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.

1 files changed, 72 insertions, 0 deletions

diff --git a/elf/dl-dst.h b/elf/dl-dst.h
new file mode 100644
index 0000000000..4b014d6ed5
--- /dev/null
+++ b/elf/dl-dst.h
@@ -0,0 +1,72 @@
+/* Handling of dynamic sring tokens.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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.  */
+
+/* Determine the number of DST elements in the name.  Only if IS_PATH is
+   nonzero paths are recognized (i.e., multiple, ':' separated filenames).  */
+#define DL_DST_COUNT(name, is_path) \
+  ({									      \
+    size_t __cnt = 0;							      \
+    const char *__sf = strchr (name, '$');				      \
+									      \
+    if (__sf != NULL)							      \
+      __cnt = _dl_dst_count (__sf, is_path);				      \
+									      \
+    __cnt; })
+
+/* Prototype for used function.  */
+extern size_t _dl_dst_count (const char *name, int is_path);
+
+
+/* Guess from the number of DSTs the length of the restul string.  */
+#define DL_DST_REQUIRED(l, name, len, cnt) \
+  ({									      \
+    size_t origin_len;							      \
+    size_t __len = (len);						      \
+									      \
+    /* Now we make a guess how many extra characters on top of the length     \
+       of S we need to represent the result.  We know that we have CNT	      \
+       replacements.  Each at most can use				      \
+         MAX (strlen (ORIGIN), strlen (_dl_platform))			      \
+       minus 7 (which is the length of "$ORIGIN").			      \
+									      \
+       First get the origin string if it is not available yet.  This can      \
+       only happen for the map of the executable.  */			      \
+    if ((l)->l_origin == NULL)						      \
+      {									      \
+	assert ((l)->l_name[0] == '\0');				      \
+	(l)->l_origin = _dl_get_origin ();				      \
+	origin_len = ((l)->l_origin && (l)->l_origin != (char *) -1	      \
+		      ? strlen ((l)->l_origin) : 0);			      \
+      }									      \
+    else								      \
+      origin_len = (l)->l_origin == (char *) -1 ? 0 : strlen ((l)->l_origin); \
+									      \
+    __len + cnt * (MAX (origin_len, _dl_platformlen) - 7); })
+
+/* Find origin of the executable.  */
+extern const char *_dl_get_origin (void);
+
+
+/* Perform the DST substitution.  */
+#define DL_DST_SUBSTITUTE(l, name, res, is_path) \
+  _dl_dst_substitute (l, name, res, is_path)
+
+/* Prototype for used function.  */
+extern char *_dl_dst_substitute (struct link_map *l, const char *name,
+				 char *result, int is_path);