diff options
Diffstat (limited to 'util-linux/fdisk_sgi.c')
| -rw-r--r-- | util-linux/fdisk_sgi.c | 887 |
1 files changed, 887 insertions, 0 deletions
diff --git a/util-linux/fdisk_sgi.c b/util-linux/fdisk_sgi.c new file mode 100644 index 000000000..98abcc086 --- /dev/null +++ b/util-linux/fdisk_sgi.c @@ -0,0 +1,887 @@ +#ifdef CONFIG_FEATURE_SGI_LABEL + +/* + * Copyright (C) Andreas Neuper, Sep 1998. + * This file may be modified and redistributed under + * the terms of the GNU Public License. + */ + +struct device_parameter { /* 48 bytes */ + unsigned char skew; + unsigned char gap1; + unsigned char gap2; + unsigned char sparecyl; + unsigned short pcylcount; + unsigned short head_vol0; + unsigned short ntrks; /* tracks in cyl 0 or vol 0 */ + unsigned char cmd_tag_queue_depth; + unsigned char unused0; + unsigned short unused1; + unsigned short nsect; /* sectors/tracks in cyl 0 or vol 0 */ + unsigned short bytes; + unsigned short ilfact; + unsigned int flags; /* controller flags */ + unsigned int datarate; + unsigned int retries_on_error; + unsigned int ms_per_word; + unsigned short xylogics_gap1; + unsigned short xylogics_syncdelay; + unsigned short xylogics_readdelay; + unsigned short xylogics_gap2; + unsigned short xylogics_readgate; + unsigned short xylogics_writecont; +}; + +/* + * controller flags + */ +#define SECTOR_SLIP 0x01 +#define SECTOR_FWD 0x02 +#define TRACK_FWD 0x04 +#define TRACK_MULTIVOL 0x08 +#define IGNORE_ERRORS 0x10 +#define RESEEK 0x20 +#define ENABLE_CMDTAGQ 0x40 + +typedef struct { + unsigned int magic; /* expect SGI_LABEL_MAGIC */ + unsigned short boot_part; /* active boot partition */ + unsigned short swap_part; /* active swap partition */ + unsigned char boot_file[16]; /* name of the bootfile */ + struct device_parameter devparam; /* 1 * 48 bytes */ + struct volume_directory { /* 15 * 16 bytes */ + unsigned char vol_file_name[8]; /* a character array */ + unsigned int vol_file_start; /* number of logical block */ + unsigned int vol_file_size; /* number of bytes */ + } directory[15]; + struct sgi_partinfo { /* 16 * 12 bytes */ + unsigned int num_sectors; /* number of blocks */ + unsigned int start_sector; /* must be cylinder aligned */ + unsigned int id; + } partitions[16]; + unsigned int csum; + unsigned int fillbytes; +} sgi_partition; + +typedef struct { + unsigned int magic; /* looks like a magic number */ + unsigned int a2; + unsigned int a3; + unsigned int a4; + unsigned int b1; + unsigned short b2; + unsigned short b3; + unsigned int c[16]; + unsigned short d[3]; + unsigned char scsi_string[50]; + unsigned char serial[137]; + unsigned short check1816; + unsigned char installer[225]; +} sgiinfo; + +#define SGI_LABEL_MAGIC 0x0be5a941 +#define SGI_LABEL_MAGIC_SWAPPED 0x41a9e50b +#define SGI_INFO_MAGIC 0x00072959 +#define SGI_INFO_MAGIC_SWAPPED 0x59290700 + +#define SGI_SSWAP16(x) (sgi_other_endian ? __swap16(x) \ + : (uint16_t)(x)) +#define SGI_SSWAP32(x) (sgi_other_endian ? __swap32(x) \ + : (uint32_t)(x)) + +#define sgilabel ((sgi_partition *)MBRbuffer) +#define sgiparam (sgilabel->devparam) + +/* + * + * fdisksgilabel.c + * + * Copyright (C) Andreas Neuper, Sep 1998. + * This file may be modified and redistributed under + * the terms of the GNU Public License. + * + * Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * Internationalization + */ + + +static int sgi_other_endian; +static int debug; +static short sgi_volumes = 1; + +/* + * only dealing with free blocks here + */ + +typedef struct { + unsigned int first; + unsigned int last; +} freeblocks; +static freeblocks freelist[17]; /* 16 partitions can produce 17 vacant slots */ + +static void +setfreelist(int i, unsigned int f, unsigned int l) +{ + freelist[i].first = f; + freelist[i].last = l; +} + +static void +add2freelist(unsigned int f, unsigned int l) +{ + int i; + for (i = 0; i < 17 ; i++) + if (freelist[i].last == 0) + break; + setfreelist(i, f, l); +} + +static void +clearfreelist(void) +{ + int i; + + for (i = 0; i < 17 ; i++) + setfreelist(i, 0, 0); +} + +static unsigned int +isinfreelist(unsigned int b) +{ + int i; + + for (i = 0; i < 17 ; i++) + if (freelist[i].first <= b && freelist[i].last >= b) + return freelist[i].last; + return 0; +} + /* return last vacant block of this stride (never 0). */ + /* the '>=' is not quite correct, but simplifies the code */ +/* + * end of free blocks section + */ + +static const struct systypes sgi_sys_types[] = { +/* SGI_VOLHDR */ { "\x00" "SGI volhdr" }, +/* 0x01 */ { "\x01" "SGI trkrepl" }, +/* 0x02 */ { "\x02" "SGI secrepl" }, +/* SGI_SWAP */ { "\x03" "SGI raw" }, +/* 0x04 */ { "\x04" "SGI bsd" }, +/* 0x05 */ { "\x05" "SGI sysv" }, +/* SGI_ENTIRE_DISK */ { "\x06" "SGI volume" }, +/* SGI_EFS */ { "\x07" "SGI efs" }, +/* 0x08 */ { "\x08" "SGI lvol" }, +/* 0x09 */ { "\x09" "SGI rlvol" }, +/* SGI_XFS */ { "\x0a" "SGI xfs" }, +/* SGI_XFSLOG */ { "\x0b" "SGI xfslog" }, +/* SGI_XLV */ { "\x0c" "SGI xlv" }, +/* SGI_XVM */ { "\x0d" "SGI xvm" }, +/* LINUX_SWAP */ { "\x82" "Linux swap" }, +/* LINUX_NATIVE */ { "\x83" "Linux native" }, +/* LINUX_LVM */ { "\x8d" "Linux LVM" }, +/* LINUX_RAID */ { "\xfd" "Linux RAID" }, + { NULL } +}; + + +static int +sgi_get_nsect(void) +{ + return SGI_SSWAP16(sgilabel->devparam.nsect); +} + +static int +sgi_get_ntrks(void) +{ + return SGI_SSWAP16(sgilabel->devparam.ntrks); +} + +static unsigned int +two_s_complement_32bit_sum(unsigned int* base, int size /* in bytes */) +{ + int i = 0; + unsigned int sum = 0; + + size /= sizeof(unsigned int); + for (i = 0; i < size; i++) + sum -= SGI_SSWAP32(base[i]); + return sum; +} + +static int +check_sgi_label(void) +{ + if (sizeof(sgilabel) > 512) { + fprintf(stderr, + _("According to MIPS Computer Systems, Inc the " + "Label must not contain more than 512 bytes\n")); + exit(1); + } + + if (sgilabel->magic != SGI_LABEL_MAGIC + && sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED) { + current_label_type = label_dos; + return 0; + } + + sgi_other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED); + /* + * test for correct checksum + */ + if (two_s_complement_32bit_sum((unsigned int*)sgilabel, + sizeof(*sgilabel))) { + fprintf(stderr, + _("Detected sgi disklabel with wrong checksum.