diff options
Diffstat (limited to 'lib/libdisk/write_alpha_disk.c')
-rw-r--r-- | lib/libdisk/write_alpha_disk.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/lib/libdisk/write_alpha_disk.c b/lib/libdisk/write_alpha_disk.c new file mode 100644 index 0000000..313aae4 --- /dev/null +++ b/lib/libdisk/write_alpha_disk.c @@ -0,0 +1,123 @@ +/* + * ---------------------------------------------------------------------------- + * "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 <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <sys/disklabel.h> +#include <sys/diskslice.h> +#include <sys/diskmbr.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 disk *old, const struct chunk *c1) +{ + struct disklabel *dl; + int i; + void *p; + u_char buf[BBSIZE]; + u_long *lp, sum; + + 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 + 512, new->boot1, BBSIZE-512); + + dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET); + Fill_Disklabel(dl, new, old, c1); + + /* + * Tell SRM where the bootstrap is. + */ + lp = (u_long *)buf; + lp[60] = 15; + lp[61] = 1; + lp[62] = 0; + + /* + * Generate the bootblock checksum for the SRM console. + */ + for (lp = (u_long *)buf, i = 0, sum = 0; i < 63; i++) + sum += lp[i]; + lp[63] = sum; + + 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; + struct disk *old = 0; + struct chunk *c1; + int ret = 0; + char device[64]; + u_char *mbr; + struct dos_partition *dp,work[NDOSPART]; + int s[4]; + int one = 1; + int zero = 0; + + strcpy(device,_PATH_DEV); + strcat(device,d1->name); + + + fd = open(device,O_RDWR); + if (fd < 0) { +#ifdef DEBUG + warn("open(%s) failed", device); +#endif + return 1; + } + ioctl(fd, DIOCWLABEL, &one); + + memset(s,0,sizeof s); + mbr = read_block(fd, 0, d1->sector_size); + dp = (struct dos_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; + if (c1->type == freebsd) + ret += Write_FreeBSD(fd, d1, old, c1); + + } + + i = 1; + i = ioctl(fd, DIOCSYNCSLICEINFO, &i); +#ifdef DEBUG + if (i != 0) + warn("ioctl(DIOCSYNCSLICEINFO)"); +#endif + ioctl(fd, DIOCWLABEL, &zero); + close(fd); + return 0; +} |