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-rw-r--r--sbin/i386/fdisk/fdisk.c1509
1 files changed, 0 insertions, 1509 deletions
diff --git a/sbin/i386/fdisk/fdisk.c b/sbin/i386/fdisk/fdisk.c
deleted file mode 100644
index 35d4ee4..0000000
--- a/sbin/i386/fdisk/fdisk.c
+++ /dev/null
@@ -1,1509 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1992 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-
-#ifndef lint
-static const char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-#include <sys/disklabel.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/mount.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <err.h>
-#include <errno.h>
-#include <paths.h>
-#include <regex.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-int iotest;
-
-#define LBUF 100
-static char lbuf[LBUF];
-
-#define MBRSIGOFF 510
-
-/*
- *
- * Ported to 386bsd by Julian Elischer Thu Oct 15 20:26:46 PDT 1992
- *
- * 14-Dec-89 Robert Baron (rvb) at Carnegie-Mellon University
- * Copyright (c) 1989 Robert. V. Baron
- * Created.
- */
-
-#define Decimal(str, ans, tmp) if (decimal(str, &tmp, ans)) ans = tmp
-#define Hex(str, ans, tmp) if (hex(str, &tmp, ans)) ans = tmp
-#define String(str, ans, len) {char *z = ans; char **dflt = &z; if (string(str, dflt)) strncpy(ans, *dflt, len); }
-
-#define RoundCyl(x) ((((x) + cylsecs - 1) / cylsecs) * cylsecs)
-
-#define MAX_SEC_SIZE 2048 /* maximum section size that is supported */
-#define MIN_SEC_SIZE 512 /* the sector size to start sensing at */
-int secsize = 0; /* the sensed sector size */
-
-char *disk;
-
-struct disklabel disklabel; /* disk parameters */
-
-int cyls, sectors, heads, cylsecs, disksecs;
-
-struct mboot
-{
- unsigned char padding[2]; /* force the longs to be long aligned */
- unsigned char *bootinst; /* boot code */
- off_t bootinst_size;
- struct dos_partition parts[4];
-};
-struct mboot mboot = {{0}, NULL, 0};
-
-#define ACTIVE 0x80
-#define BOOT_MAGIC 0xAA55
-
-int dos_cyls;
-int dos_heads;
-int dos_sectors;
-int dos_cylsecs;
-
-#define DOSSECT(s,c) ((s & 0x3f) | ((c >> 2) & 0xc0))
-#define DOSCYL(c) (c & 0xff)
-static int partition = -1;
-
-
-#define MAX_ARGS 10
-
-static int current_line_number;
-
-static int geom_processed = 0;
-static int part_processed = 0;
-static int active_processed = 0;
-
-
-typedef struct cmd {
- char cmd;
- int n_args;
- struct arg {
- char argtype;
- int arg_val;
- } args[MAX_ARGS];
-} CMD;
-
-
-static int B_flag = 0; /* replace boot code */
-static int I_flag = 0; /* use entire disk for FreeBSD */
-static int a_flag = 0; /* set active partition */
-static char *b_flag = NULL; /* path to boot code */
-static int i_flag = 0; /* replace partition data */
-static int u_flag = 0; /* update partition data */
-static int s_flag = 0; /* Print a summary and exit */
-static int t_flag = 0; /* test only, if f_flag is given */
-static char *f_flag = NULL; /* Read config info from file */
-static int v_flag = 0; /* Be verbose */
-
-struct part_type
-{
- unsigned char type;
- char *name;
-}part_types[] =
-{
- {0x00, "unused"}
- ,{0x01, "Primary DOS with 12 bit FAT"}
- ,{0x02, "XENIX / filesystem"}
- ,{0x03, "XENIX /usr filesystem"}
- ,{0x04, "Primary DOS with 16 bit FAT (<= 32MB)"}
- ,{0x05, "Extended DOS"}
- ,{0x06, "Primary 'big' DOS (> 32MB)"}
- ,{0x07, "OS/2 HPFS, NTFS, QNX-2 (16 bit) or Advanced UNIX"}
- ,{0x08, "AIX filesystem"}
- ,{0x09, "AIX boot partition or Coherent"}
- ,{0x0A, "OS/2 Boot Manager or OPUS"}
- ,{0x0B, "DOS or Windows 95 with 32 bit FAT"}
- ,{0x0C, "DOS or Windows 95 with 32 bit FAT, LBA"}
- ,{0x0E, "Primary 'big' DOS (> 32MB, LBA)"}
- ,{0x0F, "Extended DOS, LBA"}
- ,{0x10, "OPUS"}
- ,{0x39, "plan9"}
- ,{0x40, "VENIX 286"}
- ,{0x4D, "QNX 4.2 Primary"}
- ,{0x4E, "QNX 4.2 Secondary"}
- ,{0x4F, "QNX 4.2 Tertiary"}
- ,{0x50, "DM"}
- ,{0x51, "DM"}
- ,{0x52, "CP/M or Microport SysV/AT"}
- ,{0x56, "GB"}
- ,{0x61, "Speed"}
- ,{0x63, "ISC UNIX, other System V/386, GNU HURD or Mach"}
- ,{0x64, "Novell Netware 2.xx"}
- ,{0x65, "Novell Netware 3.xx"}
- ,{0x75, "PCIX"}
- ,{0x80, "Minix 1.1 ... 1.4a"}
- ,{0x81, "Minix 1.4b ... 1.5.10"}
- ,{0x82, "Linux swap or Solaris x86"}
- ,{0x83, "Linux filesystem"}
- ,{0x93, "Amoeba filesystem"}
- ,{0x94, "Amoeba bad block table"}
- ,{0x9F, "BSD/OS"}
- ,{0xA0, "Suspend to Disk"}
- ,{0xA5, "FreeBSD/NetBSD/386BSD"}
- ,{0xA6, "OpenBSD"}
- ,{0xA7, "NEXTSTEP"}
- ,{0xA9, "NetBSD"}
- ,{0xB7, "BSDI BSD/386 filesystem"}
- ,{0xB8, "BSDI BSD/386 swap"}
- ,{0xDB, "Concurrent CPM or C.DOS or CTOS"}
- ,{0xE1, "Speed"}
- ,{0xE3, "Speed"}
- ,{0xE4, "Speed"}
- ,{0xEE, "EFI GPT"}
