/* $OpenBSD: part.c,v 1.23 2001/06/23 04:27:30 kjell Exp $ */ /* * Copyright (c) 1997 Tobias Weingartner * All rights reserved. * * 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 by Tobias Weingartner. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. */ #include #include #include #include #include #include #include #include #include #include "disk.h" #include "misc.h" #include "mbr.h" static const struct part_type { int type; char sname[14]; char *lname; } part_types[] = { { 0x00, "unused ", "unused"}, { 0x01, "DOS FAT-12 ", "Primary DOS with 12 bit FAT"}, { 0x02, "XENIX / ", "XENIX / filesystem"}, { 0x03, "XENIX /usr ", "XENIX /usr filesystem"}, { 0x04, "DOS FAT-16 ", "Primary DOS with 16 bit FAT"}, { 0x05, "Extended DOS", "Extended DOS"}, { 0x06, "DOS > 32MB ", "Primary 'big' DOS (> 32MB)"}, { 0x07, "HPFS/QNX/AUX", "OS/2 HPFS, QNX-2 or Advanced UNIX"}, { 0x08, "AIX fs ", "AIX filesystem"}, { 0x09, "AIX/Coherent", "AIX boot partition or Coherent"}, { 0x0A, "OS/2 Bootmgr", "OS/2 Boot Manager or OPUS"}, { 0x0B, "Win95 FAT-32", "Primary Win95 w/ 32-bit FAT"}, { 0x0C, "Win95 FAT32L", "Primary Win95 w/ 32-bit FAT LBA-mapped"}, { 0x0E, "DOS FAT-16 ", "Primary DOS w/ 16-bit FAT, CHS-mapped"}, { 0x0F, "Extended LBA", "Extended DOS LBA-mapped"}, { 0x10, "OPUS ", "OPUS"}, { 0x11, "OS/2 hidden ", "OS/2 BM: hidden DOS 12-bit FAT"}, { 0x12, "Compaq Diag.", "Compaq Diagnostics"}, { 0x14, "OS/2 hidden ", "OS/2 BM: hidden DOS 16-bit FAT <32M or Novell DOS 7.0 bug"}, { 0x16, "OS/2 hidden ", "OS/2 BM: hidden DOS 16-bit FAT >=32M"}, { 0x17, "OS/2 hidden ", "OS/2 BM: hidden IFS"}, { 0x18, "AST swap ", "AST Windows swapfile"}, { 0x19, "Willowtech ", "Willowtech Photon coS"}, { 0x20, "Willowsoft ", "Willowsoft OFS1"}, { 0x24, "NEC DOS ", "NEC DOS"}, { 0x38, "Theos ", "Theos"}, { 0x39, "Plan 9 ", "Plan 9"}, { 0x40, "VENIX 286 ", "VENIX 286 or LynxOS"}, { 0x41, "Lin/Minux DR", "Linux/MINIX (sharing disk with DRDOS) or Personal RISC boot"}, { 0x42, "LinuxSwap DR", "SFS or Linux swap (sharing disk with DRDOS)"}, { 0x43, "Linux DR ", "Linux native (sharing disk with DRDOS)"}, { 0x4D, "QNX 4.2 Pri ", "QNX 4.2 Primary"}, { 0x4E, "QNX 4.2 Sec ", "QNX 4.2 Secondary"}, { 0x4F, "QNX 4.2 Ter ", "QNX 4.2 Tertiary"}, { 0x50, "DM ", "DM (disk manager)"}, { 0x51, "DM ", "DM6 Aux1 (or Novell)"}, { 0x52, "CP/M or SysV", "CP/M or Microport SysV/AT"}, { 0x53, "DM ", "DM6 Aux3"}, { 0x54, "Ontrack ", "Ontrack"}, { 0x55, "EZ-Drive ", "EZ-Drive (disk manager)"}, { 0x56, "Golden Bow ", "Golden Bow (disk manager)"}, { 0x5C, "Priam ", "Priam Edisk (disk manager)"}, { 0x61, "SpeedStor ", "SpeedStor"}, { 0x63, "ISC, HURD, *", "ISC, System V/386, GNU HURD or Mach"}, { 0x64, "Netware 2.xx", "Novell Netware 2.xx"}, { 0x65, "Netware 3.xx", "Novell Netware 3.xx"}, { 0x66, "Netware 386 ", "Novell 386 Netware"}, { 0x67, "Novell ", "Novell"}, { 0x68, "Novell ", "Novell"}, { 0x69, "Novell ", "Novell"}, { 0x70, "DiskSecure ", "DiskSecure Multi-Boot"}, { 0x75, "PCIX ", "PCIX"}, { 0x80, "Minix (old) ", "Minix 1.1 ... 1.4a"}, { 0x81, "Minix (new) ", "Minix 1.4b ... 