Apple-2gs-SW/hush
1
0
Fork 0
mirror of https://github.com/sheumann/hush.git synced 2024-12-22 14:30:31 +00:00
Code Issues Projects Releases Wiki Activity
34ecc3b7ae
hush/util-linux/fdisk_osf.c
Denys Vlasenko 015db5800c randomconfig fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-06-19 18:15:33 +02:00

1049 lines
29 KiB
C
Raw Blame History

/*
* Copyright (c) 1987, 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if ENABLE_FEATURE_OSF_LABEL
#ifndef BSD_DISKMAGIC
#define BSD_DISKMAGIC ((uint32_t) 0x82564557)
#endif
#ifndef BSD_MAXPARTITIONS
#define BSD_MAXPARTITIONS 16
#endif
#define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
#if defined(__alpha__) \
|| defined(__powerpc__) \
|| defined(__ia64__) \
|| defined(__hppa__)
# define BSD_LABELSECTOR 0
# define BSD_LABELOFFSET 64
#else
# define BSD_LABELSECTOR 1
# define BSD_LABELOFFSET 0
#endif
#define BSD_BBSIZE 8192 /* size of boot area, with label */
#define BSD_SBSIZE 8192 /* max size of fs superblock */
struct xbsd_disklabel {
uint32_t d_magic; /* the magic number */
int16_t d_type; /* drive type */
int16_t d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
char d_packname[16]; /* pack identifier */
/* disk geometry: */
uint32_t d_secsize; /* # of bytes per sector */
uint32_t d_nsectors; /* # of data sectors per track */
uint32_t d_ntracks; /* # of tracks per cylinder */
uint32_t d_ncylinders; /* # of data cylinders per unit */
uint32_t d_secpercyl; /* # of data sectors per cylinder */
uint32_t d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below
* are not counted in d_nsectors or d_secpercyl.
* Spare sectors are assumed to be physical sectors
* which occupy space at the end of each track and/or cylinder.
*/
uint16_t d_sparespertrack; /* # of spare sectors per track */
uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternate cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
uint32_t d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
* d_interleave, d_trackskew and d_cylskew describe perturbations
* in the media format used to compensate for a slow controller.
* Interleave is physical sector interleave, set up by the formatter
* or controller when formatting. When interleaving is in use,
* logically adjacent sectors are not physically contiguous,
* but instead are separated by some number of sectors.
* It is specified as the ratio of physical sectors traversed
* per logical sector. Thus an interleave of 1:1 implies contiguous
* layout, while 2:1 implies that logical sector 0 is separated
* by one sector from logical sector 1.
* d_trackskew is the offset of sector 0 on track N
* relative to sector 0 on track N-1 on the same cylinder.
* Finally, d_cylskew is the offset of sector 0 on cylinder N
* relative to sector 0 on cylinder N-1.
*/
uint16_t d_rpm; /* rotational speed */
uint16_t d_interleave; /* hardware sector interleave */
uint16_t d_trackskew; /* sector 0 skew, per track */
uint16_t d_cylskew; /* sector 0 skew, per cylinder */
uint32_t d_headswitch; /* head switch time, usec */
uint32_t d_trkseek; /* track-to-track seek, usec */
uint32_t d_flags; /* generic flags */
#define NDDATA 5
uint32_t d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
uint32_t d_spare[NSPARE]; /* reserved for future use */
uint32_t d_magic2; /* the magic number (again) */
uint16_t d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
uint16_t d_npartitions; /* number of partitions in following */
uint32_t d_bbsize; /* size of boot area at sn0, bytes */
uint32_t d_sbsize; /* max size of fs superblock, bytes */
struct xbsd_partition { /* the partition table */
uint32_t p_size; /* number of sectors in partition */
uint32_t p_offset; /* starting sector */
uint32_t p_fsize; /* filesystem basic fragment size */
uint8_t p_fstype; /* filesystem type, see below */
uint8_t p_frag; /* filesystem fragments per block */
uint16_t p_cpg; /* filesystem cylinders per group */
} d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
};
/* d_type values: */
#define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
#define BSD_DTYPE_MSCP 2 /* MSCP */
#define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */
#define BSD_DTYPE_SCSI 4 /* SCSI */
#define BSD_DTYPE_ESDI 5 /* ESDI interface */
#define BSD_DTYPE_ST506 6 /* ST506 etc. */
#define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */
#define BSD_DTYPE_HPFL 8 /* HP Fiber-link */
#define BSD_DTYPE_FLOPPY 10 /* floppy */
/* d_subtype values: */
#define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */
#define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
#define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
static const char *const xbsd_dktypenames[] = {
"unknown",
"SMD",
"MSCP",
"old DEC",
"SCSI",
"ESDI",
"ST506",
"HP-IB",
"HP-FL",
"type 9",
"floppy",
0
};
/*
* Filesystem type and version.
