2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
9 * $FreeBSD: src/lib/libdisk/write_disk.c,v 1.28.2.10 2001/05/13 21:01:38 jkh Exp $
10 * $DragonFly: src/lib/libdisk/Attic/write_disk.c,v 1.4 2005/03/13 15:10:03 swildner Exp $
19 #include <sys/types.h>
21 #include <sys/ioctl.h>
22 #include <sys/disklabel.h>
23 #include <sys/diskslice.h>
24 #include <sys/diskmbr.h>
28 #define DOSPTYP_EXTENDED 5
32 #define DEF_INTERLEAVE 1
34 #define WHERE(offset,disk) (disk->flags & DISK_ON_TRACK ? offset + 63 : offset)
36 /* XXX: A lot of hardcoded 512s probably should be foo->sector_size;
37 I'm not sure which, so I leave it like it worked before. --schweikh */
39 Write_FreeBSD(int fd, struct disk *new, struct disk *old, struct chunk *c1)
47 for(i = 0; i < BBSIZE/512; i++) {
48 p = read_block(fd, WHERE(i + c1->offset, new), 512);
49 memcpy(buf + 512 * i, p, 512);
54 memcpy(buf, new->boot1, 512);
57 memcpy(buf + 512, new->boot2, BBSIZE-512);
60 dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET);
61 memset(dl, 0, sizeof *dl);
63 for(c2 = c1->part; c2; c2 = c2->next) {
64 if (c2->type == unused) continue;
65 if (!strcmp(c2->name, "X")) continue;
66 j = c2->name[strlen(new->name) + 2] - 'a';
67 if (j < 0 || j >= MAXPARTITIONS || j == RAW_PART) {
69 warn("weird partition letter %c", c2->name[strlen(new->name) + 2]);
73 dl->d_partitions[j].p_size = c2->size;
74 dl->d_partitions[j].p_offset = c2->offset;
75 dl->d_partitions[j].p_fstype = c2->subtype;
78 dl->d_bbsize = BBSIZE;
80 * Add in defaults for superblock size, interleave, and rpms
82 dl->d_sbsize = SBSIZE;
83 dl->d_interleave = DEF_INTERLEAVE;
86 strcpy(dl->d_typename, c1->name);
89 dl->d_secperunit = new->chunks->size;
90 dl->d_ncylinders = new->bios_cyl;
91 dl->d_ntracks = new->bios_hd;
92 dl->d_nsectors = new->bios_sect;
93 dl->d_secpercyl = dl->d_ntracks * dl->d_nsectors;
95 dl->d_npartitions = MAXPARTITIONS;
97 dl->d_type = new->name[0] == 's' || new->name[0] == 'd' ||
98 new->name[0] == 'o' ? DTYPE_SCSI : DTYPE_ESDI;
99 dl->d_partitions[RAW_PART].p_size = c1->size;
100 dl->d_partitions[RAW_PART].p_offset = c1->offset;
102 if(new->flags & DISK_ON_TRACK)
103 for(i=0;i<MAXPARTITIONS;i++)
104 if (dl->d_partitions[i].p_size)
105 dl->d_partitions[i].p_offset += 63;
106 dl->d_magic = DISKMAGIC;
107 dl->d_magic2 = DISKMAGIC;
108 dl->d_checksum = dkcksum(dl);
110 for(i=0;i<BBSIZE/512;i++) {
111 write_block(fd,WHERE(i + c1->offset, new), buf + 512 * i, 512);
118 Write_Extended(int fd, struct disk *new, struct disk *old, struct chunk *c1)
123 #if defined(__i386__)
125 Write_Int32(u_int32_t *p, u_int32_t v)
127 u_int8_t *bp = (u_int8_t *)p;
128 bp[0] = (v >> 0) & 0xff;
129 bp[1] = (v >> 8) & 0xff;
130 bp[2] = (v >> 16) & 0xff;
131 bp[3] = (v >> 24) & 0xff;
135 #if defined(__i386__)
137 * Special install-time configuration for the i386 boot0 boot manager.
