2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 The FreeBSD Foundation
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include "libiscsiutil.h"
41 static int log_level = 0;
42 static char *peer_name = NULL;
43 static char *peer_addr = NULL;
45 #define MSGBUF_LEN 1024
52 openlog(getprogname(), LOG_NDELAY | LOG_PID, LOG_DAEMON);
56 log_set_peer_name(const char *name)
60 * XXX: Turn it into assertion?
62 if (peer_name != NULL)
63 log_errx(1, "%s called twice", __func__);
64 if (peer_addr == NULL)
65 log_errx(1, "%s called before log_set_peer_addr", __func__);
67 peer_name = checked_strdup(name);
71 log_set_peer_addr(const char *addr)
75 * XXX: Turn it into assertion?
77 if (peer_addr != NULL)
78 log_errx(1, "%s called twice", __func__);
80 peer_addr = checked_strdup(addr);
84 log_common(int priority, int log_errno, const char *fmt, va_list ap)
86 static char msgbuf[MSGBUF_LEN];
87 static char msgbuf_strvised[MSGBUF_LEN * 4 + 1];
91 ret = vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
93 fprintf(stderr, "%s: snprintf failed", getprogname());
94 syslog(LOG_CRIT, "snprintf failed");
98 ret = strnvis(msgbuf_strvised, sizeof(msgbuf_strvised), msgbuf, VIS_NL);
100 fprintf(stderr, "%s: strnvis failed", getprogname());
101 syslog(LOG_CRIT, "strnvis failed");
105 if (log_errno == -1) {
106 if (peer_name != NULL) {
107 fprintf(stderr, "%s: %s (%s): %s\n", getprogname(),
108 peer_addr, peer_name, msgbuf_strvised);
109 syslog(priority, "%s (%s): %s",
110 peer_addr, peer_name, msgbuf_strvised);
111 } else if (peer_addr != NULL) {
112 fprintf(stderr, "%s: %s: %s\n", getprogname(),
113 peer_addr, msgbuf_strvised);
114 syslog(priority, "%s: %s",
115 peer_addr, msgbuf_strvised);
117 fprintf(stderr, "%s: %s\n", getprogname(), msgbuf_strvised);
118 syslog(priority, "%s", msgbuf_strvised);
122 errstr = strerror(log_errno);
124 if (peer_name != NULL) {
125 fprintf(stderr, "%s: %s (%s): %s: %s\n", getprogname(),
126 peer_addr, peer_name, msgbuf_strvised, errstr);
127 syslog(priority, "%s (%s): %s: %s",
128 peer_addr, peer_name, msgbuf_strvised, errstr);
129 } else if (peer_addr != NULL) {
130 fprintf(stderr, "%s: %s: %s: %s\n", getprogname(),
131 peer_addr, msgbuf_strvised, errstr);
132 syslog(priority, "%s: %s: %s",
133 peer_addr, msgbuf_strvised, errstr);
135 fprintf(stderr, "%s: %s: %s\n", getprogname(),
136 msgbuf_strvised, errstr);
137 syslog(priority, "%s: %s",
138 msgbuf_strvised, errstr);
144 log_err(int eval, const char *fmt, ...)
149 log_common(LOG_CRIT, errno, fmt, ap);
156 log_errx(int eval, const char *fmt, ...)
161 log_common(LOG_CRIT, -1, fmt, ap);
168 log_warn(const char *fmt, ...)
173 log_common(LOG_WARNING, errno, fmt, ap);
178 log_warnx(const char *fmt, ...)
183 log_common(LOG_WARNING, -1, fmt, ap);
188 log_debugx(const char *fmt, ...)
196 log_common(LOG_DEBUG, -1, fmt, ap);