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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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* For further information regarding this notice, see:
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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#define BBMAP_SIZE (XFS_MAX_BLOCKSIZE / BBSIZE)
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typedef struct bbmap {
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__int64_t b[BBMAP_SIZE];
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typedef struct iocur {
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__int64_t bb; /* BB number in filesystem of buf */
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int blen; /* length of "buf", bb's */
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int boff; /* data - buf */
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void *buf; /* base address of buffer */
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void *data; /* current interesting data */
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xfs_ino_t dirino; /* current directory inode number */
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xfs_ino_t ino; /* current inode number */
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int len; /* length of "data", bytes */
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__uint16_t mode; /* current inode's mode */
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xfs_off_t off; /* fs offset of "data" in bytes */
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const struct typ *typ; /* type of "data" */
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int use_bbmap; /* set if bbmap is valid */
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bbmap_t bbmap; /* map daddr if fragmented */
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#define DB_RING_ADD 1 /* add to ring on set_cur */
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#define DB_RING_IGN 0 /* do not add to ring on set_cur */
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extern iocur_t *iocur_base; /* base of stack */
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extern iocur_t *iocur_top; /* top element of stack */
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extern int iocur_sp; /* current top of stack */
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extern int iocur_len; /* length of stack array */
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extern void io_init(void);
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extern void off_cur(int off, int len);
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extern void pop_cur(void);
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extern void print_iocur(char *tag, iocur_t *ioc);
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extern void push_cur(void);
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extern int read_bbs(__int64_t daddr, int count, void **bufp,
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extern int write_bbs(__int64_t daddr, int count, void *bufp,
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extern void write_cur(void);
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extern void set_cur(const struct typ *t, __int64_t d, int c, int ring_add,
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extern void ring_add(void);