9732e4fd92
(sys/dev/iscsi_initiator/ instead of sys/dev/iscsi/initiator/), to make room for the new one. This is also more logical location (kernel module being named iscsi_initiator.ko, for example). There is no ongoing work on this I know of, so it shouldn't make life harder for anyone. There are no functional changes, apart from "svn mv" and adjusting paths.
177 lines
4.0 KiB
C
177 lines
4.0 KiB
C
/*-
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* Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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| $Id: pdu.c,v 2.2 2006/12/01 09:11:56 danny Exp danny $
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <camlib.h>
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#include <dev/iscsi_initiator/iscsi.h>
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#include "iscontrol.h"
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static void pukeText(char *it, pdu_t *pp);
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int
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xmitpdu(isess_t *sess, pdu_t *pp)
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{
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if(ioctl(sess->fd, ISCSISEND, pp)) {
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perror("xmitpdu");
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return -1;
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}
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if(vflag)
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pukeText("I-", pp);
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return 0;
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}
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int
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recvpdu(isess_t *sess, pdu_t *pp)
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{
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if(ioctl(sess->fd, ISCSIRECV, pp)) {
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perror("recvpdu");
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return -1;
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}
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// XXX: return error if truncated via
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// the FUDGE factor.
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if(vflag)
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pukeText("T-", pp);
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return 0;
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}
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int
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sendPDU(isess_t *sess, pdu_t *pp, handler_t *hdlr)
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{
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if(xmitpdu(sess, pp))
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return 0;
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if(hdlr) {
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int res;
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pp->ahs_size = 8 * 1024;
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if((pp->ahs_addr = malloc(pp->ahs_size)) == NULL) {
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fprintf(stderr, "out of mem!");
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return -1;
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}
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pp->ds_size = 0;
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if((res = recvpdu(sess, pp)) != 0) {
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fprintf(stderr, "recvpdu failed\n");
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return res;
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}
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res = hdlr(sess, pp);
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freePDU(pp);
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return res;
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}
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return 1;
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}
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#define FUDGE (512 * 8)
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/*
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| We use the same memory for the response
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| so make enough room ...
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| XXX: must find a better way.
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*/
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int
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addText(pdu_t *pp, char *fmt, ...)
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{
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u_int len;
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char *str;
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va_list ap;
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va_start(ap, fmt);
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len = vasprintf(&str, fmt, ap) + 1;
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if((pp->ds_len + len) > 0xffffff) {
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printf("ds overflow\n");
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free(str);
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return 0;
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}
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if((pp->ds_len + len) > pp->ds_size) {
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u_char *np;
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np = realloc(pp->ds_addr, pp->ds_size + len + FUDGE);
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if(np == NULL) {
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free(str);
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//XXX: out of memory!
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return -1;
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}
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pp->ds_addr = np;
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pp->ds_size += len + FUDGE;
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}
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memcpy(pp->ds_addr + pp->ds_len, str, len);
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pp->ds_len += len;
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free(str);
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return len;
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}
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void
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freePDU(pdu_t *pp)
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{
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if(pp->ahs_size)
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free(pp->ahs_addr);
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if(pp->ds_size)
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free(pp->ds_addr);
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bzero(&pp->ipdu, sizeof(union ipdu_u));
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pp->ahs_addr = NULL;
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pp->ds_addr = NULL;
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pp->ahs_size = 0;
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pp->ds_size = pp->ds_len = 0;
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}
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static void
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pukeText(char *it, pdu_t *pp)
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{
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char *ptr;
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int cmd;
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size_t len, n;
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len = pp->ds_len;
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ptr = (char *)pp->ds_addr;
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cmd = pp->ipdu.bhs.opcode;
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printf("%s: cmd=0x%x len=%d\n", it, cmd, (int)len);
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while(len > 0) {
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printf("\t%s\n", ptr);
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n = strlen(ptr) + 1;
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len -= n;
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ptr += n;
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}
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}
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