c1623066ca
o memory wasn't reclaimed in certain cases
o add more msgs under #ifdef DEBUG
o rewrite tangle of for loops for clarity
NB: Open_Disk should redo how it malloc's memory so the caller can free
everything. Documentation says the caller can free the disk list to
reclaim everything but this leaks the indirect strings. Fixing this
is simple for the sysctl case but adds complexity to the fallback,
non-sysctl, case.
709 lines
15 KiB
C
709 lines
15 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 <err.h>
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#include <sys/sysctl.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/diskslice.h>
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#ifndef PC98
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#include <sys/diskmbr.h>
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#endif
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#include <paths.h>
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#include "libdisk.h"
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#ifndef PC98
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#define DOSPTYP_EXTENDED 5
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#define DOSPTYP_ONTRACK 84
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#endif
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const char *chunk_n[] = {
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"whole",
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"unknown",
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"fat",
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"freebsd",
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"extended",
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"part",
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"unused",
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NULL
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};
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struct disk *
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Open_Disk(const char *name)
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{
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return Int_Open_Disk(name, 0);
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}
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#ifndef PC98
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static u_int32_t
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Read_Int32(u_int32_t *p)
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{
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u_int8_t *bp = (u_int8_t *)p;
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return bp[0] | (bp[1] << 8) | (bp[2] << 16) | (bp[3] << 24);
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}
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#endif
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struct disk *
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Int_Open_Disk(const char *name, u_long size)
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{
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int i,fd;
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struct diskslices ds;
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struct disklabel dl;
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char device[64], *buf;
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struct disk *d;
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u_long sector_size;
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#ifdef PC98
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unsigned char *p;
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#else
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struct dos_partition *dp;
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void *p;
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#endif
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u_long offset = 0;
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strlcpy(device, _PATH_DEV, sizeof(device));
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strlcat(device, name, sizeof(device));
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d = (struct disk *)malloc(sizeof *d);
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if(!d) return NULL;
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memset(d, 0, sizeof *d);
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fd = open(device, O_RDONLY);
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if (fd < 0) {
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#ifdef DEBUG
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warn("open(%s) failed", device);
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#endif
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return 0;
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}
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memset(&dl, 0, sizeof dl);
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if (ioctl(fd, DIOCGDINFO, &dl) < 0) {
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#ifdef DEBUG
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warn("DIOCGDINFO(%s) failed", device);
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#endif
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close(fd);
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return 0;
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}
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i = ioctl(fd, DIOCGSLICEINFO, &ds);
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if (i < 0) {
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#ifdef DEBUG
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warn("DIOCGSLICEINFO(%s) failed", device);
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#endif
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close(fd);
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return 0;
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}
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#ifdef DEBUG
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for(i = 0; i < ds.dss_nslices; i++)
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if(ds.dss_slices[i].ds_openmask)
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printf(" open(%d)=0x%2x",
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i, ds.dss_slices[i].ds_openmask);
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printf("\n");
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#endif
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/* XXX --- ds.dss_slice[WHOLE_DISK_SLICE].ds.size of MO disk is wrong!!! */
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#ifdef PC98
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if (!size)
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size = dl.d_ncylinders * dl.d_ntracks * dl.d_nsectors;
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#else
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if (!size)
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size = ds.dss_slices[WHOLE_DISK_SLICE].ds_size;
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#endif
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/* determine media sector size */
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if ((buf = malloc(MAX_SEC_SIZE)) == NULL)
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return NULL;
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for (sector_size = MIN_SEC_SIZE; sector_size <= MAX_SEC_SIZE; sector_size *= 2) {
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if (read(fd, buf, sector_size) == sector_size) {
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d->sector_size = sector_size;
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break;
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}
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}
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free (buf);
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if (sector_size > MAX_SEC_SIZE) {
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#ifdef DEBUG
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warn("Int_Open_Disk: could not determine sector size, "
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"calculated %u, max %u\n", sector_size, MAX_SEC_SIZE);
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#endif
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return NULL; /* could not determine sector size */
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}
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#ifdef PC98
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p = (unsigned char*)read_block(fd, 1, sector_size);
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#else
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p = read_block(fd, 0, sector_size);
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dp = (struct dos_partition*)(p + DOSPARTOFF);
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for (i = 0; i < NDOSPART; i++) {
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if (Read_Int32(&dp->dp_start) >= size)
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continue;
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if (Read_Int32(&dp->dp_start) + Read_Int32(&dp->dp_size) >= size)
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continue;
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if (!Read_Int32(&dp->dp_size))
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continue;
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if (dp->dp_typ == DOSPTYP_ONTRACK) {
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d->flags |= DISK_ON_TRACK;
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offset = 63;
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}
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}
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free(p);
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#endif
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d->bios_sect = dl.d_nsectors;
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d->bios_hd = dl.d_ntracks;
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d->name = strdup(name);
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if (dl.d_ntracks && dl.d_nsectors)
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d->bios_cyl = size / (dl.d_ntracks * dl.d_nsectors);
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#ifdef PC98
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if (Add_Chunk(d, -offset, size, name, whole, 0, 0, "-"))
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#else
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if (Add_Chunk(d, -offset, size, name, whole, 0, 0))
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#endif
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#ifdef DEBUG
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warn("Failed to add 'whole' chunk");
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#else
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{}
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#endif
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#ifdef __i386__
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#ifdef PC98
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/* XXX -- Quick Hack!
