684 lines
19 KiB
C
684 lines
19 KiB
C
/*
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* fdisksunlabel.c
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*
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* I think this is mostly, or entirely, due to
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* Jakub Jelinek (jj@sunsite.mff.cuni.cz), July 1996
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*
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* Merged with fdisk for other architectures, aeb, June 1998.
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*
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* Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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* Internationalization
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*/
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#include <stdio.h> /* stderr */
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#include <stdlib.h> /* qsort */
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#include <string.h> /* strstr */
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#include <unistd.h> /* write */
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#include <sys/ioctl.h> /* ioctl */
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#include <sys/stat.h> /* stat */
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#include <sys/sysmacros.h> /* major */
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#include "nls.h"
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#include "blkdev.h"
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#include <endian.h>
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#ifdef HAVE_SCSI_SCSI_H
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#define u_char unsigned char
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#include <scsi/scsi.h> /* SCSI_IOCTL_GET_IDLUN */
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#undef u_char
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#endif
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#ifdef HAVE_LINUX_MAJOR_H
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#include <linux/major.h> /* FLOPPY_MAJOR */
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#endif
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#include "common.h"
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#include "fdisk.h"
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#include "fdisksunlabel.h"
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static int other_endian = 0;
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static int scsi_disk = 0;
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static int floppy = 0;
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struct systypes sun_sys_types[] = {
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{SUN_TAG_UNASSIGNED, N_("Unassigned")},
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{SUN_TAG_BOOT, N_("Boot")},
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{SUN_TAG_ROOT, N_("SunOS root")},
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{SUN_TAG_SWAP, N_("SunOS swap")},
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{SUN_TAG_USR, N_("SunOS usr")},
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{SUN_TAG_BACKUP, N_("Whole disk")},
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{SUN_TAG_STAND, N_("SunOS stand")},
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{SUN_TAG_VAR, N_("SunOS var")},
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{SUN_TAG_HOME, N_("SunOS home")},
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{SUN_TAG_ALTSCTR, N_("SunOS alt sectors")},
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{SUN_TAG_CACHE, N_("SunOS cachefs")},
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{SUN_TAG_RESERVED, N_("SunOS reserved")},
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{SUN_TAG_LINUX_SWAP, N_("Linux swap")},
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{SUN_TAG_LINUX_NATIVE, N_("Linux native")},
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{SUN_TAG_LINUX_LVM, N_("Linux LVM")},
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{SUN_TAG_LINUX_RAID, N_("Linux raid autodetect")},
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{ 0, NULL }
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};
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static inline unsigned short __swap16(unsigned short x) {
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return (((uint16_t)(x) & 0xFF) << 8) | (((uint16_t)(x) & 0xFF00) >> 8);
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}
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static inline uint32_t __swap32(uint32_t x) {
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return (((uint32_t)(x) & 0xFF) << 24) | (((uint32_t)(x) & 0xFF00) << 8) | (((uint32_t)(x) & 0xFF0000) >> 8) | (((uint32_t)(x) & 0xFF000000) >> 24);
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}
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#define SSWAP16(x) (other_endian ? __swap16(x) \
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: (uint16_t)(x))
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#define SSWAP32(x) (other_endian ? __swap32(x) \
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: (uint32_t)(x))
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#ifndef FLOPPY_MAJOR
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#define FLOPPY_MAJOR 2
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#endif
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#ifndef IDE0_MAJOR
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#define IDE0_MAJOR 3
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#endif