1.5.10"}, { 0x82, "Linux swap ", "Linux swap"}, { 0x83, "Linux files*", "Linux filesystem"}, { 0x93, "Amoeba file*", "Amoeba filesystem"}, { 0x94, "Amoeba BBT ", "Amoeba bad block table"}, { 0x84, "OS/2 hidden ", "OS/2 hidden C: drive"}, { 0x85, "Linux ext. ", "Linux extended"}, { 0x86, "NT FAT VS ", "NT FAT volume set"}, { 0x87, "NTFS VS ", "NTFS volume set or HPFS mirrored"}, { 0x93, "Amoeba FS ", "Amoeba filesystem"}, { 0x94, "Amoeba BBT ", "Amoeba bad block table"}, { 0x99, "Mylex ", "Mylex EISA SCSI"}, { 0x9F, "BSDI ", "BSDI BSD/OS"}, { 0xA0, "NotebookSave", "Phoenix NoteBIOS save-to-disk"}, { 0xA5, "FreeBSD ", "FreeBSD"}, { 0xA6, "OpenBSD ", "OpenBSD"}, { 0xA7, "NEXTSTEP ", "NEXTSTEP"}, { 0xA9, "NetBSD ", "NetBSD"}, { 0xB7, "BSDI filesy*", "BSDI BSD/386 filesystem"}, { 0xB8, "BSDI swap ", "BSDI BSD/386 swap"}, { 0xC0, "CTOS ", "CTOS"}, { 0xC1, "DRDOSs FAT12", "DRDOS/sec (FAT-12)"}, { 0xC4, "DRDOSs < 32M", "DRDOS/sec (FAT-16, < 32M)"}, { 0xC6, "DRDOSs >=32M", "DRDOS/sec (FAT-16, >= 32M)"}, { 0xC7, "HPFS Disbled", "Syrinx (Cyrnix?) or HPFS disabled"}, { 0xDB, "CPM/C.DOS/C*", "Concurrent CPM or C.DOS or CTOS"}, { 0xE1, "SpeedStor ", "DOS access or SpeedStor 12-bit FAT extended partition"}, { 0xE3, "SpeedStor ", "DOS R/O or SpeedStor or Storage Dimensions"}, { 0xE4, "SpeedStor ", "SpeedStor 16-bit FAT extended partition < 1024 cyl."}, { 0xEB, "BeOS/i386 ", "BeOS for Intel"}, { 0xF1, "SpeedStor ", "SpeedStor or Storage Dimensions"}, { 0xF2, "DOS 3.3+ Sec", "DOS 3.3+ Secondary"}, { 0xF4, "SpeedStor ", "SpeedStor >1024 cyl. or LANstep or IBM PS/2 IML"}, { 0xFF, "Xenix BBT ", "Xenix Bad Block Table"}, }; void PRT_printall() { int i, idrows; idrows = ((sizeof(part_types)/sizeof(struct part_type))+3)/4; printf("Choose from the following Partition id values:\n"); for (i = 0; i < idrows; i++) { printf("%02X %s %02X %s %02X %s" , part_types[i ].type, part_types[i ].sname , part_types[i+idrows ].type, part_types[i+idrows ].sname , part_types[i+idrows*2].type, part_types[i+idrows*2].sname ); if ((i+idrows*3) < (sizeof(part_types)/sizeof(struct part_type))) { printf(" %02X %s\n" , part_types[i+idrows*3].type, part_types[i+idrows*3].sname ); } else printf( "\n" ); } } const char * PRT_ascii_id(id) int id; { static char unknown[] = ""; int i; for (i = 0; i < sizeof(part_types)/sizeof(struct part_type); i++) { if (part_types[i].type == id) return (part_types[i].sname); } return (unknown); } void PRT_parse(disk, prt, offset, reloff, partn, pn) disk_t *disk; void *prt; off_t offset; off_t reloff; prt_t *partn; int pn; { unsigned char *p = prt; off_t off; partn->flag = *p++; partn->shead = *p++; partn->ssect = (*p) & 0x3F; partn->scyl = ((*p << 2) & 0xFF00) | (*(p+1)); p += 2; partn->id = *p++; partn->ehead = *p++; partn->esect = (*p) & 0x3F; partn->ecyl = ((*p << 2) & 0xFF00) | (*(p+1)); p += 2; if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL)) off = reloff; else off = offset; partn->bs = getlong(p) + off; partn->ns = getlong(p+4); PRT_fix_CHS(disk, partn, pn); } int PRT_check_chs(partn) prt_t *partn; { if ( (partn->shead > 255) || (partn->ssect >63) || (partn->scyl > 1023) || (partn->ehead >255) || (partn->esect >63) || (partn->ecyl > 1023) ) { return 0; } return 1; } void PRT_make(partn, offset, reloff, prt) prt_t *partn; off_t offset; off_t reloff; void *prt; { unsigned char *p = prt; prt_t tmp; off_t off; tmp.shead = partn->shead; tmp.ssect = partn->ssect; tmp.scyl = (partn->scyl > 1023)? 