* Used to interpret other filesystem-specific
* per-partition information.
*/
#define BSD_FS_UNUSED 0 /* unused */
#define BSD_FS_SWAP 1 /* swap */
#define BSD_FS_V6 2 /* Sixth Edition */
#define BSD_FS_V7 3 /* Seventh Edition */
#define BSD_FS_SYSV 4 /* System V */
#define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
#define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
#define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
#define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
#define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
#define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
#define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */
#define BSD_FS_ISOFS BSD_FS_ISO9660
#define BSD_FS_BOOT 13 /* partition contains bootstrap */
#define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
#define BSD_FS_HFS 15 /* Macintosh HFS */
#define BSD_FS_ADVFS 16 /* Digital Unix AdvFS */
/* this is annoying, but it's also the way it is :-( */
#ifdef __alpha__
#define BSD_FS_EXT2 8 /* ext2 file system */
#else
#define BSD_FS_MSDOS 8 /* MS-DOS file system */
#endif
static const char *const xbsd_fstypes[] = {
"\x00" "unused", /* BSD_FS_UNUSED */
"\x01" "swap", /* BSD_FS_SWAP */
"\x02" "Version 6", /* BSD_FS_V6 */
"\x03" "Version 7", /* BSD_FS_V7 */
"\x04" "System V", /* BSD_FS_SYSV */
"\x05" "4.1BSD", /* BSD_FS_V71K */
"\x06" "Eighth Edition", /* BSD_FS_V8 */
"\x07" "4.2BSD", /* BSD_FS_BSDFFS */
#ifdef __alpha__
"\x08" "ext2", /* BSD_FS_EXT2 */
#else
"\x08" "MS-DOS", /* BSD_FS_MSDOS */
#endif
"\x09" "4.4LFS", /* BSD_FS_BSDLFS */
"\x0a" "unknown", /* BSD_FS_OTHER */
"\x0b" "HPFS", /* BSD_FS_HPFS */
"\x0c" "ISO-9660", /* BSD_FS_ISO9660 */
"\x0d" "boot", /* BSD_FS_BOOT */
"\x0e" "ADOS", /* BSD_FS_ADOS */
"\x0f" "HFS", /* BSD_FS_HFS */
"\x10" "AdvFS", /* BSD_FS_ADVFS */
NULL
};
/*
* flags shared by various drives:
*/
#define BSD_D_REMOVABLE 0x01 /* removable media */
#define BSD_D_ECC 0x02 /* supports ECC */
#define BSD_D_BADSECT 0x04 /* supports bad sector forw. */
#define BSD_D_RAMDISK 0x08 /* disk emulator */
#define BSD_D_CHAIN 0x10 /* can do back-back transfers */
#define BSD_D_DOSPART 0x20 /* within MSDOS partition */
/*
Changes:
19990319 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - i18n/nls
20000101 - David Huggins-Daines <dhuggins@linuxcare.com> - Better
support for OSF/1 disklabels on Alpha.