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* Check MS-DOS MO
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*/
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if ((*p == 0xf0 || *p == 0xf8) &&
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(*(p+1) == 0xff) &&
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(*(p+2) == 0xff)) {
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Add_Chunk(d, 0, size, name, fat, 0xa0a0, 0, name);
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free(p);
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goto pc98_mo_done;
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}
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free(p);
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#endif /* PC98 */
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for(i=BASE_SLICE;i<ds.dss_nslices;i++) {
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char sname[20];
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chunk_e ce;
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u_long flags=0;
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int subtype=0;
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if (! ds.dss_slices[i].ds_size)
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continue;
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ds.dss_slices[i].ds_offset -= offset;
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snprintf(sname, sizeof(sname), "%ss%d", name, i - 1);
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#ifdef PC98
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subtype = ds.dss_slices[i].ds_type |
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ds.dss_slices[i].ds_subtype << 8;
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switch (ds.dss_slices[i].ds_type & 0x7f) {
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case 0x14:
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ce = freebsd;
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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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ce = fat;
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break;
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#else /* IBM-PC */
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subtype = ds.dss_slices[i].ds_type;
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switch (ds.dss_slices[i].ds_type) {
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case 0xa5:
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ce = freebsd;
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break;
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case 0x1:
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case 0x6:
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case 0x4:
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case 0xb:
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case 0xc:
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case 0xe:
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ce = fat;
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break;
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case DOSPTYP_EXTENDED:
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case 0xf:
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ce = extended;
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break;
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#endif
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default:
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ce = unknown;
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break;
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}
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#ifdef PC98
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if (Add_Chunk(d, ds.dss_slices[i].ds_offset,
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ds.dss_slices[i].ds_size, sname, ce, subtype, flags,
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ds.dss_slices[i].ds_name))
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#else
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if (Add_Chunk(d, ds.dss_slices[i].ds_offset,
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ds.dss_slices[i].ds_size, sname, ce, subtype, flags))
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#endif
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#ifdef DEBUG
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warn("failed to add chunk for slice %d", i - 1);
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#else
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{}
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#endif
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#ifdef PC98
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if ((ds.dss_slices[i].ds_type & 0x7f) != 0x14)
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#else
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if (ds.dss_slices[i].ds_type != 0xa5)
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#endif
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continue;
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{
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struct disklabel dl;
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char pname[20];
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int j, k;
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strlcpy(pname, _PATH_DEV, sizeof(pname));
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strlcat(pname, sname, sizeof(pname));
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j = open(pname, O_RDONLY);
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if (j < 0) {
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#ifdef DEBUG
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warn("open(%s)", pname);
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#endif
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continue;
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}
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k = ioctl(j, DIOCGDINFO, &dl);
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if (k < 0) {
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#ifdef DEBUG
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warn("ioctl(%s, DIOCGDINFO)", pname);
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#endif
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close(j);
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continue;
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}
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close(j);
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for(j = 0; j <= dl.d_npartitions; j++) {
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if (j == RAW_PART)
