/* Find path of executable. Copyright (C) 1998-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include <string.h> #include <sys/param.h> #include <ldsodefs.h> #include <dl-dst.h> const char * _dl_get_origin (void) { char *result = (char *) -1; /* We use the environment variable LD_ORIGIN_PATH. If it is set make a copy and strip out trailing slashes. */ if (GLRO(dl_origin_path) != NULL) { size_t len = strlen (GLRO(dl_origin_path)); result = (char *) malloc (len + 1); if (result == NULL) result = (char *) -1; else { char *cp = __mempcpy (result, GLRO(dl_origin_path), len); while (cp > result + 1 && cp[-1] == '/') --cp; *cp = '\0'; } } return result; }