1 /*
2 * Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
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 USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <string.h>
18
19 #ifndef HAVE___PROGNAME
20 char *__progname;
21 #endif
22
23 /*
24 * NB. duplicate __progname in case it is an alias for argv[0]
25 * Otherwise it may get clobbered by setproctitle()
26 */
get_progname(char * argv0)27 char *get_progname(char *argv0)
28 {
29 #ifdef HAVE___PROGNAME
30 extern char *__progname;
31
32 return strdup(__progname);
33 #else
34 char *p;
35
36 if (argv0 == NULL)
37 return ("unknown"); /* XXX */
38 p = strrchr(argv0, '/');
39 if (p == NULL)
40 p = argv0;
41 else
42 p++;
43
44 return (strdup(p));
45 #endif
46 }
47