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continue;
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if (j == 3)
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continue;
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if (j == dl.d_npartitions) {
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j = 3;
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dl.d_npartitions = 0;
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}
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if (!dl.d_partitions[j].p_size)
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continue;
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if (dl.d_partitions[j].p_size +
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dl.d_partitions[j].p_offset >
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ds.dss_slices[i].ds_size)
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continue;
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snprintf(pname, sizeof(pname), "%s%c", sname, j + 'a');
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if (Add_Chunk(d,
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dl.d_partitions[j].p_offset +
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ds.dss_slices[i].ds_offset,
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dl.d_partitions[j].p_size,
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pname,part,
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dl.d_partitions[j].p_fstype,
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#ifdef PC98
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0,
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ds.dss_slices[i].ds_name) && j != 3)
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#else
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0) && j != 3)
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#endif
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#ifdef DEBUG
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warn(
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"Failed to add chunk for partition %c [%lu,%lu]",
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j + 'a', dl.d_partitions[j].p_offset,
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dl.d_partitions[j].p_size);
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#else
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{}
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#endif
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}
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}
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}
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#endif /* __i386__ */
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#ifdef __alpha__
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{
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struct disklabel dl;
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char pname[20];
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int j,k;
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strlcpy(pname, _PATH_DEV, sizeof(pname));
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strlcat(pname, name, sizeof(pname));
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j = open(pname, O_RDONLY);
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if (j < 0) {
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#ifdef DEBUG
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warn("open(%s)", pname);
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#endif
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goto nolabel;
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}
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k = ioctl(j, DIOCGDINFO, &dl);
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if (k < 0) {
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#ifdef DEBUG
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warn("ioctl(%s, DIOCGDINFO)", pname);
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#endif
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close(j);
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goto nolabel;
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}
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close(j);
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All_FreeBSD(d, 1);
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for(j = 0; j <= dl.d_npartitions; j++) {
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if (j == RAW_PART)
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continue;
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if (j == 3)
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continue;
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if (j == dl.d_npartitions) {
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j = 3;
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dl.d_npartitions = 0;
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}
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if (!dl.d_partitions[j].p_size)
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continue;
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if (dl.d_partitions[j].p_size +
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dl.d_partitions[j].p_offset >
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ds.dss_slices[WHOLE_DISK_SLICE].ds_size)
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continue;
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snprintf(pname, sizeof(pname), "%s%c", name, j + 'a');
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if (Add_Chunk(d,
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dl.d_partitions[j].p_offset,
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dl.d_partitions[j].p_size,
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pname,part,
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dl.d_partitions[j].p_fstype,
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0) && j != 3)
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#ifdef DEBUG
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warn(
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"Failed to add chunk for partition %c [%lu,%lu]",
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j + 'a', dl.d_partitions[j].p_offset,
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dl.d_partitions[j].p_size);
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#else
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{}
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#endif
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}
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nolabel:;
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}
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#endif /* __alpha__ */