- ,{0xEF, "EFI System Partition"}
- ,{0xF1, "Speed"}
- ,{0xF2, "DOS 3.3+ Secondary"}
- ,{0xF4, "Speed"}
- ,{0xFF, "BBT (Bad Blocks Table)"}
-};
-
-static void print_s0(int which);
-static void print_part(int i);
-static void init_sector0(unsigned long start);
-static void init_boot(void);
-static void change_part(int i);
-static void print_params();
-static void change_active(int which);
-static void change_code();
-static void get_params_to_use();
-static char *get_rootdisk(void);
-static void dos(struct dos_partition *partp);
-static int open_disk(int u_flag);
-static ssize_t read_disk(off_t sector, void *buf);
-static ssize_t write_disk(off_t sector, void *buf);
-static int get_params();
-static int read_s0();
-static int write_s0();
-static int ok(char *str);
-static int decimal(char *str, int *num, int deflt);
-static char *get_type(int type);
-static int read_config(char *config_file);
-static void reset_boot(void);
-static int sanitize_partition(struct dos_partition *);
-static void usage(void);
-#if 0
-static int hex(char *str, int *num, int deflt);
-static int string(char *str, char **ans);
-#endif
-
-
-int
-main(int argc, char *argv[])
-{
- struct stat sb;
- int c, i;
-
- while ((c = getopt(argc, argv, "BIab:f:istuv1234")) != -1)
- switch (c) {
- case 'B':
- B_flag = 1;
- break;
- case 'I':
- I_flag = 1;
- break;
- case 'a':
- a_flag = 1;
- break;
- case 'b':
- b_flag = optarg;
- break;
- case 'f':
- f_flag = optarg;
- break;
- case 'i':
- i_flag = 1;
- break;
- case 's':
- s_flag = 1;
- break;
- case 't':
- t_flag = 1;
- break;
- case 'u':
- u_flag = 1;
- break;
- case 'v':
- v_flag = 1;
- break;
- case '1':
- case '2':
- case '3':
- case '4':
- partition = c - '0';
- break;
- default:
- usage();
- }
- if (f_flag || i_flag)
- u_flag = 1;
- if (t_flag)
- v_flag = 1;
- argc -= optind;
- argv += optind;
-
- if (argc == 0) {
- disk = get_rootdisk();
- } else {
- if (stat(argv[0], &sb) == 0) {
- /* OK, full pathname given */
- disk = argv[0];
- } else if (errno == ENOENT) {
- /* Try prepending "/dev" */
- if ((disk = malloc(strlen(argv[0]) + strlen(_PATH_DEV) +
- 1)) == NULL)
- errx(1, "out of memory");
- strcpy(disk, _PATH_DEV);
- strcat(disk, argv[0]);
- } else {
- /* other stat error, let it fail below */
- disk = argv[0];
- }
- }
- if (open_disk(u_flag) < 0)
- err(1, "cannot open disk %s", disk);
-
- /* (abu)use mboot.bootinst to probe for the sector size */
- if ((mboot.bootinst = malloc(MAX_SEC_SIZE)) == NULL)
- err(1, "cannot allocate buffer to determine disk sector size");
- read_disk(0, mboot.bootinst);
- free(mboot.bootinst);
- mboot.bootinst = NULL;
-
- if (s_flag)
- {
- int i;
- struct dos_partition *partp;
-
- if (read_s0())
- err(1, "read_s0");
- printf("%s: %d cyl %d hd %d sec\n", disk, dos_cyls, dos_heads,
- dos_sectors);
- printf("Part %11s %11s Type Flags\n", "Start", "Size");
- for (i = 0; i < NDOSPART; i++) {
- partp = ((struct dos_partition *) &mboot.parts) + i;
- if (partp->dp_start == 0 && partp->dp_size == 0)
- continue;
- printf("%4d: %11lu %11lu 0x%02x 0x%02x\n", i + 1,
- (u_long) partp->dp_start,
- (u_long) partp->dp_size, partp->dp_typ,
- partp->dp_flag);
- }
- exit(0);
- }
-
- printf("******* Working on device %s *******\n",disk);
-
- if (I_flag)
- {
- struct dos_partition *partp;
-
- read_s0();
- reset_boot();
- partp = (struct dos_partition *) (&mboot.parts[0]);
- partp->dp_typ = DOSPTYP_386BSD;
- partp->dp_flag = ACTIVE;
- partp->dp_start = dos_sectors;
- partp->dp_size = (disksecs / dos_cylsecs) * dos_cylsecs -
- dos_sectors;
-
- dos(partp);
- if (v_flag)
- print_s0(-1);
- write_s0();
- exit(0);
- }
- if (f_flag)
- {
- if (read_s0() || i_flag)
- {
- reset_boot();
- }
-
- if (!read_config(f_flag))
- {
- exit(1);
- }
- if (v_flag)
- {
- print_s0(-1);
- }
- if (!t_flag)
- {
- write_s0();
- }
- }
- else
- {
- if(u_flag)
- {
- get_params_to_use();
- }
- else
- {
- print_params();
- }
-
- if (read_s0())
- init_sector0(dos_sectors);
-
- printf("Media sector size is %d\n", secsize);
- printf("Warning: BIOS sector numbering starts with sector 1\n");
- printf("Information from DOS bootblock is:\n");
- if (partition == -1)
- for (i = 1; i <= NDOSPART; i++)
- change_part(i);
- else
- change_part(partition);
-
- if (u_flag || a_flag)
- change_active(partition);
-
- if (B_flag)
- change_code();
-
- if (u_flag || a_flag || B_flag) {
- if (!t_flag)
- {
- printf("\nWe haven't changed the partition table yet. ");
- printf("This is your last chance.\n");
- }
- print_s0(-1);
- if (!t_flag)
- {
- if (ok("Should we write new partition table?"))
