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