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 <stdarg.h>
20 #include <string.h>
21 
22 #include "got_compat.h"
23 
24 #if defined(HAVE_PRCTL) && defined(HAVE_PR_SET_NAME)
25 
26 #include <sys/prctl.h>
27 
28 void
29 setproctitle(const char *fmt, ...)
30 {
31 	char	title[16], name[16], *cp;
32 	va_list	ap;
33 	int	used;
34 
35 	va_start(ap, fmt);
36 	vsnprintf(title, sizeof title, fmt, ap);
37 	va_end(ap);
38 
39 	used = snprintf(name, sizeof name, "%s: %s", getprogname(), title);
40 	if (used >= (int)sizeof name) {
41 		cp = strrchr(name, ' ');
42 		if (cp != NULL)
43 			*cp = '\0';
44 	}
45 	prctl(PR_SET_NAME, name);
46 }
47 #else
48 void
49 setproctitle(__unused const char *fmt, ...)
50 {
51 }
52 #endif