- write_s0();
- }
- else
- {
- printf("\n-t flag specified -- partition table not written.\n");
- }
- }
- }
-
- exit(0);
-}
-
-static void
-usage()
-{
- fprintf(stderr, "%s%s",
- "usage: fdisk [-BIaistu] [-b bootcode] [-1234] [disk]\n",
- " fdisk -f configfile [-itv] [disk]\n");
- exit(1);
-}
-
-static void
-print_s0(int which)
-{
-int i;
-
- print_params();
- printf("Information from DOS bootblock is:\n");
- if (which == -1)
- for (i = 1; i <= NDOSPART; i++)
- printf("%d: ", i), print_part(i);
- else
- print_part(which);
-}
-
-static struct dos_partition mtpart = { 0 };
-
-static void
-print_part(int i)
-{
- struct dos_partition *partp;
- u_int64_t part_mb;
-
- partp = ((struct dos_partition *) &mboot.parts) + i - 1;
-
- if (!bcmp(partp, &mtpart, sizeof (struct dos_partition))) {
- printf("<UNUSED>\n");
- return;
- }
- /*
- * Be careful not to overflow.
- */
- part_mb = partp->dp_size;
- part_mb *= secsize;
- part_mb /= (1024 * 1024);
- printf("sysid %d,(%s)\n", partp->dp_typ, get_type(partp->dp_typ));
- printf(" start %lu, size %lu (%qd Meg), flag %x%s\n",
- (u_long)partp->dp_start,
- (u_long)partp->dp_size,
- part_mb,
- partp->dp_flag,
- partp->dp_flag == ACTIVE ? " (active)" : "");
- printf("\tbeg: cyl %d/ head %d/ sector %d;\n\tend: cyl %d/ head %d/ sector %d\n"
- ,DPCYL(partp->dp_scyl, partp->dp_ssect)
- ,partp->dp_shd
- ,DPSECT(partp->dp_ssect)
- ,DPCYL(partp->dp_ecyl, partp->dp_esect)
- ,partp->dp_ehd
- ,DPSECT(partp->dp_esect));
-}
-
-
-static void
-init_boot(void)
-{
- const char *fname;
- int fd, n;
- struct stat sb;
-
- fname = b_flag ? b_flag : "/boot/mbr";
- if ((fd = open(fname, O_RDONLY)) == -1 ||
- fstat(fd, &sb) == -1)
- err(1, "%s", fname);
- if ((mboot.bootinst_size = sb.st_size) % secsize != 0)
- errx(1, "%s: length must be a multiple of sector size", fname);
- if (mboot.bootinst != NULL)
- free(mboot.bootinst);
- if ((mboot.bootinst = malloc(mboot.bootinst_size = sb.st_size)) == NULL)
- errx(1, "%s: unable to allocate read buffer", fname);
- if ((n = read(fd, mboot.bootinst, mboot.bootinst_size)) == -1 ||
- close(fd))
- err(1, "%s", fname);
- if (n != mboot.bootinst_size)
- errx(1, "%s: short read", fname);
-}
-
-
-static void
-init_sector0(unsigned long start)
-{
-struct dos_partition *partp = (struct dos_partition *) (&mboot.parts[3]);
-
- init_boot();
-
- partp->dp_typ = DOSPTYP_386BSD;
- partp->dp_flag = ACTIVE;
- start = ((start + dos_sectors - 1) / dos_sectors) * dos_sectors;
- if(start == 0)
- start = dos_sectors;
- partp->dp_start = start;
- partp->dp_size = (disksecs / dos_cylsecs) * dos_cylsecs - start;
-
- dos(partp);
-}
-
-static void
-change_part(int i)
-{
-struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1;
-
- printf("The data for partition %d is:\n", i);
- print_part(i);
-
- if (u_flag && ok("Do you want to change it?")) {
- int tmp;
-
- if (i_flag) {
- bzero((char *)partp, sizeof (struct dos_partition));
- if (i == 4) {
- init_sector0(1);
- printf("\nThe static data for the DOS partition 4 has been reinitialized to:\n");
- print_part(i);
- }
- }
-
- do {
- Decimal("sysid (165=FreeBSD)", partp->dp_typ, tmp);
- Decimal("start", partp->dp_start, tmp);
- Decimal("size", partp->dp_size, tmp);
- if (!sanitize_partition(partp)) {
- warnx("ERROR: failed to adjust; setting sysid to 0");
- partp->dp_typ = 0;
- }
-
- if (ok("Explicitly specify beg/end address ?"))