\n")); + } + update_units(); + current_label_type = label_sgi; + partitions = 16; + sgi_volumes = 15; + return 1; +} + +static unsigned int +sgi_get_start_sector(int i) +{ + return SGI_SSWAP32(sgilabel->partitions[i].start_sector); +} + +static unsigned int +sgi_get_num_sectors(int i) +{ + return SGI_SSWAP32(sgilabel->partitions[i].num_sectors); +} + +static int +sgi_get_sysid(int i) +{ + return SGI_SSWAP32(sgilabel->partitions[i].id); +} + +static int +sgi_get_bootpartition(void) +{ + return SGI_SSWAP16(sgilabel->boot_part); +} + +static int +sgi_get_swappartition(void) +{ + return SGI_SSWAP16(sgilabel->swap_part); +} + +static void +sgi_list_table(int xtra) +{ + int i, w, wd; + int kpi = 0; /* kernel partition ID */ + + if(xtra) { + printf(_("\nDisk %s (SGI disk label): %d heads, %d sectors\n" + "%d cylinders, %d physical cylinders\n" + "%d extra sects/cyl, interleave %d:1\n" + "%s\n" + "Units = %s of %d * 512 bytes\n\n"), + disk_device, heads, sectors, cylinders, + SGI_SSWAP16(sgiparam.pcylcount), + SGI_SSWAP16(sgiparam.sparecyl), + SGI_SSWAP16(sgiparam.ilfact), + (char *)sgilabel, + str_units(PLURAL), units_per_sector); + } else { + printf( _("\nDisk %s (SGI disk label): " + "%d heads, %d sectors, %d cylinders\n" + "Units = %s of %d * 512 bytes\n\n"), + disk_device, heads, sectors, cylinders, + str_units(PLURAL), units_per_sector ); + } + + w = strlen(disk_device); + wd = strlen(_("Device")); + if (w < wd) + w = wd; + + printf(_("----- partitions -----\n" + "Pt# %*s Info Start End Sectors Id System\n"), + w + 2, _("Device")); + for (i = 0 ; i < partitions; i++) { + if( sgi_get_num_sectors(i) || debug ) { + uint32_t start = sgi_get_start_sector(i); + uint32_t len = sgi_get_num_sectors(i); + kpi++; /* only count nonempty partitions */ + printf( + "%2d: %s %4s %9ld %9ld %9ld %2x %s\n", +/* fdisk part number */ i+1, +/* device */ partname(disk_device, kpi, w+3), +/* flags */ (sgi_get_swappartition() == i) ? "swap" : +/* flags */ (sgi_get_bootpartition() == i) ? "boot" : " ", +/* start */ (long) scround(start), +/* end */ (long) scround(start+len)-1, +/* no odd flag on end */(long) len, +/* type id */ sgi_get_sysid(i), +/* type name */ partition_type(sgi_get_sysid(i))); + } + } + printf(_("----- Bootinfo -----\nBootfile: %s\n" + "----- Directory Entries -----\n"), + sgilabel->boot_file); + for (i = 0 ; i < sgi_volumes; i++) { + if (sgilabel->directory[i].vol_file_size) { + uint32_t start = SGI_SSWAP32(sgilabel->directory[i].vol_file_start); + uint32_t len = SGI_SSWAP32(sgilabel->directory[i].vol_file_size); + unsigned char *name = sgilabel->directory[i].vol_file_name; + + printf(_("%2d: %-10s sector%5u size%8u\n"), + i, (char*)name, (unsigned int) start, (unsigned int) len); + } + } +} + +static void +sgi_set_bootpartition(int i) +{ + sgilabel->boot_part = SGI_SSWAP16(((short)i)); +} + +static unsigned int +sgi_get_lastblock(void) +{ + return heads * sectors * cylinders; +} + +static void +sgi_set_swappartition(int i) +{ + sgilabel->swap_part = SGI_SSWAP16(((short)i)); +} + +static int +sgi_check_bootfile(const char* aFile) +{ + if (strlen(aFile) < 3) /* "/a\n" is minimum */ { + printf(_("\nInvalid Bootfile!