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#ifndef IDE1_MAJOR
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#define IDE1_MAJOR 22
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#endif
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void guess_device_type(int fd)
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{
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struct stat bootstat;
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if (fstat (fd, &bootstat) < 0) {
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scsi_disk = 0;
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floppy = 0;
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} else if (S_ISBLK(bootstat.st_mode)
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&& (major(bootstat.st_rdev) == IDE0_MAJOR ||
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major(bootstat.st_rdev) == IDE1_MAJOR)) {
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scsi_disk = 0;
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floppy = 0;
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} else if (S_ISBLK(bootstat.st_mode)
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&& major(bootstat.st_rdev) == FLOPPY_MAJOR) {
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scsi_disk = 0;
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floppy = 1;
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} else {
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scsi_disk = 1;
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floppy = 0;
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}
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}
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static void set_sun_partition(int i, uint32_t start, uint32_t stop, uint16_t sysid)
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{
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sunlabel->part_tags[i].tag = SSWAP16(sysid);
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sunlabel->part_tags[i].flag = SSWAP16(0);
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sunlabel->partitions[i].start_cylinder =
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SSWAP32(start / (heads * sectors));
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sunlabel->partitions[i].num_sectors =
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SSWAP32(stop - start);
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set_changed(i);
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}
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void sun_nolabel(void)
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{
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sun_label = 0;
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sunlabel->magic = 0;
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partitions = 4;
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}
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int check_sun_label(void)
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{
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unsigned short *ush;
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int csum;
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if (sunlabel->magic != SUN_LABEL_MAGIC &&
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sunlabel->magic != SUN_LABEL_MAGIC_SWAPPED) {
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sun_label = 0;
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other_endian = 0;
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return 0;
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}
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other_endian = (sunlabel->magic == SUN_LABEL_MAGIC_SWAPPED);
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ush = ((unsigned short *) (sunlabel + 1)) - 1;
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for (csum = 0; ush >= (unsigned short *)sunlabel;)
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csum ^= *ush--;
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if (csum) {
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fprintf(stderr,_("Detected sun disklabel with wrong checksum.\n"
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"Probably you'll have to set all the values,\n"
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"e.g. heads, sectors, cylinders and partitions\n"
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"or force a fresh label (s command in main menu)\n"));
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} else {
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int need_fixing = 0;
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heads = SSWAP16(sunlabel->nhead);
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cylinders = SSWAP16(sunlabel->ncyl);
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sectors = SSWAP16(sunlabel->nsect);
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if (sunlabel->version != SSWAP32(SUN_LABEL_VERSION)) {
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fprintf(stderr,_("Detected sun disklabel with wrong version [0x%08x].\n"),
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sunlabel->version);
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need_fixing = 1;
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}
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if (sunlabel->sanity != SSWAP32(SUN_LABEL_SANE)) {
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fprintf(stderr,_("Detected sun disklabel with wrong sanity [0x%08x].\n"),
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sunlabel->sanity);
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need_fixing = 1;
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}
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if (sunlabel->num_partitions != SSWAP16(SUN_NUM_PARTITIONS)) {