Also fixed unaligned accesses in alpha_bootblock_checksum()
*/
#define FREEBSD_PARTITION 0xa5
#define NETBSD_PARTITION 0xa9
static void xbsd_delete_part(void);
static void xbsd_new_part(void);
static void xbsd_write_disklabel(void);
static int xbsd_create_disklabel(void);
static void xbsd_edit_disklabel(void);
static void xbsd_write_bootstrap(void);
static void xbsd_change_fstype(void);
static int xbsd_get_part_index(int max);
static int xbsd_check_new_partition(int *i);
static void xbsd_list_types(void);
static uint16_t xbsd_dkcksum(struct xbsd_disklabel *lp);
static int xbsd_initlabel(struct partition *p);
static int xbsd_readlabel(struct partition *p);
static int xbsd_writelabel(struct partition *p);
#if defined(__alpha__)
static void alpha_bootblock_checksum(char *boot);
#endif
#if !defined(__alpha__)
static int xbsd_translate_fstype(int linux_type);
static void xbsd_link_part(void);
static struct partition *xbsd_part;
static int xbsd_part_index;
#endif
/* Group big globals data and allocate it in one go */
struct bsd_globals {
/* We access this through a uint64_t * when checksumming */
/* hopefully xmalloc gives us required alignment */
char disklabelbuffer[BSD_BBSIZE];
struct xbsd_disklabel xbsd_dlabel;
};
static struct bsd_globals *bsd_globals_ptr;
#define disklabelbuffer (bsd_globals_ptr->disklabelbuffer)
#define xbsd_dlabel (bsd_globals_ptr->xbsd_dlabel)
/* Code */
#define bsd_cround(n) \
(display_in_cyl_units ? ((n)/xbsd_dlabel.d_secpercyl) + 1 : (n))
/*
* Test whether the whole disk has BSD disk label magic.
*
* Note: often reformatting with DOS-type label leaves the BSD magic,
* so this does not mean that there is a BSD disk label.
*/
static int
check_osf_label(void)
{
if (xbsd_readlabel(NULL) == 0)
return 0;
return 1;
}
static int
bsd_trydev(const char * dev)
{
if (xbsd_readlabel(NULL) == 0)
return -1;
printf("\nBSD label for device: %s\n", dev);
xbsd_print_disklabel(0);
return 0;
}
static void
bsd_menu(void)
{
puts("Command Action");
puts("d\tdelete a BSD partition");
puts("e\tedit drive data");
puts("i\tinstall bootstrap");
puts("l\tlist known filesystem types");
puts("n\tadd a new BSD partition");
puts("p\tprint BSD partition table");
puts("q\tquit without saving changes");
puts("r\treturn to main menu");
puts("s\tshow complete disklabel");
puts("t\tchange a partition's filesystem id");
puts("u\tchange units (cylinders/sectors)");
puts("w\twrite disklabel to disk");
#if !defined(__alpha__)
puts("x\tlink BSD partition to non-BSD partition");
#endif
}
#if !defined(__alpha__)
static int
hidden(int type)
{
return type ^ 0x10;
}
static int
is_bsd_partition_type(int type)
{
return (type == FREEBSD_PARTITION ||
type == hidden(FREEBSD_PARTITION) ||
type == NETBSD_PARTITION ||
type == hidden(NETBSD_PARTITION));
}
#endif
static void
bsd_select(void)
{
#if !defined(__alpha__)
int t, ss;
struct partition *p;
for (t = 0; t < 4; t++) {
p = get_part_table(t);
if (p && is_bsd_partition_type(p->sys_ind)) {
xbsd_part = p;
xbsd_part_index = t;
ss = get_start_sect(xbsd_part);
if (ss == 0) {
printf("Partition %s has invalid starting sector 0\n",
