From dc5efe83c0252ad45337ab98eff6c26fdb29b0a9 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 5 May 1999 23:29:18 +0000 Subject: Update. * Versions.def (ld.so): Add GLIBC_2.1.1. * elf/Makefile (routines): Add dl-origin. (tests): Add origtest. Add dependencies for the program. * elf/Versions (ld.so) [GLIBC_2.1.1]: Add _dl_origin_path, _dl_platformlen, _dl_dst_count and _dl_dst_substitute. * elf/dl-deps.c (expand_dst): New macro. Expand DSTs in filename. (_dl_map_object_deps): Use expand_dst to expand DSTs in DT_NEEDED, DT_AUXILIARY, and DT_FILTER filenames. * elf/dl-load.c (expand_dynamic_string_token): Explode into two functions and three macros. (_dl_dst_count, _dl_dst_substitute): New functions. * elf/dl-dst.h: New file. * elf/dl-open.c (_dl_open): Take extra parameter with address of caller. Pass address in args structure. (dl_open_worker): Recognize and expand DSTs in filename. * elf/ldsodefs.h (_dl_open): Adapt prototype. * elf/dlopen.c (dlopen_doit): Pass caller address to _dl_open. (__dlopen_check): Pass caller address to dlopen_doit in args. * elf/dlopendoit.c: Likewise. * iconv/gconv_dl.c: Adapt call of _dl_open. * nss/nsswitch.c: Likewise. * elf/origtest.c: New file. * sysdeps/generic/dl-origin.h: Moved to... * sysdeps/generic/dl-origin.c: ...here. * sysdeps/unix/sysv/linux/dl-origin.h: Moved to... * sysdeps/unix/sysv/linux/dl-origin.c: ...here. --- sysdeps/generic/dl-origin.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 sysdeps/generic/dl-origin.c (limited to 'sysdeps/generic/dl-origin.c') diff --git a/sysdeps/generic/dl-origin.c b/sysdeps/generic/dl-origin.c new file mode 100644 index 0000000000..b10fee2d57 --- /dev/null +++ b/sysdeps/generic/dl-origin.c @@ -0,0 +1,54 @@ +/* Find path of executable. + Copyright (C) 1998, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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. */ + +#include +#include +#include +#include + +#include + +/* 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; + +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 (_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; +} -- cgit v1.2.3