\n" + "\tThe bootfile must be an absolute non-zero pathname,\n" + "\te.g. \"/unix\" or \"/unix.save\".\n")); + return 0; + } else { + if (strlen(aFile) > 16) { + printf(_("\n\tName of Bootfile too long: " + "16 bytes maximum.\n")); + return 0; + } else { + if (aFile[0] != '/') { + printf(_("\n\tBootfile must have a " + "fully qualified pathname.\n")); + return 0; + } + } + } + if (strncmp(aFile, (char*)sgilabel->boot_file, 16)) { + printf(_("\n\tBe aware, that the bootfile is not checked for existence.\n\t" + "SGI's default is \"/unix\" and for backup \"/unix.save\".\n")); + /* filename is correct and did change */ + return 1; + } + return 0; /* filename did not change */ +} + +static const char * +sgi_get_bootfile(void) +{ + return (char*)sgilabel->boot_file; +} + +static void +sgi_set_bootfile(const char* aFile) +{ + int i = 0; + + if (sgi_check_bootfile(aFile)) { + while (i < 16) { + if ((aFile[i] != '\n') /* in principle caught again by next line */ + && (strlen(aFile) > i)) + sgilabel->boot_file[i] = aFile[i]; + else + sgilabel->boot_file[i] = 0; + i++; + } + printf(_("\n\tBootfile is changed to \"%s\".\n"), sgilabel->boot_file); + } +} + +static void +create_sgiinfo(void) +{ + /* I keep SGI's habit to write the sgilabel to the second block */ + sgilabel->directory[0].vol_file_start = SGI_SSWAP32(2); + sgilabel->directory[0].vol_file_size = SGI_SSWAP32(sizeof(sgiinfo)); + strncpy((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8); +} + +static sgiinfo *fill_sgiinfo(void); + +static void +sgi_write_table(void) +{ + sgilabel->csum = 0; + sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum( + (unsigned int*)sgilabel, sizeof(*sgilabel))); + assert(two_s_complement_32bit_sum( + (unsigned int*)sgilabel, sizeof(*sgilabel)) == 0); + + if (lseek(fd, 0, SEEK_SET) < 0) + fdisk_fatal(unable_to_seek); + if (write(fd, sgilabel, SECTOR_SIZE) != SECTOR_SIZE) + fdisk_fatal(unable_to_write); + if (!strncmp((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8)) { + /* + * keep this habit of first writing the "sgilabel". + * I never tested whether it works without (AN 981002). + */ + sgiinfo *info = fill_sgiinfo(); + int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start); + if (lseek(fd, infostartblock*SECTOR_SIZE, SEEK_SET) < 0) + fdisk_fatal(unable_to_seek); + if (write(fd, info, SECTOR_SIZE) != SECTOR_SIZE) + fdisk_fatal(unable_to_write); + free(info); + } +} + +static int +compare_start(int *x, int *y) +{ + /* + * sort according to start sectors + * and prefers largest partition: + * entry zero is entire disk entry + */ + unsigned int i = *x; + unsigned int j = *y; + unsigned int a = sgi_get_start_sector(i); + unsigned int b = sgi_get_start_sector(j); + unsigned int c = sgi_get_num_sectors(i); + unsigned int d = sgi_get_num_sectors(j); + + if (a == b) + return (d > c) ? 1 : (d == c) ? 0 : -1; + return (a > b) ? 