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9781a14091
Add mbr and bteasy17 to tst01 read partitions from kernel instead of disk. Still problems with writing labels, discussing with Bruce. Extended slices doesn't get written yet.
271 lines
7.1 KiB
C
271 lines
7.1 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $Id: libdisk.h,v 1.6 1995/04/30 06:09:27 phk Exp $
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*
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*/
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#define MAX_NO_DISKS 20
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/* Max # of disks Disk_Names() will return */
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typedef enum {whole, foo, fat, freebsd, extended, part, unused, reserved} chunk_e;
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#define CHAR_N static char *chunk_n[] = { \
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"whole","foo","fat","freebsd","extended","part","unused","reserved",0};
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struct disk {
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char *name;
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u_long flags;
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# define DISK_ON_TRACK 1
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u_long real_cyl;
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u_long real_hd;
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u_long real_sect;
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u_long bios_cyl;
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u_long bios_hd;
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u_long bios_sect;
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u_char *bootmgr;
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u_char *boot1;
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u_char *boot2;
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struct chunk *chunks;
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};
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struct chunk {
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struct chunk *next;
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struct chunk *part;
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u_long offset;
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u_long size;
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u_long end;
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char *name;
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chunk_e type;
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int subtype;
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u_long flags;
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# define CHUNK_PAST_1024 1
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/* this chunk cannot be booted from */
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# define CHUNK_BSD_COMPAT 2
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/* this chunk is in the BSD-compatibility, and has a
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* short name too, ie wd0s4f -> wd0f
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*/
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# define CHUNK_BAD144 4
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/* this chunk has bad144 mapping */
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# define CHUNK_ALIGN 8
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};
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struct disk *
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Open_Disk(char *devname);
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/* Will open the named disk, and return populated tree.
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*/
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struct disk *
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Clone_Disk(struct disk *disk);
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/* Clone a copy of a tree. Useful for "Undo" functionality
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*/
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void
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Free_Disk(struct disk *disk);
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/* Free a tree made with Open_Disk() or Clone_Disk()
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*/
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void
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Debug_Disk(struct disk *disk);
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/* Print the content of the tree to stdout
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*/
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struct disk *
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Set_Phys_Geom(struct disk *disk, u_long cyl, u_long heads, u_long sects);
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/* Use a different physical geometry. Makes sense for ST506 disks only.
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* The tree returned is read from the disk, using this geometry.
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*/
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void
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Set_Bios_Geom(struct disk *disk, u_long cyl, u_long heads, u_long sects);
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/* Set the geometry the bios uses.
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*/
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int
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Delete_Chunk(struct disk *disk, struct chunk *);
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/* Free a chunk of disk_space
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*/
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void
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Collapse_Disk(struct disk *disk);
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/* Experimental, do not use.
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*/
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int
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Collapse_Chunk(struct disk *disk, struct chunk *chunk);
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/* Experimental, do not use.
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*/
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int
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Create_Chunk(struct disk *disk, u_long offset, u_long size, chunk_e type, int subtype, u_long flags);
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/* Create a chunk with the specified paramters
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*/
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void
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All_FreeBSD(struct disk *d);
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/* Make one FreeBSD chunk covering the entire disk
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*/
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char *
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CheckRules(struct disk *);
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/* Return char* to warnings about broken design rules in this disklayout
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*/
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char **
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Disk_Names();
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/* Return char** with all disk's names (wd0, wd1 ...). You must free
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* each pointer, as well as the array by hand
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*/
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void
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Set_Boot_Mgr(struct disk *d, u_char *bootmgr);
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/* Use this boot-manager on this disk. Gets written when Write_Disk()
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* is called
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*/
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void
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Set_Boot_Blocks(struct disk *d, u_char *boot1, u_char *boot2);
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/* Use these boot-blocks on this disk. Gets written when Write_Disk()
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* is called
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*/
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int
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Write_Disk(struct disk *d);
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/* Write all the MBRs, disklabels, bootblocks and boot managers
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*/
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int
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Cyl_Aligned(struct disk *d, u_long offset);
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/* Check if offset is aligned on a cylinder according to the