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fprintf(stderr,_("Detected sun disklabel with wrong num_partitions [%u].\n"),
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sunlabel->num_partitions);
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need_fixing = 1;
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}
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if (need_fixing) {
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fprintf(stderr, _("Warning: Wrong values need to be "
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"fixed up and will be corrected "
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"by w(rite)\n"));
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sunlabel->version = SSWAP32(SUN_LABEL_VERSION);
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sunlabel->sanity = SSWAP32(SUN_LABEL_SANE);
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sunlabel->num_partitions = SSWAP16(SUN_NUM_PARTITIONS);
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ush = (unsigned short *)sunlabel;
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csum = 0;
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while(ush < (unsigned short *)(&sunlabel->cksum))
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csum ^= *ush++;
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sunlabel->cksum = csum;
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set_changed(0);
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}
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}
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update_units();
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sun_label = 1;
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partitions = SUN_NUM_PARTITIONS;
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return 1;
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}
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void create_sunlabel(void)
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{
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struct hd_geometry geometry;
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unsigned long long llsectors, llcyls;
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unsigned int ndiv;
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int res, sec_fac;
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fprintf(stderr,
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_("Building a new sun disklabel. Changes will remain in memory only,\n"
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"until you decide to write them. After that, of course, the previous\n"
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"content won't be recoverable.\n\n"));
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#if BYTE_ORDER == LITTLE_ENDIAN
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other_endian = 1;
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#else
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other_endian = 0;
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#endif
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zeroize_mbr_buffer();
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sunlabel->magic = SSWAP16(SUN_LABEL_MAGIC);
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sunlabel->sanity = SSWAP32(SUN_LABEL_SANE);
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sunlabel->version = SSWAP32(SUN_LABEL_VERSION);
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sunlabel->num_partitions = SSWAP16(SUN_NUM_PARTITIONS);
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res = blkdev_get_sectors(fd, &llsectors);
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sec_fac = sector_size / 512;
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#ifdef HDIO_GETGEO
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if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
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heads = geometry.heads;
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sectors = geometry.sectors;
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if (res == 0) {
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llcyls = llsectors / (heads * sectors * sec_fac);
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cylinders = llcyls;
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if (cylinders != llcyls)
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cylinders = ~0;
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} else {
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cylinders = geometry.cylinders;
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fprintf(stderr,
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_("Warning: BLKGETSIZE ioctl failed on %s. "
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"Using geometry cylinder value of %d.\n"
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"This value may be truncated for devices"
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" > 33.8 GB.\n"), disk_device, cylinders);
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}
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} else
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#endif
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{
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heads = read_int(1,1,1024,0,_("Heads"));
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sectors = read_int(1,1,1024,0,_("Sectors/track"));
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cylinders = read_int(1,1,65535,0,_("Cylinders"));
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}
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sunlabel->acyl = SSWAP16(2);
