1171568Sscottl/*- 2211095Sdes * Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il> 3171568Sscottl * All rights reserved. 4171568Sscottl * 5171568Sscottl * Redistribution and use in source and binary forms, with or without 6171568Sscottl * modification, are permitted provided that the following conditions 7171568Sscottl * are met: 8171568Sscottl * 1. Redistributions of source code must retain the above copyright 9171568Sscottl * notice, this list of conditions and the following disclaimer. 10171568Sscottl * 2. Redistributions in binary form must reproduce the above copyright 11171568Sscottl * notice, this list of conditions and the following disclaimer in the 12171568Sscottl * documentation and/or other materials provided with the distribution. 13171568Sscottl * 14171568Sscottl * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15171568Sscottl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16171568Sscottl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17171568Sscottl * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18171568Sscottl * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19171568Sscottl * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20171568Sscottl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21171568Sscottl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22171568Sscottl * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23171568Sscottl * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24171568Sscottl * SUCH DAMAGE. 25171568Sscottl * 26171568Sscottl */ 27171568Sscottl/* 28171568Sscottl | $Id: pdu.c,v 2.2 2006/12/01 09:11:56 danny Exp danny $ 29171568Sscottl */ 30171568Sscottl 31171568Sscottl#include <sys/cdefs.h> 32171568Sscottl__FBSDID("$FreeBSD$"); 33171568Sscottl 34171568Sscottl#include <sys/types.h> 35171568Sscottl#include <sys/time.h> 36171568Sscottl#include <sys/uio.h> 37171568Sscottl#include <sys/ioctl.h> 38171568Sscottl#include <unistd.h> 39171568Sscottl#include <stdlib.h> 40171568Sscottl#include <string.h> 41171568Sscottl#include <errno.h> 42171568Sscottl#include <stdio.h> 43171568Sscottl#include <stdarg.h> 44171568Sscottl#include <camlib.h> 45171568Sscottl 46211095Sdes#include <dev/iscsi/initiator/iscsi.h> 47171568Sscottl#include "iscontrol.h" 48171568Sscottl 49203460Sdelphijstatic void pukeText(char *it, pdu_t *pp); 50203460Sdelphij 51171568Sscottlint 52171568Sscottlxmitpdu(isess_t *sess, pdu_t *pp) 53171568Sscottl{ 54171568Sscottl if(ioctl(sess->fd, ISCSISEND, pp)) { 55171568Sscottl perror("xmitpdu"); 56171568Sscottl return -1; 57171568Sscottl } 58171568Sscottl if(vflag) 59171568Sscottl pukeText("I-", pp); 60171568Sscottl 61171568Sscottl return 0; 62171568Sscottl} 63171568Sscottl 64171568Sscottlint 65171568Sscottlrecvpdu(isess_t *sess, pdu_t *pp) 66171568Sscottl{ 67171568Sscottl if(ioctl(sess->fd, ISCSIRECV, pp)) { 68171568Sscottl perror("recvpdu"); 69171568Sscottl return -1; 70171568Sscottl } 71171568Sscottl // XXX: return error if truncated via 72171568Sscottl // the FUDGE factor. 73171568Sscottl if(vflag) 74171568Sscottl pukeText("T-", pp); 75171568Sscottl 76171568Sscottl return 0; 77171568Sscottl} 78171568Sscottl 79171568Sscottlint 80171568SscottlsendPDU(isess_t *sess, pdu_t *pp, handler_t *hdlr) 81171568Sscottl{ 82171568Sscottl if(xmitpdu(sess, pp)) 83171568Sscottl return 0; 84171568Sscottl if(hdlr) { 85171568Sscottl int res; 86171568Sscottl 87171568Sscottl pp->ahs_size = 8 * 1024; 88211095Sdes if((pp->ahs_addr = malloc(pp->ahs_size)) == NULL) { 89171568Sscottl fprintf(stderr, "out of mem!"); 90171568Sscottl return -1; 91171568Sscottl } 92171568Sscottl pp->ds_size = 0; 93171568Sscottl if((res = recvpdu(sess, pp)) != 0) { 94171568Sscottl fprintf(stderr, "recvpdu failed\n"); 95171568Sscottl return res; 96171568Sscottl } 97171568Sscottl res = hdlr(sess, pp); 98171568Sscottl freePDU(pp); 99171568Sscottl return res; 100171568Sscottl } 101171568Sscottl return 1; 102171568Sscottl} 103171568Sscottl 104171568Sscottl 105171568Sscottl#define FUDGE (512 * 8) 106171568Sscottl/* 107171568Sscottl | We use the same memory for the response 108171568Sscottl | so make enough room ... 109171568Sscottl | XXX: must find a better way. 110171568Sscottl */ 111171568Sscottlint 112171568SscottladdText(pdu_t *pp, char *fmt, ...) 113171568Sscottl{ 114171568Sscottl u_int len; 115171568Sscottl char *str; 116171568Sscottl va_list ap; 117171568Sscottl 118171568Sscottl va_start(ap, fmt); 119171568Sscottl len = vasprintf(&str, fmt, ap) + 1; 120171568Sscottl if((pp->ds_len + len) > 0xffffff) { 121171568Sscottl printf("ds overflow\n"); 122171568Sscottl free(str); 123171568Sscottl return 0; 124171568Sscottl } 125171568Sscottl 126171568Sscottl if((pp->ds_len + len) > pp->ds_size) { 127171568Sscottl u_char *np; 128171568Sscottl 129211095Sdes np = realloc(pp->ds_addr, pp->ds_size + len + FUDGE); 130171568Sscottl if(np == NULL) { 131171568Sscottl free(str); 132171568Sscottl //XXX: out of memory! 133171568Sscottl return -1; 134171568Sscottl } 135211095Sdes pp->ds_addr = np; 136171568Sscottl pp->ds_size += len + FUDGE; 137171568Sscottl } 138211095Sdes memcpy(pp->ds_addr + pp->ds_len, str, len); 139171568Sscottl pp->ds_len += len; 140171568Sscottl free(str); 141171568Sscottl return len; 142171568Sscottl} 143171568Sscottl 144171568Sscottlvoid 145171568SscottlfreePDU(pdu_t *pp) 146171568Sscottl{ 147171568Sscottl if(pp->ahs_size) 148211095Sdes free(pp->ahs_addr); 149171568Sscottl if(pp->ds_size) 150211095Sdes free(pp->ds_addr); 151171568Sscottl bzero(&pp->ipdu, sizeof(union ipdu_u)); 152211095Sdes pp->ahs_addr = NULL; 153211095Sdes pp->ds_addr = NULL; 154171568Sscottl pp->ahs_size = 0; 155171568Sscottl pp->ds_size = pp->ds_len = 0; 156171568Sscottl} 157171568Sscottl 158203460Sdelphijstatic void 159171568SscottlpukeText(char *it, pdu_t *pp) 160171568Sscottl{ 161171568Sscottl char *ptr; 162171568Sscottl int cmd; 163171568Sscottl size_t len, n; 164171568Sscottl 165171568Sscottl len = pp->ds_len; 166211095Sdes ptr = (char *)pp->ds_addr; 167171568Sscottl cmd = pp->ipdu.bhs.opcode; 168171568Sscottl 169171568Sscottl printf("%s: cmd=0x%x len=%d\n", it, cmd, (int)len); 170171568Sscottl while(len > 0) { 171171568Sscottl printf("\t%s\n", ptr); 172171568Sscottl n = strlen(ptr) + 1; 173171568Sscottl len -= n; 174171568Sscottl ptr += n; 175171568Sscottl } 176171568Sscottl} 177