2 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: vsyslog.c,v 1.6 2000/05/22 22:09:25 assar Exp $");
48 * the theory behind this is that we might be trying to call vsyslog
49 * when there's no memory left, and we should try to be as useful as
50 * possible. And the format string should say something about what's
55 simple_vsyslog(int pri, const char *fmt, va_list ap)
57 syslog (pri, "%s", fmt);
61 * do like syslog but with a `va_list'
65 vsyslog(int pri, const char *fmt, va_list ap)
70 int saved_errno = errno;
71 int fmt_len = strlen (fmt);
72 int fmt2_len = fmt_len;
75 fmt2 = malloc (fmt_len + 1);
77 simple_vsyslog (pri, fmt, ap);
81 for (p = fmt, p2 = fmt2; *p != '\0'; ++p) {
82 if (p[0] == '%' && p[1] == 'm') {
83 const char *e = strerror (saved_errno);
84 int e_len = strlen (e);
89 fmt2_len += e_len - 2;
90 tmp = realloc (fmt2, fmt2_len + 1);
93 simple_vsyslog (pri, fmt, ap);
98 memmove (p2, e, e_len);
106 vasprintf (&buf, fmt2, ap);
109 simple_vsyslog (pri, fmt, ap);
112 syslog (pri, "%s", buf);