Update.

2002-07-11  Ulrich Drepper  <drepper@redhat.com>

	* Versions.def (libc): Add GLIBC_2.3.
	* stdlib/Versions [libc] (GLIBC_2.3): Add realpath.
	* stdlib/canonicalize.c: Add compatibility version for realpath
	and make new code available in GLIBC_2.3.

2 files changed, 23 insertions, 1 deletions

diff --git a/stdlib/Versions b/stdlib/Versions
index c2e17e0096..fc1e5a1004 100644
--- a/stdlib/Versions
+++ b/stdlib/Versions
@@ -90,6 +90,10 @@ libc {
     # used by new G++ ABI
     __cxa_atexit; __cxa_finalize;
   }
+  GLIBC_2.3 {
+    # Silent change in SUS.
+    realpath;
+  }
   GLIBC_PRIVATE {
     # functions which have an additional interface since they are
     # are cancelable.
diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c
index c859288147..3394048fb3 100644
--- a/stdlib/canonicalize.c
+++ b/stdlib/canonicalize.c
@@ -26,6 +26,8 @@
 #include <errno.h>
 #include <stddef.h>
 
+#include <shlib-compat.h>
+
 /* Return the canonical absolute name of file NAME.  A canonical name
    does not contain any `.', `..' components nor any repeated path
    separators ('/') or symlinks.  All path components must exist.  If
@@ -204,7 +206,23 @@ error:
     free (rpath);
   return NULL;
 }
-weak_alias (__realpath, realpath)
+versioned_symbol (libc, __realpath, realpath, GLIBC_2_3);
+
+
+#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3)
+char *
+__old_realpath (const char *name, char *resolved)
+{
+  if (resolved == NULL)
+    {
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  return __realpath (name, resolved);
+}
+compat_symbol (libc, __old_realpath, realpath, GLIBC_2_0);
+#endif
 
 
 char *