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Diffstat (limited to 'qemu/roms/openbios/fs/grubfs/fsys_ffs.c')
-rw-r--r--qemu/roms/openbios/fs/grubfs/fsys_ffs.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/qemu/roms/openbios/fs/grubfs/fsys_ffs.c b/qemu/roms/openbios/fs/grubfs/fsys_ffs.c
deleted file mode 100644
index c6804b8ba..000000000
--- a/qemu/roms/openbios/fs/grubfs/fsys_ffs.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 2000, 2001 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- * MA 02110-1301, USA.
- */
-
-/*
- * Elements of this file were originally from the FreeBSD "biosboot"
- * bootloader file "disk.c" dated 4/12/95.
- *
- * The license and header comments from that file are included here.
- */
-
-/*
- * Mach Operating System
- * Copyright (c) 1992, 1991 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- *
- * from: Mach, Revision 2.2 92/04/04 11:35:49 rpd
- * $Id: fsys_ffs.c,v 1.10 2001/11/12 06:57:29 okuji Exp $
- */
-
-#ifdef FSYS_FFS
-
-#include "shared.h"
-
-#include "filesys.h"
-
-#include "defs.h"
-#include "disk_inode.h"
-#include "disk_inode_ffs.h"
-#include "dir.h"
-#include "fs.h"
-
-/* used for filesystem map blocks */
-static int mapblock;
-static int mapblock_offset;
-static int mapblock_bsize;
-
-/* pointer to superblock */
-#define SUPERBLOCK ((struct fs *) ( FSYS_BUF + 8192 ))
-#define INODE ((struct icommon *) ( FSYS_BUF + 16384 ))
-#define MAPBUF ( FSYS_BUF + 24576 )
-#define MAPBUF_LEN 8192
-
-
-int
-ffs_mount (void)
-{
- int retval = 1;
-
- if ((((current_drive & 0x80) || (current_slice != 0))
- && ! IS_PC_SLICE_TYPE_BSD_WITH_FS (current_slice, FS_BSDFFS))
- || part_length < (SBLOCK + (SBSIZE / DEV_BSIZE))
- || !devread (SBLOCK, 0, SBSIZE, (char *) SUPERBLOCK)
- || SUPERBLOCK->fs_magic != FS_MAGIC)
- retval = 0;
-
- mapblock = -1;
- mapblock_offset = -1;
-
- return retval;
-}
-
-static int
-block_map (int file_block)
-{
- int bnum, offset, bsize;
-
- if (file_block < NDADDR)
- return (INODE->i_db[file_block]);
-
- /* If the blockmap loaded does not include FILE_BLOCK,
- load a new blockmap. */
- if ((bnum = fsbtodb (SUPERBLOCK, INODE->i_ib[0])) != mapblock
- || (mapblock_offset <= bnum && bnum <= mapblock_offset + mapblock_bsize))
- {
- if (MAPBUF_LEN < SUPERBLOCK->fs_bsize)
- {
- offset = ((file_block - NDADDR) % NINDIR (SUPERBLOCK));
- bsize = MAPBUF_LEN;
-
- if (offset + MAPBUF_LEN > SUPERBLOCK->fs_bsize)
- offset = (SUPERBLOCK->fs_bsize - MAPBUF_LEN) / sizeof (int);
- }
- else
- {
- bsize = SUPERBLOCK->fs_bsize;
- offset = 0;
- }
-
- if (! devread (bnum, offset * sizeof (int), bsize, (char *) MAPBUF))
- {
- mapblock = -1;
- mapblock_bsize = -1;
- mapblock_offset = -1;
- errnum = ERR_FSYS_CORRUPT;
- return -1;
- }
-
- mapblock = bnum;
- mapblock_bsize = bsize;
- mapblock_offset = offset;
- }
-
- return (((int *) MAPBUF)[((file_block - NDADDR) % NINDIR (SUPERBLOCK))
- - mapblock_offset]);
-}
-
-
-int
-ffs_read (char *buf, int len)
-{
- int logno, off, size, map, ret = 0;
-
- while (len && !errnum)
- {
- off = blkoff (SUPERBLOCK, filepos);
- logno = lblkno (SUPERBLOCK, filepos);
