1 /* SPDX-License-Identifier: BSD-2-Clause */
3 * logerr: errx with logging
4 * Copyright (c) 2006-2021 Roy Marples <roy@marples.name>
7 * Redistribution and use in source and binary forms, with or without
8 * 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.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/param.h>
35 #if __GNUC__ > 2 || defined(__INTEL_COMPILER)
36 #define __printflike(a, b) __attribute__((format(printf, a, b)))
38 #define __printflike(a, b)
40 #endif /* !__printflike */
42 /* Please do not call log_* functions directly, use macros below */
43 __printflike(1, 2) void log_debug(const char *, ...);
44 __printflike(1, 2) void log_debugx(const char *, ...);
45 __printflike(1, 2) void log_info(const char *, ...);
46 __printflike(1, 2) void log_infox(const char *, ...);
47 __printflike(1, 2) void log_warn(const char *, ...);
48 __printflike(1, 2) void log_warnx(const char *, ...);
49 __printflike(1, 2) void log_err(const char *, ...);
50 __printflike(1, 2) void log_errx(const char *, ...);
51 #define LOGERROR logerr("%s: %d", __FILE__, __LINE__)
53 __printflike(2, 3) void logmessage(int pri, const char *fmt, ...);
54 __printflike(2, 3) void logerrmessage(int pri, const char *fmt, ...);
57 * These are macros to prevent taking address of them so
58 * __FILE__, __LINE__, etc can easily be added.
61 * #define loginfox(fmt, __VA_OPT__(,) __VA_ARGS__)
62 * but that requires gcc-8 or clang-6 and we still have a need to support
63 * old OS's without modern compilers.
65 * Likewise, ##__VA_ARGS__ can't be used as that's a gcc only extension.
67 * The solution is to put fmt into __VA_ARGS__.
68 * It's not pretty but it's 100% portable.
70 #define logdebug(...) log_debug(__VA_ARGS__)
71 #define logdebugx(...) log_debugx(__VA_ARGS__)
72 #define loginfo(...) log_info(__VA_ARGS__)
73 #define loginfox(...) log_infox(__VA_ARGS__)
74 #define logwarn(...) log_warn(__VA_ARGS__)
75 #define logwarnx(...) log_warnx(__VA_ARGS__)
76 #define logerr(...) log_err(__VA_ARGS__)
77 #define logerrx(...) log_errx(__VA_ARGS__)
79 /* For logging in a chroot */
84 unsigned int loggetopts(void);
85 void logsetopts(unsigned int);
86 #define LOGERR_DEBUG (1U << 6)
87 #define LOGERR_QUIET (1U << 7)
88 #define LOGERR_LOG (1U << 11)
89 #define LOGERR_LOG_DATE (1U << 12)
90 #define LOGERR_LOG_HOST (1U << 13)
91 #define LOGERR_LOG_TAG (1U << 14)
92 #define LOGERR_LOG_PID (1U << 15)
93 #define LOGERR_ERR (1U << 21)
94 #define LOGERR_ERR_DATE (1U << 22)
95 #define LOGERR_ERR_HOST (1U << 23)
96 #define LOGERR_ERR_TAG (1U << 24)
97 #define LOGERR_ERR_PID (1U << 25)
99 /* To build tag support or not. */
101 #if defined(LOGERR_TAG)
102 void logsettag(const char *);
105 /* Can be called more than once. */
106 int logopen(const char *);
108 /* Should only be called at program exit. */