1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 2000 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _DHCPTAB_H 28*0Sstevel@tonic-gate #define _DHCPTAB_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate /* 33*0Sstevel@tonic-gate * Implementation-specific data structures and constants for the binary 34*0Sstevel@tonic-gate * dhcptab container. These structures are subject to change at any time. 35*0Sstevel@tonic-gate */ 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #ifdef __cplusplus 38*0Sstevel@tonic-gate extern "C" { 39*0Sstevel@tonic-gate #endif 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate #include <sys/types.h> 42*0Sstevel@tonic-gate #include <dhcp_svc_public.h> 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate #define DT_NOREC 0 /* "no record" id value */ 45*0Sstevel@tonic-gate #define DT_MAGIC 0x0d6c94ab /* "dhcptab" in a hexadecimal world */ 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate /* 48*0Sstevel@tonic-gate * Constants for use with find_dt 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate #define FIND_PARTIAL 0x0001 /* allow partial success */ 51*0Sstevel@tonic-gate #define FIND_POSITION 0x0002 /* return dt_recpos_t's */ 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate /* 54*0Sstevel@tonic-gate * Header atop the dhcptab container -- contains some basic information 55*0Sstevel@tonic-gate * about the container for sanity-checking purposes. 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate typedef struct dt_header { 58*0Sstevel@tonic-gate unsigned char dth_version; /* container version */ 59*0Sstevel@tonic-gate unsigned char dth_align[3]; /* ensure binary compatibility */ 60*0Sstevel@tonic-gate uint32_t dth_magic; /* magic for sanity check */ 61*0Sstevel@tonic-gate uint32_t dth_pad[4]; /* for future use */ 62*0Sstevel@tonic-gate } dt_header_t; 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate /* 65*0Sstevel@tonic-gate * What each dt_rec_t looks like on-disk -- note that we cannot just write 66*0Sstevel@tonic-gate * dt_rec_t's because the `dt_value' field can be arbitrarily large. 67*0Sstevel@tonic-gate * Instead, write out the dt_rec_t structure followed by the variable-size 68*0Sstevel@tonic-gate * `rec_dtval' array which will contain the current value of `dt_value'. 69*0Sstevel@tonic-gate * Since `rec_dtval' is of variable size, we must explicitly keep track of 70*0Sstevel@tonic-gate * its length via `rec_dtvalsize'. 71*0Sstevel@tonic-gate */ 72*0Sstevel@tonic-gate typedef struct dt_filerec { 73*0Sstevel@tonic-gate dt_rec_t rec_dt; /* actual dt_rec_t */ 74*0Sstevel@tonic-gate uint32_t rec_dtvalsize; /* total size of rec_dtval */ 75*0Sstevel@tonic-gate char rec_dtval[1]; /* dt_value field from dt_rec_t */ 76*0Sstevel@tonic-gate } dt_filerec_t; 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate /* 79*0Sstevel@tonic-gate * Per-record state describing the underlying record, including its 80*0Sstevel@tonic-gate * position on-disk; these are returned instead of dt_rec_t's when find_dt 81*0Sstevel@tonic-gate * is called with FIND_POSITION set. Note that for this to work, the 82*0Sstevel@tonic-gate * dt_rec_t must be the first member. 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate typedef struct dt_recpos { 85*0Sstevel@tonic-gate dt_rec_t dtp_rec; /* traditional dt_rec_t */ 86*0Sstevel@tonic-gate size_t dtp_size; /* its size in the file */ 87*0Sstevel@tonic-gate off_t dtp_off; /* its starting offset in the file */ 88*0Sstevel@tonic-gate } dt_recpos_t; 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate /* 91*0Sstevel@tonic-gate * Per-instance state for each handle returned from open_dt 92*0Sstevel@tonic-gate */ 93*0Sstevel@tonic-gate typedef struct dt_handle { 94*0Sstevel@tonic-gate unsigned int dh_oflags; /* flags passed into open_dt */ 95*0Sstevel@tonic-gate char dh_location[MAXPATHLEN]; /* location of container */ 96*0Sstevel@tonic-gate } dt_handle_t; 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate #ifdef __cplusplus 99*0Sstevel@tonic-gate } 100*0Sstevel@tonic-gate #endif 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate #endif /* _DHCPTAB_H */ 103