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#ifdef PC98
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pc98_mo_done:
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#endif
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close(fd);
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Fixup_Names(d);
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return d;
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}
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void
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Debug_Disk(struct disk *d)
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{
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printf("Debug_Disk(%s)", d->name);
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printf(" flags=%lx", d->flags);
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#if 0
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printf(" real_geom=%lu/%lu/%lu", d->real_cyl, d->real_hd, d->real_sect);
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#endif
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printf(" bios_geom=%lu/%lu/%lu = %lu\n",
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d->bios_cyl, d->bios_hd, d->bios_sect,
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d->bios_cyl * d->bios_hd * d->bios_sect);
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#if defined(PC98)
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printf(" boot1=%p, boot2=%p, bootipl=%p, bootmenu=%p\n",
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d->boot1, d->boot2, d->bootipl, d->bootmenu);
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#elif defined(__i386__)
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printf(" boot1=%p, boot2=%p, bootmgr=%p\n",
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d->boot1, d->boot2, d->bootmgr);
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#elif defined(__alpha__)
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printf(" boot1=%p, bootmgr=%p\n",
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d->boot1, d->bootmgr);
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#endif
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Debug_Chunk(d->chunks);
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}
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void
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Free_Disk(struct disk *d)
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{
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if(d->chunks) Free_Chunk(d->chunks);
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if(d->name) free(d->name);
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#ifdef PC98
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if(d->bootipl) free(d->bootipl);
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if(d->bootmenu) free(d->bootmenu);
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#else
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if(d->bootmgr) free(d->bootmgr);
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#endif
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if(d->boot1) free(d->boot1);
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#if defined(__i386__)
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if(d->boot2) free(d->boot2);
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#endif
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free(d);
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}
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struct disk *
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Clone_Disk(struct disk *d)
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{
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struct disk *d2;
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d2 = (struct disk*) malloc(sizeof *d2);
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if(!d2) return NULL;
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*d2 = *d;
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d2->name = strdup(d2->name);
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d2->chunks = Clone_Chunk(d2->chunks);
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#ifdef PC98
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if(d2->bootipl) {
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d2->bootipl = malloc(d2->bootipl_size);
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memcpy(d2->bootipl, d->bootipl, d2->bootipl_size);
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}
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if(d2->bootmenu) {
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d2->bootmenu = malloc(d2->bootmenu_size);
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memcpy(d2->bootmenu, d->bootmenu, d2->bootmenu_size);
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}
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#else
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if(d2->bootmgr) {
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d2->bootmgr = malloc(d2->bootmgr_size);
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memcpy(d2->bootmgr, d->bootmgr, d2->bootmgr_size);
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}
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#endif
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#if defined(__i386__)
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if(d2->boot1) {
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d2->boot1 = malloc(512);
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memcpy(d2->boot1, d->boot1, 512);
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}
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if(d2->boot2) {
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d2->boot2 = malloc(512 * 15);
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memcpy(d2->boot2, d->boot2, 512 * 15);
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}
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#elif defined(__alpha__)
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|
if(d2->boot1) {
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|
d2->boot1 = malloc(512 * 15);
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|
memcpy(d2->boot1, d->boot1, 512 * 15);
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}
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|
#endif
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|
return d2;
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}
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|
|
#if 0
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|
void
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|
Collapse_Disk(struct disk *d)
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{