partname(disk_device, t+1, 0));
return;
}
printf("Reading disklabel of %s at sector %u\n",
partname(disk_device, t+1, 0), ss + BSD_LABELSECTOR);
if (xbsd_readlabel(xbsd_part) == 0) {
if (xbsd_create_disklabel() == 0)
return;
break;
}
}
}
if (t == 4) {
printf("There is no *BSD partition on %s\n", disk_device);
return;
}
#elif defined(__alpha__)
if (xbsd_readlabel(NULL) == 0)
if (xbsd_create_disklabel() == 0)
exit(EXIT_SUCCESS);
#endif
while (1) {
bb_putchar('\n');
switch (tolower(read_nonempty("BSD disklabel command (m for help): "))) {
case 'd':
xbsd_delete_part();
break;
case 'e':
xbsd_edit_disklabel();
break;
case 'i':
xbsd_write_bootstrap();
break;
case 'l':
xbsd_list_types();
break;
case 'n':
xbsd_new_part();
break;
case 'p':
xbsd_print_disklabel(0);
break;
case 'q':
if (ENABLE_FEATURE_CLEAN_UP)
close_dev_fd();
exit(EXIT_SUCCESS);
case 'r':
return;
case 's':
xbsd_print_disklabel(1);
break;
case 't':
xbsd_change_fstype();
break;
case 'u':
change_units();
break;
case 'w':
xbsd_write_disklabel();
break;
#if !defined(__alpha__)
case 'x':
xbsd_link_part();
break;
#endif
default:
bsd_menu();
break;
}
}
}
static void
xbsd_delete_part(void)
{
int i;
i = xbsd_get_part_index(xbsd_dlabel.d_npartitions);
xbsd_dlabel.d_partitions[i].p_size = 0;
xbsd_dlabel.d_partitions[i].p_offset = 0;
xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
if (xbsd_dlabel.d_npartitions == i + 1)
while (xbsd_dlabel.d_partitions[xbsd_dlabel.d_npartitions-1].p_size == 0)
xbsd_dlabel.d_npartitions--;
}
static void
xbsd_new_part(void)
{
off_t begin, end;
char mesg[256];
int i;
if (!xbsd_check_new_partition(&i))
return;
#if !defined(__alpha__) && !defined(__powerpc__) && !defined(__hppa__)
begin = get_start_sect(xbsd_part);
end = begin + get_nr_sects(xbsd_part) - 1;
#else
begin = 0;
end = xbsd_dlabel.d_secperunit - 1;
#endif
snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
begin = read_int(bsd_cround(begin), bsd_cround(begin), bsd_cround(end),
0, mesg);
if (display_in_cyl_units)
begin = (begin - 1) * xbsd_dlabel.d_secpercyl;
snprintf(mesg, sizeof(mesg), "Last %s or +size or +sizeM or +sizeK",
str_units(SINGULAR));
end = read_int(bsd_cround(begin), bsd_cround(end), bsd_cround(end),
bsd_cround(begin), mesg);
if (display_in_cyl_units)
end = end * xbsd_dlabel.d_secpercyl - 1;
xbsd_dlabel.d_partitions[i].p_size = end - begin + 1;
xbsd_dlabel.d_partitions[i].p_offset = begin;
xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
}
static void
xbsd_print_disklabel(int show_all)
{
struct xbsd_disklabel *lp = &xbsd_dlabel;
struct xbsd_partition *pp;
int i, j;
if (show_all) {
static const int d_masks[] = { BSD_D_REMOVABLE, BSD_D_ECC, BSD_D_BADSECT };
#if defined(__alpha__)
printf("# %s:\n", disk_device);
#else
printf("# %s:\n", partname(disk_device, xbsd_part_index+1, 0));
#endif
if ((unsigned) lp->d_type < ARRAY_SIZE(xbsd_dktypenames)-1)
printf("type: %s\n", xbsd_dktypenames[lp->d_type]);
else
printf("type: %u\n", lp->d_type);
printf("disk: %.*s\n", (int) sizeof(lp->d_typename), lp->d_typename);
printf("label: %.*s\n", (int) sizeof(lp->d_packname), lp->d_packname);
printf("flags: ");
