, {7, "NTFS"}, {131, "Linux native"}, {131, "Linux swap"}, {165, "NetBSD/FreeBSD/386bsd"}, {169, "new NetBSD"}, {-1, "Unknown"}, }; /* * Define symbolic name for MBR IDs if undefined, for backwards * source compatibility. */ #ifndef DOSPTYP_NETBSD #define DOSPTYP_NETBSD 0xa9 #endif #ifndef DOSPTYP_386BSD #define DOSPTYP_386BSD 0xa5 #endif /* * Which MBR partition ID to use for a newly-created NetBSD partition. * Left patchable as we're in the middle of changing partition IDs. */ #ifdef notyet #define DOSPTYP_OURS DOSPTYP_NETBSD /* NetBSD >= 1.3D */ #else #define DOSPTYP_OURS DOSPTYP_386BSD /* 386bsd, FreeBSD, old NetBSD */ #endif int dosptyp_nbsd = DOSPTYP_OURS; /* prototypes */ int otherpart(int id); int ourpart(int id); int edit_mbr __P((void)); /* * First, geometry stuff... */ int check_geom (void) { return bcyl <= 1024 && bsec < 64 && bcyl > 0 && bhead > 0 && bsec > 0; } /* * get C/H/S geometry from user via menu interface and * store in globals. */ void set_fdisk_geom (void) { char res[80]; msg_display_add(MSG_setbiosgeom); disp_cur_geom(); msg_printf_add ("\n"); msg_prompt_add (MSG_cylinders, NULL, res, 80); bcyl = atoi(res); msg_prompt_add (MSG_heads, NULL, res, 80); bhead = atoi(res); msg_prompt_add (MSG_sectors, NULL, res, 80); bsec = atoi(res); bstuffset = 1; } void disp_cur_geom (void) { msg_display_add(MSG_realgeom, dlcyl, dlhead, dlsec); msg_display_add(MSG_biosgeom, bcyl, bhead, bsec); } /* * Then, the partition stuff... */ int otherpart(int id) { return (id != 0 && id != DOSPTYP_386BSD && id != DOSPTYP_NETBSD); } int ourpart(int id) { return (id != 0 && (id == DOSPTYP_386BSD || id == DOSPTYP_NETBSD)); } /* * Let user change incore Master Boot Record partitions via menu. */ int edit_mbr() { int i, j; /* Ask full/part */ msg_display (MSG_fullpart, diskdev); process_menu (MENU_fullpart); /* DOS fdisk label checking and value setting. */ if (usefull) { int otherparts = 0; int ourparts = 0; int i; /* Count nonempty, non-BSD partitions. */ for (i = 0; i < 4; i++) { otherparts += otherpart(part[0][ID]); /* check for dualboot *bsd too */ ourparts += ourpart(part[0][ID]); } /* Ask if we really want to blow away non-NetBSD stuff */ if (otherparts != 0 || ourparts > 1) { msg_display (MSG_ovrwrite); process_menu (MENU_noyes); if (!yesno) { endwin(); return 0; } } /* Set the partition information for full disk usage. */ part[0][ID] = part[0][SIZE] = 0; part[0][SET] = 1; part[1][ID] = part[1][SIZE] = 0; part[1][SET] = 1; part[2][ID] = part[2][SIZE] = 0; part[2][SET] = 1; part[3][ID] = dosptyp_nbsd; part[3][SIZE] = bsize - bsec; part[3][START] = bsec; part[3][FLAG] = 0x80; part[3][SET] = 1; ptstart = bsec; ptsize = bsize - bsec; fsdsize = dlsize; fsptsize = dlsize - bsec; fsdmb = fsdsize / MEG; activepart = 3; } else { int numbsd, overlap; int numfreebsd, freebsdpart; /* dual-boot */ /* Ask for sizes, which partitions, ... */ ask_sizemult(); bsdpart = freebsdpart = -1; activepart = -1; for (i=0; i<4; i++) if (part[i][FLAG] != 0) activepart = i; do { process_menu (MENU_editparttable); numbsd = 0; bsdpart = -1; freebsdpart = -1; numfreebsd = 0; overlap = 0; yesno = 0; for (i=0; i<4; i++) { /* Count 386bsd/FreeBSD/NetBSD partitions */ if (part[i][ID] == DOSPTYP_386BSD) { freebsdpart = i; numfreebsd++; } /* Count NetBSD-only partitions */ if (part[i][ID] == DOSPTYP_NETBSD) { bsdpart = i; numbsd++; } for (j = i+1; j<4; j++) if (partsoverlap(i,j)) overlap = 1; } /* If no new-NetBSD partition, use 386bsd instead */ if (numbsd == 0 && numfreebsd > 0) { numbsd = numfreebsd; bsdpart = freebsdpart; /* XXX check partition type? */ } /* Check for overlap or multiple native partitions */ if (overlap || numbsd != 1) { msg_display (MSG_reeditpart); process_menu (MENU_yesno); } } while (yesno && (numbsd != 1 || overlap)); if (numbsd == 0) { msg_display (MSG_nobsdpart); process_menu (MENU_ok); return 0; } if (numbsd > 1) { msg_display (MSG_multbsdpart, bsdpart); process_menu (MENU_ok); } ptstart = part[bsdpart][START]; ptsize = part[bsdpart][SIZE]; fsdsize = dlsize; if (ptstart + ptsize < bsize) fsptsize = ptsize; else fsptsize = dlsize - ptstart; fsdmb = fsdsize / MEG; /* Ask if a boot selector is wanted. XXXX */ } /* Compute minimum NetBSD partition sizes (in sectors). */ minfsdmb = (80 + 4*rammb) * (MEG / sectorsize); if (usefull) swapadj = bsec; return 1; } int partsoverlap(int i, int j) { if (part[i][SIZE] == 0 || part[j][SIZE] == 0) return 0; return (part[i][START] < part[j][START] && part[i][START] + part[i][SIZE] > part[j][START]) || (part[i][START] > part[j][START] && part[i][START] < part[j][START] + part[j][SIZE]) || (part[i][START] == part[j][START]); } void disp_cur_part(int sel, int disp) { int i, j, start, stop, rsize, rend; if (disp < 0) start = 0, stop = 4; else start = disp, stop = disp+1; msg_display_add (MSG_part_head, multname, multname, multname); for (i=start; i