- {
- int tsec,tcyl,thd;
- tcyl = DPCYL(partp->dp_scyl,partp->dp_ssect);
- thd = partp->dp_shd;
- tsec = DPSECT(partp->dp_ssect);
- Decimal("beginning cylinder", tcyl, tmp);
- Decimal("beginning head", thd, tmp);
- Decimal("beginning sector", tsec, tmp);
- partp->dp_scyl = DOSCYL(tcyl);
- partp->dp_ssect = DOSSECT(tsec,tcyl);
- partp->dp_shd = thd;
-
- tcyl = DPCYL(partp->dp_ecyl,partp->dp_esect);
- thd = partp->dp_ehd;
- tsec = DPSECT(partp->dp_esect);
- Decimal("ending cylinder", tcyl, tmp);
- Decimal("ending head", thd, tmp);
- Decimal("ending sector", tsec, tmp);
- partp->dp_ecyl = DOSCYL(tcyl);
- partp->dp_esect = DOSSECT(tsec,tcyl);
- partp->dp_ehd = thd;
- } else
- dos(partp);
-
- print_part(i);
- } while (!ok("Are we happy with this entry?"));
- }
-}
-
-static void
-print_params()
-{
- printf("parameters extracted from in-core disklabel are:\n");
- printf("cylinders=%d heads=%d sectors/track=%d (%d blks/cyl)\n\n"
- ,cyls,heads,sectors,cylsecs);
- if((dos_sectors > 63) || (dos_cyls > 1023) || (dos_heads > 255))
- printf("Figures below won't work with BIOS for partitions not in cyl 1\n");
- printf("parameters to be used for BIOS calculations are:\n");
- printf("cylinders=%d heads=%d sectors/track=%d (%d blks/cyl)\n\n"
- ,dos_cyls,dos_heads,dos_sectors,dos_cylsecs);
-}
-
-static void
-change_active(int which)
-{
- struct dos_partition *partp = &mboot.parts[0];
- int active, i, new, tmp;
-
- active = -1;
- for (i = 0; i < NDOSPART; i++) {
- if ((partp[i].dp_flag & ACTIVE) == 0)
- continue;
- printf("Partition %d is marked active\n", i + 1);
- if (active == -1)
- active = i + 1;
- }
- if (a_flag && which != -1)
- active = which;
- else if (active == -1)
- active = 1;
-
- if (!ok("Do you want to change the active partition?"))
- return;
-setactive:
- do {
- new = active;
- Decimal("active partition", new, tmp);
- if (new < 1 || new > 4) {
- printf("Active partition number must be in range 1-4."
- " Try again.\n");
- goto setactive;
- }
- active = new;
- } while (!ok("Are you happy with this choice"));
- for (i = 0; i < NDOSPART; i++)
- partp[i].dp_flag = 0;
- if (active > 0 && active <= NDOSPART)
- partp[active-1].dp_flag = ACTIVE;
-}
-
-static void
-change_code()
-{
- if (ok("Do you want to change the boot code?"))
- init_boot();
-}
-
-void
-get_params_to_use()
-{
- int tmp;
- print_params();
- if (ok("Do you want to change our idea of what BIOS thinks ?"))