print_flags_separated(d_masks, "removable\0""ecc\0""badsect\0", lp->d_flags, " ");
bb_putchar('\n');
/* On various machines the fields of *lp are short/int/long */
/* In order to avoid problems, we cast them all to long. */
printf("bytes/sector: %lu\n", (long) lp->d_secsize);
printf("sectors/track: %lu\n", (long) lp->d_nsectors);
printf("tracks/cylinder: %lu\n", (long) lp->d_ntracks);
printf("sectors/cylinder: %lu\n", (long) lp->d_secpercyl);
printf("cylinders: %lu\n", (long) lp->d_ncylinders);
printf("rpm: %u\n", lp->d_rpm);
printf("interleave: %u\n", lp->d_interleave);
printf("trackskew: %u\n", lp->d_trackskew);
printf("cylinderskew: %u\n", lp->d_cylskew);
printf("headswitch: %lu\t\t# milliseconds\n",
(long) lp->d_headswitch);
printf("track-to-track seek: %lu\t# milliseconds\n",
(long) lp->d_trkseek);
printf("drivedata: ");
for (i = NDDATA - 1; i >= 0; i--)
if (lp->d_drivedata[i])
break;
if (i < 0)
i = 0;
for (j = 0; j <= i; j++)
printf("%lu ", (long) lp->d_drivedata[j]);
}
printf("\n%u partitions:\n", lp->d_npartitions);
printf("# start end size fstype [fsize bsize cpg]\n");
pp = lp->d_partitions;
for (i = 0; i < lp->d_npartitions; i++, pp++) {
if (pp->p_size) {
if (display_in_cyl_units && lp->d_secpercyl) {
printf(" %c: %8lu%c %8lu%c %8lu%c ",
'a' + i,
(unsigned long) pp->p_offset / lp->d_secpercyl + 1,
(pp->p_offset % lp->d_secpercyl) ? '*' : ' ',
(unsigned long) (pp->p_offset + pp->p_size + lp->d_secpercyl - 1) / lp->d_secpercyl,
((pp->p_offset + pp->p_size) % lp->d_secpercyl) ? '*' : ' ',
(long) pp->p_size / lp->d_secpercyl,
(pp->p_size % lp->d_secpercyl) ? '*' : ' '
);
} else {
printf(" %c: %8lu %8lu %8lu ",
'a' + i,
(long) pp->p_offset,
(long) pp->p_offset + pp->p_size - 1,
(long) pp->p_size
);
}
if ((unsigned) pp->p_fstype < ARRAY_SIZE(xbsd_fstypes)-1)
printf("%8.8s", xbsd_fstypes[pp->p_fstype]);
else
printf("%8x", pp->p_fstype);
switch (pp->p_fstype) {
case BSD_FS_UNUSED:
printf(" %5lu %5lu %5.5s ",
(long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, "");
break;
case BSD_FS_BSDFFS:
printf(" %5lu %5lu %5u ",
(long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, pp->p_cpg);
break;
default:
printf("%22.22s", "");
break;
}
bb_putchar('\n');
}
}
}
static void
xbsd_write_disklabel(void)
{
#if defined(__alpha__)
printf("Writing disklabel to %s\n", disk_device);
xbsd_writelabel(NULL);
#else
printf("Writing disklabel to %s\n",
partname(disk_device, xbsd_part_index + 1, 0));
xbsd_writelabel(xbsd_part);
#endif
reread_partition_table(0); /* no exit yet */
}
static int
xbsd_create_disklabel(void)
{
char c;
#if defined(__alpha__)
printf("%s contains no disklabel\n", disk_device);
#else
printf("%s contains no disklabel\n",
partname(disk_device, xbsd_part_index + 1, 0));
#endif
while (1) {
c = read_nonempty("Do you want to create a disklabel? (y/n) ");
if ((c|0x20) == 'y') {
if (xbsd_initlabel(
#if defined(__alpha__) || defined(__powerpc__) || defined(__hppa__) || \
defined(__s390__) || defined(__s390x__)
NULL
#else
xbsd_part
#endif
) == 1) {
xbsd_print_disklabel(1);
return 1;
}
return 0;
}
if ((c|0x20) == 'n')
return 0;
}
}
static int
