compat/getprogname.c

   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