- {
- do
- {
- Decimal("BIOS's idea of #cylinders", dos_cyls, tmp);
- Decimal("BIOS's idea of #heads", dos_heads, tmp);
- Decimal("BIOS's idea of #sectors", dos_sectors, tmp);
- dos_cylsecs = dos_heads * dos_sectors;
- print_params();
- }
- while(!ok("Are you happy with this choice"));
- }
-}
-
-
-/***********************************************\
-* Change real numbers into strange dos numbers *
-\***********************************************/
-static void
-dos(partp)
- struct dos_partition *partp;
-{
- int cy, sec;
- u_int32_t end;
-
- if (partp->dp_typ == 0 && partp->dp_start == 0 &&
- partp->dp_size == 0) {
- bcopy(partp, &mtpart, sizeof(*partp));
- return;
- }
-
- /* Start c/h/s. */
- partp->dp_shd = partp->dp_start % dos_cylsecs / dos_sectors;
- cy = partp->dp_start / dos_cylsecs;
- sec = partp->dp_start % dos_sectors + 1;
- partp->dp_scyl = DOSCYL(cy);
- partp->dp_ssect = DOSSECT(sec, cy);
-
- /* End c/h/s. */
- end = partp->dp_start + partp->dp_size - 1;
- partp->dp_ehd = end % dos_cylsecs / dos_sectors;
- cy = end / dos_cylsecs;
- sec = end % dos_sectors + 1;
- partp->dp_ecyl = DOSCYL(cy);
- partp->dp_esect = DOSSECT(sec, cy);
-}
-
-int fd;
-
- /* Getting device status */
-
-static int
-open_disk(int u_flag)
-{
- struct stat st;
-
- if (stat(disk, &st) == -1) {
- if (errno == ENOENT)
- return -2;
- warnx("can't get file status of %s", disk);
- return -1;
- }
- if ( !(st.st_mode & S_IFCHR) )
- warnx("device %s is not character special", disk);
- if ((fd = open(disk,
- a_flag || I_flag || B_flag || u_flag ? O_RDWR : O_RDONLY)) == -1) {
- if(errno == ENXIO)
- return -2;
- warnx("can't open device %s", disk);
- return -1;
- }
- if (get_params(0) == -1) {
- warnx("can't get disk parameters on %s", disk);
- return -1;
- }
- return fd;
-}
-
-static ssize_t
-read_disk(off_t sector, void *buf)
-{
- lseek(fd,(sector * 512), 0);
- if( secsize == 0 )
- for( secsize = MIN_SEC_SIZE; secsize <= MAX_SEC_SIZE; secsize *= 2 )
- {
- /* try the read */
- int size = read(fd, buf, secsize);
- if( size == secsize )
- /* it worked so return */
- return secsize;
- }
- else
- return read( fd, buf, secsize );
-
- /* we failed to read at any of the sizes */
- return -1;
-}
-
-static ssize_t
-write_disk(off_t sector, void *buf)
-{
- lseek(fd,(sector * 512), 0);
- /* write out in the size that the read_disk found worked */
- return write(fd, buf, secsize);
-}
-
-static int
-get_params()
-{
-
- if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
- warnx("can't get disk parameters on %s; supplying dummy ones", disk);
- dos_cyls = cyls = 1;
- dos_heads = heads = 1;
- dos_sectors = sectors = 1;
- dos_cylsecs = cylsecs = heads * sectors;
- disksecs = cyls * heads * sectors;
- return disksecs;
- }
-
- dos_cyls = cyls = disklabel.d_ncylinders;
- dos_heads = heads = disklabel.d_ntracks;
- dos_sectors = sectors = disklabel.d_nsectors;
- dos_cylsecs = cylsecs = heads * sectors;
- disksecs = cyls * heads * sectors;
-
- return (disksecs);
-}
-
-
-static int
-read_s0()
-{
- mboot.bootinst_size = secsize;
- if (mboot.bootinst != NULL)
- free(mboot.bootinst);
- if ((mboot.bootinst = malloc(mboot.bootinst_size)) == NULL) {
- warnx("unable to allocate buffer to read fdisk "
- "partition table");
- return -1;
- }
- if (read_disk(0, mboot.bootinst) == -1) {
- warnx("can't read fdisk partition table");
- return -1;
- }
- if (*(uint16_t *)&mboot.bootinst[MBRSIGOFF] != BOOT_MAGIC) {
- warnx("invalid fdisk partition table found");
- /* So should we initialize things */
- return -1;
- }
- memcpy(mboot.parts, &mboot.bootinst[DOSPARTOFF], sizeof(mboot.parts));
- return 0;
-}
-
-static int
-write_s0()
-{
-#ifdef NOT_NOW
- int flag;
-#endif
- int sector;
-
- if (iotest) {
- print_s0(-1);
- return 0;
- }
- memcpy(&mboot.bootinst[DOSPARTOFF], mboot.parts, sizeof(mboot.parts));
- /*
- * write enable label sector before write (if necessary),
- * disable after writing.
- * needed if the disklabel protected area also protects
- * sector 0. (e.g. empty disk)
- */
-#ifdef NOT_NOW
- flag = 1;
- if (ioctl(fd, DIOCWLABEL, &flag) < 0)
- warn("ioctl DIOCWLABEL");
-#endif
- for(sector = 0; sector < mboot.bootinst_size / secsize; sector++)
- if (write_disk(sector,
- &mboot.bootinst[sector * secsize]) == -1) {
- warn("can't write fdisk partition table");
- return -1;
-#ifdef NOT_NOW
- flag = 0;
- (void) ioctl(fd, DIOCWLABEL, &flag);
-#endif
- }
-#ifdef NOT_NOW
- flag = 0;
- (void) ioctl(fd, DIOCWLABEL, &flag);
-#endif
- return(0);
-}
-
