diff options
Diffstat (limited to 'lib/libdisk/rules.c')
-rw-r--r-- | lib/libdisk/rules.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/lib/libdisk/rules.c b/lib/libdisk/rules.c deleted file mode 100644 index 1ea9ca85b162..000000000000 --- a/lib/libdisk/rules.c +++ /dev/null @@ -1,316 +0,0 @@ -/* - * ---------------------------------------------------------------------------- - * "THE BEER-WARE LICENSE" (Revision 42): - * <phk@login.dknet.dk> 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 - * ---------------------------------------------------------------------------- - * - * $Id: rules.c,v 1.10.2.1 1995/06/03 08:40:33 jkh Exp $ - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <sys/types.h> -#include <sys/diskslice.h> -#include <sys/disklabel.h> -#include <err.h> -#include "libdisk.h" - -int -Track_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect) - return 1; - if (offset % d->bios_sect) - return 0; - return 1; -} - -u_long -Prev_Track_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect) - return offset; - return (offset / d->bios_sect) * d->bios_sect; -} - -u_long -Next_Track_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect) - return offset; - return Prev_Track_Aligned(d,offset + d->bios_sect-1); -} - -int -Cyl_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect || !d->bios_hd) - return 1; - if (offset % (d->bios_sect * d->bios_hd)) - return 0; - return 1; -} - -u_long -Prev_Cyl_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect || !d->bios_hd) - return offset; - return (offset / (d->bios_sect*d->bios_hd)) * d->bios_sect * d->bios_hd; -} - -u_long -Next_Cyl_Aligned(struct disk *d, u_long offset) -{ - if (!d->bios_sect || !d->bios_hd) - return offset; - return Prev_Cyl_Aligned(d,offset + (d->bios_sect * d->bios_hd)-1); -} - -/* - * Rule#0: - * Chunks of type 'whole' can have max NDOSPART children. - * Only one of them can have the "active" flag - */ -void -Rule_000(struct disk *d, struct chunk *c, char *msg) -{ - int i=0,j=0; - struct chunk *c1; - - if (c->type != whole) - return; - for (c1=c->part; c1; c1=c1->next) { - if (c1->type != unused) continue; - if (c1->flags & CHUNK_ACTIVE) - j++; - i++; - } - if (i > NDOSPART) - sprintf(msg+strlen(msg), - "%d is too many children of the 'whole' chunk. Max is %d\n", - i, NDOSPART); - if (j > 1) - sprintf(msg+strlen(msg), - "Too many active children of 'whole'"); -} - -/* - * Rule#1: - * All children of 'whole' and 'extended' must be track-aligned. - * Exception: the end can be unaligned if it matches the end of 'whole' - */ -void -Rule_001(struct disk *d, struct chunk *c, char *msg) -{ - int i; - struct chunk *c1; - - if (c->type != whole && c->type != extended) - return; - for (i=0, c1=c->part; c1; c1=c1->next) { - if (c1->type == unused) continue; - c1->flags |= CHUNK_ALIGN; - if (!Track_Aligned(d,c1->offset)) - sprintf(msg+strlen(msg), - "chunk '%s' [%ld..%ld] does not start on a track boundary\n", - c1->name,c1->offset,c1->end); - if ((c->type == whole || c->end == c1->end) - || Cyl_Aligned(d,c1->end+1)) - ; - else - sprintf(msg+strlen(msg), - "chunk '%s' [%ld..