mirror of
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f9657fb6bf
there to support sysinstall, and enabling DEBUG creates spurious console output that can't be read anyway... This slightly cleans up the visual impression of the system install by not spamming the console during the labeling of the disks.
350 lines
8.7 KiB
C
350 lines
8.7 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> 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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* $FreeBSD$
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*
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*/
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/* #define DEBUG 1 */
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/* You can define a particular architecture here if you are debugging. */
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/* #define P_DEBUG p_sparc64 */
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#define MAX_NO_DISKS 32
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/* Max # of disks Disk_Names() will return */
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#define MAX_SEC_SIZE 2048 /* maximum sector size that is supported */
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#define MIN_SEC_SIZE 512 /* the sector size to end sensing at */
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enum platform {
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p_any, /* for debugging ! */
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p_alpha,
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p_i386,
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p_pc98,
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p_sparc64,
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p_ia64,
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p_ppc,
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p_amd64
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};
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extern const enum platform platform;
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typedef enum {
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whole,
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unknown,
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sun,
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pc98,
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mbr,
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gpt,
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efi,
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fat,
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freebsd,
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extended,
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part,
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spare,
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unused
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} chunk_e;
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__BEGIN_DECLS
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struct disk {
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char *name;
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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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#ifdef PC98
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u_char *bootipl;
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size_t bootipl_size;
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u_char *bootmenu;
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size_t bootmenu_size;
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#else
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#if !defined(__ia64__)
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u_char *bootmgr;
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size_t bootmgr_size;
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#endif
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#endif
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#if !defined(__ia64__)
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u_char *boot1;
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#endif
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#if defined(__i386__) || defined(__amd64__) /* the i386 needs extra help... */
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u_char *boot2;
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#endif
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struct chunk *chunks;
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u_long sector_size; /* media sector size, a power of 2 */
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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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struct disk *disk;
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long offset;
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u_long size;
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u_long end;
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char *sname; /* PC98 field */
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char *name;
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char *oname;
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/* Used during Fixup_Names() to avoid renaming more than
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* absolutely needed.
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*/
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chunk_e type;
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int subtype;
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u_long flags;
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void (*private_free)(void*);
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void *(*private_clone)(void*);
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void *private_data;
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/* For data private to the application, and the management
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* thereof. If the functions are not provided, no storage
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* management is done, Cloning will just copy the pointer
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* and freeing will just forget it.
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*/
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};
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/*
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* flags:
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*
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* ALIGN - This chunk should be aligned
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* IS_ROOT - This 'part' is a rootfs, allocate 'a'
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* ACTIVE - This is the active slice in the MBR
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* FORCE_ALL - Force a dedicated disk for FreeBSD, bypassing
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* all BIOS geometry considerations
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* AUTO_SIZE - This chunk was auto-sized and can fill-out a
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* following chunk if the following chunk is deleted.
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* NEWFS - newfs pending, used to enable auto-resizing on
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* delete (along with AUTO_SIZE).
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*/
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#define CHUNK_ALIGN 0x0008
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#define CHUNK_IS_ROOT 0x0010
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#define CHUNK_ACTIVE 0x0020
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#define CHUNK_FORCE_ALL 0x0040
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#define CHUNK_AUTO_SIZE 0x0080
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#define CHUNK_NEWFS 0x0100
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#define DELCHUNK_NORMAL 0x0000
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#define DELCHUNK_RECOVER 0x0001
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const char *chunk_name(chunk_e);
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const char *
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slice_type_name(int, int);
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/* "chunk_n" for subtypes too */
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struct disk *
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Open_Disk(const char *);
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/* Will open the named disk, and return populated tree. */
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void
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Free_Disk(struct disk *);
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/* Free a tree made with Open_Disk() or Clone_Disk() */
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void
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Debug_Disk(struct disk *);
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/* Print the content of the tree to stdout */
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void
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Set_Bios_Geom(struct disk *, u_long, u_long, u_long);
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/* Set the geometry the bios uses. */
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void
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Sanitize_Bios_Geom(struct disk *);
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/* Set the bios geometry to something sane */
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int
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Insert_Chunk(struct chunk *, u_long, u_long, const char *, chunk_e, int,
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u_long, const char *);
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int
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Delete_Chunk2(struct disk *, struct chunk *, int);
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/* Free a chunk of disk_space modified by the passed flags. */
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int
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Delete_Chunk(struct disk *, struct chunk *);
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/* Free a chunk of disk_space */
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void
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Collapse_Disk(struct disk *);
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/* Experimental, do not use. */
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int
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Collapse_Chunk(struct disk *, struct chunk *);
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/* Experimental, do not use. */
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int
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Create_Chunk(struct disk *, u_long, u_long, chunk_e, int, u_long, const char *);
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/* Create a chunk with the specified paramters */
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void
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All_FreeBSD(struct disk *, int);
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/*
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* Make one FreeBSD chunk covering the entire disk;
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* if force_all is set, bypass all BIOS geometry
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* considerations.
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*/
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char *
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CheckRules(const struct disk *);
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/* Return char* to warnings about broken design rules in this disklayout */
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char **
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Disk_Names(void);
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/*
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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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#ifdef PC98
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void
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Set_Boot_Mgr(struct disk *, const u_char *, const size_t, const u_char *,
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const size_t);
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#else
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void
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Set_Boot_Mgr(struct disk *, const u_char *, const size_t);
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#endif
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/*
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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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int
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Set_Boot_Blocks(struct disk *, const u_char *, const u_char *);
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/*
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* Use these boot-blocks on this disk. Gets written when Write_Disk()
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* is called. Returns nonzero upon failure.
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*/
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int
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Write_Disk(const struct disk *);
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/* Write all the MBRs, disklabels, bootblocks and boot managers */
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u_long
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Next_Cyl_Aligned(const struct disk *, u_long);
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/* Round offset up to next cylinder according to the bios-geometry */
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u_long
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Prev_Cyl_Aligned(const struct disk *, u_long);
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/* Round offset down to previous cylinder according to the bios-geometry */
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int
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Track_Aligned(const struct disk *, u_long);
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/* Check if offset is aligned on a track according to the bios geometry */
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u_long
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Next_Track_Aligned(const struct disk *, u_long);
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/* Round offset up to next track according to the bios-geometry */
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u_long
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Prev_Track_Aligned(const struct disk *, u_long);
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/* Check if offset is aligned on a track according to the bios geometry */
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struct chunk *
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Create_Chunk_DWIM(struct disk *, struct chunk *, u_long, chunk_e, int,
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u_long);
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/*
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* This one creates a partition inside the given parent of the given
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* size, and returns a pointer to it. The first unused chunk big
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* enough is used.
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*/
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char *
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ShowChunkFlags(struct chunk *);
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/* Return string to show flags. */
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/*
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* Implementation details >>> DO NOT USE <<<
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*/
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struct disklabel;
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void Fill_Disklabel(struct disklabel *, const struct disk *,
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const struct chunk *);
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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(const struct chunk *);
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int Add_Chunk(struct disk *, long, u_long, const char *, chunk_e, int, u_long,
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const char *);
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void *read_block(int, daddr_t, u_long);
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int write_block(int, daddr_t, const void *, u_long);
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struct disklabel *read_disklabel(int, daddr_t, u_long);
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struct disk *Int_Open_Disk(const char *);
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int Fixup_Names(struct disk *);
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int MakeDevChunk(const struct chunk *, const char *);
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__END_DECLS
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#define dprintf printf
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/* TODO
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*
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* Need an 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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* 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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* don't rename slices unless we have to
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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 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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* >>>>>> 0x3d2c0 960120 63 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> --> <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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