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sunlabel->pcyl = SSWAP16(cylinders);
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sunlabel->ncyl = SSWAP16(cylinders - 2);
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sunlabel->rpm = SSWAP16(5400);
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sunlabel->intrlv = SSWAP16(1);
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sunlabel->apc = SSWAP16(0);
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sunlabel->nhead = SSWAP16(heads);
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sunlabel->nsect = SSWAP16(sectors);
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sunlabel->ncyl = SSWAP16(cylinders);
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snprintf(sunlabel->label_id, sizeof(sunlabel->label_id),
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"Linux cyl %d alt %d hd %d sec %llu",
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cylinders, SSWAP16(sunlabel->acyl), heads, sectors);
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if (cylinders * heads * sectors >= 150 * 2048) {
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ndiv = cylinders - (50 * 2048 / (heads * sectors)); /* 50M swap */
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} else
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ndiv = cylinders * 2 / 3;
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set_sun_partition(0, 0, ndiv * heads * sectors,
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SUN_TAG_LINUX_NATIVE);
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set_sun_partition(1, ndiv * heads * sectors,
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cylinders * heads * sectors,
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SUN_TAG_LINUX_SWAP);
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sunlabel->part_tags[1].flag |= SSWAP16(SUN_FLAG_UNMNT);
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set_sun_partition(2, 0, cylinders * heads * sectors, SUN_TAG_BACKUP);
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{
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unsigned short *ush = (unsigned short *)sunlabel;
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unsigned short csum = 0;
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while(ush < (unsigned short *)(&sunlabel->cksum))
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csum ^= *ush++;
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sunlabel->cksum = csum;
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}
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set_all_unchanged();
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get_boot(create_empty_sun);
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set_changed(0);
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}
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void toggle_sunflags(int i, uint16_t mask)
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{
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struct sun_tag_flag *p = &sunlabel->part_tags[i];
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p->flag ^= SSWAP16(mask);
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set_changed(i);
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}
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static void fetch_sun(uint32_t *starts, uint32_t *lens, uint32_t *start, uint32_t *stop)
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{
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int i, continuous = 1;
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*start = 0;
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*stop = cylinders * heads * sectors;
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for (i = 0; i < partitions; i++) {
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struct sun_partition *part = &sunlabel->partitions[i];
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struct sun_tag_flag *tag = &sunlabel->part_tags[i];
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if (part->num_sectors &&
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tag->tag != SSWAP16(SUN_TAG_UNASSIGNED) &&
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tag->tag != SSWAP16(SUN_TAG_BACKUP)) {
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starts[i] = (SSWAP32(part->start_cylinder) *
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heads * sectors);
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lens[i] = SSWAP32(part->num_sectors);
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if (continuous) {
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if (starts[i] == *start)
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*start += lens[i];
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else if (starts[i] + lens[i] >= *stop)
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*stop = starts[i];
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else
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continuous = 0;
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/* There will be probably more gaps
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than one, so lets check afterwards */
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}
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} else {
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starts[i] = 0;
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lens[i] = 0;
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}
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}
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}
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static unsigned int *verify_sun_starts;
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static int verify_sun_cmp(int *a, int *b)
