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Annotation of 43BSDReno/sys/hpdev/fdioctl.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 University of Utah.
                      3:  * Copyright (c) 1990 The Regents of the University of California.
                      4:  * All rights reserved.
                      5:  *
                      6:  * This code is derived from software contributed to Berkeley by
                      7:  * the Systems Programming Group of the University of Utah Computer
                      8:  * Science Department.
                      9:  *
                     10:  * Redistribution is only permitted until one year after the first shipment
                     11:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                     12:  * binary forms are permitted provided that: (1) source distributions retain
                     13:  * this entire copyright notice and comment, and (2) distributions including
                     14:  * binaries display the following acknowledgement:  This product includes
                     15:  * software developed by the University of California, Berkeley and its
                     16:  * contributors'' in the documentation or other materials provided with the
                     17:  * distribution and in all advertising materials mentioning features or use
                     18:  * of this software.  Neither the name of the University nor the names of
                     19:  * its contributors may be used to endorse or promote products derived from
                     20:  * this software without specific prior written permission.
                     21:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     22:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     23:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     24:  *
                     25:  * from: Utah $Hdr: fdioctl.h 1.1 89/11/20$
                     26:  *
                     27:  *     @(#)fdioctl.h   7.1 (Berkeley) 5/8/90
                     28:  */
                     29: 
                     30: /*
                     31:  * Ioctl definitions for file (vnode) disk pseudo-device.
                     32:  */
                     33: 
                     34: #define FDISKFILE      "/etc/fdisks"   /* default config file */
                     35: 
                     36: struct fd_ioctl {
                     37:        char    *fd_file;       /* pathname of file to mount */
                     38:        int     fd_size;        /* (returned) size of disk */
                     39: };
                     40: 
                     41: /*
                     42:  * Before you can use a unit, it must be configured with FDIOCSET.
                     43:  * The configuration persists across opens and closes of the device;
                     44:  * an FDIOCCLR must be used to reset a configuration.  An attempt to
                     45:  * FDIOCSET an already active unit will return EBUSY.
                     46:  */
                     47: #define FDIOCSET       _IOWR('F', 0, struct fd_ioctl)  /* enable disk */
                     48: #define FDIOCCLR       _IOW('F', 1, struct fd_ioctl)   /* disable disk */

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