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freebsd/lib/libdisk/open_disk.c
Marcel Moolenaar f5ea9b34c6 o Move Int_Open_Disk() from disk.c to open_disk.c for use by all 
platforms except ia64 and use Int_Open_Disk() in open_ia64_disk.c
   on ia64. We need to know more than GEOM can provide us so we're
   forced to read from the disk. Move uuid_type() to open_ia64_disk.c
   and remove all references on non-ia64.
o  Pass the GEOM conftxt to Int_Open_Disk() so that only Open_Disk()
   needs to know about GEOM and libdisk can more easily be used with
   media not handled by GEOM.
o  Create an ia64 specific definiton of struct disk on ia64, because
   we don't need/have most of the fields other platforms need and
   other fields not applicable on platforms other than ia64.
o  Do not compile change.c on ia64. It's too PC specific.
o  In Fixup_Names() in create_chunk.c, try all partition numbers
   that are valid for the GPT disk. We have the total number of
   partitions that can be allocated in the disk structure on ia64.
   Also, use the GPT partition naming if we're creating one under
   a chunk of type "whole". It's a GPT partition in that case.
o  In Create_Chunk(), compile-out the PC specific code on ia64 that
   checks BIOS geometry restrictions.
o  In Debug_Disk() in disk.c, dump the ia64 specific fields.
o  Save the partition index in the chunk on ia64 so that we can
   preserve it when we write the data back to disk. This avoids that
   partitions get moved around or swapped after installing FreeBSD,
   which may render a disk unusable.
2003-11-02 08:39:08 +00:00

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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <inttypes.h>
#include <err.h>
#include <sys/sysctl.h>
#include <sys/stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/gpt.h>
#include <paths.h>
#include "libdisk.h"
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#ifdef DEBUG
#define DPRINT(x) warn x
#define DPRINTX(x) warnx x
#else
#define DPRINT(x)
#define DPRINTX(x)
#endif
struct disk *
Int_Open_Disk(const char *name, char *conftxt)
{
struct disk *d;
int i;
char *p, *q, *r, *a, *b, *n, *t, *sn;
off_t o, len, off;
u_int l, s, ty, sc, hd, alt;
off_t lo[10];
for (p = conftxt; p != NULL && *p; p = strchr(p, '\n')) {
if (*p == '\n')
p++;
a = strsep(&p, " ");
if (strcmp(a, "0"))
continue;
a = strsep(&p, " ");
if (strcmp(a, "DISK"))
continue;
a = strsep(&p, " ");
if (strcmp(a, name))
continue;
break;
}
q = strchr(p, '\n');
if (q != NULL)
*q++ = '\0';
d = (struct disk *)calloc(sizeof *d, 1);
if(d == NULL)
return NULL;
d->name = strdup(name);
a = strsep(&p, " "); /* length in bytes */
len = strtoimax(a, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
a = strsep(&p, " "); /* sectorsize */
s = strtoul(a, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
if (s == 0)
return (NULL);
d->sector_size = s;
len /= s; /* media size in number of sectors. */
if (Add_Chunk(d, 0, len, name, whole, 0, 0, "-"))
DPRINT(("Failed to add 'whole' chunk"));
for (;;) {
a = strsep(&p, " ");
if (a == NULL)
break;
b = strsep(&p, " ");
o = strtoul(b, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
if (!strcmp(a, "hd"))
d->bios_hd = o;
else if (!strcmp(a, "sc"))
d->bios_sect = o;
else
printf("HUH ? <%s> <%s>\n", a, b);
}
/*
* Calculate the number of cylinders this disk must have. If we have
* an obvious insanity, we set the number of cyclinders to zero.