1 : -1; +} + + +static int +verify_sgi(int verbose) +{ + int Index[16]; /* list of valid partitions */ + int sortcount = 0; /* number of used partitions, i.e. non-zero lengths */ + int entire = 0, i = 0; + unsigned int start = 0; + long long gap = 0; /* count unused blocks */ + unsigned int lastblock = sgi_get_lastblock(); + + clearfreelist(); + for (i = 0; i < 16; i++) { + if (sgi_get_num_sectors(i) != 0) { + Index[sortcount++] = i; + if (sgi_get_sysid(i) == SGI_ENTIRE_DISK) { + if (entire++ == 1) { + if (verbose) + printf(_("More than one entire disk entry present.\n")); + } + } + } + } + if (sortcount == 0) { + if (verbose) + printf(_("No partitions defined\n")); + return (lastblock > 0) ? 1 : (lastblock == 0) ? 0 : -1; + } + qsort(Index, sortcount, sizeof(Index[0]), (void*)compare_start); + if (sgi_get_sysid(Index[0]) == SGI_ENTIRE_DISK) { + if ((Index[0] != 10) && verbose) + printf(_("IRIX likes when Partition 11 covers the entire disk.\n")); + if ((sgi_get_start_sector(Index[0]) != 0) && verbose) + printf(_("The entire disk partition should start " + "at block 0,\n" + "not at diskblock %d.\n"), + sgi_get_start_sector(Index[0])); + if (debug) /* I do not understand how some disks fulfil it */ + if ((sgi_get_num_sectors(Index[0]) != lastblock) && verbose) + printf(_("The entire disk partition is only %d diskblock large,\n" + "but the disk is %d diskblocks long.\n"), + sgi_get_num_sectors(Index[0]), lastblock); + lastblock = sgi_get_num_sectors(Index[0]); + } else { + if (verbose) + printf(_("One Partition (#11) should cover the entire disk.\n")); + if (debug > 2) + printf("sysid=%d\tpartition=%d\n", + sgi_get_sysid(Index[0]), Index[0]+1); + } + for (i = 1, start = 0; i < sortcount; i++) { + int cylsize = sgi_get_nsect() * sgi_get_ntrks(); + + if ((sgi_get_start_sector(Index[i]) % cylsize) != 0) { + if (debug) /* I do not understand how some disks fulfil it */ + if (verbose) + printf(_("Partition %d does not start on cylinder boundary.\n"), + Index[i]+1); + } + if (sgi_get_num_sectors(Index[i]) % cylsize != 0) { + if (debug) /* I do not understand how some disks fulfil it */ + if (verbose) + printf(_("Partition %d does not end on cylinder boundary.\n"), + Index[i]+1); + } + /* We cannot handle several "entire disk" entries. */ + if (sgi_get_sysid(Index[i]) == SGI_ENTIRE_DISK) continue; + if (start > sgi_get_start_sector(Index[i])) { + if (verbose) + printf(_("The Partition %d and %d overlap by %d sectors.\n"), + Index[i-1]+1, Index[i]+1, + start - sgi_get_start_sector(Index[i])); + if (gap > 0) gap = -gap; + if (gap == 0) gap = -1; + } + if (start < sgi_get_start_sector(Index[i])) { + if (verbose) + printf(_("Unused gap of %8u sectors - sectors %8u-%u\n"), + sgi_get_start_sector(Index[i]) - start, + start, sgi_get_start_sector(Index[i])-1); + gap += sgi_get_start_sector(Index[i]) - start; + add2freelist(start, sgi_get_start_sector(Index[i])); + } + start = sgi_get_start_sector(Index[i]) + + sgi_get_num_sectors(Index[i]); + if (debug > 1) { + if (verbose) + printf("%2d:%12d\t%12d\t%12d\n", Index[i], + sgi_get_start_sector(Index[i]), + sgi_get_num_sectors(Index[i]), + sgi_get_sysid(Index[i])); + } + } + if (start < lastblock) { + if (verbose) + printf(_("Unused gap of %8u sectors - sectors %8u-%u\n"), + lastblock - start, start, lastblock-1); + gap += lastblock - start; + add2freelist(start, lastblock); + } + /* + * Done with arithmetics + * Go for details now + */ + if (verbose) { + if (!sgi_get_num_sectors(sgi_get_bootpartition())) { + printf(_("\nThe boot partition does not exist.