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{
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if (*a == -1)
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return 1;
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if (*b == -1)
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return -1;
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if (verify_sun_starts[*a] > verify_sun_starts[*b])
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return 1;
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return -1;
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}
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void verify_sun(void)
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{
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uint32_t starts[SUN_NUM_PARTITIONS], lens[SUN_NUM_PARTITIONS], start, stop;
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int i,j,k,starto,endo;
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int array[SUN_NUM_PARTITIONS];
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verify_sun_starts = starts;
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fetch_sun(starts, lens, &start, &stop);
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for (k = 0; k < 7; k++) {
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for (i = 0; i < SUN_NUM_PARTITIONS; i++) {
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if (k && (lens[i] % (heads * sectors))) {
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printf(_("Partition %d doesn't end on cylinder boundary\n"), i+1);
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}
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if (lens[i]) {
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for (j = 0; j < i; j++)
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if (lens[j]) {
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if (starts[j] == starts[i]+lens[i]) {
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starts[j] = starts[i]; lens[j] += lens[i];
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lens[i] = 0;
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} else if (starts[i] == starts[j]+lens[j]){
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lens[j] += lens[i];
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lens[i] = 0;
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} else if (!k) {
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if (starts[i] < starts[j]+lens[j] &&
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starts[j] < starts[i]+lens[i]) {
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starto = starts[i];
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if (starts[j] > starto)
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starto = starts[j];
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endo = starts[i]+lens[i];
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if (starts[j]+lens[j] < endo)
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endo = starts[j]+lens[j];
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printf(_("Partition %d overlaps with others in "
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"sectors %d-%d\n"), i+1, starto, endo);
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}
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}
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}
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}
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}
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}
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for (i = 0; i < SUN_NUM_PARTITIONS; i++) {
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if (lens[i])
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array[i] = i;
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else
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array[i] = -1;
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}
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qsort(array,ARRAY_SIZE(array),sizeof(array[0]),
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(int (*)(const void *,const void *)) verify_sun_cmp);
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if (array[0] == -1) {
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printf(_("No partitions defined\n"));
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return;
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}
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stop = cylinders * heads * sectors;
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if (starts[array[0]])
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printf(_("Unused gap - sectors 0-%d\n"), starts[array[0]]);
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for (i = 0; i < 7 && array[i+1] != -1; i++) {
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printf(_("Unused gap - sectors %d-%d\n"),
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(starts[array[i]] + lens[array[i]]),
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starts[array[i+1]]);
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}
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start = (starts[array[i]] + lens[array[i]]);
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if (start < stop)
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printf(_("Unused gap - sectors %d-%d\n"), start, stop);
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}
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void add_sun_partition(int n, int sys)
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{
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uint32_t starts[SUN_NUM_PARTITIONS], lens[SUN_NUM_PARTITIONS];
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struct sun_partition *part = &sunlabel->partitions[n];