- size = blksize (SUPERBLOCK, INODE, logno);
-
- if ((map = block_map (logno)) < 0)
- break;
-
- size -= off;
-
- if (size > len)
- size = len;
-
- disk_read_func = disk_read_hook;
-
- devread (fsbtodb (SUPERBLOCK, map), off, size, buf);
-
- disk_read_func = NULL;
-
- buf += size;
- len -= size;
- filepos += size;
- ret += size;
- }
-
- if (errnum)
- ret = 0;
-
- return ret;
-}
-
-
-int
-ffs_dir (char *dirname)
-{
- char *rest, ch;
- int block, off, loc, map, ino = ROOTINO;
- struct direct *dp;
-
-/* main loop to find destination inode */
-loop:
-
- /* load current inode (defaults to the root inode) */
-
- if (!devread (fsbtodb (SUPERBLOCK, itod (SUPERBLOCK, ino)),
- ino % (SUPERBLOCK->fs_inopb) * sizeof (struct dinode),
- sizeof (struct dinode), (char *) INODE))
- return 0; /* XXX what return value? */
-
- /* if we have a real file (and we're not just printing possibilities),
- then this is where we want to exit */
-
- if (!*dirname || isspace (*dirname))
- {
- if ((INODE->i_mode & IFMT) != IFREG)
- {
- errnum = ERR_BAD_FILETYPE;
- return 0;
- }
-
- filemax = INODE->i_size;
-
- /* incomplete implementation requires this! */
- fsmax = (NDADDR + NINDIR (SUPERBLOCK)) * SUPERBLOCK->fs_bsize;
- return 1;
- }
-
- /* continue with file/directory name interpretation */
-
- while (*dirname == '/')
- dirname++;
-
- if (!(INODE->i_size) || ((INODE->i_mode & IFMT) != IFDIR))
- {
- errnum = ERR_BAD_FILETYPE;
- return 0;
- }
-
- for (rest = dirname; (ch = *rest) && !isspace (ch) && ch != '/'; rest++);
-
- *rest = 0;
- loc = 0;
-
- /* loop for reading a the entries in a directory */
-
- do
- {
- if (loc >= INODE->i_size)
- {
-#if 0
- putchar ('\n');
-#endif
-
- if (print_possibilities < 0)
- return 1;
-
- errnum = ERR_FILE_NOT_FOUND;
- *rest = ch;
- return 0;
- }
-
- if (!(off = blkoff (SUPERBLOCK, loc)))
- {
- block = lblkno (SUPERBLOCK, loc);
-
- if ((map = block_map (block)) < 0
- || !devread (fsbtodb (SUPERBLOCK, map), 0,
- blksize (SUPERBLOCK, INODE, block),
- (char *) FSYS_BUF))
- {
- errnum = ERR_FSYS_CORRUPT;
- *rest = ch;
- return 0;
- }
- }
-
- dp = (struct direct *) (FSYS_BUF + off);
- loc += dp->d_reclen;
-
-#ifndef STAGE1_5
- if (dp->d_ino && print_possibilities && ch != '/'
- && (!*dirname || substring (dirname, dp->d_name) <= 0))
- {
- if (print_possibilities > 0)
- print_possibilities = -print_possibilities;
-
- print_a_completion (dp->d_name);
- }
-#endif /* STAGE1_5 */
- }
- while (!dp->d_ino || (substring (dirname, dp->d_name) != 0
- || (print_possibilities && ch != '/')));
-
- /* only get here if we have a matching directory entry */
-
- ino = dp->d_ino;
- *(dirname = rest) = ch;
-
- /* go back to main loop at top of function */
- goto loop;
-}
-
-int
-ffs_embed (int *start_sector, int needed_sectors)
-{
- /* XXX: I don't know if this is really correct. Someone who is
- familiar with BSD should check for this. */
- if (needed_sectors > 14)
- return 0;
-
- *start_sector = 1;
-#if 1
- /* FIXME: Disable the embedding in FFS until someone checks if
- the code above is correct. */
- return 0;
-#else
- return 1;
-#endif
-}
-
-#endif /* FSYS_FFS */