glibc/sysdeps/generic/dl-origin.h
Ulrich Drepper 143e2b96c9 Update.
1998-09-02  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dl-load.c (fillin_rpath): Handle "/" as RPATH correctly.
	(_dl_map_object_from_fd): Make NAME argument const.
	Remove last parameter in _dl_new_object call.
	(print_search_path): Correct construction of composed path name.
	(_dl_map_object): Prevent looking at RPATH of the main map twice.
	Remove last parameter in _dl_new_object call.
	* elf/dl-object.c: Remove last parameter.  Determine whether create
	origin entry based on empty realname.  Handle file in root directory
	correctly.
	* elf/ldsodefs.h: Adjust prototype for _dl_new_object.
	* elf/rtld.c (dl_main): Add comment describing reason for memory leak.
	Remove last parameter in _dl_new_object call.
	* sysdeps/generic/dl-origin.h: Handle file in root directory correctly.
	* sysdeps/unix/sysv/linux/dl-origin.h: Likewise.
1998-09-02 12:58:42 +00:00

48 lines
1.6 KiB
C

/* Find path of executable.
Copyright (C) 1998 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Generally it is not possible to implement this. We have to fall
back on a solution where the user provides the information. */
extern const char *_dl_origin_path;
static inline const char *
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 (_dl_origin_path != NULL)
{
size_t len = strlen (_dl_origin_path);
result = malloc (len + 1);
if (result == NULL)
result = (char *) -1;
else
{
char *cp = __mempcpy (result, _dl_origin_path, len);
while (cp > result + 1 && cp[-1] == '/')
--cp;
*cp = '\0';
}
}
return result;
}