/* $NetBSD: vndvar.h,v 1.39 2025/02/13 01:33:21 gutteridge Exp $ */ /*- * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$ * * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93 */ #ifndef _SYS_DEV_VNDVAR_H_ #define _SYS_DEV_VNDVAR_H_ #include <sys/ioccom.h> #include <sys/pool.h> /* * Vnode disk pseudo-geometry information. */ struct vndgeom { u_int32_t vng_secsize; /* # bytes per sector */ u_int32_t vng_nsectors; /* # data sectors per track */ u_int32_t vng_ntracks; /* # tracks per cylinder */ u_int32_t vng_ncylinders; /* # cylinders per unit */ }; /* * Ioctl definitions for file (vnode) disk pseudo-device. */ struct vnd_ioctl { char *vnd_file; /* pathname of file to mount */ int vnd_flags; /* flags; see below */ struct vndgeom vnd_geom; /* geometry to emulate */ unsigned int vnd_osize; /* (returned) size of disk */ uint64_t vnd_size; /* (returned) size of disk */ }; /* vnd_flags */ #define VNDIOF_HASGEOM 0x01 /* use specified geometry */ #define VNDIOF_READONLY 0x02 /* as read-only device */ #define VNDIOF_FORCE 0x04 /* force close */ #define VNDIOF_FILEIO 0x08 /* have to use read/write */ #define VNDIOF_COMP 0x0400 /* must stay the same as VNF_COMP */ #ifdef _KERNEL struct vnode; /* * A vnode disk's state information. */ struct vnd_softc { device_t sc_dev; int sc_flags; /* flags */ uint64_t sc_size; /* size of vnd */ struct vnode *sc_vp; /* vnode */ u_int sc_iosize; /* smallest I/O size for backend */ kauth_cred_t sc_cred; /* credentials */ int sc_maxactive; /* max # of active requests */ struct bufq_state *sc_tab; /* transfer queue */ int sc_pending; /* number of pending transfers */ int sc_active; /* number of active transfers */ struct disk sc_dkdev; /* generic disk device info */ struct vndgeom sc_geom; /* virtual geometry */ struct pool sc_vxpool; /* vndxfer pool */ struct pool sc_vbpool; /* vndbuf pool */ struct lwp *sc_kthread; /* kernel thread */ u_int32_t sc_comp_blksz; /* precompressed block size */ u_int32_t sc_comp_numoffs;/* count of compressed block offsets */ u_int64_t *sc_comp_offsets;/* file idx's to compressed blocks */ unsigned char *sc_comp_buff; /* compressed data buffer */ unsigned char *sc_comp_decombuf;/* decompressed data buffer */ int32_t sc_comp_buffblk;/*current decompressed block */ z_stream sc_comp_stream;/* decompress descriptor */ }; #endif /* sc_flags */ #define VNF_INITED 0x001 /* unit has been initialized */ #define VNF_WLABEL 0x002 /* label area is writable */ #define VNF_LABELLING 0x004 /* unit is currently being labelled */ #define VNF_WANTED 0x008 /* someone is waiting to obtain a lock */ #define VNF_LOCKED 0x010 /* unit is locked */ #define VNF_READONLY 0x020 /* unit is read-only */ #define VNF_KLABEL 0x040 /* keep label on close */ #define VNF_VLABEL 0x080 /* label is valid */ #define VNF_KTHREAD 0x100 /* thread is running */ #define VNF_VUNCONF 0x200 /* device is unconfiguring */ #define VNF_COMP 0x400 /* file is compressed */ #define VNF_CLEARING 0x800 /* unit is being torn down */ #define VNF_USE_VN_RDWR 0x1000 /* have to use vn_rdwr() */ /* structure of header in a compressed file */ struct vnd_comp_header { char preamble[128]; u_int32_t block_size; u_int32_t num_blocks; }; /* * A simple structure for describing which vnd units are in use. */ struct vnd_user { int vnu_unit; /* which vnd unit */ dev_t vnu_dev; /* file is on this device... */ ino_t vnu_ino; /* ...at this inode */ }; /* * Before you can use a unit, it must be configured with VNDIOCSET. * The configuration persists across opens and closes of the device; * a VNDIOCCLR must be used to reset a configuration. An attempt to * VNDIOCSET an already active unit will return EBUSY. */ #define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */ #define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */ #define VNDIOCGET _IOWR('F', 3, struct vnd_user) /* get list */ #ifdef _KERNEL /* * Everything else is kernel-private, mostly exported for compat/netbsd32. * * NetBSD 3.0 had a 32-bit value for vnu_ino. * * NetBSD 5.0 had a 32-bit value for vnu_dev, and vnd_size. */ struct vnd_user30 { int vnu_unit; /* which vnd unit */ uint32_t vnu_dev; /* file is on this device... */ uint32_t vnu_ino; /* ...at this inode */ }; #define VNDIOCGET30 _IOWR('F', 2, struct vnd_user30) /* get list */ struct vnd_user50 { int vnu_unit; /* which vnd unit */ uint32_t vnu_dev; /* file is on this device... */ ino_t vnu_ino; /* ...at this inode */ }; #define VNDIOCGET50 _IOWR('F', 3, struct vnd_user50) /* get list */ struct vnd_ioctl50 { char *vnd_file; /* pathname of file to mount */ int vnd_flags; /* flags; see below */ struct vndgeom vnd_geom; /* geometry to emulate */ unsigned int vnd_size; /* (returned) size of disk */ }; #define VNDIOCSET50 _IOWR('F', 0, struct vnd_ioctl50) #define VNDIOCCLR50 _IOW('F', 1, struct vnd_ioctl50) #endif /* _KERNEL */ #endif /* _SYS_DEV_VNDVAR_H_ */