1023: partn->scyl; tmp.ehead = partn->ehead; tmp.esect = partn->ssect; tmp.ecyl = (partn->ecyl > 1023)? 1023: partn->ecyl; if (!PRT_check_chs(partn) && PRT_check_chs(&tmp)) { partn->shead = tmp.shead; partn->ssect = tmp.ssect; partn->scyl = tmp.scyl; partn->ehead = tmp.ehead; partn->esect = tmp.esect; partn->ecyl = tmp.ecyl; printf("Cylinder values are modified to fit in CHS.\n"); } if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL)) off = reloff; else off = offset; if (PRT_check_chs(partn)) { *p++ = partn->flag & 0xFF; *p++ = partn->shead & 0xFF; *p++ = (partn->ssect & 0x3F) | ((partn->scyl & 0x300) >> 2); *p++ = partn->scyl & 0xFF; *p++ = partn->id & 0xFF; *p++ = partn->ehead & 0xFF; *p++ = (partn->esect & 0x3F) | ((partn->ecyl & 0x300) >> 2); *p++ = partn->ecyl & 0xFF; } else { /* should this really keep flag, id and set others to 0xff? */ *p++ = partn->flag & 0xFF; *p++ = 0xFF; *p++ = 0xFF; *p++ = 0xFF; *p++ = partn->id & 0xFF; *p++ = 0xFF; *p++ = 0xFF; *p++ = 0xFF; printf("Warning CHS values out of bounds only saving LBA values\n"); } putlong(p, partn->bs - off); putlong(p+4, partn->ns); } void PRT_print(num, partn) int num; prt_t *partn; { if (partn == NULL) { printf(" Starting Ending\n"); printf(" #: id cyl hd sec - cyl hd sec [ start - size]\n"); printf("------------------------------------------------------------------------\n"); } else { printf("%c%1d: %.2X %4d %3d %3d - %4d %3d %3d [%10d - %10d] %s\n", (partn->flag == 0x80)?'*':' ', num, partn->id, partn->scyl, partn->shead, partn->ssect, partn->ecyl, partn->ehead, partn->esect, partn->bs, partn->ns, PRT_ascii_id(partn->id)); } } void PRT_fix_BN(disk, part, pn) disk_t *disk; prt_t *part; int pn; { int spt, tpc, spc; int start = 0; int end = 0; /* Zero out entry if not used */ if (part->id == DOSPTYP_UNUSED ) { memset(part, 0, sizeof(*part)); return; } /* Disk metrics */ spt = disk->real->sectors; tpc = disk->real->heads; spc = spt * tpc; start += part->scyl * spc; start += part->shead * spt; start += part->ssect - 1; end += part->ecyl * spc; end += part->ehead * spt; end += part->esect - 1; /* XXX - Should handle this... */ if (start > end) warn("Start of partition #%d after end!", pn); part->bs = start; part->ns = (end - start) + 1; } void PRT_fix_CHS(disk, part, pn) disk_t *disk; prt_t *part; int pn; { int spt, tpc, spc; int start, end, size; int cyl, head, sect; /* Zero out entry if not used */ if (part->id == DOSPTYP_UNUSED ) { memset(part, 0, sizeof(*part)); return; } /* Disk metrics */ spt = disk->real->sectors; tpc = disk->real->heads; spc = spt * tpc; start = part->bs; size = part->ns; end = (start + size) - 1; /* Figure out starting CHS values */ cyl = (start / spc); start -= (cyl * spc); head = (start / spt); start -= (head * spt); sect = (start + 1); if (cyl > 1023) { cyl = 1023; printf("Only LBA values are valid in starting cylinder for partition #%d.\n", pn); } part->scyl = cyl; part->shead = head; part->ssect = sect; /* Figure out ending CHS values */ cyl = (end / spc); end -= (cyl * spc); head = (end / spt); end -= (head * spt); sect = (end + 1); if (cyl > 1023) { cyl = 1023; printf("Only LBA values are valid in ending cylinder for partition #%d.\n", pn); } part->ecyl = cyl; part->ehead = head; part->esect = sect; }