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* bios geometry
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*/
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u_long
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Next_Cyl_Aligned(struct disk *d, u_long offset);
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/* Round offset up to next cylinder according to the bios-geometry
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*/
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u_long
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Prev_Cyl_Aligned(struct disk *d, u_long offset);
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/* Round offset down to previous cylinder according to the bios-
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* geometry
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*/
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int
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Track_Aligned(struct disk *d, u_long offset);
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/* Check if offset is aligned on a track according to the
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* bios geometry
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*/
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u_long
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Next_Track_Aligned(struct disk *d, u_long offset);
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/* Round offset up to next track according to the bios-geometry
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*/
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u_long
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Prev_Track_Aligned(struct disk *d, u_long offset);
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/* Check if offset is aligned on a track according to the
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* bios geometry
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*/
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/*
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* Implementation details >>> DO NOT USE <<<
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*/
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void Debug_Chunk(struct chunk *);
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void Free_Chunk(struct chunk *);
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struct chunk * Clone_Chunk(struct chunk *);
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int Add_Chunk(struct disk *, u_long , u_long , char *, chunk_e, int , u_long);
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void Bios_Limit_Chunk(struct chunk *, u_long);
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void * read_block(int, daddr_t );
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void write_block(int fd, daddr_t block, void *foo);
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struct disklabel * read_disklabel(int, daddr_t);
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u_short dkcksum(struct disklabel *);
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struct chunk * Find_Mother_Chunk(struct chunk *, u_long , u_long , chunk_e);
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struct disk * Int_Open_Disk(char *name, u_long size);
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void Fixup_Names(struct disk *);
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#define dprintf printf
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/* TODO
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*
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* Need a error string mechanism from the functions instead of warn()
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*
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* Make sure only FreeBSD start at offset==0
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*
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* Make sure all MBR+extended children are aligned at create.
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*
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* Collapse must align.
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*
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* Make Write_Disk(struct disk*)
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*
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* Consider booting from OnTrack'ed disks.
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*
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* Get Bios-geom, ST506 & OnTrack from driver (or otherwise)
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*
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* Make Create_DWIM().
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*
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* Make Is_Unchanged(struct disk *d1, struct chunk *c1)
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*
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* Make Set_Active_Slice()
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*
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*Sample output from tst01:
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*
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* Debug_Disk(wd0) flags=0 real_geom=0/0/0 bios_geom=0/0/0
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* >> 0x3d040 0 1411200 1411199 wd0 0 whole 0 0
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* >>>> 0x3d080 0 960120 960119 wd0s1 3 freebsd 0 8
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* >>>>>> 0x3d100 0 40960 40959 wd0s1a 5 part 0 0
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* >>>>>> 0x3d180 40960 131072 172031 wd0s1b 5 part 0 0
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* >>>>>> 0x3d1c0 172032 409600 581631 wd0s1e 5 part 0 0
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* >>>>>> 0x3d200 581632 378488 960119 wd0s1f 5 part 0 0
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* >>>> 0x3d140 960120 5670 965789 wd0s2 4 extended 0 8
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* >>>>>> 0x3d240 960120 1 960120 - 7 reserved 0 8
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* >>>>>> 0x3d2c0 960121 62 960182 - 6 unused 0 0
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* >>>>>> 0x3d0c0 960183 5607 965789 wd0s5 2 fat 0 8
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* >>>> 0x3d280 965790 1890 967679 wd0s3 1 foo -2 8
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* >>>> 0x3d300 967680 443520 1411199 wd0s4 3 freebsd 0 8
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* >>>>>> 0x3d340 967680 443520 1411199 wd0s4a 5 part 0 0
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*
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* ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
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* level chunkptr start size end name type subtype flags
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*
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* Underlying data structure:
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*
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* Legend:
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* <struct chunk> --> part
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* |
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* v next
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*
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* <wd0> --> <wd0s1> --> <wd0s1a>
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* | |
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* | v
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* | <wd0s1b>
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* | |
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* | v
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* | <wd0s1e>
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* | |
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* | v
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* | <wd0s1f>
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* |
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* v
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* <wd0s2> --> <reserved>
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* | |
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* | v
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* | <unused>
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* | |
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* | v
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* | <wd0s5>
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* |
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* v
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* <wd0s3>
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* |
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* v
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* <wd0s4> --> <wd0s4a>
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*
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*
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*/
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