*/
o = d->bios_hd * d->bios_sect;
d->bios_cyl = (o != 0) ? len / o : 0;
p = q;
lo[0] = 0;
for (; p != NULL && *p; p = q) {
q = strchr(p, '\n');
if (q != NULL)
*q++ = '\0';
a = strsep(&p, " "); /* Index */
if (!strcmp(a, "0"))
break;
l = strtoimax(a, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
t = strsep(&p, " "); /* Type {SUN, BSD, MBR, PC98, GPT} */
n = strsep(&p, " "); /* name */
a = strsep(&p, " "); /* len */
len = strtoimax(a, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
a = strsep(&p, " "); /* secsize */
s = strtoimax(a, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
for (;;) {
a = strsep(&p, " ");
if (a == NULL)
break;
/* XXX: Slice name may include a space. */
if (!strcmp(a, "sn")) {
sn = p;
break;
}
b = strsep(&p, " ");
o = strtoimax(b, &r, 0);
if (*r) {
printf("BARF %d <%d>\n", __LINE__, *r);
exit (0);
}
if (!strcmp(a, "o"))
off = o;
else if (!strcmp(a, "i"))
i = o;
else if (!strcmp(a, "ty"))
ty = o;
else if (!strcmp(a, "sc"))
sc = o;
else if (!strcmp(a, "hd"))
hd = o;
else if (!strcmp(a, "alt"))
alt = o;
}
/* PLATFORM POLICY BEGIN ----------------------------------- */
if (platform == p_sparc64 && !strcmp(t, "SUN") && i == 2)
continue;
if (platform == p_sparc64 && !strcmp(t, "SUN") &&
d->chunks->part->part == NULL) {
d->bios_hd = hd;
d->bios_sect = sc;
o = d->chunks->size / (hd * sc);
o *= (hd * sc);
o -= alt * hd * sc;
if (Add_Chunk(d, 0, o, name, freebsd, 0, 0, "-"))
DPRINT(("Failed to add 'freebsd' chunk"));
}
if (platform == p_alpha && !strcmp(t, "BSD") &&
d->chunks->part->part == NULL) {
if (Add_Chunk(d, 0, d->chunks->size, name, freebsd,
0, 0, "-"))
DPRINT(("Failed to add 'freebsd' chunk"));
}
if (!strcmp(t, "BSD") && i == RAW_PART)
continue;
/* PLATFORM POLICY END ------------------------------------- */
off /= s;
len /= s;
off += lo[l - 1];
lo[l] = off;
if (!strcmp(t, "SUN"))
i = Add_Chunk(d, off, len, n, part, 0, 0, 0);
else if (!strncmp(t, "MBR", 3)) {
switch (ty) {
case 0xa5:
i = Add_Chunk(d, off, len, n, freebsd, ty, 0, 0);
break;
case 0x01:
case 0x04:
case 0x06:
case 0x0b:
case 0x0c:
case 0x0e:
i = Add_Chunk(d, off, len, n, fat, ty, 0, 0);
break;
case 0xef: /* EFI */
i = Add_Chunk(d, off, len, n, efi, ty, 0, 0);
break;
default:
i = Add_Chunk(d, off, len, n, mbr, ty, 0, 0);
break;
}
} else if (!strcmp(t, "BSD"))
i = Add_Chunk(d, off, len, n, part, ty, 0, 0);
else if (!strcmp(t, "PC98")) {
switch (ty & 0x7f) {
case 0x14:
i = Add_Chunk(d, off, len, n, freebsd, ty, 0,
sn);
break;
case 0x20:
case 0x21:
case 0x22:
case 0x23:
case 0x24:
i = Add_Chunk(d, off, len, n, fat, ty, 0, sn);
break;
default:
i = Add_Chunk(d, off, len, n, pc98, ty, 0, sn);
break;
}
} else if (!strcmp(t, "GPT"))
i = Add_Chunk(d, off, len, n, ty, 0, 0, 0);
else if (!strcmp(t, "BDE"))
; /* nothing */
else if (!strcmp(t, "CCD"))
; /* nothing */
else {
printf("BARF %d\n", __LINE__);
exit(0);
}
}
/* PLATFORM POLICY BEGIN ------------------------------------- */
/* We have a chance to do things on a blank disk here */
if (platform == p_sparc64 && d->chunks->part->part == NULL) {
hd = d->bios_hd;
sc = d->bios_sect;
o = d->chunks->size / (hd * sc);
o *= (hd * sc);
o -= 2 * hd * sc;
if (Add_Chunk(d, 0, o, name, freebsd, 0, 0, "-"))
DPRINT(("Failed to add 'freebsd' chunk"));
}
/* PLATFORM POLICY END --------------------------------------- */
return (d);
i = 0;
}
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