113 lines
4.2 KiB
C
113 lines
4.2 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)stand.h 8.1 (Berkeley) 6/11/93
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* $Id: stand.h,v 1.1 1994/01/26 02:03:58 brezak Exp $
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*/
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include "saioctl.h"
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#include "saerrno.h"
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#ifndef NULL
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#define NULL 0
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#endif
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struct open_file;
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/*
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* This structure is used to define file system operations in a file system
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* independent way.
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*/
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struct fs_ops {
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int (*open) __P((char *path, struct open_file *f));
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int (*close) __P((struct open_file *f));
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int (*read) __P((struct open_file *f, char *buf,
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u_int size, u_int *resid));
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int (*write) __P((struct open_file *f, char *buf,
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u_int size, u_int *resid));
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off_t (*seek) __P((struct open_file *f, off_t offset, int where));
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int (*stat) __P((struct open_file *f, struct stat *sb));
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};
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extern struct fs_ops file_system[];
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/* where values for lseek(2) */
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#define SEEK_SET 0 /* set file offset to offset */
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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/* Device switch */
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struct devsw {
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char *dv_name;
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int (*dv_strategy) __P((void *devdata, int rw,
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daddr_t blk, u_int size, char *buf, u_int *rsize));
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int (*dv_open) __P((struct open_file *f, ...));
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int (*dv_close) __P((struct open_file *f));
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int (*dv_ioctl) __P((struct open_file *f, int cmd, void *data));
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};
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extern struct devsw devsw[]; /* device array */
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extern int ndevs; /* number of elements in devsw[] */
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struct open_file {
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int f_flags; /* see F_* below */
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struct devsw *f_dev; /* pointer to device operations */
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void *f_devdata; /* device specific data */
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struct fs_ops *f_ops; /* pointer to file system operations */
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void *f_fsdata; /* file system specific data */
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};
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#define SOPEN_MAX 4
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extern struct open_file files[SOPEN_MAX];
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/* f_flags values */
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#define F_READ 0x0001 /* file opened for reading */
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#define F_WRITE 0x0002 /* file opened for writing */
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#define F_RAW 0x0004 /* raw device open - no file system */
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#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
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#define tolower(c) ((c) - 'A' + 'a')
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#define isspace(c) ((c) == ' ' || (c) == '\t')
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#define isdigit(c) ((c) >= '0' && (c) <= '9')
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int devopen __P((struct open_file *f, char *fname, char **file));
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void *alloc __P((unsigned size));
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void free __P((void *ptr, unsigned size));
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struct disklabel;
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char *getdisklabel __P((const char *buf, struct disklabel *lp));
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int nodev(), noioctl();
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void nullsys();
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