140 Cfg_Boot_Mgr(u_char *mbr, int edd)
142 if (mbr[0x1b0] == 0x66 && mbr[0x1b1] == 0xbb) {
144 mbr[0x1bb] |= 0x80; /* Packet mode on */
146 mbr[0x1bb] &= 0x7f; /* Packet mode off */
152 Write_Disk(struct disk *d1)
158 struct disk *old = 0;
163 struct dos_partition *dp,work[NDOSPART];
166 int need_edd = 0; /* Need EDD (packet interface) */
171 strcpy(device,_PATH_DEV);
172 strcat(device,d1->name);
174 fd = open(device,O_RDWR);
177 warn("open(%s) failed", device);
181 ioctl(fd, DIOCWLABEL, &one);
183 memset(s,0,sizeof s);
184 mbr = read_block(fd, WHERE(0, d1), d1->sector_size);
185 dp = (struct dos_partition*)(mbr + DOSPARTOFF);
186 memcpy(work, dp, sizeof work);
189 for (c1 = d1->chunks->part; c1; c1 = c1->next) {
190 if (c1->type == unused) continue;
191 if (!strcmp(c1->name, "X")) continue;
193 j = c1->name[4] - '1';
194 j = c1->name[strlen(d1->name) + 1] - '1';
199 if (c1->type == extended)
200 ret += Write_Extended(fd, d1, old, c1);
201 if (c1->type == freebsd)
202 ret += Write_FreeBSD(fd, d1, old, c1);
205 Write_Int32(&dp[j].dp_start, c1->offset);
206 Write_Int32(&dp[j].dp_size, c1->size);
209 if (i >= 1024*d1->bios_sect*d1->bios_hd) {
210 dp[j].dp_ssect = 0xff;
212 dp[j].dp_scyl = 0xff;
215 dp[j].dp_ssect = i % d1->bios_sect;
216 i -= dp[j].dp_ssect++;
218 dp[j].dp_shd = i % d1->bios_hd;
223 dp[j].dp_ssect |= i >> 2;
227 printf("S:%lu = (%x/%x/%x)",
228 c1->offset, dp[j].dp_scyl, dp[j].dp_shd, dp[j].dp_ssect);
232 dp[j].dp_esect = i % d1->bios_sect;
233 i -= dp[j].dp_esect++;
235 dp[j].dp_ehd = i % d1->bios_hd;
238 if (i>1023) i = 1023;
241 dp[j].dp_esect |= i >> 2;
244 printf(" E:%lu = (%x/%x/%x)\n",
245 c1->end, dp[j].dp_ecyl, dp[j].dp_ehd, dp[j].dp_esect);
248 dp[j].dp_typ = c1->subtype;
249 if (c1->flags & CHUNK_ACTIVE)
250 dp[j].dp_flag = 0x80;
257 for(i = 0; i < NDOSPART; i++) {
259 memset(dp + i, 0, sizeof *dp);
264 for(i = 0; i < NDOSPART; i++)
265 if (dp[i].dp_typ == 0xa5)
266 dp[i].dp_flag = 0x80;
268 mbr = read_block(fd, WHERE(0, d1), d1->sector_size);
270 memcpy(mbr, d1->bootmgr, DOSPARTOFF);
271 Cfg_Boot_Mgr(mbr, need_edd);
273 memcpy(mbr + DOSPARTOFF, dp, sizeof *dp * NDOSPART);
276 write_block(fd, WHERE(0, d1), mbr, d1->sector_size);
277 if (d1->bootmgr && d1->bootmgr_size > d1->sector_size)
278 for(i = 1; i * d1->sector_size <= d1->bootmgr_size; i++)
279 write_block(fd, WHERE(i, d1), &d1->bootmgr[i * d1->sector_size], d1->sector_size);
283 i = ioctl(fd, DIOCSYNCSLICEINFO, &i);
286 warn("ioctl(DIOCSYNCSLICEINFO)");
288 ioctl(fd, DIOCWLABEL, &zero);