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struct sun_tag_flag *tag = &sunlabel->part_tags[n];
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uint32_t start, stop, stop2;
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int whole_disk = 0;
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char mesg[256];
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int i, first, last;
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if (part->num_sectors && tag->tag != SSWAP16(SUN_TAG_UNASSIGNED)) {
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printf(_("Partition %d is already defined. Delete "
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"it before re-adding it.\n"), n + 1);
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return;
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}
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fetch_sun(starts, lens, &start, &stop);
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if (stop <= start) {
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if (n == 2)
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whole_disk = 1;
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else {
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printf(_("Other partitions already cover the whole disk.\nDelete "
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"some/shrink them before retry.\n"));
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return;
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}
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}
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snprintf(mesg, sizeof(mesg), _("First %s"), str_units(SINGULAR));
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for (;;) {
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if (whole_disk)
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first = read_int(0, 0, 0, 0, mesg);
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else
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first = read_int(scround(start), scround(stop)+1,
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scround(stop), 0, mesg);
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if (display_in_cyl_units)
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first *= units_per_sector;
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else {
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/* Starting sector has to be properly aligned */
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int cs = heads * sectors;
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int x = first % cs;
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if (x)
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first += cs - x;
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}
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if (n == 2 && first != 0)
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printf (_("\
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It is highly recommended that the third partition covers the whole disk\n\
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and is of type `Whole disk'\n"));
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/* ewt asks to add: "don't start a partition at cyl 0"
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However, edmundo@rano.demon.co.uk writes:
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"In addition to having a Sun partition table, to be able to
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boot from the disc, the first partition, /dev/sdX1, must
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start at cylinder 0. This means that /dev/sdX1 contains
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the partition table and the boot block, as these are the
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first two sectors of the disc. Therefore you must be
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careful what you use /dev/sdX1 for. In particular, you must
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not use a partition starting at cylinder 0 for Linux swap,
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as that would overwrite the partition table and the boot
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block. You may, however, use such a partition for a UFS
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or EXT2 file system, as these file systems leave the first
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1024 bytes undisturbed. */
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/* On the other hand, one should not use partitions
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starting at block 0 in an md, or the label will
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be trashed. */
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for (i = 0; i < partitions; i++)
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if (lens[i] && starts[i] <= first
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&& starts[i] + lens[i] > first)
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break;
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if (i < partitions && !whole_disk) {
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if (n == 2 && !first) {
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whole_disk = 1;
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break;
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}
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printf(_("Sector %d is already allocated\n"), first);
|
|
} else
|
|
break;
|
|
}
|
|
stop = cylinders * heads * sectors; /* ancient */
|
|
stop2 = stop;
|
|
for (i = 0; i < partitions; i++) {
|
|
if (starts[i] > first && starts[i] < stop)
|
|
stop = starts[i];
|
|
