GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/iscsid/util.c Lines: 0 70 0.0 %
Date: 2017-11-13 Branches: 0 51 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: util.c,v 1.8 2016/08/16 18:41:57 tedu Exp $ */
2
3
/*
4
 * Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org>
5
 *
6
 * Permission to use, copy, modify, and distribute this software for any
7
 * purpose with or without fee is hereby granted, provided that the above
8
 * copyright notice and this permission notice appear in all copies.
9
 *
10
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
 */
18
19
#include <sys/queue.h>
20
#include <sys/socket.h>
21
#include <sys/uio.h>
22
23
#include <scsi/iscsi.h>
24
25
#include <errno.h>
26
#include <event.h>
27
#include <fcntl.h>
28
#include <netdb.h>
29
#include <stdio.h>
30
#include <stdlib.h>
31
#include <string.h>
32
#include <unistd.h>
33
34
#include "iscsid.h"
35
#include "log.h"
36
37
struct pdu *
38
pdu_new(void)
39
{
40
	struct pdu *p;
41
42
	if (!(p = calloc(1, sizeof(*p))))
43
		return NULL;
44
	return p;
45
}
46
47
void *
48
pdu_alloc(size_t len)
49
{
50
	return malloc(PDU_LEN(len));
51
}
52
53
void *
54
pdu_dup(void *data, size_t len)
55
{
56
	void *p;
57
58
	if ((p = malloc(PDU_LEN(len))))
59
		memcpy(p, data, len);
60
	return p;
61
}
62
63
int
64
pdu_addbuf(struct pdu *p, void *buf, size_t len, unsigned int elm)
65
{
66
	if (len & 0x3) {
67
		bzero((char *)buf + len, 4 - (len & 0x3));
68
		len += 4 - (len & 0x3);
69
	}
70
71
	if (elm < PDU_MAXIOV)
72
		if (!p->iov[elm].iov_base) {
73
			p->iov[elm].iov_base = buf;
74
			p->iov[elm].iov_len = len;
75
			return 0;
76
		}
77
78
	/* no space left */
79
	return -1;
80
}
81
82
void *
83
pdu_getbuf(struct pdu *p, size_t *len, unsigned int elm)
84
{
85
	if (len)
86
		*len = 0;
87
	if (elm < PDU_MAXIOV)
88
		if (p->iov[elm].iov_base) {
89
			if (len)
90
				*len = p->iov[elm].iov_len;
91
			return p->iov[elm].iov_base;
92
		}
93
94
	return NULL;
95
}
96
97
void
98
pdu_free(struct pdu *p)
99
{
100
	unsigned int j;
101
102
	for (j = 0; j < PDU_MAXIOV; j++)
103
		free(p->iov[j].iov_base);
104
	free(p);
105
}
106
107
int
108
socket_setblockmode(int fd, int nonblocking)
109
{
110
	int     flags;
111
112
	if ((flags = fcntl(fd, F_GETFL)) == -1)
113
		return -1;
114
115
	if (nonblocking)
116
		flags |= O_NONBLOCK;
117
	else
118
		flags &= ~O_NONBLOCK;
119
120
	if ((flags = fcntl(fd, F_SETFL, flags)) == -1)
121
		return -1;
122
	return 0;
123
}
124
125
const char *
126
log_sockaddr(void *arg)
127
{
128
	struct sockaddr *sa = arg;
129
	char port[6];
130
	char host[NI_MAXHOST];
131
	static char buf[NI_MAXHOST + 8];
132
133
	if (getnameinfo(sa, sa->sa_len, host, sizeof(host), port, sizeof(port),
134
	    NI_NUMERICHOST))
135
		return "unknown";
136
	if (port[0] == '0')
137
		strlcpy(buf, host, sizeof(buf));
138
	else if (sa->sa_family == AF_INET)
139
		snprintf(buf, sizeof(buf), "%s:%s", host, port);
140
	else
141
		snprintf(buf, sizeof(buf), "[%s]:%s", host, port);
142
	return buf;
143
}
144
145
int
146
control_compose(void *ch, u_int16_t type, void *buf, size_t len)
147
{
148
	return control_build(ch, type, 1, CTRLARGV({ buf, len }));
149
}
150
151
int
152
control_build(void *ch, u_int16_t type, int argc, struct ctrldata *argv)
153
{
154
	struct pdu *pdu;
155
	struct ctrlmsghdr *cmh;
156
	size_t size = 0;
157
	int i;
158
159
	if (argc > (int)nitems(cmh->len))
160
		return -1;
161
162
	for (i = 0; i < argc; i++)
163
		size += argv[i].len;
164
	if (PDU_LEN(size) > CONTROL_READ_SIZE - PDU_LEN(sizeof(*cmh)))
165
		return -1;
166
167
	if ((pdu = pdu_new()) == NULL)
168
		return -1;
169
	if ((cmh = pdu_alloc(sizeof(*cmh))) == NULL)
170
		goto fail;
171
	bzero(cmh, sizeof(*cmh));
172
	cmh->type = type;
173
	pdu_addbuf(pdu, cmh, sizeof(*cmh), 0);
174
175
	for (i = 0; i < argc; i++)
176
		if (argv[i].len > 0) {
177
			void *ptr;
178
179
			cmh->len[i] = argv[i].len;
180
			if ((ptr = pdu_alloc(argv[i].len)) == NULL)
181
				goto fail;
182
			memcpy(ptr, argv[i].buf, argv[i].len);
183
			pdu_addbuf(pdu, ptr, argv[i].len, i + 1);
184
		}
185
186
	control_queue(ch, pdu);
187
	return 0;
188
fail:
189
	pdu_free(pdu);
190
	return -1;
191
}