-
-static int
-ok(str)
-char *str;
-{
- printf("%s [n] ", str);
- fflush(stdout);
- if (fgets(lbuf, LBUF, stdin) == NULL)
- exit(1);
- lbuf[strlen(lbuf)-1] = 0;
-
- if (*lbuf &&
- (!strcmp(lbuf, "yes") || !strcmp(lbuf, "YES") ||
- !strcmp(lbuf, "y") || !strcmp(lbuf, "Y")))
- return 1;
- else
- return 0;
-}
-
-static int
-decimal(char *str, int *num, int deflt)
-{
-int acc = 0, c;
-char *cp;
-
- while (1) {
- printf("Supply a decimal value for \"%s\" [%d] ", str, deflt);
- fflush(stdout);
- if (fgets(lbuf, LBUF, stdin) == NULL)
- exit(1);
- lbuf[strlen(lbuf)-1] = 0;
-
- if (!*lbuf)
- return 0;
-
- cp = lbuf;
- while ((c = *cp) && (c == ' ' || c == '\t')) cp++;
- if (!c)
- return 0;
- while ((c = *cp++)) {
- if (c <= '9' && c >= '0')
- acc = acc * 10 + c - '0';
- else
- break;
- }
- if (c == ' ' || c == '\t')
- while ((c = *cp) && (c == ' ' || c == '\t')) cp++;
- if (!c) {
- *num = acc;
- return 1;
- } else
- printf("%s is an invalid decimal number. Try again.\n",
- lbuf);
- }
-
-}
-
-#if 0
-static int
-hex(char *str, int *num, int deflt)
-{
-int acc = 0, c;
-char *cp;
-
- while (1) {
- printf("Supply a hex value for \"%s\" [%x] ", str, deflt);
- fgets(lbuf, LBUF, stdin);
- lbuf[strlen(lbuf)-1] = 0;
-
- if (!*lbuf)
- return 0;
-
- cp = lbuf;
- while ((c = *cp) && (c == ' ' || c == '\t')) cp++;
- if (!c)
- return 0;
- while ((c = *cp++)) {
- if (c <= '9' && c >= '0')
- acc = (acc << 4) + c - '0';
- else if (c <= 'f' && c >= 'a')
- acc = (acc << 4) + c - 'a' + 10;
- else if (c <= 'F' && c >= 'A')
- acc = (acc << 4) + c - 'A' + 10;
- else
- break;
- }
- if (c == ' ' || c == '\t')
- while ((c = *cp) && (c == ' ' || c == '\t')) cp++;
- if (!c) {
- *num = acc;
- return 1;
- } else
- printf("%s is an invalid hex number. Try again.\n",
- lbuf);
- }
-
-}
-
-static int
-string(char *str, char **ans)
-{
-int c;
-char *cp = lbuf;
-
- while (1) {
- printf("Supply a string value for \"%s\" [%s] ", str, *ans);
- fgets(lbuf, LBUF, stdin);
- lbuf[strlen(lbuf)-1] = 0;
-
- if (!*lbuf)
- return 0;
-
- while ((c = *cp) && (c == ' ' || c == '\t')) cp++;
- if (c == '"') {
- c = *++cp;
- *ans = cp;
- while ((c = *cp) && c != '"') cp++;
- } else {
- *ans = cp;
- while ((c = *cp) && c != ' ' && c != '\t') cp++;
- }
-
- if (c)
- *cp = 0;
- return 1;
- }
-}
-#endif
-
-static char *
-get_type(int type)
-{
- int numentries = (sizeof(part_types)/sizeof(struct part_type));
- int counter = 0;
- struct part_type *ptr = part_types;
-
-
- while(counter < numentries)
- {
- if(ptr->type == type)
- {
- return(ptr->name);
- }
- ptr++;
- counter++;
- }
- return("unknown");
-}
-
-
-static void
-parse_config_line(line, command)
- char *line;
- CMD *command;
-{
- char *cp, *end;
-
- cp = line;
- while (1) /* dirty trick used to insure one exit point for this
- function */
- {
- memset(command, 0, sizeof(*command));
-
- while (isspace(*cp)) ++cp;
- if (*cp == '\0' || *cp == '#')
- {
- break;
- }
- command->cmd = *cp++;
-
- /*
- * Parse args
- */
- while (1)
- {
- while (isspace(*cp)) ++cp;
- if (*cp == '#')
- {
- break; /* found comment */
- }
- if (isalpha(*cp))
- {
- command->args[command->n_args].argtype = *cp++;
- }
- if (!isdigit(*cp))
- {
- break; /* assume end of line */
- }
- end = NULL;
- command->args[command->n_args].arg_val = strtol(cp, &end, 0);
- if (cp == end)
- {
- break; /* couldn't parse number */
- }
- cp = end;
- command->n_args++;
- }
- break;
- }
-}
-
-
-static int
-process_geometry(command)
- CMD *command;
-{
- int status = 1, i;
-
- while (1)
- {
- geom_processed = 1;
- if (part_processed)
- {
- warnx(
- "ERROR line %d: the geometry specification line must occur before\n\
- all partition specifications",
- current_line_number);
- status = 0;
- break;
- }
- if (command->n_args != 3)
- {
- warnx("ERROR line %d: incorrect number of geometry args",
- current_line_number);
- status = 0;
- break;
- }
- dos_cyls = -1;
- dos_heads = -1;
- dos_sectors = -1;
- for (i = 0; i < 3; ++i)
- {
- switch (command->args[i].argtype)
- {
- case 'c':
- dos_cyls = command->args[i].arg_val;
- break;
- case 'h':
- dos_heads = command->args[i].arg_val;
- break;
- case 's':
- dos_sectors = command->args[i].arg_val;
- break;
- default:
- warnx(
- "ERROR line %d: unknown geometry arg type: '%c' (0x%02x)",
- current_line_number, command->args[i].argtype,
- command->args[i].argtype);
- status = 0;
- break;
- }
- }
- if (status == 0)
- {
- break;
- }
-
- dos_cylsecs = dos_heads * dos_sectors;
-
- /*
- * Do sanity checks on parameter values