edit_int(int def, const char *mesg)
{
mesg = xasprintf("%s (%u): ", mesg, def);
do {
if (!read_line(mesg))
goto ret;
} while (!isdigit(*line_ptr));
def = atoi(line_ptr);
ret:
free((char*)mesg);
return def;
}
static void
xbsd_edit_disklabel(void)
{
struct xbsd_disklabel *d;
d = &xbsd_dlabel;
#if defined(__alpha__) || defined(__ia64__)
d->d_secsize = edit_int(d->d_secsize , "bytes/sector");
d->d_nsectors = edit_int(d->d_nsectors , "sectors/track");
d->d_ntracks = edit_int(d->d_ntracks , "tracks/cylinder");
d->d_ncylinders = edit_int(d->d_ncylinders , "cylinders");
#endif
/* d->d_secpercyl can be != d->d_nsectors * d->d_ntracks */
while (1) {
d->d_secpercyl = edit_int(d->d_nsectors * d->d_ntracks,
"sectors/cylinder");
if (d->d_secpercyl <= d->d_nsectors * d->d_ntracks)
break;
printf("Must be <= sectors/track * tracks/cylinder (default)\n");
}
d->d_rpm = edit_int(d->d_rpm , "rpm");
d->d_interleave = edit_int(d->d_interleave, "interleave");
d->d_trackskew = edit_int(d->d_trackskew , "trackskew");
d->d_cylskew = edit_int(d->d_cylskew , "cylinderskew");
d->d_headswitch = edit_int(d->d_headswitch, "headswitch");
d->d_trkseek = edit_int(d->d_trkseek , "track-to-track seek");
d->d_secperunit = d->d_secpercyl * d->d_ncylinders;
}
static int
xbsd_get_bootstrap(char *path, void *ptr, int size)
{
int fdb;
fdb = open_or_warn(path, O_RDONLY);
if (fdb < 0) {
return 0;
}
if (full_read(fdb, ptr, size) < 0) {
bb_simple_perror_msg(path);
close(fdb);
return 0;
}
printf(" ... %s\n", path);
close(fdb);
return 1;
}
static void
sync_disks(void)
{
printf("Syncing disks\n");
sync();
/* sleep(4); What? */
}
static void
xbsd_write_bootstrap(void)
{
char path[MAXPATHLEN];
const char *bootdir = BSD_LINUX_BOOTDIR;
const char *dkbasename;
struct xbsd_disklabel dl;
char *d, *p, *e;
int sector;
if (xbsd_dlabel.d_type == BSD_DTYPE_SCSI)
dkbasename = "sd";
else
dkbasename = "wd";
snprintf(path, sizeof(path), "Bootstrap: %sboot -> boot%s (%s): ",
dkbasename, dkbasename, dkbasename);
if (read_line(path)) {
dkbasename = line_ptr;
}
snprintf(path, sizeof(path), "%s/%sboot", bootdir, dkbasename);
if (!xbsd_get_bootstrap(path, disklabelbuffer, (int) xbsd_dlabel.d_secsize))
return;
/* We need a backup of the disklabel (xbsd_dlabel might have changed). */
d = &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE];
memmove(&dl, d, sizeof(struct xbsd_disklabel));
/* The disklabel will be overwritten by 0's from bootxx anyway */
memset(d, 0, sizeof(struct xbsd_disklabel));
snprintf(path, sizeof(path), "%s/boot%s", bootdir, dkbasename);
if (!xbsd_get_bootstrap(path, &disklabelbuffer[xbsd_dlabel.d_secsize],
(int) xbsd_dlabel.d_bbsize - xbsd_dlabel.d_secsize))
return;
e = d + sizeof(struct xbsd_disklabel);
for (p = d; p < e; p++)
if (*p) {
printf("Bootstrap overlaps with disk label!\n");
exit(EXIT_FAILURE);
}
memmove(d, &dl, sizeof(struct xbsd_disklabel));
#if defined(__powerpc__) || defined(__hppa__)
sector = 0;
#elif defined(__alpha__)
sector = 0;
alpha_bootblock_checksum(disklabelbuffer);
#else
sector = get_start_sect(xbsd_part);
#endif
seek_sector(sector);
xwrite(dev_fd, disklabelbuffer, BSD_BBSIZE);