\n")); + } + if (!sgi_get_num_sectors(sgi_get_swappartition())) { + printf(_("\nThe swap partition does not exist.\n")); + } else { + if ((sgi_get_sysid(sgi_get_swappartition()) != SGI_SWAP) + && (sgi_get_sysid(sgi_get_swappartition()) != LINUX_SWAP)) + printf(_("\nThe swap partition has no swap type.\n")); + } + if (sgi_check_bootfile("/unix")) + printf(_("\tYou have chosen an unusual boot file name.\n")); + } + return (gap > 0) ? 1 : (gap == 0) ? 0 : -1; +} + +static int +sgi_gaps(void) +{ + /* + * returned value is: + * = 0 : disk is properly filled to the rim + * < 0 : there is an overlap + * > 0 : there is still some vacant space + */ + return verify_sgi(0); +} + +static void +sgi_change_sysid(int i, int sys) +{ + if( sgi_get_num_sectors(i) == 0 ) { /* caught already before, ... */ + printf(_("Sorry You may change the Tag of non-empty partitions.\n")); + return; + } + if (((sys != SGI_ENTIRE_DISK) && (sys != SGI_VOLHDR)) + && (sgi_get_start_sector(i) < 1) ) { + read_maybe_empty( + _("It is highly recommended that the partition at offset 0\n" + "is of type \"SGI volhdr\", the IRIX system will rely on it to\n" + "retrieve from its directory standalone tools like sash and fx.\n" + "Only the \"SGI volume\" entire disk section may violate this.\n" + "Type YES if you are sure about tagging this partition differently.\n")); + if (strcmp(line_ptr, _("YES\n"))) + return; + } + sgilabel->partitions[i].id = SGI_SSWAP32(sys); +} + +/* returns partition index of first entry marked as entire disk */ +static int +sgi_entire(void) +{ + int i; + + for (i = 0; i < 16; i++) + if (sgi_get_sysid(i) == SGI_VOLUME) + return i; + return -1; +} + +static void +sgi_set_partition(int i, unsigned int start, unsigned int length, int sys) +{ + sgilabel->partitions[i].id = SGI_SSWAP32(sys); + sgilabel->partitions[i].num_sectors = SGI_SSWAP32(length); + sgilabel->partitions[i].start_sector = SGI_SSWAP32(start); + set_changed(i); + if (sgi_gaps() < 0) /* rebuild freelist */ + printf(_("Do You know, You got a partition overlap on the disk?\n")); +} + +static void +sgi_set_entire(void) +{ + int n; + + for (n = 10; n < partitions; n++) { + if(!sgi_get_num_sectors(n) ) { + sgi_set_partition(n, 0, sgi_get_lastblock(), SGI_VOLUME); + break; + } + } +} + +static void +sgi_set_volhdr(void) +{ + int n; + + for (n = 8; n < partitions; n++) { + if (!sgi_get_num_sectors(n)) { + /* + * 5 cylinders is an arbitrary value I like + * IRIX 5.3 stored files in the volume header + * (like sash, symmon, fx, ide) with ca. 3200 + * sectors. + */ + if (heads * sectors * 5 < sgi_get_lastblock()) + sgi_set_partition(n, 0, heads * sectors * 5, SGI_VOLHDR); + break; + } + } +} + +static void +sgi_delete_partition(int i) +{ + sgi_set_partition(i, 0, 0, 0); +} + +static void +sgi_add_partition(int n, int sys) +{ + char mesg[256]; + unsigned int first = 0, last = 0; + + if (n == 10) { + sys = SGI_VOLUME; + } else if (n == 8) { + sys = 0; + } + if(sgi_get_num_sectors(n)) { + printf(_("Partition %d is already defined. Delete " + "it before re-adding it.