- */
- if (dos_cyls < 0)
- {
- warnx("ERROR line %d: number of cylinders not specified",
- current_line_number);
- status = 0;
- }
- if (dos_cyls == 0 || dos_cyls > 1024)
- {
- warnx(
- "WARNING line %d: number of cylinders (%d) may be out-of-range\n\
- (must be within 1-1024 for normal BIOS operation, unless the entire disk\n\
- is dedicated to FreeBSD)",
- current_line_number, dos_cyls);
- }
-
- if (dos_heads < 0)
- {
- warnx("ERROR line %d: number of heads not specified",
- current_line_number);
- status = 0;
- }
- else if (dos_heads < 1 || dos_heads > 256)
- {
- warnx("ERROR line %d: number of heads must be within (1-256)",
- current_line_number);
- status = 0;
- }
-
- if (dos_sectors < 0)
- {
- warnx("ERROR line %d: number of sectors not specified",
- current_line_number);
- status = 0;
- }
- else if (dos_sectors < 1 || dos_sectors > 63)
- {
- warnx("ERROR line %d: number of sectors must be within (1-63)",
- current_line_number);
- status = 0;
- }
-
- break;
- }
- return (status);
-}
-
-
-static int
-process_partition(command)
- CMD *command;
-{
- int status = 0, partition;
- u_int32_t prev_head_boundary, prev_cyl_boundary;
- u_int32_t adj_size, max_end;
- struct dos_partition *partp;
-
- while (1)
- {
- part_processed = 1;
- if (command->n_args != 4)
- {
- warnx("ERROR line %d: incorrect number of partition args",
- current_line_number);
- break;
- }
- partition = command->args[0].arg_val;
- if (partition < 1 || partition > 4)
- {
- warnx("ERROR line %d: invalid partition number %d",
- current_line_number, partition);
- break;
- }
- partp = ((struct dos_partition *) &mboot.parts) + partition - 1;
- bzero((char *)partp, sizeof (struct dos_partition));
- partp->dp_typ = command->args[1].arg_val;
- partp->dp_start = command->args[2].arg_val;
- partp->dp_size = command->args[3].arg_val;
- max_end = partp->dp_start + partp->dp_size;
-
- if (partp->dp_typ == 0)
- {
- /*
- * Get out, the partition is marked as unused.
- */
- /*
- * Insure that it's unused.
- */
- bzero((char *)partp, sizeof (struct dos_partition));
- status = 1;
- break;
- }
-
- /*
- * Adjust start upwards, if necessary, to fall on an head boundary.
- */
- if (partp->dp_start % dos_sectors != 0)
- {
- prev_head_boundary = partp->dp_start / dos_sectors * dos_sectors;
- if (max_end < dos_sectors ||
- prev_head_boundary > max_end - dos_sectors)
- {
- /*
- * Can't go past end of partition
- */
- warnx(
- "ERROR line %d: unable to adjust start of partition %d to fall on\n\
- a head boundary",
- current_line_number, partition);
- break;
- }
- warnx(
- "WARNING: adjusting start offset of partition %d\n\
- from %u to %u, to fall on a head boundary",
- partition, (u_int)partp->dp_start,
- (u_int)(prev_head_boundary + dos_sectors));
- partp->dp_start = prev_head_boundary + dos_sectors;
- }
-
- /*
- * Adjust size downwards, if necessary, to fall on a cylinder
- * boundary.
- */
- prev_cyl_boundary =
- ((partp->dp_start + partp->dp_size) / dos_cylsecs) * dos_cylsecs;
- if (prev_cyl_boundary > partp->dp_start)
- adj_size = prev_cyl_boundary - partp->dp_start;
- else
- {
- warnx(
- "ERROR: could not adjust partition to start on a head boundary\n\
- and end on a cylinder boundary.");
- return (0);
- }
- if (adj_size != partp->dp_size)
- {
- warnx(
- "WARNING: adjusting size of partition %d from %u to %u\n\
- to end on a cylinder boundary",
- partition, (u_int)partp->dp_size, (u_int)adj_size);
- partp->dp_size = adj_size;
- }
- if (partp->dp_size == 0)
- {
- warnx("ERROR line %d: size of partition %d is zero",
- current_line_number, partition);
- break;
- }
-
- dos(partp);
- status = 1;
- break;
- }
- return (status);
-}
-
-
-static int
-process_active(command)
- CMD *command;
-{
- int status = 0, partition, i;
- struct dos_partition *partp;
-
- while (1)
- {
- active_processed = 1;
- if (command->n_args != 1)
- {
- warnx("ERROR line %d: incorrect number of active args",
- current_line_number);
- status = 0;
- break;
- }
- partition = command->args[0].arg_val;
- if (partition < 1 || partition > 4)
- {
- warnx("ERROR line %d: invalid partition number %d",
- current_line_number, partition);
- break;
- }
- /*
- * Reset active partition
- */
- partp = ((struct dos_partition *) &mboot.parts);
- for (i = 0; i < NDOSPART; i++)
- partp[i].dp_flag = 0;
- partp[partition-1].dp_flag = ACTIVE;
-
- status = 1;
- break;
- }
- return (status);
-}
-
-
-static int
-process_line(line)
- char *line;
-{
- CMD command;
- int status = 1;
-
