1 /* $NetBSD: storage.h,v 1.3 2009/06/30 02:44:52 agc Exp $ */ 2 3 /* 4 * Copyright � 2006 Alistair Crooks. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote 15 * products derived from this software without specific prior written 16 * permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 24 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #ifndef STORAGE_H_ 31 #define STORAGE_H_ 32 33 #include "defs.h" 34 35 /* Length of a node address (an IEEE 802 address). */ 36 #define NB_UUID_NODE_LEN 6 37 38 /* 39 * See also: 40 * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt 41 * http://www.opengroup.org/onlinepubs/009629399/apdxa.htm 42 * 43 * A DCE 1.1 compatible source representation of UUIDs. 44 */ 45 typedef struct nbuuid_t { 46 uint32_t time_low; 47 uint16_t time_mid; 48 uint16_t time_hi_and_version; 49 uint8_t clock_seq_hi_and_reserved; 50 uint8_t clock_seq_low; 51 uint8_t node[NB_UUID_NODE_LEN]; 52 } nbuuid_t; 53 54 void nbuuid_create(nbuuid_t *, uint32_t *); 55 void nbuuid_to_string(nbuuid_t *, char **, uint32_t *); 56 57 enum { 58 DE_EXTENT, 59 DE_DEVICE 60 }; 61 62 /* a device can be made up of an extent or another device */ 63 typedef struct disc_de_t { 64 int32_t type; /* device or extent */ 65 uint64_t size; /* size of underlying extent or device */ 66 union { 67 struct disc_extent_t *xp; /* pointer to extent */ 68 struct disc_device_t *dp; /* pointer to device */ 69 } u; 70 } disc_de_t; 71 72 /* this struct describes an extent of storage */ 73 typedef struct disc_extent_t { 74 char *extent; /* extent name */ 75 char *dev; /* device associated with it */ 76 uint64_t sacred; /* offset of extent from start of dev */ 77 uint64_t len; /* size of extent */ 78 int fd; /* in-core file descriptor */ 79 int used; /* extent has been used in a device */ 80 } disc_extent_t; 81 82 DEFINE_ARRAY(extv_t, disc_extent_t); 83 84 /* this struct describes a device */ 85 typedef struct disc_device_t { 86 char *dev; /* device name */ 87 int raid; /* RAID level */ 88 uint64_t off; /* current offset in device */ 89 uint64_t len; /* size of device */ 90 uint32_t size; /* size of device/extent array */ 91 uint32_t c; /* # of entries in device/extents */ 92 disc_de_t *xv; /* device/extent array */ 93 int used; /* device has been used in a device/target */ 94 } disc_device_t; 95 96 DEFINE_ARRAY(devv_t, disc_device_t); 97 98 enum { 99 TARGET_READONLY = 0x01 100 }; 101 102 /* this struct describes an iscsi target's associated features */ 103 typedef struct disc_target_t { 104 char *target; /* target name */ 105 disc_de_t de; /* pointer to its device */ 106 uint16_t port; /* port to listen on */ 107 char *mask; /* mask to export it to */ 108 uint32_t flags; /* any flags */ 109 uint16_t tsih; /* target session identifying handle */ 110 char *iqn; /* assigned iqn - can be NULL */ 111 } disc_target_t; 112 113 DEFINE_ARRAY(targv_t, disc_target_t); 114 115 int read_conf_file(const char *, targv_t *, devv_t *, extv_t *); 116 117 #endif /* !STORAGE_H_ */ 118