diff options
Diffstat (limited to 'm4/acl.m4')
| -rw-r--r-- | m4/acl.m4 | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/m4/acl.m4 b/m4/acl.m4 new file mode 100644 index 0000000..6e6bd08 --- /dev/null +++ b/m4/acl.m4 @@ -0,0 +1,78 @@ +# acl.m4 - check for access control list (ACL) primitives + +# Copyright (C) 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# Written by Paul Eggert and Jim Meyering. + +AC_DEFUN([AC_FUNC_ACL], +[ + AC_LIBOBJ([acl]) + AC_LIBOBJ([file-has-acl]) + + dnl Prerequisites of lib/acl.c. + AC_CHECK_HEADERS(sys/acl.h) + AC_CHECK_FUNCS(acl) + ac_save_LIBS="$LIBS" + AC_SEARCH_LIBS(acl_get_file, acl, + [test "$ac_cv_search_acl_get_file" = "none required" || + LIB_ACL=$ac_cv_search_acl_get_file]) + AC_SUBST(LIB_ACL) + AC_CHECK_HEADERS(acl/libacl.h) + AC_CHECK_FUNCS(acl_get_file acl_get_fd acl_set_file acl_set_fd \ + acl_free acl_from_mode acl_from_text \ + acl_delete_def_file acl_extended_file) + if test $ac_cv_header_sys_acl_h = yes; then + use_acl=1 + if test $ac_cv_func_acl_get_file = yes; then + # If we detect the acl_get_file bug, disable ACL support altogether. + gl_ACL_GET_FILE( , [use_acl=0]) + fi + else + use_acl=0 + fi + if test $use_acl = 1 && + test $ac_cv_func_acl_get_file = yes && + test $ac_cv_func_acl_free = yes; then + AC_REPLACE_FUNCS([acl_entries]) + fi + LIBS="$ac_save_LIBS" + if test $use_acl = 1; then + ac_save_LIBS="$LIBS" + AC_SEARCH_LIBS([acl_trivial], [sec], + [AC_DEFINE([HAVE_ACL_TRIVIAL], 1, + [Define to 1 if you have the `acl_trivial' function.]) + test "$ac_cv_search_acl_trivial" = "none required" || + LIB_ACL_TRIVIAL="$ac_cv_search_acl_trivial"]) + AC_SUBST([LIB_ACL_TRIVIAL]) + LIBS="$ac_save_LIBS" + fi + AC_DEFINE_UNQUOTED(USE_ACL, $use_acl, + [Define if you want access control list support.]) +]) + +# gl_ACL_GET_FILE(IF-WORKS, IF-NOT) +# ------------------------------------- +# If `acl_get_file' works (does not have a particular bug), +# run IF-WORKS, otherwise, IF-NOT. +# This tests for a Darwin 8.7.0 bug, whereby acl_get_file returns NULL, +# but sets errno = ENOENT for an existing file or directory. +AC_DEFUN([gl_ACL_GET_FILE], +[ + AC_CACHE_CHECK([for working acl_get_file], gl_cv_func_working_acl_get_file, + [AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/types.h> + #include <sys/acl.h> + #include <errno.h> + ]], + [[return !! (!acl_get_file (".", ACL_TYPE_ACCESS) + && errno == ENOENT);]])], + [gl_cv_func_working_acl_get_file=yes], + [gl_cv_func_working_acl_get_file=no], + [gl_cv_func_working_acl_get_file=cross-compiling])]) + + AS_IF([test $gl_cv_func_working_acl_get_file = yes], [$1], [$2]) +]) |