- while (1)
- {
- parse_config_line(line, &command);
- switch (command.cmd)
- {
- case 0:
- /*
- * Comment or blank line
- */
- break;
- case 'g':
- /*
- * Set geometry
- */
- status = process_geometry(&command);
- break;
- case 'p':
- status = process_partition(&command);
- break;
- case 'a':
- status = process_active(&command);
- break;
- default:
- status = 0;
- break;
- }
- break;
- }
- return (status);
-}
-
-
-static int
-read_config(config_file)
- char *config_file;
-{
- FILE *fp = NULL;
- int status = 1;
- char buf[1010];
-
- while (1) /* dirty trick used to insure one exit point for this
- function */
- {
- if (strcmp(config_file, "-") != 0)
- {
- /*
- * We're not reading from stdin
- */
- if ((fp = fopen(config_file, "r")) == NULL)
- {
- status = 0;
- break;
- }
- }
- else
- {
- fp = stdin;
- }
- current_line_number = 0;
- while (!feof(fp))
- {
- if (fgets(buf, sizeof(buf), fp) == NULL)
- {
- break;
- }
- ++current_line_number;
- status = process_line(buf);
- if (status == 0)
- {
- break;
- }
- }
- break;
- }
- if (fp)
- {
- /*
- * It doesn't matter if we're reading from stdin, as we've reached EOF
- */
- fclose(fp);
- }
- return (status);
-}
-
-
-static void
-reset_boot(void)
-{
- int i;
- struct dos_partition *partp;
-
- init_boot();
- for (i = 0; i < 4; ++i)
- {
- partp = ((struct dos_partition *) &mboot.parts) + i;
- bzero((char *)partp, sizeof (struct dos_partition));
- }
-}
-
-static int
-sanitize_partition(partp)
- struct dos_partition *partp;
-{
- u_int32_t prev_head_boundary, prev_cyl_boundary;
- u_int32_t max_end, size, start;
-
- start = partp->dp_start;
- size = partp->dp_size;
- max_end = start + size;
- /* Only allow a zero size if the partition is being marked unused. */
- if (size == 0) {
- if (start == 0 && partp->dp_typ == 0)
- return (1);
- warnx("ERROR: size of partition is zero");
- return (0);
- }
- /* Return if no adjustment is necessary. */
- if (start % dos_sectors == 0 && (start + size) % dos_sectors == 0)
- return (1);
-
- if (start % dos_sectors != 0)
- warnx("WARNING: partition does not start on a head boundary");
- if ((start +size) % dos_sectors != 0)
- warnx("WARNING: partition does not end on a cylinder boundary");
- warnx("WARNING: this may confuse the BIOS or some operating systems");
- if (!ok("Correct this automatically?"))
- return (1);
-
- /*
- * Adjust start upwards, if necessary, to fall on an head boundary.
- */
- if (start % dos_sectors != 0) {
- prev_head_boundary = start / dos_sectors * dos_sectors;
- if (max_end < dos_sectors ||
- prev_head_boundary >= max_end - dos_sectors) {
- /*
- * Can't go past end of partition
- */
- warnx(
- "ERROR: unable to adjust start of partition to fall on a head boundary");
- return (0);
- }
- start = prev_head_boundary + dos_sectors;
- }
-
- /*
- * Adjust size downwards, if necessary, to fall on a cylinder
- * boundary.
- */
- prev_cyl_boundary = ((start + size) / dos_cylsecs) * dos_cylsecs;
- if (prev_cyl_boundary > start)
- size = prev_cyl_boundary - start;
- else {
- warnx("ERROR: could not adjust partition to start on a head boundary\n\
- and end on a cylinder boundary.");
- return (0);
- }
-
- /* Finally, commit any changes to partp and return. */
- if (start != partp->dp_start) {
- warnx("WARNING: adjusting start offset of partition to %u",
- (u_int)start);
- partp->dp_start = start;
- }
- if (size != partp->dp_size) {
- warnx("WARNING: adjusting size of partition to %u", (u_int)size);
- partp->dp_size = size;
- }
-
- return (1);
-}
-
-/*
- * Try figuring out the root device's canonical disk name.
- * The following choices are considered:
- * /dev/ad0s1a => /dev/ad0
- * /dev/da0a => /dev/da0
- * /dev/vinum/root => /dev/vinum/root
- */
-static char *
-get_rootdisk(void)
-{
- struct statfs rootfs;
- regex_t re;
-#define NMATCHES 2
- regmatch_t rm[NMATCHES];
- char *s;
- int rv;
-
- if (statfs("/", &rootfs) == -1)
- err(1, "statfs(\"/\")");
-
- if ((rv = regcomp(&re, "^(/dev/.*)(\\d+(s\\d+)?[a-h])?$",
- REG_EXTENDED)) != 0)
- errx(1, "regcomp() failed (%d)", rv);
- if ((rv = regexec(&re, rootfs.f_mntfromname, NMATCHES, rm, 0)) != 0)
- errx(1,
-"mounted root fs resource doesn't match expectations (regexec returned %d)",
- rv);
- if ((s = malloc(rm[1].rm_eo - rm[1].rm_so + 1)) == NULL)
- errx(1, "out of memory");
- memcpy(s, rootfs.f_mntfromname + rm[1].rm_so,
- rm[1].rm_eo - rm[1].rm_so);
- s[rm[1].rm_eo - rm[1].rm_so] = 0;
-
- return s;
-}
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