70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
#ifndef _CONF_H
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#define _CONF_H
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/*
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* Copyright (c) 1986 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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struct uio;
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struct buf;
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struct tty;
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struct devspec {
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int unit;
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char *devname;
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};
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/*
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* Declaration of block device
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* switch. Each entry (row) is
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* the only link between the
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* main unix code and the driver.
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* The initialization of the
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* device switches is in the
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* file conf.c.
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*/
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struct bdevsw
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{
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int (*d_open) (dev_t, int, int);
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int (*d_close) (dev_t, int, int);
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void (*d_strategy) (struct buf*);
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void (*d_root) (caddr_t); /* root attach routine */
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daddr_t (*d_psize) (dev_t); /* query partition size */
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int (*d_ioctl) (dev_t, u_int, caddr_t, int);
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int d_flags; /* tape flag */
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const struct devspec *devs;
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};
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/*
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* Character device switch.
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*/
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struct cdevsw
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{
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int (*d_open) (dev_t, int, int);
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int (*d_close) (dev_t, int, int);
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int (*d_read) (dev_t, struct uio*, int);
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int (*d_write) (dev_t, struct uio*, int);
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int (*d_ioctl) (dev_t, u_int, caddr_t, int);
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int (*d_stop) (struct tty*, int);
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struct tty *d_ttys;
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int (*d_select) (dev_t, int);
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void (*d_strategy) (struct buf*);
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char (*r_read) (dev_t);
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void (*r_write) (dev_t, char);
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const struct devspec *devs;
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};
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#ifdef KERNEL
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extern const struct bdevsw bdevsw[];
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extern const struct cdevsw cdevsw[];
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extern int nulldev();
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extern int norw(dev_t dev, struct uio *uio, int flag);
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extern int noioctl(dev_t dev, u_int cmd, caddr_t data, int flag);
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extern void noroot(caddr_t csr);
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int rawrw (dev_t dev, struct uio *uio, int flag);
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#endif
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#endif
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