1 /*- 2 * Copyright (c) 2012 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Edward Tomasz Napierala under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef ISCSID_H 33 #define ISCSID_H 34 35 #include <stdbool.h> 36 #include <stdint.h> 37 38 #include <iscsi_ioctl.h> 39 40 #define DEFAULT_PIDFILE "/var/run/iscsid.pid" 41 42 #define CONN_DIGEST_NONE 0 43 #define CONN_DIGEST_CRC32C 1 44 45 #define CONN_MUTUAL_CHALLENGE_LEN 1024 46 47 struct connection { 48 int conn_iscsi_fd; 49 int conn_socket; 50 unsigned int conn_session_id; 51 struct iscsi_session_conf conn_conf; 52 char conn_target_alias[ISCSI_ADDR_LEN]; 53 uint8_t conn_isid[6]; 54 uint32_t conn_statsn; 55 int conn_header_digest; 56 int conn_data_digest; 57 bool conn_initial_r2t; 58 bool conn_immediate_data; 59 size_t conn_max_data_segment_length; 60 size_t conn_max_burst_length; 61 size_t conn_first_burst_length; 62 char conn_mutual_challenge[CONN_MUTUAL_CHALLENGE_LEN]; 63 unsigned char conn_mutual_id; 64 }; 65 66 struct pdu { 67 struct connection *pdu_connection; 68 struct iscsi_bhs *pdu_bhs; 69 char *pdu_data; 70 size_t pdu_data_len; 71 }; 72 73 #define KEYS_MAX 1024 74 75 struct keys { 76 char *keys_names[KEYS_MAX]; 77 char *keys_values[KEYS_MAX]; 78 char *keys_data; 79 size_t keys_data_len; 80 }; 81 82 struct keys *keys_new(void); 83 void keys_delete(struct keys *key); 84 void keys_load(struct keys *keys, const struct pdu *pdu); 85 void keys_save(struct keys *keys, struct pdu *pdu); 86 const char *keys_find(struct keys *keys, const char *name); 87 int keys_find_int(struct keys *keys, const char *name); 88 void keys_add(struct keys *keys, 89 const char *name, const char *value); 90 void keys_add_int(struct keys *keys, 91 const char *name, int value); 92 93 struct pdu *pdu_new(struct connection *ic); 94 struct pdu *pdu_new_response(struct pdu *request); 95 void pdu_receive(struct pdu *request); 96 void pdu_send(struct pdu *response); 97 void pdu_delete(struct pdu *ip); 98 99 void login(struct connection *ic); 100 101 void discovery(struct connection *ic); 102 103 void log_init(int level); 104 void log_set_peer_name(const char *name); 105 void log_set_peer_addr(const char *addr); 106 void log_err(int, const char *, ...) 107 __dead2 __printflike(2, 3); 108 void log_errx(int, const char *, ...) 109 __dead2 __printflike(2, 3); 110 void log_warn(const char *, ...) __printflike(1, 2); 111 void log_warnx(const char *, ...) __printflike(1, 2); 112 void log_debugx(const char *, ...) __printflike(1, 2); 113 114 char *checked_strdup(const char *); 115 bool timed_out(void); 116 void fail(const struct connection *, const char *); 117 118 #endif /* !ISCSID_H */ 119