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while(Collapse_Chunk(d, d->chunks))
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;
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}
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|
#endif
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|
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#ifdef PC98
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static char * device_list[] = {"wd", "aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
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|
#else
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|
static char * device_list[] = {"aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
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|
#endif
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|
|
int qstrcmp(const void* a, const void* b) {
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|
|
char *str1 = *(char**)a;
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|
char *str2 = *(char**)b;
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|
return strcmp(str1, str2);
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}
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|
|
char **
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|
Disk_Names()
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|
{
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|
int i,j,disk_cnt;
|
|
char disk[25];
|
|
char diskname[25];
|
|
struct stat st;
|
|
struct diskslices ds;
|
|
int fd;
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|
static char **disks;
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|
int error;
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|
size_t listsize;
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|
char *disklist;
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|
|
disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
|
|
if (disks == NULL)
|
|
return NULL;
|
|
memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
|
|
error = sysctlbyname("kern.disks", NULL, &listsize, NULL, 0);
|
|
if (!error) {
|
|
disklist = (char *)malloc(listsize);
|
|
if (disklist == NULL) {
|
|
free(disks);
|
|
return NULL;
|
|
}
|
|
memset(disklist, 0, listsize);
|
|
error = sysctlbyname("kern.disks", disklist, &listsize, NULL, 0);
|
|
if (error) {
|
|
free(disklist);
|
|
free(disks);
|
|
return NULL;
|
|
}
|
|
for (disk_cnt = 0; disk_cnt < MAX_NO_DISKS; disk_cnt++) {
|
|
disks[disk_cnt] = strsep(&disklist, " ");
|
|
if (disks[disk_cnt] == NULL)
|
|
break;
|
|
}
|
|
} else {
|
|
warn("kern.disks sysctl not available");
|
|
disk_cnt = 0;
|
|
for (j = 0; device_list[j]; j++) {
|
|
if(disk_cnt >= MAX_NO_DISKS)
|
|
break;
|
|
for (i = 0; i < MAX_NO_DISKS; i++) {
|
|
snprintf(diskname, sizeof(diskname), "%s%d",
|
|
device_list[j], i);
|
|
snprintf(disk, sizeof(disk), _PATH_DEV"%s", diskname);
|
|
if (stat(disk, &st) || !(st.st_mode & S_IFCHR))
|
|
continue;
|
|
if ((fd = open(disk, O_RDWR)) == -1)
|
|
continue;
|
|
if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
|
|
#ifdef DEBUG
|
|
warn("DIOCGSLICEINFO %s", disk);
|
|
#endif
|
|
close(fd);
|
|
continue;
|
|
}
|
|
close(fd);
|
|
disks[disk_cnt++] = strdup(diskname);
|
|
if(disk_cnt >= MAX_NO_DISKS)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
qsort(disks, disk_cnt, sizeof(char*), qstrcmp);
|
|
|
|
return disks;
|
|
}
|
|
|
|
#ifdef PC98
|
|
void
|
|
Set_Boot_Mgr(struct disk *d, const u_char *bootipl, const size_t bootipl_size,
|
|
const u_char *bootmenu, const size_t bootmenu_size)
|
|
#else
|
|
void
|
|
Set_Boot_Mgr(struct disk *d, const u_char *b, const size_t s)
|
|
#endif
|
|
{
|
|
#ifdef PC98
|
|
if (bootipl_size % d->sector_size != 0)
|
|
return;
|
|
if (d->bootipl)
|
|
free(d->bootipl);
|
|
if (!bootipl) {
|
|
d->bootipl = NULL;
|
|
} else {
|
|
d->bootipl_size = bootipl_size;
|
|
d->bootipl = malloc(bootipl_size);
|
|
if(!d->bootipl) return;
|
|
memcpy(d->bootipl, bootipl, bootipl_size);
|
|
}
|
|
|
|
if (bootmenu_size % d->sector_size != 0)
|
|
return;
|
|
if (d->bootmenu)
|
|
free(d->bootmenu);
|
|
if (!bootmenu) {
|
|
d->bootmenu = NULL;
|
|
} else {
|
|
d->bootmenu_size = bootmenu_size;
|
|
d->bootmenu = malloc(bootmenu_size);
|
|
if(!d->bootmenu) return;
|
|
memcpy(d->bootmenu, bootmenu, bootmenu_size);
|
|
}
|
|
#else
|
|
if (s % d->sector_size != 0)
|
|
return;
|
|
if (d->bootmgr)
|
|
free(d->bootmgr);
|
|
if (!b) {
|
|
d->bootmgr = NULL;
|
|
} else {
|
|
d->bootmgr_size = s;
|
|
d->bootmgr = malloc(s);
|
|
if(!d->bootmgr) return;
|
|
memcpy(d->bootmgr, b, s);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int
|
|
Set_Boot_Blocks(struct disk *d, const u_char *b1, const u_char *b2)
|
|
{
|
|
#if defined(__i386__)
|
|
if (d->boot1) free(d->boot1);
|
|
d->boot1 = malloc(512);
|
|
if(!d->boot1) return -1;
|
|
memcpy(d->boot1, b1, 512);
|
|
if (d->boot2) free(d->boot2);
|
|
d->boot2 = malloc(15 * 512);
|
|
if(!d->boot2) return -1;
|
|
memcpy(d->boot2, b2, 15 * 512);
|
|
#elif defined(__alpha__)
|
|
if (d->boot1) free(d->boot1);
|
|
d->boot1 = malloc(15 * 512);
|
|
if(!d->boot1) return -1;
|
|
memcpy(d->boot1, b1, 15 * 512);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
const char *
|
|
slice_type_name( int type, int subtype )
|
|
{
|
|
switch (type) {
|
|
case 0: return "whole";
|
|
#ifndef PC98
|
|
case 1: switch (subtype) {
|
|
case 1: return "fat (12-bit)";
|
|
case 2: return "XENIX /";
|
|
case 3: return "XENIX /usr";
|
|
case 4: return "fat (16-bit,<=32Mb)";
|
|
case 5: return "extended DOS";
|
|
case 6: return "fat (16-bit,>32Mb)";
|
|
case 7: return "NTFS/HPFS/QNX";
|
|
case 8: return "AIX bootable";
|
|
case 9: return "AIX data";
|
|
case 10: return "OS/2 bootmgr";
|
|
case 11: return "fat (32-bit)";
|
|
case 12: return "fat (32-bit,LBA)";
|
|
case 14: return "fat (16-bit,>32Mb,LBA)";
|
|
case 15: return "extended DOS, LBA";
|
|
case 18: return "Compaq Diagnostic";
|
|
case 84: return "OnTrack diskmgr";
|
|
case 100: return "Netware 2.x";
|
|
case 101: return "Netware 3.x";
|
|
case 115: return "SCO UnixWare";
|
|
case 128: return "Minix 1.1";
|
|
case 129: return "Minix 1.5";
|
|
case 130: return "linux_swap";
|
|
case 131: return "ext2fs";
|
|
case 166: return "OpenBSD FFS"; /* 0xA6 */
|
|
case 169: return "NetBSD FFS"; /* 0xA9 */
|
|
case 182: return "OpenBSD"; /* dedicated */
|
|
case 183: return "bsd/os";
|
|
case 184: return "bsd/os swap";
|
|
case 238: return "EFI GPT";
|
|
case 239: return "EFI Sys. Part.";
|
|
default: return "unknown";
|
|
}
|
|
#endif
|
|
case 2: return "fat";
|
|
case 3: switch (subtype) {
|
|
#ifdef PC98
|
|
case 0xc494: return "freebsd";
|
|
#else
|
|
case 165: return "freebsd";
|
|
#endif
|
|
default: return "unknown";
|
|
}
|
|
#ifndef PC98
|
|
case 4: return "extended";
|
|
case 5: return "part";
|
|
case 6: return "unused";
|
|
#endif
|
|
default: return "unknown";
|
|
}
|
|
}
|