X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Fopenat.m4;h=c928ff76f8f8c196f98bdc926b9d42adb1642f53;hb=HEAD;hp=10eac5c12eafa937bbbf6e0581441ec117560adf;hpb=9fb70f2dfbea87fd0a624a5addf03fcbafc9b48a;p=debian%2Ftar

diff --git a/m4/openat.m4 b/m4/openat.m4
index 10eac5c1..c928ff76 100644
--- a/m4/openat.m4
+++ b/m4/openat.m4
@@ -1,7 +1,7 @@
-# serial 17
+# serial 45
 # See if we need to use our replacement for Solaris' openat et al functions.
 
-dnl Copyright (C) 2004-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2015 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,82 +10,27 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_OPENAT],
 [
-  AC_LIBOBJ([openat-proc])
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-  AC_CHECK_FUNCS_ONCE([lchmod])
-  AC_CHECK_FUNCS_ONCE([fdopendir])
-  AC_REPLACE_FUNCS([fchmodat mkdirat openat])
-  AC_REQUIRE([AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
-  case $ac_cv_func_openat+$ac_cv_func_lstat_dereferences_slashed_symlink in
-  yes+yes) ;;
-  yes+*) AC_LIBOBJ([fstatat]);;
+  AC_CHECK_FUNCS_ONCE([openat])
+  AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
+  case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink in
+  yes+*yes)
+    ;;
+  yes+*)
+    # Solaris 9 has *at functions, but uniformly mishandles trailing
+    # slash in all of them.
+    REPLACE_OPENAT=1
+    ;;
   *)
-    AC_DEFINE([__OPENAT_PREFIX], [[rpl_]],
-      [Define to rpl_ if the openat replacement function should be used.])
-    gl_PREREQ_OPENAT;;
+    HAVE_OPENAT=0
+    ;;
   esac
-  gl_FUNC_FCHOWNAT
-])
-
-# gl_FUNC_FCHOWNAT_DEREF_BUG([ACTION-IF-BUGGY[, ACTION-IF-NOT_BUGGY]])
-AC_DEFUN([gl_FUNC_FCHOWNAT_DEREF_BUG],
-[
-  AC_CACHE_CHECK([whether fchownat works with AT_SYMLINK_NOFOLLOW],
-    gl_cv_func_fchownat_nofollow_works,
-    [
-     gl_dangle=conftest.dangle
-     # Remove any remnants of a previous test.
-     rm -f $gl_dangle
-     # Arrange for deletion of the temporary file this test creates.
-     ac_clean_files="$ac_clean_files $gl_dangle"
-     ln -s conftest.no-such $gl_dangle
-     AC_RUN_IFELSE(
-       [AC_LANG_SOURCE(
-	  [[
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <sys/types.h>
-int
-main ()
-{
-  return (fchownat (AT_FDCWD, "$gl_dangle", -1, getgid (),
-		    AT_SYMLINK_NOFOLLOW) != 0
-	  && errno == ENOENT);
-}
-	  ]])],
-    [gl_cv_func_fchownat_nofollow_works=yes],
-    [gl_cv_func_fchownat_nofollow_works=no],
-    [gl_cv_func_fchownat_nofollow_works=no],
-    )
-  ])
-  AS_IF([test $gl_cv_func_fchownat_nofollow_works = no], [$1], [$2])
-])
-
-# If we have the fchownat function, and it has the bug (in glibc-2.4)
-# that it dereferences symlinks even with AT_SYMLINK_NOFOLLOW, then
-# use the replacement function.
-# Also use the replacement function if fchownat is simply not available.
-AC_DEFUN([gl_FUNC_FCHOWNAT],
-[
-  # Assume we'll use the replacement function.
-  # The only case in which we won't is when we have fchownat, and it works.
-  use_replacement_fchownat=yes
-
-  AC_CHECK_FUNC([fchownat], [have_fchownat=yes], [have_fchownat=no])
-  if test $have_fchownat = yes; then
-    gl_FUNC_FCHOWNAT_DEREF_BUG([], [use_replacement_fchownat=no])
-  fi
-
-  if test $use_replacement_fchownat = yes; then
-    AC_LIBOBJ([fchownat])
-    AC_DEFINE([fchownat], [rpl_fchownat],
-      [Define to rpl_fchownat if the replacement function should be used.])
-  fi
 ])
 
+# Prerequisites of lib/openat.c.
 AC_DEFUN([gl_PREREQ_OPENAT],
 [
+  AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
   :
 ])