#if defined(__alpha__)
printf("Bootstrap installed on %s\n", disk_device);
#else
printf("Bootstrap installed on %s\n",
partname(disk_device, xbsd_part_index+1, 0));
#endif
sync_disks();
}
static void
xbsd_change_fstype(void)
{
int i;
i = xbsd_get_part_index(xbsd_dlabel.d_npartitions);
xbsd_dlabel.d_partitions[i].p_fstype = read_hex(xbsd_fstypes);
}
static int
xbsd_get_part_index(int max)
{
char prompt[sizeof("Partition (a-%c): ") + 16];
char l;
snprintf(prompt, sizeof(prompt), "Partition (a-%c): ", 'a' + max - 1);
do
l = tolower(read_nonempty(prompt));
while (l < 'a' || l > 'a' + max - 1);
return l - 'a';
}
static int
xbsd_check_new_partition(int *i)
{
/* room for more? various BSD flavours have different maxima */
if (xbsd_dlabel.d_npartitions == BSD_MAXPARTITIONS) {
int t;
for (t = 0; t < BSD_MAXPARTITIONS; t++)
if (xbsd_dlabel.d_partitions[t].p_size == 0)
break;
if (t == BSD_MAXPARTITIONS) {
printf("The maximum number of partitions has been created\n");
return 0;
}
}
*i = xbsd_get_part_index(BSD_MAXPARTITIONS);
if (*i >= xbsd_dlabel.d_npartitions)
xbsd_dlabel.d_npartitions = (*i) + 1;
if (xbsd_dlabel.d_partitions[*i].p_size != 0) {
printf("This partition already exists\n");
return 0;
}
return 1;
}
static void
xbsd_list_types(void)
{
list_types(xbsd_fstypes);
}
static uint16_t
xbsd_dkcksum(struct xbsd_disklabel *lp)
{
uint16_t *start, *end;
uint16_t sum = 0;
start = (uint16_t *) lp;
end = (uint16_t *) &lp->d_partitions[lp->d_npartitions];
while (start < end)
sum ^= *start++;
return sum;
}
static int
xbsd_initlabel(struct partition *p)
{
struct xbsd_disklabel *d = &xbsd_dlabel;
struct xbsd_partition *pp;
get_geometry();
memset(d, 0, sizeof(struct xbsd_disklabel));
d->d_magic = BSD_DISKMAGIC;
if (is_prefixed_with(disk_device, "/dev/sd"))
d->d_type = BSD_DTYPE_SCSI;
else
d->d_type = BSD_DTYPE_ST506;
#if !defined(__alpha__)
d->d_flags = BSD_D_DOSPART;
#else
d->d_flags = 0;
#endif
d->d_secsize = SECTOR_SIZE; /* bytes/sector */
d->d_nsectors = g_sectors; /* sectors/track */
d->d_ntracks = g_heads; /* tracks/cylinder (heads) */
d->d_ncylinders = g_cylinders;
d->d_secpercyl = g_sectors * g_heads;/* sectors/cylinder */
if (d->d_secpercyl == 0)
d->d_secpercyl = 1; /* avoid segfaults */
d->d_secperunit = d->d_secpercyl * d->d_ncylinders;
d->d_rpm = 3600;
d->d_interleave = 1;
d->d_trackskew = 0;
d->d_cylskew = 0;
d->d_headswitch = 0;
d->d_trkseek = 0;
d->d_magic2 = BSD_DISKMAGIC;
d->d_bbsize = BSD_BBSIZE;
d->d_sbsize = BSD_SBSIZE;
#if !defined(__alpha__)
d->d_npartitions = 4;
pp = &d->d_partitions[2]; /* Partition C should be NetBSD partition */
pp->p_offset = get_start_sect(p);
pp->p_size = get_nr_sects(p);
pp->p_fstype = BSD_FS_UNUSED;
pp = &d->d_partitions[3]; /* Partition D should be whole disk */
pp->p_offset = 0;
pp->p_size = d->d_secperunit;
pp->p_fstype = BSD_FS_UNUSED;
#else
d->d_npartitions = 3;
pp = &d->d_partitions[2]; /* Partition C should be the whole disk */
pp->p_offset = 0;
pp->p_size = d->d_secperunit;
pp->p_fstype = BSD_FS_UNUSED;
#endif
return 1;
}
/*
* Read a xbsd_disklabel from sector 0 or from the starting sector of p.
