53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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*/
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#ifndef __FILE_DOT_H__
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#define __FILE_DOT_H__
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int gfs2_jdata_get_buffer(struct gfs2_inode *ip, uint64_t block, int new,
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struct buffer_head **bhp);
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typedef int (*read_copy_fn_t) (struct buffer_head *bh, char **buf,
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unsigned int offset, unsigned int size);
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typedef int (*write_copy_fn_t) (struct gfs2_inode *ip,
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struct buffer_head *bh, const char **buf,
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unsigned int offset, unsigned int size);
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int gfs2_copy2mem(struct buffer_head *bh, char **buf,
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unsigned int offset, unsigned int size);
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int gfs2_copy2user(struct buffer_head *bh, char __user **buf,
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unsigned int offset, unsigned int size);
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int gfs2_jdata_read(struct gfs2_inode *ip, char __user *buf,
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uint64_t offset, unsigned int size,
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read_copy_fn_t copy_fn);
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int gfs2_copy_from_mem(struct gfs2_inode *ip,
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struct buffer_head *bh, const char **buf,
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unsigned int offset, unsigned int size);
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int gfs2_copy_from_user(struct gfs2_inode *ip,
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struct buffer_head *bh, const char __user **buf,
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unsigned int offset, unsigned int size);
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int gfs2_jdata_write(struct gfs2_inode *ip, const char __user *buf,
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uint64_t offset, unsigned int size,
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write_copy_fn_t copy_fn);
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static inline int gfs2_jdata_read_mem(struct gfs2_inode *ip, char *buf,
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uint64_t offset, unsigned int size)
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{
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return gfs2_jdata_read(ip, (__force char __user *)buf, offset, size, gfs2_copy2mem);
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}
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static inline int gfs2_jdata_write_mem(struct gfs2_inode *ip, const char *buf,
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uint64_t offset, unsigned int size)
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{
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return gfs2_jdata_write(ip, (__force const char __user *)buf, offset, size, gfs2_copy_from_mem);
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}
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#endif /* __FILE_DOT_H__ */
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