}
|
|
snprintf(mesg, sizeof(mesg),
|
|
_("Last %s or +size or +sizeM or +sizeK"),
|
|
str_units(SINGULAR));
|
|
if (whole_disk)
|
|
last = read_int(scround(stop2), scround(stop2), scround(stop2),
|
|
0, mesg);
|
|
else if (n == 2 && !first)
|
|
last = read_int(scround(first), scround(stop2), scround(stop2),
|
|
scround(first), mesg);
|
|
else
|
|
last = read_int(scround(first), scround(stop), scround(stop),
|
|
scround(first), mesg);
|
|
if (display_in_cyl_units)
|
|
last *= units_per_sector;
|
|
if (n == 2 && !first) {
|
|
if (last >= stop2) {
|
|
whole_disk = 1;
|
|
last = stop2;
|
|
} else if (last > stop) {
|
|
printf (
|
|
_("You haven't covered the whole disk with the 3rd partition, but your value\n"
|
|
"%d %s covers some other partition. Your entry has been changed\n"
|
|
"to %d %s\n"),
|
|
scround(last), str_units(SINGULAR),
|
|
scround(stop), str_units(SINGULAR));
|
|
last = stop;
|
|
}
|
|
} else if (!whole_disk && last > stop)
|
|
last = stop;
|
|
|
|
if (whole_disk)
|
|
sys = SUN_TAG_BACKUP;
|
|
|
|
set_sun_partition(n, first, last, sys);
|
|
}
|
|
|
|
void sun_delete_partition(int i)
|
|
{
|
|
struct sun_partition *part = &sunlabel->partitions[i];
|
|
struct sun_tag_flag *tag = &sunlabel->part_tags[i];
|
|
unsigned int nsec;
|
|
|
|
if (i == 2 &&
|
|
tag->tag == SSWAP16(SUN_TAG_BACKUP) &&
|
|
!part->start_cylinder &&
|
|
(nsec = SSWAP32(part->num_sectors))
|
|
== heads * sectors * cylinders)
|
|
printf(_("If you want to maintain SunOS/Solaris compatibility, "
|
|
"consider leaving this\n"
|
|
"partition as Whole disk (5), starting at 0, with %u "
|
|
"sectors\n"), nsec);
|
|
tag->tag = SSWAP16(SUN_TAG_UNASSIGNED);
|
|
part->num_sectors = 0;
|
|
}
|
|
|
|
int sun_change_sysid(int i, uint16_t sys)
|
|
{
|
|
struct sun_partition *part = &sunlabel->partitions[i];
|
|
struct sun_tag_flag *tag = &sunlabel->part_tags[i];
|
|
|
|
if (sys == SUN_TAG_LINUX_SWAP && !part->start_cylinder) {
|
|
read_chars(
|
|
_("It is highly recommended that the partition at offset 0\n"
|
|
"is UFS, EXT2FS filesystem or SunOS swap. Putting Linux swap\n"
|
|
"there may destroy your partition table and bootblock.\n"
|
|
"Type YES if you're very sure you would like that partition\n"
|
|
"tagged with 82 (Linux swap): "));
|
|
if (strcmp (line_ptr, _("YES\n")))
|
|
return 0;
|
|
}
|
|
switch (sys) {
|
|
case SUN_TAG_SWAP:
|
|
case SUN_TAG_LINUX_SWAP:
|
|
/* swaps are not mountable by default */
|
|
tag->flag |= SSWAP16(SUN_FLAG_UNMNT);
|
|
break;
|
|
default:
|
|
/* assume other types are mountable;
|
|
user can change it anyway */
|
|
tag->flag &= ~SSWAP16(SUN_FLAG_UNMNT);
|
|
break;
|
|
}
|
|
tag->tag = SSWAP16(sys);
|
|
return 1;
|
|
}
|
|
|
|
void sun_list_table(int xtra)
|
|
{
|
|
int i, w;
|
|
char *type;
|
|
|
|
w = strlen(disk_device);
|
|
if (xtra)
|
|
printf(
|
|
_("\nDisk %s (Sun disk label): %d heads, %llu sectors, %d rpm\n"
|
|
"%d cylinders, %d alternate cylinders, %d physical cylinders\n"
|
|
"%d extra sects/cyl, interleave %d:1\n"
|
|
"Label ID: %s\n"
|
|
"Volume ID: %s\n"
|
|
"Units = %s of %d * 512 bytes\n\n"),
|
|
disk_device, heads, sectors, SSWAP16(sunlabel->rpm),
|
|
cylinders, SSWAP16(sunlabel->acyl),
|
|
SSWAP16(sunlabel->pcyl),
|
|
SSWAP16(sunlabel->apc),
|
|
SSWAP16(sunlabel->intrlv),
|
|
sunlabel->label_id,
|
|
sunlabel->volume_id,
|
|
str_units(PLURAL), units_per_sector);
|
|
else
|
|
printf(
|
|
_("\nDisk %s (Sun disk label): %d heads, %llu sectors, %d cylinders\n"
|
|
"Units = %s of %d * 512 bytes\n\n"),
|
|
disk_device, heads, sectors, cylinders,
|
|
str_units(PLURAL), units_per_sector);
|
|
|
|
printf(_("%*s Flag Start End Blocks Id System\n"),
|
|
w + 1, _("Device"));
|
|
for (i = 0 ; i < partitions; i++) {
|
|
struct sun_partition *part = &sunlabel->partitions[i];
|
|
struct sun_tag_flag *tag = &sunlabel->part_tags[i];
|
|
|
|
if (part->num_sectors) {
|
|
uint32_t start = SSWAP32(part->start_cylinder) * heads * sectors;
|
|
uint32_t len = SSWAP32(part->num_sectors);
|
|
printf(
|
|
"%s %c%c %9ld %9ld %9ld%c %2x %s\n",
|
|
/* device */ partname(disk_device, i+1, w),
|
|
/* flags */ (tag->flag & SSWAP16(SUN_FLAG_UNMNT)) ? 'u' : ' ',
|
|
(tag->flag & SSWAP16(SUN_FLAG_RONLY)) ? 'r' : ' ',
|
|
/* start */ (long) scround(start),
|
|
/* end */ (long) scround(start+len),
|
|
/* odd flag on end */ (long) len / 2, len & 1 ? '+' : ' ',
|
|
/* type id */ SSWAP16(tag->tag),
|
|
/* type name */ (type = partition_type(SSWAP16(tag->tag)))
|
|
? type : _("Unknown"));
|
|
}
|
|
}
|
|
}
|
|
|
|
void sun_set_alt_cyl(void)
|
|
{
|
|
sunlabel->acyl =
|
|
SSWAP16(read_int(0,SSWAP16(sunlabel->acyl), 65535, 0,
|
|
_("Number of alternate cylinders")));
|
|
}
|
|
|
|
void sun_set_ncyl(int cyl)
|
|
{
|
|
sunlabel->ncyl = SSWAP16(cyl);
|
|
}
|
|
|
|
void sun_set_xcyl(void)
|
|
{
|
|
sunlabel->apc =
|
|
SSWAP16(read_int(0, SSWAP16(sunlabel->apc), sectors, 0,
|
|
_("Extra sectors per cylinder")));
|
|
}
|
|
|
|
void sun_set_ilfact(void)
|
|
{
|
|
sunlabel->intrlv =
|
|
SSWAP16(read_int(1, SSWAP16(sunlabel->intrlv), 32, 0,
|
|
_("Interleave factor")));
|
|
}
|
|
|
|
void sun_set_rspeed(void)
|
|
{
|
|
sunlabel->rpm =
|
|
SSWAP16(read_int(1, SSWAP16(sunlabel->rpm), 100000, 0,
|
|
_("Rotation speed (rpm)")));
|
|
}
|
|
|
|
void sun_set_pcylcount(void)
|
|
{
|
|
sunlabel->pcyl =
|
|
SSWAP16(read_int(0, SSWAP16(sunlabel->pcyl), 65535, 0,
|
|
_("Number of physical cylinders")));
|
|
}
|
|
|
|
void sun_write_table(void)
|
|
{
|
|
unsigned short *ush = (unsigned short *)sunlabel;
|
|
unsigned short csum = 0;
|
|
|
|
while(ush < (unsigned short *)(&sunlabel->cksum))
|
|
csum ^= *ush++;
|
|
sunlabel->cksum = csum;
|
|
if (lseek(fd, 0, SEEK_SET) < 0)
|
|
fatal(unable_to_seek);
|
|
if (write(fd, sunlabel, SECTOR_SIZE) != SECTOR_SIZE)
|
|
fatal(unable_to_write);
|
|
}
|
|
|
|
int sun_get_sysid(int i)
|
|
{
|
|
return SSWAP16(sunlabel->part_tags[i].tag);
|
|
}
|