iSCSI Initiatior daemon using vscsi(4).

Currently implements the absolute minimum of the protocol to make
it work against targets. Many things still in flux but we're annoyed
to work outside of the tree.  Commited from a source tree on an iSCSI
disk served via iscsid but it is not yet production ready.
OK dlg@, matthew@, deraadt@

1 files changed, 143 insertions, 0 deletions

diff --git a/usr.sbin/iscsid/util.c b/usr.sbin/iscsid/util.c
new file mode 100644
index 00000000000..8e1242efbd4
--- /dev/null
+++ b/usr.sbin/iscsid/util.c
@@ -0,0 +1,143 @@
+/*	$OpenBSD: util.c,v 1.1 2010/09/24 09:43:19 claudio Exp $ */
+
+/*
+ * Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+
+#include <scsi/iscsi.h>
+
+#include <errno.h>
+#include <event.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <unistd.h>
+
+#include "iscsid.h"
+#include "log.h"
+
+struct pdu *
+pdu_new(void)
+{
+	struct pdu *p;
+
+	if (!(p = calloc(1, sizeof(*p))))
+		return NULL;
+	return p;
+}
+
+void *
+pdu_alloc(size_t len)
+{
+	return malloc(PDU_LEN(len));
+}
+
+void *
+pdu_dup(void *data, size_t len)
+{
+	void *p;
+
+	if ((p = malloc(PDU_LEN(len))))
+		bcopy(data, p, len);
+	return p;
+}
+
+int
+pdu_addbuf(struct pdu *p, void *buf, size_t len, unsigned int elm)
+{
+	if (len & 0x3) {
+		bzero((char *)buf + len, 4 - (len & 0x3));
+		len += 4 - (len & 0x3);
+	}
+
+	if (elm < PDU_MAXIOV)
+		if (!p->iov[elm].iov_base) {
+			p->iov[elm].iov_base = buf;
+			p->iov[elm].iov_len = len;
+			return 0;
+		}
+
+	/* no space left */
+	return -1;
+}
+
+void *
+pdu_getbuf(struct pdu *p, size_t *len, unsigned int elm)
+{
+	if (len)
+		*len = 0;
+	if (elm < PDU_MAXIOV)
+		if (p->iov[elm].iov_base) {
+			if (len)
+				*len = p->iov[elm].iov_len;
+			return p->iov[elm].iov_base;
+		}
+
+	return NULL;
+}
+
+void
+pdu_free(struct pdu *p)
+{
+	unsigned int j;
+
+	for (j = 0; j < PDU_MAXIOV; j++)
+		free(p->iov[j].iov_base);
+	free(p);
+}
+
+int
+socket_setblockmode(int fd, int nonblocking)
+{
+	int     flags;
+
+	if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
+		return -1;
+
+	if (nonblocking)
+		flags |= O_NONBLOCK;
+	else
+		flags &= ~O_NONBLOCK;     
+
+	if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
+		return -1;
+	return 0;
+}
+
+const char *
+log_sockaddr(void *arg)
+{
+	struct sockaddr *sa = arg;
+	char port[6];
+	char host[NI_MAXHOST];
+	static char buf[NI_MAXHOST + 8];
+
+	if (getnameinfo(sa, sa->sa_len, host, sizeof(host), port, sizeof(port),
+	    NI_NUMERICHOST))
+		return "unknown";
+	if (port[0] == '0')
+		strlcpy(buf, host, sizeof(buf));
+	else if (sa->sa_family == AF_INET)
+		snprintf(buf, sizeof(buf), "%s:%s", host, port);
+	else
+		snprintf(buf, sizeof(buf), "[%s]:%s", host, port);
+	return buf;
+}