%ld] does not end on a cylinder boundary\n", - c1->name,c1->offset,c1->end); - } -} - -/* - * Rule#2: - * Max one 'fat' as child of 'whole' - */ -void -Rule_002(struct disk *d, struct chunk *c, char *msg) -{ - int i; - struct chunk *c1; - - if (c->type != whole) - return; - for (i=0, c1=c->part; c1; c1=c1->next) { - if (c1->type != fat) - continue; - i++; - } - if (i > 1) { - sprintf(msg+strlen(msg), - "Max one 'fat' allowed as child of 'whole'\n"); - } -} - -/* - * Rule#3: - * Max one extended as child of 'whole' - */ -void -Rule_003(struct disk *d, struct chunk *c, char *msg) -{ - int i; - struct chunk *c1; - - if (c->type != whole) - return; - for (i=0, c1=c->part; c1; c1=c1->next) { - if (c1->type != extended) - continue; - i++; - } - if (i > 1) { - sprintf(msg+strlen(msg), - "Max one 'extended' allowed as child of 'whole'\n"); - } -} - -/* - * Rule#4: - * Max seven 'part' as children of 'freebsd' - * Max one CHUNK_IS_ROOT child per 'freebsd' - * If Bad144, space for table must exist. - * If Bad144 & root, bad144 table must be inside 1024 - */ -void -Rule_004(struct disk *d, struct chunk *c, char *msg) -{ - int i=0,k=0; - struct chunk *c1; - u_long l; - - if (c->type != freebsd) - return; - - if (c->flags & CHUNK_BAD144) { - l = c->end - 127 - d->bios_sect + 1; - for (c1=c->part; c1; c1=c1->next) { - if (c1->end < l || c1->type == unused) - continue; - sprintf(msg+strlen(msg), - "Blocks %lu to %lu are needed for bad144 information, but isn't unused.\n", - l, c->end); - break; - } - if (c->flags & CHUNK_PAST_1024) { - for (c1=c->part; c1; c1=c1->next) { - if (c1->flags & CHUNK_IS_ROOT) { - sprintf(msg+strlen(msg), - "You have assigned root to a slice which uses bad144, and\n extends past the first 1023 cylinders, and thus cannot be booted from.\n"); - break; - } - } - } - } - - for (c1=c->part; c1; c1=c1->next) { - if (c1->type != part) - continue; - if (c1->flags & CHUNK_IS_ROOT) { - k++; - if (c1->flags & CHUNK_PAST_1024) - sprintf(msg+strlen(msg), - "Root filesystem extends past cylinder 1024, and cannot be booted from\n"); - } - i++; - } - if (i > 7) { - sprintf(msg+strlen(msg), - "Max seven partitions per freebsd slice\n"); - } - if (k > 1) { - sprintf(msg+strlen(msg), - "Max one root partition child per freebsd slice\n"); - } -} - -void -Check_Chunk(struct disk *d, struct chunk *c, char *msg) -{ - Rule_000(d,c,msg); - Rule_001(d,c,msg); - Rule_002(d,c,msg); - Rule_003(d,c,msg); - Rule_004(d,c,msg); - if (c->part) - Check_Chunk(d,c->part,msg); - if (c->next) - Check_Chunk(d,c->next,msg); - - if (c->end >= 1024*d->bios_hd*d->bios_sect) - c->flags |= CHUNK_PAST_1024; - else - c->flags &= ~CHUNK_PAST_1024; -} - -char * -CheckRules(struct disk *d) -{ - char msg[BUFSIZ]; - - *msg = '\0'; - Check_Chunk(d,d->chunks,msg); - if (*msg) - return strdup(msg); - return 0; -} - -char * -ChunkCanBeRoot(struct chunk *c) -{ - struct chunk *c1; - struct disk *d = c->disk; - char msg[BUFSIZ]; - - *msg = '\0'; - if (c->flags & CHUNK_PAST_1024) { - strcat(msg, -"The root partition must end before cylinder 1024 seen from\n"); - strcat(msg, -"the BIOS' point of view, or it cannot be booted from.\n"); - return strdup(msg); - } - for (c1=d->chunks->part;;) { - for (; c1; c1=c1->next) - if (c1->offset <= c->offset && c1->end >= c->end) - break; - if (!c1) { - strcat(msg, -"Internal trouble, cannot find this chunk in the chunk-tree\n"); - return strdup(msg); - } - if (c1->type == freebsd) - break; - c1 = c1->part; - } - - if (c1->type != freebsd) { - strcat(msg, -"The root partition must be in a FreeBSD slice, otherwise\n"); - strcat(msg, -"the kernel cannot be booted from it\n"); - return strdup(msg); - } - - if ((c1->flags & CHUNK_BAD144) && (c1->flags & CHUNK_PAST_1024)) { - strcat(msg, -"This partition is unsuitable for root, because the FreeBSD slice\n"); - strcat(msg, -"it is inside has bad144 enabled, but the badblock data lives past\n"); - strcat(msg, -"the 1024th cylinder, and the bootblocks cannot get to it there.\n"); - return strdup(msg); - } - return NULL; -} |