\n"), n + 1); + return; + } + if ((sgi_entire() == -1) && (sys != SGI_VOLUME)) { + printf(_("Attempting to generate entire disk entry automatically.\n")); + sgi_set_entire(); + sgi_set_volhdr(); + } + if ((sgi_gaps() == 0) && (sys != SGI_VOLUME)) { + printf(_("The entire disk is already covered with partitions.\n")); + return; + } + if (sgi_gaps() < 0) { + printf(_("You got a partition overlap on the disk. Fix it first!\n")); + return; + } + snprintf(mesg, sizeof(mesg), _("First %s"), str_units(SINGULAR)); + while (1) { + if(sys == SGI_VOLUME) { + last = sgi_get_lastblock(); + first = read_int(0, 0, last-1, 0, mesg); + if (first != 0) { + printf(_("It is highly recommended that eleventh partition\n" + "covers the entire disk and is of type `SGI volume'\n")); + } + } else { + first = freelist[0].first; + last = freelist[0].last; + first = read_int(scround(first), scround(first), scround(last)-1, + 0, mesg); + } + if (display_in_cyl_units) + first *= units_per_sector; + else + first = first; /* align to cylinder if you know how ... */ + if(!last ) + last = isinfreelist(first); + if(last == 0) { + printf(_("You will get a partition overlap on the disk. " + "Fix it first!\n")); + } else + break; + } + snprintf(mesg, sizeof(mesg), _(" Last %s"), str_units(SINGULAR)); + last = read_int(scround(first), scround(last)-1, scround(last)-1, + scround(first), mesg)+1; + if (display_in_cyl_units) + last *= units_per_sector; + else + last = last; /* align to cylinder if You know how ... */ + if ( (sys == SGI_VOLUME) && (first != 0 || last != sgi_get_lastblock() ) ) + printf(_("It is highly recommended that eleventh partition\n" + "covers the entire disk and is of type `SGI volume'\n")); + sgi_set_partition(n, first, last-first, sys); +} + +#ifdef CONFIG_FEATURE_FDISK_ADVANCED +static void +create_sgilabel(void) +{ + struct hd_geometry geometry; + struct { + unsigned int start; + unsigned int nsect; + int sysid; + } old[4]; + int i = 0; + long longsectors; /* the number of sectors on the device */ + int res; /* the result from the ioctl */ + int sec_fac; /* the sector factor */ + + sec_fac = sector_size / 512; /* determine the sector factor */ + + fprintf( stderr, + _("Building a new SGI disklabel. Changes will remain in memory only,\n" + "until you decide to write them. After that, of course, the previous\n" + "content will be unrecoverably lost.\n\n")); + + sgi_other_endian = (BYTE_ORDER == LITTLE_ENDIAN); + res = ioctl(fd, BLKGETSIZE, &longsectors); + if (!ioctl(fd, HDIO_GETGEO, &geometry)) { + heads = geometry.heads; + sectors = geometry.sectors; + if (res == 0) { + /* the get device size ioctl was successful */ + cylinders = longsectors / (heads * sectors); + cylinders /= sec_fac; + } else { + /* otherwise print error and use truncated version */ + cylinders = geometry.cylinders; + fprintf(stderr, + _("Warning: BLKGETSIZE ioctl failed on %s. " + "Using geometry cylinder value of %d.\n" + "This value may be truncated for devices" + " > 33.8 GB.