* If it has the right magic, return 1.
*/
static int
xbsd_readlabel(struct partition *p)
{
struct xbsd_disklabel *d;
int t, sector;
if (!bsd_globals_ptr)
bsd_globals_ptr = xzalloc(sizeof(*bsd_globals_ptr));
d = &xbsd_dlabel;
/* p is used only to get the starting sector */
#if !defined(__alpha__)
sector = (p ? get_start_sect(p) : 0);
#else
sector = 0;
#endif
seek_sector(sector);
if (BSD_BBSIZE != full_read(dev_fd, disklabelbuffer, BSD_BBSIZE))
fdisk_fatal(unable_to_read);
memmove(d, &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
sizeof(struct xbsd_disklabel));
if (d->d_magic != BSD_DISKMAGIC || d->d_magic2 != BSD_DISKMAGIC)
return 0;
for (t = d->d_npartitions; t < BSD_MAXPARTITIONS; t++) {
d->d_partitions[t].p_size = 0;
d->d_partitions[t].p_offset = 0;
d->d_partitions[t].p_fstype = BSD_FS_UNUSED;
}
if (d->d_npartitions > BSD_MAXPARTITIONS)
printf("Warning: too many partitions (%u, maximum is %u)\n",
d->d_npartitions, BSD_MAXPARTITIONS);
return 1;
}
static int
xbsd_writelabel(struct partition *p)
{
struct xbsd_disklabel *d = &xbsd_dlabel;
unsigned int sector;
#if !defined(__alpha__) && !defined(__powerpc__) && !defined(__hppa__)
sector = get_start_sect(p) + BSD_LABELSECTOR;
#else
(void)p; /* silence warning */
sector = BSD_LABELSECTOR;
#endif
d->d_checksum = 0;
d->d_checksum = xbsd_dkcksum(d);
/* This is necessary if we want to write the bootstrap later,
otherwise we'd write the old disklabel with the bootstrap.
*/
memmove(&disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
d, sizeof(struct xbsd_disklabel));
#if defined(__alpha__) && BSD_LABELSECTOR == 0
alpha_bootblock_checksum(disklabelbuffer);
seek_sector(0);
xwrite(dev_fd, disklabelbuffer, BSD_BBSIZE);
#else
seek_sector(sector);
lseek(dev_fd, BSD_LABELOFFSET, SEEK_CUR);
xwrite(dev_fd, d, sizeof(*d));
#endif
sync_disks();
return 1;
}
#if !defined(__alpha__)
static int
xbsd_translate_fstype(int linux_type)
{
switch (linux_type) {
case 0x01: /* DOS 12-bit FAT */
case 0x04: /* DOS 16-bit <32M */
case 0x06: /* DOS 16-bit >=32M */
case 0xe1: /* DOS access */
case 0xe3: /* DOS R/O */
case 0xf2: /* DOS secondary */
return BSD_FS_MSDOS;
case 0x07: /* OS/2 HPFS */
return BSD_FS_HPFS;
default:
return BSD_FS_OTHER;
}
}
static void
xbsd_link_part(void)
{
int k, i;
struct partition *p;
k = get_partition(1, g_partitions);
if (!xbsd_check_new_partition(&i))
return;
p = get_part_table(k);
xbsd_dlabel.d_partitions[i].p_size = get_nr_sects(p);
xbsd_dlabel.d_partitions[i].p_offset = get_start_sect(p);
xbsd_dlabel.d_partitions[i].p_fstype = xbsd_translate_fstype(p->sys_ind);
}
#endif
#if defined(__alpha__)
static void
alpha_bootblock_checksum(char *boot)
{
uint64_t *dp, sum;
int i;
dp = (uint64_t *)boot;
sum = 0;
for (i = 0; i < 63; i++)
sum += dp[i];
dp[63] = sum;
}
#endif /* __alpha__ */
/* Undefine 'global' tricks */
#undef disklabelbuffer
#undef xbsd_dlabel
#endif /* OSF_LABEL */
Reference in New Issue View Git Blame Copy Permalink