1 /*
2  * Copyright (c) 2016 Nicholas Marriott <nicholas.marriott@gmail.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
13  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
14  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 
19 #include <errno.h>
20 
21 #if defined(HAVE_PROGRAM_INVOCATION_SHORT_NAME)
22 const char *
23 getprogname(void)
24 {
25 	return (program_invocation_short_name);
26 }
27 #elif defined(HAVE___PROGNAME)
28 const char *
29 getprogname(void)
30 {
31 	extern char	*__progname;
32 
33 	return (__progname);
34 }
35 #else
36 const char *
37 getprogname(void)
38 {
39 	return ("got");
40 }
41 #endif