\n"), disk_device, cylinders); + } + } + for (i = 0; i < 4; i++) { + old[i].sysid = 0; + if (valid_part_table_flag(MBRbuffer)) { + if(get_part_table(i)->sys_ind) { + old[i].sysid = get_part_table(i)->sys_ind; + old[i].start = get_start_sect(get_part_table(i)); + old[i].nsect = get_nr_sects(get_part_table(i)); + printf(_("Trying to keep parameters of partition %d.\n"), i); + if (debug) + printf(_("ID=%02x\tSTART=%d\tLENGTH=%d\n"), + old[i].sysid, old[i].start, old[i].nsect); + } + } + } + + memset(MBRbuffer, 0, sizeof(MBRbuffer)); + sgilabel->magic = SGI_SSWAP32(SGI_LABEL_MAGIC); + sgilabel->boot_part = SGI_SSWAP16(0); + sgilabel->swap_part = SGI_SSWAP16(1); + + /* sizeof(sgilabel->boot_file) = 16 > 6 */ + memset(sgilabel->boot_file, 0, 16); + strcpy((char*)sgilabel->boot_file, "/unix"); + + sgilabel->devparam.skew = (0); + sgilabel->devparam.gap1 = (0); + sgilabel->devparam.gap2 = (0); + sgilabel->devparam.sparecyl = (0); + sgilabel->devparam.pcylcount = SGI_SSWAP16(geometry.cylinders); + sgilabel->devparam.head_vol0 = SGI_SSWAP16(0); + sgilabel->devparam.ntrks = SGI_SSWAP16(geometry.heads); + /* tracks/cylinder (heads) */ + sgilabel->devparam.cmd_tag_queue_depth = (0); + sgilabel->devparam.unused0 = (0); + sgilabel->devparam.unused1 = SGI_SSWAP16(0); + sgilabel->devparam.nsect = SGI_SSWAP16(geometry.sectors); + /* sectors/track */ + sgilabel->devparam.bytes = SGI_SSWAP16(512); + sgilabel->devparam.ilfact = SGI_SSWAP16(1); + sgilabel->devparam.flags = SGI_SSWAP32(TRACK_FWD| + IGNORE_ERRORS|RESEEK); + sgilabel->devparam.datarate = SGI_SSWAP32(0); + sgilabel->devparam.retries_on_error = SGI_SSWAP32(1); + sgilabel->devparam.ms_per_word = SGI_SSWAP32(0); + sgilabel->devparam.xylogics_gap1 = SGI_SSWAP16(0); + sgilabel->devparam.xylogics_syncdelay = SGI_SSWAP16(0); + sgilabel->devparam.xylogics_readdelay = SGI_SSWAP16(0); + sgilabel->devparam.xylogics_gap2 = SGI_SSWAP16(0); + sgilabel->devparam.xylogics_readgate = SGI_SSWAP16(0); + sgilabel->devparam.xylogics_writecont = SGI_SSWAP16(0); + memset( &(sgilabel->directory), 0, sizeof(struct volume_directory)*15 ); + memset( &(sgilabel->partitions), 0, sizeof(struct sgi_partinfo)*16 ); + current_label_type = label_sgi; + partitions = 16; + sgi_volumes = 15; + sgi_set_entire(); + sgi_set_volhdr(); + for (i = 0; i < 4; i++) { + if(old[i].sysid) { + sgi_set_partition(i, old[i].start, old[i].nsect, old[i].sysid); + } + } +} + +static void +sgi_set_xcyl(void) +{ + /* do nothing in the beginning */ +} +#endif /* CONFIG_FEATURE_FDISK_ADVANCED */ + +/* _____________________________________________________________ + */ + +static sgiinfo * +fill_sgiinfo(void) +{ + sgiinfo *info = calloc(1, sizeof(sgiinfo)); + + info->magic = SGI_SSWAP32(SGI_INFO_MAGIC); + info->b1 = SGI_SSWAP32(-1); + info->b2 = SGI_SSWAP16(-1); + info->b3 = SGI_SSWAP16(1); + /* You may want to replace this string !!!!!!! */ + strcpy( (char*)info->scsi_string, "IBM OEM 0662S12 3 30" ); + strcpy( (char*)info->serial, "0000" ); + info->check1816 = SGI_SSWAP16(18*256 +16 ); + strcpy( (char*)info->installer, "Sfx version 5.3, Oct 18, 1994" ); + return info; +} +#endif /* SGI_LABEL */ |