From 0ffc27529d2c7ca6ee9effc3d7b9992202957586 Mon Sep 17 00:00:00 2001 From: phk Date: Sun, 30 Apr 1995 22:51:05 +0000 Subject: Use the DIOCSYNCSLICE ioctl now. (use only with kernel from this morning). Get the CHS's right. Get the disklabels (more) right. --- lib/libdisk/write_disk.c | 60 ++++++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 28 deletions(-) (limited to 'lib/libdisk/write_disk.c') diff --git a/lib/libdisk/write_disk.c b/lib/libdisk/write_disk.c index d4d1c8a..c97727c 100644 --- a/lib/libdisk/write_disk.c +++ b/lib/libdisk/write_disk.c @@ -6,7 +6,7 @@ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- * - * $Id: write_disk.c,v 1.3 1995/04/30 07:30:45 phk Exp $ + * $Id: write_disk.c,v 1.4 1995/04/30 11:04:16 phk Exp $ * */ @@ -63,7 +63,7 @@ Write_FreeBSD(int fd, struct disk *new, struct disk *old, struct chunk *c1) continue; } dl->d_partitions[j].p_size = c2->size; - dl->d_partitions[j].p_offset = c2->offset - c1->offset; + dl->d_partitions[j].p_offset = c2->offset; dl->d_partitions[j].p_fstype = c2->subtype; } @@ -83,7 +83,7 @@ Write_FreeBSD(int fd, struct disk *new, struct disk *old, struct chunk *c1) dl->d_type = new->name[0] == 's' ? DTYPE_SCSI : DTYPE_ESDI; dl->d_partitions[RAW_PART].p_size = c1->size; - dl->d_partitions[RAW_PART].p_offset = 0; + dl->d_partitions[RAW_PART].p_offset = c1->offset; dl->d_magic = DISKMAGIC; dl->d_magic2 = DISKMAGIC; @@ -112,7 +112,7 @@ Write_Disk(struct disk *d1) int ret = 0; char device[64]; u_char *mbr; - struct dos_partition *dp; + struct dos_partition *dp,work[NDOSPART]; int s[4]; strcpy(device,"/dev/r"); @@ -127,18 +127,22 @@ Write_Disk(struct disk *d1) memset(s,0,sizeof s); mbr = read_block(fd,0); 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 (c1->type == reserved) continue; if (!strcmp(c1->name,"X")) continue; - if (c1->type == extended) - ret += Write_Extended(fd, d1,old,c1); - if (c1->type == freebsd) - ret += Write_FreeBSD(fd, d1,old,c1); j = c1->name[4] - '1'; if (j < 0 || j > 3) continue; s[j]++; + if (c1->type == extended) + ret += Write_Extended(fd, d1,old,c1); + if (c1->type == freebsd) + ret += Write_FreeBSD(fd, d1,old,c1); + dp[j].dp_start = c1->offset; dp[j].dp_size = c1->size; @@ -150,14 +154,17 @@ Write_Disk(struct disk *d1) } else { dp[j].dp_ssect = i % d1->bios_sect; - i -= dp[j].dp_ssect; + i -= dp[j].dp_ssect++; i /= d1->bios_sect; - dp[j].dp_ssect++; dp[j].dp_shd = i % d1->bios_hd; i -= dp[j].dp_shd; i /= d1->bios_hd; dp[j].dp_scyl = i; + i -= dp[j].dp_scyl; + dp[j].dp_ssect |= i >> 2; } + printf("S:%lu = (%x/%x/%x)", + c1->offset,dp[j].dp_scyl,dp[j].dp_shd,dp[j].dp_ssect); i = c1->end; if (i >= 1024*d1->bios_sect*d1->bios_hd) { @@ -166,40 +173,37 @@ Write_Disk(struct disk *d1) dp[j].dp_ecyl = 0xff; } else { dp[j].dp_esect = i % d1->bios_sect; - i -= dp[j].dp_esect; + i -= dp[j].dp_esect++; i /= d1->bios_sect; - dp[j].dp_esect++; dp[j].dp_ehd = i % d1->bios_hd; i -= dp[j].dp_ehd; i /= d1->bios_hd; dp[j].dp_ecyl = i; + i -= dp[j].dp_ecyl; + dp[j].dp_esect |= i >> 2; + } + printf(" E:%lu = (%x/%x/%x)\n", + c1->end,dp[j].dp_ecyl,dp[j].dp_ehd,dp[j].dp_esect); - switch (c1->type) { - case freebsd: - dp[j].dp_typ = 0xa5; - break; - case fat: - dp[j].dp_typ = 1; - break; - case extended: - dp[j].dp_typ = 5; - break; - case foo: - dp[j].dp_typ = - c1->subtype; - break; - default: - break; - } + dp[j].dp_typ = c1->subtype; } for(i=0;ibootmgr) + memcpy(mbr,d1->bootmgr,DOSPARTOFF); + memcpy(mbr+DOSPARTOFF,dp,sizeof *dp * NDOSPART); mbr[512-2] = 0x55; mbr[512-1] = 0xaa; write_block(fd,WHERE(0,d1),mbr); + i = 1; + i = ioctl(fd,DIOCSYNCSLICEINFO,&i); + if (i != 0) + warn("ioctl(DIOCSYNCSLICEINFO)"); close(fd); return 0; } -- cgit v1.1