Use faccessat for rc_dir and tmp_dir

config.h.dist

@@ -212,6 +212,7 @@ typedef long clen_t;
 #undef HAVE_GETPASSPHRASE
 #define HAVE_CHDIR
 #define HAVE_MKDTEMP
+#define HAVE_FACCESSAT
 
 
 #define SETJMP(env) sigsetjmp(env,1)

config.h.in

@@ -145,6 +145,7 @@ typedef long clen_t;
 #undef HAVE_GETPASSPHRASE
 #undef HAVE_CHDIR
 #undef HAVE_MKDTEMP
+#undef HAVE_FACCESSAT
 #undef HAVE_SETPGRP
 #undef HAVE_SETLOCALE
 #undef HAVE_LANGINFO_CODESET

configure

@@ -9550,7 +9550,7 @@ _ACEOF
 
 
 
-for ac_func in strcasecmp strcasestr strchr memcpy strerror bcopy setpgrp chdir mkdtemp getcwd getwd readlink setenv putenv strtoll stroq atoll atoq symlink readlink lstat srand48 srandom getpassphrase waitpid setlocale
+for ac_func in strcasecmp strcasestr strchr memcpy strerror bcopy setpgrp chdir mkdtemp faccessat getcwd getwd readlink setenv putenv strtoll stroq atoll atoq symlink readlink lstat srand48 srandom getpassphrase waitpid setlocale
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

configure.ac

@@ -151,7 +151,7 @@ dnl AC_FUNC_MEMCMP
 dnl AC_FUNC_MMAP
 dnl AC_FUNC_SETVBUF_REVERSED
 dnl AC_FUNC_VPRINTF
-AC_CHECK_FUNCS(strcasecmp strcasestr strchr memcpy strerror bcopy setpgrp chdir mkdtemp getcwd getwd readlink setenv putenv strtoll stroq atoll atoq symlink readlink lstat srand48 srandom getpassphrase waitpid setlocale)
+AC_CHECK_FUNCS(strcasecmp strcasestr strchr memcpy strerror bcopy setpgrp chdir mkdtemp faccessat getcwd getwd readlink setenv putenv strtoll stroq atoll atoq symlink readlink lstat srand48 srandom getpassphrase waitpid setlocale)
 AC_FUNC_STRFTIME
 AC_FUNC_WAIT3
 AC_FUNC_SETPGRP

rc.c

@@ -1282,6 +1282,11 @@ do_recursive_mkdir(const char *dir)
 	*ch = tmp;
 
     } while (*ch++ != '\0');
+#ifdef HAVE_FACCESSAT
+    if (faccessat(AT_FDCWD, dir, W_OK|X_OK, AT_EACCESS) < 0) {
+	return -1; 
+    }
+#endif
 
     return 0;
 }