/* $OpenBSD: part.c,v 1.42 2006/06/09 17:01:47 deraadt 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. * * 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 #include "disk.h" #include "misc.h" #include "mbr.h" int PRT_check_chs(prt_t *partn); static const struct part_type { int type; char sname[14]; } 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 */ { 0x1C, "Thinkpad Rec"}, /* IBM Thinkpad recovery partition */ { 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 */ { 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 */ { 0xA8, "MacOS X "}, /* MacOS X main partition */ { 0xA9, "NetBSD "}, /* NetBSD */ { 0xAB, "MacOS X boot"}, /* MacOS X boot partition */ { 0xB7, "BSDI filesy*"}, /* BSDI BSD/386 filesystem */ { 0xB8, "BSDI swap "}, /* BSDI BSD/386 swap */ { 0xBF, "Solaris "}, /* Solaris */ { 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 */ { 0xDE, "Dell Maint "}, /* Dell maintenance partition */ { 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 */ { 0xEE, "EFI GPT "}, /* EFI Protective Partition */ { 0xEF, "EFI Sys "}, /* EFI System Partition */ { 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(void) { 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(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_t *disk, void *prt, off_t offset, off_t reloff, prt_t *partn) { 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); } int PRT_check_chs(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(prt_t *partn, off_t offset, off_t reloff, void *prt) { unsigned char *p = prt; int ecsave, scsave; int modified = 0; off_t off; if ((partn->scyl > 1023) || (partn->ecyl > 1023)) { scsave = partn->scyl; ecsave = partn->ecyl; partn->scyl = (partn->scyl > 1023)? 1023: partn->scyl; partn->ecyl = (partn->ecyl > 1023)? 1023: partn->ecyl; modified = 1; } 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); if (modified) { partn->scyl = scsave; partn->ecyl = ecsave; } } void PRT_print(int num, prt_t *partn, char *units) { double size; int i; i = unit_lookup(units); if (partn == NULL) { printf(" Starting Ending LBA Info:\n"); printf(" #: id C H S - C H S [ start: size ]\n"); printf("------------------------------------------------------------------------\n"); } else { size = ((double)partn->ns * unit_types[SECTORS].conversion) / unit_types[i].conversion; printf("%c%1d: %.2X %4u %3u %2u - %4u %3u %2u [%12u:%12.0f%s] %s\n", (partn->flag == 0x80)?'*':' ', num, partn->id, partn->scyl, partn->shead, partn->ssect, partn->ecyl, partn->ehead, partn->esect, partn->bs, size, unit_types[i].abbr, PRT_ascii_id(partn->id)); } } void PRT_fix_BN(disk_t *disk, prt_t *part, int pn) { u_int32_t spt, tpc, spc; u_int32_t start = 0; u_int32_t 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_t *disk, prt_t *part) { u_int32_t spt, tpc, spc; u_int32_t start, end, size; u_int32_t 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); 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); part->ecyl = cyl; part->ehead = head; part->esect = sect; }