diff options
Diffstat (limited to 'sys/gnu/ext2fs/ext2_subr.c')
| -rw-r--r-- | sys/gnu/ext2fs/ext2_subr.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/sys/gnu/ext2fs/ext2_subr.c b/sys/gnu/ext2fs/ext2_subr.c deleted file mode 100644 index 166e147..0000000 --- a/sys/gnu/ext2fs/ext2_subr.c +++ /dev/null @@ -1,120 +0,0 @@ -/*- - * modified for Lites 1.1 - * - * Aug 1995, Godmar Back (gback@cs.utah.edu) - * University of Utah, Department of Computer Science - */ -/*- - * Copyright (c) 1982, 1986, 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93 - * $FreeBSD$ - */ - -#include <sys/param.h> - -#include <sys/proc.h> -#include <sys/systm.h> -#include <sys/bio.h> -#include <sys/buf.h> -#include <sys/lock.h> -#include <sys/ucred.h> -#include <sys/vnode.h> - -#include <gnu/ext2fs/inode.h> -#include <gnu/ext2fs/ext2_extern.h> -#include <gnu/ext2fs/ext2_fs_sb.h> -#include <gnu/ext2fs/fs.h> - -#ifdef KDB -void ext2_checkoverlap(struct buf *, struct inode *); -#endif - -/* - * Return buffer with the contents of block "offset" from the beginning of - * directory "ip". If "res" is non-zero, fill it in with a pointer to the - * remaining space in the directory. - */ -int -ext2_blkatoff(vp, offset, res, bpp) - struct vnode *vp; - off_t offset; - char **res; - struct buf **bpp; -{ - struct inode *ip; - struct ext2_sb_info *fs; - struct buf *bp; - int32_t lbn; - int bsize, error; - - ip = VTOI(vp); - fs = ip->i_e2fs; - lbn = lblkno(fs, offset); - bsize = blksize(fs, ip, lbn); - - *bpp = NULL; - if ((error = bread(vp, lbn, bsize, NOCRED, &bp)) != 0) { - brelse(bp); - return (error); - } - if (res) - *res = (char *)bp->b_data + blkoff(fs, offset); - *bpp = bp; - return (0); -} - -#ifdef KDB -void -ext2_checkoverlap(bp, ip) - struct buf *bp; - struct inode *ip; -{ - struct buf *ebp, *ep; - int32_t start, last; - struct vnode *vp; - - ebp = &buf[nbuf]; - start = bp->b_blkno; - last = start + btodb(bp->b_bcount) - 1; - for (ep = buf; ep < ebp; ep++) { - if (ep == bp || (ep->b_flags & B_INVAL)) - continue; - vp = ip->i_devvp; - /* look for overlap */ - if (ep->b_bcount == 0 || ep->b_blkno > last || - ep->b_blkno + btodb(ep->b_bcount) <= start) - continue; - vprint("Disk overlap", vp); - (void)printf("\tstart %d, end %d overlap start %lld, end %ld\n", - start, last, (long long)ep->b_blkno, - (long)(ep->b_blkno + btodb(ep->b_bcount) - 1)); - panic("Disk buffer overlap"); - } -} -#endif /* KDB */ |
