diff options
Diffstat (limited to 'lib/libdisk/write_pc98_disk.c')
| -rw-r--r-- | lib/libdisk/write_pc98_disk.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/lib/libdisk/write_pc98_disk.c b/lib/libdisk/write_pc98_disk.c new file mode 100644 index 0000000..ca4688b --- /dev/null +++ b/lib/libdisk/write_pc98_disk.c @@ -0,0 +1,173 @@ +/* + * ---------------------------------------------------------------------------- + * "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 <err.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <sys/disklabel.h> +#include <sys/diskslice.h> +#include <sys/diskpc98.h> +#include <paths.h> +#include "libdisk.h" + +/* + * XXX: A lot of hardcoded 512s probably should be foo->sector_size; + * I'm not sure which, so I leave it like it worked before. --schweikh + */ +static int +Write_FreeBSD(int fd, const struct disk *new, const struct chunk *c1) +{ + struct disklabel *dl; + int i; + void *p; + u_char buf[BBSIZE]; + + for (i = 0; i < BBSIZE / 512; i++) { + p = read_block(fd, i + c1->offset, 512); + memcpy(buf + 512 * i, p, 512); + free(p); + } + if (new->boot1) + memcpy(buf, new->boot1, 512); + + if (new->boot2) + memcpy(buf + 512, new->boot2, BBSIZE - 512); + + dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET); + Fill_Disklabel(dl, new, c1); + + for (i = 0; i < BBSIZE / 512; i++) + write_block(fd, i + c1->offset, buf + 512 * i, 512); + + return 0; +} + + +int +Write_Disk(const struct disk *d1) +{ + int fd, i, j; + struct chunk *c1; + int ret = 0; + char device[64]; + u_char *mbr; + struct pc98_partition *dp, work[NDOSPART]; + int s[7]; + int PC98_EntireDisk = 0; + + strcpy(device, _PATH_DEV); + strcat(device, d1->name); + + /* XXX - for entire FreeBSD(98) */ + for (c1 = d1->chunks->part; c1; c1 = c1->next) { + if ((c1->type == freebsd) || (c1->offset == 0)) + device[9] = 0; + } + + fd = open(device, O_RDWR); + if (fd < 0) { +#ifdef DEBUG + warn("open(%s) failed", device); +#endif + return 1; + } + + memset(s, 0, sizeof s); + mbr = read_block(fd, 1, d1->sector_size); + dp = (struct pc98_partition *)(mbr + DOSPARTOFF); + memcpy(work, dp, sizeof work); + dp = work; + free(mbr); + for (c1 = d1->chunks->part; c1; c1 = c1->next) { + if (c1->type == unused) + continue; + if (!strcmp(c1->name, "X")) + continue; + j = c1->name[strlen(d1->name) + 1] - '1'; + if (j < 0 || j > 7) + continue; + s[j]++; + if (c1->type == freebsd) + ret += Write_FreeBSD(fd, d1, c1); + + i = c1->offset; + dp[j].dp_ssect = dp[j].dp_ipl_sct = i % d1->bios_sect; + i -= dp[j].dp_ssect; + i /= d1->bios_sect; + dp[j].dp_shd = dp[j].dp_ipl_head = i % d1->bios_hd; + i -= dp[j].dp_shd; + i /= d1->bios_hd; + dp[j].dp_scyl = dp[j].dp_ipl_cyl = i; +#ifdef DEBUG + printf("S:%lu = (%x/%x/%x)", c1->offset, + dp[j].dp_scyl, dp[j].dp_shd, dp[j].dp_ssect); +#endif + + i = c1->end; +#if 1 + dp[j].dp_esect = dp[j].dp_ehd = 0; + dp[j].dp_ecyl = i / (d1->bios_sect * d1->bios_hd); +#else + dp[j].dp_esect = i % d1->bios_sect; + i -= dp[j].dp_esect; + i /= d1->bios_sect; + dp[j].dp_ehd = i % d1->bios_hd; + i -= dp[j].dp_ehd; + i /= d1->bios_hd; + dp[j].dp_ecyl = i; +#endif +#ifdef DEBUG + printf(" E:%lu = (%x/%x/%x)\n", c1->end, + dp[j].dp_ecyl, dp[j].dp_ehd, dp[j].dp_esect); +#endif + + dp[j].dp_mid = c1->subtype & 0xff; + dp[j].dp_sid = c1->subtype >> 8; + if (c1->flags & CHUNK_ACTIVE) + dp[j].dp_mid |= 0x80; + + strncpy(dp[j].dp_name, c1->sname, 16); + } + j = 0; + for (i = 0; i < NDOSPART; i++) { + if (!s[i]) + memset(dp + i, 0, sizeof *dp); + } + + if (d1->bootipl) + write_block(fd, 0, d1->bootipl, d1->sector_size); + + mbr = read_block(fd, 1, d1->sector_size); + memcpy(mbr + DOSPARTOFF, dp, sizeof *dp * NDOSPART); + /* XXX - for entire FreeBSD(98) */ + for (c1 = d1->chunks->part; c1; c1 = c1->next) + if (((c1->type == freebsd) || (c1->type == fat)) + && (c1->offset == 0)) + PC98_EntireDisk = 1; + if (PC98_EntireDisk == 0) + write_block(fd, 1, mbr, d1->sector_size); + + if (d1->bootmenu) + for (i = 0; i * d1->sector_size < d1->bootmenu_size; i++) + write_block(fd, 2 + i, + &d1->bootmenu[i * d1->sector_size], + d1->sector_size); + + close(fd); + return 0; +} |
